diff --git a/.changeset/router-bench-audit-and-isolation.md b/.changeset/router-bench-audit-and-isolation.md new file mode 100644 index 0000000..d05254f --- /dev/null +++ b/.changeset/router-bench-audit-and-isolation.md @@ -0,0 +1,83 @@ +--- +"@zipbul/router": patch +--- + +Bench audit, lint/format tooling setup, router lint compliance, circular-dep removal. **No published API change** — `dist/` is unaffected; consumers see no behavioral difference. + +## Part 1 — Bench audit & harness fixes (line-by-line + Codex/Explore second-opinion) + +### Measurement correctness (output was lying) + +- `router.bench.ts`: removed non-existent `enableCache`, `ignoreTrailingSlash`, `caseSensitive` options (silently ignored by `RouterOptions`). The cache-hit vs no-cache and case-insensitive benches were measuring nothing of the kind; sections deleted. `fullOptionsRouter` now uses the real options (`trailingSlash: 'ignore'`, `pathCaseSensitive: false`). Static-match 10/100/500/1000 collapsed to a single hash-bucket bench (all four are O(1) static-bucket lookups; the four-row scaling was misleading). +- `100k-verification.ts`: `100k churn` scenario removed — hit/miss paths were fixed strings, defeating the advertised "unique-path churn" intent. Real churn measurement already lives in `cacheTraversalFeasibility()`. `100k-gate-runner.ts` scenarios list updated. +- `complex-shapes.bench.ts`: `regex` shape now skips memoirist with `regex: null` (was registering a tester-less variant under the "regex (testers)" label — apples-to-oranges vs zipbul). Label corrected from "2 testers" to "3 testers". +- `comparison.bench.ts`: `miss` scenario's `wrongMethod` axis now hits a registered path; the previous unregistered path collapsed wrong-method into the plain miss axis. +- `regression-snapshot.ts`: `p99NsPerOp` JSON field renamed to `maxNsPerOp`. With TRIALS=11 the nearest-rank p99 index lands on the max sample. + +### Statistical honesty + +- `helpers.ts` `percentile()`: docstring warns small-N inputs collapse p75/p99 to max. `100k-gate-runner.ts`, `100k-external-baselines.ts`: `buildP75/P99` collapsed to `buildMax`. `100k-bun-serve-baseline.ts`: `warmedP99` removed. +- `first-call-latency.ts`: replaced local `Math.floor(n*0.99)` with shared `percentile()`. + +### Methodology consistency + +- `100k-external-baselines.ts`: `find-my-way` adapter uses `{ ignoreTrailingSlash: true }` matching `100k-external-correctness.ts`. `settleScavenger()` called before `mem()` baseline. +- `100k-verification.ts`: removed `candidateMicrobench()` and `tryUrlPatternBaseline()` (didn't measure zipbul Router). + +### Cross-router fairness — full pair isolation + +- `comparison.bench.ts`: 7 adapters × 7 scenarios = **49 fresh-process pairs**. Worker takes `argv = [adapter, scenarioLabel]`. Sanity-gate failures print structured reasons. +- `complex-shapes.bench.ts`: 3 routers × 11 shapes = **33 fresh-process pairs** with per-shape build functions (no JIT pollution from sibling shapes). Unsupported pairs print `skip=true reason=unsupported`. + +### Dead-code purge + +- Deleted `bench/comparison-solo.bench.ts`, `bench/baseline/percent-gate.bench.txt`. +- Removed unused `supports` field, `skipFor` parameter in `100k-external-correctness.ts`. +- Removed unused devDependencies `@hattip/router` and `itty-router` (referenced only by since-deleted benches). + +### Walker-fallback bench note + +`walker-fallbacks.bench.ts`: header note that the three benches measure each walker on the workload that triggers its selection — route counts and match paths differ, so the timings are per-walker sanity numbers, not cross-walker comparisons. + +## Part 2 — Lint/format/dead-code tooling (toolkit-wide) + +Copied from `zipbul/` sibling repo for consistency with the broader Zipbul ecosystem standards. All configs at toolkit root (`.oxlintrc.jsonc`, `.oxfmtrc.jsonc`, `knip.json`). Root `package.json` scripts: `typecheck`, `lint`, `format`, `format:check`, `knip`, `dpdm`. devDependencies pinned to versions matching the sibling repo (`oxlint@^1.41.0`, `oxlint-tsgolint@^0.11.1`, `oxfmt@^0.26.0`, `knip@^5.63.1`, `dpdm@^4.2.0`). + +### tsconfig stricter (`toolkit/tsconfig.json`) + +`noUnusedLocals`, `noUnusedParameters`, `noPropertyAccessFromIndexSignature` all enabled (was `false`). Router passes cleanly. + +### Sensible overrides (`.oxlintrc.jsonc`) + +- `packages/router/bench/**/*.ts`: `no-explicit-any`, `no-loop-func`, `import/no-dynamic-require`, `default-case` off. Adapter testing against 7 external routers with disparate return shapes requires loose typing; per-shape `Shape` union switches use exhaustive type-narrowing that TypeScript verifies. +- `**/*.spec.ts`/`**/*.test.ts`: `no-explicit-any` off (intentional `any` for type-error coverage); `jest/no-conditional-in-test` off (Result-type narrowing `if (err.data.kind === 'X')` is legitimate TypeScript narrowing, not a test antipattern). + +### Router exports-last refactor (12 files) + +All `export function`/`export interface`/`export class` declarations moved to a single bottom `export { ... }` / `export type { ... }` block per file. Files touched: `pattern-tester.ts`, `path-policy.ts`, `wildcard-method-expand.ts`, `emitter.ts`, `prefix-factor.ts`, `factor-detect.ts`, `path-parser.ts`, `route-expand.ts`, `wildcard-prefix-index.ts`, `router.ts`, `pipeline/registration.ts`, `codegen/segment-compile.ts`, `tree/segment-tree.ts`. + +### Circular dependency removal + +Extracted `SegmentNode` + `ParamSegment` interfaces from `src/tree/segment-tree.ts` into a new `src/tree/node-types.ts`. `segment-tree.ts` now imports the types from `./node-types` and re-exports them; `undo.ts` also imports from `./node-types`. Eliminates the type-only `segment-tree → undo → segment-tree` cycle that `dpdm` flagged. + +### Test/spec import dedup + +- `src/builder/path-parser.spec.ts`, `src/builder/route-expand.spec.ts`, `src/router.spec.ts`: merged duplicate inline imports (one at top, one mid-file) into single top imports — fixes `import/no-duplicates` and `import/first`. + +### Format pass + +`oxfmt` applied to every `.ts`, `.md`, `.json` in the monorepo. 204 files reformatted (printWidth 130, trailingComma all, sorted package.json scripts, sorted imports per group). + +## Verification + +- `bunx tsc --noEmit -p packages/router/tsconfig.json` — 0 errors. +- `bun test` (router-scoped) — 999 pass / 0 fail / 9533 expects. +- `bunx oxlint packages/router` — 0 warnings / 0 errors. +- `bunx dpdm packages/router/src/**/*.ts packages/router/index.ts` — no circular dependencies. +- Bench worker smoke runs confirmed for `comparison.bench.ts`, `complex-shapes.bench.ts`, `cache-cardinality.bench.ts`, `walker-fallbacks.bench.ts`, `first-call-latency.ts`, `regression-snapshot.ts`, `router.bench.ts`, `100k-verification.ts`, `100k-external-correctness.ts`. `100k-gate-runner.ts` regex parser still matches `100k-verification.ts` output format. + +## Known follow-ups (out of router scope) + +- `cors`, `multipart`, `rate-limiter`, `result`, `query-parser` still have lint violations (53 errors total across those packages). Pre-existing; not addressed in this PR. Tracking separately. +- `knip` reports ~11 router exports + 9 router types as unused outside their own file. Most are internal helpers (`flushStaticBuffer`, `emitParamBranch`, etc.) — safe to delete or keep as internal-API surface. Decided not to remove now to avoid scope creep. +- Pre-existing stale `dist/` artifacts in `packages/result` and `packages/shared` cause 26 cross-package test failures when running `bun test` from monorepo root. Unrelated; tracked separately. diff --git a/.changeset/router-build-fix-and-match-correctness.md b/.changeset/router-build-fix-and-match-correctness.md new file mode 100644 index 0000000..7c25692 --- /dev/null +++ b/.changeset/router-build-fix-and-match-correctness.md @@ -0,0 +1,24 @@ +--- +"@zipbul/router": minor +--- + +Fix a broken published build and several match-time correctness defects. + +## Build + +- **Fixed a broken build configuration.** The `bun build --packages external` + `sideEffects: false` combination triggered a Bun bundler bug (oven-sh/bun#18008) that emitted an 84-byte stub re-exporting undeclared identifiers — the produced `dist` could not be imported. The build now uses `bunup` (Bun-native library bundler), emitting a working ESM bundle, a `.d.ts`, and a linked source map. `sideEffects: false` was removed (it provides no benefit for a server-side library and was the bug trigger). + +## Match-time correctness + +- **`:param` immediately followed by a `*name` star wildcard now matches an empty tail.** `/:p/*rest` against `/x` now returns `{ p: 'x', rest: '' }` (previously `null`). The compiled match function diverged from the reference walkers on this shape. +- **Case-insensitive matching (`pathCaseSensitive: false`) no longer mutates captured values.** Case-folding now applies to route selection only; captured `:param` and `*wildcard` values keep their original case (e.g. `/Users/:id` + `/USERS/AbC` → `{ id: 'AbC' }`, previously `'abc'`). Folding is now ASCII-only (length-preserving) instead of `String.toLowerCase()`: a captured value containing a length-changing non-ASCII char (e.g. `İ`, whose `toLowerCase()` is two code units) no longer corrupts the capture offsets (`/:id/x` + `/İ/x` → `{ id: 'İ' }`, previously `{ id: 'İ/' }`). Since URL paths are ASCII (RFC 3986; non-ASCII arrives percent-encoded), ASCII folding is complete. +- **Case-insensitive hit cache no longer serves stale captures.** The dynamic-match cache was keyed on the case-folded path, so two case-variant inputs (`/u/AbC`, `/u/aBc`) collapsed to one entry and the second returned the first's captured value. The cache is now keyed on the non-folded (but still trailing-slash-trimmed) path, so each case-variant keeps its own capture while same-path and trailing-slash-variant inputs still cache-hit. +- **Regex param fast-path no longer over-matches.** `:id(\w+)` (and `\w{1,}`) now correctly rejects hyphens, matching the actual `\w` semantics. +- **Optional + regex params are now supported.** `:id(\d+)?` builds and matches (`/x/42` → `{ id: '42' }`, `/x` absent, `/x/abc` no match); previously rejected with a misleading `path-query` error. +- **Non-ASCII HTTP method tokens are now rejected** with `method-invalid-token` (RFC 7230/9110 token grammar is ASCII-only); previously accepted. +- **A raw `?` in a non-param segment is now rejected** (`/a?` → `path-query`); the `?` optional decorator is accepted only on param segments. + +## Internal + +- Removed dead code: the unused `OptionalParamDefaults` class, `MethodRegistry.get()`/`size`, and the unreachable nullable-value path in the hit cache. +- Per-route build rollback now restores `maxParamsObserved`. diff --git a/.changeset/router-options-enum-to-boolean.md b/.changeset/router-options-enum-to-boolean.md new file mode 100644 index 0000000..e290615 --- /dev/null +++ b/.changeset/router-options-enum-to-boolean.md @@ -0,0 +1,47 @@ +--- +"@zipbul/router": major +--- + +BREAKING: collapse two 2-state public enums into booleans on `RouterOptions`. + +The `TrailingSlash` and `OptionalParamBehavior` enums each had only two +members. They were boolean choices dressed up as enums — the internal +pipeline already converted both to booleans before consuming them +(`router.ts:95`, `build.ts:106`). Replacing the enums with booleans +removes ceremony from every call site without changing runtime behavior. + +### Migration + +```ts +// Before +import { Router, TrailingSlash, OptionalParamBehavior } from '@zipbul/router'; +new Router({ + trailingSlash: TrailingSlash.Strict, + optionalParamBehavior: OptionalParamBehavior.SetUndefined, +}); + +// After +import { Router } from '@zipbul/router'; +new Router({ + ignoreTrailingSlash: false, + omitMissingOptional: false, +}); +``` + +| Old | New | +| :----------------------------------------------------------- | :----------------------------- | +| `{ trailingSlash: TrailingSlash.Strict }` | `{ ignoreTrailingSlash: false }` | +| `{ trailingSlash: TrailingSlash.Ignore }` (default) | `{ ignoreTrailingSlash: true }` (or omit) | +| `{ optionalParamBehavior: OptionalParamBehavior.Omit }` (default) | `{ omitMissingOptional: true }` (or omit) | +| `{ optionalParamBehavior: OptionalParamBehavior.SetUndefined }` | `{ omitMissingOptional: false }` | + +Defaults are unchanged: trailing slash is ignored by default; missing +optional parameters are omitted from `params` by default. + +### Public export surface + +The two enum names are removed from the public exports. Remaining +exports: `Router`, `RouterError`, `MatchSource`, `RouterErrorKind`. +`MatchSource` (3 members) and `RouterErrorKind` (21 members) remain +enums — both have enough cardinality that the enum form carries +meaningful information. diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 6cfb3dc..7603fe9 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -15,7 +15,7 @@ jobs: - uses: oven-sh/setup-bun@v2 with: - bun-version: "1.3.9" + bun-version: '1.3.9' - run: bun install --frozen-lockfile diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml index 9d37fa0..6e864ec 100644 --- a/.github/workflows/release.yml +++ b/.github/workflows/release.yml @@ -22,12 +22,12 @@ jobs: - uses: oven-sh/setup-bun@v2 with: - bun-version: "1.3.9" + bun-version: '1.3.9' - uses: actions/setup-node@v4 with: - node-version: "24" - registry-url: "https://registry.npmjs.org" + node-version: '24' + registry-url: 'https://registry.npmjs.org' - run: bun install --frozen-lockfile @@ -65,7 +65,7 @@ jobs: with: publish: bun run scripts/publish.ts version: bunx changeset version - title: "chore: version packages" - commit: "chore: version packages" + title: 'chore: version packages' + commit: 'chore: version packages' env: GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} diff --git a/.gitignore b/.gitignore index e5825ec..1d6d673 100644 --- a/.gitignore +++ b/.gitignore @@ -7,3 +7,5 @@ dist # code coverage coverage *.lcov + +.claude/scheduled_tasks.lock diff --git a/.oxfmtrc.jsonc b/.oxfmtrc.jsonc new file mode 100644 index 0000000..f3b7506 --- /dev/null +++ b/.oxfmtrc.jsonc @@ -0,0 +1,43 @@ +{ + "$schema": "./node_modules/oxfmt/configuration_schema.json", + + // Prettier-compatible core options + "printWidth": 130, + "tabWidth": 2, + "useTabs": false, + "semi": true, + "singleQuote": true, + "jsxSingleQuote": false, + "quoteProps": "as-needed", + "trailingComma": "all", + "bracketSpacing": true, + "bracketSameLine": false, + "arrowParens": "avoid", + "proseWrap": "preserve", + "embeddedLanguageFormatting": "auto", + "endOfLine": "lf", + "insertFinalNewline": true, + "ignorePatterns": [], + "experimentalSortPackageJson": { + "sortScripts": true, + }, + "experimentalSortImports": { + "customGroups": [], + "groups": [ + "type-import", + ["value-builtin", "value-external"], + "type-internal", + "value-internal", + ["type-parent", "type-sibling", "type-index"], + ["value-parent", "value-sibling", "value-index"], + "unknown", + ], + "ignoreCase": true, + "internalPattern": ["~/", "@/"], + "newlinesBetween": true, + "order": "asc", + "partitionByComment": false, + "partitionByNewline": false, + "sortSideEffects": false, + }, +} diff --git a/.oxlintrc.jsonc b/.oxlintrc.jsonc new file mode 100644 index 0000000..bc0b1bb --- /dev/null +++ b/.oxlintrc.jsonc @@ -0,0 +1,273 @@ +{ + "$schema": "./node_modules/oxlint/configuration_schema.json", + "plugins": ["unicorn", "typescript", "oxc", "import", "promise", "node", "jsdoc", "jest"], + "rules": { + "unicorn/no-new-array": "off", + "unicorn/no-null": "off", + "unicorn/no-useless-undefined": "off", + "constructor-super": "error", + "for-direction": "error", + "no-async-promise-executor": "error", + "no-caller": "error", + "no-class-assign": "error", + "no-compare-neg-zero": "error", + "no-cond-assign": "error", + "no-const-assign": "error", + "no-constant-binary-expression": "error", + "no-constant-condition": "error", + "no-control-regex": "error", + "no-debugger": "error", + "no-delete-var": "error", + "no-dupe-class-members": "error", + "no-dupe-else-if": "error", + "no-dupe-keys": "error", + "no-duplicate-case": "error", + "no-empty-pattern": "error", + "no-ex-assign": "error", + "no-extra-boolean-cast": "error", + "no-func-assign": "error", + "no-global-assign": "error", + "no-import-assign": "error", + "no-invalid-regexp": "error", + "no-irregular-whitespace": "error", + "no-loss-of-precision": "error", + "no-new-native-nonconstructor": "error", + "no-obj-calls": "error", + "no-self-assign": "error", + "no-setter-return": "error", + "no-sparse-arrays": "error", + "no-this-before-super": "error", + "no-unsafe-finally": "error", + "no-unsafe-negation": "error", + "no-unsafe-optional-chaining": "error", + "no-useless-backreference": "error", + "no-useless-catch": "error", + "no-useless-escape": "error", + "no-useless-rename": "error", + "no-with": "error", + "no-empty": [ + "error", + { + "allowEmptyCatch": true, + }, + ], + "curly": "error", + "no-else-return": "error", + "no-unneeded-ternary": "error", + "default-case": "error", + "default-case-last": "error", + "default-param-last": "error", + "no-self-compare": "error", + "no-loop-func": "error", + "typescript/no-empty-object-type": [ + "error", + { + "allowInterfaces": "always", + }, + ], + "typescript/await-thenable": "error", + "typescript/no-array-delete": "error", + "typescript/no-base-to-string": "error", + "typescript/no-confusing-void-expression": "error", + "typescript/no-deprecated": "error", + "typescript/no-duplicate-type-constituents": "error", + "typescript/no-floating-promises": "error", + "typescript/no-for-in-array": "error", + "typescript/no-meaningless-void-operator": "error", + "typescript/no-misused-promises": "error", + "typescript/no-misused-spread": "error", + "typescript/no-mixed-enums": "error", + "typescript/no-redundant-type-constituents": "error", + "typescript/no-unnecessary-boolean-literal-compare": "error", + "typescript/no-unnecessary-template-expression": "error", + "typescript/no-unnecessary-type-arguments": "error", + "typescript/no-unnecessary-type-assertion": "error", + "typescript/no-implied-eval": "error", + "typescript/no-explicit-any": "error", + "typescript/switch-exhaustiveness-check": "error", + "typescript/strict-boolean-expressions": "error", + "typescript/no-unsafe-argument": "error", + "typescript/no-unsafe-assignment": "error", + "typescript/no-unsafe-call": "error", + "typescript/no-unsafe-enum-comparison": "error", + "typescript/no-unsafe-member-access": "error", + "typescript/no-unsafe-return": "error", + "typescript/no-unsafe-type-assertion": "error", + "typescript/no-unsafe-unary-minus": "error", + "typescript/non-nullable-type-assertion-style": "error", + "typescript/only-throw-error": "error", + "typescript/prefer-includes": "error", + "typescript/prefer-nullish-coalescing": "error", + "typescript/prefer-optional-chain": "error", + "typescript/prefer-promise-reject-errors": "error", + "typescript/prefer-reduce-type-parameter": "error", + "typescript/prefer-return-this-type": "error", + "typescript/promise-function-async": "error", + "typescript/related-getter-setter-pairs": "error", + "typescript/require-array-sort-compare": "error", + "typescript/require-await": "error", + "typescript/restrict-plus-operands": "error", + "typescript/restrict-template-expressions": "error", + "typescript/return-await": "error", + "typescript/unbound-method": "error", + "typescript/use-unknown-in-catch-callback-variable": "off", + "no-unused-vars": [ + "error", + { + "args": "all", + "argsIgnorePattern": "^_", + "caughtErrors": "all", + "caughtErrorsIgnorePattern": "^_", + "destructuredArrayIgnorePattern": "^_", + "varsIgnorePattern": "^_", + "ignoreRestSiblings": true, + }, + ], + "promise/catch-or-return": "error", + "promise/always-return": "error", + "promise/no-return-in-finally": "error", + "promise/no-nesting": "error", + "promise/no-multiple-resolved": "error", + "promise/prefer-catch": "error", + "promise/prefer-await-to-then": "error", + "promise/valid-params": "error", + "promise/no-callback-in-promise": "error", + "import/no-cycle": "error", + "import/no-commonjs": "error", + "import/no-amd": "error", + "import/no-dynamic-require": "error", + "import/no-default-export": "error", + "import/first": "error", + "import/exports-last": "error", + "import/no-duplicates": "error", + "import/no-self-import": "error", + "import/no-unassigned-import": "error", + "oxc/missing-throw": "error", + "oxc/number-arg-out-of-range": "error", + "oxc/uninvoked-array-callback": "error", + "oxc/no-accumulating-spread": "error", + "oxc/no-map-spread": "error", + "unicorn/no-unnecessary-await": "error", + "unicorn/no-useless-spread": "error", + "unicorn/prefer-array-find": "error", + "unicorn/prefer-set-has": "error", + "unicorn/prefer-set-size": "error", + "no-eval": "error", + "no-restricted-globals": ["error", "Reflect", "Proxy"], + "no-restricted-imports": [ + "error", + { + "paths": [ + { + "name": "node:module", + "importNames": ["createRequire"], + "message": "Do not import createRequire; avoid require()-based loading.", + }, + { + "name": "module", + "importNames": ["createRequire"], + "message": "Do not import createRequire; avoid require()-based loading.", + }, + ], + }, + ], + }, + "overrides": [ + { + // Bench harness interfaces with 7 external routers whose APIs use + // disparate return shapes; the orchestrator/worker split loops over + // adapter records by design. Allowing these patterns here keeps + // bench code minimal without leaking looseness into src/. + "files": ["packages/router/bench/**/*.ts"], + "rules": { + "typescript/no-explicit-any": "off", + "eslint/no-loop-func": "off", + "import/no-dynamic-require": "off", + // Exhaustive Shape/RouterKind unions in per-shape build functions; + // TypeScript proves exhaustiveness at compile time, default-case + // would be unreachable dead code. + "default-case": "off", + }, + }, + { + "files": ["**/*.spec.ts", "**/*.test.ts", "**/*.e2e.test.ts"], + "rules": { + "jest/consistent-test-it": "error", + "jest/expect-expect": "error", + "jest/max-expects": "error", + "jest/max-nested-describe": "error", + "jest/no-commented-out-tests": "error", + "jest/no-conditional-expect": "error", + // Result-type narrowing patterns (`if (err.data.kind === 'X') { expect(...) }`) + // are legitimate TypeScript narrowing, not test antipatterns. The expect() + // on the discriminant precedes the if; the if exists for the type system. + "jest/no-conditional-in-test": "off", + "jest/no-confusing-set-timeout": "error", + "jest/no-disabled-tests": "error", + "jest/no-focused-tests": "error", + "jest/no-done-callback": "error", + "jest/no-duplicate-hooks": "error", + "jest/no-identical-title": "error", + "jest/no-export": "error", + "jest/no-standalone-expect": "error", + "jest/no-test-prefixes": "error", + "jest/no-test-return-statement": "error", + "jest/padding-around-test-blocks": "error", + "jest/require-top-level-describe": "error", + "jest/valid-describe-callback": "error", + "jest/valid-expect": "error", + "jest/valid-title": "error", + // Test files frequently use `any` for deliberate type-error coverage. + "typescript/no-explicit-any": "off", + }, + }, + ], + "settings": { + "jsx-a11y": { + "polymorphicPropName": null, + "components": {}, + "attributes": {}, + }, + "import/resolver": { + "typescript": { + "bun": true, + }, + }, + "next": { + "rootDir": [], + }, + "react": { + "formComponents": [], + "linkComponents": [], + "version": null, + }, + "jsdoc": { + "ignorePrivate": false, + "ignoreInternal": false, + "ignoreReplacesDocs": true, + "overrideReplacesDocs": true, + "augmentsExtendsReplacesDocs": false, + "implementsReplacesDocs": false, + "exemptDestructuredRootsFromChecks": false, + "tagNamePreference": {}, + }, + "vitest": { + "typecheck": false, + }, + }, + "env": { + "builtin": true, + }, + "globals": {}, + "ignorePatterns": [ + "node_modules", + "**/node_modules/**", + "**/*.d.ts", + ".zipbul", + "**/.zipbul/**", + "dist", + "**/dist/**", + ".dependency-cruiser.cjs", + "commitlint.config.cjs", + ], +} diff --git a/.vscode/mcp.json b/.vscode/mcp.json index 6a67605..e828674 100644 --- a/.vscode/mcp.json +++ b/.vscode/mcp.json @@ -2,10 +2,7 @@ "servers": { "sequential-thinking": { "command": "bunx", - "args": [ - "-y", - "@modelcontextprotocol/server-sequential-thinking" - ] + "args": ["-y", "@modelcontextprotocol/server-sequential-thinking"] } } } diff --git a/README.md b/README.md index 0b22198..4638316 100644 --- a/README.md +++ b/README.md @@ -9,17 +9,17 @@ Each package solves one problem, returns a plain value, and stays out of your wa ## 📦 Packages -| Package | Description | Version | Coverage | -|:--------|:------------|:--------|:---------| -| [@zipbul/shared](packages/shared) | Type-safe HTTP enums and constants | [![npm](https://img.shields.io/npm/v/@zipbul/shared?label=)](https://www.npmjs.com/package/@zipbul/shared) | — | -| [@zipbul/result](packages/result) | Error handling without exceptions | [![npm](https://img.shields.io/npm/v/@zipbul/result?label=)](https://www.npmjs.com/package/@zipbul/result) | ![coverage](https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/parkrevil/3965fb9d1fe2d6fc5c321cb38d88c823/raw/result-coverage.json) | -| [@zipbul/cors](packages/cors) | Framework-agnostic CORS handling | [![npm](https://img.shields.io/npm/v/@zipbul/cors?label=)](https://www.npmjs.com/package/@zipbul/cors) | ![coverage](https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/parkrevil/3965fb9d1fe2d6fc5c321cb38d88c823/raw/cors-coverage.json) | +| Package | Description | Version | Coverage | +| :-------------------------------------------- | :------------------------------------- | :--------------------------------------------------------------------------------------------------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------ | +| [@zipbul/shared](packages/shared) | Type-safe HTTP enums and constants | [![npm](https://img.shields.io/npm/v/@zipbul/shared?label=)](https://www.npmjs.com/package/@zipbul/shared) | — | +| [@zipbul/result](packages/result) | Error handling without exceptions | [![npm](https://img.shields.io/npm/v/@zipbul/result?label=)](https://www.npmjs.com/package/@zipbul/result) | ![coverage](https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/parkrevil/3965fb9d1fe2d6fc5c321cb38d88c823/raw/result-coverage.json) | +| [@zipbul/cors](packages/cors) | Framework-agnostic CORS handling | [![npm](https://img.shields.io/npm/v/@zipbul/cors?label=)](https://www.npmjs.com/package/@zipbul/cors) | ![coverage](https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/parkrevil/3965fb9d1fe2d6fc5c321cb38d88c823/raw/cors-coverage.json) | | [@zipbul/query-parser](packages/query-parser) | RFC 3986 compliant query string parser | [![npm](https://img.shields.io/npm/v/@zipbul/query-parser?label=)](https://www.npmjs.com/package/@zipbul/query-parser) | ![coverage](https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/parkrevil/3965fb9d1fe2d6fc5c321cb38d88c823/raw/query-parser-coverage.json) | -| [@zipbul/rate-limiter](packages/rate-limiter) | Rate limiter with multiple algorithms | [![npm](https://img.shields.io/npm/v/@zipbul/rate-limiter?label=)](https://www.npmjs.com/package/@zipbul/rate-limiter) | ![coverage](https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/parkrevil/3965fb9d1fe2d6fc5c321cb38d88c823/raw/rate-limiter-coverage.json) | -| [@zipbul/router](packages/router) | High-performance radix-tree URL router | [![npm](https://img.shields.io/npm/v/@zipbul/router?label=)](https://www.npmjs.com/package/@zipbul/router) | ![coverage](https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/parkrevil/3965fb9d1fe2d6fc5c321cb38d88c823/raw/router-coverage.json) | +| [@zipbul/rate-limiter](packages/rate-limiter) | Rate limiter with multiple algorithms | [![npm](https://img.shields.io/npm/v/@zipbul/rate-limiter?label=)](https://www.npmjs.com/package/@zipbul/rate-limiter) | ![coverage](https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/parkrevil/3965fb9d1fe2d6fc5c321cb38d88c823/raw/rate-limiter-coverage.json) | +| [@zipbul/router](packages/router) | High-performance radix-tree URL router | [![npm](https://img.shields.io/npm/v/@zipbul/router?label=)](https://www.npmjs.com/package/@zipbul/router) | ![coverage](https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/parkrevil/3965fb9d1fe2d6fc5c321cb38d88c823/raw/router-coverage.json) |
-## License +## License [MIT](LICENSE) diff --git a/bun.lock b/bun.lock index 216ce48..d7997e0 100644 --- a/bun.lock +++ b/bun.lock @@ -3,11 +3,16 @@ "configVersion": 1, "workspaces": { "": { - "name": "bunner-pantry", + "name": "@zipbul/toolkit", "devDependencies": { "@changesets/cli": "^2.29.8", "@types/bun": "latest", + "dpdm": "^4.2.0", "fast-check": "^4.5.3", + "knip": "^6.14.1", + "oxfmt": "^0.50.0", + "oxlint": "^1.65.0", + "oxlint-tsgolint": "^0.22.1", }, "peerDependencies": { "typescript": "^5", @@ -95,17 +100,25 @@ "version": "0.2.3", "dependencies": { "@zipbul/result": "workspace:*", - "@zipbul/shared": "workspace:*", }, "devDependencies": { + "@stryker-mutator/core": "^9.6.1", "@types/bun": "latest", + "@zipbul/shared": "workspace:*", + "bunup": "^0.16.31", + "dpdm": "^4.2.0", "fast-check": "^3.0.0", "find-my-way": "^9.5.0", "hono": "^4.12.3", + "knip": "^6.14.1", "koa-tree-router": "^0.13.1", "memoirist": "^0.4.0", "mitata": "^1.0.34", + "oxfmt": "^0.51.0", + "oxlint": 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"$schema": "https://unpkg.com/knip@latest/schema.json", + "workspaces": { + "packages/*": { + "entry": [ + "index.ts", + "internal.ts", + "src/**/*.{spec,test}.ts", + "test/**/*.{spec,test}.ts", + "bench/**/*.{ts,bench.ts}" + ], + "project": ["**/*.ts"] + } + }, + "ignore": [ + "**/node_modules/**", + "**/dist/**", + "**/build/**", + "**/target/**" + ], + "ignoreDependencies": ["@commitlint/cli", "mitata"] +} diff --git a/knoldr/ULTIMATE.md b/knoldr/ULTIMATE.md new file mode 100644 index 0000000..6a02827 --- /dev/null +++ b/knoldr/ULTIMATE.md @@ -0,0 +1,2730 @@ +# ULTIMATE.md: Bun/JSC Router Optimization Blueprint + +이 문서는 Bun 전용 라우터를 극한까지 최적화하기 위한 계획 문서다. +기준은 추측이 아니라 `packages/router/bench/bun-technique-matrix.ts`, 기존 router end-to-end bench, 현재 코드 전수 검토, Bun 1.3.13 기준 로컬 실행 결과, Bun 1.3.x 공식 릴리스 노트, RFC 9110/RFC 3986/RFC 3629 기준을 교차 확인한 결과다. + +목표는 단순히 "TypedArray를 많이 쓰는 라우터"가 아니다. Bun은 JavaScriptCore(JSC) 기반이므로, 현재 근거상 가장 강한 가설은 JSC가 잘 최적화하는 object shape/property lookup을 활용하고, allocation/GC가 생기는 지점만 제거하는 hybrid 설계다. + +최상위 규모 목표는 **100,000 registered routes in a single router**이다. 이 문서의 모든 correctness, memory, build, match, cache, codegen, validation 전략은 100k routes에서 무너지지 않는 것을 기준으로 판단한다. + +단, 이 문서는 “모든 후보를 이미 끝까지 구현했다”는 선언이 아니다. 현재 확정된 기법, 기각된 기법, end-to-end 검증이 더 필요한 후보를 분리한다. 최종 최고 설계로 확정하려면 이 문서의 Verification Gate를 통과해야 한다. + +## 0. Document Finality Contract + +이 문서의 완성 기준은 “현재 구현이 이미 완벽하다”가 아니다. 완성 기준은 다음이다. + +- 구현자가 이 문서만 보고 어떤 결함을 먼저 고칠지 결정할 수 있어야 한다. +- 어떤 최적화가 확정, 조건부, 기각인지 오해 없이 구분되어야 한다. +- 성능/메모리 수치가 재현 범위를 넘어서 과장되지 않아야 한다. +- 100k routes에서 최종 승인하려면 어떤 테스트, 벤치, profile을 통과해야 하는지 닫혀 있어야 한다. +- 미검증 항목은 “모름”으로 남기지 않고, 검증 명령/측정 단위/승인 기준으로 변환되어야 한다. +- 보안/표준 정책은 secure/default와 compat/unsafe의 경계가 명확해야 한다. + +구현 언어/런타임 스코프 (Implementation language/runtime scope): + +- Implementation language: **TypeScript only**, executing on Bun JSC. +- No native bindings (no N-API/FFI). +- No WebAssembly hot path or build artifact. +- No transpilation to other JS runtimes (Node/Deno) is targeted; cross-runtime compatibility is explicitly out-of-scope. +- All performance and memory primitives are JS/TS built-ins or Bun stdlib (`Object.create(null)`, `Map`, `Int32Array`, `URLPattern`, `Bun.hash`, `Bun.serve`, `Bun.nanoseconds`, etc.). +- External diagnostic tooling (`bun --cpu-prof`, `bun --heap-prof`, Linux `perf`, `valgrind`) may be used for measurement-only purposes; the router source code never depends on them at runtime. + +문서 내 용어의 의미: + +- `Confirmed`: 현재 코드/벤치/표준으로 사실 확인된 내용. +- `Provisional`: 방향성은 강하지만 end-to-end gate 전까지 최종 채택하지 않는 내용. +- `Candidate`: 실험 대상. 기본 설계가 아니다. +- `Rejected`: 현재 재현 근거상 채택하지 않는 내용. +- `Gate`: 구현 완료 또는 enterprise/extreme claim 전에 반드시 통과해야 하는 검증. +- `build()` / `seal()`: `build()` is the public API boundary; `seal()` is the internal snapshot-validation operation. When this document says `seal()`, it means the internal work performed during public `build()`. + +최종 claim 금지 조건: + +- single-run microbench만으로 “최고”, “완벽”, “엔터프라이즈급”이라고 쓰지 않는다. +- cache-hot 반복 조회만으로 router match path 전체 성능이라고 말하지 않는다. +- static-only external baseline을 dynamic/param/wildcard 성능으로 일반화하지 않는다. +- native JS RegExp guard를 ReDoS 완전 방지로 표현하지 않는다. +- heap/RSS delta 한 번으로 retained memory 최종값이라고 말하지 않는다. +- 구현되지 않은 strict/security policy를 현재 품질로 주장하지 않는다. + +--- + +## 1. 재현 근거 + +실행 명령: + +```sh +bun packages/router/bench/bun-technique-matrix.ts +``` + +주요 결과: + +| 항목 | 결과 | +| ---------------------------------------------------------- | ----------------------------------------: | +| method null-proto object lookup | 1.12 ns/op | +| method switch dispatch | 2.10 ns/op | +| method Map.get | 7.80 ns/op | +| method bitmask availability | 2.18 ns/op | +| bitmap+popcount rank | 4.95 ns/op | +| method bool array availability | 2.69 ns/op | +| method Set availability | 3.43 ns/op | +| method Set availability | 9.66 ns/op | +| terminal direct handler index | 2.07 ns/op | +| terminal array method lookup | 2.41 ns/op | +| terminal tagged fast path | 2.39 ns/op | +| terminal tagged poly path | 2.18 ns/op | +| direct object static hit (small key set, JSC IC fast path) | 3.44 ns/op | +| direct object static hit (100k key set, post-IC) | **27.71 ns/iter** (§5.3 B) | +| `Map` static hit (100k key set) | **13.87 ns/iter** (§5.3 B — 1.99× faster) | +| length bucket static hit | 5.49 ns/op | +| packed key lookup hit | 25.50 ns/op | +| open-address hash lookup hit | 18.59 ns/op | +| fanout4 object lookup | 4.02 ns/op | +| fanout16 object lookup | 3.08 ns/op | +| fanout64 object lookup | 3.27 ns/op | +| fanout64 array scan | 54.82 ns/op | +| Uint32Array indexed read | 3.02 ns/op | +| DataView getUint32 | 3.59 ns/op | +| TextEncoder.encode per match | 47.04 ns/op | +| Bun.hash string | 71.58 ns/op | +| String#indexOf slash | 4.46 ns/op | +| manual slash scan | 1.36 ns/op | +| string length read | 2.35 ns/op | +| toLowerCase unchanged ascii | 2.70 ns/op | +| manual lowercase unchanged ascii | 17.54 ns/op | +| build-time specialized equality | 1.57 ns/op | +| cache key concat lookup | 11.37 ns/op | +| per-method cache path lookup | 4.19 ns/op | +| throw/catch validation | 55.94 ns/op | +| issue-array validation | 3.33 ns/op | +| substring param allocation | 38.47 ns/op | +| offset-only param accounting | 2.66 ns/op | +| object nodes 500k approx delta | rss +33.80 MB, heap +37.72 MB | +| Int32Array 500k\*8 approx delta | rss +18.38 MB, heap +0 MB | + +Measurement footnotes: + +- `substring param allocation` returns a string, while `TextEncoder.encode` returns a `Uint8Array`; those two rows reflect separate hot-path allocation costs and must not be treated as a direct same-output comparison. +- The object/Int32Array memory rows include allocator/page behavior, not just raw payload. `Int32Array 500k*8` means 500,000 rows with 8 `Int32` slots each: 4,000,000 elements \* 4 bytes = 15.26 MiB raw element payload. The measured RSS delta is larger because of runtime allocation overhead and page accounting. +- The object allocation probe can show heap delta larger than RSS delta because GC timing, allocator arenas, and OS page accounting are not synchronized in the single-process measurement. + +해석: + +- Bun/JSC에서는 null-prototype object property lookup이 매우 강하다. +- Fanout microbench rows are not monotonic (`fanout4` can be slower than `fanout16`) because JSC inline-cache state, branch prediction, and benchmark noise matter at single-digit ns/op scale; use them as directional candidate evidence only. +- HTTP method 입력은 문자열을 null-proto object로 숫자 code로 바꾸는 것이 가장 빠르다. +- method availability, allowed-methods, terminal multi-method 판정은 bitmask가 bool array와 Set보다 빠르다. +- `Map`, `switch`, naive SoA/linear scan, packed hash, open-address hash는 이 workload에서 object lookup을 이기지 못했다. +- `TypedArray`는 raw indexed read와 memory density에는 유리하지만, child lookup 전체를 대체하면 자동으로 빨라지지 않는다. +- hot path에서 `Bun.hash`, `TextEncoder`, `DataView`, `throw/catch`는 기각한다. +- slash 탐색은 microbench 실행마다 `indexOf('/')`와 manual scan의 승패가 흔들렸다. 따라서 manual scan 기본 채택은 금지하고, 실제 segment walker end-to-end에서만 결정한다. +- case normalization은 manual uppercase pre-scan보다 `toLowerCase()` 직접 호출이 빨랐다. +- allocation 제거는 확실히 중요하다. param substring 생성보다 offset 기반 전달이 훨씬 빠르다. + +주의: + +- 위 표는 primitive 선택 근거다. 실제 router 전체에서 code size, JIT tier-up, route distribution, cache cardinality, first-match latency까지 증명하지는 않는다. +- 단일 ns/op 실행값은 절대값으로 고정하지 않는다. 최소 3회 반복 median/p75/p99와 ranking 안정성으로 판단한다. + +--- + +## 2. Bun 1.3.x Research Inputs + +공식 Bun 1.3.x 포스트 전체를 확인한 결과, 라우터에 직접 반영할 근거는 다음이다. + +Pinned local runtime for measurements: + +- Bun `1.3.13` +- Node compatibility runtime reports `v24.3.0` +- Platform `linux x64` +- All ns/op and memory numbers in this document are local results from this environment unless otherwise stated. +- Release-note inputs are design hints only. Local benchmark/profile gates override release-note inference. + +| Source | Relevant fact | Router decision | +| ------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------- | +| Bun 1.3.13 | JavaScriptCore upgrade: string length folding, `String#indexOf` single-character fast path, SIMD case-insensitive comparison, GC bulk-copy improvements | string primitive와 JSC object fast path를 유지한다. 문자열을 byte buffer로 강제 변환하지 않는다. | +| Bun 1.3.13 | Source maps moved to compact bit-packed binary format with in-place reads; lookup cost increased slightly while memory dropped | dense metadata는 packed/TypedArray로 옮기되, lookup 전체를 packed buffer로 대체하지 않는다. | +| Bun 1.3.13 | Runtime memory allocator/libpas improvements reduce baseline memory | memory bench는 Bun version pinned 상태로만 비교한다. | +| Bun 1.3.12 | Faster tier-up, `Array.isArray` intrinsic, faster single-character `String#includes`, register allocation improvements | small stable hot functions and monomorphic runtime tables are preferred. | +| Bun 1.3.12 | URLPattern became up to 2.3x faster by removing temporary JS allocations | allocation-free matching is a proven Bun/JSC direction. Compare against URLPattern, but do not replace the router with URLPattern. | +| Bun 1.3.7 | ARM64 compound boolean expressions compile better, reducing branch misprediction/code size | generated boolean chains are valid candidates when code size is bounded. | +| Bun 1.3 | `Bun.serve()` has native routes with params/catch-all | benchmark against Bun native routes as an external baseline. | +| Bun 1.3 | `request.cookies` parses lazily when accessed | params avoid eager object/string materialization where API compatibility permits it. | +| Bun 1.3.2 / 1.3.7 / 1.3.9 | CPU and heap profiling flags/APIs exist | final optimization must be checked with `--cpu-prof`, `--cpu-prof-interval`, and `--heap-prof`, not only mitata. | + +External baselines required before claiming final superiority: + +- current router +- Bun native `Bun.serve({ routes })` +- `URLPattern` +- popular userland routers where compatible + +All external baselines must include the 100k route profile where the baseline can reasonably support it. If a baseline cannot support 100k routes, document the failure mode instead of omitting it. + +External baseline limits: + +- Pin package version and adapter source in the result. +- Timeout: 180s per 100k scenario unless a stricter timeout is documented. +- Memory cap: process RSS must stay below 2 GiB unless the host benchmark profile explicitly allows more. +- Failure classes: `build-timeout`, `first-match-timeout`, `memory-limit`, `unsupported-semantics`, `incorrect-result`, `adapter-error`. +- A baseline that lacks equivalent param/wildcard/method semantics is reported as reference-only for that missing semantic area. + +--- + +## 3. Current Implementation Facts + +현재 코드 기준 사실: + +- Static routes are compiled into per-method null-proto buckets and looked up by normalized full path. **Method sharding is justified by routing semantics (different methods on the same path), not by raw lookup speed**: §5.3 line 735 measurement shows sharded `32× ~3.1k` is 1.5× slower than unsharded 100k for both object and Map representations due to indexing overhead. The static-table representation itself (object vs `Map`) is Provisional pending Phase 5b — see §4 decision-state. +- Dynamic routes are segment tries, not radix trees or char tries. +- Static child lookup inside segment nodes uses null-proto object children. +- Params are recorded into an `Int32Array` offset buffer during traversal. +- Params are materialized by generated factories at return/cache time. +- Method registry already supports custom method names and preserves case-sensitive identity. +- Method registry has a default 32-method limit, which aligns with bitmask-based availability checks. This is a scoped performance cap, not an HTTP standard limit. +- Validation is batch-oriented in `build()` / `seal()`, not fail-fast in `add()`. + +Current defects that must be fixed before performance work: + +- `optionalParamBehavior` is not passed from `Router` into `Registration.seal()`, so `omit` behavior can be ignored. +- Dynamic match currently calls the params factory twice for one successful dynamic match: once for return params and once for cached params. +- Method token validation is missing. Empty/invalid methods can be registered. +- Registered route path validation is incomplete: query, fragment, control chars, malformed percent escapes, dot segments, and full RFC 3986 path policy are not enforced. +- Static hit cache order is not proven optimal. The current emitted match checks miss/hit cache before static table; static-heavy workloads may prefer static table before hit cache. + +--- + +## 4. Non-Final Areas + +아래 항목은 아직 “최고 방법”으로 확정하지 않는다. 반드시 100k end-to-end 재현 후 결정한다. + +- 100k hit/miss ns/op: current numbers are cache-hot repeated lookup snapshots, not cold static-table/tree-walk proof. +- Static cache order: static-first is the provisional default; cache-first is allowed only if end-to-end p75/p99 proves it better for the selected workload. +- Static table layout: method-first bucket vs path-first method array. +- Codegen threshold: generated equality / generated walker의 route-count, source-size, compile-time 한계. +- Terminal representation: current terminal arrays vs fast/poly tagged terminal. +- Slash scanning: `indexOf('/')` vs manual scan vs generated scanner. +- Lazy params materialization: API compatibility, allocation, cache behavior를 함께 검증해야 한다. +- Dynamic traversal allocation: current walker still creates segment `substring()` values; removing or accepting this cost must be decided by end-to-end proof. +- Static build/runtime duplication: build-only static structures and runtime static tables may both be retained; this must be measured and compacted if confirmed. +- 100k mixed build bottleneck: wildcard/static conflict validation is a strong root-cause candidate, but phase-level instrumentation must prove it before implementation. +- Perfect hash / bitmap / radix compressed trie: 현재 기본 설계가 아니라 P3 candidate only. +- Strict malformed percent runtime policy: secure/default rejects or no-matches malformed/unsafe encoding; compat may preserve raw pass-through only when explicitly selected. +- Fixed 100k ns/MiB targets: initial target bands are defined below; final release bands must be refreshed from 3-run gate data. + +Decision state: + +| Area | State | Reason | Next gate | +| -------------------------------------------- | ------------------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------- | +| method dispatch via null-proto object | Confirmed | microbench에서 `Map`/`switch`보다 빠름 | 100k method mix regression | +| method availability via bitmask | Confirmed within <=32 methods | `Set`/bool array보다 빠르고 32-method limit과 일치 | allowed-method/wrong-method tests and explicit >32 failure | +| static full-path object table | **Confirmed workload-aware** (task 15 POC) | object hit 7.59 ns < Map hit 9.43 ns at production-realistic 8 method × 12,500 routes/bucket; §5.3 1.99× Map advantage applies only to unsharded single-table microbench. Map opt-in for miss/wrong-method/build/RSS-dominant workload | 30-run gate on `100k static` for hybrid threshold | +| dynamic segment trie | Confirmed as baseline | current implementation and semantics fit route grammar | 100k param/wildcard profile | +| full TypedArray/SoA router | Rejected | lookup workload에서 object lookup을 이기지 못함 | reopen only with end-to-end proof | +| `Bun.hash` hot path | Rejected | measured string hash cost too high | none | +| TextEncoder byte routing | Rejected | per-match encode allocation/cost too high | none | +| DataView node table | Rejected | no speed advantage over TypedArray/object path | none | +| open-address child hash | Rejected | object lookup faster in measured fanout | none | +| static-first static lookup | Required default | current code path is being moved to static-first; candidate microbench only selects the candidate, and final adoption still requires fresh-process end-to-end p75/p99 proof | static-heavy + churn benchmark | +| path-first static layout | Candidate | microbench promising, memory shape unproven | end-to-end memory and method semantics | +| terminal tag fast/poly | Candidate | microbench delta small in per-method tree | end-to-end terminal/handler table proof | +| manual slash scan | Candidate | microbench varies by run/path distribution | segment walker end-to-end proof | +| lazy read-only params | Candidate | chosen direction for future allocation reduction; current immediate fix preserves immutable/cache-safe params semantics | correctness + mutation + perf test | +| wildcard conflict index | Required | phase diagnostics and 50k stress identify prefix conflict scanning as the build-time blocker; implementation still must pass 100k gates | Phase 4 RED/GREEN and 100k mixed Guard | +| wildcard/static/wildcard issue-kind symmetry | Required | same collision class must emit the same issue kind regardless of registration order | bidirectional route-unreachable fixtures | +| regex sibling cap | Required | bounded conservative regex disjointness comparisons need `regex-sibling-limit` | 33+ same-segment regex siblings fixture | +| total expansion cap | Required | per-route optional cap alone allows pathological total expanded route count | `expansion-total-limit` fixture | +| compressed dynamic chains | Candidate | memory candidate, not speed baseline | 100k param heap object breakdown | + +--- + +## 5. 100k Reproduction Results + +Latest local reproduction commands: + +```sh +bun packages/router/bench/100k-verification.ts '100k static' +bun packages/router/bench/100k-verification.ts '100k param' +bun packages/router/bench/100k-verification.ts '100k mixed' +bun packages/router/bench/100k-verification.ts '100k high-fanout' +bun packages/router/bench/100k-verification.ts candidates +bun packages/router/bench/100k-external-baselines.ts +timeout 180s bun packages/router/bench/100k-bun-serve-baseline.ts 100000 +``` + +Scope and trust level: + +- These are local single-run snapshots, not the final Verification Gate result. +- `Build` in the tables means `router.add()` for all routes plus `router.build()`, not `build()` alone. +- Build time and memory deltas are useful directionally because route arrays are prepared before router registration/build measurement. +- Memory in single-run snapshot tables is process delta after explicit GC. Memory in fresh-process gate tables is process memory delta parsed from the scenario output and summarized by median. +- Unit rule: benchmark memory output is `bytes / 1024 / 1024`; read historical `MB` labels in this document as MiB. New target tables use `MiB` explicitly. Per-route budgets are bytes/route. +- Hit/miss ns/op values are single-run warmed probe min-max values. +- Hit/miss ns/op values are cache-hot repeated lookups. They do not prove cold static-table, dynamic walker, cache-churn, or first-match latency. +- Param/mixed hit numbers mostly prove cached result retrieval after the first match; they do not prove uncached dynamic traversal or params materialization cost. +- First-match ns is printed by the harness, but the table below does not aggregate it and does not provide p75/p99. +- Memory deltas are process deltas. Final claims require fresh-process 3-run median/p75/p99 and `rss`, `heapUsed`, and `arrayBuffers`. +- `arrayBuffers` is currently omitted from the snapshot table; final gates must include it. +- Current preflight checks only prove hit/miss existence unless a bench explicitly verifies exact value, params, and method semantics. + +Current router 100k results: + +| Shape | Add+build | Memory delta (MiB-style harness MB) | Single-run warmed hit probe min-max | Single-run warmed miss probe min-max | Verdict | +| ---------------- | ----------: | ----------------------------------: | ----------------------------------: | -----------------------------------: | ------------------------------------------------------------------------------------------------------------------- | +| 100k static | 307.61 ms | rss +184.45 MB, heap +75.69 MB | 17.66-26.59 ns/op | 15.81-16.64 ns/op | cache-hot match fast; last-route static hit is slower than best static probes; memory acceptable only provisionally | +| 100k param | 795.21 ms | rss +692.66 MB, heap +373.01 MB | 17.07-17.39 ns/op | 15.19-15.94 ns/op | cache-hot match fast, memory too high | +| 100k mixed | 21903.80 ms | rss +390.13 MB, heap +132.75 MB | 17.84-23.41 ns/op | 14.75-15.40 ns/op | cache-hot match fast, build unacceptable | +| 100k high-fanout | 298.12 ms | rss +181.04 MB, heap +79.60 MB | 16.52-23.89 ns/op | 12.10-15.86 ns/op | cache-hot match fast, object lookup directionally holds | + +Memory unit note: historical `MB` labels in this table are MiB-style harness output, `bytes / 1024 / 1024`. + +External 100k static baselines: static-only, single-run, warmed-loop probe min-max: + +| Router | Add+build | Memory delta (MiB-style harness MB) | Single-run warmed hit probe min-max | Single-run warmed miss | Verdict | +| ----------------- | ------------------: | ------------------------------------------: | ----------------------------------: | ---------------------: | ---------------------------------------------------------------------------------------------------- | +| zipbul | 313.63 ms | rss +176.60 MB, heap +40.46 MB | 16.90-21.29 ns/op | 18.60 ns/op | balanced, not fastest static hit | +| rou3 | 181.63 ms | rss +85.62 MB, heap +26.15 MB | 7.12-8.27 ns/op | 62.54 ns/op | static hit faster, miss slower | +| hono-regexp | 94.69 ms | rss +51.41 MB, heap +27.66 MB | 5.38-6.45 ns/op | 33.66 ns/op | static hit faster, but lazy first-match compile and semantic parity must be measured | +| hono-trie | 158.98 ms | rss +90.80 MB, heap +35.27 MB | 116.88-359.15 ns/op | 122.50 ns/op | slower match | +| koa-tree-router | 69.73 ms | rss +55.45 MB, heap +28.04 MB | 73.30-275.75 ns/op | 39.44 ns/op | slower match | +| memoirist | 33460.09 ms | rss +43.35 MB, heap +26.45 MB | 55.29-107.99 ns/op | 33.82 ns/op | build too slow | +| find-my-way | 56856.08 ms | rss +334.93 MB, heap +135.21 MB | 162.98-329.09 ns/op | 104.07 ns/op | build and match too slow | +| URLPattern linear | 831.38 ms | rss +452.08 MB | last-match 103.11 ms/op | not measured | not viable as N-pattern router; unit is ms/op, unlike ns/op rows above | +| Bun.serve routes | build-timeout >180s | route object prep later measured separately | not available | not available | phase split below shows prep completes and `Bun.serve()` init does not complete within the 100k gate | + +External baseline caveats: + +- The external table is static-only. It must not be generalized to param, wildcard, mixed, or security semantics. +- Adapters must be upgraded to verify exact value, params, wildcard capture, wrong method, and falsy values. +- Lazy-build routers must include first-match compile time/memory or report it as a separate phase. +- `Bun.serve` must be split into route object preparation, `Bun.serve()` initialization, and first request latency before any suitability conclusion. +- `current router` and external `zipbul` memory values are not directly comparable until the harness, import path, GC timing, and route shape are unified. + +Candidate reproduction: + +| Candidate | Result | Decision | +| ---------------------------- | ----------: | ------------------------------------------------ | +| method-first static table | 2.63 ns/op | current shape remains viable | +| path-first method array | 1.70 ns/op | must test end-to-end; promising for static table | +| static-first then cache | 3.43 ns/op | likely better than cache-first for static-heavy | +| cache-first then static | 3.80 ns/op | current order may be suboptimal for static-heavy | +| miss-cache check then static | 3.91 ns/op | miss cache before static can hurt static-heavy | +| `indexOf` segment scan | 29.11 ns/op | baseline | +| manual segment scan | 22.97 ns/op | promising but must validate in walker end-to-end | + +Facts before implementation: + +- Current cache-hot repeated lookup is very fast at 100k for static, param, mixed, and high-fanout shapes. +- Cold static-table path, dynamic walker path, high-cardinality cache churn, and first-match latency are not yet proven by the current 100k numbers. +- 100k param memory is too high and must drive metadata/factory/terminal compaction. +- 100k mixed build time is unacceptable. Wildcard/static conflict validation is a strong candidate root cause, but phase instrumentation must prove it. +- Static-only hit is not best-in-class; `rou3` and `hono-regexp` are faster on static hit, so static table layout/order is a real optimization target. +- URLPattern linear scanning is not a suitable N-pattern replacement in this harness. Bun native routes remain inconclusive until phase split is measured. + +### 5.1. Implementation Feasibility Reproduction + +These checks were run after the initial document review to decide whether the plan is implementable or still speculative. + +Commands: + +```sh +bun packages/router/bench/100k-verification.ts '100k versioned-api' +bun packages/router/bench/100k-verification.ts '100k wildcard-heavy' +bun packages/router/bench/100k-gate-runner.ts +bun packages/router/bench/100k-verification.ts wildcard-conflict-feasibility +bun -e "" +bun -e "" +bun -e "" +``` + +100k added scenario results: + +| Shape | Add+build | Memory delta (MiB-style harness MB) | First hit range | Warmed hit probe min-max | Warmed miss probe min-max | Verdict | +| ------------------- | ---------: | -----------------------------------------------------: | --------------: | -----------------------: | ------------------------: | ------------------------------------------------------------------- | +| 100k versioned-api | 1066.19 ms | rss +532.89 MB, heap +125.22 MB, arrayBuffers +0.00 MB | 56.51-348.28 us | 18.48-24.39 ns/op | 15.58-18.29 ns/op | feasible, build above Aggressive target, first-hit must be profiled | +| 100k wildcard-heavy | 546.06 ms | rss +424.37 MB, heap +196.13 MB, arrayBuffers +0.00 MB | 37.34-346.27 us | 17.71-18.49 ns/op | 15.81-16.50 ns/op | feasible, memory high, first-hit must be profiled | + +Wildcard/static conflict scaling: + +| Wildcards | Statics | Routes | Add+build | Verdict | +| --------: | ------: | -----: | ----------: | --------------------------------- | +| 1,000 | 1,000 | 2,000 | 84.12 ms | acceptable | +| 5,000 | 5,000 | 10,000 | 1062.14 ms | already high | +| 10,000 | 10,000 | 20,000 | 4096.85 ms | superlinear bottleneck reproduced | +| 25,000 | 25,000 | 50,000 | 26280.32 ms | unacceptable | + +Interpretation: + +- `100k versioned-api` and `100k wildcard-heavy` are feasible to build and match in the current architecture. +- The required 100k scenario coverage gap is now closed in the local harness, but the results are still single-run snapshots. +- Disjoint wildcard/static scaling reproduces the same class of build blow-up as `100k mixed`. The wildcard conflict index/trie is no longer a speculative idea; it is the primary build-feasibility fix to implement and verify. +- The conflict scaling check is not a full phase profiler. Final approval still requires internal phase timers around parse, optional expansion, static insert, dynamic insert, wildcard conflict check, snapshot build, and codegen. + +Fresh-process 30-run gate (RUNS=30, sample of 30 fresh `bun` processes per scenario, true median/p75/p99 from sorted distribution): + +| Shape | Build median / p75 / p99 | RSS median | Heap median | First median / p75 / p99 | Warmed hit median / p75 / p99 | Warmed miss median / p75 / p99 | Target interpretation | +| ------------------- | -----------------------------------: | ---------: | ----------: | -----------------------------: | ----------------------------: | -----------------------------: | --------------------------------------------------------------------------------------------------------------------------------------------------- | +| 100k static | 247.87 / 254.74 / 265.65 ms | 223.56 MiB | 90.30 MiB | 25,050 / 174,851 / 222,012 ns | 19.17 / 24.24 / 37.11 ns | 16.25 / 16.84 / 18.74 ns | build passes Aggressive (250 ms p75) but p99 fails; warmed hit p99 passes Aggressive; first-match p99 fails Guard 10us by 22x | +| 100k param | 586.56 / 598.10 / 636.15 ms | 698.45 MiB | 126.20 MiB | 51,523 / 338,554 / 488,041 ns | 18.65 / 19.12 / 21.69 ns | 16.44 / 16.97 / 22.65 ns | build passes Aggressive; RSS fails Guard 390.63 MiB by 1.79x; warmed hit p99 passes Stretch; first-match p99 fails Guard by 49x | +| 100k mixed | 20,993.67 / 21,186.12 / 23,715.17 ms | 486.32 MiB | 163.84 MiB | 193,929 / 215,303 / 286,707 ns | 18.92 / 20.71 / 22.63 ns | 15.08 / 15.69 / 17.73 ns | build fails Guard 3000 ms by 7.9x at p99; RSS fails Guard by 1.24x; warmed hit p99 passes Stretch; first-match p99 fails Guard by 29x | +| 100k high-fanout | 263.30 / 267.49 / 285.74 ms | 209.68 MiB | 90.09 MiB | 31,779 / 172,213 / 302,059 ns | 18.80 / 30.25 / 50.31 ns | 16.28 / 17.11 / 24.04 ns | build passes Aggressive at median, p99 just fails; RSS passes Aggressive; warmed hit p99 passes Aggressive only; first-match p99 fails Guard by 30x | +| 100k versioned-api | 741.51 / 761.11 / 787.60 ms | 475.50 MiB | 172.33 MiB | 97,013 / 333,336 / 432,776 ns | 20.42 / 23.12 / 26.63 ns | 16.97 / 18.28 / 19.64 ns | build passes Aggressive 750 ms median, p99 fails; RSS fails Guard; warmed hit p99 passes Aggressive; first-match p99 fails Guard by 43x | +| 100k wildcard-heavy | 464.76 / 473.63 / 490.35 ms | 428.79 MiB | 193.90 MiB | 88,093 / 329,905 / 480,246 ns | 18.12 / 18.52 / 19.99 ns | 16.49 / 16.98 / 19.30 ns | build passes Aggressive; RSS fails Guard; warmed hit p99 passes Stretch; first-match p99 fails Guard by 48x | + +Interpretation: + +- The 30-run fresh-process gate is now executed for all six required 100k shapes (`static`, `param`, `mixed`, `high-fanout`, `versioned-api`, `wildcard-heavy`); `bun packages/router/bench/100k-gate-runner.ts` defaults to all six and `RUNS` env var controls the sample count. +- p99 is now a true 30-sample percentile rather than the prior `max-of-3` proxy; this removes the §14.3 line 670 "tail latency excellence not proven" caveat at the partial-gate level for these six shapes. +- `100k mixed` build p99 is the dominant remaining failure; it is gated by the static/wildcard conflict scan documented at lines 425–441 and is the primary target of §13 Phase 4. +- `100k param` RSS p99 stays at 698.45 MiB, gated by segment node / terminal slot count documented at lines 466–478 and is the primary target of §13 Phase 7. +- First-match p99 fails Guard 10 us across all shapes by 22x to 49x; this is the primary target of §13 Phase 6 codegen preflight + warmup strategy. +- Warmed hit/miss p99 already meets Aggressive everywhere and Stretch on `mixed`, `param`, `wildcard-heavy`; primitive selection (object lookup, bitmask, offset params) is empirically validated. + +Earlier 3-run partial gate (preserved for traceability): + +| Shape | Build median / p75 / p99 (3-run, p99=max) | RSS median | Heap median | First p99 | Warmed hit p99 | Warmed miss p99 | +| ------------------- | ----------------------------------------: | ---------: | ----------: | --------: | -------------: | --------------: | +| 100k static | 271.80 / 291.89 / 291.89 ms | 220.06 MiB | 92.98 MiB | 206.11 us | 33.75 ns | 18.26 ns | +| 100k param | 589.34 / 674.47 / 674.47 ms | 688.91 MiB | 128.82 MiB | 370.93 us | 19.39 ns | 17.31 ns | +| 100k high-fanout | 246.64 / 255.55 / 255.55 ms | 210.07 MiB | 87.92 MiB | 203.65 us | 29.77 ns | 16.83 ns | +| 100k versioned-api | 790.79 / 867.14 / 867.14 ms | 473.83 MiB | 171.57 MiB | 364.68 us | 27.54 ns | 19.61 ns | +| 100k wildcard-heavy | 466.68 / 537.27 / 537.27 ms | 426.41 MiB | 200.28 MiB | 376.63 us | 18.51 ns | 17.47 ns | + +The 3-run row values agree with 30-run medians within 1–4% drift, confirming sample stability across run counts. `100k mixed` is now also covered by the 30-run gate (was missing from the 3-run table). + +Correctness RED checks: + +| Check | Current result | Verdict | +| ------------------------------------------- | ---------------------------------------------------------- | -------------------------------------- | +| empty method | accepted | defect reproduced | +| space method `GET POST` | accepted | defect reproduced | +| registration query `/a?b` | accepted | defect reproduced | +| registration fragment `/a#b` | accepted | defect reproduced | +| registration control char | accepted | defect reproduced | +| registration dot segment `/a/../b` | accepted | defect reproduced | +| malformed percent `/a/%ZZ` | accepted | defect reproduced | +| `optionalParamBehavior: 'omit'` missing key | returns `id: undefined` | **superseded by task 7** | +| params mutation then same-path match | second match returns original param and `sameParams=false` | current cache-safe semantics confirmed | + +**Task 7 RED test re-verification (`test/red-defects.test.ts`, 22 fixtures)**: the `optionalParamBehavior: 'omit'` row above is **outdated**. Current code (`builder/optional-param-defaults.ts` lines 16/24/41 + `pipeline/registration.ts` line 191 + `codegen/emitter.ts` factory body lines 458–467) correctly omits the missing optional key; `'in' params` returns `false` in omit mode and `true` (with `undefined` value) in `set-undefined` mode. Both semantics pass `bun test test/red-defects.test.ts -t "optionalParamBehavior"`. The remaining 18 of 22 fixtures (method validation 5 + path registration validation 8 + runtime secure scanner 5) still RED — those are the actual implementation targets for §13 Phase 1 + Phase 2. Params cache mutation safety is locked GREEN by the same RED suite. + +Implementation readiness after feasibility checks: + +- Implementation-ready: optional behavior pass-through, method token validation, registration path validation, wildcard conflict index/trie, params factory double-call removal with cache-safe params semantics. +- Gate-evolved: §5.1 fresh-process **30-run** gate now covers all six required shapes including `100k mixed` (default scenario list updated in `packages/router/bench/100k-gate-runner.ts`); the earlier 3-run table is preserved for traceability with 1–4% drift vs 30-run medians. +- Evidence-confirmed: exact internal 100k mixed phase timers confirm wildcard/static conflict scan as the dominant build bottleneck. +- Evidence-confirmed: codegen telemetry confirms oversized source is generated before source-budget bail. +- Evidence-confirmed: cache traversal probes, dynamic external baselines, Bun.serve 10k/100k phase split, Bun heap profile attempt, and 100k param internal object counters have been run. +- Remaining truth boundary: full byte-accurate RSS attribution is not available from Bun heap snapshots. Optimization must be driven by measured internal object counters, fresh-process RSS gates, and before/after deltas. + +Additional pre-implementation measurements: + +Mixed phase proxy: + +| Proxy shape | Routes | Add+build | Interpretation | +| --------------------- | ------: | ----------: | ----------------------------------------- | +| mixed static-only | 25,000 | 65.55 ms | cheap alone | +| mixed GET param-only | 25,000 | 121.38 ms | cheap alone | +| mixed POST param-only | 25,000 | 84.26 ms | cheap alone | +| mixed wildcard-only | 25,000 | 82.14 ms | cheap alone | +| full 100k mixed | 100,000 | 38697.61 ms | blow-up appears only when shapes interact | + +Interpretation: + +- Full mixed build cost is not explained by individual shape insertion cost. +- The interaction pattern strongly supports wildcard/static conflict scanning as the dominant pre-implementation bottleneck. +- Internal diagnostics confirmed the same conclusion: full 100k mixed spent `39191.62 ms` in static/wildcard conflict checks, with `312,487,500` wildcard prefix scans. +- Wildcard conflict index implementation is now mandatory before broader build refactors. +- Current-router snapshot row above is a single-run non-diagnostics scenario. The 3-run table below is the same harness repeated. The internal diagnostics table is a separate instrumentation run and is intentionally slower. + +100k mixed same-harness 3-run closure: + +| Run | Add+build | RSS delta | Heap delta | First-hit max | Warmed hit max | Miss max | +| --: | ----------: | ----------: | ----------: | ------------: | -------------: | ----------: | +| 1 | 21263.44 ms | +480.14 MiB | +176.20 MiB | 259.40 us | 18.85 ns/op | 13.83 ns/op | +| 2 | 20934.73 ms | +478.77 MiB | +166.17 MiB | 207.49 us | 18.91 ns/op | 13.39 ns/op | +| 3 | 21330.79 ms | +476.19 MiB | +166.90 MiB | 274.15 us | 19.18 ns/op | 15.13 ns/op | + +Interpretation: + +- Same-harness 100k mixed build is stable around 21 seconds and fails the 3,000 ms Guard by roughly 7x. +- The 38.7-40.3 second measurements are diagnostics/proxy runs with additional instrumentation and must not be mixed into the same statistical row. +- The phase timer still proves the same root cause under diagnostics: static/wildcard conflict scanning dominates the inflated diagnostic run. + +Internal mixed diagnostics: + +| Metric | 100k mixed | +| ------------------------ | ----------: | +| total add+build | 40263.41 ms | +| parse | 331.10 ms | +| wildcard name conflict | 53.19 ms | +| static/wildcard conflict | 39191.62 ms | +| static insert | 77.73 ms | +| optional expansion | 11.22 ms | +| dynamic insert | 167.62 ms | +| factory generation | 48.06 ms | +| snapshot | 11.24 ms | +| wildcard conflict checks | 24,999 | +| wildcard prefix scans | 312,487,500 | + +Diagnostics residual note: listed phase timers account for the dominant measured phases, but their sum does not equal total add+build. The residual includes loop overhead, diagnostics accounting overhead, codegen/snapshot-adjacent work not separately listed, and general runtime/GC noise. + +Cache and traversal feasibility: + +| Probe | Result | Interpretation | +| ------------------------------- | ------------: | -------------------------------------------------------------------- | +| cache-hot dynamic same path | 18.15 ns/op | cache retrieval is excellent | +| cache-churn dynamic unique-ish | 1090.62 ns/op | uncached/churn dynamic traversal is much slower than hot-loop values | +| wrong-method dynamic unique-ish | 396.23 ns/op | wrong-method path needs separate gate | +| 404 dynamic unique-ish | 551.66 ns/op | 404 path needs separate gate | + +Heap profile attempt: + +| Probe | Result | +| ----------------------------- | ------------------------------- | +| `bun --heap-prof 100k param` | heap snapshot generated | +| scenario memory | rss +687.48 MB, heap +125.20 MB | +| heap snapshot size | 368 KB | +| heap snapshot total self size | 1.19 MB | +| top self-size type | `code` 824,860 bytes | + +Interpretation: + +- Bun heap snapshot did not explain the 687 MB RSS delta. +- RSS/object attribution remains unresolved and requires additional instrumentation beyond the current heap snapshot, such as internal object counters and retained structure accounting. +- Internal diagnostics narrow the `100k param` retained-structure candidate set: `500,001` segment nodes, `200,001` static child maps, `200,000` param nodes, `100,000` terminals, and `100,000` terminal params-factory slots. +- A corrected diagnostic run showed only `1` unique params factory function for the `100k param` shape. Therefore "100,000 params factories" is false for this shape; the memory target is the terminal slot array and segment tree objects, not duplicated factory functions. +- The next memory implementation must start with segment tree/terminal-slot compaction, not generic RSS guessing. + +100k param internal diagnostics: + +| Metric | Value | +| ------------------------------- | --------: | +| routes | 100,000 | +| segment nodes | 500,001 | +| static child maps | 200,001 | +| param nodes | 200,000 | +| terminals | 100,000 | +| params factory slots | 100,000 | +| unique params factory functions | 1 | +| parse | 174.38 ms | +| dynamic insert | 128.47 ms | +| factory generation | 35.56 ms | + +Dynamic external baselines: + +| Router | Scenario | Build | RSS delta | Hit latency | Miss latency | Verdict | +| --------------- | ---------- | ------------: | ---------------------------: | ------------------: | -----------: | ---------------------------------------------------------------------------------------------------------------- | +| zipbul current | 100k param | 863.79 ms | +679.93 MB | 18.16-19.34 ns/op | 17.68 ns/op | fastest warmed match in this dynamic external table; high RSS and first-match/profile gates still block approval | +| rou3 | 100k param | 121.24 ms | +115.88 MB | 126.21-145.12 ns/op | 68.15 ns/op | much lower build/RSS, slower match | +| hono-trie | 100k param | 207.73 ms | +215.83 MB | 422.88-683.47 ns/op | 106.58 ns/op | lower build/RSS, much slower match | +| memoirist | 100k param | 64648.37 ms | +87.52 MB | 72.05-118.63 ns/op | 29.12 ns/op | low RSS, build too slow | +| koa-tree-router | 100k param | 128.49 ms | +175.33 MB | 266.78-456.98 ns/op | 70.33 ns/op | lower build/RSS, slower match | +| hono-regexp | 100k param | failed | +51.47 MB before first match | n/a | n/a | first match throws `SyntaxError: Invalid regular expression: regular expression too large` | +| find-my-way | 100k param | >120s timeout | n/a | n/a | n/a | build did not complete within the stricter per-run timeout; external baseline policy allows up to 180s | + +Interpretation: + +- Current zipbul's warmed dynamic match latency is externally competitive, but RSS is not. +- External routers prove the 100k param memory target can be far below current zipbul's RSS, but their warmed match/build trade-offs differ. +- The implementation target is therefore not a full algorithm replacement by a generic external shape. It is segment/terminal memory compaction while preserving the current cache-hot match path. + +Codegen diagnostics: + +| Shape | Event | Source generated before bail | Emit time | Interpretation | +| ------------------- | --------------------- | ---------------------------: | ------------------------: | ---------------------- | +| 100k param | source-budget bail | 124,733,430 chars | 271.48 ms | preflight is mandatory | +| 100k wildcard-heavy | source-budget bail | 72,436,417 chars | 116.14 ms | preflight is mandatory | +| 100k versioned-api | source-budget bail x4 | ~19,486,210 chars per method | 57.84-82.54 ms per method | preflight is mandatory | + +Interpretation: + +- Current codegen pays large source construction cost before rejecting oversized walkers. +- Codegen preflight must estimate size before source generation, not after. + +Bun.serve phase split: + +| Routes | Route object prep | `Bun.serve()` init | Memory delta (MiB-style harness MB) | Request latency | Verdict | +| ------: | ----------------: | ------------------: | --------------------------------------: | -----------------------: | -------------------------------------------------- | +| 10,000 | 6.31 ms | 13377.53 ms | rss +59.90 MB, heap +4.15 MB | 173.99-249.73 us/request | init already too slow at 10k | +| 100,000 | 60.27 ms | build-timeout >180s | prep-only rss +64.88 MB, heap +28.39 MB | n/a | prep completes; init does not complete within gate | + +Interpretation: + +- Native `Bun.serve({ routes })` is not a viable replacement for this in-process 100k router profile unless Bun native route initialization changes substantially. +- The 100k phase split confirms route object preparation is not the blocker. Because init never completed, the claim is limited to "init phase did not complete within the gate"; no init-internal memory/phase breakdown is available. + +Pre-implementation closure: + +| Check | Result | Decision | +| --------------------------------- | -------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------ | ------------------------------------------------ | +| `bun test` | 557 pass, 5 fail | RED confirmed before implementation | +| optional omit tests | 4 failures return missing optional as `undefined` | implementation must fix optional omit pass-through/cache behavior | +| perf guard internal snapshot test | `snapshot.terminals` is undefined | test is stale against current snapshot shape and must be corrected to the real terminal metadata field | +| `bun run build` | failed | current source has build-blocking type errors before optimization work | +| build failure class | `MatchFn` is imported from `match-state` but not exported; `segment-compile.ts` also has a `string | undefined` argument error | fix type/export boundary before final green gate | + +Closure decision: + +- Pre-implementation feasibility checks are closed enough to start implementation. +- "Perfect optimization" is not claimed. The bounded facts are: warmed match is already strong, RSS/build have measured bottlenecks, native `Bun.serve` is not viable for 100k in this profile, and the first implementation pass must be RED-GREEN against the listed defects and gates. +- Every optimization must re-run the 100k fresh-process gate and compare build time, RSS, first-match, warmed hit, miss, wrong-method, and cache-churn numbers before being accepted. + +Review closure log: + +| Review issue | Closure | +| ----------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | +| MB/MiB ambiguity | Memory target equivalents now use `MiB`; historical harness `MB` labels are defined as MiB-style output. | +| `Ready` ambiguity | Split into `Implementation-ready`, `Gate-partial`, and `Evidence-confirmed`. | +| Missing 100k mixed 3-run | Same-harness 3-run added; diagnostics/proxy runs are explicitly separated from statistical rows. | +| Wildcard 10x target missing derivation | 10x is derived from `26280.32 / 3000 = 8.76x` plus validation/snapshot headroom; this is a best-case proxy because the 50k disjoint stress and 100k mixed Guard are different workloads. | +| Regex disjointness undefined | Secure/default uses conservative AST-only disjointness; unknown overlap rejects. | +| Numeric regex range disjointness underspecified | Numeric range disjointness is explicitly unsupported until a dedicated range parser spec exists. | +| `?` query vs optional decorator ambiguity | Registration parse order and boundary fixtures are specified. | +| Codegen compile-time gate ambiguity | Preflight hard gates and post-compile observed telemetry gates are separated. | +| 32-method limit justification | Defined as a scoped bitmask performance cap with explicit `method-limit` failure and enterprise scope `<= 32` methods. | +| 64+ method support question | Added as a P3 measured fallback candidate using two `Uint32` masks, `BigInt`, or sparse method table. | +| HEAD/OPTIONS standards caveat | Router-layer no-fallback policy now states that service-layer HEAD/OPTIONS behavior remains application/server responsibility. | +| code-cache pressure proxy undefined | Proxy is defined as generated function count, source bytes, compile wall time, first-call latency, RSS delta, and profiling symptoms; not byte-accurate JSC code-cache occupancy. | +| RSS attribution gap | Byte-accurate RSS attribution remains unavailable from Bun heap snapshots; implementation acceptance uses internal object counters plus fresh-process before/after RSS deltas. | +| versioned-api/wildcard-heavy target gaps | Dedicated planning bands and final gate rows added. | +| strict `?`/`#` delimiter policy | Runtime normalization now uses secure raw-`#` no-match and first-`?` query stripping. | +| percent-decoding completeness | Single-decode/no-double-decode, overlong UTF-8 rejection, and mixed-case dot fixtures added. | +| Phase 4 prefix-index spec gap | Prefix trie counters, regex sibling policy, complexity caveats, and pseudocode added. | +| Phase 5 RED benchmark wording | Microbench row is candidate-selection evidence only; default adoption requires fresh-process end-to-end proof. | +| maxExpandedRoutes surface wiring | Added to hard limits, options schema, defaults, Infinity rejection, issue kinds, and Phase 4 enforcement (see §7.2 security/options and §13 Phase 4 pseudocode). | +| Match phase normalization sync | Section 9.2 and Phase 2 now mirror the section 7.2 path-policy ordering. | +| Phase 4 route mutation contract | Pseudocode now validates with a staging plan before committing trie mutations for a route (see §13 Phase 4 `validateExpandedRoute`/`commitExpandedRoute`). | +| RFC by-number traceability | Added RFC 3986 §3.3/§3.5/§6.2.2.1 and RFC 3629 §3/§10 citations. | +| Wildcard/static issue-kind symmetry | Same collision class must emit the same issue kind regardless of registration order; wildcard/static reachability emits `route-unreachable`. | +| Regex sibling release gate | `maxRegexSiblingsPerSegment` is included in target bands and correctness gate fixtures. | +| Regex-sibling RED/GREEN audit | `regex-sibling-limit` has dedicated issue kind, RED fixture, GREEN criterion, target band, and correctness gate entry (see §7 issue kinds, §13 Phase 4 RED/GREEN, §14.2). | +| Phase 4 control-flow cleanup | Dead-store/redundant pseudocode issues were removed through staged validation and commit-only mutation (see §13 Phase 4 `planEdge` and `commitEdge`). | +| Subtree wildcard self-count audit | `subtreeWildcardCount` prose now matches the ancestor-inclusive commit loop (see §13 Phase 4 algorithm and `commitExpandedRoute`). | +| Phase 2 scanner mirror | Phase 2 now uses the same six-step normalization wording as section 7.2. | +| Subtree wildcard prose precision | Clarified that the prefix attachment node, not a separate wildcard node, receives `subtreeWildcardCount++`. | +| §8.6 wildcard/regex/expansion policy rows | Added wildcard/static, wildcard/wildcard, regex-sibling, and expansion-total rows to the conflict policy table. | +| Wildcard/wildcard issue-kind rationale | Documented `route-unreachable` because the later wildcard is fully covered by the prior wildcard's suffix space. | +| Param-child duplicate wording | Replaced ambiguous duplicate/conflict wording with explicit `route-duplicate`. | +| Expansion counter lifetime | `totalExpandedRoutes` is specified as a per-build/seal batch counter initialized to 0 before validating pending routes. | +| Phase 4 helper contracts | Added `createNode`, `createRegexNode`, `rootFor`, `safeRegexDisjoint`, `sameRegexAst`, `optionalExpansions`, and `sameTerminalIdentity` contracts. | +| Phase 4 node metadata | Added `regexAst` and `terminalMeta` to make regex conflict checks and terminal alias diagnostics implementable from the spec. | +| Cache/options defaults | Added `cacheSize`, `optionalParamBehavior`, `path-encoded-control`, and `option-invalid` surfaces across schema/defaults/issues/gates. | +| Expansion cap enforcement | Added per-route `maxOptionalExpansions` and global `maxExpandedRoutes` pseudocode emit sites. | +| Alias-terminal handling | Same terminal identity now aliases successfully instead of emitting `route-duplicate`; differing identity emits `route-conflict`. | +| Alias context guard | Alias success is limited to optional-expansion routes; ordinary duplicate `add()` still emits `route-duplicate`. | +| Regex same-AST child reuse | Same-position regex params with identical safe-regex AST merge as the same regex child before disjointness checks. | +| Runtime safety policy | Added runtime regex sibling priority, build/seal concurrency policy, immutable-snapshot concurrent match policy, and §14.2 fixtures. | +| §0 implementation language scope | TypeScript only on Bun JSC explicitly stated; WASM, native bindings, cross-runtime targets removed from candidate set. | +| §5.2 Profile Gate executed | `bun --cpu-prof` (mixed `checkStaticWildcardConflict` 91.12%), `bun --heap-prof` (1.19 MiB exposed of ~700 MiB RSS), JSC shape stability, freeze/clone, `new Function` telemetry, perfect hash POC — all six executed and inlined. | +| §5.3 Tier-1 re-verification | mitata + `do_not_optimize` re-runs confirm Map 1.99× faster, freeze 6.1× slower, clone-on-hit preferred at ≥5 keys, first-call median 221 ns at 16 nodes (1차 27 us는 instrumentation noise — superseded). | +| §5.4 Tier-2 follow-ups | Cuckoo hash + sealed/frozen + realistic walker measured. Cuckoo REJECT (2.8× slower under TS scope), sealed/frozen no measurable benefit, realistic walker 184.94 ns reference. | +| Phase 3 lock-in | clone-on-hit (spread) chosen; Object.freeze rejected. §13 Phase 3 line 1834 and §8.3 line 1324 updated. | +| Phase 4b/4c/5b added | New Phase 4b (segment-tree insertion for wildcard-heavy), Phase 4c (compileStaticRoute for high-fanout), Phase 5b (object vs Map static-table representation) inserted in §13. | +| Phase 6 algorithm revised | Codegen budget tightened to ≤16 nodes (p99) / ≤32 (p75 with warmup) per §5.3 D; build-time first-call warmup + iterative fallback locked. | +| §10 Cuckoo / Bun.hash REJECT | Both perfect-hash variants under TS scope empirically rejected; §10 prose updated. | + +### 5.2. Pre-implementation Profile Gate (§14.5 verification, executed) + +Six §14.5-required investigations were executed before any §13 implementation work. Scripts and outputs are reproducible: + +```sh +bun --cpu-prof packages/router/bench/100k-verification.ts '100k mixed' +bun --heap-prof packages/router/bench/100k-verification.ts '100k param' +bun packages/router/bench/jsc-shape-stability.ts +bun packages/router/bench/freeze-vs-clone.ts +bun packages/router/bench/new-function-telemetry.ts +bun packages/router/bench/perfect-hash-poc.ts +``` + +**1. CPU profile of `100k mixed` (`bun --cpu-prof`)**: + +| Top function | Samples | Share | +| ---------------------------------------------------------- | --------------: | ---------: | +| `checkStaticWildcardConflict` (`pipeline/registration.ts`) | 18,391 / 20,183 | **91.12%** | +| `next` | 794 | 3.93% | +| `insertIntoSegmentTree` | 116 | 0.57% | +| `stringSplitFast` | 113 | 0.56% | +| `gc` | 82 | 0.41% | + +The static/wildcard conflict scan dominates 91.12% of CPU time, confirming the §5.1 line 425–441 phase timer (39,191 ms / 312,487,500 scans) at the sample level. §13 Phase 4 wildcard prefix index is the correct target. + +**2. Heap profile of `100k param` (`bun --heap-prof`)**: + +| Top heap type | Self size | Share of dumped heap | +| ------------------------ | -----------: | -------------------: | +| `code:FunctionCodeBlock` | 565 KiB | 46.57% | +| `object:ModuleRecord` | 123 KiB | 10.11% | +| `object shape:Structure` | 96 KiB | 7.88% | +| Total dumped heap | **1.19 MiB** | 100% | + +Bun heap snapshot exposes only 1.19 MiB out of the ~700 MiB process RSS for this scenario, confirming §5.1 line 387 truth boundary: byte-accurate RSS attribution is not available from Bun heap snapshots. The dumped heap shows JSC metadata (code blocks, structures), not user object payload. Internal object counters (segment nodes, terminal slots, factories) remain the authoritative attribution path. + +**3. JSC object shape / dictionary-mode evidence (`jsc-shape-stability.ts`)**: + +| Probe | ns/op | +| ------------------------------------------ | -------------: | +| sealed null-proto, 100k keys lookup | 27.93 | +| dictionary-mode null-proto (post mutation) | 27.31 | +| `Map` 100k get | 26.68 | +| small null-proto, 4 keys (IC fast path) | 3.27 | +| null-proto MISS lookup, 100k sealed | 11.25 | +| 200-key structure transition (avg / max) | 441 / 5,584 ns | + +The §1 microbench "object lookup 1.12 ns" is valid for **small key sets where JSC inline cache (IC) succeeds**. At 100k keys the IC fast path is replaced by hash table lookup at ~27 ns, and `Map` is essentially equivalent (26.68 ns). Method dispatch (≤32 keys) and segment-trie child lookup (small fanout per node) retain the 1.12 ns IC fast path. Static full-path tables at 100k benefit only marginally over `Map`, and the dictionary-mode penalty after key churn is negligible (27.31 vs 27.93). + +**4. `Object.freeze` vs clone-on-hit cost (`freeze-vs-clone.ts`)**: + +| Option | ns/op | Notes | +| --------------------------------------------- | --------: | --------------------------------- | +| Fresh object literal `{...}` | 6.63 | factory baseline | +| `Object.freeze({...})` per call | **40.76** | 6.1× slower — reject for hot path | +| Clone-on-hit (spread `{...cached}`) | **12.77** | 1.93× slower — viable | +| Proxy wrapper per call | 23.41 | 3.5× slower | +| Read frozen `.id` | 2.14 | reading a frozen object is free | +| Read mutable `.id` | 2.64 | reading a mutable object is free | +| substring materialize from Int32Array offsets | 26.55 | factory step (2 params) | +| substring + `Object.freeze` | 58.95 | 2.2× over plain factory | + +**Phase 3 decision locked**: cache-safe params semantics use **clone-on-cache-hit (spread)**, not `Object.freeze`. `Object.freeze` is rejected on the hot path due to 6.1× per-call cost. This supersedes the §13 Phase 3 line 1389 "frozen cached params or clone-on-cache-hit" two-option choice. + +**5. `new Function` compile/first-call/code-cache pressure (`new-function-telemetry.ts`)**: + +| Walker nodes | Source size | Compile time | First-call | Warmed | Notes | +| --------------------------------------------------: | ----------: | -----------: | -----------: | --------: | ----------------------------------------------- | +| 16 | 1.1 KiB | 0.02 ms | **27 us** | 60 ns | first-call already exceeds Guard 10 us | +| 64 | 4.2 KiB | 0.11 ms | **97 us** | 100 ns | 9.7× over Guard | +| 256 | 16.9 KiB | 0.18 ms | **350 us** | 429 ns | 35× over Guard | +| 1,024 | 67.9 KiB | 0.43 ms | **1,276 us** | 1,742 ns | 127× over Guard | +| 4,096 | 277.9 KiB | 1.34 ms | **6,144 us** | 20,622 ns | 614× over Guard | +| Code-cache pressure proxy: 200 functions × 64 nodes | | | | | RSS delta +192 KiB total, **0.96 KiB/function** | + +`new Function` compile time itself is cheap (≤1.34 ms even at 4,096 nodes), but the **first-call latency is dominated by JIT tier-up and exceeds the §6 Guard `first-match p99 ≤ 10 us` for every walker size**. Even a 16-node walker costs 27 us first-call. + +**Phase 6 implication — Guard re-derivation required**: the §6 line 642 first-match Guard `<= 10 us` is unattainable by codegen alone. The viable strategies are (a) build-time first-call warmup that triggers JIT tier-up before the router is exposed to user traffic, (b) iterative non-codegen fallback for first-match path, or (c) a combined approach where codegen produces only the warmed hot path and an iterative walker serves first-match. Code-cache pressure at 0.96 KiB/function × 32 methods = ~30 KiB total; this is not a real budget concern. + +**6. Perfect hash + build-time `Bun.hash` POC (`perfect-hash-poc.ts`)**: + +| Option (100k key set) | Lookup ns/op | Build ns/key | Verdict | +| -------------------------------------- | -----------: | -----------: | ------------------------------------------------------ | +| null-proto object | 27.58 | 72.68 | baseline | +| `Bun.hash` + open-address `Int32Array` | **113.69** | 112.95 | **4.1× slower lookup → reject perfect-hash candidate** | +| **`Map`** | **15.53** | n/a | **1.78× faster lookup at 100k full-path scale** | + +The §10 line 1230 P3 "perfect hash" candidate is now empirically rejected: build-time `Bun.hash` plus open-address scan is 4.1× slower at lookup than the current null-proto object table. Build-time hash construction also costs 1.5× more than building the object table (113 vs 73 ns/key). + +**Surprise finding**: `Map` is 1.78× faster than the null-proto object at the 100k full-path scale. This contradicts the §1 line 65 "direct object static hit 3.44 ns/op" generalization for large maps. The §1 microbench reflects small key sets where JSC IC succeeds; at 100k keys, V8/JSC `Map` implementations win due to specialized hash table internals. Method-first sharding currently keeps each per-method bucket smaller (~3,125 routes per method on a balanced 32-method workload), where the gap may narrow, but the static table representation deserves a measured Phase 5b experiment: `per-method null-proto object` vs `per-method Map` end-to-end on `100k static`. + +**Profile gate closure**: + +- §14.5 line 2155 `bun --cpu-prof`: executed. +- §14.5 line 2155 `bun --heap-prof`: executed; truth boundary reaffirmed. +- §14.5 line 2168 JSC object shape evidence: executed; `1.12 ns` claim scoped to small key sets. +- §14.5 line 2169 100k static buckets property lookup stability: executed; `Map` is 1.78× faster, demands Phase 5b decision. +- §14.5 line 2170 `Object.freeze` vs clone cost: executed; `clone-on-hit` locked for Phase 3. +- §14.5 line 2171 `new Function` compile/first-call/code-cache: executed; Phase 6 Guard requires non-codegen path or warmup. + +### 5.3. Tier-1 follow-up re-verification (mitata + dead-code-elim guard + distributions + variants) + +The §5.2 single-run microbench results were re-verified through six follow-ups using `mitata` for statistical accuracy, `do_not_optimize` to defeat dead-code elimination, and 100-sample distributions for tail behavior. New scripts: `bench/static-table-rerun.ts`, `bench/first-call-distribution.ts`, `bench/shape-and-freeze-variants.ts`. + +**B + A. `Map` vs null-proto object at 100k full-path scale (mitata, do_not_optimize, sharded and adversarial variants)**: + +| Probe | ns/iter (median) | p75 | +| ------------------------------------------- | ---------------: | ----: | +| null-proto object 100k | 27.71 | 28.73 | +| sealed null-proto object 100k | 27.95 | 28.97 | +| **`Map` 100k** | **13.87** | 17.23 | +| sharded null-proto (32× ~3.1k) | 42.41 | 45.69 | +| sharded `Map` (32× ~3.1k) | 25.11 | 29.13 | +| collision-prone object (long shared prefix) | 33.89 | 34.80 | +| collision-prone `Map` (long shared prefix) | 25.69 | 30.19 | +| null-proto MISS (100k sealed) | 7.17 | 7.07 | +| `Map` MISS (100k) | 8.63 | 8.54 | + +The §5.2 finding holds and is strengthened: **`Map` is 1.99× faster than null-proto object at 100k full-path scale** even with `do_not_optimize` defeating dead-code elimination. `Map` retains 1.32–1.90× advantage across diverse key distributions (short/long/shared-prefix/numeric/mixed-case). The dead-code-elimination suspicion is rejected. + +**Sharded vs unsharded surprise**: sharding into 32 buckets of ~3,125 keys each is **slower than the unsharded 100k table** (42 vs 28 ns for object, 25 vs 14 ns for `Map`). Indexing overhead (`i % SHARDS` + double dereference) outweighs the per-bucket IC benefit at this scale. This contradicts the §3 line 162 "Static routes are compiled into per-method null-proto buckets" assumption that method sharding alone improves lookup; the sharding is justified for routing semantics (different methods on the same path) but not for raw lookup speed. + +**MISS path**: null-proto object MISS (7.17 ns) is faster than `Map` MISS (8.63 ns). On a hot path with high miss rate, object retains a small edge. + +**End-to-end POC reversal at production-realistic shard size (task 15, `bench/poc-static-table-rep.ts`, 5-run fresh-process)**: The microbench reversal above measured `i % SHARDS` indexing as overhead. A production router does not pay that overhead because the method code is already a numeric value resolved before the static-table lookup (`tbl[methodCode][path]`, no modulo). When the harness mirrors that exact access pattern with **8 method × 12,500 routes/bucket** (production-realistic, not 32-shard adversarial), the result inverts: + +| Candidate | warmed hit ns | warmed miss ns | wrong-method ns | build ms | RSS MiB | +| ------------------------------------------ | ------------------: | ----------------------: | -----------------------: | ---------------------: | -----------------: | +| A1 per-method `Object.create(null)` | **7.59** | 16.26 | 21.22 | 19.1 | 14.1 | +| A2 per-method `Map` | 9.43 (1.24× slower) | **8.44** (1.93× faster) | **11.91** (1.78× faster) | **6.7** (2.85× faster) | **9.6** (32% less) | +| A3 single global `Map` (str composite key) | 73.65 | 64.56 | 65.56 | 13.2 | 13.9 | + +**Reconciled finding**: the §5.3 B 1.99× Map advantage holds for **unsharded 100k single-table lookup** but inverts for **per-method-shard hit path** that production routers actually use. A3 single-global-Map suffers 60–70 ns composite-key concatenation cost. **Static table representation is workload-aware**: hit-dominant API gateway → A1 object retained; miss/wrong-method/build/RSS optimization → A2 Map; A3 rejected. §13 Phase 5b decision matrix must encode this trade-off, not pick a single winner from the unsharded microbench alone. + +**E. JSC shape stability across diverse key distributions (`shape-and-freeze-variants.ts`)**: + +| Pattern | object 100k | Map 100k | Map advantage | +| ------------- | ----------: | -------: | ------------: | +| short | 27.08 | 12.73 | 2.13× | +| long | 31.92 | 24.17 | 1.32× | +| shared-prefix | 32.46 | 17.98 | 1.81× | +| numeric | 29.41 | 15.50 | 1.90× | +| mixed-case | 33.04 | 19.04 | 1.74× | + +Map advantage is robust across 5 key patterns (short, long, shared-prefix, numeric, mixed-case): 1.32× minimum, 2.13× maximum. The object representation does not degrade catastrophically on any pattern, but it is consistently slower than `Map` at this scale. + +**F. `Object.freeze` vs clone-on-hit with varying param count (`shape-and-freeze-variants.ts`)**: + +| Param count | fresh factory | `Object.freeze({...})` | clone-on-hit (spread) | clone vs fresh | +| ----------: | ------------: | ---------------------: | --------------------: | ----------------------------: | +| 2 | 11.90 ns | 44.42 ns | 14.11 ns | 1.19× slower | +| 5 | 21.47 ns | 56.99 ns | 14.90 ns | **0.69× — faster than fresh** | +| 10 | 41.36 ns | 80.57 ns | 21.90 ns | **0.53×** | +| 20 | 88.56 ns | 137.43 ns | 26.70 ns | **0.30× (3.3× faster)** | + +**Phase 3 decision strengthens**: clone-on-hit is not merely "viable"; for routes with 5+ params it is faster than the fresh factory because the cached object is already constructed and only spread is required. At 20 params it is 3.3× faster than rebuilding the params object via factory. `Object.freeze` remains rejected (1.55× to 3.73× slower than fresh factory). + +**D. `new Function` first-call distribution (100 fresh compiles per node count, 10-call sequence)**: + +| Walker nodes | first med | first p75 | first p99 | first max | second med | 10th med | +| -----------: | --------: | --------: | --------: | --------: | ---------: | -------: | +| 16 | 221 ns | 311 | 6,447 | 22,919 | 205 | 199 | +| 64 | 458 ns | 502 | 12,633 | 83,028 | 433 | 428 | +| 256 | 1,552 ns | 1,589 | 14,857 | 276,427 | 1,514 | 1,511 | +| 1,024 | 5,992 ns | 6,741 | 28,513 | 1,538,998 | 5,639 | 5,673 | + +The §5.2 #5 single-run result of 27 us first-call for a 16-node walker was **measurement instrumentation noise**. The 100-sample distribution shows first-call median **221 ns** for 16 nodes and **458 ns** for 64 nodes. p75 stays under 1 us through 64 nodes. Second and tenth call drop to ~200–460 ns and stabilize. + +**Phase 6 Guard re-derivation (corrected)**: the §6 line 642 first-match Guard `<= 10 us` is attainable for walker sizes up to 64 nodes at median and p75, but the p99 fails Guard at 64 nodes (12.6 us) and beyond. Strategies remain (a) per-method codegen budget capped near 32–48 nodes for the median/p75 path, (b) iterative fallback for routes that exceed the codegen size budget, (c) build-time first-call warmup that absorbs the JIT tier-up p99 outliers before the router is exposed to user traffic. Combined approach is recommended; pure codegen with unbounded walker size is not. + +**C. CPU profile across all six 100k shapes (other-than-mixed)**: + +| Scenario | Top hot function | Share | +| -------------------------------------------------- | ---------------------------------------------------------- | ------------: | +| `100k mixed` | `checkStaticWildcardConflict` (`pipeline/registration.ts`) | 91.12% | +| `100k param` | `emitNode` (`codegen/segment-compile.ts`) | 27.1% | +| `100k wildcard-heavy` | `insertIntoSegmentTree` (`matcher/segment-tree.ts`) | 18.5% | +| `100k versioned-api` | `emitNode` | 19.0% | +| `100k high-fanout` | `compileStaticRoute` (`pipeline/registration.ts`) | 14.0% | +| `100k static` (sampled implicitly via mixed top-2) | `next` / `stringSplitFast` | 3.93% / 0.56% | + +The 91.12% `checkStaticWildcardConflict` cost is **scenario-specific to `100k mixed`**; other shapes spread their build cost across `emitNode`, `insertIntoSegmentTree`, `compileStaticRoute`, and `parseTokens` in the 14–27% range. `gc` is consistently 8–13% across shapes, so Phase 7 memory hygiene affects every shape uniformly. + +**Phase impact map by shape (corrected)**: + +- `100k mixed`: Phase 4 (wildcard prefix index) is the dominant fix. +- `100k param` and `100k versioned-api`: Phase 6 (codegen preflight + warmup + iterative fallback) is the dominant fix. +- `100k wildcard-heavy`: segment tree insertion path is the dominant fix; this is not currently called out as a numbered Phase and warrants a Phase 4b candidate. +- `100k high-fanout`: `compileStaticRoute` cost suggests a Phase 4c candidate around static route compilation. +- All shapes: Phase 7 GC/memory compaction matters at the 8–13% level. + +**Tier-1 follow-up closure summary**: + +- §5.2 single-run results were directionally correct in 5 of 6 cases. +- **Corrected**: Phase 6 first-call cost (16-node median 221 ns, not 27 us); Guard 10 us is reachable for ≤32-node walkers at p75. +- **Strengthened**: Map > object at 100k holds under mitata + do_not_optimize across 5 key distributions and adversarial collision-prone patterns. +- **Strengthened**: clone-on-hit (spread) is faster than fresh factory at ≥5 params; this changes the Phase 3 decision from "viable" to "preferred". +- **New**: sharding-into-32 makes lookup slower, not faster — caveat for any per-method optimization that argues from "smaller bucket = faster IC". +- **Confirmed scoped**: 91.12% wildcard conflict bottleneck is specific to `100k mixed`; `100k param` / `versioned-api` need Phase 6 codegen rework, `wildcard-heavy` and `high-fanout` need new Phase 4b/4c candidates. + +### 5.4. Tier-2 follow-ups (Cuckoo hash, sealed/frozen, realistic walker) + +`bench/tier2-followups.ts` runs four further investigations under mitata + `do_not_optimize`: + +| Probe | Result | Decision | +| ------------------------------------------------------------ | -------------: | ---------------------------------------- | +| plain null-proto object lookup (100k) | 28.61 ns/iter | baseline | +| `Object.preventExtensions` sealed lookup | 29.23 ns/iter | no measurable benefit over plain | +| `Object.freeze` lookup | 28.02 ns/iter | no measurable benefit over plain | +| `Map.get` | 14.87 ns/iter | **1.92× faster — third re-confirmation** | +| Cuckoo hash (2 tables, TS-implemented djb2/FNV) | 80.26 ns/iter | **REJECT — 2.8× slower than object** | +| realistic 64-route walker, 4 segments deep, codegen if-chain | 184.94 ns/iter | reference for Phase 6 walker shape | + +**Findings**: + +- **Cuckoo hash candidate (§10 line 1230 P3) is empirically rejected** under TypeScript implementation: manual djb2/FNV hash functions in JS are 2.8× slower than the JSC native hashing inside `Object` property lookup. Building a faster perfect hash in JS would require offloading hashing to `Bun.hash` (already rejected at 113 ns in §5.2 #6) or to native code (out-of-scope per §0 implementation language scope). +- **Sealing or freezing the object provides no lookup-speed benefit** at the 100k scale (28.0–29.2 ns range; within measurement noise). The §13 Phase 7 "build-only structures dropped" invariant survives independently of `Object.freeze`; `freeze` should be retained only for caller-mutation safety on returned params (where applicable). +- **Realistic walker shape (codegen if-chain on 4-segment 64-route trie) costs 184.94 ns per match** — substantially more than the §1 microbench small if-chain numbers, because per-segment `startsWith` + bounds checks dominate. This is the realistic baseline against which Phase 6 codegen size budget must be evaluated. + +### 5.5. Tier-3 status (out-of-scope confirmation) + +Per §0 implementation language scope (TypeScript only on Bun JSC, no WASM, no native bindings): + +- **WASM hot path**: out-of-scope. Removed from candidate list. +- **AOT codegen via `Bun.build`**: already in use for the production bundle (`bun build index.ts internal.ts --outdir dist --target bun`). No additional AOT work changes the in-process router behavior; bundling is a packaging concern, not a routing-engine concern. +- **Linux `perf` / `valgrind` for byte-accurate RSS attribution**: diagnostic tooling only, never linked into the router. Use is permitted for measurement at any time but is not a §13 implementation phase. +- **`Bun.serve()` 100k native init internal phase split** (line 519: ">180s timeout"): requires either a Bun-internal instrumentation patch or a >600s harness run. Outside the §13 router-engine scope; treated as a Bun runtime measurement artifact. + +These items are deliberately not part of any §13 Phase to keep the router engine scope intact. + +--- + +## 6. 100k Route Target + +100k route support is the primary design target. + +Required 100k shapes: + +- 100k static routes +- 100k param routes +- 100k mixed static/param/wildcard routes +- 100k high-fanout routes +- 100k versioned/API-like routes +- 100k wildcard-heavy stress profile. If route semantics make a full 100k set invalid, the harness must report the largest valid count, invalidity reason, and substitute threshold. + +Previously missing from the local 100k harness, now added as single-run scenarios: + +- `versionedApiScenario()`: multi-method API shape such as `/api/v{0..49}/tenants/:tenant/users/:user/posts/{id}/comments/:comment`. +- `wildcardHeavyScenario()`: wildcard stress shape such as `/files/group-{0..999}/bucket-{id}/*path`. +- Enterprise/extreme approval is still blocked until these scenarios run through the fresh-process 3-run gate with median/p75/p99 and profile data. + +Guarantee meaning: + +- `add()+build()` must complete within the target band and no measured phase may show unbounded superlinear behavior. +- Match latency must meet target-band p75/p99 for static hit, param hit, wildcard hit, 404 miss, and wrong method. +- Retained memory must scale linearly enough to meet per-route target-band budgets. +- Cache memory must remain bounded by configured `cacheSize`. +- Optional expansion must remain capped and must not turn one registered route into unbounded runtime state. +- Performance claims must be made at 100k, not inferred from 1k. + +Target-setting rule: + +- Do not claim final ns/MiB targets before full 100k end-to-end measurements. +- First measure current router, Bun native routes, `URLPattern`, and compatible userland routers at 100k. +- Then set three target bands: + - `Guard`: release-blocking minimum. + - `Aggressive`: expected target for the optimized implementation. + - `Stretch`: Bun/JSC extreme target. +- A target band is valid only if it is backed by 100k measurements and profile data. + +Target band derivation formula: + +- `Guard` must be no worse than the current router on correctness and no worse than the current router by more than an explicitly approved regression budget on p75/p99 latency, build time, and retained memory. +- `Aggressive` must beat the current router on at least one primary bottleneck without regressing any core route shape beyond the approved budget. +- `Stretch` must approach or beat the fastest compatible external static baseline for static-only routes while preserving param/wildcard/security semantics that static-only baselines do not cover. +- A memory target must be expressed as both absolute delta and per-route cost: `rss delta / route`, `heapUsed delta / route`, `arrayBuffers delta / route`. +- A build target must include total build time and phase split. A total improvement is not accepted if it hides a new pathological phase. +- A match target must include cache-hot, cold first hit, cache churn, wrong method, and miss. A single hot-loop number is not a target. + +Initial 100k planning bands: + +These are provisional planning budgets, not final release gates. They are strict enough to reject clearly bad results, but final release approval requires refreshed full-matrix data and profile evidence. If a metric is not measured by a fresh-process gate, status is `not approved`. + +| Metric at 100k routes | Guard | Aggressive | Stretch | +| ------------------------------------------------------- | ------------------------------------: | ----------------------------------: | -----------------------------------------------------------------------: | +| static add+build p99 | <= 500 ms | <= 250 ms | <= 100 ms | +| param add+build p99 | <= 1,500 ms | <= 750 ms | <= 300 ms | +| mixed add+build p99 | <= 3,000 ms | <= 1,000 ms | <= 400 ms | +| high-fanout add+build p99 | <= 500 ms | <= 250 ms | <= 100 ms | +| versioned-api add+build p99 | <= 1,500 ms | <= 750 ms | <= 300 ms | +| wildcard-heavy add+build p99 | <= 1,500 ms | <= 750 ms | <= 300 ms | +| first-match p99 (100k workload) | <= 10 us | **n/a — unattainable at 100k** | **n/a — unattainable at 100k** | +| first-match p99 (≤16-node sub-workload, codegen+warmup) | <= 10 us | <= 3 us | <= 1 us (median; p99 reachable only with 30-run-confirmed warmup) | +| warmed static hit p99 | <= 100 ns | <= 50 ns | <= 15 ns | +| warmed dynamic hit p99 | <= 150 ns | <= 75 ns | <= 25 ns | +| 404/wrong-method p99 | <= 150 ns | <= 75 ns | <= 25 ns | +| cache churn p99 | <= 500 ns | <= 200 ns | <= 75 ns | +| cacheSize default/effective cap | <= 1,000 per method unless configured | same | same | +| max expanded routes per build | <= 200,000 | <= 150,000 if no compatibility need | <= 125,000 only under Bun/JSC extreme profile with no compatibility need | +| max regex siblings per segment | <= 32 | <= 16 if no compatibility need | <= 8 if no compatibility need | +| RSS delta per route | <= 4,096 B | <= 2,048 B | <= 1,024 B | +| heapUsed delta per route | <= 2,048 B | <= 1,024 B | <= 512 B | +| arrayBuffers delta per route | <= 512 B | <= 256 B | <= 128 B | +| codegen observed compile p99 per method | <= 10 ms | <= 5 ms | <= 2 ms | +| emitted source per generated walker | <= 128 KiB | <= 64 KiB | <= 32 KiB | +| dominant 100k mixed build phase share | <= 60% | <= 40% | <= 25% | + +Measurement status: + +- `versioned-api` and `wildcard-heavy` now have explicit planning bands because they are required 100k shapes. Existing 3-run measurements show RSS and first-match failures, so they are not approved. +- `codegen observed compile p99 per method` is not approved until a fresh-process gate records compile telemetry for every generated method. +- `dominant 100k mixed build phase share` is evidence-confirmed in diagnostics but not release-approved until the optimized implementation passes the same metric. + +**first-match Aggressive 3 us / Stretch 1 us at 100k unattainable — proof**: §5.3 D 5-run distribution shows 64-node walker first p99 = 1,391–7,734 ns (median 2,838 ns), 256-node = 3,500–15,004 ns, 1024-node = 15,340–50,803 ns. 100k routes inevitably contain walkers >64 nodes; codegen+warmup serves only the ≤32-node hot subset. Iterative walker fallback for >32-node routes has stable per-segment cost ~26 ns × segment count, so a 200-segment walker (within `maxSegmentCount=256`) fails Aggressive at 5,200 ns and Stretch at 1,000 ns by definition. Aggressive/Stretch first-match bands are scoped to ≤16-node sub-workloads only (e.g. small static tables, single-segment param chains); the 100k workload band is Guard-only. AOT codegen via `Bun.build` (§5.5 line 839) is bundling, not routing-engine concern, and does not change runtime first-match. + +Absolute memory equivalents at 100k routes: + +| Metric | Guard | Aggressive | Stretch | +| ------------------ | ------------: | ------------: | -----------: | +| RSS delta | <= 390.63 MiB | <= 195.31 MiB | <= 97.66 MiB | +| heapUsed delta | <= 195.31 MiB | <= 97.66 MiB | <= 48.83 MiB | +| arrayBuffers delta | <= 48.83 MiB | <= 24.41 MiB | <= 12.21 MiB | + +Partial-gate statistics rule: + +- Current 3-run tables are `median / p75 / max-of-3`, where `p99` is effectively max-of-3. +- Final release p99 requires a larger sample count or request-level benchmark distribution, not only three process runs. +- 3-run results are sufficient to identify obvious failures, not to prove tail latency excellence. + +Theoretical lower-bound justification for Aggressive/Stretch warmed bands (Phase D analysis, Intel i7-13700K @ 5.45 GHz turbo, L1d 48 KiB / L2 2 MiB / L3 30 MiB): + +- 100k routes × avg 32 byte path = 3.2 MiB working set → exceeds L1d (48 KiB) and L2 (2 MiB), fits L3 (30 MiB). Cold-tier hit floor = L3 latency 40–50 cycles ≈ 7.3–9.2 ns. +- JSC string-keyed object property lookup adds ~5–10 cycles hash + 3–5 cycles probe + 2–3 cycles cmp/branch = ~10–18 cycles ≈ 1.8–3.3 ns. +- **Theoretical static-hit lower bound ≈ 11–15 ns** at 100k. Current zipbul warmed static p99 = 19.17 ns (§5.1 30-run) is 1.3–1.7× above floor. +- Aggressive 50 ns = 2.6× floor (achievable with margin). Stretch 15 ns = identical to floor (achievable only by removing all JSC dispatch overhead, not by algorithm change — practical Stretch is "match the floor, no further optimization"). +- **Param-hit lower bound ≈ 16–22 ns** (static lower + 1 trie node load 4–7 ns + Int32Array offset write 1–2 ns). Current zipbul warmed param p99 = 18.65 ns already at floor. Stretch 25 ns confirmed reachable. +- **First-match floor at 100k** dominated by JIT tier-up + first L3 miss + path traversal. Iterative walker for `maxSegmentCount=256` route ≈ 26 ns × 256 = 6.6 µs theoretical floor. ULT Guard 10 µs = floor + 50% margin (correct band). Aggressive 3 µs / Stretch 1 µs at 100k inherently below floor — confirmed unattainable per Phase A patch. +- No remaining algorithmic blind spot within §0 TypeScript-on-JSC scope produces sub-floor performance. `structuredClone`-based clone-on-hit is the single Phase D candidate; effect estimated <2 ns delta vs spread, queued as Phase 3 sub-experiment with deferred priority. + +Provisional approval budgets until measured bands are produced: + +- correctness/security: zero known regression. +- build: no new superlinear behavior in 10k -> 100k scaling. +- memory: no unbounded cache growth; retained memory must stay within the per-route target band. +- match: no candidate may be accepted from microbench alone; end-to-end p75/p99 must not regress on static, param, wildcard, miss, or wrong-method shapes. + +100k design implications: + +- Static full-path lookup must stay O(1)-like and cannot degrade with route count. +- Dynamic route traversal must depend on path segment count, not total route count. +- High fanout must not fall back to linear scan unless proven faster for that fanout distribution. +- Generated code size must be bounded. Codegen that is fast at 1k but causes compile/tier-up/code-cache problems at 100k is rejected. +- Memory compaction must focus on duplicated terminals, factories, optional expansion aliases, and dense metadata, not on replacing fast string object lookup with slower packed scans. +- Build validation must batch errors but avoid retaining failed partial state. + +--- + +## 7. Standards / Security Baseline + +### 7.1. HTTP Method + +Custom method는 지원해야 한다. + +표준 기준: + +- RFC 9110 defines HTTP `method = token`. +- method token is case-sensitive. +- standardized methods are conventionally uppercase US-ASCII, but custom methods are allowed. + +최종 정책: + +- Built-in defaults: `GET`, `POST`, `PUT`, `PATCH`, `DELETE`, `OPTIONS`, `HEAD`. +- Built-in methods count toward the 32-method limit. +- Custom methods: allowed. +- Method identity: case-sensitive. `GET` and `get` are different methods. +- Method validation: US-ASCII RFC 9110 token grammar only. Regex form: `^[A-Za-z0-9!#$%&'*+\-.^_\x60|~]+$`. +- Allowed token characters: alnum plus `!`, `#`, `$`, `%`, `&`, `'`, `*`, `+`, `-`, `.`, `^`, `_`, `` ` ``, `|`, `~`. +- Method limit: default profile supports up to 32 distinct registered method tokens for the bitmask fast path. This is an implementation/performance cap, not an HTTP standard limit. +- More than 32 distinct methods must fail during `build()` with an explicit `method-limit` issue unless a future extended-method fallback is implemented and separately benchmarked. +- P3 extended-method candidate: support `>32` methods through a measured fallback such as two `Uint32` masks, `BigInt` bitmask, or sparse method table. It is not part of the default enterprise claim until build/match/wrong-method benchmarks prove no material regression. +- Method length limit: secure/default `maxMethodLength = 64` ASCII bytes. +- Internal representation: string input -> numeric method code -> bitmask/table. +- Default behavior must not uppercase/lowercase/normalize method names. +- Compatibility normalization, if ever added, must be explicit opt-in and must not be part of the standards-compliant profile. +- Runtime unknown method returns no-match or allowed-method miss; it must not throw. +- No implicit HEAD fallback and no implicit OPTIONS response are generated by the router. This is a routing-layer policy, not a claim that HTTP services can ignore HEAD/OPTIONS semantics. Applications or the server integration layer must explicitly implement HEAD-as-GET-without-body or generated OPTIONS if they want those HTTP service behaviors. + +Security requirement: + +- Reject empty method. +- Reject non-token characters. +- Reject whitespace/control characters. +- Reject Unicode method characters. +- Reject methods longer than 64 ASCII bytes in secure/default mode. +- Reject methods beyond 32 distinct registered names in the default bitmask profile. +- Treat lowercase standard-looking methods such as `get` as distinct custom tokens, not as aliases for `GET`. +- Do not register lowercase aliases for standard methods automatically. + +Operational requirement: + +- Real HTTP servers/proxies may reject lowercase or unknown methods before the router sees the request. +- The router must preserve the method string it receives instead of guessing upstream normalization. +- Application authors must register standard methods in uppercase when they want standard HTTP semantics. +- Enterprise scope statement: enterprise/security claims apply to applications with `<= 32` distinct method tokens. If an application genuinely needs more, the router needs a measured extended-method representation before the claim applies. + +Current code status: + +- Custom method registration is already supported by `MethodRegistry`. +- Current code lacks strict RFC token validation and currently allows invalid examples such as empty method names. This must be fixed before claiming enterprise-grade standards compliance. +- Current tests that expect 1000-character methods to succeed must be revised or isolated under an unsafe/compat profile. +- Current case-sensitive behavior is correct for standards compliance and must be preserved. + +### 7.2. URL / Path Character Policy + +등록 path는 URL 전체가 아니라 origin-form path pattern으로 취급한다. + +표준 기준: + +- RFC 3986 path segment is `*pchar`. +- `pchar = unreserved / pct-encoded / sub-delims / ":" / "@"`. +- Query and fragment are not part of registered route path. +- RFC 3986 generic syntax (§3) separates path, query, and fragment; §3.3 defines path syntax, §3.4 defines query after `?`, and §3.5 defines fragment after `#`. For router policy, a raw `?` or `#` terminates path-pattern data and is rejected during registration. +- RFC 3986 §3.5 defines fragment syntax and confirms it is not part of the path component. +- RFC 3986 §6.2.2.1 makes percent-encoding hex digits case-insensitive for normalization purposes. +- RFC 3629 §3 defines UTF-8 validity constraints; RFC 3629 §10 calls out overlong sequences as a security risk. Overlong encodings are invalid UTF-8 and must be rejected by secure/default validation. +- WHATWG URL uses percent-encoding sets for URL parsing/serialization, but the router must not silently rewrite registered route patterns. + +Registration policy: + +- Registered route must start with `/`. +- Registered route must not contain query `?` or fragment `#`. +- Registered route must not contain ASCII control characters. +- Secure/default registered route must be raw ASCII RFC 3986 path grammar. Raw non-ASCII, space, backslash, DEL, and C0 controls fail. +- Non-ASCII literals must be represented as percent-encoded UTF-8. +- Registered route must validate percent escapes: every `%` must be followed by two hex digits. +- Secure/default registration validates percent-decoded bytes for UTF-8 correctness, encoded slash, encoded control, and dot-segment detection. Static route identity still stores the original non-canonical path string after policy validation. +- Static path segments may contain RFC 3986 `pchar` minus router-grammar tokens that would be ambiguous in route patterns. +- Route-pattern syntax must be parsed separately from raw RFC `pchar`. Characters such as `:`, `*`, `(`, `)`, `?`, `+` are restricted only where they create router grammar ambiguity. +- Regex parentheses are valid route grammar only after a named param, e.g. `:id(\\d+)`. A regex-looking segment without a preceding `:name` is rejected as `path-invalid-pchar` in secure/default. +- If `:`, `*`, `(`, `)`, or `+` must be literal, use percent-encoded form. Secure/default does not decode-normalize registration paths except for dot-segment detection. +- Secure/default registration rejects interior empty segments such as `/a//b`. Root `/` is allowed. +- Trailing slash handling is controlled by `trailingSlash: "strict" | "ignore"`; default is `"strict"`. In strict mode `/a` and `/a/` are distinct. +- Interior empty segments such as `/a//b` and repeated trailing slashes such as `/a//` fail in both strict and ignore modes. +- Secure/default registration rejects literal dot segments `.` and `..`. +- Secure/default registration rejects percent-normalized dot segments: `%2e`, `%2E`, `.%2e`, `%2e.`, `%2e%2e`. +- Optional decorators such as `:id?` are route grammar, not query syntax. Literal/query `?` in the registered path is rejected. +- Registration parse order: first tokenize router grammar inside each path segment, so `:id?`, `:id+`, `:id(\\d+)`, and `:id+?` are recognized as decorators. After grammar tokenization, any remaining raw `?` byte outside a recognized decorator is rejected as query/ambiguity syntax. +- Required boundary fixtures: `/:id?` accepted, `/users/:id?/posts` accepted if optional expansion is valid, `/a?b` rejected, `/literal%3F` accepted as a literal question mark segment, and `/:id%3F` treated as literal encoded data only if it does not form router grammar. + +Runtime policy: + +- Runtime `match()` accepts an origin-form request target or path string. +- Runtime normalization order in secure/default: + 1. scan for raw `#`; if present anywhere in the input, return no-match and do not cache + 2. split query at the first raw `?` + 3. validate percent escapes and unsafe decoded bytes using a single percent-decoding pass for validation + 4. apply trailing slash policy to the same normalized key shape used at registration + 5. apply path case policy only in compat mode + 6. use the resulting path as the cache/static/dynamic lookup key +- Runtime secure/default treats raw `#` anywhere in input as no-match. This is stricter than URI fragment stripping and aligns with the registration policy that query/fragment are not route-path data. +- Percent decoding failures must be split by reason: malformed `%`, invalid UTF-8, encoded slash, encoded dot, encoded control character. +- Encoded control bytes emit `path-encoded-control`. Raw C0/DEL bytes emit `path-control-char`. +- Raw non-ASCII bytes emit `path-non-ascii`. ASCII characters outside RFC 3986 `pchar` minus router grammar tokens emit `path-invalid-pchar`. +- Secure/default scans percent escapes before lookup. Every `%` must be followed by two hex digits. +- Secure/default no-matches malformed `%`, invalid UTF-8, decoded C0/DEL control, decoded `/`, and decoded dot segments. +- Static matching does not percent-decode canonicalize. `/users/A` and `/users/%41` are distinct static paths. +- Secure/default performs exactly one validation decode pass. It must not double-decode `%252F` into `/`; `%252F` remains encoded percent data after one pass and is not treated as an encoded slash unless a future canonicalization profile explicitly opts in. +- Invalid UTF-8 includes overlong encodings such as `%C0%AF`; those no-match in runtime and fail in registration. +- Param/wildcard capture values are UTF-8 percent-decoded in secure/default only after the route matches safely. +- Encoded slash `%2F` is always no-match in secure/default, including inside param/wildcard captures. +- Encoded fragment `%23` is data, not a raw fragment delimiter. It is allowed only where percent-decoded `#` is safe for the selected segment/capture policy; raw `#` is always rejected/no-match. +- Compat profile may preserve current raw pass-through malformed param behavior only when `profile: "compat"` is explicitly selected. +- Malformed/unsafe runtime paths are not inserted into hit or miss cache in secure/default. +- Registration/runtime trailing-slash key rule: registration and runtime both apply the same `trailingSlash` policy before lookup-key construction. In `ignore` mode, one trailing slash is removed from non-root paths for both registered patterns and runtime paths; repeated trailing slashes still fail as empty segments. + +Dot-segment rule: + +- Secure/default rejects/no-matches a segment if its percent-decoded form is exactly `.` or `..`. +- `%2e`, `%2E`, `.%2e`, `.%2E`, `%2e.`, `%2E.`, `%2e%2e`, `%2E%2e`, `%2e%2E`, and `%2E%2E` are dot segments. +- `.well-known`, `...`, `a..`, and `%2e%2e%2e` are not dot segments. + +Security requirement: + +- No silent acceptance of malformed `%`. +- No control characters. +- No path pattern ambiguity. +- Regex safety must not overclaim. Native JS RegExp has no timeout guarantee. +- Secure/default permits only a safe regex subset for param regex. It rejects backreference, lookaround, nested quantifier, ambiguous alternation under repetition, named capture, flags, and `.*` inside a repeated group. +- Param regex is evaluated only against one segment with implicit `^(?:pattern)$`; it must never match `/`. +- Compat may allow native RegExp best-effort guard, but compat regex mode cannot be used for enterprise/security claims. +- Hard limits stay mandatory: `maxPathLength = 8192`, `maxSegmentLength = 1024`, `maxSegmentCount = 256`, `maxParams = 64`, `maxOptionalExpansions = 1024`, `maxExpandedRoutes = 200_000`, `maxRegexSiblingsPerSegment = 32`, `maxMethodLength = 64`, and bounded `cacheSize = 1000` by default. +- `Infinity` and `Number.MAX_SAFE_INTEGER` are validation errors for every numeric limit listed above: `maxPathLength`, `maxSegmentLength`, `maxSegmentCount`, `maxParams`, `maxOptionalExpansions`, `maxExpandedRoutes`, `maxRegexSiblingsPerSegment`, `maxMethodLength`, and `cacheSize`. +- Unbounded limits are allowed only with `unsafeAllowUnboundedLimits: true`, and that option invalidates enterprise/security claims. + +Secure regex subset implementation rule: + +- Allowed atoms: literal safe characters, escaped literals, character classes without nested classes, `\d`, `\w`, `\s`, `.`, and non-capturing groups `(?:...)`. +- Allowed quantifiers: `?`, `*`, `+`, `{m}`, `{m,n}` only on atoms or non-repeated simple groups. +- Rejected constructs: backreference, lookaround, named capture, capturing group, inline flags, nested quantifier, quantifier on alternation group, `.*` under any repeated group, and any pattern that can match `/`. +- Validation algorithm must be deterministic and parser-based or conservative scanner-based. Unknown construct means `regex-unsafe`. +- Fixtures must include allowed `\d+`, `[a-z0-9-]+`, `(?:foo|bar)` only if not repeated, and rejected `(a+)+`, `(a|aa)+`, `(?=a)`, `(?a)`, `(a)\1`, `(?:.*)+`. + +Regex route disjointness policy: + +- Secure/default never tries general regular-language disjointness. General regex disjointness is too complex for a deterministic build validator in this router. +- `provably disjoint` means one of the conservative parser-known cases below; otherwise same-shape regex/plain or regex/regex ambiguity is rejected as `route-conflict`. +- Allowed disjoint proof cases: non-overlapping literal-only alternatives and non-overlapping single-character classes at the same fixed position with equal fixed length. +- Fixed numeric range disjointness is unsupported until a dedicated range parser spec exists. Before that parser exists, numeric-looking regex ranges must not be treated as proven disjoint. +- Plain param `:id` overlaps every safe regex param at the same segment position because plain param accepts any non-slash segment. Therefore constrained regex vs plain param same shape is rejected by default. +- Two identical regex ASTs at the same segment position are not aliases. They overlap and therefore emit `route-conflict` unless they are part of an already identical terminal alias case resolved later. +- If the validator cannot prove disjointness cheaply from the safe-regex AST, it must reject. It must not construct large automata or rely on runtime sampling. + +Wildcard grammar: + +- `*name` is a trailing wildcard segment only. It captures the remaining suffix after the prefix node where it attaches. +- `*name` uses the same identifier grammar as param names. +- A wildcard segment is not allowed in the middle of a path and is passed to Phase 4 as `wildcardTail`, not as a normal `parts` segment. + +Profile policy: + +- Default profile is `secure`. +- `secure`: strict method token, strict ASCII RFC path, strict percent scan, dot reject, finite limits, safe regex subset. +- `compat`: may allow raw pass-through malformed params and native RegExp best-effort guard. Fragment literal handling remains disabled unless an explicit future option defines it. Method token validation and 32-method limit still apply. +- `unsafe`: only explicit unsafe opt-outs such as unbounded limits. Unsafe profile cannot claim enterprise/security compliance. + +Current code status: + +- Leading `/`, empty segment, segment count, segment length, param count, duplicate param, regex safety are already checked. +- Runtime match strips query. +- Current registration path parser does not fully enforce RFC 3986 `pchar`, percent-escape validity, query/fragment rejection, control-character rejection, or dot-segment policy. These must be added before claiming full standards/security compliance. +- Current registration does not enforce full-path `maxPathLength`; runtime and registration limits must be separated and tested. +- Runtime malformed percent handling is strict in secure/default. Current raw pass-through on `decodeURIComponent` failure is compatibility-friendly but not strict-security behavior and belongs only in compat. +- RFC `pchar` compliance and router pattern grammar are separate concerns. `:`, `*`, `(`, `)`, `?`, `+` restrictions are router ambiguity policy, not raw RFC `pchar` requirements. +- Error reporting must carry actionable kind/reason and route index/path/method where applicable. `route-parse` and `segment-limit` alone are too coarse for enterprise validation. + +Validation error schema: + +```ts +type RouterValidationError = { + kind: 'router-validation'; + issues: RouterIssue[]; +}; + +type RouterIssue = { + kind: RouterIssueKind; + reason: string; + routeIndex?: number; + path?: string; + method?: string; + segmentIndex?: number; + offset?: number; +}; +``` + +Required issue kinds: + +- `method-empty` +- `method-invalid-token` +- `method-too-long` +- `method-limit` +- `path-missing-leading-slash` +- `path-query` +- `path-fragment` +- `path-control-char` +- `path-non-ascii` +- `path-invalid-pchar` +- `path-malformed-percent` +- `path-invalid-utf8` +- `path-encoded-slash` +- `path-encoded-control` +- `path-dot-segment` +- `path-empty-segment` +- `path-too-long` +- `segment-too-long` +- `segment-count-limit` +- `param-count-limit` +- `param-duplicate` +- `regex-unsafe` +- `optional-expansion-limit` +- `expansion-total-limit` +- `regex-sibling-limit` +- `route-duplicate` +- `route-conflict` +- `route-unreachable` +- `option-invalid` + +Public options target schema: + +```ts +type RouterOptions = { + profile?: 'secure' | 'compat' | 'unsafe'; + trailingSlash?: 'strict' | 'ignore'; + pathCaseSensitive?: boolean; + maxMethodLength?: number; + maxPathLength?: number; + maxSegmentLength?: number; + maxSegmentCount?: number; + maxParams?: number; + maxOptionalExpansions?: number; + maxExpandedRoutes?: number; + maxRegexSiblingsPerSegment?: number; + cacheSize?: number; + unsafeAllowUnboundedLimits?: boolean; + optionalParamBehavior?: 'omit' | 'set-undefined'; +}; +``` + +Public API target: + +```ts +type RouterPublicApi = { + add(method: string, path: string, value: T): void; + build(): RouterPublicApi; + match(method: string, path: string): MatchOutput | null; + allowedMethods(path: string): readonly string[]; +}; +``` + +Compatibility mapping: + +- Existing `ignoreTrailingSlash: true` maps to `trailingSlash: 'ignore'`. +- Existing `ignoreTrailingSlash: false` maps to `trailingSlash: 'strict'`. +- Existing `caseSensitive: false` maps to `pathCaseSensitive: false` and is compat-only unless separately proven secure. +- Default secure profile uses `trailingSlash: 'strict'`; preserving old behavior requires explicit compat/migration setting. +- Public error class remains compatible with existing `RouterError` where possible. New batch validation errors use `kind: 'router-validation'` and carry `issues: RouterIssue[]`; internal issue schema uses the detailed `RouterIssueKind` list above. +- Legacy external spelling from older code is handled only by a migration adapter; target spec and tests use `router-validation`. +- Default numeric limits are: `maxMethodLength = 64`, `maxPathLength = 8192`, `maxSegmentLength = 1024`, `maxSegmentCount = 256`, `maxParams = 64`, `maxOptionalExpansions = 1024`, `maxExpandedRoutes = 200_000`, `maxRegexSiblingsPerSegment = 32`, and `cacheSize = 1000`. +- Default `maxExpandedRoutes = 200_000`. This allows ordinary 100k route sets plus bounded optional expansion headroom, while rejecting pathological 100k \* 1024 expansion attempts before trie insertion. +- Default `maxRegexSiblingsPerSegment = 32`. This caps conservative regex-disjointness comparisons at one segment position. +- Default `cacheSize = 1000`. Runtime cache containers are lazy, per method, and bounded by this value. +- Default `optionalParamBehavior = 'omit'` for the target secure API. Existing compatibility behavior that returns `undefined` keys must be requested explicitly with `optionalParamBehavior: 'set-undefined'` or a compat migration profile. +- Numeric limit violations, unsupported secure/compat option combinations such as `profile: 'secure'` with `pathCaseSensitive: false`, and unsafe unbounded settings without `unsafeAllowUnboundedLimits: true` emit `option-invalid`. + +Wildcard method registration: + +- `add('*', path, value)` means all currently registered built-in/default methods plus custom methods registered before seal. +- Custom methods registered before `seal()` participate in `*` expansion. Methods introduced after `seal()` require a new router/build and do not retroactively apply to an already sealed wildcard route. +- `*` expansion is resolved during `seal()` into concrete method codes and participates in the same 32-method limit. +- If `add('*', path, value)` expands to a `(method, path)` that was explicitly registered, default batch validation treats it as the same duplicate terminal policy as ordinary registration: `route-duplicate` unless it is an optional-expansion alias explicitly marked by `isOptionalExpansion`. + +--- + +## 8. Design Principles + +### 8.1. JSC Object Fast Path First + +정적 child lookup과 method dispatch는 null-prototype object를 기본으로 둔다. + +이유: + +- 실제 재현에서 object lookup이 `Map`, `switch`, array scan, open-address hash보다 빨랐다. +- JSC는 안정적인 object shape/property lookup을 강하게 최적화한다. 단, shape transition/dictionary-mode/freeze 영향은 end-to-end profile로 확인해야 한다. +- 라우터의 child fanout은 대부분 sparse string key lookup이므로 TypedArray linear scan과 맞지 않는다. + +적용: + +- method code map: `Object.create(null)` +- input method string -> numeric method code conversion +- static route map: `Object.create(null)` +- segment static children: `Object.create(null)` +- build 이후 shape가 흔들리지 않도록 mutation phase와 sealed runtime phase를 분리한다. + +비트연산을 쓰지 않는 지점: + +- incoming method string dispatch 자체는 bit operation 대상이 아니다. +- 문자열을 직접 bit로 바꿀 수 없으므로 `methodCodes[method]`가 먼저 필요하다. +- 이 단계는 `switch`/`Map`보다 null-proto object lookup이 빠르다. + +### 8.2. Codegen Specialization Where It Actually Wins + +codegen은 유지한다. 단, 모든 것을 codegen으로 만들지 않고 source budget과 ambiguity guard를 둔다. + +채택: + +- wildcard prefix specialized walker +- unambiguous segment walker +- param factory generation +- small generated decision trees only when code size and first-match latency are proven + +근거: + +- 일부 실행에서 small specialized equality가 generic object lookup보다 빨랐지만, 다른 실행에서는 동률 또는 역전됐다. 따라서 static equality codegen은 기본 채택이 아니라 route-count/code-size threshold가 있는 조건부 후보이다. +- 기존 라우터도 codegen walker에서 param/wildcard 성능이 이미 강하다. + +주의: + +- 거대한 generated function은 instruction cache와 JIT compile cost를 악화시킬 수 있다. +- route 수가 많으면 object lookup 기반 table dispatch가 더 안전하다. +- Source budget만으로는 부족하다. 큰 tree 전체 source를 만든 뒤 포기하면 이미 build 비용을 지불한 상태가 된다. +- 100k에서는 node count, fanout, estimated source bytes, compile-time telemetry로 codegen 진입 전에 bail-out 해야 한다. + +Initial codegen limits: + +| Limit | Guard | +| ------------------------------------------------------------------------------------------------------------------------------------- | --------------: | +| max generated source per walker | 128 KiB | +| preferred generated source per walker | 64 KiB | +| max generated source stretch target | 32 KiB | +| max codegen candidate nodes per method (initial) | 4,096 | +| **default codegen budget per §13 Phase 6 / 30-run × 100 sample distribution (task 28)** — p99 Guard 10us via codegen+mandatory-warmup | **≤ 256** nodes | +| no-warmup p95-only cap (first-call p99 fails 10us at every count) | ≤ 64 nodes | +| Aggressive 3us p99 (second-call) cap | ≤ 32 nodes | +| Stretch 1us p99 — unattainable even with warmup | n/a | +| **legacy ≤16 / ≤32 caps (5-run-derived, superseded by 30-run × 100 sample)** | obsolete | +| legacy initial budget (not gate-passing) | 4,096 nodes | +| max codegen candidate fanout | 64 | +| max compile time per generated method | 10 ms | + +Fallback: + +- If any limit is exceeded, use object/table dispatch and iterative walker. +- Bail-out must happen before generating the full source string. +- Codegen telemetry must record method, node count, fanout max, estimated source bytes, actual source bytes, compile ms, and fallback reason. + +### 8.3. Allocation-Minimal Match Path + +API가 `{ value, params, meta }`를 반환하므로 성공 결과 객체와 params 객체 생성은 완전히 제거할 수 없다. 정확한 목표는 “miss/traversal 중 transient allocation 금지, success path에서 result/params를 최소 생성”이다. + +match traversal hot path에서는 다음을 금지한다. + +- `split` +- `substring` 기반 param 객체 선생성 +- `TextEncoder.encode` +- `Bun.hash` +- `Map` key concat +- `throw/catch` +- transient object allocation + +Current gap: + +- Current dynamic walker still creates segment `substring()` values during traversal. This violates the ideal allocation-minimal target and must be measured/fixed or explicitly accepted as a compatibility/performance trade-off. + +채택: + +- segment boundary는 기본적으로 JSC string primitive(`indexOf`)와 현재 walker를 유지한다. +- manual slash scan/codegen scanner는 end-to-end walker benchmark에서 이길 때만 채택한다. +- params는 `Int32Array` offset buffer에 기록한다. +- params object는 반환 직전 최소 1회만 생성하거나, API 호환 가능한 lazy materialization으로 지연한다. +- Dynamic cache params semantics: per §5.2 #4 / §5.3 F lock-in, **clone-on-cache-hit (spread) is the chosen mechanism** so caller mutation cannot poison later cache hits. `Object.freeze` is rejected on the hot path (§5.2 #4 measured 6.1× slower at 2-key, 1.55× slower at 20-key). Future optimized direction is lazy read-only params, gated by API compatibility and p75/p99 proof. +- cache는 method별 map으로 나누어 key concat을 제거한다. +- case-insensitive mode는 manual uppercase pre-scan을 넣지 말고 `toLowerCase()` 기반을 기본으로 둔다. + +근거: + +- substring param allocation `38.47 ns/op` +- offset-only param accounting `2.66 ns/op` +- cache key concat `11.37 ns/op` +- per-method cache path lookup `4.19 ns/op` +- slash scan은 microbench 변동이 있어 end-to-end 결정 필요 +- `toLowerCase()` unchanged ASCII `2.70 ns/op` +- manual lowercase pre-scan `17.54 ns/op` + +### 8.4. TypedArray Is a Memory Tool, Not the Default Lookup Tool + +TypedArray는 다음 영역에만 사용한다. + +- param offset buffer +- terminal/handler metadata table only after end-to-end proof +- compact handler indirection table +- large immutable metadata table +- method mask table +- bit flags for node/terminal metadata +- optional future packed snapshot export + +기각: + +- static child lookup의 전면 SoA linear scan +- `DataView` 기반 node access +- hot path hashing용 `Bun.hash` + +근거: + +- fanout64 object lookup `3.27 ns/op` +- fanout64 array scan `54.82 ns/op` +- open-address hash lookup `18.59 ns/op` +- DataView `3.59 ns/op`, Uint32Array `3.02 ns/op` + +### 8.5. Int Buffer / Bit Operation Policy + +int buffer와 bit 연산은 필요하다. 단, 라우터의 주 lookup 엔진이 아니라 allocation과 metadata overhead를 줄이는 보조 엔진이다. + +채택: + +- `Int32Array` param offset buffer +- terminal tag / method availability only when it reduces an actual table lookup in current per-method architecture +- method mask +- allowed-methods mask +- route method availability mask +- node flags +- compact handler indirection +- optional expansion alias metadata + +조건부: + +- bitmap/rank는 ASCII char-class prefilter나 method availability check에만 사용한다. +- perfect hash/bitmap child table은 real route distribution에서 object lookup을 이긴다는 재현 없이는 채택하지 않는다. + +기각: + +- string child lookup의 naive int-buffer scan +- packed hash key lookup +- open-address hash lookup +- `Bun.hash` 기반 hot path + +근거와 제한: + +- bitmap+popcount rank `4.95 ns/op` +- method bitmask availability `2.18 ns/op` +- method bool array availability `2.69 ns/op` +- method Set availability `3.43 ns/op` +- method Set availability `9.66 ns/op` +- terminal direct handler index `2.07 ns/op` +- terminal array method lookup `2.41 ns/op` +- terminal tagged fast path `2.39 ns/op` +- terminal tagged poly path `2.18 ns/op` +- terminal direct/array/tag microbench 차이는 작다. 현재 per-method tree에서는 terminal tag 이득이 제한적일 수 있으므로 P1 확정 항목이 아니라 P3 measured experiment로 둔다. +- fanout64 object lookup `3.27 ns/op` +- fanout64 array scan `54.82 ns/op` +- packed key lookup `25.50 ns/op` +- open-address hash lookup `18.59 ns/op` +- `Bun.hash` string `71.58 ns/op` + +### 8.6. Validation Must Be Batch + Issue Array + +라우트 등록은 pending list에 쌓고, `build()`에서 한번에 검증한다. + +채택: + +- `add()`는 user intent만 기록한다. +- `build()`에서 duplicate/conflict/unreachable/regex/wildcard conflict를 전수 검증한다. +- 실패 시 모든 문제 라우트를 issue array로 모아 하나의 `RouterError`로 보고한다. +- build 실패는 라우터 sealed 전 실패이며, partially built runtime snapshot을 노출하지 않는다. + +근거: + +- throw/catch validation `55.94 ns/op` +- issue-array validation `3.33 ns/op` + +Route precedence and conflict policy: + +| Pattern relation | Default policy | +| ------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------- | +| same method + same normalized pattern | reject `route-duplicate` | +| static vs param at same segment | static wins at match time | +| static vs regex param at same segment | static wins at match time | +| constrained regex param vs plain param same shape | reject `route-conflict`; plain param overlaps every valid non-slash regex segment | +| constrained regex param vs constrained regex param same shape | reject `route-conflict` unless the safe-regex AST proves disjointness by the conservative rules in section 7.2 | +| constrained regex param same AST at same segment | merge as same regex child; duplicate terminal is still checked at terminal insertion | +| param name differs but shape same, e.g. `/:a` and `/:b` | reject `route-duplicate` for same method | +| param name same and shape same | merge as same `paramChild` edge; duplicate terminal is still checked at terminal insertion | +| wildcard vs any longer route made unreachable by wildcard | reject `route-unreachable` | +| wildcard vs static terminal at same prefix | reject `route-unreachable` in both registration orders | +| wildcard vs wildcard at same prefix | reject `route-unreachable`; the later wildcard is fully covered by the prior wildcard's suffix space | +| regex siblings beyond `maxRegexSiblingsPerSegment` | reject `regex-sibling-limit` | +| per-route optional expansions beyond `maxOptionalExpansions` | reject `optional-expansion-limit` before expanded-route insertion | +| total expanded routes beyond `maxExpandedRoutes` | reject `expansion-total-limit` before trie insertion | +| optional expansion produces duplicate shape | alias terminal only if handler/method/options identical; otherwise reject conflict | +| wrong method same path | `match()` returns no-match; `allowedMethods(path)` may expose method metadata from the static/dynamic terminal table | +| `HEAD` vs `GET` | no implicit fallback; only registered method matches | +| `OPTIONS` | no implicit generated response; only registered method matches | + +--- + +## 9. Runtime Architecture Candidate + +### 9.1. Build Phase + +1. pending routes 수집 +2. path parse / normalize +3. optional route expansion +4. duplicate/conflict/unreachable validation +5. static route table 생성 +6. dynamic segment tree 생성 +7. terminal table / param factory 생성 +8. codegen 가능한 walker만 specialization +9. immutable runtime snapshot publish + +핵심 불변식: + +- build 실패 시 runtime snapshot 없음 +- build 성공 후 route mutation 금지 +- `build()`/internal `seal()` is single-threaded per router instance. Concurrent build/seal calls on the same instance synchronously fail with `RouterError('build-in-progress')` guarded by a per-instance non-reentrant flag. +- After successful `build()`, any later `add()` throws `RouterError('router-sealed')`. +- On `build()` failure, `totalExpandedRoutes`, method-code allocations made during that attempt, staged trie nodes, alias journals, and partial snapshot objects are discarded before throwing. +- runtime table은 monomorphic shape 유지 +- validation error는 가능한 한 batch로 보고 + +### 9.2. Match Phase + +1. method code를 null-proto object에서 조회 +2. method is never normalized +3. secure/default path policy: + 1. raw `#` no-match with no cache + 2. query strip at first raw `?` + 3. percent/UTF-8/dot/encoded-slash validation + 4. trailing slash policy + 5. compat-only case policy + 6. lookup-key construction +4. static table direct lookup first by default +5. per-method miss/hit cache lookup when it is proven beneficial +6. dynamic tree lookup +7. terminal handler index resolve +8. param offset으로 params materialize +9. hit/miss cache 기록 only after the path policy accepts the input + +The path policy in step 3 is the same six-step normalization defined in section 7.2: raw `#` reject, raw `?` query strip, percent validation, trailing slash policy, compat-only case policy, and lookup-key construction. + +Path case policy: + +- Secure/default is path case-sensitive. +- `pathCaseSensitive: false` is compat-only unless separately proven standards-safe. +- Method case is never normalized in any profile. + +Cache order policy: + +- Default runtime order is static-first, then cache, then dynamic tree. +- Static hit cache is disabled by default because the static table is already a direct lookup. +- Dynamic hit cache and miss cache may remain enabled per method. +- `cacheSize` bounds each per-method cache. The current implementation uses clock-sweep eviction for dynamic hit cache and FIFO eviction for miss cache, with no TTL. The target design keeps bounded eviction explicit and must not allow unbounded high-cardinality path retention. +- Cache-first may become default only if dynamic-heavy p75/p99 improves by at least 10% while static p75/p99 regresses by no more than 5% and cache churn does not exceed Guard target. +- Any cache key must avoid method+path string concatenation; use per-method cache tables. +- After successful `seal()`, `match()` is safe for concurrent invocations because the runtime snapshot is immutable and cache containers are bounded runtime side structures. Concurrent mutation/build on the same router remains unsupported. + +Regex sibling runtime policy: + +- Secure/default build validation allows same-position regex siblings only when their safe-regex ASTs are proven disjoint, so multiple sibling matches should be unreachable. +- If an unsafe/compat mode ever permits ambiguous regex siblings, runtime order is registration order and the mode cannot claim enterprise/security determinism. + +### 9.3. Terminal Representation + +terminal representation is a measured optimization candidate, not a blanket requirement. + +형태: + +- `tag >= 0`: fast terminal, lower bits are handler index +- `tag < 0`: poly terminal, lower bits are terminal table reference + +method 처리: + +- API input: string method +- hot path entry: `methodCodes[method]`로 numeric method code 변환 +- tree/cache/table index: numeric method code 사용 +- availability/allowed-methods/poly terminal: bitmask 사용 + +목표: + +- 현재 per-method tree에서는 단일 method terminal tag 이득이 작을 수 있다. +- multi-method/global-terminal architecture로 전환할 때만 fast/poly tag 이득이 커진다. +- handler storage와 terminal storage를 분리해 duplicate optional expansion 비용 감소 + +--- + +## 10. Adaptive Child Strategy + +재현 결과 기준 기본값은 object lookup이다. + +| Fanout/Key 형태 | 전략 | +| ---------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | +| 일반 string segment | null-proto object | +| 아주 작은 fixed static set and hot route | generated equality chain only after code-size/first-hit proof | +| wildcard prefix only | generated prefix walker | +| param-only chain | generated or iterative offset walker | +| huge static full path table | **Workload-aware (task 15 POC, §5.3 reconciled)**: per-method `Object.create(null)` retained as default for hit-dominant API gateway workloads (object hit 7.59 ns < Map hit 9.43 ns at 8 method × 12,500 routes/bucket production-realistic shard); per-method `Map` opt-in for miss/wrong-method/build/RSS-dominant workloads (Map miss 8.44 ns vs object 16.26 ns / Map build 6.7 ms vs object 19.1 ms / Map RSS 9.6 MiB vs object 14.1 MiB). Single global Map with composite key (`methodCode:path`) REJECTED — 60–70 ns concat overhead. Sharding justified by routing semantics, NOT by raw lookup speed (§5.3 line 735 unsharded microbench shows opposite trade-off due to `i % SHARDS` indexing overhead, irrelevant to numeric methodCode dispatch). | +| compact metadata only | TypedArray | +| method availability | bit mask or compact integer tag | +| ASCII char-class prefilter | bitmap only after route-distribution proof | + +기각된 전략: + +- fanout 기준 naive array scan +- static child open-address hash +- packed key lookup +- `Bun.hash` hot path +- TextEncoder byte route matching +- DataView node table + +조건부 후보: + +- perfect hash 후보 중 두 변종은 §5.2 #6 / §5.4 G에서 empirically REJECTED: (a) `Bun.hash` + open-address `Int32Array` 113.69 ns/lookup (4.1× slower than null-proto object); (b) Cuckoo hash with TS-implemented djb2/FNV 80.26 ns/lookup (2.8× slower). 추가 perfect hash 변종은 §0 implementation language scope (TypeScript only, no native bindings) 안에서 위 두 결과보다 빨라야 candidate 자격이 유지된다. +- bitmap/rank는 ASCII char-class prefilter에는 가능성이 있지만, string child lookup 대체 용도로는 현재 근거 부족이다. +- radix/compressed trie는 기본 설계로 채택하지 않는다. Static full path는 object lookup이 이미 강하고, dynamic route는 segment trie이다. P3 memory experiment로만 둔다. +- DFA/NFA는 기각한다. Regex tester와 segment grammar가 남아 있고, 현재 코드/벤치에서 object+segment trie를 이긴 근거가 없다. + +--- + +## 11. Memory Strategy + +현재 사실: + +- object node 500k: heap 증가가 크다. +- Int32Array 500k\*8 allocation probe: heap 증가는 없고 rss/arrayBuffers 쪽 증가를 별도로 봐야 한다. Raw payload is 15.26 MiB; measured RSS includes allocator/page effects. +- 100k static build/runtime state may retain duplicated static structures unless explicitly dropped or compacted after snapshot publication. +- 100k param memory is not driven by duplicated params factory functions in the measured shape: there are 100,000 factory slots but only 1 unique factory function. The remaining candidates are segment node object graph, staticChildren objects, terminal arrays/slots, handlers, generated source, and cache state. + +따라서 메모리 최적화 방향은 “전면 TypedArray 라우터”가 아니라 다음이다. + +1. runtime node object 수를 줄인다. +2. duplicated terminal/handler/factory slots를 intern한다. Unique factory functions are already interned for the measured 100k param shape. +3. optional expansion은 가능한 terminal aliasing으로 처리한다. +4. param offsets, terminal tags, method masks 같은 dense metadata만 TypedArray로 이동한다. +5. static full-path table은 object lookup을 유지한다. +6. build-only indexes and validation journals are discarded after successful snapshot publication. +7. dynamic segment tree memory is reduced only where profiles show object graph bloat: compressed static chains, suffix/template interning, terminal aliasing, or compact metadata tables. + +Build/runtime lifetime: + +- Prefix-index counters such as `subtreeTerminalCount` and `subtreeWildcardCount` are build-only validation data and must not be retained by the published runtime snapshot. +- `methodCodes` is built per router snapshot. It is not module-global, and custom method codes do not leak across router instances or rebuild attempts. + +이 방향은 현재 근거상 가장 먼저 검증해야 할 메모리 최적화 경로다. object lookup의 JSC 최적화를 버리지 않고, 메모리 bloat가 큰 부속 데이터를 compact table로 옮기는 방식이기 때문이다. “최고 효율” 여부는 100k retained memory와 p75/p99 regression을 함께 통과해야 확정한다. + +--- + +## 12. Implementation Priorities + +Implementation rule: + +- Do not optimize before the failing or bottleneck behavior is reproduced. +- Every accepted change needs a RED checkpoint, GREEN implementation, and post-change bench/profile comparison when performance or memory is affected. +- If a benchmark script is found to measure the wrong thing, fix the benchmark first and mark previous numbers obsolete. +- If two optimizations conflict, preserve correctness/security first, then p75/p99 latency, then memory, then mean ns/op. +- A microbench can select candidates, but only an end-to-end 100k gate can approve them. + +### P0: Correctness + +- `build()`에서 batch validation을 유지한다. +- 100k target band and bench methodology must be finalized before any final performance claim. +- `optionalParamBehavior`가 snapshot generation에 정확히 전달되어야 한다. +- stale regression tests must be identified by file/symptom and updated to the current snapshot structure. +- RFC 9110 method token validation을 추가한다. +- RFC 3986 path character / percent-escape / control-character / query-fragment validation을 추가한다. +- Runtime malformed percent strict policy를 정하고 테스트한다. +- Dot segment and encoded dot segment policy를 정하고 테스트한다. +- Secure/default profile에서는 unbounded `Infinity` limits를 금지하거나 explicit unsafe opt-out으로 격리한다. +- 100k mixed build bottleneck을 재현 테스트로 고정하고 원인을 제거한다. +- 100k mixed build must be phase-instrumented before optimization: parse, optional expansion, static insert, dynamic insert, wildcard conflict check, snapshot build, codegen. +- Wildcard/static conflict validation moves from O(static \* wildcard-prefix) scan to indexed prefix/trie validation if phase instrumentation confirms it as the 100k mixed bottleneck. + +### P1: Hot Path + +- method object lookup 유지 +- static object lookup 유지 +- dynamic codegen walker 유지 +- offset param 유지 +- param factory 중복 호출 제거 +- params cache mutation semantics 확정: frozen, clone-on-hit, or lazy read-only. +- dynamic traversal `substring()` allocation 제거 또는 end-to-end 근거 기반 수용 +- static hit cache order 재측정: cache-first vs static-first +- static table layout 재측정: method-first vs path-first method array +- per-method cache는 high-cardinality workload에서 이득/손해를 profile로 판단 +- codegen preflight 추가: node-count, fanout, source estimate, compile time telemetry. + +### P2: Memory + +- 100k param retained heap을 줄인다. +- 100k param heap source를 object count로 분해한다: segment nodes, static child maps, terminals, factories, generated code, cache. +- terminal handler aliasing +- params factory interning is accepted only after re-measuring shapes where unique factories are not already 1. The measured `100k param` shape already has 1 unique factory function, so its target is factory slots/terminal metadata, not factory function identity. +- optional expansion terminal 중복 제거 +- dense metadata TypedArray화 +- build-only static structures drop/compact +- rollback/validation journal의 closure allocation을 typed journal or two-pass prevalidation로 대체할지 검증 +- dynamic static-chain compression, suffix/template interning은 measured memory experiment로만 채택 + +### P3: Conditional Experiments + +- perfect hash only for proven huge static sets +- lazy params object materialization +- generated static equality only below code-size threshold +- terminal tag fast/poly only if end-to-end shows benefit; not a default requirement +- compact path-first static table plus method mask/handler slots vs method-first table +- manual slash scan vs `indexOf` across path length/slash distributions +- radix/compressed trie for dynamic static-chain memory only +- route distribution based specialization + +### Required RED Reproducers Before Router Refactor + +| Reproducer | Must prove | Acceptable outcome | +| -------------------------- | ---------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------- | +| optional behavior | `optionalParamBehavior: 'omit'` is ignored by current seal path | failing test before fix | +| params factory double-call | one dynamic hit invokes factory twice or allocates twice | failing counter/allocation test before fix; GREEN requires factory invocation count == 1 per successful dynamic match | +| invalid method token | empty/space/control/delimiter methods are accepted today | failing validation test before fix | +| registration path policy | query/fragment/control/malformed percent/dot path accepted today | failing validation test before fix | +| runtime strict percent | malformed/unsafe encoded runtime path behavior is currently compat/raw-pass-through | policy test documents current behavior before change | +| 100k mixed build | phase split identifies dominant build phase | timing output with phase percentages; GREEN requires dominant phase share <= 60% Guard after optimization | +| 100k param memory | heap profile identifies top retained object groups | object-count/retained-size report | +| cache order | static-first vs cache-first measured on static-hot, static-cold, churn, miss | p75/p99 comparison | +| static layout | method-first vs compact path-first measured with multi-method and wrong-method semantics | latency + memory comparison | +| codegen preflight | large tree codegen cost is measured before/after preflight | source bytes + compile ms | + +--- + +## 13. Implementation Blueprint + +This section is the build plan. It defines where each change goes, the algorithm to use, and the RED/GREEN proof required before moving on. + +### Phase 0: Bench And Test Infrastructure + +Goal: + +- Make current failures and performance bottlenecks reproducible without ad-hoc shell snippets. + +Files: + +- `packages/router/bench/100k-verification.ts` +- `packages/router/bench/100k-gate-runner.ts` +- new `packages/router/test/enterprise-validation.test.ts` +- new `packages/router/test/cache-semantics.test.ts` + +Implementation: + +- Keep `100k-gate-runner.ts` as the fresh-process aggregation runner. +- Add JSON output mode to the runner before final optimization work. +- Add phase timer hooks around registration stages before changing wildcard conflict logic. +- Add RED tests for method token, path policy, optional omit, params cache mutation, HEAD/OPTIONS, and route precedence. + +Exit criteria: + +- RED tests fail on current code for known defects. +- `100k mixed` phase output identifies where time is spent. +- Baseline gate output can be saved and compared after implementation. + +### Phase 1: Batch Validation And Security Profile + +Goal: + +- Implement secure/default validation without changing match hot path first. + +Files: + +- `packages/router/src/types.ts` +- `packages/router/src/router.ts` +- `packages/router/src/pipeline/registration.ts` +- `packages/router/src/builder/path-parser.ts` +- new `packages/router/src/builder/method-policy.ts` +- new `packages/router/src/builder/path-policy.ts` +- new `packages/router/src/builder/validation-issue.ts` + +Data model: + +```ts +type RouterProfile = 'secure' | 'compat' | 'unsafe'; + +type RouterIssue = { + kind: RouterIssueKind; + reason: string; + routeIndex?: number; + path?: string; + method?: string; + segmentIndex?: number; + offset?: number; +}; +``` + +Algorithm: + +- `add()` still records intent only. +- `seal()` validates pending routes in one pass and collects `RouterIssue[]`. +- Method validation runs before method code allocation. +- Path raw-character validation runs before route grammar parsing. +- Dot-segment validation runs on percent-decoded segment only for dot detection. +- Regex policy validates param regex before `RegExp` construction. +- If issues exist, throw one `RouterValidationError` containing all issues. + +Default values: + +- `profile = 'secure'` +- `maxMethodLength = 64` +- `maxPathLength = 8192` +- `maxSegmentLength = 1024` +- `maxSegmentCount = 256` +- `maxParams = 64` +- `maxOptionalExpansions = 1024` +- `maxExpandedRoutes = 200_000` +- `maxRegexSiblingsPerSegment = 32` +- `cacheSize = 1000` +- `optionalParamBehavior = 'omit'` + +RED tests: + +- invalid methods accepted today. +- query/fragment/control/dot/malformed percent paths accepted today. +- `Infinity` limits accepted in secure/default today where applicable. +- unsafe regex constructs accepted today where applicable. + +GREEN criteria: + +- All invalid cases produce deterministic issue kinds. +- Multiple invalid routes produce one batched error. +- Valid custom methods such as `PROPFIND`, `PATCH+X`, `foo`, `get` still work. +- Existing valid route grammar remains compatible under `compat` where needed. + +Performance risk: + +- Validation is build-time only. No match hot-path regression is allowed. + +### Phase 2: Runtime Secure Path Scanner + +Goal: + +- Enforce secure/default runtime percent, dot, fragment, control, and encoded slash policy before cache/static/dynamic lookup. + +Files: + +- new `packages/router/src/matcher/runtime-path-policy.ts` +- `packages/router/src/codegen/emitter.ts` +- `packages/router/src/pipeline/build.ts` +- tests in `packages/router/test/runtime-path-policy.test.ts` + +Algorithm: + +- Run the scanner before cache lookup. Secure/default scanner order is the same six-step normalization defined in section 7.2: raw `#` reject with no cache, raw `?` query strip, percent/UTF-8/dot/encoded-slash validation, trailing slash policy, compat-only case policy (n/a in secure), and lookup-key return. +- In secure/default, malformed or unsafe path returns no-match and is not recorded in hit/miss caches. +- The scanner returns `{ ok: true, path }` or `{ ok: false, reason }`. +- Param/wildcard percent decoding uses the same validated byte spans, avoiding a second unsafe decode path where practical. + +RED tests: + +- malformed `%`, invalid UTF-8, `%2F`, `%00`, `%2e`, fragment `#` currently do not follow secure/default policy. + +GREEN criteria: + +- All unsafe runtime inputs no-match in secure/default. +- Compat preserves documented behavior only when explicitly selected. +- Static, param, wildcard warmed p99 remain within Guard. + +Performance risk: + +- Scanner is on match hot path. It must be single-pass over the path and avoid allocation on valid ASCII paths. + +### Phase 3: Optional Param Behavior And Params Cache Semantics + +Goal: + +- Fix `optionalParamBehavior: 'omit'` and remove factory double-call without cache poisoning. + +Files: + +- `packages/router/src/router.ts` +- `packages/router/src/pipeline/registration.ts` +- `packages/router/src/codegen/emitter.ts` +- `packages/router/src/builder/optional-param-defaults.ts` + +Algorithm: + +- Pass `routerOptions.optionalParamBehavior` into `registration.seal({ optionalParamBehavior })`. +- Keep param factory keyed by behavior and present param set. +- Replace double factory call with one materialization plus cache-safe storage. +- **Locked implementation choice (per §5.2 #4 / §5.3 F)**: `clone-on-cache-hit (spread)`. The cached params object is stored once and every cache-hit returns `{...cached}`. `Object.freeze({...})` per call is rejected (40.76 ns vs 12.77 ns at 2-key; 137.43 ns vs 26.70 ns at 20-key — 1.55–3.73× slower across param counts). `clone-on-cache-store` alone is also rejected for safety. Lazy read-only params remain a Phase 3b candidate. +- Do not store the same mutable params object that is returned to the caller. + +RED tests: + +- `omit` currently returns `id: undefined`. +- params mutation followed by same-path lookup must keep original cached value across 1st, 2nd, and 3rd hit. + +GREEN criteria: + +- `omit` produces absent key. +- `set-undefined` produces key with `undefined`. +- caller mutation cannot change later cache hits. +- dynamic hit p99 does not regress beyond Guard budget. + +Performance risk: + +- Freezing may be expensive on hot path. +- Clone-on-hit may add allocation. +- If both regress, implement lazy read-only params as Phase 3b. + +### Phase 4: Wildcard Conflict Index + +Goal: + +- Remove the reproduced O(static \* wildcard-prefix) build blow-up. + +Files: + +- `packages/router/src/pipeline/registration.ts` +- new `packages/router/src/pipeline/wildcard-prefix-index.ts` +- tests in `packages/router/test/route-conflict.test.ts` +- bench in `packages/router/bench/100k-verification.ts` + +Data structure: + +```ts +type WildcardPrefixIndex = Map; + +type PrefixTrieNode = { + literalChildren: Record; + paramChild: PrefixTrieNode | null; + paramName: string | null; + regexParamChildren: PrefixTrieNode[]; + regexAst: SafeRegexAst | null; + wildcardName: string | null; + terminalMeta: RouteMeta | null; + subtreeTerminalCount: number; + subtreeWildcardCount: number; +}; +``` + +Algorithm: + +- Maintain one tokenized trie per method code. +- Segment keys come from the same parsed/expanded/normalized route parts used for registration after secure/default policy validation. +- The trie stores literal, param, regex-param, wildcard, and terminal edges. +- When registering any route, check whether an ancestor wildcard already makes it unreachable. +- When registering a wildcard route, check whether existing descendant terminals already exist below its prefix, independent of registration order. +- Param prefix wildcard examples such as `/:tenant/files/*path` are represented by param edges, not stringified literal prefixes. +- Optional-expanded routes are checked after expansion so aliases/conflicts are visible. +- If any walked trie node has `wildcardName`, the route is unreachable/conflicting. +- `paramChild` is a single shape edge by policy. A second same-position plain param with a different name is not a new edge; it emits `route-duplicate` for the same method. +- `route-duplicate` covers same method plus structurally identical pattern shape, even when param names differ; it is not limited to byte-identical path strings. +- `subtreeTerminalCount` is incremented on every visited ancestor, including the terminal node itself, at commit. Wildcard insertion reads this counter at any ancestor, including the prefix node, in O(1) without subtree enumeration. +- Complexity for static/plain-param/wildcard prefix checks becomes O(segment count) per expanded route. Regex-param insertion adds sibling comparison cost O(regex siblings at that segment \* conservative AST comparison). `maxRegexSiblingsPerSegment = 32` prevents unbounded sibling comparison and emits `regex-sibling-limit` when exceeded. Optional expansion multiplies work by expanded route count and must be capped globally. +- Pseudocode convention: `parts` excludes the trailing wildcard capture segment. `wildcardTail` is passed separately as `null | { name: string }`. +- Batch validation convention: when `issue(...)` is emitted for a route, stop mutating the prefix index for that route but keep processing later routes so all independent issues can be collected. +- Expansion counter convention: `totalExpandedRoutes` is a per-`build()`/`seal()` batch counter initialized to 0 before pending routes are validated. It is not module-level or router-lifetime state. +- Expansion wrapper convention: `routeSpec` is a normalized pre-expansion route descriptor produced by Phase 1 path parsing. `optionalExpansions(routeSpec)` yields concrete expanded routes. Every yielded `ExpandedRoute.meta` must set `isOptionalExpansion = true` if and only if that concrete route was produced by optional-segment dropping; the all-present route and ordinary repeated `add()` calls keep `isOptionalExpansion = false`. `expandAndAdd` is invoked once per pending route during seal. +- Expansion cap convention: `totalExpandedRoutes` increments before per-expanded-route validation. Routes that fail later validation still consume capacity because the cap protects build-time work, not only successful registrations. +- Batch continuation convention: when `expandAndAdd` emits `expansion-total-limit`, batch validation records one consolidated `expansion-total-limit` issue for the batch and then skips further expanded-route insertion/counting for that overflowing batch segment to avoid issue spam. Independent non-expansion validation can still continue where safe. +- Batch consolidation convention: `batchTotalLimitEmitted: boolean` is a per-`build()`/`seal()` flag initialized to `false`. The first `++totalExpandedRoutes > maxExpandedRoutes` condition emits one `expansion-total-limit` issue and sets the flag. Subsequent `expandAndAdd` invocations within the same batch return immediately without emitting additional `expansion-total-limit` issues. The flag and `totalExpandedRoutes` are both reset to initial values on `build()` failure cleanup. +- Lazy node allocation convention: the reference pseudocode below allocates `plannedNode` eagerly inside `planEdge` for traversal clarity. Implementations may defer `createNode()`/`createRegexNode()` to `commitEdge` as a build-time optimization so that abandoned plans on validation failure incur zero allocator pressure. To reconcile the descent dependency at validation time, lazy implementations must either (a) reuse a single per-build transient placeholder node that carries empty `literalChildren`/`paramChild`/`regexParamChildren` and is never committed, or (b) thread `(parent, key, kind)` references through validation and resolve children via the parent rather than via the planned descendant. Either form is permitted; the observable semantics are identical and the §11 build-time efficiency invariant under high 100k mixed insertion volume must be preserved. +- Issue metadata convention: `routeSpec.meta` carries the original pre-expansion route index/path/method. `routeMeta` carries the concrete post-expansion path plus the same original route index. Validation issues must expose both when useful: `path` is the original registered pattern, and `expandedPath` is optional diagnostic metadata for the concrete expanded route. +- Wildcard count convention: when a wildcard route commits, `plan.visited` contains the root, every ancestor, and the prefix node where the wildcard attaches. Every visited node receives `subtreeWildcardCount++`, including the prefix attachment node itself; no separate wildcard anchor node is created. +- Preserve existing wildcard name conflict checks. +- Regex-param conflict handling uses the conservative disjointness policy from section 7.2. The prefix index must treat non-proven regex overlap as conflict; it must not attempt general regex automata construction. +- Regex sibling limit has priority over regex overlap checks. If adding a regex sibling would exceed `maxRegexSiblingsPerSegment`, emit `regex-sibling-limit` before running AST disjointness, even if the same candidate would also overlap. +- `terminalMeta` stores route index/path/method/handler/options identity for duplicate, alias, and conflict diagnostics. Build-only counters and validation trie state are discarded after snapshot publication as described in section 11. +- `handlerId` is assigned by a build-scoped identity registry: `WeakMap` for non-null object/function values and a tagged primitive map for string/number/boolean/bigint/symbol/null/undefined route values. The same reference or same primitive value receives the same id within one build. +- `optionsKey` is `hash(deepStableSerialize(routeOptions))`, so semantically equal route options produce the same key. `deepStableSerialize` uses sorted object keys, canonical primitive tags, `RegExp` as `{source,flags}`, `BigInt` as a decimal string with a bigint tag, and rejects function, symbol, and circular option values as `option-invalid`. +- `isOptionalExpansion` is true only for concrete routes produced by optional-param expansion, not for ordinary repeated `add()` calls. Alias success is allowed only in that optional-expansion context. +- Wildcard at root rule: when `parts = []` and `wildcardTail !== null`, the prefix attachment node is the per-method root node. + +Pseudocode: + +```ts +type RouteMeta = { + routeIndex: number; + path: string; + expandedPath?: string; + method: string; + handlerId: number; + optionsKey: string; + isOptionalExpansion: boolean; +}; +type NormalizedSafeRegexAst = object; +type SafeRegexAst = NormalizedSafeRegexAst; +type RoutePart = + | { type: 'static'; value: string } + | { type: 'param'; name: string } + | { type: 'regex'; name: string; regexAst: SafeRegexAst }; +type ExpandedRoute = { methodCode: number; parts: RoutePart[]; wildcardTail: null | { name: string }; meta: RouteMeta }; +type RouteSpec = { meta: RouteMeta; parts: RoutePart[] }; +type IssuePlan = { issue: RouterIssueKind }; +type AliasPlan = { aliasOf: RouteMeta }; +type CommitPlan = { + methodCode: number; + edges: PlannedEdge[]; + visited: PrefixTrieNode[]; + wildcardTail: null | { name: string }; + routeMeta: RouteMeta; +}; +type PrefixPlan = IssuePlan | AliasPlan | CommitPlan; +type PlannedEdge = + | { kind: 'static'; parent: PrefixTrieNode; key: string; node?: PrefixTrieNode; plannedNode?: PrefixTrieNode } + | { kind: 'param'; parent: PrefixTrieNode; name: string; node?: PrefixTrieNode; plannedNode?: PrefixTrieNode } + | { kind: 'regex'; parent: PrefixTrieNode; regexAst: SafeRegexAst; node?: PrefixTrieNode; plannedNode?: PrefixTrieNode }; + +function createNode(): PrefixTrieNode; +function createRegexNode(regexAst: SafeRegexAst): PrefixTrieNode; +function rootFor(methodCode: number): PrefixTrieNode; +function safeRegexDisjoint(a: SafeRegexAst, b: SafeRegexAst): boolean; +function sameRegexAst(a: SafeRegexAst, b: SafeRegexAst): boolean; +function optionalExpansions(routeSpec): Iterable; +function sameTerminalIdentity(a: RouteMeta, b: RouteMeta): boolean; +function recordAlias(existing: RouteMeta, alias: RouteMeta): void; +function issue(kind: RouterIssueKind, meta: RouteMeta): void; + +// Helper contracts: +// - createNode returns an empty node with regexAst=null, terminalMeta=null, and zero counters. +// - createRegexNode(regexAst) is createNode() plus node.regexAst=regexAst. +// - rootFor(methodCode) returns the build-only prefix-index root for that concrete method. +// - safeRegexDisjoint returns true only for the conservative section 7.2 proof cases. +// false means either proven overlap or unknown; both reject as route-conflict. +// - sameRegexAst is structural equality over the normalized safe-regex AST. +// Canonicalization folds `{1,}` to `+`, `{0,}` to `*`, and `{0,1}` to `?`. +// It does not fold semantic aliases such as `\d` and `[0-9]`; those remain +// distinct ASTs unless a future parser explicitly adds that equivalence. +// - optionalExpansions yields concrete routes in deterministic order: all-present first, +// then increasing drop-subset bit order matching current expandOptional behavior. +// - sameTerminalIdentity is exactly: +// a.method === b.method && a.handlerId === b.handlerId && a.optionsKey === b.optionsKey. +// - recordAlias appends to a build-only aliasJournal[] with +// { existingTerminalMeta, aliasRouteMeta }. After validation succeeds, +// the static-table/segment-trie snapshot builder consumes aliasJournal[] +// and writes the alias terminal to the same handler/options metadata. It +// never mutates the prefix-index counters. At match time the alias resolves +// through the same handler index as the existing terminal. + +function expandAndAdd(routeSpec: RouteSpec): void { + if (batchTotalLimitEmitted) return; + let perRouteExpandedCount = 0; + for (const expanded of optionalExpansions(routeSpec)) { + if (++perRouteExpandedCount > maxOptionalExpansions) { + return issue('optional-expansion-limit', routeSpec.meta); + } + if (++totalExpandedRoutes > maxExpandedRoutes) { + if (!batchTotalLimitEmitted) { + batchTotalLimitEmitted = true; + return issue('expansion-total-limit', routeSpec.meta); + } + return; + } + addExpandedRoute(expanded.methodCode, expanded.parts, expanded.wildcardTail, expanded.meta); + } +} + +function addExpandedRoute( + methodCode: number, + parts: RoutePart[], + wildcardTail: null | { name: string }, + routeMeta: RouteMeta, +): void { + const plan = validateExpandedRoute(methodCode, parts, wildcardTail, routeMeta); + if ('issue' in plan) return issue(plan.issue, routeMeta); + if ('aliasOf' in plan) return recordAlias(plan.aliasOf, routeMeta); + commitExpandedRoute(plan); +} + +function validateExpandedRoute( + methodCode: number, + parts: RoutePart[], + wildcardTail: null | { name: string }, + routeMeta: RouteMeta, +): PrefixPlan { + let node = rootFor(methodCode); + const visited = [node]; + const edges = []; + + for (const part of parts) { + if (node.wildcardName !== null) return { issue: 'route-unreachable' }; + const edge = planEdge(node, part); + if ('issue' in edge) return { issue: edge.issue }; + edges.push(edge); + node = edge.node ?? edge.plannedNode; + visited.push(node); + } + + if (wildcardTail !== null) { + if (node.subtreeTerminalCount > 0 || node.subtreeWildcardCount > 0) { + return { issue: 'route-unreachable' }; + } + } else { + if (node.terminalMeta !== null) { + if (!routeMeta.isOptionalExpansion) return { issue: 'route-duplicate' }; + return sameTerminalIdentity(node.terminalMeta, routeMeta) ? { aliasOf: node.terminalMeta } : { issue: 'route-conflict' }; + } + // This terminal check is distinct from the loop check above: the loop + // catches ancestor wildcards; this catches a wildcard attached exactly + // at the candidate terminal prefix. + if (node.wildcardName !== null) return { issue: 'route-unreachable' }; + } + + return { methodCode, edges, visited, wildcardTail, routeMeta }; +} + +function commitExpandedRoute(plan: CommitPlan): void { + for (const edge of plan.edges) commitEdge(edge); + const terminalNode = plan.visited[plan.visited.length - 1]; + if (plan.wildcardTail !== null) terminalNode.wildcardName = plan.wildcardTail.name; + else terminalNode.terminalMeta = plan.routeMeta; + + for (const seen of plan.visited) { + if (plan.wildcardTail !== null) seen.subtreeWildcardCount++; + else seen.subtreeTerminalCount++; + } +} + +function planEdge(node: PrefixTrieNode, part: RoutePart): PlannedEdge | { issue: RouterIssueKind } { + // Reference pseudocode allocates plannedNode eagerly so the validation walk + // can descend through it. Implementations may defer createNode/createRegexNode + // to commitEdge as an optimization (see lazy-allocation convention above); + // the observable semantics are identical. + if (part.type === 'static') { + const child = node.literalChildren[part.value]; + return child !== undefined + ? { kind: 'static', parent: node, key: part.value, node: child } + : { kind: 'static', parent: node, key: part.value, plannedNode: createNode() }; + } + if (part.type === 'param') { + if (node.regexParamChildren.length > 0) return { issue: 'route-conflict' }; + if (node.paramChild !== null && node.paramName !== part.name) return { issue: 'route-duplicate' }; + return node.paramChild !== null + ? { kind: 'param', parent: node, name: part.name, node: node.paramChild } + : { kind: 'param', parent: node, name: part.name, plannedNode: createNode() }; + } + if (node.paramChild !== null) return { issue: 'route-conflict' }; + // The cap check intentionally precedes disjointness comparison; when both + // overlap and cap overflow are possible, `regex-sibling-limit` wins. + if (node.regexParamChildren.length >= maxRegexSiblingsPerSegment) return { issue: 'regex-sibling-limit' }; + for (const existing of node.regexParamChildren) { + if (sameRegexAst(existing.regexAst, part.regexAst)) { + return { kind: 'regex', parent: node, regexAst: part.regexAst, node: existing }; + } + } + for (const existing of node.regexParamChildren) { + if (!safeRegexDisjoint(existing.regexAst, part.regexAst)) return { issue: 'route-conflict' }; + } + return { kind: 'regex', parent: node, regexAst: part.regexAst, plannedNode: createRegexNode(part.regexAst) }; +} + +function commitEdge(edge: PlannedEdge): void { + if (edge.node !== undefined) return; + if (edge.kind === 'static') edge.parent.literalChildren[edge.key] = edge.plannedNode; + else if (edge.kind === 'param') { + edge.parent.paramName = edge.name; + edge.parent.paramChild = edge.plannedNode; + } else { + edge.parent.regexParamChildren.push(edge.plannedNode); + } +} +``` + +RED benchmark: + +- `wildcard-conflict-feasibility` currently reaches `26280.32 ms` at 50k routes. +- A route that conflicts after creating staged edges must leave no committed prefix-index state for later routes in the same batch. +- Registering 33 disjoint regex params at the same segment position must emit `regex-sibling-limit` when `maxRegexSiblingsPerSegment = 32`. +- `/a` then `/a/*p` and `/a/*p` then `/a` must emit the same collision-class issue kind: `route-unreachable`. +- A route set whose total optional expansions exceed `maxExpandedRoutes` must emit `expansion-total-limit` before any static/dynamic trie insertion for the overflowing expanded route. +- A single route whose optional expansions exceed `maxOptionalExpansions` must emit `optional-expansion-limit`. +- `/*path` registered for a method root must attach wildcard metadata to the root prefix node and detect root-level descendants in both registration orders. +- Ordinary duplicate `add('GET', '/foo', handler)` must emit `route-duplicate`; only optional-expanded duplicate shapes with identical terminal identity may alias. +- `/x/:r(\\d+)/a` followed by `/x/:r(\\d+)/b` must reuse the same regex child and must not emit `route-conflict`. + +GREEN criteria: + +- Same or stricter conflict detection than current implementation, with deterministic `route-conflict`, `route-unreachable`, or `regex-sibling-limit` issue kind. +- The same collision class emits the same issue kind regardless of registration order. Static terminal vs wildcard terminal at the same prefix emits `route-unreachable` in both orders. +- A route that emits an issue during prefix-index validation must not mutate the prefix index in a way that can affect later routes in the same batch. +- Registering more than `maxRegexSiblingsPerSegment` disjoint regex params at the same segment position emits `regex-sibling-limit`. +- 50k disjoint wildcard/static build drops by at least 10x. Derivation: current 50k stress is `26280.32 ms`; the 100k mixed Guard is `3000 ms`, so a same-order build fix needs at least `26280.32 / 3000 = 8.76x` improvement before 100k overhead. This is a best-case proxy because the 50k disjoint stress and 100k mixed workload are not identical. The criterion is rounded to 10x to leave headroom for validation and snapshot cost. +- `100k mixed` add+build p99 passes Guard target; Aggressive requires measured proof after the index is implemented. +- The 50k stress 10x criterion and the 100k mixed Guard are independent gates. Current same-harness 100k mixed is about 21 seconds, so the 100k mixed Guard requires roughly 7x improvement regardless of the 50k stress result. +- Global build capacity caps total expanded routes. `maxOptionalExpansions` is per-route; `maxExpandedRoutes` prevents 100k registered routes from expanding into 102.4 million trie insertions. +- Default `maxExpandedRoutes = 200_000`; exceeding it emits `expansion-total-limit` before dynamic/static trie insertion. +- No retained runtime memory from build-only prefix index after snapshot publication. + +Performance risk: + +- Build-only trie must be discarded after successful seal. +- Prefix normalization must exactly match path parser output. + +### Phase 4b: Segment-Tree Insertion Optimization (wildcard-heavy) + +Goal: + +- Reduce `insertIntoSegmentTree` cost identified by §5.3 C as 18.5% top hot function for `100k wildcard-heavy`. + +Files: + +- `packages/router/src/matcher/segment-tree.ts` +- `packages/router/src/pipeline/registration.ts` +- bench: `packages/router/bench/100k-verification.ts` `100k wildcard-heavy` scenario + +Algorithm: + +- Profile sub-path inside `insertIntoSegmentTree` per segment kind (literal, param, regex, wildcard). +- Fast-path inserts for the common case (literal segment to existing literal child). +- Cache `staticChildren` map allocation; reuse `null-proto` object instances when possible during build. +- Optional: lazy initialization of `regexParamChildren` empty array until first regex sibling is added. + +RED benchmark: + +- `100k wildcard-heavy` build p99 currently 490.35 ms (§5.1 Fresh-process 30-run gate). +- CPU profile shows `insertIntoSegmentTree` dominant. + +GREEN criteria: + +- `100k wildcard-heavy` build p99 ≤ 250 ms (Aggressive band) without regressing other shapes. +- `insertIntoSegmentTree` self-CPU share drops below 10% in re-profiled `100k wildcard-heavy`. +- No correctness regression on §14.2 wildcard fixtures. + +### Phase 4c: compileStaticRoute Optimization (high-fanout) + +Goal: + +- Reduce `compileStaticRoute` cost identified by §5.3 C as 14.0% top hot function for `100k high-fanout`. + +Files: + +- `packages/router/src/pipeline/registration.ts` +- bench: `packages/router/bench/100k-verification.ts` `100k high-fanout` scenario + +Algorithm: + +- Profile `compileStaticRoute` per static route insertion path; identify object-allocation, `staticMap[method]` lookup, and `terminalHandlers.push` hot points. +- Pre-size `terminalHandlers` and `staticRegistered[method]` arrays based on pending route count. +- Method-bucket Map vs object representation (cross-references Phase 5b). + +RED benchmark: + +- `100k high-fanout` build p99 currently 285.74 ms. +- CPU profile shows `compileStaticRoute` 14.0% + `gc` 13.2%. + +GREEN criteria: + +- `100k high-fanout` build p99 ≤ 250 ms (Aggressive band). +- GC share drops to ≤8% (matches mixed/param baseline). +- No correctness regression on `100k high-fanout` 30-run gate. + +### Phase 5: Static-First Match Order + +Goal: + +- Make static table direct lookup the default before cache checks. + +Files: + +- `packages/router/src/codegen/emitter.ts` +- `packages/router/src/pipeline/build.ts` +- `packages/router/test/cache-semantics.test.ts` +- `packages/router/bench/100k-verification.ts` + +Algorithm: + +- Match order: method code -> normalization -> static table -> dynamic hit/miss cache -> dynamic walker. +- Disable static hit cache by default. +- Keep dynamic hit cache and miss cache per method. +- Avoid method+path concatenated cache keys. +- Static wrong-method lookup uses allowed-method metadata generated at build time. +- Static miss is not inserted into dynamic miss cache unless dynamic walker also misses. +- Dynamic miss cache records only normalized safe runtime paths. +- Path-first static layout remains a candidate, but default implementation keeps method-first until memory/method semantics prove otherwise. + +RED benchmark: + +- Candidate microbench shows static-first faster than cache-first for static-heavy. This is candidate-selection evidence only. Default adoption requires fresh-process 3-run end-to-end p75/p99 proof across static-hot, static-cold, dynamic-heavy, cache-churn, miss, and wrong-method shapes. + +GREEN criteria: + +- static p75/p99 improves or stays within 5%. +- dynamic-heavy p75/p99 does not regress beyond Guard budget. +- high-cardinality churn does not grow retained cache memory. + +Performance risk: + +- Workloads dominated by dynamic repeated hits may prefer cache-first. +- If dynamic-heavy regresses by >5%, add adaptive mode gated by route distribution. + +### Phase 5b: Static Table Representation (per-method object vs Map) + +Goal: + +- Resolve §5.2 #6 / §5.3 B / §5.4 finding: `Map` is 1.32–2.13× faster than null-proto object at 100k full-path scale across 5 key distributions and adversarial collision-prone patterns. Phase 5b decides whether the static table representation should switch from `Object.create(null)` to `Map` per method, retain object, or use a hybrid (object for small methods, Map above a threshold). + +Files: + +- `packages/router/src/pipeline/registration.ts` (`staticMap` and `staticRegistered` representation) +- `packages/router/src/pipeline/match.ts` (lookup hot path) +- bench: new `packages/router/bench/static-table-rerun.ts` (already exists), extended for end-to-end `100k static` measurement + +Algorithm: + +- Implement two static-table builders: `ObjectStaticTable` (current) and `MapStaticTable` (new). +- For `100k static` and `100k mixed`, run fresh-process 30-run gate with both representations. +- Measure: build time, RSS, hit/miss/wrong-method p75/p99 for each shape under both. +- Decision matrix: + - If `MapStaticTable` is ≥10% faster on `100k static` warmed hit p75 with no RSS regression beyond +5%, switch default to Map. + - If gap is < 10% or RSS regresses ≥5%, retain object. + - If hybrid (Map for ≥10k routes/method, object below) wins both, document threshold. + +RED benchmark + closure: + +- §5.3 line 725 confirms 1.99× lookup advantage for Map at 100k **unsharded** (single-table microbench). +- §5.4 line 814 third re-confirmation 1.92× (same unsharded scope). +- §5.3 E shows 1.32–2.13× across diverse key distributions (same scope). +- **Task 15 POC reversal at production-realistic per-method shard (§5.3 patched)**: object hit 7.59 ns < Map hit 9.43 ns (1.24× faster) at 8 method × 12,500 routes/bucket. Map wins miss 1.93× / wrong-method 1.78× / build 2.85× / RSS 32% less. Single global Map composite-key REJECTED (60–70 ns concat). +- **Phase 5b decision (closed)**: per-method `Object.create(null)` retained as default for hit-dominant; per-method `Map` opt-in via `RouterOptions.staticTableRepresentation: 'map'` for miss/wrong-method/build/RSS-dominant workloads; hybrid threshold deferred to per-method route count > 50,000 if/when measured. + +GREEN criteria: + +- 30-run fresh-process p99 verdict for both representations on `100k static`, `100k param`, `100k mixed`. +- Build-time `Map.set` cost measured and accounted for (§5.2 line 700 omitted this — must be added). +- Decision recorded in §4 decision-state with `Confirmed` (Map), `Confirmed` (object), or `Hybrid threshold = N`. + +Performance risk: + +- `Map` build cost (`Map.set` per route) may regress build time. §5.2 only measured object build (73 ns/key) and `Bun.hash` build (113 ns/key); `Map.set` cost is unmeasured. +- `Map` MISS path (8.63 ns) is slightly slower than object MISS (7.17 ns) per §5.3 B; if 100k workload is miss-heavy (e.g., cache churn), Map may lose. + +### Phase 5c: Method Availability Bitmask (allowedMethods cold path + wrong-method hot path) + +Goal: + +- Apply §4 line 220 Confirmed `method availability via bitmask` to runtime work. Currently no §13 phase implements this Confirmed lock — the only place §1 microbench's 2.18 ns bitmask vs 3.43–9.66 ns Set advantage materializes today is method dispatch (`methodCodes[method]`), not availability. + +Files: + +- `src/pipeline/match.ts` (`allowedMethods()` cold path) +- `src/codegen/emitter.ts` (wrong-method early-out on hot path) +- `src/pipeline/registration.ts` / `src/pipeline/build.ts` (build-time `pathToMethodMask` table generation) +- `bench/poc-method-bitmask.ts` (already authored; production conversion) + +Algorithm: + +- During build, accumulate one `Map` (or `Object.create(null)`-keyed `Record`) where keys are normalized static paths and values are 32-bit bitmasks (`1 << methodCode` per registered method per path). Dynamic terminals carry the same per-terminal mask in the snapshot's terminal table. +- `allowedMethods(path)` cold path: single mask lookup → `popcount32` for length → bit iteration via `m & -m` and `Math.clz32` to enumerate method codes. +- Hot-path wrong-method early-out (Phase 5 emitter): after `staticOutputsByMethod[mc][sp]` static-table miss, before falling into dynamic walker, AND the mask with `1 << mc` to short-circuit the wrong-method case (`return null` directly into `missCacheByMethod`). +- The mask is per path, not per method bucket. This avoids the §5.3 sharded-vs-unsharded indexing overhead because no `% SHARDS` modulo is performed; method code is a numeric value already, used only inside the bit op. + +POC reproduction (`bench/poc-method-bitmask.ts`, 5 fresh-process runs, 100k routes × 1–4 methods/path): + +| Probe | Approach A (per-method tree iteration) | Approach B (per-path Map bitmask + popcount) | Approach C (per-path object bitmask + popcount) | +| ---------------------------------- | -------------------------------------: | -------------------------------------------: | ----------------------------------------------: | +| `allowedMethods(path)` × 100 cycle | 49.6–56.0 ns | **29.7–33.6 ns (1.57–1.71× faster)** | 31.0–39.0 ns (1.27–1.76× faster) | +| wrong-method check | 64.3–73.6 ns | **24.1–28.0 ns (2.63–2.95× faster)** | 36.8–45.5 ns (1.52–1.92× faster) | + +5-run is candidate-selection evidence; 30-run fresh-process gate required before final lock. Trend is consistent across 5 runs and matches §1 line 67 microbench rank (bitmask 2.18 ns < Set 3.43 ns). + +RED tests: + +- `allowedMethods('/x')` returns the same set as the existing implementation across 100k mixed-method routes. +- wrong-method `match('PUT', '/get-only-path')` returns `null` without dynamic walker entry (verified via `ROUTER_INTERNALS_KEY` walker invocation count). +- 33+ distinct methods registered should still emit `method-limit` (32-method bitmask invariant per §7.1 line 980). + +GREEN criteria: + +- `allowedMethods` p99 ≤ 30 ns at 100k mixed (from POC ≈30 ns Map B path; tighter than current ~50 ns). +- wrong-method p99 ≤ 30 ns (currently 396.23 ns per §5.1 line 488 cache-traversal feasibility table — bitmask AND should drop this by an order of magnitude on the static path). +- Build-time mask table cost ≤ 5 ns/route (one `mask |= (1 << mc)` per registered (method, path)). +- 32-method limit invariant preserved. + +Performance risk: + +- `Map` build cost is unmeasured at production-realistic shard size; covered by Phase 5b cross-reference. +- 64+ method P3 candidate (§7.1 line 985) requires `BigInt` mask or two `Uint32` masks; out of scope for default 32-method bitmask phase. + +§4 decision-state update on completion: `method availability via bitmask` row's `Next gate` column moves from "allowed-method/wrong-method tests and explicit >32 failure" to "30-run fresh-process gate on `100k mixed` allowedMethods + wrong-method p99". + +### Phase 6: Codegen Preflight And Telemetry + +Goal: + +- Avoid generating huge source only to bail out after cost has already been paid. + +Files: + +- `packages/router/src/codegen/segment-compile.ts` +- `packages/router/src/codegen/walker-strategy.ts` +- new `packages/router/src/codegen/codegen-budget.ts` + +Algorithm: + +- Add `estimateSegmentTreeCodegen(root)` returning node count, max fanout, estimated source bytes, tester count. +- Check budget before source construction. +- If over budget OR node count > **256 (default cap, requires build-time warmup mandatory)** OR > 64 (no-warmup p95-only cap), return fallback reason and use iterative walker. The cap is workload-tunable: see "Cap re-derivation (30-run × 100 sample)" below. +- **Build-time first-call warmup is MANDATORY** (locked per task 28 30-run × 100 sample = 3000 sample distribution): without warmup, first-call p99 fails Guard 10us at every node count including 16 nodes. With warmup, second-call p99 ≤ 10us holds up to 256 nodes. +- Warmup procedure: immediately after `new Function` returns, invoke the compiled walker with one synthetic input that exercises the deepest emitted branch. This triggers JSC JIT tier-up during build phase so user-facing first-match latency drops from "first-call" to "second-call" range. **For workloads where multiple distinct branches dominate, warmup must invoke N synthetic inputs (one per major branch) to ensure each branch's IC reaches tier-up; single-input warmup IC may not generalize**. +- **Hybrid first-match path**: routes ≤256 nodes use codegen + mandatory warmup (default); routes >256 nodes fall back to iterative walker. Iterative walker has stable per-segment cost (~26 ns according to §5.4 line 822 184.94 ns / 4 segments / 2 dispatches) without JIT tier-up cliffs. + +**Cap re-derivation (task 28: 30 fresh processes × 100 samples = 3000 samples per node count)**: + +| nodes | first-call p99 | first-call max | second-call p99 (warmed) | second-call p999 | second-call max | 10th-call p99 | +| ----: | -------------: | -------------: | -----------------------: | ---------------: | --------------: | ------------: | +| 16 | 16,081 ns | 26,603 ns | **1,596 ns** | 11,884 ns | 25,330 ns | 1,437 ns | +| 32 | 17,303 ns | 197,590 ns | **2,181 ns** | 17,921 ns | 38,461 ns | 1,490 ns | +| 64 | 63,066 ns | 169,121 ns | **3,010 ns** | 27,561 ns | 33,847 ns | 2,877 ns | +| 128 | 31,419 ns | 270,832 ns | **3,066 ns** | 50,917 ns | 95,189 ns | 3,597 ns | +| 256 | 20,846 ns | 347,966 ns | **3,605 ns** | 28,809 ns | 108,385 ns | 2,991 ns | + +Findings: + +- **first-call p99 fails Guard 10us at every node count tested (16–256)**. The earlier 5-run distribution (16-node first p99 = 759–7,373 ns) was an underestimate; 3000-sample distribution captures distribution-tail outliers (max 26–347 µs) that 500-sample distribution misses. Single-call codegen-only mode is not Guard-compliant. +- **second-call p99 ≤ 10 µs holds for all node counts up to 256**: 16-node 1.6 µs, 32-node 2.2 µs, 64-node 3.0 µs, 128-node 3.1 µs, 256-node 3.6 µs. With mandatory build-time warmup, the practical cap moves from the previous ≤32 lock to **≤256 nodes**. +- **second-call p999 still has outliers** (16-node 11.9 µs, 64-node 27.6 µs, 128-node 50.9 µs); p999 Guard would require larger budget headroom. p99 is the documented Guard. +- 10th-call p99 essentially matches second-call p99 (no further tier-up benefit beyond warmup). +- Aggressive 3 µs p99 (second-call): ≤32 nodes (32-node 2.2 µs ≤ 3 µs), 64-node 3.01 µs marginal fail. +- Stretch 1 µs p99 (second-call): 16-node 1.6 µs already fails — Stretch 1 µs unattainable even with warmup. + +**Default cap = 256 with mandatory warmup**. Strict mode (warmup unreliable for the workload, e.g. multi-branch hot routes) falls back to **≤64 nodes p95-only**, where first-call p95 ≤ 1,056 ns at 64 nodes is achievable and warmup is recommended but not required. The original ≤32 cap is superseded. + +The previous 5-run table is preserved below for traceability: + +| Run | 16-node first p99 | 64-node first p99 | 256-node first p99 | 1024-node first p99 | +| ----------------------: | ----------------: | ----------------: | -----------------: | ------------------: | +| 5-run median | 6,272 | 2,838 | 8,164 | 40,362 | +| 30-run × 100 sample p99 | 16,081 | 63,066 | 20,846 | (not measured) | + +5-run distribution understates first-call p99 by 2.6× (16-node) to 22× (64-node) compared to 3000-sample. Future cap derivations must use 30-run × 100 sample minimum. + +- Record optional telemetry in debug/profile mode. +- Compile time cannot be known before compilation. The `10 ms` limit is an observed telemetry gate: if exceeded, subsequent builds for the same shape disable codegen through budget heuristics or lower thresholds. +- Track JSC first-call/tier-up and generated function count in the gate output. +- Preflight accept/reject uses source estimate, node count, fanout, tester count, and prior telemetry for the same tree shape. Observed compile time is a post-compile gate, not a value that can be predicted exactly before compilation. + +Limits: + +- source max 128 KiB +- preferred source 64 KiB +- stretch source 32 KiB +- nodes max **32** (default — p99 Guard 10us via codegen+warmup, 5-run fresh-process median 64-node p99 = 2,838 ns) / **16** (p99-strict opt-in — single-run worst case ≤7,373 ns) / **64** (5-run-confirmed gate, requires re-measurement on target workload) / 4096 (legacy initial budget; not gate-passing). Routes whose tree exceeds the codegen budget are served by iterative walker plus build-time first-call warmup that triggers JIT tier-up before the router is exposed to user traffic. The original §5.3 D single-run 12,633 ns reading at 64 nodes is in the upper variance tail; 5-run distribution shows median Guard-passing. 30-run fresh-process re-measurement supersedes both. +- fanout max 64 +- observed compile max 10 ms per method; source/node/fanout limits are the pre-compile hard gate + +RED benchmark: + +- large tree codegen attempts source generation before bailing today. + +GREEN criteria: + +- No source string is built when estimate exceeds budget. +- first-match p99 improves or stays within Guard. +- compile telemetry appears in bench output. + +Performance risk: + +- Estimator must not become expensive. It must be O(nodes) and build-time only. + +### Phase 7: 100k Param Memory Breakdown And Compaction + +Goal: + +- Reduce the confirmed high RSS in `100k param`. + +Files: + +- `packages/router/src/matcher/segment-tree.ts` +- `packages/router/src/pipeline/registration.ts` +- `packages/router/src/pipeline/build.ts` +- `packages/router/src/codegen/params-factory.ts` if present or equivalent factory site + +Required profile before changes: + +- heap profile for `100k param` +- retained object counts for segment nodes, static child maps, terminal arrays, factory slots, unique factory functions, generated source, cache, and any retained closure environments +- owner chain for retained build-only structures: `Registration.snapshot`, static build maps, validation indexes, generated function/source references +- check whether generated source strings are retained after `new Function` + +Candidate order — **revised by task 9 internal counter + task 15 POC measurements** (`bench/poc-chain-compression.ts`, 3-run fresh-process): + +1. **single-chain compression for dynamic segment tree** (HIGHEST priority — measured 5.00× node count reduction, 2.26× RSS reduction, 1.77× faster miss, 1.24× slower hit but well within Guard). 100k param 698 MiB RSS → estimated 309 MiB, passes Guard 390.63 MiB. dominant by data: segment node 500,001 (50% of 1.0M retained objects). +2. **staticChildren single-child inline cache** (200,001 `Object.create(null)` instances; collapse single-child case into parent field). estimated 5–10% additional RSS reduction. +3. **ParamSegment SoA representation** (200,000 nodes; sibling chain → SoA arrays). estimated 3–5% reduction. +4. **terminal slab Int32Array** (100,000 × {handlerIdx, methodMask, paramFactoryIdx, optionsKeyHash} × 4 bytes = 1.6 MiB). low absolute, but eliminates JSC object overhead per terminal. The slab stores `optionsKeyHash: uint32` (FNV-1a or `Bun.hash(optionsKey) >>> 0`), not the original string `optionsKey: string` from §13 Phase 4 line 1954/1967 — strings stay in a separate `optionsKeyByHash: Map` for collision disambiguation. Two-stage representation: build emits `string` for diagnostic, slab carries `uint32` for hot-path `methodMask & (1 << mc)` adjacency. Collision rate at 100k options is negligible (FNV-1a 32-bit collision probability ≈ 1.16e-6 at 100k items per birthday bound). +5. **build-only structure discard** (already partially done via `Object.freeze(snapshot)` in registration.ts:242–252; verify nothing retains via closure). +6. **factory interning** — REJECTED for measured `100k param` shape (§5.1 unique factory count = 1; effect = 0). Re-measure only on shapes where `uniqueParamsFactoryCount > 1`. +7. **terminal aliasing for optional expansion** (per §11; verify on shapes with high optional expansion ratio). +8. **compact terminal metadata table** (TypedArray for terminal flags/method masks; covered by #4 slab). + +The previous order (factory interning first / static-chain compression last) was a blind-spot guess made before the heap profile and POC. Implementations following this revised order must re-verify with `ZIPBUL_ROUTER_DIAGNOSTICS=1` after each step to ensure expected reduction materializes; if not, profile retained-object owner chain before continuing. + +Decision rule: + +- Implement candidates in the revised order above; stop when RSS Guard 390.63 MiB is met. +- Do not replace object child lookup with packed scans unless end-to-end p99 proves it. +- Do not implement candidate 6 (factory interning) unless re-measurement on the target shape shows `uniqueParamsFactoryCount > 1`. + +GREEN criteria: + +- RSS per route moves under Guard target or improves by at least 25% without p99 regression. +- heapUsed per route improves or stays within target. +- dynamic hit/miss p99 remains within Guard. +- Cache eviction policy remains bounded after memory compaction: keep current clock-sweep hit cache and FIFO miss cache unless a replacement policy beats them on high-cardinality churn p75/p99 and retained memory. +- Any memory compaction that changes cache representation must restate the eviction algorithm in code and tests; prose-only eviction policy is not sufficient for Phase 7 approval. + +### Phase 8: External Baseline And Bun.serve Phase Split + +Goal: + +- Make superiority/comparison claims reproducible. + +Files: + +- `packages/router/bench/100k-external-baselines.ts` +- `packages/router/bench/100k-bun-serve-baseline.ts` + +Algorithm: + +- Add param/mixed/wildcard scenarios to external adapters where semantics support them. +- Verify exact value, params, wildcard capture, falsy value, wrong method. +- Split Bun.serve into route object prep, serve init, first request, warmed request. + +GREEN criteria: + +- Each baseline has version, adapter semantics, failure class, timeout, memory cap. +- Static-only baselines remain marked static-only. +- Bun.serve timeout is classified by phase, not by whole-harness timeout. + +### Phase 9: Final Gate And Release Decision + +Order: + +1. Run correctness/security suite. +2. Run `100k-gate-runner.ts` for all required shapes. +3. Run `100k mixed` phase profile. +4. Run heap profile for `100k param`. +5. Run external baselines. +6. Compare before/after against this document's target bands. + +Release can claim enterprise/extreme only if: + +- all P0 correctness/security tests pass +- no required 100k shape is missing +- mixed build passes Guard +- versioned-api build, RSS, first-match, warmed hit, miss, and wrong-method metrics pass Guard +- wildcard-heavy build, RSS, first-match, warmed hit, miss, and wrong-method metrics pass Guard +- param memory passes Guard or documented exception is accepted +- first-match p99 passes Guard +- warmed p99 passes Guard for static, param, wildcard, miss, wrong method +- external baseline caveats are documented + +--- + +## 14. Verification Gate + +이 문서를 “최고 계획”으로 확정하려면 아래 gate를 통과해야 한다. + +### 14.1. Environment Capture + +- `bun --version` +- CPU model, OS/kernel, architecture +- commit hash and dependency lock state +- benchmark warmup policy +- whether CPU/thermal governor is stable + +### 14.2. Correctness Gate + +필수 실패/성공 테스트: + +- custom valid method succeeds. +- empty/space/control/delimiter method fails. +- valid custom tokens such as `PROPFIND`, `PATCH+X`, `foo`, and `get` succeed as distinct methods. +- invalid tokens such as `GET POST`, `GET\t`, `GET/`, `GET:`, and `M\0` fail. +- method length boundary at 64 ASCII bytes and over-limit cases are tested. +- over-limit method emits `method-too-long`. +- method is case-sensitive. +- `GET` route does not match `get`. +- `get` may be registered only as a distinct valid custom token, not as an alias for `GET`. +- 32-method limit is enforced. +- invalid numeric limits and invalid secure/compat option combinations emit `option-invalid`. +- `maxRegexSiblingsPerSegment` is enforced; 33+ disjoint regex params at the same segment position emit `regex-sibling-limit` under the default limit. +- `maxExpandedRoutes` is enforced; total expanded routes above the configured cap emit `expansion-total-limit` before trie insertion. +- `HEAD` does not implicitly match `GET`. +- `OPTIONS` is not implicitly generated. +- registration query/fragment fails. +- control char path fails. +- raw non-ASCII path emits `path-non-ascii`. +- ASCII character outside the allowed path grammar emits `path-invalid-pchar`. +- Regex syntax without a preceding `:name`, such as `/x/(\\d+)`, emits `path-invalid-pchar`. +- full path longer than `maxPathLength` emits `path-too-long`. +- segment longer than `maxSegmentLength` emits `segment-too-long`. +- segment count above `maxSegmentCount` emits `segment-count-limit`. +- param count above `maxParams` emits `param-count-limit`. +- interior empty segment emits `path-empty-segment`. +- malformed `%` registration fails. +- runtime malformed encoded params no-match in secure/default. +- runtime fragment input no-matches in secure/default. +- encoded slash `%2F`, encoded control `%00`, invalid UTF-8, malformed `%`, encoded dot, and mixed dot forms no-match in secure/default. +- encoded control `%00` emits `path-encoded-control` in registration and no-matches in runtime secure/default. +- encoded slash `%2F` inside param or wildcard capture no-matches before capture materialization. +- literal `.` / `..`, encoded `%2e` / `%2e%2e`, and mixed forms `.%2e` / `%2e.` fail/no-match in secure/default. +- over-limit registered path/segment fails in secure/default mode. +- per-route optional explosion cap emits `optional-expansion-limit`. +- total optional expansion cap holds through `maxExpandedRoutes`. +- `/:a` then `/:b` under the same method emits `route-duplicate`. +- Same regex AST at the same segment, e.g. `/x/:r(\\d+)/a` and `/x/:r(\\d+)/b`, reuses one regex child and does not emit `route-conflict`. +- Repeating the exact same ordinary registration, e.g. `add('GET', '/foo', h)` twice, emits `route-duplicate` even if handler/options identity matches. +- `add('*', '/foo', h)` plus `add('GET', '/foo', h)` emits `route-duplicate` unless the duplicate concrete route came from optional expansion. +- Optional expansion alias terminal succeeds only when method, handler identity, and route options identity are identical; otherwise it emits `route-conflict`. +- `add('*', path, value)` expands only methods known before `seal()`; if `HEAD` is among those methods it gets its own concrete route, and `GET` still never implies `HEAD`. +- wildcard/static same-prefix collision emits `route-unreachable` regardless of registration order. +- wildcard/wildcard same-prefix collision emits `route-unreachable` for the later fully covered wildcard. +- regex safety uses the secure/default safe subset; compat native RegExp best-effort is excluded from enterprise/security claims. +- `route-duplicate` is covered by same method + same pattern and same normalized terminal fixtures that are not optional-expansion aliases. +- `route-conflict` is covered by plain param vs regex param same-shape fixtures and overlapping regex sibling fixtures. +- `param-duplicate` is covered by duplicate param name within one route pattern. +- `regex-unsafe` is covered by nested quantifier, backreference, lookaround, named capture, and unsafe wildcard regex fixtures. +- validation errors expose actionable kind/reason plus route index/path/method. +- caller mutation of returned params cannot poison cached params on repeated same-path lookup. + +### 14.3. Performance Gate + +Run at least 3 times and compare median/p75/p99: + +- route count: 10, 100, 1k, 10k, 100k +- shape: static, param, regex param, wildcard, optional, mixed API-like +- fanout: 1, 4, 16, 64, 256 +- path length: short, medium, long, deep slash, slash miss +- hit type: static hit, dynamic hit, wildcard hit, regex fail, 404, wrong method +- method: built-in, custom, 32-method limit, wrong method +- cache: hot repeated hit, cold first hit, miss, high-cardinality churn above `cacheSize`, static-heavy, dynamic-only cache, static-cache bypass +- normalization: case-sensitive, case-insensitive, trailing slash, query strip, percent decode +- runtime mode: cold first match, warmed loop, `Bun.serve` request path +- 100k target band: Guard / Aggressive / Stretch, derived from measurements +- build phase: parse, optional expansion, static insert, dynamic insert, wildcard conflict check, snapshot build, codegen +- codegen phase: node count, source bytes, compile ms, first-call ns, warmed ns +- static layout: method-first vs compact path-first including memory, allowed-method, wrong-method, and multi-method routes + +100k gate command policy: + +- `bun run bench` is not the 100k approval gate unless package scripts are updated to point at this matrix. +- The gate requires a fresh-process 3-run wrapper or JSON aggregation that records median/p75/p99. +- Required scenarios: static, param, mixed, high-fanout, versioned API-like, wildcard-heavy. +- If any required scenario is missing from the script, approval status is `not approved`. +- If a wildcard-heavy 100k scenario cannot be built without intentionally exceeding conflict semantics, the harness must report the maximum valid route count, reason, and substitute pass/fail threshold. + +Initial planning-band table: + +The initial planning bands in section 6 are provisional rejection budgets until replaced by a newer full-matrix baseline document. Empty metrics are `not approved`; final release approval requires refreshed full-matrix/profile data. + +### 14.4. External Baseline Gate + +Compare against: + +- current working router +- previous released/baseline router +- Bun native `Bun.serve({ routes })` +- `URLPattern` +- `find-my-way` +- `memoirist` +- `rou3` +- `hono` +- `koa-tree-router` + +Every baseline must be attempted at 100k routes. If it cannot build, cannot run, or exceeds practical memory/time limits, record that as a baseline result. + +Baseline correctness requirements: + +- hit returns exact registered value, including falsy values where supported +- param and wildcard captures match expected values +- wrong method behavior is comparable or explicitly documented +- lazy-build routers include first-match compile cost in a separate column or in build time +- static-only baseline results must not be generalized to dynamic/mixed/wildcard behavior + +### 14.5. Profile Gate + +Must collect: + +- mitata throughput and latency summaries +- `bun --cpu-prof` +- `bun --cpu-prof-interval` +- `bun --heap-prof` +- RSS / heapUsed / arrayBuffers +- build-time and after-first-match memory separately +- generated code size +- codegen compile time +- first-match latency +- object-count breakdown for 100k param memory +- retained build-only structures after snapshot publication +- Bun/JSC object shape and dictionary-mode risk evidence where observable +- huge object property lookup stability for 100k static buckets +- `Object.freeze` vs clone cost for params cache policy +- generated `new Function` count, source bytes, compile time, first-call latency, and code-cache pressure proxy +- code-cache pressure proxy is defined as generated function count, total emitted source bytes, compile wall time, first-call latency, process RSS delta after compile, and repeated compile/deopt symptoms observable through Bun/JSC profiling. There is no stable public Bun API that exposes JSC code cache occupancy directly, so this proxy is evidence for rejection/acceptance, not a byte-accurate code-cache measurement. + +Pass condition: + +- no correctness regression +- no unbounded memory behavior under high-cardinality paths +- static/dynamic/wildcard core routes remain at or above current throughput envelope +- memory optimizations show positive retained-memory reduction without unacceptable p75/p99 regression +- any candidate optimization must beat baseline end-to-end, not only microbench +- 100k route profile must pass before any “enterprise/extreme” claim is made + +Failure handling: + +- If correctness fails, performance results from that run are invalid. +- If a candidate improves mean ns/op but regresses p75/p99 materially, the candidate is rejected unless the workload explicitly accepts that trade-off. +- If a candidate lowers heap but raises RSS or arrayBuffers enough to hurt process density, it is not accepted as a memory win. +- If build time improves only by skipping validation or weakening diagnostics, it is rejected. +- If a cache optimization improves repeated same-path hot loops but worsens high-cardinality churn, it is not accepted as the default. +- If an external baseline cannot provide equivalent semantics, it is a reference point, not a superiority proof. + +Enterprise/extreme claim checklist: + +- Correctness gate passed. +- Security/default profile implemented and tested. +- Compat/unsafe opt-outs are explicit. +- 100k current/baseline/optimized comparisons exist for required shapes. +- 100k phase-level build profile exists. +- 100k memory profile includes `rss`, `heapUsed`, `arrayBuffers`, and object breakdown. +- Cache-hot, cold, churn, miss, wrong-method, and first-match latency are separated. +- External baselines include semantic caveats. +- All accepted optimizations have end-to-end evidence. +- All rejected optimizations have measured or architectural rejection reasons. + +Before/after baseline rule: + +- Historical pre-P0 measurements remain useful only to explain why work started. +- Final optimization before/after comparison must use the baseline after P0 correctness/security fixes and before performance optimizations. +- Allowed regression budget after P0 baseline: correctness 0 known regressions, warmed p99 <= 5% regression per core shape, first-match p99 <= 10% regression unless explicitly optimized later, build p99 <= 5% regression except where validation intentionally adds security work, RSS/heap/arrayBuffers <= 5% regression unless exchanged for documented security/correctness improvement. + +--- + +## 15. Final Decision + +Bun-only 극한 라우터를 만들기 위한 현재 최강 가설은 다음 한 문장으로 요약된다. + +**JSC가 잘 최적화하는 null-proto object lookup과 제한적 build-time codegen을 중심에 두고, GC와 heap pressure가 생기는 params/metadata/method availability만 Int32Array와 bit mask로 제거하는 hybrid router.** + +현재 근거상 최고 우선순위는 correctness/security defects를 먼저 제거하고, 그 다음 100k mixed build bottleneck, 100k param memory, `param factory double-call`, cache order, static table layout, codegen threshold, memory metadata compaction을 100k gate 기반으로 측정하는 것이다. + +반대로 SoA/TypedArray 전면 치환, Bun.hash 기반 hot path, TextEncoder byte routing, DataView node table, open-address hash child lookup, DFA/NFA 전환은 현재 근거상 최고 설계가 아니다. diff --git a/package.json b/package.json index 7c96f0d..35b1921 100644 --- a/package.json +++ b/package.json @@ -2,17 +2,30 @@ "name": "@zipbul/toolkit", "private": true, "license": "MIT", + "workspaces": [ + "packages/*" + ], "type": "module", - "workspaces": ["packages/*"], "scripts": { "changeset": "changeset", - "version-packages": "changeset version", - "release": "changeset publish" + "dpdm": "dpdm --no-warning --no-tree --exit-code circular:1 'packages/*/src/**/*.ts' 'packages/*/index.ts'", + "format": "oxfmt", + "format:check": "oxfmt --check", + "knip": "knip", + "lint": "oxlint --type-aware", + "release": "changeset publish", + "typecheck": "bunx tsc --noEmit", + "version-packages": "changeset version" }, "devDependencies": { "@changesets/cli": "^2.29.8", "@types/bun": "latest", - "fast-check": "^4.5.3" + "dpdm": "^4.2.0", + "fast-check": "^4.5.3", + "knip": "^6.14.1", + "oxfmt": "^0.50.0", + "oxlint": "^1.65.0", + "oxlint-tsgolint": "^0.22.1" }, "peerDependencies": { "typescript": "^5" diff --git a/packages/cors/CHANGELOG.md b/packages/cors/CHANGELOG.md index d717e07..7380fab 100644 --- a/packages/cors/CHANGELOG.md +++ b/packages/cors/CHANGELOG.md @@ -34,7 +34,6 @@ ### Patch Changes - 665e37c: chore: quality audit across all public packages - - Add `sideEffects: false` and `publishConfig.provenance` to all packages - Add `.npmignore` to all packages - Expand npm keywords for better discoverability @@ -52,14 +51,12 @@ ### Minor Changes - 7e67e78: ### Breaking Changes - - `Cors.create()` now returns `Cors` directly and throws `CorsError` on invalid options (previously returned `Result`) - `Cors.handle()` now returns `Promise` and throws `CorsError` on origin function failure (previously returned `Promise>`) - `CorsError` is now a class extending `Error` (previously an interface) - New `CorsErrorData` interface replaces the old `CorsError` interface shape (internal use) ### @zipbul/shared - - `HttpHeader` and `HttpStatus` changed from `const enum` to `enum` to fix `verbatimModuleSyntax` compatibility ### Why minor (not major) @@ -70,17 +67,17 @@ ```typescript // Before - import { isErr } from "@zipbul/result"; - const result = Cors.create({ origin: "https://example.com" }); + import { isErr } from '@zipbul/result'; + const result = Cors.create({ origin: 'https://example.com' }); if (isErr(result)) { /* handle error */ } const cors = result; // After - import { CorsError } from "@zipbul/cors"; + import { CorsError } from '@zipbul/cors'; try { - const cors = Cors.create({ origin: "https://example.com" }); + const cors = Cors.create({ origin: 'https://example.com' }); } catch (e) { if (e instanceof CorsError) { /* handle error */ diff --git a/packages/cors/README.ko.md b/packages/cors/README.ko.md index 524c155..9dd90b1 100644 --- a/packages/cors/README.ko.md +++ b/packages/cors/README.ko.md @@ -80,28 +80,28 @@ async function handleRequest(request: Request): Promise { ```typescript interface CorsOptions { - origin?: OriginOptions; // 기본값: '*' - methods?: HttpMethod[]; // 기본값: GET, HEAD, PUT, PATCH, POST, DELETE - allowedHeaders?: string[]; // 기본값: 요청의 ACRH 반영 - exposedHeaders?: string[]; // 기본값: 없음 - credentials?: boolean; // 기본값: false - maxAge?: number; // 기본값: 없음 (헤더 미포함) - preflightContinue?: boolean; // 기본값: false - optionsSuccessStatus?: number; // 기본값: 204 + origin?: OriginOptions; // 기본값: '*' + methods?: HttpMethod[]; // 기본값: GET, HEAD, PUT, PATCH, POST, DELETE + allowedHeaders?: string[]; // 기본값: 요청의 ACRH 반영 + exposedHeaders?: string[]; // 기본값: 없음 + credentials?: boolean; // 기본값: false + maxAge?: number; // 기본값: 없음 (헤더 미포함) + preflightContinue?: boolean; // 기본값: false + optionsSuccessStatus?: number; // 기본값: 204 } ``` ### `origin` -| 값 | 동작 | -|:---|:---| -| `'*'` _(기본)_ | 모든 출처 허용 | -| `false` | 모든 출처 거부 | -| `true` | 요청 출처를 그대로 반영 | -| `'https://example.com'` | 정확히 일치하는 출처만 허용 | -| `/^https:\/\/(.+\.)?example\.com$/` | 정규식 매칭 | -| `['https://a.com', /^https:\/\/b\./]` | 배열 (문자열·정규식 혼합) | -| `(origin, request) => boolean \| string` | 함수 (동기·비동기) | +| 값 | 동작 | +| :--------------------------------------- | :-------------------------- | +| `'*'` _(기본)_ | 모든 출처 허용 | +| `false` | 모든 출처 거부 | +| `true` | 요청 출처를 그대로 반영 | +| `'https://example.com'` | 정확히 일치하는 출처만 허용 | +| `/^https:\/\/(.+\.)?example\.com$/` | 정규식 매칭 | +| `['https://a.com', /^https:\/\/b\./]` | 배열 (문자열·정규식 혼합) | +| `(origin, request) => boolean \| string` | 함수 (동기·비동기) | > `credentials: true`일 때 `origin: '*'`는 **검증 오류**를 발생시킵니다. 요청 출처를 반영하려면 `origin: true`를 사용하세요. > @@ -175,7 +175,10 @@ Cors.create({ maxAge: 86400 }); // 24시간 #### `CorsContinueResult` ```typescript -{ action: CorsAction.Continue; headers: Headers } +{ + action: CorsAction.Continue; + headers: Headers; +} ``` 일반 요청(비-OPTIONS) 또는 `preflightContinue: true`인 프리플라이트에서 반환됩니다. `headers`를 응답에 직접 병합하세요. @@ -183,7 +186,11 @@ Cors.create({ maxAge: 86400 }); // 24시간 #### `CorsPreflightResult` ```typescript -{ action: CorsAction.RespondPreflight; headers: Headers; statusCode: number } +{ + action: CorsAction.RespondPreflight; + headers: Headers; + statusCode: number; +} ``` `OPTIONS` + `Access-Control-Request-Method`가 포함된 프리플라이트에서 반환됩니다. `headers`와 `statusCode`를 사용하여 응답을 직접 구성합니다. @@ -191,31 +198,34 @@ Cors.create({ maxAge: 86400 }); // 24시간 #### `CorsRejectResult` ```typescript -{ action: CorsAction.Reject; reason: CorsRejectionReason } +{ + action: CorsAction.Reject; + reason: CorsRejectionReason; +} ``` CORS 검증 실패 시 반환됩니다. `reason`으로 상세한 에러 응답을 구성할 수 있습니다. -| `CorsRejectionReason` | 의미 | -|:---|:---| -| `NoOrigin` | `Origin` 헤더 없음 또는 빈 문자열 | -| `OriginNotAllowed` | 출처가 허용 목록에 없음 | -| `MethodNotAllowed` | 요청 메서드가 허용 목록에 없음 | -| `HeaderNotAllowed` | 요청 헤더가 허용 목록에 없음 | +| `CorsRejectionReason` | 의미 | +| :-------------------- | :-------------------------------- | +| `NoOrigin` | `Origin` 헤더 없음 또는 빈 문자열 | +| `OriginNotAllowed` | 출처가 허용 목록에 없음 | +| `MethodNotAllowed` | 요청 메서드가 허용 목록에 없음 | +| `HeaderNotAllowed` | 요청 헤더가 허용 목록에 없음 | `Cors.create()`는 옵션 검증 실패 시 `CorsError`를 throw합니다: -| `CorsErrorReason` | 의미 | -|:------------------|:--------| -| `CredentialsWithWildcardOrigin` | `credentials:true` + `origin:'*'` 조합 불가 (Fetch Standard §3.3.5) | -| `InvalidMaxAge` | `maxAge`가 음수가 아닌 정수가 아님 (RFC 9111 §1.2.1) | -| `InvalidStatusCode` | `optionsSuccessStatus`가 2xx 정수가 아님 | -| `InvalidOrigin` | `origin`이 빈/공백 문자열, 빈 배열, 또는 배열 내 빈/공백 요소 (RFC 6454) | -| `InvalidMethods` | `methods`가 빈 배열이거나 빈/공백 요소 포함 (RFC 9110 §5.6.2) | -| `InvalidAllowedHeaders` | `allowedHeaders`에 빈/공백 요소 포함 (RFC 9110 §5.6.2) | -| `InvalidExposedHeaders` | `exposedHeaders`에 빈/공백 요소 포함 (RFC 9110 §5.6.2) | -| `OriginFunctionError` | 런타임에 origin 함수가 예외를 오발 | -| `UnsafeRegExp` | origin RegExp이 지수적 역추적 위험(ReDoS)을 가짐 | +| `CorsErrorReason` | 의미 | +| :------------------------------ | :----------------------------------------------------------------------- | +| `CredentialsWithWildcardOrigin` | `credentials:true` + `origin:'*'` 조합 불가 (Fetch Standard §3.3.5) | +| `InvalidMaxAge` | `maxAge`가 음수가 아닌 정수가 아님 (RFC 9111 §1.2.1) | +| `InvalidStatusCode` | `optionsSuccessStatus`가 2xx 정수가 아님 | +| `InvalidOrigin` | `origin`이 빈/공백 문자열, 빈 배열, 또는 배열 내 빈/공백 요소 (RFC 6454) | +| `InvalidMethods` | `methods`가 빈 배열이거나 빈/공백 요소 포함 (RFC 9110 §5.6.2) | +| `InvalidAllowedHeaders` | `allowedHeaders`에 빈/공백 요소 포함 (RFC 9110 §5.6.2) | +| `InvalidExposedHeaders` | `exposedHeaders`에 빈/공백 요소 포함 (RFC 9110 §5.6.2) | +| `OriginFunctionError` | 런타임에 origin 함수가 예외를 오발 | +| `UnsafeRegExp` | origin RegExp이 지수적 역추적 위험(ReDoS)을 가짐 |
@@ -229,11 +239,7 @@ Cors.create({ origin: 'https://app.example.com' }); // 여러 출처 (문자열 + 정규식 혼합) Cors.create({ - origin: [ - 'https://app.example.com', - 'https://admin.example.com', - /^https:\/\/preview-\d+\.example\.com$/, - ], + origin: ['https://app.example.com', 'https://admin.example.com', /^https:\/\/preview-\d+\.example\.com$/], }); // 정규식으로 서브도메인 전체 허용 @@ -265,12 +271,12 @@ Cors.create({ Fetch Standard에 따라 인증 요청(쿠키·`Authorization`)에는 와일드카드(`*`)를 사용할 수 없습니다. `credentials: true`일 때 라이브러리가 자동으로 처리하는 항목은 다음과 같습니다. -| 옵션 | 와일드카드 시 동작 | -|:---|:---| -| `origin: '*'` | **검증 오류** — `origin: true`를 사용하여 요청 출처를 반영하세요 | -| `methods: ['*']` | 요청 메서드를 그대로 반영 | -| `allowedHeaders: ['*']` | 요청 헤더를 그대로 반영 | -| `exposedHeaders: ['*']` | `Access-Control-Expose-Headers` 미설정 | +| 옵션 | 와일드카드 시 동작 | +| :---------------------- | :--------------------------------------------------------------- | +| `origin: '*'` | **검증 오류** — `origin: true`를 사용하여 요청 출처를 반영하세요 | +| `methods: ['*']` | 요청 메서드를 그대로 반영 | +| `allowedHeaders: ['*']` | 요청 헤더를 그대로 반영 | +| `exposedHeaders: ['*']` | `Access-Control-Expose-Headers` 미설정 | ```typescript // ✅ origin: true + credentials: true → 요청 origin 자동 반영 @@ -329,10 +335,10 @@ Bun.serve({ const result = await cors.handle(request); if (result.action === CorsAction.Reject) { - return new Response( - JSON.stringify({ error: 'CORS policy violation', reason: result.reason }), - { status: 403, headers: { 'Content-Type': 'application/json' } }, - ); + return new Response(JSON.stringify({ error: 'CORS policy violation', reason: result.reason }), { + status: 403, + headers: { 'Content-Type': 'application/json' }, + }); } if (result.action === CorsAction.RespondPreflight) { diff --git a/packages/cors/README.md b/packages/cors/README.md index fdfb04e..e5896c3 100644 --- a/packages/cors/README.md +++ b/packages/cors/README.md @@ -80,28 +80,28 @@ async function handleRequest(request: Request): Promise { ```typescript interface CorsOptions { - origin?: OriginOptions; // Default: '*' - methods?: HttpMethod[]; // Default: GET, HEAD, PUT, PATCH, POST, DELETE - allowedHeaders?: string[]; // Default: reflects request's ACRH - exposedHeaders?: string[]; // Default: none - credentials?: boolean; // Default: false - maxAge?: number; // Default: none (header not included) - preflightContinue?: boolean; // Default: false - optionsSuccessStatus?: number; // Default: 204 + origin?: OriginOptions; // Default: '*' + methods?: HttpMethod[]; // Default: GET, HEAD, PUT, PATCH, POST, DELETE + allowedHeaders?: string[]; // Default: reflects request's ACRH + exposedHeaders?: string[]; // Default: none + credentials?: boolean; // Default: false + maxAge?: number; // Default: none (header not included) + preflightContinue?: boolean; // Default: false + optionsSuccessStatus?: number; // Default: 204 } ``` ### `origin` -| Value | Behavior | -|:------|:---------| -| `'*'` _(default)_ | Allow all origins | -| `false` | Reject all origins | -| `true` | Reflect the request origin | -| `'https://example.com'` | Allow only the exact match | -| `/^https:\/\/(.+\.)?example\.com$/` | Regex matching | -| `['https://a.com', /^https:\/\/b\./]` | Array (mix of strings and regexes) | -| `(origin, request) => boolean \| string` | Function (sync or async) | +| Value | Behavior | +| :--------------------------------------- | :--------------------------------- | +| `'*'` _(default)_ | Allow all origins | +| `false` | Reject all origins | +| `true` | Reflect the request origin | +| `'https://example.com'` | Allow only the exact match | +| `/^https:\/\/(.+\.)?example\.com$/` | Regex matching | +| `['https://a.com', /^https:\/\/b\./]` | Array (mix of strings and regexes) | +| `(origin, request) => boolean \| string` | Function (sync or async) | > When `credentials: true`, `origin: '*'` causes a **validation error**. Use `origin: true` to reflect the request origin. > @@ -175,7 +175,10 @@ HTTP status code for the preflight response. Defaults to `204`. Set to `200` if #### `CorsContinueResult` ```typescript -{ action: CorsAction.Continue; headers: Headers } +{ + action: CorsAction.Continue; + headers: Headers; +} ``` Returned for normal (non-OPTIONS) requests, or preflight when `preflightContinue: true`. Merge `headers` into your response directly. @@ -183,7 +186,11 @@ Returned for normal (non-OPTIONS) requests, or preflight when `preflightContinue #### `CorsPreflightResult` ```typescript -{ action: CorsAction.RespondPreflight; headers: Headers; statusCode: number } +{ + action: CorsAction.RespondPreflight; + headers: Headers; + statusCode: number; +} ``` Returned for `OPTIONS` requests that include `Access-Control-Request-Method`. Use `headers` and `statusCode` to build a response. @@ -191,31 +198,34 @@ Returned for `OPTIONS` requests that include `Access-Control-Request-Method`. Us #### `CorsRejectResult` ```typescript -{ action: CorsAction.Reject; reason: CorsRejectionReason } +{ + action: CorsAction.Reject; + reason: CorsRejectionReason; +} ``` Returned when CORS validation fails. Use `reason` to build a detailed error response. -| `CorsRejectionReason` | Meaning | -|:-----------------------|:--------| -| `NoOrigin` | `Origin` header missing or empty | -| `OriginNotAllowed` | Origin not in the allowed list | -| `MethodNotAllowed` | Request method not in the allowed list | -| `HeaderNotAllowed` | Request header not in the allowed list | +| `CorsRejectionReason` | Meaning | +| :-------------------- | :------------------------------------- | +| `NoOrigin` | `Origin` header missing or empty | +| `OriginNotAllowed` | Origin not in the allowed list | +| `MethodNotAllowed` | Request method not in the allowed list | +| `HeaderNotAllowed` | Request header not in the allowed list | `Cors.create()` throws `CorsError` when options fail validation: -| `CorsErrorReason` | Meaning | -|:------------------|:--------| -| `CredentialsWithWildcardOrigin` | `credentials:true` with `origin:'*'` (Fetch Standard §3.3.5) | -| `InvalidMaxAge` | `maxAge` is not a non-negative integer (RFC 9111 §1.2.1) | -| `InvalidStatusCode` | `optionsSuccessStatus` is not a 2xx integer | -| `InvalidOrigin` | `origin` is an empty/blank string, empty array, or array with empty/blank entries (RFC 6454) | -| `InvalidMethods` | `methods` is empty, or contains empty/blank entries (RFC 9110 §5.6.2) | -| `InvalidAllowedHeaders` | `allowedHeaders` contains empty/blank entries (RFC 9110 §5.6.2) | -| `InvalidExposedHeaders` | `exposedHeaders` contains empty/blank entries (RFC 9110 §5.6.2) | -| `OriginFunctionError` | Origin function threw at runtime | -| `UnsafeRegExp` | origin RegExp has exponential backtracking risk (ReDoS) | +| `CorsErrorReason` | Meaning | +| :------------------------------ | :------------------------------------------------------------------------------------------- | +| `CredentialsWithWildcardOrigin` | `credentials:true` with `origin:'*'` (Fetch Standard §3.3.5) | +| `InvalidMaxAge` | `maxAge` is not a non-negative integer (RFC 9111 §1.2.1) | +| `InvalidStatusCode` | `optionsSuccessStatus` is not a 2xx integer | +| `InvalidOrigin` | `origin` is an empty/blank string, empty array, or array with empty/blank entries (RFC 6454) | +| `InvalidMethods` | `methods` is empty, or contains empty/blank entries (RFC 9110 §5.6.2) | +| `InvalidAllowedHeaders` | `allowedHeaders` contains empty/blank entries (RFC 9110 §5.6.2) | +| `InvalidExposedHeaders` | `exposedHeaders` contains empty/blank entries (RFC 9110 §5.6.2) | +| `OriginFunctionError` | Origin function threw at runtime | +| `UnsafeRegExp` | origin RegExp has exponential backtracking risk (ReDoS) |
@@ -229,11 +239,7 @@ Cors.create({ origin: 'https://app.example.com' }); // Multiple origins (mix of strings and regexes) Cors.create({ - origin: [ - 'https://app.example.com', - 'https://admin.example.com', - /^https:\/\/preview-\d+\.example\.com$/, - ], + origin: ['https://app.example.com', 'https://admin.example.com', /^https:\/\/preview-\d+\.example\.com$/], }); // Regex to allow all subdomains @@ -265,12 +271,12 @@ Cors.create({ Per the Fetch Standard, wildcards (`*`) cannot be used with credentialed requests (cookies, `Authorization`). When `credentials: true`, the library automatically handles the following: -| Option | Behavior with wildcard | -|:-------|:-----------------------| -| `origin: '*'` | **Validation error** — use `origin: true` to reflect the request origin | -| `methods: ['*']` | Echoes the request method | -| `allowedHeaders: ['*']` | Echoes the request headers | -| `exposedHeaders: ['*']` | `Access-Control-Expose-Headers` is not set | +| Option | Behavior with wildcard | +| :---------------------- | :---------------------------------------------------------------------- | +| `origin: '*'` | **Validation error** — use `origin: true` to reflect the request origin | +| `methods: ['*']` | Echoes the request method | +| `allowedHeaders: ['*']` | Echoes the request headers | +| `exposedHeaders: ['*']` | `Access-Control-Expose-Headers` is not set | ```typescript // ✅ origin: true + credentials: true → request origin is reflected @@ -329,10 +335,10 @@ Bun.serve({ const result = await cors.handle(request); if (result.action === CorsAction.Reject) { - return new Response( - JSON.stringify({ error: 'CORS policy violation', reason: result.reason }), - { status: 403, headers: { 'Content-Type': 'application/json' } }, - ); + return new Response(JSON.stringify({ error: 'CORS policy violation', reason: result.reason }), { + status: 403, + headers: { 'Content-Type': 'application/json' }, + }); } if (result.action === CorsAction.RespondPreflight) { diff --git a/packages/cors/bunfig.toml b/packages/cors/bunfig.toml index cf68672..2fc59aa 100644 --- a/packages/cors/bunfig.toml +++ b/packages/cors/bunfig.toml @@ -3,12 +3,7 @@ onlyFailures = true coverage = true coverageReporter = ["text", "lcov"] coverageThreshold = 0.95 -coveragePathIgnorePatterns = [ - "node_modules/**", - "dist/**", - "../shared/**", - "../result/**" -] +coveragePathIgnorePatterns = ["node_modules/**", "dist/**", "../shared/**", "../result/**"] [test.reporter] -dots = true \ No newline at end of file +dots = true diff --git a/packages/cors/index.ts b/packages/cors/index.ts index 4524995..c114120 100644 --- a/packages/cors/index.ts +++ b/packages/cors/index.ts @@ -1,11 +1,5 @@ export { Cors } from './src/cors'; export { CorsAction, CorsRejectionReason, CorsErrorReason } from './src/enums'; export { CorsError } from './src/interfaces'; -export type { - CorsOptions, - CorsErrorData, - CorsContinueResult, - CorsPreflightResult, - CorsRejectResult, -} from './src/interfaces'; +export type { CorsOptions, CorsErrorData, CorsContinueResult, CorsPreflightResult, CorsRejectResult } from './src/interfaces'; export type { CorsResult, OriginFn, OriginOptions } from './src/types'; diff --git a/packages/cors/package.json b/packages/cors/package.json index 693a278..60a0d6a 100644 --- a/packages/cors/package.json +++ b/packages/cors/package.json @@ -2,31 +2,32 @@ "name": "@zipbul/cors", "version": "0.1.4", "description": "Framework-agnostic CORS library for standard Web APIs (Request/Response)", - "license": "MIT", - "author": "Junhyung Park (https://github.com/parkrevil)", - "repository": { - "type": "git", - "url": "https://github.com/zipbul/toolkit", - "directory": "packages/cors" - }, - "bugs": "https://github.com/zipbul/toolkit/issues", - "homepage": "https://github.com/zipbul/toolkit/tree/main/packages/cors#readme", "keywords": [ + "bun", "cors", "cross-origin", - "preflight", - "http", "fetch", - "web-api", - "bun", + "http", "middleware", + "preflight", "typescript", + "web-api", "zipbul" ], - "engines": { - "bun": ">=1.0.0" + "homepage": "https://github.com/zipbul/toolkit/tree/main/packages/cors#readme", + "bugs": "https://github.com/zipbul/toolkit/issues", + "license": "MIT", + "author": "Junhyung Park (https://github.com/parkrevil)", + "repository": { + "type": "git", + "url": "https://github.com/zipbul/toolkit", + "directory": "packages/cors" }, + "files": [ + "dist" + ], "type": "module", + "sideEffects": false, "module": "dist/index.js", "types": "dist/index.d.ts", "exports": { @@ -35,21 +36,20 @@ "import": "./dist/index.js" } }, - "files": [ - "dist" - ], - "sideEffects": false, "publishConfig": { "provenance": true }, "scripts": { "build": "bun build index.ts --outdir dist --target bun --format esm --packages external --production && tsc -p tsconfig.build.json", - "test": "bun test", - "coverage": "bun test --coverage" + "coverage": "bun test --coverage", + "test": "bun test" }, "dependencies": { "@zipbul/result": "workspace:*", "@zipbul/shared": "workspace:*", "safe-regex2": "^5.0.0" + }, + "engines": { + "bun": ">=1.0.0" } } diff --git a/packages/cors/src/constants.ts b/packages/cors/src/constants.ts index b49ee90..1bc321c 100644 --- a/packages/cors/src/constants.ts +++ b/packages/cors/src/constants.ts @@ -1,12 +1,5 @@ import { HttpStatus } from '@zipbul/shared'; -export const CORS_DEFAULT_METHODS: string[] = [ - 'GET', - 'HEAD', - 'PUT', - 'PATCH', - 'POST', - 'DELETE', -]; +export const CORS_DEFAULT_METHODS: string[] = ['GET', 'HEAD', 'PUT', 'PATCH', 'POST', 'DELETE']; export const CORS_DEFAULT_OPTIONS_SUCCESS_STATUS = HttpStatus.NoContent; diff --git a/packages/cors/src/cors.spec.ts b/packages/cors/src/cors.spec.ts index 74af008..8aef165 100644 --- a/packages/cors/src/cors.spec.ts +++ b/packages/cors/src/cors.spec.ts @@ -1,37 +1,22 @@ +import { HttpHeader } from '@zipbul/shared'; import { describe, expect, it, mock } from 'bun:test'; -import { HttpHeader, HttpStatus } from '@zipbul/shared'; - -import { CorsAction, CorsErrorReason, CorsRejectionReason } from './enums'; -import { - CorsError, -} from './interfaces'; -import type { - CorsContinueResult, - CorsOptions, - CorsPreflightResult, - CorsRejectResult, -} from './interfaces'; +import type { CorsContinueResult, CorsPreflightResult, CorsRejectResult } from './interfaces'; import type { CorsResult } from './types'; + import { Cors } from './cors'; +import { CorsAction, CorsErrorReason, CorsRejectionReason } from './enums'; +import { CorsError } from './interfaces'; // ── helpers ── -function makeRequest( - method: string, - origin?: string, - headers?: Record, -): Request { +function makeRequest(method: string, origin?: string, headers?: Record): Request { const h: Record = { ...headers }; - if (origin !== undefined) h[HttpHeader.Origin] = origin; + if (origin !== undefined) {h[HttpHeader.Origin] = origin;} return new Request('http://localhost', { method, headers: h }); } -function makePreflight( - origin: string, - requestMethod: string, - requestHeaders?: string, -): Request { +function makePreflight(origin: string, requestMethod: string, requestHeaders?: string): Request { const h: Record = { [HttpHeader.Origin]: origin, [HttpHeader.AccessControlRequestMethod]: requestMethod, @@ -289,7 +274,11 @@ describe('Cors', () => { it('should throw CorsError when OriginFn throws', async () => { // Arrange - const cors = Cors.create({ origin: () => { throw new Error('boom'); } }); + const cors = Cors.create({ + origin: () => { + throw new Error('boom'); + }, + }); const req = makeRequest('GET', 'https://a.com'); // Act / Assert let caught: unknown; diff --git a/packages/cors/src/cors.ts b/packages/cors/src/cors.ts index 6ba5e67..a778d68 100644 --- a/packages/cors/src/cors.ts +++ b/packages/cors/src/cors.ts @@ -1,13 +1,15 @@ -import { HttpHeader } from '@zipbul/shared'; -import { isErr, safe } from '@zipbul/result'; import type { ResultAsync } from '@zipbul/result'; +import { isErr, safe } from '@zipbul/result'; +import { HttpHeader } from '@zipbul/shared'; + +import type { CorsErrorData, CorsOptions, CorsRejectResult } from './interfaces'; +import type { CorsResult, ResolvedCorsOptions } from './types'; +import type { OriginResult } from './types'; + import { CorsAction, CorsErrorReason, CorsRejectionReason } from './enums'; import { CorsError } from './interfaces'; -import type { CorsErrorData, CorsOptions, CorsPreflightResult, CorsRejectResult } from './interfaces'; import { resolveCorsOptions, validateCorsOptions } from './options'; -import type { CorsResult, ResolvedCorsOptions } from './types'; -import type { OriginResult } from './types'; /** * Framework-agnostic CORS handler. diff --git a/packages/cors/src/options.spec.ts b/packages/cors/src/options.spec.ts index 7e2525d..340d5dc 100644 --- a/packages/cors/src/options.spec.ts +++ b/packages/cors/src/options.spec.ts @@ -1,9 +1,10 @@ import { describe, expect, it } from 'bun:test'; +import type { ResolvedCorsOptions } from './types'; + import { CORS_DEFAULT_METHODS, CORS_DEFAULT_OPTIONS_SUCCESS_STATUS } from './constants'; import { CorsErrorReason } from './enums'; import { resolveCorsOptions, validateCorsOptions } from './options'; -import type { ResolvedCorsOptions } from './types'; describe('resolveCorsOptions', () => { it('should return all defaults when called without arguments', () => { diff --git a/packages/cors/src/options.ts b/packages/cors/src/options.ts index 501b002..815d34b 100644 --- a/packages/cors/src/options.ts +++ b/packages/cors/src/options.ts @@ -1,12 +1,14 @@ -import { err } from '@zipbul/result'; import type { Result } from '@zipbul/result'; + +import { err } from '@zipbul/result'; import safe from 'safe-regex2'; -import { CORS_DEFAULT_METHODS, CORS_DEFAULT_OPTIONS_SUCCESS_STATUS } from './constants'; -import { CorsErrorReason } from './enums'; import type { CorsErrorData, CorsOptions } from './interfaces'; import type { ResolvedCorsOptions } from './types'; +import { CORS_DEFAULT_METHODS, CORS_DEFAULT_OPTIONS_SUCCESS_STATUS } from './constants'; +import { CorsErrorReason } from './enums'; + /** * Takes partial {@link CorsOptions} and fills in every missing field with a * sensible default, returning a fully populated {@link ResolvedCorsOptions}. @@ -20,9 +22,7 @@ import type { ResolvedCorsOptions } from './types'; export function resolveCorsOptions(options?: CorsOptions): ResolvedCorsOptions { return { origin: options?.origin ?? '*', - methods: options?.methods?.includes('*') - ? ['*'] - : (options?.methods ?? CORS_DEFAULT_METHODS).map(m => m.toUpperCase()), + methods: options?.methods?.includes('*') ? ['*'] : (options?.methods ?? CORS_DEFAULT_METHODS).map(m => m.toUpperCase()), allowedHeaders: options?.allowedHeaders ?? null, exposedHeaders: options?.exposedHeaders ?? null, credentials: options?.credentials ?? false, @@ -135,7 +135,11 @@ export function validateCorsOptions(resolved: ResolvedCorsOptions): Result 299) { + if ( + !Number.isInteger(resolved.optionsSuccessStatus) || + resolved.optionsSuccessStatus < 200 || + resolved.optionsSuccessStatus > 299 + ) { return err({ reason: CorsErrorReason.InvalidStatusCode, message: 'optionsSuccessStatus must be a 2xx integer status code (200–299)', diff --git a/packages/cors/test/cors.test.ts b/packages/cors/test/cors.test.ts index e495fe1..7ff0903 100644 --- a/packages/cors/test/cors.test.ts +++ b/packages/cors/test/cors.test.ts @@ -1,13 +1,9 @@ +import { HttpHeader } from '@zipbul/shared'; import { describe, expect, it } from 'bun:test'; -import { HttpHeader } from '@zipbul/shared'; +import type { CorsContinueResult, CorsPreflightResult, CorsRejectResult } from '../index'; import { Cors, CorsAction, CorsError, CorsErrorReason, CorsRejectionReason } from '../index'; -import type { - CorsContinueResult, - CorsPreflightResult, - CorsRejectResult, -} from '../index'; describe('Cors integration', () => { it('should handle full GET flow: create → handle → inspect headers', async () => { @@ -18,7 +14,7 @@ describe('Cors integration', () => { headers: { [HttpHeader.Origin]: 'https://a.com' }, }); // Act - const result = await cors.handle(req) as CorsContinueResult; + const result = (await cors.handle(req)) as CorsContinueResult; // Assert expect(result.action).toBe(CorsAction.Continue); expect(result.headers.get(HttpHeader.AccessControlAllowOrigin)).toBe('*'); @@ -40,7 +36,7 @@ describe('Cors integration', () => { }, }); // Act - const result = await cors.handle(req) as CorsPreflightResult; + const result = (await cors.handle(req)) as CorsPreflightResult; // Assert expect(result.action).toBe(CorsAction.RespondPreflight); expect(result.statusCode).toBe(204); @@ -63,7 +59,9 @@ describe('Cors integration', () => { it('should throw CorsError when OriginFn throws at runtime', async () => { // Arrange const cors = Cors.create({ - origin: () => { throw new Error('runtime failure'); }, + origin: () => { + throw new Error('runtime failure'); + }, }); const req = new Request('http://localhost', { method: 'GET', @@ -88,7 +86,7 @@ describe('Cors integration', () => { headers: { [HttpHeader.Origin]: 'https://a.com' }, }); // Act - const result = await cors.handle(req) as CorsRejectResult; + const result = (await cors.handle(req)) as CorsRejectResult; // Assert expect(result.action).toBe(CorsAction.Reject); expect(result.reason).toBe(CorsRejectionReason.OriginNotAllowed); @@ -105,7 +103,7 @@ describe('Cors integration', () => { }, }); // Act - const result = await cors.handle(req) as CorsContinueResult; + const result = (await cors.handle(req)) as CorsContinueResult; // Assert expect(result.action).toBe(CorsAction.Continue); expect(result.headers.has(HttpHeader.AccessControlAllowMethods)).toBe(true); @@ -119,7 +117,7 @@ describe('Cors integration', () => { headers: { [HttpHeader.Origin]: 'https://a.com' }, }); // Act - const result = await cors.handle(req) as CorsContinueResult; + const result = (await cors.handle(req)) as CorsContinueResult; // Assert expect(result.action).toBe(CorsAction.Continue); expect(result.headers.get(HttpHeader.AccessControlExposeHeaders)).toBe('X-Request-Id'); diff --git a/packages/cors/tsconfig.json b/packages/cors/tsconfig.json index 9ff6070..4082f16 100644 --- a/packages/cors/tsconfig.json +++ b/packages/cors/tsconfig.json @@ -1,4 +1,3 @@ { "extends": "../../tsconfig.json" } - diff --git a/packages/multipart/README.ko.md b/packages/multipart/README.ko.md index 514ceab..e81e625 100644 --- a/packages/multipart/README.ko.md +++ b/packages/multipart/README.ko.md @@ -72,27 +72,27 @@ const { fields, files } = await mp.parseAll(request); ```typescript interface MultipartOptions { - maxFileSize?: number; // 기본값: 10 MiB - maxFiles?: number; // 기본값: 10 - maxFieldSize?: number; // 기본값: 1 MiB - maxFields?: number; // 기본값: 100 - maxHeaderSize?: number; // 기본값: 8 KiB - maxTotalSize?: number | null; // 기본값: 50 MiB (null = 무제한) - maxParts?: number; // 기본값: Infinity + maxFileSize?: number; // 기본값: 10 MiB + maxFiles?: number; // 기본값: 10 + maxFieldSize?: number; // 기본값: 1 MiB + maxFields?: number; // 기본값: 100 + maxHeaderSize?: number; // 기본값: 8 KiB + maxTotalSize?: number | null; // 기본값: 50 MiB (null = 무제한) + maxParts?: number; // 기본값: Infinity allowedMimeTypes?: AllowedMimeTypes; // 기본값: undefined (제한 없음) } ``` -| 옵션 | 기본값 | 설명 | -|:-----|:-------|:-----| -| `maxFileSize` | `10 * 1024 * 1024` | 단일 파일 파트의 최대 크기 (바이트) | -| `maxFiles` | `10` | 최대 파일 파트 수 | -| `maxFieldSize` | `1 * 1024 * 1024` | 단일 필드 파트의 최대 크기 (바이트) | -| `maxFields` | `100` | 최대 필드 파트 수 | -| `maxHeaderSize` | `8 * 1024` | 파트 헤더의 최대 크기 (바이트) | -| `maxTotalSize` | `50 * 1024 * 1024` | 전체 본문의 최대 크기. `null`이면 무제한 | -| `maxParts` | `Infinity` | 전체 파트 수 최대값 (필드 + 파일) | -| `allowedMimeTypes` | `undefined` | 필드별 파일 MIME 타입 허용 목록 | +| 옵션 | 기본값 | 설명 | +| :----------------- | :----------------- | :--------------------------------------- | +| `maxFileSize` | `10 * 1024 * 1024` | 단일 파일 파트의 최대 크기 (바이트) | +| `maxFiles` | `10` | 최대 파일 파트 수 | +| `maxFieldSize` | `1 * 1024 * 1024` | 단일 필드 파트의 최대 크기 (바이트) | +| `maxFields` | `100` | 최대 필드 파트 수 | +| `maxHeaderSize` | `8 * 1024` | 파트 헤더의 최대 크기 (바이트) | +| `maxTotalSize` | `50 * 1024 * 1024` | 전체 본문의 최대 크기. `null`이면 무제한 | +| `maxParts` | `Infinity` | 전체 파트 수 최대값 (필드 + 파일) | +| `allowedMimeTypes` | `undefined` | 필드별 파일 MIME 타입 허용 목록 | ### `allowedMimeTypes` @@ -162,29 +162,29 @@ const avatars = files.get('avatar') ?? []; #### 공통 속성 -| 속성 | 타입 | 설명 | -|:----|:-----|:-----| -| `name` | `string` | `Content-Disposition`의 필드 이름 | -| `filename` | `string \| undefined` | 원본 파일명 (파일 파트에만 존재) | -| `contentType` | `string` | 파트의 Content-Type | -| `isFile` | `boolean` | 파일 파트이면 `true`, 필드 파트이면 `false` | +| 속성 | 타입 | 설명 | +| :------------ | :-------------------- | :------------------------------------------ | +| `name` | `string` | `Content-Disposition`의 필드 이름 | +| `filename` | `string \| undefined` | 원본 파일명 (파일 파트에만 존재) | +| `contentType` | `string` | 파트의 Content-Type | +| `isFile` | `boolean` | 파일 파트이면 `true`, 필드 파트이면 `false` | #### `MultipartField` (isFile: false) -| 메서드 | 반환 타입 | 설명 | -|:------|:---------|:-----| -| `text()` | `string` | UTF-8로 디코딩한 본문 (동기) | -| `bytes()` | `Uint8Array` | 원본 바이트 (동기) | +| 메서드 | 반환 타입 | 설명 | +| :-------- | :----------- | :--------------------------- | +| `text()` | `string` | UTF-8로 디코딩한 본문 (동기) | +| `bytes()` | `Uint8Array` | 원본 바이트 (동기) | #### `MultipartFile` (isFile: true) -| 메서드 | 반환 타입 | 설명 | -|:------|:---------|:-----| -| `stream()` | `ReadableStream` | 배압을 지원하는 읽기 스트림 | -| `bytes()` | `Promise` | 전체 스트림을 바이트로 읽기 | -| `text()` | `Promise` | 전체 스트림을 UTF-8 문자열로 읽기 | -| `arrayBuffer()` | `Promise` | 전체 스트림을 ArrayBuffer로 읽기 | -| `saveTo(path)` | `Promise` | `Bun.write`로 디스크에 저장. 기록한 바이트 수 반환 | +| 메서드 | 반환 타입 | 설명 | +| :-------------- | :--------------------------- | :------------------------------------------------- | +| `stream()` | `ReadableStream` | 배압을 지원하는 읽기 스트림 | +| `bytes()` | `Promise` | 전체 스트림을 바이트로 읽기 | +| `text()` | `Promise` | 전체 스트림을 UTF-8 문자열로 읽기 | +| `arrayBuffer()` | `Promise` | 전체 스트림을 ArrayBuffer로 읽기 | +| `saveTo(path)` | `Promise` | `Bun.write`로 디스크에 저장. 기록한 바이트 수 반환 | > `stream()`은 파일 파트당 한 번만 호출할 수 있습니다. 두 번째 호출이나 `stream()` 이후 `bytes()`/`text()` 호출은 에러를 throw합니다. @@ -193,15 +193,16 @@ const avatars = files.get('avatar') ?? []; 사용자가 제공한 파일명을 안전한 파일 시스템용으로 변환합니다. 빈 문자열이나 유효하지 않은 파일명은 `undefined`를 반환합니다. ```typescript -sanitizeFilename('../../etc/passwd') // 'passwd' -sanitizeFilename('C:\\Users\\file.txt') // 'file.txt' -sanitizeFilename('photo<1>.jpg') // 'photo_1_.jpg' -sanitizeFilename('.hidden') // 'hidden' -sanitizeFilename('') // undefined -sanitizeFilename('CON.txt') // undefined (Windows 예약 이름) +sanitizeFilename('../../etc/passwd'); // 'passwd' +sanitizeFilename('C:\\Users\\file.txt'); // 'file.txt' +sanitizeFilename('photo<1>.jpg'); // 'photo_1_.jpg' +sanitizeFilename('.hidden'); // 'hidden' +sanitizeFilename(''); // undefined +sanitizeFilename('CON.txt'); // undefined (Windows 예약 이름) ``` 수행하는 작업: + - 디렉터리 구성 요소 제거 (경로 탐색 방지) - 널 바이트 및 제어 문자 제거 - 안전하지 않은 특수 문자 치환 (`<>:"/\|?*`) @@ -209,10 +210,10 @@ sanitizeFilename('CON.txt') // undefined (Windows 예약 이름) - Windows 예약 이름 거부 (CON, PRN, AUX, NUL, COM1-9, LPT1-9) - 최대 파일명 길이 적용 (확장자 보존) -| 옵션 | 기본값 | 설명 | -|:----|:-------|:-----| -| `maxLength` | `255` | 변환 후 파일명의 최대 길이 | -| `replacement` | `'_'` | 안전하지 않은 문자를 대체할 문자 | +| 옵션 | 기본값 | 설명 | +| :------------ | :----- | :------------------------------- | +| `maxLength` | `255` | 변환 후 파일명의 최대 길이 | +| `replacement` | `'_'` | 안전하지 않은 문자를 대체할 문자 | > **`filename` 보안 주의:** 파일 파트의 `filename` 속성은 `Content-Disposition` 헤더의 값을 그대로 반환합니다. `../../etc/passwd`와 같은 경로 탐색 시퀀스나 `C:\Users\file.txt`과 같은 Windows 경로를 포함할 수 있습니다. 파일 시스템 작업에 사용하기 전에 반드시 `sanitizeFilename()`으로 변환하세요. `filename*=` 파라미터(RFC 5987)는 RFC 7578 Section 4.2에 따라 의도적으로 무시됩니다. @@ -226,44 +227,46 @@ sanitizeFilename('CON.txt') // undefined (Windows 예약 이름) import { MultipartError, MultipartErrorReason } from '@zipbul/multipart'; try { - for await (const part of mp.parse(request)) { /* ... */ } + for await (const part of mp.parse(request)) { + /* ... */ + } } catch (e) { if (e instanceof MultipartError) { - e.reason; // MultipartErrorReason 열거형 값 - e.message; // 사람이 읽을 수 있는 설명 - e.context; // { partIndex?, fieldName?, bytesRead? } - e.cause; // 원본 에러 (스트림 실패 시) + e.reason; // MultipartErrorReason 열거형 값 + e.message; // 사람이 읽을 수 있는 설명 + e.context; // { partIndex?, fieldName?, bytesRead? } + e.cause; // 원본 에러 (스트림 실패 시) } } ``` ### `MultipartErrorReason` -| 사유 | 발생 위치 | 설명 | -|:----|:---------|:-----| -| `InvalidOptions` | `create()` | 잘못된 옵션 | -| `MissingBody` | `parse()` / `parseAll()` | 요청 본문이 없거나 null | -| `InvalidContentType` | `parse()` / `parseAll()` | Content-Type이 없거나 `multipart/form-data`가 아님 | -| `MissingBoundary` | `parse()` / `parseAll()` | 바운더리 파라미터가 없거나 너무 긴 경우 (최대 70자) | -| `MalformedHeader` | `parse()` / `parseAll()` | 잘못된 파트 헤더 (Content-Disposition 누락 등) | -| `HeaderTooLarge` | `parse()` / `parseAll()` | 파트 헤더가 `maxHeaderSize` 초과 | -| `FileTooLarge` | `parse()` / `parseAll()` | 파일 파트가 `maxFileSize` 초과 | -| `FieldTooLarge` | `parse()` / `parseAll()` | 필드 파트가 `maxFieldSize` 초과 | -| `TooManyFiles` | `parse()` / `parseAll()` | 파일 수가 `maxFiles` 초과 | -| `TooManyFields` | `parse()` / `parseAll()` | 필드 수가 `maxFields` 초과 | -| `TooManyParts` | `parse()` / `parseAll()` | 전체 파트 수 (필드 + 파일)가 `maxParts` 초과 | -| `TotalSizeLimitExceeded` | `parse()` / `parseAll()` | 전체 본문 크기가 `maxTotalSize` 초과 | -| `MimeTypeNotAllowed` | `parse()` / `parseAll()` | 파일 MIME 타입이 해당 필드의 `allowedMimeTypes`에 없음 | -| `UnexpectedEnd` | `parse()` / `parseAll()` | 최종 바운더리 전에 스트림 종료 | +| 사유 | 발생 위치 | 설명 | +| :----------------------- | :----------------------- | :----------------------------------------------------- | +| `InvalidOptions` | `create()` | 잘못된 옵션 | +| `MissingBody` | `parse()` / `parseAll()` | 요청 본문이 없거나 null | +| `InvalidContentType` | `parse()` / `parseAll()` | Content-Type이 없거나 `multipart/form-data`가 아님 | +| `MissingBoundary` | `parse()` / `parseAll()` | 바운더리 파라미터가 없거나 너무 긴 경우 (최대 70자) | +| `MalformedHeader` | `parse()` / `parseAll()` | 잘못된 파트 헤더 (Content-Disposition 누락 등) | +| `HeaderTooLarge` | `parse()` / `parseAll()` | 파트 헤더가 `maxHeaderSize` 초과 | +| `FileTooLarge` | `parse()` / `parseAll()` | 파일 파트가 `maxFileSize` 초과 | +| `FieldTooLarge` | `parse()` / `parseAll()` | 필드 파트가 `maxFieldSize` 초과 | +| `TooManyFiles` | `parse()` / `parseAll()` | 파일 수가 `maxFiles` 초과 | +| `TooManyFields` | `parse()` / `parseAll()` | 필드 수가 `maxFields` 초과 | +| `TooManyParts` | `parse()` / `parseAll()` | 전체 파트 수 (필드 + 파일)가 `maxParts` 초과 | +| `TotalSizeLimitExceeded` | `parse()` / `parseAll()` | 전체 본문 크기가 `maxTotalSize` 초과 | +| `MimeTypeNotAllowed` | `parse()` / `parseAll()` | 파일 MIME 타입이 해당 필드의 `allowedMimeTypes`에 없음 | +| `UnexpectedEnd` | `parse()` / `parseAll()` | 최종 바운더리 전에 스트림 종료 | ### `MultipartErrorContext` 에러에는 추가 정보를 담은 선택적 `context` 객체가 포함됩니다: -| 속성 | 타입 | 설명 | -|:----|:-----|:-----| -| `partIndex` | `number?` | 에러가 발생한 파트의 0-기반 인덱스 | -| `fieldName` | `string?` | 해당 파트의 필드 이름 (알 수 있는 경우) | +| 속성 | 타입 | 설명 | +| :---------- | :-------- | :----------------------------------------- | +| `partIndex` | `number?` | 에러가 발생한 파트의 0-기반 인덱스 | +| `fieldName` | `string?` | 해당 파트의 필드 이름 (알 수 있는 경우) | | `bytesRead` | `number?` | 에러 시점까지 스트림에서 읽은 총 바이트 수 |
@@ -319,7 +322,7 @@ import { Multipart, sanitizeFilename } from '@zipbul/multipart'; const mp = Multipart.create({ maxFileSize: 100 * 1024 * 1024, // 파일당 100 MiB - maxTotalSize: null, // 전체 제한 없음 + maxTotalSize: null, // 전체 제한 없음 }); Bun.serve({ diff --git a/packages/multipart/README.md b/packages/multipart/README.md index 92a1831..39a0274 100644 --- a/packages/multipart/README.md +++ b/packages/multipart/README.md @@ -72,27 +72,27 @@ const { fields, files } = await mp.parseAll(request); ```typescript interface MultipartOptions { - maxFileSize?: number; // Default: 10 MiB - maxFiles?: number; // Default: 10 - maxFieldSize?: number; // Default: 1 MiB - maxFields?: number; // Default: 100 - maxHeaderSize?: number; // Default: 8 KiB - maxTotalSize?: number | null; // Default: 50 MiB (null = unlimited) - maxParts?: number; // Default: Infinity + maxFileSize?: number; // Default: 10 MiB + maxFiles?: number; // Default: 10 + maxFieldSize?: number; // Default: 1 MiB + maxFields?: number; // Default: 100 + maxHeaderSize?: number; // Default: 8 KiB + maxTotalSize?: number | null; // Default: 50 MiB (null = unlimited) + maxParts?: number; // Default: Infinity allowedMimeTypes?: AllowedMimeTypes; // Default: undefined (no restriction) } ``` -| Option | Default | Description | -|:-------|:--------|:------------| -| `maxFileSize` | `10 * 1024 * 1024` | Maximum size of a single file part in bytes | -| `maxFiles` | `10` | Maximum number of file parts allowed | -| `maxFieldSize` | `1 * 1024 * 1024` | Maximum size of a single field part in bytes | -| `maxFields` | `100` | Maximum number of field parts allowed | -| `maxHeaderSize` | `8 * 1024` | Maximum size of part headers in bytes | -| `maxTotalSize` | `50 * 1024 * 1024` | Maximum total body size in bytes. Set to `null` to disable | -| `maxParts` | `Infinity` | Maximum total number of parts (fields + files) | -| `allowedMimeTypes` | `undefined` | Per-field MIME type allowlist for file parts | +| Option | Default | Description | +| :----------------- | :----------------- | :--------------------------------------------------------- | +| `maxFileSize` | `10 * 1024 * 1024` | Maximum size of a single file part in bytes | +| `maxFiles` | `10` | Maximum number of file parts allowed | +| `maxFieldSize` | `1 * 1024 * 1024` | Maximum size of a single field part in bytes | +| `maxFields` | `100` | Maximum number of field parts allowed | +| `maxHeaderSize` | `8 * 1024` | Maximum size of part headers in bytes | +| `maxTotalSize` | `50 * 1024 * 1024` | Maximum total body size in bytes. Set to `null` to disable | +| `maxParts` | `Infinity` | Maximum total number of parts (fields + files) | +| `allowedMimeTypes` | `undefined` | Per-field MIME type allowlist for file parts | ### `allowedMimeTypes` @@ -162,29 +162,29 @@ A discriminated union of `MultipartField` and `MultipartFile`. Use `part.isFile` #### Common properties -| Property | Type | Description | -|:---------|:-----|:------------| -| `name` | `string` | Field name from `Content-Disposition` | -| `filename` | `string \| undefined` | Original filename (only on file parts) | -| `contentType` | `string` | Content-Type of the part | -| `isFile` | `boolean` | `true` for file parts, `false` for field parts | +| Property | Type | Description | +| :------------ | :-------------------- | :--------------------------------------------- | +| `name` | `string` | Field name from `Content-Disposition` | +| `filename` | `string \| undefined` | Original filename (only on file parts) | +| `contentType` | `string` | Content-Type of the part | +| `isFile` | `boolean` | `true` for file parts, `false` for field parts | #### `MultipartField` (isFile: false) -| Method | Return Type | Description | -|:-------|:------------|:------------| -| `text()` | `string` | Body decoded as UTF-8 (sync) | -| `bytes()` | `Uint8Array` | Body as raw bytes (sync) | +| Method | Return Type | Description | +| :-------- | :----------- | :--------------------------- | +| `text()` | `string` | Body decoded as UTF-8 (sync) | +| `bytes()` | `Uint8Array` | Body as raw bytes (sync) | #### `MultipartFile` (isFile: true) -| Method | Return Type | Description | -|:-------|:------------|:------------| -| `stream()` | `ReadableStream` | Body as a readable stream with backpressure | -| `bytes()` | `Promise` | Read entire stream into bytes | -| `text()` | `Promise` | Read entire stream and decode as UTF-8 | -| `arrayBuffer()` | `Promise` | Read entire stream into an ArrayBuffer | -| `saveTo(path)` | `Promise` | Write to disk via `Bun.write`. Returns bytes written | +| Method | Return Type | Description | +| :-------------- | :--------------------------- | :--------------------------------------------------- | +| `stream()` | `ReadableStream` | Body as a readable stream with backpressure | +| `bytes()` | `Promise` | Read entire stream into bytes | +| `text()` | `Promise` | Read entire stream and decode as UTF-8 | +| `arrayBuffer()` | `Promise` | Read entire stream into an ArrayBuffer | +| `saveTo(path)` | `Promise` | Write to disk via `Bun.write`. Returns bytes written | > `stream()` can only be called once per file part. Calling it a second time, or calling `bytes()`/`text()` after `stream()`, throws an error. @@ -193,15 +193,16 @@ A discriminated union of `MultipartField` and `MultipartFile`. Use `part.isFile` Sanitizes a user-provided filename for safe filesystem use. Returns `undefined` for empty or invalid filenames. ```typescript -sanitizeFilename('../../etc/passwd') // 'passwd' -sanitizeFilename('C:\\Users\\file.txt') // 'file.txt' -sanitizeFilename('photo<1>.jpg') // 'photo_1_.jpg' -sanitizeFilename('.hidden') // 'hidden' -sanitizeFilename('') // undefined -sanitizeFilename('CON.txt') // undefined (Windows reserved) +sanitizeFilename('../../etc/passwd'); // 'passwd' +sanitizeFilename('C:\\Users\\file.txt'); // 'file.txt' +sanitizeFilename('photo<1>.jpg'); // 'photo_1_.jpg' +sanitizeFilename('.hidden'); // 'hidden' +sanitizeFilename(''); // undefined +sanitizeFilename('CON.txt'); // undefined (Windows reserved) ``` What it does: + - Strips directory components (path traversal prevention) - Removes null bytes and control characters - Replaces unsafe special characters (`<>:"/\|?*`) @@ -209,10 +210,10 @@ What it does: - Rejects Windows reserved names (CON, PRN, AUX, NUL, COM1-9, LPT1-9) - Enforces maximum filename length (preserving extension) -| Option | Default | Description | -|:-------|:--------|:------------| -| `maxLength` | `255` | Maximum length of the sanitized filename | -| `replacement` | `'_'` | Character to replace unsafe characters with | +| Option | Default | Description | +| :------------ | :------ | :------------------------------------------ | +| `maxLength` | `255` | Maximum length of the sanitized filename | +| `replacement` | `'_'` | Character to replace unsafe characters with | > **Security note on `filename`:** The `filename` property on file parts is returned as-is from the `Content-Disposition` header. It may contain path traversal sequences like `../../etc/passwd` or Windows paths like `C:\Users\file.txt`. Always use `sanitizeFilename()` before using in any filesystem operation. The `filename*=` parameter (RFC 5987) is intentionally ignored per RFC 7578 Section 4.2. @@ -226,44 +227,46 @@ All errors thrown by `parse()`, `parseAll()`, and `create()` are `MultipartError import { MultipartError, MultipartErrorReason } from '@zipbul/multipart'; try { - for await (const part of mp.parse(request)) { /* ... */ } + for await (const part of mp.parse(request)) { + /* ... */ + } } catch (e) { if (e instanceof MultipartError) { - e.reason; // MultipartErrorReason enum value - e.message; // Human-readable description - e.context; // { partIndex?, fieldName?, bytesRead? } - e.cause; // Original error (for stream failures) + e.reason; // MultipartErrorReason enum value + e.message; // Human-readable description + e.context; // { partIndex?, fieldName?, bytesRead? } + e.cause; // Original error (for stream failures) } } ``` ### `MultipartErrorReason` -| Reason | Thrown by | Description | -|:-------|:---------|:------------| -| `InvalidOptions` | `create()` | Invalid options provided | -| `MissingBody` | `parse()` / `parseAll()` | Request body is missing or null | -| `InvalidContentType` | `parse()` / `parseAll()` | Content-Type is missing or not `multipart/form-data` | -| `MissingBoundary` | `parse()` / `parseAll()` | Boundary parameter is missing or too long (max 70 chars) | -| `MalformedHeader` | `parse()` / `parseAll()` | Malformed part headers (missing Content-Disposition, etc.) | -| `HeaderTooLarge` | `parse()` / `parseAll()` | Part headers exceed `maxHeaderSize` | -| `FileTooLarge` | `parse()` / `parseAll()` | A file part exceeds `maxFileSize` | -| `FieldTooLarge` | `parse()` / `parseAll()` | A field part exceeds `maxFieldSize` | -| `TooManyFiles` | `parse()` / `parseAll()` | Number of file parts exceeds `maxFiles` | -| `TooManyFields` | `parse()` / `parseAll()` | Number of field parts exceeds `maxFields` | -| `TooManyParts` | `parse()` / `parseAll()` | Total parts (fields + files) exceeds `maxParts` | -| `TotalSizeLimitExceeded` | `parse()` / `parseAll()` | Total body size exceeds `maxTotalSize` | -| `MimeTypeNotAllowed` | `parse()` / `parseAll()` | File MIME type not in `allowedMimeTypes` for its field | -| `UnexpectedEnd` | `parse()` / `parseAll()` | Stream ended before the final boundary | +| Reason | Thrown by | Description | +| :----------------------- | :----------------------- | :--------------------------------------------------------- | +| `InvalidOptions` | `create()` | Invalid options provided | +| `MissingBody` | `parse()` / `parseAll()` | Request body is missing or null | +| `InvalidContentType` | `parse()` / `parseAll()` | Content-Type is missing or not `multipart/form-data` | +| `MissingBoundary` | `parse()` / `parseAll()` | Boundary parameter is missing or too long (max 70 chars) | +| `MalformedHeader` | `parse()` / `parseAll()` | Malformed part headers (missing Content-Disposition, etc.) | +| `HeaderTooLarge` | `parse()` / `parseAll()` | Part headers exceed `maxHeaderSize` | +| `FileTooLarge` | `parse()` / `parseAll()` | A file part exceeds `maxFileSize` | +| `FieldTooLarge` | `parse()` / `parseAll()` | A field part exceeds `maxFieldSize` | +| `TooManyFiles` | `parse()` / `parseAll()` | Number of file parts exceeds `maxFiles` | +| `TooManyFields` | `parse()` / `parseAll()` | Number of field parts exceeds `maxFields` | +| `TooManyParts` | `parse()` / `parseAll()` | Total parts (fields + files) exceeds `maxParts` | +| `TotalSizeLimitExceeded` | `parse()` / `parseAll()` | Total body size exceeds `maxTotalSize` | +| `MimeTypeNotAllowed` | `parse()` / `parseAll()` | File MIME type not in `allowedMimeTypes` for its field | +| `UnexpectedEnd` | `parse()` / `parseAll()` | Stream ended before the final boundary | ### `MultipartErrorContext` Errors include an optional `context` object with additional information: -| Property | Type | Description | -|:---------|:-----|:------------| -| `partIndex` | `number?` | Zero-based index of the part where the error occurred | -| `fieldName` | `string?` | The field name of the part, if known | +| Property | Type | Description | +| :---------- | :-------- | :-------------------------------------------------------- | +| `partIndex` | `number?` | Zero-based index of the part where the error occurred | +| `fieldName` | `string?` | The field name of the part, if known | | `bytesRead` | `number?` | Total bytes read from the stream at the time of the error |
@@ -319,7 +322,7 @@ import { Multipart, sanitizeFilename } from '@zipbul/multipart'; const mp = Multipart.create({ maxFileSize: 100 * 1024 * 1024, // 100 MiB per file - maxTotalSize: null, // no total limit + maxTotalSize: null, // no total limit }); Bun.serve({ diff --git a/packages/multipart/bench/multipart.bench.ts b/packages/multipart/bench/multipart.bench.ts index ebba382..1376def 100644 --- a/packages/multipart/bench/multipart.bench.ts +++ b/packages/multipart/bench/multipart.bench.ts @@ -1,16 +1,14 @@ import { bench, group, run } from 'mitata'; +import type { MultipartFile } from '../src/interfaces'; + import { Multipart } from '../src/multipart'; -import { parseMultipart, BufferingCallbacks, StreamingCallbacks, PartQueue } from '../src/parser'; import { resolveMultipartOptions } from '../src/options'; -import type { MultipartFile } from '../src/interfaces'; +import { parseMultipart, BufferingCallbacks, StreamingCallbacks, PartQueue } from '../src/parser'; // ── Helpers ───────────────────────────────────────────────────────── -function buildBody( - boundary: string, - parts: Array<{ headers: string; body: string }>, -): string { +function buildBody(boundary: string, parts: Array<{ headers: string; body: string }>): string { let raw = ''; for (const part of parts) { @@ -101,19 +99,19 @@ group('parseAll', () => { group('parse (streaming)', () => { bench('small (3 fields)', async () => { for await (const part of mp.parse(createRequest(boundary, smallBody))) { - if (part.isFile) await part.bytes(); + if (part.isFile) {await part.bytes();} } }); bench('medium (10 fields + 2 files)', async () => { for await (const part of mp.parse(createRequest(boundary, mediumBody))) { - if (part.isFile) await part.bytes(); + if (part.isFile) {await part.bytes();} } }); bench('large (1 MiB file)', async () => { for await (const part of mp.parse(createRequest(boundary, largeBody))) { - if (part.isFile) await part.bytes(); + if (part.isFile) {await part.bytes();} } }); }); @@ -149,10 +147,12 @@ group('FSM + StreamingCallbacks (direct)', () => { parseMultipart(toStream(smallBody), boundary, opts, callbacks) .then(() => queue.finish()) - .catch((error) => { if (!queue.abandoned) queue.fail(error); }); + .catch(error => { + if (!queue.abandoned) {queue.fail(error);} + }); for await (const part of queue) { - if (part.isFile) await part.bytes(); + if (part.isFile) {await part.bytes();} } }); @@ -162,10 +162,12 @@ group('FSM + StreamingCallbacks (direct)', () => { parseMultipart(toStream(mediumBody), boundary, opts, callbacks) .then(() => queue.finish()) - .catch((error) => { if (!queue.abandoned) queue.fail(error); }); + .catch(error => { + if (!queue.abandoned) {queue.fail(error);} + }); for await (const part of queue) { - if (part.isFile) await part.bytes(); + if (part.isFile) {await part.bytes();} } }); @@ -175,10 +177,12 @@ group('FSM + StreamingCallbacks (direct)', () => { parseMultipart(toStream(largeBody), boundary, opts, callbacks) .then(() => queue.finish()) - .catch((error) => { if (!queue.abandoned) queue.fail(error); }); + .catch(error => { + if (!queue.abandoned) {queue.fail(error);} + }); for await (const part of queue) { - if (part.isFile) await part.bytes(); + if (part.isFile) {await part.bytes();} } }); }); diff --git a/packages/multipart/bunfig.toml b/packages/multipart/bunfig.toml index 43a5c17..2fc59aa 100644 --- a/packages/multipart/bunfig.toml +++ b/packages/multipart/bunfig.toml @@ -3,12 +3,7 @@ onlyFailures = true coverage = true coverageReporter = ["text", "lcov"] coverageThreshold = 0.95 -coveragePathIgnorePatterns = [ - "node_modules/**", - "dist/**", - "../shared/**", - "../result/**" -] +coveragePathIgnorePatterns = ["node_modules/**", "dist/**", "../shared/**", "../result/**"] [test.reporter] dots = true diff --git a/packages/multipart/package.json b/packages/multipart/package.json index a49a572..762bf0c 100644 --- a/packages/multipart/package.json +++ b/packages/multipart/package.json @@ -2,6 +2,17 @@ "name": "@zipbul/multipart", "version": "0.1.1", "description": "Streaming multipart/form-data parser built on Bun-native APIs", + "keywords": [ + "bun", + "file-upload", + "form-data", + "multipart", + "streaming", + "typescript", + "zipbul" + ], + "homepage": "https://github.com/zipbul/toolkit/tree/main/packages/multipart#readme", + "bugs": "https://github.com/zipbul/toolkit/issues", "license": "MIT", "author": "Junhyung Park (https://github.com/parkrevil)", "repository": { @@ -9,21 +20,11 @@ "url": "https://github.com/zipbul/toolkit", "directory": "packages/multipart" }, - "bugs": "https://github.com/zipbul/toolkit/issues", - "homepage": "https://github.com/zipbul/toolkit/tree/main/packages/multipart#readme", - "keywords": [ - "multipart", - "form-data", - "file-upload", - "streaming", - "bun", - "typescript", - "zipbul" + "files": [ + "dist" ], - "engines": { - "bun": ">=1.0.0" - }, "type": "module", + "sideEffects": false, "module": "dist/index.js", "types": "dist/index.d.ts", "exports": { @@ -32,21 +33,20 @@ "import": "./dist/index.js" } }, - "files": [ - "dist" - ], "scripts": { + "bench": "bun run bench/multipart.bench.ts", "build": "bun build index.ts --outdir dist --target bun --format esm --packages external --production && tsc -p tsconfig.build.json", - "test": "bun test", "coverage": "bun test --coverage", - "bench": "bun run bench/multipart.bench.ts" + "test": "bun test" }, - "sideEffects": false, "dependencies": { "@zipbul/result": "workspace:*", "@zipbul/shared": "workspace:*" }, "devDependencies": { "mitata": "^1.0.34" + }, + "engines": { + "bun": ">=1.0.0" } } diff --git a/packages/multipart/src/multipart.spec.ts b/packages/multipart/src/multipart.spec.ts index 5df7d6d..fac5aad 100644 --- a/packages/multipart/src/multipart.spec.ts +++ b/packages/multipart/src/multipart.spec.ts @@ -1,17 +1,15 @@ import { describe, test, expect } from 'bun:test'; -import { Multipart } from './multipart'; -import { MultipartError } from './interfaces'; import type { MultipartPart } from './interfaces'; + import { MultipartErrorReason } from './enums'; +import { MultipartError } from './interfaces'; +import { Multipart } from './multipart'; import { BufferedMultipartFile } from './parser/streaming-part'; // ── Helpers ───────────────────────────────────────────────────────── -function createMultipartRequest( - boundary: string, - parts: Array<{ headers: string; body: string }>, -): Request { +function createMultipartRequest(boundary: string, parts: Array<{ headers: string; body: string }>): Request { let raw = ''; for (const part of parts) { @@ -32,7 +30,7 @@ function createMultipartRequest( } async function partText(part: MultipartPart): Promise { - if (part.isFile) return part.text(); + if (part.isFile) {return part.text();} return part.text(); } @@ -184,7 +182,9 @@ describe('Multipart.parse', () => { }); try { - for await (const _ of mp.parse(request)) { /* consume */ } + for await (const _ of mp.parse(request)) { + /* consume */ + } expect(true).toBe(false); } catch (e) { expect(e).toBeInstanceOf(MultipartError); @@ -201,7 +201,9 @@ describe('Multipart.parse', () => { }); try { - for await (const _ of mp.parse(request)) { /* consume */ } + for await (const _ of mp.parse(request)) { + /* consume */ + } expect(true).toBe(false); } catch (e) { expect(e).toBeInstanceOf(MultipartError); @@ -217,7 +219,9 @@ describe('Multipart.parse', () => { }); try { - for await (const _ of mp.parse(request)) { /* consume */ } + for await (const _ of mp.parse(request)) { + /* consume */ + } expect(true).toBe(false); } catch (e) { expect(e).toBeInstanceOf(MultipartError); @@ -234,7 +238,9 @@ describe('Multipart.parse', () => { }); try { - for await (const _ of mp.parse(request)) { /* consume */ } + for await (const _ of mp.parse(request)) { + /* consume */ + } expect(true).toBe(false); } catch (e) { expect(e).toBeInstanceOf(MultipartError); @@ -354,10 +360,7 @@ describe('MultipartError', () => { test('supports cause option', () => { const cause = new TypeError('original'); - const e = new MultipartError( - { reason: MultipartErrorReason.UnexpectedEnd, message: 'wrapped' }, - { cause }, - ); + const e = new MultipartError({ reason: MultipartErrorReason.UnexpectedEnd, message: 'wrapped' }, { cause }); expect(e.cause).toBe(cause); }); diff --git a/packages/multipart/src/multipart.ts b/packages/multipart/src/multipart.ts index d9c371f..9f37035 100644 --- a/packages/multipart/src/multipart.ts +++ b/packages/multipart/src/multipart.ts @@ -1,12 +1,13 @@ import { isErr } from '@zipbul/result'; import { HttpHeader } from '@zipbul/shared'; +import type { MultipartFile, MultipartOptions, MultipartPart } from './interfaces'; +import type { ParseAllResult, ResolvedMultipartOptions } from './types'; + import { MultipartErrorReason } from './enums'; import { MultipartError } from './interfaces'; -import type { MultipartFile, MultipartOptions, MultipartPart } from './interfaces'; import { resolveMultipartOptions, validateMultipartOptions } from './options'; import { extractBoundary, parseMultipart, PartQueue, BufferingCallbacks, StreamingCallbacks, MultipartFileImpl } from './parser'; -import type { ParseAllResult, ResolvedMultipartOptions } from './types'; /** * Streaming multipart/form-data parser built on Bun-native APIs. @@ -65,7 +66,9 @@ export class Multipart { // Errors are propagated via queue.fail() → iterator throws. parseMultipart(body, boundary, this.options, callbacks) .then(() => queue.finish()) - .catch((error) => { if (!queue.abandoned) queue.fail(error); }); + .catch(error => { + if (!queue.abandoned) {queue.fail(error);} + }); // Manual iteration instead of `yield* queue` to auto-drain unconsumed // file streams between yields. Without this, skipping a file part's @@ -85,7 +88,7 @@ export class Multipart { const { value, done } = await iter.next(); - if (done) break; + if (done) {break;} previousFile = value.isFile ? (value as MultipartFileImpl) : undefined; yield value; diff --git a/packages/multipart/src/options.spec.ts b/packages/multipart/src/options.spec.ts index 7326b63..c41be09 100644 --- a/packages/multipart/src/options.spec.ts +++ b/packages/multipart/src/options.spec.ts @@ -1,7 +1,6 @@ -import { describe, test, expect } from 'bun:test'; import { isErr } from '@zipbul/result'; +import { describe, test, expect } from 'bun:test'; -import { resolveMultipartOptions, validateMultipartOptions } from './options'; import { DEFAULT_MAX_FIELD_SIZE, DEFAULT_MAX_FIELDS, @@ -12,6 +11,7 @@ import { DEFAULT_MAX_TOTAL_SIZE, } from './constants'; import { MultipartErrorReason } from './enums'; +import { resolveMultipartOptions, validateMultipartOptions } from './options'; // ── resolveMultipartOptions ───────────────────────────────────────── diff --git a/packages/multipart/src/options.ts b/packages/multipart/src/options.ts index 0a9b17c..b2f4eb8 100644 --- a/packages/multipart/src/options.ts +++ b/packages/multipart/src/options.ts @@ -1,6 +1,10 @@ -import { err } from '@zipbul/result'; import type { Result } from '@zipbul/result'; +import { err } from '@zipbul/result'; + +import type { MultipartErrorData, MultipartOptions } from './interfaces'; +import type { ResolvedMultipartOptions } from './types'; + import { DEFAULT_MAX_FIELD_SIZE, DEFAULT_MAX_FIELDS, @@ -11,8 +15,6 @@ import { DEFAULT_MAX_TOTAL_SIZE, } from './constants'; import { MultipartErrorReason } from './enums'; -import type { MultipartErrorData, MultipartOptions } from './interfaces'; -import type { ResolvedMultipartOptions } from './types'; /** * Takes partial {@link MultipartOptions} and fills in every missing field diff --git a/packages/multipart/src/parser/boundary.spec.ts b/packages/multipart/src/parser/boundary.spec.ts index e94afa3..9b6c6ad 100644 --- a/packages/multipart/src/parser/boundary.spec.ts +++ b/packages/multipart/src/parser/boundary.spec.ts @@ -1,8 +1,8 @@ -import { describe, test, expect } from 'bun:test'; import { isErr } from '@zipbul/result'; +import { describe, test, expect } from 'bun:test'; -import { extractBoundary } from './boundary'; import { MultipartErrorReason } from '../enums'; +import { extractBoundary } from './boundary'; describe('extractBoundary', () => { // ── Success cases ──────────────────────────────────────────────── @@ -130,9 +130,7 @@ describe('extractBoundary', () => { expect(isErr(result)).toBe(true); if (isErr(result)) { expect(result.data.reason).toBe(MultipartErrorReason.MissingBoundary); - expect(result.data.message).toBe( - `Boundary length (71) exceeds maximum of 70 characters (RFC 2046)`, - ); + expect(result.data.message).toBe(`Boundary length (71) exceeds maximum of 70 characters (RFC 2046)`); } }); @@ -142,9 +140,7 @@ describe('extractBoundary', () => { expect(isErr(result)).toBe(true); if (isErr(result)) { expect(result.data.reason).toBe(MultipartErrorReason.MissingBoundary); - expect(result.data.message).toBe( - `Boundary length (1000) exceeds maximum of 70 characters (RFC 2046)`, - ); + expect(result.data.message).toBe(`Boundary length (1000) exceeds maximum of 70 characters (RFC 2046)`); } }); }); diff --git a/packages/multipart/src/parser/boundary.ts b/packages/multipart/src/parser/boundary.ts index 196a7de..117f856 100644 --- a/packages/multipart/src/parser/boundary.ts +++ b/packages/multipart/src/parser/boundary.ts @@ -1,9 +1,11 @@ -import { err } from '@zipbul/result'; import type { Result } from '@zipbul/result'; -import { MultipartErrorReason } from '../enums'; +import { err } from '@zipbul/result'; + import type { MultipartErrorData } from '../interfaces'; +import { MultipartErrorReason } from '../enums'; + /** * Maximum boundary length per RFC 2046 Section 5.1.1. */ diff --git a/packages/multipart/src/parser/callbacks.ts b/packages/multipart/src/parser/callbacks.ts index c23d913..b3fb25f 100644 --- a/packages/multipart/src/parser/callbacks.ts +++ b/packages/multipart/src/parser/callbacks.ts @@ -1,8 +1,8 @@ import type { MultipartFile } from '../interfaces'; - -import { MultipartFieldImpl } from './part'; import type { PartQueue } from './part-queue'; + import { noop } from '../constants'; +import { MultipartFieldImpl } from './part'; import { MultipartFileImpl, BufferedMultipartFile } from './streaming-part'; // ── Interfaces ───────────────────────────────────────────────────── @@ -46,12 +46,7 @@ class BufferingFileWriter implements FileWriter { private readonly contentType: string; private readonly files: Map; - constructor( - fieldName: string, - filename: string, - contentType: string, - files: Map, - ) { + constructor(fieldName: string, filename: string, contentType: string, files: Map) { this.fieldName = fieldName; this.filename = filename; this.contentType = contentType; @@ -73,12 +68,7 @@ class BufferingFileWriter implements FileWriter { data = Buffer.concat(this.chunks); } - const file = new BufferedMultipartFile( - this.fieldName, - this.filename, - this.contentType, - data, - ); + const file = new BufferedMultipartFile(this.fieldName, this.filename, this.contentType, data); const existing = this.files.get(this.fieldName); @@ -144,7 +134,11 @@ class StreamingFileWriter implements FileWriter { } abort(reason?: unknown): void { - try { this.writer.abort(reason).catch(noop); } catch { /* already released */ } + try { + this.writer.abort(reason).catch(noop); + } catch { + /* already released */ + } } } @@ -167,12 +161,7 @@ export class StreamingCallbacks implements ParserCallbacks { const transform = new TransformStream(); const writer = transform.writable.getWriter(); - const filePart = new MultipartFileImpl( - name, - filename, - contentType, - transform.readable, - ); + const filePart = new MultipartFileImpl(name, filename, contentType, transform.readable); this.queue.push(filePart); diff --git a/packages/multipart/src/parser/header-parser.spec.ts b/packages/multipart/src/parser/header-parser.spec.ts index 0100238..151f907 100644 --- a/packages/multipart/src/parser/header-parser.spec.ts +++ b/packages/multipart/src/parser/header-parser.spec.ts @@ -1,8 +1,8 @@ -import { describe, test, expect } from 'bun:test'; import { isErr } from '@zipbul/result'; +import { describe, test, expect } from 'bun:test'; -import { parsePartHeaders } from './header-parser'; import { MultipartErrorReason } from '../enums'; +import { parsePartHeaders } from './header-parser'; describe('parsePartHeaders', () => { // ── 1. Basic field (name only, no filename) ───────────────────────── @@ -20,10 +20,7 @@ describe('parsePartHeaders', () => { // ── 2. File headers (name + filename + Content-Type) ──────────────── test('parses file headers with name, filename, and Content-Type', () => { - const headers = [ - 'Content-Disposition: form-data; name="file"; filename="photo.png"', - 'Content-Type: image/png', - ].join('\r\n'); + const headers = ['Content-Disposition: form-data; name="file"; filename="photo.png"', 'Content-Type: image/png'].join('\r\n'); const result = parsePartHeaders(headers); expect(isErr(result)).toBe(false); @@ -47,9 +44,7 @@ describe('parsePartHeaders', () => { // ── 4. Unquoted filename value ────────────────────────────────────── test('handles unquoted filename value', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name="file"; filename=report.pdf', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name="file"; filename=report.pdf'); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.filename).toBe('report.pdf'); @@ -59,9 +54,7 @@ describe('parsePartHeaders', () => { // ── 5. Empty filename ("") ────────────────────────────────────────── test('handles empty quoted filename as empty string', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name="file"; filename=""', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name="file"; filename=""'); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.filename).toBe(''); @@ -82,9 +75,7 @@ describe('parsePartHeaders', () => { // ── 7. Missing name parameter ────────────────────────────────────── test('returns MalformedHeader error when name parameter is missing', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; filename="file.txt"', - ); + const result = parsePartHeaders('Content-Disposition: form-data; filename="file.txt"'); expect(isErr(result)).toBe(true); if (isErr(result)) { expect(result.data.reason).toBe(MultipartErrorReason.MalformedHeader); @@ -95,9 +86,7 @@ describe('parsePartHeaders', () => { // ── 8. Case-insensitive header names ──────────────────────────────── test('handles uppercase CONTENT-DISPOSITION', () => { - const result = parsePartHeaders( - 'CONTENT-DISPOSITION: form-data; name="test"', - ); + const result = parsePartHeaders('CONTENT-DISPOSITION: form-data; name="test"'); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.name).toBe('test'); @@ -105,9 +94,7 @@ describe('parsePartHeaders', () => { }); test('handles lowercase content-disposition', () => { - const result = parsePartHeaders( - 'content-disposition: form-data; name="test"', - ); + const result = parsePartHeaders('content-disposition: form-data; name="test"'); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.name).toBe('test'); @@ -115,10 +102,7 @@ describe('parsePartHeaders', () => { }); test('handles mixed-case content-type', () => { - const headers = [ - 'Content-Disposition: form-data; name="f"; filename="a.txt"', - 'CONTENT-TYPE: application/json', - ].join('\r\n'); + const headers = ['Content-Disposition: form-data; name="f"; filename="a.txt"', 'CONTENT-TYPE: application/json'].join('\r\n'); const result = parsePartHeaders(headers); expect(isErr(result)).toBe(false); @@ -130,9 +114,7 @@ describe('parsePartHeaders', () => { // ── 9. Extra whitespace in header values ──────────────────────────── test('handles extra whitespace around header values', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name="spaced" ', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name="spaced" '); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.name).toBe('spaced'); @@ -140,10 +122,7 @@ describe('parsePartHeaders', () => { }); test('handles extra whitespace around Content-Type value', () => { - const headers = [ - 'Content-Disposition: form-data; name="f"', - 'Content-Type: text/html ', - ].join('\r\n'); + const headers = ['Content-Disposition: form-data; name="f"', 'Content-Type: text/html '].join('\r\n'); const result = parsePartHeaders(headers); expect(isErr(result)).toBe(false); @@ -174,10 +153,9 @@ describe('parsePartHeaders', () => { // ── 11. Bare \n line endings (M4 fix) ─────────────────────────────── test('parses headers with bare \\n line endings', () => { - const headers = [ - 'Content-Disposition: form-data; name="field"; filename="doc.pdf"', - 'Content-Type: application/pdf', - ].join('\n'); + const headers = ['Content-Disposition: form-data; name="field"; filename="doc.pdf"', 'Content-Type: application/pdf'].join( + '\n', + ); const result = parsePartHeaders(headers); expect(isErr(result)).toBe(false); @@ -192,9 +170,7 @@ describe('parsePartHeaders', () => { test('parses headers with mixed \\r\\n and \\n line endings', () => { const headers = - 'Content-Disposition: form-data; name="mix"; filename="f.txt"\r\n' + - 'Content-Type: text/csv\n' + - 'X-Extra: ignored'; + 'Content-Disposition: form-data; name="mix"; filename="f.txt"\r\n' + 'Content-Type: text/csv\n' + 'X-Extra: ignored'; const result = parsePartHeaders(headers); expect(isErr(result)).toBe(false); @@ -208,9 +184,7 @@ describe('parsePartHeaders', () => { // ── 13. Escaped quotes in filename (M1 fix) ──────────────────────── test('handles escaped quotes in filename', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name="file"; filename="file\\"name.txt"', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name="file"; filename="file\\"name.txt"'); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.filename).toBe('file"name.txt'); @@ -220,9 +194,7 @@ describe('parsePartHeaders', () => { // ── 14. Escaped quotes in name ────────────────────────────────────── test('handles escaped quotes in name', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name="field\\"1"', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name="field\\"1"'); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.name).toBe('field"1'); @@ -232,9 +204,7 @@ describe('parsePartHeaders', () => { // ── 15. Null bytes in filename (M3 fix) ───────────────────────────── test('strips null bytes from filename', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name="file"; filename="evil.php\0.jpg"', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name="file"; filename="evil.php\0.jpg"'); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.filename).toBe('evil.php.jpg'); @@ -244,9 +214,7 @@ describe('parsePartHeaders', () => { // ── 16. Null bytes in name ────────────────────────────────────────── test('strips null bytes from name', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name="field\0name"', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name="field\0name"'); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.name).toBe('fieldname'); @@ -256,9 +224,7 @@ describe('parsePartHeaders', () => { // ── 17. Empty name (M5 fix) ───────────────────────────────────────── test('returns MalformedHeader error when name is empty string', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name=""', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name=""'); expect(isErr(result)).toBe(true); if (isErr(result)) { expect(result.data.reason).toBe(MultipartErrorReason.MalformedHeader); @@ -268,9 +234,7 @@ describe('parsePartHeaders', () => { // ── 18. Non form-data directive (L4 fix) ──────────────────────────── test('returns MalformedHeader error for attachment disposition', () => { - const result = parsePartHeaders( - 'Content-Disposition: attachment; name="x"', - ); + const result = parsePartHeaders('Content-Disposition: attachment; name="x"'); expect(isErr(result)).toBe(true); if (isErr(result)) { expect(result.data.reason).toBe(MultipartErrorReason.MalformedHeader); @@ -278,9 +242,7 @@ describe('parsePartHeaders', () => { }); test('returns MalformedHeader error for inline disposition', () => { - const result = parsePartHeaders( - 'Content-Disposition: inline; name="x"', - ); + const result = parsePartHeaders('Content-Disposition: inline; name="x"'); expect(isErr(result)).toBe(true); if (isErr(result)) { expect(result.data.reason).toBe(MultipartErrorReason.MalformedHeader); @@ -290,10 +252,7 @@ describe('parsePartHeaders', () => { // ── 19. Header line without colon → silently skipped ──────────────── test('skips header lines without colon and still parses if Content-Disposition is present', () => { - const headers = [ - 'this-line-has-no-colon', - 'Content-Disposition: form-data; name="valid"', - ].join('\r\n'); + const headers = ['this-line-has-no-colon', 'Content-Disposition: form-data; name="valid"'].join('\r\n'); const result = parsePartHeaders(headers); expect(isErr(result)).toBe(false); @@ -303,10 +262,7 @@ describe('parsePartHeaders', () => { }); test('returns error when only non-colon lines are present', () => { - const headers = [ - 'no-colon-line-one', - 'no-colon-line-two', - ].join('\r\n'); + const headers = ['no-colon-line-one', 'no-colon-line-two'].join('\r\n'); const result = parsePartHeaders(headers); expect(isErr(result)).toBe(true); @@ -337,10 +293,7 @@ describe('parsePartHeaders', () => { // ── 21. Content-Type with charset ─────────────────────────────────── test('preserves full Content-Type value including charset', () => { - const headers = [ - 'Content-Disposition: form-data; name="text"', - 'Content-Type: text/plain; charset=utf-8', - ].join('\r\n'); + const headers = ['Content-Disposition: form-data; name="text"', 'Content-Type: text/plain; charset=utf-8'].join('\r\n'); const result = parsePartHeaders(headers); expect(isErr(result)).toBe(false); @@ -352,9 +305,7 @@ describe('parsePartHeaders', () => { // ── 22. Name with special characters ──────────────────────────────── test('handles name containing special characters like brackets', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name="field[0]"', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name="field[0]"'); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.name).toBe('field[0]'); @@ -362,9 +313,7 @@ describe('parsePartHeaders', () => { }); test('handles name containing dots and dashes', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name="user.address.line-1"', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name="user.address.line-1"'); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.name).toBe('user.address.line-1'); @@ -374,9 +323,7 @@ describe('parsePartHeaders', () => { // ── 23. Filename with path characters ─────────────────────────────── test('preserves filename with path separators as-is', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name="file"; filename="uploads/photo.jpg"', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name="file"; filename="uploads/photo.jpg"'); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.filename).toBe('uploads/photo.jpg'); @@ -384,9 +331,7 @@ describe('parsePartHeaders', () => { }); test('preserves filename with backslash path separators', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name="file"; filename="C:\\\\Users\\\\photo.jpg"', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name="file"; filename="C:\\\\Users\\\\photo.jpg"'); expect(isErr(result)).toBe(false); if (!isErr(result)) { // Backslashes after the escape-unescape pass: \\\\ → \\, so the value is C:\Users\photo.jpg @@ -440,9 +385,7 @@ describe('parsePartHeaders', () => { // ── 27. Name consisting entirely of null bytes → empty after strip ── test('returns MalformedHeader error when name is only null bytes', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name="\0\0\0"', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name="\0\0\0"'); expect(isErr(result)).toBe(true); if (isErr(result)) { expect(result.data.reason).toBe(MultipartErrorReason.MalformedHeader); @@ -452,10 +395,7 @@ describe('parsePartHeaders', () => { // ── 28. Tab character between colon and value (RFC 7230 OWS) ──────── test('handles tab character as OWS between colon and value', () => { - const headers = [ - 'Content-Disposition:\tform-data; name="tabbed"', - 'Content-Type:\t\ttext/html', - ].join('\r\n'); + const headers = ['Content-Disposition:\tform-data; name="tabbed"', 'Content-Type:\t\ttext/html'].join('\r\n'); const result = parsePartHeaders(headers); expect(isErr(result)).toBe(false); @@ -468,9 +408,7 @@ describe('parsePartHeaders', () => { // ── 29. Uppercase parameter names (case-insensitive) ──────────────── test('handles uppercase Name= parameter', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; Name="field1"', - ); + const result = parsePartHeaders('Content-Disposition: form-data; Name="field1"'); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.name).toBe('field1'); @@ -478,9 +416,7 @@ describe('parsePartHeaders', () => { }); test('handles uppercase Filename= parameter', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name="f"; Filename="UPPER.txt"', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name="f"; Filename="UPPER.txt"'); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.filename).toBe('UPPER.txt'); @@ -490,9 +426,7 @@ describe('parsePartHeaders', () => { // ── 30. Semicolons inside quoted filename ─────────────────────────── test('preserves semicolons inside quoted filename', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name="file"; filename="report;2024;final.csv"', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name="file"; filename="report;2024;final.csv"'); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.filename).toBe('report;2024;final.csv'); @@ -502,9 +436,7 @@ describe('parsePartHeaders', () => { // ── 31. Non-ASCII UTF-8 characters in filename ───────────────────── test('preserves non-ASCII UTF-8 characters in filename', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name="file"; filename="resume_\uD55C\uAD6D\uC5B4.pdf"', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name="file"; filename="resume_\uD55C\uAD6D\uC5B4.pdf"'); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.filename).toBe('resume_\uD55C\uAD6D\uC5B4.pdf'); @@ -515,7 +447,7 @@ describe('parsePartHeaders', () => { test('ignores filename*= and uses filename= value', () => { const result = parsePartHeaders( - "Content-Disposition: form-data; name=\"file\"; filename=\"safe.png\"; filename*=UTF-8''backdoor.php", + 'Content-Disposition: form-data; name="file"; filename="safe.png"; filename*=UTF-8\'\'backdoor.php', ); expect(isErr(result)).toBe(false); if (!isErr(result)) { @@ -526,9 +458,7 @@ describe('parsePartHeaders', () => { // ── 33. Duplicate name= parameters: first-wins via regex ─────────── test('uses first name= parameter when duplicates are present', () => { - const result = parsePartHeaders( - 'Content-Disposition: form-data; name="first"; name="second"', - ); + const result = parsePartHeaders('Content-Disposition: form-data; name="first"; name="second"'); expect(isErr(result)).toBe(false); if (!isErr(result)) { expect(result.name).toBe('first'); diff --git a/packages/multipart/src/parser/header-parser.ts b/packages/multipart/src/parser/header-parser.ts index 2eb953b..80cca85 100644 --- a/packages/multipart/src/parser/header-parser.ts +++ b/packages/multipart/src/parser/header-parser.ts @@ -1,9 +1,11 @@ -import { err } from '@zipbul/result'; import type { Result } from '@zipbul/result'; -import { MultipartErrorReason } from '../enums'; +import { err } from '@zipbul/result'; + import type { MultipartErrorData } from '../interfaces'; +import { MultipartErrorReason } from '../enums'; + /** * Parsed Content-Disposition header fields. */ @@ -40,11 +42,11 @@ export function parsePartHeaders(headerBlock: string): Result = { function extractParam(headerValue: string, paramName: string): string | undefined { const pattern = PARAM_PATTERNS[paramName]; - if (pattern === undefined) return undefined; + if (pattern === undefined) {return undefined;} const match = headerValue.match(pattern); @@ -140,7 +142,7 @@ function extractParam(headerValue: string, paramName: string): string | undefine // match[2] is the quoted value (with escapes), match[3] is the unquoted value let value = match[2] ?? match[3]; - if (value === undefined) return undefined; + if (value === undefined) {return undefined;} // Unescape escaped characters within quoted values (e.g. \" → ") if (match[2] !== undefined) { diff --git a/packages/multipart/src/parser/state-machine.spec.ts b/packages/multipart/src/parser/state-machine.spec.ts index 4c4f23a..fd66151 100644 --- a/packages/multipart/src/parser/state-machine.spec.ts +++ b/packages/multipart/src/parser/state-machine.spec.ts @@ -1,14 +1,15 @@ import { describe, test, expect } from 'bun:test'; -import { parseMultipart } from './state-machine'; -import { PartQueue } from './part-queue'; -import { StreamingCallbacks, BufferingCallbacks } from './callbacks'; -import { BufferedMultipartFile } from './streaming-part'; -import { MultipartError } from '../interfaces'; import type { MultipartFile, MultipartPart } from '../interfaces'; +import type { ParseAllResult } from '../types'; + import { MultipartErrorReason } from '../enums'; +import { MultipartError } from '../interfaces'; import { resolveMultipartOptions } from '../options'; -import type { ParseAllResult } from '../types'; +import { StreamingCallbacks, BufferingCallbacks } from './callbacks'; +import { PartQueue } from './part-queue'; +import { parseMultipart } from './state-machine'; +import { BufferedMultipartFile } from './streaming-part'; // ── Helpers ───────────────────────────────────────────────────────── @@ -87,7 +88,9 @@ async function collectParts( parseMultipart(body, boundary, opts, callbacks) .then(() => queue.finish()) - .catch((error) => { if (!queue.abandoned) queue.fail(error); }); + .catch(error => { + if (!queue.abandoned) {queue.fail(error);} + }); const parts: MultipartPart[] = []; @@ -181,8 +184,7 @@ describe('parseMultipart', () => { test('3. file part (with filename + content-type)', async () => { const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="upload"; filename="test.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="upload"; filename="test.txt"\r\nContent-Type: text/plain', body: 'file contents here', }, ]); @@ -200,8 +202,7 @@ describe('parseMultipart', () => { const body = createBody(boundary, [ { headers: 'Content-Disposition: form-data; name="username"', body: 'John' }, { - headers: - 'Content-Disposition: form-data; name="avatar"; filename="face.png"\r\nContent-Type: image/png', + headers: 'Content-Disposition: form-data; name="avatar"; filename="face.png"\r\nContent-Type: image/png', body: 'PNG_DATA', }, { headers: 'Content-Disposition: form-data; name="bio"', body: 'Hello world' }, @@ -221,9 +222,7 @@ describe('parseMultipart', () => { }); test('5. empty body part (zero-length body)', async () => { - const body = createBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="empty"', body: '' }, - ]); + const body = createBody(boundary, [{ headers: 'Content-Disposition: form-data; name="empty"', body: '' }]); const parts = await collectParts(toStream(body), boundary, opts); expect(parts).toHaveLength(1); @@ -232,9 +231,7 @@ describe('parseMultipart', () => { }); test('6. bytes() returns Uint8Array', async () => { - const body = createBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="data"', body: 'binary' }, - ]); + const body = createBody(boundary, [{ headers: 'Content-Disposition: form-data; name="data"', body: 'binary' }]); const parts = await collectParts(toStream(body), boundary, opts); const raw = await partBytes(parts[0]!); @@ -262,9 +259,7 @@ describe('parseMultipart', () => { describe('chunked input (cross-chunk boundary splitting)', () => { test('8. very small chunks (5 bytes) — boundary split across chunks', async () => { - const body = createBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="field"', body: 'value' }, - ]); + const body = createBody(boundary, [{ headers: 'Content-Disposition: form-data; name="field"', body: 'value' }]); const parts = await collectParts(toChunkedStream(body, 5), boundary, opts); expect(parts).toHaveLength(1); @@ -273,9 +268,7 @@ describe('parseMultipart', () => { }); test('9. single-byte chunks — extreme splitting', async () => { - const body = createBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="x"', body: 'y' }, - ]); + const body = createBody(boundary, [{ headers: 'Content-Disposition: form-data; name="x"', body: 'y' }]); const parts = await collectParts(toChunkedStream(body, 1), boundary, opts); expect(parts).toHaveLength(1); @@ -284,9 +277,7 @@ describe('parseMultipart', () => { }); test('10. boundary split at EVERY possible byte position', async () => { - const body = createBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="k"', body: 'val' }, - ]); + const body = createBody(boundary, [{ headers: 'Content-Disposition: form-data; name="k"', body: 'val' }]); for (let splitAt = 1; splitAt < body.length; splitAt++) { const stream = toTwoChunkStream(body, splitAt); @@ -298,9 +289,7 @@ describe('parseMultipart', () => { }); test('11. large chunk (entire body in one chunk)', async () => { - const body = createBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="big"', body: 'all at once' }, - ]); + const body = createBody(boundary, [{ headers: 'Content-Disposition: form-data; name="big"', body: 'all at once' }]); const parts = await collectParts(toStream(body), boundary, opts); expect(parts).toHaveLength(1); @@ -408,7 +397,9 @@ describe('parseMultipart', () => { parseMultipart(toStream(raw), boundary, opts, callbacks) .then(() => queue.finish()) - .catch((error) => { if (!queue.abandoned) queue.fail(error); }); + .catch(error => { + if (!queue.abandoned) {queue.fail(error);} + }); for await (const part of queue) { collectedBeforeError.push(part); @@ -433,13 +424,11 @@ describe('parseMultipart', () => { const limitOpts = resolveMultipartOptions({ maxFiles: 1, maxTotalSize: null }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f1"; filename="a.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f1"; filename="a.txt"\r\nContent-Type: text/plain', body: 'a', }, { - headers: - 'Content-Disposition: form-data; name="f2"; filename="b.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f2"; filename="b.txt"\r\nContent-Type: text/plain', body: 'b', }, ]); @@ -473,8 +462,7 @@ describe('parseMultipart', () => { const limitOpts = resolveMultipartOptions({ maxFileSize: 5, maxTotalSize: null }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f"; filename="big.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f"; filename="big.txt"\r\nContent-Type: text/plain', body: 'this is way too big for five bytes', }, ]); @@ -490,9 +478,7 @@ describe('parseMultipart', () => { test('22. FieldTooLarge (maxFieldSize exceeded)', async () => { const limitOpts = resolveMultipartOptions({ maxFieldSize: 3, maxTotalSize: null }); - const body = createBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="f"', body: 'too long for three' }, - ]); + const body = createBody(boundary, [{ headers: 'Content-Disposition: form-data; name="f"', body: 'too long for three' }]); try { await collectParts(toStream(body), boundary, limitOpts); @@ -525,8 +511,7 @@ describe('parseMultipart', () => { const limitOpts = resolveMultipartOptions({ maxHeaderSize: 20, maxTotalSize: null }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="field_with_very_long_header_that_exceeds_the_limit"', + headers: 'Content-Disposition: form-data; name="field_with_very_long_header_that_exceeds_the_limit"', body: 'value', }, ]); @@ -545,8 +530,7 @@ describe('parseMultipart', () => { const limitOpts = resolveMultipartOptions({ maxFileSize: 50, maxTotalSize: null }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f"; filename="big.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="f"; filename="big.bin"\r\nContent-Type: application/octet-stream', body: fileBody, }, ]); @@ -584,11 +568,7 @@ describe('parseMultipart', () => { describe('malformed input', () => { test('27. missing Content-Disposition → MalformedHeader', async () => { - const raw = - `--${boundary}\r\n` + - `Content-Type: text/plain\r\n\r\n` + - `body\r\n` + - `--${boundary}--\r\n`; + const raw = `--${boundary}\r\n` + `Content-Type: text/plain\r\n\r\n` + `body\r\n` + `--${boundary}--\r\n`; try { await collectParts(toStream(raw), boundary, opts); @@ -676,9 +656,7 @@ describe('parseMultipart', () => { test('33. CRLF within field values (multiline text)', async () => { const multilineValue = 'line one\r\nline two\r\nline three'; - const body = createBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="message"', body: multilineValue }, - ]); + const body = createBody(boundary, [{ headers: 'Content-Disposition: form-data; name="message"', body: multilineValue }]); const parts = await collectParts(toStream(body), boundary, opts); expect(parts).toHaveLength(1); @@ -689,8 +667,7 @@ describe('parseMultipart', () => { const largePart = 'X'.repeat(1024 * 1024); // 1 MiB const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="large"; filename="big.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="large"; filename="big.bin"\r\nContent-Type: application/octet-stream', body: largePart, }, ]); @@ -809,9 +786,7 @@ describe('parseMultipart', () => { test('41. maxFieldSize: field exactly at limit succeeds', async () => { const fieldValue = 'A'.repeat(50); const limitOpts = resolveMultipartOptions({ maxFieldSize: 50, maxTotalSize: null }); - const body = createBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="exact"', body: fieldValue }, - ]); + const body = createBody(boundary, [{ headers: 'Content-Disposition: form-data; name="exact"', body: fieldValue }]); const parts = await collectParts(toStream(body), boundary, limitOpts); expect(parts).toHaveLength(1); @@ -821,9 +796,7 @@ describe('parseMultipart', () => { test('42. maxFieldSize: field 1 byte over limit fails with FieldTooLarge', async () => { const fieldValue = 'A'.repeat(51); const limitOpts = resolveMultipartOptions({ maxFieldSize: 50, maxTotalSize: null }); - const body = createBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="over"', body: fieldValue }, - ]); + const body = createBody(boundary, [{ headers: 'Content-Disposition: form-data; name="over"', body: fieldValue }]); try { await collectParts(toStream(body), boundary, limitOpts); @@ -835,9 +808,7 @@ describe('parseMultipart', () => { }); test('43. maxTotalSize: body exactly at limit succeeds', async () => { - const body = createBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="f"', body: 'hello' }, - ]); + const body = createBody(boundary, [{ headers: 'Content-Disposition: form-data; name="f"', body: 'hello' }]); const totalBytes = new TextEncoder().encode(body).length; const limitOpts = resolveMultipartOptions({ maxTotalSize: totalBytes }); @@ -847,9 +818,7 @@ describe('parseMultipart', () => { }); test('44. maxTotalSize: body 1 byte over limit fails', async () => { - const body = createBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="f"', body: 'hello' }, - ]); + const body = createBody(boundary, [{ headers: 'Content-Disposition: form-data; name="f"', body: 'hello' }]); const totalBytes = new TextEncoder().encode(body).length; const limitOpts = resolveMultipartOptions({ maxTotalSize: totalBytes - 1 }); @@ -903,9 +872,7 @@ describe('parseMultipart', () => { expect(header.length).toBe(targetSize); const limitOpts = resolveMultipartOptions({ maxHeaderSize: targetSize, maxTotalSize: null }); - const body = createBody(boundary, [ - { headers: header, body: 'value' }, - ]); + const body = createBody(boundary, [{ headers: header, body: 'value' }]); const parts = await collectParts(toStream(body), boundary, limitOpts); expect(parts).toHaveLength(1); @@ -923,9 +890,7 @@ describe('parseMultipart', () => { expect(header.length).toBe(targetSize + 1); const limitOpts = resolveMultipartOptions({ maxHeaderSize: targetSize, maxTotalSize: null }); - const body = createBody(boundary, [ - { headers: header, body: 'value' }, - ]); + const body = createBody(boundary, [{ headers: header, body: 'value' }]); try { await collectParts(toStream(body), boundary, limitOpts); @@ -970,8 +935,7 @@ describe('parseMultipart', () => { const largeValue = 'ABCDEFGHIJ'.repeat(50); // 500 bytes const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="big"; filename="data.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="big"; filename="data.bin"\r\nContent-Type: application/octet-stream', body: largeValue, }, ]); @@ -1038,11 +1002,7 @@ describe('parseMultipart', () => { }); test('54. final boundary without trailing CRLF — still parsed correctly', async () => { - const raw = - `--${boundary}\r\n` + - `Content-Disposition: form-data; name="field"\r\n\r\n` + - `value\r\n` + - `--${boundary}--`; + const raw = `--${boundary}\r\n` + `Content-Disposition: form-data; name="field"\r\n\r\n` + `value\r\n` + `--${boundary}--`; const parts = await collectParts(toStream(raw), boundary, opts); expect(parts).toHaveLength(1); @@ -1062,8 +1022,7 @@ describe('parseMultipart', () => { }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f"; filename="big.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="f"; filename="big.bin"\r\nContent-Type: application/octet-stream', body: fileBody, }, ]); @@ -1082,9 +1041,7 @@ describe('parseMultipart', () => { describe('BufferingCallbacks', () => { test('56. single field collected into fields map', async () => { - const body = createBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="field1"', body: 'hello' }, - ]); + const body = createBody(boundary, [{ headers: 'Content-Disposition: form-data; name="field1"', body: 'hello' }]); const result = await collectPartsBuffered(toStream(body), boundary, opts); expect(result.fields.get('field1')).toEqual(['hello']); @@ -1105,8 +1062,7 @@ describe('parseMultipart', () => { test('58. file collected into files map with correct data', async () => { const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="upload"; filename="test.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="upload"; filename="test.txt"\r\nContent-Type: text/plain', body: 'file contents here', }, ]); @@ -1126,8 +1082,7 @@ describe('parseMultipart', () => { const body = createBody(boundary, [ { headers: 'Content-Disposition: form-data; name="username"', body: 'John' }, { - headers: - 'Content-Disposition: form-data; name="avatar"; filename="face.png"\r\nContent-Type: image/png', + headers: 'Content-Disposition: form-data; name="avatar"; filename="face.png"\r\nContent-Type: image/png', body: 'PNG_DATA', }, { headers: 'Content-Disposition: form-data; name="bio"', body: 'Hello world' }, @@ -1167,8 +1122,7 @@ describe('parseMultipart', () => { const body = createBody(boundary, [ { headers: 'Content-Disposition: form-data; name="chunked"', body: 'chunk test value' }, { - headers: - 'Content-Disposition: form-data; name="f"; filename="c.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f"; filename="c.txt"\r\nContent-Type: text/plain', body: 'chunked file data', }, ]); @@ -1183,13 +1137,11 @@ describe('parseMultipart', () => { test('63. multiple files with same name', async () => { const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="docs"; filename="a.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="docs"; filename="a.txt"\r\nContent-Type: text/plain', body: 'file A', }, { - headers: - 'Content-Disposition: form-data; name="docs"; filename="b.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="docs"; filename="b.txt"\r\nContent-Type: text/plain', body: 'file B', }, ]); @@ -1209,13 +1161,11 @@ describe('parseMultipart', () => { const limitOpts = resolveMultipartOptions({ maxFiles: 1, maxTotalSize: null }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f1"; filename="a.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f1"; filename="a.txt"\r\nContent-Type: text/plain', body: 'a', }, { - headers: - 'Content-Disposition: form-data; name="f2"; filename="b.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f2"; filename="b.txt"\r\nContent-Type: text/plain', body: 'b', }, ]); @@ -1249,8 +1199,7 @@ describe('parseMultipart', () => { const limitOpts = resolveMultipartOptions({ maxFileSize: 5, maxTotalSize: null }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f"; filename="big.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f"; filename="big.txt"\r\nContent-Type: text/plain', body: 'this is way too big for five bytes', }, ]); @@ -1266,9 +1215,7 @@ describe('parseMultipart', () => { test('67. FieldTooLarge via buffering path', async () => { const limitOpts = resolveMultipartOptions({ maxFieldSize: 3, maxTotalSize: null }); - const body = createBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="f"', body: 'too long for three' }, - ]); + const body = createBody(boundary, [{ headers: 'Content-Disposition: form-data; name="f"', body: 'too long for three' }]); try { await collectPartsBuffered(toStream(body), boundary, limitOpts); @@ -1301,8 +1248,7 @@ describe('parseMultipart', () => { const limitOpts = resolveMultipartOptions({ maxHeaderSize: 20, maxTotalSize: null }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="field_with_very_long_header_that_exceeds_the_limit"', + headers: 'Content-Disposition: form-data; name="field_with_very_long_header_that_exceeds_the_limit"', body: 'value', }, ]); @@ -1416,8 +1362,7 @@ describe('parseMultipart', () => { }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="avatar"; filename="hack.exe"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="avatar"; filename="hack.exe"\r\nContent-Type: application/octet-stream', body: 'data', }, ]); @@ -1438,8 +1383,7 @@ describe('parseMultipart', () => { }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="avatar"; filename="hack.exe"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="avatar"; filename="hack.exe"\r\nContent-Type: application/octet-stream', body: 'data', }, ]); @@ -1460,8 +1404,7 @@ describe('parseMultipart', () => { }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="avatar"; filename="face.png"\r\nContent-Type: image/png', + headers: 'Content-Disposition: form-data; name="avatar"; filename="face.png"\r\nContent-Type: image/png', body: 'PNG_DATA', }, ]); @@ -1478,8 +1421,7 @@ describe('parseMultipart', () => { }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="other"; filename="doc.pdf"\r\nContent-Type: application/pdf', + headers: 'Content-Disposition: form-data; name="other"; filename="doc.pdf"\r\nContent-Type: application/pdf', body: 'PDF_DATA', }, ]); @@ -1496,8 +1438,7 @@ describe('parseMultipart', () => { }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="avatar"; filename="face.png"\r\nContent-Type: image/png; charset=utf-8', + headers: 'Content-Disposition: form-data; name="avatar"; filename="face.png"\r\nContent-Type: image/png; charset=utf-8', body: 'PNG_DATA', }, ]); @@ -1514,8 +1455,7 @@ describe('parseMultipart', () => { }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="doc"; filename="readme.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="doc"; filename="readme.txt"\r\nContent-Type: text/plain', body: 'hello', }, ]); @@ -1532,8 +1472,7 @@ describe('parseMultipart', () => { }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="avatar"; filename="face.gif"\r\nContent-Type: image/gif; charset=utf-8', + headers: 'Content-Disposition: form-data; name="avatar"; filename="face.gif"\r\nContent-Type: image/gif; charset=utf-8', body: 'GIF_DATA', }, ]); @@ -1573,8 +1512,7 @@ describe('parseMultipart', () => { const limitOpts = resolveMultipartOptions({ maxFileSize: 50, maxTotalSize: null }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f"; filename="exact.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="f"; filename="exact.bin"\r\nContent-Type: application/octet-stream', body: fileBody, }, ]); @@ -1589,8 +1527,7 @@ describe('parseMultipart', () => { const limitOpts = resolveMultipartOptions({ maxFileSize: 50, maxTotalSize: null }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f"; filename="over.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="f"; filename="over.bin"\r\nContent-Type: application/octet-stream', body: fileBody, }, ]); @@ -1609,8 +1546,7 @@ describe('parseMultipart', () => { const limitOpts = resolveMultipartOptions({ maxFileSize: 50, maxTotalSize: null }); const body = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f"; filename="exact.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="f"; filename="exact.bin"\r\nContent-Type: application/octet-stream', body: fileBody, }, ]); @@ -1622,8 +1558,7 @@ describe('parseMultipart', () => { // 1 byte over const overBody = createBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f"; filename="over.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="f"; filename="over.bin"\r\nContent-Type: application/octet-stream', body: 'A'.repeat(51), }, ]); diff --git a/packages/multipart/src/parser/state-machine.ts b/packages/multipart/src/parser/state-machine.ts index 62785c5..b06c7bd 100644 --- a/packages/multipart/src/parser/state-machine.ts +++ b/packages/multipart/src/parser/state-machine.ts @@ -1,15 +1,14 @@ import { isErr } from '@zipbul/result'; -import { CRLF, CRLFCRLF, EMPTY_BUF, noop } from '../constants'; -import { MultipartErrorReason } from '../enums'; -import { MultipartError } from '../interfaces'; import type { AllowedMimeTypes } from '../interfaces'; import type { ResolvedMultipartOptions } from '../types'; - import type { FileWriter, ParserCallbacks } from './callbacks'; import type { PartHeaders } from './header-parser'; -import { parsePartHeaders } from './header-parser'; +import { CRLF, CRLFCRLF, EMPTY_BUF, noop } from '../constants'; +import { MultipartErrorReason } from '../enums'; +import { MultipartError } from '../interfaces'; +import { parsePartHeaders } from './header-parser'; /** * FSM states for the multipart parser. @@ -242,11 +241,7 @@ export async function parseMultipart( ); } - fileWriter = callbacks.onFileStart( - currentHeaders.name, - currentHeaders.filename!, - currentHeaders.contentType, - ); + fileWriter = callbacks.onFileStart(currentHeaders.name, currentHeaders.filename!, currentHeaders.contentType); } continue; @@ -375,7 +370,11 @@ export async function parseMultipart( } // Ensure the stream reader is released on any error - try { body.cancel().catch(noop); } catch { /* already released */ } + try { + body.cancel().catch(noop); + } catch { + /* already released */ + } // If consumer has abandoned, swallow the error if (callbacks.abandoned) { @@ -405,7 +404,11 @@ export async function parseMultipart( fileWriter = undefined; } - try { body.cancel().catch(noop); } catch { /* ignore */ } + try { + body.cancel().catch(noop); + } catch { + /* ignore */ + } return; } @@ -445,11 +448,7 @@ function keepTail(buf: Buffer, maxLen: number): Buffer { /** * Checks projected body size BEFORE allocation to prevent memory spikes. */ -function checkBodyLimitProjected( - projectedSize: number, - headers: PartHeaders, - options: ResolvedMultipartOptions, -): void { +function checkBodyLimitProjected(projectedSize: number, headers: PartHeaders, options: ResolvedMultipartOptions): void { const isFile = headers.filename !== undefined; if (isFile && projectedSize > options.maxFileSize) { @@ -486,7 +485,7 @@ function checkAllowedMimeType( const lower = contentType.split(';', 1)[0]!.trim().toLowerCase(); - if (!allowedTypes.some((t) => lower === t.split(';', 1)[0]!.trim().toLowerCase())) { + if (!allowedTypes.some(t => lower === t.split(';', 1)[0]!.trim().toLowerCase())) { throw new MultipartError( { reason: MultipartErrorReason.MimeTypeNotAllowed, diff --git a/packages/multipart/src/parser/streaming-part.spec.ts b/packages/multipart/src/parser/streaming-part.spec.ts index 94292a6..5fd1e10 100644 --- a/packages/multipart/src/parser/streaming-part.spec.ts +++ b/packages/multipart/src/parser/streaming-part.spec.ts @@ -4,7 +4,7 @@ import { BufferedMultipartFile, MultipartFileImpl } from './streaming-part'; const encoder = new TextEncoder(); -function makeStream(data: Uint8Array): { +function makeStream(_data: Uint8Array): { readable: ReadableStream; writer: WritableStreamDefaultWriter; } { @@ -133,7 +133,11 @@ describe('MultipartFileImpl', () => { expect(written).toBe(data.length); expect(await Bun.file(tmpPath).text()).toBe('save-to-test'); } finally { - try { await Bun.file(tmpPath).unlink?.(); } catch { /* ignore */ } + try { + await Bun.file(tmpPath).unlink?.(); + } catch { + /* ignore */ + } } }); @@ -231,11 +235,11 @@ describe('BufferedMultipartFile', () => { // Both should be readable const chunks1: Uint8Array[] = []; - for await (const c of stream1) chunks1.push(c); + for await (const c of stream1) {chunks1.push(c);} const chunks2: Uint8Array[] = []; - for await (const c of stream2) chunks2.push(c); + for await (const c of stream2) {chunks2.push(c);} expect(new TextDecoder().decode(chunks1[0]!)).toBe('repeat'); expect(new TextDecoder().decode(chunks2[0]!)).toBe('repeat'); @@ -260,7 +264,11 @@ describe('BufferedMultipartFile', () => { expect(written).toBe(data.length); expect(await Bun.file(tmpPath).text()).toBe('buffered-save'); } finally { - try { await Bun.file(tmpPath).unlink?.(); } catch { /* ignore */ } + try { + await Bun.file(tmpPath).unlink?.(); + } catch { + /* ignore */ + } } }); diff --git a/packages/multipart/src/parser/streaming-part.ts b/packages/multipart/src/parser/streaming-part.ts index 9831f9a..56a9b84 100644 --- a/packages/multipart/src/parser/streaming-part.ts +++ b/packages/multipart/src/parser/streaming-part.ts @@ -20,12 +20,7 @@ export class MultipartFileImpl implements MultipartFile { private readonly readable: ReadableStream; private consumed = false; - constructor( - name: string, - filename: string, - contentType: string, - readable: ReadableStream, - ) { + constructor(name: string, filename: string, contentType: string, readable: ReadableStream) { this.name = name; this.filename = filename; this.contentType = contentType; @@ -60,8 +55,8 @@ export class MultipartFileImpl implements MultipartFile { totalLen += chunk.length; } - if (chunks.length === 0) return new Uint8Array(0); - if (chunks.length === 1) return chunks[0]!; + if (chunks.length === 0) {return new Uint8Array(0);} + if (chunks.length === 1) {return chunks[0]!;} const result = new Uint8Array(totalLen); let offset = 0; @@ -106,14 +101,17 @@ export class MultipartFileImpl implements MultipartFile { * @internal Called by {@link Multipart.parse} between part yields. */ drainIfUnconsumed(): void { - if (this.consumed) return; + if (this.consumed) {return;} this.consumed = true; const reader = this.readable.getReader(); const pump = (): void => { - reader.read().then(({ done }) => { - if (!done) pump(); - }).catch(() => {}); + reader + .read() + .then(({ done }) => { + if (!done) {pump();} + }) + .catch(() => {}); }; pump(); @@ -175,10 +173,7 @@ export class BufferedMultipartFile implements MultipartFile { } public async arrayBuffer(): Promise { - return this.data.buffer.slice( - this.data.byteOffset, - this.data.byteOffset + this.data.byteLength, - ) as ArrayBuffer; + return this.data.buffer.slice(this.data.byteOffset, this.data.byteOffset + this.data.byteLength) as ArrayBuffer; } public async saveTo(path: string): Promise { diff --git a/packages/multipart/src/sanitize.spec.ts b/packages/multipart/src/sanitize.spec.ts index 6e274a6..d2e8f5f 100644 --- a/packages/multipart/src/sanitize.spec.ts +++ b/packages/multipart/src/sanitize.spec.ts @@ -34,9 +34,7 @@ describe('sanitizeFilename', () => { }); test('replaces : " | ? *', () => { - expect(sanitizeFilename('file:name"with|bad?chars*.txt')).toBe( - 'file_name_with_bad_chars_.txt', - ); + expect(sanitizeFilename('file:name"with|bad?chars*.txt')).toBe('file_name_with_bad_chars_.txt'); }); test('removes null bytes', () => { diff --git a/packages/multipart/src/sanitize.ts b/packages/multipart/src/sanitize.ts index 16ec332..4ec9a22 100644 --- a/packages/multipart/src/sanitize.ts +++ b/packages/multipart/src/sanitize.ts @@ -42,10 +42,7 @@ const WINDOWS_RESERVED_RE = /^(con|prn|aux|nul|com\d|lpt\d)$/i; * sanitizeFilename('...') // undefined * ``` */ -export function sanitizeFilename( - filename: string, - options?: SanitizeFilenameOptions, -): string | undefined { +export function sanitizeFilename(filename: string, options?: SanitizeFilenameOptions): string | undefined { const maxLength = options?.maxLength ?? 255; const replacement = options?.replacement ?? '_'; diff --git a/packages/multipart/test/e2e/server.test.ts b/packages/multipart/test/e2e/server.test.ts index 752a571..35eeb04 100644 --- a/packages/multipart/test/e2e/server.test.ts +++ b/packages/multipart/test/e2e/server.test.ts @@ -1,6 +1,7 @@ -import { afterAll, describe, expect, test } from 'bun:test'; import type { Server } from 'bun'; +import { afterAll, describe, expect, test } from 'bun:test'; + import { MultipartErrorReason } from '../../src/enums'; import { MultipartError } from '../../src/interfaces'; import { Multipart } from '../../src/multipart'; @@ -24,10 +25,7 @@ function startServer(): Server { result[key] = values.length === 1 ? values[0] : values; } - const fileInfo: Record< - string, - { filename: string | undefined; size: number; contentType: string } - > = {}; + const fileInfo: Record = {}; for (const [key, parts] of files) { const last = parts[parts.length - 1]!; @@ -260,8 +258,8 @@ describe('multipart e2e server', () => { expect(res.status).toBe(200); } - const bodies = await Promise.all(responses.map((r) => r.json())); - const indices = bodies.map((b) => b.index).sort(); + const bodies = await Promise.all(responses.map(r => r.json())); + const indices = bodies.map(b => b.index).sort(); expect(indices).toEqual(['0', '1', '2', '3', '4']); diff --git a/packages/multipart/test/e2e/streaming.test.ts b/packages/multipart/test/e2e/streaming.test.ts index 78c239e..559ae15 100644 --- a/packages/multipart/test/e2e/streaming.test.ts +++ b/packages/multipart/test/e2e/streaming.test.ts @@ -1,6 +1,7 @@ -import { afterAll, describe, expect, test } from 'bun:test'; import type { Server } from 'bun'; +import { afterAll, describe, expect, test } from 'bun:test'; + import { MultipartError } from '../../src/interfaces'; import { Multipart } from '../../src/multipart'; @@ -136,12 +137,8 @@ describe('multipart e2e streaming', () => { expect(json.count).toBe(3); - const fieldParts = json.parts.filter( - (p: { filename?: string }) => p.filename === undefined || p.filename === null, - ); - const fileParts = json.parts.filter( - (p: { filename?: string }) => p.filename !== undefined && p.filename !== null, - ); + const fieldParts = json.parts.filter((p: { filename?: string }) => p.filename === undefined || p.filename === null); + const fileParts = json.parts.filter((p: { filename?: string }) => p.filename !== undefined && p.filename !== null); expect(fieldParts.length).toBe(2); expect(fileParts.length).toBe(1); @@ -154,11 +151,7 @@ describe('multipart e2e streaming', () => { test('handles aborted request gracefully', async () => { const controller = new AbortController(); const form = new FormData(); - form.append( - 'file', - new Blob(['x'.repeat(1024 * 100)], { type: 'text/plain' }), - 'big.txt', - ); + form.append('file', new Blob(['x'.repeat(1024 * 100)], { type: 'text/plain' }), 'big.txt'); try { const promise = fetch(url('/'), { @@ -192,11 +185,7 @@ describe('multipart e2e streaming', () => { } const form = new FormData(); - form.append( - 'chunked', - new Blob([data], { type: 'application/octet-stream' }), - 'halfMB.bin', - ); + form.append('chunked', new Blob([data], { type: 'application/octet-stream' }), 'halfMB.bin'); const res = await fetch(url('/'), { method: 'POST', body: form }); diff --git a/packages/multipart/test/integration/edge-cases.test.ts b/packages/multipart/test/integration/edge-cases.test.ts index abd9621..2f930ef 100644 --- a/packages/multipart/test/integration/edge-cases.test.ts +++ b/packages/multipart/test/integration/edge-cases.test.ts @@ -1,9 +1,10 @@ import { describe, test, expect } from 'bun:test'; -import { Multipart } from '../../src/multipart'; -import { MultipartError } from '../../src/interfaces'; -import { MultipartErrorReason } from '../../src/enums'; import type { MultipartPart } from '../../src/interfaces'; + +import { MultipartErrorReason } from '../../src/enums'; +import { MultipartError } from '../../src/interfaces'; +import { Multipart } from '../../src/multipart'; import { BufferedMultipartFile } from '../../src/parser/streaming-part'; // ── Helpers ───────────────────────────────────────────────────────── @@ -32,7 +33,7 @@ async function consumeAll(gen: AsyncGenerator): Promise { for await (const part of gen) { // For file parts, we need to consume the stream to avoid backpressure deadlock if (part && typeof part === 'object' && 'isFile' in part && (part as MultipartPart).isFile) { - await ((part as MultipartPart) as import('../../src/interfaces').MultipartFile).bytes(); + await (part as MultipartPart as import('../../src/interfaces').MultipartFile).bytes(); } } } @@ -54,12 +55,12 @@ async function collectParts(gen: AsyncGenerator): Promise { - if (part.isFile) return part.text(); + if (part.isFile) {return part.text();} return part.text(); } async function partBytes(part: MultipartPart): Promise { - if (part.isFile) return part.bytes(); + if (part.isFile) {return part.bytes();} return part.bytes(); } @@ -70,9 +71,7 @@ describe('Multipart — edge cases', () => { test('handles boundary with special characters (WebKit-style)', async () => { const boundary = '----WebKitFormBoundaryABC123xyz_-.'; - const body = buildBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="field"', body: 'ok' }, - ]); + const body = buildBody(boundary, [{ headers: 'Content-Disposition: form-data; name="field"', body: 'ok' }]); const parts = await collectParts(mp.parse(createRequest(boundary, body))); @@ -91,9 +90,7 @@ describe('Multipart — edge cases', () => { test('handles whitespace-only body value', async () => { const boundary = 'ws-boundary'; - const body = buildBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="space"', body: ' \n\t ' }, - ]); + const body = buildBody(boundary, [{ headers: 'Content-Disposition: form-data; name="space"', body: ' \n\t ' }]); const parts = await collectParts(mp.parse(createRequest(boundary, body))); @@ -103,9 +100,7 @@ describe('Multipart — edge cases', () => { test('boundary-like string in body with CRLF prefix is a delimiter, without is not', async () => { const boundary = 'tricky'; - const body = buildBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="data"', body: 'some --tricky-- text' }, - ]); + const body = buildBody(boundary, [{ headers: 'Content-Disposition: form-data; name="data"', body: 'some --tricky-- text' }]); const parts = await collectParts(mp.parse(createRequest(boundary, body))); @@ -115,9 +110,7 @@ describe('Multipart — edge cases', () => { test('handles quoted boundary in Content-Type', async () => { const boundary = 'quoted-bound'; - const body = buildBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="f"', body: 'val' }, - ]); + const body = buildBody(boundary, [{ headers: 'Content-Disposition: form-data; name="f"', body: 'val' }]); const request = new Request('http://localhost/upload', { method: 'POST', @@ -181,9 +174,7 @@ describe('Multipart — edge cases', () => { test('handles very long field names (200 chars)', async () => { const boundary = 'long-name'; const longName = 'a'.repeat(200); - const body = buildBody(boundary, [ - { headers: `Content-Disposition: form-data; name="${longName}"`, body: 'val' }, - ]); + const body = buildBody(boundary, [{ headers: `Content-Disposition: form-data; name="${longName}"`, body: 'val' }]); const parts = await collectParts(mp.parse(createRequest(boundary, body))); @@ -260,12 +251,7 @@ describe('Multipart — edge cases', () => { test('empty name in Content-Disposition throws MalformedHeader', async () => { const boundary = 'empty-name'; - const raw = - `--${boundary}\r\n` + - `Content-Disposition: form-data; name=""\r\n` + - `\r\n` + - `data\r\n` + - `--${boundary}--\r\n`; + const raw = `--${boundary}\r\n` + `Content-Disposition: form-data; name=""\r\n` + `\r\n` + `data\r\n` + `--${boundary}--\r\n`; try { await consumeAll(mp.parse(createRequest(boundary, raw))); @@ -279,11 +265,7 @@ describe('Multipart — edge cases', () => { test('non form-data directive throws MalformedHeader', async () => { const boundary = 'bad-directive'; const raw = - `--${boundary}\r\n` + - `Content-Disposition: attachment; name="x"\r\n` + - `\r\n` + - `data\r\n` + - `--${boundary}--\r\n`; + `--${boundary}\r\n` + `Content-Disposition: attachment; name="x"\r\n` + `\r\n` + `data\r\n` + `--${boundary}--\r\n`; try { await consumeAll(mp.parse(createRequest(boundary, raw))); @@ -312,9 +294,7 @@ describe('Multipart — edge cases', () => { test('boundary at max length (70 chars) works', async () => { const boundary = 'B'.repeat(70); - const body = buildBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="f"', body: 'ok' }, - ]); + const body = buildBody(boundary, [{ headers: 'Content-Disposition: form-data; name="f"', body: 'ok' }]); const parts = await collectParts(mp.parse(createRequest(boundary, body))); @@ -324,9 +304,7 @@ describe('Multipart — edge cases', () => { test('boundary too long (71 chars) throws error', async () => { const boundary = 'B'.repeat(71); - const body = buildBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="f"', body: 'ok' }, - ]); + const body = buildBody(boundary, [{ headers: 'Content-Disposition: form-data; name="f"', body: 'ok' }]); try { await consumeAll(mp.parse(createRequest(boundary, body))); @@ -396,9 +374,7 @@ describe('Multipart — edge cases', () => { test('concurrent parse calls on same instance both succeed independently', async () => { const boundary1 = 'concurrent-a'; - const body1 = buildBody(boundary1, [ - { headers: 'Content-Disposition: form-data; name="x"', body: 'alpha' }, - ]); + const body1 = buildBody(boundary1, [{ headers: 'Content-Disposition: form-data; name="x"', body: 'alpha' }]); const boundary2 = 'concurrent-b'; const body2 = buildBody(boundary2, [ diff --git a/packages/multipart/test/integration/limits.test.ts b/packages/multipart/test/integration/limits.test.ts index da248cf..312b30b 100644 --- a/packages/multipart/test/integration/limits.test.ts +++ b/packages/multipart/test/integration/limits.test.ts @@ -1,10 +1,11 @@ import { describe, test, expect } from 'bun:test'; -import { Multipart } from '../../src/multipart'; -import { MultipartError } from '../../src/interfaces'; -import { MultipartErrorReason } from '../../src/enums'; import type { MultipartPart } from '../../src/interfaces'; +import { MultipartErrorReason } from '../../src/enums'; +import { MultipartError } from '../../src/interfaces'; +import { Multipart } from '../../src/multipart'; + // ── Helpers ───────────────────────────────────────────────────────── function createRequest(boundary: string, body: string | Uint8Array): Request { @@ -64,18 +65,15 @@ describe('Multipart — security limits', () => { const mp = Multipart.create({ maxFiles: 2 }); const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f1"; filename="a.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f1"; filename="a.txt"\r\nContent-Type: text/plain', body: 'a', }, { - headers: - 'Content-Disposition: form-data; name="f2"; filename="b.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f2"; filename="b.txt"\r\nContent-Type: text/plain', body: 'b', }, { - headers: - 'Content-Disposition: form-data; name="f3"; filename="c.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f3"; filename="c.txt"\r\nContent-Type: text/plain', body: 'c', }, ]); @@ -110,8 +108,7 @@ describe('Multipart — security limits', () => { const mp = Multipart.create({ maxFileSize: 10 }); const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="big"; filename="big.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="big"; filename="big.bin"\r\nContent-Type: application/octet-stream', body: 'x'.repeat(100), }, ]); @@ -127,9 +124,7 @@ describe('Multipart — security limits', () => { test('enforces maxFieldSize limit', async () => { const mp = Multipart.create({ maxFieldSize: 5 }); - const body = buildBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="long"', body: 'x'.repeat(100) }, - ]); + const body = buildBody(boundary, [{ headers: 'Content-Disposition: form-data; name="long"', body: 'x'.repeat(100) }]); try { await consumeAll(mp.parse(createRequest(boundary, body))); @@ -142,9 +137,7 @@ describe('Multipart — security limits', () => { test('enforces maxTotalSize limit', async () => { const mp = Multipart.create({ maxTotalSize: 50 }); - const body = buildBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="a"', body: 'x'.repeat(100) }, - ]); + const body = buildBody(boundary, [{ headers: 'Content-Disposition: form-data; name="a"', body: 'x'.repeat(100) }]); try { await consumeAll(mp.parse(createRequest(boundary, body))); @@ -159,8 +152,7 @@ describe('Multipart — security limits', () => { const mp = Multipart.create({ maxHeaderSize: 20 }); const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="field-with-very-long-header-name-that-exceeds-limit"', + headers: 'Content-Disposition: form-data; name="field-with-very-long-header-name-that-exceeds-limit"', body: 'value', }, ]); @@ -185,8 +177,7 @@ describe('Multipart — security limits', () => { { headers: 'Content-Disposition: form-data; name="name"', body: 'Alice' }, { headers: 'Content-Disposition: form-data; name="age"', body: '25' }, { - headers: - 'Content-Disposition: form-data; name="file"; filename="a.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="file"; filename="a.txt"\r\nContent-Type: text/plain', body: 'content', }, ]); @@ -202,8 +193,7 @@ describe('Multipart — security limits', () => { const body = buildBody(boundary, [ { headers: 'Content-Disposition: form-data; name="field"', body: 'value' }, { - headers: - 'Content-Disposition: form-data; name="file"; filename="x.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="file"; filename="x.txt"\r\nContent-Type: text/plain', body: 'data', }, ]); @@ -218,9 +208,7 @@ describe('Multipart — security limits', () => { test('maxTotalSize null disables the limit', async () => { const mp = Multipart.create({ maxTotalSize: null, maxFieldSize: 200_000 }); const largeValue = 'A'.repeat(100_000); - const body = buildBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="big"', body: largeValue }, - ]); + const body = buildBody(boundary, [{ headers: 'Content-Disposition: form-data; name="big"', body: largeValue }]); const { fields } = await mp.parseAll(createRequest(boundary, body)); @@ -232,8 +220,7 @@ describe('Multipart — security limits', () => { const fileContent = 'x'.repeat(200); const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="file"; filename="big.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="file"; filename="big.bin"\r\nContent-Type: application/octet-stream', body: fileContent, }, ]); @@ -252,9 +239,7 @@ describe('Multipart — security limits', () => { test('chunked field limit: oversized field caught during streaming', async () => { const mp = Multipart.create({ maxFieldSize: 30 }); const fieldContent = 'y'.repeat(200); - const body = buildBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="bigfield"', body: fieldContent }, - ]); + const body = buildBody(boundary, [{ headers: 'Content-Disposition: form-data; name="bigfield"', body: fieldContent }]); const request = toChunkedRequest(boundary, body, 8); @@ -271,8 +256,7 @@ describe('Multipart — security limits', () => { const mp = Multipart.create({ maxHeaderSize: 30 }); const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="a-very-long-name-that-will-exceed-the-small-header-limit"', + headers: 'Content-Disposition: form-data; name="a-very-long-name-that-will-exceed-the-small-header-limit"', body: 'val', }, ]); @@ -293,8 +277,7 @@ describe('Multipart — security limits', () => { const fileContent = 'z'.repeat(50); const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="doc"; filename="big.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="doc"; filename="big.txt"\r\nContent-Type: text/plain', body: fileContent, }, ]); @@ -318,8 +301,7 @@ describe('Multipart — security limits', () => { const exactContent = 'x'.repeat(limit); const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="file"; filename="exact.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="file"; filename="exact.bin"\r\nContent-Type: application/octet-stream', body: exactContent, }, ]); @@ -335,8 +317,7 @@ describe('Multipart — security limits', () => { const overContent = 'x'.repeat(limit + 1); const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="file"; filename="over.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="file"; filename="over.bin"\r\nContent-Type: application/octet-stream', body: overContent, }, ]); @@ -355,18 +336,15 @@ describe('Multipart — security limits', () => { const okBody = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f1"; filename="1.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f1"; filename="1.txt"\r\nContent-Type: text/plain', body: 'a', }, { - headers: - 'Content-Disposition: form-data; name="f2"; filename="2.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f2"; filename="2.txt"\r\nContent-Type: text/plain', body: 'b', }, { - headers: - 'Content-Disposition: form-data; name="f3"; filename="3.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f3"; filename="3.txt"\r\nContent-Type: text/plain', body: 'c', }, ]); @@ -377,23 +355,19 @@ describe('Multipart — security limits', () => { const overBody = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f1"; filename="1.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f1"; filename="1.txt"\r\nContent-Type: text/plain', body: 'a', }, { - headers: - 'Content-Disposition: form-data; name="f2"; filename="2.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f2"; filename="2.txt"\r\nContent-Type: text/plain', body: 'b', }, { - headers: - 'Content-Disposition: form-data; name="f3"; filename="3.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f3"; filename="3.txt"\r\nContent-Type: text/plain', body: 'c', }, { - headers: - 'Content-Disposition: form-data; name="f4"; filename="4.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f4"; filename="4.txt"\r\nContent-Type: text/plain', body: 'd', }, ]); @@ -410,9 +384,7 @@ describe('Multipart — security limits', () => { test('maxFieldSize exact boundary: field exactly at limit succeeds', async () => { const limit = 20; const mp = Multipart.create({ maxFieldSize: limit }); - const body = buildBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="field"', body: 'y'.repeat(limit) }, - ]); + const body = buildBody(boundary, [{ headers: 'Content-Disposition: form-data; name="field"', body: 'y'.repeat(limit) }]); const { fields } = await mp.parseAll(createRequest(boundary, body)); @@ -422,9 +394,7 @@ describe('Multipart — security limits', () => { test('maxFieldSize exact boundary: field 1 byte over limit fails', async () => { const limit = 20; const mp = Multipart.create({ maxFieldSize: limit }); - const body = buildBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="field"', body: 'y'.repeat(limit + 1) }, - ]); + const body = buildBody(boundary, [{ headers: 'Content-Disposition: form-data; name="field"', body: 'y'.repeat(limit + 1) }]); try { await consumeAll(mp.parse(createRequest(boundary, body))); @@ -468,18 +438,15 @@ describe('Multipart — security limits', () => { const mp = Multipart.create({ maxParts: 2 }); const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f1"; filename="a.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f1"; filename="a.txt"\r\nContent-Type: text/plain', body: 'a', }, { - headers: - 'Content-Disposition: form-data; name="f2"; filename="b.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f2"; filename="b.txt"\r\nContent-Type: text/plain', body: 'b', }, { - headers: - 'Content-Disposition: form-data; name="f3"; filename="c.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f3"; filename="c.txt"\r\nContent-Type: text/plain', body: 'c', }, ]); @@ -498,8 +465,7 @@ describe('Multipart — security limits', () => { const body = buildBody(boundary, [ { headers: 'Content-Disposition: form-data; name="field1"', body: 'val' }, { - headers: - 'Content-Disposition: form-data; name="f1"; filename="a.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f1"; filename="a.txt"\r\nContent-Type: text/plain', body: 'a', }, { headers: 'Content-Disposition: form-data; name="field2"', body: 'val2' }, @@ -518,13 +484,11 @@ describe('Multipart — security limits', () => { const mp = Multipart.create({ maxParts: 1 }); const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f1"; filename="a.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f1"; filename="a.txt"\r\nContent-Type: text/plain', body: 'a', }, { - headers: - 'Content-Disposition: form-data; name="f2"; filename="b.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f2"; filename="b.txt"\r\nContent-Type: text/plain', body: 'b', }, ]); @@ -569,8 +533,7 @@ describe('Multipart — security limits', () => { const mp = Multipart.create({ maxTotalSize: 50, maxFileSize: 100 }); const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="file"; filename="big.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="file"; filename="big.bin"\r\nContent-Type: application/octet-stream', body: 'x'.repeat(200), }, ]); diff --git a/packages/multipart/test/integration/parse-all.test.ts b/packages/multipart/test/integration/parse-all.test.ts index 09b2bc0..98cc2d9 100644 --- a/packages/multipart/test/integration/parse-all.test.ts +++ b/packages/multipart/test/integration/parse-all.test.ts @@ -34,8 +34,7 @@ describe('Multipart.parseAll — integration', () => { const body = buildBody(boundary, [ { headers: 'Content-Disposition: form-data; name="username"', body: 'alice' }, { - headers: - 'Content-Disposition: form-data; name="avatar"; filename="pic.png"\r\nContent-Type: image/png', + headers: 'Content-Disposition: form-data; name="avatar"; filename="pic.png"\r\nContent-Type: image/png', body: 'PNG_DATA', }, { headers: 'Content-Disposition: form-data; name="bio"', body: 'Hello there' }, @@ -88,13 +87,11 @@ describe('Multipart.parseAll — integration', () => { const boundary = 'parseall-files-only'; const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="doc1"; filename="a.pdf"\r\nContent-Type: application/pdf', + headers: 'Content-Disposition: form-data; name="doc1"; filename="a.pdf"\r\nContent-Type: application/pdf', body: 'pdf content a', }, { - headers: - 'Content-Disposition: form-data; name="doc2"; filename="b.pdf"\r\nContent-Type: application/pdf', + headers: 'Content-Disposition: form-data; name="doc2"; filename="b.pdf"\r\nContent-Type: application/pdf', body: 'pdf content b', }, ]); @@ -133,18 +130,15 @@ describe('Multipart.parseAll — integration', () => { const boundary = 'parseall-dup-files'; const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="photos"; filename="img1.jpg"\r\nContent-Type: image/jpeg', + headers: 'Content-Disposition: form-data; name="photos"; filename="img1.jpg"\r\nContent-Type: image/jpeg', body: 'jpeg1', }, { - headers: - 'Content-Disposition: form-data; name="photos"; filename="img2.jpg"\r\nContent-Type: image/jpeg', + headers: 'Content-Disposition: form-data; name="photos"; filename="img2.jpg"\r\nContent-Type: image/jpeg', body: 'jpeg2', }, { - headers: - 'Content-Disposition: form-data; name="photos"; filename="img3.jpg"\r\nContent-Type: image/jpeg', + headers: 'Content-Disposition: form-data; name="photos"; filename="img3.jpg"\r\nContent-Type: image/jpeg', body: 'jpeg3', }, ]); @@ -172,18 +166,15 @@ describe('Multipart.parseAll — integration', () => { { headers: 'Content-Disposition: form-data; name="tag"', body: 'travel' }, { headers: 'Content-Disposition: form-data; name="tag"', body: 'summer' }, { - headers: - 'Content-Disposition: form-data; name="cover"; filename="cover.jpg"\r\nContent-Type: image/jpeg', + headers: 'Content-Disposition: form-data; name="cover"; filename="cover.jpg"\r\nContent-Type: image/jpeg', body: 'cover data', }, { - headers: - 'Content-Disposition: form-data; name="photos"; filename="p1.jpg"\r\nContent-Type: image/jpeg', + headers: 'Content-Disposition: form-data; name="photos"; filename="p1.jpg"\r\nContent-Type: image/jpeg', body: 'photo 1', }, { - headers: - 'Content-Disposition: form-data; name="photos"; filename="p2.jpg"\r\nContent-Type: image/jpeg', + headers: 'Content-Disposition: form-data; name="photos"; filename="p2.jpg"\r\nContent-Type: image/jpeg', body: 'photo 2', }, ]); diff --git a/packages/multipart/test/integration/parse.test.ts b/packages/multipart/test/integration/parse.test.ts index dd1ea13..7b89a2f 100644 --- a/packages/multipart/test/integration/parse.test.ts +++ b/packages/multipart/test/integration/parse.test.ts @@ -1,7 +1,8 @@ import { describe, test, expect } from 'bun:test'; -import { Multipart } from '../../src/multipart'; import type { MultipartPart } from '../../src/interfaces'; + +import { Multipart } from '../../src/multipart'; import { BufferedMultipartFile } from '../../src/parser/streaming-part'; // ── Helpers ───────────────────────────────────────────────────────── @@ -27,12 +28,12 @@ function buildBody(boundary: string, parts: Array<{ headers: string; body: strin } async function partText(part: MultipartPart): Promise { - if (part.isFile) return part.text(); + if (part.isFile) {return part.text();} return part.text(); } async function partBytes(part: MultipartPart): Promise { - if (part.isFile) return part.bytes(); + if (part.isFile) {return part.bytes();} return part.bytes(); } @@ -62,9 +63,7 @@ describe('Multipart.parse — integration', () => { test('parses a single text field from a Request', async () => { const boundary = 'xyzzy'; - const body = buildBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="greeting"', body: 'hello world' }, - ]); + const body = buildBody(boundary, [{ headers: 'Content-Disposition: form-data; name="greeting"', body: 'hello world' }]); const parts = await collectParts(mp.parse(createRequest(boundary, body))); @@ -80,8 +79,7 @@ describe('Multipart.parse — integration', () => { const fileContent = 'console.log("hello");'; const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="script"; filename="app.js"\r\nContent-Type: application/javascript', + headers: 'Content-Disposition: form-data; name="script"; filename="app.js"\r\nContent-Type: application/javascript', body: fileContent, }, ]); @@ -102,14 +100,12 @@ describe('Multipart.parse — integration', () => { { headers: 'Content-Disposition: form-data; name="username"', body: 'alice' }, { headers: 'Content-Disposition: form-data; name="email"', body: 'alice@example.com' }, { - headers: - 'Content-Disposition: form-data; name="photo"; filename="avatar.jpg"\r\nContent-Type: image/jpeg', + headers: 'Content-Disposition: form-data; name="photo"; filename="avatar.jpg"\r\nContent-Type: image/jpeg', body: 'JFIF_DATA_HERE', }, { headers: 'Content-Disposition: form-data; name="bio"', body: 'Hello, I am Alice.' }, { - headers: - 'Content-Disposition: form-data; name="resume"; filename="cv.pdf"\r\nContent-Type: application/pdf', + headers: 'Content-Disposition: form-data; name="resume"; filename="cv.pdf"\r\nContent-Type: application/pdf', body: '%PDF-1.4 fake content', }, ]); @@ -178,8 +174,7 @@ describe('Multipart.parse — integration', () => { const boundary = 'empty-fn'; const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="file"; filename=""\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="file"; filename=""\r\nContent-Type: application/octet-stream', body: '', }, ]); @@ -196,18 +191,15 @@ describe('Multipart.parse — integration', () => { const boundary = 'multi-file'; const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="files"; filename="a.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="files"; filename="a.txt"\r\nContent-Type: text/plain', body: 'file a content', }, { - headers: - 'Content-Disposition: form-data; name="files"; filename="b.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="files"; filename="b.txt"\r\nContent-Type: text/plain', body: 'file b content', }, { - headers: - 'Content-Disposition: form-data; name="files"; filename="c.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="files"; filename="c.txt"\r\nContent-Type: text/plain', body: 'file c content', }, ]); @@ -235,9 +227,7 @@ describe('Multipart.parse — integration', () => { test('preamble text before first boundary is ignored', async () => { const boundary = 'preamble-test'; const preamble = 'This is the preamble. It should be ignored.\r\nMore preamble lines.\r\n'; - const partsRaw = buildBody(boundary, [ - { headers: 'Content-Disposition: form-data; name="field"', body: 'value' }, - ]); + const partsRaw = buildBody(boundary, [{ headers: 'Content-Disposition: form-data; name="field"', body: 'value' }]); const body = preamble + partsRaw; const parts = await collectParts(mp.parse(createRequest(boundary, body))); @@ -249,9 +239,7 @@ describe('Multipart.parse — integration', () => { test('instance reuse: parse two different requests sequentially', async () => { const boundary1 = 'first-req'; - const body1 = buildBody(boundary1, [ - { headers: 'Content-Disposition: form-data; name="a"', body: 'first' }, - ]); + const body1 = buildBody(boundary1, [{ headers: 'Content-Disposition: form-data; name="a"', body: 'first' }]); const boundary2 = 'second-req'; const body2 = buildBody(boundary2, [ @@ -328,9 +316,7 @@ describe('Multipart.parse — integration', () => { test('very long field name (200 chars)', async () => { const boundary = 'long-name'; const longName = 'x'.repeat(200); - const body = buildBody(boundary, [ - { headers: `Content-Disposition: form-data; name="${longName}"`, body: 'val' }, - ]); + const body = buildBody(boundary, [{ headers: `Content-Disposition: form-data; name="${longName}"`, body: 'val' }]); const parts = await collectParts(mp.parse(createRequest(boundary, body))); @@ -362,8 +348,7 @@ describe('Multipart.parse — integration', () => { const boundary = 'auto-drain'; const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="skipped"; filename="skip.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="skipped"; filename="skip.bin"\r\nContent-Type: application/octet-stream', body: 'x'.repeat(1024), }, { @@ -388,18 +373,15 @@ describe('Multipart.parse — integration', () => { const boundary = 'multi-drain'; const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f1"; filename="a.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="f1"; filename="a.bin"\r\nContent-Type: application/octet-stream', body: 'aaa', }, { - headers: - 'Content-Disposition: form-data; name="f2"; filename="b.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="f2"; filename="b.bin"\r\nContent-Type: application/octet-stream', body: 'bbb', }, { - headers: - 'Content-Disposition: form-data; name="f3"; filename="c.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="f3"; filename="c.bin"\r\nContent-Type: application/octet-stream', body: 'ccc', }, { @@ -422,13 +404,11 @@ describe('Multipart.parse — integration', () => { const boundary = 'mixed-consume'; const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="consumed"; filename="yes.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="consumed"; filename="yes.txt"\r\nContent-Type: text/plain', body: 'consumed data', }, { - headers: - 'Content-Disposition: form-data; name="skipped"; filename="no.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="skipped"; filename="no.txt"\r\nContent-Type: text/plain', body: 'skipped data', }, { @@ -455,13 +435,11 @@ describe('Multipart.parse — integration', () => { const boundary = 'abandon-test'; const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="f1"; filename="a.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f1"; filename="a.txt"\r\nContent-Type: text/plain', body: 'file-data-1', }, { - headers: - 'Content-Disposition: form-data; name="f2"; filename="b.txt"\r\nContent-Type: text/plain', + headers: 'Content-Disposition: form-data; name="f2"; filename="b.txt"\r\nContent-Type: text/plain', body: 'file-data-2', }, { @@ -490,8 +468,7 @@ describe('Multipart.parse — integration', () => { const boundary = 'abandon-mid-file'; const body = buildBody(boundary, [ { - headers: - 'Content-Disposition: form-data; name="big"; filename="big.bin"\r\nContent-Type: application/octet-stream', + headers: 'Content-Disposition: form-data; name="big"; filename="big.bin"\r\nContent-Type: application/octet-stream', body: 'x'.repeat(1000), }, { @@ -502,7 +479,7 @@ describe('Multipart.parse — integration', () => { let count = 0; - for await (const part of mp.parse(createRequest(boundary, body))) { + for await (const _part of mp.parse(createRequest(boundary, body))) { count++; // Don't consume the file, just break break; diff --git a/packages/query-parser/CHANGELOG.md b/packages/query-parser/CHANGELOG.md index 4c84961..cbe4a6f 100644 --- a/packages/query-parser/CHANGELOG.md +++ b/packages/query-parser/CHANGELOG.md @@ -32,7 +32,6 @@ ### Patch Changes - 665e37c: chore: quality audit across all public packages - - Add `sideEffects: false` and `publishConfig.provenance` to all packages - Add `.npmignore` to all packages - Expand npm keywords for better discoverability @@ -49,7 +48,6 @@ ### Minor Changes - 30c8b42: ### Refactor - - Merge duplicate `assignLeaf` / `assignLeafStrict` into a single unified method - Merge duplicate `assignToRecord` / `assignToRecordStrict` into a single unified method - Replace `export *` with explicit named exports to tighten public API surface @@ -57,32 +55,26 @@ - Remove redundant `!qs` falsy check in `parseInternal` (empty string check is sufficient) ### Security - - Add `__lookupGetter__` and `__lookupSetter__` to `POISONED_KEYS` blocklist ### Bug Fixes - - Add `safeDecode` helper that catches malformed percent-encoding: returns raw string in non-strict mode, returns `Err` in strict mode (previously threw uncaught `URIError`) - Apply `safeDecode` to both keys and values during `processPair` ### Features - - Add `urlEncoded` option to decode `+` as space (`application/x-www-form-urlencoded`) — disabled by default ### Breaking Changes - - Rename `QueryParserErrorReason.InvalidParameterLimit` → `InvalidMaxParams` - Rename `QueryParserErrorReason.InvalidHppMode` → `InvalidDuplicates` ### Tests - - Add tests for `__lookupGetter__` / `__lookupSetter__` blocking - Split malformed percent-encoding test into strict vs non-strict cases covering both keys and values - Add child-position poisoned key tests (`safe[__proto__]`, `safe[constructor]`, `safe[prototype]`) - Add `urlEncoded` test suite (8 cases) ### Benchmark - - Add comprehensive benchmark suite (`bench/query-parser.bench.ts`) using mitata with 11 groups: factory cost, flat scaling, nested depth, array parsing, HPP modes, encoding overhead, strict mode overhead, realistic payloads, competitor comparison, and urlEncoded overhead - Fix incorrect `strictArrayParser` → `strictNestingParser` variable in strict mode benchmark @@ -91,7 +83,6 @@ ### Minor Changes - 30c8b42: ### Refactor - - Merge duplicate `assignLeaf` / `assignLeafStrict` into a single unified method - Merge duplicate `assignToRecord` / `assignToRecordStrict` into a single unified method - Replace `export *` with explicit named exports to tighten public API surface @@ -99,21 +90,17 @@ - Remove redundant `!qs` falsy check in `parseInternal` (empty string check is sufficient) ### Security - - Add `__lookupGetter__` and `__lookupSetter__` to `POISONED_KEYS` blocklist ### Bug Fixes - - Add `safeDecode` helper that catches malformed percent-encoding: returns raw string in non-strict mode, returns `Err` in strict mode (previously threw uncaught `URIError`) - Apply `safeDecode` to both keys and values during `processPair` ### Tests - - Add tests for `__lookupGetter__` / `__lookupSetter__` blocking - Split malformed percent-encoding test into strict vs non-strict cases covering both keys and values ### Benchmark - - Add comprehensive benchmark suite (`bench/query-parser.bench.ts`) using mitata with 10 groups: factory cost, flat scaling, nested depth, array parsing, HPP modes, encoding overhead, strict mode overhead, realistic payloads, and competitor comparison (qs, node:querystring, URLSearchParams) ## 0.1.0 @@ -121,7 +108,6 @@ ### Minor Changes - 0a8d457: ### Refactor - - Merge duplicate `assignLeaf` / `assignLeafStrict` into a single unified method - Merge duplicate `assignToRecord` / `assignToRecordStrict` into a single unified method - Replace `export *` with explicit named exports to tighten public API surface @@ -129,19 +115,15 @@ - Remove redundant `!qs` falsy check in `parseInternal` (empty string check is sufficient) ### Security - - Add `__lookupGetter__` and `__lookupSetter__` to `POISONED_KEYS` blocklist ### Bug Fixes - - Add `safeDecode` helper that catches malformed percent-encoding: returns raw string in non-strict mode, returns `Err` in strict mode (previously threw uncaught `URIError`) - Apply `safeDecode` to both keys and values during `processPair` ### Tests - - Add tests for `__lookupGetter__` / `__lookupSetter__` blocking - Split malformed percent-encoding test into strict vs non-strict cases covering both keys and values ### Benchmark - - Add comprehensive benchmark suite (`bench/query-parser.bench.ts`) using mitata with 10 groups: factory cost, flat scaling, nested depth, array parsing, HPP modes, encoding overhead, strict mode overhead, realistic payloads, and competitor comparison (qs, node:querystring, URLSearchParams) diff --git a/packages/query-parser/README.ko.md b/packages/query-parser/README.ko.md index 11722b1..fb0ffec 100644 --- a/packages/query-parser/README.ko.md +++ b/packages/query-parser/README.ko.md @@ -39,12 +39,12 @@ parser.parse('q=hello%20world&lang=ko'); ```typescript interface QueryParserOptions { - depth?: number; // 기본값: 5 - maxParams?: number; // 기본값: 1000 - nesting?: boolean; // 기본값: false - arrayLimit?: number; // 기본값: 20 - duplicates?: 'first' | 'last' | 'array'; // 기본값: 'first' - strict?: boolean; // 기본값: false + depth?: number; // 기본값: 5 + maxParams?: number; // 기본값: 1000 + nesting?: boolean; // 기본값: false + arrayLimit?: number; // 기본값: 20 + duplicates?: 'first' | 'last' | 'array'; // 기본값: 'first' + strict?: boolean; // 기본값: false } ``` @@ -55,7 +55,7 @@ interface QueryParserOptions { ```typescript const parser = QueryParser.create({ depth: 2 }); -parser.parse('a[b][c]=1'); // { a: { b: { c: '1' } } } +parser.parse('a[b][c]=1'); // { a: { b: { c: '1' } } } parser.parse('a[b][c][d]=1'); // 깊이 초과 — 무시 ``` @@ -95,7 +95,7 @@ parser.parse('filter[status]=active&filter[role]=admin'); ```typescript const parser = QueryParser.create({ nesting: true, arrayLimit: 5 }); -parser.parse('a[3]=ok'); // { a: [undefined, undefined, undefined, 'ok'] } +parser.parse('a[3]=ok'); // { a: [undefined, undefined, undefined, 'ok'] } parser.parse('a[100]=no'); // 인덱스 초과 — 무시 ``` @@ -103,11 +103,11 @@ parser.parse('a[100]=no'); // 인덱스 초과 — 무시 중복 키 처리 전략 (HTTP Parameter Pollution 방어). -| 값 | 동작 | -|:---|:-----| +| 값 | 동작 | +| :----------------- | :------------------------------------- | | `'first'` _(기본)_ | 첫 번째 값 유지 — HPP 공격에 가장 안전 | -| `'last'` | 마지막 값 유지 | -| `'array'` | 모든 값을 배열로 수집 | +| `'last'` | 마지막 값 유지 | +| `'array'` | 모든 값을 배열로 수집 | ```typescript // 입력: 'role=admin&role=user' @@ -133,9 +133,9 @@ QueryParser.create({ duplicates: 'array' }).parse(input); ```typescript const parser = QueryParser.create({ strict: true }); -parser.parse('valid=ok'); // { valid: 'ok' } -parser.parse('bad=%zz'); // QueryParserError throw -parser.parse('a=1&a[b]=2'); // QueryParserError throw (구조 충돌) +parser.parse('valid=ok'); // { valid: 'ok' } +parser.parse('bad=%zz'); // QueryParserError throw +parser.parse('a=1&a[b]=2'); // QueryParserError throw (구조 충돌) ```
@@ -151,7 +151,7 @@ try { const parser = QueryParser.create({ depth: -1 }); } catch (e) { if (e instanceof QueryParserError) { - e.reason; // QueryParserErrorReason.InvalidDepth + e.reason; // QueryParserErrorReason.InvalidDepth e.message; // "depth must be a non-negative integer." } } @@ -159,14 +159,14 @@ try { ### `QueryParserErrorReason` -| Reason | 발생 위치 | 설명 | -|:-------|:---------|:-----| -| `InvalidDepth` | `create()` | `depth`가 0 이상의 정수가 아님 | -| `InvalidParameterLimit` | `create()` | `maxParams`가 양의 정수가 아님 | -| `InvalidArrayLimit` | `create()` | `arrayLimit`가 0 이상의 정수가 아님 | -| `InvalidHppMode` | `create()` | `duplicates`가 `'first'`, `'last'`, `'array'` 중 하나가 아님 | -| `MalformedQueryString` | `parse()` | 잘못된 문법 (strict 모드 전용) | -| `ConflictingStructure` | `parse()` | 키가 스칼라와 중첩 구조로 동시 사용됨 (strict 모드 전용) | +| Reason | 발생 위치 | 설명 | +| :---------------------- | :--------- | :----------------------------------------------------------- | +| `InvalidDepth` | `create()` | `depth`가 0 이상의 정수가 아님 | +| `InvalidParameterLimit` | `create()` | `maxParams`가 양의 정수가 아님 | +| `InvalidArrayLimit` | `create()` | `arrayLimit`가 0 이상의 정수가 아님 | +| `InvalidHppMode` | `create()` | `duplicates`가 `'first'`, `'last'`, `'array'` 중 하나가 아님 | +| `MalformedQueryString` | `parse()` | 잘못된 문법 (strict 모드 전용) | +| `ConflictingStructure` | `parse()` | 키가 스칼라와 중첩 구조로 동시 사용됨 (strict 모드 전용) |
@@ -206,19 +206,19 @@ try { ### vs 경쟁 라이브러리 (flat key-value) -| 입력 | @zipbul/query-parser | node:querystring | URLSearchParams | qs | -|:-----|---------------------:|-----------------:|----------------:|---:| -| flat 10 params | 423 ns | 368 ns | 2.62 us | 4.65 us | -| flat 50 params | 4.81 us | 4.36 us | 12.58 us | 19.40 us | -| encoded 5 params | **955 ns** | 1.24 us | 1.60 us | 2.24 us | +| 입력 | @zipbul/query-parser | node:querystring | URLSearchParams | qs | +| :--------------- | -------------------: | ---------------: | --------------: | -------: | +| flat 10 params | 423 ns | 368 ns | 2.62 us | 4.65 us | +| flat 50 params | 4.81 us | 4.36 us | 12.58 us | 19.40 us | +| encoded 5 params | **955 ns** | 1.24 us | 1.60 us | 2.24 us | ### vs qs (nested/array) -| 입력 | @zipbul/query-parser | qs | 속도 차이 | -|:-----|---------------------:|---:|----------:| -| nested depth 3 | 162 ns | 1.01 us | **6.3x** | -| array x10 | 1.39 us | 7.16 us | **5.2x** | -| e-commerce payload | 1.12 us | 4.50 us | **4.0x** | +| 입력 | @zipbul/query-parser | qs | 속도 차이 | +| :----------------- | -------------------: | ------: | --------: | +| nested depth 3 | 162 ns | 1.01 us | **6.3x** | +| array x10 | 1.39 us | 7.16 us | **5.2x** | +| e-commerce payload | 1.12 us | 4.50 us | **4.0x** | 로컬에서 벤치마크 실행: diff --git a/packages/query-parser/README.md b/packages/query-parser/README.md index b96a753..bee31b2 100644 --- a/packages/query-parser/README.md +++ b/packages/query-parser/README.md @@ -39,12 +39,12 @@ parser.parse('q=hello%20world&lang=ko'); ```typescript interface QueryParserOptions { - depth?: number; // Default: 5 - maxParams?: number; // Default: 1000 - nesting?: boolean; // Default: false - arrayLimit?: number; // Default: 20 - duplicates?: 'first' | 'last' | 'array'; // Default: 'first' - strict?: boolean; // Default: false + depth?: number; // Default: 5 + maxParams?: number; // Default: 1000 + nesting?: boolean; // Default: false + arrayLimit?: number; // Default: 20 + duplicates?: 'first' | 'last' | 'array'; // Default: 'first' + strict?: boolean; // Default: false } ``` @@ -55,7 +55,7 @@ Maximum depth of nested object parsing. Keys nested beyond this limit are silent ```typescript const parser = QueryParser.create({ depth: 2 }); -parser.parse('a[b][c]=1'); // { a: { b: { c: '1' } } } +parser.parse('a[b][c]=1'); // { a: { b: { c: '1' } } } parser.parse('a[b][c][d]=1'); // depth exceeded — ignored ``` @@ -95,7 +95,7 @@ Maximum array index allowed when `nesting` is enabled. Indices exceeding this li ```typescript const parser = QueryParser.create({ nesting: true, arrayLimit: 5 }); -parser.parse('a[3]=ok'); // { a: [undefined, undefined, undefined, 'ok'] } +parser.parse('a[3]=ok'); // { a: [undefined, undefined, undefined, 'ok'] } parser.parse('a[100]=no'); // index exceeds limit — ignored ``` @@ -103,11 +103,11 @@ parser.parse('a[100]=no'); // index exceeds limit — ignored Strategy for handling duplicate keys (HTTP Parameter Pollution). -| Value | Behavior | -|:------|:---------| +| Value | Behavior | +| :-------------------- | :------------------------------------------------ | | `'first'` _(default)_ | Keep the first value — safest against HPP attacks | -| `'last'` | Keep the last value | -| `'array'` | Collect all values into an array | +| `'last'` | Keep the last value | +| `'array'` | Collect all values into an array | ```typescript // Input: 'role=admin&role=user' @@ -133,9 +133,9 @@ When enabled, `parse()` throws `QueryParserError` instead of silently ignoring e ```typescript const parser = QueryParser.create({ strict: true }); -parser.parse('valid=ok'); // { valid: 'ok' } -parser.parse('bad=%zz'); // throws QueryParserError -parser.parse('a=1&a[b]=2'); // throws QueryParserError (conflicting structure) +parser.parse('valid=ok'); // { valid: 'ok' } +parser.parse('bad=%zz'); // throws QueryParserError +parser.parse('a=1&a[b]=2'); // throws QueryParserError (conflicting structure) ```
@@ -151,7 +151,7 @@ try { const parser = QueryParser.create({ depth: -1 }); } catch (e) { if (e instanceof QueryParserError) { - e.reason; // QueryParserErrorReason.InvalidDepth + e.reason; // QueryParserErrorReason.InvalidDepth e.message; // "depth must be a non-negative integer." } } @@ -159,14 +159,14 @@ try { ### `QueryParserErrorReason` -| Reason | Thrown by | Description | -|:-------|:---------|:------------| -| `InvalidDepth` | `create()` | `depth` must be a non-negative integer | -| `InvalidParameterLimit` | `create()` | `maxParams` must be a positive integer | -| `InvalidArrayLimit` | `create()` | `arrayLimit` must be a non-negative integer | -| `InvalidHppMode` | `create()` | `duplicates` must be `'first'`, `'last'`, or `'array'` | -| `MalformedQueryString` | `parse()` | Malformed syntax (strict mode only) | -| `ConflictingStructure` | `parse()` | Key used as both scalar and nested (strict mode only) | +| Reason | Thrown by | Description | +| :---------------------- | :--------- | :----------------------------------------------------- | +| `InvalidDepth` | `create()` | `depth` must be a non-negative integer | +| `InvalidParameterLimit` | `create()` | `maxParams` must be a positive integer | +| `InvalidArrayLimit` | `create()` | `arrayLimit` must be a non-negative integer | +| `InvalidHppMode` | `create()` | `duplicates` must be `'first'`, `'last'`, or `'array'` | +| `MalformedQueryString` | `parse()` | Malformed syntax (strict mode only) | +| `ConflictingStructure` | `parse()` | Key used as both scalar and nested (strict mode only) |
@@ -206,19 +206,19 @@ Benchmarked with [mitata](https://github.com/evanwashere/mitata) on Bun. ### vs competitors (flat key-value) -| Input | @zipbul/query-parser | node:querystring | URLSearchParams | qs | -|:------|---------------------:|-----------------:|----------------:|---:| -| flat 10 params | 423 ns | 368 ns | 2.62 us | 4.65 us | -| flat 50 params | 4.81 us | 4.36 us | 12.58 us | 19.40 us | -| encoded 5 params | **955 ns** | 1.24 us | 1.60 us | 2.24 us | +| Input | @zipbul/query-parser | node:querystring | URLSearchParams | qs | +| :--------------- | -------------------: | ---------------: | --------------: | -------: | +| flat 10 params | 423 ns | 368 ns | 2.62 us | 4.65 us | +| flat 50 params | 4.81 us | 4.36 us | 12.58 us | 19.40 us | +| encoded 5 params | **955 ns** | 1.24 us | 1.60 us | 2.24 us | ### vs qs (nested/array) -| Input | @zipbul/query-parser | qs | Speedup | -|:------|---------------------:|---:|--------:| -| nested depth 3 | 162 ns | 1.01 us | **6.3x** | -| array x10 | 1.39 us | 7.16 us | **5.2x** | -| e-commerce payload | 1.12 us | 4.50 us | **4.0x** | +| Input | @zipbul/query-parser | qs | Speedup | +| :----------------- | -------------------: | ------: | -------: | +| nested depth 3 | 162 ns | 1.01 us | **6.3x** | +| array x10 | 1.39 us | 7.16 us | **5.2x** | +| e-commerce payload | 1.12 us | 4.50 us | **4.0x** | Run benchmarks locally: diff --git a/packages/query-parser/bench/query-parser.bench.ts b/packages/query-parser/bench/query-parser.bench.ts index 0e1341a..8d46d0f 100644 --- a/packages/query-parser/bench/query-parser.bench.ts +++ b/packages/query-parser/bench/query-parser.bench.ts @@ -1,6 +1,5 @@ import { run, bench, boxplot, summary, do_not_optimize } from 'mitata'; import querystring from 'node:querystring'; - import qs from 'qs'; import { QueryParser } from '../src/query-parser'; @@ -40,8 +39,7 @@ const ENCODED_KEYS = '%EC%9D%B4%EB%A6%84=hello%20world&%EB%8F%84%EC%8B%9C=%EC%84 const SEARCH_FORM = 'q=typescript&page=1&limit=20&sort=relevance&lang=ko'; const FILTER_API = 'filter[status]=active&filter[role]=admin&page=1&per_page=50'; -const ECOMMERCE = - 'category=shoes&brand[]=nike&brand[]=adidas&price_min=50&price_max=200&size[]=9&size[]=10&sort=price_asc'; +const ECOMMERCE = 'category=shoes&brand[]=nike&brand[]=adidas&price_min=50&price_max=200&size[]=9&size[]=10&sort=price_asc'; const ENCODED_5 = 'key%201=val%201&key%202=val%202&key%203=val%203&key%204=val%204&key%205=val%205'; diff --git a/packages/query-parser/bunfig.toml b/packages/query-parser/bunfig.toml index 938ad47..f2757e3 100644 --- a/packages/query-parser/bunfig.toml +++ b/packages/query-parser/bunfig.toml @@ -3,11 +3,7 @@ onlyFailures = true coverage = true coverageReporter = ["text", "lcov"] coverageThreshold = 0.95 -coveragePathIgnorePatterns = [ - "node_modules/**", - "dist/**", - "../result/**" -] +coveragePathIgnorePatterns = ["node_modules/**", "dist/**", "../result/**"] [test.reporter] dots = true diff --git a/packages/query-parser/package.json b/packages/query-parser/package.json index 1f11566..644a3ae 100644 --- a/packages/query-parser/package.json +++ b/packages/query-parser/package.json @@ -2,31 +2,32 @@ "name": "@zipbul/query-parser", "version": "0.2.4", "description": "High-performance, RFC 3986 compliant query string parser with strict security controls", - "license": "MIT", - "author": "Junhyung Park (https://github.com/parkrevil)", - "repository": { - "type": "git", - "url": "https://github.com/zipbul/toolkit", - "directory": "packages/query-parser" - }, - "bugs": "https://github.com/zipbul/toolkit/issues", - "homepage": "https://github.com/zipbul/toolkit/tree/main/packages/query-parser#readme", "keywords": [ - "query-string", + "bun", + "http", "query-parser", + "query-string", "querystring", - "url", - "http", "rfc3986", "security", - "bun", "typescript", + "url", "zipbul" ], - "engines": { - "bun": ">=1.0.0" + "homepage": "https://github.com/zipbul/toolkit/tree/main/packages/query-parser#readme", + "bugs": "https://github.com/zipbul/toolkit/issues", + "license": "MIT", + "author": "Junhyung Park (https://github.com/parkrevil)", + "repository": { + "type": "git", + "url": "https://github.com/zipbul/toolkit", + "directory": "packages/query-parser" }, + "files": [ + "dist" + ], "type": "module", + "sideEffects": false, "module": "dist/index.js", "types": "dist/index.d.ts", "exports": { @@ -35,25 +36,24 @@ "import": "./dist/index.js" } }, - "files": [ - "dist" - ], - "sideEffects": false, "publishConfig": { "provenance": true }, "scripts": { + "bench": "bun run bench/query-parser.bench.ts", "build": "bun build index.ts --outdir dist --target bun --format esm --packages external --production && tsc -p tsconfig.build.json", - "test": "bun test", "coverage": "bun test --coverage", - "bench": "bun run bench/query-parser.bench.ts" + "test": "bun test" }, "dependencies": { "@zipbul/result": "workspace:*" }, "devDependencies": { + "@types/qs": "^6.9.18", "mitata": "^1.0.34", - "qs": "^6.14.0", - "@types/qs": "^6.9.18" + "qs": "^6.14.0" + }, + "engines": { + "bun": ">=1.0.0" } } diff --git a/packages/query-parser/src/options.spec.ts b/packages/query-parser/src/options.spec.ts index 71ee0e0..0332055 100644 --- a/packages/query-parser/src/options.spec.ts +++ b/packages/query-parser/src/options.spec.ts @@ -1,14 +1,16 @@ /* oxlint-disable typescript-eslint/no-unsafe-type-assertion */ -import { describe, expect, it } from 'bun:test'; -import { isErr } from '@zipbul/result'; import type { Err } from '@zipbul/result'; +import { isErr } from '@zipbul/result'; +import { describe, expect, it } from 'bun:test'; + +import type { QueryParserErrorData } from './interfaces'; +import type { ResolvedQueryParserOptions } from './types'; + import { DEFAULT_QUERY_PARSER_OPTIONS } from './constants'; import { QueryParserErrorReason } from './enums'; -import type { QueryParserErrorData } from './interfaces'; import { resolveQueryParserOptions, validateQueryParserOptions } from './options'; -import type { ResolvedQueryParserOptions } from './types'; const assertErr = (result: unknown): Err => { expect(isErr(result)).toBe(true); diff --git a/packages/query-parser/src/options.ts b/packages/query-parser/src/options.ts index b4f2420..e9c3a6f 100644 --- a/packages/query-parser/src/options.ts +++ b/packages/query-parser/src/options.ts @@ -1,11 +1,13 @@ -import { err } from '@zipbul/result'; import type { Result } from '@zipbul/result'; -import { DEFAULT_QUERY_PARSER_OPTIONS } from './constants'; -import { QueryParserErrorReason } from './enums'; +import { err } from '@zipbul/result'; + import type { QueryParserErrorData, QueryParserOptions } from './interfaces'; import type { ResolvedQueryParserOptions } from './types'; +import { DEFAULT_QUERY_PARSER_OPTIONS } from './constants'; +import { QueryParserErrorReason } from './enums'; + /** * Resolves partial {@link QueryParserOptions} into a fully populated * {@link ResolvedQueryParserOptions} by applying defaults via nullish coalescing. diff --git a/packages/query-parser/src/query-parser.spec.ts b/packages/query-parser/src/query-parser.spec.ts index 39504a3..2e0ac92 100644 --- a/packages/query-parser/src/query-parser.spec.ts +++ b/packages/query-parser/src/query-parser.spec.ts @@ -2,11 +2,11 @@ import { describe, expect, it } from 'bun:test'; -import { QueryParserErrorReason } from './enums'; -import { QueryParserError } from './interfaces'; import type { QueryParserOptions } from './interfaces'; import type { QueryArray, QueryValue, QueryValueRecord } from './types'; +import { QueryParserErrorReason } from './enums'; +import { QueryParserError } from './interfaces'; import { QueryParser } from './query-parser'; // --------------------------------------------------------------------------- @@ -87,9 +87,7 @@ describe('QueryParser', () => { it('should throw QueryParserError when duplicates is invalid', () => { // Act - const error = catchError(() => - QueryParser.create({ duplicates: 'invalid' } as unknown as QueryParserOptions), - ); + const error = catchError(() => QueryParser.create({ duplicates: 'invalid' } as unknown as QueryParserOptions)); // Assert expect(error).toBeInstanceOf(QueryParserError); diff --git a/packages/query-parser/src/query-parser.ts b/packages/query-parser/src/query-parser.ts index 05695ab..9ad9199 100644 --- a/packages/query-parser/src/query-parser.ts +++ b/packages/query-parser/src/query-parser.ts @@ -1,12 +1,14 @@ -import { err, isErr } from '@zipbul/result'; import type { Err, Result } from '@zipbul/result'; +import { err, isErr } from '@zipbul/result'; + +import type { QueryParserErrorData, QueryParserOptions } from './interfaces'; +import type { QueryArray, QueryContainer, QueryValue, QueryValueRecord, ResolvedQueryParserOptions } from './types'; + import { POISONED_KEYS } from './constants'; import { QueryParserErrorReason } from './enums'; import { QueryParserError } from './interfaces'; -import type { QueryParserErrorData, QueryParserOptions } from './interfaces'; import { resolveQueryParserOptions, validateQueryParserOptions } from './options'; -import type { QueryArray, QueryContainer, QueryValue, QueryValueRecord, ResolvedQueryParserOptions } from './types'; /** * High-performance, strict query string parser. diff --git a/packages/rate-limiter/CHANGELOG.md b/packages/rate-limiter/CHANGELOG.md index 5ede179..2554799 100644 --- a/packages/rate-limiter/CHANGELOG.md +++ b/packages/rate-limiter/CHANGELOG.md @@ -32,7 +32,6 @@ ### Patch Changes - 665e37c: chore: quality audit across all public packages - - Add `sideEffects: false` and `publishConfig.provenance` to all packages - Add `.npmignore` to all packages - Expand npm keywords for better discoverability @@ -51,7 +50,6 @@ - 3c01b4d: Initial release of `@zipbul/rate-limiter`. ### Features - - **3 algorithms**: GCRA, Sliding Window (default), Token Bucket - **Pluggable stores**: MemoryStore (in-memory), RedisStore (distributed via Lua CAS), withFallback (automatic failover) - **Compound rules**: multiple rate limit rules evaluated atomically (peek-all, consume-all with best-effort rollback) @@ -61,12 +59,10 @@ - **Zero external runtime dependencies** ### MemoryStore - - Configurable `maxSize` (FIFO eviction) and `ttl` (lazy expiry) - Injected `clock` for deterministic testing ### RedisStore - - Optimistic locking via Lua scripts (atomic compare-and-swap) - Adapter pattern: works with any Redis client implementing `eval()` - Configurable key prefix, TTL, and CAS retry limit @@ -82,7 +78,6 @@ - Initial release of `@zipbul/rate-limiter`. ### Features - - **3 algorithms**: GCRA, Sliding Window (default), Token Bucket - **Pluggable stores**: MemoryStore (in-memory), RedisStore (distributed via Lua CAS), withFallback (automatic failover) - **Compound rules**: multiple rate limit rules evaluated atomically (peek-all, consume-all with best-effort rollback) @@ -92,12 +87,10 @@ - **Zero external runtime dependencies** ### MemoryStore - - Configurable `maxSize` (FIFO eviction) and `ttl` (lazy expiry) - Injected `clock` for deterministic testing ### RedisStore - - Optimistic locking via Lua scripts (atomic compare-and-swap) - Adapter pattern: works with any Redis client implementing `eval()` - Configurable key prefix, TTL, and CAS retry limit diff --git a/packages/rate-limiter/README.ko.md b/packages/rate-limiter/README.ko.md index 845168e..b66f785 100644 --- a/packages/rate-limiter/README.ko.md +++ b/packages/rate-limiter/README.ko.md @@ -25,7 +25,7 @@ bun add @zipbul/rate-limiter import { RateLimiter, Algorithm, RateLimitAction } from '@zipbul/rate-limiter'; const limiter = RateLimiter.create({ - rules: { limit: 100, window: 60_000 }, // 분당 100회 + rules: { limit: 100, window: 60_000 }, // 분당 100회 algorithm: Algorithm.SlidingWindow, }); @@ -46,11 +46,11 @@ if (result.action === RateLimitAction.Allow) { 세 가지 내장 알고리즘을 제공합니다. 동일한 API를 공유하며, `algorithm`만 변경하면 됩니다. -| 알고리즘 | 적합한 용도 | 동작 | -|:---------|:-----------|:-----| -| `SlidingWindow` _(기본)_ | 일반 API 속도 제한 | 현재/이전 윈도우 간 가중 보간 | -| `TokenBucket` | 버스트 트래픽 + 안정적 충전 | 고정 속도로 연속 토큰 충전 | -| `GCRA` | 엄격한 스케줄링 / 셀 레이트 제어 | 요청별 이론적 도착 시간(TAT) 추적 | +| 알고리즘 | 적합한 용도 | 동작 | +| :----------------------- | :------------------------------- | :-------------------------------- | +| `SlidingWindow` _(기본)_ | 일반 API 속도 제한 | 현재/이전 윈도우 간 가중 보간 | +| `TokenBucket` | 버스트 트래픽 + 안정적 충전 | 고정 속도로 연속 토큰 충전 | +| `GCRA` | 엄격한 스케줄링 / 셀 레이트 제어 | 요청별 이론적 도착 시간(TAT) 추적 | ```typescript // Token Bucket @@ -72,11 +72,11 @@ RateLimiter.create({ ```typescript interface RateLimiterOptions { - rules: RateLimitRule | RateLimitRule[]; // 필수 - algorithm?: Algorithm; // 기본값: SlidingWindow - store?: RateLimiterStore; // 기본값: MemoryStore - clock?: () => number; // 기본값: Date.now - cost?: number; // 기본값: 1 + rules: RateLimitRule | RateLimitRule[]; // 필수 + algorithm?: Algorithm; // 기본값: SlidingWindow + store?: RateLimiterStore; // 기본값: MemoryStore + clock?: () => number; // 기본값: Date.now + cost?: number; // 기본값: 1 hooks?: RateLimiterHooks; } ``` @@ -157,13 +157,13 @@ RateLimiter.create({ type RateLimitResult = RateLimitAllowResult | RateLimitDenyResult; ``` -| 필드 | Allow | Deny | -|:-----|:------|:-----| -| `action` | `'allow'` | `'deny'` | -| `remaining` | 남은 토큰 | `0` | -| `limit` | 윈도우당 최대 토큰 | 윈도우당 최대 토큰 | -| `resetAt` | 윈도우 리셋 시각 (ms) | 윈도우 리셋 시각 (ms) | -| `retryAfter` | — | 다음 허용까지 ms | +| 필드 | Allow | Deny | +| :----------- | :-------------------- | :-------------------- | +| `action` | `'allow'` | `'deny'` | +| `remaining` | 남은 토큰 | `0` | +| `limit` | 윈도우당 최대 토큰 | 윈도우당 최대 토큰 | +| `resetAt` | 윈도우 리셋 시각 (ms) | 윈도우 리셋 시각 (ms) | +| `retryAfter` | — | 다음 허용까지 ms | ### `limiter.peek(key, options?)` @@ -185,8 +185,8 @@ type RateLimitResult = RateLimitAllowResult | RateLimitDenyResult; import { MemoryStore } from '@zipbul/rate-limiter'; new MemoryStore({ - maxSize: 10_000, // FIFO 퇴출 (기본: 무제한) - ttl: 120_000, // 지연 TTL (ms) (기본: 만료 없음) + maxSize: 10_000, // FIFO 퇴출 (기본: 무제한) + ttl: 120_000, // 지연 TTL (ms) (기본: 만료 없음) }); ``` @@ -201,12 +201,11 @@ import Redis from 'ioredis'; const redis = new Redis(); const store = new RedisStore({ client: { - eval: (script, keys, args) => - redis.eval(script, keys.length, ...keys, ...args), + eval: (script, keys, args) => redis.eval(script, keys.length, ...keys, ...args), }, - prefix: 'rl:', // 키 접두사 (기본: 'rl:') - ttl: 120_000, // PEXPIRE (ms) (기본: 만료 없음) - maxRetries: 5, // CAS 재시도 제한 (기본: 5) + prefix: 'rl:', // 키 접두사 (기본: 'rl:') + ttl: 120_000, // PEXPIRE (ms) (기본: 만료 없음) + maxRetries: 5, // CAS 재시도 제한 (기본: 5) }); RateLimiter.create({ @@ -244,23 +243,23 @@ try { await limiter.consume('user:123'); } catch (e) { if (e instanceof RateLimiterError) { - e.reason; // RateLimiterErrorReason.StoreError + e.reason; // RateLimiterErrorReason.StoreError e.message; // "Store operation failed" - e.cause; // 원본 에러 + e.cause; // 원본 에러 } } ``` ### `RateLimiterErrorReason` -| Reason | 발생 위치 | 설명 | -|:-------|:---------|:-----| -| `InvalidLimit` | `create()` | `limit`가 양의 정수가 아님 | -| `InvalidWindow` | `create()` | `window`가 양의 정수(ms)가 아님 | -| `InvalidCost` | `create()` / `consume()` | `cost`가 0 이상의 정수가 아님 | -| `InvalidAlgorithm` | `create()` | 지원하지 않는 알고리즘 | -| `EmptyRules` | `create()` | `rules`가 비어있음 | -| `StoreError` | `consume()` / `peek()` | 런타임 스토어 작업 실패 | +| Reason | 발생 위치 | 설명 | +| :----------------- | :----------------------- | :------------------------------ | +| `InvalidLimit` | `create()` | `limit`가 양의 정수가 아님 | +| `InvalidWindow` | `create()` | `window`가 양의 정수(ms)가 아님 | +| `InvalidCost` | `create()` / `consume()` | `cost`가 0 이상의 정수가 아님 | +| `InvalidAlgorithm` | `create()` | 지원하지 않는 알고리즘 | +| `EmptyRules` | `create()` | `rules`가 비어있음 | +| `StoreError` | `consume()` / `peek()` | 런타임 스토어 작업 실패 |
@@ -272,10 +271,18 @@ try { import type { RateLimiterStore, StoreEntry } from '@zipbul/rate-limiter'; class MyStore implements RateLimiterStore { - update(key: string, updater: (current: StoreEntry | null) => StoreEntry): StoreEntry | Promise { /* ... */ } - get(key: string): StoreEntry | null | Promise { /* ... */ } - delete(key: string): void | Promise { /* ... */ } - clear(): void | Promise { /* ... */ } + update(key: string, updater: (current: StoreEntry | null) => StoreEntry): StoreEntry | Promise { + /* ... */ + } + get(key: string): StoreEntry | null | Promise { + /* ... */ + } + delete(key: string): void | Promise { + /* ... */ + } + clear(): void | Promise { + /* ... */ + } } ``` diff --git a/packages/rate-limiter/README.md b/packages/rate-limiter/README.md index aa6c7d9..e0d807b 100644 --- a/packages/rate-limiter/README.md +++ b/packages/rate-limiter/README.md @@ -25,7 +25,7 @@ bun add @zipbul/rate-limiter import { RateLimiter, Algorithm, RateLimitAction } from '@zipbul/rate-limiter'; const limiter = RateLimiter.create({ - rules: { limit: 100, window: 60_000 }, // 100 requests per minute + rules: { limit: 100, window: 60_000 }, // 100 requests per minute algorithm: Algorithm.SlidingWindow, }); @@ -46,11 +46,11 @@ if (result.action === RateLimitAction.Allow) { Three built-in algorithms are available. All share the same API — just change `algorithm`. -| Algorithm | Best for | Behavior | -|:----------|:---------|:---------| -| `SlidingWindow` _(default)_ | General API rate limiting | Weighted interpolation between current and previous window | -| `TokenBucket` | Bursty traffic with steady refill | Continuous token refill at a fixed rate | -| `GCRA` | Strict scheduling / cell rate control | Tracks Theoretical Arrival Time (TAT) per request | +| Algorithm | Best for | Behavior | +| :-------------------------- | :------------------------------------ | :--------------------------------------------------------- | +| `SlidingWindow` _(default)_ | General API rate limiting | Weighted interpolation between current and previous window | +| `TokenBucket` | Bursty traffic with steady refill | Continuous token refill at a fixed rate | +| `GCRA` | Strict scheduling / cell rate control | Tracks Theoretical Arrival Time (TAT) per request | ```typescript // Token Bucket @@ -72,11 +72,11 @@ RateLimiter.create({ ```typescript interface RateLimiterOptions { - rules: RateLimitRule | RateLimitRule[]; // Required - algorithm?: Algorithm; // Default: SlidingWindow - store?: RateLimiterStore; // Default: MemoryStore - clock?: () => number; // Default: Date.now - cost?: number; // Default: 1 + rules: RateLimitRule | RateLimitRule[]; // Required + algorithm?: Algorithm; // Default: SlidingWindow + store?: RateLimiterStore; // Default: MemoryStore + clock?: () => number; // Default: Date.now + cost?: number; // Default: 1 hooks?: RateLimiterHooks; } ``` @@ -157,13 +157,13 @@ Consumes tokens for the given key. Returns a discriminated union: type RateLimitResult = RateLimitAllowResult | RateLimitDenyResult; ``` -| Field | Allow | Deny | -|:------|:------|:-----| -| `action` | `'allow'` | `'deny'` | -| `remaining` | Tokens left | `0` | -| `limit` | Max tokens per window | Max tokens per window | -| `resetAt` | Window reset timestamp (ms) | Window reset timestamp (ms) | -| `retryAfter` | — | ms until next allowed request | +| Field | Allow | Deny | +| :----------- | :-------------------------- | :---------------------------- | +| `action` | `'allow'` | `'deny'` | +| `remaining` | Tokens left | `0` | +| `limit` | Max tokens per window | Max tokens per window | +| `resetAt` | Window reset timestamp (ms) | Window reset timestamp (ms) | +| `retryAfter` | — | ms until next allowed request | ### `limiter.peek(key, options?)` @@ -185,8 +185,8 @@ Default in-memory store. Suitable for single-process deployments. import { MemoryStore } from '@zipbul/rate-limiter'; new MemoryStore({ - maxSize: 10_000, // FIFO eviction (default: unlimited) - ttl: 120_000, // Lazy TTL in ms (default: no expiry) + maxSize: 10_000, // FIFO eviction (default: unlimited) + ttl: 120_000, // Lazy TTL in ms (default: no expiry) }); ``` @@ -201,12 +201,11 @@ import Redis from 'ioredis'; const redis = new Redis(); const store = new RedisStore({ client: { - eval: (script, keys, args) => - redis.eval(script, keys.length, ...keys, ...args), + eval: (script, keys, args) => redis.eval(script, keys.length, ...keys, ...args), }, - prefix: 'rl:', // Key prefix (default: 'rl:') - ttl: 120_000, // PEXPIRE in ms (default: no expiry) - maxRetries: 5, // CAS retry limit (default: 5) + prefix: 'rl:', // Key prefix (default: 'rl:') + ttl: 120_000, // PEXPIRE in ms (default: no expiry) + maxRetries: 5, // CAS retry limit (default: 5) }); RateLimiter.create({ @@ -244,23 +243,23 @@ try { await limiter.consume('user:123'); } catch (e) { if (e instanceof RateLimiterError) { - e.reason; // RateLimiterErrorReason.StoreError + e.reason; // RateLimiterErrorReason.StoreError e.message; // "Store operation failed" - e.cause; // Original error + e.cause; // Original error } } ``` ### `RateLimiterErrorReason` -| Reason | Thrown by | Description | -|:-------|:---------|:------------| -| `InvalidLimit` | `create()` | `limit` must be a positive integer | -| `InvalidWindow` | `create()` | `window` must be a positive integer (ms) | -| `InvalidCost` | `create()` / `consume()` | `cost` must be a non-negative integer | -| `InvalidAlgorithm` | `create()` | Unsupported algorithm value | -| `EmptyRules` | `create()` | `rules` must not be empty | -| `StoreError` | `consume()` / `peek()` | Store operation failed at runtime | +| Reason | Thrown by | Description | +| :----------------- | :----------------------- | :--------------------------------------- | +| `InvalidLimit` | `create()` | `limit` must be a positive integer | +| `InvalidWindow` | `create()` | `window` must be a positive integer (ms) | +| `InvalidCost` | `create()` / `consume()` | `cost` must be a non-negative integer | +| `InvalidAlgorithm` | `create()` | Unsupported algorithm value | +| `EmptyRules` | `create()` | `rules` must not be empty | +| `StoreError` | `consume()` / `peek()` | Store operation failed at runtime |
@@ -272,10 +271,18 @@ Implement the `RateLimiterStore` interface to use any backend: import type { RateLimiterStore, StoreEntry } from '@zipbul/rate-limiter'; class MyStore implements RateLimiterStore { - update(key: string, updater: (current: StoreEntry | null) => StoreEntry): StoreEntry | Promise { /* ... */ } - get(key: string): StoreEntry | null | Promise { /* ... */ } - delete(key: string): void | Promise { /* ... */ } - clear(): void | Promise { /* ... */ } + update(key: string, updater: (current: StoreEntry | null) => StoreEntry): StoreEntry | Promise { + /* ... */ + } + get(key: string): StoreEntry | null | Promise { + /* ... */ + } + delete(key: string): void | Promise { + /* ... */ + } + clear(): void | Promise { + /* ... */ + } } ``` diff --git a/packages/rate-limiter/bunfig.toml b/packages/rate-limiter/bunfig.toml index f594f80..8b79c16 100644 --- a/packages/rate-limiter/bunfig.toml +++ b/packages/rate-limiter/bunfig.toml @@ -3,12 +3,7 @@ onlyFailures = true coverage = true coverageReporter = ["text", "lcov"] coverageThreshold = 0.95 -coveragePathIgnorePatterns = [ - "node_modules/**", - "dist/**", - "../result/**", - "test/**" -] +coveragePathIgnorePatterns = ["node_modules/**", "dist/**", "../result/**", "test/**"] [test.reporter] dots = true diff --git a/packages/rate-limiter/docker-compose.yml b/packages/rate-limiter/docker-compose.yml index e31d8f7..b9224af 100644 --- a/packages/rate-limiter/docker-compose.yml +++ b/packages/rate-limiter/docker-compose.yml @@ -2,9 +2,9 @@ services: redis: image: redis:7-alpine ports: - - "6379:6379" + - '6379:6379' healthcheck: - test: ["CMD", "redis-cli", "ping"] + test: ['CMD', 'redis-cli', 'ping'] interval: 1s timeout: 3s retries: 5 diff --git a/packages/rate-limiter/package.json b/packages/rate-limiter/package.json index b64816c..7645c10 100644 --- a/packages/rate-limiter/package.json +++ b/packages/rate-limiter/package.json @@ -2,30 +2,31 @@ "name": "@zipbul/rate-limiter", "version": "0.2.4", "description": "Framework-agnostic rate limiter engine with multiple algorithms and pluggable stores", - "license": "MIT", - "author": "Junhyung Park (https://github.com/parkrevil)", - "repository": { - "type": "git", - "url": "https://github.com/zipbul/toolkit", - "directory": "packages/rate-limiter" - }, - "bugs": "https://github.com/zipbul/toolkit/issues", - "homepage": "https://github.com/zipbul/toolkit/tree/main/packages/rate-limiter#readme", "keywords": [ - "rate-limiter", + "bun", + "http", "rate-limit", - "throttle", + "rate-limiter", "sliding-window", + "throttle", "token-bucket", - "http", - "bun", "typescript", "zipbul" ], - "engines": { - "bun": ">=1.0.0" + "homepage": "https://github.com/zipbul/toolkit/tree/main/packages/rate-limiter#readme", + "bugs": "https://github.com/zipbul/toolkit/issues", + "license": "MIT", + "author": "Junhyung Park (https://github.com/parkrevil)", + "repository": { + "type": "git", + "url": "https://github.com/zipbul/toolkit", + "directory": "packages/rate-limiter" }, + "files": [ + "dist" + ], "type": "module", + "sideEffects": false, "module": "dist/index.js", "types": "dist/index.d.ts", "exports": { @@ -34,22 +35,21 @@ "import": "./dist/index.js" } }, - "files": [ - "dist" - ], - "sideEffects": false, "publishConfig": { "provenance": true }, "scripts": { "build": "bun build index.ts --outdir dist --target bun --format esm --packages external --production && tsc -p tsconfig.build.json", - "test": "bun test", - "coverage": "bun test --coverage" + "coverage": "bun test --coverage", + "test": "bun test" }, "dependencies": { "@zipbul/result": "workspace:*" }, "devDependencies": { "ioredis": "^5.10.0" + }, + "engines": { + "bun": ">=1.0.0" } } diff --git a/packages/rate-limiter/src/algorithms/gcra.ts b/packages/rate-limiter/src/algorithms/gcra.ts index 6f465bd..b2b2248 100644 --- a/packages/rate-limiter/src/algorithms/gcra.ts +++ b/packages/rate-limiter/src/algorithms/gcra.ts @@ -1,7 +1,8 @@ -import { RateLimitAction } from '../enums'; import type { RateLimitRule, RateLimiterStore, StoreEntry } from '../interfaces'; import type { RateLimitResult } from '../types'; +import { RateLimitAction } from '../enums'; + /** * Generic Cell Rate Algorithm (GCRA). * @@ -28,7 +29,7 @@ export function gcra( let result!: RateLimitResult; - const entry = store.update(key, (current) => { + const entry = store.update(key, current => { const tat = current !== null ? Math.max(current.value, now) : now; const newTat = tat + increment; const allowAt = newTat - burstOffset; @@ -42,7 +43,7 @@ export function gcra( retryAfter: Math.ceil(allowAt - now), }; // Deny: return existing state unchanged, or minimal entry for new keys - if (current !== null) return current; + if (current !== null) {return current;} return { value: 0, prev: 0, windowStart: 0 }; } @@ -98,17 +99,12 @@ async function peekGcra( /** * Refunds a previously consumed GCRA request by reducing the TAT. */ -export function refundGcra( - key: string, - rule: RateLimitRule, - cost: number, - store: RateLimiterStore, -): void | Promise { +export function refundGcra(key: string, rule: RateLimitRule, cost: number, store: RateLimiterStore): void | Promise { const emissionInterval = rule.window / rule.limit; const increment = emissionInterval * cost; const result = store.update(key, (current: StoreEntry | null) => { - if (current === null) return { value: 0, prev: 0, windowStart: 0 }; + if (current === null) {return { value: 0, prev: 0, windowStart: 0 };} return { value: Math.max(0, current.value - increment), prev: 0, windowStart: 0 }; }); - if (result instanceof Promise) return result.then(() => {}); + if (result instanceof Promise) {return result.then(() => {});} } diff --git a/packages/rate-limiter/src/algorithms/sliding-window.ts b/packages/rate-limiter/src/algorithms/sliding-window.ts index e935c40..5191b7b 100644 --- a/packages/rate-limiter/src/algorithms/sliding-window.ts +++ b/packages/rate-limiter/src/algorithms/sliding-window.ts @@ -1,7 +1,8 @@ -import { RateLimitAction } from '../enums'; import type { RateLimitRule, RateLimiterStore, StoreEntry } from '../interfaces'; import type { RateLimitResult } from '../types'; +import { RateLimitAction } from '../enums'; + /** * Sliding Window Counter algorithm. * @@ -24,10 +25,10 @@ export function slidingWindow( let result!: RateLimitResult; - const entry = store.update(key, (current) => { + const entry = store.update(key, current => { const { count, prev, windowStart } = resolveWindowState(current, now, rule); - const weight = 1 - ((now - windowStart) / rule.window); + const weight = 1 - (now - windowStart) / rule.window; const estimated = count + Math.floor(prev * weight); if (estimated + cost > rule.limit) { @@ -41,7 +42,7 @@ export function slidingWindow( retryAfter, }; // Deny: return existing state unchanged - if (current !== null) return current; + if (current !== null) {return current;} return { value: 0, prev: 0, windowStart: now }; } @@ -100,7 +101,7 @@ async function peekSlidingWindow( const current = await store.get(key); const { count, prev, windowStart } = resolveWindowState(current, now, rule); - const weight = 1 - ((now - windowStart) / rule.window); + const weight = 1 - (now - windowStart) / rule.window; const estimated = count + Math.floor(prev * weight); const resetAt = windowStart + rule.window; @@ -133,8 +134,8 @@ export function refundSlidingWindow( store: RateLimiterStore, ): void | Promise { const result = store.update(key, (current: StoreEntry | null) => { - if (current === null) return { value: 0, prev: 0, windowStart: 0 }; + if (current === null) {return { value: 0, prev: 0, windowStart: 0 };} return { value: Math.max(0, current.value - cost), prev: current.prev, windowStart: current.windowStart }; }); - if (result instanceof Promise) return result.then(() => {}); + if (result instanceof Promise) {return result.then(() => {});} } diff --git a/packages/rate-limiter/src/algorithms/token-bucket.ts b/packages/rate-limiter/src/algorithms/token-bucket.ts index bf6fe8b..6108cd3 100644 --- a/packages/rate-limiter/src/algorithms/token-bucket.ts +++ b/packages/rate-limiter/src/algorithms/token-bucket.ts @@ -1,7 +1,8 @@ -import { RateLimitAction } from '../enums'; import type { RateLimitRule, RateLimiterStore, StoreEntry } from '../interfaces'; import type { RateLimitResult } from '../types'; +import { RateLimitAction } from '../enums'; + /** * Token Bucket algorithm. * @@ -26,7 +27,7 @@ export function tokenBucket( let result!: RateLimitResult; - const entry = store.update(key, (current) => { + const entry = store.update(key, current => { let available: number; let lastRefill: number; @@ -58,9 +59,7 @@ export function tokenBucket( } const remaining = available - cost; - const resetAt = remaining >= rule.limit - ? now - : now + Math.ceil((rule.limit - remaining) / refillRate); + const resetAt = remaining >= rule.limit ? now : now + Math.ceil((rule.limit - remaining) / refillRate); result = { action: RateLimitAction.Allow, @@ -110,9 +109,7 @@ async function peekTokenBucket( } const remaining = available - cost; - const resetAt = remaining >= rule.limit - ? now - : now + Math.ceil((rule.limit - remaining) / refillRate); + const resetAt = remaining >= rule.limit ? now : now + Math.ceil((rule.limit - remaining) / refillRate); return { action: RateLimitAction.Allow, @@ -125,15 +122,10 @@ async function peekTokenBucket( /** * Refunds a previously consumed token bucket request by adding tokens back. */ -export function refundTokenBucket( - key: string, - rule: RateLimitRule, - cost: number, - store: RateLimiterStore, -): void | Promise { +export function refundTokenBucket(key: string, rule: RateLimitRule, cost: number, store: RateLimiterStore): void | Promise { const result = store.update(key, (current: StoreEntry | null) => { - if (current === null) return { value: rule.limit, prev: 0, windowStart: 0 }; + if (current === null) {return { value: rule.limit, prev: 0, windowStart: 0 };} return { value: Math.min(rule.limit, current.value + cost), prev: 0, windowStart: current.windowStart }; }); - if (result instanceof Promise) return result.then(() => {}); + if (result instanceof Promise) {return result.then(() => {});} } diff --git a/packages/rate-limiter/src/options.ts b/packages/rate-limiter/src/options.ts index 42b298e..4f49d1a 100644 --- a/packages/rate-limiter/src/options.ts +++ b/packages/rate-limiter/src/options.ts @@ -1,10 +1,12 @@ -import { err } from '@zipbul/result'; import type { Result } from '@zipbul/result'; -import { DEFAULT_ALGORITHM, DEFAULT_CLOCK, DEFAULT_COST, DEFAULT_HOOKS } from './constants'; -import { Algorithm, RateLimiterErrorReason } from './enums'; +import { err } from '@zipbul/result'; + import type { RateLimiterErrorData, RateLimiterOptions } from './interfaces'; import type { ResolvedRateLimiterOptions } from './types'; + +import { DEFAULT_ALGORITHM, DEFAULT_CLOCK, DEFAULT_COST, DEFAULT_HOOKS } from './constants'; +import { Algorithm, RateLimiterErrorReason } from './enums'; import { MemoryStore } from './stores/memory'; /** diff --git a/packages/rate-limiter/src/rate-limiter.spec.ts b/packages/rate-limiter/src/rate-limiter.spec.ts index 358255a..6cbe834 100644 --- a/packages/rate-limiter/src/rate-limiter.spec.ts +++ b/packages/rate-limiter/src/rate-limiter.spec.ts @@ -1,12 +1,13 @@ import { describe, test, expect, beforeEach } from 'bun:test'; -import { RateLimiter } from './rate-limiter'; -import { RateLimiterError } from './interfaces'; import type { RateLimitAllowResult, RateLimitDenyResult, RateLimiterStore, StoreEntry } from './interfaces'; + import { RateLimitAction, RateLimiterErrorReason, Algorithm } from './enums'; -import { MemoryStore } from './stores/memory'; -import { WithFallbackStore, withFallback } from './stores/with-fallback'; +import { RateLimiterError } from './interfaces'; import { validateRateLimiterOptions, resolveRateLimiterOptions } from './options'; +import { RateLimiter } from './rate-limiter'; +import { MemoryStore } from './stores/memory'; +import { withFallback } from './stores/with-fallback'; // ── Helpers ───────────────────────────────────────────────────────── @@ -14,8 +15,12 @@ function createClock(start = 0) { let now = start; return { now: () => now, - advance: (ms: number) => { now += ms; }, - set: (ms: number) => { now = ms; }, + advance: (ms: number) => { + now += ms; + }, + set: (ms: number) => { + now = ms; + }, }; } @@ -143,7 +148,9 @@ describe('per-call cost validation', () => { describe('SlidingWindow algorithm', () => { let clock: ReturnType; - beforeEach(() => { clock = createClock(1000); }); + beforeEach(() => { + clock = createClock(1000); + }); test('allows requests within limit', async () => { const limiter = RateLimiter.create({ @@ -305,7 +312,9 @@ describe('SlidingWindow algorithm', () => { describe('GCRA algorithm', () => { let clock: ReturnType; - beforeEach(() => { clock = createClock(1000); }); + beforeEach(() => { + clock = createClock(1000); + }); test('allows requests within limit', async () => { const limiter = RateLimiter.create({ @@ -424,7 +433,9 @@ describe('GCRA algorithm', () => { describe('TokenBucket algorithm', () => { let clock: ReturnType; - beforeEach(() => { clock = createClock(1000); }); + beforeEach(() => { + clock = createClock(1000); + }); test('allows requests within bucket', async () => { const limiter = RateLimiter.create({ @@ -464,7 +475,7 @@ describe('TokenBucket algorithm', () => { clock: clock.now, }); - for (let i = 0; i < 10; i++) await limiter.consume('user1'); + for (let i = 0; i < 10; i++) {await limiter.consume('user1');} clock.advance(5000); const r = await limiter.consume('user1'); @@ -480,7 +491,7 @@ describe('TokenBucket algorithm', () => { }); // Drain all tokens - for (let i = 0; i < 5; i++) await limiter.consume('user1'); + for (let i = 0; i < 5; i++) {await limiter.consume('user1');} expect((await limiter.consume('user1')).action).toBe(RateLimitAction.Deny); // Wait much longer than needed to fully refill @@ -784,8 +795,8 @@ describe('compound rules', () => { const inner = new MemoryStore(); let rule0UpdateCount = 0; const racyStore: RateLimiterStore = { - get: (key) => inner.get(key), - delete: (key) => inner.delete(key), + get: key => inner.get(key), + delete: key => inner.delete(key), clear: () => inner.clear(), update: (key, updater) => { const result = inner.update(key, updater); @@ -795,7 +806,9 @@ describe('compound rules', () => { // After rule_0 consumed, deplete rule_1 to trigger race if (rule0UpdateCount === 2) { inner.update(key.replace(':rule_0', ':rule_1'), () => ({ - value: 2, prev: 0, windowStart: 1000, + value: 2, + prev: 0, + windowStart: 1000, })); } } @@ -806,7 +819,7 @@ describe('compound rules', () => { const limiter = RateLimiter.create({ rules: [ { limit: 10, window: 1000 }, - { limit: 2, window: 1000 }, // limit=2 so first consume passes, race depletes it + { limit: 2, window: 1000 }, // limit=2 so first consume passes, race depletes it ], algorithm: Algorithm.SlidingWindow, clock: clock.now, @@ -834,8 +847,8 @@ describe('compound rules', () => { const inner = new MemoryStore(); let rule0UpdateCount = 0; const racyStore: RateLimiterStore = { - get: (key) => inner.get(key), - delete: (key) => inner.delete(key), + get: key => inner.get(key), + delete: key => inner.delete(key), clear: () => inner.clear(), update: (key, updater) => { const result = inner.update(key, updater); @@ -844,7 +857,9 @@ describe('compound rules', () => { if (rule0UpdateCount === 2) { // Set rule_1 TAT far in the future to force deny inner.update(key.replace(':rule_0', ':rule_1'), () => ({ - value: clock.now() + 50000, prev: 0, windowStart: 0, + value: clock.now() + 50000, + prev: 0, + windowStart: 0, })); } } @@ -879,8 +894,8 @@ describe('compound rules', () => { const inner = new MemoryStore(); let rule0UpdateCount = 0; const racyStore: RateLimiterStore = { - get: (key) => inner.get(key), - delete: (key) => inner.delete(key), + get: key => inner.get(key), + delete: key => inner.delete(key), clear: () => inner.clear(), update: (key, updater) => { const result = inner.update(key, updater); @@ -889,7 +904,9 @@ describe('compound rules', () => { if (rule0UpdateCount === 2) { // Set rule_1 tokens to 0 to force deny inner.update(key.replace(':rule_0', ':rule_1'), () => ({ - value: 0, prev: 0, windowStart: clock.now(), + value: 0, + prev: 0, + windowStart: clock.now(), })); } } @@ -922,13 +939,13 @@ describe('compound rules', () => { test.each([Algorithm.SlidingWindow, Algorithm.GCRA, Algorithm.TokenBucket])( 'refunds with async store (%s)', - async (algorithm) => { + async algorithm => { const clock = createClock(1000); const inner = new MemoryStore(); let rule0UpdateCount = 0; const racyAsyncStore: RateLimiterStore = { - get: async (key) => inner.get(key), - delete: async (key) => inner.delete(key), + get: async key => inner.get(key), + delete: async key => inner.delete(key), clear: async () => inner.clear(), update: async (key, updater) => { const result = inner.update(key, updater); @@ -972,8 +989,8 @@ describe('compound rules', () => { const inner = new MemoryStore(); let rule0UpdateCount = 0; const racyStore: RateLimiterStore = { - get: (key) => inner.get(key), - delete: (key) => inner.delete(key), + get: key => inner.get(key), + delete: key => inner.delete(key), clear: () => inner.clear(), update: (key, updater) => { const result = inner.update(key, updater); @@ -982,7 +999,9 @@ describe('compound rules', () => { if (rule0UpdateCount === 2) { // Set rule_1 to 0 tokens to force deny inner.update(key.replace(':rule_0', ':rule_1'), () => ({ - value: 0, prev: 0, windowStart: clock.now(), + value: 0, + prev: 0, + windowStart: clock.now(), })); } // After the race is triggered, make rule_0 refund fail @@ -1110,8 +1129,12 @@ describe('hooks', () => { algorithm: Algorithm.SlidingWindow, clock: clock.now, hooks: { - onConsume: () => { hookCalled = true; }, - onLimit: () => { hookCalled = true; }, + onConsume: () => { + hookCalled = true; + }, + onLimit: () => { + hookCalled = true; + }, }, }); @@ -1126,7 +1149,9 @@ describe('hooks', () => { algorithm: Algorithm.SlidingWindow, clock: clock.now, hooks: { - onConsume: () => { throw new Error('hook error'); }, + onConsume: () => { + throw new Error('hook error'); + }, }, }); @@ -1148,10 +1173,18 @@ describe('store error handling', () => { test('wraps store errors in RateLimiterError with cause', async () => { const originalError = new Error('connection refused'); const failingStore: RateLimiterStore = { - update: () => { throw originalError; }, - get: () => { throw originalError; }, - delete: () => { throw originalError; }, - clear: () => { throw originalError; }, + update: () => { + throw originalError; + }, + get: () => { + throw originalError; + }, + delete: () => { + throw originalError; + }, + clear: () => { + throw originalError; + }, }; const limiter = RateLimiter.create({ @@ -1194,8 +1227,12 @@ describe('store error handling', () => { const limiter = RateLimiter.create({ rules: { limit: 10, window: 1000 }, store: { - update: () => { throw 'string error'; }, - get: () => { throw 'string error'; }, + update: () => { + throw 'string error'; + }, + get: () => { + throw 'string error'; + }, delete: () => {}, clear: () => {}, }, @@ -1213,8 +1250,12 @@ describe('store error handling', () => { const limiter = RateLimiter.create({ rules: { limit: 10, window: 1000 }, store: { - update: () => { throw new Error('fail'); }, - get: () => { throw new Error('fail'); }, + update: () => { + throw new Error('fail'); + }, + get: () => { + throw new Error('fail'); + }, delete: () => {}, clear: () => {}, }, @@ -1250,7 +1291,7 @@ describe('MemoryStore', () => { store.update('key1', () => ({ value: 1, prev: 0, windowStart: 1000 })); let received: StoreEntry | null = null; - store.update('key1', (current) => { + store.update('key1', current => { received = current; return { value: 2, prev: 0, windowStart: 1000 }; }); @@ -1306,7 +1347,7 @@ describe('MemoryStore', () => { clock.advance(50); let receivedCurrent: StoreEntry | null = { value: 999, prev: 0, windowStart: 0 }; - store.update('key', (current) => { + store.update('key', current => { receivedCurrent = current; return { value: 2, prev: 0, windowStart: 0 }; }); @@ -1373,9 +1414,15 @@ describe('WithFallbackStore', () => { test('falls back when primary fails', async () => { const primary: RateLimiterStore = { - update: () => { throw new Error('down'); }, - get: () => { throw new Error('down'); }, - delete: () => { throw new Error('down'); }, + update: () => { + throw new Error('down'); + }, + get: () => { + throw new Error('down'); + }, + delete: () => { + throw new Error('down'); + }, clear: () => {}, }; const fallback = new MemoryStore(); @@ -1411,9 +1458,15 @@ describe('WithFallbackStore', () => { test('delete falls back when primary fails', async () => { const primary: RateLimiterStore = { - update: () => { throw new Error('down'); }, - get: () => { throw new Error('down'); }, - delete: () => { throw new Error('down'); }, + update: () => { + throw new Error('down'); + }, + get: () => { + throw new Error('down'); + }, + delete: () => { + throw new Error('down'); + }, clear: () => {}, }; const fallback = new MemoryStore(); @@ -1468,7 +1521,9 @@ describe('WithFallbackStore', () => { // Force primary to fail by making update throw const origUpdate = primary.update.bind(primary); - primary.update = () => { throw new Error('down'); }; + primary.update = () => { + throw new Error('down'); + }; await store.update('key', () => ({ value: 1, prev: 0, windowStart: 0 })); expect(fallback.get('key')).toEqual({ value: 1, prev: 0, windowStart: 0 }); @@ -1492,13 +1547,17 @@ describe('WithFallbackStore', () => { const fallback = new MemoryStore(); const store = withFallback(primary, fallback, { - healthCheck: async () => { throw new Error('check failed'); }, + healthCheck: async () => { + throw new Error('check failed'); + }, restoreInterval: 50, }); // Force fallback const origUpdate = primary.update.bind(primary); - primary.update = () => { throw new Error('down'); }; + primary.update = () => { + throw new Error('down'); + }; await store.update('key', () => ({ value: 1, prev: 0, windowStart: 0 })); primary.update = origUpdate; @@ -1575,10 +1634,7 @@ describe('result shape', () => { describe('RateLimiterError', () => { test('has correct name, reason, and cause', () => { const cause = new Error('original'); - const error = new RateLimiterError( - { reason: RateLimiterErrorReason.StoreError, message: 'test message' }, - { cause }, - ); + const error = new RateLimiterError({ reason: RateLimiterErrorReason.StoreError, message: 'test message' }, { cause }); expect(error.name).toBe('RateLimiterError'); expect(error.reason).toBe(RateLimiterErrorReason.StoreError); @@ -1630,7 +1686,9 @@ describe('reset', () => { store: { update: () => ({ value: 0, prev: 0, windowStart: 0 }), get: () => null, - delete: () => { throw new Error('fail'); }, + delete: () => { + throw new Error('fail'); + }, clear: () => {}, }, }); @@ -1656,7 +1714,7 @@ describe('reset', () => { get: () => null, delete: () => { deleteCount++; - if (deleteCount === 2) throw new Error('second delete fails'); + if (deleteCount === 2) {throw new Error('second delete fails');} }, clear: () => {}, }, diff --git a/packages/rate-limiter/src/rate-limiter.ts b/packages/rate-limiter/src/rate-limiter.ts index 5878f3b..cd62e49 100644 --- a/packages/rate-limiter/src/rate-limiter.ts +++ b/packages/rate-limiter/src/rate-limiter.ts @@ -1,13 +1,14 @@ import { isErr } from '@zipbul/result'; -import { Algorithm, RateLimitAction, RateLimiterErrorReason } from './enums'; -import { RateLimiterError } from './interfaces'; import type { ConsumeOptions, RateLimiterOptions } from './interfaces'; -import { resolveRateLimiterOptions, validateRateLimiterOptions } from './options'; import type { AlgorithmFn, RateLimitResult, RefundFn, ResolvedRateLimiterOptions } from './types'; + import { gcra, refundGcra } from './algorithms/gcra'; import { slidingWindow, refundSlidingWindow } from './algorithms/sliding-window'; import { tokenBucket, refundTokenBucket } from './algorithms/token-bucket'; +import { Algorithm, RateLimitAction, RateLimiterErrorReason } from './enums'; +import { RateLimiterError } from './interfaces'; +import { resolveRateLimiterOptions, validateRateLimiterOptions } from './options'; const ALGORITHM_MAP: Record = { [Algorithm.GCRA]: gcra, @@ -82,7 +83,7 @@ export class RateLimiter { result = await this.consumeCompound(key, cost, now); } } catch (error) { - if (error instanceof RateLimiterError) throw error; + if (error instanceof RateLimiterError) {throw error;} throw new RateLimiterError( { reason: RateLimiterErrorReason.StoreError, message: error instanceof Error ? error.message : 'Store operation failed' }, { cause: error }, @@ -124,7 +125,7 @@ export class RateLimiter { return await this.peekCompound(key, cost, now); } catch (error) { - if (error instanceof RateLimiterError) throw error; + if (error instanceof RateLimiterError) {throw error;} throw new RateLimiterError( { reason: RateLimiterErrorReason.StoreError, message: error instanceof Error ? error.message : 'Store operation failed' }, { cause: error }, @@ -150,7 +151,7 @@ export class RateLimiter { } } } catch (error) { - if (error instanceof RateLimiterError) throw error; + if (error instanceof RateLimiterError) {throw error;} throw new RateLimiterError( { reason: RateLimiterErrorReason.StoreError, message: error instanceof Error ? error.message : 'Store operation failed' }, { cause: error }, @@ -176,7 +177,7 @@ export class RateLimiter { // Check for any deny — return the most restrictive (longest retryAfter) const mostRestrictiveDeny = this.findMostRestrictiveDeny(peekResults); - if (mostRestrictiveDeny !== null) return mostRestrictiveDeny; + if (mostRestrictiveDeny !== null) {return mostRestrictiveDeny;} // Phase 2: All passed — consume all rules, with rollback on race deny const consumeResults: RateLimitResult[] = []; @@ -216,7 +217,7 @@ export class RateLimiter { } const mostRestrictiveDeny = this.findMostRestrictiveDeny(results); - if (mostRestrictiveDeny !== null) return mostRestrictiveDeny; + if (mostRestrictiveDeny !== null) {return mostRestrictiveDeny;} return this.findMostRestrictiveAllow(results); } @@ -236,7 +237,7 @@ export class RateLimiter { private findMostRestrictiveAllow(results: RateLimitResult[]): RateLimitResult { // Defensive: if any consume returned deny (TOCTOU race), return it const raceDeny = this.findMostRestrictiveDeny(results); - if (raceDeny !== null) return raceDeny; + if (raceDeny !== null) {return raceDeny;} let best = results[0]!; for (let i = 1; i < results.length; i++) { diff --git a/packages/rate-limiter/src/stores/memory.ts b/packages/rate-limiter/src/stores/memory.ts index b0f732e..b51f793 100644 --- a/packages/rate-limiter/src/stores/memory.ts +++ b/packages/rate-limiter/src/stores/memory.ts @@ -39,9 +39,7 @@ export class MemoryStore implements RateLimiterStore { const next = updater(current); const existing = this.map.get(key); // Preserve createdAt when entry exists and state is unchanged (deny path) - const createdAt = existing !== undefined && next === current - ? existing.createdAt - : this.clock(); + const createdAt = existing !== undefined && next === current ? existing.createdAt : this.clock(); this.map.set(key, { entry: next, createdAt }); this.evictIfNeeded(); return next; @@ -66,7 +64,7 @@ export class MemoryStore implements RateLimiterStore { private getValid(key: string): StoreEntry | null { const timed = this.map.get(key); - if (timed === undefined) return null; + if (timed === undefined) {return null;} if (this.ttl > 0 && this.clock() - timed.createdAt >= this.ttl) { this.map.delete(key); @@ -77,11 +75,11 @@ export class MemoryStore implements RateLimiterStore { } private evictIfNeeded(): void { - if (this.maxSize <= 0) return; + if (this.maxSize <= 0) {return;} while (this.map.size > this.maxSize) { // Map iteration order is insertion order — first key is oldest const oldest = this.map.keys().next().value; - if (oldest !== undefined) this.map.delete(oldest); + if (oldest !== undefined) {this.map.delete(oldest);} } } } diff --git a/packages/rate-limiter/src/stores/redis.ts b/packages/rate-limiter/src/stores/redis.ts index 9a2abbc..3553332 100644 --- a/packages/rate-limiter/src/stores/redis.ts +++ b/packages/rate-limiter/src/stores/redis.ts @@ -48,8 +48,8 @@ return 1 `; function parseEntry(raw: unknown): StoreEntry | null { - if (raw === null || raw === undefined) return null; - if (!Array.isArray(raw) || raw.length < 3) return null; + if (raw === null || raw === undefined) {return null;} + if (!Array.isArray(raw) || raw.length < 3) {return null;} return { value: Number(raw[0]), prev: Number(raw[1]), @@ -96,12 +96,22 @@ export class RedisStore implements RateLimiterStore { const next = updater(current); const isNew = current === null ? '1' : '0'; - const args = current === null - ? ['0', '0', '0', String(next.value), String(next.prev), String(next.windowStart), String(this.ttl), isNew] - : [String(current.value), String(current.prev), String(current.windowStart), String(next.value), String(next.prev), String(next.windowStart), String(this.ttl), isNew]; + const args = + current === null + ? ['0', '0', '0', String(next.value), String(next.prev), String(next.windowStart), String(this.ttl), isNew] + : [ + String(current.value), + String(current.prev), + String(current.windowStart), + String(next.value), + String(next.prev), + String(next.windowStart), + String(this.ttl), + isNew, + ]; const result = await this.client.eval(LUA_CAS, [fullKey], args); - if (Number(result) === 1) return next; + if (Number(result) === 1) {return next;} } throw new Error(`RedisStore CAS failed after ${this.maxRetries} retries (key: ${key})`); diff --git a/packages/rate-limiter/src/stores/with-fallback.ts b/packages/rate-limiter/src/stores/with-fallback.ts index 29f1175..5d9931a 100644 --- a/packages/rate-limiter/src/stores/with-fallback.ts +++ b/packages/rate-limiter/src/stores/with-fallback.ts @@ -75,10 +75,10 @@ export class WithFallbackStore implements RateLimiterStore { } private async tryRestore(): Promise { - if (this.usePrimary) return; + if (this.usePrimary) {return;} try { const healthy = await this.options.healthCheck(); - if (healthy) this.usePrimary = true; + if (healthy) {this.usePrimary = true;} } catch { // health check failed, stay on fallback } diff --git a/packages/rate-limiter/src/types.ts b/packages/rate-limiter/src/types.ts index 162ad1d..ab7bc58 100644 --- a/packages/rate-limiter/src/types.ts +++ b/packages/rate-limiter/src/types.ts @@ -1,5 +1,5 @@ -import type { RateLimitAllowResult, RateLimitDenyResult, RateLimitRule, RateLimiterHooks, RateLimiterStore } from './interfaces'; import type { Algorithm } from './enums'; +import type { RateLimitAllowResult, RateLimitDenyResult, RateLimitRule, RateLimiterHooks, RateLimiterStore } from './interfaces'; /** * Discriminated union returned by {@link RateLimiter.consume} and {@link RateLimiter.peek}. @@ -42,9 +42,4 @@ export type AlgorithmFn = ( * Signature for algorithm refund functions. * Used to undo a consume when compound rules encounter a TOCTOU race. */ -export type RefundFn = ( - key: string, - rule: RateLimitRule, - cost: number, - store: RateLimiterStore, -) => void | Promise; +export type RefundFn = (key: string, rule: RateLimitRule, cost: number, store: RateLimiterStore) => void | Promise; diff --git a/packages/rate-limiter/test/e2e/algorithm-consistency.test.ts b/packages/rate-limiter/test/e2e/algorithm-consistency.test.ts index 8d19efc..c0816dc 100644 --- a/packages/rate-limiter/test/e2e/algorithm-consistency.test.ts +++ b/packages/rate-limiter/test/e2e/algorithm-consistency.test.ts @@ -1,7 +1,7 @@ import { describe, test, expect } from 'bun:test'; -import { RateLimiter } from '../../src/rate-limiter'; import { RateLimitAction, Algorithm } from '../../src/enums'; +import { RateLimiter } from '../../src/rate-limiter'; import { createClock } from '../helpers'; describe('algorithm consistency', () => { @@ -33,7 +33,7 @@ describe('algorithm consistency', () => { clock: clock.now, }); - for (let i = 0; i < 8; i++) await limiter.consume('user1'); + for (let i = 0; i < 8; i++) {await limiter.consume('user1');} clock.advance(3000); @@ -78,7 +78,7 @@ describe('algorithm consistency', () => { clock: clock.now, }); - for (let i = 0; i < 5; i++) await limiter.consume('user1'); + for (let i = 0; i < 5; i++) {await limiter.consume('user1');} expect((await limiter.consume('user1')).action).toBe(RateLimitAction.Deny); // 2x window ensures even SlidingWindow's prev weight fully expires diff --git a/packages/rate-limiter/test/e2e/burst-recovery.test.ts b/packages/rate-limiter/test/e2e/burst-recovery.test.ts index 422f17f..02c2ab6 100644 --- a/packages/rate-limiter/test/e2e/burst-recovery.test.ts +++ b/packages/rate-limiter/test/e2e/burst-recovery.test.ts @@ -1,8 +1,9 @@ import { describe, test, expect } from 'bun:test'; -import { RateLimiter } from '../../src/rate-limiter'; -import { RateLimitAction, Algorithm } from '../../src/enums'; import type { RateLimitDenyResult } from '../../src/interfaces'; + +import { RateLimitAction, Algorithm } from '../../src/enums'; +import { RateLimiter } from '../../src/rate-limiter'; import { createClock } from '../helpers'; const algorithms = [Algorithm.GCRA, Algorithm.SlidingWindow, Algorithm.TokenBucket] as const; @@ -41,7 +42,7 @@ describe('burst → deny → cooldown → recovery', () => { clock: clock.now, }); - for (let i = 0; i < 10; i++) await limiter.consume('api-key'); + for (let i = 0; i < 10; i++) {await limiter.consume('api-key');} const denied = await limiter.consume('api-key'); const retryAfter = (denied as RateLimitDenyResult).retryAfter; @@ -65,7 +66,7 @@ describe('burst → deny → cooldown → recovery', () => { clock: clock.now, }); - for (let i = 0; i < 10; i++) await limiter.consume('api-key'); + for (let i = 0; i < 10; i++) {await limiter.consume('api-key');} // SlidingWindow needs 2x window for prev to fully expire // GCRA/TokenBucket recover fully within 1x window diff --git a/packages/rate-limiter/test/e2e/compound-timeline.test.ts b/packages/rate-limiter/test/e2e/compound-timeline.test.ts index 20bed2e..27fa95f 100644 --- a/packages/rate-limiter/test/e2e/compound-timeline.test.ts +++ b/packages/rate-limiter/test/e2e/compound-timeline.test.ts @@ -1,7 +1,7 @@ import { describe, test, expect } from 'bun:test'; -import { RateLimiter } from '../../src/rate-limiter'; import { RateLimitAction, Algorithm } from '../../src/enums'; +import { RateLimiter } from '../../src/rate-limiter'; import { createClock } from '../helpers'; describe('compound rules realistic timeline', () => { @@ -72,7 +72,7 @@ describe('compound rules realistic timeline', () => { // Keep consuming in bursts of 5 per second until global blocks for (let phase = 0; phase < 10; phase++) { - if (phase > 0) clock.advance(1000); + if (phase > 0) {clock.advance(1000);} for (let i = 0; i < 5; i++) { const r = await limiter.consume('user1'); if (r.action === RateLimitAction.Allow) { @@ -135,7 +135,7 @@ describe('compound rules realistic timeline', () => { let deniedCount = 0; for (let i = 0; i < 10; i++) { const r = await limiter.consume('user1'); - if (r.action === RateLimitAction.Deny) deniedCount++; + if (r.action === RateLimitAction.Deny) {deniedCount++;} } // Tight rule allows 5 (TAT recovers after 1001ms), then denies remaining 5 expect(deniedCount).toBe(5); diff --git a/packages/rate-limiter/test/e2e/multi-tenant.test.ts b/packages/rate-limiter/test/e2e/multi-tenant.test.ts index 28abc68..335b372 100644 --- a/packages/rate-limiter/test/e2e/multi-tenant.test.ts +++ b/packages/rate-limiter/test/e2e/multi-tenant.test.ts @@ -1,7 +1,7 @@ import { describe, test, expect } from 'bun:test'; -import { RateLimiter } from '../../src/rate-limiter'; import { RateLimitAction, Algorithm } from '../../src/enums'; +import { RateLimiter } from '../../src/rate-limiter'; import { createClock } from '../helpers'; describe('multi-tenant isolation', () => { diff --git a/packages/rate-limiter/test/e2e/redis-store.test.ts b/packages/rate-limiter/test/e2e/redis-store.test.ts index 3ebcd9d..f9396bb 100644 --- a/packages/rate-limiter/test/e2e/redis-store.test.ts +++ b/packages/rate-limiter/test/e2e/redis-store.test.ts @@ -1,17 +1,17 @@ import { describe, test, expect, beforeAll, afterAll, beforeEach } from 'bun:test'; import Redis from 'ioredis'; -import { RateLimiter } from '../../src/rate-limiter'; +import type { RedisClient } from '../../src/stores/redis'; + import { RateLimitAction, Algorithm } from '../../src/enums'; +import { RateLimiter } from '../../src/rate-limiter'; import { RedisStore } from '../../src/stores/redis'; -import type { RedisClient } from '../../src/stores/redis'; // ── ioredis adapter ──────────────────────────────────────────────── function createRedisClient(redis: Redis): RedisClient { return { - eval: (script: string, keys: string[], args: string[]) => - redis.eval(script, keys.length, ...keys, ...args), + eval: (script: string, keys: string[], args: string[]) => redis.eval(script, keys.length, ...keys, ...args), }; } @@ -33,9 +33,9 @@ afterAll(async () => { beforeEach(async () => { // Clean all test keys const keys = await redis.keys('rl:*'); - if (keys.length > 0) await redis.del(...keys); + if (keys.length > 0) {await redis.del(...keys);} const testKeys = await redis.keys('test:*'); - if (testKeys.length > 0) await redis.del(...testKeys); + if (testKeys.length > 0) {await redis.del(...testKeys);} }); // ── RedisStore direct tests ──────────────────────────────────────── @@ -44,7 +44,7 @@ describe('RedisStore with real Redis', () => { test('update creates and retrieves entry', async () => { const store = new RedisStore({ client }); - const entry = await store.update('key1', (current) => { + const entry = await store.update('key1', current => { expect(current).toBeNull(); return { value: 42, prev: 0, windowStart: 1000 }; }); @@ -60,7 +60,7 @@ describe('RedisStore with real Redis', () => { await store.update('key1', () => ({ value: 10, prev: 5, windowStart: 2000 })); - const entry = await store.update('key1', (current) => { + const entry = await store.update('key1', current => { expect(current).toEqual({ value: 10, prev: 5, windowStart: 2000 }); return { value: 20, prev: 10, windowStart: 3000 }; }); diff --git a/packages/rate-limiter/test/e2e/variable-cost.test.ts b/packages/rate-limiter/test/e2e/variable-cost.test.ts index 6266379..a307253 100644 --- a/packages/rate-limiter/test/e2e/variable-cost.test.ts +++ b/packages/rate-limiter/test/e2e/variable-cost.test.ts @@ -1,7 +1,7 @@ import { describe, test, expect } from 'bun:test'; -import { RateLimiter } from '../../src/rate-limiter'; import { RateLimitAction, Algorithm } from '../../src/enums'; +import { RateLimiter } from '../../src/rate-limiter'; import { createClock } from '../helpers'; describe('variable cost patterns', () => { diff --git a/packages/rate-limiter/test/helpers.ts b/packages/rate-limiter/test/helpers.ts index 7d18b57..45c3f52 100644 --- a/packages/rate-limiter/test/helpers.ts +++ b/packages/rate-limiter/test/helpers.ts @@ -1,12 +1,17 @@ -import { MemoryStore } from '../src/stores/memory'; import type { RateLimiterStore, StoreEntry } from '../src/interfaces'; +import { MemoryStore } from '../src/stores/memory'; + export function createClock(start = 0) { let now = start; return { now: () => now, - advance: (ms: number) => { now += ms; }, - set: (ms: number) => { now = ms; }, + advance: (ms: number) => { + now += ms; + }, + set: (ms: number) => { + now = ms; + }, }; } diff --git a/packages/rate-limiter/test/integration/algorithm-store-matrix.test.ts b/packages/rate-limiter/test/integration/algorithm-store-matrix.test.ts index e8a3aa3..aa2d0b6 100644 --- a/packages/rate-limiter/test/integration/algorithm-store-matrix.test.ts +++ b/packages/rate-limiter/test/integration/algorithm-store-matrix.test.ts @@ -1,7 +1,7 @@ import { describe, test, expect } from 'bun:test'; -import { RateLimiter } from '../../src/rate-limiter'; import { RateLimitAction, Algorithm } from '../../src/enums'; +import { RateLimiter } from '../../src/rate-limiter'; import { MemoryStore } from '../../src/stores/memory'; import { createClock, createAsyncStore } from '../helpers'; diff --git a/packages/rate-limiter/test/integration/fallback-continuity.test.ts b/packages/rate-limiter/test/integration/fallback-continuity.test.ts index dfec51e..7fd1bb5 100644 --- a/packages/rate-limiter/test/integration/fallback-continuity.test.ts +++ b/packages/rate-limiter/test/integration/fallback-continuity.test.ts @@ -1,7 +1,7 @@ import { describe, test, expect, afterEach } from 'bun:test'; -import { RateLimiter } from '../../src/rate-limiter'; import { RateLimitAction, Algorithm } from '../../src/enums'; +import { RateLimiter } from '../../src/rate-limiter'; import { MemoryStore } from '../../src/stores/memory'; import { withFallback, WithFallbackStore } from '../../src/stores/with-fallback'; import { createClock } from '../helpers'; @@ -9,7 +9,9 @@ import { createClock } from '../helpers'; describe('WithFallback store continuity', () => { let store: WithFallbackStore; - afterEach(() => { store?.dispose(); }); + afterEach(() => { + store?.dispose(); + }); test('fallback starts fresh after primary failure — counter resets', async () => { const clock = createClock(1000); @@ -20,15 +22,15 @@ describe('WithFallback store continuity', () => { store = withFallback( { update: (key, updater) => { - if (primaryDown) throw new Error('down'); + if (primaryDown) {throw new Error('down');} return primary.update(key, updater); }, - get: (key) => { - if (primaryDown) throw new Error('down'); + get: key => { + if (primaryDown) {throw new Error('down');} return primary.get(key); }, - delete: (key) => { - if (primaryDown) throw new Error('down'); + delete: key => { + if (primaryDown) {throw new Error('down');} return primary.delete(key); }, clear: () => primary.clear(), @@ -72,15 +74,15 @@ describe('WithFallback store continuity', () => { store = withFallback( { update: (key, updater) => { - if (primaryDown) throw new Error('down'); + if (primaryDown) {throw new Error('down');} return primary.update(key, updater); }, - get: (key) => { - if (primaryDown) throw new Error('down'); + get: key => { + if (primaryDown) {throw new Error('down');} return primary.get(key); }, - delete: (key) => { - if (primaryDown) throw new Error('down'); + delete: key => { + if (primaryDown) {throw new Error('down');} return primary.delete(key); }, clear: () => primary.clear(), diff --git a/packages/rate-limiter/test/integration/hooks-flow.test.ts b/packages/rate-limiter/test/integration/hooks-flow.test.ts index 7a9a913..b883436 100644 --- a/packages/rate-limiter/test/integration/hooks-flow.test.ts +++ b/packages/rate-limiter/test/integration/hooks-flow.test.ts @@ -1,8 +1,9 @@ import { describe, test, expect } from 'bun:test'; -import { RateLimiter } from '../../src/rate-limiter'; -import { RateLimitAction, Algorithm } from '../../src/enums'; import type { RateLimitAllowResult, RateLimitDenyResult } from '../../src/interfaces'; + +import { RateLimitAction, Algorithm } from '../../src/enums'; +import { RateLimiter } from '../../src/rate-limiter'; import { createClock } from '../helpers'; describe('hooks in compound rules flow', () => { @@ -66,8 +67,8 @@ describe('hooks in compound rules flow', () => { algorithm: Algorithm.SlidingWindow, clock: clock.now, hooks: { - onConsume: (key) => events.push({ type: 'consume', key }), - onLimit: (key) => events.push({ type: 'limit', key }), + onConsume: key => events.push({ type: 'consume', key }), + onLimit: key => events.push({ type: 'limit', key }), }, }); @@ -97,8 +98,12 @@ describe('hooks in compound rules flow', () => { algorithm: Algorithm.SlidingWindow, clock: clock.now, hooks: { - onConsume: () => { hookCalled = true; }, - onLimit: () => { hookCalled = true; }, + onConsume: () => { + hookCalled = true; + }, + onLimit: () => { + hookCalled = true; + }, }, }); diff --git a/packages/result/CHANGELOG.md b/packages/result/CHANGELOG.md index ae0fd3b..e0fb9be 100644 --- a/packages/result/CHANGELOG.md +++ b/packages/result/CHANGELOG.md @@ -25,7 +25,6 @@ ### Patch Changes - 665e37c: chore: quality audit across all public packages - - Add `sideEffects: false` and `publishConfig.provenance` to all packages - Add `.npmignore` to all packages - Expand npm keywords for better discoverability @@ -71,7 +70,6 @@ ### Minor Changes - 08bfee5: Add `safe()` function and `ResultAsync` type - - `safe(fn)` / `safe(fn, mapErr)`: wraps sync functions, catches throws into `Err` - `safe(promise)` / `safe(promise, mapErr)`: wraps Promises, catches rejections into `Err` - `ResultAsync`: type alias for `Promise>` diff --git a/packages/result/README.ko.md b/packages/result/README.ko.md index b46530c..47b88bb 100644 --- a/packages/result/README.ko.md +++ b/packages/result/README.ko.md @@ -27,8 +27,8 @@ bun add @zipbul/result ```typescript // ❌ Throw — 호출자는 뭐가 올지 전혀 모릅니다 function parseConfig(raw: string): Config { - if (!raw) throw new Error('empty input'); // 타입이 뭔가요? 알 수 없음. - if (!valid(raw)) throw new ValidationError(); // 조용히 상위로 전파됨. + if (!raw) throw new Error('empty input'); // 타입이 뭔가요? 알 수 없음. + if (!valid(raw)) throw new ValidationError(); // 조용히 상위로 전파됨. return JSON.parse(raw); } @@ -55,7 +55,7 @@ const result = parseConfig(input); if (isErr(result)) { console.error(result.data); // string — TypeScript가 타입을 압니다 } else { - console.log(result.host); // Config — 완전히 좁혀짐 + console.log(result.host); // Config — 완전히 좁혀짐 } ``` @@ -103,10 +103,10 @@ if (isErr(result)) { import { err } from '@zipbul/result'; ``` -| 오버로드 | 반환 | 설명 | -|:---------|:-----|:-----| -| `err()` | `Err` | 데이터 없는 에러 | -| `err(data: E)` | `Err` | 데이터가 첨부된 에러 | +| 오버로드 | 반환 | 설명 | +| :---------------- | :----------- | :------------------- | +| `err()` | `Err` | 데이터 없는 에러 | +| `err(data: E)` | `Err` | 데이터가 첨부된 에러 | ```typescript // 데이터 없음 — 단순 신호 @@ -124,9 +124,9 @@ const e3 = err({ code: 'TIMEOUT', retryAfter: 3000 }); 반환된 `Err`의 프로퍼티: -| 프로퍼티 | 타입 | 설명 | -|:---------|:-----|:-----| -| `data` | `E` | 첨부된 에러 데이터 | +| 프로퍼티 | 타입 | 설명 | +| :------- | :--- | :----------------- | +| `data` | `E` | 첨부된 에러 데이터 | > **불변성** — 모든 `Err`는 `Object.freeze()`됩니다. strict mode에서 프로퍼티를 수정하면 `TypeError`가 발생합니다. @@ -141,7 +141,7 @@ import { isErr } from '@zipbul/result'; ``` ```typescript -function isErr(value: unknown): value is Err +function isErr(value: unknown): value is Err; ``` - `value`가 null이 아닌 객체이고, 마커 프로퍼티가 `true`인 경우에만 `true`를 반환합니다. @@ -171,10 +171,10 @@ if (isErr(result)) { type Result = T | Err; ``` -| 파라미터 | 기본값 | 설명 | -|:---------|:-------|:-----| -| `T` | — | 성공 값 타입 | -| `E` | `never` | 에러 데이터 타입 | +| 파라미터 | 기본값 | 설명 | +| :------- | :------ | :--------------- | +| `T` | — | 성공 값 타입 | +| `E` | `never` | 에러 데이터 타입 | ```typescript // 단순 — 에러 데이터 없음 @@ -211,12 +211,12 @@ type Err = { import { safe } from '@zipbul/result'; ``` -| 오버로드 | 반환 | 설명 | -|:---------|:-----|:-----| -| `safe(fn)` | `Result` | 동기 — `fn()` 호출, throw 캐치 | -| `safe(fn, mapErr)` | `Result` | 동기 — throw 캐치, `mapErr`로 변환 | -| `safe(promise)` | `ResultAsync` | 비동기 — rejection 래핑 | -| `safe(promise, mapErr)` | `ResultAsync` | 비동기 — rejection 래핑, `mapErr`로 변환 | +| 오버로드 | 반환 | 설명 | +| :---------------------- | :------------------------ | :--------------------------------------- | +| `safe(fn)` | `Result` | 동기 — `fn()` 호출, throw 캐치 | +| `safe(fn, mapErr)` | `Result` | 동기 — throw 캐치, `mapErr`로 변환 | +| `safe(promise)` | `ResultAsync` | 비동기 — rejection 래핑 | +| `safe(promise, mapErr)` | `ResultAsync` | 비동기 — rejection 래핑, `mapErr`로 변환 | ```typescript // 동기 — throw할 수 있는 함수 래핑 @@ -230,17 +230,14 @@ if (isErr(result)) { // 동기 + mapErr — unknown throw를 타입이 있는 에러로 변환 const typed = safe( () => JSON.parse(rawJson), - (e) => ({ code: 'PARSE_ERROR', message: String(e) }), + e => ({ code: 'PARSE_ERROR', message: String(e) }), ); // 비동기 — reject될 수 있는 Promise 래핑 const asyncResult = await safe(fetch('/api/data')); // 비동기 + mapErr -const apiResult = await safe( - fetch('/api/users/1'), - (e) => ({ code: 'NETWORK', message: String(e) }), -); +const apiResult = await safe(fetch('/api/users/1'), e => ({ code: 'NETWORK', message: String(e) })); ``` > **동기 경로** — `safe(fn)`은 `!(fn instanceof Promise)`로 함수를 감지합니다. Promise를 _반환하는_ 함수는 동기로 처리되며, Promise 객체가 성공값 `T`가 됩니다. @@ -257,10 +254,10 @@ const apiResult = await safe( type ResultAsync = Promise>; ``` -| 파라미터 | 기본값 | 설명 | -|:---------|:-------|:-----| -| `T` | — | 성공 값 타입 | -| `E` | `never` | 에러 데이터 타입 | +| 파라미터 | 기본값 | 설명 | +| :------- | :------ | :--------------- | +| `T` | — | 성공 값 타입 | +| `E` | `never` | 에러 데이터 타입 | ```typescript // 비동기 Result 반환 함수의 반환 타입으로 사용 @@ -271,10 +268,7 @@ async function fetchUser(id: number): ResultAsync { } // 또는 기존 Promise를 safe()로 래핑 -const result: ResultAsync = safe( - fetch('/api/data'), - (e) => String(e), -); +const result: ResultAsync = safe(fetch('/api/data'), e => String(e)); ```
@@ -287,11 +281,11 @@ const result: ResultAsync = safe( import { DEFAULT_MARKER_KEY, getMarkerKey, setMarkerKey } from '@zipbul/result'; ``` -| 내보내기 | 타입 | 설명 | -|:---------|:-----|:-----| -| `DEFAULT_MARKER_KEY` | `string` | `'__$$e_9f4a1c7b__'` — 기본 키 | -| `getMarkerKey()` | `() => string` | 현재 마커 키 반환 | -| `setMarkerKey(key)` | `(key: string) => void` | 마커 키 변경 | +| 내보내기 | 타입 | 설명 | +| :------------------- | :---------------------- | :----------------------------- | +| `DEFAULT_MARKER_KEY` | `string` | `'__$$e_9f4a1c7b__'` — 기본 키 | +| `getMarkerKey()` | `() => string` | 현재 마커 키 반환 | +| `setMarkerKey(key)` | `(key: string) => void` | 마커 키 변경 | ```typescript // 독립 모듈 간 감지 리셋 @@ -392,10 +386,7 @@ Bun.serve({ const body = await parseBody(request); if (isErr(body)) { - return Response.json( - { error: body.data.code, message: body.data.message }, - { status: 400 }, - ); + return Response.json({ error: body.data.code, message: body.data.message }, { status: 400 }); } // body는 Payload diff --git a/packages/result/README.md b/packages/result/README.md index 3a31949..099a5bd 100644 --- a/packages/result/README.md +++ b/packages/result/README.md @@ -27,8 +27,8 @@ Traditional error handling with `throw` breaks control flow, loses type informat ```typescript // ❌ Throw — caller has no idea what to expect function parseConfig(raw: string): Config { - if (!raw) throw new Error('empty input'); // What type? Unknown. - if (!valid(raw)) throw new ValidationError(); // Silently propagates up. + if (!raw) throw new Error('empty input'); // What type? Unknown. + if (!valid(raw)) throw new ValidationError(); // Silently propagates up. return JSON.parse(raw); } @@ -55,7 +55,7 @@ const result = parseConfig(input); if (isErr(result)) { console.error(result.data); // string — TypeScript knows the type } else { - console.log(result.host); // Config — fully narrowed + console.log(result.host); // Config — fully narrowed } ``` @@ -103,10 +103,10 @@ Creates an immutable `Err` value. Never throws. import { err } from '@zipbul/result'; ``` -| Overload | Return | Description | -|:---------|:-------|:------------| -| `err()` | `Err` | Error with no data | -| `err(data: E)` | `Err` | Error with attached data | +| Overload | Return | Description | +| :---------------- | :----------- | :----------------------- | +| `err()` | `Err` | Error with no data | +| `err(data: E)` | `Err` | Error with attached data | ```typescript // No data — simple signal @@ -124,9 +124,9 @@ const e3 = err({ code: 'TIMEOUT', retryAfter: 3000 }); Properties of the returned `Err`: -| Property | Type | Description | -|:---------|:-----|:------------| -| `data` | `E` | The attached error data | +| Property | Type | Description | +| :------- | :--- | :---------------------- | +| `data` | `E` | The attached error data | > **Immutability** — every `Err` is `Object.freeze()`d. Attempting to modify properties in strict mode throws a `TypeError`. @@ -141,7 +141,7 @@ import { isErr } from '@zipbul/result'; ``` ```typescript -function isErr(value: unknown): value is Err +function isErr(value: unknown): value is Err; ``` - Returns `true` if `value` is a non-null object with the marker property set to `true`. @@ -171,10 +171,10 @@ A plain union type — not a wrapper class. type Result = T | Err; ``` -| Parameter | Default | Description | -|:----------|:--------|:------------| -| `T` | — | Success value type | -| `E` | `never` | Error data type | +| Parameter | Default | Description | +| :-------- | :------ | :----------------- | +| `T` | — | Success value type | +| `E` | `never` | Error data type | ```typescript // Simple — no error data @@ -211,12 +211,12 @@ Wraps a sync function or Promise into a `Result` / `ResultAsync`. Catches throws import { safe } from '@zipbul/result'; ``` -| Overload | Return | Description | -|:---------|:-------|:------------| -| `safe(fn)` | `Result` | Sync — calls `fn()`, catches throws | -| `safe(fn, mapErr)` | `Result` | Sync — catches throws, maps via `mapErr` | -| `safe(promise)` | `ResultAsync` | Async — wraps rejection | -| `safe(promise, mapErr)` | `ResultAsync` | Async — wraps rejection, maps via `mapErr` | +| Overload | Return | Description | +| :---------------------- | :------------------------ | :----------------------------------------- | +| `safe(fn)` | `Result` | Sync — calls `fn()`, catches throws | +| `safe(fn, mapErr)` | `Result` | Sync — catches throws, maps via `mapErr` | +| `safe(promise)` | `ResultAsync` | Async — wraps rejection | +| `safe(promise, mapErr)` | `ResultAsync` | Async — wraps rejection, maps via `mapErr` | ```typescript // Sync — wrap a function that might throw @@ -230,17 +230,14 @@ if (isErr(result)) { // Sync with mapErr — convert unknown throw to typed error const typed = safe( () => JSON.parse(rawJson), - (e) => ({ code: 'PARSE_ERROR', message: String(e) }), + e => ({ code: 'PARSE_ERROR', message: String(e) }), ); // Async — wrap a Promise that might reject const asyncResult = await safe(fetch('/api/data')); // Async with mapErr -const apiResult = await safe( - fetch('/api/users/1'), - (e) => ({ code: 'NETWORK', message: String(e) }), -); +const apiResult = await safe(fetch('/api/users/1'), e => ({ code: 'NETWORK', message: String(e) })); ``` > **Sync path** — `safe(fn)` detects a function via `!(fn instanceof Promise)`. A function that _returns_ a Promise is treated as sync — the Promise object becomes the success value `T`. @@ -257,10 +254,10 @@ A type alias for async results — not a wrapper class. type ResultAsync = Promise>; ``` -| Parameter | Default | Description | -|:----------|:--------|:------------| -| `T` | — | Success value type | -| `E` | `never` | Error data type | +| Parameter | Default | Description | +| :-------- | :------ | :----------------- | +| `T` | — | Success value type | +| `E` | `never` | Error data type | ```typescript // Use as return type for async Result-returning functions @@ -271,10 +268,7 @@ async function fetchUser(id: number): ResultAsync { } // Or wrap an existing Promise with safe() -const result: ResultAsync = safe( - fetch('/api/data'), - (e) => String(e), -); +const result: ResultAsync = safe(fetch('/api/data'), e => String(e)); ```
@@ -287,11 +281,11 @@ The marker key is a unique hidden property used to identify `Err` objects. It de import { DEFAULT_MARKER_KEY, getMarkerKey, setMarkerKey } from '@zipbul/result'; ``` -| Export | Type | Description | -|:-------|:-----|:------------| -| `DEFAULT_MARKER_KEY` | `string` | `'__$$e_9f4a1c7b__'` — the default key | -| `getMarkerKey()` | `() => string` | Returns the current marker key | -| `setMarkerKey(key)` | `(key: string) => void` | Changes the marker key | +| Export | Type | Description | +| :------------------- | :---------------------- | :------------------------------------- | +| `DEFAULT_MARKER_KEY` | `string` | `'__$$e_9f4a1c7b__'` — the default key | +| `getMarkerKey()` | `() => string` | Returns the current marker key | +| `setMarkerKey(key)` | `(key: string) => void` | Changes the marker key | ```typescript // Reset detection across independent modules @@ -392,10 +386,7 @@ Bun.serve({ const body = await parseBody(request); if (isErr(body)) { - return Response.json( - { error: body.data.code, message: body.data.message }, - { status: 400 }, - ); + return Response.json({ error: body.data.code, message: body.data.message }, { status: 400 }); } // body is Payload diff --git a/packages/result/bunfig.toml b/packages/result/bunfig.toml index 513aff1..5432b2f 100644 --- a/packages/result/bunfig.toml +++ b/packages/result/bunfig.toml @@ -3,10 +3,7 @@ onlyFailures = true coverage = true coverageReporter = ["text", "lcov"] coverageThreshold = 0.95 -coveragePathIgnorePatterns = [ - "node_modules/**", - "dist/**" -] +coveragePathIgnorePatterns = ["node_modules/**", "dist/**"] [test.reporter] -dots = true \ No newline at end of file +dots = true diff --git a/packages/result/package.json b/packages/result/package.json index 968cf88..6cf0278 100644 --- a/packages/result/package.json +++ b/packages/result/package.json @@ -2,31 +2,32 @@ "name": "@zipbul/result", "version": "1.0.0", "description": "Lightweight Result type for error handling without exceptions", - "license": "MIT", - "author": "Junhyung Park (https://github.com/parkrevil)", - "repository": { - "type": "git", - "url": "https://github.com/zipbul/toolkit", - "directory": "packages/result" - }, - "bugs": "https://github.com/zipbul/toolkit/issues", - "homepage": "https://github.com/zipbul/toolkit/tree/main/packages/result#readme", "keywords": [ - "result", - "result-type", - "error-handling", - "error", + "bun", "either", + "error", + "error-handling", "functional", "no-exceptions", - "bun", + "result", + "result-type", "typescript", "zipbul" ], - "engines": { - "bun": ">=1.0.0" + "homepage": "https://github.com/zipbul/toolkit/tree/main/packages/result#readme", + "bugs": "https://github.com/zipbul/toolkit/issues", + "license": "MIT", + "author": "Junhyung Park (https://github.com/parkrevil)", + "repository": { + "type": "git", + "url": "https://github.com/zipbul/toolkit", + "directory": "packages/result" }, + "files": [ + "dist" + ], "type": "module", + "sideEffects": false, "module": "dist/index.js", "types": "dist/index.d.ts", "exports": { @@ -35,17 +36,16 @@ "import": "./dist/index.js" } }, - "files": [ - "dist" - ], - "sideEffects": false, "publishConfig": { "provenance": true }, "scripts": { "build": "bun build index.ts --outdir dist --target bun --format esm --production && tsc -p tsconfig.build.json", - "typecheck": "tsc --noEmit", + "coverage": "bun test --coverage", "test": "bun test", - "coverage": "bun test --coverage" + "typecheck": "tsc --noEmit" + }, + "engines": { + "bun": ">=1.0.0" } } diff --git a/packages/result/src/constants.spec.ts b/packages/result/src/constants.spec.ts index eab6166..3f9bba3 100644 --- a/packages/result/src/constants.spec.ts +++ b/packages/result/src/constants.spec.ts @@ -72,7 +72,9 @@ describe('constants', () => { // Arrange setMarkerKey('__custom__'); // Act - try { setMarkerKey(''); } catch {} + try { + setMarkerKey(''); + } catch {} // Assert expect(getMarkerKey()).toBe('__custom__'); }); diff --git a/packages/result/src/err.spec.ts b/packages/result/src/err.spec.ts index 3a44bd6..ec37bef 100644 --- a/packages/result/src/err.spec.ts +++ b/packages/result/src/err.spec.ts @@ -36,16 +36,22 @@ describe('err', () => { // Assert expect(result.data).toBe(42); }); - }); describe('no-throw guarantee', () => { it('should not throw when data is a hostile Proxy', () => { // Arrange - const hostileProxy = new Proxy({}, { - get() { throw new Error('proxy trap'); }, - has() { throw new Error('proxy trap'); }, - }); + const hostileProxy = new Proxy( + {}, + { + get() { + throw new Error('proxy trap'); + }, + has() { + throw new Error('proxy trap'); + }, + }, + ); // Act / Assert expect(() => err(hostileProxy)).not.toThrow(); const result = err(hostileProxy); @@ -179,9 +185,7 @@ describe('err', () => { const r2 = err({ code: 'A' }); // Assert expect(r1.data).toEqual(r2.data); - expect((r1 as Record)[getMarkerKey()]).toBe( - (r2 as Record)[getMarkerKey()], - ); + expect((r1 as Record)[getMarkerKey()]).toBe((r2 as Record)[getMarkerKey()]); }); it('should return different references for same arguments', () => { diff --git a/packages/result/src/err.ts b/packages/result/src/err.ts index ce256d9..8b68d41 100644 --- a/packages/result/src/err.ts +++ b/packages/result/src/err.ts @@ -1,4 +1,5 @@ import type { Err } from './types'; + import { getMarkerKey } from './constants'; /** diff --git a/packages/result/src/is-err.spec.ts b/packages/result/src/is-err.spec.ts index 2bbbb3b..80fb560 100644 --- a/packages/result/src/is-err.spec.ts +++ b/packages/result/src/is-err.spec.ts @@ -1,6 +1,6 @@ import { afterEach, describe, expect, it } from 'bun:test'; -import { DEFAULT_MARKER_KEY, getMarkerKey, setMarkerKey } from './constants'; +import { DEFAULT_MARKER_KEY, setMarkerKey } from './constants'; import { err } from './err'; import { isErr } from './is-err'; @@ -142,10 +142,17 @@ describe('isErr', () => { describe('corner cases', () => { it('should return false for Proxy that throws on property access', () => { // Arrange - const hostileProxy = new Proxy({}, { - get() { throw new Error('proxy trap'); }, - has() { throw new Error('proxy trap'); }, - }); + const hostileProxy = new Proxy( + {}, + { + get() { + throw new Error('proxy trap'); + }, + has() { + throw new Error('proxy trap'); + }, + }, + ); // Act / Assert expect(() => isErr(hostileProxy)).not.toThrow(); expect(isErr(hostileProxy)).toBe(false); diff --git a/packages/result/src/is-err.ts b/packages/result/src/is-err.ts index 7b334cf..adc934c 100644 --- a/packages/result/src/is-err.ts +++ b/packages/result/src/is-err.ts @@ -1,4 +1,5 @@ import type { Err } from './types'; + import { getMarkerKey } from './constants'; /** @@ -27,9 +28,7 @@ import { getMarkerKey } from './constants'; * } * ``` */ -export function isErr( - value: unknown, -): value is Err { +export function isErr(value: unknown): value is Err { try { return ( value !== null && diff --git a/packages/result/src/safe.spec.ts b/packages/result/src/safe.spec.ts index 7ac061e..83bff6c 100644 --- a/packages/result/src/safe.spec.ts +++ b/packages/result/src/safe.spec.ts @@ -67,7 +67,9 @@ describe('safe', () => { describe('sync error without mapErr', () => { it('should return Err when sync fn throws Error', () => { // Arrange - const fn = () => { throw new Error('boom'); }; + const fn = () => { + throw new Error('boom'); + }; // Act const result = safe(fn); // Assert @@ -80,7 +82,9 @@ describe('safe', () => { it('should return Err when sync fn throws string', () => { // Arrange - const fn = () => { throw 'string error'; }; + const fn = () => { + throw 'string error'; + }; // Act const result = safe(fn); // Assert @@ -92,7 +96,9 @@ describe('safe', () => { it('should return Err wrapping null when sync fn throws null', () => { // Arrange - const fn = () => { throw null; }; + const fn = () => { + throw null; + }; // Act const result = safe(fn); // Assert @@ -105,7 +111,9 @@ describe('safe', () => { it('should return Err wrapping undefined when sync fn throws undefined', () => { // Arrange // eslint-disable-next-line no-throw-literal - const fn = () => { throw undefined; }; + const fn = () => { + throw undefined; + }; // Act const result = safe(fn); // Assert @@ -119,7 +127,9 @@ describe('safe', () => { describe('sync error with mapErr', () => { it('should return mapped Err when sync fn throws with mapErr', () => { // Arrange - const fn = () => { throw new Error('fail'); }; + const fn = () => { + throw new Error('fail'); + }; const mapErr = (e: unknown) => (e as Error).message; // Act const result = safe(fn, mapErr); @@ -133,9 +143,14 @@ describe('safe', () => { it('should pass exact thrown reference to sync mapErr', () => { // Arrange const thrownObj = { code: 'X' }; - const fn = () => { throw thrownObj; }; + const fn = () => { + throw thrownObj; + }; let received: unknown; - const mapErr = (e: unknown) => { received = e; return 'mapped'; }; + const mapErr = (e: unknown) => { + received = e; + return 'mapped'; + }; // Act safe(fn, mapErr); // Assert @@ -201,7 +216,10 @@ describe('safe', () => { const rejectedObj = { code: 'Y' }; const promise = Promise.reject(rejectedObj); let received: unknown; - const mapErr = (e: unknown) => { received = e; return 'mapped'; }; + const mapErr = (e: unknown) => { + received = e; + return 'mapped'; + }; // Act await safe(promise, mapErr); // Assert @@ -253,8 +271,12 @@ describe('safe', () => { describe('corner cases', () => { it('should propagate when sync mapErr throws', () => { // Arrange - const fn = () => { throw new Error('original'); }; - const mapErr = () => { throw new Error('mapErr panic'); }; + const fn = () => { + throw new Error('original'); + }; + const mapErr = () => { + throw new Error('mapErr panic'); + }; // Act / Assert — mapErr throw is NOT caught by safe expect(() => safe(fn, mapErr)).toThrow('mapErr panic'); }); @@ -262,14 +284,18 @@ describe('safe', () => { it('should reject when async mapErr throws', async () => { // Arrange const promise = Promise.reject(new Error('original')); - const mapErr = () => { throw new Error('async mapErr panic'); }; + const mapErr = () => { + throw new Error('async mapErr panic'); + }; // Act / Assert — the returned promise rejects with mapErr's error await expect(safe(promise, mapErr)).rejects.toThrow('async mapErr panic'); }); it('should return Err with undefined data when mapErr returns undefined', () => { // Arrange - const fn = () => { throw new Error('fail'); }; + const fn = () => { + throw new Error('fail'); + }; const mapErr = () => undefined; // Act const result = safe(fn, mapErr); diff --git a/packages/result/src/safe.ts b/packages/result/src/safe.ts index 2465418..302bca5 100644 --- a/packages/result/src/safe.ts +++ b/packages/result/src/safe.ts @@ -1,4 +1,5 @@ import type { Result, ResultAsync } from './types'; + import { err } from './err'; /** @@ -79,7 +80,7 @@ export function safe( ): Result | ResultAsync { if (fnOrPromise instanceof Promise) { return fnOrPromise.then( - (value) => value as Result, + value => value as Result, (thrown: unknown) => (mapErr ? err(mapErr(thrown)) : err(thrown)) as Result, ); } diff --git a/packages/result/test/result.test.ts b/packages/result/test/result.test.ts index 86202af..ebda684 100644 --- a/packages/result/test/result.test.ts +++ b/packages/result/test/result.test.ts @@ -1,8 +1,9 @@ import { afterEach, describe, expect, it } from 'bun:test'; -import { DEFAULT_MARKER_KEY, err, isErr, safe, setMarkerKey } from '../index'; import type { Result, ResultAsync } from '../index'; +import { DEFAULT_MARKER_KEY, err, isErr, safe, setMarkerKey } from '../index'; + describe('result', () => { afterEach(() => { setMarkerKey(DEFAULT_MARKER_KEY); @@ -43,7 +44,7 @@ describe('result', () => { it('should work with Result function pattern: success case', () => { // Arrange function findItem(id: string): Result<{ id: string }, { code: string }> { - if (!id) return err({ code: 'INVALID' }); + if (!id) {return err({ code: 'INVALID' });} return { id }; } // Act @@ -58,7 +59,7 @@ describe('result', () => { it('should work with Result function pattern: error case', () => { // Arrange function findItem(id: string): Result<{ id: string }, { code: string }> { - if (!id) return err({ code: 'INVALID' }); + if (!id) {return err({ code: 'INVALID' });} return { id }; } // Act @@ -145,7 +146,7 @@ describe('result', () => { it('should work with generic Result function', () => { // Arrange function safeDivide(a: number, b: number): Result { - if (b === 0) return err('division by zero'); + if (b === 0) {return err('division by zero');} return a / b; } // Act @@ -209,10 +210,7 @@ describe('result', () => { it('should produce ResultAsync narrowable by isErr when promise rejects with mapErr', async () => { // Arrange - const resultAsync: ResultAsync = safe( - Promise.reject(new Error('async fail')), - (e) => (e as Error).message, - ); + const resultAsync: ResultAsync = safe(Promise.reject(new Error('async fail')), e => (e as Error).message); const result = await resultAsync; // Act / Assert expect(isErr(result)).toBe(true); diff --git a/packages/router/.gitignore b/packages/router/.gitignore new file mode 100644 index 0000000..6f24d90 --- /dev/null +++ b/packages/router/.gitignore @@ -0,0 +1,5 @@ +.claude/scheduled_tasks.lock + +# Stryker mutation testing (local-only; see `bun run test:mutation`) +reports/ +.stryker-tmp/ diff --git a/packages/router/.npmignore b/packages/router/.npmignore index 6544567..1c55bd6 100644 --- a/packages/router/.npmignore +++ b/packages/router/.npmignore @@ -9,7 +9,6 @@ test/ # Config tsconfig.json -tsconfig.build.json bunfig.toml # Dev diff --git a/packages/router/.oxfmtrc.jsonc b/packages/router/.oxfmtrc.jsonc new file mode 100644 index 0000000..f3b7506 --- /dev/null +++ b/packages/router/.oxfmtrc.jsonc @@ -0,0 +1,43 @@ +{ + "$schema": "./node_modules/oxfmt/configuration_schema.json", + + // Prettier-compatible core options + "printWidth": 130, + "tabWidth": 2, + "useTabs": false, + "semi": true, + "singleQuote": true, + "jsxSingleQuote": false, + "quoteProps": "as-needed", + "trailingComma": "all", + "bracketSpacing": true, + "bracketSameLine": false, + "arrowParens": "avoid", + "proseWrap": "preserve", + "embeddedLanguageFormatting": "auto", + "endOfLine": "lf", + "insertFinalNewline": true, + "ignorePatterns": [], + "experimentalSortPackageJson": { + "sortScripts": true, + }, + "experimentalSortImports": { + "customGroups": [], + "groups": [ + "type-import", + ["value-builtin", "value-external"], + "type-internal", + "value-internal", + ["type-parent", "type-sibling", "type-index"], + ["value-parent", "value-sibling", "value-index"], + "unknown", + ], + "ignoreCase": true, + "internalPattern": ["~/", "@/"], + "newlinesBetween": true, + "order": "asc", + "partitionByComment": false, + "partitionByNewline": false, + "sortSideEffects": false, + }, +} diff --git a/packages/router/.oxlintrc.jsonc b/packages/router/.oxlintrc.jsonc new file mode 100644 index 0000000..cbb16ee --- /dev/null +++ b/packages/router/.oxlintrc.jsonc @@ -0,0 +1,258 @@ +{ + "$schema": "./node_modules/oxlint/configuration_schema.json", + "plugins": ["unicorn", "typescript", "oxc", "import", "promise", "node", "jsdoc", "jest"], + "rules": { + "unicorn/no-new-array": "off", + "unicorn/no-null": "off", + "unicorn/no-useless-undefined": "off", + "constructor-super": "error", + "for-direction": "error", + "no-async-promise-executor": "error", + "no-caller": "error", + "no-class-assign": "error", + "no-compare-neg-zero": "error", + "no-cond-assign": "error", + "no-const-assign": "error", + "no-constant-binary-expression": "error", + "no-constant-condition": "error", + "no-control-regex": "error", + "no-debugger": "error", + "no-delete-var": "error", + "no-dupe-class-members": "error", + "no-dupe-else-if": "error", + "no-dupe-keys": "error", + "no-duplicate-case": "error", + "no-empty-pattern": "error", + "no-ex-assign": "error", + "no-extra-boolean-cast": "error", + "no-func-assign": "error", + "no-global-assign": "error", + "no-import-assign": "error", + "no-invalid-regexp": "error", + "no-irregular-whitespace": "error", + "no-loss-of-precision": "error", + "no-new-native-nonconstructor": "error", + "no-obj-calls": "error", + "no-self-assign": "error", + "no-setter-return": "error", + "no-sparse-arrays": "error", + "no-this-before-super": "error", + "no-unsafe-finally": "error", + "no-unsafe-negation": "error", + "no-unsafe-optional-chaining": "error", + "no-useless-backreference": "error", + "no-useless-catch": "error", + "no-useless-escape": "error", + "no-useless-rename": "error", + "no-with": "error", + "no-empty": [ + "error", + { + "allowEmptyCatch": true, + }, + ], + "curly": "error", + "no-else-return": "error", + "no-unneeded-ternary": "error", + "default-case": "error", + "default-case-last": "error", + "default-param-last": "error", + "no-self-compare": "error", + "no-loop-func": "error", + "typescript/no-empty-object-type": [ + "error", + { + "allowInterfaces": "always", + }, + ], + "typescript/await-thenable": "error", + "typescript/no-array-delete": "error", + "typescript/no-base-to-string": "error", + "typescript/no-confusing-void-expression": "error", + "typescript/no-deprecated": "error", + "typescript/no-duplicate-type-constituents": "error", + "typescript/no-floating-promises": "error", + "typescript/no-for-in-array": "error", + "typescript/no-meaningless-void-operator": "error", + "typescript/no-misused-promises": "error", + "typescript/no-misused-spread": "error", + "typescript/no-mixed-enums": "error", + "typescript/no-redundant-type-constituents": "error", + "typescript/no-unnecessary-boolean-literal-compare": "error", + "typescript/no-unnecessary-template-expression": "error", + "typescript/no-unnecessary-type-arguments": "error", + "typescript/no-unnecessary-type-assertion": "error", + "typescript/no-implied-eval": "error", + "typescript/no-explicit-any": "error", + "typescript/switch-exhaustiveness-check": "error", + "typescript/strict-boolean-expressions": "error", + "typescript/no-unsafe-argument": "error", + "typescript/no-unsafe-assignment": "error", + "typescript/no-unsafe-call": "error", + "typescript/no-unsafe-enum-comparison": "error", + "typescript/no-unsafe-member-access": "error", + "typescript/no-unsafe-return": "error", + "typescript/no-unsafe-type-assertion": "error", + "typescript/no-unsafe-unary-minus": "error", + "typescript/non-nullable-type-assertion-style": "error", + "typescript/only-throw-error": "error", + "typescript/prefer-includes": "error", + "typescript/prefer-nullish-coalescing": "error", + "typescript/prefer-optional-chain": "error", + "typescript/prefer-promise-reject-errors": "error", + "typescript/prefer-reduce-type-parameter": "error", + "typescript/prefer-return-this-type": "error", + "typescript/promise-function-async": "error", + "typescript/related-getter-setter-pairs": "error", + "typescript/require-array-sort-compare": "error", + "typescript/require-await": "error", + "typescript/restrict-plus-operands": "error", + "typescript/restrict-template-expressions": "error", + "typescript/return-await": "error", + "typescript/unbound-method": "error", + "typescript/use-unknown-in-catch-callback-variable": "off", + "no-unused-vars": [ + "error", + { + "args": "all", + "argsIgnorePattern": "^_", + "caughtErrors": "all", + "caughtErrorsIgnorePattern": "^_", + "destructuredArrayIgnorePattern": "^_", + "varsIgnorePattern": "^_", + "ignoreRestSiblings": true, + }, + ], + "promise/catch-or-return": "error", + "promise/always-return": "error", + "promise/no-return-in-finally": "error", + "promise/no-nesting": "error", + "promise/no-multiple-resolved": "error", + "promise/prefer-catch": "error", + "promise/prefer-await-to-then": "error", + "promise/valid-params": "error", + "promise/no-callback-in-promise": "error", + "import/no-cycle": "error", + "import/no-commonjs": "error", + "import/no-amd": "error", + "import/no-dynamic-require": "error", + "import/no-default-export": "error", + "import/first": "error", + "import/exports-last": "error", + "import/no-duplicates": "error", + "import/no-self-import": "error", + "import/no-unassigned-import": "error", + "oxc/missing-throw": "error", + "oxc/number-arg-out-of-range": "error", + "oxc/uninvoked-array-callback": "error", + "oxc/no-accumulating-spread": "error", + "oxc/no-map-spread": "error", + "unicorn/no-unnecessary-await": "error", + "unicorn/no-useless-spread": "error", + "unicorn/prefer-array-find": "error", + "unicorn/prefer-set-has": "error", + "unicorn/prefer-set-size": "error", + "no-eval": "error", + "no-restricted-globals": ["error", "Reflect", "Proxy"], + "no-restricted-imports": [ + "error", + { + "paths": [ + { + "name": "node:module", + "importNames": ["createRequire"], + "message": "Do not import createRequire; avoid require()-based loading.", + }, + { + "name": "module", + "importNames": ["createRequire"], + "message": "Do not import createRequire; avoid require()-based loading.", + }, + ], + }, + ], + }, + "overrides": [ + { + "files": ["**/*.spec.ts", "**/*.test.ts", "**/*.e2e.test.ts"], + "rules": { + "jest/consistent-test-it": "error", + "jest/expect-expect": "error", + "jest/max-expects": "error", + "jest/max-nested-describe": "error", + "jest/no-commented-out-tests": "error", + "jest/no-conditional-expect": "error", + "jest/no-conditional-in-test": "error", + "jest/no-confusing-set-timeout": "error", + "jest/no-disabled-tests": "error", + "jest/no-focused-tests": "error", + "jest/no-done-callback": "error", + "jest/no-duplicate-hooks": "error", + "jest/no-identical-title": "error", + "jest/no-export": "error", + "jest/no-standalone-expect": "error", + "jest/no-test-prefixes": "error", + "jest/no-test-return-statement": "error", + "jest/padding-around-test-blocks": "error", + "jest/require-top-level-describe": "error", + "jest/valid-describe-callback": "error", + "jest/valid-expect": "error", + "jest/valid-title": "error", + }, + }, + { + "files": ["*.config.ts"], + "rules": { + "import/no-default-export": "off", + }, + }, + ], + "settings": { + "jsx-a11y": { + "polymorphicPropName": null, + "components": {}, + "attributes": {}, + }, + "import/resolver": { + "typescript": { + "bun": true, + }, + }, + "next": { + "rootDir": [], + }, + "react": { + "formComponents": [], + "linkComponents": [], + "version": null, + }, + "jsdoc": { + "ignorePrivate": false, + "ignoreInternal": false, + "ignoreReplacesDocs": true, + "overrideReplacesDocs": true, + "augmentsExtendsReplacesDocs": false, + "implementsReplacesDocs": false, + "exemptDestructuredRootsFromChecks": false, + "tagNamePreference": {}, + }, + "vitest": { + "typecheck": false, + }, + }, + "env": { + "builtin": true, + }, + "globals": {}, + "ignorePatterns": [ + "node_modules", + "**/node_modules/**", + "**/*.d.ts", + ".zipbul", + "**/.zipbul/**", + "dist", + "**/dist/**", + ".dependency-cruiser.cjs", + "commitlint.config.cjs", + ], +} diff --git a/packages/router/CHANGELOG.md b/packages/router/CHANGELOG.md index 54feecb..d887011 100644 --- a/packages/router/CHANGELOG.md +++ b/packages/router/CHANGELOG.md @@ -34,7 +34,6 @@ ### Minor Changes - cf5f313: Rewrite router internals from segment-based binary trie to character-level radix trie. - - Character-level LCP-split radix nodes with per-method tree isolation - Iterative radix walker with monomorphic property access (no closure tree) - Inline path normalization (preNormalize + needsDeepNorm fast path) @@ -48,7 +47,6 @@ ### Patch Changes - 665e37c: chore: quality audit across all public packages - - Add `sideEffects: false` and `publishConfig.provenance` to all packages - Add `.npmignore` to all packages - Expand npm keywords for better discoverability diff --git a/packages/router/README.ko.md b/packages/router/README.ko.md index b9b5413..38ef4c2 100644 --- a/packages/router/README.ko.md +++ b/packages/router/README.ko.md @@ -5,12 +5,35 @@ [![npm](https://img.shields.io/npm/v/@zipbul/router)](https://www.npmjs.com/package/@zipbul/router) ![coverage](https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/parkrevil/3965fb9d1fe2d6fc5c321cb38d88c823/raw/router-coverage.json) -Bun을 위한 고성능 래딕스 트리 URL 라우터입니다. -문자 단위 트라이, HTTP 메서드별 트리 분리, 정규식 파라미터 패턴, 구조화된 에러 처리를 지원합니다. +Bun을 위한 고성능 URL 라우터. build-once / match-many. 정적 hot path는 **한 자리 나노초**, 동적 hit은 캐시 warm 시 **~10 ns**, 작고 명확한 공개 API와 구조화된 에러 보고를 제공합니다. -> 정적 라우트는 O(1) Map 조회로 해소됩니다. 동적 라우트는 단형(monomorphic) 프로퍼티 접근을 사용하는 반복형 래딕스 워커로 탐색합니다. +HTTP 서버 boundary (`Bun.serve`, Node `http`, 각종 어댑터)가 라우터에 +정규화된 origin-form pathname을 넘긴다는 전제로 설계되었습니다. -
+> [!NOTE] +> **Bun ≥ 1.0** 대상. `bun:jsc` (JIT tier-up hint) 등 Bun 전용 빌드 산출물을 사용하며, Node 호환 빌드는 게시하지 않습니다. + +--- + +## 📑 목차 + +- [📦 설치](#-설치) +- [🚀 빠른 시작](#-빠른-시작) +- [📚 API 레퍼런스](#-api-레퍼런스) + - [`new Router(options?)`](#new-routertoptions) + - [`router.add(method, path, value)`](#routeraddmethod-path-value) + - [`router.addAll(entries)`](#routeraddallentries) + - [`router.build()`](#routerbuild) + - [`router.match(method, path)`](#routermatchmethod-path) + - [`router.allowedMethods(path)`](#routerallowedmethodspath) +- [🛤️ 라우트 패턴](#️-라우트-패턴) +- [⚙️ 옵션](#️-옵션) +- [🚨 에러 처리](#-에러-처리) +- [🔌 프레임워크 연동](#-프레임워크-연동) +- [⚡ 성능](#-성능) +- [🔒 보안](#-보안) + +--- ## 📦 설치 @@ -18,12 +41,12 @@ Bun을 위한 고성능 래딕스 트리 URL 라우터입니다. bun add @zipbul/router ``` -
+--- ## 🚀 빠른 시작 ```typescript -import { Router, RouterError } from '@zipbul/router'; +import { Router } from '@zipbul/router'; const router = new Router(); @@ -37,13 +60,13 @@ router.build(); const result = router.match('GET', '/users/42'); if (result) { - console.log(result.value); // 'get-user' - console.log(result.params.id); // '42' - console.log(result.meta.source); // 'dynamic' + console.log(result.value); // 'get-user' + console.log(result.params['id']); // '42' + console.log(result.meta.source); // 'dynamic' (첫 호출; 동일 경로 후속 호출은 'cache') } ``` -
+--- ## 📚 API 레퍼런스 @@ -52,23 +75,48 @@ if (result) { 라우터 인스턴스를 생성합니다. `T`는 각 라우트에 저장되는 값의 타입입니다. ```typescript -const router = new Router(); -const router = new Router<() => Response>({ caseSensitive: false }); +const stringRouter = new Router(); +const handlerRouter = new Router<() => Response>({ pathCaseSensitive: false }); ``` +모든 메서드는 분리 호출이 가능합니다 (`const m = router.match; m('GET', '/x')`) — 내부에서 `this`를 읽지 않습니다. + ### `router.add(method, path, value)` -라우트를 등록합니다. 잘못된 경로, 중복 라우트, 또는 `build()` 이후 호출 시 `RouterError`를 던집니다. +라우트를 등록 대기열에 넣습니다. 경로 문법·충돌·중복 검증은 `build()` 시점에서 수행되며, 이 호출 자체는 `build()` 이후에 호출된 경우에만 `RouterError({ kind: 'router-sealed' })`를 던집니다. ```typescript router.add('GET', '/users/:id', handler); -router.add(['GET', 'POST'], '/data', handler); // 복수 메서드 -router.add('*', '/health', handler); // 모든 메서드 +router.add(['GET', 'POST'], '/data', handler); // 복수 메서드 +router.add('*', '/health', handler); // seal 시점에 확장 +``` + +`'*'`는 `build()` 시점에 그 순간까지 등록된 모든 메서드로 확장됩니다 — 7개 HTTP 표준(`GET / POST / PUT / PATCH / DELETE / OPTIONS / HEAD`)에 더해 `build()` 이전에 등록된 다른 라우트가 도입한 모든 커스텀 메서드까지 포함됩니다. + +#### IRI 등록 (RFC 3987) + +raw Unicode (IRI)와 percent-encoded UTF-8 (URI) 두 형태 모두 **등록 시점**에 받습니다. 각 static segment는 NFC normalize 후 percent-encoded UTF-8 (RFC 3986 wire form)으로 변환되어 저장되므로, 두 표기가 한 라우트 entry로 응축됩니다: + +```typescript +router.add('GET', '/users/한국', handler); +router.build(); +// 내부 저장: `/users/%ED%95%9C%EA%B5%AD`. +router.match('GET', '/users/%ED%95%9C%EA%B5%AD'); // ✓ 매칭 +router.match('GET', '/users/한국'); // ✗ 매칭 안 됨 (아래 참고) +``` + +> [!IMPORTANT] +> `router.match()`는 입력 경로를 **normalize하지 않습니다**. URI-form pathname (percent-encoded UTF-8)을 넘기세요 — `Bun.serve`가 `new URL(request.url).pathname`으로 만드는 형태입니다. 비대칭은 의도적: 서버 경계가 이미 URI form을 전달하므로, hot path에 normalize 비용을 매번 지불하는 것은 낭비입니다. + +직접 만든 IRI 입력은 boundary에서 normalize: + +```typescript +const out = router.match('GET', new URL(`/users/${name}`, 'http://localhost').pathname); ``` ### `router.addAll(entries)` -여러 라우트를 한 번에 등록합니다. 첫 번째 실패 시 `RouterError`를 던지며, `registeredCount`로 성공한 수를 알 수 있습니다. +여러 라우트를 한 번에 등록 대기열에 넣습니다. `add()`와 마찬가지로 검증은 `build()` 시점으로 지연되며, 이 호출 자체는 `build()` 이후에 호출된 경우에만 `RouterError({ kind: 'router-sealed' })`를 던집니다. ```typescript router.addAll([ @@ -80,42 +128,58 @@ router.addAll([ ### `router.build()` -래딕스 트라이를 컴파일합니다. `match()` 호출 전에 반드시 실행해야 합니다. 체이닝을 위해 `this`를 반환합니다. +라우터를 봉인하고 특화된 매치 함수를 emit합니다. `match()` 호출 전에 반드시 실행해야 합니다. `this`를 반환하며 두 번째 호출부터는 no-op입니다. ```typescript router.build(); - -// 체이닝 예시 -const router = new Router() - .add('GET', '/users', 'list') - .build(); // ❌ add()는 void를 반환합니다 - -// 올바른 체이닝 -const r = new Router(); -r.add('GET', '/users', 'list'); -r.build(); ``` +`build()` 이후에는 `add()` / `addAll()`가 `RouterError({ kind: 'router-sealed' })`를 던집니다. + ### `router.match(method, path)` -URL을 등록된 라우트와 매칭합니다. `MatchOutput | null`을 반환합니다. -잘못된 입력(미빌드, 경로 초과 등)에는 `RouterError`를 던집니다. +등록된 라우트와 URL을 매칭합니다. `MatchOutput | null`을 반환합니다. + +- `path`는 origin-form pathname이어야 합니다 (RFC 7230 §5.3.1). `Bun.serve`가 `new URL(request.url).pathname`으로 이미 이 형태를 만들어 줍니다. +- `match()` 자체는 path를 디코딩하지 않습니다. `/`로 split한 후 캡처된 param 값만 `decodeURIComponent`로 디코드합니다. param 슬롯의 `%xx`가 잘못되면 표준 `URIError`가 caller로 전파됩니다 — `400 Bad Request`로 매핑하려면 `try / catch`로 감싸세요. +- `build()` 전 호출은 `null` 반환. ```typescript const result = router.match('GET', '/users/42'); if (result) { - result.value; // T — 등록된 값 - result.params; // Record + result.value; // T — 등록된 값 + result.params; // Record (null-prototype) result.meta.source; // 'static' | 'cache' | 'dynamic' } ``` -### `router.clearCache()` +`meta.source`는 caller에게 어떻게 매칭됐는지 알려줍니다: + +| 값 | caller에게 의미 | +| :---------- | :---------------------------------------------------------------------------------------------------------------------------- | +| `'static'` | 리터럴 경로 (param 없음) 라우트. 반환된 `MatchOutput`은 호출 간 공유되고 frozen됨 — 변경 금지. 동일 hit 간 `===` 식별자 보존. | +| `'cache'` | dynamic 매치가 캐시에서 반환됨. 캐시된 `params` 객체는 frozen + 재사용 — 변경 금지, 호출별 identity 의존 금지. | +| `'dynamic'` | dynamic 라우트의 최초 해소. 매 호출마다 새 `MatchOutput` + 자체 `params` 객체. | + +### `router.allowedMethods(path)` + +`path`에 등록된 HTTP 메서드 목록을 반환합니다. HTTP 어댑터가 `404` (라우트 자체 없음)와 `405` (라우트는 있으나 메서드 불일치)를 구분할 때 사용합니다. + +```typescript +const result = router.match('GET', '/users/42'); + +if (result === null) { + const allowed = router.allowedMethods('/users/42'); + if (allowed.length === 0) return respond404(); + return respond405({ Allow: allowed.join(', ') }); +} +``` -캐시된 매칭 결과를 모두 삭제합니다. `enableCache: true`일 때만 유효합니다. +> [!TIP] +> `allowedMethods()`는 **`match()`가 `null`을 반환한 후에만** 호출하세요. `path`에 대해 등록된 모든 메서드 트리를 walk 하므로 `match()` 자체보다 의미 있게 느립니다. 위 404/405 분기 패턴이 권장 용도 — hot match 경로에서 호출 금지. -
+--- ## 🛤️ 라우트 패턴 @@ -128,7 +192,7 @@ router.add('GET', '/api/v1/health', handler); ### 이름 파라미터 -단일 경로 세그먼트를 캡처합니다. 파라미터는 기본적으로 퍼센트 디코딩됩니다. +단일 경로 세그먼트를 캡처합니다. 파라미터 값은 항상 퍼센트 디코딩됩니다. ```typescript router.add('GET', '/users/:id', handler); @@ -138,131 +202,181 @@ router.add('GET', '/users/:id', handler); ### 정규식 파라미터 -인라인 정규식 패턴으로 파라미터를 제한합니다. 패턴은 등록 시 ReDoS 안전성이 검증됩니다. +인라인 정규식으로 파라미터를 제한합니다. `(...)` 안의 본문은 `build()` 시점에 `new RegExp('^(?:body)$')`로 컴파일됩니다. 라우터가 자체 앵커를 적용하므로 본문이 `^`로 시작하거나 `$`로 끝나면 거부됩니다; 그 외에는 JavaScript-valid한 정규식 본문 모두 허용됩니다. ```typescript router.add('GET', '/users/:id(\\d+)', handler); -// /users/42 → 매칭, { id: '42' } +// /users/42 → { id: '42' } // /users/abc → 매칭 안 됨 ``` +> [!WARNING] +> 라우터는 정규식 본문의 ReDoS 위험성 (`(?:a+)+`, `(\w+)\1` 등)을 **검사하지 않습니다**. 검증 패턴은 아래 [정규식 본문 — 라우터가 하는 일과 안 하는 일](#정규식-본문--라우터가-하는-일과-안-하는-일) 참고. + ### 선택적 파라미터 -뒤에 `?`를 붙이면 파라미터가 선택적이 됩니다. 파라미터가 있는 경로와 없는 경로 모두 매칭됩니다. +뒤에 `?`를 붙이면 파라미터가 선택적이 됩니다. 있는 경로와 없는 경로 모두 매칭되며, 누락 시 `params`의 형태는 `omitMissingOptional`로 결정됩니다: ```typescript router.add('GET', '/:lang?/docs', handler); -// /en/docs → { lang: 'en' } -// /docs → { lang: undefined } (또는 omit, optionalParamBehavior에 따라) ``` -### 와일드카드 (`*`) +| `omitMissingOptional` | `/en/docs` | `/docs` | +| :-------------------- | :--------------- | :------------------------------ | +| `true` (기본값) | `{ lang: 'en' }` | `{}` (키 부재) | +| `false` | `{ lang: 'en' }` | `{ lang: undefined }` (키 존재) | -URL의 나머지 부분(슬래시 포함)을 캡처합니다. 퍼센트 디코딩되지 않습니다. +선택적 파라미터에 정규식 제약을 함께 둘 수 있습니다: ```typescript -router.add('GET', '/files/*path', handler); -// /files/a/b/c.txt → { path: 'a/b/c.txt' } -// /files → { path: '' } +router.add('GET', '/x/:id(\\d+)?', handler); +// /x/42 → { id: '42' } +// /x → omitMissingOptional 설정에 따라 present/absent +// /x/abc → 매칭 안 됨 (\d+ 제약 실패) ``` -### 다중 세그먼트 와일드카드 (`+`) +### 와일드카드 -`*`와 같지만 최소 한 글자 이상이 필요합니다. +URL의 나머지 부분 (슬래시 포함)을 캡처합니다. 와일드카드 값은 **퍼센트 디코딩되지 않습니다**. 의미 두 가지 + 표기 두 가지 — colon-form sugar (`:name+` / `:name*`)는 parse 시 거부됩니다: + +| 패턴 | 의미 | 빈 매칭 | +| :------- | :------------------------------------------------------------ | :-------------------------------------------------- | +| `*name` | star — tail 전체를 슬래시 포함하여 캡처 (빈 문자열 허용) | `'/files'`가 `/files/*path`와 매칭 → `{ path: '' }` | +| `*name+` | multi — tail 전체를 슬래시 포함하여 캡처 (비어있지 않음 필수) | `'/assets'`가 `/assets/*file+`와 매칭 안 됨 | ```typescript -router.add('GET', '/assets/+file', handler); +router.add('GET', '/files/*path', handler); +// /files/a/b/c.txt → { path: 'a/b/c.txt' } +// /files → { path: '' } + +router.add('GET', '/assets/*file+', handler); // /assets/style.css → { file: 'style.css' } -// /assets → 매칭 안 됨 +// /assets → 매칭 안 됨 (`*name+` multi-wildcard는 비어있지 않은 tail이 필수) ``` -
+--- ## ⚙️ 옵션 ```typescript interface RouterOptions { - ignoreTrailingSlash?: boolean; // 기본값: true - caseSensitive?: boolean; // 기본값: true - decodeParams?: boolean; // 기본값: true - enableCache?: boolean; // 기본값: false - cacheSize?: number; // 기본값: 1000 - maxPathLength?: number; // 기본값: 2048 - maxSegmentLength?: number; // 기본값: 256 - optionalParamBehavior?: 'omit' | 'setUndefined' | 'setEmptyString'; - regexSafety?: RegexSafetyOptions; - regexAnchorPolicy?: 'warn' | 'error' | 'silent'; - onWarn?: (warning: RouterWarning) => void; + ignoreTrailingSlash?: boolean; + pathCaseSensitive?: boolean; + cacheSize?: number; + omitMissingOptional?: boolean; } + +new Router({ + ignoreTrailingSlash: false, + omitMissingOptional: false, +}); ``` -| 옵션 | 기본값 | 설명 | -|:-----|:-------|:-----| -| `ignoreTrailingSlash` | `true` | `/users/`와 `/users`가 같은 라우트에 매칭 | -| `caseSensitive` | `true` | `/Users`와 `/users`가 다른 라우트 | -| `decodeParams` | `true` | 파라미터 값 퍼센트 디코딩 (`%20` → 공백) | -| `enableCache` | `false` | 동적 매칭 결과 캐싱 | -| `cacheSize` | `1000` | 메서드당 히트 캐시 최대 항목 수 | -| `maxPathLength` | `2048` | 이 길이를 초과하는 경로 거부 | -| `maxSegmentLength` | `256` | 이 길이를 초과하는 세그먼트 거부 | -| `optionalParamBehavior` | `'omit'` | 누락된 선택적 파라미터 처리 방식 | +| 옵션 | 기본값 | 설명 | +| :-------------------- | :----- | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | +| `ignoreTrailingSlash` | `true` | 등록/매치 시점에 trailing slash 1개 collapse — `/a`와 `/a/`가 같은 라우트로 해소. `false` 면 strict 매칭 | +| `pathCaseSensitive` | `true` | `/Users`와 `/users`가 다른 라우트. `false`로 두면 대소문자 무시 매칭 — 케이스 폴딩은 라우트 선택에만 적용되고, 캡처된 param/wildcard 값은 원래 대소문자를 유지. 폴딩은 ASCII(`A`–`Z`) 전용이며, URL path의 non-ASCII는 percent-encoded로 들어오므로(RFC 3986/3987) 이로써 완전함; raw non-ASCII는 변형 없이 보존 | +| `cacheSize` | `1000` | 메서드당 hit 캐시 용량 (다음 2의 거듭제곱으로 올림; bounded approximate-LRU 축출). `[1, 2³⁰]` 범위의 양의 정수 | +| `omitMissingOptional` | `true` | 누락된 선택적 `:name?` 세그먼트의 `params` 형태 — `true` 면 키 자체 생략, `false` 면 `params[name] = undefined` 기록 | -### 정규식 안전성 +참고: -```typescript -interface RegexSafetyOptions { - mode?: 'error' | 'warn'; // 기본값: 'error' - maxLength?: number; // 기본값: 256 - forbidBacktrackingTokens?: boolean; // 기본값: true - forbidBackreferences?: boolean; // 기본값: true - maxExecutionMs?: number; // 선택적 타임아웃 - validator?: (pattern: string) => void; // 커스텀 검증기 -} -``` +- 이름 파라미터 값은 항상 percent-decoded; 와일드카드 캡처는 raw (슬래시 보존). +- 라우트 총 수 제한 없음. 라우트당 제한: **optional segment ≤ 4개**, **capture param ≤ 31개** (param + wildcard). 라우터당 HTTP method **최대 32개**. +- 빈 라우터는 캐시 메모리 0; `build()`가 활성 메서드마다 bounded hit 캐시를 pre-allocate합니다. + +### 캐시 — 기대 동작 + +- **Bounded.** `cacheSize`가 메서드당 상한. 실제 slot 테이블은 다음 2의 거듭제곱으로 올림; slot이 가득 차면 approximate-LRU로 축출. +- **Frozen + 재사용.** cache hit의 `MatchOutput.params`는 `Object.freeze`되어 있고 hit 간 공유 — 변경 금지. +- **Stale될 수 없음.** `build()`가 라우트 테이블 봉인; 캐시 entry는 등록 핸들러와 절대 어긋나지 않음. +- **Dynamic 라우트만.** 정적 라우트는 캐시 skip (이미 O(1) lookup). miss는 캐시에 들어가지 않음. + +### 정규식 본문 — 라우터가 하는 일과 안 하는 일 + +`:id(pattern)`은 다음 두 조건을 만족할 때만 등록됩니다: + +1. 본문이 `new RegExp('^(?:body)$')` 컴파일에 성공 — 실패 → `route-parse`. +2. 본문이 `^`로 시작하거나 `$`로 끝나지 않음 — 라우터가 자체 앵커를 적용하므로 사용자 앵커는 중복 또는 모순 → `route-parse`. + +라우터는 ReDoS-vulnerable shape / capturing group / lookaround / 기타 구조적 속성을 **검사하지 않습니다**. + +> [!CAUTION] +> `(?:a+)+`, `(\w+)\1`, `(a|aa)*` 같은 패턴은 등록에 성공하며, 악의적 입력에 V8/JavaScriptCore 정규식 엔진을 hang 시킬 수 있습니다. **신뢰할 수 없는 정규식 소스를 받는다면 `Router.add()` 호출 전에 검증하세요.** + +검증 옵션: -기본적으로 정규식 패턴은 등록 시 ReDoS 방지를 위해 검증됩니다. 백트래킹 토큰(`.*`, `.+`, `(a+)+`) 또는 역참조가 포함된 패턴은 거부됩니다. +- **`re2`** ([github.com/uhop/node-re2](https://github.com/uhop/node-re2)) — Google RE2 엔진 (backtracking 없음)의 `RegExp` 호환 binding. sandbox 또는 패턴 사전 점검 용도. +- **`recheck`** ([github.com/MakeNowJust/recheck](https://github.com/MakeNowJust/recheck)) — 정적 ReDoS 분석기. `Router.add()` 도달 전에 vulnerable pattern 거부. +- **Allow-list** — 직접 작성/검토한 패턴만 받기. -
+--- ## 🚨 에러 처리 -모든 에러는 구조화된 `data` 객체를 포함한 `RouterError`를 던집니다. +| 메서드 | Throws | 반환 | +| :------------------- | :----------------------------------------------------------------------------------------------------------------- | :----------------------- | +| `add()` / `addAll()` | `RouterError({ kind: 'router-sealed' })`만 — 그 외 모든 검증은 `build()` 시점으로 지연 | `void` | +| `build()` | 라우트별 실패 전체를 담은 `RouterError({ kind: 'route-validation' })` | `this` | +| `match()` | 캡처된 파라미터의 `%xx`가 잘못된 경우 `URIError` — `400 Bad Request`로 매핑하려면 `try / catch`로 감싸세요 | `MatchOutput \| null` | +| `allowedMethods()` | 경로가 정규식 파라미터 walker를 malformed `%xx`로 거치면 `URIError` — `match()`와 동일한 `try / catch` 처리가 필요 | `readonly string[]` | + +모든 `RouterError`는 구조화된 `data` 객체를 함께 가집니다 — `data.kind` (discriminated union)로 좁힌 뒤 종류별 필드(`segment`, `conflictsWith`, `suggestion`, `path`, `method`)에 접근하세요. ```typescript import { Router, RouterError } from '@zipbul/router'; +router.add('GET', '/bad/(unmatched', handler); + try { - router.match('GET', '/some/path'); + router.build(); } catch (e) { if (e instanceof RouterError) { - e.data.kind; // RouterErrKind — 식별자 - e.data.message; // 사람이 읽을 수 있는 설명 - e.data.path; // 문제가 된 경로 - e.data.method; // HTTP 메서드 - e.data.suggestion; // 수정 제안 (가능한 경우) + e.data.kind; // RouterErrorKind — 식별자 (build()라면 보통 'route-validation') + e.data.message; // 사람이 읽을 수 있는 설명 + if (e.data.kind === 'route-validation') { + e.data.errors; // ReadonlyArray<{ index, route, error: RouterErrorData }> + } } } ``` ### 에러 종류 -| 종류 | 발생 시점 | -|:-----|:----------| -| `'router-sealed'` | `build()` 이후 `add()` 호출 | -| `'not-built'` | `build()` 이전에 `match()` 호출 | -| `'route-duplicate'` | 동일한 메서드 + 경로가 이미 등록됨 | -| `'route-conflict'` | 구조적 충돌 (와일드카드/파라미터/정적) | -| `'route-parse'` | 잘못된 경로 문법 | -| `'param-duplicate'` | 같은 경로에 중복 파라미터 이름 | -| `'regex-unsafe'` | 정규식 패턴이 안전성 검사 실패 | -| `'regex-anchor'` | 패턴에 `^` 또는 `$` 포함 (정책이 `'error'`일 때) | -| `'method-limit'` | 32개 이상의 고유 메서드 | -| `'segment-limit'` | 세그먼트가 `maxSegmentLength` 초과 | -| `'regex-timeout'` | 패턴 매칭 타임아웃 | -| `'path-too-long'` | 경로가 `maxPathLength` 초과 | -| `'method-not-found'` | 해당 메서드에 등록된 라우트 없음 | - -
+| 종류 | 발생 시점 | +| :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :--------------------------------------------------------------------------------------------------------------------------------------------------- | +| `'router-sealed'` | `build()` 이후 `add()` / `addAll()` 호출 | +| `'route-duplicate'` | 동일 `(method, path)`가 이미 등록됨 | +| `'route-conflict'` | 같은 트리 위치에서의 구조적 충돌 — 이름이 다른 두 wildcard(`/files/*a` 후 `/files/*b`), 또는 같은 이름의 정규식 파라미터와 비정규식 파라미터 | +| `'route-unreachable'` | 같은 prefix의 기존 wildcard / terminal에 의해 새 라우트가 도달 불가 — 예: 같은 메서드에서 `/files/*path` 후 `/files/list` (또는 어떤 구체 경로) 등록 | +| `'route-parse'` | 잘못된 경로 문법 (선행 슬래시 없음, 닫히지 않은 정규식 그룹, 파라미터 이름의 금지 문자 등) | +| `'param-duplicate'` | 한 경로에 동일 파라미터 이름 두 번 (`/x/:id/y/:id`) | +| `'method-limit'` | 32 개를 초과하는 고유 HTTP 메서드 | +| `'method-empty'` / `'method-invalid-token'` | method 토큰이 HTTP token grammar 위반 (RFC 9110 §5.6.2) | +| `'path-missing-leading-slash'` / `'path-query'` / `'path-fragment'` / `'path-control-char'` / `'path-invalid-pchar'` / `'path-malformed-percent'` / `'path-invalid-utf8'` / `'path-encoded-slash'` / `'path-dot-segment'` / `'path-empty-segment'` | 등록된 path가 router-grammar / RFC 부합 검사 실패 | +| `'router-options-invalid'` | `RouterOptions` 필드 검증 실패 (예: `cacheSize`가 `[1, 2³⁰]` 범위 밖) | +| `'route-validation'` | `build()` 중 한 개 이상의 라우트 검증 실패 — `data.errors`가 라우트별 실패 목록을 담음 | + +### 충돌 예시 + +```typescript +// 다른 메서드끼리는 공존 가능 +router.add('GET', '/files/*path', getHandler); +router.add('POST', '/files/*upload', postHandler); +router.build(); // ok + +// 같은 메서드의 와일드카드 이름 변경: route-conflict +router.add('GET', '/files/*path', getHandler); +router.add('GET', '/files/*upload', anotherHandler); +router.build(); // RouterError({ kind: 'route-validation', errors: [{ error: { kind: 'route-conflict', ... } }] }) + +// 와일드카드 prefix 하위 정적 라우트: route-unreachable (와일드카드가 모든 suffix를 이미 삼키므로) +router.add('GET', '/files/*path', getHandler); +router.add('GET', '/files/list', listHandler); +router.build(); // RouterError({ kind: 'route-validation', errors: [{ error: { kind: 'route-unreachable', ... } }] }) +``` + +--- ## 🔌 프레임워크 연동 @@ -270,13 +384,13 @@ try { Bun.serve ```typescript -import { Router, RouterError } from '@zipbul/router'; +import { Router } from '@zipbul/router'; type Handler = (params: Record) => Response; const router = new Router(); router.add('GET', '/users', () => Response.json({ users: [] })); -router.add('GET', '/users/:id', (p) => Response.json({ id: p.id })); +router.add('GET', '/users/:id', p => Response.json({ id: p.id })); router.add('POST', '/users', () => new Response('Created', { status: 201 })); router.build(); @@ -284,23 +398,21 @@ Bun.serve({ fetch(request) { const url = new URL(request.url); - try { - const result = router.match( - request.method as any, - url.pathname, - ); - - if (!result) { - return new Response('Not Found', { status: 404 }); - } - - return result.value(result.params); - } catch (e) { - if (e instanceof RouterError) { - return Response.json({ error: e.data.kind }, { status: 400 }); - } - return new Response('Internal Server Error', { status: 500 }); - } + // match()는 매칭 라우트가 없으면 null을 반환합니다. `URL(...).pathname` + // 은 RFC 7230 origin-form 보장이라 `decodeURIComponent` 실패는 잘못된 + // `%xx`가 들어온 적대적 요청에서만 발생합니다 — 400 Bad Request로 + // 매핑하려면 try/catch로 감싸세요. + const result = router.match(request.method, url.pathname); + if (result) return result.value(result.params); + + // 콜드패스 API로 404 vs 405 구분. + const allowed = router.allowedMethods(url.pathname); + if (allowed.length === 0) return new Response('Not Found', { status: 404 }); + + return new Response('Method Not Allowed', { + status: 405, + headers: { Allow: allowed.join(', ') }, + }); }, port: 3000, }); @@ -308,23 +420,48 @@ Bun.serve({ -
+--- ## ⚡ 성능 -Bun 1.3.9, Intel i7-13700K 환경에서 인기 JS 라우터 6종과 비교 벤치마크. +`bun 1.3.13`, Linux x64, Intel i7-13700K에서 측정. `regression-snapshot.ts`는 +11회 trial 중앙값, cross-router 표는 (adapter × scenario) 쌍별 별도 프로세스 +실행. 전체 수치·σ·RSS·재현 절차는 [`bench-results.md`](./bench-results.md) 참조. + +| 워크로드 | 중앙값 | +| :------------------------------------ | -------: | +| `build()` — 100 라우트 | 2.51 ms | +| `build()` — 10 000 라우트 | 27.62 ms | +| `match()` — hit / static | 3.64 ns | +| `match()` — hit / dynamic (캐시 warm) | 9.06 ns | +| `match()` — miss / wrong method | 2.64 ns | + +단일 파라미터 hit (`/users/:id`), 어댑터별 별도 프로세스 실행: + +| 어댑터 | avg ns/op | +| :-------------- | --------: | +| **zipbul** | **12.15** | +| memoirist | 40.03 | +| rou3 | 50.81 | +| hono-regexp | 106.42 | +| koa-tree-router | 118.48 | +| find-my-way | 119.07 | +| hono-trie | 236.57 | + +하드웨어 변동 ±20%, sub-10 ns 연산은 clock 해상도 노이즈. 로컬 재현: + +```bash +bun bench/regression-snapshot.ts # 자체 벤치 (11회 trial, σ annotated) +bun bench/comparison.bench.ts # cross-router head-to-head +``` + +--- -| 시나리오 | @zipbul/router | memoirist | find-my-way | rou3 | hono RegExp | koa-tree | -|:---------|:---------------|:----------|:------------|:-----|:------------|:---------| -| 정적 | **30 ns** | 38 ns | 89 ns | <1 ns | 36 ns | 44 ns | -| 파라미터 1개 | 66 ns | **36 ns** | 80 ns | 40 ns | 235 ns | 89 ns | -| 파라미터 3개 | 151 ns | 66 ns | 142 ns | **64 ns** | 94 ns | 265 ns | -| 와일드카드 | 71 ns | **26 ns** | 66 ns | 78 ns | 194 ns | 121 ns | -| 미스 | 45 ns | **18 ns** | 54 ns | 50 ns | 25 ns | 28 ns | +## 🔒 보안 -정적 라우트는 O(1) Map 조회 덕분에 memoirist보다 빠릅니다. 동적 라우트의 차이(~30 ns)는 bare-metal 라우터가 생략하는 안전 기능(정규화, 검증, 구조화된 에러)에서 비롯됩니다. +보안 이슈를 발견하셨다면 [`SECURITY.md`](./SECURITY.md)의 비공개 신고 채널을 이용하세요. 보안 신고는 **공개 GitHub 이슈로 올리지 마세요**. -
+--- ## 📄 라이선스 diff --git a/packages/router/README.md b/packages/router/README.md index d71d707..a4f9990 100644 --- a/packages/router/README.md +++ b/packages/router/README.md @@ -5,12 +5,35 @@ [![npm](https://img.shields.io/npm/v/@zipbul/router)](https://www.npmjs.com/package/@zipbul/router) ![coverage](https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/parkrevil/3965fb9d1fe2d6fc5c321cb38d88c823/raw/router-coverage.json) -A high-performance radix-tree URL router for Bun. -Character-level trie with per-method tree isolation, regex param patterns, and structured error handling. +A high-performance URL router for Bun. Build-once / match-many. Hot static paths land in **single-digit nanoseconds**, dynamic hits around **~10 ns** with a warm cache, all surfaced through a small public API with structured error reporting. -> Static routes resolve via O(1) Map lookup. Dynamic routes traverse an iterative radix walker with monomorphic property access. +Designed for HTTP server boundaries (`Bun.serve`, Node `http`, +adapters) that hand the router a normalized origin-form pathname. -
+> [!NOTE] +> This package targets **Bun ≥ 1.0**. The code uses Bun-specific build artifacts (`bun:jsc` for JIT tier-up hints) and is not published as a Node-compatible build. + +--- + +## 📑 Table of Contents + +- [📦 Installation](#-installation) +- [🚀 Quick Start](#-quick-start) +- [📚 API Reference](#-api-reference) + - [`new Router(options?)`](#new-routertoptions) + - [`router.add(method, path, value)`](#routeraddmethod-path-value) + - [`router.addAll(entries)`](#routeraddallentries) + - [`router.build()`](#routerbuild) + - [`router.match(method, path)`](#routermatchmethod-path) + - [`router.allowedMethods(path)`](#routerallowedmethodspath) +- [🛤️ Route Patterns](#️-route-patterns) +- [⚙️ Options](#️-options) +- [🚨 Error Handling](#-error-handling) +- [🔌 Framework Integration](#-framework-integration) +- [⚡ Performance](#-performance) +- [🔒 Security](#-security) + +--- ## 📦 Installation @@ -18,12 +41,12 @@ Character-level trie with per-method tree isolation, regex param patterns, and s bun add @zipbul/router ``` -
+--- ## 🚀 Quick Start ```typescript -import { Router, RouterError } from '@zipbul/router'; +import { Router } from '@zipbul/router'; const router = new Router(); @@ -37,13 +60,13 @@ router.build(); const result = router.match('GET', '/users/42'); if (result) { - console.log(result.value); // 'get-user' - console.log(result.params.id); // '42' - console.log(result.meta.source); // 'dynamic' + console.log(result.value); // 'get-user' + console.log(result.params['id']); // '42' + console.log(result.meta.source); // 'dynamic' (first call; subsequent calls on the same path return 'cache') } ``` -
+--- ## 📚 API Reference @@ -52,23 +75,48 @@ if (result) { Creates a router instance. `T` is the type of the value stored with each route. ```typescript -const router = new Router(); -const router = new Router<() => Response>({ caseSensitive: false }); +const stringRouter = new Router(); +const handlerRouter = new Router<() => Response>({ pathCaseSensitive: false }); ``` +All methods can be detached (`const m = router.match; m('GET', '/x')`) — they do not read `this`. + ### `router.add(method, path, value)` -Registers a route. Throws `RouterError` on invalid path, duplicate route, or if called after `build()`. +Queues a route for registration. Path-syntax / conflict / duplicate validation runs at `build()` time, not on this call. Throws `RouterError({ kind: 'router-sealed' })` only if called after `build()`. ```typescript router.add('GET', '/users/:id', handler); -router.add(['GET', 'POST'], '/data', handler); // multiple methods -router.add('*', '/health', handler); // all methods +router.add(['GET', 'POST'], '/data', handler); // multiple methods +router.add('*', '/health', handler); // expand-at-seal +``` + +`'*'` expands at `build()` time to every method present at seal — the seven HTTP defaults (`GET / POST / PUT / PATCH / DELETE / OPTIONS / HEAD`) **plus** any custom method introduced by another route registered before `build()`. + +#### IRI registration (RFC 3987) + +Both IRI (raw Unicode) and URI (percent-encoded UTF-8) forms are accepted **at registration**. Each static segment is NFC-normalized and converted to percent-encoded UTF-8 (RFC 3986 wire form) before storage, so both spellings collapse to one route entry: + +```typescript +router.add('GET', '/users/한국', handler); +router.build(); +// Stored internally as `/users/%ED%95%9C%EA%B5%AD`. +router.match('GET', '/users/%ED%95%9C%EA%B5%AD'); // ✓ matches +router.match('GET', '/users/한국'); // ✗ does NOT match (see below) +``` + +> [!IMPORTANT] +> `router.match()` **does not normalize input paths**. Pass a URI-form pathname (percent-encoded UTF-8) — the form `Bun.serve` produces via `new URL(request.url).pathname`. The asymmetry is intentional: the server boundary already delivers URI form, so paying the normalization cost on every `match()` would be wasted work on the hot path. + +For a hand-constructed IRI input, normalize at the boundary: + +```typescript +const out = router.match('GET', new URL(`/users/${name}`, 'http://localhost').pathname); ``` ### `router.addAll(entries)` -Registers multiple routes at once. Throws `RouterError` on first failure, with `registeredCount` indicating how many succeeded. +Queues multiple routes at once. Like `add()`, validation is deferred to `build()`; this call only throws `RouterError({ kind: 'router-sealed' })` if invoked after `build()`. ```typescript router.addAll([ @@ -80,42 +128,58 @@ router.addAll([ ### `router.build()` -Compiles the radix trie. Must be called before `match()`. Returns `this` for chaining. +Seals the router and emits the specialized match function. Must be called before `match()`. Returns `this`. Subsequent calls are a no-op. ```typescript router.build(); - -// or chained -const router = new Router() - .add('GET', '/users', 'list') - .build(); // ❌ add() returns void - -// correct chaining -const r = new Router(); -r.add('GET', '/users', 'list'); -r.build(); ``` +After `build()`, `add()` and `addAll()` throw `RouterError({ kind: 'router-sealed' })`. + ### `router.match(method, path)` Matches a URL against registered routes. Returns `MatchOutput | null`. -Throws `RouterError` on invalid input (not-built, path-too-long, etc.). + +- `path` must be an origin-form pathname (RFC 7230 §5.3.1). `Bun.serve` already produces this form via `new URL(request.url).pathname`. +- `match()` does **not** decode the path itself; it splits on `/` and decodes each captured param value via `decodeURIComponent`. Malformed `%xx` in a param slot propagates the standard `URIError` to the caller — wrap in `try / catch` if you map this to a `400 Bad Request`. +- Calling before `build()` returns `null`. ```typescript const result = router.match('GET', '/users/42'); if (result) { - result.value; // T — the registered value - result.params; // Record + result.value; // T — the registered value + result.params; // Record (null-prototype) result.meta.source; // 'static' | 'cache' | 'dynamic' } ``` -### `router.clearCache()` +`meta.source` tells the caller how the match was resolved: + +| Value | What it means for the caller | +| :---------- | :----------------------------------------------------------------------------------------------------------------------------------------------------------------- | +| `'static'` | A literal-path route (no params). The returned `MatchOutput` is shared across calls and frozen — do not mutate. `===` identity is preserved across identical hits. | +| `'cache'` | A dynamic match served from cache. The cached `params` object is frozen and reused across hits — do not mutate, and do not rely on per-call identity. | +| `'dynamic'` | First-time resolution for a dynamic route. Each call returns a fresh `MatchOutput` with its own `params` object. | -Clears all cached match results. Only relevant when `enableCache: true`. +### `router.allowedMethods(path)` -
+Returns the HTTP methods registered for `path`. Used by HTTP adapters to disambiguate `404` (path has no routes) from `405` (path exists, wrong method). + +```typescript +const result = router.match('GET', '/users/42'); + +if (result === null) { + const allowed = router.allowedMethods('/users/42'); + if (allowed.length === 0) return respond404(); + return respond405({ Allow: allowed.join(', ') }); +} +``` + +> [!TIP] +> Call `allowedMethods()` **only after `match()` returns `null`**. It walks every registered method's tree for `path` and is meaningfully slower than `match()` itself. The 404/405 disambiguation shown above is the intended use; do not call it on hot match paths. + +--- ## 🛤️ Route Patterns @@ -128,7 +192,7 @@ router.add('GET', '/api/v1/health', handler); ### Named parameters -Capture a single path segment. Params are percent-decoded by default. +Capture a single path segment. Param values are always percent-decoded. ```typescript router.add('GET', '/users/:id', handler); @@ -138,131 +202,181 @@ router.add('GET', '/users/:id', handler); ### Regex parameters -Constrain params with inline regex patterns. Patterns are validated for ReDoS safety at registration time. +Constrain params with inline regex. The body inside `(...)` is compiled via `new RegExp('^(?:body)$')` at `build()` time. The router applies its own anchors, so a body that starts with `^` or ends with `$` is rejected; otherwise any JavaScript-valid regex body is accepted. ```typescript router.add('GET', '/users/:id(\\d+)', handler); -// /users/42 → match, { id: '42' } +// /users/42 → { id: '42' } // /users/abc → no match ``` +> [!WARNING] +> The router does **not** gate regex bodies for ReDoS-vulnerable shapes (`(?:a+)+`, `(\w+)\1`, etc.). See [Regex bodies](#regex-bodies--what-the-router-does-and-does-not-do) below for the validation pattern. + ### Optional parameters -A trailing `?` makes a param optional. Both with-param and without-param paths match. +A trailing `?` makes a param optional. Both with-param and without-param URLs match. The shape of `params` for the missing case is controlled by `omitMissingOptional`: ```typescript router.add('GET', '/:lang?/docs', handler); -// /en/docs → { lang: 'en' } -// /docs → { lang: undefined } (or omitted, per optionalParamBehavior) ``` -### Wildcard (`*`) +| `omitMissingOptional` | `/en/docs` | `/docs` | +| :-------------------- | :--------------- | :---------------------------------- | +| `true` (default) | `{ lang: 'en' }` | `{}` (key absent) | +| `false` | `{ lang: 'en' }` | `{ lang: undefined }` (key present) | -Captures the rest of the URL (including slashes). Not percent-decoded. +An optional param can carry a regex constraint — combine the two: ```typescript -router.add('GET', '/files/*path', handler); -// /files/a/b/c.txt → { path: 'a/b/c.txt' } -// /files → { path: '' } +router.add('GET', '/x/:id(\\d+)?', handler); +// /x/42 → { id: '42' } +// /x → present-or-absent per omitMissingOptional +// /x/abc → no match (fails the \d+ constraint) ``` -### Multi-segment wildcard (`+`) +### Wildcards + +Capture the rest of the URL, including slashes. Wildcard values are **not** percent-decoded. Two semantics, two distinct spellings — colon-form sugar (`:name+` / `:name*`) is rejected at parse time: -Like `*` but requires at least one character. +| Pattern | Semantics | Empty match | +| :------- | :------------------------------------------------------------- | :------------------------------------------------- | +| `*name` | Star — match the entire tail, including slashes (may be empty) | `'/files'` against `/files/*path` → `{ path: '' }` | +| `*name+` | Multi — match the entire tail, including slashes (non-empty) | `'/assets'` against `/assets/*file+` → no match | ```typescript -router.add('GET', '/assets/+file', handler); +router.add('GET', '/files/*path', handler); +// /files/a/b/c.txt → { path: 'a/b/c.txt' } +// /files → { path: '' } + +router.add('GET', '/assets/*file+', handler); // /assets/style.css → { file: 'style.css' } -// /assets → no match +// /assets → no match (`*name+` multi-wildcard requires a non-empty tail) ``` -
+--- ## ⚙️ Options ```typescript interface RouterOptions { - ignoreTrailingSlash?: boolean; // Default: true - caseSensitive?: boolean; // Default: true - decodeParams?: boolean; // Default: true - enableCache?: boolean; // Default: false - cacheSize?: number; // Default: 1000 - maxPathLength?: number; // Default: 2048 - maxSegmentLength?: number; // Default: 256 - optionalParamBehavior?: 'omit' | 'setUndefined' | 'setEmptyString'; - regexSafety?: RegexSafetyOptions; - regexAnchorPolicy?: 'warn' | 'error' | 'silent'; - onWarn?: (warning: RouterWarning) => void; + ignoreTrailingSlash?: boolean; + pathCaseSensitive?: boolean; + cacheSize?: number; + omitMissingOptional?: boolean; } + +new Router({ + ignoreTrailingSlash: false, + omitMissingOptional: false, +}); ``` -| Option | Default | Description | -|:-------|:--------|:------------| -| `ignoreTrailingSlash` | `true` | `/users/` and `/users` match the same route | -| `caseSensitive` | `true` | `/Users` and `/users` are different routes | -| `decodeParams` | `true` | Percent-decode param values (`%20` → space) | -| `enableCache` | `false` | Cache dynamic match results | -| `cacheSize` | `1000` | Max entries per method in the hit cache | -| `maxPathLength` | `2048` | Reject paths exceeding this length | -| `maxSegmentLength` | `256` | Reject segments exceeding this length | -| `optionalParamBehavior` | `'omit'` | How to handle missing optional params | +| Option | Default | Description | +| :-------------------- | :------ | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | +| `ignoreTrailingSlash` | `true` | Collapses one trailing slash on registration and at match time, so `/a` and `/a/` resolve to the same route. Set `false` for strict matching | +| `pathCaseSensitive` | `true` | `/Users` and `/users` are different routes. Set `false` to match case-insensitively — case-folding affects route selection only; captured param/wildcard values keep their original case. Folding is ASCII-only (`A`–`Z`), which is complete for URL paths since non-ASCII arrives percent-encoded (RFC 3986/3987); raw non-ASCII is left untouched | +| `cacheSize` | `1000` | Per-method hit-cache capacity (rounded up to next power of two; bounded approximate-LRU eviction). Positive integer in `[1, 2³⁰]` | +| `omitMissingOptional` | `true` | Shape of `params` when an optional `:name?` segment is missing — `true` drops the key, `false` writes `params[name] = undefined` | -### Regex Safety +Notes: -```typescript -interface RegexSafetyOptions { - mode?: 'error' | 'warn'; // Default: 'error' - maxLength?: number; // Default: 256 - forbidBacktrackingTokens?: boolean; // Default: true - forbidBackreferences?: boolean; // Default: true - maxExecutionMs?: number; // Optional timeout - validator?: (pattern: string) => void; // Custom validator -} -``` +- Named param values are always percent-decoded; wildcard captures are returned raw (slash-preserving). +- No total route-count cap. Per-route limits: **≤ 4 optional segments** and **≤ 31 captured params** (param + wildcard). Up to **32 distinct HTTP methods** per router. +- Empty routers allocate zero cache memory; `build()` pre-allocates a bounded hit cache for each active method. + +### Cache — what to expect + +- **Bounded.** `cacheSize` is the per-method ceiling, rounded up to the next power of two. Approximate-LRU eviction kicks in when the slot table fills. +- **Frozen + reused.** `MatchOutput.params` from a cache hit is `Object.freeze`d and shared across hits — do not mutate. +- **Never stale.** `build()` seals the route table; cached entries cannot diverge from registered handlers afterward. +- **Dynamic-route only.** Static routes skip the cache (they're already an O(1) lookup). Misses never populate the cache. + +### Regex bodies — what the router does and does not do + +`:id(pattern)` is registered if and only if: + +1. The body compiles via `new RegExp('^(?:body)$')` — failure → `route-parse`. +2. The body does not start with `^` or end with `$` — the router applies its own anchors, so user anchors would either double up or contradict the wrapper → `route-parse`. -By default, regex patterns are validated at registration time to prevent ReDoS. Patterns with backtracking tokens (`.*`, `.+`, `(a+)+`) or backreferences are rejected. +That's it. The router does **not** inspect the body for ReDoS-vulnerable shapes, capturing groups, lookaround, or any other structural property. -
+> [!CAUTION] +> Patterns like `(?:a+)+`, `(\w+)\1`, or `(a|aa)*` register successfully and can hang the V8/JavaScriptCore regex engine on a crafted input. **If you accept untrusted regex sources, validate them before calling `Router.add()`.** + +Validation options: + +- **`re2`** ([github.com/uhop/node-re2](https://github.com/uhop/node-re2)) — drop-in `RegExp`-compatible binding to Google's RE2 engine (no backtracking). Use as a sandbox or to pre-flight a pattern. +- **`recheck`** ([github.com/MakeNowJust/recheck](https://github.com/MakeNowJust/recheck)) — static ReDoS analyzer. Reject vulnerable patterns before they reach `Router.add()`. +- **Allow-list** — accept only patterns you've handwritten and audited. + +--- ## 🚨 Error Handling -All errors throw `RouterError` with a structured `data` object. +| Method | Throws | Returns | +| :------------------- | :--------------------------------------------------------------------------------------------------------------------- | :----------------------- | +| `add()` / `addAll()` | `RouterError({ kind: 'router-sealed' })` only — every other validation is deferred to `build()` | `void` | +| `build()` | `RouterError({ kind: 'route-validation' })` listing every per-route failure | `this` | +| `match()` | `URIError` if a captured param's `%xx` is malformed — wrap in `try / catch` to map to `400 Bad Request` | `MatchOutput \| null` | +| `allowedMethods()` | `URIError` if the path drives a regex-param walker through malformed `%xx` — same `try / catch` treatment as `match()` | `readonly string[]` | + +Every `RouterError` carries a structured `data` object — narrow on `data.kind` (discriminated union) to access kind-specific fields like `segment`, `conflictsWith`, `suggestion`, `path`, `method`. ```typescript import { Router, RouterError } from '@zipbul/router'; +router.add('GET', '/bad/(unmatched', handler); + try { - router.match('GET', '/some/path'); + router.build(); } catch (e) { if (e instanceof RouterError) { - e.data.kind; // RouterErrKind — discriminant - e.data.message; // Human-readable description - e.data.path; // The problematic path - e.data.method; // The HTTP method - e.data.suggestion; // Fix suggestion (when available) + e.data.kind; // RouterErrorKind — discriminant (e.g. 'route-validation' from build()) + e.data.message; // Human-readable description + if (e.data.kind === 'route-validation') { + e.data.errors; // ReadonlyArray<{ index, route, error: RouterErrorData }> + } } } ``` ### Error Kinds -| Kind | When | -|:-----|:-----| -| `'router-sealed'` | `add()` called after `build()` | -| `'not-built'` | `match()` called before `build()` | -| `'route-duplicate'` | Same method + path already registered | -| `'route-conflict'` | Structural conflict (wildcard/param/static) | -| `'route-parse'` | Invalid path syntax | -| `'param-duplicate'` | Duplicate param name in same path | -| `'regex-unsafe'` | Regex pattern failed safety check | -| `'regex-anchor'` | Pattern contains `^` or `$` (when policy = `'error'`) | -| `'method-limit'` | More than 32 distinct methods | -| `'segment-limit'` | Segment exceeds `maxSegmentLength` | -| `'regex-timeout'` | Pattern matching timed out | -| `'path-too-long'` | Path exceeds `maxPathLength` | -| `'method-not-found'` | No routes registered for this method | - -
+| Kind | When | +| :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | +| `'router-sealed'` | `add()` / `addAll()` called after `build()` | +| `'route-duplicate'` | Same `(method, path)` already registered | +| `'route-conflict'` | Structural collision at the same tree position — e.g. two wildcards with different names (`/files/*a` then `/files/*b`) or a regex param vs a non-regex param of the same name | +| `'route-unreachable'` | A new route would be shadowed by an existing wildcard / terminal at the same prefix — e.g. registering `/files/list` (or any specific path) after `/files/*path` for the same method | +| `'route-parse'` | Invalid path syntax (no leading slash, unclosed regex group, illegal char in param name, etc.) | +| `'param-duplicate'` | Same param name appears twice in one path (`/x/:id/y/:id`) | +| `'method-limit'` | More than 32 distinct HTTP methods registered | +| `'method-empty'` / `'method-invalid-token'` | Method token violates the HTTP token grammar (RFC 9110 §5.6.2) | +| `'path-missing-leading-slash'` / `'path-query'` / `'path-fragment'` / `'path-control-char'` / `'path-invalid-pchar'` / `'path-malformed-percent'` / `'path-invalid-utf8'` / `'path-encoded-slash'` / `'path-dot-segment'` / `'path-empty-segment'` | The registered path violates the router-grammar / RFC-conformance gate at registration time | +| `'router-options-invalid'` | A `RouterOptions` field failed validation (e.g. `cacheSize` outside `[1, 2³⁰]`) | +| `'route-validation'` | One or more routes failed validation during `build()` — `data.errors` lists each per-route failure | + +### Conflict examples + +```typescript +// Cross-method coexistence is allowed +router.add('GET', '/files/*path', getHandler); +router.add('POST', '/files/*upload', postHandler); +router.build(); // ok + +// Same-method wildcard rename: route-conflict +router.add('GET', '/files/*path', getHandler); +router.add('GET', '/files/*upload', anotherHandler); +router.build(); // throws RouterError({ kind: 'route-validation', errors: [ { error: { kind: 'route-conflict', ... } } ] }) + +// Static under wildcard prefix: route-unreachable (the wildcard already swallows the entire suffix) +router.add('GET', '/files/*path', getHandler); +router.add('GET', '/files/list', listHandler); +router.build(); // throws RouterError({ kind: 'route-validation', errors: [ { error: { kind: 'route-unreachable', ... } } ] }) +``` + +--- ## 🔌 Framework Integration @@ -270,13 +384,13 @@ try { Bun.serve ```typescript -import { Router, RouterError } from '@zipbul/router'; +import { Router } from '@zipbul/router'; type Handler = (params: Record) => Response; const router = new Router(); router.add('GET', '/users', () => Response.json({ users: [] })); -router.add('GET', '/users/:id', (p) => Response.json({ id: p.id })); +router.add('GET', '/users/:id', p => Response.json({ id: p.id })); router.add('POST', '/users', () => new Response('Created', { status: 201 })); router.build(); @@ -284,23 +398,21 @@ Bun.serve({ fetch(request) { const url = new URL(request.url); - try { - const result = router.match( - request.method as any, - url.pathname, - ); - - if (!result) { - return new Response('Not Found', { status: 404 }); - } - - return result.value(result.params); - } catch (e) { - if (e instanceof RouterError) { - return Response.json({ error: e.data.kind }, { status: 400 }); - } - return new Response('Internal Server Error', { status: 500 }); - } + // match() returns null for no route. `URL(...).pathname` is always + // origin-form per RFC 7230, so `decodeURIComponent` failures only + // surface here on adversarial requests with malformed `%xx` — wrap + // in try/catch if you want to map them to 400 Bad Request. + const result = router.match(request.method, url.pathname); + if (result) return result.value(result.params); + + // Disambiguate 404 vs 405 via the cold-path API. + const allowed = router.allowedMethods(url.pathname); + if (allowed.length === 0) return new Response('Not Found', { status: 404 }); + + return new Response('Method Not Allowed', { + status: 405, + headers: { Allow: allowed.join(', ') }, + }); }, port: 3000, }); @@ -308,23 +420,49 @@ Bun.serve({ -
+--- ## ⚡ Performance -Benchmarked against 6 popular JS routers on Bun 1.3.9, Intel i7-13700K. +Measured on `bun 1.3.13`, Linux x64, Intel i7-13700K, 11-trial median per +`regression-snapshot.ts` row, fresh-process-per-pair for the cross-router +table. Full numbers, σ, RSS, and reproduction procedure in +[`bench-results.md`](./bench-results.md). + +| Workload | median | +| :------------------------------------- | -------: | +| `build()` — 100 routes | 2.51 ms | +| `build()` — 10 000 routes | 27.62 ms | +| `match()` — hit / static | 3.64 ns | +| `match()` — hit / dynamic (warm cache) | 9.06 ns | +| `match()` — miss / wrong method | 2.64 ns | + +Cross-router single-param hit (`/users/:id`), fresh-process-per-adapter: + +| Adapter | avg ns/op | +| :-------------- | --------: | +| **zipbul** | **12.15** | +| memoirist | 40.03 | +| rou3 | 50.81 | +| hono-regexp | 106.42 | +| koa-tree-router | 118.48 | +| find-my-way | 119.07 | +| hono-trie | 236.57 | + +Hardware variance is ±20 % and sub-10 ns ops hit clock-granularity noise. Reproduce locally with: + +```bash +bun bench/regression-snapshot.ts # self-bench (11 trials, σ-annotated) +bun bench/comparison.bench.ts # cross-router head-to-head +``` + +--- -| Scenario | @zipbul/router | memoirist | find-my-way | rou3 | hono RegExp | koa-tree | -|:---------|:---------------|:----------|:------------|:-----|:------------|:---------| -| static | **30 ns** | 38 ns | 89 ns | <1 ns | 36 ns | 44 ns | -| 1 param | 66 ns | **36 ns** | 80 ns | 40 ns | 235 ns | 89 ns | -| 3 params | 151 ns | 66 ns | 142 ns | **64 ns** | 94 ns | 265 ns | -| wildcard | 71 ns | **26 ns** | 66 ns | 78 ns | 194 ns | 121 ns | -| miss | 45 ns | **18 ns** | 54 ns | 50 ns | 25 ns | 28 ns | +## 🔒 Security -Static routes are faster than memoirist thanks to O(1) Map lookup. The dynamic route gap (~30 ns) is entirely from safety features (normalization, validation, structured errors) that bare-metal routers skip. +Found a security issue? See [`SECURITY.md`](./SECURITY.md) for the private reporting channel. **Do not** open a public GitHub issue for security reports. -
+--- ## 📄 License diff --git a/packages/router/SECURITY.md b/packages/router/SECURITY.md new file mode 100644 index 0000000..64c2ea8 --- /dev/null +++ b/packages/router/SECURITY.md @@ -0,0 +1,49 @@ +# Security policy — `@zipbul/router` + +## Supported versions + +| Version | Security fixes | +| ------------------ | --------------------------------------- | +| Latest `0.x` minor | Yes | +| Older `0.x` minor | Upgrade to the latest `0.x` minor first | + +Pre-1.0 packages carry no security backport guarantee. + +## Reporting a vulnerability + +**Do not open a public GitHub issue for security reports.** + +Email **revil.com@gmail.com** with subject prefix `[zipbul/router security]`. Include: + +- Installed version (`npm ls @zipbul/router`) +- Reproduction steps (smallest possible test case — ideally a failing `bun test` file) +- Observed impact (DoS, information disclosure, etc.) +- Your disclosure timeline preference (if any) + +Acknowledgement within 5 business days. If no response, mention privately to a maintainer. + +## Disclosure timeline + +- **Day 0** — report received, ack within 5 business days. +- **Day 0-14** — triage + reproduction. Severity (low / medium / high / critical) assigned. +- **Day 14-30** — patch for critical / high. Medium / low may take longer. +- **Day +0** — coordinated disclosure. Patch released and CVE requested if applicable. + +## Out-of-scope (framework / user responsibility, not the router) + +The router intentionally delegates the following surfaces: + +- **Runtime URL validation** — `match(method, path)` treats inputs as already-validated origin-form pathnames (RFC 7230 §5.3.1). Malformed percent-encoding propagates as `URIError` from `decodeURIComponent`. Validate at the HTTP server boundary (`Bun.serve` / `Node http` / `Express` / `Fastify` / `Hono`). +- **Regex ReDoS** — `:id(pattern)` accepts any syntactically valid regex. Patterns like `(?:a+)+` register and run on V8/JavaScriptCore's backtracking engine as-is. If you accept untrusted regex sources, layer a normalizer plug-in (`re2`, `recheck`) ahead of the router. +- **Runtime method-token validation** — `match()` accepts any method string. Filter invalid HTTP methods at the framework layer. +- **Rate limiting / DoS** — the router has no built-in rate limit. Deeply nested paths consume memory proportional to path length. Apply rate-limit middleware upstream. + +Reports targeting these surfaces will be redirected. + +## Hall of fame + +Reporters who follow this policy are credited in the release notes for the corresponding fix, unless they request anonymity. + +--- + +See also [`../../SECURITY.md`](../../SECURITY.md) for the monorepo-wide security entry point. diff --git a/packages/router/bench-results.md b/packages/router/bench-results.md new file mode 100644 index 0000000..614447d --- /dev/null +++ b/packages/router/bench-results.md @@ -0,0 +1,160 @@ +# Bench results + +> Recorded with `bun bench/regression-snapshot.ts` and +> `bun bench/comparison.bench.ts`. The cross-router orchestrator spawns +> one fresh child process per `(adapter × scenario)` pair so JIT, IC, and +> RSS state are isolated across measurements. + +| Field | Value | +| -------- | ----------------------------------------------------------------------------------- | +| Runtime | `bun 1.3.13` (`node 24.3.0`) | +| Platform | Linux x64 | +| CPU | 13th Gen Intel Core i7-13700K | +| Adapters | find-my-way 9, memoirist 0.4, rou3 0.7, hono 4.12, koa-tree-router 0.13, radix3 1.1 | + +## Self-bench (build / match / RSS) + +`bun bench/regression-snapshot.ts` — 11 trials per row, `σ` is relative +stddev. **min** is the trust signal: σ above ~10 % means clock-granularity +or libpas noise dominates, lean on `min`. + +### `build()` + +| Routes | median | min | max | σ | +| -----: | -------: | -------: | -------: | ----: | +| 10 | 2.28 ms | 2.10 ms | 3.33 ms | 17.3% | +| 100 | 2.51 ms | 2.37 ms | 3.16 ms | 9.8% | +| 1 000 | 4.58 ms | 4.20 ms | 5.12 ms | 6.0% | +| 10 000 | 27.62 ms | 25.77 ms | 29.85 ms | 4.9% | + +### `match()` + +| Scenario | median | min | max | σ | +| ------------------------- | --------: | --------: | --------: | ----: | +| hit / static | 3.64 ns | 0.33 ns | 7.49 ns | 70.1% | +| hit / dynamic, warm cache | 9.06 ns | 8.01 ns | 18.99 ns | 32.4% | +| hit / dynamic, cache-cold | 597.84 ns | 552.25 ns | 668.91 ns | 5.5% | +| miss / unknown path | 3.01 ns | 0.36 ns | 9.27 ns | 62.4% | +| miss / wrong method | 2.64 ns | 2.13 ns | 5.87 ns | 37.8% | + +Static-hit and unknown-path entries report `min` near JSC's monomorphic +inline ceiling — at that grain mitata's `do_not_optimize` cannot fully +defeat JIT folding, so `median` carries the real signal. + +### RSS after `build()` + +| Scenario | before | after | Δ | +| ------------- | -------: | -------: | ------: | +| static 1 000 | 64.88 MB | 65.12 MB | 0.25 MB | +| dynamic 1 000 | 63.30 MB | 63.63 MB | 0.33 MB | +| mixed 10 000 | 63.36 MB | 68.52 MB | 5.16 MB | + +## Cross-router comparison + +`bun bench/comparison.bench.ts` — every `(adapter × scenario)` pair runs +in a fresh child process; each table lists `avg` ns/op of the first hit +sample (ordered fastest first). + +### Static (100 routes) + +| Adapter | avg ns | p75 ns | +| --------------- | -----: | -----: | +| zipbul | 2.98 | 3.47 | +| hono-regexp | 4.09 | 5.51 | +| rou3 | 5.59 | 7.58 | +| memoirist | 39.29 | 48.25 | +| koa-tree-router | 40.82 | 50.16 | +| find-my-way | 96.54 | 107.80 | +| hono-trie | 145.48 | 165.71 | + +### Single param (`/users/:id`) + +| Adapter | avg ns | p75 ns | +| --------------- | -----: | -----: | +| zipbul | 12.15 | 11.64 | +| memoirist | 40.03 | 45.99 | +| rou3 | 50.81 | 52.86 | +| hono-regexp | 106.42 | 123.52 | +| koa-tree-router | 118.48 | 134.15 | +| find-my-way | 119.07 | 133.82 | +| hono-trie | 236.57 | 296.23 | + +### 3-deep params (`/repos/:owner/:repo/issues/:number`) + +| Adapter | avg ns | p75 ns | +| --------------- | -----: | -----: | +| zipbul | 11.74 | 12.63 | +| rou3 | 70.28 | 68.01 | +| memoirist | 79.89 | 76.46 | +| hono-regexp | 113.92 | 137.83 | +| find-my-way | 198.73 | 241.06 | +| koa-tree-router | 282.38 | 305.90 | +| hono-trie | 336.79 | 355.06 | + +### Wildcard (`/static/*path`, deep tail) + +| Adapter | avg ns | p75 ns | +| --------------- | -----: | -----: | +| zipbul | 11.52 | 10.02 | +| hono-regexp | 67.31 | 69.76 | +| find-my-way | 73.45 | 78.34 | +| rou3 | 101.79 | 107.50 | +| hono-trie | 132.73 | 114.95 | +| koa-tree-router | 136.98 | 151.40 | + +memoirist is excluded by the sanity gate on this scenario (wildcard hit +returns null). + +### GitHub-realistic — static endpoint (65-route fixture, `/user`) + +| Adapter | avg ns | p75 ns | +| --------------- | -----: | -----: | +| zipbul | 0.32 | 0.24 | +| hono-regexp | 2.75 | 2.41 | +| rou3 | 2.87 | 2.50 | +| memoirist | 17.38 | 15.08 | +| find-my-way | 39.34 | 33.28 | +| koa-tree-router | 61.26 | 64.45 | +| hono-trie | 87.81 | 75.20 | + +### GitHub-realistic — 3-param endpoint (65-route fixture, `/repos/:owner/:repo/issues/:number`) + +| Adapter | avg ns | p75 ns | +| --------------- | -----: | -----: | +| zipbul | 12.80 | 11.08 | +| rou3 | 73.23 | 66.06 | +| memoirist | 88.12 | 85.73 | +| find-my-way | 185.52 | 181.92 | +| hono-regexp | 235.94 | 263.93 | +| hono-trie | 397.98 | 377.79 | +| koa-tree-router | 404.41 | 390.17 | + +### Miss / unknown path + +| Adapter | avg ns | p75 ns | +| --------------- | -----: | -----: | +| zipbul | 0.07 | 0.05 | +| memoirist | 12.45 | 12.19 | +| hono-regexp | 19.84 | 16.68 | +| koa-tree-router | 26.14 | 23.82 | +| rou3 | 26.39 | 23.38 | +| find-my-way | 33.03 | 30.17 | +| hono-trie | 128.46 | 112.36 | + +The sub-ns rows on `static` and `miss` reflect JSC inlining the bench +body when the call site is monomorphic and the result is unused +downstream — true single-call cost is in the few-ns range. The +relative gap against other adapters is the load-bearing signal. + +## Reproduce + +```bash +bun bench/regression-snapshot.ts # self-bench, JSON output +bun bench/comparison.bench.ts # 49 (adapter × scenario) pairs +bun bench/complex-shapes.bench.ts # 33 (router × shape) pairs +bun bench/100k-gate-runner.ts # 100k-scale verification +``` + +Hardware variance is ±20 % and sub-10 ns ops hit clock-granularity +noise. Re-record on the same machine before drawing release-gate +conclusions. diff --git a/packages/router/bench/100k-bun-serve-baseline.ts b/packages/router/bench/100k-bun-serve-baseline.ts new file mode 100644 index 0000000..d5c4b22 --- /dev/null +++ b/packages/router/bench/100k-bun-serve-baseline.ts @@ -0,0 +1,128 @@ +import { performance } from 'node:perf_hooks'; + +import { fmtMem, mem, median, printEnv, settleScavenger } from './helpers'; + +const COUNT = 100_000; +const ITER = 2_000; +const WARM_RUNS = 3; + +const SERVE_BUILD_TIMEOUT_MS = 60_000; +const SERVE_MEM_CAP_MB = 2_048; + +printEnv(); +console.log(`buildTimeoutMs=${SERVE_BUILD_TIMEOUT_MS} memCapMB=${SERVE_MEM_CAP_MB}`); +console.log(`preparing routes=${COUNT}`); + +settleScavenger(); +const before = mem(); +const prepStart = performance.now(); +const routes: Record = {}; + +for (let i = 0; i < COUNT; i++) { + routes[`/api/v1/resource-${i}`] = new Response(String(i)); +} +const prepMs = performance.now() - prepStart; +settleScavenger(); +const afterPrep = mem(); +console.log(`routes object prepared prep=${prepMs.toFixed(2)}ms mem=${fmtMem(before, afterPrep)}`); + +function startServer(): { server: ReturnType; buildMs: number } { + const t0 = performance.now(); + const s = Bun.serve({ + port: 0, + routes, + fetch() { + return new Response('miss', { status: 404 }); + }, + }); + return { server: s, buildMs: performance.now() - t0 }; +} + +console.log('starting Bun.serve'); +let { server, buildMs } = startServer(); +settleScavenger(); +const after = mem(); + +if (buildMs > SERVE_BUILD_TIMEOUT_MS) { + console.log(`init=${buildMs.toFixed(2)}ms timeoutClass=serve-init exceeded ${SERVE_BUILD_TIMEOUT_MS}ms`); + server.stop(true); + process.exit(1); +} +if (after.rss / 1024 / 1024 > SERVE_MEM_CAP_MB) { + console.log(`init=${buildMs.toFixed(2)}ms memCapClass=exceeded rss=${(after.rss / 1024 / 1024).toFixed(2)}MB`); + server.stop(true); + process.exit(1); +} + +console.log( + `Bun.serve routes=${COUNT} init=${buildMs.toFixed(2)}ms initMem=${fmtMem(afterPrep, after)} totalMem=${fmtMem(before, after)} port=${server.port}`, +); + +async function firstRequest(path: string): Promise<{ usFirst: number; statusFirst: number }> { + const start = performance.now(); + const res = await fetch(`http://127.0.0.1:${server.port}${path}`); + const status = res.status; + await res.text(); + const usFirst = (performance.now() - start) * 1000; + return { usFirst, statusFirst: status }; +} + +async function warmedRequest(path: string): Promise<{ usAvg: number; checksum: number }> { + for (let i = 0; i < 100; i++) { + const res = await fetch(`http://127.0.0.1:${server.port}${path}`); + await res.text(); + } + + const start = performance.now(); + let checksum = 0; + for (let i = 0; i < ITER; i++) { + const res = await fetch(`http://127.0.0.1:${server.port}${path}`); + checksum += res.status; + await res.text(); + } + const usAvg = ((performance.now() - start) * 1000) / ITER; + return { usAvg, checksum }; +} + +let restartCount = 0; +let restartTotalMs = 0; +async function restartServer(): Promise { + server.stop(true); + const { server: s, buildMs: ms } = startServer(); + server = s; + restartCount++; + restartTotalMs += ms; +} + +async function benchPhases(path: string): Promise { + await restartServer(); + const cold = await firstRequest(path); + + const warmMeans: number[] = []; + let warmChecksum = 0; + for (let i = 0; i < WARM_RUNS; i++) { + await restartServer(); + const w = await warmedRequest(path); + warmMeans.push(w.usAvg); + warmChecksum = w.checksum; + } + console.log( + `${path.padEnd(28)} firstRequest=${cold.usFirst.toFixed(2)}us status=${cold.statusFirst}` + + ` warmedRuns=${WARM_RUNS} warmedMedian=${median(warmMeans).toFixed(2)}us` + + ` warmedMin=${Math.min(...warmMeans).toFixed(2)}us` + + ` warmedMax=${Math.max(...warmMeans).toFixed(2)}us checksum=${warmChecksum}`, + ); +} + +try { + await benchPhases('/api/v1/resource-0'); + await benchPhases(`/api/v1/resource-${Math.floor(COUNT / 2)}`); + await benchPhases(`/api/v1/resource-${COUNT - 1}`); + await benchPhases('/api/v1/resource-x'); +} finally { + server.stop(true); +} +const restartMean = restartCount > 0 ? restartTotalMs / restartCount : 0; +console.log( + `serverRestarts=${restartCount} restartTotalMs=${restartTotalMs.toFixed(2)} ` + `restartMeanMs=${restartMean.toFixed(2)}`, +); diff --git a/packages/router/bench/100k-external-baselines.ts b/packages/router/bench/100k-external-baselines.ts new file mode 100644 index 0000000..b88cc7b --- /dev/null +++ b/packages/router/bench/100k-external-baselines.ts @@ -0,0 +1,536 @@ +import FindMyWay from 'find-my-way'; +import { RegExpRouter } from 'hono/router/reg-exp-router'; +import { TrieRouter } from 'hono/router/trie-router'; +import KoaTreeRouter from 'koa-tree-router'; +import { Memoirist } from 'memoirist'; +import { spawnSync } from 'node:child_process'; +import { performance } from 'node:perf_hooks'; +import { fileURLToPath } from 'node:url'; +import { createRouter as createRadix3, type RadixNodeData, type RadixRouter } from 'radix3'; +import { addRoute, createRouter as createRou3, findRoute } from 'rou3'; + +import { Router } from '../src/router'; +import { fmtMem, mem, median, percentile, printEnv, settleScavenger } from './helpers'; + +type Route = [method: string, path: string, value: number]; + +interface KoaFindResult { + handle: unknown; + params: Array<{ key: string; value: string }>; +} +interface KoaTreeRouterWithFind { + find(method: string, path: string): KoaFindResult; +} +type Radix3Data = RadixNodeData<{ method: string; value: number }>; + +const COUNT = 100_000; +const ITER = 200_000; + +const isWorker = process.argv.length > 2; +const target = process.argv[2] ?? ''; +const scenarioName = process.argv[3] ?? ''; + +function nowNs(): bigint { + return process.hrtime.bigint(); +} + +function staticRoutes(): Route[] { + const out: Route[] = []; + for (let i = 0; i < COUNT; i++) { + out.push(['GET', `/api/v1/resource-${i}`, i]); + } + return out; +} + +function paramRoutes(): Route[] { + const out: Route[] = []; + for (let i = 0; i < COUNT; i++) { + out.push(['GET', `/tenant-${i}/users/:id/posts/:postId`, i]); + } + return out; +} + +function wildcardRoutes(): Route[] { + const out: Route[] = []; + for (let g = 0; g < 1000; g++) { + for (let b = 0; b < 100; b++) { + out.push(['GET', `/files/group-${g}/bucket-${b * 1000 + g}/*p`, g * 100 + b]); + } + } + return out; +} + +function mixedRoutes(): Route[] { + const out: Route[] = []; + for (let i = 0; i < COUNT; i++) { + const mod = i % 4; + if (mod === 0) { + out.push(['GET', `/v${i % 20}/static/resource-${i}`, i]); + } else if (mod === 1) { + out.push(['GET', `/v${i % 20}/users/:id/items/${i}`, i]); + } else if (mod === 2) { + out.push(['POST', `/v${i % 20}/orgs/:org/repos/:repo/actions/${i}`, i]); + } else { + out.push(['GET', `/v${i % 20}/files/${i}/*path`, i]); + } + } + return out; +} + +type MethodPath = readonly [method: string, path: string]; + +interface Scenario { + routes: Route[]; + hits: readonly MethodPath[]; + misses: readonly MethodPath[]; + wrongMethod: MethodPath; +} + +function scenario(): Scenario { + if (scenarioName === 'param') { + return { + routes: paramRoutes(), + hits: [ + ['GET', '/tenant-0/users/42/posts/7'], + ['GET', '/tenant-50000/users/42/posts/7'], + ['GET', '/tenant-99999/users/42/posts/7'], + ], + misses: [['GET', '/tenant-x/users/42/posts/7']], + wrongMethod: ['POST', '/tenant-0/users/42/posts/7'], + }; + } + + if (scenarioName === 'wildcard') { + return { + routes: wildcardRoutes(), + hits: [ + ['GET', '/files/group-0/bucket-0/a.txt'], + ['GET', '/files/group-0/bucket-50000/a/b/c.txt'], + ['GET', '/files/group-999/bucket-99999/a/b/c.txt'], + ], + misses: [['GET', '/files/group-x/bucket-0/a.txt']], + wrongMethod: ['POST', '/files/group-0/bucket-0/a.txt'], + }; + } + + if (scenarioName === 'mixed') { + return { + routes: mixedRoutes(), + hits: [ + ['GET', '/v0/static/resource-0'], + ['GET', '/v1/users/42/items/50001'], + ['POST', '/v2/orgs/acme/repos/core/actions/50002'], + ['GET', '/v19/files/99999/a/b/c.txt'], + ], + misses: [['GET', '/v0/none']], + wrongMethod: ['PATCH', '/v0/static/resource-0'], + }; + } + + if (scenarioName !== 'static') { + console.error(`Unknown scenario '${scenarioName}'. Choices: static, param, wildcard, mixed`); + process.exit(1); + } + + return { + routes: staticRoutes(), + hits: [ + ['GET', '/api/v1/resource-0'], + ['GET', '/api/v1/resource-50000'], + ['GET', '/api/v1/resource-99999'], + ], + misses: [['GET', '/api/v1/resource-x']], + wrongMethod: ['POST', '/api/v1/resource-0'], + }; +} + +function bench(name: string, fn: () => unknown): void { + for (let i = 0; i < 20_000; i++) { + fn(); + } + + const start = nowNs(); + let checksum = 0; + for (let i = 0; i < ITER; i++) { + const result = fn(); + if (result !== undefined && result !== null) { + checksum++; + } + } + const ns = Number(nowNs() - start) / ITER; + console.log(`${name.padEnd(28)} ${ns.toFixed(2)} ns/op checksum=${checksum}`); +} + +interface AdapterMeta { + pkg: string; + scenarios: ReadonlySet<'static' | 'param' | 'wildcard' | 'mixed'>; + notes: string; + rewritePath?: (path: string) => string; +} + +function rewriteWildcardTrailing(path: string, replacement: string): string { + return path.replace(/\/\*[^/]*$/, replacement); +} + +const adapterMeta: Record = { + zipbul: { + pkg: '@zipbul/router (workspace)', + scenarios: new Set(['static', 'param', 'wildcard', 'mixed']), + notes: 'in-tree implementation under test', + }, + 'find-my-way': { + pkg: 'find-my-way', + scenarios: new Set(['static', 'param', 'wildcard', 'mixed']), + notes: 'wildcard tail registered as bare `/*` (find-my-way drops the wildcard name)', + rewritePath: path => rewriteWildcardTrailing(path, '/*'), + }, + memoirist: { + pkg: 'memoirist', + scenarios: new Set(['static', 'param', 'wildcard', 'mixed']), + notes: 'wildcard tail registered as `/*name` (memoirist accepts the canonical form)', + }, + rou3: { + pkg: 'rou3', + scenarios: new Set(['static', 'param', 'wildcard', 'mixed']), + notes: 'wildcard tail rewritten to `/**:name` (rou3 reserves `**` for catch-all)', + rewritePath: path => path.replace(/\/\*([^/]+)$/, '/**:$1'), + }, + 'hono-trie': { + pkg: 'hono/router/trie-router', + scenarios: new Set(['static', 'param']), + notes: 'static-only / param-only — wildcard and mixed shapes return ambiguous matches', + }, + 'hono-regexp': { + pkg: 'hono/router/reg-exp-router', + scenarios: new Set(['static', 'param']), + notes: 'param-only — wildcard/mixed unsupported by RegExpRouter', + }, + 'koa-tree-router': { + pkg: 'koa-tree-router', + scenarios: new Set(['static', 'param']), + notes: 'static-only / param-only — wildcard and mixed unsupported', + }, + radix3: { + pkg: 'radix3', + scenarios: new Set(['static', 'param', 'wildcard']), + notes: 'method-agnostic — composite key `${method} ${path}` per route, lookup mirrors', + rewritePath: path => path.replace(/\/\*([^/]+)$/, '/**:$1'), + }, +}; + +const PACKAGE_JSON_LOADERS: Record { version?: unknown }> = { + 'find-my-way': () => require('find-my-way/package.json') as { version?: unknown }, + hono: () => require('hono/package.json') as { version?: unknown }, + 'koa-tree-router': () => require('koa-tree-router/package.json') as { version?: unknown }, + memoirist: () => require('memoirist/package.json') as { version?: unknown }, + radix3: () => require('radix3/package.json') as { version?: unknown }, + rou3: () => require('rou3/package.json') as { version?: unknown }, +}; + +function resolveAdapterVersion(pkg: string): string { + if (pkg.startsWith('@zipbul/')) { + return 'workspace'; + } + const top = pkg.split('/')[0]!; + const loader = PACKAGE_JSON_LOADERS[top]; + if (loader === undefined) { + return 'unresolvable'; + } + try { + const meta = loader(); + return typeof meta.version === 'string' ? meta.version : 'unknown'; + } catch { + return 'unresolvable'; + } +} + +const BUILD_TIMEOUT_MS = 60_000; +const BENCH_MEMORY_CAP_MB = 2_048; + +function correctnessCheck( + router: unknown, + match: (router: unknown, method: string, path: string) => unknown, + sc: Scenario, +): { ok: true } | { ok: false; reason: string; detail: string } { + for (const [m, p] of sc.hits) { + const r = match(router, m, p); + if (r === null || r === undefined) { + return { ok: false, reason: 'hit-returned-null', detail: `${m} ${p}` }; + } + } + for (const [m, p] of sc.misses) { + const r = match(router, m, p); + if (r !== null && r !== undefined) { + return { ok: false, reason: 'miss-returned-non-null', detail: `${m} ${p}` }; + } + } + const [wmm, wmp] = sc.wrongMethod; + const wm = match(router, wmm, wmp); + if (wm !== null && wm !== undefined) { + return { + ok: false, + reason: 'wrong-method-returned-non-null', + detail: `${wmm} ${wmp}`, + }; + } + return { ok: true }; +} + +async function measure( + name: string, + build: (rs: Route[]) => unknown, + match: (router: unknown, method: string, path: string) => unknown, +): Promise { + const meta = adapterMeta[name]; + const sc = scenario(); + const version = meta !== undefined ? resolveAdapterVersion(meta.pkg) : 'unknown'; + console.log( + `baseline=${name} version=${version} scenario=${scenarioName} routes=${COUNT}` + + ` buildTimeoutMs=${BUILD_TIMEOUT_MS} memCapMB=${BENCH_MEMORY_CAP_MB}`, + ); + if (meta === undefined) { + console.log('skip=true reason=no-adapter-meta'); + return; + } + if (!meta.scenarios.has(scenarioName as 'static' | 'param' | 'wildcard' | 'mixed')) { + console.log(`skip=true reason=scenario-unsupported note=${JSON.stringify(meta.notes)}`); + return; + } + const rewrite = meta.rewritePath; + const rs = rewrite === undefined ? sc.routes : sc.routes.map(([m, p, v]) => [m, rewrite(p), v] as Route); + settleScavenger(); + const before = mem(); + const start = performance.now(); + let router: unknown; + try { + router = build(rs); + } catch (error) { + console.log(`build failed: ${error instanceof Error ? error.message : String(error)}`); + return; + } + const buildMs = performance.now() - start; + if (buildMs > BUILD_TIMEOUT_MS) { + console.log(`build=${buildMs.toFixed(2)}ms timeoutClass=build phase exceeded ${BUILD_TIMEOUT_MS}ms`); + return; + } + settleScavenger(); + const after = mem(); + if (after.rss / 1024 / 1024 > BENCH_MEMORY_CAP_MB) { + console.log(`build=${buildMs.toFixed(2)}ms memCapClass=exceeded rss=${(after.rss / 1024 / 1024).toFixed(2)}MB`); + return; + } + console.log(`build=${buildMs.toFixed(2)}ms mem=${fmtMem(before, after)}`); + const correctness = correctnessCheck(router, match, sc); + if (!correctness.ok) { + console.log(`correctnessClass=mismatch reason=${correctness.reason} detail=${JSON.stringify(correctness.detail)}`); + return; + } + const probeFn = (m: string, p: string) => () => match(router, m, p); + for (let i = 0; i < sc.hits.length; i++) { + const [m, p] = sc.hits[i]!; + bench(`hit ${i}`, probeFn(m, p)); + } + for (let i = 0; i < sc.misses.length; i++) { + const [m, p] = sc.misses[i]!; + bench(`miss ${i}`, probeFn(m, p)); + } + const [wm, wp] = sc.wrongMethod; + bench('wrong-method', probeFn(wm, wp)); +} + +const builders: Record Promise> = { + zipbul: () => + measure( + 'zipbul', + rs => { + const router = new Router(); + for (const [method, path, value] of rs) { + router.add(method as 'GET', path, value); + } + router.build(); + return router; + }, + (router, method, path) => (router as Router).match(method, path), + ), + 'find-my-way': () => + measure( + 'find-my-way', + rs => { + const router = FindMyWay({ ignoreTrailingSlash: true }); + for (const [method, path, value] of rs) { + router.on(method as 'GET', path, () => value); + } + return router; + }, + (router, method, path) => (router as ReturnType).find(method as 'GET', path), + ), + memoirist: () => + measure( + 'memoirist', + rs => { + const router = new Memoirist(); + for (const [method, path, value] of rs) { + router.add(method, path, value); + } + return router; + }, + (router, method, path) => (router as Memoirist).find(method, path), + ), + rou3: () => + measure( + 'rou3', + rs => { + const router = createRou3(); + for (const [method, path, value] of rs) { + addRoute(router, method, path, value); + } + return router; + }, + (router, method, path) => findRoute(router as ReturnType>, method, path), + ), + 'hono-trie': () => + measure( + 'hono-trie', + rs => { + const router = new TrieRouter(); + for (const [method, path, value] of rs) { + router.add(method, path, value); + } + return router; + }, + (router, method, path) => { + const result = (router as TrieRouter).match(method, path) as unknown as [unknown[]]; + return result[0].length > 0 ? result : null; + }, + ), + 'hono-regexp': () => + measure( + 'hono-regexp', + rs => { + const router = new RegExpRouter(); + for (const [method, path, value] of rs) { + router.add(method, path, value); + } + return router; + }, + (router, method, path) => { + const result = (router as RegExpRouter).match(method, path) as unknown as [unknown[]]; + return result[0].length > 0 ? result : null; + }, + ), + 'koa-tree-router': () => + measure( + 'koa-tree-router', + rs => { + const router = new KoaTreeRouter(); + for (const [method, path, value] of rs) { + router.on(method, path, () => value); + } + return router; + }, + (router, method, path) => { + const result = (router as KoaTreeRouterWithFind).find(method, path); + return result.handle === null ? null : result; + }, + ), + radix3: () => + measure( + 'radix3', + rs => { + const router = createRadix3(); + for (const [method, path, value] of rs) { + router.insert(`/${method}${path}`, { method, value }); + } + return router; + }, + (router, method, path) => (router as RadixRouter).lookup(`/${method}${path}`) ?? null, + ), +}; + +if (isWorker) { + const run = builders[target]; + if (run === undefined) { + console.error(`Unknown baseline '${target}'. Choices: ${Object.keys(builders).join(', ')}`); + process.exit(1); + } + printEnv(); + await run(); +} else { + const selfPath = fileURLToPath(import.meta.url); + const scenarios = ['static', 'param', 'wildcard', 'mixed'] as const; + const adapters = Object.keys(builders); + const RUNS = 3; + + printEnv(); + console.log( + `adapters=${adapters.length} scenarios=${scenarios.length} runs=${RUNS} (each pair runs in a fresh process; ${RUNS} runs per pair for percentile)`, + ); + + interface PairRun { + buildMs: number; + rssMb: number; + heapMb: number; + hitNs: number[]; + missNs: number[]; + wrongMethodNs: number[]; + } + + function parsePairRun(stdout: string): PairRun | null { + const build = stdout.match(/build=([0-9.]+)ms mem=rss=([0-9.-]+)MB heap=([0-9.-]+)MB/); + if (build === null) { + return null; + } + const hits = [...stdout.matchAll(/^hit \d+\s+([0-9.]+) ns\/op checksum=/gm)].map(m => Number(m[1])); + const misses = [...stdout.matchAll(/^miss \d+\s+([0-9.]+) ns\/op checksum=/gm)].map(m => Number(m[1])); + const wrong = [...stdout.matchAll(/^wrong-method\s+([0-9.]+) ns\/op checksum=/gm)].map(m => Number(m[1])); + return { + buildMs: Number(build[1]), + rssMb: Number(build[2]), + heapMb: Number(build[3]), + hitNs: hits, + missNs: misses, + wrongMethodNs: wrong, + }; + } + + function fmt(value: number, digits = 2): string { + return Number.isFinite(value) ? value.toFixed(digits) : 'n/a'; + } + + for (const scenario of scenarios) { + for (const adapter of adapters) { + console.log(`\n=== ${adapter} / ${scenario} ===`); + const runs: PairRun[] = []; + for (let i = 0; i < RUNS; i++) { + const child = spawnSync('bun', [selfPath, adapter, scenario], { encoding: 'utf8', maxBuffer: 1024 * 1024 * 16 }); + if (child.status !== 0) { + console.error(`run=${i + 1} status=${child.status}`); + console.error(child.stderr); + continue; + } + process.stdout.write(child.stdout); + const parsed = parsePairRun(child.stdout); + if (parsed !== null) { + runs.push(parsed); + } + } + if (runs.length === 0) { + continue; + } + const builds = runs.map(r => r.buildMs); + const rss = runs.map(r => r.rssMb); + const heap = runs.map(r => r.heapMb); + const hits = runs.flatMap(r => r.hitNs); + const misses = runs.flatMap(r => r.missNs); + const wrong = runs.flatMap(r => r.wrongMethodNs); + console.log( + `summary adapter=${adapter} scenario=${scenario} runs=${runs.length} ` + + `buildMedian=${fmt(median(builds))}ms buildMax=${fmt(Math.max(...builds))}ms ` + + `rssMedian=${fmt(median(rss))}MB heapMedian=${fmt(median(heap))}MB ` + + `hitMedian=${fmt(median(hits))}ns hitP99=${fmt(percentile(hits, 99))}ns ` + + `missMedian=${fmt(median(misses))}ns missP99=${fmt(percentile(misses, 99))}ns ` + + `wrongMethodMedian=${fmt(median(wrong))}ns wrongMethodP99=${fmt(percentile(wrong, 99))}ns`, + ); + } + } +} diff --git a/packages/router/bench/100k-external-correctness.ts b/packages/router/bench/100k-external-correctness.ts new file mode 100644 index 0000000..87754ac --- /dev/null +++ b/packages/router/bench/100k-external-correctness.ts @@ -0,0 +1,325 @@ +import FindMyWay from 'find-my-way'; +import { TrieRouter } from 'hono/router/trie-router'; +import KoaTreeRouter from 'koa-tree-router'; +import { Memoirist } from 'memoirist'; +import { performance } from 'node:perf_hooks'; +import { addRoute, createRouter as createRou3, findRoute } from 'rou3'; + +import { Router } from '../src/router'; +import { printEnv } from './helpers'; + +printEnv(); + +type Route = [method: string, path: string, value: number]; + +type Probe = { + method: string; + path: string; + expect: { kind: 'no-match' } | { kind: 'match'; value: number; params?: Record }; +}; + +type MatchResult = { value: number | undefined; params?: Record }; + +interface Adapter { + name: string; + build: (routes: Route[]) => unknown; + match: (router: unknown, method: string, path: string) => MatchResult | null; +} + +function defineAdapter(adapter: { + name: string; + build: (routes: Route[]) => R; + match: (router: R, method: string, path: string) => MatchResult | null; +}): Adapter { + return adapter as Adapter; +} + +interface KoaFindResult { + handle: unknown; + params?: Array<{ key: string; value: string }>; +} +interface KoaTreeRouterWithFind { + on(method: string, path: string, handler: () => unknown, store: unknown): void; + find(method: string, path: string): KoaFindResult | null; +} + +type HonoMatch = [Array<[number, Record]>, unknown[]] | undefined; + +const adapters: Adapter[] = [ + defineAdapter({ + name: 'zipbul', + build: rs => { + const r = new Router(); + for (const [m, p, v] of rs) { + r.add(m, p, v); + } + r.build(); + return r; + }, + match: (r, m, p) => { + const out = r.match(m, p); + return out === null ? null : { value: out.value, params: out.params }; + }, + }), + defineAdapter({ + name: 'find-my-way', + build: rs => { + const r = FindMyWay({ ignoreTrailingSlash: true }); + for (const [m, p, v] of rs) { + r.on(m as 'GET', p, () => v, v); + } + return r; + }, + match: (r, m, p) => { + const out = r.find(m as 'GET', p); + if (out === null) { + return null; + } + return { value: out.store as number, params: out.params }; + }, + }), + defineAdapter({ + name: 'rou3', + build: rs => { + const r = createRou3(); + for (const [m, p, v] of rs) { + const path = p.replace(/\*([a-zA-Z_][a-zA-Z0-9_]*)/g, '**:$1'); + addRoute(r, m, path, v); + } + return r; + }, + match: (r, m, p) => { + const out = findRoute(r, m, p); + if (out === undefined) { + return null; + } + return { value: out.data!, params: out.params }; + }, + }), + defineAdapter({ + name: 'memoirist', + build: rs => { + const r = new Memoirist(); + for (const [m, p, v] of rs) { + r.add(m, p, v); + } + return r; + }, + match: (r, m, p) => { + const out = r.find(m, p); + if (out === null) { + return null; + } + return { value: out.store, params: out.params }; + }, + }), + defineAdapter({ + name: 'koa-tree-router', + build: rs => { + const r = new KoaTreeRouter() as unknown as KoaTreeRouterWithFind; + for (const [m, p, v] of rs) { + r.on(m, p, () => v, { v }); + } + return r; + }, + match: (r, m, p) => { + const out = r.find(m, p); + if (out === null || out.handle === null) { + return null; + } + const params: Record = {}; + if (out.params) { + for (const { key, value } of out.params) { + params[key] = value; + } + } + return { value: undefined, params }; + }, + }), + defineAdapter({ + name: 'hono-trie', + build: rs => { + const r = new TrieRouter(); + for (const [m, p, v] of rs) { + r.add(m, p, v); + } + return r; + }, + match: (r, m, p) => { + const result = r.match(m, p) as unknown as HonoMatch; + if (!result || !result[0] || result[0].length === 0) { + return null; + } + const handlerEntry = result[0][0]!; + const value = handlerEntry[0]; + const paramIdxMap = handlerEntry[1]; + const paramArr = result[1]; + const params: Record = {}; + if (paramIdxMap && paramArr) { + for (const [k, idx] of Object.entries(paramIdxMap)) { + if (paramArr[idx] !== undefined) { + params[k] = paramArr[idx] as string; + } + } + } + return { value, params }; + }, + }), +]; + +function deepEqualParams( + a: Record | undefined, + b: Record | undefined, +): boolean { + if (a === undefined && b === undefined) { + return true; + } + if (a === undefined || b === undefined) { + return false; + } + const ak = Object.keys(a).sort(); + const bk = Object.keys(b).sort(); + if (ak.length !== bk.length) { + return false; + } + for (let i = 0; i < ak.length; i++) { + if (ak[i] !== bk[i]) { + return false; + } + if (a[ak[i]!] !== b[ak[i]!]) { + return false; + } + } + return true; +} + +function runScenario(scenarioName: string, routes: Route[], probes: Probe[]): void { + console.log(`\n=== scenario: ${scenarioName} (routes=${routes.length}, probes=${probes.length}) ===`); + for (const a of adapters) { + let r: unknown; + const buildStart = performance.now(); + try { + r = a.build(routes); + } catch (e) { + console.log(` ${a.name.padEnd(18)}: BUILD-FAIL (${(e as Error).message.slice(0, 60)})`); + continue; + } + const buildMs = performance.now() - buildStart; + + let pass = 0, + fail = 0; + const fails: string[] = []; + for (const probe of probes) { + let res: MatchResult | null; + try { + res = a.match(r, probe.method, probe.path); + } catch (e) { + fail++; + fails.push(`${probe.method} ${probe.path} → THROW (${(e as Error).message.slice(0, 30)})`); + continue; + } + if (probe.expect.kind === 'no-match') { + if (res === null) { + pass++; + } else { + fail++; + fails.push(`${probe.method} ${probe.path} → expected no-match, got ${JSON.stringify(res).slice(0, 60)}`); + } + } else { + if (res === null) { + fail++; + fails.push(`${probe.method} ${probe.path} → expected match, got null`); + continue; + } + const valueMatches = a.name === 'koa-tree-router' ? true : res.value === probe.expect.value; + const paramsMatch = deepEqualParams(res.params, probe.expect.params); + if (valueMatches && paramsMatch) { + pass++; + } else { + fail++; + fails.push( + `${probe.method} ${probe.path} → value=${res.value}, params=${JSON.stringify(res.params)} (expected ${probe.expect.value}, ${JSON.stringify(probe.expect.params)})`, + ); + } + } + } + console.log(` ${a.name.padEnd(18)}: build=${buildMs.toFixed(1)}ms ${pass}/${probes.length} pass ${fail} fail`); + for (const f of fails.slice(0, 3)) { + console.log(` ✗ ${f}`); + } + if (fails.length > 3) { + console.log(` ... +${fails.length - 3} more`); + } + } +} + +const staticRoutes: Array<[string, string, number]> = []; +for (let i = 0; i < 1000; i++) { + staticRoutes.push(['GET', `/api/v1/resource-${i}`, i]); +} + +runScenario('static-1k', staticRoutes, [ + { method: 'GET', path: '/api/v1/resource-0', expect: { kind: 'match', value: 0, params: {} } }, + { method: 'GET', path: '/api/v1/resource-500', expect: { kind: 'match', value: 500, params: {} } }, + { method: 'GET', path: '/api/v1/resource-999', expect: { kind: 'match', value: 999, params: {} } }, + { method: 'GET', path: '/api/v1/missing', expect: { kind: 'no-match' } }, + { method: 'POST', path: '/api/v1/resource-0', expect: { kind: 'no-match' } }, +]); + +const paramRoutes: Array<[string, string, number]> = []; +for (let i = 0; i < 1000; i++) { + paramRoutes.push(['GET', `/tenant-${i}/users/:user/posts/:post`, i]); +} + +runScenario('param-1k', paramRoutes, [ + { method: 'GET', path: '/tenant-0/users/42/posts/7', expect: { kind: 'match', value: 0, params: { user: '42', post: '7' } } }, + { + method: 'GET', + path: '/tenant-500/users/abc/posts/xyz', + expect: { kind: 'match', value: 500, params: { user: 'abc', post: 'xyz' } }, + }, + { method: 'GET', path: '/tenant-999/users/U/posts/P', expect: { kind: 'match', value: 999, params: { user: 'U', post: 'P' } } }, + { method: 'GET', path: '/tenant-x/users/42/posts/7', expect: { kind: 'no-match' } }, +]); + +const wildcardRoutes: Array<[string, string, number]> = []; +for (let i = 0; i < 100; i++) { + wildcardRoutes.push(['GET', `/files/group-${i}/*path`, i]); +} + +runScenario('wildcard-100', wildcardRoutes, [ + { method: 'GET', path: '/files/group-0/a/b/c.txt', expect: { kind: 'match', value: 0, params: { path: 'a/b/c.txt' } } }, + { method: 'GET', path: '/files/group-50/x.png', expect: { kind: 'match', value: 50, params: { path: 'x.png' } } }, + { + method: 'GET', + path: '/files/group-99/deep/nested/path/file.bin', + expect: { kind: 'match', value: 99, params: { path: 'deep/nested/path/file.bin' } }, + }, +]); + +runScenario( + 'wrong-method', + [ + ['GET', '/x', 1], + ['POST', '/y', 2], + ], + [ + { method: 'GET', path: '/x', expect: { kind: 'match', value: 1, params: {} } }, + { method: 'POST', path: '/x', expect: { kind: 'no-match' } }, + { method: 'PATCH', path: '/x', expect: { kind: 'no-match' } }, + { method: 'POST', path: '/y', expect: { kind: 'match', value: 2, params: {} } }, + { method: 'GET', path: '/y', expect: { kind: 'no-match' } }, + ], +); + +runScenario( + 'falsy-values', + [ + ['GET', '/zero', 0], + ['GET', '/neg', -1], + ], + [ + { method: 'GET', path: '/zero', expect: { kind: 'match', value: 0, params: {} } }, + { method: 'GET', path: '/neg', expect: { kind: 'match', value: -1, params: {} } }, + ], +); diff --git a/packages/router/bench/100k-gate-runner.ts b/packages/router/bench/100k-gate-runner.ts new file mode 100644 index 0000000..f7ee8f4 --- /dev/null +++ b/packages/router/bench/100k-gate-runner.ts @@ -0,0 +1,94 @@ +import { spawnSync } from 'node:child_process'; +import { dirname, resolve } from 'node:path'; +import { fileURLToPath } from 'node:url'; + +import { median, percentile, printEnv } from './helpers'; + +type RunResult = { + buildMs: number; + rssMb: number; + heapMb: number; + arrayBuffersMb: number; + firstNs: number[]; + hitNs: number[]; + missNs: number[]; +}; + +const scenarios = [ + '100k static', + '100k param', + '100k mixed', + '100k high-fanout', + '100k versioned-api', + '100k wildcard-heavy', + '100k regex-heavy', +]; +const runs = 3; +const benchDir = dirname(fileURLToPath(import.meta.url)); +const verificationPath = resolve(benchDir, '100k-verification.ts'); + +printEnv(); + +function parseRun(stdout: string): RunResult { + const build = stdout.match(/build=([0-9.]+)ms mem=rss=([0-9.-]+)MB heap=([0-9.-]+)MB arrayBuffers=([0-9.-]+)MB/); + if (build === null) { + throw new Error(`failed to parse build line\n${stdout}`); + } + + const firstNs = [...stdout.matchAll(/^first .+? (\d+)ns$/gm)].map(match => Number(match[1])); + const hitNs = [...stdout.matchAll(/^hit .+? ([0-9.]+) ns\/op checksum=/gm)].map(match => Number(match[1])); + const missNs = [...stdout.matchAll(/^miss .+? ([0-9.]+) ns\/op checksum=/gm)].map(match => Number(match[1])); + + return { + buildMs: Number(build[1]), + rssMb: Number(build[2]), + heapMb: Number(build[3]), + arrayBuffersMb: Number(build[4]), + firstNs, + hitNs, + missNs, + }; +} + +function fmt(value: number, digits = 2): string { + return Number.isFinite(value) ? value.toFixed(digits) : 'n/a'; +} + +for (const scenario of scenarios) { + const results: RunResult[] = []; + console.log(`\n## ${scenario}`); + + for (let i = 0; i < runs; i++) { + const child = spawnSync('bun', [verificationPath, scenario], { encoding: 'utf8', maxBuffer: 1024 * 1024 * 16 }); + + if (child.status !== 0) { + console.error(child.stdout); + console.error(child.stderr); + throw new Error(`${scenario} run ${i + 1} failed with status ${child.status}`); + } + + const parsed = parseRun(child.stdout); + results.push(parsed); + console.log( + `run=${i + 1} build=${fmt(parsed.buildMs)}ms rss=${fmt(parsed.rssMb)}MB heap=${fmt(parsed.heapMb)}MB ` + + `firstMax=${fmt(Math.max(...parsed.firstNs), 0)}ns hitMax=${fmt(Math.max(...parsed.hitNs))}ns missMax=${fmt(Math.max(...parsed.missNs))}ns`, + ); + } + + const builds = results.map(result => result.buildMs); + const rss = results.map(result => result.rssMb); + const heap = results.map(result => result.heapMb); + const buffers = results.map(result => result.arrayBuffersMb); + const first = results.flatMap(result => result.firstNs); + const hits = results.flatMap(result => result.hitNs); + const misses = results.flatMap(result => result.missNs); + + console.log( + `summary scenario="${scenario}" runs=${runs} ` + + `buildMedian=${fmt(median(builds))}ms buildMax=${fmt(Math.max(...builds))}ms ` + + `rssMedian=${fmt(median(rss))}MB heapMedian=${fmt(median(heap))}MB arrayBuffersMedian=${fmt(median(buffers))}MB ` + + `firstMedian=${fmt(median(first), 0)}ns firstP75=${fmt(percentile(first, 75), 0)}ns firstP99=${fmt(percentile(first, 99), 0)}ns ` + + `hitMedian=${fmt(median(hits))}ns hitP75=${fmt(percentile(hits, 75))}ns hitP99=${fmt(percentile(hits, 99))}ns ` + + `missMedian=${fmt(median(misses))}ns missP75=${fmt(percentile(misses, 75))}ns missP99=${fmt(percentile(misses, 99))}ns`, + ); +} diff --git a/packages/router/bench/100k-verification.ts b/packages/router/bench/100k-verification.ts new file mode 100644 index 0000000..5047483 --- /dev/null +++ b/packages/router/bench/100k-verification.ts @@ -0,0 +1,360 @@ +import { performance } from 'node:perf_hooks'; + +import { Router } from '../src/router'; +import { fmtMem, mem, printEnv, settleScavenger } from './helpers'; + +type Route = [method: string, path: string, value: number]; +type Scenario = { + name: string; + routes: Route[]; + hits: Array<[method: string, path: string]>; + misses: Array<[method: string, path: string]>; +}; + +const COUNT = 100_000; +const ITER = 500_000; +const scenarioFilter = process.argv[2] ?? 'all'; + +function nowNs(): bigint { + return process.hrtime.bigint(); +} + +function bench(name: string, fn: () => unknown): void { + for (let i = 0; i < 20_000; i++) { + fn(); + } + + const start = nowNs(); + let checksum = 0; + for (let i = 0; i < ITER; i++) { + if (fn() !== null) { + checksum++; + } + } + const end = nowNs(); + const ns = Number(end - start) / ITER; + + console.log(`${name.padEnd(36)} ${ns.toFixed(2).padStart(10)} ns/op checksum=${checksum}`); +} + +function buildZipbul(routes: Route[]): { router: Router; buildMs: number; memDelta: string } { + const before = mem(); + const router = new Router(); + const addStart = performance.now(); + + for (const [method, path, value] of routes) { + router.add(method as 'GET', path, value); + } + + router.build(); + const buildMs = performance.now() - addStart; + settleScavenger(); + const after = mem(); + + return { router, buildMs, memDelta: fmtMem(before, after) }; +} + +function staticScenario(): Scenario { + const routes: Route[] = []; + for (let i = 0; i < COUNT; i++) { + routes.push(['GET', `/api/v1/resource-${i}`, i]); + } + + return { + name: '100k static', + routes, + hits: [ + ['GET', '/api/v1/resource-0'], + ['GET', '/api/v1/resource-50000'], + ['GET', '/api/v1/resource-99999'], + ], + misses: [ + ['GET', '/api/v1/resource-x'], + ['POST', '/api/v1/resource-50000'], + ], + }; +} + +function paramScenario(): Scenario { + const routes: Route[] = []; + for (let i = 0; i < COUNT; i++) { + routes.push(['GET', `/tenant-${i}/users/:id/posts/:postId`, i]); + } + + return { + name: '100k param', + routes, + hits: [ + ['GET', '/tenant-0/users/42/posts/7'], + ['GET', '/tenant-50000/users/42/posts/7'], + ['GET', '/tenant-99999/users/42/posts/7'], + ], + misses: [ + ['GET', '/tenant-x/users/42/posts/7'], + ['POST', '/tenant-50000/users/42/posts/7'], + ], + }; +} + +function mixedScenario(): Scenario { + const routes: Route[] = []; + for (let i = 0; i < COUNT; i++) { + const mod = i % 4; + if (mod === 0) { + routes.push(['GET', `/v${i % 20}/static/resource-${i}`, i]); + } else if (mod === 1) { + routes.push(['GET', `/v${i % 20}/users/:id/items/${i}`, i]); + } else if (mod === 2) { + routes.push(['POST', `/v${i % 20}/orgs/:org/repos/:repo/actions/${i}`, i]); + } else { + routes.push(['GET', `/v${i % 20}/files/${i}/*path`, i]); + } + } + + return { + name: '100k mixed', + routes, + hits: [ + ['GET', '/v0/static/resource-0'], + ['GET', '/v1/users/42/items/50001'], + ['POST', '/v2/orgs/acme/repos/core/actions/50002'], + ['GET', '/v19/files/99999/a/b/c.txt'], + ], + misses: [ + ['GET', '/v0/none'], + ['PATCH', '/v0/static/resource-0'], + ], + }; +} + +function highFanoutScenario(): Scenario { + const routes: Route[] = []; + for (let i = 0; i < COUNT; i++) { + routes.push(['GET', `/root/child-${i}`, i]); + } + + return { + name: '100k high-fanout', + routes, + hits: [ + ['GET', '/root/child-0'], + ['GET', '/root/child-50000'], + ['GET', '/root/child-99999'], + ], + misses: [ + ['GET', '/root/nope'], + ['POST', '/root/child-50000'], + ], + }; +} + +function versionedApiScenario(): Scenario { + const routes: Route[] = []; + const methods = ['GET', 'POST', 'PATCH', 'DELETE'] as const; + for (let i = 0; i < COUNT; i++) { + routes.push([ + methods[i % methods.length]!, + `/api/v${i % 50}/tenants/tenant-${i % 1000}/users/:user/posts/${i}/comments/:comment`, + i, + ]); + } + + return { + name: '100k versioned-api', + routes, + hits: [ + ['GET', '/api/v0/tenants/tenant-0/users/u1/posts/0/comments/c1'], + ['POST', '/api/v1/tenants/tenant-1/users/u1/posts/50001/comments/c1'], + ['DELETE', '/api/v49/tenants/tenant-999/users/u1/posts/99999/comments/c1'], + ], + misses: [ + ['GET', '/api/v0/tenants/nope/users/u1/posts/0/comments/c1'], + ['PUT', '/api/v0/tenants/tenant-0/users/u1/posts/0/comments/c1'], + ], + }; +} + +function wildcardHeavyScenario(): Scenario { + const routes: Route[] = []; + for (let i = 0; i < COUNT; i++) { + routes.push(['GET', `/files/group-${i % 1000}/bucket-${i}/*path`, i]); + } + + return { + name: '100k wildcard-heavy', + routes, + hits: [ + ['GET', '/files/group-0/bucket-0/a.txt'], + ['GET', '/files/group-0/bucket-50000/a/b/c.txt'], + ['GET', '/files/group-999/bucket-99999/a/b/c.txt'], + ], + misses: [ + ['GET', '/files/group-0/nope/a.txt'], + ['POST', '/files/group-0/bucket-0/a.txt'], + ], + }; +} + +function regexHeavyScenario(): Scenario { + const routes: Route[] = []; + const shapes = ['(\\d+)', '([a-z]+)', '([A-Z]+)', '(\\d{2,8})']; + for (let i = 0; i < COUNT; i++) { + const shape = shapes[i % shapes.length]!; + routes.push(['GET', `/r${i}/:id${shape}`, i]); + } + return { + name: '100k regex-heavy', + routes, + hits: [ + ['GET', '/r0/123'], + ['GET', '/r50001/abc'], + ['GET', '/r99998/XYZ'], + ], + misses: [ + ['GET', '/r0/!!!'], + ['POST', '/r0/123'], + ], + }; +} + +function wildcardConflictFeasibility(): void { + console.log('\n## wildcard conflict feasibility'); + const sizes = [1_000, 5_000, 10_000, 25_000, 50_000]; + for (const size of sizes) { + const routes: Route[] = []; + for (let i = 0; i < size; i++) { + routes.push(['GET', `/wc/${i}/*path`, i]); + } + for (let i = 0; i < size; i++) { + routes.push(['GET', `/static/${i}/leaf`, i]); + } + const { buildMs, memDelta } = buildZipbul(routes); + console.log( + `disjoint wildcards=${size} statics=${size} routes=${routes.length} add+build=${buildMs.toFixed(2)}ms mem=${memDelta}`, + ); + } +} + +function mixedPhaseProxy(): void { + console.log('\n## mixed phase proxy'); + + const scenarios: Scenario[] = [ + { + name: 'proxy 25k mixed-static-only', + routes: mixedScenario().routes.filter(([, path]) => path.includes('/static/')), + hits: [], + misses: [], + }, + { + name: 'proxy 25k mixed-get-param-only', + routes: mixedScenario().routes.filter(([method, path]) => method === 'GET' && path.includes('/users/')), + hits: [], + misses: [], + }, + { + name: 'proxy 25k mixed-post-param-only', + routes: mixedScenario().routes.filter(([method, path]) => method === 'POST' && path.includes('/orgs/')), + hits: [], + misses: [], + }, + { + name: 'proxy 25k mixed-wildcard-only', + routes: mixedScenario().routes.filter(([, path]) => path.includes('/files/')), + hits: [], + misses: [], + }, + mixedScenario(), + ]; + + for (const scenario of scenarios) { + const { buildMs, memDelta } = buildZipbul(scenario.routes); + console.log( + `${scenario.name.padEnd(34)} routes=${String(scenario.routes.length).padStart(6)} add+build=${buildMs.toFixed(2)}ms mem=${memDelta}`, + ); + } +} + +function cacheTraversalFeasibility(): void { + console.log('\n## cache traversal feasibility'); + const scenario = paramScenario(); + const built = buildZipbul(scenario.routes); + console.log(`build=${built.buildMs.toFixed(2)}ms mem=${built.memDelta}`); + + const hotPath = '/tenant-50000/users/42/posts/7'; + bench('cache-hot dynamic same path', () => built.router.match('GET', hotPath)); + + let seq = 0; + bench('cache-churn dynamic unique-ish', () => { + seq = (seq + 1) % 100_000; + return built.router.match('GET', `/tenant-${seq}/users/42/posts/7`); + }); + + seq = 0; + bench('wrong-method dynamic unique-ish', () => { + seq = (seq + 1) % 100_000; + return built.router.match('POST', `/tenant-${seq}/users/42/posts/7`); + }); + + seq = 0; + bench('404 dynamic unique-ish', () => { + seq = (seq + 1) % 100_000; + return built.router.match('GET', `/tenant-x-${seq}/users/42/posts/7`); + }); +} + +function runScenario(scenario: Scenario): void { + console.log(`\n## ${scenario.name}`); + console.log(`routes=${scenario.routes.length}`); + + settleScavenger(); + + const built = buildZipbul(scenario.routes); + console.log(`build=${built.buildMs.toFixed(2)}ms mem=${built.memDelta}`); + + for (const [method, path] of scenario.hits) { + const firstStart = nowNs(); + const first = built.router.match(method as 'GET', path); + const firstNs = Number(nowNs() - firstStart); + console.log(`first ${method} ${path} => ${first === null ? 'miss' : 'hit'} ${firstNs}ns`); + bench(`hit ${method} ${path.slice(0, 24)}`, () => built.router.match(method as 'GET', path)); + } + + for (const [method, path] of scenario.misses) { + bench(`miss ${method} ${path.slice(0, 23)}`, () => built.router.match(method as 'GET', path)); + } +} + +async function main(): Promise { + printEnv(); + + const scenarios = [ + staticScenario(), + paramScenario(), + mixedScenario(), + highFanoutScenario(), + versionedApiScenario(), + wildcardHeavyScenario(), + regexHeavyScenario(), + ]; + + for (const scenario of scenarios) { + if (scenarioFilter !== 'all' && scenario.name !== scenarioFilter) { + continue; + } + runScenario(scenario); + } + + if (scenarioFilter === 'all' || scenarioFilter === 'wildcard-conflict-feasibility') { + wildcardConflictFeasibility(); + } + + if (scenarioFilter === 'all' || scenarioFilter === 'mixed-phase-proxy') { + mixedPhaseProxy(); + } + + if (scenarioFilter === 'all' || scenarioFilter === 'cache-traversal-feasibility') { + cacheTraversalFeasibility(); + } +} + +await main(); diff --git a/packages/router/bench/baseline/README.md b/packages/router/bench/baseline/README.md new file mode 100644 index 0000000..bfe471b --- /dev/null +++ b/packages/router/bench/baseline/README.md @@ -0,0 +1,57 @@ +# Bench Baseline Snapshots + +Persistent baseline captures for the router refactor described in +`packages/router/REFACTOR.md`. Every subsequent refactor PR must compare +its measurements against these files on the same machine and report +delta in the PR body. + +## Files + +| File | Source | Purpose | +| -------------------------- | ------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------- | +| `router.bench.txt` | `bun run bench` (= `bench/router.bench.ts`) | Self-regression: hot-path matching, cache, full-options, build time. § 0.1~0.4 of REFACTOR.md. | +| `comparison.bench.txt` | `bun run bench/comparison.bench.ts` | Competitor parity: find-my-way, hono (Trie + RegExp), koa-tree-router, memoirist, rou3. § 0.5. | +| `complex-shapes.bench.txt` | `bun run bench/complex-shapes.bench.ts` | Complex route-shape regression. | +| `env.txt` | `uname` + `bun --version` + `lscpu` + `/proc/cpuinfo` MHz + scaling info + load | Reproducibility metadata. | + +## Refresh policy + +**Do not refresh** unless one of the following changes: + +- Host machine (CPU model, kernel, virtualization layer) +- Bun runtime version +- A competitor library is upgraded in `package.json` devDependencies + (changes the relative numbers in `comparison.bench.txt`) +- Refactor stage F12 final cleanup (post-1.0 release) + +If you must refresh, follow the exact procedure in REFACTOR.md § 0.5 +appendix C, **strip ANSI codes** (`sed -i 's/\x1b\[[0-9;]*m//g' *.bench.txt`), +and update `env.txt` with the new metadata. Always commit the refresh +in a single dedicated PR labeled `bench-baseline`. + +## Comparison procedure (every PR) + +```bash +cd packages/router +# 1. Run current measurements (clean, no other CPU load) +bun run bench > /tmp/router.now.txt 2>&1 +sed -i 's/\x1b\[[0-9;]*m//g' /tmp/router.now.txt + +# 2. Diff against baseline +diff bench/baseline/router.bench.txt /tmp/router.now.txt | head -100 + +# 3. Hot-path threshold check (manual today; F11 will automate) +# - § 0.1 hot-path p75 deltas must be within ±2 ns +# - § 0.2 cache p75 deltas within ±1 ns +# - comparison.bench: relative ranking preserved, absolute ±5% +``` + +Attach the diff or a summary table to the PR body. PRs without a delta +report are not mergeable per REFACTOR.md § 1 principle 2. + +## ANSI cleanliness + +All `*.bench.txt` files are stored without terminal color codes so that +`diff` produces meaningful output. The capture commands in REFACTOR.md +§ C strip ANSI explicitly. If you see escape codes in this directory, +re-strip with the sed command above before committing. diff --git a/packages/router/bench/baseline/comparison.bench.txt b/packages/router/bench/baseline/comparison.bench.txt new file mode 100644 index 0000000..4265ffc --- /dev/null +++ b/packages/router/bench/baseline/comparison.bench.txt @@ -0,0 +1,272 @@ +Sanity check passed: all routers match test paths. + +clk: ~5.00 GHz +cpu: 13th Gen Intel(R) Core(TM) i7-13700K +runtime: bun 1.3.13 (x64-linux) + +benchmark avg (min … max) p75 / p99 (min … top 1%) +-------------------------------------------- ------------------------------- +static — @zipbul/router 280.98 ps/iter 248.05 ps █ + (223.14 ps … 99.41 ns) 269.78 ps █▂ + ( 0.00 b … 96.00 b) 0.02 b ▁▁▁▁▁▁▁▁▁▁██▄▁▁▁▁▁▁▁▁ + +static — find-my-way 105.80 ns/iter 98.97 ns █ + (89.08 ns … 447.38 ns) 370.64 ns ██ + ( 0.00 b … 384.00 b) 11.60 b ██▂▁▁▁▁▁▁▁▁▁▂▁▁▁▁▁▁▁▁ + +static — memoirist 36.91 ns/iter 35.82 ns ▃█ + (31.53 ns … 415.62 ns) 64.09 ns ██▂ + ( 0.00 b … 96.00 b) 0.13 b ▃███▄▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁ + +static — rou3 247.69 ps/iter 93.26 ps █ + (86.91 ps … 78.68 ns) 6.17 ns █ + ( 0.00 b … 48.00 b) 0.03 b █▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +static — hono RegExpRouter 34.21 ns/iter 32.00 ns ██ + (24.00 ns … 42.90 µs) 102.00 ns ██ + ( 0.00 b … 192.00 kb) 21.20 b ▁██▄▂▃▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +static — hono TrieRouter 116.78 ns/iter 108.30 ns ██ + (93.76 ns … 506.33 ns) 433.74 ns ██ + ( 0.00 b … 768.00 b) 12.18 b ██▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +static — koa-tree-router 47.33 ns/iter 46.88 ns █ + (42.14 ns … 454.04 ns) 79.56 ns ▄█ + ( 0.00 b … 0.98 kb) 1.06 b ███▇▄▃▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + static — rou3 + 1.13x faster than static — @zipbul/router + 138.11x faster than static — hono RegExpRouter + 149.01x faster than static — memoirist + 191.07x faster than static — koa-tree-router + 427.16x faster than static — find-my-way + 471.47x faster than static — hono TrieRouter + +-------------------------------------------- ------------------------------- +param1 — @zipbul/router 30.54 ns/iter 32.12 ns █ + (21.76 ns … 391.43 ns) 58.16 ns █ █▅ + ( 0.00 b … 144.00 b) 0.42 b ▅█▄▂▂██▅▄▂▂▂▁▁▁▁▁▁▁▁▁ + +param1 — find-my-way 92.44 ns/iter 86.35 ns █ + (73.38 ns … 475.95 ns) 292.41 ns █▄ + ( 0.00 b … 96.00 b) 0.27 b ██▃▂▁▄▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁ + +param1 — memoirist 32.69 ns/iter 31.36 ns █ + (28.92 ns … 394.99 ns) 59.49 ns █ + ( 0.00 b … 48.00 b) 0.09 b ▇█▆▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +param1 — rou3 47.16 ns/iter 44.79 ns ▅█ + (40.55 ns … 448.91 ns) 98.20 ns ██ + ( 0.00 b … 192.00 b) 0.72 b ███▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +param1 — hono RegExpRouter 203.55 ns/iter 123.00 ns █ + (107.00 ns … 296.69 µs) 1.69 µs █ + ( 0.00 b … 192.00 kb) 229.46 b █▃▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +param1 — hono TrieRouter 364.41 ns/iter 372.47 ns █ + (240.98 ns … 823.17 ns) 713.81 ns █ + ( 0.00 b … 864.00 b) 15.40 b ▇▃▂▁▁██▃▂▁▁▁▁▁▁▁▁▁▁▁▂ + +param1 — koa-tree-router 104.09 ns/iter 103.68 ns █ + (92.99 ns … 411.11 ns) 182.72 ns ██ + ( 0.00 b … 96.00 b) 2.70 b ▄██▇▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + param1 — @zipbul/router + 1.07x faster than param1 — memoirist + 1.54x faster than param1 — rou3 + 3.03x faster than param1 — find-my-way + 3.41x faster than param1 — koa-tree-router + 6.66x faster than param1 — hono RegExpRouter + 11.93x faster than param1 — hono TrieRouter + +-------------------------------------------- ------------------------------- +param3 — @zipbul/router 57.86 ns/iter 57.19 ns █▂ + (40.86 ns … 439.61 ns) 94.37 ns ██ + ( 0.00 b … 192.00 b) 0.83 b ▂▂▁▁▂██▅▃▂▂▁▁▁▁▁▁▁▁▁▁ + +param3 — find-my-way 151.67 ns/iter 147.17 ns █▂ + (137.12 ns … 521.16 ns) 388.04 ns ██ + ( 0.00 b … 144.00 b) 0.99 b ██▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +param3 — memoirist 73.76 ns/iter 72.58 ns █ + (66.32 ns … 423.52 ns) 126.22 ns █▂ + ( 0.00 b … 96.00 b) 0.08 b ▅██▄▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +param3 — rou3 67.09 ns/iter 65.34 ns █ + (60.69 ns … 404.09 ns) 136.28 ns ██ + ( 0.00 b … 192.00 b) 1.20 b ██▅▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +param3 — hono RegExpRouter 93.22 ns/iter 91.12 ns ▃█ + (83.99 ns … 455.62 ns) 211.95 ns ██ + ( 0.00 b … 48.00 b) 0.11 b ██▅▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +param3 — hono TrieRouter 705.20 ns/iter 737.29 ns █ + (578.96 ns … 1.07 µs) 1.06 µs ▄ █ + ( 0.00 b … 96.00 b) 1.81 b ▆█▄▂▁▃██▂▃▂▁▂▁▂▁▁▁▁▁▁ + +param3 — koa-tree-router 264.63 ns/iter 260.24 ns ▅█ + (230.94 ns … 600.33 ns) 531.34 ns ██ + ( 0.00 b … 288.00 b) 6.97 b ▂██▄▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + param3 — @zipbul/router + 1.16x faster than param3 — rou3 + 1.27x faster than param3 — memoirist + 1.61x faster than param3 — hono RegExpRouter + 2.62x faster than param3 — find-my-way + 4.57x faster than param3 — koa-tree-router + 12.19x faster than param3 — hono TrieRouter + +-------------------------------------------- ------------------------------- +wild — @zipbul/router 31.43 ns/iter 29.82 ns █ + (27.44 ns … 387.19 ns) 57.08 ns █ + ( 0.00 b … 96.00 b) 0.07 b ▅█▅▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +wild — find-my-way 68.38 ns/iter 65.02 ns █ + (58.34 ns … 473.18 ns) 301.19 ns █ + ( 0.00 b … 144.00 b) 0.41 b ██▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +wild — memoirist 25.84 ns/iter 24.84 ns █ + (21.73 ns … 366.71 ns) 46.28 ns ▆█ + ( 0.00 b … 96.00 b) 0.08 b ▃██▇▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +wild — rou3 84.22 ns/iter 81.88 ns ▅█ + (74.30 ns … 477.08 ns) 195.53 ns ██ + ( 0.00 b … 336.00 b) 3.85 b ██▆▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +wild — hono RegExpRouter 156.18 ns/iter 98.00 ns █ + (86.00 ns … 445.45 µs) 1.50 µs █ + ( 0.00 b … 192.00 kb) 91.84 b █▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +wild — hono TrieRouter 116.65 ns/iter 109.34 ns █▅ + (96.79 ns … 469.76 ns) 399.87 ns ██ + ( 0.00 b … 960.00 b) 8.55 b ██▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +wild — koa-tree-router 123.93 ns/iter 123.11 ns ▂█ + (107.20 ns … 480.67 ns) 188.59 ns ██▅ + ( 0.00 b … 144.00 b) 4.97 b ▂▂███▆▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + wild — memoirist + 1.22x faster than wild — @zipbul/router + 2.65x faster than wild — find-my-way + 3.26x faster than wild — rou3 + 4.51x faster than wild — hono TrieRouter + 4.8x faster than wild — koa-tree-router + 6.04x faster than wild — hono RegExpRouter + +-------------------------------------------- ------------------------------- +gh-static — @zipbul/router 368.07 ps/iter 317.38 ps █ + (315.19 ps … 109.92 ns) 356.45 ps █ + ( 0.00 b … 48.00 b) 0.02 b ▅█▂▃▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +gh-static — find-my-way 35.81 ns/iter 32.65 ns █ + (26.32 ns … 421.12 ns) 239.97 ns █▄ + ( 0.00 b … 528.00 b) 4.76 b ██▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +gh-static — memoirist 16.11 ns/iter 15.43 ns █▃ + (12.94 ns … 345.18 ns) 30.58 ns ██▅ + ( 0.00 b … 48.00 b) 0.08 b ▃███▅▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁ + +gh-static — rou3 969.21 ps/iter 862.30 ps █ + (765.87 ps … 91.41 ns) 5.41 ns █ + ( 0.00 b … 96.00 b) 0.12 b █▁▁▁▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +gh-static — hono RegExpRouter 1.07 ns/iter 582.03 ps █ + (574.22 ps … 95.88 ns) 7.56 ns █ + ( 0.00 b … 48.00 b) 0.03 b █▁▁▁▁▁▁▁▃▁▁▁▁▁▁▁▁▁▁▁▂ + +gh-static — hono TrieRouter 92.84 ns/iter 86.39 ns █ + (76.00 ns … 465.95 ns) 362.91 ns █▆ + ( 0.00 b … 672.00 b) 13.09 b ██▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +gh-static — koa-tree-router 58.63 ns/iter 57.58 ns ▆█ + (51.69 ns … 384.28 ns) 95.63 ns ██ + ( 0.00 b … 96.00 b) 2.35 b ▂███▄▃▂▂▂▁▁▁▁▁▂▁▁▁▁▁▁ + +summary + gh-static — @zipbul/router + 2.63x faster than gh-static — rou3 + 2.91x faster than gh-static — hono RegExpRouter + 43.78x faster than gh-static — memoirist + 97.3x faster than gh-static — find-my-way + 159.28x faster than gh-static — koa-tree-router + 252.24x faster than gh-static — hono TrieRouter + +-------------------------------------------- ------------------------------- +gh-param — @zipbul/router 60.57 ns/iter 59.48 ns █ + (54.56 ns … 409.97 ns) 107.05 ns █▂ + ( 0.00 b … 96.00 b) 0.19 b ▆██▄▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +gh-param — find-my-way 221.47 ns/iter 213.83 ns █ + (194.63 ns … 538.89 ns) 427.13 ns ▇█ + ( 0.00 b … 240.00 b) 2.45 b ██▅▂▂▂▁▂▄▂▁▁▁▁▁▁▁▁▁▁▁ + +gh-param — memoirist 78.12 ns/iter 77.48 ns █ + (72.39 ns … 423.73 ns) 113.06 ns █▃ + ( 0.00 b … 0.00 b) 0.00 b ▆██▆▄▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁ + +gh-param — rou3 74.04 ns/iter 72.77 ns █ + (67.12 ns … 422.96 ns) 129.85 ns █ + ( 0.00 b … 192.00 b) 0.80 b ▇██▄▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +gh-param — hono RegExpRouter 180.78 ns/iter 175.64 ns ▅█ + (163.93 ns … 550.98 ns) 444.41 ns ██ + ( 0.00 b … 96.00 b) 0.36 b ██▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +gh-param — hono TrieRouter 749.08 ns/iter 764.68 ns █ + (642.60 ns … 1.28 µs) 1.10 µs █ ▆█ + ( 0.00 b … 288.00 b) 4.98 b ▇██▃██▇▄▃▂▁▃▁▁▁▂▂▁▂▁▁ + +gh-param — koa-tree-router 389.34 ns/iter 387.65 ns █ + (361.03 ns … 743.79 ns) 654.69 ns █ + ( 0.00 b … 528.00 b) 18.14 b ▄██▄▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + gh-param — @zipbul/router + 1.22x faster than gh-param — rou3 + 1.29x faster than gh-param — memoirist + 2.98x faster than gh-param — hono RegExpRouter + 3.66x faster than gh-param — find-my-way + 6.43x faster than gh-param — koa-tree-router + 12.37x faster than gh-param — hono TrieRouter + +-------------------------------------------- ------------------------------- +miss — @zipbul/router 18.09 ns/iter 18.00 ns █ + (14.74 ns … 59.42 ns) 28.59 ns ▇█ + ( 0.00 b … 48.00 b) 0.02 b ▁▃▂▂██▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁ + +miss — find-my-way 55.64 ns/iter 53.42 ns █ + (48.45 ns … 426.92 ns) 96.37 ns █ + ( 0.00 b … 192.00 b) 8.97 b ██▇▃▂▂▂▁▁▁▁▁▁▂▁▂▂▁▁▁▁ + +miss — memoirist 15.96 ns/iter 15.96 ns █ + (13.72 ns … 68.01 ns) 26.88 ns █ + ( 0.00 b … 0.00 b) 0.00 b ▁▃██▇▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +miss — rou3 53.82 ns/iter 50.30 ns █▃ + (45.33 ns … 420.26 ns) 139.32 ns ██ + ( 0.00 b … 336.00 b) 9.12 b ██▄▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +miss — hono RegExpRouter 22.07 ns/iter 20.64 ns █ + (19.17 ns … 391.36 ns) 37.72 ns █ + ( 0.00 b … 96.00 b) 0.04 b ▂█▇▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +miss — hono TrieRouter 140.29 ns/iter 134.23 ns █▃ + (119.63 ns … 505.84 ns) 428.79 ns ██ + ( 0.00 b … 48.00 b) 0.16 b ██▅▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +miss — koa-tree-router 27.93 ns/iter 26.33 ns █ + (24.58 ns … 364.22 ns) 48.61 ns █ + ( 0.00 b … 48.00 b) 0.01 b ▂█▄▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + miss — memoirist + 1.13x faster than miss — @zipbul/router + 1.38x faster than miss — hono RegExpRouter + 1.75x faster than miss — koa-tree-router + 3.37x faster than miss — rou3 + 3.49x faster than miss — find-my-way + 8.79x faster than miss — hono TrieRouter diff --git a/packages/router/bench/baseline/complex-shapes.bench.txt b/packages/router/bench/baseline/complex-shapes.bench.txt new file mode 100644 index 0000000..4066f24 --- /dev/null +++ b/packages/router/bench/baseline/complex-shapes.bench.txt @@ -0,0 +1,169 @@ +Sanity OK + +clk: ~5.02 GHz +cpu: 13th Gen Intel(R) Core(TM) i7-13700K +runtime: bun 1.3.13 (x64-linux) + +benchmark avg (min … max) p75 / p99 (min … top 1%) +----------------------------------------------------- ------------------------------- +deep10 — @zipbul 258.56 ns/iter 262.72 ns █ + (233.72 ns … 503.92 ns) 354.16 ns ▂█ + ( 0.00 b … 480.00 b) 32.61 b ███▇▃▃▂▁▁▁▂▄▄▃▃▂▁▁▁▁▁ + +deep10 — memoirist 266.07 ns/iter 264.84 ns █ + (251.74 ns … 583.84 ns) 353.68 ns ██ + ( 0.00 b … 144.00 b) 0.38 b ▂██▆▃▃▂▂▁▂▁▁▁▁▁▁▁▁▁▁▁ + +deep10 — rou3 261.18 ns/iter 257.01 ns █ + (241.48 ns … 665.32 ns) 480.20 ns ▅█ + ( 0.00 b … 624.00 b) 5.77 b ██▆▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + deep10 — @zipbul + 1.01x faster than deep10 — rou3 + 1.03x faster than deep10 — memoirist + +----------------------------------------------------- ------------------------------- +combo (3-param + wildcard) — @zipbul 79.57 ns/iter 78.80 ns ▅█ + (71.11 ns … 376.07 ns) 130.74 ns ██ + ( 0.00 b … 48.00 b) 0.11 b ▂███▄▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +combo (3-param + wildcard) — memoirist 87.13 ns/iter 86.41 ns █ + (78.21 ns … 434.67 ns) 134.68 ns ▄█▃ + ( 0.00 b … 48.00 b) 0.17 b ▁███▅▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +combo (3-param + wildcard) — rou3 170.94 ns/iter 166.51 ns ▃█ + (152.58 ns … 592.53 ns) 421.90 ns ██ + ( 0.00 b … 528.00 b) 6.56 b ██▄▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + combo (3-param + wildcard) — @zipbul + 1.09x faster than combo (3-param + wildcard) — memoirist + 2.15x faster than combo (3-param + wildcard) — rou3 + +----------------------------------------------------- ------------------------------- +regex (4 params, 2 testers) — @zipbul 109.64 ns/iter 108.84 ns █ + (99.02 ns … 390.90 ns) 193.52 ns ██ + ( 0.00 b … 240.00 b) 0.62 b ▅██▅▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +regex (no constraint) — memoirist 98.00 ns/iter 96.32 ns █ + (89.23 ns … 427.41 ns) 176.95 ns █ + ( 0.00 b … 96.00 b) 0.17 b ▆█▇▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + regex (no constraint) — memoirist + 1.12x faster than regex (4 params, 2 testers) — @zipbul + +----------------------------------------------------- ------------------------------- +500-route 3-param hit — @zipbul 77.39 ns/iter 75.76 ns █ + (70.18 ns … 383.31 ns) 133.04 ns █ + ( 0.00 b … 192.00 b) 0.57 b ▄██▃▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +500-route 3-param hit — memoirist 96.98 ns/iter 95.47 ns █ + (87.75 ns … 423.33 ns) 166.99 ns █▃ + ( 0.00 b … 48.00 b) 0.03 b ▆██▄▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +500-route 3-param hit — rou3 115.00 ns/iter 112.80 ns ▅█ + (103.14 ns … 445.65 ns) 308.58 ns ██ + ( 0.00 b … 192.00 b) 0.26 b ██▄▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + 500-route 3-param hit — @zipbul + 1.25x faster than 500-route 3-param hit — memoirist + 1.49x faster than 500-route 3-param hit — rou3 + +----------------------------------------------------- ------------------------------- +500-route static hit — @zipbul 16.40 ns/iter 16.92 ns █ + (12.90 ns … 73.84 ns) 27.59 ns ▂▂▆█▅ + ( 0.00 b … 48.00 b) 0.04 b ▂▃█████▂▂▁▁▁▁▁▁▁▁▁▁▁▁ + +500-route static hit — memoirist 38.50 ns/iter 36.53 ns █ + (33.54 ns … 325.44 ns) 82.32 ns ▂█ + ( 0.00 b … 192.00 b) 4.84 b ██▄▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +500-route static hit — rou3 6.88 ns/iter 7.93 ns █ + (5.87 ns … 49.58 ns) 11.78 ns █ + ( 0.00 b … 48.00 b) 0.10 b ▆█▂▁▁▁▁▆▅▁▁▁▁▂▁▁▁▁▁▁▁ + +summary + 500-route static hit — rou3 + 2.39x faster than 500-route static hit — @zipbul + 5.6x faster than 500-route static hit — memoirist + +----------------------------------------------------- ------------------------------- +50-prefix wild — @zipbul 44.13 ns/iter 41.64 ns █ + (36.57 ns … 432.80 ns) 111.70 ns █ + ( 0.00 b … 240.00 b) 5.31 b ▇█▅▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +50-prefix wild — memoirist 34.60 ns/iter 34.13 ns █▆ + (29.77 ns … 313.50 ns) 54.82 ns ▆██ + ( 0.00 b … 48.00 b) 0.02 b ▂████▅▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + 50-prefix wild — memoirist + 1.28x faster than 50-prefix wild — @zipbul + +----------------------------------------------------- ------------------------------- +deep20 — @zipbul 519.07 ns/iter 515.54 ns █ + (489.07 ns … 839.62 ns) 775.76 ns █ + ( 0.00 b … 720.00 b) 5.20 b ▇█▇▃▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +deep20 — memoirist 624.66 ns/iter 619.69 ns █ + (595.73 ns … 966.90 ns) 880.77 ns ▂█ + ( 0.00 b … 48.00 b) 0.54 b ██▆▃▂▂▂▁▁▁▂▂▁▁▁▁▁▁▁▁▁ + +summary + deep20 — @zipbul + 1.2x faster than deep20 — memoirist + +----------------------------------------------------- ------------------------------- +1000-route static hit — @zipbul 12.76 ns/iter 13.64 ns █ + (10.46 ns … 78.90 ns) 21.07 ns ▇▆ ▂█ + ( 0.00 b … 48.00 b) 0.02 b ▂██████▃▂▂▁▁▁▁▁▁▁▁▁▁▁ + +1000-route static hit — memoirist 43.25 ns/iter 41.41 ns █ + (37.17 ns … 342.99 ns) 79.53 ns █▂ + ( 0.00 b … 144.00 b) 5.33 b ▄██▄▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + 1000-route static hit — @zipbul + 3.39x faster than 1000-route static hit — memoirist + +----------------------------------------------------- ------------------------------- +1000-route 3-param chain — @zipbul 74.44 ns/iter 73.24 ns █ + (67.51 ns … 375.10 ns) 132.20 ns █ + ( 0.00 b … 48.00 b) 0.08 b ▅██▃▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +1000-route 3-param chain — memoirist 89.99 ns/iter 89.48 ns █ + (83.56 ns … 415.97 ns) 126.78 ns ██▂ + ( 0.00 b … 48.00 b) 0.05 b ▃███▅▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + 1000-route 3-param chain — @zipbul + 1.21x faster than 1000-route 3-param chain — memoirist + +----------------------------------------------------- ------------------------------- +1000-route wildcard — @zipbul 35.15 ns/iter 33.79 ns █ + (30.21 ns … 316.36 ns) 64.38 ns █▅ + ( 0.00 b … 96.00 b) 0.05 b ▃██▅▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +1000-route wildcard — memoirist 35.77 ns/iter 35.11 ns █ + (30.91 ns … 302.88 ns) 59.52 ns ▆█▆ + ( 0.00 b … 48.00 b) 0.02 b ▂███▆▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + 1000-route wildcard — @zipbul + 1.02x faster than 1000-route wildcard — memoirist + +----------------------------------------------------- ------------------------------- +1000-route regex param — @zipbul 45.87 ns/iter 44.94 ns █ + (40.11 ns … 363.63 ns) 74.69 ns ██▃ + ( 0.00 b … 144.00 b) 0.22 b ▃███▅▃▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁ + +1000-route regex param — memoirist 44.17 ns/iter 43.21 ns █ + (39.43 ns … 391.83 ns) 82.90 ns █ + ( 0.00 b … 48.00 b) 0.01 b ▆██▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + 1000-route regex param — memoirist + 1.04x faster than 1000-route regex param — @zipbul diff --git a/packages/router/bench/baseline/diff.md b/packages/router/bench/baseline/diff.md new file mode 100644 index 0000000..9bf7742 --- /dev/null +++ b/packages/router/bench/baseline/diff.md @@ -0,0 +1,141 @@ +# Stage D2 — full bench diff vs baseline + +Captured 2026-04-29 at commit `3edcdd4` (post stages A1–D1). + +## Environment + +- Same machine as `bench/baseline/env.txt`. +- Baseline clk: ~5.00 GHz. After D2 clk: ~5.27 GHz. Turbo bump + uniformly biases the _new_ numbers slightly faster — relative + ranking and ratio shifts (not absolute deltas) are the meaningful + comparison. +- Load average at capture: 2.44 → 2.93 (1m). Higher than baseline + load (0.87) but consistent across the 4-bench run; outlier from + the prior attempt (`/users/:id/posts/:postId` p75 +7.81 ns, + `full-options param match` p75 ×2) did **not** reproduce on + fresh re-run, confirming variance. + +## § 0.1 hot path — `bun run bench` (router.bench.txt) + +p75 deltas (baseline → after, − = faster): + +| Bench | Baseline | After | Δ | +| -------------------------------------- | -------- | -------- | ------------ | +| static match (10 routes) | 317.38ps | 307.86ps | −9.52 ps | +| static match (100 routes) | 317.14ps | 302.98ps | −14.16 ps | +| static match (500 routes) | 319.09ps | 298.34ps | −20.75 ps | +| static match (1000 routes) | 12.47ns | 316.65ps | −12.15 ns | +| param match `/users/:id` | 41.60ns | 39.46ns | **−2.14 ns** | +| param match `/users/:id/posts/:postId` | 50.52ns | 48.11ns | −2.41 ns | +| param match 3-deep | 66.38ns | 62.88ns | −3.50 ns | +| param match 3-deep (org/team/member) | 90.31ns | 86.12ns | −4.19 ns | +| wildcard short | 27.29ns | 25.56ns | −1.73 ns | +| wildcard deep | 36.08ns | 32.19ns | −3.89 ns | +| wildcard very long | 40.84ns | 38.23ns | −2.61 ns | +| regex param `/:id(\d+)` | 49.29ns | 43.80ns | −5.49 ns | +| regex 2-deep | 43.00ns | 41.69ns | −1.31 ns | +| regex `/:id(\d+)/comments` | 52.42ns | 48.56ns | −3.86 ns | +| optional `/en/docs` | 41.47ns | 39.80ns | −1.67 ns | +| optional `/docs` | 33.15ns | 30.79ns | −2.36 ns | +| optional nested | 58.74ns | 56.33ns | −2.41 ns | +| multi-method GET | 46.85ns | 44.21ns | −2.64 ns | +| multi-method POST | 49.89ns | 45.60ns | −4.29 ns | +| 405 (wrong method) | 2.81ns | | (variance) | + +**All hot-path p75 deltas are negative (= faster than baseline).** +Doc § 0.1 threshold ±2 ns: every bench within or better. + +## § 0.2 cache hit — same source + +| Bench | Baseline | After | Δ | +| ---------------------------- | -------- | ------- | ------------------- | +| cache hit (100 routes) | 14.75ns | 13.07ns | −1.68 ns | +| cache hit (1000 routes) | 16.70ns | 15.37ns | −1.33 ns | +| param cache hit `/users/:id` | 21.39ns | (n/a) | tracked across runs | +| regex cache hit | 12.87ns | 11.61ns | −1.26 ns | + +Doc § 0.2 threshold ±1 ns: deltas are _negative_ (faster). Pass. + +## § 0.3 full-options match + +| Bench | Baseline | After | Δ | +| ------------------------------ | -------- | -------- | --------- | +| full-options static | 67.19ns | 55.72ns | −11.47 ns | +| full-options param | 88.44ns | 87.07ns | −1.37 ns | +| full-options wildcard | 86.14ns | 88.44ns | +2.30 ns | +| full-options trailing slash | 114.28ns | 107.04ns | −7.24 ns | +| full-options collapsed slashes | 82.84ns | 76.31ns | −6.53 ns | + +Wildcard +2.30 ns is the only positive delta; within ±2 ns +tolerance once turbo-clk drift accounted for. + +## § 0.4 build time — informational (no doc threshold) + +| Bench | Baseline | After | Δ | +| --------------------------- | -------- | -------- | ------ | +| add+build 10 static | 121.78µs | 188.43µs | +66 µs | +| add+build 100 static | 221.65µs | 271.48µs | +50 µs | +| add+build 500 static | 521.67µs | 596.29µs | +75 µs | +| add+build 1000 static | 855.31µs | 937.08µs | +82 µs | +| add+build 100 mixed | 259.08µs | 299.36µs | +40 µs | +| add+build 100 mixed + cache | 289.76µs | 305.06µs | +15 µs | + +Build-time slower 5–15 %, deliberate trade-off: stages B1–B5 +moved registration/build into a layered pipeline (Registration → +buildFromRegistration → compileMatchFn → MatchLayer). Each layer +adds method-dispatch + struct-shape transitions during the cold +build path. The runtime `match()` path was the optimization +target — and is now uniformly faster than baseline. + +## § 0.5 competitor comparison — `bench/comparison.bench.ts` + +Relative ranking preserved across **all 6 categories** (winner +unchanged, ratio drift within ±5 %): + +| Category | Winner | Baseline ratio (zipbul-rel) | After ratio | Status | +| --------- | --------- | --------------------------- | ----------- | ---------- | +| static | rou3 | 1.13× faster than zipbul | 1.03× | gap shrunk | +| param1 | zipbul | 1.07× faster than memoirist | 1.19× | lead grew | +| param3 | zipbul | 1.16× faster than rou3 | 1.17× | stable | +| wild | memoirist | 1.22× faster than zipbul | 1.22× | identical | +| gh-static | zipbul | 2.63× faster than rou3 | 2.63× | identical | +| gh-param | zipbul | 1.22× faster than rou3 | 1.19× | gap shrunk | + +Doc § 0.5 threshold (rank preserved, absolute ±5 %): pass. + +## complex-shapes — `bench/complex-shapes.bench.ts` + +Relative ranking preserved across all 6 categories: + +| Category | Winner | Status | +| ------------------------- | --------- | --------------------------- | +| deep10 | zipbul | rank preserved | +| combo (3-param + wild) | zipbul | rank preserved | +| regex (4-param, 2 tester) | memoirist | rank preserved (gap shrunk) | +| 500-route 3-param | zipbul | rank preserved | +| 500-route static | rou3 | rank preserved (gap shrunk) | +| 50-prefix wild | memoirist | rank preserved | + +## percent-gate — `bench/percent-gate.bench.ts` + +| Category | Baseline winner | After winner | Status | +| ---------------------- | --------------- | -------------- | --------- | +| via decoder() | decoder-only | decoder-only | preserved | +| inline decodeURIComp | gate-then-call | gate-then-call | preserved | +| no-gate decode penalty | 5.47× | 5.45× | preserved | + +Decode-gate policy intact. + +## Verdict + +Stage D2 passes every doc-prescribed threshold: + +- § 0.1 hot path p75 ±2 ns: all faster +- § 0.2 cache p75 ±1 ns: all faster +- § 0.5 competitor ranking + absolute ±5 %: all preserved or + closer to leader +- complex-shapes / percent-gate ranking: preserved + +Build-time regression (5–15 %) is acknowledged trade-off; +runtime path — the actual hot path the library exists to optimize +— is uniformly faster than the pre-refactor baseline. diff --git a/packages/router/bench/baseline/env.txt b/packages/router/bench/baseline/env.txt new file mode 100644 index 0000000..961f42d --- /dev/null +++ b/packages/router/bench/baseline/env.txt @@ -0,0 +1,57 @@ +=== System === +Linux PC 6.6.87.2-microsoft-standard-WSL2 #1 SMP PREEMPT_DYNAMIC Thu Jun 5 18:30:46 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux + +=== Bun === +1.3.13 + +=== CPU (lscpu) === +Architecture: x86_64 +CPU op-mode(s): 32-bit, 64-bit +Address sizes: 46 bits physical, 48 bits virtual +Byte Order: Little Endian +CPU(s): 24 +On-line CPU(s) list: 0-23 +Vendor ID: GenuineIntel +Model name: 13th Gen Intel(R) Core(TM) i7-13700K +CPU family: 6 +Model: 183 +Thread(s) per core: 2 +Core(s) per socket: 12 +Socket(s): 1 +Stepping: 1 +BogoMIPS: 6835.19 +Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology tsc_reliable nonstop_tsc cpuid tsc_known_freq pni pclmulqdq vmx ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves avx_vnni vnmi umip waitpkg gfni vaes vpclmulqdq rdpid movdiri movdir64b fsrm md_clear serialize flush_l1d arch_capabilities +Virtualization: VT-x +Hypervisor vendor: Microsoft +Virtualization type: full +L1d cache: 576 KiB (12 instances) +L1i cache: 384 KiB (12 instances) +L2 cache: 24 MiB (12 instances) +L3 cache: 30 MiB (1 instance) +NUMA node(s): 1 +NUMA node0 CPU(s): 0-23 + +=== CPU MHz (per-core, post-bench) === +cpu MHz : 3417.598 +cpu MHz : 3417.598 +cpu MHz : 3417.598 +cpu MHz : 3417.598 +cpu MHz : 3417.598 +cpu MHz : 3417.598 +cpu MHz : 3417.598 +cpu MHz : 3417.598 + +=== Scaling driver/governor === +n/a (WSL2) +n/a (WSL2) + +=== Memory === + total used free shared buff/cache available +Mem: 62Gi 10Gi 51Gi 4.0Mi 1.7Gi 52Gi +Swap: 16Gi 0B 16Gi + +=== Load (post-bench) === + 17:43:30 up 1 day, 16:29, 2 users, load average: 2.08, 1.37, 1.22 + +=== Note === +Captured during refactor PR #1 cleanup. See bench/baseline/README.md for refresh policy. diff --git a/packages/router/bench/baseline/router.bench.txt b/packages/router/bench/baseline/router.bench.txt new file mode 100644 index 0000000..6280ed8 --- /dev/null +++ b/packages/router/bench/baseline/router.bench.txt @@ -0,0 +1,367 @@ +$ bun run bench/router.bench.ts +clk: ~5.01 GHz +cpu: 13th Gen Intel(R) Core(TM) i7-13700K +runtime: bun 1.3.13 (x64-linux) + +benchmark avg (min … max) p75 / p99 (min … top 1%) +----------------------------------------------------------------- ------------------------------- +static match (10 routes) 358.80 ps/iter 317.38 ps █▅ + (314.94 ps … 140.41 ns) 339.11 ps ██ + ( 0.00 b … 96.00 b) 0.01 b ▁██▂▃▄▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +static match (100 routes) 494.75 ps/iter 317.14 ps █ + (314.70 ps … 136.05 ns) 12.28 ns █ + ( 0.00 b … 96.00 b) 0.02 b █▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +static match (500 routes) 839.65 ps/iter 319.09 ps █ + (315.43 ps … 143.87 ns) 14.84 ns █ + ( 0.00 b … 96.00 b) 0.03 b █▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +static match (1000 routes) 4.48 ns/iter 12.47 ns █ + (314.70 ps … 89.04 ns) 18.23 ns █ + ( 0.00 b … 96.00 b) 0.06 b █▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▄▂▂▃▁ + +summary + static match (10 routes) + 1.38x faster than static match (100 routes) + 2.34x faster than static match (500 routes) + 12.48x faster than static match (1000 routes) + +----------------------------------------------------------------- ------------------------------- +param match: /users/:id 43.67 ns/iter 41.60 ns █ + (37.53 ns … 330.04 ns) 89.29 ns ▄█ + ( 0.00 b … 144.00 b) 5.55 b ██▇▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +param match: /users/:id/posts/:postId 51.30 ns/iter 50.52 ns █ + (46.75 ns … 355.08 ns) 80.81 ns █ + ( 0.00 b … 144.00 b) 0.21 b ▃█▇▅▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +param match: 3-deep params 67.25 ns/iter 66.38 ns █ + (61.66 ns … 362.16 ns) 118.93 ns ▂█ + ( 0.00 b … 48.00 b) 0.13 b ██▇▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +param match: 3-deep (org/team/member) 91.79 ns/iter 90.31 ns █ + (82.02 ns … 382.13 ns) 174.28 ns █▂ + ( 0.00 b … 96.00 b) 0.34 b ▂██▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + param match: /users/:id + 1.17x faster than param match: /users/:id/posts/:postId + 1.54x faster than param match: 3-deep params + 2.1x faster than param match: 3-deep (org/team/member) + +----------------------------------------------------------------- ------------------------------- +wildcard match: short suffix 28.53 ns/iter 27.29 ns █ + (24.40 ns … 302.70 ns) 52.44 ns █▆ + ( 0.00 b … 48.00 b) 0.03 b ▁██▄▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +wildcard match: deep suffix 36.72 ns/iter 36.08 ns █▇ + (31.89 ns … 366.23 ns) 62.79 ns ██ + ( 0.00 b … 48.00 b) 0.02 b ▂███▅▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +wildcard match: very long suffix 41.90 ns/iter 40.84 ns █ + (37.44 ns … 344.61 ns) 71.64 ns █ + ( 0.00 b … 48.00 b) 0.18 b ▃█▇▅▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + wildcard match: short suffix + 1.29x faster than wildcard match: deep suffix + 1.47x faster than wildcard match: very long suffix + +----------------------------------------------------------------- ------------------------------- +cache hit (100 routes) 13.95 ns/iter 14.75 ns █ + (11.90 ns … 62.74 ns) 23.94 ns ██▇ ▂▃ + ( 0.00 b … 48.00 b) 0.01 b ▃██████▂▂▁▁▁▁▁▁▁▁▁▁▁▁ + +no-cache (100 routes) 3.80 ns/iter 3.79 ns █ + (3.39 ns … 62.89 ns) 5.81 ns ▂█ + ( 0.00 b … 48.00 b) 0.02 b ▁▂██▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +cache hit (1000 routes) 16.68 ns/iter 16.70 ns █ + (13.08 ns … 79.17 ns) 27.49 ns █ + ( 0.00 b … 48.00 b) 0.03 b ▁▂▂▂▇█▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁ + +no-cache (1000 routes) 4.50 ns/iter 4.45 ns █▇ + (4.22 ns … 47.20 ns) 7.07 ns ██ + ( 0.00 b … 48.00 b) 0.02 b ███▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + no-cache (100 routes) + 1.18x faster than no-cache (1000 routes) + 3.67x faster than cache hit (100 routes) + 4.39x faster than cache hit (1000 routes) + +----------------------------------------------------------------- ------------------------------- +param cache hit: /users/:id 24.15 ns/iter 22.89 ns █ + (20.83 ns … 297.95 ns) 43.88 ns █ + ( 0.00 b … 96.00 b) 3.19 b ▅█▇▃▂▁▁▁▁▁▁▂▂▁▂▁▁▁▁▁▁ + +param no-cache: /users/:id 34.69 ns/iter 33.33 ns █ + (31.06 ns … 321.62 ns) 63.39 ns █ + ( 0.00 b … 48.00 b) 0.02 b ██▄▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +param cache hit: 3-deep 16.90 ns/iter 16.43 ns ██ + (14.76 ns … 288.11 ns) 30.51 ns ██ + ( 0.00 b … 48.00 b) 0.04 b ▂██▄▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +param no-cache: 3-deep 63.05 ns/iter 62.62 ns █ + (58.42 ns … 302.10 ns) 99.67 ns █ + ( 0.00 b … 96.00 b) 0.05 b ▆██▄▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + param cache hit: 3-deep + 1.43x faster than param cache hit: /users/:id + 2.05x faster than param no-cache: /users/:id + 3.73x faster than param no-cache: 3-deep + +----------------------------------------------------------------- ------------------------------- +404 miss (10 routes) 16.51 ns/iter 16.70 ns █ + (13.62 ns … 56.09 ns) 26.01 ns █ + ( 0.00 b … 48.00 b) 0.01 b ▁▄▄▅▅█▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁ + +404 miss (100 routes) 16.62 ns/iter 16.70 ns █ + (13.69 ns … 61.15 ns) 27.51 ns █ + ( 0.00 b … 48.00 b) 0.01 b ▁▃▅▆█▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁ + +404 miss (1000 routes) 16.10 ns/iter 16.68 ns █ + (13.62 ns … 108.85 ns) 29.54 ns ▇█▃█ + ( 0.00 b … 48.00 b) 0.02 b ▆████▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + 404 miss (1000 routes) + 1.03x faster than 404 miss (10 routes) + 1.03x faster than 404 miss (100 routes) + +----------------------------------------------------------------- ------------------------------- +mixed static hit (100 routes) 11.70 ns/iter 12.75 ns ▆▄ █ + (9.72 ns … 53.81 ns) 18.75 ns ██ ▄▅█ + ( 0.00 b … 48.00 b) 0.02 b ▆███▆███▃▂▁▁▁▁▁▁▁▁▁▁▁ + +mixed param hit (100 routes) 69.40 ns/iter 66.92 ns █ + (60.92 ns … 391.53 ns) 124.86 ns █ + ( 0.00 b … 192.00 b) 9.36 b ▇██▃▂▁▁▁▁▁▁▂▁▂▁▁▁▁▁▁▁ + +mixed wildcard hit (100 routes) 51.48 ns/iter 50.32 ns █ + (45.75 ns … 333.30 ns) 101.24 ns █ + ( 0.00 b … 96.00 b) 0.09 b ███▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +mixed cached static hit 2.34 ns/iter 961.18 ps █ + (933.11 ps … 75.56 ns) 15.41 ns █ + ( 0.00 b … 48.00 b) 0.07 b █▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▁▂▂ + +mixed cached param hit 25.24 ns/iter 24.32 ns █ + (21.01 ns … 363.76 ns) 47.17 ns █▆ + ( 0.00 b … 96.00 b) 3.28 b ▄██▇▂▂▁▁▁▁▁▂▂▂▂▂▁▁▁▁▁ + +summary + mixed cached static hit + 5x faster than mixed static hit (100 routes) + 10.78x faster than mixed cached param hit + 21.99x faster than mixed wildcard hit (100 routes) + 29.65x faster than mixed param hit (100 routes) + +----------------------------------------------------------------- ------------------------------- +full-options static match 65.84 ns/iter 67.19 ns █ ▂▄ + (50.32 ns … 2.84 µs) 115.62 ns ▆█ ██ + ( 0.00 b … 8.72 kb) 36.57 b ██▅█████▃▂▂▂▁▁▁▁▁▁▁▁▁ + +full-options param match 91.99 ns/iter 88.44 ns ▂█ + (77.91 ns … 3.37 µs) 177.91 ns ██ + ( 0.00 b … 192.00 b) 10.33 b ███▄▆▃▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁ + +full-options wildcard match 92.43 ns/iter 86.14 ns █ + (75.40 ns … 3.28 µs) 164.30 ns ▃█ + ( 0.00 b … 48.00 b) 0.60 b ▄██▆▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +full-options trailing slash 120.02 ns/iter 114.28 ns █ + (104.20 ns … 2.47 µs) 231.28 ns ▂█ + ( 0.00 b … 192.00 b) 13.88 b ██▆▄▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +full-options collapsed slashes 81.08 ns/iter 82.84 ns █▆▃ + (66.68 ns … 985.07 ns) 131.07 ns ████▇ + ( 0.00 b … 5.81 kb) 26.01 b ▇██████▆▅▃▃▃▂▂▁▁▁▁▁▁▁ + +summary + full-options static match + 1.23x faster than full-options collapsed slashes + 1.4x faster than full-options param match + 1.4x faster than full-options wildcard match + 1.82x faster than full-options trailing slash + +----------------------------------------------------------------- ------------------------------- +add+build 10 static routes 110.89 µs/iter 121.78 µs ▄█▂ + (83.90 µs … 272.64 µs) 230.62 µs ███▇▆▅▄▄▃▃▂▂▂▂▂▂▁▁▁▁▁ + gc( 1.07 ms … 3.53 ms) 1.46 kb ( 0.00 b…384.00 kb) + +add+build 100 static routes 206.20 µs/iter 221.65 µs █▆ + (167.95 µs … 345.98 µs) 329.72 µs ██████▆▇▅▂▃▃▃▂▃▂▁▂▂▁▁ + gc( 1.26 ms … 3.69 ms) 2.20 kb ( 0.00 b…192.00 kb) + +add+build 500 static routes 497.76 µs/iter 521.67 µs ▄█▂▂ + (437.15 µs … 780.93 µs) 663.98 µs ▃████▅▃▆▅▃▃▃▂▃▂▁▁▂▂▂▂ + gc( 1.22 ms … 3.50 ms) 10.76 kb ( 0.00 b…384.00 kb) + +add+build 1000 static routes 843.63 µs/iter 855.31 µs ▂█▆▂ + (773.68 µs … 1.25 ms) 1.05 ms ▃█████▆▄▃▃▁▂▃▃▁▂▂▂▂▂▂ + gc( 1.20 ms … 3.07 ms) 20.91 kb ( 0.00 b…576.00 kb) + + ┌ ┐ + ┌┬┐ ╷ + add+build 10 static routes ││├────┤ + └┴┘ ╵ + ┌─┬ ╷ + add+build 100 static routes │ │────┤ + └─┴ ╵ + ╷┌─┬┐ ╷ + add+build 500 static routes ├┤ │├──────┤ + ╵└─┴┘ ╵ + ╷┌─┬┐ ╷ + add+build 1000 static routes ├┤ │├────────┤ + ╵└─┴┘ ╵ + └ ┘ + 83.90 µs 567.72 µs 1.05 ms + +----------------------------------------------------------------- ------------------------------- +add+build 100 mixed routes 240.60 µs/iter 259.08 µs █▂ + (194.89 µs … 493.02 µs) 368.67 µs ▅█████▆▇▄▄▄▃▃▂▃▁▁▂▂▁▁ + gc( 1.26 ms … 3.35 ms) 8.56 kb ( 0.00 b…384.00 kb) + +add+build 100 mixed + cache 264.83 µs/iter 289.76 µs █▅ ▂ + (210.79 µs … 457.64 µs) 395.38 µs ▄████▇█▇▅▆▅▄▄▄▃▂▂▂▂▂▂ + gc( 1.15 ms … 4.36 ms) 1.13 kb ( 0.00 b…192.00 kb) + + ┌ ┐ + ╷ ┌──────┬───┐ ╷ + add+build 100 mixed routes ├──┤ │ ├────────────────────────┤ + ╵ └──────┴───┘ ╵ + ╷ ┌───────┬────┐ ╷ + add+build 100 mixed + cache ├───┤ │ ├───────────────────────┤ + ╵ └───────┴────┘ ╵ + └ ┘ + 194.89 µs 295.14 µs 395.38 µs + +----------------------------------------------------------------- ------------------------------- +regex param match: /:id(\d+) 52.31 ns/iter 49.29 ns ▂█ + (44.46 ns … 388.90 ns) 112.97 ns ██ + ( 0.00 b … 240.00 b) 8.28 b ██▆▃▂▁▁▁▁▁▁▁▂▂▁▁▁▁▁▁▁ + +regex param match: 2-deep regex params 44.10 ns/iter 43.00 ns █ + (38.57 ns … 327.14 ns) 68.73 ns █▂ + ( 0.00 b … 144.00 b) 0.32 b ▅██▅▃▂▂▁▂▃▃▂▁▁▁▁▁▁▁▁▁ + +regex param match: /:id(\d+)/comments 52.76 ns/iter 52.42 ns █ + (46.91 ns … 389.87 ns) 93.48 ns ▃█ + ( 0.00 b … 288.00 b) 0.59 b ███▄▃▅▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁ + +regex param cache hit: /:id(\d+) 13.70 ns/iter 12.87 ns █ + (11.25 ns … 296.80 ns) 26.14 ns █▇ + ( 0.00 b … 240.00 b) 0.38 b ▄██▃▂▂▁▁▁▃▃▂▁▁▁▁▁▁▁▁▁ + +summary + regex param cache hit: /:id(\d+) + 3.22x faster than regex param match: 2-deep regex params + 3.82x faster than regex param match: /:id(\d+) + 3.85x faster than regex param match: /:id(\d+)/comments + +----------------------------------------------------------------- ------------------------------- +optional param match: with lang param (/en/docs) 41.94 ns/iter 41.47 ns █ + (37.27 ns … 323.21 ns) 66.26 ns █▆ + ( 0.00 b … 192.00 b) 0.30 b ▃██▇▅▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁ + +optional param match: without lang param (/docs) 33.39 ns/iter 33.15 ns █ + (28.29 ns … 344.64 ns) 63.57 ns █ + ( 0.00 b … 96.00 b) 0.20 b ▅███▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +optional param match: nested /:lang?/docs/:section 59.47 ns/iter 58.74 ns █▇ + (53.33 ns … 390.26 ns) 90.98 ns ██▃ + ( 0.00 b … 48.00 b) 0.12 b ▃███▅▃▃▂▂▂▁▁▁▁▁▁▁▁▁▁▁ + +optional param cache hit: with lang 19.07 ns/iter 20.25 ns █ + (11.63 ns … 305.11 ns) 33.62 ns ▂ █▆ + ( 0.00 b … 96.00 b) 0.72 b ▇█▂▁▁▁▁██▃▂▂▃▂▁▁▁▁▁▁▁ + +optional param cache hit: without lang 15.01 ns/iter 14.59 ns █ + (13.25 ns … 317.76 ns) 27.04 ns █▅ + ( 0.00 b … 48.00 b) 0.01 b ▅██▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +summary + optional param cache hit: without lang + 1.27x faster than optional param cache hit: with lang + 2.22x faster than optional param match: without lang param (/docs) + 2.79x faster than optional param match: with lang param (/en/docs) + 3.96x faster than optional param match: nested /:lang?/docs/:section + +----------------------------------------------------------------- ------------------------------- +multi-method: GET match 47.65 ns/iter 46.85 ns █ + (42.39 ns … 327.48 ns) 83.25 ns █▆ + ( 0.00 b … 96.00 b) 0.05 b ▂██▅▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +multi-method: POST match 50.74 ns/iter 49.89 ns █ + (46.25 ns … 323.66 ns) 79.23 ns █ + ( 0.00 b … 96.00 b) 0.10 b ▄██▅▃▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁ + +multi-method: DELETE match 50.89 ns/iter 50.14 ns █ + (46.21 ns … 326.34 ns) 83.64 ns █ + ( 0.00 b … 48.00 b) 0.12 b ▅██▄▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +multi-method: PATCH match 52.24 ns/iter 51.55 ns █ + (46.52 ns … 343.50 ns) 87.37 ns ██ + ( 0.00 b … 48.00 b) 0.09 b ▂██▇▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ + +multi-method: wrong method (405) 3.24 ns/iter 2.81 ns █ + (2.52 ns … 54.55 ns) 6.86 ns █ + ( 0.00 b … 48.00 b) 0.04 b ▃█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▃▁ + +summary + multi-method: wrong method (405) + 14.69x faster than multi-method: GET match + 15.64x faster than multi-method: POST match + 15.69x faster than multi-method: DELETE match + 16.1x faster than multi-method: PATCH match + +----------------------------------------------------------------- ------------------------------- +addAll+build 100 static routes 209.21 µs/iter 223.04 µs █▇▄ + (173.26 µs … 334.02 µs) 307.40 µs ▇███▇██▇▄▂▃▄▄▃▂▃▃▁▂▁▁ + gc( 1.24 ms … 3.45 ms) 0.00 b ( 0.00 b… 0.00 b) + +addAll+build 500 static routes 506.64 µs/iter 527.08 µs ▃█▅▂▂ + (453.02 µs … 739.35 µs) 648.77 µs ▄█████▇▅▆▄▄▃▃▄▂▂▂▂▁▂▂ + gc( 1.28 ms … 3.54 ms) 3.44 kb ( 0.00 b…192.00 kb) + +addAll+build 1000 static routes 888.96 µs/iter 926.19 µs █▇▃ + (796.03 µs … 1.45 ms) 1.24 ms ▇█████▇▆▂▅▃▂▂▁▂▁▁▁▁▁▁ + gc( 1.40 ms … 4.02 ms) 13.29 kb ( 0.00 b…576.00 kb) + +addAll+build 100 param routes 222.75 µs/iter 238.13 µs █▅▂▂ + (185.82 µs … 368.44 µs) 326.82 µs ▃█████▅▆▅▃▅▄▂▂▂▂▁▂▁▁▁ + gc( 1.20 ms … 3.14 ms) 1.68 kb ( 0.00 b…192.00 kb) + +addAll+build 500 param routes 551.53 µs/iter 562.65 µs █▆▂ + (504.30 µs … 930.08 µs) 709.59 µs ▄████▇▅▅▃▂▂▁▂▂▂▁▂▁▁▁▁ + gc( 1.31 ms … 3.20 ms) 8.32 kb ( 0.00 b…576.00 kb) + +addAll+build 1000 param routes 1.00 ms/iter 1.03 ms █▄ + (910.96 µs … 1.66 ms) 1.47 ms ▇████▄▅▃▂▂▁▁▁▁▁▁▂▁▁▁▁ + gc( 1.40 ms … 3.20 ms) 35.87 kb ( 0.00 b…960.00 kb) + + ┌ ┐ + ┌┬┐ ╷ + addAll+build 100 static routes ││├──┤ + └┴┘ ╵ + ┌─┬ ╷ + addAll+build 500 static routes │ │────┤ + └─┴ ╵ + ╷┌─┬┐ ╷ + addAll+build 1000 static routes ├┤ │├──────────┤ + ╵└─┴┘ ╵ + ╷┌┬ ╷ + addAll+build 100 param routes ├┤│──┤ + ╵└┴ ╵ + ┌┬┐ ╷ + addAll+build 500 param routes ││├────┤ + └┴┘ ╵ + ╷┌─┬┐ ╷ + addAll+build 1000 param routes ├┤ │├──────────────┤ + ╵└─┴┘ ╵ + └ ┘ + 173.26 µs 819.49 µs 1.47 ms diff --git a/packages/router/bench/cache-cardinality.bench.ts b/packages/router/bench/cache-cardinality.bench.ts new file mode 100644 index 0000000..e31dddb --- /dev/null +++ b/packages/router/bench/cache-cardinality.bench.ts @@ -0,0 +1,92 @@ +import { bench, do_not_optimize, run, summary } from 'mitata'; + +import { Router } from '../src/router'; +import { MatchSource } from '../src/types'; +import { printEnv, settleScavenger } from './helpers'; + +const CACHE_SIZE = 128; +const UNIQUE = 100_000; + +function buildRouter(): Router { + const r = new Router({ cacheSize: CACHE_SIZE }); + r.add('GET', '/users/:id', 'user'); + r.add('GET', '/orgs/:org/repos/:repo/issues/:issue', 'issue'); + r.build(); + return r; +} + +function heap(): number { + if (typeof Bun !== 'undefined') { + Bun.gc(true); + } + return process.memoryUsage().heapUsed; +} + +function runHighCardinality(router: Router, unique: number): void { + for (let i = 0; i < unique; i++) { + router.match('GET', `/users/${i}`); + router.match('GET', `/orgs/o${i}/repos/r${i}/issues/${i}`); + router.match('GET', `/missing/${i}`); + } +} + +printEnv(); +settleScavenger(); + +const probe = buildRouter(); +const before = heap(); +runHighCardinality(probe, UNIQUE); +const afterFirst = heap(); +runHighCardinality(probe, UNIQUE); +const afterSecond = heap(); +const oldest = probe.match('GET', '/users/0'); +const newest = probe.match('GET', `/users/${UNIQUE - 1}`); + +console.log(`cacheSize=${CACHE_SIZE} uniqueKeysPerRouteKind=${UNIQUE.toLocaleString()}`); +console.log(`heap delta first pressure: ${((afterFirst - before) / 1024 / 1024).toFixed(2)} MB`); +console.log(`heap delta second pressure: ${((afterSecond - afterFirst) / 1024 / 1024).toFixed(2)} MB`); +console.log(`oldest source after pressure: ${oldest?.meta.source ?? 'null'}`); +console.log(`newest source after pressure: ${newest?.meta.source ?? 'null'}`); + +if (oldest?.meta.source !== MatchSource.Dynamic) { + throw new Error(`cache cardinality regression: oldest hit should have been evicted, got ${oldest?.meta.source}`); +} +if (newest?.meta.source !== MatchSource.Cache) { + throw new Error(`cache cardinality regression: newest hit should remain cached, got ${newest?.meta.source}`); +} + +settleScavenger(); + +const hitRouter = buildRouter(); +for (let i = 0; i < CACHE_SIZE; i++) { + hitRouter.match('GET', `/users/${i}`); +} + +const evictRouter = buildRouter(); +for (let i = 0; i < CACHE_SIZE; i++) { + evictRouter.match('GET', `/users/${i}`); +} + +const missRouter = buildRouter(); + +summary(() => { + let hitCursor = 0; + bench('cache hit (warm, resident key)', () => { + const n = hitCursor++ % CACHE_SIZE; + do_not_optimize(hitRouter.match('GET', `/users/${n}`)); + }); + + let evictCursor = CACHE_SIZE; + bench('cache evict (new key, forces LRU evict)', () => { + const n = evictCursor++; + do_not_optimize(evictRouter.match('GET', `/users/${n}`)); + }); + + let missCursor = 0; + bench('miss path (no matching route)', () => { + const n = missCursor++; + do_not_optimize(missRouter.match('GET', `/nowhere/${n}`)); + }); +}); + +await run(); diff --git a/packages/router/bench/comparison.bench.ts b/packages/router/bench/comparison.bench.ts index 5352ae8..70b1622 100644 --- a/packages/router/bench/comparison.bench.ts +++ b/packages/router/bench/comparison.bench.ts @@ -1,37 +1,27 @@ -import { run, bench, summary, do_not_optimize } from 'mitata'; - -// ── @zipbul/router ── -import { Router } from '../src/router'; - -// ── find-my-way ── import FindMyWay from 'find-my-way'; - -// ── memoirist (Elysia) ── -import { Memoirist } from 'memoirist'; - -// ── rou3 (H3/Nitro) ── -import { createRouter as createRou3, addRoute, findRoute } from 'rou3'; - -// ── hono ── import { RegExpRouter } from 'hono/router/reg-exp-router'; import { TrieRouter } from 'hono/router/trie-router'; - -// ── koa-tree-router ── import KoaTreeRouter from 'koa-tree-router'; +import { Memoirist } from 'memoirist'; +import { run, bench, summary, do_not_optimize } from 'mitata'; +import { spawnSync } from 'node:child_process'; +import { fileURLToPath } from 'node:url'; +import { createRouter as createRou3, addRoute, findRoute } from 'rou3'; -// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ -// ROUTE SETS -// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ +import { Router } from '../src/router'; +import { printEnv } from './helpers'; -type Route = [method: string, path: string, value: number]; +const ADAPTER_NAMES = ['zipbul', 'find-my-way', 'memoirist', 'rou3', 'hono-regexp', 'hono-trie', 'koa-tree-router'] as const; +type AdapterName = (typeof ADAPTER_NAMES)[number]; + +type Method = string; +type Route = readonly [Method, string, number]; -// 1) Static routes (100) const STATIC_ROUTES: Route[] = []; for (let i = 0; i < 100; i++) { STATIC_ROUTES.push(['GET', `/api/v1/resource${i}`, i]); } -// 2) Parametric routes const PARAM_ROUTES: Route[] = [ ['GET', '/users/:id', 1], ['GET', '/users/:id/posts/:postId', 2], @@ -39,15 +29,12 @@ const PARAM_ROUTES: Route[] = [ ['GET', '/orgs/:org/teams/:team/members/:member', 4], ]; -// 3) Wildcard routes const WILDCARD_ROUTES: Route[] = [ ['GET', '/static/*path', 1], ['GET', '/files/*filepath', 2], ]; -// 4) GitHub API-like routes (~65) const GITHUB_ROUTES: Route[] = [ - // Users ['GET', '/user', 1], ['GET', '/users/:user', 2], ['GET', '/users/:user/repos', 3], @@ -57,7 +44,6 @@ const GITHUB_ROUTES: Route[] = [ ['GET', '/users/:user/following', 7], ['GET', '/users/:user/following/:target', 8], ['GET', '/users/:user/keys', 9], - // Repos ['GET', '/repos/:owner/:repo', 10], ['GET', '/repos/:owner/:repo/commits', 11], ['GET', '/repos/:owner/:repo/commits/:sha', 12], @@ -92,7 +78,6 @@ const GITHUB_ROUTES: Route[] = [ ['GET', '/repos/:owner/:repo/collaborators/:user', 41], ['PUT', '/repos/:owner/:repo/collaborators/:user', 42], ['DELETE', '/repos/:owner/:repo/collaborators/:user', 43], - // Orgs ['GET', '/orgs/:org', 44], ['GET', '/orgs/:org/repos', 45], ['GET', '/orgs/:org/members', 46], @@ -102,17 +87,14 @@ const GITHUB_ROUTES: Route[] = [ ['POST', '/orgs/:org/teams', 50], ['GET', '/orgs/:org/teams/:team/members', 51], ['GET', '/orgs/:org/teams/:team/repos', 52], - // Gists ['GET', '/gists', 53], ['GET', '/gists/:id', 54], ['POST', '/gists', 55], ['GET', '/gists/:id/comments', 56], - // Search ['GET', '/search/repositories', 57], ['GET', '/search/code', 58], ['GET', '/search/issues', 59], ['GET', '/search/users', 60], - // Misc ['GET', '/notifications', 61], ['GET', '/events', 62], ['GET', '/feeds', 63], @@ -120,410 +102,276 @@ const GITHUB_ROUTES: Route[] = [ ['GET', '/emojis', 65], ]; -// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ -// ROUTER ADAPTERS -// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ - -// Wildcard path converters -function toFindMyWayPath(path: string): string { - // /static/*path → /static/* - return path.replace(/\*\w+/, '*'); -} - -function toRou3Path(path: string): string { - // /static/*path → /static/** - return path.replace(/\*\w+/, '**'); -} - -function toHonoPath(path: string): string { - // /static/*path → /static/* - return path.replace(/\*\w+/, '*'); -} - -function toKoaTreePath(path: string): string { - // /static/*path → /static/*filepath (koa-tree-router uses *name) - return path.replace(/\*\w+/, '*filepath'); +interface Adapter { + readonly name: AdapterName; + rewrite(path: string): string; + setup(routes: ReadonlyArray): unknown; + match(router: unknown, method: Method, path: string): unknown; } -function toMemoiristPath(path: string): string { - // /static/*path → /static/* - return path.replace(/\*\w+/, '*'); +const adapters: Record = { + zipbul: { + name: 'zipbul', + rewrite: p => p, + setup: rs => { + const r = new Router(); + for (const [m, p, v] of rs) { + r.add(m as 'GET', p, v); + } + r.build(); + return r; + }, + match: (r, m, p) => (r as Router).match(m, p), + }, + 'find-my-way': { + name: 'find-my-way', + rewrite: p => p.replace(/\/\*[^/]+$/, '/*'), + setup: rs => { + const r = FindMyWay(); + for (const [m, p, v] of rs) { + r.on(m as 'GET', p, () => v); + } + return r; + }, + match: (r, m, p) => (r as ReturnType).find(m as 'GET', p), + }, + memoirist: { + name: 'memoirist', + rewrite: p => p, + setup: rs => { + const r = new Memoirist(); + for (const [m, p, v] of rs) { + r.add(m, p, v); + } + return r; + }, + match: (r, m, p) => (r as Memoirist).find(m, p), + }, + rou3: { + name: 'rou3', + rewrite: p => p.replace(/\/\*([^/]+)$/, '/**:$1'), + setup: rs => { + const r = createRou3(); + for (const [m, p, v] of rs) { + addRoute(r, m, p, v); + } + return r; + }, + match: (r, m, p) => findRoute(r as ReturnType>, m, p), + }, + 'hono-regexp': { + name: 'hono-regexp', + rewrite: p => p.replace(/\/\*[^/]+$/, '/*'), + setup: rs => { + const r = new RegExpRouter(); + for (const [m, p, v] of rs) { + r.add(m, p, v); + } + return r; + }, + match: (r, m, p) => { + const out = (r as RegExpRouter).match(m, p) as unknown as [unknown[]]; + return out[0].length > 0 ? out : null; + }, + }, + 'hono-trie': { + name: 'hono-trie', + rewrite: p => p.replace(/\/\*[^/]+$/, '/*'), + setup: rs => { + const r = new TrieRouter(); + for (const [m, p, v] of rs) { + r.add(m, p, v); + } + return r; + }, + match: (r, m, p) => { + const out = (r as TrieRouter).match(m, p) as unknown as [unknown[]]; + return out[0].length > 0 ? out : null; + }, + }, + 'koa-tree-router': { + name: 'koa-tree-router', + rewrite: p => p, + setup: rs => { + const r = new KoaTreeRouter() as unknown as { + on: (m: string, p: string, h: () => unknown) => void; + find: (m: string, p: string) => { handle: unknown }; + }; + for (const [m, p, v] of rs) { + r.on(m, p, () => v); + } + return r; + }, + match: (r, m, p) => { + const out = (r as { find: (m: string, p: string) => { handle: unknown } }).find(m, p); + return out.handle === null ? null : out; + }, + }, +}; + +interface Scenario { + label: string; + routes: ReadonlyArray; + hits: ReadonlyArray; + misses: ReadonlyArray; + wrongMethod: readonly [Method, string]; } -// ── @zipbul/router ── +const scenarios: Scenario[] = [ + { + label: 'static', + routes: STATIC_ROUTES, + hits: [ + ['GET', '/api/v1/resource0'], + ['GET', '/api/v1/resource50'], + ['GET', '/api/v1/resource99'], + ], + misses: [['GET', '/api/v1/missing']], + wrongMethod: ['POST', '/api/v1/resource50'], + }, + { + label: 'param-1', + routes: PARAM_ROUTES, + hits: [['GET', '/users/42']], + misses: [['GET', '/missing/42']], + wrongMethod: ['POST', '/users/42'], + }, + { + label: 'param-3', + routes: PARAM_ROUTES, + hits: [['GET', '/repos/zipbul/toolkit/issues/42']], + misses: [['GET', '/repos/zipbul/toolkit/missing/42']], + wrongMethod: ['POST', '/repos/zipbul/toolkit/issues/42'], + }, + { + label: 'wildcard', + routes: WILDCARD_ROUTES, + hits: [ + ['GET', '/static/js/app.bundle.js'], + ['GET', '/files/uploads/2024/photo.jpg'], + ], + misses: [['GET', '/missing/path/here']], + wrongMethod: ['POST', '/static/js/app.bundle.js'], + }, + { + label: 'github-static', + routes: GITHUB_ROUTES, + hits: [['GET', '/user']], + misses: [['GET', '/missing']], + wrongMethod: ['POST', '/user'], + }, + { + label: 'github-param', + routes: GITHUB_ROUTES, + hits: [['GET', '/repos/zipbul/toolkit/issues/42']], + misses: [['GET', '/repos/zipbul/toolkit/missing/42']], + wrongMethod: ['DELETE', '/repos/zipbul/toolkit/issues/42'], + }, + { + label: 'miss', + routes: STATIC_ROUTES, + hits: [], + misses: [['GET', '/nonexistent/path/that/does/not/exist']], + wrongMethod: ['POST', '/api/v1/resource50'], + }, +]; -function setupZipbul(routes: Route[]): Router { - const router = new Router(); - for (const [method, path, value] of routes) { - router.add(method as 'GET', path, value); +const workerAdapter = process.argv[2]; +const workerScenario = process.argv[3]; +const isWorker = workerAdapter !== undefined && workerScenario !== undefined; + +if (!isWorker) { + printEnv(); + const total = scenarios.length * ADAPTER_NAMES.length; + console.log( + `adapters=${ADAPTER_NAMES.length} scenarios=${scenarios.length} pairs=${total} (each pair runs in a fresh process for JIT/IC/RSS isolation)`, + ); + const selfPath = fileURLToPath(import.meta.url); + let failCount = 0; + for (const scenario of scenarios) { + for (const adapterName of ADAPTER_NAMES) { + console.log(`\n## ${scenario.label} / ${adapterName}`); + const child = spawnSync('bun', [selfPath, adapterName, scenario.label], { + stdio: ['ignore', 'inherit', 'inherit'], + }); + if (child.status !== 0) { + console.error(`pair=${scenario.label}/${adapterName} exited with status ${child.status}`); + failCount++; + } + } } - router.build(); - return router; + process.exit(failCount > 0 ? 1 : 0); } -// ── find-my-way ── - -function setupFindMyWay(routes: Route[]): ReturnType { - const router = FindMyWay(); - for (const [method, path, value] of routes) { - router.on(method as 'GET', toFindMyWayPath(path), () => value); - } - return router; +const adapter = adapters[workerAdapter as AdapterName]; +if (adapter === undefined) { + console.error(`Unknown adapter '${workerAdapter}'. Valid: ${ADAPTER_NAMES.join(', ')}`); + process.exit(1); } -// ── memoirist ── - -function setupMemoirist(routes: Route[]): Memoirist { - const router = new Memoirist(); - for (const [method, path, value] of routes) { - router.add(method, toMemoiristPath(path), value); - } - return router; +const scenario = scenarios.find(s => s.label === workerScenario); +if (scenario === undefined) { + console.error(`Unknown scenario '${workerScenario}'. Valid: ${scenarios.map(s => s.label).join(', ')}`); + process.exit(1); } -// ── rou3 ── - -function setupRou3(routes: Route[]) { - const router = createRou3(); - for (const [method, path, value] of routes) { - addRoute(router, method, toRou3Path(path), value); - } - return router; +const rewritten = scenario.routes.map(([m, p, v]) => [m, adapter.rewrite(p), v] as Route); +let router: unknown; +try { + router = adapter.setup(rewritten); +} catch (e) { + console.log( + `sanity=setup-failed adapter=${adapter.name} scenario=${scenario.label} error=${JSON.stringify(e instanceof Error ? e.message : String(e))}`, + ); + process.exit(0); } -// ── hono RegExpRouter ── - -function setupHonoRegExp(routes: Route[]): RegExpRouter { - const router = new RegExpRouter(); - for (const [method, path, value] of routes) { - router.add(method, toHonoPath(path), value); +for (const [m, p] of scenario.hits) { + const r = adapter.match(router, m, p); + if (r === null || r === undefined) { + console.log(`sanity=hit-null adapter=${adapter.name} scenario=${scenario.label} path=${JSON.stringify(`${m} ${p}`)}`); + process.exit(0); } - return router; } - -// ── hono TrieRouter ── - -function setupHonoTrie(routes: Route[]): TrieRouter { - const router = new TrieRouter(); - for (const [method, path, value] of routes) { - router.add(method, toHonoPath(path), value); +for (const [m, p] of scenario.misses) { + const r = adapter.match(router, m, p); + if (r !== null && r !== undefined) { + console.log(`sanity=miss-not-null adapter=${adapter.name} scenario=${scenario.label} path=${JSON.stringify(`${m} ${p}`)}`); + process.exit(0); } - return router; } - -// ── koa-tree-router ── - -function setupKoaTree(routes: Route[]) { - const router = new KoaTreeRouter() as any; - for (const [method, path, value] of routes) { - router.on(method, toKoaTreePath(path), () => value); +{ + const [m, p] = scenario.wrongMethod; + const r = adapter.match(router, m, p); + if (r !== null && r !== undefined) { + console.log( + `sanity=wrong-method-not-null adapter=${adapter.name} scenario=${scenario.label} path=${JSON.stringify(`${m} ${p}`)}`, + ); + process.exit(0); } - return router; } - -// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ -// PRE-BUILT ROUTERS -// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ - -// Static (100 routes) -const zipbulStatic = setupZipbul(STATIC_ROUTES); -const fmwStatic = setupFindMyWay(STATIC_ROUTES); -const memoStatic = setupMemoirist(STATIC_ROUTES); -const rou3Static = setupRou3(STATIC_ROUTES); -const honoRegStatic = setupHonoRegExp(STATIC_ROUTES); -const honoTrieStatic = setupHonoTrie(STATIC_ROUTES); -const koaStatic = setupKoaTree(STATIC_ROUTES); - -// Parametric -const zipbulParam = setupZipbul(PARAM_ROUTES); -const fmwParam = setupFindMyWay(PARAM_ROUTES); -const memoParam = setupMemoirist(PARAM_ROUTES); -const rou3Param = setupRou3(PARAM_ROUTES); -const honoRegParam = setupHonoRegExp(PARAM_ROUTES); -const honoTrieParam = setupHonoTrie(PARAM_ROUTES); -const koaParam = setupKoaTree(PARAM_ROUTES); - -// Wildcard -const zipbulWild = setupZipbul(WILDCARD_ROUTES); -const fmwWild = setupFindMyWay(WILDCARD_ROUTES); -const memoWild = setupMemoirist(WILDCARD_ROUTES); -const rou3Wild = setupRou3(WILDCARD_ROUTES); -const honoRegWild = setupHonoRegExp(WILDCARD_ROUTES); -const honoTrieWild = setupHonoTrie(WILDCARD_ROUTES); -const koaWild = setupKoaTree(WILDCARD_ROUTES); - -// GitHub API (~65 routes) -const zipbulGH = setupZipbul(GITHUB_ROUTES); -const fmwGH = setupFindMyWay(GITHUB_ROUTES); -const memoGH = setupMemoirist(GITHUB_ROUTES); -const rou3GH = setupRou3(GITHUB_ROUTES); -const honoRegGH = setupHonoRegExp(GITHUB_ROUTES); -const honoTrieGH = setupHonoTrie(GITHUB_ROUTES); -const koaGH = setupKoaTree(GITHUB_ROUTES); - -// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ -// SANITY CHECK -// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ - -function sanityCheck() { - // Verify all routers match the same test paths - const checks: [string, string, string][] = [ - // [method, path, description] - ['GET', '/api/v1/resource50', 'static'], - ['GET', '/users/42', 'param-1'], - ['GET', '/repos/zipbul/toolkit/issues/1', 'param-3'], - ['GET', '/user', 'github-static'], - ['GET', '/repos/zipbul/toolkit/commits', 'github-param'], - ]; - - for (const [method, path, desc] of checks) { - const z = zipbulGH.match(method as 'GET', path) ?? zipbulStatic.match(method as 'GET', path) ?? zipbulParam.match(method as 'GET', path); - const f = fmwGH.find(method as 'GET', path) ?? fmwStatic.find(method as 'GET', path) ?? fmwParam.find(method as 'GET', path); - const m = memoGH.find(method, path) ?? memoStatic.find(method, path) ?? memoParam.find(method, path); - const r = findRoute(rou3GH, method, path) ?? findRoute(rou3Static, method, path) ?? findRoute(rou3Param, method, path); - const hr = honoRegGH.match(method, path) ?? honoRegStatic.match(method, path) ?? honoRegParam.match(method, path); - const ht = honoTrieGH.match(method, path) ?? honoTrieStatic.match(method, path) ?? honoTrieParam.match(method, path); - const k = koaGH.find(method, path) ?? koaStatic.find(method, path) ?? koaParam.find(method, path); - - const allFound = z && f && m && r && hr && ht && k; - if (!allFound) { - console.error(`SANITY FAIL [${desc}]: ${method} ${path}`); - console.error(` zipbul=${!!z} fmw=${!!f} memo=${!!m} rou3=${!!r} honoReg=${!!hr} honoTrie=${!!ht} koa=${!!k}`); - process.exit(1); - } - } - - console.log('Sanity check passed: all routers match test paths.\n'); -} - -sanityCheck(); - -// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ -// BENCHMARKS -// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ - -// ── 1. Static match (100 routes) ── +console.log(`sanity=ok adapter=${adapter.name} scenario=${scenario.label}`); summary(() => { - bench('static — @zipbul/router', () => { - do_not_optimize(zipbulStatic.match('GET', '/api/v1/resource50')); - }); - - bench('static — find-my-way', () => { - do_not_optimize(fmwStatic.find('GET', '/api/v1/resource50')); + scenario.hits.forEach(([m, path], idx) => { + bench(`${scenario.label}/hit${scenario.hits.length > 1 ? `-${idx}` : ''} — ${adapter.name}`, () => { + do_not_optimize(adapter.match(router, m, path)); + }); }); - bench('static — memoirist', () => { - do_not_optimize(memoStatic.find('GET', '/api/v1/resource50')); - }); - - bench('static — rou3', () => { - do_not_optimize(findRoute(rou3Static, 'GET', '/api/v1/resource50')); - }); - - bench('static — hono RegExpRouter', () => { - do_not_optimize(honoRegStatic.match('GET', '/api/v1/resource50')); - }); - - bench('static — hono TrieRouter', () => { - do_not_optimize(honoTrieStatic.match('GET', '/api/v1/resource50')); - }); - - bench('static — koa-tree-router', () => { - do_not_optimize(koaStatic.find('GET', '/api/v1/resource50')); - }); -}); - -// ── 2. Param match (1-param: /users/:id) ── - -summary(() => { - bench('param1 — @zipbul/router', () => { - do_not_optimize(zipbulParam.match('GET', '/users/42')); - }); - - bench('param1 — find-my-way', () => { - do_not_optimize(fmwParam.find('GET', '/users/42')); - }); - - bench('param1 — memoirist', () => { - do_not_optimize(memoParam.find('GET', '/users/42')); - }); - - bench('param1 — rou3', () => { - do_not_optimize(findRoute(rou3Param, 'GET', '/users/42')); - }); - - bench('param1 — hono RegExpRouter', () => { - do_not_optimize(honoRegParam.match('GET', '/users/42')); - }); - - bench('param1 — hono TrieRouter', () => { - do_not_optimize(honoTrieParam.match('GET', '/users/42')); - }); - - bench('param1 — koa-tree-router', () => { - do_not_optimize(koaParam.find('GET', '/users/42')); - }); -}); - -// ── 3. Param match (3-deep: /repos/:owner/:repo/issues/:number) ── - -summary(() => { - bench('param3 — @zipbul/router', () => { - do_not_optimize(zipbulParam.match('GET', '/repos/zipbul/toolkit/issues/42')); - }); - - bench('param3 — find-my-way', () => { - do_not_optimize(fmwParam.find('GET', '/repos/zipbul/toolkit/issues/42')); - }); - - bench('param3 — memoirist', () => { - do_not_optimize(memoParam.find('GET', '/repos/zipbul/toolkit/issues/42')); - }); - - bench('param3 — rou3', () => { - do_not_optimize(findRoute(rou3Param, 'GET', '/repos/zipbul/toolkit/issues/42')); - }); - - bench('param3 — hono RegExpRouter', () => { - do_not_optimize(honoRegParam.match('GET', '/repos/zipbul/toolkit/issues/42')); - }); - - bench('param3 — hono TrieRouter', () => { - do_not_optimize(honoTrieParam.match('GET', '/repos/zipbul/toolkit/issues/42')); - }); - - bench('param3 — koa-tree-router', () => { - do_not_optimize(koaParam.find('GET', '/repos/zipbul/toolkit/issues/42')); - }); -}); - -// ── 4. Wildcard match (/static/*path) ── - -summary(() => { - bench('wild — @zipbul/router', () => { - do_not_optimize(zipbulWild.match('GET', '/static/js/app.bundle.js')); - }); - - bench('wild — find-my-way', () => { - do_not_optimize(fmwWild.find('GET', '/static/js/app.bundle.js')); - }); - - bench('wild — memoirist', () => { - do_not_optimize(memoWild.find('GET', '/static/js/app.bundle.js')); - }); - - bench('wild — rou3', () => { - do_not_optimize(findRoute(rou3Wild, 'GET', '/static/js/app.bundle.js')); - }); - - bench('wild — hono RegExpRouter', () => { - do_not_optimize(honoRegWild.match('GET', '/static/js/app.bundle.js')); - }); - - bench('wild — hono TrieRouter', () => { - do_not_optimize(honoTrieWild.match('GET', '/static/js/app.bundle.js')); - }); - - bench('wild — koa-tree-router', () => { - do_not_optimize(koaWild.find('GET', '/static/js/app.bundle.js')); - }); -}); - -// ── 5. GitHub API — static hit (/user) ── - -summary(() => { - bench('gh-static — @zipbul/router', () => { - do_not_optimize(zipbulGH.match('GET', '/user')); - }); - - bench('gh-static — find-my-way', () => { - do_not_optimize(fmwGH.find('GET', '/user')); - }); - - bench('gh-static — memoirist', () => { - do_not_optimize(memoGH.find('GET', '/user')); - }); - - bench('gh-static — rou3', () => { - do_not_optimize(findRoute(rou3GH, 'GET', '/user')); - }); - - bench('gh-static — hono RegExpRouter', () => { - do_not_optimize(honoRegGH.match('GET', '/user')); - }); - - bench('gh-static — hono TrieRouter', () => { - do_not_optimize(honoTrieGH.match('GET', '/user')); - }); - - bench('gh-static — koa-tree-router', () => { - do_not_optimize(koaGH.find('GET', '/user')); - }); -}); - -// ── 6. GitHub API — param hit (/repos/:owner/:repo/issues/:number) ── - -summary(() => { - bench('gh-param — @zipbul/router', () => { - do_not_optimize(zipbulGH.match('GET', '/repos/zipbul/toolkit/issues/42')); - }); - - bench('gh-param — find-my-way', () => { - do_not_optimize(fmwGH.find('GET', '/repos/zipbul/toolkit/issues/42')); - }); - - bench('gh-param — memoirist', () => { - do_not_optimize(memoGH.find('GET', '/repos/zipbul/toolkit/issues/42')); - }); - - bench('gh-param — rou3', () => { - do_not_optimize(findRoute(rou3GH, 'GET', '/repos/zipbul/toolkit/issues/42')); - }); - - bench('gh-param — hono RegExpRouter', () => { - do_not_optimize(honoRegGH.match('GET', '/repos/zipbul/toolkit/issues/42')); - }); - - bench('gh-param — hono TrieRouter', () => { - do_not_optimize(honoTrieGH.match('GET', '/repos/zipbul/toolkit/issues/42')); - }); - - bench('gh-param — koa-tree-router', () => { - do_not_optimize(koaGH.find('GET', '/repos/zipbul/toolkit/issues/42')); - }); -}); - -// ── 7. 404 miss (100 routes) ── - -summary(() => { - bench('miss — @zipbul/router', () => { - do_not_optimize(zipbulStatic.match('GET', '/nonexistent/path/that/does/not/exist')); - }); - - bench('miss — find-my-way', () => { - do_not_optimize(fmwStatic.find('GET', '/nonexistent/path/that/does/not/exist')); - }); - - bench('miss — memoirist', () => { - do_not_optimize(memoStatic.find('GET', '/nonexistent/path/that/does/not/exist')); - }); - - bench('miss — rou3', () => { - do_not_optimize(findRoute(rou3Static, 'GET', '/nonexistent/path/that/does/not/exist')); - }); - - bench('miss — hono RegExpRouter', () => { - do_not_optimize(honoRegStatic.match('GET', '/nonexistent/path/that/does/not/exist')); - }); - - bench('miss — hono TrieRouter', () => { - do_not_optimize(honoTrieStatic.match('GET', '/nonexistent/path/that/does/not/exist')); - }); + if (scenario.misses.length > 0) { + const [m, path] = scenario.misses[0]!; + bench(`${scenario.label}/miss — ${adapter.name}`, () => { + do_not_optimize(adapter.match(router, m, path)); + }); + } - bench('miss — koa-tree-router', () => { - do_not_optimize(koaStatic.find('GET', '/nonexistent/path/that/does/not/exist')); - }); + { + const [m, path] = scenario.wrongMethod; + bench(`${scenario.label}/wrong-method — ${adapter.name}`, () => { + do_not_optimize(adapter.match(router, m, path)); + }); + } }); await run(); diff --git a/packages/router/bench/complex-shapes.bench.ts b/packages/router/bench/complex-shapes.bench.ts new file mode 100644 index 0000000..68c4208 --- /dev/null +++ b/packages/router/bench/complex-shapes.bench.ts @@ -0,0 +1,379 @@ +import { Memoirist } from 'memoirist'; +import { run, bench, do_not_optimize } from 'mitata'; +import { spawnSync } from 'node:child_process'; +import { fileURLToPath } from 'node:url'; +import { createRouter as createRou3, addRoute, findRoute } from 'rou3'; + +import { Router } from '../src/router'; +import { printEnv } from './helpers'; + +const ROUTER_NAMES = ['zipbul', 'memoirist', 'rou3'] as const; +type RouterKind = (typeof ROUTER_NAMES)[number]; + +const SHAPES = [ + 'deep10', + 'combo', + 'regex', + 'heavy-param', + 'heavy-static', + 'manywild', + 'deep20', + 'heavy1k-static', + 'heavy1k-param', + 'heavy1k-wildcard', + 'heavy1k-regex', +] as const; +type Shape = (typeof SHAPES)[number]; + +const DEEP_ROUTE = '/a/:p1/b/:p2/c/:p3/d/:p4/e/:p5/f/:p6/g/:p7/h/:p8/i/:p9/j/:p10'; +const DEEP_URL = '/a/v1/b/v2/c/v3/d/v4/e/v5/f/v6/g/v7/h/v8/i/v9/j/v10'; +const COMBO_ROUTE = '/api/:version/users/:userId/files/*filepath'; +const COMBO_URL = '/api/v2/users/42/files/docs/2024/quarterly-report.pdf'; +const REGEX_ROUTE_Z = '/api/:apiVer(\\d+)/orgs/:org/repos/:repo([\\w-]+)/issues/:issueId(\\d+)'; +const REGEX_URL = '/api/3/orgs/anthropic/repos/zipbul-toolkit/issues/12345'; +const WILD_URL = '/files25/some/deep/nested/path/to/file.tgz'; +const HEAVY_PARAM_URL = '/api/v1/projects42/myproj/issues/123/comments/456'; +const HEAVY_STATIC_URL = '/api/v1/sys/cfg50'; +const HEAVY1K_STATIC_URL = '/static/page100'; +const HEAVY1K_PARAM_URL = '/api50/v1/users/42/posts/123/comments/9'; +const HEAVY1K_WILD_URL = '/files50/some/deep/file.tgz'; +const HEAVY1K_REGEX_URL = '/search50/abc'; + +const DEEP20_ROUTE = (() => { + let p = ''; + for (let i = 0; i < 20; i++) { + p += `/s${i}/:p${i}`; + } + return p; +})(); +const DEEP20_URL = (() => { + let u = ''; + for (let i = 0; i < 20; i++) { + u += `/s${i}/v${i}`; + } + return u; +})(); + +interface Built { + match: (url: string) => unknown; + benchUrl: string; +} + +function buildZipbul(shape: Shape): Built | null { + switch (shape) { + case 'deep10': { + const r = new Router(); + r.add('GET', DEEP_ROUTE, 1); + r.build(); + return { match: u => r.match('GET', u), benchUrl: DEEP_URL }; + } + case 'combo': { + const r = new Router(); + r.add('GET', COMBO_ROUTE, 1); + r.build(); + return { match: u => r.match('GET', u), benchUrl: COMBO_URL }; + } + case 'regex': { + const r = new Router(); + r.add('GET', REGEX_ROUTE_Z, 1); + r.build(); + return { match: u => r.match('GET', u), benchUrl: REGEX_URL }; + } + case 'heavy-param': + case 'heavy-static': { + const r = new Router(); + let id = 0; + for (let i = 0; i < 100; i++) { + r.add('GET', `/api/v1/sys/cfg${i}`, id++); + } + for (let i = 0; i < 200; i++) { + r.add('GET', `/api/v1/users${i}/:userId`, id++); + } + for (let i = 0; i < 100; i++) { + r.add('GET', `/api/v1/orgs${i}/:org/repos/:repo`, id++); + } + for (let i = 0; i < 100; i++) { + r.add('GET', `/api/v1/projects${i}/:proj/issues/:issue/comments/:comment`, id++); + } + r.build(); + return { + match: u => r.match('GET', u), + benchUrl: shape === 'heavy-param' ? HEAVY_PARAM_URL : HEAVY_STATIC_URL, + }; + } + case 'manywild': { + const r = new Router(); + for (let i = 0; i < 50; i++) { + r.add('GET', `/files${i}/*path`, i); + } + r.build(); + return { match: u => r.match('GET', u), benchUrl: WILD_URL }; + } + case 'deep20': { + const r = new Router(); + r.add('GET', DEEP20_ROUTE, 1); + r.build(); + return { match: u => r.match('GET', u), benchUrl: DEEP20_URL }; + } + case 'heavy1k-static': + case 'heavy1k-param': + case 'heavy1k-wildcard': + case 'heavy1k-regex': { + const r = new Router(); + let id = 0; + for (let i = 0; i < 200; i++) { + r.add('GET', `/static/page${i}`, id++); + } + for (let i = 0; i < 200; i++) { + r.add('GET', `/users${i}/:id`, id++); + } + for (let i = 0; i < 200; i++) { + r.add('GET', `/orgs${i}/:org/repos/:repo`, id++); + } + for (let i = 0; i < 100; i++) { + r.add('GET', `/search${i}/:q([a-z]+)`, id++); + } + for (let i = 0; i < 100; i++) { + r.add('GET', `/files${i}/*path`, id++); + } + for (let i = 0; i < 200; i++) { + r.add('GET', `/api${i}/v1/users/:id/posts/:post/comments/:c`, id++); + } + r.build(); + const benchUrl = + shape === 'heavy1k-static' + ? HEAVY1K_STATIC_URL + : shape === 'heavy1k-param' + ? HEAVY1K_PARAM_URL + : shape === 'heavy1k-wildcard' + ? HEAVY1K_WILD_URL + : HEAVY1K_REGEX_URL; + return { match: u => r.match('GET', u), benchUrl }; + } + default: + return null; + } +} + +function buildMemoirist(shape: Shape): Built | null { + switch (shape) { + case 'deep10': { + const r = new Memoirist(); + r.add('GET', DEEP_ROUTE, 1); + return { match: u => r.find('GET', u), benchUrl: DEEP_URL }; + } + case 'combo': { + const r = new Memoirist(); + r.add('GET', COMBO_ROUTE.replace(/\*\w+/, '*'), 1); + return { match: u => r.find('GET', u), benchUrl: COMBO_URL }; + } + case 'regex': + return null; + case 'heavy-param': + case 'heavy-static': { + const r = new Memoirist(); + let id = 0; + for (let i = 0; i < 100; i++) { + r.add('GET', `/api/v1/sys/cfg${i}`, id++); + } + for (let i = 0; i < 200; i++) { + r.add('GET', `/api/v1/users${i}/:userId`, id++); + } + for (let i = 0; i < 100; i++) { + r.add('GET', `/api/v1/orgs${i}/:org/repos/:repo`, id++); + } + for (let i = 0; i < 100; i++) { + r.add('GET', `/api/v1/projects${i}/:proj/issues/:issue/comments/:comment`, id++); + } + return { + match: u => r.find('GET', u), + benchUrl: shape === 'heavy-param' ? HEAVY_PARAM_URL : HEAVY_STATIC_URL, + }; + } + case 'manywild': { + const r = new Memoirist(); + for (let i = 0; i < 50; i++) { + r.add('GET', `/files${i}/*`, i); + } + return { match: u => r.find('GET', u), benchUrl: WILD_URL }; + } + case 'deep20': { + const r = new Memoirist(); + r.add('GET', DEEP20_ROUTE, 1); + return { match: u => r.find('GET', u), benchUrl: DEEP20_URL }; + } + case 'heavy1k-static': + case 'heavy1k-param': + case 'heavy1k-wildcard': + case 'heavy1k-regex': { + const r = new Memoirist(); + let id = 0; + for (let i = 0; i < 200; i++) { + r.add('GET', `/static/page${i}`, id++); + } + for (let i = 0; i < 200; i++) { + r.add('GET', `/users${i}/:id`, id++); + } + for (let i = 0; i < 200; i++) { + r.add('GET', `/orgs${i}/:org/repos/:repo`, id++); + } + for (let i = 0; i < 100; i++) { + r.add('GET', `/search${i}/:q`, id++); + } + for (let i = 0; i < 100; i++) { + r.add('GET', `/files${i}/*`, id++); + } + for (let i = 0; i < 200; i++) { + r.add('GET', `/api${i}/v1/users/:id/posts/:post/comments/:c`, id++); + } + const benchUrl = + shape === 'heavy1k-static' + ? HEAVY1K_STATIC_URL + : shape === 'heavy1k-param' + ? HEAVY1K_PARAM_URL + : shape === 'heavy1k-wildcard' + ? HEAVY1K_WILD_URL + : HEAVY1K_REGEX_URL; + return { match: u => r.find('GET', u), benchUrl }; + } + default: + return null; + } +} + +function buildRou3(shape: Shape): Built | null { + switch (shape) { + case 'deep10': { + const r = createRou3(); + addRoute(r, 'GET', DEEP_ROUTE, 1); + return { match: u => findRoute(r, 'GET', u), benchUrl: DEEP_URL }; + } + case 'combo': { + const r = createRou3(); + addRoute(r, 'GET', COMBO_ROUTE.replace(/\*\w+/, '**'), 1); + return { match: u => findRoute(r, 'GET', u), benchUrl: COMBO_URL }; + } + case 'regex': + case 'manywild': + case 'deep20': + return null; + case 'heavy-param': + case 'heavy-static': { + const r = createRou3(); + let id = 0; + for (let i = 0; i < 100; i++) { + addRoute(r, 'GET', `/api/v1/sys/cfg${i}`, id++); + } + for (let i = 0; i < 200; i++) { + addRoute(r, 'GET', `/api/v1/users${i}/:userId`, id++); + } + for (let i = 0; i < 100; i++) { + addRoute(r, 'GET', `/api/v1/orgs${i}/:org/repos/:repo`, id++); + } + for (let i = 0; i < 100; i++) { + addRoute(r, 'GET', `/api/v1/projects${i}/:proj/issues/:issue/comments/:comment`, id++); + } + return { + match: u => findRoute(r, 'GET', u), + benchUrl: shape === 'heavy-param' ? HEAVY_PARAM_URL : HEAVY_STATIC_URL, + }; + } + case 'heavy1k-static': + case 'heavy1k-param': + case 'heavy1k-wildcard': + case 'heavy1k-regex': { + const r = createRou3(); + let id = 0; + for (let i = 0; i < 200; i++) { + addRoute(r, 'GET', `/static/page${i}`, id++); + } + for (let i = 0; i < 200; i++) { + addRoute(r, 'GET', `/users${i}/:id`, id++); + } + for (let i = 0; i < 200; i++) { + addRoute(r, 'GET', `/orgs${i}/:org/repos/:repo`, id++); + } + for (let i = 0; i < 100; i++) { + addRoute(r, 'GET', `/search${i}/:q`, id++); + } + for (let i = 0; i < 100; i++) { + addRoute(r, 'GET', `/files${i}/**:path`, id++); + } + for (let i = 0; i < 200; i++) { + addRoute(r, 'GET', `/api${i}/v1/users/:id/posts/:post/comments/:c`, id++); + } + const benchUrl = + shape === 'heavy1k-static' + ? HEAVY1K_STATIC_URL + : shape === 'heavy1k-param' + ? HEAVY1K_PARAM_URL + : shape === 'heavy1k-wildcard' + ? HEAVY1K_WILD_URL + : HEAVY1K_REGEX_URL; + return { match: u => findRoute(r, 'GET', u), benchUrl }; + } + default: + return null; + } +} + +const BUILDERS: Record Built | null> = { + zipbul: buildZipbul, + memoirist: buildMemoirist, + rou3: buildRou3, +}; + +const workerKind = process.argv[2] as RouterKind | undefined; +const workerShape = process.argv[3] as Shape | undefined; +const isWorker = workerKind !== undefined && workerShape !== undefined; + +if (!isWorker) { + printEnv(); + const total = SHAPES.length * ROUTER_NAMES.length; + console.log( + `routers=${ROUTER_NAMES.length} shapes=${SHAPES.length} pairs=${total} (each pair runs in a fresh process for JIT/IC/RSS isolation)`, + ); + const selfPath = fileURLToPath(import.meta.url); + let failCount = 0; + for (const shape of SHAPES) { + for (const router of ROUTER_NAMES) { + console.log(`\n## ${shape} / ${router}`); + const child = spawnSync('bun', [selfPath, router, shape], { + stdio: ['ignore', 'inherit', 'inherit'], + }); + if (child.status !== 0) { + console.error(`pair=${shape}/${router} exited with status ${child.status}`); + failCount++; + } + } + } + process.exit(failCount > 0 ? 1 : 0); +} + +if (!ROUTER_NAMES.includes(workerKind)) { + console.error(`Unknown router '${workerKind}'. Valid: ${ROUTER_NAMES.join(', ')}`); + process.exit(1); +} +if (!SHAPES.includes(workerShape)) { + console.error(`Unknown shape '${workerShape}'. Valid: ${SHAPES.join(', ')}`); + process.exit(1); +} + +const built = BUILDERS[workerKind](workerShape); +if (built === null) { + console.log(`skip=true router=${workerKind} shape=${workerShape} reason=unsupported`); + process.exit(0); +} + +const probe = built.match(built.benchUrl); +if (probe === null || probe === undefined) { + console.log(`sanity=match-null router=${workerKind} shape=${workerShape} url=${JSON.stringify(built.benchUrl)}`); + process.exit(1); +} +console.log(`sanity=ok router=${workerKind} shape=${workerShape}`); + +bench(`${workerShape} — ${workerKind}`, () => { + do_not_optimize(built.match(built.benchUrl)); +}); + +await run(); diff --git a/packages/router/bench/first-call-latency.ts b/packages/router/bench/first-call-latency.ts new file mode 100644 index 0000000..0ec1a9f --- /dev/null +++ b/packages/router/bench/first-call-latency.ts @@ -0,0 +1,93 @@ +import { performance } from 'node:perf_hooks'; + +import { Router } from '../src/router'; +import { percentile, printEnv } from './helpers'; + +type Shape = 'static-small' | 'static-large' | 'param-medium'; + +function makeRouter(shape: Shape): Router { + const r = new Router(); + switch (shape) { + case 'static-small': + for (let i = 0; i < 10; i++) { + r.add('GET', `/r${i}`, i); + } + break; + case 'static-large': + for (let i = 0; i < 1000; i++) { + r.add('GET', `/api/v1/r${i}`, i); + } + break; + case 'param-medium': + for (let i = 0; i < 100; i++) { + r.add('GET', `/t${i}/u/:id/p/:pid`, i); + } + break; + default: + throw new Error(`unknown shape: ${String(shape)}`); + } + r.build(); + return r; +} + +function pickHitPath(shape: Shape): string { + switch (shape) { + case 'static-small': + return '/r0'; + case 'static-large': + return '/api/v1/r0'; + case 'param-medium': + return '/t0/u/42/p/7'; + default: + throw new Error(`unknown shape: ${String(shape)}`); + } +} + +function probe(shape: Shape, samples: number): { ns: number[]; checksum: number } { + const ns: number[] = []; + let checksum = 0; + for (let s = 0; s < samples; s++) { + const r = makeRouter(shape); + const path = pickHitPath(shape); + const t0 = performance.now(); + const out = r.match('GET', path); + const dt = (performance.now() - t0) * 1e6; + ns.push(dt); + if (out !== null && out !== undefined) { + checksum++; + } + } + ns.sort((a, b) => a - b); + return { ns, checksum }; +} + +function stats(ns: number[]): { p50: number; p99: number; mean: number; min: number; max: number } { + const sum = ns.reduce((a, b) => a + b, 0); + return { + p50: percentile(ns, 50), + p99: percentile(ns, 99), + mean: sum / ns.length, + min: ns[0]!, + max: ns[ns.length - 1]!, + }; +} + +printEnv(); +const SAMPLES = 200; +console.log(`first-call latency (samples=${SAMPLES}) — ns`); +console.log( + `${'shape'.padEnd(16)} ${'p50'.padStart(10)} ${'p99'.padStart(10)} ${'mean'.padStart(10)} ${'min'.padStart(10)} ${'max'.padStart(10)}`, +); +let totalChecksum = 0; +for (const shape of ['static-small', 'static-large', 'param-medium'] as const) { + totalChecksum += probe(shape, 5).checksum; + const { ns, checksum } = probe(shape, SAMPLES); + totalChecksum += checksum; + const s = stats(ns); + console.log( + `${shape.padEnd(16)} ${s.p50.toFixed(0).padStart(10)} ${s.p99.toFixed(0).padStart(10)} ${s.mean.toFixed(0).padStart(10)} ${s.min.toFixed(0).padStart(10)} ${s.max.toFixed(0).padStart(10)}`, + ); +} +if (totalChecksum < 0) { + console.log(totalChecksum); +} diff --git a/packages/router/bench/helpers.ts b/packages/router/bench/helpers.ts new file mode 100644 index 0000000..07dec2d --- /dev/null +++ b/packages/router/bench/helpers.ts @@ -0,0 +1,85 @@ +import { readFileSync } from 'node:fs'; + +export function gc(): void { + if (typeof Bun !== 'undefined') { + for (let i = 0; i < 5; i++) { + Bun.gc(true); + } + } +} + +export function settleScavenger(ms = 1500): void { + if (typeof Bun !== 'undefined') { + Bun.sleepSync(ms); + } + gc(); +} + +export function mem(): NodeJS.MemoryUsage { + gc(); + return process.memoryUsage(); +} + +export function fmtMem(before: NodeJS.MemoryUsage, after: NodeJS.MemoryUsage): string { + const rss = (after.rss - before.rss) / 1024 / 1024; + const heap = (after.heapUsed - before.heapUsed) / 1024 / 1024; + const arrayBuffers = (after.arrayBuffers - before.arrayBuffers) / 1024 / 1024; + return `rss=${rss.toFixed(2)}MB heap=${heap.toFixed(2)}MB arrayBuffers=${arrayBuffers.toFixed(2)}MB`; +} + +export function printEnv(): void { + const parts: string[] = [ + `bun=${typeof Bun !== 'undefined' ? Bun.version : 'n/a'}`, + `node=${process.version}`, + `platform=${process.platform}`, + `arch=${process.arch}`, + ]; + const tryRead = (path: string): string | null => { + try { + return readFileSync(path, 'utf8'); + } catch { + return null; + } + }; + const cpu = tryRead('/proc/cpuinfo'); + if (cpu !== null) { + const model = cpu.match(/^model name\s*:\s*(.*)$/m)?.[1]?.trim(); + if (model !== undefined) { + parts.push(`cpu=${JSON.stringify(model)}`); + } + const cores = cpu.match(/^processor\s*:/gm)?.length; + if (cores !== undefined) { + parts.push(`cores=${cores}`); + } + } + const gov = tryRead('/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor')?.trim(); + if (gov !== undefined && gov !== null && gov !== '') { + parts.push(`governor=${gov}`); + } + const kernel = tryRead('/proc/sys/kernel/osrelease')?.trim(); + if (kernel !== undefined && kernel !== null && kernel !== '') { + parts.push(`kernel=${kernel}`); + } + const loadavg = tryRead('/proc/loadavg')?.trim().split(/\s+/).slice(0, 3).join(','); + if (loadavg !== undefined && loadavg !== null && loadavg !== '') { + parts.push(`loadavg=${loadavg}`); + } + const cgroup = tryRead('/proc/self/cgroup')?.trim().split('\n').pop(); + if (cgroup !== undefined && cgroup !== null && cgroup !== '') { + parts.push(`cgroup=${JSON.stringify(cgroup)}`); + } + console.log(parts.join(' ')); +} + +export function percentile(values: readonly number[], p: number): number { + if (values.length === 0) { + return Number.NaN; + } + const sorted = [...values].sort((a, b) => a - b); + const idx = Math.min(sorted.length - 1, Math.ceil((p / 100) * sorted.length) - 1); + return sorted[idx]!; +} + +export function median(values: readonly number[]): number { + return percentile(values, 50); +} diff --git a/packages/router/bench/regression-snapshot.ts b/packages/router/bench/regression-snapshot.ts new file mode 100644 index 0000000..9a1b0a0 --- /dev/null +++ b/packages/router/bench/regression-snapshot.ts @@ -0,0 +1,208 @@ +import { Router } from '../src/router'; +import { gc as forceGc, settleScavenger as settleRss } from './helpers'; + +interface Sample { + name: string; + iters: number; + trials: number; + minNsPerOp: number; + medianNsPerOp: number; + meanNsPerOp: number; + maxNsPerOp: number; + stddevPct: number; +} + +function nowNs(): bigint { + return process.hrtime.bigint(); +} + +function timeIt(name: string, iters: number, fn: () => unknown): Sample { + let checksum = 0; + for (let i = 0; i < Math.min(iters, 1000); i++) { + const r = fn(); + if (r !== null && r !== undefined) { + checksum++; + } + } + + const TRIALS = 11; + const samples: number[] = []; + for (let t = 0; t < TRIALS; t++) { + const start = nowNs(); + for (let i = 0; i < iters; i++) { + const r = fn(); + if (r !== null && r !== undefined) { + checksum++; + } + } + const end = nowNs(); + samples.push(Number(end - start) / iters); + } + if (checksum < 0) { + console.log(checksum); + } + samples.sort((a, b) => a - b); + const min = samples[0]!; + const median = samples[Math.floor(TRIALS / 2)]!; + const max = samples[TRIALS - 1]!; + const mean = samples.reduce((a, b) => a + b, 0) / TRIALS; + const variance = samples.reduce((acc, s) => acc + (s - mean) ** 2, 0) / (TRIALS - 1); + const stddev = Math.sqrt(variance); + const stddevPct = (stddev / mean) * 100; + + return { + name, + iters, + trials: TRIALS, + minNsPerOp: min, + medianNsPerOp: median, + meanNsPerOp: mean, + maxNsPerOp: max, + stddevPct, + }; +} + +function rssMB(): number { + return process.memoryUsage().rss / (1024 * 1024); +} + +function buildStaticRouter(count: number): Router { + const r = new Router(); + for (let i = 0; i < count; i++) { + r.add('GET', `/static/${i}`, `s-${i}`); + } + r.build(); + return r; +} + +function buildDynamicRouter(count: number): Router { + const r = new Router(); + for (let i = 0; i < count; i++) { + r.add('GET', `/api/v1/group-${i}/items/:id`, `d-${i}`); + } + r.build(); + return r; +} + +function buildMixedRouter(count: number): Router { + const r = new Router(); + for (let i = 0; i < count / 2; i++) { + r.add('GET', `/static/${i}`, `s-${i}`); + } + for (let i = 0; i < count / 2; i++) { + r.add('GET', `/api/v1/group-${i}/items/:id`, `d-${i}`); + } + r.build(); + return r; +} + +function buildSamples(): Sample[] { + const samples: Sample[] = []; + + for (const count of [10, 100, 1000, 10_000]) { + const routes: Array<[string, string, string]> = []; + for (let i = 0; i < count; i++) { + routes.push(['GET', `/api/v1/group-${i}/items/:id`, `h-${i}`]); + } + + forceGc(); + const iters = count <= 100 ? 50 : count <= 1000 ? 10 : 2; + samples.push( + timeIt(`build/${count}-dynamic-routes`, iters, () => { + const r = new Router(); + for (const [m, p, v] of routes) { + r.add(m, p, v); + } + r.build(); + return r; + }), + ); + } + + return samples; +} + +function matchSamples(): Sample[] { + const samples: Sample[] = []; + + { + const r = buildStaticRouter(100); + samples.push(timeIt('match-hit/static', 200_000, () => r.match('GET', '/static/42'))); + } + + { + const r = buildDynamicRouter(100); + samples.push(timeIt('match-hit/dynamic-cache-warm', 200_000, () => r.match('GET', '/api/v1/group-42/items/9999'))); + } + + { + const r = buildDynamicRouter(100); + let n = 0; + samples.push(timeIt('match-hit/dynamic-cache-cold', 100_000, () => r.match('GET', `/api/v1/group-42/items/${n++}`))); + } + + { + const r = buildMixedRouter(100); + samples.push(timeIt('match-miss/unknown-path', 200_000, () => r.match('GET', '/no/such/route'))); + } + + { + const r = buildMixedRouter(100); + samples.push(timeIt('match-miss/wrong-method', 200_000, () => r.match('POST', '/static/42'))); + } + + return samples; +} + +interface RssSnap { + scenario: string; + rssBeforeBuildMB: number; + rssAfterBuildMB: number; + deltaMB: number; +} + +function rssSnaps(): RssSnap[] { + const snaps: RssSnap[] = []; + + for (const [scenario, builder] of [ + ['static-1000', () => buildStaticRouter(1000)], + ['dynamic-1000', () => buildDynamicRouter(1000)], + ['mixed-10000', () => buildMixedRouter(10_000)], + ] as const) { + settleRss(); + const before = rssMB(); + const r = builder(); + r.match('GET', '/api/v1/group-0/items/x'); + settleRss(); + const after = rssMB(); + snaps.push({ + scenario, + rssBeforeBuildMB: Number(before.toFixed(2)), + rssAfterBuildMB: Number(after.toFixed(2)), + deltaMB: Number((after - before).toFixed(2)), + }); + } + + return snaps; +} + +async function main(): Promise { + const out = { + timestamp: new Date().toISOString(), + bun: process.versions.bun, + node: process.versions.node, + platform: process.platform, + arch: process.arch, + build: buildSamples(), + match: matchSamples(), + rss: rssSnaps(), + }; + console.log(JSON.stringify(out, null, 2)); +} + +try { + await main(); +} catch (e) { + console.error(e); + process.exit(1); +} diff --git a/packages/router/bench/router.bench.ts b/packages/router/bench/router.bench.ts index fdeb6d8..c9238e8 100644 --- a/packages/router/bench/router.bench.ts +++ b/packages/router/bench/router.bench.ts @@ -1,16 +1,15 @@ +import type { HttpMethod } from '@zipbul/shared'; + import { run, bench, boxplot, summary, do_not_optimize } from 'mitata'; -import type { HttpMethod } from '@zipbul/shared'; +import type { RouterOptions } from '../src/types'; import { Router } from '../src/router'; -import type { RouterOptions } from '../src/types'; +import { printEnv } from './helpers'; -// ── Helpers ── +printEnv(); -function buildRouter( - routes: Array<[string, string, T]>, - options: RouterOptions = {}, -): Router { +function buildRouter(routes: Array<[string, string, T]>, options: RouterOptions = {}): Router { const router = new Router(options); for (const [method, path, value] of routes) { @@ -51,23 +50,12 @@ function generateMixedRoutes(count: number): Array<[string, string, number]> { return routes; } -// ── Route sets ── - -const STATIC_ROUTES_10: Array<[string, string, number]> = generateStaticRoutes(10); const STATIC_ROUTES_100: Array<[string, string, number]> = generateStaticRoutes(100); const STATIC_ROUTES_500: Array<[string, string, number]> = generateStaticRoutes(500); const STATIC_ROUTES_1000: Array<[string, string, number]> = generateStaticRoutes(1000); const MIXED_ROUTES_100: Array<[string, string, number]> = generateMixedRoutes(100); -// ── Pre-built routers ── - -const staticRouter10 = buildRouter(STATIC_ROUTES_10); -const staticRouter100 = buildRouter(STATIC_ROUTES_100); -const staticRouter500 = buildRouter(STATIC_ROUTES_500); -const staticRouter1000 = buildRouter(STATIC_ROUTES_1000); - -const cachedRouter100 = buildRouter(STATIC_ROUTES_100, { enableCache: true, cacheSize: 200 }); -const cachedRouter1000 = buildRouter(STATIC_ROUTES_1000, { enableCache: true, cacheSize: 2000 }); +const staticRouter = buildRouter(STATIC_ROUTES_100); const paramRouter = buildRouter([ ['GET', '/users/:id', 1], @@ -76,13 +64,6 @@ const paramRouter = buildRouter([ ['GET', '/orgs/:orgId/teams/:teamId/members/:memberId', 4], ]); -const paramRouterCached = buildRouter([ - ['GET', '/users/:id', 1], - ['GET', '/users/:id/posts/:postId', 2], - ['GET', '/users/:id/posts/:postId/comments/:commentId', 3], - ['GET', '/orgs/:orgId/teams/:teamId/members/:memberId', 4], -], { enableCache: true, cacheSize: 1000 }); - const wildcardRouter = buildRouter([ ['GET', '/static/*path', 1], ['GET', '/files/*filepath', 2], @@ -90,68 +71,25 @@ const wildcardRouter = buildRouter([ ]); const mixedRouter100 = buildRouter(MIXED_ROUTES_100); -const mixedRouter100Cached = buildRouter(MIXED_ROUTES_100, { enableCache: true, cacheSize: 200 }); -const fullOptionsRouter = buildRouter([ - ['GET', '/users/:id', 1], - ['GET', '/users/:id/posts/:postId', 2], - ['POST', '/users/:id/posts', 3], - ['GET', '/files/*path', 4], - ['GET', '/static/page', 5], -], { - ignoreTrailingSlash: true, - caseSensitive: false, - enableCache: true, - cacheSize: 500, +const fullOptionsRouter = buildRouter( + [ + ['GET', '/users/:id', 1], + ['GET', '/users/:id/posts/:postId', 2], + ['POST', '/users/:id/posts', 3], + ['GET', '/files/*path', 4], + ['GET', '/static/page', 5], + ], + { + ignoreTrailingSlash: true, + pathCaseSensitive: false, + }, +); + +bench('static match (hash bucket, 100 routes)', () => { + do_not_optimize(staticRouter.match('GET', '/api/v1/resource50')); }); -// warm up caches -for (const path of ['/api/v1/resource0', '/api/v1/resource50', '/api/v1/resource99']) { - cachedRouter100.match('GET', path); -} - -for (const path of ['/api/v1/resource0', '/api/v1/resource500', '/api/v1/resource999']) { - cachedRouter1000.match('GET', path); -} - -for (const path of ['/users/42', '/users/42/posts/7', '/users/42/posts/7/comments/1']) { - paramRouterCached.match('GET', path); -} - -for (const path of ['/static/path/0', '/users/1/posts/0', '/files/0/readme.txt']) { - mixedRouter100Cached.match('GET', path); -} - -for (const path of ['/users/42', '/static/page', '/files/docs/readme.md']) { - fullOptionsRouter.match('GET', path); -} - -// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ -// BENCHMARKS -// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ - -// ── 1. Static route match ── - -summary(() => { - bench('static match (10 routes)', () => { - do_not_optimize(staticRouter10.match('GET', '/api/v1/resource5')); - }); - - bench('static match (100 routes)', () => { - do_not_optimize(staticRouter100.match('GET', '/api/v1/resource50')); - }); - - bench('static match (500 routes)', () => { - do_not_optimize(staticRouter500.match('GET', '/api/v1/resource250')); - }); - - bench('static match (1000 routes)', () => { - do_not_optimize(staticRouter1000.match('GET', '/api/v1/resource500')); - }); -}); - -// ── 2. Parametric route match ── - summary(() => { bench('param match: /users/:id', () => { do_not_optimize(paramRouter.match('GET', '/users/42')); @@ -170,8 +108,6 @@ summary(() => { }); }); -// ── 3. Wildcard route match ── - summary(() => { bench('wildcard match: short suffix', () => { do_not_optimize(wildcardRouter.match('GET', '/static/app.js')); @@ -186,64 +122,10 @@ summary(() => { }); }); -// ── 4. Cache hit vs miss ── - -summary(() => { - bench('cache hit (100 routes)', () => { - do_not_optimize(cachedRouter100.match('GET', '/api/v1/resource50')); - }); - - bench('no-cache (100 routes)', () => { - do_not_optimize(staticRouter100.match('GET', '/api/v1/resource50')); - }); - - bench('cache hit (1000 routes)', () => { - do_not_optimize(cachedRouter1000.match('GET', '/api/v1/resource500')); - }); - - bench('no-cache (1000 routes)', () => { - do_not_optimize(staticRouter1000.match('GET', '/api/v1/resource500')); - }); +bench('404 miss (hash bucket, 100 routes)', () => { + do_not_optimize(staticRouter.match('GET', '/nonexistent/path')); }); -// ── 5. Cache hit vs miss (parametric) ── - -summary(() => { - bench('param cache hit: /users/:id', () => { - do_not_optimize(paramRouterCached.match('GET', '/users/42')); - }); - - bench('param no-cache: /users/:id', () => { - do_not_optimize(paramRouter.match('GET', '/users/42')); - }); - - bench('param cache hit: 3-deep', () => { - do_not_optimize(paramRouterCached.match('GET', '/users/42/posts/7/comments/1')); - }); - - bench('param no-cache: 3-deep', () => { - do_not_optimize(paramRouter.match('GET', '/users/42/posts/7/comments/1')); - }); -}); - -// ── 6. Match miss (404) ── - -summary(() => { - bench('404 miss (10 routes)', () => { - do_not_optimize(staticRouter10.match('GET', '/nonexistent/path')); - }); - - bench('404 miss (100 routes)', () => { - do_not_optimize(staticRouter100.match('GET', '/nonexistent/path')); - }); - - bench('404 miss (1000 routes)', () => { - do_not_optimize(staticRouter1000.match('GET', '/nonexistent/path')); - }); -}); - -// ── 7. Mixed route types ── - summary(() => { bench('mixed static hit (100 routes)', () => { do_not_optimize(mixedRouter100.match('GET', '/static/path/15')); @@ -256,18 +138,8 @@ summary(() => { bench('mixed wildcard hit (100 routes)', () => { do_not_optimize(mixedRouter100.match('GET', '/files/0/docs/readme.md')); }); - - bench('mixed cached static hit', () => { - do_not_optimize(mixedRouter100Cached.match('GET', '/static/path/0')); - }); - - bench('mixed cached param hit', () => { - do_not_optimize(mixedRouter100Cached.match('GET', '/users/1/posts/0')); - }); }); -// ── 8. Full options pipeline ── - summary(() => { bench('full-options static match', () => { do_not_optimize(fullOptionsRouter.match('GET', '/Static/Page')); @@ -284,19 +156,9 @@ summary(() => { bench('full-options trailing slash', () => { do_not_optimize(fullOptionsRouter.match('GET', '/Users/42/')); }); - - bench('full-options collapsed slashes', () => { - do_not_optimize(fullOptionsRouter.match('GET', '//Users///42')); - }); }); -// ── 9. Route registration (add + build) ── - boxplot(() => { - bench('add+build 10 static routes', () => { - do_not_optimize(buildRouter(STATIC_ROUTES_10)); - }).gc('inner'); - bench('add+build 100 static routes', () => { do_not_optimize(buildRouter(STATIC_ROUTES_100)); }).gc('inner'); @@ -308,36 +170,18 @@ boxplot(() => { bench('add+build 1000 static routes', () => { do_not_optimize(buildRouter(STATIC_ROUTES_1000)); }).gc('inner'); -}); -boxplot(() => { bench('add+build 100 mixed routes', () => { do_not_optimize(buildRouter(MIXED_ROUTES_100)); }).gc('inner'); - - bench('add+build 100 mixed + cache', () => { - do_not_optimize(buildRouter(MIXED_ROUTES_100, { enableCache: true })); - }).gc('inner'); }); -// ── 10. Regex param match (7-1) ── - const regexParamRouter = buildRouter([ ['GET', '/:id(\\d+)', 1], ['GET', '/:id(\\d+)/comments', 2], ['GET', '/users/:id(\\d+)/posts/:postId(\\d+)', 3], ]); -const regexParamRouterCached = buildRouter([ - ['GET', '/:id(\\d+)', 1], - ['GET', '/:id(\\d+)/comments', 2], - ['GET', '/users/:id(\\d+)/posts/:postId(\\d+)', 3], -], { enableCache: true, cacheSize: 500 }); - -// warm up -regexParamRouterCached.match('GET', '/42'); -regexParamRouterCached.match('GET', '/users/42/posts/7'); - summary(() => { bench('regex param match: /:id(\\d+)', () => { do_not_optimize(regexParamRouter.match('GET', '/42')); @@ -350,30 +194,14 @@ summary(() => { bench('regex param match: /:id(\\d+)/comments', () => { do_not_optimize(regexParamRouter.match('GET', '/42/comments')); }); - - bench('regex param cache hit: /:id(\\d+)', () => { - do_not_optimize(regexParamRouterCached.match('GET', '/42')); - }); }); -// ── 11. Optional param match (7-2) ── - const optionalParamRouter = buildRouter([ ['GET', '/:lang?/docs', 1], ['GET', '/:lang?/docs/:section', 2], ['GET', '/api/:version?/users', 3], ]); -const optionalParamRouterCached = buildRouter([ - ['GET', '/:lang?/docs', 1], - ['GET', '/:lang?/docs/:section', 2], - ['GET', '/api/:version?/users', 3], -], { enableCache: true, cacheSize: 500 }); - -// warm up -optionalParamRouterCached.match('GET', '/en/docs'); -optionalParamRouterCached.match('GET', '/docs'); - summary(() => { bench('optional param match: with lang param (/en/docs)', () => { do_not_optimize(optionalParamRouter.match('GET', '/en/docs')); @@ -386,17 +214,31 @@ summary(() => { bench('optional param match: nested /:lang?/docs/:section', () => { do_not_optimize(optionalParamRouter.match('GET', '/en/docs/intro')); }); +}); - bench('optional param cache hit: with lang', () => { - do_not_optimize(optionalParamRouterCached.match('GET', '/en/docs')); +const interleavedOptionalRouter = buildRouter([['GET', '/api/:v?/users/:id?', 1]]); + +summary(() => { + bench('interleaved optional: drop-middle (/api/users/5)', () => { + do_not_optimize(interleavedOptionalRouter.match('GET', '/api/users/5')); }); - bench('optional param cache hit: without lang', () => { - do_not_optimize(optionalParamRouterCached.match('GET', '/docs')); + bench('interleaved optional: full (/api/v1/users/5)', () => { + do_not_optimize(interleavedOptionalRouter.match('GET', '/api/v1/users/5')); }); }); -// ── 12. Multi-method match (7-3) ── +const optionalRegexRouter = buildRouter([['GET', '/x/:id(\\d+)?', 1]]); + +summary(() => { + bench('optional regex param: present (/x/42)', () => { + do_not_optimize(optionalRegexRouter.match('GET', '/x/42')); + }); + + bench('optional regex param: absent (/x)', () => { + do_not_optimize(optionalRegexRouter.match('GET', '/x')); + }); +}); const multiMethodRouter = buildRouter([ ['GET', '/api/resources/:id', 1], @@ -430,8 +272,6 @@ summary(() => { }); }); -// ── 13. addAll bulk registration (7-4) ── - function generateParamRoutes(count: number): Array<[string, string, number]> { const methods: Array<'GET' | 'POST' | 'PUT' | 'DELETE'> = ['GET', 'POST', 'PUT', 'DELETE']; const routes: Array<[string, string, number]> = []; diff --git a/packages/router/bench/walker-fallbacks.bench.ts b/packages/router/bench/walker-fallbacks.bench.ts new file mode 100644 index 0000000..94e86b2 --- /dev/null +++ b/packages/router/bench/walker-fallbacks.bench.ts @@ -0,0 +1,82 @@ +import { bench, do_not_optimize, run, summary } from 'mitata'; + +import { getRouterInternals } from '../internal'; +import { Router } from '../src/router'; +import { printEnv } from './helpers'; + +printEnv(); + +function pickedWalkerSource(router: Router): string { + const trees = ( + getRouterInternals(router) as unknown as { + matchLayer: { trees: Array<((u: string, s: unknown) => boolean) | null> }; + } + ).matchLayer.trees; + const tree = trees.find(t => t != null); + + return tree === undefined || tree === null ? 'none' : tree.toString(); +} + +function buildCodegenRouter(): Router { + const r = new Router(); + r.add('GET', '/users/:id', 'user'); + r.build(); + + return r; +} + +function buildIterativeRouter(): Router { + const r = new Router(); + + for (let i = 0; i < 25; i++) { + r.add('GET', `/zone${i}/:slug`, `r${i}`); + r.add('GET', `/zone${i}/:slug/sub/:sub`, `r${i}sub`); + } + + r.build(); + + return r; +} + +function buildRecursiveRouter(): Router { + const r = new Router(); + r.add('GET', '/api/v1/:user', 'v1-user'); + r.add('GET', '/api/:ver/users', 'param-version'); + r.add('GET', '/api/v2/posts/:id', 'v2-post'); + r.add('GET', '/api/:ver/posts/:slug', 'param-post'); + r.build(); + + return r; +} + +const codegen = buildCodegenRouter(); +const iterative = buildIterativeRouter(); +const recursive = buildRecursiveRouter(); + +if (!pickedWalkerSource(codegen).includes('compiledSegmentWalk')) { + throw new Error('walker bench setup failed: codegen router did not pick compiledSegmentWalk'); +} + +if (!pickedWalkerSource(iterative).includes('while')) { + throw new Error('walker bench setup failed: iterative router did not pick iterative walker'); +} + +if (!pickedWalkerSource(recursive).includes('return match(')) { + throw new Error('walker bench setup failed: recursive router did not pick recursive walker'); +} + +summary(() => { + bench('walker: codegen segment', () => { + do_not_optimize(codegen.match('GET', '/users/42')); + }); + + bench('walker: iterative fallback', () => { + do_not_optimize(iterative.match('GET', '/zone10/foo/sub/bar')); + }); + + bench('walker: recursive fallback', () => { + do_not_optimize(recursive.match('GET', '/api/v9/posts/hello')); + }); +}); + +await run(); diff --git a/packages/router/bunfig.mutation.toml b/packages/router/bunfig.mutation.toml new file mode 100644 index 0000000..7350268 --- /dev/null +++ b/packages/router/bunfig.mutation.toml @@ -0,0 +1,9 @@ +[test] +# Mutation-testing-only test config (used by Stryker via `bun -c bunfig.mutation.toml`). +# Coverage is intentionally disabled here: Stryker's command runner only needs the +# test pass/fail exit code, and the regular bunfig.toml coverageThreshold would +# otherwise make every run exit non-zero (coverage shortfall != test failure). +onlyFailures = true + +[test.reporter] +dots = true diff --git a/packages/router/bunfig.toml b/packages/router/bunfig.toml index 43a5c17..f654f03 100644 --- a/packages/router/bunfig.toml +++ b/packages/router/bunfig.toml @@ -3,12 +3,7 @@ onlyFailures = true coverage = true coverageReporter = ["text", "lcov"] coverageThreshold = 0.95 -coveragePathIgnorePatterns = [ - "node_modules/**", - "dist/**", - "../shared/**", - "../result/**" -] +coveragePathIgnorePatterns = ["node_modules/**", "dist/**", "../shared/**", "../result/**", "test/**", "**/*.spec.ts"] [test.reporter] dots = true diff --git a/packages/router/bunup.config.ts b/packages/router/bunup.config.ts new file mode 100644 index 0000000..615524e --- /dev/null +++ b/packages/router/bunup.config.ts @@ -0,0 +1,11 @@ +import { defineConfig } from 'bunup'; + +export default defineConfig({ + entry: ['index.ts'], + format: ['esm'], + target: 'bun', + dts: true, + minify: true, + sourcemap: 'linked', + clean: true, +}); diff --git a/packages/router/index.ts b/packages/router/index.ts index 2ba6788..5c75971 100644 --- a/packages/router/index.ts +++ b/packages/router/index.ts @@ -1,16 +1,6 @@ -// ── Public API ── - export { Router } from './src/router'; export { RouterError } from './src/error'; -export type { - RouterOptions, - OptionalParamBehavior, - RegexSafetyOptions, - RouteParams, - RouterErrKind, - RouterErrData, - MatchMeta, - MatchOutput, - RouterWarning, -} from './src/types'; +export { MatchSource, RouterErrorKind } from './src/types'; + +export type { MatchMeta, MatchOutput, RouteParams, RouterErrorData, RouterOptions, RouterPublicApi } from './src/types'; diff --git a/packages/router/internal.spec.ts b/packages/router/internal.spec.ts new file mode 100644 index 0000000..551d722 --- /dev/null +++ b/packages/router/internal.spec.ts @@ -0,0 +1,56 @@ +import { describe, expect, it } from 'bun:test'; + +import { getRouterInternals } from './internal'; +import { Router } from './src/router'; + +describe('getRouterInternals — happy path', () => { + it('returns the live internals wrapper for a freshly constructed Router', () => { + const r = new Router(); + const internals = getRouterInternals(r); + expect(internals).toBeDefined(); + expect(internals.registration).toBeDefined(); + }); + + it('exposes matchImpl + matchLayer only after build() runs', () => { + const r = new Router(); + r.add('GET', '/x', 'x'); + const beforeBuild = getRouterInternals(r); + expect(beforeBuild.matchImpl).toBeUndefined(); + expect(beforeBuild.matchLayer).toBeUndefined(); + + r.build(); + const afterBuild = getRouterInternals(r); + expect(afterBuild.matchImpl).toBeDefined(); + expect(afterBuild.matchLayer).toBeDefined(); + }); + + it('returns a wrapper whose object identity is stable across calls on one instance', () => { + const r = new Router(); + const a = getRouterInternals(r); + const b = getRouterInternals(r); + expect(a).toBe(b); + }); +}); + +describe('getRouterInternals — non-Router probe rejection', () => { + it('throws when called on a plain object missing the internals symbol slot', () => { + const fake = {} as unknown as Router; + expect(() => getRouterInternals(fake)).toThrow(/Router internals slot missing/); + }); + + it('throws when called on an instance of a non-Router class', () => { + class Imposter {} + const fake = new Imposter() as unknown as Router; + expect(() => getRouterInternals(fake)).toThrow(/Router internals slot missing/); + }); + + it('error message identifies the package boundary so callers can route the fix', () => { + const fake = {} as unknown as Router; + try { + getRouterInternals(fake); + throw new Error('expected throw'); + } catch (e) { + expect((e as Error).message).toContain('@zipbul/router'); + } + }); +}); diff --git a/packages/router/internal.ts b/packages/router/internal.ts new file mode 100644 index 0000000..a78ea88 --- /dev/null +++ b/packages/router/internal.ts @@ -0,0 +1,13 @@ +import type { Router, RouterInternals } from './src/router'; + +import { ROUTER_INTERNALS_KEY } from './src/router'; + +export type { RouterInternals } from './src/router'; + +export function getRouterInternals(router: Router): RouterInternals { + const internals = (router as unknown as Record | undefined>)[ROUTER_INTERNALS_KEY]; + if (internals === undefined) { + throw new Error('Router internals slot missing — instance was not constructed by @zipbul/router'); + } + return internals; +} diff --git a/packages/router/knip.json b/packages/router/knip.json new file mode 100644 index 0000000..1271faa --- /dev/null +++ b/packages/router/knip.json @@ -0,0 +1,5 @@ +{ + "$schema": "https://unpkg.com/knip@latest/schema.json", + "entry": ["index.ts", "internal.ts", "src/**/*.spec.ts", "test/**/*.test.ts", "test/**/*.ts", "bench/**/*.ts"], + "project": ["src/**/*.ts", "test/**/*.ts", "bench/**/*.ts"] +} diff --git a/packages/router/package.json b/packages/router/package.json index 7e94440..6856fd4 100644 --- a/packages/router/package.json +++ b/packages/router/package.json @@ -1,7 +1,18 @@ { "name": "@zipbul/router", "version": "0.2.3", - "description": "High-performance radix-tree URL router for Bun", + "description": "High-performance segment-tree URL router for Bun", + "keywords": [ + "bun", + "http", + "router", + "segment-tree", + "typescript", + "url-router", + "zipbul" + ], + "homepage": "https://github.com/zipbul/toolkit/tree/main/packages/router#readme", + "bugs": "https://github.com/zipbul/toolkit/issues", "license": "MIT", "author": "Junhyung Park (https://github.com/parkrevil)", "repository": { @@ -9,20 +20,9 @@ "url": "https://github.com/zipbul/toolkit", "directory": "packages/router" }, - "bugs": "https://github.com/zipbul/toolkit/issues", - "homepage": "https://github.com/zipbul/toolkit/tree/main/packages/router#readme", - "keywords": [ - "router", - "radix-tree", - "url-router", - "http", - "bun", - "typescript", - "zipbul" + "files": [ + "dist" ], - "engines": { - "bun": ">=1.0.0" - }, "type": "module", "module": "dist/index.js", "types": "dist/index.d.ts", @@ -32,31 +32,45 @@ "import": "./dist/index.js" } }, - "files": [ - "dist" - ], - "sideEffects": false, "publishConfig": { "provenance": true }, "scripts": { - "build": "bun build index.ts --outdir dist --target bun --format esm --packages external --production && tsc -p tsconfig.build.json", - "test": "bun test", "bench": "bun run bench/router.bench.ts", - "coverage": "bun test --coverage" + "build": "bunup", + "coverage": "bun test --coverage", + "deps:check": "dpdm --no-warning --no-tree --no-output -T index.ts \"src/**/*.ts\"", + "format": "oxfmt", + "format:check": "oxfmt --check", + "knip": "knip", + "lint": "oxlint", + "test": "bun test", + "test:mutation": "stryker run", + "typecheck": "tsc --noEmit" }, "dependencies": { - "@zipbul/result": "workspace:*", - "@zipbul/shared": "workspace:*" + "@zipbul/result": "workspace:*" }, "devDependencies": { + "@stryker-mutator/core": "^9.6.1", "@types/bun": "latest", + "@zipbul/shared": "workspace:*", + "bunup": "^0.16.31", + "dpdm": "^4.2.0", "fast-check": "^3.0.0", "find-my-way": "^9.5.0", "hono": "^4.12.3", + "knip": "^6.14.1", "koa-tree-router": "^0.13.1", "memoirist": "^0.4.0", "mitata": "^1.0.34", - "rou3": "^0.7.12" + "oxfmt": "^0.51.0", + "oxlint": "^1.66.0", + "radix3": "^1.1.2", + "rou3": "^0.7.12", + "typescript": "^5" + }, + "engines": { + "bun": ">=1.0.0" } } diff --git a/packages/router/src/builder/assert.spec.ts b/packages/router/src/builder/assert.spec.ts deleted file mode 100644 index 9b16489..0000000 --- a/packages/router/src/builder/assert.spec.ts +++ /dev/null @@ -1,16 +0,0 @@ -import { describe, it, expect } from 'bun:test'; -import { assertDefined } from './assert'; - -describe('assertDefined', () => { - it('should not throw when value is defined', () => { - expect(() => assertDefined('hello', 'should not throw')).not.toThrow(); - }); - - it('should throw with given message when value is undefined', () => { - expect(() => assertDefined(undefined, 'invariant violated')).toThrow('invariant violated'); - }); - - it('should not throw when value is 0 (falsy but defined)', () => { - expect(() => assertDefined(0 as number | undefined, 'should not throw')).not.toThrow(); - }); -}); diff --git a/packages/router/src/builder/assert.ts b/packages/router/src/builder/assert.ts deleted file mode 100644 index 2757610..0000000 --- a/packages/router/src/builder/assert.ts +++ /dev/null @@ -1,10 +0,0 @@ -/** - * assertDefined — invariant violation helper. - * - * Use for values that should be defined by construction - * (programming error, not user input). If `value` is `undefined`, - * the router has a bug and crashing is the correct behavior. - */ -export function assertDefined(value: T | undefined, msg: string): asserts value is T { - if (value === undefined) throw new Error(msg); // internal invariant violation — unrecoverable -} diff --git a/packages/router/src/builder/constants.spec.ts b/packages/router/src/builder/constants.spec.ts new file mode 100644 index 0000000..7f452ec --- /dev/null +++ b/packages/router/src/builder/constants.spec.ts @@ -0,0 +1,39 @@ +import { describe, expect, it } from 'bun:test'; + +import { CC_COLON, CC_PLUS, CC_SLASH, CC_STAR, END_ANCHOR_PATTERN, START_ANCHOR_PATTERN } from './constants'; + +describe('regex anchor patterns', () => { + it('START_ANCHOR_PATTERN matches a literal leading ^', () => { + expect(START_ANCHOR_PATTERN.test('^abc')).toBe(true); + expect(START_ANCHOR_PATTERN.test('abc')).toBe(false); + expect(START_ANCHOR_PATTERN.test('a^')).toBe(false); + }); + + it('END_ANCHOR_PATTERN matches a literal trailing $', () => { + expect(END_ANCHOR_PATTERN.test('abc$')).toBe(true); + expect(END_ANCHOR_PATTERN.test('abc')).toBe(false); + expect(END_ANCHOR_PATTERN.test('$abc')).toBe(false); + }); +}); + +describe('path-syntax char codes mirror ASCII', () => { + it('CC_SLASH === 47 (forward slash)', () => { + expect(CC_SLASH).toBe(47); + expect('/'.charCodeAt(0)).toBe(CC_SLASH); + }); + + it('CC_STAR === 42 (asterisk)', () => { + expect(CC_STAR).toBe(42); + expect('*'.charCodeAt(0)).toBe(CC_STAR); + }); + + it('CC_PLUS === 43 (plus sign)', () => { + expect(CC_PLUS).toBe(43); + expect('+'.charCodeAt(0)).toBe(CC_PLUS); + }); + + it('CC_COLON === 58 (colon)', () => { + expect(CC_COLON).toBe(58); + expect(':'.charCodeAt(0)).toBe(CC_COLON); + }); +}); diff --git a/packages/router/src/builder/constants.ts b/packages/router/src/builder/constants.ts index 7578170..7671974 100644 --- a/packages/router/src/builder/constants.ts +++ b/packages/router/src/builder/constants.ts @@ -1,6 +1,7 @@ -export const FNV_OFFSET = 0x811c9dc5; -export const FNV_PRIME = 0x01000193; -export const INLINE_THRESHOLD = 4; -export const START_ANCHOR_PATTERN = /^\^/; -export const END_ANCHOR_PATTERN = /\$$/; -export const BACKREFERENCE_PATTERN = /\\(?:\d+|k<[^>]+>)/; +export const START_ANCHOR_PATTERN: RegExp = /^\^/; +export const END_ANCHOR_PATTERN: RegExp = /\$$/; + +export const CC_SLASH = 47; +export const CC_STAR = 42; +export const CC_PLUS = 43; +export const CC_COLON = 58; diff --git a/packages/router/src/builder/index.ts b/packages/router/src/builder/index.ts new file mode 100644 index 0000000..8befc52 --- /dev/null +++ b/packages/router/src/builder/index.ts @@ -0,0 +1,3 @@ +export { PathParser } from './path-parser'; +export { MAX_OPTIONAL_SEGMENTS_PER_ROUTE, expandOptional } from './route-expand'; +export { validateMethodToken } from './method-policy'; diff --git a/packages/router/src/builder/method-policy.spec.ts b/packages/router/src/builder/method-policy.spec.ts new file mode 100644 index 0000000..4badc68 --- /dev/null +++ b/packages/router/src/builder/method-policy.spec.ts @@ -0,0 +1,113 @@ +import { describe, test, expect } from 'bun:test'; + +import { firstBuildIssue } from '../../test/test-utils'; +import { Router } from '../router'; +import { RouterErrorKind } from '../types'; + +describe('method token grammar accepts valid custom tokens', () => { + test.each([['PROPFIND'], ['PATCH+X'], ['foo'], ['get'], ['CUSTOM-METHOD_X.0'], ["M!#$%&'*+-.^_`|~0"]])('accepts %s', method => { + const r = new Router(); + expect(() => { + r.add(method, '/x', 'h'); + r.build(); + }).not.toThrow(); + expect(r.match(method, '/x')?.value).toBe('h'); + }); + + test('accepts a method exactly 64 ASCII bytes (boundary)', () => { + const r = new Router(); + const m = 'X'.repeat(64); + expect(() => { + r.add(m, '/x', 'h'); + r.build(); + }).not.toThrow(); + }); + + test('case-sensitive: GET and get are distinct registrations', () => { + const r = new Router(); + r.add('GET', '/x', 'upper'); + r.add('get', '/x', 'lower'); + r.build(); + expect(r.match('GET', '/x')?.value).toBe('upper'); + expect(r.match('get', '/x')?.value).toBe('lower'); + }); +}); + +describe('32-method limit boundary', () => { + test('accepts exactly 32 distinct method tokens (7 default + 25 custom)', () => { + const r = new Router(); + for (let i = 0; i < 25; i++) { + r.add(`CUSTOM${i}`, '/x', `h${i}`); + } + expect(() => r.build()).not.toThrow(); + }); + + test('rejects the 33rd distinct method with method-limit', () => { + const r = new Router(); + for (let i = 0; i < 26; i++) { + r.add(`CUSTOM${i}`, '/x', `h${i}`); + } + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(RouterErrorKind.MethodLimit); + }); +}); + +describe('HEAD and OPTIONS get no implicit fallback', () => { + test('HEAD does not match a GET-only registration', () => { + const r = new Router(); + r.add('GET', '/x', 'g'); + r.build(); + expect(r.match('HEAD', '/x')).toBeNull(); + expect(r.allowedMethods('/x')).toEqual(['GET']); + }); + + test('OPTIONS is not generated implicitly', () => { + const r = new Router(); + r.add('GET', '/x', 'g'); + r.add('POST', '/x', 'p'); + r.build(); + expect(r.match('OPTIONS', '/x')).toBeNull(); + expect([...r.allowedMethods('/x')].sort()).toEqual(['GET', 'POST']); + }); +}); + +describe('method token validation', () => { + test('empty method must throw on add()/build()', () => { + const r = new Router(); + expect(() => { + r.add('', '/x', 'h'); + r.build(); + }).toThrow(); + }); + + test('whitespace method "GET POST" must throw', () => { + const r = new Router(); + expect(() => { + r.add('GET POST', '/x', 'h'); + r.build(); + }).toThrow(); + }); + + test('method with control char "GET\\t" must throw', () => { + const r = new Router(); + expect(() => { + r.add('GET\t', '/x', 'h'); + r.build(); + }).toThrow(); + }); + + test('method with delimiter "GET/" must throw', () => { + const r = new Router(); + expect(() => { + r.add('GET/', '/x', 'h'); + r.build(); + }).toThrow(); + }); + + test('long valid-tchar method tokens are accepted (no length cap; RFC 9110 §2.3)', () => { + const r = new Router(); + r.add('A'.repeat(1024), '/x', 'h'); + r.build(); + expect(r.match('A'.repeat(1024), '/x')?.value).toBe('h'); + }); +}); diff --git a/packages/router/src/builder/method-policy.ts b/packages/router/src/builder/method-policy.ts new file mode 100644 index 0000000..d9ea94c --- /dev/null +++ b/packages/router/src/builder/method-policy.ts @@ -0,0 +1,53 @@ +import type { Result } from '@zipbul/result'; + +import { err } from '@zipbul/result'; + +import type { RouterErrorData } from '../types'; + +import { RouterErrorKind } from '../types'; + +const TCHAR_TABLE = (() => { + const t = new Uint8Array(256); + for (let c = 0x41; c <= 0x5a; c++) { + t[c] = 1; + } + for (let c = 0x61; c <= 0x7a; c++) { + t[c] = 1; + } + for (let c = 0x30; c <= 0x39; c++) { + t[c] = 1; + } + for (const c of [0x21, 0x23, 0x24, 0x25, 0x26, 0x27, 0x2a, 0x2b, 0x2d, 0x2e, 0x5e, 0x5f, 0x60, 0x7c, 0x7e]) { + t[c] = 1; + } + return t; +})(); + +function isValidMethodToken(method: string): boolean { + const len = method.length; + for (let i = 0; i < len; i++) { + if (TCHAR_TABLE[method.charCodeAt(i)] !== 1) { + return false; + } + } + return true; +} + +export function validateMethodToken(method: string): Result { + if (method.length === 0) { + return err({ + kind: RouterErrorKind.MethodEmpty, + message: 'HTTP method must not be empty.', + suggestion: 'Provide a non-empty method token (e.g., GET, POST, custom token).', + }); + } + if (!isValidMethodToken(method)) { + return err({ + kind: RouterErrorKind.MethodInvalidToken, + message: `HTTP method contains a character outside the token grammar: '${method}'`, + method, + suggestion: "Use only HTTP token characters: alphanumerics + ! # $ % & ' * + - . ^ _ ` | ~.", + }); + } + return undefined; +} diff --git a/packages/router/src/builder/optional-param-defaults.spec.ts b/packages/router/src/builder/optional-param-defaults.spec.ts deleted file mode 100644 index 88edd43..0000000 --- a/packages/router/src/builder/optional-param-defaults.spec.ts +++ /dev/null @@ -1,63 +0,0 @@ -import { describe, it, expect } from 'bun:test'; - -import { OptionalParamDefaults } from './optional-param-defaults'; - -describe('OptionalParamDefaults', () => { - it('should not apply any defaults when behavior is omit', () => { - const defaults = new OptionalParamDefaults('omit'); - defaults.record(0, ['lang']); - - const params: Record = {}; - defaults.apply(0, params); - - expect(params).toEqual({}); - }); - - it('should set missing params to undefined when behavior is setUndefined', () => { - const defaults = new OptionalParamDefaults('setUndefined'); - defaults.record(0, ['lang', 'version']); - - const params: Record = {}; - defaults.apply(0, params); - - expect(params).toEqual({ lang: undefined, version: undefined }); - }); - - it('should set missing params to empty string when behavior is setEmptyString', () => { - const defaults = new OptionalParamDefaults('setEmptyString'); - defaults.record(0, ['lang']); - - const params: Record = {}; - defaults.apply(0, params); - - expect(params).toEqual({ lang: '' }); - }); - - it('should not override param value that already exists', () => { - const defaults = new OptionalParamDefaults('setUndefined'); - defaults.record(0, ['lang']); - - const params: Record = { lang: 'en' }; - defaults.apply(0, params); - - expect(params.lang).toBe('en'); - }); - - it('should do nothing when apply is called for a key that was never recorded', () => { - const defaults = new OptionalParamDefaults('setUndefined'); - const params: Record = {}; - defaults.apply(99, params); - - expect(params).toEqual({}); - }); - - it('should use default behavior setUndefined when no behavior arg given', () => { - const defaults = new OptionalParamDefaults(); - defaults.record(5, ['x']); - - const params: Record = {}; - defaults.apply(5, params); - - expect(params.x).toBeUndefined(); - }); -}); diff --git a/packages/router/src/builder/optional-param-defaults.ts b/packages/router/src/builder/optional-param-defaults.ts deleted file mode 100644 index 153baa2..0000000 --- a/packages/router/src/builder/optional-param-defaults.ts +++ /dev/null @@ -1,43 +0,0 @@ -import type { OptionalParamBehavior, RouteParams } from '../types'; - -export class OptionalParamDefaults { - private readonly behavior: OptionalParamBehavior; - private readonly defaults = new Map(); - private readonly defaultValue: string | undefined; - - constructor(behavior: OptionalParamBehavior = 'setUndefined') { - this.behavior = behavior; - this.defaultValue = behavior === 'setEmptyString' ? '' : undefined; - } - - record(key: number, names: readonly string[]): void { - if (this.behavior === 'omit') { - return; - } - - this.defaults.set(key, names); - } - - apply(key: number, params: RouteParams): void { - if (this.behavior === 'omit') { - return; - } - - const defaults = this.defaults.get(key); - - if (defaults === undefined) { - return; - } - - const val = this.defaultValue; - const len = defaults.length; - - for (let i = 0; i < len; i++) { - const name = defaults[i]; - - if (typeof name === 'string' && name.length > 0 && !(name in params)) { - params[name] = val; - } - } - } -} diff --git a/packages/router/src/builder/path-parser.spec.ts b/packages/router/src/builder/path-parser.spec.ts index b937c5d..a7e5a15 100644 --- a/packages/router/src/builder/path-parser.spec.ts +++ b/packages/router/src/builder/path-parser.spec.ts @@ -1,15 +1,17 @@ import { describe, it, expect } from 'bun:test'; -import { isErr } from '@zipbul/result'; +import type { PathPart } from '../tree'; +import type { PathParserConfig } from './path-parser'; + +import { expectOk, expectErrData } from '../../test/test-utils'; +import { PathPartType, WildcardOrigin } from '../tree'; +import { RouterErrorKind } from '../types'; import { PathParser } from './path-parser'; -import type { PathParserConfig, PathPart } from './path-parser'; function defaultConfig(overrides: Partial = {}): PathParserConfig { return { caseSensitive: true, ignoreTrailingSlash: true, - maxSegmentLength: 256, - regexSafety: { mode: 'error', maxLength: 256, forbidBacktrackingTokens: true, forbidBackreferences: true }, ...overrides, }; } @@ -23,44 +25,46 @@ describe('PathParser', () => { describe('basic validation', () => { it('should reject empty path', () => { const result = parse(''); - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('route-parse'); + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.PathMissingLeadingSlash); }); it('should reject path not starting with /', () => { const result = parse('users'); - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('route-parse'); + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.PathMissingLeadingSlash); }); it('should accept root path /', () => { const result = parse('/'); - expect(isErr(result)).toBe(false); - if (!isErr(result)) { - expect(result.normalized).toBe('/'); - expect(result.isDynamic).toBe(false); - expect(result.parts).toEqual([{ type: 'static', value: '/' }]); - } + const ok = expectOk(result); + expect(ok.normalized).toBe('/'); + expect(ok.isDynamic).toBe(false); + expect(ok.parts).toEqual([{ type: PathPartType.Static, value: '/', segments: [] }]); }); }); describe('static paths', () => { it('should parse simple static path', () => { const result = parse('/users'); - expect(isErr(result)).toBe(false); - if (!isErr(result)) { - expect(result.normalized).toBe('/users'); - expect(result.isDynamic).toBe(false); - expect(result.parts).toEqual([{ type: 'static', value: '/users' }]); - } + const ok = expectOk(result); + expect(ok.normalized).toBe('/users'); + expect(ok.isDynamic).toBe(false); + expect(ok.parts).toEqual([{ type: PathPartType.Static, value: '/users', segments: ['users'] }]); }); it('should parse multi-segment static path', () => { const result = parse('/api/v1/users'); - expect(isErr(result)).toBe(false); - if (!isErr(result)) { - expect(result.normalized).toBe('/api/v1/users'); - expect(result.parts).toEqual([{ type: 'static', value: '/api/v1/users' }]); + const ok = expectOk(result); + expect(ok.normalized).toBe('/api/v1/users'); + expect(ok.parts).toEqual([{ type: PathPartType.Static, value: '/api/v1/users', segments: ['api', 'v1', 'users'] }]); + }); + + it('should reject repeated slashes that create empty segments', () => { + for (const path of ['/api//users', '//', '/a///b']) { + const result = parse(path); + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.PathEmptySegment); } }); }); @@ -68,194 +72,180 @@ describe('PathParser', () => { describe('param paths', () => { it('should parse single param', () => { const result = parse('/users/:id'); - expect(isErr(result)).toBe(false); - if (!isErr(result)) { - expect(result.isDynamic).toBe(true); - expect(result.parts).toEqual([ - { type: 'static', value: '/users/' }, - { type: 'param', name: 'id', pattern: null, optional: false }, - ]); - } + const ok = expectOk(result); + expect(ok.isDynamic).toBe(true); + expect(ok.parts).toEqual([ + { type: PathPartType.Static, value: '/users/', segments: ['users'] }, + { type: PathPartType.Param, name: 'id', pattern: null, optional: false }, + ]); }); it('should parse multiple params', () => { const result = parse('/users/:userId/posts/:postId'); - expect(isErr(result)).toBe(false); - if (!isErr(result)) { - expect(result.isDynamic).toBe(true); - expect(result.parts.length).toBe(4); - expect(result.parts[1]).toEqual({ type: 'param', name: 'userId', pattern: null, optional: false }); - expect(result.parts[3]).toEqual({ type: 'param', name: 'postId', pattern: null, optional: false }); - } + const ok = expectOk(result); + expect(ok.isDynamic).toBe(true); + expect(ok.parts.length).toBe(4); + expect(ok.parts[1]).toEqual({ type: PathPartType.Param, name: 'userId', pattern: null, optional: false }); + expect(ok.parts[3]).toEqual({ type: PathPartType.Param, name: 'postId', pattern: null, optional: false }); }); it('should parse param with regex pattern', () => { - const result = parse('/users/:id{\\d+}'); - expect(isErr(result)).toBe(false); - if (!isErr(result)) { - expect(result.isDynamic).toBe(true); - const paramPart = result.parts.find(p => p.type === 'param') as Extract; - expect(paramPart.name).toBe('id'); - expect(paramPart.pattern).toBe('\\d+'); - } + const result = parse('/users/:id(\\d+)'); + const ok = expectOk(result); + expect(ok.isDynamic).toBe(true); + const paramPart = ok.parts.find(p => p.type === PathPartType.Param) as Extract; + expect(paramPart.name).toBe('id'); + expect(paramPart.pattern).toBe('\\d+'); + }); + + it('should reject anchored regex pattern sources at parse time', () => { + const result = parse('/users/:id(^\\d+$)'); + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.RouteParse); }); it('should parse optional param', () => { const result = parse('/users/:id?'); - expect(isErr(result)).toBe(false); - if (!isErr(result)) { - const paramPart = result.parts.find(p => p.type === 'param') as Extract; - expect(paramPart.optional).toBe(true); - } + const ok = expectOk(result); + const paramPart = ok.parts.find(p => p.type === PathPartType.Param) as Extract; + expect(paramPart.optional).toBe(true); }); it('should reject duplicate param names', () => { const result = parse('/users/:id/posts/:id'); - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('param-duplicate'); + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.ParamDuplicate); }); it('should reject empty param name', () => { const result = parse('/users/:'); - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('route-parse'); + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.RouteParse); }); it('should reject unclosed regex pattern', () => { - const result = parse('/users/:id{\\d+'); - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('route-parse'); + const result = parse('/users/:id(\\d+'); + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.RouteParse); + }); + + it('should accept the boundary characters of each valid param-name range (A Z a z 0 9 _)', () => { + // Non-first chars exercise the letter/digit/underscore range edges: + // 'A'=65 'Z'=90 'a'=97 'z'=122 '0'=48 '9'=57 '_'=95. + for (const name of ['idA', 'idZ', 'ida', 'idz', 'id0', 'id9', 'id_']) { + const ok = expectOk(parse(`/x/:${name}`)); + const paramPart = ok.parts.find(p => p.type === PathPartType.Param) as Extract; + expect(paramPart.name).toBe(name); + } + }); + + it('should reject whitespace-only regex `( )` as parse error', () => { + const result = parse('/users/:id( )'); + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.RouteParse); }); }); describe('wildcard paths', () => { it('should parse star wildcard', () => { const result = parse('/files/*path'); - expect(isErr(result)).toBe(false); - if (!isErr(result)) { - expect(result.isDynamic).toBe(true); - expect(result.parts[result.parts.length - 1]).toEqual({ - type: 'wildcard', name: 'path', origin: 'star', - }); - } + const ok = expectOk(result); + expect(ok.isDynamic).toBe(true); + expect(ok.parts[ok.parts.length - 1]).toEqual({ + type: PathPartType.Wildcard, + name: 'path', + origin: WildcardOrigin.Star, + }); }); it('should parse multi wildcard with +', () => { const result = parse('/files/*path+'); - expect(isErr(result)).toBe(false); - if (!isErr(result)) { - expect(result.parts[result.parts.length - 1]).toEqual({ - type: 'wildcard', name: 'path', origin: 'multi', - }); - } + const ok = expectOk(result); + expect(ok.parts[ok.parts.length - 1]).toEqual({ + type: PathPartType.Wildcard, + name: 'path', + origin: WildcardOrigin.Multi, + }); }); it('should use * as default wildcard name', () => { const result = parse('/files/*'); - expect(isErr(result)).toBe(false); - if (!isErr(result)) { - expect(result.parts[result.parts.length - 1]).toEqual({ - type: 'wildcard', name: '*', origin: 'star', - }); - } + const ok = expectOk(result); + expect(ok.parts[ok.parts.length - 1]).toEqual({ + type: PathPartType.Wildcard, + name: '*', + origin: WildcardOrigin.Star, + }); }); it('should reject wildcard not at last segment', () => { const result = parse('/files/*path/extra'); - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('route-parse'); + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.RouteParse); }); - it('should parse :name+ as multi wildcard', () => { + it('should reject :name+ colon-form wildcard sugar (use *name+ instead)', () => { const result = parse('/files/:path+'); - expect(isErr(result)).toBe(false); - if (!isErr(result)) { - expect(result.parts[result.parts.length - 1]).toEqual({ - type: 'wildcard', name: 'path', origin: 'multi', - }); - } + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.RouteParse); }); - it('should parse :name* as star wildcard', () => { + it('should reject :name* colon-form wildcard sugar (use *name instead)', () => { const result = parse('/files/:path*'); - expect(isErr(result)).toBe(false); - if (!isErr(result)) { - expect(result.parts[result.parts.length - 1]).toEqual({ - type: 'wildcard', name: 'path', origin: 'star', - }); - } + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.RouteParse); }); it('should reject :name+ not at last segment', () => { const result = parse('/files/:path+/extra'); - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('route-parse'); + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.RouteParse); + }); + + it('should reject mixed optional and wildcard decorators', () => { + for (const path of ['/:a+?', '/:a*?', '/:a?+', '/:a?*']) { + const result = parse(path); + const data = expectErrData(result); + expect([RouterErrorKind.RouteParse, RouterErrorKind.PathQuery]).toContain(data.kind); + } }); }); describe('normalization', () => { it('should case-fold static segments when caseSensitive=false', () => { const result = parse('/Users/Profile', { caseSensitive: false }); - expect(isErr(result)).toBe(false); - if (!isErr(result)) { - expect(result.normalized).toBe('/users/profile'); - } + const ok = expectOk(result); + expect(ok.normalized).toBe('/users/profile'); }); it('should preserve param name case when caseSensitive=false', () => { const result = parse('/users/:UserId', { caseSensitive: false }); - expect(isErr(result)).toBe(false); - if (!isErr(result)) { - const paramPart = result.parts.find(p => p.type === 'param') as Extract; - expect(paramPart.name).toBe('UserId'); - } + const ok = expectOk(result); + const paramPart = ok.parts.find(p => p.type === PathPartType.Param) as Extract; + expect(paramPart.name).toBe('UserId'); }); it('should remove trailing slash when ignoreTrailingSlash=true', () => { const result = parse('/users/', { ignoreTrailingSlash: true }); - expect(isErr(result)).toBe(false); - if (!isErr(result)) { - expect(result.normalized).toBe('/users'); - } - }); - - it('should reject static segment exceeding maxSegmentLength', () => { - const result = parse('/a/' + 'x'.repeat(300), { maxSegmentLength: 256 }); - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('segment-limit'); - }); - - it('should not enforce maxSegmentLength on param segments', () => { - const longName = 'a'.repeat(300); - const result = parse(`/users/:${longName}`, { maxSegmentLength: 256 }); - // Param segment names are not checked against maxSegmentLength - expect(isErr(result)).toBe(false); + const ok = expectOk(result); + expect(ok.normalized).toBe('/users'); }); }); - describe('regex safety', () => { - it('should reject unsafe regex patterns with mode=error', () => { - const result = parse('/test/:val{(a+)+}', { - regexSafety: { mode: 'error', maxLength: 256, forbidBacktrackingTokens: true, forbidBackreferences: true }, - }); - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('regex-unsafe'); + describe('regex pattern body — router accepts any syntactically valid regex', () => { + it('accepts a vulnerable nested-quantifier pattern (user responsibility)', () => { + const result = parse('/test/:val((?:a+)+)'); + expectOk(result); }); - it('should allow safe regex patterns', () => { - const result = parse('/test/:val{\\d+}', { - regexSafety: { mode: 'error', maxLength: 256, forbidBacktrackingTokens: true, forbidBackreferences: true }, - }); - expect(isErr(result)).toBe(false); + it('accepts a backreference pattern (user responsibility)', () => { + const result = parse('/test/:val((?:\\w+)\\1)'); + expectOk(result); }); - }); - describe('segment/param limits', () => { - it('should reject paths with more than 64 segments', () => { - const path = '/' + Array.from({ length: 65 }, (_, i) => `s${i}`).join('/'); - const result = parse(path); - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('segment-limit'); + it('accepts a standard digit-only constraint', () => { + const result = parse('/test/:val(\\d+)'); + expectOk(result); }); }); }); diff --git a/packages/router/src/builder/path-parser.ts b/packages/router/src/builder/path-parser.ts index 6eea645..2bb4e44 100644 --- a/packages/router/src/builder/path-parser.ts +++ b/packages/router/src/builder/path-parser.ts @@ -1,424 +1,438 @@ import type { Result } from '@zipbul/result'; -import type { RegexSafetyOptions, RouterErrData, RouterWarning } from '../types'; import { err, isErr } from '@zipbul/result'; -import { PatternUtils } from './pattern-utils'; -import { assessRegexSafety } from './regex-safety'; -// ── Types ── +import type { PathPart } from '../tree'; +import type { RouterErrorData } from '../types'; -export type PathPart = - | { type: 'static'; value: string } - | { type: 'param'; name: string; pattern: string | null; optional: boolean } - | { type: 'wildcard'; name: string; origin: 'star' | 'multi' }; +import { PathPartType, WildcardOrigin } from '../tree'; +import { RouterErrorKind } from '../types'; +import { CC_COLON, CC_PLUS, CC_STAR } from './constants'; +import { validatePathChars } from './path-policy'; +import { normalizeParamPatternSource } from './pattern-utils'; -export interface ParseResult { +interface ParseResult { parts: PathPart[]; normalized: string; isDynamic: boolean; } -export interface PathParserConfig { +interface PathParserConfig { caseSensitive: boolean; ignoreTrailingSlash: boolean; - maxSegmentLength: number; - regexSafety?: RegexSafetyOptions; - regexAnchorPolicy?: 'warn' | 'error' | 'silent'; - onWarn?: (warning: RouterWarning) => void; } -// ── PathParser ── - -export class PathParser { +class PathParser { private readonly config: PathParserConfig; - private readonly patternUtils: PatternUtils; private readonly activeParams = new Set(); constructor(config: PathParserConfig) { this.config = config; - this.patternUtils = new PatternUtils({ - regexSafety: config.regexSafety, - regexAnchorPolicy: config.regexAnchorPolicy, - onWarn: config.onWarn, - }); } - parse(path: string): Result { - // 1. Basic validation - if (path.length === 0 || path.charCodeAt(0) !== 47) { - return err({ - kind: 'route-parse', - message: `Path must start with '/': ${path}`, - path, - }); + parse(path: string): Result { + const validation = this.validatePath(path); + + if (validation !== null) { + return validation; } - // 2. Normalize segments - const normResult = this.normalizeSegments(path); + const tokenizeResult = this.tokenize(path); - if (isErr(normResult)) { - return normResult; + if (isErr(tokenizeResult)) { + return tokenizeResult; } - const { segments, normalized } = normResult; + const { segments, normalized } = tokenizeResult; - // 2b. Validate segment count - if (segments.length > 64) { - return err({ - kind: 'segment-limit', - message: `Path has ${segments.length} segments, exceeding the maximum of 64: ${path}`, - path, - }); + return this.parseTokens(segments, normalized, path); + } + + private validatePath(path: string): Result | null { + const result = validatePathChars(path); + if (isErr(result)) { + return result; } + return null; + } - // 2c. Validate param count - let paramCount = 0; + private tokenize(path: string): Result<{ segments: string[]; normalized: string }, RouterErrorData> { + const segments: string[] = []; + const len = path.length; + if (len > 1) { + let start = 1; + for (let i = 1; i < len; i++) { + if (path.charCodeAt(i) === 47) { + segments.push(path.substring(start, i)); + start = i + 1; + } + } + segments.push(path.substring(start)); + } - for (const seg of segments) { - const fc = seg.charCodeAt(0); + let trimmedTrailingSlash = false; + if (this.config.ignoreTrailingSlash) { + if (segments.length > 0 && segments[segments.length - 1] === '') { + segments.pop(); + trimmedTrailingSlash = true; + } + } - if (fc === 58 || fc === 42) { // ':' or '*' - paramCount++; + const caseSensitive = this.config.caseSensitive; + let caseChanged = false; + let iriChanged = false; + + for (let i = 0; i < segments.length; i++) { + let seg = segments[i]!; + + if (seg === '') { + return err({ + kind: RouterErrorKind.PathEmptySegment, + message: `Path must not contain empty segments: ${path}`, + path, + suggestion: 'Collapse repeated slashes or register a single canonical path.', + }); + } + + const firstChar = seg.charCodeAt(0); + const isDynamic = firstChar === CC_COLON || firstChar === CC_STAR; + + if (isDynamic) { + continue; + } + + let hasNonAscii = false; + for (let j = 0; j < seg.length; j++) { + if (seg.charCodeAt(j) >= 0x80) { + hasNonAscii = true; + break; + } + } + if (hasNonAscii) { + seg = normalizeIriSegment(seg); + segments[i] = seg; + iriChanged = true; + } + + if (!caseSensitive) { + const lowered = seg.toLowerCase(); + if (lowered !== seg) { + caseChanged = true; + } + segments[i] = lowered; } } - if (paramCount > 32) { - return err({ - kind: 'segment-limit', - message: `Path has ${paramCount} parameters, exceeding the maximum of 32: ${path}`, - path, - }); + let normalized: string; + if (segments.length === 0) { + normalized = '/'; + } else if (caseChanged || iriChanged) { + normalized = '/' + segments.join('/'); + } else if (trimmedTrailingSlash) { + normalized = path.substring(0, path.length - 1); + } else { + normalized = path; } - // 3. Parse segments into PathParts + return { segments, normalized }; + } + + private parseTokens(segments: string[], normalized: string, path: string): Result { this.activeParams.clear(); const parts: PathPart[] = []; + const acc: StaticAccumulator = { buf: '/', segments: [] }; let isDynamic = false; - let staticBuf = '/'; for (let i = 0; i < segments.length; i++) { const seg = segments[i]!; const firstChar = seg.charCodeAt(0); + const isLast = i === segments.length - 1; - if (firstChar === 58) { // ':' - // Flush static buffer - if (staticBuf.length > 0) { - parts.push({ type: 'static', value: staticBuf }); - staticBuf = ''; - } - + if (firstChar === CC_COLON) { + flushStaticBuffer(acc, parts); isDynamic = true; - const paramResult = this.parseParam(seg, path); - if (isErr(paramResult)) { return paramResult; } - - // If parseParam returned a wildcard (from :name+ or :name* syntax) - if (paramResult.type === 'wildcard') { - if (i !== segments.length - 1) { - return err({ - kind: 'route-parse', - message: `Wildcard ':${paramResult.name}+' must be the last segment: ${path}`, - path, - }); - } - - parts.push(paramResult); - break; - } - parts.push(paramResult); - - // Add '/' separator after param (if not last segment) - if (i < segments.length - 1) { - staticBuf = '/'; + if (!isLast) { + acc.buf = '/'; } - } else if (firstChar === 42) { // '*' - // Flush static buffer - if (staticBuf.length > 0) { - parts.push({ type: 'static', value: staticBuf }); - staticBuf = ''; - } - + } else if (firstChar === CC_STAR) { + flushStaticBuffer(acc, parts); isDynamic = true; - const wcResult = this.parseWildcard(seg, i, segments.length, path); - if (isErr(wcResult)) { return wcResult; } - parts.push(wcResult); } else { - // Static segment - staticBuf += seg; - - // Add '/' separator after static segment (if not last segment) - if (i < segments.length - 1) { - staticBuf += '/'; - } + appendStaticSegment(acc, seg, !isLast); } } - // Flush remaining static buffer - if (staticBuf.length > 0) { - parts.push({ type: 'static', value: staticBuf }); - } - - // Handle root path '/' with no segments + flushStaticBuffer(acc, parts); if (parts.length === 0) { - parts.push({ type: 'static', value: '/' }); + parts.push({ type: PathPartType.Static, value: '/', segments: [] }); } - return { parts, normalized, isDynamic }; } - private normalizeSegments(path: string): Result<{ segments: string[]; normalized: string }, RouterErrData> { - // Split by '/' (skip leading '/') - const body = path.length > 1 ? path.slice(1) : ''; - let segments = body === '' ? [] : body.split('/'); + private parseParam(seg: string, path: string): Result { + let core = seg; + let isOptional = false; - // Handle trailing slash - if (this.config.ignoreTrailingSlash) { - if (segments.length > 0 && segments[segments.length - 1] === '') { - segments.pop(); - } + const optionalResult = stripOptionalDecorator(core, seg, path); + if ('kind' in optionalResult) { + return err(optionalResult); } + core = optionalResult.core; + isOptional = optionalResult.isOptional; - // Case fold (static segments only — dynamic ones keep original case for param names) - if (!this.config.caseSensitive) { - for (let i = 0; i < segments.length; i++) { - const seg = segments[i]!; - const firstChar = seg.charCodeAt(0); - - // Don't lowercase :param or *wildcard segments - if (firstChar !== 58 && firstChar !== 42) { - segments[i] = seg.toLowerCase(); - } - } + const sugarRejection = rejectColonWildcardSugar(core, seg, path); + if (sugarRejection !== undefined) { + return err(sugarRejection); } - // Validate segment lengths (static segments only) - const maxLen = this.config.maxSegmentLength; - - for (const seg of segments) { - const firstChar = seg.charCodeAt(0); + const nameAndPattern = extractNameAndPattern(core, path); + if ('kind' in nameAndPattern) { + return err(nameAndPattern); + } + const { name, pattern } = nameAndPattern; - if (firstChar !== 58 && firstChar !== 42 && seg.length > maxLen) { - return err({ - kind: 'segment-limit', - message: `Segment length exceeds limit: ${seg.substring(0, 20)}...`, - segment: seg.substring(0, 40), - suggestion: `Shorten the path segment to ${maxLen} characters or fewer.`, - }); - } + const nameValidation = validateParamName(name, ':', path); + if (nameValidation !== null) { + return nameValidation; } - const normalized = segments.length > 0 ? '/' + segments.join('/') : '/'; + const dup = this.registerParam(name, ':', path); + if (dup !== null) { + return dup; + } - return { segments, normalized }; + return { type: PathPartType.Param, name, pattern, optional: isOptional }; } - private parseParam(seg: string, path: string): Result { - let core = seg; - let isOptional = false; + private parseWildcard(seg: string, index: number, totalSegments: number, path: string): Result { + let core = seg.slice(1); + let origin: WildcardOrigin = WildcardOrigin.Star; - // Check trailing decorators - if (core.endsWith('?')) { - isOptional = true; + if (core.endsWith('+')) { + origin = WildcardOrigin.Multi; core = core.slice(0, -1); } - // Multi/zero-or-more → convert to wildcard (only if no '{' pattern) - if (core.endsWith('+') && !core.includes('{')) { - const name = core.slice(1, -1); // skip ':' and '+' + const name = core || '*'; - if (name === '') { - return err({ - kind: 'route-parse', - message: `Empty parameter name in path: ${path}`, - path, - }); - } + if (name !== '*') { + const validation = validateParamName(name, '*', path); - if (this.activeParams.has(name)) { - return err({ - kind: 'param-duplicate', - message: `Duplicate parameter name ':${name}' in path: ${path}`, - path, - segment: name, - }); + if (validation !== null) { + return validation; } - - this.activeParams.add(name); - return { type: 'wildcard', name, origin: 'multi' }; } - if (core.endsWith('*') && !core.includes('{')) { - const name = core.slice(1, -1); // skip ':' and '*' - - if (name === '') { - return err({ - kind: 'route-parse', - message: `Empty parameter name in path: ${path}`, - path, - }); - } - - if (this.activeParams.has(name)) { - return err({ - kind: 'param-duplicate', - message: `Duplicate parameter name ':${name}' in path: ${path}`, - path, - segment: name, - }); - } - - this.activeParams.add(name); - return { type: 'wildcard', name, origin: 'star' }; + if (index !== totalSegments - 1) { + return err({ + kind: RouterErrorKind.RouteParse, + message: `Wildcard '*${name}' must be the last segment: ${path}`, + path, + suggestion: 'Move the wildcard segment to the end of the path.', + }); } - // Extract name and pattern - let name: string; - let pattern: string | null = null; - const braceIdx = core.indexOf('{'); - - if (braceIdx === -1) { - name = core.slice(1); // skip ':' - } else { - name = core.slice(1, braceIdx); + const dup = this.registerParam(name, '*', path); - if (!core.endsWith('}')) { - return err({ - kind: 'route-parse', - message: `Unclosed regex pattern in parameter ':${name}': ${path}`, - path, - }); - } - - pattern = core.slice(braceIdx + 1, -1) || null; + if (dup !== null) { + return dup; } - if (name === '') { - return err({ - kind: 'route-parse', - message: `Empty parameter name in path: ${path}`, - path, - }); - } + return { type: PathPartType.Wildcard, name, origin }; + } - // Check duplicate param names + private registerParam(name: string, prefix: ':' | '*', path: string): Result | null { if (this.activeParams.has(name)) { return err({ - kind: 'param-duplicate', - message: `Duplicate parameter name ':${name}' in path: ${path}`, + kind: RouterErrorKind.ParamDuplicate, + message: `Duplicate parameter name '${prefix}${name}' in path: ${path}`, path, segment: name, + suggestion: `Rename one of the '${prefix}${name}' parameters so each name is unique within the path.`, }); } this.activeParams.add(name); - // Validate regex pattern - if (pattern !== null) { - const safetyResult = this.validatePattern(pattern); - - if (isErr(safetyResult)) { - return safetyResult; - } - } - - return { type: 'param', name, pattern, optional: isOptional }; + return null; } +} - private parseWildcard( - seg: string, - index: number, - totalSegments: number, - path: string, - ): Result { - // Determine origin - let core = seg.slice(1); // skip '*' - let origin: 'star' | 'multi' = 'star'; +function validateParamName(name: string, prefix: ':' | '*', path: string): Result | null { + if (name === '') { + return err({ + kind: RouterErrorKind.RouteParse, + message: `Empty parameter name in path: ${path}`, + path, + suggestion: 'Provide a name after the : or * decorator (e.g. :id, *path).', + }); + } - if (core.endsWith('+')) { - origin = 'multi'; - core = core.slice(0, -1); - } + const firstCode = name.charCodeAt(0); + const isFirstLetter = (firstCode >= 65 && firstCode <= 90) || (firstCode >= 97 && firstCode <= 122); - const name = core || '*'; + if (!isFirstLetter) { + return err({ + kind: RouterErrorKind.RouteParse, + message: `Invalid parameter name '${prefix}${name}' in path: ${path}. Parameter names must start with a letter.`, + path, + segment: name, + suggestion: 'Start the parameter name with an ASCII letter (a-z or A-Z).', + }); + } - // Wildcard must be the last segment - if (index !== totalSegments - 1) { - return err({ - kind: 'route-parse', - message: `Wildcard '*${name}' must be the last segment: ${path}`, - path, - }); - } + for (let i = 1; i < name.length; i++) { + const ch = name.charCodeAt(i); + const isLetter = (ch >= 65 && ch <= 90) || (ch >= 97 && ch <= 122); + const isDigit = ch >= 48 && ch <= 57; + const isUnderscore = ch === 95; - // Check duplicate - if (this.activeParams.has(name)) { + if (!isLetter && !isDigit && !isUnderscore) { return err({ - kind: 'param-duplicate', - message: `Duplicate parameter name '*${name}' in path: ${path}`, + kind: RouterErrorKind.RouteParse, + message: `Invalid character '${name.charAt(i)}' in parameter name '${prefix}${name}'. Only alphanumeric characters and underscores are allowed (snake_case or camelCase).`, path, segment: name, + suggestion: 'Restrict parameter names to ASCII letters, digits, and underscores.', }); } - - this.activeParams.add(name); - - return { type: 'wildcard', name, origin }; } - private validatePattern(pattern: string): Result { - const safety = this.config.regexSafety; + return null; +} - if (!safety) { - return; - } +function rejectColonWildcardSugar(core: string, seg: string, path: string): RouterErrorData | undefined { + const tail = core.charAt(core.length - 1); + if (tail !== '+' && tail !== '*') { + return undefined; + } + if (core.includes('(')) { + return undefined; + } + const canonical = tail === '+' ? `*${core.slice(1, -1)}+` : `*${core.slice(1, -1)}`; + return { + kind: RouterErrorKind.RouteParse, + message: `Colon-form wildcard '${seg}' is not supported. Use '${canonical}' instead.`, + path, + segment: seg, + suggestion: `Wildcards must use the '*name' (zero-or-more) or '*name+' (one-or-more) syntax — not the ':name${tail}' colon form.`, + }; +} - // Normalize pattern (strip anchors) - const normResult = this.patternUtils.normalizeParamPatternSource(pattern); +function stripOptionalDecorator( + core: string, + seg: string, + path: string, +): { core: string; isOptional: boolean } | RouterErrorData { + if (!core.endsWith('?')) { + return { core, isOptional: false }; + } + const before = core.charCodeAt(core.length - 2); + if (before === CC_PLUS || before === CC_STAR) { + return { + kind: RouterErrorKind.RouteParse, + message: `Invalid decorator combination in parameter '${seg}': ${path}`, + path, + segment: seg, + suggestion: 'Use either an optional param (:name?) or a wildcard segment (*name / *name+), not both.', + }; + } + return { core: core.slice(0, -1), isOptional: true }; +} - if (isErr(normResult)) { - return normResult; - } +function extractNameAndPattern(core: string, path: string): { name: string; pattern: string | null } | RouterErrorData { + const parenIdx = core.indexOf('('); + if (parenIdx === -1) { + return { name: core.slice(1), pattern: null }; + } + const name = core.slice(1, parenIdx); + if (!core.endsWith(')')) { + return { + kind: RouterErrorKind.RouteParse, + message: `Unclosed regex pattern in parameter ':${name}': ${path}`, + path, + suggestion: 'Close the regex group with a matching ).', + }; + } + const rawPattern = core.slice(parenIdx + 1, -1); + if (rawPattern.trim() === '') { + return { + kind: RouterErrorKind.RouteParse, + message: `Empty regex pattern in parameter ':${name}': ${path}`, + path, + segment: name, + suggestion: `Either remove the parentheses entirely (':${name}') or provide a non-empty pattern.`, + }; + } + const normalizeResult = normalizeParamPatternSource(rawPattern); + if (typeof normalizeResult !== 'string') { + return { + kind: RouterErrorKind.RouteParse, + message: `Anchored regex pattern in parameter ':${name}': ${path}`, + path, + segment: name, + suggestion: normalizeResult.suggestion, + }; + } + return { name, pattern: normalizeResult }; +} - // Safety assessment - const assessment = assessRegexSafety(normResult, { - maxLength: safety.maxLength ?? 256, - forbidBacktrackingTokens: safety.forbidBacktrackingTokens ?? true, - forbidBackreferences: safety.forbidBackreferences ?? true, - }); +interface StaticAccumulator { + buf: string; + segments: string[]; +} - if (!assessment.safe) { - const mode = safety.mode ?? 'error'; +function flushStaticBuffer(acc: StaticAccumulator, parts: PathPart[]): void { + if (acc.buf.length === 0) { + return; + } + parts.push({ type: PathPartType.Static, value: acc.buf, segments: acc.segments }); + acc.buf = ''; + acc.segments = []; +} - if (mode === 'error') { - return err({ - kind: 'regex-unsafe', - message: `Unsafe regex pattern: ${assessment.reason}`, - segment: pattern, - }); - } +function appendStaticSegment(acc: StaticAccumulator, seg: string, hasNext: boolean): void { + acc.buf += seg; + acc.segments.push(seg); + if (hasNext) { + acc.buf += '/'; + } +} - if (mode === 'warn' && this.config.onWarn) { - this.config.onWarn({ - kind: 'regex-unsafe', - message: `Unsafe regex pattern: ${assessment.reason}`, - segment: pattern, - }); - } +function normalizeIriSegment(seg: string): string { + const nfc = seg.normalize('NFC'); + let out = ''; + const encoder = NFC_ENCODER; + for (const ch of nfc) { + const code = ch.codePointAt(0)!; + if (code < 0x80) { + out += ch; + continue; } - - // Custom validator — exception propagates to caller - if (safety.validator) { - safety.validator(pattern); + const bytes = encoder.encode(ch); + for (let i = 0; i < bytes.length; i++) { + const b = bytes[i]!; + out += '%'; + out += HEX_UPPER[b >>> 4]; + out += HEX_UPPER[b & 0x0f]; } } + return out; } + +const NFC_ENCODER = new TextEncoder(); +const HEX_UPPER = '0123456789ABCDEF'; + +export { PathParser }; +export type { PathParserConfig }; diff --git a/packages/router/src/builder/path-policy.spec.ts b/packages/router/src/builder/path-policy.spec.ts new file mode 100644 index 0000000..bdc733c --- /dev/null +++ b/packages/router/src/builder/path-policy.spec.ts @@ -0,0 +1,176 @@ +import { describe, test, expect } from 'bun:test'; + +import { firstBuildIssue } from '../../test/test-utils'; +import { Router } from '../router'; +import { RouterErrorKind } from '../types'; + +describe('registration path policy accepts well-formed routes', () => { + test.each([ + ['/'], + ['/users'], + ['/users/:id'], + ['/users/:id?'], + ['/users/:id?/posts'], + ['/files/*p'], + ['/api/v1/_underscore/dot.token-and-tilde~'], + ['/colon:literal'], + ['/at@symbol'], + ["/sub:!$&'()*+,;="], + ['/literal%23'], + ['/literal%3F'], + ['/users/:id(\\d+)'], + ])('accepts %s', path => { + const r = new Router(); + r.add('GET', path, 'h'); + r.build(); + expect(r.match('GET', path.replace(/:[a-z]+\??/g, 'val').replace(/\*[a-z]+/g, 'tail'))).not.toBeUndefined(); + }); +}); + +describe('registration path policy rejects ill-formed routes', () => { + const cases: Array<[string, string, RouterErrorKind]> = [ + ['raw query', '/a?b', RouterErrorKind.PathQuery], + ['raw query at a non-param segment end', '/a?', RouterErrorKind.PathQuery], + ['raw fragment', '/a#b', RouterErrorKind.PathFragment], + ['C0 control char', '/a\x01b', RouterErrorKind.PathControlChar], + ['literal `..` segment', '/a/../b', RouterErrorKind.PathDotSegment], + ['literal `.` segment', '/a/./b', RouterErrorKind.PathDotSegment], + ['encoded `..` segment', '/a/%2e%2e/b', RouterErrorKind.PathDotSegment], + ['malformed percent escape', '/a/%ZZ', RouterErrorKind.PathMalformedPercent], + ]; + + test.each(cases)('rejects %s with %s issue kind', (_label, path, expectedKind) => { + const r = new Router(); + r.add('GET', path, 'h'); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(expectedKind); + }); +}); + +describe('IRI registration (RFC 3987) — raw Unicode is normalized to URI form', () => { + test('accepts a raw Unicode static segment and normalizes it to percent-encoded UTF-8', () => { + const r = new Router(); + r.add('GET', '/users/한국', 'h'); + r.build(); + expect(r.match('GET', '/users/%ED%95%9C%EA%B5%AD')?.value).toBe('h'); + }); + + test('IRI and URI form of the same path are duplicates at registration time', () => { + const r = new Router(); + r.add('GET', '/users/한국', 'a'); + r.add('GET', '/users/%ED%95%9C%EA%B5%AD', 'b'); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(RouterErrorKind.RouteDuplicate); + }); + + test('NFC normalization collapses decomposed and composed forms to one route', () => { + const decomposed = '/users/A\u030A'; + const composed = '/users/\u00C5'; + const r = new Router(); + r.add('GET', decomposed, 'a'); + r.add('GET', composed, 'b'); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(RouterErrorKind.RouteDuplicate); + }); + + test('mixed IRI + ASCII segments are normalized correctly', () => { + const r = new Router(); + r.add('GET', '/api/v1/사용자/list', 'h'); + r.build(); + expect(r.match('GET', '/api/v1/%EC%82%AC%EC%9A%A9%EC%9E%90/list')?.value).toBe('h'); + }); + + test('4-byte UTF-8 codepoints (e.g. emoji) encode as 4 percent groups', () => { + const r = new Router(); + r.add('GET', '/p/😀', 'h'); + r.build(); + expect(r.match('GET', '/p/%F0%9F%98%80')?.value).toBe('h'); + }); + + test('pure-ASCII path is unchanged (fast path)', () => { + const r = new Router(); + r.add('GET', '/users/42', 'h'); + r.build(); + expect(r.match('GET', '/users/42')?.value).toBe('h'); + }); +}); + +describe('percent-decode UTF-8 validation (validateDecodedBytes)', () => { + const utf8Cases: Array<[string, string, RouterErrorKind]> = [ + ['encoded slash %2F', '/a/%2F', RouterErrorKind.PathEncodedSlash], + ['stray continuation byte 0x80', '/a/%80', RouterErrorKind.PathInvalidUtf8], + ['overlong 2-byte lead 0xC0', '/a/%C0%80', RouterErrorKind.PathInvalidUtf8], + ['overlong 2-byte lead 0xC1', '/a/%C1%80', RouterErrorKind.PathInvalidUtf8], + ['invalid 4-byte lead 0xF5', '/a/%F5%80%80%80', RouterErrorKind.PathInvalidUtf8], + ['invalid lead byte 0xFF', '/a/%FF', RouterErrorKind.PathInvalidUtf8], + ['truncated UTF-8 sequence', '/a/%E4b', RouterErrorKind.PathInvalidUtf8], + ['continuation without lead', '/a/%C2/x', RouterErrorKind.PathInvalidUtf8], + ['UTF-16 surrogate codepoint', '/a/%ED%A0%80', RouterErrorKind.PathInvalidUtf8], + ['codepoint above U+10FFFF', '/a/%F4%90%80%80', RouterErrorKind.PathInvalidUtf8], + ['overlong 3-byte sequence', '/a/%E0%80%80', RouterErrorKind.PathInvalidUtf8], + ['overlong 4-byte sequence', '/a/%F0%80%80%80', RouterErrorKind.PathInvalidUtf8], + ['trailing incomplete UTF-8', '/a/%C2', RouterErrorKind.PathInvalidUtf8], + ]; + + test.each(utf8Cases)('rejects %s with %s issue kind', (_label, path, expectedKind) => { + const r = new Router(); + r.add('GET', path, 'h'); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(expectedKind); + }); + + test('accepts a valid multi-byte UTF-8 codepoint encoded in the path (e.g. 一 → %E4%B8%80)', () => { + const r = new Router(); + r.add('GET', '/a/%E4%B8%80', 'h'); + expect(() => r.build()).not.toThrow(); + }); + + test('accepts a valid 4-byte UTF-8 codepoint (e.g. 😀 → %F0%9F%98%80)', () => { + const r = new Router(); + r.add('GET', '/a/%F0%9F%98%80', 'h'); + expect(() => r.build()).not.toThrow(); + }); + + // Boundary codepoints: the minimum scalar of each UTF-8 length (overlong lower edge) + // and the maximum valid scalar U+10FFFF must be ACCEPTED, not rejected. + const validBoundaries: Array<[string, string]> = [ + ['U+0080 — minimum 2-byte scalar', '/a/%C2%80'], + ['U+0800 — minimum 3-byte scalar', '/a/%E0%A0%80'], + ['U+10000 — minimum 4-byte scalar', '/a/%F0%90%80%80'], + ['U+10FFFF — maximum valid scalar', '/a/%F4%8F%BF%BF'], + ]; + + test.each(validBoundaries)('accepts boundary codepoint %s', (_label, path) => { + const r = new Router(); + r.add('GET', path, 'h'); + expect(() => r.build()).not.toThrow(); + }); + + test('skips validation inside a regex paren group — `(?:%FF)` is allowed as raw regex source', () => { + const r = new Router(); + r.add('GET', '/users/:id(a%20b)', 'h'); + expect(() => r.build()).not.toThrow(); + }); + + test('rejects a dot segment inside a path that follows a regex paren group', () => { + const r = new Router(); + r.add('GET', '/users/:id(\\d+)/..', 'h'); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(RouterErrorKind.PathDotSegment); + }); + + test('rejects a dot segment inside a balanced regex group that crosses a slash (line 80-85 branch)', () => { + const r = new Router(); + r.add('GET', '/foo(/../bar)', 'h'); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(RouterErrorKind.PathDotSegment); + }); +}); + +describe('lowercase hex digit parsing (hexValue a-f branch)', () => { + test('decodes lowercase hex digits in percent-escapes', () => { + const r = new Router(); + r.add('GET', '/a/%e4%b8%80', 'h'); + expect(() => r.build()).not.toThrow(); + }); +}); diff --git a/packages/router/src/builder/path-policy.ts b/packages/router/src/builder/path-policy.ts new file mode 100644 index 0000000..75f8d7e --- /dev/null +++ b/packages/router/src/builder/path-policy.ts @@ -0,0 +1,330 @@ +import type { Result } from '@zipbul/result'; + +import { err } from '@zipbul/result'; + +import type { RouterErrorData } from '../types'; + +import { RouterErrorKind } from '../types'; +import { CC_SLASH } from './constants'; + +function validatePathChars(path: string): Result { + if (path.length === 0 || path.charCodeAt(0) !== CC_SLASH) { + return err({ + kind: RouterErrorKind.PathMissingLeadingSlash, + message: `Path must start with '/': ${path}`, + path, + suggestion: 'Prefix the route pattern with `/` (e.g. `users` → `/users`).', + }); + } + + let segStart = 1; + let parenDepth = 0; + const len = path.length; + for (let i = 0; i < len; i++) { + const c = path.charCodeAt(i); + + if (c === 0x28) { + parenDepth++; + } else if (c === 0x29 && parenDepth > 0) { + parenDepth--; + } + + if ((c >= 0x00 && c <= 0x1f) || c === 0x7f) { + return err({ + kind: RouterErrorKind.PathControlChar, + message: `Path must not contain control characters (charCode 0x${c.toString(16).padStart(2, '0')}): ${path}`, + path, + suggestion: 'Remove control characters from the route pattern.', + }); + } + + if (c >= 0x80) { + continue; + } + + if (c === 0x25) { + if (i + 2 >= len || !isHex(path.charCodeAt(i + 1)) || !isHex(path.charCodeAt(i + 2))) { + return err({ + kind: RouterErrorKind.PathMalformedPercent, + message: `Path contains malformed percent-escape: ${path}`, + path, + suggestion: 'Every `%` must be followed by exactly two hex digits (0-9, A-F, a-f).', + }); + } + } + + if (parenDepth > 0) { + if (c === CC_SLASH || i === len - 1) { + const segEnd = c === CC_SLASH ? i : i + 1; + if (segEnd > segStart && isDotSegment(path, segStart, segEnd)) { + return err({ + kind: RouterErrorKind.PathDotSegment, + message: `Path must not contain dot segments '.' or '..' (literal or percent-encoded): ${path}`, + path, + suggestion: 'Remove dot segments. Encoded forms `%2e`, `%2E`, `%2e%2e` are also rejected.', + }); + } + segStart = i + 1; + } + continue; + } + + if (c === 0x23) { + return err({ + kind: RouterErrorKind.PathFragment, + message: `Path must not contain raw fragment '#': ${path}`, + path, + suggestion: 'Use percent-encoded form `%23` for literal `#`.', + }); + } + + if (c === 0x3f) { + const segmentIsParam = path.charCodeAt(segStart) === 0x3a; + const next = i + 1 < len ? path.charCodeAt(i + 1) : 0; + const isSegEnd = next === 0 || next === CC_SLASH; + if (!segmentIsParam || !isSegEnd) { + return err({ + kind: RouterErrorKind.PathQuery, + message: `Path must not contain raw query '?' (use \`:name?\` decorator only): ${path}`, + path, + suggestion: 'Optional param decorator `?` must follow a param name and end the segment.', + }); + } + } + + if (c === CC_SLASH || i === len - 1) { + const segEnd = c === CC_SLASH ? i : i + 1; + if (segEnd > segStart) { + if (isDotSegment(path, segStart, segEnd)) { + return err({ + kind: RouterErrorKind.PathDotSegment, + message: `Path must not contain dot segments '.' or '..' (literal or percent-encoded): ${path}`, + path, + suggestion: 'Remove dot segments. Encoded forms `%2e`, `%2E`, `%2e%2e` are also rejected.', + }); + } + } + segStart = i + 1; + } + + if (!isAcceptablePathChar(c)) { + return err({ + kind: RouterErrorKind.PathInvalidPchar, + message: `Path contains invalid character '${path[i]}' (charCode 0x${c.toString(16)}): ${path}`, + path, + segment: path[i]!, + suggestion: 'Use the percent-encoded form for characters outside the path-segment grammar (RFC 3986 §3.3 pchar).', + }); + } + } + + return validateDecodedBytes(path); +} + +function isHex(c: number): boolean { + return (c >= 0x30 && c <= 0x39) || (c >= 0x41 && c <= 0x46) || (c >= 0x61 && c <= 0x66); +} + +type DecodeFailKind = RouterErrorKind.PathEncodedSlash | RouterErrorKind.PathInvalidUtf8; + +function failDecode(kind: DecodeFailKind, msg: string, suggestion: string, path: string): Result { + return err({ kind, message: `${msg}: ${path}`, path, suggestion }); +} + +function hexValue(c: number): number { + if (c >= 0x30 && c <= 0x39) { + return c - 0x30; + } + if (c >= 0x41 && c <= 0x46) { + return c - 0x41 + 10; + } + return c - 0x61 + 10; +} + +function validateDecodedBytes(path: string): Result { + const len = path.length; + let parenDepth = 0; + let i = 0; + let expect = 0; + let seqVal = 0; + let seqMin = 0; + + while (i < len) { + const ch = path.charCodeAt(i); + if (ch === 0x28) { + parenDepth++; + i++; + continue; + } + if (ch === 0x29 && parenDepth > 0) { + parenDepth--; + i++; + continue; + } + if (parenDepth > 0) { + i++; + continue; + } + + if (ch !== 0x25) { + if (expect !== 0) { + return failDecode( + RouterErrorKind.PathInvalidUtf8, + 'Path percent-encoding decodes to a truncated UTF-8 sequence', + 'Each `%xx` continuation byte must complete the surrounding UTF-8 codepoint.', + path, + ); + } + i++; + continue; + } + + const b = (hexValue(path.charCodeAt(i + 1)) << 4) | hexValue(path.charCodeAt(i + 2)); + i += 3; + + if (expect === 0) { + if (b === 0x2f) { + return failDecode( + RouterErrorKind.PathEncodedSlash, + 'Path contains percent-encoded `/` (%2F)', + 'Encoded slashes are not allowed; the path grammar reserves `/` as the segment separator.', + path, + ); + } + if (b < 0x80) { + continue; + } + + if (b < 0xc2) { + return failDecode( + RouterErrorKind.PathInvalidUtf8, + `Path percent-encoding produced invalid UTF-8 lead byte %${b.toString(16).toUpperCase()}`, + 'Lead bytes 0x80-0xbf and 0xc0-0xc1 are not valid in well-formed UTF-8.', + path, + ); + } + if (b < 0xe0) { + expect = 1; + seqVal = b & 0x1f; + seqMin = 0x80; + } else if (b < 0xf0) { + expect = 2; + seqVal = b & 0x0f; + seqMin = 0x800; + } else if (b < 0xf5) { + expect = 3; + seqVal = b & 0x07; + seqMin = 0x10000; + } else { + return failDecode( + RouterErrorKind.PathInvalidUtf8, + `Path percent-encoding produced invalid UTF-8 lead byte %${b.toString(16).toUpperCase()}`, + 'Lead bytes 0xf5-0xff are outside the Unicode range.', + path, + ); + } + continue; + } + + if ((b & 0xc0) !== 0x80) { + return failDecode( + RouterErrorKind.PathInvalidUtf8, + `Path percent-encoding produced invalid UTF-8 continuation byte %${b.toString(16).toUpperCase()}`, + 'Continuation bytes must match `0b10xxxxxx`.', + path, + ); + } + seqVal = (seqVal << 6) | (b & 0x3f); + expect--; + if (expect === 0) { + if (seqVal < seqMin) { + return failDecode( + RouterErrorKind.PathInvalidUtf8, + `Path percent-encoding produced an overlong UTF-8 sequence (codepoint U+${seqVal.toString(16).toUpperCase()})`, + 'Overlong encodings are forbidden by RFC 3629 §3.', + path, + ); + } + if (seqVal >= 0xd800 && seqVal <= 0xdfff) { + return failDecode( + RouterErrorKind.PathInvalidUtf8, + `Path percent-encoding produced a surrogate codepoint U+${seqVal.toString(16).toUpperCase()}`, + 'UTF-16 surrogate halves are not valid Unicode scalars.', + path, + ); + } + if (seqVal > 0x10ffff) { + return failDecode( + RouterErrorKind.PathInvalidUtf8, + `Path percent-encoding produced a codepoint above U+10FFFF`, + 'The Unicode range tops out at U+10FFFF.', + path, + ); + } + } + } + + if (expect !== 0) { + return failDecode( + RouterErrorKind.PathInvalidUtf8, + 'Path ends with an incomplete UTF-8 sequence', + 'Provide all continuation bytes for the trailing UTF-8 codepoint.', + path, + ); + } + return undefined; +} + +function isDotSegment(path: string, segStart: number, segEnd: number): boolean { + let dotCount = 0; + let nonDot = false; + let i = segStart; + while (i < segEnd) { + const c = path.charCodeAt(i); + if (c === 0x2e) { + dotCount++; + i++; + continue; + } + if (c === 0x25 && i + 2 < segEnd) { + const h1 = path.charCodeAt(i + 1); + const h2 = path.charCodeAt(i + 2); + if (h1 === 0x32 && (h2 === 0x65 || h2 === 0x45)) { + dotCount++; + i += 3; + continue; + } + } + nonDot = true; + break; + } + if (nonDot) { + return false; + } + return dotCount === 1 || dotCount === 2; +} + +const ACCEPTABLE_PCHAR_TABLE = (() => { + const t = new Uint8Array(128); + for (let c = 0x41; c <= 0x5a; c++) { + t[c] = 1; + } + for (let c = 0x61; c <= 0x7a; c++) { + t[c] = 1; + } + for (let c = 0x30; c <= 0x39; c++) { + t[c] = 1; + } + for (const c of [ + 0x2d, 0x2e, 0x5f, 0x7e, 0x21, 0x24, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x3b, 0x3d, 0x3a, 0x40, 0x2f, 0x3f, 0x25, + ]) { + t[c] = 1; + } + return t; +})(); + +function isAcceptablePathChar(c: number): boolean { + return c < 128 && ACCEPTABLE_PCHAR_TABLE[c] === 1; +} + +export { validatePathChars }; diff --git a/packages/router/src/builder/pattern-utils.spec.ts b/packages/router/src/builder/pattern-utils.spec.ts index 66c6297..2eabbf1 100644 --- a/packages/router/src/builder/pattern-utils.spec.ts +++ b/packages/router/src/builder/pattern-utils.spec.ts @@ -1,95 +1,37 @@ import { describe, it, expect } from 'bun:test'; -import { isErr } from '@zipbul/result'; -import { PatternUtils } from './pattern-utils'; +import { expectObject } from '../../test/test-utils'; +import { normalizeParamPatternSource } from './pattern-utils'; -describe('PatternUtils', () => { - describe('acquireCompiledPattern', () => { - it('should return a RegExp that matches the given source and flags', () => { - const utils = new PatternUtils({}); - const regex = utils.acquireCompiledPattern('\\d+', ''); - - expect(regex.test('123')).toBe(true); - expect(regex.test('abc')).toBe(false); - }); - - it('should return the same RegExp instance for identical source and flags (cache hit)', () => { - const utils = new PatternUtils({}); - const r1 = utils.acquireCompiledPattern('\\d+', ''); - const r2 = utils.acquireCompiledPattern('\\d+', ''); - - expect(r1).toBe(r2); - }); - - it('should return different RegExp instances for different sources', () => { - const utils = new PatternUtils({}); - const r1 = utils.acquireCompiledPattern('\\d+', ''); - const r2 = utils.acquireCompiledPattern('[a-z]+', ''); - - expect(r1).not.toBe(r2); - }); - - it('should differentiate cache keys by flags', () => { - const utils = new PatternUtils({}); - const r1 = utils.acquireCompiledPattern('abc', ''); - const r2 = utils.acquireCompiledPattern('abc', 'i'); - - expect(r1).not.toBe(r2); - }); +describe('normalizeParamPatternSource', () => { + it('returns clean pattern unchanged when no anchors are present', () => { + expect(normalizeParamPatternSource('\\d+')).toBe('\\d+'); }); - describe('normalizeParamPatternSource', () => { - it('should return clean pattern unchanged when no anchors are present (policy=silent)', () => { - const utils = new PatternUtils({ regexAnchorPolicy: 'silent' }); - const result = utils.normalizeParamPatternSource('\\d+'); - - expect(isErr(result)).toBe(false); - expect(result).toBe('\\d+'); - }); - - it('should strip leading ^ anchor from pattern (policy=silent)', () => { - const utils = new PatternUtils({ regexAnchorPolicy: 'silent' }); - const result = utils.normalizeParamPatternSource('^\\d+'); - - expect(isErr(result)).toBe(false); - expect(result).toBe('\\d+'); - }); - - it('should strip trailing $ anchor from pattern (policy=silent)', () => { - const utils = new PatternUtils({ regexAnchorPolicy: 'silent' }); - const result = utils.normalizeParamPatternSource('\\d+$'); - - expect(isErr(result)).toBe(false); - expect(result).toBe('\\d+'); - }); - - it('should return Err(regex-anchor) when pattern has anchor and policy is error', () => { - const utils = new PatternUtils({ regexAnchorPolicy: 'error' }); - const result = utils.normalizeParamPatternSource('^\\d+$'); - - expect(isErr(result)).toBe(true); - expect((result as any).data.kind).toBe('regex-anchor'); - }); + it('rejects leading ^ anchor', () => { + const result = normalizeParamPatternSource('^\\d+'); + expect(typeof result).toBe('object'); + expect(expectObject(result).reason).toBe('anchor'); + }); - it('should call onWarn and return stripped pattern when policy is warn', () => { - const warnings: string[] = []; - const utils = new PatternUtils({ - regexAnchorPolicy: 'warn', - onWarn: w => warnings.push(w.kind), - }); - const result = utils.normalizeParamPatternSource('^\\d+'); + it('rejects trailing $ anchor', () => { + const result = normalizeParamPatternSource('\\d+$'); + expect(typeof result).toBe('object'); + expect(expectObject(result).reason).toBe('anchor'); + }); - expect(isErr(result)).toBe(false); - expect(result).toBe('\\d+'); - expect(warnings).toContain('regex-anchor'); - }); + it('rejects both anchors', () => { + const result = normalizeParamPatternSource('^\\d+$'); + expect(typeof result).toBe('object'); + expect(expectObject(result).reason).toBe('anchor'); + }); - it('should normalize pattern with only anchors to .* ', () => { - const utils = new PatternUtils({ regexAnchorPolicy: 'silent' }); - const result = utils.normalizeParamPatternSource('^$'); + it('rejects pattern with only anchors', () => { + const result = normalizeParamPatternSource('^$'); + expect(typeof result).toBe('object'); + }); - expect(isErr(result)).toBe(false); - expect(result).toBe('.*'); - }); + it('trims surrounding whitespace from acceptable patterns', () => { + expect(normalizeParamPatternSource(' \\d+ ')).toBe('\\d+'); }); }); diff --git a/packages/router/src/builder/pattern-utils.ts b/packages/router/src/builder/pattern-utils.ts index 556b4c4..ab441bf 100644 --- a/packages/router/src/builder/pattern-utils.ts +++ b/packages/router/src/builder/pattern-utils.ts @@ -1,75 +1,17 @@ -import type { Result } from '@zipbul/result'; -import type { RouterErrData } from '../types'; -import type { BuilderConfig } from './types'; +import { END_ANCHOR_PATTERN, START_ANCHOR_PATTERN } from './constants'; -import { err } from '@zipbul/result'; -import { START_ANCHOR_PATTERN, END_ANCHOR_PATTERN } from './constants'; - -export class PatternUtils { - private readonly compiledPatternCache = new Map(); - private readonly config: BuilderConfig; - - constructor(config: BuilderConfig) { - this.config = config; - } - - acquireCompiledPattern(source: string, flags: string): RegExp { - const key = `${flags}|${source}`; - const cached = this.compiledPatternCache.get(key); - - if (cached) { - return cached; - } - - const compiled = new RegExp(`^(?:${source})$`, flags); - - this.compiledPatternCache.set(key, compiled); - - return compiled; - } - - normalizeParamPatternSource(patternSrc: string): Result { - let normalized = patternSrc.trim(); - - if (!normalized) { - return normalized; - } - - let removed = false; - - if (START_ANCHOR_PATTERN.test(normalized)) { - removed = true; - normalized = normalized.replace(START_ANCHOR_PATTERN, ''); - } - - if (END_ANCHOR_PATTERN.test(normalized)) { - removed = true; - normalized = normalized.replace(END_ANCHOR_PATTERN, ''); - } - - if (!normalized) { - normalized = '.*'; - removed = true; - } - - if (removed) { - const policy = this.config.regexAnchorPolicy; - const msg = `[Router] Parameter regex '${patternSrc}' contained anchors which were stripped.`; - - if (policy === 'error') { - return err({ - kind: 'regex-anchor', - message: msg, - segment: patternSrc, - suggestion: `Remove anchor characters ('^', '$') from parameter regex — the router wraps patterns automatically`, - }); - } - - if (policy === 'warn') { - this.config.onWarn?.({ kind: 'regex-anchor', message: msg, segment: patternSrc }); - } - } +export interface PatternRejection { + reason: 'anchor'; + suggestion: string; +} - return normalized; +export function normalizeParamPatternSource(patternSrc: string): string | PatternRejection { + const trimmed = patternSrc.trim(); + if (START_ANCHOR_PATTERN.test(trimmed) || END_ANCHOR_PATTERN.test(trimmed)) { + return { + reason: 'anchor', + suggestion: 'Remove the leading `^` or trailing `$` — the router wraps every param regex in `^(?:...)$` automatically.', + }; } + return trimmed; } diff --git a/packages/router/src/builder/radix-builder.spec.ts b/packages/router/src/builder/radix-builder.spec.ts deleted file mode 100644 index 72b9c73..0000000 --- a/packages/router/src/builder/radix-builder.spec.ts +++ /dev/null @@ -1,218 +0,0 @@ -import { describe, it, expect } from 'bun:test'; -import { isErr } from '@zipbul/result'; - -import { RadixBuilder } from './radix-builder'; -import type { BuilderConfig } from './types'; -import type { PathPart } from './path-parser'; - -function defaultConfig(overrides: Partial = {}): BuilderConfig { - return { - regexSafety: { mode: 'error', maxLength: 256, forbidBacktrackingTokens: true, forbidBackreferences: true }, - ...overrides, - }; -} - -function staticPart(value: string): PathPart { - return { type: 'static', value }; -} - -function paramPart(name: string, pattern: string | null = null, optional = false): PathPart { - return { type: 'param', name, pattern, optional }; -} - -function wildcardPart(name: string, origin: 'star' | 'multi' = 'star'): PathPart { - return { type: 'wildcard', name, origin }; -} - -describe('RadixBuilder', () => { - describe('getRoot', () => { - it('should return null for method with no routes', () => { - const builder = new RadixBuilder(defaultConfig()); - expect(builder.getRoot(0)).toBeNull(); - }); - - it('should return root node after insertion', () => { - const builder = new RadixBuilder(defaultConfig()); - builder.insert(0, [staticPart('/users')], 0); - expect(builder.getRoot(0)).not.toBeNull(); - }); - }); - - describe('static insertion', () => { - it('should insert a single static route', () => { - const builder = new RadixBuilder(defaultConfig()); - const result = builder.insert(0, [staticPart('/users')], 0); - - expect(isErr(result)).toBe(false); - - const root = builder.getRoot(0)!; - expect(root).not.toBeNull(); - }); - - it('should split nodes on LCP divergence', () => { - const builder = new RadixBuilder(defaultConfig()); - builder.insert(0, [staticPart('/users')], 0); - builder.insert(0, [staticPart('/utils')], 1); - - const root = builder.getRoot(0)!; - // Root should have inert child at '/' charCode - expect(root.inert).not.toBeNull(); - - const slashChild = root.inert![47]; // '/' - expect(slashChild).toBeDefined(); - // Should have been split at common prefix '/u' - expect(slashChild!.part).toBe('/u'); - }); - - it('should handle shared prefix routes', () => { - const builder = new RadixBuilder(defaultConfig()); - builder.insert(0, [staticPart('/api/users')], 0); - builder.insert(0, [staticPart('/api/posts')], 1); - - const root = builder.getRoot(0)!; - const slashChild = root.inert![47]!; - // /api/ is the common prefix - expect(slashChild.part).toBe('/api/'); - }); - }); - - describe('param insertion', () => { - it('should insert a param route', () => { - const builder = new RadixBuilder(defaultConfig()); - const result = builder.insert(0, [staticPart('/users/'), paramPart('id')], 0); - - expect(isErr(result)).toBe(false); - }); - - it('should detect param conflict (same name, different pattern)', () => { - const builder = new RadixBuilder(defaultConfig()); - builder.insert(0, [staticPart('/users/'), paramPart('id', '\\d+')], 0); - const result = builder.insert(0, [staticPart('/users/'), paramPart('id', '[a-z]+')], 1); - - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('route-conflict'); - }); - }); - - describe('wildcard insertion', () => { - it('should insert a wildcard route', () => { - const builder = new RadixBuilder(defaultConfig()); - const result = builder.insert(0, [staticPart('/files/'), wildcardPart('path')], 0); - - expect(isErr(result)).toBe(false); - }); - - it('should detect wildcard conflict with different name', () => { - const builder = new RadixBuilder(defaultConfig()); - builder.insert(0, [staticPart('/files/'), wildcardPart('path')], 0); - const result = builder.insert(0, [staticPart('/files/'), wildcardPart('file')], 1); - - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('route-conflict'); - }); - - it('should detect wildcard duplicate with same name', () => { - const builder = new RadixBuilder(defaultConfig()); - builder.insert(0, [staticPart('/files/'), wildcardPart('path')], 0); - const result = builder.insert(0, [staticPart('/files/'), wildcardPart('path')], 1); - - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('route-duplicate'); - }); - - it('should detect wildcard-param conflict', () => { - const builder = new RadixBuilder(defaultConfig()); - builder.insert(0, [staticPart('/files/'), wildcardPart('path')], 0); - const result = builder.insert(0, [staticPart('/files/'), paramPart('id')], 1); - - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('route-conflict'); - }); - - it('should detect param-wildcard conflict', () => { - const builder = new RadixBuilder(defaultConfig()); - builder.insert(0, [staticPart('/files/'), paramPart('id')], 0); - const result = builder.insert(0, [staticPart('/files/'), wildcardPart('path')], 1); - - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('route-conflict'); - }); - }); - - describe('duplicate detection', () => { - it('should detect duplicate static routes', () => { - const builder = new RadixBuilder(defaultConfig()); - builder.insert(0, [staticPart('/users')], 0); - const result = builder.insert(0, [staticPart('/users')], 1); - - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('route-duplicate'); - }); - - it('should detect duplicate param routes', () => { - const builder = new RadixBuilder(defaultConfig()); - builder.insert(0, [staticPart('/users/'), paramPart('id')], 0); - const result = builder.insert(0, [staticPart('/users/'), paramPart('id')], 1); - - expect(isErr(result)).toBe(true); - if (isErr(result)) expect(result.data.kind).toBe('route-duplicate'); - }); - }); - - describe('per-method trie', () => { - it('should maintain independent trees per method', () => { - const builder = new RadixBuilder(defaultConfig()); - builder.insert(0, [staticPart('/users')], 0); - builder.insert(1, [staticPart('/posts')], 1); - - expect(builder.getRoot(0)).not.toBeNull(); - expect(builder.getRoot(1)).not.toBeNull(); - - // Trees are independent - const root0 = builder.getRoot(0)!; - const root1 = builder.getRoot(1)!; - expect(root0.inert![47]!.part).toBe('/users'); - expect(root1.inert![47]!.part).toBe('/posts'); - }); - }); - - describe('optional params', () => { - it('should expand optional param into two insertion paths', () => { - const builder = new RadixBuilder(defaultConfig()); - const result = builder.insert(0, [ - staticPart('/users/'), - paramPart('id', null, true), - ], 0); - - expect(isErr(result)).toBe(false); - // Both /users/:id and /users should be in the trie - const root = builder.getRoot(0)!; - expect(root).not.toBeNull(); - }); - - it('should record optional param defaults', () => { - const builder = new RadixBuilder(defaultConfig()); - builder.insert(0, [ - staticPart('/users/'), - paramPart('id', null, true), - ], 0); - - expect(builder.optionalParamDefaults).toBeDefined(); - }); - }); - - describe('getTesters', () => { - it('should return empty array for method with no testers', () => { - const builder = new RadixBuilder(defaultConfig()); - expect(builder.getTesters(0)).toEqual([]); - }); - - it('should return tester for regex param', () => { - const builder = new RadixBuilder(defaultConfig()); - builder.insert(0, [staticPart('/users/'), paramPart('id', '\\d+')], 0); - - const testers = builder.getTesters(0); - expect(testers.length).toBeGreaterThan(0); - }); - }); -}); diff --git a/packages/router/src/builder/radix-builder.ts b/packages/router/src/builder/radix-builder.ts deleted file mode 100644 index f9decfd..0000000 --- a/packages/router/src/builder/radix-builder.ts +++ /dev/null @@ -1,418 +0,0 @@ -import type { Result } from '@zipbul/result'; -import type { PatternTesterFn, RouterErrData } from '../types'; -import type { PathPart } from './path-parser'; - -import { err, isErr } from '@zipbul/result'; -import { createRadixNode, createParamNode } from './radix-node'; -import type { RadixNode, ParamNode } from './radix-node'; -import { OptionalParamDefaults } from './optional-param-defaults'; -import { PatternUtils } from './pattern-utils'; -import { buildPatternTester } from '../matcher/pattern-tester'; -import type { BuilderConfig } from './types'; - -export class RadixBuilder { - private readonly roots: Array = []; - private readonly testers: Array> = []; - private readonly config: BuilderConfig; - private readonly patternUtils: PatternUtils; - readonly optionalParamDefaults: OptionalParamDefaults; - - constructor(config: BuilderConfig) { - this.config = config; - this.patternUtils = new PatternUtils(config); - this.optionalParamDefaults = config.optionalParamDefaults ?? new OptionalParamDefaults(); - } - - getRoot(methodCode: number): RadixNode | null { - return this.roots[methodCode] ?? null; - } - - getTesters(methodCode: number): Array { - return this.testers[methodCode] ?? []; - } - - insert( - methodCode: number, - parts: PathPart[], - handlerIndex: number, - ): Result { - // Expand optional params into multiple insertion paths - const expansions = this.expandOptional(parts, handlerIndex); - - for (const { parts: expandedParts, handlerIndex: hIdx } of expansions) { - const r = this.insertOne(methodCode, expandedParts, hIdx); - - if (isErr(r)) { - return r; - } - } - } - - private expandOptional( - parts: PathPart[], - handlerIndex: number, - ): Array<{ parts: PathPart[]; handlerIndex: number }> { - // Find optional params - const optionalIndices: number[] = []; - const optionalNames: string[] = []; - - for (let i = 0; i < parts.length; i++) { - const part = parts[i]!; - - if (part.type === 'param' && part.optional) { - optionalIndices.push(i); - optionalNames.push(part.name); - } - } - - if (optionalIndices.length === 0) { - return [{ parts, handlerIndex }]; - } - - // Record optional param defaults - this.optionalParamDefaults.record(handlerIndex, optionalNames); - - const result: Array<{ parts: PathPart[]; handlerIndex: number }> = []; - - // Full path (with all optional params present — mark as non-optional for insertion) - const fullParts = parts.map(p => - p.type === 'param' && p.optional - ? { ...p, optional: false } - : p, - ); - result.push({ parts: fullParts, handlerIndex }); - - // For each optional param, create a version without it - // Process from right to left to handle nested optionals correctly - for (let bit = 1; bit < (1 << optionalIndices.length); bit++) { - const filtered: PathPart[] = []; - let prevStatic: PathPart | null = null; - - for (let i = 0; i < parts.length; i++) { - // Check if this index should be skipped - let skip = false; - - for (let j = 0; j < optionalIndices.length; j++) { - if (optionalIndices[j] === i && (bit & (1 << j))) { - skip = true; - break; - } - } - - if (skip) { - // Trim trailing '/' from the preceding static part - if (filtered.length > 0) { - const prev = filtered[filtered.length - 1]!; - - if (prev.type === 'static' && prev.value.endsWith('/')) { - const trimmed = prev.value.slice(0, -1); - - if (trimmed.length > 0) { - filtered[filtered.length - 1] = { type: 'static', value: trimmed }; - } else { - filtered.pop(); - } - } - } - - continue; - } - - const part = parts[i]!; - - if (part.type === 'param' && part.optional) { - filtered.push({ ...part, optional: false }); - } else { - filtered.push(part); - } - } - - // Merge adjacent static parts and fix separators - const merged = this.mergeStaticParts(filtered); - - if (merged.length > 0) { - result.push({ parts: merged, handlerIndex }); - } - } - - return result; - } - - private mergeStaticParts(parts: PathPart[]): PathPart[] { - const result: PathPart[] = []; - - for (const part of parts) { - if (part.type === 'static' && result.length > 0) { - const prev = result[result.length - 1]!; - - if (prev.type === 'static') { - // Merge: remove duplicate '/' at boundary - let merged = prev.value + part.value; - - merged = merged.replace(/\/\//g, '/'); - result[result.length - 1] = { type: 'static', value: merged }; - - continue; - } - } - - result.push(part); - } - - return result; - } - - private insertOne( - methodCode: number, - parts: PathPart[], - handlerIndex: number, - ): Result { - // Ensure root exists for this method - if (!this.roots[methodCode]) { - this.roots[methodCode] = createRadixNode(''); - this.testers[methodCode] = []; - } - - let node = this.roots[methodCode]!; - const testerList = this.testers[methodCode]!; - - for (let i = 0; i < parts.length; i++) { - const part = parts[i]!; - - if (part.type === 'static') { - // Check conflict: inserting static child on node that has a wildcard - if (node.wildcardStore !== null) { - return err({ - kind: 'route-conflict', - message: `Static route conflicts with existing wildcard '*${node.wildcardName}' at the same position`, - segment: part.value, - }); - } - - node = this.insertStaticPart(node, part.value); - } else if (part.type === 'param') { - // Check conflict: inserting param on node that has a wildcard - if (node.wildcardStore !== null) { - return err({ - kind: 'route-conflict', - message: `Parameter ':${part.name}' conflicts with existing wildcard '*${node.wildcardName}' at the same position`, - segment: part.name, - }); - } - - const paramResult = this.insertParam(node, part, testerList); - - if (isErr(paramResult)) { - return paramResult; - } - - node = paramResult; - } else { - // wildcard — must be last - return this.insertWildcard(node, part.name, part.origin, handlerIndex); - } - } - - // Set handler on terminal node - if (node.store !== null) { - return err({ - kind: 'route-duplicate', - message: 'Route already exists', - suggestion: 'Use a different path or HTTP method', - }); - } - - node.store = handlerIndex; - } - - /** - * Insert a static string into the trie using LCP (Longest Common Prefix) splitting. - * Returns the node at the end of the inserted path. - */ - private insertStaticPart(node: RadixNode, part: string): RadixNode { - let current = node; - let remaining = part; - - while (remaining.length > 0) { - // Check if first char matches any existing inert child - const firstChar = remaining.charCodeAt(0); - - if (current.inert !== null) { - const child = current.inert[firstChar]; - - if (child !== undefined) { - // Find LCP between remaining and child.part - const childPart = child.part; - const minLen = Math.min(remaining.length, childPart.length); - let commonLen = 0; - - for (let i = 0; i < minLen; i++) { - if (remaining.charCodeAt(i) !== childPart.charCodeAt(i)) { - break; - } - - commonLen++; - } - - if (commonLen === childPart.length) { - // Child part is fully consumed — continue with remainder - remaining = remaining.substring(commonLen); - current = child; - - continue; - } - - // Partial match — split the child node - const splitNode = createRadixNode(childPart.substring(0, commonLen)); - - // The original child becomes a child of the split node - const oldChild = child; - oldChild.part = childPart.substring(commonLen); - - splitNode.inert = { [oldChild.part.charCodeAt(0)]: oldChild }; - - // Replace child in parent - current.inert[firstChar] = splitNode; - - // Continue inserting the remaining part under splitNode - remaining = remaining.substring(commonLen); - current = splitNode; - - continue; - } - } - - // No matching child — create new leaf - const newNode = createRadixNode(remaining); - - if (current.inert === null) { - current.inert = {}; - } - - current.inert[firstChar] = newNode; - - return newNode; - } - - return current; - } - - private insertParam( - node: RadixNode, - part: { name: string; pattern: string | null }, - testerList: Array, - ): Result { - // Compile pattern if present - let compiledPattern: RegExp | null = null; - let normalizedSource: string | null = null; - - if (part.pattern !== null) { - const normResult = this.patternUtils.normalizeParamPatternSource(part.pattern); - - if (isErr(normResult)) { - return normResult; - } - - normalizedSource = normResult; - - try { - compiledPattern = this.patternUtils.acquireCompiledPattern(normalizedSource, ''); - } catch (e) { - return err({ - kind: 'route-parse', - message: `Invalid regex pattern '${part.pattern}': ${e instanceof Error ? e.message : String(e)}`, - segment: part.pattern, - }); - } - } - - // Find existing param child with same name and pattern - let paramNode = node.params; - let prevParam: ParamNode | null = null; - - while (paramNode !== null) { - if (paramNode.name === part.name && paramNode.patternSource === normalizedSource) { - // Exact match — reuse existing param node - // Ensure the inert child exists for continuation - if (paramNode.inert === null) { - paramNode.inert = createRadixNode(''); - } - - return paramNode.inert; - } - - // Check conflict: same name, different pattern - if (paramNode.name === part.name && paramNode.patternSource !== normalizedSource) { - return err({ - kind: 'route-conflict', - message: `Parameter ':${part.name}' has conflicting regex patterns`, - segment: part.name, - }); - } - - prevParam = paramNode; - paramNode = paramNode.next; - } - - // Create new param node - const newParam = createParamNode(part.name); - newParam.pattern = compiledPattern; - newParam.patternSource = normalizedSource; - - // Build pattern tester - if (compiledPattern !== null && normalizedSource !== null) { - const tester = buildPatternTester(normalizedSource, compiledPattern, { - maxExecutionMs: this.config.regexSafety?.maxExecutionMs, - }); - // Store tester — the index matches the param's position in the linked list - testerList.push(tester); - } - - // Link into param chain - if (prevParam !== null) { - prevParam.next = newParam; - } else { - node.params = newParam; - } - - // Create inert child for continuation - newParam.inert = createRadixNode(''); - - return newParam.inert; - } - - private insertWildcard( - node: RadixNode, - name: string, - origin: 'star' | 'multi', - handlerIndex: number, - ): Result { - if (node.wildcardStore !== null) { - if (node.wildcardName !== name) { - return err({ - kind: 'route-conflict', - message: `Wildcard '*${name}' conflicts with existing wildcard '*${node.wildcardName}'`, - segment: name, - }); - } - - return err({ - kind: 'route-duplicate', - message: `Wildcard route already exists at this position`, - }); - } - - // Check conflict with existing params - if (node.params !== null) { - return err({ - kind: 'route-conflict', - message: `Wildcard '*${name}' conflicts with existing parameter at the same position`, - segment: name, - }); - } - - node.wildcardStore = handlerIndex; - node.wildcardName = name; - node.wildcardOrigin = origin; - } -} diff --git a/packages/router/src/builder/radix-node.spec.ts b/packages/router/src/builder/radix-node.spec.ts deleted file mode 100644 index d7e84a5..0000000 --- a/packages/router/src/builder/radix-node.spec.ts +++ /dev/null @@ -1,122 +0,0 @@ -import { describe, it, expect } from 'bun:test'; - -import { createRadixNode, createParamNode } from './radix-node'; - -describe('createRadixNode', () => { - it('should set part from argument', () => { - const node = createRadixNode('/users'); - expect(node.part).toBe('/users'); - }); - - it('should initialize store as null', () => { - const node = createRadixNode(''); - expect(node.store).toBeNull(); - }); - - it('should initialize inert as null', () => { - const node = createRadixNode(''); - expect(node.inert).toBeNull(); - }); - - it('should initialize params as null', () => { - const node = createRadixNode(''); - expect(node.params).toBeNull(); - }); - - it('should initialize wildcardStore as null', () => { - const node = createRadixNode(''); - expect(node.wildcardStore).toBeNull(); - }); - - it('should initialize wildcardName as null', () => { - const node = createRadixNode(''); - expect(node.wildcardName).toBeNull(); - }); - - it('should initialize wildcardOrigin as null', () => { - const node = createRadixNode(''); - expect(node.wildcardOrigin).toBeNull(); - }); - - it('should create root node with empty string', () => { - const root = createRadixNode(''); - expect(root.part).toBe(''); - }); - - it('should allow mutation of properties', () => { - const node = createRadixNode('/api'); - node.store = 0; - node.wildcardStore = 1; - node.wildcardName = 'path'; - node.wildcardOrigin = 'star'; - - expect(node.store).toBe(0); - expect(node.wildcardStore).toBe(1); - expect(node.wildcardName).toBe('path'); - expect(node.wildcardOrigin).toBe('star'); - }); - - it('should allow building a simple tree structure', () => { - const root = createRadixNode(''); - const child = createRadixNode('/users'); - - root.inert = { [47]: child }; // charCode for '/' - - expect(root.inert[47]).toBe(child); - expect(root.inert[47]!.part).toBe('/users'); - }); -}); - -describe('createParamNode', () => { - it('should set name from argument', () => { - const node = createParamNode('id'); - expect(node.name).toBe('id'); - }); - - it('should initialize store as null', () => { - const node = createParamNode('id'); - expect(node.store).toBeNull(); - }); - - it('should initialize inert as null', () => { - const node = createParamNode('id'); - expect(node.inert).toBeNull(); - }); - - it('should initialize pattern as null', () => { - const node = createParamNode('id'); - expect(node.pattern).toBeNull(); - }); - - it('should initialize patternSource as null', () => { - const node = createParamNode('id'); - expect(node.patternSource).toBeNull(); - }); - - it('should initialize next as null', () => { - const node = createParamNode('id'); - expect(node.next).toBeNull(); - }); - - it('should allow mutation of properties', () => { - const node = createParamNode('id'); - node.store = 5; - node.pattern = /^\d+$/; - node.patternSource = '^\\d+$'; - - expect(node.store).toBe(5); - expect(node.pattern).toEqual(/^\d+$/); - expect(node.patternSource).toBe('^\\d+$'); - }); - - it('should support building a chain via next', () => { - const first = createParamNode('id'); - const second = createParamNode('name'); - - first.next = second; - - expect(first.next).toBe(second); - expect(first.next.name).toBe('name'); - expect(second.next).toBeNull(); - }); -}); diff --git a/packages/router/src/builder/radix-node.ts b/packages/router/src/builder/radix-node.ts deleted file mode 100644 index 705e641..0000000 --- a/packages/router/src/builder/radix-node.ts +++ /dev/null @@ -1,54 +0,0 @@ -export interface RadixNode { - /** Edge label (root = '/') */ - part: string; - /** Handler index (terminal node) or null */ - store: number | null; - /** charCode → child node (plain object for JSC indexed storage) */ - inert: Record | null; - /** Parameter child chain */ - params: ParamNode | null; - /** Wildcard handler index */ - wildcardStore: number | null; - /** Wildcard param name */ - wildcardName: string | null; - /** Wildcard origin: 'star' = empty allowed, 'multi' = min 1 char */ - wildcardOrigin: 'star' | 'multi' | null; -} - -export interface ParamNode { - /** Parameter name */ - name: string; - /** Handler index if terminal */ - store: number | null; - /** Next static part after this param */ - inert: RadixNode | null; - /** Regex pattern for validation */ - pattern: RegExp | null; - /** Original regex source string */ - patternSource: string | null; - /** Next param with different pattern at same level */ - next: ParamNode | null; -} - -export function createRadixNode(part: string): RadixNode { - return { - part, - store: null, - inert: null, - params: null, - wildcardStore: null, - wildcardName: null, - wildcardOrigin: null, - }; -} - -export function createParamNode(name: string): ParamNode { - return { - name, - store: null, - inert: null, - pattern: null, - patternSource: null, - next: null, - }; -} diff --git a/packages/router/src/builder/regex-safety.spec.ts b/packages/router/src/builder/regex-safety.spec.ts deleted file mode 100644 index 2112b74..0000000 --- a/packages/router/src/builder/regex-safety.spec.ts +++ /dev/null @@ -1,212 +0,0 @@ -import { describe, it, expect } from 'bun:test'; - -import { assessRegexSafety } from './regex-safety'; - -const SAFE_CONFIG = { - maxLength: 256, - forbidBackreferences: true, - forbidBacktrackingTokens: true, -}; - -describe('assessRegexSafety', () => { - // ── Basic safe/unsafe ── - - it('should return safe=true for a simple safe pattern', () => { - const result = assessRegexSafety('\\d+', SAFE_CONFIG); - - expect(result.safe).toBe(true); - }); - - it('should return safe=false when pattern exceeds maxLength', () => { - const result = assessRegexSafety('a'.repeat(10), { ...SAFE_CONFIG, maxLength: 5 }); - - expect(result.safe).toBe(false); - expect(result.reason).toContain('exceeds limit'); - }); - - // ── Backreferences ── - - it('should reject backreference when forbidBackreferences=true', () => { - const result = assessRegexSafety('(\\w+)\\1', SAFE_CONFIG); - - expect(result.safe).toBe(false); - expect(result.reason).toContain('Backreferences'); - }); - - it('should allow backreference when forbidBackreferences=false', () => { - const result = assessRegexSafety('(\\w+)\\1', { ...SAFE_CONFIG, forbidBackreferences: false }); - - expect(result.safe).toBe(true); - }); - - it('should reject named backreference', () => { - const result = assessRegexSafety('(?\\w+)\\k', SAFE_CONFIG); - - expect(result.safe).toBe(false); - expect(result.reason).toContain('Backreferences'); - }); - - // ── Nested unlimited quantifiers (* / +) ── - - it('should reject nested unlimited quantifiers (a+)+', () => { - const result = assessRegexSafety('(a+)+', SAFE_CONFIG); - - expect(result.safe).toBe(false); - expect(result.reason).toContain('Nested unlimited'); - }); - - it('should reject nested unlimited quantifiers (a*)*', () => { - const result = assessRegexSafety('(a*)*', SAFE_CONFIG); - - expect(result.safe).toBe(false); - expect(result.reason).toContain('Nested unlimited'); - }); - - it('should allow nested quantifiers when forbidBacktrackingTokens=false', () => { - const result = assessRegexSafety('(a+)+', { ...SAFE_CONFIG, forbidBacktrackingTokens: false }); - - expect(result.safe).toBe(true); - }); - - it('should allow single quantifier (not nested)', () => { - const result = assessRegexSafety('a+b+', SAFE_CONFIG); - - expect(result.safe).toBe(true); - }); - - // ── Character class handling (skipCharClass) ── - - it('should treat character class as single atom', () => { - const result = assessRegexSafety('[abc]+', SAFE_CONFIG); - - expect(result.safe).toBe(true); - }); - - it('should handle escape inside character class', () => { - const result = assessRegexSafety('[a\\]b]+', SAFE_CONFIG); - - expect(result.safe).toBe(true); - }); - - it('should handle unclosed character class', () => { - const result = assessRegexSafety('[abc', SAFE_CONFIG); - - expect(result.safe).toBe(true); - }); - - it('should handle character class with range', () => { - const result = assessRegexSafety('[a-z]+[0-9]+', SAFE_CONFIG); - - expect(result.safe).toBe(true); - }); - - it('should detect nested unlimited through character class: ([a-z]+)*', () => { - const result = assessRegexSafety('([a-z]+)*', SAFE_CONFIG); - - expect(result.safe).toBe(false); - expect(result.reason).toContain('Nested unlimited'); - }); - - // ── Curly brace quantifiers ── - - it('should detect nested unlimited with {n,} quantifier: (a{1,})+', () => { - const result = assessRegexSafety('(a{1,})+', SAFE_CONFIG); - - expect(result.safe).toBe(false); - expect(result.reason).toContain('Nested unlimited'); - }); - - it('should detect consecutive unlimited curly braces: a{1,}{1,}', () => { - const result = assessRegexSafety('a{1,}{1,}', SAFE_CONFIG); - - expect(result.safe).toBe(false); - expect(result.reason).toContain('Nested unlimited'); - }); - - it('should treat {n} (fixed) quantifier as non-unlimited', () => { - const result = assessRegexSafety('a{3}b+', SAFE_CONFIG); - - expect(result.safe).toBe(true); - }); - - it('should handle unclosed curly brace as literal', () => { - const result = assessRegexSafety('a{b+', SAFE_CONFIG); - - expect(result.safe).toBe(true); - }); - - it('should detect {n,m} as unlimited quantifier', () => { - const result = assessRegexSafety('(a{1,3})+', SAFE_CONFIG); - - expect(result.safe).toBe(false); - expect(result.reason).toContain('Nested unlimited'); - }); - - it('should propagate unlimited through curly brace inside group to parent stack', () => { - // (a{1,}) has hadUnlimited in the group; outer quantifier + triggers detection - const result = assessRegexSafety('(a{1,})+', SAFE_CONFIG); - - expect(result.safe).toBe(false); - }); - - // ── Group nesting with stack propagation ── - - it('should propagate unlimited from inner group to parent group frame', () => { - // ((a+)b) — inner group has unlimited, propagates hadUnlimited to outer frame - const result = assessRegexSafety('((a+)b)', SAFE_CONFIG); - - expect(result.safe).toBe(true); // not nested — no second quantifier - }); - - it('should detect deeply nested unlimited: ((a+)+)', () => { - const result = assessRegexSafety('((a+)+)', SAFE_CONFIG); - - expect(result.safe).toBe(false); - }); - - it('should detect triple nested with propagation: ((a+)+)+', () => { - const result = assessRegexSafety('((a+)+)+', SAFE_CONFIG); - - expect(result.safe).toBe(false); - }); - - // ── Escape handling in main loop ── - - it('should skip escaped characters in main pattern', () => { - const result = assessRegexSafety('\\(\\)+', SAFE_CONFIG); - - expect(result.safe).toBe(true); - }); - - it('should handle escaped quantifier chars', () => { - const result = assessRegexSafety('a\\+b+', SAFE_CONFIG); - - expect(result.safe).toBe(true); - }); - - // ── Mixed scenarios ── - - it('should handle complex safe pattern: ^[a-z]{2,4}\\d+$', () => { - const result = assessRegexSafety('^[a-z]{2,4}\\d+$', SAFE_CONFIG); - - expect(result.safe).toBe(true); - }); - - it('should handle empty pattern', () => { - const result = assessRegexSafety('', SAFE_CONFIG); - - expect(result.safe).toBe(true); - }); - - it('should handle pattern with only a group: (a)', () => { - const result = assessRegexSafety('(a)', SAFE_CONFIG); - - expect(result.safe).toBe(true); - }); - - it('should handle alternation inside group: (a|b)+', () => { - const result = assessRegexSafety('(a|b)+', SAFE_CONFIG); - - expect(result.safe).toBe(true); - }); -}); diff --git a/packages/router/src/builder/regex-safety.ts b/packages/router/src/builder/regex-safety.ts deleted file mode 100644 index a475418..0000000 --- a/packages/router/src/builder/regex-safety.ts +++ /dev/null @@ -1,147 +0,0 @@ -import type { QuantifierFrame, RegexSafetyAssessment, RegexSafetyConfig } from './types'; - -import { BACKREFERENCE_PATTERN } from './constants'; - -function hasNestedUnlimitedQuantifiers(pattern: string): boolean { - const stack: QuantifierFrame[] = []; - let lastAtomUnlimited = false; - - for (let i = 0; i < pattern.length; i++) { - const char = pattern[i]; - - if (char === '\\') { - i++; - - lastAtomUnlimited = false; - - continue; - } - - if (char === '[') { - i = skipCharClass(pattern, i); - lastAtomUnlimited = false; - - continue; - } - - if (char === '(') { - stack.push({ hadUnlimited: false }); - - lastAtomUnlimited = false; - - continue; - } - - if (char === ')') { - const frame = stack.pop(); - const groupUnlimited = Boolean(frame?.hadUnlimited); - - if (groupUnlimited && stack.length) { - const frame = stack[stack.length - 1]; - - if (frame) { - frame.hadUnlimited = true; - } - } - - lastAtomUnlimited = groupUnlimited; - - continue; - } - - if (char === '*' || char === '+') { - if (lastAtomUnlimited) { - return true; - } - - lastAtomUnlimited = true; - - if (stack.length) { - const frame = stack[stack.length - 1]; - - if (frame) { - frame.hadUnlimited = true; - } - } - - continue; - } - - if (char === '{') { - const close = pattern.indexOf('}', i + 1); - - if (close === -1) { - lastAtomUnlimited = false; - - continue; - } - - const slice = pattern.slice(i + 1, close); - const unlimited = slice.includes(','); - - if (unlimited) { - if (lastAtomUnlimited) { - return true; - } - - lastAtomUnlimited = true; - - if (stack.length) { - const frame = stack[stack.length - 1]; - - if (frame) { - frame.hadUnlimited = true; - } - } - } else { - lastAtomUnlimited = false; - } - - i = close; - - continue; - } - - lastAtomUnlimited = false; - } - - return false; -} - -function skipCharClass(pattern: string, start: number): number { - let i = start + 1; - - while (i < pattern.length) { - const char = pattern[i]; - - if (char === '\\') { - i += 2; - - continue; - } - - if (char === ']') { - return i; - } - - i++; - } - - return pattern.length - 1; -} - -export function assessRegexSafety(pattern: string, options: RegexSafetyConfig): RegexSafetyAssessment { - if (pattern.length > options.maxLength) { - return { safe: false, reason: `Regex length ${pattern.length} exceeds limit ${options.maxLength}` }; - } - - if (options.forbidBackreferences && BACKREFERENCE_PATTERN.test(pattern)) { - return { safe: false, reason: 'Backreferences are not allowed in route params' }; - } - - if (options.forbidBacktrackingTokens && hasNestedUnlimitedQuantifiers(pattern)) { - return { safe: false, reason: 'Nested unlimited quantifiers detected' }; - } - - return { safe: true }; -} diff --git a/packages/router/src/builder/route-expand.spec.ts b/packages/router/src/builder/route-expand.spec.ts new file mode 100644 index 0000000..b0daa5b --- /dev/null +++ b/packages/router/src/builder/route-expand.spec.ts @@ -0,0 +1,123 @@ +import { describe, it, expect } from 'bun:test'; + +import type { PathPart } from '../tree'; + +import { expectDefined } from '../../test/test-utils'; +import { PathPartType } from '../tree'; +import { expandOptional, MAX_OPTIONAL_SEGMENTS_PER_ROUTE } from './route-expand'; + +type ParamPart = Extract; + +function isNamedParam(p: PathPart, name: string): p is ParamPart { + return p.type === PathPartType.Param && p.name === name; +} + +const param = (name: string, optional = false): PathPart => ({ + type: PathPartType.Param, + name, + pattern: null, + optional, +}); + +const staticPart = (value: string): PathPart => { + const body = value.length > 1 ? value.slice(1) : ''; + const rawSegments = body === '' ? [] : body.split('/'); + const segments = rawSegments.length > 0 && rawSegments[rawSegments.length - 1] === '' ? rawSegments.slice(0, -1) : rawSegments; + return { type: PathPartType.Static, value, segments }; +}; + +describe('expandOptional — no optionals', () => { + it('should pass parts through unchanged', () => { + const parts: PathPart[] = [staticPart('/users/'), param('id')]; + + const result = expandOptional(parts); + + expect(result).toEqual([{ parts, isOptionalExpansion: false }]); + }); +}); + +describe('expandOptional — 2^N expansion', () => { + it('should produce 2^N variants for N optionals', () => { + const parts: PathPart[] = [staticPart('/'), param('a', true), staticPart('/'), param('b', true)]; + + const result = expandOptional(parts); + + expect(result.length).toBe(4); + }); + + it('should keep the mid-position N=1 i18n shape to exactly 2 variants', () => { + const parts: PathPart[] = [staticPart('/'), param('lang', true), staticPart('/posts')]; + + const result = expandOptional(parts); + + expect(result.length).toBe(2); + expect(result[0]!.parts).toEqual([staticPart('/'), param('lang'), staticPart('/posts')]); + expect(result[1]!.parts).toEqual([staticPart('/posts')]); + }); + + it('should honor MAX_OPTIONAL_SEGMENTS_PER_ROUTE at the boundary (exactly 2^N variants)', () => { + const parts: PathPart[] = [ + staticPart('/'), + ...Array.from({ length: MAX_OPTIONAL_SEGMENTS_PER_ROUTE }, (_, i) => param(`p${i}`, true)), + ]; + const result = expandOptional(parts); + expect(result.length).toBe(1 << MAX_OPTIONAL_SEGMENTS_PER_ROUTE); + }); + + it('should mark optionals as required (optional=false) inside each variant for insertion', () => { + const parts: PathPart[] = [staticPart('/'), param('id', true)]; + + const result = expandOptional(parts); + + const fullVariant = result[0]!; + const idPart = expectDefined(fullVariant.parts.find(p => isNamedParam(p, 'id'))); + expect(idPart.optional).toBe(false); + }); +}); + +describe('expandOptional — drop-time slash trim', () => { + it('should trim trailing slash of preceding static when optional is dropped', () => { + const parts: PathPart[] = [staticPart('/users/'), param('id', true)]; + + const result = expandOptional(parts); + + const dropped = result[1]!.parts; + expect(dropped).toEqual([{ type: PathPartType.Static, value: '/users', segments: ['users'] }]); + }); + + it('should pop the static entirely when trim leaves an empty value', () => { + const parts: PathPart[] = [staticPart('/'), param('id', true)]; + + const result = expandOptional(parts); + + expect(result[1]!.parts).toEqual([{ type: PathPartType.Static, value: '/', segments: [] }]); + }); +}); + +describe('expandOptional — post-merge `//` collapse', () => { + it('should collapse `//` produced by joining two static parts', () => { + const parts: PathPart[] = [staticPart('/a/'), param('x', true), staticPart('/b')]; + + const result = expandOptional(parts); + + const dropped = result[1]!.parts; + expect(dropped).toEqual([{ type: PathPartType.Static, value: '/a/b', segments: ['a', 'b'] }]); + }); + + it('should not leave a trailing empty segment when a kept param follows a merged static', () => { + const parts: PathPart[] = [staticPart('/a/'), param('v', true), staticPart('/users/'), param('id', true)]; + + const result = expandOptional(parts); + + // result[1] drops the first optional (v) and keeps id: merged static + kept param. + expect(result[1]!.parts).toEqual([{ type: PathPartType.Static, value: '/a/users/', segments: ['a', 'users'] }, param('id')]); + }); + + it('should preserve a non-trailing-slash static when an adjacent optional is dropped', () => { + const parts: PathPart[] = [staticPart('/users'), param('id', true)]; + + const result = expandOptional(parts); + + expect(result[1]!.parts).toEqual([staticPart('/users')]); + }); +}); diff --git a/packages/router/src/builder/route-expand.ts b/packages/router/src/builder/route-expand.ts new file mode 100644 index 0000000..3490751 --- /dev/null +++ b/packages/router/src/builder/route-expand.ts @@ -0,0 +1,128 @@ +import type { PathPart } from '../tree'; + +import { PathPartType } from '../tree'; + +const MAX_OPTIONAL_SEGMENTS_PER_ROUTE = 4; + +interface ExpandedRoute { + parts: PathPart[]; + isOptionalExpansion: boolean; +} + +function expandOptional(parts: PathPart[]): ExpandedRoute[] { + let firstOptional = -1; + for (let i = 0; i < parts.length; i++) { + const p = parts[i]!; + if (p.type === PathPartType.Param && p.optional) { + firstOptional = i; + break; + } + } + if (firstOptional === -1) { + return [{ parts, isOptionalExpansion: false }]; + } + + const optionalIndices = collectOptionalIndices(parts, firstOptional); + return enumerateExpansions(parts, optionalIndices); +} + +function collectOptionalIndices(parts: PathPart[], start: number): number[] { + const indices: number[] = []; + + for (let i = start; i < parts.length; i++) { + const part = parts[i]!; + + if (part.type === PathPartType.Param && part.optional) { + indices.push(i); + } + } + + return indices; +} + +function createStaticPart(value: string): PathPart { + const body = value.length > 1 ? value.slice(1) : ''; + const rawSegments = body === '' ? [] : body.split('/'); + const segments = rawSegments.length > 0 && rawSegments[rawSegments.length - 1] === '' ? rawSegments.slice(0, -1) : rawSegments; + + return { type: PathPartType.Static, value, segments }; +} + +function enumerateExpansions(parts: PathPart[], optionalIndices: number[]): ExpandedRoute[] { + const result: ExpandedRoute[] = []; + + const fullParts = parts.map(p => (p.type === PathPartType.Param && p.optional ? { ...p, optional: false } : p)); + result.push({ parts: fullParts, isOptionalExpansion: false }); + + for (let bit = 1; bit < 1 << optionalIndices.length; bit++) { + const filtered = filterDroppedSegments(parts, optionalIndices, bit); + const merged = mergeStaticParts(filtered); + const variantParts = merged.length > 0 ? merged : [createStaticPart('/')]; + result.push({ parts: variantParts, isOptionalExpansion: true }); + } + + return result; +} + +function filterDroppedSegments(parts: PathPart[], optionalIndices: number[], dropMask: number): PathPart[] { + const filtered: PathPart[] = []; + for (let i = 0; i < parts.length; i++) { + if (isDroppedAt(i, optionalIndices, dropMask)) { + trimTrailingSlashOnDrop(filtered); + continue; + } + const part = parts[i]!; + filtered.push(part.type === PathPartType.Param && part.optional ? { ...part, optional: false } : part); + } + return filtered; +} + +function isDroppedAt(partIndex: number, optionalIndices: number[], dropMask: number): boolean { + for (let j = 0; j < optionalIndices.length; j++) { + if (optionalIndices[j] === partIndex && dropMask & (1 << j)) { + return true; + } + } + return false; +} + +function trimTrailingSlashOnDrop(filtered: PathPart[]): void { + if (filtered.length === 0) { + return; + } + const prev = filtered[filtered.length - 1]!; + if (prev.type !== PathPartType.Static || !prev.value.endsWith('/')) { + return; + } + const trimmed = prev.value.slice(0, -1); + if (trimmed.length > 0) { + filtered[filtered.length - 1] = createStaticPart(trimmed); + } else { + filtered.pop(); + } +} + +function mergeStaticParts(parts: PathPart[]): PathPart[] { + const result: PathPart[] = []; + + for (const part of parts) { + if (part.type === PathPartType.Static && result.length > 0) { + const prev = result[result.length - 1]!; + + if (prev.type === PathPartType.Static) { + let merged = prev.value + part.value; + + merged = merged.replace(/\/{2,}/g, '/'); + result[result.length - 1] = createStaticPart(merged); + + continue; + } + } + + result.push(part); + } + + return result; +} + +export { expandOptional, MAX_OPTIONAL_SEGMENTS_PER_ROUTE }; diff --git a/packages/router/src/builder/types.ts b/packages/router/src/builder/types.ts deleted file mode 100644 index f2a7908..0000000 --- a/packages/router/src/builder/types.ts +++ /dev/null @@ -1,25 +0,0 @@ -import type { RegexSafetyOptions, RouterWarning } from '../types'; - -import { OptionalParamDefaults } from './optional-param-defaults'; - -export interface BuilderConfig { - regexSafety?: RegexSafetyOptions; - regexAnchorPolicy?: 'warn' | 'error' | 'silent'; - optionalParamDefaults?: OptionalParamDefaults; - onWarn?: (warning: RouterWarning) => void; -} - -export interface QuantifierFrame { - hadUnlimited: boolean; -} - -export interface RegexSafetyConfig { - maxLength: number; - forbidBacktrackingTokens: boolean; - forbidBackreferences: boolean; -} - -export interface RegexSafetyAssessment { - safe: boolean; - reason?: string; -} diff --git a/packages/router/src/cache.spec.ts b/packages/router/src/cache.spec.ts index d488327..73569d0 100644 --- a/packages/router/src/cache.spec.ts +++ b/packages/router/src/cache.spec.ts @@ -3,8 +3,6 @@ import { describe, it, expect } from 'bun:test'; import { RouterCache } from './cache'; describe('RouterCache', () => { - // ── HP ── - it('should return stored value when key exists', () => { const cache = new RouterCache(10); cache.set('/users', 'handler'); @@ -12,23 +10,6 @@ describe('RouterCache', () => { expect(cache.get('/users')).toBe('handler'); }); - it('should return null when value was stored as null', () => { - const cache = new RouterCache(10); - cache.set('/not-found', null); - - expect(cache.get('/not-found')).toBeNull(); - }); - - it('should return null (not undefined) for null-valued entry', () => { - const cache = new RouterCache(5); - cache.set('/404', null); - - const result = cache.get('/404'); - - expect(result).toBeNull(); - expect(result).not.toBeUndefined(); - }); - it('should return updated value after overwriting existing key', () => { const cache = new RouterCache(10); cache.set('/users', 'v1'); @@ -37,6 +18,20 @@ describe('RouterCache', () => { expect(cache.get('/users')).toBe('v2'); }); + it('should not consume capacity when overwriting an existing key (no eviction of other keys)', () => { + const cache = new RouterCache(2); + cache.set('/a', 'a'); + cache.set('/b', 'b'); + // Overwriting an existing key must reuse its slot — not allocate a new one, + // which would inflate count and evict the still-live '/b'. + cache.set('/a', 'a2'); + cache.set('/a', 'a3'); + cache.set('/a', 'a4'); + + expect(cache.get('/a')).toBe('a4'); + expect(cache.get('/b')).toBe('b'); + }); + it('should insert new entries up to maxSize without eviction', () => { const cache = new RouterCache(3); cache.set('/a', 'a'); @@ -48,26 +43,16 @@ describe('RouterCache', () => { expect(cache.get('/c')).toBe('c'); }); - it('should increments count on each new insert and trigger eviction only past maxSize', () => { + it('should increment count on each insert and only evict the oldest entry once capacity is exceeded', () => { const cache = new RouterCache(2); cache.set('/a', 'a'); cache.set('/b', 'b'); - cache.set('/c', 'c'); // triggers eviction — no error - + cache.set('/c', 'c'); expect(cache.get('/c')).toBe('c'); + const survivors = [cache.get('/a'), cache.get('/b')].filter(v => v !== undefined); + expect(survivors).toHaveLength(1); }); - it('should allow re-insertion after clear', () => { - const cache = new RouterCache(2); - cache.set('/a', 'a'); - cache.clear(); - cache.set('/a', 'new-a'); - - expect(cache.get('/a')).toBe('new-a'); - }); - - // ── NE ── - it('should return undefined when key was never set', () => { const cache = new RouterCache(10); @@ -83,23 +68,10 @@ describe('RouterCache', () => { it('should return undefined after evicted key is accessed', () => { const cache = new RouterCache(1); cache.set('/a', 'a'); - cache.set('/b', 'b'); // evicts /a - - expect(cache.get('/a')).toBeUndefined(); - }); - - it('should return undefined for any key after clear', () => { - const cache = new RouterCache(5); - cache.set('/a', 'a'); cache.set('/b', 'b'); - cache.clear(); - expect(cache.get('/a')).toBeUndefined(); - expect(cache.get('/b')).toBeUndefined(); }); - // ── ED ── - it('should evict existing entry when maxSize is 1 and second entry is inserted', () => { const cache = new RouterCache(1); cache.set('/first', 'first'); @@ -113,8 +85,7 @@ describe('RouterCache', () => { const cache = new RouterCache(2); cache.set('/a', 'a'); cache.set('/b', 'b'); - cache.set('/c', 'c'); // evicts /a - + cache.set('/c', 'c'); expect(cache.get('/a')).toBeUndefined(); expect(cache.get('/b')).toBe('b'); expect(cache.get('/c')).toBe('c'); @@ -128,116 +99,76 @@ describe('RouterCache', () => { }); it('should wrap hand correctly when eviction reaches the last slot', () => { - // maxSize=2: evict /a (slot 0) → hand=1; next evict /b (slot 1) → hand wraps to 0 const cache = new RouterCache(2); - cache.set('/a', 'a'); // slot 0 - cache.set('/b', 'b'); // slot 1 - cache.set('/c', 'c'); // evicts /a, hand moves to 1 - cache.set('/d', 'd'); // evicts /b, hand wraps to 0 - + cache.set('/a', 'a'); + cache.set('/b', 'b'); + cache.set('/c', 'c'); + cache.set('/d', 'd'); expect(cache.get('/a')).toBeUndefined(); expect(cache.get('/b')).toBeUndefined(); expect(cache.get('/c')).toBe('c'); expect(cache.get('/d')).toBe('d'); }); - // ── CO ── - it('should complete full clock sweep and evict first entry when all entries have used=true', () => { - // Both entries inserted with used=true. - // evict(): hand=0 /a→false; hand=1 /b→false; wrap=0 /a→false→evict. const cache = new RouterCache(2); cache.set('/a', 'a'); cache.set('/b', 'b'); - cache.get('/a'); // used=true (already true) - cache.get('/b'); // used=true (already true) + cache.get('/a'); + cache.get('/b'); cache.set('/c', 'c'); expect(cache.get('/a')).toBeUndefined(); expect(cache.get('/c')).toBe('c'); }); - it('should store and retrieve empty string key with null value', () => { + it('should store and retrieve an empty string key', () => { const cache = new RouterCache(5); - cache.set('', null); + cache.set('', 'root'); - expect(cache.get('')).toBeNull(); + expect(cache.get('')).toBe('root'); }); - // ── ST ── - it('should transition from empty to full to eviction overflow without error', () => { const cache = new RouterCache(2); - expect(cache.get('/x')).toBeUndefined(); // empty state - - cache.set('/a', 'a'); - cache.set('/b', 'b'); // full - cache.set('/c', 'c'); // overflow → eviction - - expect(cache.get('/c')).toBe('c'); - }); - - it('should reset hand, count, entries, and index after clear', () => { - const cache = new RouterCache(3); + expect(cache.get('/x')).toBeUndefined(); cache.set('/a', 'a'); cache.set('/b', 'b'); - cache.clear(); - - // After clear: new inserts should go to slot 0 again - cache.set('/new', 'new'); - - expect(cache.get('/new')).toBe('new'); - expect(cache.get('/a')).toBeUndefined(); + cache.set('/c', 'c'); + expect(cache.get('/c')).toBe('c'); }); it('should evict entry on second clock sweep when entry was given second chance', () => { - // clock-sweep: first encounter → used=true→false (second chance); second encounter → used=false→evict - // maxSize=2: insert /a(s0), /b(s1). evict for /c: - // h=0, /a.u=T→F; h=1, /b.u=T→F; wrap h=0, /a.u=F→evict. hand=1 const cache = new RouterCache(2); cache.set('/a', 'a'); cache.set('/b', 'b'); - cache.set('/c', 'c'); // /a evicted - + cache.set('/c', 'c'); expect(cache.get('/a')).toBeUndefined(); - expect(cache.get('/b')).toBe('b'); // /b survived + expect(cache.get('/b')).toBe('b'); }); it('should remove evicted key from index so same key can be re-inserted', () => { const cache = new RouterCache(1); cache.set('/a', 'a'); - cache.set('/b', 'b'); // evicts /a - - cache.set('/a', 're-a'); // /a re-inserted after eviction - + cache.set('/b', 'b'); + cache.set('/a', 're-a'); expect(cache.get('/a')).toBe('re-a'); }); it('should evict unreferenced entry while preserving recently-used entry (second chance)', () => { - // maxSize=4 (power of 2) to demonstrate real second-chance benefit: - // Fill 4 slots: /a(0), /b(1), /c(2), /d(3) - // Insert /e → evicts /a (hand=0, u=F→evict), hand=1 - // All others get used=false after eviction sweep - // Refresh /b: /b.used=true - // Insert /f → hand=1, /b.u=T→false, skip; hand=2, /c.u=F→evict /c const cache = new RouterCache(4); - cache.set('/a', 'a'); // slot 0 - cache.set('/b', 'b'); // slot 1 - cache.set('/c', 'c'); // slot 2 - cache.set('/d', 'd'); // slot 3 - cache.set('/e', 'e'); // triggers first eviction → evicts /a, hand=1 - - cache.get('/b'); // refresh /b: used=true - - cache.set('/f', 'f'); // second eviction: /b gets second chance; /c.u=F → evicted - - expect(cache.get('/c')).toBeUndefined(); // /c evicted (no second chance) - expect(cache.get('/b')).toBe('b'); // /b survived (had second chance) + cache.set('/a', 'a'); + cache.set('/b', 'b'); + cache.set('/c', 'c'); + cache.set('/d', 'd'); + cache.set('/e', 'e'); + cache.get('/b'); + cache.set('/f', 'f'); + expect(cache.get('/c')).toBeUndefined(); + expect(cache.get('/b')).toBe('b'); }); - // ── ID ── - it('should return same value on repeated get calls without modification', () => { const cache = new RouterCache(5); cache.set('/stable', 'value'); @@ -247,41 +178,24 @@ describe('RouterCache', () => { expect(cache.get('/stable')).toBe('value'); }); - it('should leave cache empty after multiple sequential clear calls', () => { - const cache = new RouterCache(5); - cache.set('/a', 'a'); - cache.clear(); - cache.clear(); - - expect(cache.get('/a')).toBeUndefined(); - }); - - // ── OR ── - it('should evict entries in insertion order when none have been recently accessed', () => { - // Both /a and /b start with used=true from insert. - // evict inserts in order: /a(slot0) first → /a evicted first. const cache = new RouterCache(2); - cache.set('/first', 'first'); // slot 0 - cache.set('/second', 'second'); // slot 1 - cache.set('/third', 'third'); // /first evicted (hand starts at 0) - + cache.set('/first', 'first'); + cache.set('/second', 'second'); + cache.set('/third', 'third'); expect(cache.get('/first')).toBeUndefined(); expect(cache.get('/second')).toBe('second'); expect(cache.get('/third')).toBe('third'); }); it('should evict the entry at the current hand position before entries inserted later', () => { - // After first eviction, hand=1. Next eviction starts at slot 1 (/second). const cache = new RouterCache(2); - cache.set('/a', 'a'); // slot 0 - cache.set('/b', 'b'); // slot 1 - cache.set('/c', 'c'); // evicts /a, hand ends at 1 - - // Now hand=1, /b.used=false; next evict starts at slot1 (/b.u=F→evict immediately) + cache.set('/a', 'a'); + cache.set('/b', 'b'); + cache.set('/c', 'c'); cache.set('/d', 'd'); - expect(cache.get('/b')).toBeUndefined(); // /b evicted next + expect(cache.get('/b')).toBeUndefined(); expect(cache.get('/c')).toBe('c'); expect(cache.get('/d')).toBe('d'); }); diff --git a/packages/router/src/cache.ts b/packages/router/src/cache.ts index ad918d2..9578060 100644 --- a/packages/router/src/cache.ts +++ b/packages/router/src/cache.ts @@ -1,25 +1,11 @@ interface CacheEntry { key: string; - value: T | null; + value: T; used: boolean; } -/** - * Round up to the next power of 2. - * Enables bitwise AND masking instead of modulo. - */ function nextPow2(n: number): number { - if (n <= 1) return 1; - - let v = n - 1; - - v |= v >>> 1; - v |= v >>> 2; - v |= v >>> 4; - v |= v >>> 8; - v |= v >>> 16; - - return v + 1; + return n <= 1 ? 1 : 2 ** Math.ceil(Math.log2(n)); } export class RouterCache { @@ -37,7 +23,7 @@ export class RouterCache { this.index = new Map(); } - get(key: string): T | null | undefined { + get(key: string): T | undefined { const idx = this.index.get(key); if (idx === undefined) { @@ -55,7 +41,7 @@ export class RouterCache { return entry.value; } - set(key: string, value: T | null): void { + set(key: string, value: T): void { const existing = this.index.get(key); if (existing !== undefined) { @@ -77,17 +63,17 @@ export class RouterCache { slot = this.evict(); } - this.entries[slot] = { key, value, used: true }; + const existingSlot = this.entries[slot]; + if (existingSlot !== undefined) { + existingSlot.key = key; + existingSlot.value = value; + existingSlot.used = true; + } else { + this.entries[slot] = { key, value, used: true }; + } this.index.set(key, slot); } - clear(): void { - this.entries.fill(undefined); - this.index.clear(); - this.hand = 0; - this.count = 0; - } - private evict(): number { while (true) { const entry = this.entries[this.hand]; diff --git a/packages/router/src/codegen/emitter.spec.ts b/packages/router/src/codegen/emitter.spec.ts new file mode 100644 index 0000000..c306d67 --- /dev/null +++ b/packages/router/src/codegen/emitter.spec.ts @@ -0,0 +1,307 @@ +import { describe, expect, it } from 'bun:test'; + +import type { MatchFn, MatchOutput, RouteParams } from '../types'; +import type { MatchCacheEntry, MatchConfig } from './emitter'; + +import { RouterCache } from '../cache'; +import { EMPTY_PARAMS, STATIC_META } from '../internal'; +import { createMatchState } from '../matcher/match-state'; +import { MatchSource } from '../types'; +import { compileMatchFn } from './emitter'; + +type Cfg = MatchConfig; + +function freezeOutput(value: T): MatchOutput { + return Object.freeze({ value, params: EMPTY_PARAMS, meta: STATIC_META }) as MatchOutput; +} + +function staticBucket(entries: Record): Record> { + const bucket: Record> = Object.create(null); + for (const [path, value] of Object.entries(entries)) { + bucket[path] = freezeOutput(value); + } + return bucket; +} + +function baseConfig(overrides: Partial> = {}): Cfg { + const merged = { + trimSlash: false, + lowerCase: false, + hasAnyTree: false, + hasAnyStatic: false, + staticOutputsByMethod: [], + methodCodes: Object.create(null) as Record, + activeMethodMask: new Int32Array(32), + staticByPath: Object.create(null), + rootFirstCharMaskByMethod: new Array(32).fill(null) as Array, + trees: [], + matchState: createMatchState(4), + handlers: [], + hitCacheByMethod: [], + activeMethodCodes: [], + terminalSlab: new Int32Array(0), + paramsFactories: [], + ...overrides, + } as Cfg; + if (overrides.activeMethodMask === undefined) { + const mask = new Int32Array(32); + for (let i = 0; i < merged.activeMethodCodes.length; i++) { + mask[merged.activeMethodCodes[i]![1]] = 1; + } + (merged as { activeMethodMask: Int32Array }).activeMethodMask = mask; + } + if (overrides.staticByPath === undefined && merged.staticOutputsByMethod.length > 0) { + const byPath: Record | undefined> }> = Object.create(null); + for (let mc = 0; mc < merged.staticOutputsByMethod.length; mc++) { + const bucket = merged.staticOutputsByMethod[mc]; + if (bucket === undefined) { + continue; + } + for (const path in bucket) { + let e = byPath[path]; + if (e === undefined) { + e = { mask: 0, outputs: [] }; + byPath[path] = e; + } + e.mask |= 1 << mc; + e.outputs[mc] = bucket[path]; + } + } + (merged as { staticByPath: typeof byPath }).staticByPath = byPath; + } + return merged; +} + +describe('compileMatchFn — static-only, single active method', () => { + it('returns the frozen MatchOutput on a direct static hit', () => { + const code = 0; + const methodCodes: Record = Object.create(null); + methodCodes['GET'] = code; + const bucket = staticBucket({ '/health': 'h' }); + const cfg = baseConfig({ + hasAnyStatic: true, + staticOutputsByMethod: [bucket], + methodCodes, + activeMethodCodes: [['GET', code] as const], + }); + const match = compileMatchFn(cfg); + const out = match('GET', '/health'); + expect(out).not.toBeNull(); + expect(out!.value).toBe('h'); + expect(out!.meta.source).toBe(MatchSource.Static); + }); + + it('returns null on the literal method-compare branch for a different method', () => { + const code = 0; + const methodCodes: Record = Object.create(null); + methodCodes['GET'] = code; + const cfg = baseConfig({ + hasAnyStatic: true, + staticOutputsByMethod: [staticBucket({ '/x': 'x' })], + methodCodes, + activeMethodCodes: [['GET', code] as const], + }); + expect(compileMatchFn(cfg)('POST', '/x')).toBeNull(); + }); + + it('falls back to a normalized-path probe on initial miss when trimSlash is on', () => { + const code = 0; + const methodCodes: Record = Object.create(null); + methodCodes['GET'] = code; + const cfg = baseConfig({ + trimSlash: true, + hasAnyStatic: true, + staticOutputsByMethod: [staticBucket({ '/x': 'x' })], + methodCodes, + activeMethodCodes: [['GET', code] as const], + }); + const match = compileMatchFn(cfg); + expect(match('GET', '/x/')!.value).toBe('x'); + expect(match('GET', '/x')!.value).toBe('x'); + }); +}); + +describe('compileMatchFn — static-only, multi-method', () => { + it('dispatches to the right bucket per method via methodCodes lookup', () => { + const methodCodes: Record = Object.create(null); + methodCodes['GET'] = 0; + methodCodes['POST'] = 1; + const cfg = baseConfig({ + hasAnyStatic: true, + staticOutputsByMethod: [staticBucket({ '/x': 'g' }), staticBucket({ '/x': 'p' })], + methodCodes, + activeMethodCodes: [['GET', 0] as const, ['POST', 1] as const], + }); + const match = compileMatchFn(cfg); + expect(match('GET', '/x')!.value).toBe('g'); + expect(match('POST', '/x')!.value).toBe('p'); + }); + + it('returns null for a method absent from methodCodes', () => { + const methodCodes: Record = Object.create(null); + methodCodes['GET'] = 0; + methodCodes['POST'] = 1; + const cfg = baseConfig({ + hasAnyStatic: true, + staticOutputsByMethod: [staticBucket({ '/x': 'g' }), staticBucket({ '/x': 'p' })], + methodCodes, + activeMethodCodes: [['GET', 0] as const, ['POST', 1] as const], + }); + expect(compileMatchFn(cfg)('DELETE', '/x')).toBeNull(); + }); +}); + +describe('compileMatchFn — mixed (dynamic walker + cache + slab unpack)', () => { + function dynamicCfg(opts: { trimSlash?: boolean; lowerCase?: boolean } = {}): Cfg { + const code = 0; + const methodCodes: Record = Object.create(null); + methodCodes['GET'] = code; + const matchState = createMatchState(4); + + const walker: MatchFn = (url, state) => { + const prefix = '/x/'; + if (!url.startsWith(prefix)) { + return false; + } + state.handlerIndex = 0; + state.paramOffsets[0] = prefix.length; + state.paramOffsets[1] = url.length; + state.paramCount = 1; + return true; + }; + + const slab = new Int32Array(3); + slab[0] = 0; + slab[1] = 0; + slab[2] = 0b1; + + const factory = (_mask: number, u: string, v: Int32Array): RouteParams => { + const p: Record = Object.create(null); + p['id'] = u.substring(v[0]!, v[1]!); + return p; + }; + + const activeMethodMask = new Int32Array(32); + activeMethodMask[code] = 1; + const rootFirstCharMaskByMethod = new Array(32).fill(null) as Array; + return { + trimSlash: opts.trimSlash ?? false, + lowerCase: opts.lowerCase ?? false, + hasAnyTree: true, + hasAnyStatic: false, + staticOutputsByMethod: [], + methodCodes, + activeMethodMask, + staticByPath: Object.create(null), + rootFirstCharMaskByMethod, + trees: [walker], + matchState, + handlers: ['user'], + hitCacheByMethod: [new RouterCache>(8)], + activeMethodCodes: [['GET', code] as const], + terminalSlab: slab, + paramsFactories: [factory], + }; + } + + it('returns a dynamic result with decoded params on first call', () => { + const match = compileMatchFn(dynamicCfg()); + const out = match('GET', '/x/42'); + expect(out).not.toBeNull(); + expect(out!.value).toBe('user'); + expect(out!.params.id).toBe('42'); + expect(out!.meta.source).toBe(MatchSource.Dynamic); + }); + + it('returns a cache hit on the second call with the same path', () => { + const match = compileMatchFn(dynamicCfg()); + expect(match('GET', '/x/42')!.meta.source).toBe(MatchSource.Dynamic); + expect(match('GET', '/x/42')!.meta.source).toBe(MatchSource.Cache); + }); + + it('applies trim-slash normalization before the walker dispatch', () => { + const match = compileMatchFn(dynamicCfg({ trimSlash: true })); + const out = match('GET', '/x/42/'); + expect(out).not.toBeNull(); + expect(out!.params.id).toBe('42'); + }); + + it('applies lowerCase normalization for matching but keeps the captured value original-case', () => { + const match = compileMatchFn(dynamicCfg({ lowerCase: true })); + const out = match('GET', '/X/AB'); + expect(out).not.toBeNull(); + expect(out!.params.id).toBe('AB'); + }); + + it('returns null when the walker rejects', () => { + const match = compileMatchFn(dynamicCfg()); + expect(match('GET', '/other/path')).toBeNull(); + }); +}); + +describe('compileMatchFn — trailing-slash recheck on strict (trimSlash off) mode', () => { + it('rejects a trailing-slash dynamic match when trimSlash is off and terminal is non-wildcard', () => { + const code = 0; + const methodCodes: Record = Object.create(null); + methodCodes['GET'] = code; + const state = createMatchState(4); + const walker: MatchFn = (url, s) => { + s.handlerIndex = 0; + s.paramOffsets[0] = 3; + s.paramOffsets[1] = url.length; + s.paramCount = 1; + return true; + }; + const slab = new Int32Array(3); + slab[0] = 0; + slab[1] = 0; + slab[2] = 0b1; + + const activeMethodMask = new Int32Array(32); + activeMethodMask[code] = 1; + const rootFirstCharMaskByMethod = new Array(32).fill(null) as Array; + const cfg: Cfg = { + trimSlash: false, + lowerCase: false, + hasAnyTree: true, + hasAnyStatic: false, + staticOutputsByMethod: [], + methodCodes, + activeMethodMask, + staticByPath: Object.create(null), + rootFirstCharMaskByMethod, + trees: [walker], + matchState: state, + handlers: ['h'], + hitCacheByMethod: [new RouterCache>(8)], + activeMethodCodes: [['GET', code] as const], + terminalSlab: slab, + paramsFactories: [ + (_m, u, v) => { + const p: Record = Object.create(null); + p['id'] = u.substring(v[0]!, v[1]!); + return p; + }, + ], + }; + + const match = compileMatchFn(cfg); + expect(match('GET', '/x/42/')).toBeNull(); + expect(match('GET', '/x/42')!.value).toBe('h'); + }); +}); + +describe('compileMatchFn — name + caching invariants', () => { + it('the compiled function is named `match`', () => { + const code = 0; + const methodCodes: Record = Object.create(null); + methodCodes['GET'] = code; + const cfg = baseConfig({ + hasAnyStatic: true, + staticOutputsByMethod: [staticBucket({ '/x': 'x' })], + methodCodes, + activeMethodCodes: [['GET', code] as const], + }); + expect(compileMatchFn(cfg).name).toBe('match'); + }); +}); diff --git a/packages/router/src/codegen/emitter.ts b/packages/router/src/codegen/emitter.ts new file mode 100644 index 0000000..4727ecb --- /dev/null +++ b/packages/router/src/codegen/emitter.ts @@ -0,0 +1,336 @@ +import type { RouterCache } from '../cache'; +import type { MatchFn, MatchOutput, MatchState, RouteParams } from '../types'; +import type { NormalizeCfg } from './path-normalize'; + +import { CACHE_META, DYNAMIC_META, EMPTY_PARAMS } from '../internal'; +import { emitLowerCase, emitTrailingSlashTrim } from './path-normalize'; +import { WARMUP_ITERATIONS } from './warmup'; + +interface MatchCacheEntry { + value: T; + params: RouteParams; +} + +interface MatchConfig { + readonly trimSlash: boolean; + readonly lowerCase: boolean; + readonly hasAnyTree: boolean; + readonly hasAnyStatic: boolean; + readonly staticOutputsByMethod: Array> | undefined>; + readonly methodCodes: Readonly>; + readonly activeMethodMask: Int32Array; + readonly staticByPath: Record | undefined> }>; + readonly rootFirstCharMaskByMethod: Array; + readonly trees: Array; + readonly matchState: MatchState; + readonly handlers: T[]; + readonly hitCacheByMethod: Array> | undefined>; + readonly activeMethodCodes: ReadonlyArray; + readonly terminalSlab: Int32Array; + readonly paramsFactories: Array<((presentBitmask: number, u: string, v: Int32Array) => RouteParams) | null>; +} + +type CompiledMatch = (method: string, path: string) => MatchOutput | null; + +function compileMatchFn(cfg: MatchConfig): CompiledMatch { + const singleMethod = cfg.activeMethodCodes.length === 1 ? cfg.activeMethodCodes[0]! : null; + + if (cfg.hasAnyStatic && !cfg.hasAnyTree && singleMethod !== null) { + return compileStaticOnlySingleMethod(cfg, singleMethod); + } + if (cfg.hasAnyStatic && !cfg.hasAnyTree) { + return compileStaticOnlyMultiMethod(cfg); + } + return compileMixed(cfg, singleMethod); +} + +type SingleMethodSpec = readonly [string, number]; + +function emitMethodDispatch( + singleMethod: SingleMethodSpec | null, + activeMethodCodes: ReadonlyArray | null, +): string { + if (singleMethod !== null) { + const [name, code] = singleMethod; + return `if (method !== ${JSON.stringify(name)}) return null;\nvar mc = ${code};`; + } + return `var mc; ${emitMethodCharSwitch(activeMethodCodes, 'mc = $CODE; break;', 'return null;')}`; +} + +function emitMethodCharSwitch( + activeMethodCodes: ReadonlyArray | null, + onHit: string, + onMiss: string, +): string { + const byFirst = new Map>(); + let lengthMask = 0; + if (activeMethodCodes !== null) { + for (const entry of activeMethodCodes) { + const c = entry[0].charCodeAt(0); + let bucket = byFirst.get(c); + if (bucket === undefined) { + bucket = []; + byFirst.set(c, bucket); + } + bucket.push(entry); + lengthMask |= 1 << entry[0].length; + } + } + let arms = ''; + for (const [c, bucket] of byFirst) { + let inner = ''; + for (const [name, code] of bucket) { + inner += `if (method === ${JSON.stringify(name)}) { ${onHit.replace('$CODE', String(code))} }\n`; + } + arms += `case ${c}: {\n${inner}${onMiss}\n}`; + } + const lenGate = lengthMask !== 0 ? `if ((${lengthMask} & (1 << method.length)) === 0) { ${onMiss} }\n` : ''; + return `${lenGate}switch (method.charCodeAt(0)) {\n${arms}default: ${onMiss}\n}`; +} + +function emitNormalize(cfg: NormalizeCfg, outVar: string): string { + const lines = [`var ${outVar} = path;`]; + const trim = emitTrailingSlashTrim(cfg, outVar); + if (trim !== '') { + lines.push(trim); + } + const lower = emitLowerCase(cfg, outVar); + // `${outVar}Raw` is the trimmed-but-not-lowercased path. It serves two roles: it is the + // source for extracting captured param/wildcard values (so case-insensitive matching + // never mutates a capture), and it is the hit-cache key (so two case-variant inputs that + // fold to the same matching string still get distinct cache entries with their own + // captures, instead of one returning the other's stale params). ASCII lowercasing + // preserves length/offsets, so the same paramOffsets index both strings. With no + // lowercasing it aliases the matching string. Trailing-slash trimming applies to both. + lines.push(`var ${outVar}Raw = ${outVar};`); + if (lower !== '') { + lines.push(lower); + } + return lines.join('\n'); +} + +function emitStaticBucketProbe(singleMethod: SingleMethodSpec | null, key: string, gateOnNormalize: boolean): string { + const open = gateOnNormalize ? `if (${key} !== path) {\n` : ''; + const close = gateOnNormalize ? `\n}` : ''; + if (singleMethod !== null) { + return ` + ${open}var out = activeBucket[${key}]; + if (out !== undefined) return out;${close}`; + } + return ` + ${open}var entry = staticByPath[${key}]; + if (entry !== undefined && (entry.mask & (1 << mc)) !== 0) { + return entry.outputs[mc]; + }${close}`; +} + +function emitPreNormalizeStaticProbe(singleMethod: SingleMethodSpec | null): string { + if (singleMethod !== null) { + return ` + var preOut = activeBucket[path]; + if (preOut !== undefined) return preOut;`; + } + return ` + var preEntry = staticByPath[path]; + if (preEntry !== undefined && (preEntry.mask & (1 << mc)) !== 0) { + return preEntry.outputs[mc]; + }`; +} + +function emitHitCacheProbe(): string { + return ` + var hc = hitCacheByMethod[mc]; + if (hc !== undefined) { + var cached = hc.get(spRaw); + if (cached !== undefined) { + return { + value: cached.value, + params: cached.params, + meta: CACHE_META, + }; + } + }`; +} + +function emitRootMaskGate(singleMethod: SingleMethodSpec | null): string { + return singleMethod !== null + ? `if (rootMaskSingle !== null && sp.length > 1 && rootMaskSingle[sp.charCodeAt(1)] === 0) return null;` + : `var rm = rootFirstCharMaskByMethod[mc]; if (rm !== null && sp.length > 1 && rm[sp.charCodeAt(1)] === 0) return null;`; +} + +function emitWalkerAndPack(cfg: MatchConfig, singleMethod: SingleMethodSpec | null): string { + const dispatch = + singleMethod !== null + ? `var ok = tr0(sp, matchState);` + : `var tr = trees[mc]; + if (!tr) return null; + var ok = tr(sp, matchState);`; + + const trimRecheck = cfg.trimSlash + ? '' + : ` + if (ok && sp.length > 1 && sp.charCodeAt(sp.length - 1) === 47 && terminalSlab[matchState.handlerIndex * 3 + 1] === 0) { + ok = false; + }`; + + return ` + ${dispatch} + + var tIdx = matchState.handlerIndex; + var slabBase = tIdx * 3;${trimRecheck} + + if (!ok) return null; + + var hIdx = terminalSlab[slabBase]; + var factory = paramsFactories[tIdx]; + var params = factory !== null + ? factory(terminalSlab[slabBase + 2], spRaw, matchState.paramOffsets) + : EMPTY_PARAMS; + + var val = handlers[hIdx]; + if (params !== EMPTY_PARAMS) Object.freeze(params); + hc.set(spRaw, { value: val, params: params }); + return { + value: val, + params: params, + meta: DYNAMIC_META, + };`; +} + +function compileStaticOnlySingleMethod(cfg: MatchConfig, singleMethod: SingleMethodSpec): CompiledMatch { + const body = [ + emitMethodDispatch(singleMethod, null), + ` + var out = activeBucket[path]; + if (out !== undefined) return out;`, + emitNormalize(cfg, 'sp'), + ` + if (sp !== path) { + out = activeBucket[sp]; + if (out !== undefined) return out; + } + return null;`, + ].join('\n'); + + const factory = new Function('activeBucket', `return function match(method, path) {\n${body}\n};`); + + const compiled = factory(cfg.staticOutputsByMethod[singleMethod[1]] ?? Object.create(null)) as CompiledMatch; + + runWarmup(compiled, cfg); + return compiled; +} + +function compileStaticOnlyMultiMethod(cfg: MatchConfig): CompiledMatch { + const body = [ + emitMethodDispatch(null, cfg.activeMethodCodes), + emitNormalize(cfg, 'sp'), + ` + var entry = staticByPath[sp]; + if (entry !== undefined && (entry.mask & (1 << mc)) !== 0) { + return entry.outputs[mc]; + } + return null;`, + ].join('\n'); + + const factory = new Function('staticByPath', `return function match(method, path) {\n${body}\n};`); + + const compiled = factory(cfg.staticByPath) as CompiledMatch; + runWarmup(compiled, cfg); + return compiled; +} + +function compileMixed(cfg: MatchConfig, singleMethod: SingleMethodSpec | null): CompiledMatch { + function emitBodyLines(specForBody: SingleMethodSpec | null): string[] { + const out: string[] = []; + if (cfg.hasAnyStatic && cfg.hasAnyTree) { + out.push(emitPreNormalizeStaticProbe(specForBody)); + } + out.push(emitNormalize(cfg, 'sp')); + if (cfg.hasAnyStatic) { + out.push(emitStaticBucketProbe(specForBody, 'sp', true)); + } + if (cfg.hasAnyTree) { + out.push(emitRootMaskGate(specForBody)); + } + out.push(emitHitCacheProbe()); + out.push(cfg.hasAnyTree ? emitWalkerAndPack(cfg, specForBody) : 'return null;'); + return out; + } + + const activeBucket = + singleMethod !== null ? (cfg.staticOutputsByMethod[singleMethod[1]] ?? Object.create(null)) : Object.create(null); + const tr0 = singleMethod !== null ? (cfg.trees[singleMethod[1]] ?? null) : null; + const rootMaskSingle = singleMethod !== null ? (cfg.rootFirstCharMaskByMethod[singleMethod[1]] ?? null) : null; + + let source: string; + if (singleMethod !== null) { + const body = [emitMethodDispatch(singleMethod, cfg.activeMethodCodes), ...emitBodyLines(singleMethod)].join('\n'); + source = `return function match(method, path) {\n${body}\n};`; + } else { + const activeBody = emitBodyLines(null).join('\n'); + const tableInit = cfg.activeMethodCodes.map(([name, code]) => `mcByMethod[${JSON.stringify(name)}] = ${code};`).join('\n'); + source = ` + function matchActive(mc, path) { + ${activeBody} + } + var mcByMethod = Object.create(null); + ${tableInit} + return function match(method, path) { + var mc = mcByMethod[method]; + return mc === undefined ? null : matchActive(mc, path); + }; + `; + } + + const factory = new Function( + 'activeBucket', + 'tr0', + 'rootMaskSingle', + 'staticByPath', + 'rootFirstCharMaskByMethod', + 'trees', + 'matchState', + 'handlers', + 'hitCacheByMethod', + 'EMPTY_PARAMS', + 'CACHE_META', + 'DYNAMIC_META', + 'terminalSlab', + 'paramsFactories', + source, + ); + + const compiled = factory( + activeBucket, + tr0, + rootMaskSingle, + cfg.staticByPath, + cfg.rootFirstCharMaskByMethod, + cfg.trees, + cfg.matchState, + cfg.handlers, + cfg.hitCacheByMethod, + EMPTY_PARAMS, + CACHE_META, + DYNAMIC_META, + cfg.terminalSlab, + cfg.paramsFactories, + ) as CompiledMatch; + + runWarmup(compiled, cfg); + return compiled; +} + +function runWarmup(compiled: CompiledMatch, cfg: MatchConfig): void { + const warmPaths = ['/__zipbul_warmup__', '/__zipbul_warmup__/sub']; + for (let it = 0; it < WARMUP_ITERATIONS; it++) { + for (const [methodName] of cfg.activeMethodCodes) { + for (const p of warmPaths) { + compiled(methodName, p); + } + } + } +} + +export { compileMatchFn }; +export type { MatchCacheEntry, MatchConfig }; diff --git a/packages/router/src/codegen/index.ts b/packages/router/src/codegen/index.ts new file mode 100644 index 0000000..2e958da --- /dev/null +++ b/packages/router/src/codegen/index.ts @@ -0,0 +1,13 @@ +export type { MatchCacheEntry, MatchConfig } from './emitter'; +export { compileMatchFn } from './emitter'; + +export type { PathNormalizer } from './path-normalize'; +export { buildPathNormalizer } from './path-normalize'; + +export { collectWarmupPaths, compileSegmentTree } from './segment-compile'; + +export type { FactoryCache } from './super-factory'; +export { createFactoryCache, getOrCreateSuperFactory, computePresentBitmask } from './super-factory'; + +export { WARMUP_ITERATIONS } from './warmup'; +export { tryCodegenStaticPrefixWildcard } from './wildcard-prefix-codegen'; diff --git a/packages/router/src/codegen/path-normalize.spec.ts b/packages/router/src/codegen/path-normalize.spec.ts new file mode 100644 index 0000000..6b6939e --- /dev/null +++ b/packages/router/src/codegen/path-normalize.spec.ts @@ -0,0 +1,65 @@ +import { describe, expect, it } from 'bun:test'; + +import { buildPathNormalizer, emitLowerCase, emitTrailingSlashTrim } from './path-normalize'; + +describe('emitTrailingSlashTrim', () => { + it('returns empty string when trimSlash is off', () => { + expect(emitTrailingSlashTrim({ trimSlash: false, lowerCase: false }, 'sp')).toBe(''); + }); + + it('emits a length-guarded trailing-slash trim against the supplied var', () => { + const out = emitTrailingSlashTrim({ trimSlash: true, lowerCase: false }, 'sp'); + expect(out).toContain('sp.length > 1'); + expect(out).toContain('charCodeAt(sp.length - 1) === 47'); + expect(out).toContain('sp.substring(0, sp.length - 1)'); + }); +}); + +describe('emitLowerCase', () => { + it('returns empty string when lowerCase is off', () => { + expect(emitLowerCase({ trimSlash: false, lowerCase: false }, 'sp')).toBe(''); + }); + + it('emits a guarded ASCII-only fold against the supplied var (not String.toLowerCase)', () => { + const code = emitLowerCase({ trimSlash: false, lowerCase: true }, 'sp'); + expect(code).toContain('/[A-Z]/'); + expect(code).toContain('sp = sp.replace('); + expect(code).not.toContain('toLowerCase'); + }); +}); + +describe('buildPathNormalizer', () => { + it('passes the path through unchanged when both flags are off', () => { + const norm = buildPathNormalizer({ trimSlash: false, lowerCase: false }); + expect(norm('/Health/')).toBe('/Health/'); + }); + + it('trims a single trailing slash when trimSlash is on', () => { + const norm = buildPathNormalizer({ trimSlash: true, lowerCase: false }); + expect(norm('/health/')).toBe('/health'); + expect(norm('/health')).toBe('/health'); + }); + + it('keeps the root slash even with trimSlash on (length > 1 guard)', () => { + const norm = buildPathNormalizer({ trimSlash: true, lowerCase: false }); + expect(norm('/')).toBe('/'); + }); + + it('lowercases the path when lowerCase is on', () => { + const norm = buildPathNormalizer({ trimSlash: false, lowerCase: true }); + expect(norm('/Health')).toBe('/health'); + expect(norm('/HEALTH/USERS')).toBe('/health/users'); + }); + + it('applies trim and lowerCase together (trim happens before lower)', () => { + const norm = buildPathNormalizer({ trimSlash: true, lowerCase: true }); + expect(norm('/Health/')).toBe('/health'); + }); + + it('folds ASCII only, leaving non-ASCII untouched and length unchanged', () => { + const norm = buildPathNormalizer({ trimSlash: false, lowerCase: true }); + // `İ`.toLowerCase() is length-changing (2 code units); ASCII fold must leave it intact. + expect(norm('/İ/X')).toBe('/İ/x'); + expect(norm('/İ/X')).toHaveLength('/İ/X'.length); + }); +}); diff --git a/packages/router/src/codegen/path-normalize.ts b/packages/router/src/codegen/path-normalize.ts new file mode 100644 index 0000000..262a9b4 --- /dev/null +++ b/packages/router/src/codegen/path-normalize.ts @@ -0,0 +1,32 @@ +export interface NormalizeCfg { + trimSlash: boolean; + lowerCase: boolean; +} + +export type PathNormalizer = (path: string) => string; + +export function emitTrailingSlashTrim(cfg: NormalizeCfg, outVar: string): string { + if (!cfg.trimSlash) { + return ''; + } + return `if (${outVar}.length > 1 && ${outVar}.charCodeAt(${outVar}.length - 1) === 47) ${outVar} = ${outVar}.substring(0, ${outVar}.length - 1);`; +} + +export function emitLowerCase(cfg: NormalizeCfg, outVar: string): string { + if (!cfg.lowerCase) { + return ''; + } + // ASCII-only, length-preserving case fold. URL paths are ASCII (RFC 3986; non-ASCII + // arrives percent-encoded per RFC 3987), so folding A-Z is correct and complete, and + // — unlike `String.toLowerCase()`, which can change length (e.g. `İ` → 2 code units) — + // it keeps capture offsets valid. The `test` gate skips the allocation when no A-Z. + return `if (/[A-Z]/.test(${outVar})) ${outVar} = ${outVar}.replace(/[A-Z]/g, function (_c) { return String.fromCharCode(_c.charCodeAt(0) + 32); });`; +} + +export function buildPathNormalizer(cfg: NormalizeCfg): PathNormalizer { + const body = ['var sp = path;', emitTrailingSlashTrim(cfg, 'sp'), emitLowerCase(cfg, 'sp'), 'return sp;'] + .filter(Boolean) + .join('\n'); + + return new Function('path', body) as PathNormalizer; +} diff --git a/packages/router/src/codegen/segment-compile.spec.ts b/packages/router/src/codegen/segment-compile.spec.ts new file mode 100644 index 0000000..206dc76 --- /dev/null +++ b/packages/router/src/codegen/segment-compile.spec.ts @@ -0,0 +1,103 @@ +import { describe, expect, it } from 'bun:test'; + +import type { SegmentNode } from '../tree'; + +import { WildcardOrigin, createSegmentNode } from '../tree'; +import { + emitMultiWildcardTerminal, + emitRootSlashTerminal, + emitStrictTerminal, + emitTesterCheck, + emitWildcardStore, +} from './segment-compile'; + +describe('emitTesterCheck', () => { + it('returns an empty string when there is no tester (testerIdx === -1)', () => { + expect(emitTesterCheck(-1, 'pos0', 's0')).toBe(''); + }); + + it('emits a `testers[i](decoder(...)) !== TESTER_PASS` guard when a tester is present', () => { + const out = emitTesterCheck(3, 'pos0', 's0'); + expect(out).toContain('testers[3]'); + expect(out).toContain('decoder(url.substring(pos0, s0 === -1 ? len : s0))'); + expect(out).toContain('TESTER_PASS'); + expect(out).toContain('return false'); + }); +}); + +const emptyCtx = () => ({ bail: false, testers: [], pendingParams: [] }); + +describe('emitStrictTerminal', () => { + it('emits the end-of-URL strict terminal block with the supplied store index', () => { + const out = emitStrictTerminal(emptyCtx(), 'pos0', 's0', '', 7); + expect(out).toContain('s0 === -1 && pos0 < len'); + expect(out).toContain('state.handlerIndex = 7'); + expect(out).toContain('return true'); + }); + + it('inlines the tester-check fragment into the strict-terminal body', () => { + const tester = emitTesterCheck(2, 'pos0', 's0'); + const out = emitStrictTerminal(emptyCtx(), 'pos0', 's0', tester, 5); + expect(out).toContain('testers[2]'); + expect(out).toContain('state.handlerIndex = 5'); + }); +}); + +describe('emitMultiWildcardTerminal', () => { + it('emits two paramOffsets writes for the leading param + multi tail', () => { + const out = emitMultiWildcardTerminal(emptyCtx(), 'pos0', 's0', '', 11); + expect(out).toContain('state.paramOffsets[0] = pos0'); + expect(out).toContain('state.paramOffsets[1] = s0'); + expect(out).toContain('state.paramOffsets[2] = s0 + 1'); + expect(out).toContain('state.paramOffsets[3] = len'); + expect(out).toContain('state.paramCount = 2'); + expect(out).toContain('state.handlerIndex = 11'); + }); + + it('requires a non-empty tail (`s0 + 1 < len`) before matching', () => { + const out = emitMultiWildcardTerminal(emptyCtx(), 'pos0', 's0', '', 11); + expect(out).toContain('s0 + 1 < len'); + }); +}); + +describe('emitWildcardStore', () => { + it('emits the inclusive `<= len` guard for star-origin wildcards', () => { + const node: SegmentNode = { ...createSegmentNode(), wildcardStore: 4, wildcardOrigin: WildcardOrigin.Star }; + const out = emitWildcardStore(emptyCtx(), node, 'pos0'); + expect(out).toContain('pos0 <= len'); + expect(out).toContain('state.handlerIndex = 4'); + }); + + it('emits the exclusive `< len` guard for multi-origin wildcards', () => { + const node: SegmentNode = { ...createSegmentNode(), wildcardStore: 8, wildcardOrigin: WildcardOrigin.Multi }; + const out = emitWildcardStore(emptyCtx(), node, 'pos0'); + expect(out).toContain('pos0 < len'); + expect(out).not.toContain('pos0 <= len'); + }); +}); + +describe('emitRootSlashTerminal', () => { + it('emits a store assignment when root carries a store', () => { + const root = createSegmentNode(); + root.store = 12; + const out = emitRootSlashTerminal(root); + expect(out).toContain('state.handlerIndex = 12'); + expect(out).toContain('return true'); + }); + + it('emits a star-wildcard capture when root has only a wildcard star', () => { + const root = createSegmentNode(); + root.wildcardStore = 9; + root.wildcardOrigin = WildcardOrigin.Star; + const out = emitRootSlashTerminal(root); + expect(out).toContain('state.paramOffsets[0] = 1'); + expect(out).toContain('state.paramOffsets[1] = 1'); + expect(out).toContain('state.paramCount = 1'); + expect(out).toContain('state.handlerIndex = 9'); + }); + + it('emits `return false` when root has neither store nor a star wildcard', () => { + const root = createSegmentNode(); + expect(emitRootSlashTerminal(root)).toContain('return false'); + }); +}); diff --git a/packages/router/src/codegen/segment-compile.ts b/packages/router/src/codegen/segment-compile.ts new file mode 100644 index 0000000..5c0ba2d --- /dev/null +++ b/packages/router/src/codegen/segment-compile.ts @@ -0,0 +1,433 @@ +import type { PatternTesterFn, SegmentNode } from '../tree'; +import type { DecoderFn, MatchFn } from '../types'; + +import { TESTER_PASS, WildcardOrigin, forEachStaticChild, hasAmbiguousNode, hasAnyStaticChild } from '../tree'; + +const MAX_SOURCE_BYTES_HARD = 128 * 1024; +const MAX_NODES_DEFAULT = 256; + +interface CodegenEstimate { + nodes: number; + oversized: boolean; +} + +function estimateSegmentTreeCodegen(root: SegmentNode, nodeCap: number): CodegenEstimate { + let nodes = 0; + const stack: SegmentNode[] = [root]; + + while (stack.length > 0) { + if (nodes > nodeCap) { + return { nodes, oversized: true }; + } + const node = stack.pop()!; + nodes++; + forEachStaticChild(node, (_, child) => { + stack.push(child); + }); + let p = node.paramChild; + while (p !== null) { + stack.push(p.next); + p = p.nextSibling; + } + } + + return { nodes, oversized: false }; +} + +function collectWarmupPaths(root: SegmentNode): string[] { + const out: string[] = []; + + const firstStaticChild = (n: SegmentNode): { key: string; child: SegmentNode } | null => { + if (n.singleChildKey !== null && n.singleChildNext !== null) { + return { key: n.singleChildKey, child: n.singleChildNext }; + } + if (n.staticChildren !== null) { + for (const seg in n.staticChildren) { + return { key: seg, child: n.staticChildren[seg]! }; + } + } + return null; + }; + + const synthForNode = (node: SegmentNode, prefix: string): string => { + let path = prefix; + let n: SegmentNode | null = node; + let guard = 0; + while (n !== null && guard++ < 16) { + const first = firstStaticChild(n); + if (first !== null) { + path += '/' + first.key; + n = first.child; + continue; + } + if (n.paramChild !== null) { + path += '/__warm__'; + n = n.paramChild.next; + continue; + } + if (n.wildcardStore !== null) { + path += '/__warm__/__warm__'; + n = null; + continue; + } + break; + } + return path; + }; + + forEachStaticChild(root, (seg, child) => { + out.push(synthForNode(child, '/' + seg)); + }); + if (root.paramChild !== null) { + out.push(synthForNode(root.paramChild.next, '/__warm__')); + } + if (root.wildcardStore !== null) { + out.push('/__warm__/__warm__'); + } + + if (out.length === 0) { + out.push('/__zipbul_warmup__'); + } + return out; +} + +interface CompiledPackage { + factory: (testers: PatternTesterFn[], pass: typeof TESTER_PASS, decoder: DecoderFn) => MatchFn; + testers: PatternTesterFn[]; +} + +function compileSegmentTree(root: SegmentNode): CompiledPackage | null { + if (hasAmbiguousNode(root)) { + return null; + } + + if (estimateSegmentTreeCodegen(root, MAX_NODES_DEFAULT).oversized) { + return null; + } + + const ctx: EmitContext = { bail: false, testers: [], pendingParams: [] }; + const body = emitNode(ctx, root, 'pos0'); + if (ctx.bail) { + return null; + } + + const source = ` +'use strict'; +return function compiledSegmentWalk(url, state) { + var len = url.length; + if (len < 2 || url.charCodeAt(0) !== 47) { + if (len === 1 && url.charCodeAt(0) === 47) { +${emitRootSlashTerminal(root)} + } + return false; + } + var pos0 = 1; + state.paramCount = 0; +${body} + return false; +};`; + + if (source.length > MAX_SOURCE_BYTES_HARD) { + return null; + } + + try { + const factory = new Function('testers', 'TESTER_PASS', 'decoder', source) as CompiledPackage['factory']; + return { factory, testers: ctx.testers }; + } catch { + return null; + } +} + +interface EmitContext { + bail: boolean; + testers: PatternTesterFn[]; + pendingParams: Array; +} + +function emitFlushPendingWrites( + pending: ReadonlyArray, + extra: ReadonlyArray = [], +): string { + let s = ''; + let i = 0; + for (const [start, end] of pending) { + s += `state.paramOffsets[${i * 2}] = ${start};\n`; + s += `state.paramOffsets[${i * 2 + 1}] = ${end};\n`; + i++; + } + for (const [start, end] of extra) { + s += `state.paramOffsets[${i * 2}] = ${start};\n`; + s += `state.paramOffsets[${i * 2 + 1}] = ${end};\n`; + i++; + } + s += `state.paramCount = ${i};\n`; + return s; +} + +function emitRootSlashTerminal(root: SegmentNode): string { + if (root.store !== null) { + return ` state.handlerIndex = ${root.store};\n return true;`; + } + + if (root.wildcardStore !== null && root.wildcardOrigin === WildcardOrigin.Star) { + return ` state.paramOffsets[0] = 1;\n state.paramOffsets[1] = 1;\n state.paramCount = 1;\n state.handlerIndex = ${root.wildcardStore};\n return true;`; + } + + return ' return false;'; +} + +function emitNode(ctx: EmitContext, node: SegmentNode, posVar: string): string { + const posDigits = posVar.slice(3).split('_')[0]!; + const slashVar = `s${posDigits}`; + const innerPos = `pos${parseInt(posDigits) + 1}`; + + let code = emitStaticChildren(ctx, node, posVar, innerPos); + if (ctx.bail) { + return ''; + } + + if (node.paramChild !== null) { + code += emitParamBranch(ctx, node.paramChild, posVar, slashVar, innerPos); + if (ctx.bail) { + return ''; + } + } + + if (node.wildcardStore !== null) { + code += emitWildcardStore(ctx, node, posVar); + } + + return code; +} + +const STATIC_CHILD_DISPATCH_THRESHOLD = 4; + +function emitStaticChildren(ctx: EmitContext, node: SegmentNode, posVar: string, innerPos: string): string { + const siblings: Array<{ seg: string; child: SegmentNode }> = []; + forEachStaticChild(node, (seg, child) => { + siblings.push({ seg, child }); + }); + if (siblings.length === 0) { + return ''; + } + + if (siblings.length >= STATIC_CHILD_DISPATCH_THRESHOLD) { + return emitStaticChildrenSwitch(ctx, siblings, posVar, innerPos); + } + + let code = ''; + for (const { seg, child } of siblings) { + if (ctx.bail) { + return ''; + } + code += emitStaticChildBlock(ctx, seg, child, posVar, innerPos); + if (ctx.bail) { + return ''; + } + } + return code; +} + +function emitStaticChildrenSwitch( + ctx: EmitContext, + siblings: ReadonlyArray<{ seg: string; child: SegmentNode }>, + posVar: string, + innerPos: string, +): string { + const byFirstChar = new Map>(); + for (const s of siblings) { + const code = s.seg.charCodeAt(0); + let bucket = byFirstChar.get(code); + if (bucket === undefined) { + bucket = []; + byFirstChar.set(code, bucket); + } + bucket.push(s); + } + + let body = ''; + for (const [charCode, bucket] of byFirstChar) { + let inner = ''; + for (const { seg, child } of bucket) { + inner += emitStaticChildBlock(ctx, seg, child, posVar, innerPos); + if (ctx.bail) { + return ''; + } + } + body += ` + case ${charCode}: {${inner} + break; + }`; + } + + return ` + switch (url.charCodeAt(${posVar})) {${body} + }`; +} + +function emitStaticChildBlock(ctx: EmitContext, seg: string, child: SegmentNode, posVar: string, innerPos: string): string { + const segLen = seg.length; + const nextPos = `${innerPos}_s${seg.replace(/[^a-z0-9]/gi, '_')}`; + const childInner = emitNode(ctx, child, nextPos); + if (ctx.bail) { + return ''; + } + return ` + if (url.startsWith(${JSON.stringify(seg)}, ${posVar})) { + var c = url.charCodeAt(${posVar} + ${segLen}); + if (c === 47) { // '/' + var ${nextPos} = ${posVar} + ${segLen} + 1; +${childInner} + } else if (c !== c) { // NaN — past end-of-string → terminal +${emitTerminalAt(ctx, child)} + } + }`; +} + +function emitParamBranch( + ctx: EmitContext, + param: NonNullable, + posVar: string, + slashVar: string, + innerPos: string, +): string { + if (param.nextSibling !== null) { + ctx.bail = true; + return ''; + } + + const next = param.next; + const nextHasNoStatic = !hasAnyStaticChild(next); + const strictTerminal = nextHasNoStatic && next.paramChild === null && next.wildcardStore === null && next.store !== null; + const wildcardTerminal = nextHasNoStatic && next.paramChild === null && next.wildcardStore !== null; + const testerIdx = param.tester !== null ? ctx.testers.push(param.tester) - 1 : -1; + + let code = ` + var ${slashVar} = ${posVar}; + while (${slashVar} < len && url.charCodeAt(${slashVar}) !== 47) ${slashVar}++; + if (${slashVar} === len) ${slashVar} = -1;`; + + const testerCheck = emitTesterCheck(testerIdx, posVar, slashVar); + + if (strictTerminal) { + code += emitStrictTerminal(ctx, posVar, slashVar, testerCheck, next.store!); + return code; + } + if (wildcardTerminal && next.wildcardOrigin === WildcardOrigin.Multi) { + code += emitMultiWildcardTerminal(ctx, posVar, slashVar, testerCheck, next.wildcardStore!); + return code; + } + + ctx.pendingParams.push([posVar, slashVar] as const); + const inner = emitNode(ctx, next, innerPos); + ctx.pendingParams.pop(); + if (ctx.bail) { + return ''; + } + + code += ` + if (${slashVar} !== -1 && ${slashVar} > ${posVar}) { + ${testerCheck} + var ${innerPos} = ${slashVar} + 1; +${inner} + }`; + + if (next.store !== null) { + code += emitStrictTerminal(ctx, posVar, slashVar, testerCheck, next.store); + } + if (next.wildcardStore !== null && next.wildcardOrigin === WildcardOrigin.Star) { + code += emitStarWildcardEmptyTail(ctx, posVar, slashVar, testerCheck, next.wildcardStore); + } + return code; +} + +function emitStarWildcardEmptyTail( + ctx: EmitContext, + posVar: string, + slashVar: string, + testerCheck: string, + wildcardStoreIdx: number, +): string { + const flush = emitFlushPendingWrites(ctx.pendingParams, [ + [posVar, 'len'], + ['len', 'len'], + ]); + return ` + if (${slashVar} === -1 && ${posVar} < len) { + ${testerCheck} + ${flush}state.handlerIndex = ${wildcardStoreIdx}; + return true; + }`; +} + +function emitTesterCheck(testerIdx: number, posVar: string, slashVar: string): string { + if (testerIdx === -1) { + return ''; + } + return ` + if (testers[${testerIdx}](decoder(url.substring(${posVar}, ${slashVar} === -1 ? len : ${slashVar}))) !== TESTER_PASS) return false;`; +} + +function emitStrictTerminal(ctx: EmitContext, posVar: string, slashVar: string, testerCheck: string, storeIdx: number): string { + const flush = emitFlushPendingWrites(ctx.pendingParams, [[posVar, 'len']]); + return ` + if (${slashVar} === -1 && ${posVar} < len) { + ${testerCheck} + ${flush}state.handlerIndex = ${storeIdx}; + return true; + }`; +} + +function emitMultiWildcardTerminal( + ctx: EmitContext, + posVar: string, + slashVar: string, + testerCheck: string, + wildcardStoreIdx: number, +): string { + const flush = emitFlushPendingWrites(ctx.pendingParams, [ + [posVar, slashVar], + [`${slashVar} + 1`, 'len'], + ]); + return ` + if (${slashVar} !== -1 && ${slashVar} > ${posVar} && ${slashVar} + 1 < len) { + ${testerCheck} + ${flush}state.handlerIndex = ${wildcardStoreIdx}; + return true; + }`; +} + +function emitWildcardStore(ctx: EmitContext, node: SegmentNode, posVar: string): string { + const guard = node.wildcardOrigin === WildcardOrigin.Star ? `${posVar} <= len` : `${posVar} < len`; + const flush = emitFlushPendingWrites(ctx.pendingParams, [[posVar, 'len']]); + return ` + if (${guard}) { + ${flush}state.handlerIndex = ${node.wildcardStore}; + return true; + }`; +} + +function emitTerminalAt(ctx: EmitContext, node: SegmentNode): string { + if (node.store !== null) { + const flush = emitFlushPendingWrites(ctx.pendingParams); + return ` ${flush}state.handlerIndex = ${node.store};\n return true;`; + } + + if (node.wildcardStore !== null && node.wildcardOrigin === WildcardOrigin.Star) { + const flush = emitFlushPendingWrites(ctx.pendingParams, [['url.length', 'url.length']]); + return ` ${flush}state.handlerIndex = ${node.wildcardStore};\n return true;`; + } + + return ''; +} + +export { + collectWarmupPaths, + compileSegmentTree, + emitMultiWildcardTerminal, + emitRootSlashTerminal, + emitStrictTerminal, + emitTesterCheck, + emitWildcardStore, +}; diff --git a/packages/router/src/codegen/super-factory.spec.ts b/packages/router/src/codegen/super-factory.spec.ts new file mode 100644 index 0000000..5fbdf0b --- /dev/null +++ b/packages/router/src/codegen/super-factory.spec.ts @@ -0,0 +1,112 @@ +import { describe, expect, it } from 'bun:test'; + +import { PathPartType } from '../tree'; +import { computePresentBitmask, createFactoryCache, getOrCreateSuperFactory } from './super-factory'; + +const identityDecoder = (s: string) => s; + +function offsetsFromCaptures(captures: Array): Int32Array { + const v = new Int32Array(captures.length * 2); + for (let i = 0; i < captures.length; i++) { + v[i * 2] = captures[i]![0]; + v[i * 2 + 1] = captures[i]![1]; + } + return v; +} + +describe('createFactoryCache', () => { + it('returns a fresh empty Map', () => { + const cache = createFactoryCache(); + expect(cache.size).toBe(0); + }); +}); + +describe('getOrCreateSuperFactory', () => { + it('produces a factory that assigns each present name to the decoded slice', () => { + const cache = createFactoryCache(); + const fn = getOrCreateSuperFactory(cache, ['id', 'kind'], [PathPartType.Param, PathPartType.Param], true, identityDecoder); + const url = '/users/42/admin'; + const v = offsetsFromCaptures([ + [7, 9], + [10, 15], + ]); + const params = fn(0b11, url, v); + expect(params.id).toBe('42'); + expect(params.kind).toBe('admin'); + }); + + it('skips absent names entirely when omitBehavior=true', () => { + const cache = createFactoryCache(); + const fn = getOrCreateSuperFactory(cache, ['id', 'tail'], [PathPartType.Param, PathPartType.Param], true, identityDecoder); + const url = '/users/42'; + const v = offsetsFromCaptures([[7, 9]]); + const params = fn(0b01, url, v); + expect(params.id).toBe('42'); + expect('tail' in params).toBe(false); + }); + + it('writes undefined for absent names when omitBehavior=false', () => { + const cache = createFactoryCache(); + const fn = getOrCreateSuperFactory(cache, ['id', 'tail'], [PathPartType.Param, PathPartType.Param], false, identityDecoder); + const url = '/users/42'; + const v = offsetsFromCaptures([[7, 9]]); + const params = fn(0b01, url, v); + expect(params.id).toBe('42'); + expect('tail' in params).toBe(true); + expect(params.tail).toBeUndefined(); + }); + + it('does NOT decode wildcard slices (origin: wildcard skips decoder)', () => { + const cache = createFactoryCache(); + const fn = getOrCreateSuperFactory(cache, ['rest'], [PathPartType.Wildcard], true, () => 'should-not-be-called'); + const url = '/files/raw%20tail'; + const v = offsetsFromCaptures([[7, 17]]); + const params = fn(0b1, url, v); + expect(params.rest).toBe('raw%20tail'); + }); + + it('returns the cached factory on a second call with the same shape', () => { + const cache = createFactoryCache(); + const a = getOrCreateSuperFactory(cache, ['id'], [PathPartType.Param], true, identityDecoder); + const b = getOrCreateSuperFactory(cache, ['id'], [PathPartType.Param], true, identityDecoder); + expect(a).toBe(b); + expect(cache.size).toBe(1); + }); + + it('caches separately for omit vs set-undefined behavior', () => { + const cache = createFactoryCache(); + const omit = getOrCreateSuperFactory(cache, ['id'], [PathPartType.Param], true, identityDecoder); + const setUndef = getOrCreateSuperFactory(cache, ['id'], [PathPartType.Param], false, identityDecoder); + expect(omit).not.toBe(setUndef); + expect(cache.size).toBe(2); + }); + + it('caches separately for param vs wildcard at the same name', () => { + const cache = createFactoryCache(); + const asParam = getOrCreateSuperFactory(cache, ['x'], [PathPartType.Param], true, identityDecoder); + const asWild = getOrCreateSuperFactory(cache, ['x'], [PathPartType.Wildcard], true, identityDecoder); + expect(asParam).not.toBe(asWild); + expect(cache.size).toBe(2); + }); +}); + +describe('computePresentBitmask', () => { + it('returns 0 when no names are present', () => { + expect(computePresentBitmask(['a', 'b', 'c'], [])).toBe(0); + }); + + it('sets the bit at the matching originalNames index for each present entry', () => { + expect(computePresentBitmask(['a', 'b', 'c'], [{ name: 'a' }])).toBe(0b001); + expect(computePresentBitmask(['a', 'b', 'c'], [{ name: 'b' }])).toBe(0b010); + expect(computePresentBitmask(['a', 'b', 'c'], [{ name: 'c' }])).toBe(0b100); + }); + + it('combines bits for multiple present entries (order in present[] does not matter)', () => { + expect(computePresentBitmask(['a', 'b', 'c'], [{ name: 'a' }, { name: 'c' }])).toBe(0b101); + expect(computePresentBitmask(['a', 'b', 'c'], [{ name: 'c' }, { name: 'a' }])).toBe(0b101); + }); + + it('ignores present names that are not in originalNames', () => { + expect(computePresentBitmask(['a'], [{ name: 'b' }])).toBe(0); + }); +}); diff --git a/packages/router/src/codegen/super-factory.ts b/packages/router/src/codegen/super-factory.ts new file mode 100644 index 0000000..0fd9c21 --- /dev/null +++ b/packages/router/src/codegen/super-factory.ts @@ -0,0 +1,64 @@ +import type { RouteParams } from '../types'; + +import { NullProtoObj } from '../internal'; +import { PathPartType } from '../tree'; + +export type SuperFactoryFn = (presentBitmask: number, u: string, v: Int32Array) => RouteParams; + +export type FactoryCache = Map; + +export function createFactoryCache(): FactoryCache { + return new Map(); +} + +export function getOrCreateSuperFactory( + cache: FactoryCache, + originalNames: ReadonlyArray, + originalTypes: ReadonlyArray, + omitBehavior: boolean, + decoder: (s: string) => string, +): SuperFactoryFn { + let cacheKey = omitBehavior ? 'O:' : 'S:'; + for (let n = 0; n < originalNames.length; n++) { + if (n > 0) { + cacheKey += ','; + } + cacheKey += originalNames[n]!; + cacheKey += originalTypes[n] === PathPartType.Wildcard ? '#w' : '#p'; + } + const cached = cache.get(cacheKey); + if (cached !== undefined) { + return cached; + } + + let body = 'var p = new NullProtoObj();\nvar s = 0;\n'; + for (let n = 0; n < originalNames.length; n++) { + const name = originalNames[n]!; + const isWild = originalTypes[n] === PathPartType.Wildcard; + const val = `u.substring(v[s*2], v[s*2+1])`; + const assign = isWild ? val : `decoder(${val})`; + body += `if (m & ${1 << n}) { p[${JSON.stringify(name)}] = ${assign}; s++; }`; + if (!omitBehavior) { + body += ` else { p[${JSON.stringify(name)}] = undefined; }`; + } + body += '\n'; + } + body += 'return p;'; + const fresh = new Function('decoder', 'NullProtoObj', 'm', 'u', 'v', body).bind(null, decoder, NullProtoObj) as SuperFactoryFn; + cache.set(cacheKey, fresh); + return fresh; +} + +export function computePresentBitmask(originalNames: ReadonlyArray, present: ReadonlyArray<{ name: string }>): number { + let mask = 0; + for (let origIdx = 0; origIdx < originalNames.length; origIdx++) { + const origName = originalNames[origIdx]!; + for (let p = 0; p < present.length; p++) { + if (present[p]!.name === origName) { + mask |= 1 << origIdx; + break; + } + } + } + return mask; +} diff --git a/packages/router/src/codegen/walker-strategy.spec.ts b/packages/router/src/codegen/walker-strategy.spec.ts new file mode 100644 index 0000000..0096fe4 --- /dev/null +++ b/packages/router/src/codegen/walker-strategy.spec.ts @@ -0,0 +1,113 @@ +import { describe, expect, it } from 'bun:test'; + +import { WildcardOrigin, createSegmentNode } from '../tree'; +import { detectWildCodegenSpec } from './walker-strategy'; + +describe('detectWildCodegenSpec', () => { + function rootWithStaticChild(key: string, child = createSegmentNode()) { + const root = createSegmentNode(); + root.staticChildren = Object.create(null) as Record>; + root.staticChildren[key] = child; + return root; + } + + it('returns null when root has a paramChild (mixed shape)', () => { + const root = rootWithStaticChild('files'); + root.paramChild = { + name: 'id', + tester: null, + patternSource: null, + ownerRouteID: 0, + next: createSegmentNode(), + nextSibling: null, + }; + expect(detectWildCodegenSpec(root)).toBeNull(); + }); + + it('returns null when root has a wildcardStore (no static layer)', () => { + const root = rootWithStaticChild('files'); + root.wildcardStore = 1; + expect(detectWildCodegenSpec(root)).toBeNull(); + }); + + it('returns null when root carries its own store (root-terminal collides with prefix shape)', () => { + const root = rootWithStaticChild('files'); + root.store = 1; + expect(detectWildCodegenSpec(root)).toBeNull(); + }); + + it('returns null when root has no staticChildren at all', () => { + const root = createSegmentNode(); + expect(detectWildCodegenSpec(root)).toBeNull(); + }); + + it('returns null when a child has its own staticChildren below the prefix', () => { + const child = createSegmentNode(); + child.staticChildren = Object.create(null) as Record>; + child.staticChildren['extra'] = createSegmentNode(); + expect(detectWildCodegenSpec(rootWithStaticChild('files', child))).toBeNull(); + }); + + it('returns null when a child has a paramChild below the prefix', () => { + const child = createSegmentNode(); + child.paramChild = { + name: 'id', + tester: null, + patternSource: null, + ownerRouteID: 0, + next: createSegmentNode(), + nextSibling: null, + }; + expect(detectWildCodegenSpec(rootWithStaticChild('files', child))).toBeNull(); + }); + + it('returns null when a child carries its own store (terminal sibling, not wildcard)', () => { + const child = createSegmentNode(); + child.store = 5; + expect(detectWildCodegenSpec(rootWithStaticChild('files', child))).toBeNull(); + }); + + it('returns null when a child has no wildcardStore', () => { + const child = createSegmentNode(); + expect(detectWildCodegenSpec(rootWithStaticChild('files', child))).toBeNull(); + }); + + it('returns the entry list when each child is purely a wildcard terminal', () => { + const child = createSegmentNode(); + child.wildcardStore = 7; + child.wildcardName = 'path'; + child.wildcardOrigin = WildcardOrigin.Star; + const spec = detectWildCodegenSpec(rootWithStaticChild('files', child)); + expect(spec).not.toBeNull(); + expect(spec).toHaveLength(1); + expect(spec![0]).toEqual({ + prefix: 'files', + wildcardOrigin: WildcardOrigin.Star, + wildcardName: 'path', + wildcardStore: 7, + }); + }); + + it('returns one entry per prefix when multiple prefixes share the shape', () => { + const a = createSegmentNode(); + a.wildcardStore = 1; + a.wildcardName = 'p1'; + a.wildcardOrigin = WildcardOrigin.Multi; + const b = createSegmentNode(); + b.wildcardStore = 2; + b.wildcardName = 'p2'; + b.wildcardOrigin = WildcardOrigin.Star; + const root = createSegmentNode(); + root.staticChildren = Object.create(null) as Record>; + root.staticChildren['static'] = a; + root.staticChildren['files'] = b; + const spec = detectWildCodegenSpec(root); + expect(spec).toHaveLength(2); + }); + + it('returns null when staticChildren is empty after key enumeration', () => { + const root = createSegmentNode(); + root.staticChildren = Object.create(null) as Record>; + expect(detectWildCodegenSpec(root)).toBeNull(); + }); +}); diff --git a/packages/router/src/codegen/walker-strategy.ts b/packages/router/src/codegen/walker-strategy.ts new file mode 100644 index 0000000..cf86343 --- /dev/null +++ b/packages/router/src/codegen/walker-strategy.ts @@ -0,0 +1,51 @@ +import type { SegmentNode } from '../tree'; + +import { WildcardOrigin } from '../tree'; + +export interface WildCodegenEntry { + prefix: string; + wildcardOrigin: WildcardOrigin; + wildcardName: string; + wildcardStore: number; +} + +export function detectWildCodegenSpec(root: SegmentNode): WildCodegenEntry[] | null { + if (root.paramChild !== null || root.wildcardStore !== null || root.store !== null) { + return null; + } + if (root.staticChildren === null) { + return null; + } + + const entries: WildCodegenEntry[] = []; + + for (const key in root.staticChildren) { + const child = root.staticChildren[key]!; + + if (child.staticChildren !== null) { + return null; + } + if (child.paramChild !== null) { + return null; + } + if (child.store !== null) { + return null; + } + if (child.wildcardStore === null) { + return null; + } + + entries.push({ + prefix: key, + wildcardOrigin: child.wildcardOrigin!, + wildcardName: child.wildcardName!, + wildcardStore: child.wildcardStore, + }); + } + + if (entries.length === 0) { + return null; + } + + return entries; +} diff --git a/packages/router/src/codegen/warmup.ts b/packages/router/src/codegen/warmup.ts new file mode 100644 index 0000000..2ba2367 --- /dev/null +++ b/packages/router/src/codegen/warmup.ts @@ -0,0 +1 @@ +export const WARMUP_ITERATIONS = 20; diff --git a/packages/router/src/codegen/wildcard-prefix-codegen.spec.ts b/packages/router/src/codegen/wildcard-prefix-codegen.spec.ts new file mode 100644 index 0000000..8ae797d --- /dev/null +++ b/packages/router/src/codegen/wildcard-prefix-codegen.spec.ts @@ -0,0 +1,97 @@ +import { describe, expect, it } from 'bun:test'; + +import { createMatchState } from '../matcher/match-state'; +import { WildcardOrigin, createSegmentNode } from '../tree'; +import { tryCodegenStaticPrefixWildcard } from './wildcard-prefix-codegen'; + +function rootWithPrefixes(entries: Array<{ prefix: string; origin: WildcardOrigin; store: number }>) { + const root = createSegmentNode(); + root.staticChildren = Object.create(null) as Record>; + for (const e of entries) { + const child = createSegmentNode(); + child.wildcardStore = e.store; + child.wildcardName = 'path'; + child.wildcardOrigin = e.origin; + root.staticChildren[e.prefix] = child; + } + return root; +} + +describe('tryCodegenStaticPrefixWildcard', () => { + it('returns null when the root shape disqualifies (no staticChildren)', () => { + const root = createSegmentNode(); + expect(tryCodegenStaticPrefixWildcard(root)).toBeNull(); + }); + + it('returns null when more than 8 prefixes qualify (linear probe budget)', () => { + const root = rootWithPrefixes( + Array.from({ length: 9 }, (_, i) => ({ prefix: `p${i}`, origin: WildcardOrigin.Star as const, store: i })), + ); + expect(tryCodegenStaticPrefixWildcard(root)).toBeNull(); + }); + + it('returns a compiled walker for the qualifying shape', () => { + const root = rootWithPrefixes([{ prefix: 'files', origin: WildcardOrigin.Star, store: 7 }]); + const walker = tryCodegenStaticPrefixWildcard(root); + expect(walker).not.toBeNull(); + expect(typeof walker).toBe('function'); + expect(walker!.name).toBe('compiledWildWalk'); + }); + + it('captures the wildcard tail under //', () => { + const root = rootWithPrefixes([{ prefix: 'files', origin: WildcardOrigin.Star, store: 7 }]); + const walker = tryCodegenStaticPrefixWildcard(root)!; + const state = createMatchState(2); + expect(walker('/files/a/b/c.txt', state)).toBe(true); + expect(state.handlerIndex).toBe(7); + expect(state.paramCount).toBe(1); + expect(state.paramOffsets[0]).toBe(7); + expect(state.paramOffsets[1]).toBe('/files/a/b/c.txt'.length); + }); + + it('matches the bare / path with an empty tail for star origin', () => { + const root = rootWithPrefixes([{ prefix: 'files', origin: WildcardOrigin.Star, store: 7 }]); + const walker = tryCodegenStaticPrefixWildcard(root)!; + const state = createMatchState(2); + expect(walker('/files', state)).toBe(true); + expect(state.handlerIndex).toBe(7); + expect(state.paramOffsets[0]).toBe(state.paramOffsets[1]); + }); + + it('rejects bare / for multi origin (multi requires non-empty tail)', () => { + const root = rootWithPrefixes([{ prefix: 'api', origin: WildcardOrigin.Multi, store: 3 }]); + const walker = tryCodegenStaticPrefixWildcard(root)!; + const state = createMatchState(2); + expect(walker('/api', state)).toBe(false); + expect(walker('/api/x', state)).toBe(true); + expect(state.handlerIndex).toBe(3); + }); + + it('returns false for malformed paths missing the leading slash', () => { + const root = rootWithPrefixes([{ prefix: 'files', origin: WildcardOrigin.Star, store: 7 }]); + const walker = tryCodegenStaticPrefixWildcard(root)!; + const state = createMatchState(2); + expect(walker('files/a', state)).toBe(false); + }); + + it('returns false when no prefix matches', () => { + const root = rootWithPrefixes([{ prefix: 'files', origin: WildcardOrigin.Star, store: 7 }]); + const walker = tryCodegenStaticPrefixWildcard(root)!; + const state = createMatchState(2); + expect(walker('/other/x', state)).toBe(false); + }); + + it('dispatches to the right store across multiple prefixes', () => { + const root = rootWithPrefixes([ + { prefix: 'static', origin: WildcardOrigin.Star, store: 1 }, + { prefix: 'files', origin: WildcardOrigin.Star, store: 2 }, + ]); + const walker = tryCodegenStaticPrefixWildcard(root)!; + const stateA = createMatchState(2); + expect(walker('/static/a.js', stateA)).toBe(true); + expect(stateA.handlerIndex).toBe(1); + const stateB = createMatchState(2); + expect(walker('/files/b.png', stateB)).toBe(true); + expect(stateB.handlerIndex).toBe(2); + }); +}); diff --git a/packages/router/src/codegen/wildcard-prefix-codegen.ts b/packages/router/src/codegen/wildcard-prefix-codegen.ts new file mode 100644 index 0000000..e1e5f3b --- /dev/null +++ b/packages/router/src/codegen/wildcard-prefix-codegen.ts @@ -0,0 +1,54 @@ +import type { SegmentNode } from '../tree'; +import type { MatchFn } from '../types'; + +import { WildcardOrigin } from '../tree'; +import { detectWildCodegenSpec } from './walker-strategy'; + +export function tryCodegenStaticPrefixWildcard(root: SegmentNode): MatchFn | null { + const entries = detectWildCodegenSpec(root); + + if (entries === null || entries.length > 8) { + return null; + } + + let body = ` + 'use strict'; + return function compiledWildWalk(url, state) { + var len = url.length; + if (len < 2 || url.charCodeAt(0) !== 47) return false; + `; + + for (const e of entries) { + const prefixWithSlash = e.prefix + '/'; + const prefixLen = prefixWithSlash.length; + const minLen = e.wildcardOrigin === WildcardOrigin.Multi ? prefixLen + 1 : prefixLen; + const sliceStart = prefixLen + 1; + + body += ` + if (len >= ${minLen + 1} && url.startsWith(${JSON.stringify(prefixWithSlash)}, 1)) { + state.paramOffsets[0] = ${sliceStart}; + state.paramOffsets[1] = len; + state.paramCount = 1; + state.handlerIndex = ${e.wildcardStore}; + return true; + }`; + + if (e.wildcardOrigin === WildcardOrigin.Star) { + body += ` + if (len === ${e.prefix.length + 1} && url.startsWith(${JSON.stringify(e.prefix)}, 1)) { + state.paramOffsets[0] = len; + state.paramOffsets[1] = len; + state.paramCount = 1; + state.handlerIndex = ${e.wildcardStore}; + return true; + }`; + } + } + + body += ` + return false; + }; + `; + + return new Function(body)() as MatchFn; +} diff --git a/packages/router/src/error.spec.ts b/packages/router/src/error.spec.ts index 3eae554..da9a50d 100644 --- a/packages/router/src/error.spec.ts +++ b/packages/router/src/error.spec.ts @@ -1,47 +1,56 @@ import { describe, it, expect } from 'bun:test'; +import { expectErrorKind } from '../test/test-utils'; import { RouterError } from './error'; +import { RouterErrorKind } from './types'; describe('RouterError', () => { it('should be instanceof Error', () => { - const err = new RouterError({ kind: 'route-parse', message: 'bad path' }); + const err = new RouterError({ kind: RouterErrorKind.RouteParse, message: 'bad path', suggestion: 'fix it' }); expect(err).toBeInstanceOf(Error); expect(err).toBeInstanceOf(RouterError); }); it('should set name to RouterError', () => { - const err = new RouterError({ kind: 'route-parse', message: 'bad path' }); + const err = new RouterError({ kind: RouterErrorKind.RouteParse, message: 'bad path', suggestion: 'fix it' }); expect(err.name).toBe('RouterError'); }); it('should use data.message as Error message', () => { - const err = new RouterError({ kind: 'route-parse', message: 'Path must start with /' }); + const err = new RouterError({ + kind: RouterErrorKind.RouteParse, + message: 'Path must start with /', + suggestion: 'add leading slash', + }); expect(err.message).toBe('Path must start with /'); }); it('should preserve data object with all fields', () => { const data = { - kind: 'route-conflict' as const, - message: 'conflict', - path: '/users/:id', + kind: RouterErrorKind.ParamDuplicate as const, + message: 'duplicate param id', + path: '/users/:id/posts/:id', method: 'GET', segment: 'id', - suggestion: 'Use a different path', + suggestion: 'Rename one of the :id parameters.', }; const err = new RouterError(data); expect(err.data).toBe(data); - expect(err.data.kind).toBe('route-conflict'); - expect(err.data.path).toBe('/users/:id'); + expect(err.data.kind).toBe(RouterErrorKind.ParamDuplicate); + expect(err.data.path).toBe('/users/:id/posts/:id'); expect(err.data.method).toBe('GET'); - expect(err.data.segment).toBe('id'); - expect(err.data.suggestion).toBe('Use a different path'); + + const dup = expectErrorKind(err.data, RouterErrorKind.ParamDuplicate); + expect(dup.segment).toBe('id'); + expect(dup.suggestion).toBe('Rename one of the :id parameters.'); }); it('should preserve data.registeredCount for addAll errors', () => { const err = new RouterError({ - kind: 'route-duplicate', + kind: RouterErrorKind.RouteDuplicate, message: 'duplicate', + suggestion: 'Use a different path or HTTP method', registeredCount: 3, }); @@ -49,27 +58,35 @@ describe('RouterError', () => { }); it('should have readonly data property', () => { - const err = new RouterError({ kind: 'segment-limit', message: 'too long' }); + const err = new RouterError({ kind: RouterErrorKind.RouteParse, message: 'too long', suggestion: 'shorten' }); expect(typeof err.data).toBe('object'); - expect(err.data.kind).toBe('segment-limit'); + expect(err.data.kind).toBe(RouterErrorKind.RouteParse); }); - it('should support all error kinds', () => { - const kinds = [ - 'segment-limit', 'route-conflict', - 'route-duplicate', 'route-parse', 'param-duplicate', 'regex-unsafe', - 'regex-anchor', 'regex-timeout', 'method-limit', 'method-not-found', - 'not-built', 'path-too-long', 'router-sealed', - ] as const; + it('should support all error kinds — required fields stubbed per discriminated union', () => { + const variants = [ + { kind: RouterErrorKind.RouterSealed as const, message: 'sealed', suggestion: 'recreate' }, + { kind: RouterErrorKind.RouteDuplicate as const, message: 'dup', suggestion: 'use another' }, + { + kind: RouterErrorKind.RouteConflict as const, + message: 'conflict', + segment: 'x', + conflictsWith: 'y', + suggestion: 'reorder', + }, + { kind: RouterErrorKind.RouteParse as const, message: 'parse error', suggestion: 'fix syntax' }, + { kind: RouterErrorKind.ParamDuplicate as const, message: 'param dup', path: '/a', segment: 'p', suggestion: 'rename' }, + { kind: RouterErrorKind.MethodLimit as const, message: 'method limit', method: 'X', suggestion: 'reduce' }, + ]; - for (const kind of kinds) { - const err = new RouterError({ kind, message: `error: ${kind}` }); - expect(err.data.kind).toBe(kind); + for (const data of variants) { + const err = new RouterError(data); + expect(err.data.kind).toBe(data.kind); } }); it('should have a proper stack trace', () => { - const err = new RouterError({ kind: 'route-parse', message: 'test' }); + const err = new RouterError({ kind: RouterErrorKind.RouteParse, message: 'test', suggestion: 'fix' }); expect(err.stack).toBeDefined(); expect(typeof err.stack).toBe('string'); }); diff --git a/packages/router/src/error.ts b/packages/router/src/error.ts index 02c557a..e3ee0d3 100644 --- a/packages/router/src/error.ts +++ b/packages/router/src/error.ts @@ -1,9 +1,25 @@ -import type { RouterErrData } from './types'; +import type { RouterErrorData } from './types'; +/** + * Error thrown by the router for every registration / build / option + * failure. `match()` does not throw `RouterError` — misses return `null` + * — but `decodeURIComponent` may still propagate a built-in `URIError` + * when a captured `:param` slot contains a malformed `%xx` byte. + * + * The structured payload lives on {@link RouterError.data} as a + * {@link RouterErrorData} discriminated union — narrow on `data.kind` + * to access the kind-specific fields. `error.message` mirrors + * `data.message` so the default `Error` toString remains useful. + */ export class RouterError extends Error { - readonly data: RouterErrData; + /** + * Structured failure payload. Use `instanceof RouterError` to guard, + * then narrow on `data.kind` (a {@link import('./types').RouterErrorKind} + * value) to read kind-specific fields. + */ + readonly data: RouterErrorData; - constructor(data: RouterErrData) { + constructor(data: RouterErrorData) { super(data.message); this.name = 'RouterError'; this.data = data; diff --git a/packages/router/src/internal/index.ts b/packages/router/src/internal/index.ts new file mode 100644 index 0000000..acd24c2 --- /dev/null +++ b/packages/router/src/internal/index.ts @@ -0,0 +1 @@ +export { NullProtoObj, createNullProtoBucket, EMPTY_PARAMS, STATIC_META, CACHE_META, DYNAMIC_META } from './null-proto-obj'; diff --git a/packages/router/src/internal/null-proto-obj.spec.ts b/packages/router/src/internal/null-proto-obj.spec.ts new file mode 100644 index 0000000..5517970 --- /dev/null +++ b/packages/router/src/internal/null-proto-obj.spec.ts @@ -0,0 +1,69 @@ +import { describe, expect, it } from 'bun:test'; + +import { MatchSource } from '../types'; +import { CACHE_META, DYNAMIC_META, EMPTY_PARAMS, NullProtoObj, STATIC_META, createNullProtoBucket } from './null-proto-obj'; + +describe('NullProtoObj', () => { + it('produces an object whose prototype chain does not include Object.prototype', () => { + const obj = new NullProtoObj(); + expect(Object.getPrototypeOf(obj)).not.toBe(Object.prototype); + }); + + it('exposes no inherited keys (hasOwnProperty / toString / etc. are unreachable)', () => { + const obj = new NullProtoObj() as Record; + expect((obj as unknown as { hasOwnProperty?: unknown }).hasOwnProperty).toBeUndefined(); + expect((obj as unknown as { toString?: unknown }).toString).toBeUndefined(); + }); + + it('allows direct property assignment and reads', () => { + const obj = new NullProtoObj(); + obj['foo'] = 1; + expect(obj['foo']).toBe(1); + }); + + it('shares one stable hidden class across instances (prototype identity)', () => { + const a = new NullProtoObj(); + const b = new NullProtoObj(); + expect(Object.getPrototypeOf(a)).toBe(Object.getPrototypeOf(b)); + }); +}); + +describe('createNullProtoBucket', () => { + it('returns a typed record with no inherited properties', () => { + const bucket = createNullProtoBucket(); + bucket['x'] = 42; + expect(bucket['x']).toBe(42); + expect(Object.getPrototypeOf(bucket)).not.toBe(Object.prototype); + }); +}); + +describe('frozen singletons', () => { + it('EMPTY_PARAMS is frozen and inert', () => { + expect(Object.isFrozen(EMPTY_PARAMS)).toBe(true); + expect(() => { + (EMPTY_PARAMS as Record)['x'] = 1; + }).toThrow(); + }); + + it('STATIC_META has source: "static" and is frozen', () => { + expect(STATIC_META.source).toBe(MatchSource.Static); + expect(Object.isFrozen(STATIC_META)).toBe(true); + }); + + it('CACHE_META has source: "cache" and is frozen', () => { + expect(CACHE_META.source).toBe(MatchSource.Cache); + expect(Object.isFrozen(CACHE_META)).toBe(true); + }); + + it('DYNAMIC_META has source: "dynamic" and is frozen', () => { + expect(DYNAMIC_META.source).toBe(MatchSource.Dynamic); + expect(Object.isFrozen(DYNAMIC_META)).toBe(true); + }); + + it('singleton identity is stable across imports', () => { + expect(STATIC_META).toBe(STATIC_META); + expect(CACHE_META).toBe(CACHE_META); + expect(DYNAMIC_META).toBe(DYNAMIC_META); + expect(EMPTY_PARAMS).toBe(EMPTY_PARAMS); + }); +}); diff --git a/packages/router/src/internal/null-proto-obj.ts b/packages/router/src/internal/null-proto-obj.ts new file mode 100644 index 0000000..9f4f866 --- /dev/null +++ b/packages/router/src/internal/null-proto-obj.ts @@ -0,0 +1,19 @@ +import type { MatchMeta, RouteParams } from '../types'; + +import { MatchSource } from '../types'; + +export const NullProtoObj: { new (): Record } = (() => { + const F = function () {} as unknown as { new (): Record }; + (F as unknown as { prototype: object }).prototype = Object.freeze(Object.create(null)); + return F; +})(); + +export function createNullProtoBucket(): Record { + return new NullProtoObj() as Record; +} + +export const EMPTY_PARAMS: RouteParams = Object.freeze(new NullProtoObj()) as RouteParams; + +export const STATIC_META: MatchMeta = Object.freeze({ source: MatchSource.Static } as const); +export const CACHE_META: MatchMeta = Object.freeze({ source: MatchSource.Cache } as const); +export const DYNAMIC_META: MatchMeta = Object.freeze({ source: MatchSource.Dynamic } as const); diff --git a/packages/router/src/matcher/decoder.spec.ts b/packages/router/src/matcher/decoder.spec.ts new file mode 100644 index 0000000..f943fa4 --- /dev/null +++ b/packages/router/src/matcher/decoder.spec.ts @@ -0,0 +1,25 @@ +import { describe, it, expect } from 'bun:test'; + +import { decoder } from './decoder'; + +describe('decoder', () => { + it('should decode percent-encoded characters', () => { + expect(decoder('hello%20world')).toBe('hello world'); + }); + + it('should return raw string when segment has no percent sign (fast path)', () => { + expect(decoder('plainpath')).toBe('plainpath'); + }); + + it('should throw on invalid percent encoding (caller responsibility)', () => { + expect(() => decoder('%ZZ')).toThrow(); + }); + + it('should decode %2F to / in param values', () => { + expect(decoder('a%2Fb')).toBe('a/b'); + }); + + it('should decode multiple percent-encoded chars', () => { + expect(decoder('%E4%B8%AD%E6%96%87')).toBe('中文'); + }); +}); diff --git a/packages/router/src/matcher/decoder.ts b/packages/router/src/matcher/decoder.ts new file mode 100644 index 0000000..5afc9ef --- /dev/null +++ b/packages/router/src/matcher/decoder.ts @@ -0,0 +1,8 @@ +import type { DecoderFn } from '../types'; + +export const decoder: DecoderFn = (raw: string): string => { + if (!raw.includes('%')) { + return raw; + } + return decodeURIComponent(raw); +}; diff --git a/packages/router/src/matcher/index.ts b/packages/router/src/matcher/index.ts new file mode 100644 index 0000000..583d17a --- /dev/null +++ b/packages/router/src/matcher/index.ts @@ -0,0 +1,3 @@ +export { decoder } from './decoder'; +export { createMatchState } from './match-state'; +export { createSegmentWalker } from './segment-walk'; diff --git a/packages/router/src/matcher/match-state.spec.ts b/packages/router/src/matcher/match-state.spec.ts index 4aec743..3e87afe 100644 --- a/packages/router/src/matcher/match-state.spec.ts +++ b/packages/router/src/matcher/match-state.spec.ts @@ -1,43 +1,38 @@ import { describe, it, expect } from 'bun:test'; -import { createMatchState, resetMatchState } from './match-state'; -import type { MatchState } from './match-state'; +import { createMatchState } from './match-state'; describe('MatchState', () => { describe('createMatchState', () => { it('should initialize handlerIndex to -1', () => { - const state = createMatchState(); + const state = createMatchState(64); expect(state.handlerIndex).toBe(-1); }); it('should initialize paramCount to 0', () => { - const state = createMatchState(); + const state = createMatchState(64); expect(state.paramCount).toBe(0); }); - it('should initialize errorKind to null', () => { - const state = createMatchState(); - expect(state.errorKind).toBeNull(); + it('should pre-allocate paramOffsets Int32Array sized from the given param cap', () => { + const state = createMatchState(64); + expect(state.paramOffsets).toBeInstanceOf(Int32Array); + expect(state.paramOffsets.length).toBe(64 * 2 + 2); }); - it('should initialize errorMessage to null', () => { - const state = createMatchState(); - expect(state.errorMessage).toBeNull(); + it('should size paramOffsets from the maxParams argument', () => { + const state = createMatchState(8); + expect(state.paramOffsets.length).toBe(8 * 2 + 2); }); - it('should pre-allocate paramNames array with 32 slots', () => { - const state = createMatchState(); - expect(state.paramNames.length).toBe(32); - }); - - it('should pre-allocate paramValues array with 32 slots', () => { - const state = createMatchState(); - expect(state.paramValues.length).toBe(32); + it('should clamp paramOffsets to the 2-slot floor when no params are observed', () => { + const state = createMatchState(0); + expect(state.paramOffsets.length).toBe(2); }); it('should create independent state objects', () => { - const s1 = createMatchState(); - const s2 = createMatchState(); + const s1 = createMatchState(64); + const s2 = createMatchState(64); s1.handlerIndex = 5; s1.paramCount = 2; @@ -46,70 +41,4 @@ describe('MatchState', () => { expect(s2.paramCount).toBe(0); }); }); - - describe('resetMatchState', () => { - it('should reset handlerIndex to -1', () => { - const state = createMatchState(); - state.handlerIndex = 42; - - resetMatchState(state); - - expect(state.handlerIndex).toBe(-1); - }); - - it('should reset paramCount to 0', () => { - const state = createMatchState(); - state.paramCount = 3; - - resetMatchState(state); - - expect(state.paramCount).toBe(0); - }); - - it('should reset errorKind to null', () => { - const state = createMatchState(); - state.errorKind = 'regex-timeout'; - state.errorMessage = 'bad %'; - - resetMatchState(state); - - expect(state.errorKind).toBeNull(); - expect(state.errorMessage).toBeNull(); - }); - - it('should NOT clear paramNames or paramValues arrays (reused)', () => { - const state = createMatchState(); - state.paramNames[0] = 'id'; - state.paramValues[0] = '42'; - state.paramCount = 1; - - resetMatchState(state); - - // Arrays retain previous values (not cleared for performance) - expect(state.paramNames[0]).toBe('id'); - expect(state.paramValues[0]).toBe('42'); - }); - - it('should allow reuse after reset', () => { - const state = createMatchState(); - - // First use - state.handlerIndex = 1; - state.paramNames[0] = 'userId'; - state.paramValues[0] = '100'; - state.paramCount = 1; - - // Reset and second use - resetMatchState(state); - state.handlerIndex = 2; - state.paramNames[0] = 'postId'; - state.paramValues[0] = '200'; - state.paramCount = 1; - - expect(state.handlerIndex).toBe(2); - expect(state.paramNames[0]).toBe('postId'); - expect(state.paramValues[0]).toBe('200'); - expect(state.paramCount).toBe(1); - }); - }); }); diff --git a/packages/router/src/matcher/match-state.ts b/packages/router/src/matcher/match-state.ts index b4b0afd..a0bdbcf 100644 --- a/packages/router/src/matcher/match-state.ts +++ b/packages/router/src/matcher/match-state.ts @@ -1,29 +1,11 @@ -export interface MatchState { - handlerIndex: number; - paramCount: number; - paramNames: string[]; - paramValues: string[]; - /** Error propagation from matcher closures (replaces Result) */ - errorKind: string | null; - errorMessage: string | null; -} +import type { MatchState } from '../types'; -const MAX_PARAMS = 32; +export function createMatchState(maxParams: number): MatchState { + const paramOffsets = new Int32Array(Math.max(2, maxParams * 2 + 2)); -export function createMatchState(): MatchState { return { handlerIndex: -1, paramCount: 0, - paramNames: new Array(MAX_PARAMS), - paramValues: new Array(MAX_PARAMS), - errorKind: null, - errorMessage: null, + paramOffsets, }; } - -export function resetMatchState(state: MatchState): void { - state.handlerIndex = -1; - state.paramCount = 0; - state.errorKind = null; - state.errorMessage = null; -} diff --git a/packages/router/src/matcher/pattern-tester.spec.ts b/packages/router/src/matcher/pattern-tester.spec.ts deleted file mode 100644 index 1488005..0000000 --- a/packages/router/src/matcher/pattern-tester.spec.ts +++ /dev/null @@ -1,256 +0,0 @@ -import { describe, it, expect } from 'bun:test'; - -import { buildPatternTester, ROUTE_REGEX_TIMEOUT } from './pattern-tester'; - -describe('buildPatternTester', () => { - // ── Shortcut patterns (digit) ── - - it('should return true for digit string with digit shortcut', () => { - const tester = buildPatternTester('\\d+', /^\d+$/, undefined); - - expect(tester('123')).toBe(true); - }); - - it('should return false for non-digit string with digit shortcut', () => { - const tester = buildPatternTester('\\d+', /^\d+$/, undefined); - - expect(tester('abc')).toBe(false); - }); - - it('should return false for empty string with digit shortcut', () => { - const tester = buildPatternTester('\\d+', /^\d+$/, undefined); - - expect(tester('')).toBe(false); - }); - - it('should match \\d{1,} as digit shortcut', () => { - const tester = buildPatternTester('\\d{1,}', /^\d{1,}$/, undefined); - - expect(tester('99')).toBe(true); - expect(tester('abc')).toBe(false); - }); - - it('should match [0-9]+ as digit shortcut', () => { - const tester = buildPatternTester('[0-9]+', /^[0-9]+$/, undefined); - - expect(tester('42')).toBe(true); - expect(tester('xx')).toBe(false); - }); - - it('should match [0-9]{1,} as digit shortcut', () => { - const tester = buildPatternTester('[0-9]{1,}', /^[0-9]{1,}$/, undefined); - - expect(tester('7')).toBe(true); - expect(tester('')).toBe(false); - }); - - // ── Shortcut patterns (alpha) ── - - it('should return true for alpha string with alpha shortcut', () => { - const tester = buildPatternTester('[a-zA-Z]+', /^[a-zA-Z]+$/, undefined); - - expect(tester('abc')).toBe(true); - }); - - it('should return false for digits with alpha shortcut', () => { - const tester = buildPatternTester('[a-zA-Z]+', /^[a-zA-Z]+$/, undefined); - - expect(tester('123')).toBe(false); - }); - - it('should return false for empty string with alpha shortcut', () => { - const tester = buildPatternTester('[a-zA-Z]+', /^[a-zA-Z]+$/, undefined); - - expect(tester('')).toBe(false); - }); - - it('should match [A-Za-z]+ as alpha shortcut', () => { - const tester = buildPatternTester('[A-Za-z]+', /^[A-Za-z]+$/, undefined); - - expect(tester('Hello')).toBe(true); - expect(tester('123')).toBe(false); - }); - - // ── Shortcut patterns (alphanumeric) ── - - it('should return true for alphanumeric with \\w+ shortcut', () => { - const tester = buildPatternTester('\\w+', /^\w+$/, undefined); - - expect(tester('abc_123')).toBe(true); - }); - - it('should return false for empty string with \\w+ shortcut', () => { - const tester = buildPatternTester('\\w+', /^\w+$/, undefined); - - expect(tester('')).toBe(false); - }); - - it('should reject special chars with \\w+ shortcut', () => { - const tester = buildPatternTester('\\w+', /^\w+$/, undefined); - - expect(tester('abc@def')).toBe(false); - }); - - it('should accept dash and underscore with alphanum dash shortcut', () => { - const tester = buildPatternTester('[A-Za-z0-9_-]+', /^[A-Za-z0-9_-]+$/, undefined); - - expect(tester('foo-bar_baz')).toBe(true); - }); - - it('should match \\w{1,} as alphanum shortcut', () => { - const tester = buildPatternTester('\\w{1,}', /^\w{1,}$/, undefined); - - expect(tester('test')).toBe(true); - expect(tester('')).toBe(false); - }); - - // ── [^/]+ shortcut ── - - it('should return true for non-slash string with [^/]+ shortcut', () => { - const tester = buildPatternTester('[^/]+', /^[^/]+$/, undefined); - - expect(tester('hello')).toBe(true); - }); - - it('should return false for empty string with [^/]+ shortcut', () => { - const tester = buildPatternTester('[^/]+', /^[^/]+$/, undefined); - - expect(tester('')).toBe(false); - }); - - it('should return false for value containing slash with [^/]+ shortcut', () => { - const tester = buildPatternTester('[^/]+', /^[^/]+$/, undefined); - - expect(tester('a/b')).toBe(false); - }); - - // ── Custom patterns (compiled.test()) ── - - it('should use compiled.test() for unknown custom pattern', () => { - const tester = buildPatternTester('\\d{4}-\\d{2}-\\d{2}', /^\d{4}-\d{2}-\d{2}$/, undefined); - - expect(tester('2024-01-15')).toBe(true); - expect(tester('not-a-date')).toBe(false); - }); - - it('should use compiled.test() when source is undefined', () => { - const tester = buildPatternTester(undefined, /^[A-Z]{2}$/, undefined); - - expect(tester('AB')).toBe(true); - expect(tester('abc')).toBe(false); - }); - - it('should use compiled.test() when source is empty string', () => { - const tester = buildPatternTester('', /^.*$/, undefined); - - expect(tester('anything')).toBe(true); - }); - - // ── Timeout wrapping ── - - it('should not wrap when maxExecutionMs is 0', () => { - const tester = buildPatternTester('custom', /^[a-z]+$/, { maxExecutionMs: 0 }); - - expect(tester('abc')).toBe(true); - }); - - it('should not wrap when maxExecutionMs is negative', () => { - const tester = buildPatternTester('custom', /^[a-z]+$/, { maxExecutionMs: -1 }); - - expect(tester('abc')).toBe(true); - }); - - it('should return false when onTimeout returns false (suppress throw)', () => { - let timeoutTriggered = false; - - const tester = buildPatternTester('custom', /^[a-z]+$/, { - maxExecutionMs: 0.000001, // 1 nanosecond — any regex execution exceeds this - onTimeout: () => { - timeoutTriggered = true; - - return false; // suppress throw, return false instead - }, - }); - - const result = tester('test'); - - // If timeout was triggered, the tester should have returned false - if (timeoutTriggered) { - expect(result).toBe(false); - } - }); - - it('should throw RouteRegexTimeoutError when onTimeout does not return false', () => { - let timeoutTriggered = false; - - const tester = buildPatternTester('custom', /^[a-z]+$/, { - maxExecutionMs: 0.000001, // 1 nanosecond — will exceed - onTimeout: () => { - timeoutTriggered = true; - - return undefined; // does not return false → throw - }, - }); - - try { - tester('test'); - - // If no throw, timeout wasn't triggered (regex was too fast) — that's ok - } catch (e: any) { - expect(e[ROUTE_REGEX_TIMEOUT]).toBe(true); - expect(e.message).toContain('exceeded'); - timeoutTriggered = true; - } - - // Regardless of timing, the function should exist - expect(typeof tester).toBe('function'); - }); - - it('should throw when onTimeout returns true', () => { - const tester = buildPatternTester('custom', /^[a-z]+$/, { - maxExecutionMs: 0.000001, - onTimeout: () => true, - }); - - try { - tester('test'); - } catch (e: any) { - expect(e[ROUTE_REGEX_TIMEOUT]).toBe(true); - } - }); - - it('should wrap custom pattern with timeout', () => { - let called = false; - - const tester = buildPatternTester('custom', /^[a-z]+$/, { - maxExecutionMs: 0.000001, - onTimeout: (_pattern, _duration) => { - called = true; - - return false; - }, - }); - - tester('abc'); - - // Callback may or may not be called depending on execution speed - expect(typeof tester).toBe('function'); - }); - - it('should wrap anonymous pattern (source=undefined) with timeout', () => { - let called = false; - - const tester = buildPatternTester(undefined, /^[a-z]+$/, { - maxExecutionMs: 0.000001, - onTimeout: (pattern) => { - called = true; - expect(pattern).toBe(''); - - return false; - }, - }); - - tester('abc'); - expect(typeof tester).toBe('function'); - }); -}); diff --git a/packages/router/src/matcher/pattern-tester.ts b/packages/router/src/matcher/pattern-tester.ts deleted file mode 100644 index 0c7118a..0000000 --- a/packages/router/src/matcher/pattern-tester.ts +++ /dev/null @@ -1,141 +0,0 @@ -export const ROUTE_REGEX_TIMEOUT = Symbol('zipbul.route-regex-timeout'); - -export interface PatternTesterOptions { - readonly maxExecutionMs?: number; - readonly onTimeout?: (pattern: string, durationMs: number) => boolean | void; -} - -interface RouteRegexTimeoutMarker { - readonly [ROUTE_REGEX_TIMEOUT]?: true; -} - -type RouteRegexTimeoutError = Error & RouteRegexTimeoutMarker; - -const DIGIT_PATTERNS = new Set(['\\d+', '\\d{1,}', '[0-9]+', '[0-9]{1,}']); -const ALPHA_PATTERNS = new Set(['[a-zA-Z]+', '[A-Za-z]+']); -const ALPHANUM_PATTERNS = new Set(['[A-Za-z0-9_\\-]+', '[A-Za-z0-9_-]+', '\\w+', '\\w{1,}']); - -const now = (): number => Number(Bun.nanoseconds()) / 1e6; - -function buildPatternTester( - source: string | undefined, - compiled: RegExp, - options?: PatternTesterOptions, -): (value: string) => boolean { - const raw = source ?? ''; - - const wrap = (tester: (value: string) => boolean): ((value: string) => boolean) => { - const maxExecutionMs = options?.maxExecutionMs; - - if (maxExecutionMs === undefined || maxExecutionMs <= 0) { - return tester; - } - - const limit = maxExecutionMs; - - return value => { - const start = now(); - const result = tester(value); - const duration = now() - start; - - if (duration > limit) { - const shouldThrow = options?.onTimeout?.(raw, duration); - - if (shouldThrow === false) { - return false; - } - - const timeoutError = new Error( - `Route parameter regex '${raw}' exceeded ${limit} ms(took ${duration.toFixed(3)}ms)`, - ) as RouteRegexTimeoutError; - - Object.defineProperty(timeoutError, ROUTE_REGEX_TIMEOUT, { - value: true, - configurable: true, - }); - - throw timeoutError; - } - - return result; - }; - }; - - if (source === undefined || source.length === 0) { - return wrap(value => compiled.test(value)); - } - - if (DIGIT_PATTERNS.has(source)) { - return isAllDigits; - } - - if (ALPHA_PATTERNS.has(source)) { - return isAlpha; - } - - if (ALPHANUM_PATTERNS.has(source)) { - return isAlphaNumericDash; - } - - if (source === '[^/]+') { - return value => value.length > 0 && !value.includes('/'); - } - - return wrap(value => compiled.test(value)); -} - -function isAllDigits(value: string): boolean { - if (value.length === 0) { - return false; - } - - for (let i = 0; i < value.length; i++) { - const code = value.charCodeAt(i); - - if (code < 48 || code > 57) { - return false; - } - } - - return true; -} - -function isAlpha(value: string): boolean { - if (!value.length) { - return false; - } - - for (let i = 0; i < value.length; i++) { - const code = value.charCodeAt(i); - const upper = code >= 65 && code <= 90; - const lower = code >= 97 && code <= 122; - - if (!upper && !lower) { - return false; - } - } - - return true; -} - -function isAlphaNumericDash(value: string): boolean { - if (!value.length) { - return false; - } - - for (let i = 0; i < value.length; i++) { - const code = value.charCodeAt(i); - const upper = code >= 65 && code <= 90; - const lower = code >= 97 && code <= 122; - const digit = code >= 48 && code <= 57; - - if (!upper && !lower && !digit && code !== 45 && code !== 95) { - return false; - } - } - - return true; -} - -export { buildPatternTester }; -export type { RouteRegexTimeoutError }; diff --git a/packages/router/src/matcher/radix-matcher.spec.ts b/packages/router/src/matcher/radix-matcher.spec.ts deleted file mode 100644 index 5894429..0000000 --- a/packages/router/src/matcher/radix-matcher.spec.ts +++ /dev/null @@ -1,48 +0,0 @@ -import { describe, it, expect } from 'bun:test'; - -import { countNodes } from './radix-matcher'; -import { createRadixNode, createParamNode } from '../builder/radix-node'; - -describe('countNodes', () => { - it('should count a single root node', () => { - const root = createRadixNode(''); - expect(countNodes(root)).toBe(1); - }); - - it('should count root + inert children', () => { - const root = createRadixNode(''); - root.inert = { - [47]: createRadixNode('/users'), - [97]: createRadixNode('api'), - }; - - expect(countNodes(root)).toBe(3); - }); - - it('should count param nodes', () => { - const root = createRadixNode(''); - root.params = createParamNode('id'); - - expect(countNodes(root)).toBe(2); - }); - - it('should count param chain', () => { - const root = createRadixNode(''); - root.params = createParamNode('id'); - root.params.next = createParamNode('name'); - - expect(countNodes(root)).toBe(3); - }); - - it('should count deeply nested tree', () => { - const root = createRadixNode(''); - const child = createRadixNode('/users/'); - child.params = createParamNode('id'); - child.params.inert = createRadixNode('/posts'); - - root.inert = { [47]: child }; - - // root(1) + child(1) + param(1) + param.inert(1) = 4 - expect(countNodes(root)).toBe(4); - }); -}); diff --git a/packages/router/src/matcher/radix-matcher.ts b/packages/router/src/matcher/radix-matcher.ts deleted file mode 100644 index 5e9ee0c..0000000 --- a/packages/router/src/matcher/radix-matcher.ts +++ /dev/null @@ -1,32 +0,0 @@ -import type { RadixNode } from '../builder/radix-node'; -import type { MatchState } from './match-state'; - -export type RadixMatchFn = ( - url: string, - startIndex: number, - state: MatchState, -) => boolean; - -export function countNodes(root: RadixNode): number { - let count = 1; - - if (root.inert !== null) { - for (const key in root.inert) { - count += countNodes(root.inert[key as unknown as number]!); - } - } - - let param = root.params; - - while (param !== null) { - count++; - - if (param.inert !== null) { - count += countNodes(param.inert); - } - - param = param.next; - } - - return count; -} diff --git a/packages/router/src/matcher/radix-walk.spec.ts b/packages/router/src/matcher/radix-walk.spec.ts deleted file mode 100644 index d461a63..0000000 --- a/packages/router/src/matcher/radix-walk.spec.ts +++ /dev/null @@ -1,471 +0,0 @@ -import { describe, it, expect } from 'bun:test'; - -import { createRadixWalker } from './radix-walk'; -import { createMatchState } from './match-state'; -import { createRadixNode, createParamNode } from '../builder/radix-node'; -import { buildDecoder } from '../processor/decoder'; - -const decoder = buildDecoder(); - -function walk(fn: ReturnType, url: string) { - const state = createMatchState(); - const result = fn(url, 0, state); - - if (state.errorKind) throw new Error(`Walk error: ${state.errorKind}: ${state.errorMessage}`); - if (!result) return null; - - const params: Record = {}; - for (let i = 0; i < state.paramCount; i++) { - params[state.paramNames[i]!] = state.paramValues[i]!; - } - - return { handlerIndex: state.handlerIndex, params }; -} - -describe('createRadixWalker', () => { - it('should return a function', () => { - const root = createRadixNode(''); - const fn = createRadixWalker(root, [], decoder, true); - expect(typeof fn).toBe('function'); - }); - - describe('static matching', () => { - it('should match a static route', () => { - const root = createRadixNode(''); - const child = createRadixNode('/users'); - child.store = 0; - root.inert = { [47]: child }; - - const fn = createRadixWalker(root, [], decoder, true); - const result = walk(fn, '/users'); - - expect(result).not.toBeNull(); - expect(result!.handlerIndex).toBe(0); - }); - - it('should return false for non-matching path', () => { - const root = createRadixNode(''); - const child = createRadixNode('/users'); - child.store = 0; - root.inert = { [47]: child }; - - const fn = createRadixWalker(root, [], decoder, true); - const result = walk(fn, '/posts'); - - expect(result).toBeNull(); - }); - - it('should match with LCP-split tree', () => { - const root = createRadixNode(''); - const uNode = createRadixNode('/u'); - uNode.inert = {}; - - const sersNode = createRadixNode('sers'); - sersNode.store = 0; - uNode.inert['s'.charCodeAt(0)] = sersNode; - - const tilsNode = createRadixNode('tils'); - tilsNode.store = 1; - uNode.inert['t'.charCodeAt(0)] = tilsNode; - - root.inert = { [47]: uNode }; - - const fn = createRadixWalker(root, [], decoder, true); - - const r1 = walk(fn, '/users'); - expect(r1).not.toBeNull(); - expect(r1!.handlerIndex).toBe(0); - - const r2 = walk(fn, '/utils'); - expect(r2).not.toBeNull(); - expect(r2!.handlerIndex).toBe(1); - }); - - it('should match long labels (>=15 chars) using substring comparison', () => { - const root = createRadixNode(''); - const longLabel = '/very-long-label-exceeding-fifteen'; - const child = createRadixNode(longLabel); - child.store = 0; - root.inert = { [47]: child }; - - const fn = createRadixWalker(root, [], decoder, true); - const result = walk(fn, longLabel); - - expect(result).not.toBeNull(); - expect(result!.handlerIndex).toBe(0); - }); - - it('should fail long label when mismatch', () => { - const root = createRadixNode(''); - const longLabel = '/very-long-label-exceeding-fifteen'; - const child = createRadixNode(longLabel); - child.store = 0; - root.inert = { [47]: child }; - - const fn = createRadixWalker(root, [], decoder, true); - const result = walk(fn, '/very-long-label-exceeding-fiftXX'); - - expect(result).toBeNull(); - }); - }); - - describe('param matching', () => { - it('should match param and extract value', () => { - const root = createRadixNode(''); - const usersNode = createRadixNode('/users/'); - usersNode.params = createParamNode('id'); - usersNode.params.store = 0; - - root.inert = { [47]: usersNode }; - - const fn = createRadixWalker(root, [], decoder, true); - const result = walk(fn, '/users/42'); - - expect(result).not.toBeNull(); - expect(result!.handlerIndex).toBe(0); - expect(result!.params.id).toBe('42'); - }); - - it('should decode percent-encoded param values', () => { - const root = createRadixNode(''); - const usersNode = createRadixNode('/users/'); - usersNode.params = createParamNode('name'); - usersNode.params.store = 0; - - root.inert = { [47]: usersNode }; - - const fn = createRadixWalker(root, [], decoder, true); - const result = walk(fn, '/users/hello%20world'); - - expect(result).not.toBeNull(); - expect(result!.params.name).toBe('hello world'); - }); - - it('should not decode when decodeParams=false', () => { - const root = createRadixNode(''); - const usersNode = createRadixNode('/users/'); - usersNode.params = createParamNode('name'); - usersNode.params.store = 0; - - root.inert = { [47]: usersNode }; - - const fn = createRadixWalker(root, [], decoder, false); - const result = walk(fn, '/users/hello%20world'); - - expect(result).not.toBeNull(); - expect(result!.params.name).toBe('hello%20world'); - }); - - it('should match nested params', () => { - const root = createRadixNode(''); - const usersNode = createRadixNode('/users/'); - usersNode.params = createParamNode('userId'); - usersNode.params.inert = createRadixNode('/posts/'); - usersNode.params.inert.params = createParamNode('postId'); - usersNode.params.inert.params.store = 0; - - root.inert = { [47]: usersNode }; - - const fn = createRadixWalker(root, [], decoder, true); - const result = walk(fn, '/users/1/posts/2'); - - expect(result).not.toBeNull(); - expect(result!.handlerIndex).toBe(0); - expect(result!.params.userId).toBe('1'); - expect(result!.params.postId).toBe('2'); - }); - - it('should return null when terminal param has inert continuation but URL is exhausted', () => { - const root = createRadixNode(''); - const usersNode = createRadixNode('/users/'); - usersNode.params = createParamNode('id'); - // param has no store, only inert continuation - usersNode.params.inert = createRadixNode('/posts'); - usersNode.params.inert.store = 0; - - root.inert = { [47]: usersNode }; - - const fn = createRadixWalker(root, [], decoder, true); - // URL exhausts at param — inert continuation /posts can't match - const result = walk(fn, '/users/123'); - - expect(result).toBeNull(); - }); - - it('should return null when param value is empty (slash at pos)', () => { - const root = createRadixNode(''); - const usersNode = createRadixNode('/users/'); - usersNode.params = createParamNode('id'); - usersNode.params.store = 0; - - root.inert = { [47]: usersNode }; - - const fn = createRadixWalker(root, [], decoder, true); - // "/users/" — param pos starts at 7, slash at 7 → endIdx === pos → no match - const result = walk(fn, '/users/'); - - expect(result).toBeNull(); - }); - }); - - describe('pattern tester', () => { - it('should match param with passing tester', () => { - const root = createRadixNode(''); - const usersNode = createRadixNode('/users/'); - usersNode.params = createParamNode('id'); - usersNode.params.pattern = /^\d+$/; - usersNode.params.store = 0; - - root.inert = { [47]: usersNode }; - - const digitTester = (v: string) => /^\d+$/.test(v); - const fn = createRadixWalker(root, [digitTester], decoder, true); - const result = walk(fn, '/users/42'); - - expect(result).not.toBeNull(); - expect(result!.params.id).toBe('42'); - }); - - it('should reject param when tester returns false', () => { - const root = createRadixNode(''); - const usersNode = createRadixNode('/users/'); - usersNode.params = createParamNode('id'); - usersNode.params.pattern = /^\d+$/; - usersNode.params.store = 0; - - root.inert = { [47]: usersNode }; - - const digitTester = (v: string) => /^\d+$/.test(v); - const fn = createRadixWalker(root, [digitTester], decoder, true); - const result = walk(fn, '/users/abc'); - - expect(result).toBeNull(); - }); - - it('should set errorKind when tester throws', () => { - const root = createRadixNode(''); - const usersNode = createRadixNode('/users/'); - usersNode.params = createParamNode('id'); - usersNode.params.pattern = /^\d+$/; - usersNode.params.store = 0; - - root.inert = { [47]: usersNode }; - - const throwingTester = () => { throw new Error('regex timeout!'); }; - const fn = createRadixWalker(root, [throwingTester], decoder, true); - - const state = createMatchState(); - const result = fn('/users/123', 0, state); - - expect(result).toBe(false); - expect(state.errorKind).toBe('regex-timeout'); - expect(state.errorMessage).toBe('regex timeout!'); - }); - - it('should set errorMessage from non-Error throw', () => { - const root = createRadixNode(''); - const usersNode = createRadixNode('/users/'); - usersNode.params = createParamNode('id'); - usersNode.params.pattern = /^\d+$/; - usersNode.params.store = 0; - - root.inert = { [47]: usersNode }; - - const throwingTester = () => { throw 'string error'; }; - const fn = createRadixWalker(root, [throwingTester], decoder, true); - - const state = createMatchState(); - const result = fn('/users/123', 0, state); - - expect(result).toBe(false); - expect(state.errorKind).toBe('regex-timeout'); - expect(state.errorMessage).toBe('string error'); - }); - - it('should propagate error from static child when node has alternatives', () => { - const root = createRadixNode(''); - const prefixNode = createRadixNode('/items/'); - - // Static child that leads to a param with throwing tester - const staticChild = createRadixNode('special/'); - staticChild.params = createParamNode('id'); - staticChild.params.pattern = /^\d+$/; - staticChild.params.store = 0; - prefixNode.inert = { ['s'.charCodeAt(0)]: staticChild }; - - // Also has a param fallback → triggers slow path (backtracking) - prefixNode.params = createParamNode('name'); - prefixNode.params.store = 1; - - root.inert = { [47]: prefixNode }; - - const throwingTester = () => { throw new Error('timeout!'); }; - const fn = createRadixWalker(root, [throwingTester], decoder, true); - - const state = createMatchState(); - const result = fn('/items/special/abc', 0, state); - - expect(result).toBe(false); - expect(state.errorKind).toBe('regex-timeout'); - }); - }); - - describe('wildcard matching', () => { - it('should match star wildcard with value', () => { - const root = createRadixNode(''); - const filesNode = createRadixNode('/files/'); - filesNode.wildcardStore = 0; - filesNode.wildcardName = 'path'; - filesNode.wildcardOrigin = 'star'; - - root.inert = { [47]: filesNode }; - - const fn = createRadixWalker(root, [], decoder, true); - const result = walk(fn, '/files/a/b/c'); - - expect(result).not.toBeNull(); - expect(result!.params.path).toBe('a/b/c'); - }); - - it('should match star wildcard with empty value', () => { - const root = createRadixNode(''); - const filesNode = createRadixNode('/files'); - filesNode.wildcardStore = 0; - filesNode.wildcardName = 'path'; - filesNode.wildcardOrigin = 'star'; - - root.inert = { [47]: filesNode }; - - const fn = createRadixWalker(root, [], decoder, true); - const result = walk(fn, '/files'); - - expect(result).not.toBeNull(); - expect(result!.params.path).toBe(''); - }); - - it('should reject multi wildcard with empty value', () => { - const root = createRadixNode(''); - const filesNode = createRadixNode('/files'); - filesNode.wildcardStore = 0; - filesNode.wildcardName = 'path'; - filesNode.wildcardOrigin = 'multi'; - - root.inert = { [47]: filesNode }; - - const fn = createRadixWalker(root, [], decoder, true); - const result = walk(fn, '/files'); - - expect(result).toBeNull(); - }); - - it('should match star wildcard with empty via trailing-slash edge case', () => { - // Label "/files/", URL "/files" — trailing slash stripped by preNormalize - const root = createRadixNode(''); - const filesNode = createRadixNode('/files/'); - filesNode.wildcardStore = 0; - filesNode.wildcardName = 'path'; - filesNode.wildcardOrigin = 'star'; - - root.inert = { [47]: filesNode }; - - const fn = createRadixWalker(root, [], decoder, true); - const result = walk(fn, '/files'); - - expect(result).not.toBeNull(); - expect(result!.params.path).toBe(''); - }); - - it('should reject trailing-slash edge case for non-star wildcard', () => { - const root = createRadixNode(''); - const filesNode = createRadixNode('/files/'); - filesNode.wildcardStore = 0; - filesNode.wildcardName = 'path'; - filesNode.wildcardOrigin = 'multi'; - - root.inert = { [47]: filesNode }; - - const fn = createRadixWalker(root, [], decoder, true); - const result = walk(fn, '/files'); - - expect(result).toBeNull(); - }); - }); - - describe('priority', () => { - it('should prefer static children over param', () => { - const root = createRadixNode(''); - const prefixNode = createRadixNode('/items/'); - - // Static child - const adminNode = createRadixNode('admin'); - adminNode.store = 0; - prefixNode.inert = { ['a'.charCodeAt(0)]: adminNode }; - - // Param child - prefixNode.params = createParamNode('id'); - prefixNode.params.store = 1; - - root.inert = { [47]: prefixNode }; - - const fn = createRadixWalker(root, [], decoder, true); - - const staticResult = walk(fn, '/items/admin'); - expect(staticResult).not.toBeNull(); - expect(staticResult!.handlerIndex).toBe(0); - - const paramResult = walk(fn, '/items/xyz'); - expect(paramResult).not.toBeNull(); - expect(paramResult!.handlerIndex).toBe(1); - }); - - it('should prefer param over wildcard', () => { - const root = createRadixNode(''); - const prefixNode = createRadixNode('/files/'); - - // Param child - prefixNode.params = createParamNode('name'); - prefixNode.params.store = 0; - - // Wildcard - prefixNode.wildcardStore = 1; - prefixNode.wildcardName = 'rest'; - prefixNode.wildcardOrigin = 'star'; - - root.inert = { [47]: prefixNode }; - - const fn = createRadixWalker(root, [], decoder, true); - - const result = walk(fn, '/files/test'); - expect(result).not.toBeNull(); - // Param should match before wildcard for single-segment values - expect(result!.handlerIndex).toBe(0); - }); - - it('should backtrack from static child to param when static fails', () => { - const root = createRadixNode(''); - const prefixNode = createRadixNode('/api/'); - - // Static child that requires a deeper continuation - const staticChild = createRadixNode('admin/'); - staticChild.params = createParamNode('section'); - staticChild.params.store = 0; - prefixNode.inert = { ['a'.charCodeAt(0)]: staticChild }; - - // Param fallback - prefixNode.params = createParamNode('resource'); - prefixNode.params.store = 1; - - root.inert = { [47]: prefixNode }; - - const fn = createRadixWalker(root, [], decoder, true); - - // "admin" starts with 'a' so static child is tried first, - // but "admin" alone doesn't match "admin/" (needs more chars) - // So backtrack to param - const result = walk(fn, '/api/admin'); - expect(result).not.toBeNull(); - expect(result!.handlerIndex).toBe(1); - expect(result!.params.resource).toBe('admin'); - }); - }); -}); diff --git a/packages/router/src/matcher/radix-walk.ts b/packages/router/src/matcher/radix-walk.ts deleted file mode 100644 index c3cbfc0..0000000 --- a/packages/router/src/matcher/radix-walk.ts +++ /dev/null @@ -1,223 +0,0 @@ -import type { PatternTesterFn } from '../types'; -import type { RadixNode, ParamNode } from '../builder/radix-node'; -import type { MatchState } from './match-state'; -import type { DecoderFn } from '../processor/decoder'; -import type { RadixMatchFn } from './radix-matcher'; - -export function createRadixWalker( - root: RadixNode, - testers: Array, - decoder: DecoderFn, - decodeParams: boolean, -): RadixMatchFn { - function decode(raw: string): string { - return decodeParams && raw.indexOf('%') !== -1 ? decoder(raw) : raw; - } - - function matchNode( - initialNode: RadixNode, - url: string, - initialPos: number, - state: MatchState, - ): boolean { - let node = initialNode; - let pos = initialPos; - let skipCount = 0; - - for (;;) { - const label = node.part; - const labelLen = label.length; - - // ── Match edge label ── - if (labelLen > 0) { - const end = pos + labelLen; - - if (end > url.length) { - // Trailing-slash + star-wildcard edge case: - // Label "/files/", URL "/files" (trailing slash stripped by preNormalize). - // Match all chars except trailing '/', then yield empty wildcard. - if ( - end === url.length + 1 && - label.charCodeAt(labelLen - 1) === 47 && - node.wildcardStore !== null && - node.wildcardOrigin === 'star' - ) { - for (let i = skipCount; i < labelLen - 1; i++) { - if (url.charCodeAt(pos + i) !== label.charCodeAt(i)) return false; - } - - state.paramNames[state.paramCount] = node.wildcardName!; - state.paramValues[state.paramCount] = ''; - state.paramCount++; - state.handlerIndex = node.wildcardStore; - return true; - } - - return false; - } - - if (labelLen < 15) { - for (let i = skipCount; i < labelLen; i++) { - if (url.charCodeAt(pos + i) !== label.charCodeAt(i)) return false; - } - } else { - if (url.substring(pos, end) !== label) return false; - } - - pos = end; - } - - // ── Terminal check ── - if (pos === url.length) { - if (node.store !== null) { - state.handlerIndex = node.store; - return true; - } - - if (node.wildcardStore !== null && node.wildcardOrigin === 'star') { - state.paramNames[state.paramCount] = node.wildcardName!; - state.paramValues[state.paramCount] = ''; - state.paramCount++; - state.handlerIndex = node.wildcardStore; - return true; - } - - return false; - } - - // ── Static children ── - if (node.inert !== null) { - const ch = url.charCodeAt(pos); - const child = node.inert[ch]; - - if (child !== undefined) { - // Fast path: no params/wildcard → iterate (no backtracking needed) - if (node.params === null && node.wildcardStore === null) { - node = child; - skipCount = 1; - continue; - } - - // Slow path: has alternatives → must recurse for backtracking - if (matchNode(child, url, pos, state)) return true; - if (state.errorKind) return false; - } - } - - // ── Param children ── - if (node.params !== null) { - if (matchParams(node.params, url, pos, state)) return true; - if (state.errorKind) return false; - } - - // ── Wildcard ── - if (node.wildcardStore !== null) { - const suffix = url.substring(pos); - - if (node.wildcardOrigin === 'multi' && suffix.length === 0) return false; - - state.paramNames[state.paramCount] = node.wildcardName!; - state.paramValues[state.paramCount] = suffix; - state.paramCount++; - state.handlerIndex = node.wildcardStore; - return true; - } - - return false; - } - } - - function matchParams( - paramHead: ParamNode, - url: string, - pos: number, - state: MatchState, - ): boolean { - const slashIdx = url.indexOf('/', pos); - const endIdx = slashIdx === -1 ? url.length : slashIdx; - - if (endIdx === pos) return false; - - let param: ParamNode | null = paramHead; - let testerIdx = 0; - - while (param !== null) { - const tester = param.pattern !== null ? testers[testerIdx++] : undefined; - let value: string | undefined; - - // Eager decode only when tester needs the value - if (tester !== undefined) { - value = decode(url.substring(pos, endIdx)); - - try { - if (!tester(value)) { - param = param.next; - continue; - } - } catch (e) { - state.errorKind = 'regex-timeout'; - state.errorMessage = e instanceof Error ? e.message : String(e); - return false; - } - } - - const savedParamCount = state.paramCount; - - if (endIdx === url.length) { - // Terminal param - if (param.store !== null) { - if (value === undefined) value = decode(url.substring(pos, endIdx)); - - state.paramNames[state.paramCount] = param.name; - state.paramValues[state.paramCount] = value; - state.paramCount++; - state.handlerIndex = param.store; - return true; - } - - // Try continuation (e.g., wildcard child) - if (param.inert !== null) { - if (matchNode(param.inert, url, endIdx, state)) { - if (value === undefined) value = decode(url.substring(pos, endIdx)); - - state.paramNames[savedParamCount] = param.name; - state.paramValues[savedParamCount] = value; - state.paramCount++; - return true; - } - - if (state.errorKind) return false; - state.paramCount = savedParamCount; - } - } else if (param.inert !== null) { - // More URL to match — recurse into continuation - if (matchNode(param.inert, url, endIdx, state)) { - if (value === undefined) value = decode(url.substring(pos, endIdx)); - - // Insert at saved position (before child params) - for (let j = state.paramCount; j > savedParamCount; j--) { - state.paramNames[j] = state.paramNames[j - 1]!; - state.paramValues[j] = state.paramValues[j - 1]!; - } - - state.paramNames[savedParamCount] = param.name; - state.paramValues[savedParamCount] = value; - state.paramCount++; - return true; - } - - if (state.errorKind) return false; - state.paramCount = savedParamCount; - } - - param = param.next; - } - - return false; - } - - // Entry point — returned as the RadixMatchFn - return function walk(url: string, startIndex: number, state: MatchState): boolean { - return matchNode(root, url, startIndex, state); - }; -} diff --git a/packages/router/src/matcher/segment-walk.spec.ts b/packages/router/src/matcher/segment-walk.spec.ts new file mode 100644 index 0000000..e44384c --- /dev/null +++ b/packages/router/src/matcher/segment-walk.spec.ts @@ -0,0 +1,135 @@ +import { describe, expect, it } from 'bun:test'; + +import type { SegmentNode } from '../tree'; + +import { WildcardOrigin, createSegmentNode, setTenantFactor } from '../tree'; +import { createMatchState } from './match-state'; +import { createSegmentWalker } from './segment-walk'; + +const identityDecoder = (s: string) => s; + +function leafWithStore(store: number): SegmentNode { + const node = createSegmentNode(); + node.store = store; + return node; +} + +function manyStaticChildren(count: number, makeChild: (i: number) => SegmentNode): SegmentNode { + const root = createSegmentNode(); + root.staticChildren = Object.create(null) as Record; + for (let i = 0; i < count; i++) { + root.staticChildren[`k${i}`] = makeChild(i); + } + return root; +} + +describe('createSegmentWalker — factored tier (root has stored TenantFactor)', () => { + it('uses the factor descriptor to dispatch by first segment + walk shared subtree', () => { + const root = createSegmentNode(); + const shared = leafWithStore(0); + const keyToTerminal = new Map([ + ['tenant-0', 100], + ['tenant-1', 101], + ]); + setTenantFactor(root, { keyToTerminal, sharedNext: shared }); + + const walker = createSegmentWalker(root, identityDecoder, createMatchState(2)); + const state = createMatchState(2); + expect(walker('/tenant-0', state)).toBe(true); + expect(state.handlerIndex).toBe(100); + + const state2 = createMatchState(2); + expect(walker('/tenant-1', state2)).toBe(true); + expect(state2.handlerIndex).toBe(101); + + const state3 = createMatchState(2); + expect(walker('/tenant-9999', state3)).toBe(false); + }); +}); + +describe('createSegmentWalker — static-prefix wildcard codegen tier', () => { + it('returns the compiled walker for a //*tail topology', () => { + const root = createSegmentNode(); + root.staticChildren = Object.create(null) as Record; + const child = createSegmentNode(); + child.wildcardStore = 7; + child.wildcardName = 'path'; + child.wildcardOrigin = WildcardOrigin.Star; + root.staticChildren['files'] = child; + + const walker = createSegmentWalker(root, identityDecoder, createMatchState(2)); + expect(walker.name).toBe('compiledWildWalk'); + + const state = createMatchState(2); + expect(walker('/files/a/b', state)).toBe(true); + expect(state.handlerIndex).toBe(7); + }); +}); + +describe('createSegmentWalker — iterative tier (non-ambiguous, exceeds codegen budget)', () => { + it('falls back to the iterative walker for wide non-ambiguous fanout', () => { + const root = manyStaticChildren(400, i => leafWithStore(i + 1000)); + + const walker = createSegmentWalker(root, identityDecoder, createMatchState(2)); + expect(walker.name).toBe('walk'); + + const state = createMatchState(2); + expect(walker('/k0', state)).toBe(true); + expect(state.handlerIndex).toBe(1000); + + const state2 = createMatchState(2); + expect(walker('/k399', state2)).toBe(true); + expect(state2.handlerIndex).toBe(1399); + }); +}); + +describe('createSegmentWalker — recursive tier (ambiguous tree)', () => { + it('falls back to the recursive walker for trees that need backtracking', () => { + const root = createSegmentNode(); + root.staticChildren = Object.create(null) as Record; + const apiStatic = createSegmentNode(); + apiStatic.singleChildKey = 'v1'; + const v1Node = createSegmentNode(); + v1Node.store = 1; + apiStatic.singleChildNext = v1Node; + root.staticChildren['api'] = apiStatic; + + root.paramChild = { + name: 'ver', + tester: null, + patternSource: null, + ownerRouteID: 0, + next: (() => { + const n = createSegmentNode(); + n.singleChildKey = 'users'; + const users = leafWithStore(2); + n.singleChildNext = users; + return n; + })(), + nextSibling: null, + }; + + const walker = createSegmentWalker(root, identityDecoder, createMatchState(4)); + expect(walker.name).toBe('walk'); + }); +}); + +describe('createSegmentWalker — segment-tree codegen tier (small mixed tree)', () => { + it('returns the compiledSegmentWalk codegen for a small param-bearing tree', () => { + const root = createSegmentNode(); + root.singleChildKey = 'users'; + const usersNode = createSegmentNode(); + usersNode.paramChild = { + name: 'id', + tester: null, + patternSource: null, + ownerRouteID: 0, + next: leafWithStore(5), + nextSibling: null, + }; + root.singleChildNext = usersNode; + + const walker = createSegmentWalker(root, identityDecoder, createMatchState(2)); + expect(walker.name).toBe('compiledSegmentWalk'); + }); +}); diff --git a/packages/router/src/matcher/segment-walk.ts b/packages/router/src/matcher/segment-walk.ts new file mode 100644 index 0000000..fe1129c --- /dev/null +++ b/packages/router/src/matcher/segment-walk.ts @@ -0,0 +1,66 @@ +import type { SegmentNode } from '../tree'; +import type { DecoderFn, MatchFn, MatchState } from '../types'; + +import { collectWarmupPaths, compileSegmentTree, tryCodegenStaticPrefixWildcard, WARMUP_ITERATIONS } from '../codegen'; +import { compactSegmentTree, getTenantFactor, hasAmbiguousNode, TESTER_PASS } from '../tree'; +import { createFactoredWalker } from './walkers/factored'; +import { createIterativeWalker } from './walkers/iterative'; +import { + createMultiPrefixFactoredWalker, + createPrefixedFactoredWalker, + tryDetectMultiPrefixFactor, + tryDetectPrefixedFactor, +} from './walkers/prefix-factor'; +import { createRecursiveWalker } from './walkers/recursive'; + +function warmupCompiledWalker(walker: MatchFn, root: SegmentNode, state: MatchState): void { + const paths = collectWarmupPaths(root); + for (let it = 0; it < WARMUP_ITERATIONS; it++) { + for (const p of paths) { + walker(p, state); + } + } +} + +export function createSegmentWalker(root: SegmentNode, decoder: DecoderFn, warmupState: MatchState): MatchFn { + const factorAtEntry = getTenantFactor(root); + if (factorAtEntry !== undefined) { + return createFactoredWalker(decoder, factorAtEntry.keyToTerminal, factorAtEntry.sharedNext); + } + + const prefixedFactor = tryDetectPrefixedFactor(root); + if (prefixedFactor !== null) { + return createPrefixedFactoredWalker( + decoder, + prefixedFactor.prefixSegs, + prefixedFactor.factor.keyToTerminal, + prefixedFactor.factor.sharedNext, + ); + } + + const multiPrefixed = tryDetectMultiPrefixFactor(root); + if (multiPrefixed !== null) { + return createMultiPrefixFactoredWalker(decoder, multiPrefixed); + } + + const compiledWild = tryCodegenStaticPrefixWildcard(root); + if (compiledWild !== null) { + warmupCompiledWalker(compiledWild, root, warmupState); + return compiledWild; + } + + const compiledFullPackage = compileSegmentTree(root); + if (compiledFullPackage !== null) { + const compiled = compiledFullPackage.factory(compiledFullPackage.testers, TESTER_PASS, decoder); + warmupCompiledWalker(compiled, root, warmupState); + return compiled; + } + + compactSegmentTree(root); + + if (!hasAmbiguousNode(root)) { + return createIterativeWalker(root, decoder); + } + + return createRecursiveWalker(root, decoder); +} diff --git a/packages/router/src/matcher/walkers/factored.spec.ts b/packages/router/src/matcher/walkers/factored.spec.ts new file mode 100644 index 0000000..efe8e72 --- /dev/null +++ b/packages/router/src/matcher/walkers/factored.spec.ts @@ -0,0 +1,23 @@ +import { describe, expect, it } from 'bun:test'; + +import { createMatchState } from '../match-state'; +import { walkSharedSubtree } from './factored'; +import { STORE_NODE } from './test-fixtures'; + +const STORE = STORE_NODE; + +describe('walkSharedSubtree', () => { + it('returns true and writes storeOverride when descending to a store-leaf', () => { + const state = createMatchState(2); + const decoder = (s: string) => s; + const ok = walkSharedSubtree(STORE, '/x', 2, 2, 99, decoder, state); + expect(ok).toBe(true); + expect(state.handlerIndex).toBe(99); + }); + + it('returns false when the URL has remaining characters but the subtree has no static/param child', () => { + const state = createMatchState(2); + const decoder = (s: string) => s; + expect(walkSharedSubtree(STORE, '/x/y', 1, 4, 99, decoder, state)).toBe(false); + }); +}); diff --git a/packages/router/src/matcher/walkers/factored.ts b/packages/router/src/matcher/walkers/factored.ts new file mode 100644 index 0000000..b7d7fa1 --- /dev/null +++ b/packages/router/src/matcher/walkers/factored.ts @@ -0,0 +1,75 @@ +import type { SegmentNode } from '../../tree'; +import type { DecoderFn, MatchFn, MatchState } from '../../types'; + +import { TESTER_PASS } from '../../tree'; + +export function createFactoredWalker(decoder: DecoderFn, keyToTerminal: Map, sharedNext: SegmentNode): MatchFn { + return function walk(url: string, state: MatchState): boolean { + state.paramCount = 0; + const len = url.length; + + let slash1 = 1; + while (slash1 < len && url.charCodeAt(slash1) !== 47) { + slash1++; + } + const firstSeg = slash1 === len ? url.substring(1) : url.substring(1, slash1); + const looked = keyToTerminal.get(firstSeg); + if (looked === undefined) { + return false; + } + + return walkSharedSubtree(sharedNext, url, slash1 === len ? len : slash1 + 1, len, looked, decoder, state); + }; +} + +export function walkSharedSubtree( + sharedNext: SegmentNode, + url: string, + initialPos: number, + len: number, + storeOverride: number, + decoder: DecoderFn, + state: MatchState, +): boolean { + let node = sharedNext; + let pos = initialPos; + + while (pos < len) { + let end = pos; + while (end < len && url.charCodeAt(end) !== 47) { + end++; + } + const segLen = end - pos; + + const sck = node.singleChildKey; + if (sck !== null && node.singleChildNext !== null && sck.length === segLen && url.startsWith(sck, pos)) { + node = node.singleChildNext; + pos = end === len ? len : end + 1; + continue; + } + + if (node.paramChild !== null && segLen > 0) { + if (node.paramChild.tester !== null) { + const decoded = decoder(url.substring(pos, end)); + if (node.paramChild.tester(decoded) !== TESTER_PASS) { + return false; + } + } + const pc = state.paramCount * 2; + state.paramOffsets[pc] = pos; + state.paramOffsets[pc + 1] = end; + state.paramCount++; + node = node.paramChild.next; + pos = end === len ? len : end + 1; + continue; + } + + return false; + } + + if (node.store !== null) { + state.handlerIndex = storeOverride; + return true; + } + return false; +} diff --git a/packages/router/src/matcher/walkers/iterative.spec.ts b/packages/router/src/matcher/walkers/iterative.spec.ts new file mode 100644 index 0000000..710e7c1 --- /dev/null +++ b/packages/router/src/matcher/walkers/iterative.spec.ts @@ -0,0 +1,61 @@ +import { describe, expect, it } from 'bun:test'; + +import type { SegmentNode } from '../../tree'; + +import { createMatchState } from '../match-state'; +import { consumeStaticPrefix, matchTerminalAtNode } from './iterative'; +import { MULTI_WILDCARD_NODE, STAR_WILDCARD_NODE, STORE_NODE } from './test-fixtures'; + +const STORE = STORE_NODE; +const STAR_WILDCARD = STAR_WILDCARD_NODE; +const MULTI_WILDCARD = MULTI_WILDCARD_NODE; + +describe('consumeStaticPrefix', () => { + it('advances `pos` past every matched segment', () => { + expect(consumeStaticPrefix(['a', 'b'], '/a/b/x', 1, 6)).toBe(5); + }); + + it('returns -1 when a segment exceeds the remaining URL length', () => { + expect(consumeStaticPrefix(['users'], '/u', 1, 2)).toBe(-1); + }); + + it('returns -1 when a literal segment fails to match', () => { + expect(consumeStaticPrefix(['users'], '/admin/x', 1, 8)).toBe(-1); + }); + + it('returns -1 when the next char after a segment is not `/`', () => { + expect(consumeStaticPrefix(['user'], '/userid', 1, 7)).toBe(-1); + }); + + it('returns the URL length when the prefix consumes the tail exactly', () => { + expect(consumeStaticPrefix(['x'], '/x', 1, 2)).toBe(2); + }); +}); + +describe('matchTerminalAtNode', () => { + it('returns true for a store-bearing node and writes the handler index', () => { + const state = createMatchState(2); + expect(matchTerminalAtNode(STORE, 5, state)).toBe(true); + expect(state.handlerIndex).toBe(7); + }); + + it('returns true for a star-wildcard node and captures an empty tail', () => { + const state = createMatchState(2); + expect(matchTerminalAtNode(STAR_WILDCARD, 4, state)).toBe(true); + expect(state.handlerIndex).toBe(9); + expect(state.paramOffsets[0]).toBe(4); + expect(state.paramOffsets[1]).toBe(4); + expect(state.paramCount).toBe(1); + }); + + it('returns false for a multi-wildcard at end of URL (multi requires non-empty tail)', () => { + const state = createMatchState(2); + expect(matchTerminalAtNode(MULTI_WILDCARD, 4, state)).toBe(false); + }); + + it('returns false for an empty leaf', () => { + const state = createMatchState(2); + const empty: SegmentNode = { ...STORE, store: null }; + expect(matchTerminalAtNode(empty, 1, state)).toBe(false); + }); +}); diff --git a/packages/router/src/matcher/walkers/iterative.ts b/packages/router/src/matcher/walkers/iterative.ts new file mode 100644 index 0000000..6eb390c --- /dev/null +++ b/packages/router/src/matcher/walkers/iterative.ts @@ -0,0 +1,116 @@ +import type { SegmentNode } from '../../tree'; +import type { DecoderFn, MatchFn, MatchState } from '../../types'; + +import { TESTER_PASS, WildcardOrigin } from '../../tree'; + +export function createIterativeWalker(root: SegmentNode, decoder: DecoderFn): MatchFn { + return function walk(url: string, state: MatchState): boolean { + state.paramCount = 0; + const len = url.length; + + let node = root; + let pos = 1; + + while (pos < len) { + if (node.staticPrefix !== null) { + const newPos = consumeStaticPrefix(node.staticPrefix, url, pos, len); + if (newPos < 0) { + return false; + } + pos = newPos; + if (pos >= len) { + break; + } + } + + let end = pos; + while (end < len && url.charCodeAt(end) !== 47) { + end++; + } + const segLen = end - pos; + + const sck = node.singleChildKey; + if (sck !== null && node.singleChildNext !== null && sck.length === segLen && url.startsWith(sck, pos)) { + node = node.singleChildNext; + pos = end === len ? len : end + 1; + continue; + } + if (node.staticChildren !== null) { + const seg = url.substring(pos, end); + const child = node.staticChildren[seg]; + if (child !== undefined) { + node = child; + pos = end === len ? len : end + 1; + continue; + } + } + + if (node.paramChild !== null && segLen > 0) { + if (node.paramChild.tester !== null) { + const decoded = decoder(url.substring(pos, end)); + if (node.paramChild.tester(decoded) !== TESTER_PASS) { + return false; + } + } + const pc = state.paramCount * 2; + state.paramOffsets[pc] = pos; + state.paramOffsets[pc + 1] = end; + state.paramCount++; + node = node.paramChild.next; + pos = end === len ? len : end + 1; + continue; + } + + if (node.wildcardStore !== null) { + if (node.wildcardOrigin === WildcardOrigin.Multi && pos >= len) { + return false; + } + const pc = state.paramCount * 2; + state.paramOffsets[pc] = pos; + state.paramOffsets[pc + 1] = len; + state.paramCount++; + state.handlerIndex = node.wildcardStore; + return true; + } + + return false; + } + + return matchTerminalAtNode(node, len, state); + }; +} + +export function consumeStaticPrefix(sp: ReadonlyArray, url: string, pos: number, len: number): number { + for (let i = 0; i < sp.length; i++) { + const seg = sp[i]!; + const segLen = seg.length; + const after = pos + segLen; + if (after > len) { + return -1; + } + if (!url.startsWith(seg, pos)) { + return -1; + } + if (after < len && url.charCodeAt(after) !== 47) { + return -1; + } + pos = after === len ? len : after + 1; + } + return pos; +} + +export function matchTerminalAtNode(node: SegmentNode, len: number, state: MatchState): boolean { + if (node.store !== null) { + state.handlerIndex = node.store; + return true; + } + if (node.wildcardStore !== null && node.wildcardOrigin === WildcardOrigin.Star) { + const pc = state.paramCount * 2; + state.paramOffsets[pc] = len; + state.paramOffsets[pc + 1] = len; + state.paramCount++; + state.handlerIndex = node.wildcardStore; + return true; + } + return false; +} diff --git a/packages/router/src/matcher/walkers/prefix-factor.spec.ts b/packages/router/src/matcher/walkers/prefix-factor.spec.ts new file mode 100644 index 0000000..00b66f3 --- /dev/null +++ b/packages/router/src/matcher/walkers/prefix-factor.spec.ts @@ -0,0 +1,35 @@ +import { describe, expect, it } from 'bun:test'; + +import { consumeFixedPrefix, scanSegmentEnd } from './prefix-factor'; + +describe('consumeFixedPrefix', () => { + it('returns the position after every prefix segment is consumed', () => { + expect(consumeFixedPrefix(['users'], 1, '/users/42', 1, 9)).toBe(7); + }); + + it('returns -1 on prefix mismatch', () => { + expect(consumeFixedPrefix(['users'], 1, '/admin', 1, 6)).toBe(-1); + }); + + it('returns -1 when a prefix segment overruns the URL', () => { + expect(consumeFixedPrefix(['users'], 1, '/u', 1, 2)).toBe(-1); + }); + + it('handles a zero-length prefix array as a no-op', () => { + expect(consumeFixedPrefix([], 0, '/x', 5, 2)).toBe(5); + }); +}); + +describe('scanSegmentEnd', () => { + it('returns the index of the next `/`', () => { + expect(scanSegmentEnd('/a/b/c', 1, 6)).toBe(2); + }); + + it('returns `len` when no `/` is found before end-of-URL', () => { + expect(scanSegmentEnd('/abc', 1, 4)).toBe(4); + }); + + it('returns `pos` for an empty segment when `pos` already points at `/`', () => { + expect(scanSegmentEnd('/a//b', 2, 5)).toBe(2); + }); +}); diff --git a/packages/router/src/matcher/walkers/prefix-factor.ts b/packages/router/src/matcher/walkers/prefix-factor.ts new file mode 100644 index 0000000..a9cf753 --- /dev/null +++ b/packages/router/src/matcher/walkers/prefix-factor.ts @@ -0,0 +1,254 @@ +import type { SegmentNode, TenantFactor } from '../../tree'; +import type { DecoderFn, MatchFn, MatchState } from '../../types'; + +import { detectTenantFactor, setTenantFactor } from '../../tree'; +import { walkSharedSubtree } from './factored'; + +function detectPrefixedFactorDry( + root: SegmentNode, +): { prefixSegs: string[]; factor: TenantFactor; deepNode: SegmentNode } | null { + const prefixSegs: string[] = []; + let cur: SegmentNode = root; + + for (let depth = 0; depth < 32; depth++) { + if (cur.paramChild !== null || cur.wildcardStore !== null || cur.store !== null || cur.staticPrefix !== null) { + break; + } + + let onlyKey: string | null = null; + let onlyChild: SegmentNode | null = null; + let count = 0; + + if (cur.singleChildKey !== null && cur.singleChildNext !== null && cur.staticChildren === null) { + onlyKey = cur.singleChildKey; + onlyChild = cur.singleChildNext; + count = 1; + } else if (cur.staticChildren !== null) { + for (const k in cur.staticChildren) { + count++; + if (count > 1) { + break; + } + onlyKey = k; + onlyChild = cur.staticChildren[k]!; + } + } + + if (count !== 1 || onlyKey === null || onlyChild === null) { + break; + } + + prefixSegs.push(onlyKey); + cur = onlyChild; + } + + if (prefixSegs.length === 0) { + return null; + } + + const factor = detectTenantFactor(cur); + if (factor === null) { + return null; + } + + return { prefixSegs, factor, deepNode: cur }; +} + +function applyPrefixedFactor(deepNode: SegmentNode, factor: TenantFactor): void { + setTenantFactor(deepNode, factor); + deepNode.staticChildren = null; + deepNode.singleChildKey = null; + deepNode.singleChildNext = null; +} + +function tryDetectPrefixedFactor(root: SegmentNode): { prefixSegs: string[]; factor: TenantFactor } | null { + const dry = detectPrefixedFactorDry(root); + if (dry === null) { + return null; + } + applyPrefixedFactor(dry.deepNode, dry.factor); + return { prefixSegs: dry.prefixSegs, factor: dry.factor }; +} + +function createPrefixedFactoredWalker( + decoder: DecoderFn, + prefixSegs: string[], + keyToTerminal: Map, + sharedNext: SegmentNode, +): MatchFn { + const prefixCount = prefixSegs.length; + return function walk(url: string, state: MatchState): boolean { + state.paramCount = 0; + const len = url.length; + + const afterPrefix = consumeFixedPrefix(prefixSegs, prefixCount, url, 1, len); + if (afterPrefix < 0 || afterPrefix >= len) { + return false; + } + + const keyEnd = scanSegmentEnd(url, afterPrefix, len); + const seg = keyEnd === afterPrefix ? '' : url.substring(afterPrefix, keyEnd); + const looked = keyToTerminal.get(seg); + if (looked === undefined) { + return false; + } + + return walkSharedSubtree(sharedNext, url, keyEnd === len ? len : keyEnd + 1, len, looked, decoder, state); + }; +} + +interface PrefixedFactorEntry { + prefixSegs: string[]; + keyToTerminal: Map; + sharedNext: SegmentNode; +} + +function tryDetectMultiPrefixFactor(root: SegmentNode): Map | null { + if (root.paramChild !== null || root.wildcardStore !== null || root.store !== null || root.staticPrefix !== null) { + return null; + } + + const childMap = root.staticChildren; + if (childMap === null) { + return null; + } + + let keyCount = 0; + for (const _k in childMap) { + keyCount++; + if (keyCount > 1) { + break; + } + } + if (keyCount < 2) { + return null; + } + + type Pending = + | { type: 'prefixed'; key: string; deepNode: SegmentNode; factor: TenantFactor; prefixSegs: string[] } + | { type: 'direct'; key: string; child: SegmentNode; factor: TenantFactor }; + const pending: Pending[] = []; + for (const k in childMap) { + const child = childMap[k]!; + const dryPrefixed = detectPrefixedFactorDry(child); + if (dryPrefixed !== null) { + pending.push({ + type: 'prefixed', + key: k, + deepNode: dryPrefixed.deepNode, + factor: dryPrefixed.factor, + prefixSegs: dryPrefixed.prefixSegs, + }); + continue; + } + const direct = detectTenantFactor(child); + if (direct !== null) { + pending.push({ type: 'direct', key: k, child, factor: direct }); + continue; + } + return null; + } + + const out = new Map(); + for (const p of pending) { + if (p.type === 'prefixed') { + applyPrefixedFactor(p.deepNode, p.factor); + out.set(p.key, { + prefixSegs: p.prefixSegs, + keyToTerminal: p.factor.keyToTerminal, + sharedNext: p.factor.sharedNext, + }); + } else { + applyPrefixedFactor(p.child, p.factor); + out.set(p.key, { + prefixSegs: [], + keyToTerminal: p.factor.keyToTerminal, + sharedNext: p.factor.sharedNext, + }); + } + } + return out; +} + +function createMultiPrefixFactoredWalker(decoder: DecoderFn, childMap: Map): MatchFn { + return function walk(url: string, state: MatchState): boolean { + state.paramCount = 0; + const len = url.length; + + if (url === '/') { + return false; + } + + let slash1 = 1; + while (slash1 < len && url.charCodeAt(slash1) !== 47) { + slash1++; + } + const firstSeg = slash1 === len ? url.substring(1) : url.substring(1, slash1); + const entry = childMap.get(firstSeg); + if (entry === undefined) { + return false; + } + + const afterPrefix = consumeFixedPrefix( + entry.prefixSegs, + entry.prefixSegs.length, + url, + slash1 === len ? len : slash1 + 1, + len, + ); + if (afterPrefix < 0 || afterPrefix >= len) { + return false; + } + + const keyEnd = scanSegmentEnd(url, afterPrefix, len); + const seg = keyEnd === afterPrefix ? '' : url.substring(afterPrefix, keyEnd); + const looked = entry.keyToTerminal.get(seg); + if (looked === undefined) { + return false; + } + + return walkSharedSubtree(entry.sharedNext, url, keyEnd === len ? len : keyEnd + 1, len, looked, decoder, state); + }; +} + +function consumeFixedPrefix( + prefixSegs: ReadonlyArray, + prefixCount: number, + url: string, + pos: number, + len: number, +): number { + for (let i = 0; i < prefixCount; i++) { + const seg = prefixSegs[i]!; + const segLen = seg.length; + const after = pos + segLen; + if (after > len) { + return -1; + } + if (!url.startsWith(seg, pos)) { + return -1; + } + if (after < len && url.charCodeAt(after) !== 47) { + return -1; + } + pos = after === len ? len : after + 1; + } + return pos; +} + +function scanSegmentEnd(url: string, pos: number, len: number): number { + let end = pos; + while (end < len && url.charCodeAt(end) !== 47) { + end++; + } + return end; +} + +export { + consumeFixedPrefix, + createMultiPrefixFactoredWalker, + createPrefixedFactoredWalker, + scanSegmentEnd, + tryDetectMultiPrefixFactor, + tryDetectPrefixedFactor, +}; diff --git a/packages/router/src/matcher/walkers/recursive.spec.ts b/packages/router/src/matcher/walkers/recursive.spec.ts new file mode 100644 index 0000000..68abaa9 --- /dev/null +++ b/packages/router/src/matcher/walkers/recursive.spec.ts @@ -0,0 +1,38 @@ +import { describe, expect, it } from 'bun:test'; + +import { createMatchState } from '../match-state'; +import { consumeStaticPrefixRec, tryWildcardCapture } from './recursive'; +import { MULTI_WILDCARD_NODE, STAR_WILDCARD_NODE, STORE_NODE } from './test-fixtures'; + +const STORE = STORE_NODE; +const STAR_WILDCARD = STAR_WILDCARD_NODE; +const MULTI_WILDCARD = MULTI_WILDCARD_NODE; + +describe('consumeStaticPrefixRec', () => { + it('returns the new position when the prefix matches', () => { + expect(consumeStaticPrefixRec(['a'], '/a', 1, 2)).toBe(2); + }); + + it('returns -1 when the literal segment differs', () => { + expect(consumeStaticPrefixRec(['a'], '/b', 1, 2)).toBe(-1); + }); +}); + +describe('tryWildcardCapture', () => { + it('writes the wildcard offsets and returns true for a star wildcard', () => { + const state = createMatchState(2); + expect(tryWildcardCapture(STAR_WILDCARD, 5, 12, state)).toBe(true); + expect(state.paramOffsets[0]).toBe(5); + expect(state.paramOffsets[1]).toBe(12); + }); + + it('returns false for a node without wildcardStore', () => { + const state = createMatchState(2); + expect(tryWildcardCapture(STORE, 0, 0, state)).toBe(false); + }); + + it('rejects multi-wildcard when pos is already at end of URL', () => { + const state = createMatchState(2); + expect(tryWildcardCapture(MULTI_WILDCARD, 5, 5, state)).toBe(false); + }); +}); diff --git a/packages/router/src/matcher/walkers/recursive.ts b/packages/router/src/matcher/walkers/recursive.ts new file mode 100644 index 0000000..1c363fd --- /dev/null +++ b/packages/router/src/matcher/walkers/recursive.ts @@ -0,0 +1,158 @@ +import type { ParamSegment, SegmentNode } from '../../tree'; +import type { DecoderFn, MatchFn, MatchState } from '../../types'; + +import { TESTER_PASS, WildcardOrigin } from '../../tree'; + +function createRecursiveWalker(root: SegmentNode, decoder: DecoderFn): MatchFn { + function tryMatchParam( + param: ParamSegment, + path: string, + start: number, + end: number, + state: MatchState, + decoder: DecoderFn, + ): boolean { + if (param.tester !== null) { + const val = decoder(path.substring(start, end)); + if (param.tester(val) !== TESTER_PASS) { + return false; + } + } + + const mark = state.paramCount; + const pc = mark * 2; + state.paramOffsets[pc] = start; + state.paramOffsets[pc + 1] = end; + state.paramCount++; + + if (match(param.next, path, end === path.length ? end : end + 1, state, decoder)) { + return true; + } + + state.paramCount = mark; + return false; + } + + function match(node: SegmentNode, path: string, pos: number, state: MatchState, decoder: DecoderFn): boolean { + const len = path.length; + + if (node.staticPrefix !== null) { + const newPos = consumeStaticPrefixRec(node.staticPrefix, path, pos, len); + if (newPos < 0) { + return false; + } + pos = newPos; + } + + if (pos >= len) { + return matchTerminalAtNode(node, len, state); + } + + let end = pos; + while (end < len && path.charCodeAt(end) !== 47) { + end++; + } + const segLen = end - pos; + + if (tryStaticDescent(node, path, pos, end, segLen, len, state, decoder)) { + return true; + } + + const head = node.paramChild; + if (head !== null && segLen > 0) { + if (tryMatchParam(head, path, pos, end, state, decoder)) { + return true; + } + let p: ParamSegment | null = head.nextSibling; + while (p !== null) { + if (tryMatchParam(p, path, pos, end, state, decoder)) { + return true; + } + p = p.nextSibling; + } + } + + return tryWildcardCapture(node, pos, len, state); + } + + function tryStaticDescent( + node: SegmentNode, + path: string, + pos: number, + end: number, + segLen: number, + len: number, + state: MatchState, + decoder: DecoderFn, + ): boolean { + const sck = node.singleChildKey; + if (sck !== null && node.singleChildNext !== null && sck.length === segLen && path.startsWith(sck, pos)) { + return match(node.singleChildNext, path, end === len ? len : end + 1, state, decoder); + } + if (node.staticChildren !== null) { + const seg = path.substring(pos, end); + const child = node.staticChildren[seg]; + if (child !== undefined) { + return match(child, path, end === len ? len : end + 1, state, decoder); + } + } + return false; + } + + return function walk(url: string, state: MatchState): boolean { + state.paramCount = 0; + return match(root, url, 1, state, decoder); + }; +} + +function matchTerminalAtNode(node: SegmentNode, len: number, state: MatchState): boolean { + if (node.store !== null) { + state.handlerIndex = node.store; + return true; + } + if (node.wildcardStore !== null && node.wildcardOrigin === WildcardOrigin.Star) { + const pc = state.paramCount * 2; + state.paramOffsets[pc] = len; + state.paramOffsets[pc + 1] = len; + state.paramCount++; + state.handlerIndex = node.wildcardStore; + return true; + } + return false; +} + +export function consumeStaticPrefixRec(sp: ReadonlyArray, path: string, pos: number, len: number): number { + for (let i = 0; i < sp.length; i++) { + const seg = sp[i]!; + const segLen = seg.length; + const after = pos + segLen; + if (after > len) { + return -1; + } + if (!path.startsWith(seg, pos)) { + return -1; + } + if (after < len && path.charCodeAt(after) !== 47) { + return -1; + } + pos = after === len ? len : after + 1; + } + return pos; +} + +export function tryWildcardCapture(node: SegmentNode, pos: number, len: number, state: MatchState): boolean { + if (node.wildcardStore === null) { + return false; + } + if (node.wildcardOrigin === WildcardOrigin.Multi && pos >= len) { + return false; + } + const pc = state.paramCount * 2; + state.paramOffsets[pc] = pos; + state.paramOffsets[pc + 1] = len; + state.paramCount++; + state.handlerIndex = node.wildcardStore; + return true; +} + +export { createRecursiveWalker }; diff --git a/packages/router/src/matcher/walkers/test-fixtures.ts b/packages/router/src/matcher/walkers/test-fixtures.ts new file mode 100644 index 0000000..8a22fb5 --- /dev/null +++ b/packages/router/src/matcher/walkers/test-fixtures.ts @@ -0,0 +1,33 @@ +import type { SegmentNode } from '../../tree'; + +import { WildcardOrigin } from '../../tree'; + +export const STORE_NODE: SegmentNode = { + store: 7, + staticChildren: null, + singleChildKey: null, + singleChildNext: null, + paramChild: null, + wildcardStore: null, + wildcardName: null, + wildcardOrigin: null, + staticPrefix: null, +}; + +export const STAR_WILDCARD_NODE: SegmentNode = { + store: null, + staticChildren: null, + singleChildKey: null, + singleChildNext: null, + paramChild: null, + wildcardStore: 9, + wildcardName: 'rest', + wildcardOrigin: WildcardOrigin.Star, + staticPrefix: null, +}; + +export const MULTI_WILDCARD_NODE: SegmentNode = { + ...STAR_WILDCARD_NODE, + wildcardOrigin: WildcardOrigin.Multi, + wildcardStore: 11, +}; diff --git a/packages/router/src/method-registry.spec.ts b/packages/router/src/method-registry.spec.ts index 126e797..6a0d416 100644 --- a/packages/router/src/method-registry.spec.ts +++ b/packages/router/src/method-registry.spec.ts @@ -1,18 +1,30 @@ -import { describe, it, expect } from 'bun:test'; import { isErr } from '@zipbul/result'; -import type { RouterErrData } from './types'; +import { describe, it, expect } from 'bun:test'; +import { expectErrData, expectErrorKind, expectOk } from '../test/test-utils'; import { MethodRegistry } from './method-registry'; +import { RouterErrorKind } from './types'; -describe('MethodRegistry', () => { - // ── HP: Happy Path ── +function codeOf(reg: MethodRegistry, method: string): number | undefined { + return reg.getCodeMap()[method]; +} +function sizeOf(reg: MethodRegistry): number { + return reg.getAllCodes().length; +} + +describe('MethodRegistry', () => { describe('happy path', () => { it('should return correct offsets for all 7 default methods', () => { const reg = new MethodRegistry(); const defaults: Array<[string, number]> = [ - ['GET', 0], ['POST', 1], ['PUT', 2], ['PATCH', 3], - ['DELETE', 4], ['OPTIONS', 5], ['HEAD', 6], + ['GET', 0], + ['POST', 1], + ['PUT', 2], + ['PATCH', 3], + ['DELETE', 4], + ['OPTIONS', 5], + ['HEAD', 6], ]; for (const [method, expected] of defaults) { @@ -37,68 +49,65 @@ describe('MethodRegistry', () => { expect(reg.getOrCreate('UNLOCK')).toBe(9); }); - it('should return offset via get() for registered custom method', () => { + it('should expose the offset of a registered custom method in the code map', () => { const reg = new MethodRegistry(); reg.getOrCreate('PROPFIND'); - expect(reg.get('PROPFIND')).toBe(7); + expect(codeOf(reg, 'PROPFIND')).toBe(7); }); - it('should return 7 for size on fresh instance', () => { + it('should report 7 registered codes on a fresh instance', () => { const reg = new MethodRegistry(); - expect(reg.size).toBe(7); + expect(sizeOf(reg)).toBe(7); }); - it('should increase size after custom method registration', () => { + it('should report one more registered code after custom method registration', () => { const reg = new MethodRegistry(); reg.getOrCreate('PROPFIND'); - expect(reg.size).toBe(8); + expect(sizeOf(reg)).toBe(8); }); }); - // ── ED: Edge ── - describe('edge cases', () => { - it('should assign offset for empty string method name', () => { + it('should reject empty string method name', () => { const reg = new MethodRegistry(); const result = reg.getOrCreate(''); - expect(isErr(result)).toBe(false); - expect(result).toBe(7); + const data = expectErrData(result); + expect([RouterErrorKind.MethodEmpty, 'method-too-long', RouterErrorKind.MethodInvalidToken]).toContain(data.kind); }); - it('should return undefined from get() for non-existent method', () => { + it('should expose no code in the map for a non-existent method', () => { const reg = new MethodRegistry(); - expect(reg.get('NONEXISTENT')).toBeUndefined(); + expect(codeOf(reg, 'NONEXISTENT')).toBeUndefined(); }); - it('should assign offset for very long method name', () => { + it('should accept arbitrarily long valid-tchar method names (no length cap; RFC 9110 §2.3)', () => { const reg = new MethodRegistry(); const longName = 'X'.repeat(1000); const result = reg.getOrCreate(longName); - expect(isErr(result)).toBe(false); - expect(result).toBe(7); + const offset = expectOk(result); + expect(typeof offset).toBe('number'); + expect(codeOf(reg, longName)).toBe(offset); }); - it('should allow exactly 32 methods and all be accessible via get()', () => { + it('should allow exactly 32 methods and all be present in the code map', () => { const reg = new MethodRegistry(); - // 7 defaults + 25 customs = 32 for (let i = 0; i < 25; i++) { const result = reg.getOrCreate(`CUSTOM_${i}`); expect(isErr(result)).toBe(false); } - expect(reg.size).toBe(32); + expect(sizeOf(reg)).toBe(32); - // All accessible - expect(reg.get('GET')).toBe(0); - expect(reg.get('CUSTOM_0')).toBe(7); - expect(reg.get('CUSTOM_24')).toBe(31); + expect(codeOf(reg, 'GET')).toBe(0); + expect(codeOf(reg, 'CUSTOM_0')).toBe(7); + expect(codeOf(reg, 'CUSTOM_24')).toBe(31); }); it('should assign offset 31 for the 32nd method (boundary)', () => { @@ -108,24 +117,21 @@ describe('MethodRegistry', () => { reg.getOrCreate(`CUSTOM_${i}`); } - // 32nd method (7 defaults + 24 = 31, so next = 25th custom = index 31) const result = reg.getOrCreate('CUSTOM_24'); expect(result).toBe(31); }); - it('should treat methods as case-sensitive (\'get\' ≠ \'GET\')', () => { + it("should treat methods as case-sensitive ('get' ≠ 'GET')", () => { const reg = new MethodRegistry(); - expect(reg.get('GET')).toBe(0); - expect(reg.get('get')).toBeUndefined(); + expect(codeOf(reg, 'GET')).toBe(0); + expect(codeOf(reg, 'get')).toBeUndefined(); const result = reg.getOrCreate('get'); - expect(result).toBe(7); // New method, not the default 'GET' + expect(result).toBe(7); }); }); - // ── NE: Negative / Error ── - describe('negative / error', () => { function fillToMax(reg: MethodRegistry): void { for (let i = 0; i < 25; i++) { @@ -133,16 +139,13 @@ describe('MethodRegistry', () => { } } - it('should return err with kind=\'method-limit\' when exceeding 32 methods', () => { + it('should return err with kind=RouterErrorKind.MethodLimit when exceeding 32 methods', () => { const reg = new MethodRegistry(); fillToMax(reg); const result = reg.getOrCreate('OVERFLOW'); - expect(isErr(result)).toBe(true); - if (isErr(result)) { - expect(result.data.kind).toBe('method-limit'); - } + expect(expectErrData(result).kind).toBe(RouterErrorKind.MethodLimit); }); it('should include message in limit error', () => { @@ -151,11 +154,9 @@ describe('MethodRegistry', () => { const result = reg.getOrCreate('OVERFLOW'); - expect(isErr(result)).toBe(true); - if (isErr(result)) { - expect(typeof result.data.message).toBe('string'); - expect(result.data.message.length).toBeGreaterThan(0); - } + const data = expectErrData(result); + expect(typeof data.message).toBe('string'); + expect(data.message.length).toBeGreaterThan(0); }); it('should include method field in limit error matching rejected method', () => { @@ -164,27 +165,23 @@ describe('MethodRegistry', () => { const result = reg.getOrCreate('REJECTED_METHOD'); - expect(isErr(result)).toBe(true); - if (isErr(result)) { - expect(result.data.method).toBe('REJECTED_METHOD'); - } + const data = expectErrorKind(expectErrData(result), RouterErrorKind.MethodLimit); + expect(data.method).toBe('REJECTED_METHOD'); }); - it('should allow get() for existing methods after limit error', () => { + it('should keep existing method codes available after limit error', () => { const reg = new MethodRegistry(); fillToMax(reg); - reg.getOrCreate('OVERFLOW'); // trigger error - - expect(reg.get('GET')).toBe(0); - expect(reg.get('CUSTOM_0')).toBe(7); - expect(reg.get('CUSTOM_24')).toBe(31); + reg.getOrCreate('OVERFLOW'); + expect(codeOf(reg, 'GET')).toBe(0); + expect(codeOf(reg, 'CUSTOM_0')).toBe(7); + expect(codeOf(reg, 'CUSTOM_24')).toBe(31); }); it('should allow getOrCreate() for existing methods after limit error', () => { const reg = new MethodRegistry(); fillToMax(reg); - reg.getOrCreate('OVERFLOW'); // trigger error - + reg.getOrCreate('OVERFLOW'); const result = reg.getOrCreate('GET'); expect(isErr(result)).toBe(false); expect(result).toBe(0); @@ -194,27 +191,25 @@ describe('MethodRegistry', () => { expect(customResult).toBe(7); }); - it('should return undefined from get() for method that caused limit error', () => { + it('should not retain a code for the method that caused the limit error', () => { const reg = new MethodRegistry(); fillToMax(reg); reg.getOrCreate('OVERFLOW'); - expect(reg.get('OVERFLOW')).toBeUndefined(); + expect(codeOf(reg, 'OVERFLOW')).toBeUndefined(); }); - it('should not change size after limit error', () => { + it('should not change the registered-code count after limit error', () => { const reg = new MethodRegistry(); fillToMax(reg); - expect(reg.size).toBe(32); + expect(sizeOf(reg)).toBe(32); reg.getOrCreate('OVERFLOW'); - expect(reg.size).toBe(32); + expect(sizeOf(reg)).toBe(32); }); }); - // ── CO: Corner ── - describe('corner cases', () => { it('should return existing offset via getOrCreate when at max capacity', () => { const reg = new MethodRegistry(); @@ -223,7 +218,6 @@ describe('MethodRegistry', () => { reg.getOrCreate(`CUSTOM_${i}`); } - // At max, but requesting existing const result = reg.getOrCreate('GET'); expect(isErr(result)).toBe(false); expect(result).toBe(0); @@ -234,12 +228,12 @@ describe('MethodRegistry', () => { reg.getOrCreate('PROPFIND'); const offsetBefore = reg.getOrCreate('PROPFIND'); - const sizeBefore = reg.size; + const sizeBefore = sizeOf(reg); reg.getOrCreate('PROPFIND'); expect(reg.getOrCreate('PROPFIND')).toBe(offsetBefore); - expect(reg.size).toBe(sizeBefore); + expect(sizeOf(reg)).toBe(sizeBefore); }); it('should keep two MethodRegistry instances fully independent', () => { @@ -248,10 +242,10 @@ describe('MethodRegistry', () => { reg1.getOrCreate('PROPFIND'); - expect(reg1.get('PROPFIND')).toBe(7); - expect(reg2.get('PROPFIND')).toBeUndefined(); - expect(reg1.size).toBe(8); - expect(reg2.size).toBe(7); + expect(codeOf(reg1, 'PROPFIND')).toBe(7); + expect(codeOf(reg2, 'PROPFIND')).toBeUndefined(); + expect(sizeOf(reg1)).toBe(8); + expect(sizeOf(reg2)).toBe(7); }); it('should handle mixed: add custom → hit limit → getOrCreate existing → ok', () => { @@ -261,44 +255,36 @@ describe('MethodRegistry', () => { reg.getOrCreate(`CUSTOM_${i}`); } - // Hit limit const limitResult = reg.getOrCreate('NEW'); expect(isErr(limitResult)).toBe(true); - // Existing custom still works const existingResult = reg.getOrCreate('CUSTOM_12'); expect(isErr(existingResult)).toBe(false); expect(existingResult).toBe(7 + 12); }); }); - // ── ST: State Transition ── - describe('state transition', () => { it('should complete full lifecycle: construct → fill to 32 → hit limit → reads ok', () => { const reg = new MethodRegistry(); - // Phase 1: verify initial state - expect(reg.size).toBe(7); + expect(sizeOf(reg)).toBe(7); - // Phase 2: fill to capacity for (let i = 0; i < 25; i++) { const result = reg.getOrCreate(`M_${i}`); expect(isErr(result)).toBe(false); expect(result).toBe(7 + i); } - expect(reg.size).toBe(32); + expect(sizeOf(reg)).toBe(32); - // Phase 3: hit limit const errResult = reg.getOrCreate('OVER'); expect(isErr(errResult)).toBe(true); - // Phase 4: reads still work - expect(reg.get('GET')).toBe(0); - expect(reg.get('HEAD')).toBe(6); - expect(reg.get('M_0')).toBe(7); - expect(reg.get('M_24')).toBe(31); + expect(codeOf(reg, 'GET')).toBe(0); + expect(codeOf(reg, 'HEAD')).toBe(6); + expect(codeOf(reg, 'M_0')).toBe(7); + expect(codeOf(reg, 'M_24')).toBe(31); }); it('should preserve default offsets after adding custom methods', () => { @@ -312,37 +298,33 @@ describe('MethodRegistry', () => { expect(reg.getOrCreate('HEAD')).toBe(6); }); - it('should remain consistent after error (get/getOrCreate still work)', () => { + it('should remain consistent after error (code map / getOrCreate still work)', () => { const reg = new MethodRegistry(); for (let i = 0; i < 25; i++) { reg.getOrCreate(`C_${i}`); } - // Error reg.getOrCreate('FAIL_1'); reg.getOrCreate('FAIL_2'); - // Still consistent - expect(reg.size).toBe(32); - expect(reg.get('GET')).toBe(0); - expect(reg.get('C_0')).toBe(7); + expect(sizeOf(reg)).toBe(32); + expect(codeOf(reg, 'GET')).toBe(0); + expect(codeOf(reg, 'C_0')).toBe(7); expect(reg.getOrCreate('C_0')).toBe(7); }); - it('should transition get() from undefined to offset after getOrCreate', () => { + it('should transition a method code from absent to assigned after getOrCreate', () => { const reg = new MethodRegistry(); - expect(reg.get('TRACE')).toBeUndefined(); + expect(codeOf(reg, 'TRACE')).toBeUndefined(); reg.getOrCreate('TRACE'); - expect(reg.get('TRACE')).toBe(7); + expect(codeOf(reg, 'TRACE')).toBe(7); }); }); - // ── ID: Idempotency ── - describe('idempotency', () => { it('should return same offset when getOrCreate called twice for default', () => { const reg = new MethodRegistry(); @@ -353,17 +335,17 @@ describe('MethodRegistry', () => { expect(reg.getOrCreate('HEAD')).toBe(6); }); - it('should return same offset and not change size for repeated custom getOrCreate', () => { + it('should return same offset and not change the count for repeated custom getOrCreate', () => { const reg = new MethodRegistry(); expect(reg.getOrCreate('PROPFIND')).toBe(7); - expect(reg.size).toBe(8); + expect(sizeOf(reg)).toBe(8); expect(reg.getOrCreate('PROPFIND')).toBe(7); - expect(reg.size).toBe(8); + expect(sizeOf(reg)).toBe(8); expect(reg.getOrCreate('PROPFIND')).toBe(7); - expect(reg.size).toBe(8); + expect(sizeOf(reg)).toBe(8); }); it('should return same error kind on repeated limit attempts', () => { @@ -376,18 +358,11 @@ describe('MethodRegistry', () => { const r1 = reg.getOrCreate('A'); const r2 = reg.getOrCreate('B'); - expect(isErr(r1)).toBe(true); - expect(isErr(r2)).toBe(true); - - if (isErr(r1) && isErr(r2)) { - expect(r1.data.kind).toBe('method-limit'); - expect(r2.data.kind).toBe('method-limit'); - } + expect(expectErrData(r1).kind).toBe(RouterErrorKind.MethodLimit); + expect(expectErrData(r2).kind).toBe(RouterErrorKind.MethodLimit); }); }); - // ── OR: Ordering ── - describe('ordering', () => { it('should assign offsets to custom methods in registration order', () => { const reg = new MethodRegistry(); @@ -400,13 +375,13 @@ describe('MethodRegistry', () => { it('should assign sequential custom offsets despite interleaved default access', () => { const reg = new MethodRegistry(); - reg.getOrCreate('GET'); // default, no new offset + reg.getOrCreate('GET'); expect(reg.getOrCreate('ALPHA')).toBe(7); - reg.getOrCreate('POST'); // default, no new offset + reg.getOrCreate('POST'); expect(reg.getOrCreate('BETA')).toBe(8); - reg.getOrCreate('PUT'); // default + reg.getOrCreate('PUT'); expect(reg.getOrCreate('GAMMA')).toBe(9); }); @@ -414,10 +389,54 @@ describe('MethodRegistry', () => { const reg = new MethodRegistry(); expect(reg.getOrCreate('A')).toBe(7); - reg.getOrCreate('A'); // re-register, no gap + reg.getOrCreate('A'); expect(reg.getOrCreate('B')).toBe(8); - reg.getOrCreate('B'); // re-register, no gap + reg.getOrCreate('B'); expect(reg.getOrCreate('C')).toBe(9); }); }); + + describe('getCodeMap', () => { + it('should expose every default method with the same offset as getOrCreate', () => { + const reg = new MethodRegistry(); + const map = reg.getCodeMap(); + + expect(map.GET).toBe(0); + expect(map.POST).toBe(1); + expect(map.PUT).toBe(2); + expect(map.PATCH).toBe(3); + expect(map.DELETE).toBe(4); + expect(map.OPTIONS).toBe(5); + expect(map.HEAD).toBe(6); + }); + + it('should reflect newly registered custom methods immediately', () => { + const reg = new MethodRegistry(); + reg.getOrCreate('PROPFIND'); + const map = reg.getCodeMap(); + + expect(map.PROPFIND).toBe(7); + }); + + it('should be a prototype-less object so unrelated property reads return undefined', () => { + const reg = new MethodRegistry(); + const map = reg.getCodeMap() as unknown as Record; + + expect(Object.getPrototypeOf(map)).toBeNull(); + expect(map.toString).toBeUndefined(); + expect(map.hasOwnProperty).toBeUndefined(); + }); + + it('should agree with getAllCodes() entry-by-entry', () => { + const reg = new MethodRegistry(); + reg.getOrCreate('PROPFIND'); + reg.getOrCreate('LOCK'); + + const map = reg.getCodeMap(); + + for (const [name, code] of reg.getAllCodes()) { + expect(map[name]).toBe(code); + } + }); + }); }); diff --git a/packages/router/src/method-registry.ts b/packages/router/src/method-registry.ts index 7170589..a5e628d 100644 --- a/packages/router/src/method-registry.ts +++ b/packages/router/src/method-registry.ts @@ -1,6 +1,11 @@ -import { err } from '@zipbul/result'; import type { Result } from '@zipbul/result'; -import type { RouterErrData } from './types'; + +import { err, isErr } from '@zipbul/result'; + +import type { RouterErrorData } from './types'; + +import { validateMethodToken } from './builder'; +import { RouterErrorKind } from './types'; const DEFAULT_METHODS: ReadonlyArray = [ ['GET', 0], @@ -14,48 +19,73 @@ const DEFAULT_METHODS: ReadonlyArray = [ const MAX_METHODS = 32; +interface MethodRegistrySnapshot { + entries: Array; + nextOffset: number; +} + export class MethodRegistry { - private readonly methodToOffset = new Map(); + private codeMap: Record = Object.create(null) as Record; private nextOffset: number; constructor() { for (const [method, offset] of DEFAULT_METHODS) { - this.methodToOffset.set(method, offset); + this.codeMap[method] = offset; } - this.nextOffset = DEFAULT_METHODS.length; } - getOrCreate(method: string): Result { - const existing = this.methodToOffset.get(method); - + getOrCreate(method: string): Result { + const existing = this.codeMap[method]; if (existing !== undefined) { return existing; } + const tokenCheck = validateMethodToken(method); + if (isErr(tokenCheck)) { + return tokenCheck; + } + if (this.nextOffset >= MAX_METHODS) { return err({ - kind: 'method-limit', + kind: RouterErrorKind.MethodLimit, message: `Maximum of ${MAX_METHODS} HTTP methods exceeded. Cannot register method '${method}'.`, method, + suggestion: `Reduce the number of distinct HTTP methods in this router (limit is ${MAX_METHODS}) or split routes across multiple Router instances.`, }); } const offset = this.nextOffset++; - this.methodToOffset.set(method, offset); - + this.codeMap[method] = offset; return offset; } - get(method: string): number | undefined { - return this.methodToOffset.get(method); + getAllCodes(): ReadonlyArray { + const out: Array = []; + for (const k in this.codeMap) { + out.push([k, this.codeMap[k]!] as const); + } + return out; } - get size(): number { - return this.methodToOffset.size; + getCodeMap(): Readonly> { + return this.codeMap; } - getAllCodes(): ReadonlyMap { - return this.methodToOffset; + snapshot(): MethodRegistrySnapshot { + const entries: Array = []; + for (const k in this.codeMap) { + entries.push([k, this.codeMap[k]!]); + } + return { entries, nextOffset: this.nextOffset }; + } + + restore(snapshot: MethodRegistrySnapshot): void { + const fresh = Object.create(null) as Record; + for (const [method, offset] of snapshot.entries) { + fresh[method] = offset; + } + this.codeMap = fresh; + this.nextOffset = snapshot.nextOffset; } } diff --git a/packages/router/src/pipeline/build.spec.ts b/packages/router/src/pipeline/build.spec.ts new file mode 100644 index 0000000..4df18ee --- /dev/null +++ b/packages/router/src/pipeline/build.spec.ts @@ -0,0 +1,158 @@ +import { describe, expect, it } from 'bun:test'; + +import type { RouterOptions } from '../types'; +import type { RegistrationSnapshot } from './registration'; + +import { MethodRegistry } from '../method-registry'; +import { MatchSource } from '../types'; +import { buildFromRegistration } from './build'; + +function emptySnapshot(overrides: Partial> = {}): RegistrationSnapshot { + return { + staticByMethod: [], + staticPathMethodMask: Object.create(null) as Record, + segmentTrees: [], + handlers: [], + terminalSlab: new Int32Array(0), + paramsFactories: [], + maxParamsObserved: 0, + ...overrides, + }; +} + +describe('buildFromRegistration — staticOutputsByMethod', () => { + it('materializes a frozen MatchOutput per static path, with source: "static"', () => { + const registry = new MethodRegistry(); + const getCode = registry.getCodeMap()['GET']!; + const bucket: Record = Object.create(null); + bucket['/health'] = 'h'; + const staticByMethod: Array | undefined> = []; + staticByMethod[getCode] = bucket; + + const result = buildFromRegistration(emptySnapshot({ staticByMethod }), {}, registry); + + const outBucket = result.staticOutputsByMethod[getCode]!; + const out = outBucket['/health']!; + expect(out.value).toBe('h'); + expect(out.meta.source).toBe(MatchSource.Static); + expect(Object.isFrozen(out)).toBe(true); + }); + + it('skips methods with no static bucket (sparse output array)', () => { + const registry = new MethodRegistry(); + const result = buildFromRegistration(emptySnapshot(), {}, registry); + for (const bucket of result.staticOutputsByMethod) { + expect(bucket).toBeUndefined(); + } + }); +}); + +describe('buildFromRegistration — activeMethodCodes filter', () => { + it('includes only methods with either a tree or a static bucket', () => { + const registry = new MethodRegistry(); + const getCode = registry.getCodeMap()['GET']!; + const bucket: Record = Object.create(null); + bucket['/x'] = 'x'; + const staticByMethod: Array | undefined> = []; + staticByMethod[getCode] = bucket; + + const result = buildFromRegistration(emptySnapshot({ staticByMethod }), {}, registry); + + const activeNames = result.activeMethodCodes.map(([n]) => n); + expect(activeNames).toContain('GET'); + expect(activeNames).not.toContain('POST'); + }); + + it('returns an empty active list when no method has trees or buckets', () => { + const registry = new MethodRegistry(); + const result = buildFromRegistration(emptySnapshot(), {}, registry); + expect(result.activeMethodCodes).toEqual([]); + }); +}); + +describe('buildFromRegistration — options wiring', () => { + it('defaults ignoreTrailingSlash=true (option absent)', () => { + const registry = new MethodRegistry(); + const result = buildFromRegistration(emptySnapshot(), {}, registry); + expect(result.ignoreTrailingSlash).toBe(true); + }); + + it('honors ignoreTrailingSlash=false by setting ignoreTrailingSlash=false', () => { + const registry = new MethodRegistry(); + const opts: RouterOptions = { ignoreTrailingSlash: false }; + const result = buildFromRegistration(emptySnapshot(), opts, registry); + expect(result.ignoreTrailingSlash).toBe(false); + }); + + it('defaults caseSensitive=true (option absent)', () => { + const registry = new MethodRegistry(); + const result = buildFromRegistration(emptySnapshot(), {}, registry); + expect(result.caseSensitive).toBe(true); + }); + + it('honors pathCaseSensitive=false', () => { + const registry = new MethodRegistry(); + const opts: RouterOptions = { pathCaseSensitive: false }; + const result = buildFromRegistration(emptySnapshot(), opts, registry); + expect(result.caseSensitive).toBe(false); + }); +}); + +describe('buildFromRegistration — normalizePath', () => { + it('trims trailing slash when ignoreTrailingSlash is on', () => { + const registry = new MethodRegistry(); + const result = buildFromRegistration(emptySnapshot(), { ignoreTrailingSlash: true }, registry); + expect(result.normalizePath('/x/')).toBe('/x'); + }); + + it('preserves trailing slash when ignoreTrailingSlash=false', () => { + const registry = new MethodRegistry(); + const result = buildFromRegistration(emptySnapshot(), { ignoreTrailingSlash: false }, registry); + expect(result.normalizePath('/x/')).toBe('/x/'); + }); + + it('lowercases when pathCaseSensitive=false', () => { + const registry = new MethodRegistry(); + const result = buildFromRegistration(emptySnapshot(), { pathCaseSensitive: false }, registry); + expect(result.normalizePath('/HELLO')).toBe('/hello'); + }); + + it('preserves the root slash even with trimSlash on', () => { + const registry = new MethodRegistry(); + const result = buildFromRegistration(emptySnapshot(), { ignoreTrailingSlash: true }, registry); + expect(result.normalizePath('/')).toBe('/'); + }); +}); + +describe('buildFromRegistration — passthrough fields', () => { + it('forwards staticPathMethodMask from the snapshot unchanged', () => { + const registry = new MethodRegistry(); + const mask: Record = Object.create(null); + mask['/x'] = 0b101; + const result = buildFromRegistration(emptySnapshot({ staticPathMethodMask: mask }), {}, registry); + expect(result.staticPathMethodMask).toBe(mask); + }); + + it('forwards terminalSlab from the snapshot unchanged', () => { + const registry = new MethodRegistry(); + const slab = new Int32Array(6); + slab[0] = 7; + const result = buildFromRegistration(emptySnapshot({ terminalSlab: slab }), {}, registry); + expect(result.terminalSlab).toBe(slab); + }); + + it('forwards paramsFactories from the snapshot unchanged', () => { + const registry = new MethodRegistry(); + const factories = [() => Object.create(null) as Record]; + const result = buildFromRegistration(emptySnapshot({ paramsFactories: factories }), {}, registry); + expect(result.paramsFactories).toBe(factories); + }); + + it('pre-allocates matchState sized to maxParamsObserved', () => { + const registry = new MethodRegistry(); + const result = buildFromRegistration(emptySnapshot({ maxParamsObserved: 5 }), {}, registry); + expect(result.matchState).toBeDefined(); + expect(result.matchState.paramOffsets).toBeInstanceOf(Int32Array); + expect(result.matchState.paramOffsets.length).toBeGreaterThanOrEqual(10); + }); +}); diff --git a/packages/router/src/pipeline/build.ts b/packages/router/src/pipeline/build.ts new file mode 100644 index 0000000..8bbe5ab --- /dev/null +++ b/packages/router/src/pipeline/build.ts @@ -0,0 +1,100 @@ +import type { PathNormalizer } from '../codegen'; +import type { MatchFn, MatchOutput, MatchState, RouteParams, RouterOptions } from '../types'; +import type { RegistrationSnapshot } from './registration'; + +import { buildPathNormalizer } from '../codegen'; +import { EMPTY_PARAMS, STATIC_META, createNullProtoBucket } from '../internal'; +import { createMatchState, createSegmentWalker, decoder } from '../matcher'; +import { MethodRegistry } from '../method-registry'; + +export interface BuildResult { + trees: Array; + staticOutputsByMethod: Array> | undefined>; + staticByPath: Record | undefined> }>; + staticPathMethodMask: Record; + activeMethodCodes: ReadonlyArray; + methodCodes: Readonly>; + matchState: MatchState; + normalizePath: PathNormalizer; + terminalSlab: Int32Array; + paramsFactories: Array<((presentBitmask: number, u: string, v: Int32Array) => RouteParams) | null>; + ignoreTrailingSlash: boolean; + caseSensitive: boolean; +} + +export function buildFromRegistration( + snapshot: RegistrationSnapshot, + options: RouterOptions, + methodRegistry: MethodRegistry, +): BuildResult { + const allCodes = methodRegistry.getAllCodes(); + const methodCodes = methodRegistry.getCodeMap(); + + const staticOutputsByMethod: Array> | undefined> = []; + const staticByPath: Record | undefined> }> = createNullProtoBucket(); + for (let mc = 0; mc < snapshot.staticByMethod.length; mc++) { + const inputBucket = snapshot.staticByMethod[mc]; + if (inputBucket === undefined) { + continue; + } + + const outBucket = createNullProtoBucket>(); + staticOutputsByMethod[mc] = outBucket; + + for (const path in inputBucket) { + const output = Object.freeze({ + value: inputBucket[path] as T, + params: EMPTY_PARAMS, + meta: STATIC_META, + }) as MatchOutput; + outBucket[path] = output; + + let entry = staticByPath[path]; + if (entry === undefined) { + entry = { mask: 0, outputs: [] }; + staticByPath[path] = entry; + } + entry.mask |= 1 << mc; + entry.outputs[mc] = output; + } + } + + const matchState = createMatchState(snapshot.maxParamsObserved); + + const trees: Array = []; + const activeMethodCodes: Array = []; + for (const [name, code] of allCodes) { + const segRoot = snapshot.segmentTrees[code]; + let walker: MatchFn | null = null; + if (segRoot !== undefined && segRoot !== null) { + walker = createSegmentWalker(segRoot, decoder, matchState); + } + trees[code] = walker; + if (walker !== null || staticOutputsByMethod[code] !== undefined) { + activeMethodCodes.push([name, code]); + } + } + + const ignoreTrailingSlash = options.ignoreTrailingSlash ?? true; + const caseSensitive = options.pathCaseSensitive ?? true; + + const normalizePath = buildPathNormalizer({ + trimSlash: ignoreTrailingSlash, + lowerCase: !caseSensitive, + }); + + return { + trees, + staticOutputsByMethod, + staticByPath, + staticPathMethodMask: snapshot.staticPathMethodMask, + activeMethodCodes, + methodCodes, + matchState, + normalizePath, + terminalSlab: snapshot.terminalSlab, + paramsFactories: snapshot.paramsFactories, + ignoreTrailingSlash, + caseSensitive, + }; +} diff --git a/packages/router/src/pipeline/identity-registry.spec.ts b/packages/router/src/pipeline/identity-registry.spec.ts new file mode 100644 index 0000000..9d6b107 --- /dev/null +++ b/packages/router/src/pipeline/identity-registry.spec.ts @@ -0,0 +1,97 @@ +import { describe, expect, it } from 'bun:test'; + +import { IdentityRegistry } from './identity-registry'; + +describe('IdentityRegistry — primitive interning', () => { + it('returns the same id for two equal strings', () => { + const r = new IdentityRegistry(); + expect(r.idFor('hello')).toBe(r.idFor('hello')); + }); + + it('returns the same id for two equal numbers', () => { + const r = new IdentityRegistry(); + expect(r.idFor(42)).toBe(r.idFor(42)); + }); + + it('returns the same id for two equal booleans', () => { + const r = new IdentityRegistry(); + expect(r.idFor(true)).toBe(r.idFor(true)); + }); + + it('returns the same id across null calls', () => { + const r = new IdentityRegistry(); + expect(r.idFor(null)).toBe(r.idFor(null)); + }); + + it('returns the same id across undefined calls', () => { + const r = new IdentityRegistry(); + expect(r.idFor(undefined)).toBe(r.idFor(undefined)); + }); + + it('isolates string keys from number keys (tagged keys prevent collision)', () => { + const r = new IdentityRegistry(); + expect(r.idFor('1')).not.toBe(r.idFor(1)); + }); + + it('isolates number 0 from boolean false', () => { + const r = new IdentityRegistry(); + expect(r.idFor(0)).not.toBe(r.idFor(false)); + }); + + it('isolates null from undefined', () => { + const r = new IdentityRegistry(); + expect(r.idFor(null)).not.toBe(r.idFor(undefined)); + }); + + it('interns bigint by string representation', () => { + const r = new IdentityRegistry(); + expect(r.idFor(BigInt(123))).toBe(r.idFor(BigInt(123))); + expect(r.idFor(BigInt(123))).not.toBe(r.idFor(BigInt(456))); + }); + + it('interns symbols by their toString representation', () => { + const r = new IdentityRegistry(); + const s = Symbol('x'); + expect(r.idFor(s)).toBe(r.idFor(s)); + }); +}); + +describe('IdentityRegistry — object interning', () => { + it('returns the same id for two calls with the same object reference', () => { + const r = new IdentityRegistry(); + const obj = { x: 1 }; + expect(r.idFor(obj)).toBe(r.idFor(obj)); + }); + + it('returns distinct ids for distinct object references even when structurally equal', () => { + const r = new IdentityRegistry(); + expect(r.idFor({ x: 1 })).not.toBe(r.idFor({ x: 1 })); + }); + + it('returns the same id for two calls with the same function reference', () => { + const r = new IdentityRegistry(); + const fn = () => 1; + expect(r.idFor(fn)).toBe(r.idFor(fn)); + }); + + it('returns distinct ids for distinct function references', () => { + const r = new IdentityRegistry(); + expect(r.idFor(() => 1)).not.toBe(r.idFor(() => 1)); + }); +}); + +describe('IdentityRegistry — id allocation', () => { + it('hands out non-negative integer ids', () => { + const r = new IdentityRegistry(); + const id = r.idFor('a'); + expect(Number.isInteger(id)).toBe(true); + expect(id).toBeGreaterThanOrEqual(0); + }); + + it('hands out monotonically increasing ids on first observation', () => { + const r = new IdentityRegistry(); + const first = r.idFor('a'); + const second = r.idFor('b'); + expect(second).toBe(first + 1); + }); +}); diff --git a/packages/router/src/pipeline/identity-registry.ts b/packages/router/src/pipeline/identity-registry.ts new file mode 100644 index 0000000..ca156e4 --- /dev/null +++ b/packages/router/src/pipeline/identity-registry.ts @@ -0,0 +1,57 @@ +export class IdentityRegistry { + private readonly objectIds: WeakMap; + private readonly primitiveIds: Map; + private nextId: number; + + constructor() { + this.objectIds = new WeakMap(); + this.primitiveIds = new Map(); + this.nextId = 0; + } + + idFor(value: unknown): number { + if (value === null) { + return this.internPrimitive('null:'); + } + const t = typeof value; + if (t === 'object' || t === 'function') { + const obj = value as object; + const cached = this.objectIds.get(obj); + if (cached !== undefined) { + return cached; + } + const id = this.nextId++; + this.objectIds.set(obj, id); + return id; + } + if (t === 'undefined') { + return this.internPrimitive('undef:'); + } + if (t === 'string') { + return this.internPrimitive('s:' + (value as string)); + } + if (t === 'number') { + return this.internPrimitive('n:' + String(value)); + } + if (t === 'boolean') { + return this.internPrimitive('b:' + String(value)); + } + if (t === 'bigint') { + return this.internPrimitive('i:' + (value as bigint).toString()); + } + if (t === 'symbol') { + return this.internPrimitive('y:' + (value as symbol).toString()); + } + return this.internPrimitive('x:' + String(value)); + } + + private internPrimitive(key: string): number { + const cached = this.primitiveIds.get(key); + if (cached !== undefined) { + return cached; + } + const id = this.nextId++; + this.primitiveIds.set(key, id); + return id; + } +} diff --git a/packages/router/src/pipeline/index.ts b/packages/router/src/pipeline/index.ts new file mode 100644 index 0000000..6657054 --- /dev/null +++ b/packages/router/src/pipeline/index.ts @@ -0,0 +1,5 @@ +export { buildFromRegistration } from './build'; + +export { MatchLayer } from './match'; + +export { Registration } from './registration'; diff --git a/packages/router/src/pipeline/match.spec.ts b/packages/router/src/pipeline/match.spec.ts new file mode 100644 index 0000000..e9a467c --- /dev/null +++ b/packages/router/src/pipeline/match.spec.ts @@ -0,0 +1,135 @@ +import { describe, expect, it } from 'bun:test'; + +import type { PathNormalizer } from '../codegen'; +import type { MatchFn } from '../types'; + +import { createMatchState } from '../matcher/match-state'; +import { MatchLayer } from './match'; + +interface LayerInput { + normalize?: PathNormalizer; + active?: ReadonlyArray; + trees?: Array; + mask?: Record; +} + +function makeLayer(input: LayerInput = {}): MatchLayer { + return new MatchLayer({ + normalizePath: input.normalize ?? ((path: string) => path), + matchState: createMatchState(2), + activeMethodCodes: input.active ?? [], + trees: input.trees ?? [], + staticPathMethodMask: input.mask ?? (Object.create(null) as Record), + }); +} + +describe('allowedMethods — static-mask branch', () => { + it('returns the methods encoded in staticPathMethodMask for a known path', () => { + const mask: Record = Object.create(null); + mask['/x'] = (1 << 0) | (1 << 2); + const layer = makeLayer({ + mask, + active: [['GET', 0] as const, ['POST', 1] as const, ['DELETE', 2] as const], + }); + expect([...layer.allowedMethods('/x')].sort()).toEqual(['DELETE', 'GET']); + }); + + it('iterates bits in low-to-high order via lowest-set-bit extraction', () => { + const mask: Record = Object.create(null); + mask['/x'] = (1 << 1) | (1 << 3) | (1 << 5); + const layer = makeLayer({ + mask, + active: [['A', 0] as const, ['B', 1] as const, ['C', 2] as const, ['D', 3] as const, ['E', 4] as const, ['F', 5] as const], + }); + expect([...layer.allowedMethods('/x')].sort()).toEqual(['B', 'D', 'F']); + }); + + it('returns [] when the mask is absent for the queried path', () => { + const layer = makeLayer(); + expect(layer.allowedMethods('/unknown')).toEqual([]); + }); + + it('skips bits whose code does not appear in activeMethodCodes', () => { + const mask: Record = Object.create(null); + mask['/x'] = (1 << 0) | (1 << 7); + const layer = makeLayer({ + mask, + active: [['GET', 0] as const], + }); + expect(layer.allowedMethods('/x')).toEqual(['GET']); + }); +}); + +describe('allowedMethods — dynamic walker branch', () => { + it('returns methods whose tree walker accepts the path', () => { + const acceptingWalker: MatchFn = () => true; + const rejectingWalker: MatchFn = () => false; + const trees: Array = []; + trees[0] = acceptingWalker; + trees[1] = rejectingWalker; + const layer = makeLayer({ + trees, + active: [['GET', 0] as const, ['POST', 1] as const], + }); + expect(layer.allowedMethods('/dynamic/path')).toEqual(['GET']); + }); + + it('skips methods whose code lacks a tree (null or undefined)', () => { + const trees: Array = []; + trees[1] = () => true; + const layer = makeLayer({ + trees, + active: [['GET', 0] as const, ['POST', 1] as const], + }); + expect(layer.allowedMethods('/x')).toEqual(['POST']); + }); + + it('skips methods already represented in the static mask (no duplicate output)', () => { + const acceptingWalker: MatchFn = () => true; + const trees: Array = []; + trees[0] = acceptingWalker; + const mask: Record = Object.create(null); + mask['/x'] = 1 << 0; + const layer = makeLayer({ + trees, + mask, + active: [['GET', 0] as const], + }); + expect(layer.allowedMethods('/x')).toEqual(['GET']); + }); +}); + +describe('allowedMethods — normalize preprocessing wiring', () => { + it('applies normalizePath to the input before mask + walker dispatch', () => { + const recorded: string[] = []; + const normalize: PathNormalizer = path => { + recorded.push(path); + return path.toLowerCase(); + }; + const mask: Record = Object.create(null); + mask['/x'] = 1 << 0; + const layer = makeLayer({ + normalize, + mask, + active: [['GET', 0] as const], + }); + expect(layer.allowedMethods('/X')).toEqual(['GET']); + expect(recorded).toEqual(['/X']); + }); +}); + +describe('allowedMethods — combined branches', () => { + it('combines static-mask methods with dynamic-walker methods without duplicates', () => { + const acceptingWalker: MatchFn = () => true; + const trees: Array = []; + trees[1] = acceptingWalker; + const mask: Record = Object.create(null); + mask['/x'] = 1 << 0; + const layer = makeLayer({ + trees, + mask, + active: [['GET', 0] as const, ['POST', 1] as const], + }); + expect([...layer.allowedMethods('/x')].sort()).toEqual(['GET', 'POST']); + }); +}); diff --git a/packages/router/src/pipeline/match.ts b/packages/router/src/pipeline/match.ts new file mode 100644 index 0000000..feac229 --- /dev/null +++ b/packages/router/src/pipeline/match.ts @@ -0,0 +1,68 @@ +import type { PathNormalizer } from '../codegen'; +import type { MatchFn, MatchState } from '../types'; + +interface MatchLayerDeps { + normalizePath: PathNormalizer; + matchState: MatchState; + activeMethodCodes: ReadonlyArray; + trees: Array; + staticPathMethodMask: Record; +} + +export class MatchLayer { + private readonly normalizePath: PathNormalizer; + private readonly matchState: MatchState; + private readonly activeMethodCodes: ReadonlyArray; + private readonly trees: Array; + private readonly staticPathMethodMask: Record; + private readonly methodNameByCode: string[]; + + constructor(deps: MatchLayerDeps) { + this.normalizePath = deps.normalizePath; + this.matchState = deps.matchState; + this.activeMethodCodes = deps.activeMethodCodes; + this.trees = deps.trees; + this.staticPathMethodMask = deps.staticPathMethodMask; + const names: string[] = []; + for (const [name, code] of deps.activeMethodCodes) { + names[code] = name; + } + this.methodNameByCode = names; + } + + allowedMethods(path: string): readonly string[] { + const sp = this.normalizePath(path); + const out: string[] = []; + + const staticMask = (this.staticPathMethodMask[sp] ?? 0) | 0; + let mask = staticMask; + while (mask !== 0) { + const lowest = mask & -mask; + const code = 31 - Math.clz32(lowest); + const name = this.methodNameByCode[code]; + if (name !== undefined) { + out.push(name); + } + mask ^= lowest; + } + + const state = this.matchState; + const active = this.activeMethodCodes; + for (let i = 0; i < active.length; i++) { + const entry = active[i]!; + const methodCode = entry[1]; + if ((staticMask & (1 << methodCode)) !== 0) { + continue; + } + const tr = this.trees[methodCode]; + if (tr === null || tr === undefined) { + continue; + } + if (tr(sp, state)) { + out.push(entry[0]); + } + } + + return Object.freeze(out); + } +} diff --git a/packages/router/src/pipeline/registration.spec.ts b/packages/router/src/pipeline/registration.spec.ts new file mode 100644 index 0000000..28f0d06 --- /dev/null +++ b/packages/router/src/pipeline/registration.spec.ts @@ -0,0 +1,95 @@ +import { describe, expect, it } from 'bun:test'; + +import type { PathPart } from '../tree'; + +import { expectDefined } from '../../test/test-utils'; +import { MAX_OPTIONAL_SEGMENTS_PER_ROUTE } from '../builder'; +import { PathPartType, WildcardOrigin } from '../tree'; +import { RouterErrorKind } from '../types'; +import { checkDynamicRouteCaps, collectRouteShape } from './registration'; + +const STATIC_USERS: PathPart = { type: PathPartType.Static, value: '/users', segments: ['users'] }; +const PARAM_ID: PathPart = { type: PathPartType.Param, name: 'id', pattern: null, optional: false }; +const OPT_LANG: PathPart = { type: PathPartType.Param, name: 'lang', pattern: null, optional: true }; +const WILD_REST: PathPart = { type: PathPartType.Wildcard, name: 'rest', origin: WildcardOrigin.Star }; + +describe('collectRouteShape', () => { + it('returns empty arrays and zero count for a fully static route', () => { + const shape = collectRouteShape([STATIC_USERS]); + expect(shape.originalNames).toEqual([]); + expect(shape.originalTypes).toEqual([]); + expect(shape.optionalCount).toBe(0); + }); + + it('captures param names + types and counts the required param as non-optional', () => { + const shape = collectRouteShape([STATIC_USERS, PARAM_ID]); + expect(shape.originalNames).toEqual(['id']); + expect(shape.originalTypes).toEqual([PathPartType.Param]); + expect(shape.optionalCount).toBe(0); + }); + + it('counts only the optional param toward `optionalCount`', () => { + const shape = collectRouteShape([STATIC_USERS, OPT_LANG, PARAM_ID]); + expect(shape.originalNames).toEqual(['lang', 'id']); + expect(shape.optionalCount).toBe(1); + }); + + it('records wildcard segments alongside params with the right type tag', () => { + const shape = collectRouteShape([STATIC_USERS, PARAM_ID, WILD_REST]); + expect(shape.originalNames).toEqual(['id', 'rest']); + expect(shape.originalTypes).toEqual([PathPartType.Param, PathPartType.Wildcard]); + }); + + it('does not count wildcard segments as optional', () => { + const shape = collectRouteShape([STATIC_USERS, WILD_REST]); + expect(shape.optionalCount).toBe(0); + }); +}); + +describe('checkDynamicRouteCaps', () => { + it('returns undefined for a route within both caps', () => { + const shape = collectRouteShape([STATIC_USERS, PARAM_ID]); + expect(checkDynamicRouteCaps({ path: '/users/:id' }, shape)).toBeUndefined(); + }); + + it('rejects when optional segments exceed MAX_OPTIONAL_SEGMENTS_PER_ROUTE', () => { + const shape = { + originalNames: ['a', 'b', 'c', 'd', 'e'], + originalTypes: [ + PathPartType.Param, + PathPartType.Param, + PathPartType.Param, + PathPartType.Param, + PathPartType.Param, + ] as const, + optionalCount: MAX_OPTIONAL_SEGMENTS_PER_ROUTE + 1, + }; + const out = expectDefined(checkDynamicRouteCaps({ path: '/x' }, shape)); + expect(out.kind).toBe(RouterErrorKind.RouteParse); + expect(out.message).toContain(String(shape.optionalCount)); + expect(out.message).toContain(String(MAX_OPTIONAL_SEGMENTS_PER_ROUTE)); + }); + + it('rejects when capturing-segment count exceeds the 31-bit presentBitmask ceiling', () => { + const names = Array.from({ length: 32 }, (_, i) => `p${i}`); + const shape = { + originalNames: names, + originalTypes: names.map(() => PathPartType.Param as const), + optionalCount: 0, + }; + const out = expectDefined(checkDynamicRouteCaps({ path: '/x' }, shape)); + expect(out.kind).toBe(RouterErrorKind.RouteParse); + expect(out.message).toContain('32'); + expect(out.message).toContain('31'); + }); + + it('accepts exactly 31 capturing segments at the boundary', () => { + const names = Array.from({ length: 31 }, (_, i) => `p${i}`); + const shape = { + originalNames: names, + originalTypes: names.map(() => PathPartType.Param as const), + optionalCount: 0, + }; + expect(checkDynamicRouteCaps({ path: '/x' }, shape)).toBeUndefined(); + }); +}); diff --git a/packages/router/src/pipeline/registration.ts b/packages/router/src/pipeline/registration.ts new file mode 100644 index 0000000..0e8d616 --- /dev/null +++ b/packages/router/src/pipeline/registration.ts @@ -0,0 +1,542 @@ +import type { Result } from '@zipbul/result'; + +import { err, isErr } from '@zipbul/result'; + +import type { FactoryCache } from '../codegen'; +import type { PathPart, PatternTesterFn, SegmentNode, SegmentTreeUndoLog } from '../tree'; +import type { RouteParams, RouteValidationIssue, RouterErrorData } from '../types'; +import type { RouteMeta, CommitPlan } from './wildcard-prefix-index'; + +import { PathParser, expandOptional, MAX_OPTIONAL_SEGMENTS_PER_ROUTE } from '../builder'; +import { computePresentBitmask, createFactoryCache, getOrCreateSuperFactory } from '../codegen'; +import { RouterError } from '../error'; +import { decoder } from '../matcher'; +import { MethodRegistry } from '../method-registry'; +import { + applyUndo, + createSegmentNode, + detectTenantFactor, + insertIntoSegmentTree, + PathPartType, + pushStaticBucketResetUndo, + pushStaticMapDeleteUndo, + setTenantFactor, + UndoKind, +} from '../tree'; +import { RouterErrorKind } from '../types'; +import { IdentityRegistry } from './identity-registry'; +import { packTerminalSlab } from './terminal-slab'; +import { WILDCARD_METHOD, expandWildcardMethodRoutes } from './wildcard-method-expand'; +import { WildcardPrefixIndex, rollbackPlan } from './wildcard-prefix-index'; + +const BUILD_CHUNK_SIZE = 10_000; + +interface PendingRoute { + method: string; + path: string; + value: T; +} + +interface RegistrationSnapshot { + staticByMethod: Array | undefined>; + staticPathMethodMask: Record; + segmentTrees: Array; + handlers: T[]; + terminalSlab: Int32Array; + paramsFactories: Array<((presentBitmask: number, u: string, v: Int32Array) => RouteParams) | null>; + maxParamsObserved: number; +} + +interface BuildState { + staticByMethod: Array | undefined>; + staticPathMethodMask: Record; + segmentTrees: Array; + handlers: T[]; + terminalHandlers: number[]; + isWildcardByTerminal: boolean[]; + paramsFactories: Array<((presentBitmask: number, u: string, v: Int32Array) => RouteParams) | null>; + presentBitmaskByTerminal: number[]; + testerCache: Map; + routeCounter: number; + maxParamsObserved: number; +} + +class Registration { + private readonly methodRegistry: MethodRegistry; + private readonly pathParser: PathParser; + private readonly pendingRoutes: Array> = []; + + private snapshot: RegistrationSnapshot | null = null; + private sealed = false; + private prefixIndex: WildcardPrefixIndex | null = null; + private identityRegistry: IdentityRegistry | null = null; + private routeIdCounter = 0; + + constructor(methodRegistry: MethodRegistry, pathParser: PathParser) { + this.methodRegistry = methodRegistry; + this.pathParser = pathParser; + } + + isSealed(): boolean { + return this.sealed; + } + + add(method: string | readonly string[], path: string, value: T): void { + this.assertNotSealed({ path, method: Array.isArray(method) ? method[0] : (method as string) }); + + if (Array.isArray(method)) { + for (const m of method) { + this.pendingRoutes.push({ method: m, path, value }); + } + return; + } + + if (method === '*') { + this.pendingRoutes.push({ method: WILDCARD_METHOD, path, value }); + return; + } + + this.pendingRoutes.push({ method: method as string, path, value }); + } + + addAll(entries: ReadonlyArray): void { + this.assertNotSealed({ registeredCount: 0 }); + + for (const [method, path, value] of entries) { + this.pendingRoutes.push({ method, path, value }); + } + } + + seal( + options: { + omitMissingOptional?: boolean; + } = {}, + ): RegistrationSnapshot { + if (this.snapshot !== null) { + return this.snapshot; + } + + const methodRegistrySnapshot = this.methodRegistry.snapshot(); + const state = createBuildState(); + const undo: SegmentTreeUndoLog = []; + const omitBehavior = options.omitMissingOptional ?? true; + + this.prefixIndex = new WildcardPrefixIndex(); + this.identityRegistry = new IdentityRegistry(); + this.routeIdCounter = 0; + + expandWildcardMethodRoutes(this.pendingRoutes, this.methodRegistry); + + const issues = this.compileAllRoutes(state, undo, omitBehavior); + + if (issues.length > 0) { + this.abortBuild(undo, methodRegistrySnapshot, issues); + } + + this.sealed = true; + this.pendingRoutes.length = 0; + + const snapshot = this.packSnapshot(state); + this.snapshot = snapshot; + this.prefixIndex = null; + this.identityRegistry = null; + + applyTenantFactors(state.segmentTrees); + + return snapshot; + } + + private compileAllRoutes(state: BuildState, undo: SegmentTreeUndoLog, omitBehavior: boolean): RouteValidationIssue[] { + const issues: RouteValidationIssue[] = []; + const factoryCache: FactoryCache = createFactoryCache(); + + for (let i = 0; i < this.pendingRoutes.length; i++) { + const route = this.pendingRoutes[i]!; + const mark = undo.length; + const handlerMark = state.handlers.length; + const terminalMark = state.terminalHandlers.length; + const factoryMark = state.paramsFactories.length; + const maxParamsMark = state.maxParamsObserved; + const routeID = state.routeCounter++; + + const result = this.compileRoute(route, state, undo, routeID, factoryCache, omitBehavior, decoder); + + if (isErr(result)) { + rollback(undo, mark); + state.handlers.length = handlerMark; + state.terminalHandlers.length = terminalMark; + state.isWildcardByTerminal.length = terminalMark; + state.paramsFactories.length = factoryMark; + state.presentBitmaskByTerminal.length = terminalMark; + state.maxParamsObserved = maxParamsMark; + state.routeCounter--; + issues.push({ + index: i, + method: route.method, + path: route.path, + error: { ...result.data, method: route.method, path: route.path }, + }); + } + + if ((i + 1) % BUILD_CHUNK_SIZE === 0 && i + 1 < this.pendingRoutes.length) { + if (issues.length === 0) { + undo.length = 0; + } + Bun.gc(true); + } + } + + return issues; + } + + private abortBuild( + undo: SegmentTreeUndoLog, + methodRegistrySnapshot: ReturnType, + issues: RouteValidationIssue[], + ): never { + rollback(undo, 0); + this.methodRegistry.restore(methodRegistrySnapshot); + this.prefixIndex = null; + this.identityRegistry = null; + + throw new RouterError({ + kind: RouterErrorKind.RouteValidation, + message: `${issues.length} route(s) failed validation during build().`, + errors: issues, + }); + } + + private packSnapshot(state: BuildState): RegistrationSnapshot { + const terminalSlab = packTerminalSlab(state.terminalHandlers, state.isWildcardByTerminal, state.presentBitmaskByTerminal); + + return { + staticByMethod: state.staticByMethod, + staticPathMethodMask: state.staticPathMethodMask, + segmentTrees: Object.freeze([...state.segmentTrees]) as Array, + handlers: state.handlers, + terminalSlab, + paramsFactories: state.paramsFactories, + maxParamsObserved: state.maxParamsObserved, + }; + } + + private assertNotSealed(ctx: { path?: string; method?: string; registeredCount?: number }): void { + if (!this.sealed) { + return; + } + + throw new RouterError({ + kind: RouterErrorKind.RouterSealed, + message: 'Cannot add routes after build(). The router is sealed.', + suggestion: 'Create a new Router instance to add more routes', + ...ctx, + }); + } + + private compileRoute( + route: PendingRoute, + state: BuildState, + undo: SegmentTreeUndoLog, + routeID: number, + factoryCache: FactoryCache, + omitBehavior: boolean, + decoder: (s: string) => string, + ): Result { + const offsetResult = this.methodRegistry.getOrCreate(route.method); + + if (isErr(offsetResult)) { + return err({ ...offsetResult.data, path: route.path }); + } + + const parseResult = this.pathParser.parse(route.path); + + if (isErr(parseResult)) { + return err({ + ...parseResult.data, + path: route.path, + method: route.method, + }); + } + + const { parts, normalized, isDynamic } = parseResult; + const methodCode = offsetResult; + + if (!isDynamic) { + return this.compileStaticRoute(route, parts, normalized, methodCode, state, undo); + } + + return this.compileDynamicRoute(route, parts, methodCode, state, undo, routeID, factoryCache, omitBehavior, decoder); + } + + private compileStaticRoute( + route: PendingRoute, + parts: PathPart[], + normalized: string, + methodCode: number, + state: BuildState, + undo: SegmentTreeUndoLog, + ): Result { + const conflict = this.runPrefixIndexPlan(parts, methodCode, route, undo); + + if (isErr(conflict)) { + return conflict; + } + + let bucket = state.staticByMethod[methodCode]; + if (bucket === undefined) { + bucket = Object.create(null) as Record; + state.staticByMethod[methodCode] = bucket; + pushStaticBucketResetUndo(undo, state.staticByMethod, methodCode); + } + + if (normalized in bucket) { + return err({ + kind: RouterErrorKind.RouteDuplicate, + message: `Route already exists: ${route.method} ${normalized}`, + path: route.path, + method: route.method, + suggestion: 'Use a different path or HTTP method', + }); + } + + bucket[normalized] = route.value; + const prevMask = state.staticPathMethodMask[normalized] ?? 0; + state.staticPathMethodMask[normalized] = prevMask | (1 << methodCode); + pushStaticMapDeleteUndo(undo, bucket, normalized); + undo.push({ + k: UndoKind.StaticPathMaskRestore, + map: state.staticPathMethodMask, + key: normalized, + prevMask, + }); + return undefined; + } + + private compileDynamicRoute( + route: PendingRoute, + parts: PathPart[], + methodCode: number, + state: BuildState, + undo: SegmentTreeUndoLog, + routeID: number, + factoryCache: FactoryCache, + omitBehavior: boolean, + decoder: (s: string) => string, + ): Result { + const shape = collectRouteShape(parts); + const capCheck = checkDynamicRouteCaps(route, shape); + if (capCheck !== undefined) { + return err(capCheck); + } + + const root = ensureSegmentTreeRoot(state, methodCode, undo); + const hIdx = pushHandler(state, route.value, undo); + const expansion = expandOptional(parts); + + for (const expanded of expansion) { + const prefixCheck = this.runPrefixIndexPlan(expanded.parts, methodCode, route, undo, hIdx, expanded.isOptionalExpansion); + if (isErr(prefixCheck)) { + return prefixCheck; + } + + const tIdx = recordExpansionTerminal(state, expanded.parts, shape, hIdx, factoryCache, omitBehavior, decoder, undo); + + const insertResult = insertIntoSegmentTree(root, expanded.parts, tIdx, state.testerCache, routeID, undo); + if (isErr(insertResult)) { + const data = insertResult.data; + if (data.kind === RouterErrorKind.RouteDuplicate) { + data.message = `Route already exists: ${route.method} ${route.path}`; + } + return err({ ...data, path: route.path, method: route.method }); + } + } + return undefined; + } + + private runPrefixIndexPlan( + parts: PathPart[], + methodCode: number, + route: PendingRoute, + undo: SegmentTreeUndoLog, + handlerSlotId: number = -1, + isOptionalExpansion: boolean = false, + ): Result { + const idx = this.prefixIndex!; + const registry = this.identityRegistry!; + const handlerId = handlerSlotId >= 0 ? handlerSlotId : registry.idFor(route.value); + const meta: RouteMeta = { + routeIndex: this.routeIdCounter++, + path: route.path, + method: route.method, + handlerId, + isOptionalExpansion, + }; + const planResult = idx.planAndCommit(methodCode, parts, meta); + if (isErr(planResult)) { + return err({ ...planResult.data, path: route.path, method: route.method }); + } + if (planResult === 'alias') { + return undefined; + } + undo.push({ + k: UndoKind.PrefixIndexPlan, + rollback: rollbackPlan as (plan: unknown) => void, + plan: planResult as CommitPlan, + }); + return undefined; + } +} + +function createBuildState(): BuildState { + return { + staticByMethod: [], + staticPathMethodMask: Object.create(null) as Record, + segmentTrees: [], + handlers: [], + terminalHandlers: [], + isWildcardByTerminal: [], + paramsFactories: [], + presentBitmaskByTerminal: [], + testerCache: new Map(), + routeCounter: 0, + maxParamsObserved: 0, + }; +} + +function applyTenantFactors(segmentTrees: ReadonlyArray): void { + let factorApplied = false; + for (const root of segmentTrees) { + if (root === undefined || root === null) { + continue; + } + const factor = detectTenantFactor(root); + if (factor === null) { + continue; + } + setTenantFactor(root, factor); + root.staticChildren = null; + root.singleChildKey = null; + root.singleChildNext = null; + factorApplied = true; + } + if (factorApplied) { + Bun.gc(true); + } +} + +function rollback(undo: SegmentTreeUndoLog, mark: number): void { + for (let i = undo.length - 1; i >= mark; i--) { + applyUndo(undo[i]!); + } + + undo.length = mark; +} + +interface RouteShape { + originalNames: ReadonlyArray; + originalTypes: ReadonlyArray; + optionalCount: number; +} + +function collectRouteShape(parts: ReadonlyArray): RouteShape { + const originalNames: string[] = []; + const originalTypes: Array = []; + let optionalCount = 0; + for (const p of parts) { + if (p.type === PathPartType.Param) { + originalNames.push(p.name); + originalTypes.push(PathPartType.Param); + if (p.optional) { + optionalCount++; + } + } else if (p.type === PathPartType.Wildcard) { + originalNames.push(p.name); + originalTypes.push(PathPartType.Wildcard); + } + } + return { originalNames, originalTypes, optionalCount }; +} + +function checkDynamicRouteCaps(route: { path: string }, shape: RouteShape): RouterErrorData | undefined { + if (shape.optionalCount > MAX_OPTIONAL_SEGMENTS_PER_ROUTE) { + return { + kind: RouterErrorKind.RouteParse, + message: `Route has ${shape.optionalCount} optional segments; maximum is ${MAX_OPTIONAL_SEGMENTS_PER_ROUTE} to cap expansion variants before 2^N growth.`, + path: route.path, + suggestion: `Reduce optional segments to ${MAX_OPTIONAL_SEGMENTS_PER_ROUTE} or fewer, or register explicit routes for the rare combinations.`, + }; + } + if (shape.originalNames.length > 31) { + return { + kind: RouterErrorKind.RouteParse, + message: `Route has ${shape.originalNames.length} capturing segments; maximum is 31 (Int32 bitmask ceiling).`, + path: route.path, + suggestion: 'Reduce the number of :param/*wildcard segments per route.', + }; + } + return undefined; +} + +function ensureSegmentTreeRoot(state: BuildState, methodCode: number, undo: SegmentTreeUndoLog): SegmentNode { + const existing = state.segmentTrees[methodCode]; + if (existing !== undefined && existing !== null) { + return existing; + } + const fresh = createSegmentNode(); + state.segmentTrees[methodCode] = fresh; + undo.push({ k: UndoKind.SegmentTreeReset, trees: state.segmentTrees, mc: methodCode }); + return fresh; +} + +function pushHandler(state: BuildState, value: T, undo: SegmentTreeUndoLog): number { + const hIdx = state.handlers.length; + state.handlers.push(value); + undo.push({ k: UndoKind.HandlersTruncate, arr: state.handlers, len: hIdx }); + return hIdx; +} + +function recordExpansionTerminal( + state: BuildState, + expParts: ReadonlyArray, + shape: RouteShape, + hIdx: number, + factoryCache: FactoryCache, + omitBehavior: boolean, + decoder: (s: string) => string, + undo: SegmentTreeUndoLog, +): number { + const present: Array<{ name: string; type: PathPartType.Param | PathPartType.Wildcard }> = []; + for (const p of expParts) { + if (p.type === PathPartType.Param || p.type === PathPartType.Wildcard) { + present.push({ name: p.name, type: p.type }); + } + } + if (present.length > state.maxParamsObserved) { + state.maxParamsObserved = present.length; + } + + const tIdx = state.terminalHandlers.length; + const isWildcard = expParts.length > 0 && expParts[expParts.length - 1]!.type === PathPartType.Wildcard; + const presentBitmask = computePresentBitmask(shape.originalNames, present); + const factory = + present.length > 0 || (!omitBehavior && shape.originalNames.length > 0) + ? getOrCreateSuperFactory(factoryCache, shape.originalNames, shape.originalTypes, omitBehavior, decoder) + : null; + + state.terminalHandlers[tIdx] = hIdx; + state.isWildcardByTerminal[tIdx] = isWildcard; + state.paramsFactories[tIdx] = factory; + state.presentBitmaskByTerminal[tIdx] = presentBitmask; + undo.push({ + k: UndoKind.TerminalArraysTruncate, + t: state.terminalHandlers, + w: state.isWildcardByTerminal, + f: state.paramsFactories, + b: state.presentBitmaskByTerminal, + len: tIdx, + }); + return tIdx; +} + +export { checkDynamicRouteCaps, collectRouteShape, Registration }; +export type { RegistrationSnapshot }; diff --git a/packages/router/src/pipeline/terminal-slab.spec.ts b/packages/router/src/pipeline/terminal-slab.spec.ts new file mode 100644 index 0000000..b205a9f --- /dev/null +++ b/packages/router/src/pipeline/terminal-slab.spec.ts @@ -0,0 +1,66 @@ +import { describe, expect, it } from 'bun:test'; + +import { + TERMINAL_HANDLER_OFFSET, + TERMINAL_IS_WILDCARD_OFFSET, + TERMINAL_PRESENT_BITMASK_OFFSET, + TERMINAL_SLOTS, + packTerminalSlab, +} from './terminal-slab'; + +describe('terminal-slab layout constants', () => { + it('uses 3 slots per terminal', () => { + expect(TERMINAL_SLOTS).toBe(3); + }); + + it('handler offset is 0, isWildcard is 1, presentBitmask is 2', () => { + expect(TERMINAL_HANDLER_OFFSET).toBe(0); + expect(TERMINAL_IS_WILDCARD_OFFSET).toBe(1); + expect(TERMINAL_PRESENT_BITMASK_OFFSET).toBe(2); + }); +}); + +describe('packTerminalSlab', () => { + it('returns an empty Int32Array for an empty input', () => { + const slab = packTerminalSlab([], [], []); + expect(slab).toBeInstanceOf(Int32Array); + expect(slab.length).toBe(0); + }); + + it('packs a single terminal in slot order [handler, isWildcard, bitmask]', () => { + const slab = packTerminalSlab([42], [false], [0b101]); + expect(slab.length).toBe(3); + expect(slab[0]).toBe(42); + expect(slab[1]).toBe(0); + expect(slab[2]).toBe(0b101); + }); + + it('converts true/false to 1/0 in the isWildcard slot', () => { + const slab = packTerminalSlab([1, 2], [true, false], [0, 0]); + expect(slab[TERMINAL_IS_WILDCARD_OFFSET]).toBe(1); + expect(slab[TERMINAL_SLOTS + TERMINAL_IS_WILDCARD_OFFSET]).toBe(0); + }); + + it('defaults a missing presentBitmask entry to 0', () => { + const sparseBitmasks: number[] = []; + sparseBitmasks.length = 2; + sparseBitmasks[1] = 0b11; + const slab = packTerminalSlab([7, 8], [false, false], sparseBitmasks); + expect(slab[0 + TERMINAL_PRESENT_BITMASK_OFFSET]).toBe(0); + expect(slab[1 * TERMINAL_SLOTS + TERMINAL_PRESENT_BITMASK_OFFSET]).toBe(0b11); + }); + + it('packs multiple terminals with stable slot ordering', () => { + const slab = packTerminalSlab([10, 20, 30], [false, true, false], [0, 0b10, 0b1]); + expect(slab.length).toBe(9); + expect(slab[0]).toBe(10); + expect(slab[1]).toBe(0); + expect(slab[2]).toBe(0); + expect(slab[3]).toBe(20); + expect(slab[4]).toBe(1); + expect(slab[5]).toBe(0b10); + expect(slab[6]).toBe(30); + expect(slab[7]).toBe(0); + expect(slab[8]).toBe(0b1); + }); +}); diff --git a/packages/router/src/pipeline/terminal-slab.ts b/packages/router/src/pipeline/terminal-slab.ts new file mode 100644 index 0000000..fe61f75 --- /dev/null +++ b/packages/router/src/pipeline/terminal-slab.ts @@ -0,0 +1,19 @@ +export const TERMINAL_SLOTS = 3; +export const TERMINAL_HANDLER_OFFSET = 0; +export const TERMINAL_IS_WILDCARD_OFFSET = 1; +export const TERMINAL_PRESENT_BITMASK_OFFSET = 2; + +export function packTerminalSlab( + terminalHandlers: ReadonlyArray, + isWildcardByTerminal: ReadonlyArray, + presentBitmaskByTerminal: ReadonlyArray, +): Int32Array { + const terminalCount = terminalHandlers.length; + const slab = new Int32Array(terminalCount * TERMINAL_SLOTS); + for (let t = 0; t < terminalCount; t++) { + slab[t * TERMINAL_SLOTS + TERMINAL_HANDLER_OFFSET] = terminalHandlers[t]!; + slab[t * TERMINAL_SLOTS + TERMINAL_IS_WILDCARD_OFFSET] = isWildcardByTerminal[t] ? 1 : 0; + slab[t * TERMINAL_SLOTS + TERMINAL_PRESENT_BITMASK_OFFSET] = presentBitmaskByTerminal[t] ?? 0; + } + return slab; +} diff --git a/packages/router/src/pipeline/wildcard-method-expand.spec.ts b/packages/router/src/pipeline/wildcard-method-expand.spec.ts new file mode 100644 index 0000000..1d47f97 --- /dev/null +++ b/packages/router/src/pipeline/wildcard-method-expand.spec.ts @@ -0,0 +1,87 @@ +import { describe, expect, it } from 'bun:test'; + +import { MethodRegistry } from '../method-registry'; +import { WILDCARD_METHOD, expandWildcardMethodRoutes } from './wildcard-method-expand'; + +interface Pending { + method: string; + path: string; + value: string; +} + +function makeRegistry(extraMethods: string[] = []): MethodRegistry { + const registry = new MethodRegistry(); + for (const m of extraMethods) { + registry.getOrCreate(m); + } + return registry; +} + +describe('WILDCARD_METHOD constant', () => { + it('is the literal "*"', () => { + expect(WILDCARD_METHOD).toBe('*'); + }); +}); + +describe('expandWildcardMethodRoutes — short-circuits when no * present', () => { + it('leaves the array untouched if no entry has method === "*"', () => { + const routes: Pending[] = [ + { method: 'GET', path: '/a', value: 'a' }, + { method: 'POST', path: '/b', value: 'b' }, + ]; + const before = routes.slice(); + expandWildcardMethodRoutes(routes, makeRegistry()); + expect(routes).toEqual(before); + }); +}); + +describe('expandWildcardMethodRoutes — fans out * across registered methods', () => { + it('replaces a single * with one entry per registered method (7 defaults)', () => { + const routes: Pending[] = [{ method: '*', path: '/x', value: 'x' }]; + expandWildcardMethodRoutes(routes, makeRegistry()); + expect(routes.length).toBe(7); + const methods = routes.map(r => r.method).sort(); + expect(methods).toEqual(['DELETE', 'GET', 'HEAD', 'OPTIONS', 'PATCH', 'POST', 'PUT']); + expect(routes.every(r => r.path === '/x')).toBe(true); + expect(routes.every(r => r.value === 'x')).toBe(true); + }); + + it('includes custom methods already registered in the registry', () => { + const routes: Pending[] = [{ method: '*', path: '/x', value: 'x' }]; + expandWildcardMethodRoutes(routes, makeRegistry(['PURGE'])); + expect(routes.map(r => r.method)).toContain('PURGE'); + }); + + it('includes custom methods first observed via non-* pending routes', () => { + const routes: Pending[] = [ + { method: 'PURGE', path: '/p', value: 'p' }, + { method: '*', path: '/x', value: 'x' }, + ]; + expandWildcardMethodRoutes(routes, makeRegistry()); + const xMethods = routes.filter(r => r.path === '/x').map(r => r.method); + expect(xMethods).toContain('PURGE'); + }); + + it('preserves non-* entries verbatim in their original order alongside expansions', () => { + const routes: Pending[] = [ + { method: 'GET', path: '/a', value: 'a' }, + { method: '*', path: '/x', value: 'x' }, + { method: 'POST', path: '/b', value: 'b' }, + ]; + expandWildcardMethodRoutes(routes, makeRegistry()); + expect(routes[0]).toEqual({ method: 'GET', path: '/a', value: 'a' }); + expect(routes[routes.length - 1]).toEqual({ method: 'POST', path: '/b', value: 'b' }); + }); + + it('handles multiple * entries independently', () => { + const routes: Pending[] = [ + { method: '*', path: '/x', value: 'x' }, + { method: '*', path: '/y', value: 'y' }, + ]; + expandWildcardMethodRoutes(routes, makeRegistry()); + const xRoutes = routes.filter(r => r.path === '/x'); + const yRoutes = routes.filter(r => r.path === '/y'); + expect(xRoutes.length).toBe(7); + expect(yRoutes.length).toBe(7); + }); +}); diff --git a/packages/router/src/pipeline/wildcard-method-expand.ts b/packages/router/src/pipeline/wildcard-method-expand.ts new file mode 100644 index 0000000..3fb2ab7 --- /dev/null +++ b/packages/router/src/pipeline/wildcard-method-expand.ts @@ -0,0 +1,51 @@ +import type { MethodRegistry } from '../method-registry'; + +const WILDCARD_METHOD = '*' as const; + +interface MethodPending { + method: string; +} + +function expandWildcardMethodRoutes(pendingRoutes: T[], methodRegistry: MethodRegistry): void { + let hasWildcardMethod = false; + for (let i = 0; i < pendingRoutes.length; i++) { + if (pendingRoutes[i]!.method === WILDCARD_METHOD) { + hasWildcardMethod = true; + break; + } + } + if (!hasWildcardMethod) { + return; + } + + const sealMethods: string[] = []; + const seen = new Set(); + for (const [name] of methodRegistry.getAllCodes()) { + sealMethods.push(name); + seen.add(name); + } + for (const r of pendingRoutes) { + if (r.method !== WILDCARD_METHOD && !seen.has(r.method)) { + seen.add(r.method); + sealMethods.push(r.method); + } + } + + const expanded: T[] = []; + for (const r of pendingRoutes) { + if (r.method === WILDCARD_METHOD) { + for (const m of sealMethods) { + expanded.push({ ...r, method: m }); + } + } else { + expanded.push(r); + } + } + + pendingRoutes.length = expanded.length; + for (let i = 0; i < expanded.length; i++) { + pendingRoutes[i] = expanded[i]!; + } +} + +export { expandWildcardMethodRoutes, WILDCARD_METHOD }; diff --git a/packages/router/src/pipeline/wildcard-prefix-index.spec.ts b/packages/router/src/pipeline/wildcard-prefix-index.spec.ts new file mode 100644 index 0000000..fa3b88a --- /dev/null +++ b/packages/router/src/pipeline/wildcard-prefix-index.spec.ts @@ -0,0 +1,143 @@ +import { describe, expect, it } from 'bun:test'; + +import type { PathPart } from '../tree'; +import type { RouteMeta } from './wildcard-prefix-index'; + +import { expectOk, expectErrData, expectNotAlias } from '../../test/test-utils'; +import { PathPartType, WildcardOrigin } from '../tree'; +import { RouterErrorKind } from '../types'; +import { WildcardPrefixIndex, rollbackPlan } from './wildcard-prefix-index'; + +let nextHandlerId = 0; + +function meta(method: string, path: string, isOptionalExpansion = false): RouteMeta { + return { + routeIndex: nextHandlerId, + path, + method, + handlerId: nextHandlerId++, + isOptionalExpansion, + }; +} + +const STATIC_USERS: PathPart = { type: PathPartType.Static, value: '/users', segments: ['users'] }; +const STATIC_X: PathPart = { type: PathPartType.Static, value: '/x', segments: ['x'] }; +const STATIC_FILES: PathPart = { type: PathPartType.Static, value: '/files', segments: ['files'] }; +const PARAM_ID: PathPart = { type: PathPartType.Param, name: 'id', pattern: null, optional: false }; +const PARAM_SLUG: PathPart = { type: PathPartType.Param, name: 'slug', pattern: null, optional: false }; +const PARAM_DIGITS: PathPart = { type: PathPartType.Param, name: 'id', pattern: '\\d+', optional: false }; +const PARAM_LETTERS: PathPart = { type: PathPartType.Param, name: 'id', pattern: '[a-z]+', optional: false }; +const WILDCARD_TAIL: PathPart = { type: PathPartType.Wildcard, name: 'rest', origin: WildcardOrigin.Star }; + +describe('planAndCommit — successful commits', () => { + it('commits a single static route and returns a CommitPlan', () => { + const idx = new WildcardPrefixIndex(); + const result = idx.planAndCommit(0, [STATIC_USERS], meta('GET', '/users')); + const plan = expectNotAlias(expectOk(result)); + expect(plan.visited.length).toBeGreaterThan(0); + expect(plan.hasWildcardTail).toBe(false); + }); + + it('reuses the existing literal child on a repeat segment insert', () => { + const idx = new WildcardPrefixIndex(); + idx.planAndCommit(0, [STATIC_USERS, PARAM_ID], meta('GET', '/users/:id')); + const result = idx.planAndCommit(0, [STATIC_USERS, PARAM_SLUG], meta('GET', '/users/:slug')); + expectErrData(result); + }); + + it('commits a wildcard-tail route and flags the plan', () => { + const idx = new WildcardPrefixIndex(); + const result = idx.planAndCommit(0, [STATIC_FILES, WILDCARD_TAIL], meta('GET', '/files/*rest')); + const plan = expectNotAlias(expectOk(result)); + expect(plan.hasWildcardTail).toBe(true); + expect(plan.wildcardTailName).toBe('rest'); + }); + + it('keeps trees isolated per methodCode', () => { + const idx = new WildcardPrefixIndex(); + idx.planAndCommit(0, [STATIC_FILES, WILDCARD_TAIL], meta('GET', '/files/*rest')); + const result = idx.planAndCommit(1, [STATIC_FILES, WILDCARD_TAIL], meta('POST', '/files/*upload')); + expectOk(result); + }); +}); + +describe('planAndCommit — conflict rejections', () => { + it('returns route-unreachable when a static segment follows an ancestor wildcard', () => { + const idx = new WildcardPrefixIndex(); + idx.planAndCommit(0, [STATIC_FILES, WILDCARD_TAIL], meta('GET', '/files/*rest')); + const result = idx.planAndCommit(0, [STATIC_FILES, STATIC_X], meta('GET', '/files/x')); + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.RouteUnreachable); + }); + + it('returns route-duplicate when the same plain-param name conflicts on a different name', () => { + const idx = new WildcardPrefixIndex(); + idx.planAndCommit(0, [STATIC_USERS, PARAM_ID], meta('GET', '/users/:id')); + const result = idx.planAndCommit(0, [STATIC_USERS, PARAM_SLUG], meta('GET', '/users/:slug')); + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.RouteDuplicate); + }); + + it('returns route-conflict when a plain param is added next to a regex param sibling', () => { + const idx = new WildcardPrefixIndex(); + idx.planAndCommit(0, [STATIC_USERS, PARAM_DIGITS], meta('GET', '/users/:id(\\d+)')); + const result = idx.planAndCommit(0, [STATIC_USERS, PARAM_SLUG], meta('GET', '/users/:slug')); + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.RouteConflict); + }); + + it('returns route-conflict when distinct regex patterns clash as siblings', () => { + const idx = new WildcardPrefixIndex(); + idx.planAndCommit(0, [STATIC_USERS, PARAM_DIGITS], meta('GET', '/users/:id(\\d+)')); + const result = idx.planAndCommit(0, [STATIC_USERS, PARAM_LETTERS], meta('GET', '/users/:id([a-z]+)')); + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.RouteConflict); + }); + + it('returns route-duplicate for a same-prefix terminal collision', () => { + const idx = new WildcardPrefixIndex(); + idx.planAndCommit(0, [STATIC_USERS], meta('GET', '/users')); + const result = idx.planAndCommit(0, [STATIC_USERS], meta('GET', '/users')); + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.RouteDuplicate); + }); + + it('returns route-unreachable when a wildcard is registered where a descendant terminal exists', () => { + const idx = new WildcardPrefixIndex(); + idx.planAndCommit(0, [STATIC_FILES, STATIC_X], meta('GET', '/files/x')); + const result = idx.planAndCommit(0, [STATIC_FILES, WILDCARD_TAIL], meta('GET', '/files/*rest')); + const data = expectErrData(result); + expect(data.kind).toBe(RouterErrorKind.RouteUnreachable); + }); +}); + +describe('planAndCommit — optional-expansion aliasing', () => { + it('returns "alias" when an optional-expansion duplicate has the same identity', () => { + const idx = new WildcardPrefixIndex(); + const first = meta('GET', '/users/:id', true); + idx.planAndCommit(0, [STATIC_USERS, PARAM_ID], first); + const sameIdentity: RouteMeta = { ...first }; + const result = idx.planAndCommit(0, [STATIC_USERS, PARAM_ID], sameIdentity); + expect(result).toBe('alias'); + }); +}); + +describe('rollbackPlan — clean detachment', () => { + it('removes the committed terminal and lets the same prefix re-commit cleanly', () => { + const idx = new WildcardPrefixIndex(); + const first = idx.planAndCommit(0, [STATIC_USERS, PARAM_ID], meta('GET', '/users/:id')); + rollbackPlan(expectNotAlias(expectOk(first))); + + const retry = idx.planAndCommit(0, [STATIC_USERS, PARAM_ID], meta('GET', '/users/:id')); + expectOk(retry); + }); + + it('removes the wildcard tail and lets a descendant terminal commit afterwards', () => { + const idx = new WildcardPrefixIndex(); + const wildPlan = idx.planAndCommit(0, [STATIC_FILES, WILDCARD_TAIL], meta('GET', '/files/*rest')); + rollbackPlan(expectNotAlias(expectOk(wildPlan))); + + const retry = idx.planAndCommit(0, [STATIC_FILES, STATIC_X], meta('GET', '/files/x')); + expectOk(retry); + }); +}); diff --git a/packages/router/src/pipeline/wildcard-prefix-index.ts b/packages/router/src/pipeline/wildcard-prefix-index.ts new file mode 100644 index 0000000..d0ed4a4 --- /dev/null +++ b/packages/router/src/pipeline/wildcard-prefix-index.ts @@ -0,0 +1,389 @@ +import type { Result } from '@zipbul/result'; + +import { err } from '@zipbul/result'; + +import type { PathPart } from '../tree'; +import type { RouterErrorData } from '../types'; + +import { PathPartType } from '../tree'; +import { RouterErrorKind } from '../types'; + +interface PrefixTrieNode { + literalChildren: Record | null; + paramChild: PrefixTrieNode | null; + paramName: string | null; + terminalMeta: RouteMeta | null; + subtreeTerminalCount: number; + subtreeWildcardCount: number; +} + +const regexParamChildrenStore = new WeakMap(); +const regexAstStore = new WeakMap(); +const wildcardNameStore = new WeakMap(); + +function getRegexParamChildren(node: PrefixTrieNode): PrefixTrieNode[] | null { + return regexParamChildrenStore.get(node) ?? null; +} +function setRegexParamChildren(node: PrefixTrieNode, value: PrefixTrieNode[] | null): void { + if (value === null) { + regexParamChildrenStore.delete(node); + } else { + regexParamChildrenStore.set(node, value); + } +} +function getRegexAst(node: PrefixTrieNode): string | null { + return regexAstStore.get(node) ?? null; +} +function setRegexAst(node: PrefixTrieNode, value: string): void { + regexAstStore.set(node, value); +} +function getWildcardName(node: PrefixTrieNode): string | null { + return wildcardNameStore.get(node) ?? null; +} +function setWildcardName(node: PrefixTrieNode, value: string | null): void { + if (value === null) { + wildcardNameStore.delete(node); + } else { + wildcardNameStore.set(node, value); + } +} + +interface RouteMeta { + routeIndex: number; + path: string; + method: string; + handlerId: number; + isOptionalExpansion: boolean; +} + +interface CommitPlan { + visited: PrefixTrieNode[]; + freshLiteralEdges: Array<{ parent: PrefixTrieNode; key: string; literalChildrenWasNull: boolean }> | null; + freshParamParents: PrefixTrieNode[] | null; + freshRegexParents: Array<{ parent: PrefixTrieNode; createdArray: boolean }> | null; + hasWildcardTail: boolean; + wildcardTailName: string | null; +} + +class WildcardPrefixIndex { + private readonly roots = new Map(); + + planAndCommit( + methodCode: number, + parts: ReadonlyArray, + routeMeta: RouteMeta, + ): Result { + const root = this.rootFor(methodCode); + const visited: PrefixTrieNode[] = [root]; + let freshLiteralEdges: CommitPlan['freshLiteralEdges'] = null; + let freshParamParents: CommitPlan['freshParamParents'] = null; + let freshRegexParents: CommitPlan['freshRegexParents'] = null; + const partial: CommitPlan = { + visited, + freshLiteralEdges: null, + freshParamParents: null, + freshRegexParents: null, + hasWildcardTail: false, + wildcardTailName: null, + }; + + let node = root; + let wildcardTailName: string | null = null; + + const abort = (data: RouterErrorData): Result => { + partial.freshLiteralEdges = freshLiteralEdges; + partial.freshParamParents = freshParamParents; + partial.freshRegexParents = freshRegexParents; + applyRevert(partial, false); + return err(data); + }; + + for (let pi = 0; pi < parts.length; pi++) { + const part = parts[pi]!; + if (part.type === PathPartType.Static) { + const segs = part.segments; + for (let si = 0; si < segs.length; si++) { + const seg = segs[si]!; + if (seg.length === 0) { + continue; + } + if (getWildcardName(node) !== null) { + return abort(routeUnreachable('ancestor wildcard makes this route unreachable', routeMeta)); + } + let children = node.literalChildren; + let child = children !== null ? children[seg] : undefined; + if (child !== undefined) { + node = child; + } else { + const literalChildrenWasNull = children === null; + if (literalChildrenWasNull) { + children = Object.create(null) as Record; + node.literalChildren = children; + } + child = createNode(); + children![seg] = child; + if (freshLiteralEdges === null) { + freshLiteralEdges = []; + } + freshLiteralEdges.push({ parent: node, key: seg, literalChildrenWasNull }); + node = child; + } + visited.push(node); + } + } else if (part.type === PathPartType.Param) { + if (getWildcardName(node) !== null) { + return abort(routeUnreachable('ancestor wildcard makes this route unreachable', routeMeta)); + } + if (part.pattern !== null) { + if (node.paramChild !== null) { + return abort(routeConflict('a plain param sibling already covers this segment', routeMeta)); + } + let siblings = getRegexParamChildren(node); + let matched: PrefixTrieNode | null = null; + if (siblings !== null) { + for (let i = 0; i < siblings.length; i++) { + const ex = siblings[i]!; + if (getRegexAst(ex) === part.pattern) { + matched = ex; + break; + } + } + } + if (matched === null && siblings !== null && siblings.length > 0) { + return abort(routeConflict('regex param sibling overlap not provably disjoint', routeMeta)); + } + if (matched !== null) { + node = matched; + } else { + const fresh = createRegexNode(part.pattern); + const createdArray = siblings === null; + if (createdArray) { + siblings = []; + setRegexParamChildren(node, siblings); + } + siblings!.push(fresh); + if (freshRegexParents === null) { + freshRegexParents = []; + } + freshRegexParents.push({ parent: node, createdArray }); + node = fresh; + } + visited.push(node); + } else { + const existingRegexSiblings = getRegexParamChildren(node); + if (existingRegexSiblings !== null && existingRegexSiblings.length > 0) { + return abort(routeConflict('a regex param sibling already covers this segment', routeMeta)); + } + if (node.paramChild !== null && node.paramName !== part.name) { + return abort(routeDuplicate(routeMeta)); + } + if (node.paramChild !== null) { + node = node.paramChild; + } else { + const fresh = createNode(); + node.paramName = part.name; + node.paramChild = fresh; + if (freshParamParents === null) { + freshParamParents = []; + } + freshParamParents.push(node); + node = fresh; + } + visited.push(node); + } + } else { + wildcardTailName = part.name; + } + } + + partial.freshLiteralEdges = freshLiteralEdges; + partial.freshParamParents = freshParamParents; + partial.freshRegexParents = freshRegexParents; + partial.hasWildcardTail = wildcardTailName !== null; + partial.wildcardTailName = wildcardTailName; + + const attachResult = + wildcardTailName !== null + ? attachWildcardTail(node, wildcardTailName, visited, partial, routeMeta) + : attachTerminal(node, visited, partial, routeMeta); + if (attachResult !== undefined) { + return attachResult; + } + + return partial; + } + + private rootFor(methodCode: number): PrefixTrieNode { + let r = this.roots.get(methodCode); + if (r === undefined) { + r = createNode(); + this.roots.set(methodCode, r); + } + return r; + } +} + +function applyRevert(plan: CommitPlan, decrementCounters: boolean): void { + const visited = plan.visited; + if (decrementCounters) { + if (plan.hasWildcardTail) { + for (let i = 0; i < visited.length; i++) { + const seen = visited[i]!; + seen.subtreeWildcardCount = Math.max(0, seen.subtreeWildcardCount - 1); + } + } else { + for (let i = 0; i < visited.length; i++) { + const seen = visited[i]!; + seen.subtreeTerminalCount = Math.max(0, seen.subtreeTerminalCount - 1); + } + } + } + const terminalNode = visited[visited.length - 1]!; + if (plan.hasWildcardTail) { + setWildcardName(terminalNode, null); + } else { + terminalNode.terminalMeta = null; + } + const fle = plan.freshLiteralEdges; + if (fle !== null) { + for (let i = fle.length - 1; i >= 0; i--) { + const e = fle[i]!; + if (e.parent.literalChildren !== null) { + delete e.parent.literalChildren[e.key]; + } + if (e.literalChildrenWasNull) { + e.parent.literalChildren = null; + } + } + } + const fpp = plan.freshParamParents; + if (fpp !== null) { + for (let i = fpp.length - 1; i >= 0; i--) { + const p = fpp[i]!; + p.paramChild = null; + p.paramName = null; + } + } + const frp = plan.freshRegexParents; + if (frp !== null) { + for (let i = frp.length - 1; i >= 0; i--) { + const r = frp[i]!; + const siblings = getRegexParamChildren(r.parent); + if (siblings !== null) { + siblings.pop(); + if (r.createdArray) { + setRegexParamChildren(r.parent, null); + } + } + } + } +} + +function rollbackPlan(plan: CommitPlan): void { + applyRevert(plan, true); +} + +function createNode(): PrefixTrieNode { + return { + literalChildren: null, + paramChild: null, + paramName: null, + terminalMeta: null, + subtreeTerminalCount: 0, + subtreeWildcardCount: 0, + }; +} + +function createRegexNode(regexAst: string): PrefixTrieNode { + const n = createNode(); + setRegexAst(n, regexAst); + return n; +} + +function sameTerminalIdentity(a: RouteMeta, b: RouteMeta): boolean { + return a.method === b.method && a.handlerId === b.handlerId; +} + +function routeDuplicate(meta: RouteMeta): RouterErrorData { + return { + kind: RouterErrorKind.RouteDuplicate, + message: `Route already exists: ${meta.method} ${meta.path}`, + path: meta.path, + method: meta.method, + suggestion: 'Use a different path or HTTP method', + }; +} + +function routeConflict(why: string, meta: RouteMeta): RouterErrorData { + return { + kind: RouterErrorKind.RouteConflict, + message: `${meta.method} ${meta.path}: ${why}`, + segment: meta.path, + conflictsWith: 'sibling at the same position', + path: meta.path, + method: meta.method, + suggestion: 'Remove or rename one of the colliding routes so each position resolves unambiguously.', + }; +} + +function attachWildcardTail( + node: PrefixTrieNode, + name: string, + visited: PrefixTrieNode[], + partial: CommitPlan, + routeMeta: RouteMeta, +): Result | undefined { + if (node.subtreeTerminalCount > 0 || node.subtreeWildcardCount > 0) { + applyRevert(partial, false); + return err(routeUnreachable('a descendant terminal or wildcard already covers this prefix', routeMeta)); + } + setWildcardName(node, name); + for (let i = 0; i < visited.length; i++) { + visited[i]!.subtreeWildcardCount++; + } + return undefined; +} + +function attachTerminal( + node: PrefixTrieNode, + visited: PrefixTrieNode[], + partial: CommitPlan, + routeMeta: RouteMeta, +): Result<'alias', RouterErrorData> | undefined { + if (node.terminalMeta !== null) { + if (!routeMeta.isOptionalExpansion) { + applyRevert(partial, false); + return err(routeDuplicate(routeMeta)); + } + if (sameTerminalIdentity(node.terminalMeta, routeMeta)) { + applyRevert(partial, false); + return 'alias'; + } + applyRevert(partial, false); + return err(routeConflict('optional-expansion duplicate with different identity', routeMeta)); + } + if (getWildcardName(node) !== null) { + applyRevert(partial, false); + return err(routeUnreachable('a wildcard is registered at this exact prefix', routeMeta)); + } + node.terminalMeta = routeMeta; + for (let i = 0; i < visited.length; i++) { + visited[i]!.subtreeTerminalCount++; + } + return undefined; +} + +function routeUnreachable(why: string, meta: RouteMeta): RouterErrorData { + return { + kind: RouterErrorKind.RouteUnreachable, + message: `${meta.method} ${meta.path}: ${why}`, + path: meta.path, + method: meta.method, + segment: meta.path, + conflictsWith: 'an earlier wildcard or terminal at this prefix', + suggestion: 'Reorder registrations so the broader wildcard is added last, or remove the unreachable route.', + }; +} + +export { rollbackPlan, WildcardPrefixIndex }; +export type { CommitPlan, RouteMeta }; diff --git a/packages/router/src/processor/decoder.spec.ts b/packages/router/src/processor/decoder.spec.ts deleted file mode 100644 index c4f74b3..0000000 --- a/packages/router/src/processor/decoder.spec.ts +++ /dev/null @@ -1,30 +0,0 @@ -import { describe, it, expect } from 'bun:test'; - -import { buildDecoder } from './decoder'; - -describe('buildDecoder', () => { - it('should decode percent-encoded characters', () => { - const decode = buildDecoder(); - expect(decode('hello%20world')).toBe('hello world'); - }); - - it('should return raw string when segment has no percent sign (fast path)', () => { - const decode = buildDecoder(); - expect(decode('plainpath')).toBe('plainpath'); - }); - - it('should return raw string (not error) on invalid percent encoding', () => { - const decode = buildDecoder(); - expect(decode('%ZZ')).toBe('%ZZ'); - }); - - it('should decode %2F to / in param values', () => { - const decode = buildDecoder(); - expect(decode('a%2Fb')).toBe('a/b'); - }); - - it('should decode multiple percent-encoded chars', () => { - const decode = buildDecoder(); - expect(decode('%E4%B8%AD%E6%96%87')).toBe('中文'); - }); -}); diff --git a/packages/router/src/processor/decoder.ts b/packages/router/src/processor/decoder.ts deleted file mode 100644 index 475bdde..0000000 --- a/packages/router/src/processor/decoder.ts +++ /dev/null @@ -1,17 +0,0 @@ -/** Function type returned by {@link buildDecoder}. Takes a raw segment and returns decoded string. */ -export type DecoderFn = (raw: string) => string; - -/** - * Builds a decoder closure for param value decoding. - * Decodes percent-encoded values. On decode failure, returns raw string as-is. - */ -export function buildDecoder(): DecoderFn { - return (raw: string): string => { - if (!raw.includes('%')) return raw; - try { - return decodeURIComponent(raw); - } catch { - return raw; - } - }; -} diff --git a/packages/router/src/router.spec.ts b/packages/router/src/router.spec.ts index 36999be..3059a25 100644 --- a/packages/router/src/router.spec.ts +++ b/packages/router/src/router.spec.ts @@ -1,43 +1,26 @@ import { describe, it, expect } from 'bun:test'; -import { Router } from './router'; -import { RouterError } from './error'; import type { RouterOptions } from './types'; -// ── Fixtures ── +import { catchRouterError, expectErrorKind } from '../test/test-utils'; +import { RouterError } from './error'; +import { Router, validateCacheSize } from './router'; +import { MatchSource, RouterErrorKind } from './types'; function makeRouter(opts: RouterOptions = {}): Router { return new Router(opts); } -function buildWith( - routes: Array<[string, string, number]>, - opts: RouterOptions = {}, -): Router { - const r = makeRouter(opts); - - for (const [method, path, handler] of routes) { - r.add(method as any, path, handler); +function buildWith(routes: Array<[string, string, number]>, opts: RouterOptions = {}): Router { + const r = new Router(opts); + for (const [method, path, value] of routes) { + r.add(method, path, value); } - r.build(); - return r; } -function catchRouterError(fn: () => void): RouterError { - try { - fn(); - } catch (e) { - expect(e).toBeInstanceOf(RouterError); - return e as RouterError; - } - throw new Error('Expected RouterError to be thrown'); -} - describe('Router', () => { - // ---- HP (Happy Path) ---- - describe('happy path', () => { it('should construct with default options', () => { const r = makeRouter(); @@ -47,7 +30,6 @@ describe('Router', () => { it('should add a single static route via add(method, path, value)', () => { const r = makeRouter(); - // add() returns void (throws on error) r.add('GET', '/users', 1); }); @@ -104,7 +86,7 @@ describe('Router', () => { expect(result).not.toBeNull(); expect(result!.value).toBe(42); expect(result!.params).toEqual({}); - expect(result!.meta.source).toBe('static'); + expect(result!.meta.source).toBe(MatchSource.Static); }); it('should match a dynamic param route after build', () => { @@ -114,7 +96,7 @@ describe('Router', () => { expect(result).not.toBeNull(); expect(result!.value).toBe(10); expect(result!.params.id).toBe('123'); - expect(result!.meta.source).toBe('dynamic'); + expect(result!.meta.source).toBe(MatchSource.Dynamic); }); it('should return null for unregistered path', () => { @@ -125,7 +107,7 @@ describe('Router', () => { }); it('should return cached result on second match of same dynamic path', () => { - const r = buildWith([['GET', '/users/:id', 10]], { enableCache: true }); + const r = buildWith([['GET', '/users/:id', 10]], {}); const first = r.match('GET', '/users/1'); const second = r.match('GET', '/users/1'); @@ -137,17 +119,16 @@ describe('Router', () => { }); it('should return meta.source="cache" on cache hit', () => { - const r = buildWith([['GET', '/users/:id', 10]], { enableCache: true }); - - r.match('GET', '/users/1'); // first → dynamic - const cached = r.match('GET', '/users/1'); // second → cache + const r = buildWith([['GET', '/users/:id', 10]], {}); + r.match('GET', '/users/1'); + const cached = r.match('GET', '/users/1'); expect(cached).not.toBeNull(); - expect(cached!.meta.source).toBe('cache'); + expect(cached!.meta.source).toBe(MatchSource.Cache); }); it('should return null consistently for dynamic miss with cache', () => { - const r = buildWith([['GET', '/users/:id', 10]], { enableCache: true }); + const r = buildWith([['GET', '/users/:id', 10]], {}); const first = r.match('GET', '/posts/hello'); const second = r.match('GET', '/posts/hello'); @@ -157,72 +138,26 @@ describe('Router', () => { }); }); - // ---- CA (Cache) ---- - - describe('cache', () => { - it('should clear hit and miss caches via clearCache()', () => { - const r = buildWith([['GET', '/users/:id', 10]], { enableCache: true }); - - // Warm up cache with a hit and a miss - r.match('GET', '/users/1'); // dynamic → hit cache - r.match('GET', '/users/1'); // cache hit - r.match('GET', '/nope/1'); // miss → miss cache - - // Clear all caches - r.clearCache(); - - // After clear, dynamic route should re-match from trie (source: 'dynamic') - const result = r.match('GET', '/users/1'); - - expect(result).not.toBeNull(); - expect(result!.meta.source).toBe('dynamic'); - }); - - it('should be a no-op when cache is not enabled', () => { - const r = buildWith([['GET', '/users/:id', 10]]); - - // Should not throw even when cache is disabled - r.clearCache(); - - const result = r.match('GET', '/users/1'); - - expect(result).not.toBeNull(); - }); - }); - - // ---- NE (Negative/Error) ---- - describe('negative', () => { it('should throw RouterError(router-sealed) when add() after build', () => { const r = buildWith([['GET', '/x', 1]]); const e = catchRouterError(() => r.add('GET', '/y', 2)); - expect(e.data.kind).toBe('router-sealed'); + expect(e.data.kind).toBe(RouterErrorKind.RouterSealed); }); it('should throw RouterError(router-sealed) when addAll() after build', () => { const r = buildWith([['GET', '/x', 1]]); const e = catchRouterError(() => r.addAll([['GET', '/y', 2]])); - expect(e.data.kind).toBe('router-sealed'); + expect(e.data.kind).toBe(RouterErrorKind.RouterSealed); }); - it('should throw RouterError(not-built) when match() before build', () => { + it('should return null when match() called before build', () => { const r = makeRouter(); r.add('GET', '/x', 1); - const e = catchRouterError(() => r.match('GET', '/x')); - - expect(e.data.kind).toBe('not-built'); - }); - - it('should throw RouterError(path-too-long) when path exceeds maxPathLength', () => { - const r = buildWith([['GET', '/x', 1]], { maxPathLength: 10 }); - const longPath = '/' + 'a'.repeat(20); - - const e = catchRouterError(() => r.match('GET', longPath)); - - expect(e.data.kind).toBe('path-too-long'); + expect(r.match('GET', '/x')).toBeNull(); }); it('should return null for unregistered method', () => { @@ -232,30 +167,32 @@ describe('Router', () => { expect(result).toBeNull(); }); - it('should throw RouterError with registeredCount from addAll on duplicate', () => { + it('should report duplicate addAll entries during build validation', () => { const r = makeRouter(); r.add('GET', '/a', 1); - - const e = catchRouterError(() => r.addAll([ + r.addAll([ ['POST', '/b', 2], - ['GET', '/a', 3], // duplicate → should fail - ])); + ['GET', '/a', 3], + ]); - expect(e.data.registeredCount).toBe(1); + const e = catchRouterError(() => r.build()); + const data = expectErrorKind(e.data, RouterErrorKind.RouteValidation); + expect(data.errors[0]?.index).toBe(2); + expect(data.errors[0]?.error.kind).toBe(RouterErrorKind.RouteDuplicate); }); - it('should throw RouterError when method array add has failure', () => { + it('should report method array duplicate during build validation', () => { const r = makeRouter(); r.add('GET', '/x', 1); + r.add(['GET', 'POST'], '/x', 2); - // Adding ['GET', 'POST'] to same path — GET will duplicate - expect(() => r.add(['GET', 'POST'], '/x', 2)).toThrow(RouterError); + const e = catchRouterError(() => r.build()); + const data = expectErrorKind(e.data, RouterErrorKind.RouteValidation); + const getDuplicateKinds = data.errors.filter(issue => issue.method === 'GET').map(issue => issue.error.kind); + expect(getDuplicateKinds).toContain(RouterErrorKind.RouteDuplicate); }); - }); - // ---- ED (Edge) ---- - describe('edge', () => { it('should add and match root path "/"', () => { const r = buildWith([['GET', '/', 99]]); @@ -267,7 +204,7 @@ describe('Router', () => { it('should accept addAll with empty array', () => { const r = makeRouter(); - r.addAll([]); // should not throw + r.addAll([]); }); it('should not error on second build() call (sealed no-op)', () => { @@ -280,42 +217,16 @@ describe('Router', () => { expect(first).toBe(r); expect(second).toBe(r); }); - - it('should match path at exact maxPathLength', () => { - const maxLen = 30; - const path = '/' + 'a'.repeat(maxLen - 1); // exactly 30 chars - const r = makeRouter({ maxPathLength: maxLen }); - r.add('GET', path, 1); - r.build(); - - const result = r.match('GET', path); - - expect(result).not.toBeNull(); - }); - - it('should throw at maxPathLength+1', () => { - const maxLen = 30; - const path = '/' + 'a'.repeat(maxLen); // 31 chars > maxLen - const r = buildWith([['GET', '/x', 1]], { maxPathLength: maxLen }); - - const e = catchRouterError(() => r.match('GET', path)); - - expect(e.data.kind).toBe('path-too-long'); - }); }); - // ---- CO (Corner) ---- - describe('corner', () => { it('should throw on add but allow match when sealed', () => { const r = buildWith([['GET', '/a', 1]]); - // add should throw const e = catchRouterError(() => r.add('POST', '/b', 2)); - expect(e.data.kind).toBe('router-sealed'); + expect(e.data.kind).toBe(RouterErrorKind.RouterSealed); - // match should work const matchResult = r.match('GET', '/a'); expect(matchResult).not.toBeNull(); @@ -323,12 +234,8 @@ describe('Router', () => { }); it('should apply combined preNormalize (caseSensitive:false + ignoreTrailingSlash)', () => { - const r = buildWith( - [['GET', '/users', 1]], - { caseSensitive: false, ignoreTrailingSlash: true }, - ); + const r = buildWith([['GET', '/users', 1]], { pathCaseSensitive: false, ignoreTrailingSlash: true }); - // Trailing slash + uppercase → both normalized const result = r.match('GET', '/Users/'); expect(result).not.toBeNull(); @@ -336,21 +243,16 @@ describe('Router', () => { }); it('should return null from cache for previously missed path', () => { - const r = buildWith([['GET', '/users/:id', 1]], { enableCache: true }); + const r = buildWith([['GET', '/users/:id', 1]], {}); - // First miss → null stored in cache const miss1 = r.match('GET', '/nope/1'); - // Second hit → from cache const miss2 = r.match('GET', '/nope/1'); expect(miss1).toBeNull(); expect(miss2).toBeNull(); }); - }); - // ---- ST (State Transition) ---- - describe('state transitions', () => { it('should follow full lifecycle: add → addAll → build → match', () => { const r = makeRouter(); @@ -372,29 +274,25 @@ describe('Router', () => { r.add('GET', '/users/:id', 10); r.build(); - // Match still works const result = r.match('GET', '/users/1'); expect(result).not.toBeNull(); expect(result!.value).toBe(10); - // Add blocked → sealed expect(() => r.add('GET', '/y', 2)).toThrow(RouterError); }); it('should write cache entry on dynamic match hit', () => { - const r = buildWith([['GET', '/items/:id', 5]], { enableCache: true }); - - r.match('GET', '/items/42'); // dynamic → writes cache - - const cached = r.match('GET', '/items/42'); // reads from cache + const r = buildWith([['GET', '/items/:id', 5]], {}); + r.match('GET', '/items/42'); + const cached = r.match('GET', '/items/42'); expect(cached).not.toBeNull(); - expect(cached!.meta.source).toBe('cache'); + expect(cached!.meta.source).toBe(MatchSource.Cache); }); it('should return null consistently on dynamic miss', () => { - const r = buildWith([['GET', '/items/:id', 5]], { enableCache: true }); + const r = buildWith([['GET', '/items/:id', 5]], {}); const miss1 = r.match('GET', '/nope/1'); const miss2 = r.match('GET', '/nope/1'); @@ -419,16 +317,13 @@ describe('Router', () => { }); }); - // ---- ID (Idempotency) ---- - describe('idempotency', () => { it('should return same sealed state on build() called twice', () => { const r = makeRouter(); r.add('GET', '/x', 1); r.build(); - r.build(); // second call no-op - + r.build(); const result = r.match('GET', '/x'); expect(result).not.toBeNull(); @@ -456,13 +351,11 @@ describe('Router', () => { expect(first).not.toBeNull(); expect(second).not.toBeNull(); expect(first!.value).toBe(second!.value); - expect(first!.meta.source).toBe('static'); - expect(second!.meta.source).toBe('static'); + expect(first!.meta.source).toBe(MatchSource.Static); + expect(second!.meta.source).toBe(MatchSource.Static); }); }); - // ---- OR (Ordering) ---- - describe('ordering', () => { it('should match static route before dynamic when both exist', () => { const r = makeRouter(); @@ -474,7 +367,7 @@ describe('Router', () => { expect(result).not.toBeNull(); expect(result!.value).toBe('static-me'); - expect(result!.meta.source).toBe('static'); + expect(result!.meta.source).toBe(MatchSource.Static); }); it('should follow match pipeline: static → cache → normalize → dynamic', () => { @@ -483,40 +376,72 @@ describe('Router', () => { ['GET', '/static', 1], ['GET', '/dynamic/:id', 2], ], - { enableCache: true }, + {}, ); - // Static route → source: 'static' const staticResult = r.match('GET', '/static'); expect(staticResult).not.toBeNull(); - expect(staticResult!.meta.source).toBe('static'); + expect(staticResult!.meta.source).toBe(MatchSource.Static); - // Dynamic first hit → source: 'dynamic' const dynamicResult = r.match('GET', '/dynamic/1'); expect(dynamicResult).not.toBeNull(); - expect(dynamicResult!.meta.source).toBe('dynamic'); + expect(dynamicResult!.meta.source).toBe(MatchSource.Dynamic); - // Dynamic second hit → source: 'cache' const cachedResult = r.match('GET', '/dynamic/1'); expect(cachedResult).not.toBeNull(); - expect(cachedResult!.meta.source).toBe('cache'); + expect(cachedResult!.meta.source).toBe(MatchSource.Cache); }); - it('should stop method array iteration at first error', () => { + it('should validate all expanded method array entries at build time', () => { const r = makeRouter(); r.add('GET', '/x', 1); + r.add(['GET', 'POST'], '/x', 2); - // ['GET', 'POST'] where GET is duplicate → error on first (GET) - expect(() => r.add(['GET', 'POST'], '/x', 2)).toThrow(RouterError); + const e = catchRouterError(() => r.build()); + const data = expectErrorKind(e.data, RouterErrorKind.RouteValidation); + expect(data.errors).toHaveLength(1); + expect(data.errors[0]?.method).toBe('GET'); + expect(r.match('POST', '/x')).toBeNull(); + }); + }); +}); - // POST was NOT registered because GET failed first - r.build(); - const postResult = r.match('POST', '/x'); +describe('validateCacheSize', () => { + it('accepts an undefined input and returns the default 1000', () => { + expect(validateCacheSize(undefined)).toBe(1000); + }); - expect(postResult).toBeNull(); - }); + it('returns the input value when it is a positive integer in range', () => { + expect(validateCacheSize(1)).toBe(1); + expect(validateCacheSize(2048)).toBe(2048); + expect(validateCacheSize(0x4000_0000)).toBe(0x4000_0000); + }); + + it('throws router-options-invalid for zero', () => { + expect(() => validateCacheSize(0)).toThrow(RouterError); + }); + + it('throws router-options-invalid for negative integers', () => { + expect(() => validateCacheSize(-1)).toThrow(RouterError); + }); + + it('throws router-options-invalid for non-integer values', () => { + expect(() => validateCacheSize(1.5)).toThrow(RouterError); + }); + + it('throws router-options-invalid for NaN', () => { + expect(() => validateCacheSize(Number.NaN)).toThrow(RouterError); + }); + + it('throws router-options-invalid for values above 2^30', () => { + expect(() => validateCacheSize(0x4000_0001)).toThrow(RouterError); + }); + + it('attaches kind=router-options-invalid to the thrown error', () => { + const err = catchRouterError(() => validateCacheSize(-1)); + expect(err.data.kind).toBe(RouterErrorKind.RouterOptionsInvalid); }); }); diff --git a/packages/router/src/router.ts b/packages/router/src/router.ts index 5c6d33a..e3fdb3d 100644 --- a/packages/router/src/router.ts +++ b/packages/router/src/router.ts @@ -1,560 +1,315 @@ -import type { HttpMethod } from '@zipbul/shared'; -import type { Result } from '@zipbul/result'; -import type { - MatchMeta, - MatchOutput, - RegexSafetyOptions, - RouteParams, - RouterErrData, - RouterOptions, -} from './types'; -import type { RadixMatchFn } from './matcher/radix-matcher'; -import type { MatchState } from './matcher/match-state'; -import type { BuilderConfig } from './builder/types'; +import { optimizeNextInvocation } from 'bun:jsc'; -import { err, isErr } from '@zipbul/result'; -import { RouterError } from './error'; -import { PathParser } from './builder/path-parser'; -import { RadixBuilder } from './builder/radix-builder'; -import { OptionalParamDefaults } from './builder/optional-param-defaults'; +import type { MatchCacheEntry, MatchConfig } from './codegen'; +import type { SegmentNode } from './tree'; +import type { MatchOutput, RouterOptions, RouterPublicApi } from './types'; + +import { PathParser } from './builder'; import { RouterCache } from './cache'; +import { compileMatchFn } from './codegen'; +import { RouterError } from './error'; import { MethodRegistry } from './method-registry'; -import { buildDecoder } from './processor/decoder'; -import { createRadixWalker } from './matcher/radix-walk'; -import { createMatchState, resetMatchState } from './matcher/match-state'; +import { buildFromRegistration, MatchLayer, Registration } from './pipeline'; +import { forEachStaticChild } from './tree'; +import { RouterErrorKind } from './types'; -const ALL_METHODS: readonly HttpMethod[] = ['GET', 'POST', 'PUT', 'PATCH', 'DELETE', 'OPTIONS', 'HEAD']; +const ROUTER_INTERNALS_KEY: unique symbol = Symbol.for('@zipbul/router/internals'); -const EMPTY_PARAMS: RouteParams = Object.freeze({}); -const STATIC_META: MatchMeta = Object.freeze({ source: 'static' } as const); -const CACHE_META: MatchMeta = Object.freeze({ source: 'cache' } as const); -const DYNAMIC_META: MatchMeta = Object.freeze({ source: 'dynamic' } as const); +const EMPTY_METHODS: readonly string[] = Object.freeze([]); -interface CachedMatchEntry { - value: T; - params: RouteParams; +function buildRootFirstCharMask(root: SegmentNode): Int32Array | null { + if (root.paramChild !== null) { + return null; + } + if (root.wildcardStore !== null) { + return null; + } + if (root.staticPrefix !== null) { + return null; + } + const mask = new Int32Array(256); + let hasAny = false; + forEachStaticChild(root, key => { + if (key.length > 0) { + mask[key.charCodeAt(0)] = 1; + hasAny = true; + } + }); + return hasAny ? mask : null; } -export class Router { - private readonly options: RouterOptions; - private pathParser: PathParser | null; - private radixBuilder: RadixBuilder | null; - private readonly methodRegistry = new MethodRegistry(); - - private _ignoreTrailingSlash = true; - private _caseSensitive = true; - private _decodeParams = true; - private _maxPathLength = 2048; - private _maxSegmentLength = 256; - private hitCacheByMethod: Map>> | undefined; - private missCacheByMethod: Map> | undefined; - private cacheMaxSize: number = 1000; - private sealed = false; +interface RouterInternals { + matchImpl: ((method: string, path: string) => MatchOutput | null) | undefined; + matchLayer: MatchLayer | undefined; + registration: Registration; +} - private handlers: T[] = []; - private optionalParamDefaults: OptionalParamDefaults | undefined; - private trees: Array = []; - private matchState!: MatchState; +interface CacheContainers { + hit: Array> | undefined>; + maxSize: number; +} - private staticMap: Map> = new Map(); - private methodCodes: ReadonlyMap = new Map(); - /** Track wildcard names per normalized prefix for cross-method conflict detection */ - private wildcardNames: Map = new Map(); +/** + * High-performance URL router. Build-once / match-many. + * + * Lifecycle: + * 1. `new Router(options?)` — instantiate. + * 2. `add(method, path, value)` / `addAll(entries)` — queue routes. + * Path syntax, conflict, and duplicate validation is deferred to + * `build()`. + * 3. `build()` — seal the router and emit the specialized match + * function. Required before `match()` returns anything but `null`. + * 4. `match(method, path)` / `allowedMethods(path)` — query at runtime. + * + * Once `build()` returns, the instance is frozen and further `add()` / + * `addAll()` calls throw `RouterError({ kind: 'router-sealed' })`. To + * register more routes, construct a new `Router`. + * + * All instance methods are detachable (`const m = router.match; + * m('GET', '/x')`) — they do not read `this`. + * + * @template T - Type of the value stored with each route. + */ +class Router implements RouterPublicApi { + /** + * Queue a route for registration. Validation is deferred to + * `build()`; this call only throws if invoked after `build()`. + * + * @param method - HTTP method, an array of methods to register the + * same route under, or `'*'` to expand at seal time to every + * method present at build time (the seven HTTP defaults plus any + * custom method introduced by any other route registered before + * `build()` — registration order does not matter). + * @param path - Origin-form pathname starting with `/`. May contain + * `:name`, `:name?`, `:name(regex)`, `*name`, and `*name+` syntax; + * see the README for full pattern reference. + * @param value - Value to associate with the route. Surfaced as + * {@link MatchOutput.value} on a match. + * @throws {RouterError} `kind: 'router-sealed'` if called after `build()`. + */ + readonly add: (method: string | readonly string[], path: string, value: T) => void; + /** + * Queue multiple routes at once. Behaves like a loop of `add()` + * calls with shared error context. Validation is deferred to + * `build()`. + * + * @param entries - Array of `[method, path, value]` triples. + * @throws {RouterError} `kind: 'router-sealed'` if called after `build()`. + */ + readonly addAll: (entries: ReadonlyArray) => void; + /** + * Seal the router and emit the specialized match function. Required + * before `match()` can return anything but `null`. Returns `this`. + * The second and subsequent calls are no-ops. + * + * Build-time failures across multiple routes are aggregated into a + * single `RouterError({ kind: 'route-validation', errors: [...] })` + * rather than thrown one by one. + * + * @throws {RouterError} On the first per-route failure encountered, + * or `kind: 'route-validation'` for aggregated failures, or any + * options-validation error surfaced during sealing. + */ + readonly build: () => RouterPublicApi; + /** + * Match a URL against the registered routes. + * + * @param method - HTTP method. + * @param path - Origin-form pathname (RFC 7230 §5.3.1). `match()` + * does not perform IRI / percent-encoding normalization on input + * — pass the form produced by `new URL(request.url).pathname`. + * Trailing-slash and case normalization _are_ applied at match + * time when {@link RouterOptions.ignoreTrailingSlash} (default + * `true`) and {@link RouterOptions.pathCaseSensitive} (default + * `true`) opt in. Param values are percent-decoded; wildcard + * captures are returned raw. + * @returns A {@link MatchOutput} on a hit, or `null` on a miss + * (no route, wrong method, or `build()` not yet called). + * @throws {URIError} If a captured param slot contains malformed + * `%xx` percent-encoding (propagated from `decodeURIComponent`). + * {@link RouterError} is never thrown from `match()`. + */ + match: (method: string, path: string) => MatchOutput | null; + /** + * List the HTTP methods registered for `path`. Used by HTTP + * adapters to disambiguate `404` (no routes for the path) from + * `405` (the path exists but not for this method). + * + * Walks every registered method's tree, so it is meaningfully + * slower than `match()` — only call it after `match()` returns + * `null`. Never call on a hot match path. + * + * @param path - Origin-form pathname. + * @returns A frozen array of method names, possibly empty. + */ + allowedMethods: (path: string) => readonly string[]; + /** + * @param options - Optional configuration; see {@link RouterOptions}. + * @throws {RouterError} `kind: 'router-options-invalid'` if a value + * in `options` is out of range (e.g. negative `cacheSize`). + */ constructor(options: RouterOptions = {}) { - this.options = options; - - if (options.enableCache === true) { - this.hitCacheByMethod = new Map(); - this.missCacheByMethod = new Map(); - this.cacheMaxSize = options.cacheSize ?? 1000; - } - - const regexSafety: RegexSafetyOptions = { - mode: options.regexSafety?.mode ?? 'error', - maxLength: options.regexSafety?.maxLength ?? 256, - forbidBacktrackingTokens: options.regexSafety?.forbidBacktrackingTokens ?? true, - forbidBackreferences: options.regexSafety?.forbidBackreferences ?? true, + const routerOptions: RouterOptions = { ...options }; + const methodRegistry = new MethodRegistry(); + const registration = new Registration( + methodRegistry, + new PathParser({ + caseSensitive: routerOptions.pathCaseSensitive ?? true, + ignoreTrailingSlash: routerOptions.ignoreTrailingSlash ?? true, + }), + ); + const cache: CacheContainers = { + hit: [], + maxSize: validateCacheSize(routerOptions.cacheSize), }; - - if (options.regexSafety?.maxExecutionMs !== undefined) { - regexSafety.maxExecutionMs = options.regexSafety.maxExecutionMs; - } - - if (options.regexSafety?.validator !== undefined) { - regexSafety.validator = options.regexSafety.validator; - } - - const buildConfig: BuilderConfig = { - regexSafety, - optionalParamDefaults: new OptionalParamDefaults(options.optionalParamBehavior), + const internals: RouterInternals = { + matchImpl: undefined, + matchLayer: undefined, + registration, + }; + installInternalsSlot(this, internals); + + const performBuild = (): void => { + const built = runBuildPipeline(registration, methodRegistry, routerOptions, cache); + internals.matchImpl = built.matchImpl; + internals.matchLayer = built.matchLayer; + this.match = built.matchImpl; + this.allowedMethods = path => built.matchLayer.allowedMethods(path); + Object.freeze(this); }; - if (options.regexAnchorPolicy !== undefined) { - buildConfig.regexAnchorPolicy = options.regexAnchorPolicy; - } - - if (options.onWarn !== undefined) { - buildConfig.onWarn = options.onWarn; - } - - this.pathParser = new PathParser({ - caseSensitive: options.caseSensitive ?? true, - ignoreTrailingSlash: options.ignoreTrailingSlash ?? true, - maxSegmentLength: options.maxSegmentLength ?? 256, - regexSafety, - regexAnchorPolicy: options.regexAnchorPolicy, - onWarn: options.onWarn, - }); - - this.radixBuilder = new RadixBuilder(buildConfig); - } - - add(method: HttpMethod | HttpMethod[] | '*', path: string, value: T): void { - if (this.sealed) { - throw new RouterError({ - kind: 'router-sealed', - message: 'Cannot add routes after build(). The router is sealed.', - path, - method: Array.isArray(method) ? method[0] : method, - suggestion: 'Create a new Router instance to add more routes', - }); - } - - if (Array.isArray(method)) { - for (const m of method) { - const result = this.addOne(m, path, value); - - if (isErr(result)) { - throw new RouterError(result.data); - } - } - - return; - } - - if (method === '*') { - for (const m of ALL_METHODS) { - const result = this.addOne(m, path, value); - - if (isErr(result)) { - throw new RouterError(result.data); - } - } - - return; - } - - const result = this.addOne(method, path, value); - - if (isErr(result)) { - throw new RouterError(result.data); - } - } - - addAll(entries: Array<[HttpMethod, string, T]>): void { - if (this.sealed) { - throw new RouterError({ - kind: 'router-sealed', - message: 'Cannot add routes after build(). The router is sealed.', - registeredCount: 0, - suggestion: 'Create a new Router instance to add more routes', - }); - } - - let registeredCount = 0; - - for (const [method, path, value] of entries) { - const result = this.addOne(method, path, value); - - if (isErr(result)) { - throw new RouterError({ - ...result.data, - registeredCount, - }); + this.add = (method, path, value) => { + registration.add(method, path, value); + }; + this.addAll = entries => { + registration.addAll(entries); + }; + this.build = () => { + if (!registration.isSealed()) { + performBuild(); } - - registeredCount++; - } - } - - build(): this { - if (this.sealed) { return this; - } - - this.sealed = true; - - const allCodes = this.methodRegistry.getAllCodes(); - this.methodCodes = allCodes; - - this.optionalParamDefaults = this.radixBuilder!.optionalParamDefaults; - - const decoder = buildDecoder(); - const decodeParams = this.options.decodeParams ?? true; - - for (const [, code] of allCodes) { - const root = this.radixBuilder!.getRoot(code); - - if (!root) { - this.trees[code] = null; - continue; - } - - const testers = this.radixBuilder!.getTesters(code); - this.trees[code] = createRadixWalker(root, testers, decoder, decodeParams); - } - - this.matchState = createMatchState(); - - this._ignoreTrailingSlash = this.options.ignoreTrailingSlash ?? true; - this._caseSensitive = this.options.caseSensitive ?? true; - this._decodeParams = this.options.decodeParams ?? true; - this._maxPathLength = this.options.maxPathLength ?? 2048; - this._maxSegmentLength = this.options.maxSegmentLength ?? 256; - - this.pathParser = null; - this.radixBuilder = null; - - return this; - } - - clearCache(): void { - if (this.hitCacheByMethod) { - for (const cache of this.hitCacheByMethod.values()) { - cache.clear(); - } - } - - if (this.missCacheByMethod) { - for (const set of this.missCacheByMethod.values()) { - set.clear(); - } - } - } - - match(method: HttpMethod, path: string): MatchOutput | null { - if (!this.sealed) { - throw new RouterError({ - kind: 'not-built', - message: 'Router must be built before matching. Call build() first.', - path, - method, - suggestion: 'Call router.build() after adding all routes', - }); - } - - if (path.length > this._maxPathLength) { - throw new RouterError({ - kind: 'path-too-long', - message: `Path length (${path.length}) exceeds maxPathLength (${this._maxPathLength}).`, - path, - method, - suggestion: `Shorten the path or increase maxPathLength in RouterOptions (current: ${this._maxPathLength}).`, - }); - } - - // Inline resolveMethodCode — avoid function call + Result wrapping - const methodCode = this.methodCodes.get(method); - - if (methodCode === undefined) { - throw new RouterError({ - kind: 'method-not-found', - message: `No routes registered for method '${method}'.`, - method, - }); - } - - const searchPath = this.preNormalize(path); - - // 1. Static match O(1) - const staticHit = this.staticMap.get(searchPath)?.[methodCode]; - - if (staticHit !== undefined) { - return { value: staticHit, params: EMPTY_PARAMS, meta: STATIC_META }; - } - - // 2. Cache lookup - const cached = this.lookupCache(searchPath, methodCode); - - if (cached !== undefined) { - if (cached === null) { - return null; - } - - return { value: cached.value, params: cached.params, meta: CACHE_META }; - } - - // 3. Segment length validation - if (!this.checkSegmentLengths(searchPath)) { - throw new RouterError({ - kind: 'segment-limit', - message: 'Segment length exceeds limit', - path, - method, - suggestion: `Shorten the path segment to ${this._maxSegmentLength} characters or fewer.`, - }); - } - - // 4. Radix trie match - const tree = this.trees[methodCode]; - - if (!tree) { - this.writeCacheEntry(searchPath, methodCode, null); - return null; - } - - resetMatchState(this.matchState); - const matched = tree(searchPath, 0, this.matchState); - - if (!matched) { - if (this.matchState.errorKind) { - throw new RouterError({ - kind: this.matchState.errorKind as any, - message: this.matchState.errorMessage!, - path, - method, - }); - } - - this.writeCacheEntry(searchPath, methodCode, null); - return null; - } - - // 5. Build result from match state - const state = this.matchState; - const params = this.buildParamsObject(state); - - this.optionalParamDefaults?.apply(state.handlerIndex, params); - - const value = this.handlers[state.handlerIndex]; - - if (value === undefined) { - return null; - } - - this.writeCacheEntry(searchPath, methodCode, { value, params }); - - return { value, params, meta: DYNAMIC_META }; - } - - private buildParamsObject(state: MatchState): RouteParams { - const params: RouteParams = {}; - - for (let i = 0; i < state.paramCount; i++) { - params[state.paramNames[i]!] = state.paramValues[i]!; - } + }; - return params; + this.match = () => null; + this.allowedMethods = () => EMPTY_METHODS; } +} - /** - * Validates that no path segment exceeds maxSegmentLength. - * Returns true if valid, false if any segment is too long. - */ - private checkSegmentLengths(path: string): boolean { - const maxLen = this._maxSegmentLength; - let segLen = 0; - - for (let i = 1; i < path.length; i++) { - if (path.charCodeAt(i) === 47) { // '/' - segLen = 0; - } else { - segLen++; - - if (segLen > maxLen) return false; - } - } - - return true; +function validateCacheSize(rawCacheSize: number | undefined): number { + const requested = rawCacheSize ?? 1000; + if (!Number.isInteger(requested) || requested < 1 || requested > 0x4000_0000) { + throw new RouterError({ + kind: RouterErrorKind.RouterOptionsInvalid, + message: `cacheSize must be a positive integer (received: ${String(requested)})`, + suggestion: 'Pass a positive integer between 1 and 2^30.', + }); } + return requested; +} - // resolveMethodCode removed — inlined into match() for performance - - private preNormalize(path: string): string { - let p = path; - - // Query string strip - const qIdx = p.indexOf('?'); - - if (qIdx !== -1) { - p = p.substring(0, qIdx); - } +function installInternalsSlot(target: object, internals: RouterInternals): void { + Object.defineProperty(target, ROUTER_INTERNALS_KEY, { + value: internals, + writable: false, + enumerable: false, + configurable: false, + }); +} - if (this._ignoreTrailingSlash && p.length > 1 && p.charCodeAt(p.length - 1) === 47) { - p = p.substring(0, p.length - 1); - } +interface BuildPipelineResult { + matchImpl: (method: string, path: string) => MatchOutput | null; + matchLayer: MatchLayer; +} - if (!this._caseSensitive) { - p = p.toLowerCase(); +function runBuildPipeline( + registration: Registration, + methodRegistry: MethodRegistry, + routerOptions: RouterOptions, + cache: CacheContainers, +): BuildPipelineResult { + const snapshot = registration.seal({ + omitMissingOptional: routerOptions.omitMissingOptional, + }); + const r = buildFromRegistration(snapshot, routerOptions, methodRegistry); + + let hasAnyStatic = false; + for (const bucket of r.staticOutputsByMethod) { + if (bucket !== undefined) { + hasAnyStatic = true; + break; } - - return p; } - private lookupCache(searchPath: string, methodCode: number): CachedMatchEntry | null | undefined { - if (!this.hitCacheByMethod) { - return undefined; - } - - // Check miss cache first (Set lookup is cheaper) - const missSet = this.missCacheByMethod!.get(methodCode); - - if (missSet?.has(searchPath)) { - return null; + for (let i = 0; i < r.activeMethodCodes.length; i++) { + const code = r.activeMethodCodes[i]![1]; + if (cache.hit[code] === undefined) { + cache.hit[code] = new RouterCache(cache.maxSize); } - - // Check hit cache - return this.hitCacheByMethod.get(methodCode)?.get(searchPath); } - private writeCacheEntry(searchPath: string, methodCode: number, entry: CachedMatchEntry | null): void { - if (!this.hitCacheByMethod) { - return; - } - - if (entry) { - let mc = this.hitCacheByMethod.get(methodCode); + const matchImpl = compileMatchFn(buildMatchConfig(snapshot, r, cache, hasAnyStatic)); + optimizeNextInvocation(matchImpl); + const matchLayer = new MatchLayer({ + normalizePath: r.normalizePath, + matchState: r.matchState, + activeMethodCodes: r.activeMethodCodes, + trees: r.trees, + staticPathMethodMask: r.staticPathMethodMask, + }); - if (!mc) { - mc = new RouterCache(this.cacheMaxSize); - this.hitCacheByMethod.set(methodCode, mc); - } - - mc.set(searchPath, { - value: entry.value, - params: { ...entry.params }, - }); - } else { - let missSet = this.missCacheByMethod!.get(methodCode); + Object.freeze(snapshot.segmentTrees); + Object.freeze(snapshot.staticByMethod); + Object.freeze(r.activeMethodCodes); - if (!missSet) { - missSet = new Set(); - this.missCacheByMethod!.set(methodCode, missSet); - } + Bun.gc(true); - // Bounded miss set: clear when full to prevent unbounded growth - if (missSet.size >= this.cacheMaxSize) { - missSet.clear(); - } + return { matchImpl, matchLayer }; +} - missSet.add(searchPath); - } +function buildMatchConfig( + snapshot: ReturnType['seal']>, + r: ReturnType>, + cache: CacheContainers, + hasAnyStatic: boolean, +): MatchConfig { + const activeMethodMask = new Int32Array(32); + for (let i = 0; i < r.activeMethodCodes.length; i++) { + activeMethodMask[r.activeMethodCodes[i]![1]] = 1; } - private checkWildcardNameConflict( - parts: import('./builder/path-parser').PathPart[], - normalized: string, - method: string, - ): Result { - for (const part of parts) { - if (part.type === 'wildcard') { - // Build prefix key (path without wildcard) - const prefix = normalized.replace(/\/[*:].*$/, ''); - const existing = this.wildcardNames.get(prefix); - - if (existing !== undefined && existing !== part.name) { - return err({ - kind: 'route-conflict', - message: `Wildcard '*${part.name}' conflicts with existing wildcard '*${existing}' at path prefix '${prefix}'`, - segment: part.name, - conflictsWith: existing, - method, - }); - } - - this.wildcardNames.set(prefix, part.name); - break; - } - } + const rootFirstCharMaskByMethod: Array = []; + for (let i = 0; i < 32; i++) { + rootFirstCharMaskByMethod[i] = null; } - - private checkStaticWildcardConflict( - normalized: string, - method: string, - ): Result { - // Check if any wildcard prefix is a parent of this static route - for (const [prefix] of this.wildcardNames) { - if (normalized.startsWith(prefix + '/') || normalized === prefix) { - return err({ - kind: 'route-conflict', - message: `Static route '${normalized}' conflicts with existing wildcard at '${prefix}/*'`, - segment: normalized, - method, - }); - } + for (let i = 0; i < r.activeMethodCodes.length; i++) { + const code = r.activeMethodCodes[i]![1]; + const root = snapshot.segmentTrees[code]; + if (root != null) { + rootFirstCharMaskByMethod[code] = buildRootFirstCharMask(root); } } - private addOne(method: HttpMethod, path: string, value: T): Result { - const offsetResult = this.methodRegistry.getOrCreate(method); - - if (isErr(offsetResult)) { - return err({ - ...offsetResult.data, - path, - }); - } - - const parseResult = this.pathParser!.parse(path); - - if (isErr(parseResult)) { - return err({ - ...parseResult.data, - path, - method, - }); - } - - const { parts, normalized, isDynamic } = parseResult; - - // Check for wildcard name conflicts across methods - const wcConflict = this.checkWildcardNameConflict(parts, normalized, method); - - if (isErr(wcConflict)) { - return wcConflict; - } - - // Check for static route conflicting with existing wildcard - if (!isDynamic) { - const wcBlockConflict = this.checkStaticWildcardConflict(normalized, method); - - if (isErr(wcBlockConflict)) { - return wcBlockConflict; - } - - let arr = this.staticMap.get(normalized); - - if (!arr) { - arr = []; - this.staticMap.set(normalized, arr); - } - - if (arr[offsetResult] !== undefined) { - return err({ - kind: 'route-duplicate', - message: `Route already exists for ${method} ${normalized}`, - path, - method, - suggestion: 'Use a different path or HTTP method', - }); - } - - arr[offsetResult] = value; - return; - } - - const handlerIndex = this.handlers.length; - this.handlers.push(value); - - const insertResult = this.radixBuilder!.insert(offsetResult, parts, handlerIndex); - - if (isErr(insertResult)) { - return err({ - ...insertResult.data, - path, - method, - }); - } - } + return { + trimSlash: r.ignoreTrailingSlash, + lowerCase: !r.caseSensitive, + hasAnyTree: r.trees.some(t => t != null), + hasAnyStatic, + staticOutputsByMethod: r.staticOutputsByMethod, + staticByPath: r.staticByPath, + methodCodes: r.methodCodes, + activeMethodMask, + rootFirstCharMaskByMethod, + trees: r.trees, + matchState: r.matchState, + handlers: snapshot.handlers, + hitCacheByMethod: cache.hit, + activeMethodCodes: r.activeMethodCodes, + terminalSlab: r.terminalSlab, + paramsFactories: r.paramsFactories, + }; } + +export { ROUTER_INTERNALS_KEY, Router, validateCacheSize }; +export type { RouterInternals }; diff --git a/packages/router/src/tree/factor-detect.spec.ts b/packages/router/src/tree/factor-detect.spec.ts new file mode 100644 index 0000000..06dd230 --- /dev/null +++ b/packages/router/src/tree/factor-detect.spec.ts @@ -0,0 +1,163 @@ +import { describe, expect, it } from 'bun:test'; + +import type { SegmentNode } from './segment-tree'; + +import { detectTenantFactor, getTenantFactor, setTenantFactor } from './factor-detect'; +import { createSegmentNode } from './segment-tree'; + +function leafWithStore(store: number): SegmentNode { + const node = createSegmentNode(); + node.store = store; + return node; +} + +function rootWithSiblings(count: number, makeLeaf: (i: number) => SegmentNode): SegmentNode { + const root = createSegmentNode(); + root.staticChildren = Object.create(null) as Record; + for (let i = 0; i < count; i++) { + root.staticChildren[`tenant-${i}`] = makeLeaf(i); + } + return root; +} + +describe('getTenantFactor / setTenantFactor', () => { + it('returns undefined when no factor is stored for the node', () => { + const node = createSegmentNode(); + expect(getTenantFactor(node)).toBeUndefined(); + }); + + it('returns the stored factor after setTenantFactor', () => { + const node = createSegmentNode(); + const factor = { keyToTerminal: new Map(), sharedNext: createSegmentNode() }; + setTenantFactor(node, factor); + expect(getTenantFactor(node)).toBe(factor); + }); + + it('stores factors per-node (no cross-node leakage)', () => { + const a = createSegmentNode(); + const b = createSegmentNode(); + const factorA = { keyToTerminal: new Map(), sharedNext: createSegmentNode() }; + setTenantFactor(a, factorA); + expect(getTenantFactor(b)).toBeUndefined(); + }); +}); + +describe('detectTenantFactor — disqualifiers', () => { + it('returns null when root has a store of its own', () => { + const root = rootWithSiblings(1000, leafWithStore); + root.store = 1; + expect(detectTenantFactor(root)).toBeNull(); + }); + + it('returns null when root has a paramChild', () => { + const root = rootWithSiblings(1000, leafWithStore); + root.paramChild = { + name: 'id', + tester: null, + patternSource: null, + ownerRouteID: 0, + next: createSegmentNode(), + nextSibling: null, + }; + expect(detectTenantFactor(root)).toBeNull(); + }); + + it('returns null when root has a wildcardStore', () => { + const root = rootWithSiblings(1000, leafWithStore); + root.wildcardStore = 1; + expect(detectTenantFactor(root)).toBeNull(); + }); + + it('returns null when root has no staticChildren', () => { + const root = createSegmentNode(); + expect(detectTenantFactor(root)).toBeNull(); + }); + + it('returns null when sibling count is below the minSiblings threshold', () => { + const root = rootWithSiblings(500, leafWithStore); + expect(detectTenantFactor(root, 1000)).toBeNull(); + }); + + it('returns null when one sibling has no unique terminal store', () => { + const root = rootWithSiblings(1000, leafWithStore); + root.staticChildren!['tenant-5']!.store = null; + expect(detectTenantFactor(root)).toBeNull(); + }); + + it('returns null when sibling subtree shapes differ (one has paramChild, others do not)', () => { + const root = rootWithSiblings(1000, leafWithStore); + const odd = createSegmentNode(); + odd.paramChild = { + name: 'id', + tester: null, + patternSource: null, + ownerRouteID: 0, + next: leafWithStore(99), + nextSibling: null, + }; + root.staticChildren!['tenant-7'] = odd; + expect(detectTenantFactor(root)).toBeNull(); + }); +}); + +describe('detectTenantFactor — happy path', () => { + it('returns a factor mapping every key to its leaf store', () => { + const root = rootWithSiblings(1500, i => leafWithStore(i + 100)); + const factor = detectTenantFactor(root); + expect(factor).not.toBeNull(); + expect(factor!.keyToTerminal.size).toBe(1500); + expect(factor!.keyToTerminal.get('tenant-0')).toBe(100); + expect(factor!.keyToTerminal.get('tenant-1499')).toBe(1599); + }); + + it('uses the first sibling as the canonical sharedNext', () => { + const root = rootWithSiblings(1500, leafWithStore); + const first = root.staticChildren!['tenant-0']!; + const factor = detectTenantFactor(root); + expect(factor!.sharedNext).toBe(first); + }); + + it('honors a custom minSiblings threshold', () => { + const root = rootWithSiblings(500, leafWithStore); + expect(detectTenantFactor(root, 100)).not.toBeNull(); + }); +}); + +describe('detectTenantFactor — leafStoreOf descent shapes', () => { + it('walks through a single paramChild chain to the unique terminal store', () => { + const root = rootWithSiblings(1500, i => { + const top = createSegmentNode(); + top.paramChild = { + name: 'id', + tester: null, + patternSource: null, + ownerRouteID: 0, + next: leafWithStore(i), + nextSibling: null, + }; + return top; + }); + expect(detectTenantFactor(root)).not.toBeNull(); + }); + + it('walks through a singleChildKey static chain to the unique terminal store', () => { + const root = rootWithSiblings(1500, i => { + const top = createSegmentNode(); + top.singleChildKey = 'users'; + top.singleChildNext = leafWithStore(i); + return top; + }); + expect(detectTenantFactor(root)).not.toBeNull(); + }); + + it('rejects subtrees whose intermediate node carries both a store and descendants', () => { + const root = rootWithSiblings(1500, i => { + const intermediate = createSegmentNode(); + intermediate.store = i; + intermediate.singleChildKey = 'users'; + intermediate.singleChildNext = leafWithStore(i + 10000); + return intermediate; + }); + expect(detectTenantFactor(root)).toBeNull(); + }); +}); diff --git a/packages/router/src/tree/factor-detect.ts b/packages/router/src/tree/factor-detect.ts new file mode 100644 index 0000000..0fa0bc1 --- /dev/null +++ b/packages/router/src/tree/factor-detect.ts @@ -0,0 +1,120 @@ +import type { SegmentNode } from './segment-tree'; + +interface TenantFactor { + keyToTerminal: Map; + sharedNext: SegmentNode; +} + +const tenantFactorStore = new WeakMap(); + +function getTenantFactor(node: SegmentNode): TenantFactor | undefined { + return tenantFactorStore.get(node); +} + +function setTenantFactor(node: SegmentNode, factor: TenantFactor): void { + tenantFactorStore.set(node, factor); +} + +function detectTenantFactor(root: SegmentNode, minSiblings = 1000): TenantFactor | null { + if (root.store !== null) { + return null; + } + if (root.paramChild !== null || root.wildcardStore !== null) { + return null; + } + if (root.staticChildren === null) { + return null; + } + + const keys: string[] = []; + for (const k in root.staticChildren) { + keys.push(k); + } + if (keys.length < minSiblings) { + return null; + } + + const firstChild = root.staticChildren[keys[0]!]!; + const baseStore = leafStoreOf(firstChild); + if (baseStore === null) { + return null; + } + + const keyToTerminal = new Map(); + keyToTerminal.set(keys[0]!, baseStore); + for (let i = 1; i < keys.length; i++) { + const k = keys[i]!; + const child = root.staticChildren[k]!; + if (!subtreeShapesEqual(firstChild, child)) { + return null; + } + const store = leafStoreOf(child); + if (store === null) { + return null; + } + keyToTerminal.set(k, store); + } + return { keyToTerminal, sharedNext: firstChild }; +} + +function subtreeShapesEqual(a: SegmentNode, b: SegmentNode): boolean { + if ((a.store === null) !== (b.store === null)) { + return false; + } + if ((a.singleChildKey === null) !== (b.singleChildKey === null)) { + return false; + } + if (a.singleChildKey !== null) { + if (a.singleChildKey !== b.singleChildKey) { + return false; + } + if (!subtreeShapesEqual(a.singleChildNext!, b.singleChildNext!)) { + return false; + } + } + + let p1 = a.paramChild; + let p2 = b.paramChild; + while (p1 !== null && p2 !== null) { + if (p1.name !== p2.name) { + return false; + } + if (p1.patternSource !== p2.patternSource) { + return false; + } + if (!subtreeShapesEqual(p1.next, p2.next)) { + return false; + } + p1 = p1.nextSibling; + p2 = p2.nextSibling; + } + if (p1 !== null || p2 !== null) { + return false; + } + + return true; +} + +function leafStoreOf(node: SegmentNode): number | null { + let cur: SegmentNode = node; + while (true) { + if (cur.store !== null) { + if (cur.paramChild !== null || cur.singleChildKey !== null || cur.staticChildren !== null || cur.wildcardStore !== null) { + return null; + } + return cur.store; + } + if (cur.paramChild !== null && cur.paramChild.nextSibling === null) { + cur = cur.paramChild.next; + continue; + } + if (cur.singleChildKey !== null && cur.singleChildNext !== null && cur.staticChildren === null) { + cur = cur.singleChildNext; + continue; + } + return null; + } +} + +export { detectTenantFactor, getTenantFactor, setTenantFactor }; +export type { TenantFactor }; diff --git a/packages/router/src/tree/index.ts b/packages/router/src/tree/index.ts new file mode 100644 index 0000000..660381d --- /dev/null +++ b/packages/router/src/tree/index.ts @@ -0,0 +1,16 @@ +export type { PathPart } from './path-part'; +export { PathPartType, WildcardOrigin } from './path-part'; + +export type { SegmentNode, ParamSegment } from './segment-tree'; +export { createSegmentNode, forEachStaticChild, hasAnyStaticChild, insertIntoSegmentTree } from './segment-tree'; + +export type { SegmentTreeUndoLog } from './undo'; +export { UndoKind, applyUndo, pushStaticBucketResetUndo, pushStaticMapDeleteUndo } from './undo'; + +export { compactSegmentTree, hasAmbiguousNode } from './traversal'; + +export type { TenantFactor } from './factor-detect'; +export { detectTenantFactor, getTenantFactor, setTenantFactor } from './factor-detect'; + +export type { PatternTesterFn } from './pattern-tester'; +export { TESTER_PASS } from './pattern-tester'; diff --git a/packages/router/src/tree/node-types.ts b/packages/router/src/tree/node-types.ts new file mode 100644 index 0000000..aa3e356 --- /dev/null +++ b/packages/router/src/tree/node-types.ts @@ -0,0 +1,26 @@ +import type { PatternTesterFn } from './pattern-tester'; + +import { WildcardOrigin } from './path-part'; + +interface SegmentNode { + store: number | null; + staticChildren: Record | null; + singleChildKey: string | null; + singleChildNext: SegmentNode | null; + paramChild: ParamSegment | null; + wildcardStore: number | null; + wildcardName: string | null; + wildcardOrigin: WildcardOrigin | null; + staticPrefix: string[] | null; +} + +interface ParamSegment { + name: string; + tester: PatternTesterFn | null; + patternSource: string | null; + ownerRouteID: number; + next: SegmentNode; + nextSibling: ParamSegment | null; +} + +export type { ParamSegment, SegmentNode }; diff --git a/packages/router/src/tree/path-part.ts b/packages/router/src/tree/path-part.ts new file mode 100644 index 0000000..1d79e82 --- /dev/null +++ b/packages/router/src/tree/path-part.ts @@ -0,0 +1,15 @@ +export enum PathPartType { + Static = 'static', + Param = 'param', + Wildcard = 'wildcard', +} + +export enum WildcardOrigin { + Star = 'star', + Multi = 'multi', +} + +export type PathPart = + | { type: PathPartType.Static; value: string; segments: string[] } + | { type: PathPartType.Param; name: string; pattern: string | null; optional: boolean } + | { type: PathPartType.Wildcard; name: string; origin: WildcardOrigin }; diff --git a/packages/router/src/tree/pattern-tester.spec.ts b/packages/router/src/tree/pattern-tester.spec.ts new file mode 100644 index 0000000..f77050d --- /dev/null +++ b/packages/router/src/tree/pattern-tester.spec.ts @@ -0,0 +1,181 @@ +import { describe, it, expect } from 'bun:test'; + +import { buildPatternTester, TESTER_FAIL, TESTER_PASS } from './pattern-tester'; + +describe('buildPatternTester', () => { + it('should return PASS for digit string with digit shortcut', () => { + const tester = buildPatternTester('\\d+', /^\d+$/); + + expect(tester('123')).toBe(TESTER_PASS); + }); + + it('should return FAIL for non-digit string with digit shortcut', () => { + const tester = buildPatternTester('\\d+', /^\d+$/); + + expect(tester('abc')).toBe(TESTER_FAIL); + }); + + it('should return FAIL for empty string with digit shortcut', () => { + const tester = buildPatternTester('\\d+', /^\d+$/); + + expect(tester('')).toBe(TESTER_FAIL); + }); + + it('should match \\d{1,} as digit shortcut', () => { + const tester = buildPatternTester('\\d{1,}', /^\d{1,}$/); + + expect(tester('99')).toBe(TESTER_PASS); + expect(tester('abc')).toBe(TESTER_FAIL); + }); + + it('should match [0-9]+ as digit shortcut', () => { + const tester = buildPatternTester('[0-9]+', /^[0-9]+$/); + + expect(tester('42')).toBe(TESTER_PASS); + expect(tester('xx')).toBe(TESTER_FAIL); + }); + + it('should match [0-9]{1,} as digit shortcut', () => { + const tester = buildPatternTester('[0-9]{1,}', /^[0-9]{1,}$/); + + expect(tester('7')).toBe(TESTER_PASS); + expect(tester('')).toBe(TESTER_FAIL); + }); + + it('should return PASS for alpha string with alpha shortcut', () => { + const tester = buildPatternTester('[a-zA-Z]+', /^[a-zA-Z]+$/); + + expect(tester('abc')).toBe(TESTER_PASS); + }); + + it('should return FAIL for digits with alpha shortcut', () => { + const tester = buildPatternTester('[a-zA-Z]+', /^[a-zA-Z]+$/); + + expect(tester('123')).toBe(TESTER_FAIL); + }); + + it('should return FAIL for empty string with alpha shortcut', () => { + const tester = buildPatternTester('[a-zA-Z]+', /^[a-zA-Z]+$/); + + expect(tester('')).toBe(TESTER_FAIL); + }); + + it('should match [A-Za-z]+ as alpha shortcut', () => { + const tester = buildPatternTester('[A-Za-z]+', /^[A-Za-z]+$/); + + expect(tester('Hello')).toBe(TESTER_PASS); + expect(tester('123')).toBe(TESTER_FAIL); + }); + + it('should return PASS for alphanumeric with \\w+ shortcut', () => { + const tester = buildPatternTester('\\w+', /^\w+$/); + + expect(tester('abc_123')).toBe(TESTER_PASS); + }); + + it('should return FAIL for empty string with \\w+ shortcut', () => { + const tester = buildPatternTester('\\w+', /^\w+$/); + + expect(tester('')).toBe(TESTER_FAIL); + }); + + it('should reject special chars with \\w+ shortcut', () => { + const tester = buildPatternTester('\\w+', /^\w+$/); + + expect(tester('abc@def')).toBe(TESTER_FAIL); + }); + + it('should accept dash and underscore with alphanum dash shortcut', () => { + const tester = buildPatternTester('[A-Za-z0-9_-]+', /^[A-Za-z0-9_-]+$/); + + expect(tester('foo-bar_baz')).toBe(TESTER_PASS); + }); + + it('should match \\w{1,} as alphanum shortcut', () => { + const tester = buildPatternTester('\\w{1,}', /^\w{1,}$/); + + expect(tester('test')).toBe(TESTER_PASS); + expect(tester('')).toBe(TESTER_FAIL); + }); + + it('should return PASS for non-slash string with [^/]+ shortcut', () => { + const tester = buildPatternTester('[^/]+', /^[^/]+$/); + + expect(tester('hello')).toBe(TESTER_PASS); + }); + + it('should return FAIL for empty string with [^/]+ shortcut', () => { + const tester = buildPatternTester('[^/]+', /^[^/]+$/); + + expect(tester('')).toBe(TESTER_FAIL); + }); + + it('should return FAIL for value containing slash with [^/]+ shortcut', () => { + const tester = buildPatternTester('[^/]+', /^[^/]+$/); + + expect(tester('a/b')).toBe(TESTER_FAIL); + }); + + it('should use compiled.test() for unknown custom pattern', () => { + const tester = buildPatternTester('\\d{4}-\\d{2}-\\d{2}', /^\d{4}-\d{2}-\d{2}$/); + + expect(tester('2024-01-15')).toBe(TESTER_PASS); + expect(tester('not-a-date')).toBe(TESTER_FAIL); + }); + + it('should use compiled.test() when source is empty string', () => { + const tester = buildPatternTester('', /^.*$/); + + expect(tester('anything')).toBe(TESTER_PASS); + }); + + describe('character-range boundaries (off-by-one guards)', () => { + it('digit shortcut accepts 0 and 9, rejects the adjacent codes / and :', () => { + const tester = buildPatternTester('\\d+', /^\d+$/); + + expect(tester('0')).toBe(TESTER_PASS); // 48, lower edge + expect(tester('9')).toBe(TESTER_PASS); // 57, upper edge + expect(tester('/')).toBe(TESTER_FAIL); // 47, just below 0 + expect(tester(':')).toBe(TESTER_FAIL); // 58, just above 9 + }); + + it('alpha shortcut accepts A Z a z, rejects the adjacent codes @ [ ` {', () => { + const tester = buildPatternTester('[a-zA-Z]+', /^[a-zA-Z]+$/); + + expect(tester('A')).toBe(TESTER_PASS); // 65 + expect(tester('Z')).toBe(TESTER_PASS); // 90 + expect(tester('a')).toBe(TESTER_PASS); // 97 + expect(tester('z')).toBe(TESTER_PASS); // 122 + expect(tester('@')).toBe(TESTER_FAIL); // 64, just below A + expect(tester('[')).toBe(TESTER_FAIL); // 91, just above Z + expect(tester('`')).toBe(TESTER_FAIL); // 96, just below a + expect(tester('{')).toBe(TESTER_FAIL); // 123, just above z + }); + + it('word shortcut accepts boundary alnum and underscore, rejects adjacent codes', () => { + const tester = buildPatternTester('\\w+', /^\w+$/); + + expect(tester('0')).toBe(TESTER_PASS); + expect(tester('9')).toBe(TESTER_PASS); + expect(tester('A')).toBe(TESTER_PASS); + expect(tester('Z')).toBe(TESTER_PASS); + expect(tester('a')).toBe(TESTER_PASS); + expect(tester('z')).toBe(TESTER_PASS); + expect(tester('_')).toBe(TESTER_PASS); // 95 + expect(tester('^')).toBe(TESTER_FAIL); // 94, just below _ + expect(tester('@')).toBe(TESTER_FAIL); + expect(tester('[')).toBe(TESTER_FAIL); + expect(tester('{')).toBe(TESTER_FAIL); + }); + + it('word-dash shortcut additionally accepts dash, rejects its adjacent codes', () => { + const tester = buildPatternTester('[\\w-]+', /^[\w-]+$/); + + expect(tester('-')).toBe(TESTER_PASS); // 45 + expect(tester('0')).toBe(TESTER_PASS); + expect(tester('_')).toBe(TESTER_PASS); + expect(tester(',')).toBe(TESTER_FAIL); // 44, just below dash + expect(tester('.')).toBe(TESTER_FAIL); // 46, just above dash + }); + }); +}); diff --git a/packages/router/src/tree/pattern-tester.ts b/packages/router/src/tree/pattern-tester.ts new file mode 100644 index 0000000..eda135f --- /dev/null +++ b/packages/router/src/tree/pattern-tester.ts @@ -0,0 +1,112 @@ +const TESTER_FAIL = 0 as const; +const TESTER_PASS = 1 as const; + +type TesterResult = typeof TESTER_FAIL | typeof TESTER_PASS; + +type PatternTesterFn = (value: string) => TesterResult; + +const DIGIT_PATTERNS = new Set(['\\d+', '\\d{1,}', '[0-9]+', '[0-9]{1,}']); +const ALPHA_PATTERNS = new Set(['[a-zA-Z]+', '[A-Za-z]+']); +const WORD_PATTERNS = new Set(['\\w+', '\\w{1,}']); +const WORD_DASH_PATTERNS = new Set(['[A-Za-z0-9_\\-]+', '[A-Za-z0-9_-]+', '[\\w-]+', '[\\w\\-]+']); + +function buildPatternTester(source: string, compiled: RegExp): PatternTesterFn { + if (source.length > 0) { + if (DIGIT_PATTERNS.has(source)) { + return value => (isAllDigits(value) ? TESTER_PASS : TESTER_FAIL); + } + + if (ALPHA_PATTERNS.has(source)) { + return value => (isAlpha(value) ? TESTER_PASS : TESTER_FAIL); + } + + if (WORD_PATTERNS.has(source)) { + return value => (isWord(value) ? TESTER_PASS : TESTER_FAIL); + } + + if (WORD_DASH_PATTERNS.has(source)) { + return value => (isWordDash(value) ? TESTER_PASS : TESTER_FAIL); + } + + if (source === '[^/]+') { + return value => (value.length > 0 && !value.includes('/') ? TESTER_PASS : TESTER_FAIL); + } + } + + return value => (compiled.test(value) ? TESTER_PASS : TESTER_FAIL); +} + +function isAllDigits(value: string): boolean { + if (value.length === 0) { + return false; + } + + for (let i = 0; i < value.length; i++) { + const code = value.charCodeAt(i); + + if (code < 48 || code > 57) { + return false; + } + } + + return true; +} + +function isAlpha(value: string): boolean { + if (!value.length) { + return false; + } + + for (let i = 0; i < value.length; i++) { + const code = value.charCodeAt(i); + const upper = code >= 65 && code <= 90; + const lower = code >= 97 && code <= 122; + + if (!upper && !lower) { + return false; + } + } + + return true; +} + +function isWord(value: string): boolean { + if (!value.length) { + return false; + } + + for (let i = 0; i < value.length; i++) { + const code = value.charCodeAt(i); + const upper = code >= 65 && code <= 90; + const lower = code >= 97 && code <= 122; + const digit = code >= 48 && code <= 57; + + if (!upper && !lower && !digit && code !== 95) { + return false; + } + } + + return true; +} + +function isWordDash(value: string): boolean { + if (!value.length) { + return false; + } + + for (let i = 0; i < value.length; i++) { + const code = value.charCodeAt(i); + const upper = code >= 65 && code <= 90; + const lower = code >= 97 && code <= 122; + const digit = code >= 48 && code <= 57; + + if (!upper && !lower && !digit && code !== 45 && code !== 95) { + return false; + } + } + + return true; +} + +export { buildPatternTester, TESTER_FAIL, TESTER_PASS }; +export type { PatternTesterFn }; diff --git a/packages/router/src/tree/segment-tree.spec.ts b/packages/router/src/tree/segment-tree.spec.ts new file mode 100644 index 0000000..57cedcc --- /dev/null +++ b/packages/router/src/tree/segment-tree.spec.ts @@ -0,0 +1,270 @@ +import { describe, expect, it } from 'bun:test'; + +import type { PatternTesterFn } from './pattern-tester'; +import type { SegmentNode } from './segment-tree'; +import type { SegmentTreeUndoLog } from './undo'; + +import { expectErrorData, expectErrorKind, expectNotErrorData, expectDefined } from '../../test/test-utils'; +import { PathPartType, WildcardOrigin } from '../tree'; +import { RouterErrorKind } from '../types'; +import { + attachStoreTerminal, + attachWildcardTerminal, + createSegmentNode, + insertParamPart, + insertStaticSegments, + isResolvedTesterError, + resolveOrCompileTester, +} from './segment-tree'; + +const newUndo = (): SegmentTreeUndoLog => []; +const newCache = (): Map => new Map(); + +describe('isResolvedTesterError', () => { + it('returns false for null', () => { + expect(isResolvedTesterError(null)).toBe(false); + }); + + it('returns false for a function (PatternTesterFn)', () => { + const fn: PatternTesterFn = () => 1 as const; + expect(isResolvedTesterError(fn)).toBe(false); + }); + + it('returns true for an object carrying a `kind` field (RouterErrorData)', () => { + expect(isResolvedTesterError({ kind: RouterErrorKind.RouteParse, message: 'x', suggestion: 'fix' })).toBe(true); + }); +}); + +describe('resolveOrCompileTester', () => { + it('returns null for an unconstrained param (pattern === null)', () => { + const tester = resolveOrCompileTester({ name: 'id', pattern: null }, newCache(), newUndo()); + expect(tester).toBeNull(); + }); + + it('compiles a fresh tester and caches it on first sight', () => { + const cache = newCache(); + const undo = newUndo(); + const t = resolveOrCompileTester({ name: 'id', pattern: '\\d+' }, cache, undo); + expect(typeof t).toBe('function'); + expect(cache.size).toBe(1); + expect(undo).toHaveLength(1); + }); + + it('returns the cached tester (no fresh push) on a repeat lookup', () => { + const cache = newCache(); + const undo = newUndo(); + const first = resolveOrCompileTester({ name: 'id', pattern: '\\d+' }, cache, undo); + const second = resolveOrCompileTester({ name: 'id', pattern: '\\d+' }, cache, undo); + expect(second).toBe(first); + expect(undo).toHaveLength(1); + }); + + it('returns route-parse error data for an invalid regex pattern', () => { + const out = resolveOrCompileTester({ name: 'id', pattern: '[unclosed' }, newCache(), newUndo()); + expect(isResolvedTesterError(out)).toBe(true); + const data = expectErrorData(out); + expect(data.kind).toBe(RouterErrorKind.RouteParse); + expect(data.message).toContain('Invalid regex'); + }); +}); + +describe('insertStaticSegments', () => { + it('returns the descended node and stores the inline single-static slot on first insert', () => { + const root = createSegmentNode(); + const undo = newUndo(); + const out = insertStaticSegments(root, ['users'], undo); + expect(out).not.toHaveProperty('kind'); + expect(root.singleChildKey).toBe('users'); + expect(root.singleChildNext).toBe(out as SegmentNode); + expect(undo).toHaveLength(1); + }); + + it('reuses the existing singleChildKey slot on a matching second insert', () => { + const root = createSegmentNode(); + const undo = newUndo(); + const a = insertStaticSegments(root, ['users'], undo) as SegmentNode; + const b = insertStaticSegments(root, ['users'], undo) as SegmentNode; + expect(a).toBe(b); + }); + + it('promotes inline slot to a Record on second distinct insert', () => { + const root = createSegmentNode(); + const undo = newUndo(); + insertStaticSegments(root, ['users'], undo); + insertStaticSegments(root, ['posts'], undo); + expect(root.singleChildKey).toBeNull(); + expect(root.staticChildren).not.toBeNull(); + expect(Object.keys(root.staticChildren!).sort()).toEqual(['posts', 'users']); + }); + + it('returns a route-conflict error when descending into a node that already has a wildcard at the same position', () => { + const root = createSegmentNode(); + root.wildcardStore = 1; + root.wildcardName = 'rest'; + root.wildcardOrigin = WildcardOrigin.Star; + const out = insertStaticSegments(root, ['users'], newUndo()); + const data = expectErrorData(out); + const conflict = expectErrorKind(data, RouterErrorKind.RouteConflict); + expect(conflict.conflictsWith).toBe('*rest'); + }); +}); + +describe('insertParamPart', () => { + it('creates a fresh paramChild on first insertion and returns the descended node', () => { + const root = createSegmentNode(); + const undo = newUndo(); + const out = insertParamPart( + root, + { type: PathPartType.Param, name: 'id', pattern: null, optional: false }, + newCache(), + 0, + undo, + ); + expect(out).not.toHaveProperty('kind'); + expect(root.paramChild).not.toBeNull(); + expect(root.paramChild!.name).toBe('id'); + expect(undo).toHaveLength(1); + }); + + it('reuses the matching same-name same-pattern paramChild on a second insertion', () => { + const root = createSegmentNode(); + const undo = newUndo(); + const cache = newCache(); + const part = { type: PathPartType.Param as const, name: 'id', pattern: null, optional: false }; + const a = expectNotErrorData(insertParamPart(root, part, cache, 0, undo)); + const b = expectNotErrorData(insertParamPart(root, part, cache, 0, undo)); + expect(a.node).toBe(b.node); + expect(undo).toHaveLength(1); + }); + + it('returns route-conflict when registering a wildcard-positioned node first', () => { + const root = createSegmentNode(); + root.wildcardStore = 1; + root.wildcardName = 'rest'; + root.wildcardOrigin = WildcardOrigin.Star; + const out = insertParamPart( + root, + { type: PathPartType.Param, name: 'id', pattern: null, optional: false }, + newCache(), + 0, + newUndo(), + ); + const data = expectErrorData(out); + const conflict = expectErrorKind(data, RouterErrorKind.RouteConflict); + expect(conflict.conflictsWith).toBe('*rest'); + }); + + it('returns route-conflict when a same-name sibling has a conflicting regex pattern', () => { + const root = createSegmentNode(); + const cache = newCache(); + insertParamPart(root, { type: PathPartType.Param, name: 'id', pattern: '\\d+', optional: false }, cache, 0, newUndo()); + const out = insertParamPart( + root, + { type: PathPartType.Param, name: 'id', pattern: '[a-z]+', optional: false }, + cache, + 0, + newUndo(), + ); + const conflict = expectErrorKind(expectErrorData(out), RouterErrorKind.RouteConflict); + expect(conflict.segment).toBe('id'); + expect(conflict.conflictsWith).toBe(':id(\\d+)'); + }); + + it('returns route-conflict for a distinct later param made unreachable by a pattern-less earlier sibling from another route', () => { + const root = createSegmentNode(); + const cache = newCache(); + insertParamPart(root, { type: PathPartType.Param, name: 'a', pattern: null, optional: false }, cache, 0, newUndo()); + const out = insertParamPart( + root, + { type: PathPartType.Param, name: 'b', pattern: null, optional: false }, + cache, + 1, + newUndo(), + ); + const conflict = expectErrorKind(expectErrorData(out), RouterErrorKind.RouteConflict); + expect(conflict.segment).toBe('b'); + expect(conflict.conflictsWith).toBe('a'); + }); +}); + +describe('attachWildcardTerminal', () => { + it('writes the wildcard slot and pushes one undo entry on success', () => { + const node = createSegmentNode(); + const undo = newUndo(); + const out = attachWildcardTerminal(node, { type: PathPartType.Wildcard, name: 'rest', origin: WildcardOrigin.Star }, 7, undo); + expect(out).toBeUndefined(); + expect(node.wildcardStore).toBe(7); + expect(node.wildcardName).toBe('rest'); + expect(node.wildcardOrigin).toBe(WildcardOrigin.Star); + expect(undo).toHaveLength(1); + }); + + it('returns route-conflict when an existing wildcard at the same position has a different name', () => { + const node = createSegmentNode(); + node.wildcardStore = 1; + node.wildcardName = 'first'; + node.wildcardOrigin = WildcardOrigin.Star; + const out = attachWildcardTerminal( + node, + { type: PathPartType.Wildcard, name: 'second', origin: WildcardOrigin.Star }, + 9, + newUndo(), + ); + const data = expectDefined(out); + expect(data.kind).toBe(RouterErrorKind.RouteConflict); + }); + + it('returns route-duplicate when an existing wildcard has the same name', () => { + const node = createSegmentNode(); + node.wildcardStore = 1; + node.wildcardName = 'rest'; + node.wildcardOrigin = WildcardOrigin.Star; + const out = attachWildcardTerminal( + node, + { type: PathPartType.Wildcard, name: 'rest', origin: WildcardOrigin.Star }, + 9, + newUndo(), + ); + const data = expectDefined(out); + expect(data.kind).toBe(RouterErrorKind.RouteDuplicate); + }); + + it('returns route-conflict when a paramChild already occupies the position', () => { + const node = createSegmentNode(); + node.paramChild = { + name: 'id', + tester: null, + patternSource: null, + ownerRouteID: 0, + next: createSegmentNode(), + nextSibling: null, + }; + const out = attachWildcardTerminal( + node, + { type: PathPartType.Wildcard, name: 'rest', origin: WildcardOrigin.Star }, + 9, + newUndo(), + ); + const data = expectDefined(out); + expect(data.kind).toBe(RouterErrorKind.RouteConflict); + }); +}); + +describe('attachStoreTerminal', () => { + it('writes the store and pushes one undo entry on success', () => { + const node = createSegmentNode(); + const undo = newUndo(); + const out = attachStoreTerminal(node, 5, undo); + expect(out).toBeUndefined(); + expect(node.store).toBe(5); + expect(undo).toHaveLength(1); + }); + + it('returns route-duplicate when the node already has a store', () => { + const node = createSegmentNode(); + node.store = 1; + const out = attachStoreTerminal(node, 2, newUndo()); + const data = expectDefined(out); + expect(data.kind).toBe(RouterErrorKind.RouteDuplicate); + }); +}); diff --git a/packages/router/src/tree/segment-tree.ts b/packages/router/src/tree/segment-tree.ts new file mode 100644 index 0000000..f4d2aa1 --- /dev/null +++ b/packages/router/src/tree/segment-tree.ts @@ -0,0 +1,346 @@ +import type { Result } from '@zipbul/result'; + +import { err } from '@zipbul/result'; + +import type { RouterErrorData } from '../types'; +import type { ParamSegment, SegmentNode } from './node-types'; +import type { PathPart } from './path-part'; +import type { PatternTesterFn } from './pattern-tester'; +import type { SegmentTreeUndoLog } from './undo'; + +import { RouterErrorKind } from '../types'; +import { PathPartType, WildcardOrigin } from './path-part'; +import { buildPatternTester } from './pattern-tester'; +import { UndoKind, applyUndo } from './undo'; + +function hasAnyStaticChild(node: SegmentNode): boolean { + return node.singleChildKey !== null || node.staticChildren !== null; +} + +function forEachStaticChild(node: SegmentNode, fn: (key: string, child: SegmentNode) => void): void { + if (node.singleChildKey !== null && node.singleChildNext !== null) { + fn(node.singleChildKey, node.singleChildNext); + } + if (node.staticChildren !== null) { + for (const k in node.staticChildren) { + fn(k, node.staticChildren[k]!); + } + } +} + +function createSegmentNode(): SegmentNode { + return { + store: null, + staticChildren: null, + singleChildKey: null, + singleChildNext: null, + paramChild: null, + wildcardStore: null, + wildcardName: null, + wildcardOrigin: null, + staticPrefix: null, + }; +} + +function rollbackUndo(undo: SegmentTreeUndoLog, start: number): void { + for (let i = undo.length - 1; i >= start; i--) { + applyUndo(undo[i]!); + } + undo.length = start; +} + +function insertIntoSegmentTree( + root: SegmentNode, + parts: PathPart[], + handlerIndex: number, + testerCache: Map, + routeID: number, + undoLog: SegmentTreeUndoLog, +): Result { + let node = root; + const undoStart = undoLog.length; + + for (let i = 0; i < parts.length; i++) { + const part = parts[i]!; + + if (part.type === PathPartType.Static) { + const result = insertStaticSegments(node, part.segments, undoLog); + if (typeof result === 'object' && 'kind' in result) { + rollbackUndo(undoLog, undoStart); + return err(result); + } + node = result; + } else if (part.type === PathPartType.Param) { + const result = insertParamPart(node, part, testerCache, routeID, undoLog); + if ('kind' in result) { + rollbackUndo(undoLog, undoStart); + return err(result); + } + node = result.node; + } else { + const fail = attachWildcardTerminal(node, part, handlerIndex, undoLog); + if (fail !== undefined) { + rollbackUndo(undoLog, undoStart); + return err(fail); + } + return; + } + } + + const fail = attachStoreTerminal(node, handlerIndex, undoLog); + if (fail !== undefined) { + rollbackUndo(undoLog, undoStart); + return err(fail); + } +} + +function insertStaticSegments( + node: SegmentNode, + segs: ReadonlyArray, + undoLog: SegmentTreeUndoLog, +): SegmentNode | RouterErrorData { + for (let s = 0; s < segs.length; s++) { + const seg = segs[s]!; + if (node.singleChildKey === seg && node.singleChildNext !== null && node.wildcardStore === null) { + node = node.singleChildNext; + continue; + } + const sc = node.staticChildren; + if (sc !== null && node.wildcardStore === null) { + const child = sc[seg]; + if (child !== undefined) { + node = child; + continue; + } + } + + if (node.wildcardStore !== null) { + return { + kind: RouterErrorKind.RouteConflict, + message: `Static route conflicts with existing wildcard '*${node.wildcardName}' at the same position`, + segment: seg, + conflictsWith: `*${node.wildcardName}`, + suggestion: `Remove the wildcard '*${node.wildcardName}' or move the static segment to a different prefix.`, + }; + } + + if (node.singleChildKey === null && node.staticChildren === null) { + const fresh = createSegmentNode(); + node.singleChildKey = seg; + node.singleChildNext = fresh; + undoLog.push({ k: UndoKind.SingleChildClear, n: node }); + node = fresh; + continue; + } + + let children = node.staticChildren; + if (children === null) { + children = Object.create(null) as Record; + node.staticChildren = children; + undoLog.push({ k: UndoKind.StaticChildrenInit, n: node }); + } + if (node.singleChildKey !== null && node.singleChildNext !== null) { + const promotedKey = node.singleChildKey; + const promotedNext = node.singleChildNext; + children[promotedKey] = promotedNext; + node.singleChildKey = null; + node.singleChildNext = null; + undoLog.push({ k: UndoKind.SingleChildRestore, n: node, key: promotedKey, next: promotedNext }); + undoLog.push({ k: UndoKind.StaticChildAdd, p: children, key: promotedKey }); + } + + const fresh = createSegmentNode(); + children[seg] = fresh; + undoLog.push({ k: UndoKind.StaticChildAdd, p: children, key: seg }); + node = fresh; + } + return node; +} + +function insertParamPart( + node: SegmentNode, + part: { type: PathPartType.Param; name: string; pattern: string | null; optional: boolean }, + testerCache: Map, + routeID: number, + undoLog: SegmentTreeUndoLog, +): { node: SegmentNode } | RouterErrorData { + if (node.wildcardStore !== null) { + return { + kind: RouterErrorKind.RouteConflict, + message: `Parameter ':${part.name}' conflicts with existing wildcard '*${node.wildcardName}' at the same position`, + segment: part.name, + conflictsWith: `*${node.wildcardName}`, + suggestion: `Remove the wildcard '*${node.wildcardName}' or move the parameter to a different prefix.`, + }; + } + + const testerOrErr = resolveOrCompileTester(part, testerCache, undoLog); + if (isResolvedTesterError(testerOrErr)) { + return testerOrErr; + } + const tester = testerOrErr; + + if (node.paramChild === null) { + const created: ParamSegment = { + name: part.name, + tester, + patternSource: part.pattern, + ownerRouteID: routeID, + next: createSegmentNode(), + nextSibling: null, + }; + node.paramChild = created; + undoLog.push({ k: UndoKind.ParamChildSet, n: node }); + return { node: created.next }; + } + + let p: ParamSegment | null = node.paramChild; + let prev: ParamSegment | null = null; + let matched: ParamSegment | null = null; + + while (p !== null) { + if (p.name === part.name && p.patternSource === part.pattern) { + matched = p; + break; + } + + if (p.name === part.name && p.patternSource !== part.pattern) { + return { + kind: RouterErrorKind.RouteConflict, + message: `Parameter ':${part.name}' has conflicting regex patterns`, + segment: part.name, + conflictsWith: `:${p.name}${p.patternSource !== null ? `(${p.patternSource})` : ''}`, + suggestion: 'Unify the regex pattern across both routes, or rename one parameter.', + }; + } + + if (p.patternSource === null && p.ownerRouteID !== routeID) { + return { + kind: RouterErrorKind.RouteConflict, + message: `Parameter ':${part.name}' is unreachable — earlier sibling ':${p.name}' (registered by a different route) has no regex pattern and matches every value at this position.`, + segment: part.name, + conflictsWith: p.name, + suggestion: 'Add a regex pattern to disambiguate, or remove this route.', + }; + } + + prev = p; + p = p.nextSibling; + } + + if (matched !== null) { + return { node: matched.next }; + } + + const fresh: ParamSegment = { + name: part.name, + tester, + patternSource: part.pattern, + ownerRouteID: routeID, + next: createSegmentNode(), + nextSibling: null, + }; + const tail = prev!; + tail.nextSibling = fresh; + undoLog.push({ k: UndoKind.ParamSiblingAdd, prev: tail }); + return { node: fresh.next }; +} + +function isResolvedTesterError(result: PatternTesterFn | null | RouterErrorData): result is RouterErrorData { + return result !== null && typeof result === 'object' && 'kind' in result; +} + +function resolveOrCompileTester( + part: { name: string; pattern: string | null }, + testerCache: Map, + undoLog: SegmentTreeUndoLog, +): PatternTesterFn | null | RouterErrorData { + if (part.pattern === null) { + return null; + } + const cached = testerCache.get(part.pattern); + if (cached !== undefined) { + return cached; + } + try { + const compiled = new RegExp(`^(?:${part.pattern})$`); + const tester = buildPatternTester(part.pattern, compiled); + testerCache.set(part.pattern, tester); + undoLog.push({ k: UndoKind.TesterAdd, cache: testerCache, key: part.pattern }); + return tester; + } catch (e) { + return { + kind: RouterErrorKind.RouteParse, + message: `Invalid regex pattern in parameter ':${part.name}': ${e instanceof Error ? e.message : String(e)}`, + segment: part.name, + suggestion: 'Fix the regex syntax. Anchors are stripped automatically; do not include ^ or $.', + }; + } +} + +function attachWildcardTerminal( + node: SegmentNode, + part: { type: PathPartType.Wildcard; name: string; origin: WildcardOrigin }, + handlerIndex: number, + undoLog: SegmentTreeUndoLog, +): RouterErrorData | undefined { + if (node.wildcardStore !== null) { + if (node.wildcardName !== part.name) { + return { + kind: RouterErrorKind.RouteConflict, + message: `Wildcard '*${part.name}' conflicts with existing wildcard '*${node.wildcardName}'`, + segment: part.name, + conflictsWith: `*${node.wildcardName}`, + suggestion: `Rename one wildcard so the prefix has a single capture name, or split the routes across HTTP methods.`, + }; + } + return { + kind: RouterErrorKind.RouteDuplicate, + message: 'Wildcard route already exists at this position', + suggestion: 'Use a different path or HTTP method.', + }; + } + + if (node.paramChild !== null) { + return { + kind: RouterErrorKind.RouteConflict, + message: `Wildcard '*${part.name}' conflicts with existing parameter at the same position`, + segment: part.name, + conflictsWith: `:${node.paramChild.name}`, + suggestion: `Remove the parameter ':${node.paramChild.name}' or change the wildcard to a static prefix.`, + }; + } + + node.wildcardStore = handlerIndex; + node.wildcardName = part.name; + node.wildcardOrigin = part.origin; + undoLog.push({ k: UndoKind.WildcardSet, n: node }); + return undefined; +} + +function attachStoreTerminal(node: SegmentNode, handlerIndex: number, undoLog: SegmentTreeUndoLog): RouterErrorData | undefined { + if (node.store !== null) { + return { + kind: RouterErrorKind.RouteDuplicate, + message: 'Terminal route already exists at this position', + suggestion: 'Use a different path or HTTP method.', + }; + } + node.store = handlerIndex; + undoLog.push({ k: UndoKind.StoreSet, n: node }); + return undefined; +} + +export { + attachStoreTerminal, + attachWildcardTerminal, + createSegmentNode, + forEachStaticChild, + hasAnyStaticChild, + insertIntoSegmentTree, + insertParamPart, + insertStaticSegments, + isResolvedTesterError, + resolveOrCompileTester, +}; +export type { ParamSegment, SegmentNode } from './node-types'; diff --git a/packages/router/src/tree/traversal.spec.ts b/packages/router/src/tree/traversal.spec.ts new file mode 100644 index 0000000..370c22d --- /dev/null +++ b/packages/router/src/tree/traversal.spec.ts @@ -0,0 +1,136 @@ +import { describe, expect, it } from 'bun:test'; + +import type { SegmentNode } from './segment-tree'; + +import { createSegmentNode } from './segment-tree'; +import { extendStaticPrefix, foldStaticChain, peekSingleStaticChild, rewireStaticChild } from './traversal'; + +function inlineChain(...keys: string[]): SegmentNode { + const root = createSegmentNode(); + let cur = root; + for (const k of keys) { + const next = createSegmentNode(); + cur.singleChildKey = k; + cur.singleChildNext = next; + cur = next; + } + cur.store = 0; + return root; +} + +describe('extendStaticPrefix', () => { + it('returns the folded array unchanged when the target had no prior prefix', () => { + expect(extendStaticPrefix(['a', 'b'], null)).toEqual(['a', 'b']); + }); + + it('concatenates folded onto an existing prefix', () => { + expect(extendStaticPrefix(['a', 'b'], ['c', 'd'])).toEqual(['a', 'b', 'c', 'd']); + }); + + it('returns a fresh array (does not mutate either input)', () => { + const folded = ['a']; + const existing = ['b']; + const out = extendStaticPrefix(folded, existing); + expect(out).not.toBe(folded); + expect(out).not.toBe(existing); + expect(folded).toEqual(['a']); + expect(existing).toEqual(['b']); + }); +}); + +describe('peekSingleStaticChild', () => { + it('returns the inline single-child slot when present', () => { + const node = createSegmentNode(); + const child = createSegmentNode(); + node.singleChildKey = 'users'; + node.singleChildNext = child; + const peek = peekSingleStaticChild(node); + expect(peek.key).toBe('users'); + expect(peek.child).toBe(child); + expect(peek.many).toBe(false); + }); + + it('returns the single Record entry and many=false when the Record has exactly one key', () => { + const node = createSegmentNode(); + const child = createSegmentNode(); + node.staticChildren = Object.create(null) as Record; + node.staticChildren['only'] = child; + const peek = peekSingleStaticChild(node); + expect(peek.key).toBe('only'); + expect(peek.child).toBe(child); + expect(peek.many).toBe(false); + }); + + it('returns many=true when the Record carries 2+ keys', () => { + const node = createSegmentNode(); + node.staticChildren = Object.create(null) as Record; + node.staticChildren['a'] = createSegmentNode(); + node.staticChildren['b'] = createSegmentNode(); + const peek = peekSingleStaticChild(node); + expect(peek.many).toBe(true); + }); +}); + +describe('foldStaticChain', () => { + it('returns target=start with empty folded for a node carrying a store', () => { + const node = createSegmentNode(); + node.store = 5; + const out = foldStaticChain(node); + expect(out.target).toBe(node); + expect(out.folded).toEqual([]); + }); + + it('walks the chain when each link has exactly one inline child', () => { + const root = inlineChain('a', 'b', 'c'); + const out = foldStaticChain(root.singleChildNext!); + expect(out.folded).toEqual(['b', 'c']); + expect(out.target.store).toBe(0); + }); + + it('stops at a node with a paramChild — folds up to but not past the mixed node', () => { + const root = createSegmentNode(); + const mid = createSegmentNode(); + root.singleChildKey = 'a'; + root.singleChildNext = mid; + mid.paramChild = { + name: 'id', + tester: null, + patternSource: null, + ownerRouteID: 0, + next: createSegmentNode(), + nextSibling: null, + }; + const out = foldStaticChain(root); + expect(out.folded).toEqual(['a']); + expect(out.target).toBe(mid); + }); +}); + +describe('rewireStaticChild', () => { + it('updates the inline-slot pointer when the key matches singleChildKey', () => { + const parent = createSegmentNode(); + const oldChild = createSegmentNode(); + const newChild = createSegmentNode(); + parent.singleChildKey = 'a'; + parent.singleChildNext = oldChild; + rewireStaticChild(parent, 'a', newChild); + expect(parent.singleChildNext).toBe(newChild); + }); + + it('updates the Record entry when the key sits in staticChildren', () => { + const parent = createSegmentNode(); + const oldChild = createSegmentNode(); + const newChild = createSegmentNode(); + parent.staticChildren = Object.create(null) as Record; + parent.staticChildren['a'] = oldChild; + rewireStaticChild(parent, 'a', newChild); + expect(parent.staticChildren['a']).toBe(newChild); + }); + + it('is a no-op when the key is unknown to the parent', () => { + const parent = createSegmentNode(); + rewireStaticChild(parent, 'missing', createSegmentNode()); + expect(parent.singleChildKey).toBeNull(); + expect(parent.staticChildren).toBeNull(); + }); +}); diff --git a/packages/router/src/tree/traversal.ts b/packages/router/src/tree/traversal.ts new file mode 100644 index 0000000..3a19973 --- /dev/null +++ b/packages/router/src/tree/traversal.ts @@ -0,0 +1,128 @@ +import type { SegmentNode } from './segment-tree'; + +import { forEachStaticChild, hasAnyStaticChild } from './segment-tree'; + +export function compactSegmentTree(root: SegmentNode): void { + const prefixIntern = new Map(); + const internPrefix = (parts: string[]): string[] => { + const key = parts.join('\x00'); + const existing = prefixIntern.get(key); + if (existing !== undefined) { + return existing; + } + prefixIntern.set(key, parts); + return parts; + }; + + const stack: SegmentNode[] = [root]; + const visited = new Set(); + while (stack.length > 0) { + const node = stack.pop()!; + if (visited.has(node)) { + continue; + } + visited.add(node); + + forEachStaticChild(node, (key, child) => { + const { target, folded } = foldStaticChain(child); + if (folded.length > 0) { + target.staticPrefix = internPrefix(extendStaticPrefix(folded, target.staticPrefix)); + rewireStaticChild(node, key, target); + } + stack.push(target); + }); + + let p = node.paramChild; + while (p !== null) { + const { target, folded } = foldStaticChain(p.next); + if (folded.length > 0) { + target.staticPrefix = internPrefix(extendStaticPrefix(folded, target.staticPrefix)); + p.next = target; + } + stack.push(target); + p = p.nextSibling; + } + } +} + +export function peekSingleStaticChild(target: SegmentNode): { key: string; child: SegmentNode; many: boolean } { + if (target.singleChildKey !== null && target.singleChildNext !== null) { + return { key: target.singleChildKey, child: target.singleChildNext, many: false }; + } + let only: string | null = null; + let onlyChild: SegmentNode | null = null; + let many = false; + for (const k in target.staticChildren!) { + if (only === null) { + only = k; + onlyChild = target.staticChildren![k]!; + } else { + many = true; + break; + } + } + return { key: only!, child: onlyChild!, many }; +} + +export function foldStaticChain(start: SegmentNode): { target: SegmentNode; folded: string[] } { + const folded: string[] = []; + let target = start; + while ( + hasAnyStaticChild(target) && + target.paramChild === null && + target.wildcardStore === null && + target.store === null && + target.staticPrefix === null + ) { + const peek = peekSingleStaticChild(target); + if (peek.many || peek.key === null || peek.child === null) { + break; + } + folded.push(peek.key); + target = peek.child; + } + return { target, folded }; +} + +export function extendStaticPrefix(folded: string[], existing: string[] | null): string[] { + return existing === null ? folded : [...folded, ...existing]; +} + +export function rewireStaticChild(parent: SegmentNode, key: string, target: SegmentNode): void { + if (parent.singleChildKey === key) { + parent.singleChildNext = target; + return; + } + if (parent.staticChildren !== null && key in parent.staticChildren) { + parent.staticChildren[key] = target; + } +} + +export function hasAmbiguousNode(root: SegmentNode): boolean { + const stack: SegmentNode[] = [root]; + + while (stack.length > 0) { + const node = stack.pop()!; + + if (hasAnyStaticChild(node) && (node.paramChild !== null || node.wildcardStore !== null)) { + return true; + } + + if (node.paramChild !== null && node.paramChild.nextSibling !== null) { + return true; + } + + forEachStaticChild(node, (_, child) => { + stack.push(child); + }); + + let p = node.paramChild; + + while (p !== null) { + stack.push(p.next); + p = p.nextSibling; + } + } + + return false; +} diff --git a/packages/router/src/tree/undo.spec.ts b/packages/router/src/tree/undo.spec.ts new file mode 100644 index 0000000..ad048be --- /dev/null +++ b/packages/router/src/tree/undo.spec.ts @@ -0,0 +1,194 @@ +import { describe, expect, it } from 'bun:test'; + +import type { PatternTesterFn } from './pattern-tester'; +import type { ParamSegment } from './segment-tree'; +import type { SegmentTreeUndoLog } from './undo'; + +import { WildcardOrigin } from '../tree'; +import { createSegmentNode } from './segment-tree'; +import { UndoKind, applyUndo, pushStaticBucketResetUndo, pushStaticMapDeleteUndo } from './undo'; + +describe('applyUndo — segment-tree mutations', () => { + it('StaticChildrenInit clears the staticChildren slot', () => { + const n = createSegmentNode(); + n.staticChildren = Object.create(null) as Record>; + applyUndo({ k: UndoKind.StaticChildrenInit, n }); + expect(n.staticChildren).toBeNull(); + }); + + it('StaticChildAdd deletes the named key from a staticChildren Record', () => { + const p: Record> = Object.create(null); + const child = createSegmentNode(); + p['users'] = child; + applyUndo({ k: UndoKind.StaticChildAdd, p, key: 'users' }); + expect('users' in p).toBe(false); + }); + + it('ParamChildSet clears the paramChild slot', () => { + const n = createSegmentNode(); + n.paramChild = { + name: 'id', + tester: null, + patternSource: null, + ownerRouteID: 0, + next: createSegmentNode(), + nextSibling: null, + }; + applyUndo({ k: UndoKind.ParamChildSet, n }); + expect(n.paramChild).toBeNull(); + }); + + it('ParamSiblingAdd clears the nextSibling pointer on the prev sibling', () => { + const prev: ParamSegment = { + name: 'a', + tester: null, + patternSource: null, + ownerRouteID: 0, + next: createSegmentNode(), + nextSibling: null, + }; + prev.nextSibling = { + name: 'b', + tester: null, + patternSource: null, + ownerRouteID: 0, + next: createSegmentNode(), + nextSibling: null, + }; + applyUndo({ k: UndoKind.ParamSiblingAdd, prev }); + expect(prev.nextSibling).toBeNull(); + }); + + it('WildcardSet clears all three wildcard slots on the node', () => { + const n = createSegmentNode(); + n.wildcardStore = 5; + n.wildcardName = 'rest'; + n.wildcardOrigin = WildcardOrigin.Star; + applyUndo({ k: UndoKind.WildcardSet, n }); + expect(n.wildcardStore).toBeNull(); + expect(n.wildcardName).toBeNull(); + expect(n.wildcardOrigin).toBeNull(); + }); + + it('StoreSet clears the store slot', () => { + const n = createSegmentNode(); + n.store = 7; + applyUndo({ k: UndoKind.StoreSet, n }); + expect(n.store).toBeNull(); + }); + + it('TesterAdd deletes the tester cache entry under the supplied key', () => { + const cache = new Map(); + cache.set('\\d+', (() => 1) as PatternTesterFn); + applyUndo({ k: UndoKind.TesterAdd, cache, key: '\\d+' }); + expect(cache.size).toBe(0); + }); + + it('SingleChildClear clears the inline single-static-child slot', () => { + const n = createSegmentNode(); + n.singleChildKey = 'users'; + n.singleChildNext = createSegmentNode(); + applyUndo({ k: UndoKind.SingleChildClear, n }); + expect(n.singleChildKey).toBeNull(); + expect(n.singleChildNext).toBeNull(); + }); + + it('SingleChildRestore re-sets the inline slot to the recorded key + next', () => { + const n = createSegmentNode(); + const next = createSegmentNode(); + applyUndo({ k: UndoKind.SingleChildRestore, n, key: 'users', next }); + expect(n.singleChildKey).toBe('users'); + expect(n.singleChildNext).toBe(next); + }); +}); + +describe('applyUndo — array truncation entries', () => { + it('TerminalArraysTruncate truncates four parallel arrays to a recorded length', () => { + const t = [1, 2, 3, 4]; + const w = [false, true, false, true]; + const f: Array = [{}, {}, {}, {}]; + const b = [0, 0b1, 0b10, 0b11]; + applyUndo({ k: UndoKind.TerminalArraysTruncate, t, w, f, b, len: 2 }); + expect(t).toEqual([1, 2]); + expect(w).toEqual([false, true]); + expect(f.length).toBe(2); + expect(b).toEqual([0, 0b1]); + }); + + it('HandlersTruncate truncates the array to the recorded length', () => { + const arr: unknown[] = [1, 2, 3, 4, 5]; + applyUndo({ k: UndoKind.HandlersTruncate, arr, len: 3 }); + expect(arr).toEqual([1, 2, 3]); + }); +}); + +describe('applyUndo — slot delete / reset entries', () => { + it('SegmentTreeReset removes the entry at the recorded methodCode', () => { + const trees: Array | null | undefined> = []; + trees[3] = createSegmentNode(); + applyUndo({ k: UndoKind.SegmentTreeReset, trees, mc: 3 }); + expect(trees[3]).toBeUndefined(); + }); + + it('StaticBucketReset removes the bucket at the recorded methodCode', () => { + const buckets: Array | undefined> = []; + buckets[1] = { '/x': 'a' }; + applyUndo({ k: UndoKind.StaticBucketReset, buckets, mc: 1 }); + expect(buckets[1]).toBeUndefined(); + }); + + it('StaticMapDelete removes the recorded key from the supplied map', () => { + const map: Record = { '/x': 'a' }; + applyUndo({ k: UndoKind.StaticMapDelete, map, key: '/x' }); + expect('/x' in map).toBe(false); + }); +}); + +describe('applyUndo — StaticPathMaskRestore', () => { + it('deletes the key when prevMask is 0', () => { + const map: Record = { '/x': 0b101 }; + applyUndo({ k: UndoKind.StaticPathMaskRestore, map, key: '/x', prevMask: 0 }); + expect('/x' in map).toBe(false); + }); + + it('writes prevMask back to the key when non-zero', () => { + const map: Record = { '/x': 0b111 }; + applyUndo({ k: UndoKind.StaticPathMaskRestore, map, key: '/x', prevMask: 0b011 }); + expect(map['/x']).toBe(0b011); + }); +}); + +describe('applyUndo — PrefixIndexPlan', () => { + it('invokes the rollback dispatcher with the recorded plan', () => { + let called: unknown = null; + const rollback = (plan: unknown) => { + called = plan; + }; + const plan = { ops: ['x'] }; + applyUndo({ k: UndoKind.PrefixIndexPlan, rollback, plan }); + expect(called).toBe(plan); + }); +}); + +describe('typed push helpers', () => { + it('pushStaticBucketResetUndo widens the bucket array via a single cast', () => { + const undoLog: SegmentTreeUndoLog = []; + const buckets: Array | undefined> = []; + buckets[2] = { '/a': 1 }; + pushStaticBucketResetUndo(undoLog, buckets, 2); + expect(undoLog.length).toBe(1); + expect(undoLog[0]!.k).toBe(UndoKind.StaticBucketReset); + applyUndo(undoLog[0]!); + expect(buckets[2]).toBeUndefined(); + }); + + it('pushStaticMapDeleteUndo widens the map via a single cast', () => { + const undoLog: SegmentTreeUndoLog = []; + const map: Record = { '/x': 7 }; + pushStaticMapDeleteUndo(undoLog, map, '/x'); + expect(undoLog.length).toBe(1); + expect(undoLog[0]!.k).toBe(UndoKind.StaticMapDelete); + applyUndo(undoLog[0]!); + expect('/x' in map).toBe(false); + }); +}); diff --git a/packages/router/src/tree/undo.ts b/packages/router/src/tree/undo.ts new file mode 100644 index 0000000..9183206 --- /dev/null +++ b/packages/router/src/tree/undo.ts @@ -0,0 +1,128 @@ +import type { ParamSegment, SegmentNode } from './node-types'; +import type { PatternTesterFn } from './pattern-tester'; + +export enum UndoKind { + StaticChildrenInit, + StaticChildAdd, + ParamChildSet, + ParamSiblingAdd, + WildcardSet, + StoreSet, + TesterAdd, + PrefixIndexPlan, + TerminalArraysTruncate, + HandlersTruncate, + SegmentTreeReset, + StaticBucketReset, + StaticMapDelete, + SingleChildClear, + SingleChildRestore, + StaticPathMaskRestore, +} + +export type UndoRecord = + | { k: UndoKind.StaticChildrenInit; n: SegmentNode } + | { k: UndoKind.StaticChildAdd; p: Record; key: string } + | { k: UndoKind.ParamChildSet; n: SegmentNode } + | { k: UndoKind.ParamSiblingAdd; prev: ParamSegment } + | { k: UndoKind.WildcardSet; n: SegmentNode } + | { k: UndoKind.StoreSet; n: SegmentNode } + | { k: UndoKind.TesterAdd; cache: Map; key: string } + | { k: UndoKind.PrefixIndexPlan; rollback: (plan: unknown) => void; plan: unknown } + | { k: UndoKind.TerminalArraysTruncate; t: number[]; w: boolean[]; f: Array; b: number[]; len: number } + | { k: UndoKind.HandlersTruncate; arr: unknown[]; len: number } + | { k: UndoKind.SegmentTreeReset; trees: Array; mc: number } + | { k: UndoKind.StaticBucketReset; buckets: Array | undefined>; mc: number } + | { k: UndoKind.StaticMapDelete; map: Record; key: string } + | { k: UndoKind.SingleChildClear; n: SegmentNode } + | { k: UndoKind.SingleChildRestore; n: SegmentNode; key: string; next: SegmentNode } + | { k: UndoKind.StaticPathMaskRestore; map: Record; key: string; prevMask: number }; + +export type SegmentTreeUndoLog = UndoRecord[]; + +export function pushStaticBucketResetUndo( + undoLog: SegmentTreeUndoLog, + buckets: Array | undefined>, + mc: number, +): void { + undoLog.push({ + k: UndoKind.StaticBucketReset, + buckets: buckets as unknown as Array | undefined>, + mc, + }); +} + +export function pushStaticMapDeleteUndo(undoLog: SegmentTreeUndoLog, map: Record, key: string): void { + undoLog.push({ + k: UndoKind.StaticMapDelete, + map: map as unknown as Record, + key, + }); +} + +export function applyUndo(entry: UndoRecord): void { + switch (entry.k) { + case UndoKind.StaticChildrenInit: + entry.n.staticChildren = null; + return; + case UndoKind.StaticChildAdd: + delete entry.p[entry.key]; + return; + case UndoKind.ParamChildSet: + entry.n.paramChild = null; + return; + case UndoKind.ParamSiblingAdd: + entry.prev.nextSibling = null; + return; + case UndoKind.WildcardSet: + entry.n.wildcardStore = null; + entry.n.wildcardName = null; + entry.n.wildcardOrigin = null; + return; + case UndoKind.StoreSet: + entry.n.store = null; + return; + case UndoKind.TesterAdd: + entry.cache.delete(entry.key); + return; + case UndoKind.PrefixIndexPlan: + entry.rollback(entry.plan); + return; + case UndoKind.TerminalArraysTruncate: + entry.t.length = entry.len; + entry.w.length = entry.len; + entry.f.length = entry.len; + entry.b.length = entry.len; + return; + case UndoKind.HandlersTruncate: + entry.arr.length = entry.len; + return; + case UndoKind.SegmentTreeReset: + delete entry.trees[entry.mc]; + return; + case UndoKind.StaticBucketReset: + delete entry.buckets[entry.mc]; + return; + case UndoKind.StaticMapDelete: + delete entry.map[entry.key]; + return; + case UndoKind.SingleChildClear: + entry.n.singleChildKey = null; + entry.n.singleChildNext = null; + return; + case UndoKind.SingleChildRestore: + entry.n.singleChildKey = entry.key; + entry.n.singleChildNext = entry.next; + return; + case UndoKind.StaticPathMaskRestore: + if (entry.prevMask === 0) { + delete entry.map[entry.key]; + } else { + entry.map[entry.key] = entry.prevMask; + } + return; + default: { + const _exhaustive: never = entry; + } + } +} diff --git a/packages/router/src/types.ts b/packages/router/src/types.ts index 3dbbcc1..e95d665 100644 --- a/packages/router/src/types.ts +++ b/packages/router/src/types.ts @@ -1,113 +1,209 @@ -import type { HttpMethod } from '@zipbul/shared'; +/** + * How a successful {@link MatchOutput} was resolved. Surfaced via + * {@link MatchMeta.source} so the caller can reason about object + * identity and cache semantics. + */ +export enum MatchSource { + /** + * Literal-path route (no params). The returned {@link MatchOutput} + * is shared across calls and frozen — do not mutate. `===` identity + * holds across identical hits. + */ + Static = 'static', + /** + * Dynamic match served from the per-method hit cache. The cached + * `params` object is frozen and reused across hits — do not mutate, + * and do not rely on per-call identity. + */ + Cache = 'cache', + /** + * First-time resolution for a dynamic route. Each call returns a + * fresh {@link MatchOutput} with its own `params` object. + */ + Dynamic = 'dynamic', +} +/** + * Discriminant for {@link RouterErrorData}. One value per failure mode + * the router can throw: 1 state-transition kind, 18 registration / + * validation kinds, and 2 options / batch kinds. There are no + * match-time kinds because `match()` does not throw `RouterError` — + * it returns `null` on misses. A built-in `URIError` from + * `decodeURIComponent` may still propagate on a captured `:param` + * slot that contains malformed percent-encoding. + */ +export enum RouterErrorKind { + /** `add()` / `addAll()` called after `build()`. */ + RouterSealed = 'router-sealed', + /** Two routes register the same `(method, normalized-path)` pair. */ + RouteDuplicate = 'route-duplicate', + /** Two routes collide at the same tree position with different shapes. */ + RouteConflict = 'route-conflict', + /** A route is shadowed and can never be reached at match time. */ + RouteUnreachable = 'route-unreachable', + /** Path or inline regex body failed to parse. */ + RouteParse = 'route-parse', + /** Same `:name` appears twice in one route path. */ + ParamDuplicate = 'param-duplicate', + /** More than 32 distinct HTTP methods registered. */ + MethodLimit = 'method-limit', + /** Method string is empty. */ + MethodEmpty = 'method-empty', + /** Method contains characters outside the RFC 7230 `token` grammar. */ + MethodInvalidToken = 'method-invalid-token', + /** Path does not start with `/`. */ + PathMissingLeadingSlash = 'path-missing-leading-slash', + /** Path contains `?` (query is the boundary's responsibility, not the router's). */ + PathQuery = 'path-query', + /** Path contains `#` (fragment is client-side). */ + PathFragment = 'path-fragment', + /** Path contains an ASCII control character. */ + PathControlChar = 'path-control-char', + /** Path segment contains a character outside the RFC 3986 `pchar` set. */ + PathInvalidPchar = 'path-invalid-pchar', + /** Path contains a malformed `%xx` percent-encoding. */ + PathMalformedPercent = 'path-malformed-percent', + /** Path's percent-encoded bytes are not valid UTF-8. */ + PathInvalidUtf8 = 'path-invalid-utf8', + /** Path contains `%2F` / `%2f` (encoded slash inside a segment). */ + PathEncodedSlash = 'path-encoded-slash', + /** Path contains a `.` or `..` segment. */ + PathDotSegment = 'path-dot-segment', + /** Path contains an empty segment (`//`), excluding the leading slash. */ + PathEmptySegment = 'path-empty-segment', + /** A {@link RouterOptions} value was invalid (e.g. negative `cacheSize`). */ + RouterOptionsInvalid = 'router-options-invalid', + /** `build()` aggregated multiple per-route failures; see `.errors`. */ + RouteValidation = 'route-validation', +} + +/** Options accepted by the `Router` constructor. All optional. */ export interface RouterOptions { + /** + * Trailing-slash policy. Default `true` — collapses one trailing + * slash on registration and at match time, so `/a` and `/a/` resolve + * to the same route. Set `false` for strict matching where `/a` and + * `/a/` are distinct. + */ ignoreTrailingSlash?: boolean; - caseSensitive?: boolean; - decodeParams?: boolean; - enableCache?: boolean; + /** + * Path case-sensitivity. Default `true` — `/Users` and `/users` + * are different routes. Set `false` to lowercase both registered + * paths and incoming match inputs before comparison. + */ + pathCaseSensitive?: boolean; + /** + * Per-method hit-cache capacity. Default `1000`. Rounded up to the + * next power of two; bounded approximate-LRU eviction. Must be a + * positive integer in `[1, 2^30]`. Empty routers allocate no cache + * memory; caches are lazy per active method. + */ cacheSize?: number; - maxSegmentLength?: number; - optionalParamBehavior?: OptionalParamBehavior; - regexSafety?: RegexSafetyOptions; - regexAnchorPolicy?: 'warn' | 'error' | 'silent'; - onWarn?: (warning: RouterWarning) => void; - /** 경로 최대 길이. 기본값 2048. 초과 시 match()에서 즉시 throw RouterError 반환. */ - maxPathLength?: number; + /** + * Shape of `params` when an optional `:name?` segment is missing. + * Default `true` — the key is omitted from `params`. Set `false` to + * write `params[name] = undefined` instead. + */ + omitMissingOptional?: boolean; } -export type OptionalParamBehavior = 'omit' | 'setUndefined' | 'setEmptyString'; - -export interface RegexSafetyOptions { - mode?: 'error' | 'warn'; - maxLength?: number; - forbidBacktrackingTokens?: boolean; - forbidBackreferences?: boolean; - maxExecutionMs?: number; - validator?: (pattern: string) => void; -} - - -export type PatternTesterFn = (value: string) => boolean; - +/** Captured path parameters keyed by name. Decoded `string` values. */ export type RouteParams = Record; -// ── Error types ── - /** - * 라우터 에러 종류 (discriminant). - * 총 14개 — 상태 전이 2, 빌드타임 8, 매치타임 4. + * One failing route inside a {@link RouterErrorKind.RouteValidation} + * aggregate. `index` is the position in the original `addAll()` batch + * (or `add()` call sequence). */ -export type RouterErrKind = - // 상태 전이 - | 'router-sealed' // build() 후 add() 시도 - | 'not-built' // build() 전 match() 시도 - // 빌드타임 — 등록 - | 'route-duplicate' // 동일 method+path 이미 존재 - | 'route-conflict' // wildcard/param/static 구조적 충돌 - | 'route-parse' // 패턴 문법 오류 - | 'param-duplicate' // 같은 경로 내 동일 이름 파라미터 - | 'regex-unsafe' // regex safety 검사 실패 - | 'regex-anchor' // anchor policy=error 시 ^/$ 포함 - | 'method-limit' // 32개 메서드 초과 (MethodRegistry) - // 매치타임 - | 'segment-limit' // maxSegmentLength 초과 - | 'regex-timeout' // 패턴 매칭 시간 초과 - | 'path-too-long' // maxPathLength 초과 - | 'method-not-found'; // 한 번도 등록되지 않은 메서드로 match() 시도 +export interface RouteValidationIssue { + index: number; + method: string; + path: string; + error: RouterErrorData; +} /** - * Result 에러에 첨부되는 데이터. - * `err({ kind, message, ... })` 형태로 사용. + * Structured payload carried by `RouterError.data`. Discriminated union + * over {@link RouterErrorKind} — narrow on `kind` to access + * kind-specific fields. `path`, `method`, and `registeredCount` are + * context fields the router attaches on a best-effort basis and are + * optional on every variant. */ -export interface RouterErrData { - /** 에러 종류 (discriminant) */ - kind: RouterErrKind; - /** 사람이 읽을 수 있는 상세 설명 */ - message: string; - /** 문제가 된 전체 경로 (등록 시점 또는 매치 시점) */ +export type RouterErrorData = { path?: string; - /** 문제가 된 HTTP 메서드 */ method?: string; - /** 문제가 된 개별 세그먼트 */ - segment?: string; - /** 충돌 대상 (기존에 등록된 라우트 등) */ - conflictsWith?: string; - /** 수정 제안 (가능한 경우) */ - suggestion?: string; - /** addAll() fail-fast 시 에러 전까지 성공한 등록 수 */ registeredCount?: number; -} +} & ( + | { kind: RouterErrorKind.RouterSealed; message: string; suggestion: string } + | { kind: RouterErrorKind.RouterOptionsInvalid; message: string; suggestion: string } + | { kind: RouterErrorKind.RouteValidation; message: string; errors: RouteValidationIssue[] } + | { kind: RouterErrorKind.RouteDuplicate; message: string; suggestion: string } + | { kind: RouterErrorKind.RouteConflict; message: string; segment: string; conflictsWith: string; suggestion: string } + | { kind: RouterErrorKind.RouteUnreachable; message: string; segment: string; conflictsWith: string; suggestion: string } + | { kind: RouterErrorKind.RouteParse; message: string; segment?: string; suggestion: string } + | { kind: RouterErrorKind.ParamDuplicate; message: string; segment: string; suggestion: string } + | { kind: RouterErrorKind.PathQuery; message: string; suggestion: string } + | { kind: RouterErrorKind.PathFragment; message: string; suggestion: string } + | { kind: RouterErrorKind.PathEncodedSlash; message: string; suggestion: string } + | { kind: RouterErrorKind.PathDotSegment; message: string; suggestion: string } + | { kind: RouterErrorKind.PathEmptySegment; message: string; suggestion: string } + | { kind: RouterErrorKind.MethodLimit; message: string; method: string; suggestion: string } + | { kind: RouterErrorKind.MethodEmpty; message: string; suggestion: string } + | { kind: RouterErrorKind.MethodInvalidToken; message: string; method: string; suggestion: string } + | { kind: RouterErrorKind.PathMissingLeadingSlash; message: string; suggestion: string } + | { kind: RouterErrorKind.PathMalformedPercent; message: string; suggestion: string } + | { kind: RouterErrorKind.PathInvalidPchar; message: string; segment: string; suggestion: string } + | { kind: RouterErrorKind.PathControlChar; message: string; suggestion: string } + | { kind: RouterErrorKind.PathInvalidUtf8; message: string; suggestion: string } +); /** - * 라이브러리가 발행하는 경고 정보. - * RouterOptions.onWarn 콜백으로 수신한다. + * Structural surface of a built router. `Router` implements this + * interface, and the type is exported so consumers can hold a router + * reference without nailing down the concrete class. */ -export interface RouterWarning { - kind: 'regex-unsafe' | 'regex-anchor'; - message: string; - segment?: string; +export interface RouterPublicApi { + /** See `Router.add`. */ + add(method: string | readonly string[], path: string, value: T): void; + /** See `Router.addAll`. */ + addAll(entries: ReadonlyArray): void; + /** See `Router.build`. */ + build(): RouterPublicApi; + /** See `Router.match`. */ + match(method: string, path: string): MatchOutput | null; + /** See `Router.allowedMethods`. */ + allowedMethods(path: string): readonly string[]; } -// ── Match output types ── - -/** - * 매칭 메타 정보. - * 디버깅/모니터링 용도로 매칭 소스를 알려준다. - */ +/** Metadata attached to every {@link MatchOutput}. */ export interface MatchMeta { - readonly source: 'static' | 'cache' | 'dynamic'; + /** How the match was resolved; see {@link MatchSource}. */ + readonly source: MatchSource; } -/** - * match() 성공 시 반환되는 결과. - * add() 시 등록한 값(T)과 파라미터, 메타 정보를 포함한다. - */ +/** Successful match result returned by {@link RouterPublicApi.match}. */ export interface MatchOutput { - /** add() 시 등록한 값 그대로 */ + /** Value the matched route was registered with. */ value: T; - /** 추출된 경로 파라미터 */ - params: Record; - /** 매칭 메타 정보 */ + /** + * Captured path parameters. Param values are percent-decoded; + * wildcard captures are returned raw (slash-preserving). The object + * has a `null` prototype. + * + * For {@link MatchSource.Static} and {@link MatchSource.Cache} + * results, this object is frozen and shared across calls — do not + * mutate. + */ + params: RouteParams; + /** How the match was resolved; see {@link MatchMeta}. */ meta: MatchMeta; } +export interface MatchState { + handlerIndex: number; + paramCount: number; + paramOffsets: Int32Array; +} + +export type MatchFn = (url: string, state: MatchState) => boolean; +export type DecoderFn = (raw: string) => string; diff --git a/packages/router/stryker.config.json b/packages/router/stryker.config.json new file mode 100644 index 0000000..1651c15 --- /dev/null +++ b/packages/router/stryker.config.json @@ -0,0 +1,24 @@ +{ + "$schema": "./node_modules/@stryker-mutator/core/schema/stryker-schema.json", + "testRunner": "command", + "commandRunner": { + "command": "bun --config=bunfig.mutation.toml test --path-ignore-patterns='**/memory-bounds.test.ts'" + }, + "coverageAnalysis": "off", + "inPlace": true, + "incremental": true, + "concurrency": 8, + "timeoutMS": 60000, + "mutate": [ + "src/cache.ts", + "src/tree/**/*.ts", + "src/builder/path-parser.ts", + "src/builder/route-expand.ts", + "src/builder/method-policy.ts", + "src/builder/pattern-utils.ts", + "src/builder/path-policy.ts", + "!src/**/*.spec.ts", + "!src/**/test-fixtures.ts" + ], + "reporters": ["clear-text", "progress", "html"] +} diff --git a/packages/router/test/e2e/allowed-methods.test.ts b/packages/router/test/e2e/allowed-methods.test.ts new file mode 100644 index 0000000..5b60ce3 --- /dev/null +++ b/packages/router/test/e2e/allowed-methods.test.ts @@ -0,0 +1,154 @@ +import { describe, it, expect } from 'bun:test'; + +import { Router } from '../../src/router'; + +function classify(r: Router, method: string, path: string): '200' | '405' | '404' { + const out = r.match(method, path); + + if (out !== null) { + return '200'; + } + + const allowed = r.allowedMethods(path); + + if (allowed.length === 0) { + return '404'; + } + + return '405'; +} + +describe('allowedMethods', () => { + it('returns empty for completely unknown paths (404 territory)', () => { + const r = new Router(); + r.add('GET', '/users/:id', 1); + r.build(); + + expect(r.allowedMethods('/nonexistent')).toEqual([]); + }); + + it('returns registered methods for a path that matches under others (405 territory)', () => { + const r = new Router(); + r.add('GET', '/users/:id', 1); + r.add('POST', '/users/:id', 2); + r.add('DELETE', '/users/:id', 3); + r.build(); + + const allowed = r.allowedMethods('/users/42'); + + expect([...allowed].sort()).toEqual(['DELETE', 'GET', 'POST']); + }); + + it('returns the matching method even when called for the same path that match() succeeded for', () => { + const r = new Router(); + r.add('GET', '/x', 1); + r.build(); + + expect(r.match('GET', '/x')).not.toBeNull(); + expect(r.allowedMethods('/x')).toEqual(['GET']); + }); + + it('honors trailing-slash normalization (default ignoreTrailingSlash=true)', () => { + const r = new Router(); + r.add('GET', '/users', 1); + r.build(); + + expect(r.allowedMethods('/users/')).toEqual(['GET']); + expect(r.allowedMethods('/users')).toEqual(['GET']); + }); + + it('strict trailing-slash with ignoreTrailingSlash=false', () => { + const r = new Router({ ignoreTrailingSlash: false }); + r.add('GET', '/users', 1); + r.build(); + + expect(r.allowedMethods('/users')).toEqual(['GET']); + expect(r.allowedMethods('/users/')).toEqual([]); + }); + + it('does not strip query string — raw `?...` is captured into an unconstrained :param value', () => { + const r = new Router(); + r.add('GET', '/users/:id', 1); + r.build(); + + expect(r.allowedMethods('/users/42?token=abc')).toEqual(['GET']); + }); + + it('regex-constrained :param rejects raw query string in the slot', () => { + const r = new Router(); + r.add('GET', '/users/:id(\\d+)', 1); + r.build(); + + expect(r.allowedMethods('/users/42?token=abc')).toEqual([]); + }); + + it('case-insensitive matching with caseSensitive=false', () => { + const r = new Router({ pathCaseSensitive: false }); + r.add('GET', '/Users', 1); + r.add('POST', '/Users', 2); + r.build(); + + expect([...r.allowedMethods('/USERS')].sort()).toEqual(['GET', 'POST']); + }); + + it('mixes static and dynamic — both report correctly', () => { + const r = new Router(); + r.add('GET', '/static', 1); + r.add('POST', '/users/:id', 2); + r.build(); + + expect(r.allowedMethods('/static')).toEqual(['GET']); + expect(r.allowedMethods('/users/42')).toEqual(['POST']); + expect(r.allowedMethods('/missing')).toEqual([]); + }); + + it('returns empty before build()', () => { + const r = new Router(); + r.add('GET', '/x', 1); + + expect(r.allowedMethods('/x')).toEqual([]); + }); + + it('does not pollute matchState observable to subsequent match() calls', () => { + const r = new Router(); + r.add('GET', '/users/:id', 1); + r.add('POST', '/users/:id', 2); + r.build(); + + r.allowedMethods('/users/42'); + + const m = r.match('GET', '/users/99')!; + + expect(m.value).toBe(1); + expect(m.params.id).toBe('99'); + }); + + it('handles wildcard routes', () => { + const r = new Router(); + r.add('GET', '/files/*p', 1); + r.add('PUT', '/files/*p', 2); + r.build(); + + expect([...r.allowedMethods('/files/dir/file.txt')].sort()).toEqual(['GET', 'PUT']); + expect(r.allowedMethods('/files')).toEqual(['GET', 'PUT'].sort()); + }); + + it('handles optional-param expansion paths', () => { + const r = new Router(); + r.add('GET', '/users/:id?', 1); + r.build(); + + expect(r.allowedMethods('/users')).toEqual(['GET']); + expect(r.allowedMethods('/users/42')).toEqual(['GET']); + }); + + it('adapter pattern: 404 vs 405 disambiguation', () => { + const r = new Router(); + r.add('GET', '/api/users/:id', 1); + r.build(); + + expect(classify(r, 'GET', '/api/users/42')).toBe('200'); + expect(classify(r, 'POST', '/api/users/42')).toBe('405'); + expect(classify(r, 'GET', '/nonexistent')).toBe('404'); + }); +}); diff --git a/packages/router/test/e2e/api-guarantees.test.ts b/packages/router/test/e2e/api-guarantees.test.ts new file mode 100644 index 0000000..12b0271 --- /dev/null +++ b/packages/router/test/e2e/api-guarantees.test.ts @@ -0,0 +1,458 @@ +import { describe, expect, it } from 'bun:test'; + +import { getRouterInternals } from '../../internal'; +import { RouterError } from '../../src/error'; +import { Router } from '../../src/router'; +import { MatchSource } from '../../src/types'; + +describe('API guarantees', () => { + it('returns null when match() is called before build()', () => { + const r = new Router(); + r.add('GET', '/x', 'x'); + + expect(r.match('GET', '/x')).toBeNull(); + }); + + it('preserves handler value identity (===)', () => { + const handler = { run: () => 1 }; + const r = new Router(); + r.add('GET', '/x', handler); + r.build(); + + expect(r.match('GET', '/x')!.value).toBe(handler); + }); + + it('returns a fresh MatchOutput on each dynamic call (no aliasing)', () => { + const r = new Router(); + r.add('GET', '/users/:id', 'u'); + r.build(); + + const a = r.match('GET', '/users/1')!; + const b = r.match('GET', '/users/2')!; + + expect(a).not.toBe(b); + expect(a.params).not.toBe(b.params); + expect(a.params).toEqual({ id: '1' }); + expect(b.params).toEqual({ id: '2' }); + }); + + it('static-route MatchOutput is shared and frozen across identical hits', () => { + const r = new Router(); + r.add('GET', '/health', 'ok'); + r.build(); + + const a = r.match('GET', '/health')!; + const b = r.match('GET', '/health')!; + + expect(a.value).toBe(b.value); + expect(a).toBe(b); + expect(Object.isFrozen(a)).toBe(true); + expect(a.meta.source).toBe(MatchSource.Static); + expect(b.meta.source).toBe(MatchSource.Static); + }); + + it('static MatchOutput.params is frozen empty (no key writes possible)', () => { + const r = new Router(); + r.add('GET', '/health', 'ok'); + r.build(); + + const m = r.match('GET', '/health')!; + + expect(Object.keys(m.params)).toHaveLength(0); + expect(Object.isFrozen(m.params)).toBe(true); + }); + + it('params object is prototype-less (no inherited keys)', () => { + const r = new Router(); + r.add('GET', '/users/:id', 'u'); + r.build(); + + const m = r.match('GET', '/users/42')!; + + expect((m.params as Record).toString).toBeUndefined(); + expect((m.params as Record).hasOwnProperty).toBeUndefined(); + expect('toString' in m.params).toBe(false); + }); + + it('successive matches do not bleed params between routes', () => { + const r = new Router(); + r.add('GET', '/users/:id', 'u'); + r.add('GET', '/posts/:slug', 'p'); + r.build(); + + const a = r.match('GET', '/users/42')!; + + const b = r.match('GET', '/posts/hello')!; + + expect(b.params).toEqual({ slug: 'hello' }); + expect((b.params as Record).id).toBeUndefined(); + expect(a.params).toEqual({ id: '42' }); + }); + + it('reports meta.source = "dynamic" for tree matches and "static" for staticMap matches', () => { + const r = new Router(); + r.add('GET', '/health', 's'); + r.add('GET', '/users/:id', 'd'); + r.build(); + + expect(r.match('GET', '/health')!.meta.source).toBe(MatchSource.Static); + expect(r.match('GET', '/health')!.meta.source).toBe(MatchSource.Static); + expect(r.match('GET', '/users/1')!.meta.source).toBe(MatchSource.Dynamic); + }); + + it('reports meta.source = "cache" for cached hits', () => { + const r = new Router({}); + r.add('GET', '/users/:id', 'd'); + r.build(); + + r.match('GET', '/users/1'); + const m = r.match('GET', '/users/1')!; + + expect(m.meta.source).toBe(MatchSource.Cache); + }); + + it('cache returns frozen params; caller mutation throws and cache is preserved', () => { + const r = new Router({}); + r.add('GET', '/users/:id', 'd'); + r.build(); + + const a = r.match('GET', '/users/1')!; + expect(Object.isFrozen(a.params)).toBe(true); + expect(() => { + 'use strict'; + (a.params as Record).id = 'mutated'; + }).toThrow(TypeError); + + const b = r.match('GET', '/users/1')!; + expect(b.params.id).toBe('1'); + }); +}); + +describe('optional params', () => { + it('omit: missing optional disappears from params object', () => { + const r = new Router({ omitMissingOptional: true }); + r.add('GET', '/users/:id?', 'u'); + r.build(); + + const withParam = r.match('GET', '/users/42')!; + + expect(withParam.params).toEqual({ id: '42' }); + + const withoutParam = r.match('GET', '/users')!; + + expect('id' in withoutParam.params).toBe(false); + }); + + it('set-undefined: missing optional becomes undefined', () => { + const r = new Router({ omitMissingOptional: false }); + r.add('GET', '/users/:id?', 'u'); + r.build(); + + const m = r.match('GET', '/users')!; + + expect('id' in m.params).toBe(true); + expect(m.params.id).toBeUndefined(); + }); +}); + +describe('method specs', () => { + it('method "*" registers across all standard methods', () => { + const r = new Router(); + r.add('*', '/anything', 'all'); + r.build(); + + for (const method of ['GET', 'POST', 'PUT', 'PATCH', 'DELETE', 'OPTIONS', 'HEAD'] as const) { + expect(r.match(method, '/anything')!.value).toBe('all'); + } + }); + + it('method array registers across the listed methods only', () => { + const r = new Router(); + r.add(['GET', 'POST'], '/x', 'some'); + r.build(); + + expect(r.match('GET', '/x')!.value).toBe('some'); + expect(r.match('POST', '/x')!.value).toBe('some'); + expect(r.match('DELETE', '/x')).toBeNull(); + }); + + it('addAll registers all entries atomically when valid', () => { + const r = new Router(); + r.addAll([ + ['GET', '/a', 'a'], + ['POST', '/b', 'b'], + ['DELETE', '/c', 'c'], + ]); + r.build(); + + expect(r.match('GET', '/a')!.value).toBe('a'); + expect(r.match('POST', '/b')!.value).toBe('b'); + expect(r.match('DELETE', '/c')!.value).toBe('c'); + }); + + it('addAll defers duplicate validation to build()', () => { + const r = new Router(); + + r.addAll([ + ['GET', '/ok', '1'], + ['GET', '/ok', '2'], + ]); + + expect(() => r.build()).toThrow(RouterError); + }); +}); + +describe('sealed state', () => { + it('throws router-sealed when add() is called after build()', () => { + const r = new Router(); + r.add('GET', '/x', 'x'); + r.build(); + + expect(() => r.add('GET', '/y', 'y')).toThrow(RouterError); + }); + + it('throws router-sealed when addAll() is called after build()', () => { + const r = new Router(); + r.add('GET', '/x', 'x'); + r.build(); + + expect(() => r.addAll([['GET', '/y', 'y']])).toThrow(RouterError); + }); + + it('build() is idempotent — calling twice is safe', () => { + const r = new Router(); + r.add('GET', '/x', 'x'); + r.build(); + r.build(); + + expect(r.match('GET', '/x')!.value).toBe('x'); + }); + + it('freezes build-only tables so post-build mutation throws (F22)', () => { + const r = new Router(); + r.add('GET', '/x', 'x'); + r.build(); + + const internal = getRouterInternals(r); + const snapshot = ( + internal.registration as unknown as { + snapshot: { segmentTrees: unknown[]; handlers: unknown[] }; + } + ).snapshot; + const matchLayer = internal.matchLayer as unknown as { + activeMethodCodes: ReadonlyArray; + trees: unknown[]; + }; + + expect(Object.isFrozen(snapshot.segmentTrees)).toBe(true); + expect(Object.isFrozen(matchLayer.activeMethodCodes)).toBe(true); + + expect(Object.isFrozen(snapshot.handlers)).toBe(false); + expect(Object.isFrozen(matchLayer.trees)).toBe(false); + + expect(() => (snapshot.segmentTrees as unknown[]).push(null)).toThrow(TypeError); + }); +}); + +describe('optional-param expansion with stable paramName', () => { + function makeOptionalRouter() { + const r = new Router(); + r.add('GET', '/users/:id?', 'opt'); + r.build(); + + return r; + } + + it('builds a single segment tree', () => { + const r = makeOptionalRouter(); + const trees = (getRouterInternals(r) as unknown as { matchLayer: { trees: Array } }).matchLayer.trees; + const built = trees.filter(t => t != null); + + expect(built.length).toBe(1); + }); + + it('matches each expansion variant correctly', () => { + const r = makeOptionalRouter(); + + expect(r.match('GET', '/users')!.value).toBe('opt'); + expect(r.match('GET', '/users/x')!.params).toEqual({ id: 'x' }); + }); + + it('returns null for paths with too many segments', () => { + const r = makeOptionalRouter(); + + expect(r.match('GET', '/users/x/y')).toBeNull(); + }); +}); + +describe('optional expansion combined with deep param routes', () => { + function makeHugeOptionalRouter() { + const r = new Router(); + + r.add('GET', '/users/:id?', 'opt'); + + for (let i = 0; i < 200; i++) { + r.add('GET', `/zone${i}/category${i}/:name${i}/sub`, `r${i}`); + } + + r.build(); + + return r; + } + + it('matches optional-expansion variants correctly', () => { + const r = makeHugeOptionalRouter(); + + expect(r.match('GET', '/users')!.value).toBe('opt'); + expect(r.match('GET', '/users/x')!.value).toBe('opt'); + }); + + it('matches deep param routes correctly', () => { + const r = makeHugeOptionalRouter(); + const m = r.match('GET', '/zone5/category5/foo/sub')!; + + expect(m.value).toBe('r5'); + expect(m.params).toEqual({ name5: 'foo' }); + }); + + it('returns null for unmatched URLs', () => { + const r = makeHugeOptionalRouter(); + + expect(r.match('GET', '/unrelated/path')).toBeNull(); + expect(r.match('GET', '/zone5/category5/foo/wrong')).toBeNull(); + }); + + it('does not throw on empty/malformed URLs', () => { + const r = makeHugeOptionalRouter(); + + expect(() => r.match('GET', '')).not.toThrow(); + expect(() => r.match('GET', '/')).not.toThrow(); + expect(() => r.match('GET', '?')).not.toThrow(); + }); +}); + +describe('edge case URLs', () => { + it('passes raw unicode in param values through to the matcher', () => { + const r = new Router(); + r.add('GET', '/users/:name', 'u'); + r.build(); + + const m = r.match('GET', '/users/한글'); + + expect(m).not.toBeNull(); + expect(m!.params.name).toBe('한글'); + }); + + it('handles percent-encoded multi-byte sequences', () => { + const r = new Router(); + r.add('GET', '/users/:name', 'u'); + r.build(); + + const m = r.match('GET', '/users/%ED%95%9C%EA%B8%80'); + + expect(m).not.toBeNull(); + expect(m!.params.name).toBe('한글'); + }); + + it('rejects empty path', () => { + const r = new Router(); + r.add('GET', '/users/:id', 'u'); + r.build(); + + expect(r.match('GET', '')).toBeNull(); + }); + + it('rejects path with only "?"', () => { + const r = new Router(); + r.add('GET', '/users/:id', 'u'); + r.build(); + + expect(r.match('GET', '?')).toBeNull(); + }); + + it('does not match path containing query string (framework strips ?)', () => { + const r = new Router(); + r.add('GET', '/users/:id', 'u'); + r.build(); + + const longQs = 'q=' + 'x'.repeat(1000); + expect(() => r.match('GET', `/users/42?${longQs}`)).not.toThrow(); + }); + + it('matches path containing colon character in param value', () => { + const r = new Router(); + r.add('GET', '/at/:where', 'at'); + r.build(); + + const m = r.match('GET', '/at/host:port'); + + expect(m).not.toBeNull(); + expect(m!.params.where).toBe('host:port'); + }); + + it('matches very deep param chain', () => { + const r = new Router(); + r.add('GET', '/a/:p1/b/:p2/c/:p3/d/:p4/e/:p5/f/:p6', 'deep'); + r.build(); + + const m = r.match('GET', '/a/1/b/2/c/3/d/4/e/5/f/6'); + + expect(m).not.toBeNull(); + expect(m!.params).toEqual({ p1: '1', p2: '2', p3: '3', p4: '4', p5: '5', p6: '6' }); + }); +}); + +describe('cache stress', () => { + it('miss cache evicts oldest when full (FIFO)', () => { + const r = new Router({ cacheSize: 3 }); + r.add('GET', '/users/:id', 'u'); + r.build(); + + r.match('GET', '/miss1'); + r.match('GET', '/miss2'); + r.match('GET', '/miss3'); + r.match('GET', '/miss4'); + + expect(r.match('GET', '/miss1')).toBeNull(); + expect(r.match('GET', '/miss4')).toBeNull(); + }); + + it('hit cache returns the same value across repeated identical paths', () => { + const r = new Router({}); + r.add('GET', '/users/:id', 'u'); + r.build(); + + const a = r.match('GET', '/users/42')!; + const b = r.match('GET', '/users/42')!; + + expect(a.value).toBe(b.value); + expect(a.params).toEqual(b.params); + }); +}); + +describe('method registry', () => { + const CUSTOM_LIMIT = 25; + + it('accepts up to 25 distinct custom methods (32 total including defaults)', () => { + const r = new Router(); + + for (let i = 0; i < CUSTOM_LIMIT; i++) { + const m = `M${i.toString().padStart(2, '0')}` as unknown as 'GET'; + r.add(m, `/route${i}`, i); + } + + expect(() => r.build()).not.toThrow(); + }); + + it('throws method-limit when registering the 33rd total method', () => { + const r = new Router(); + + for (let i = 0; i < CUSTOM_LIMIT; i++) { + const m = `M${i.toString().padStart(2, '0')}` as unknown as 'GET'; + r.add(m, `/route${i}`, i); + } + + r.add('OVERFLOW' as unknown as 'GET', '/r33', 33); + expect(() => r.build()).toThrow(RouterError); + }); +}); diff --git a/packages/router/test/e2e/encoded-paths.test.ts b/packages/router/test/e2e/encoded-paths.test.ts new file mode 100644 index 0000000..085baaf --- /dev/null +++ b/packages/router/test/e2e/encoded-paths.test.ts @@ -0,0 +1,168 @@ +import { describe, expect, it } from 'bun:test'; + +import { Router } from '../../src/router'; +import { MatchSource } from '../../src/types'; + +describe('percent-decoded param values', () => { + it('decodes ASCII percent-encoded segment', () => { + const r = new Router(); + r.add('GET', '/users/:name', 'h'); + r.build(); + expect(r.match('GET', '/users/foo%20bar')?.params['name']).toBe('foo bar'); + expect(r.match('GET', '/users/a%2Bb')?.params['name']).toBe('a+b'); + expect(r.match('GET', '/users/%2D')?.params['name']).toBe('-'); + }); + + it('decodes multibyte UTF-8', () => { + const r = new Router(); + r.add('GET', '/x/:name', 'h'); + r.build(); + expect(r.match('GET', '/x/%E4%B8%80')?.params['name']).toBe('一'); + expect(r.match('GET', '/x/%F0%9F%98%80')?.params['name']).toBe('😀'); + }); + + it('preserves literal value when no percent', () => { + const r = new Router(); + r.add('GET', '/x/:name', 'h'); + r.build(); + expect(r.match('GET', '/x/normal')?.params['name']).toBe('normal'); + }); + + it('rejects encoded slash inside captured value (path-encoded-slash policy)', () => { + const r = new Router(); + r.add('GET', '/users/:name', 'h'); + r.build(); + expect(r.match('GET', '/users/a%2Fb')?.params['name']).toBe('a/b'); + }); + + it('wildcard captures encoded slash bytes raw (not decoded) in tail', () => { + const r = new Router(); + r.add('GET', '/files/*path', 'h'); + r.build(); + expect(r.match('GET', '/files/a%2Fb')?.params['path']).toBe('a%2Fb'); + expect(r.match('GET', '/files/deep/nested/file.txt')?.params['path']).toBe('deep/nested/file.txt'); + }); + + it('repeated dynamic match returns identical params (cache hit semantics)', () => { + const r = new Router(); + r.add('GET', '/users/:name', 'h'); + r.build(); + const first = r.match('GET', '/users/foo%20bar'); + expect(first?.meta.source).toBe(MatchSource.Dynamic); + expect(first?.params['name']).toBe('foo bar'); + const second = r.match('GET', '/users/foo%20bar'); + expect(second?.meta.source).toBe(MatchSource.Cache); + expect(second?.params['name']).toBe('foo bar'); + const third = r.match('GET', '/users/foo%20bar'); + expect(third?.params['name']).toBe('foo bar'); + }); +}); + +describe('case folding (caseSensitive=false)', () => { + it('matches case-insensitively when configured', () => { + const r = new Router({ pathCaseSensitive: false }); + r.add('GET', '/Users/:Id', 'h'); + r.build(); + expect(r.match('GET', '/users/42')?.value).toBe('h'); + expect(r.match('GET', '/USERS/42')?.value).toBe('h'); + expect(r.match('GET', '/Users/42')?.value).toBe('h'); + }); + + it('preserves case when caseSensitive=true (default)', () => { + const r = new Router(); + r.add('GET', '/Users/:Id', 'h'); + r.build(); + expect(r.match('GET', '/Users/42')?.value).toBe('h'); + expect(r.match('GET', '/users/42')).toBeNull(); + }); +}); + +describe('trailing slash normalization', () => { + it('trims trailing slash by default (ignoreTrailingSlash unset defaults to true)', () => { + const r = new Router(); + r.add('GET', '/x/y', 'h'); + r.build(); + expect(r.match('GET', '/x/y')?.value).toBe('h'); + expect(r.match('GET', '/x/y/')?.value).toBe('h'); + }); + + it('preserves trailing slash distinction in match probe when ignoreTrailingSlash=false', () => { + const r = new Router({ ignoreTrailingSlash: false }); + r.add('GET', '/x/y', 'h'); + r.build(); + expect(r.match('GET', '/x/y')?.value).toBe('h'); + expect(r.match('GET', '/x/y/')).toBeNull(); + }); +}); + +describe('integration — register/build/match end-to-end', () => { + it('handles a realistic REST API with mixed shapes', () => { + const r = new Router(); + r.add('GET', '/health', 'health'); + r.add('GET', '/api/v1/users', 'list-users'); + r.add('POST', '/api/v1/users', 'create-user'); + r.add('GET', '/api/v1/users/:id', 'get-user'); + r.add('PATCH', '/api/v1/users/:id', 'update-user'); + r.add('DELETE', '/api/v1/users/:id', 'delete-user'); + r.add('GET', '/api/v1/users/:id/posts', 'list-posts'); + r.add('GET', '/api/v1/users/:id/posts/:postId', 'get-post'); + r.add('GET', '/static/*path', 'static'); + r.build(); + + expect(r.match('GET', '/health')?.value).toBe('health'); + expect(r.match('GET', '/api/v1/users')?.value).toBe('list-users'); + expect(r.match('POST', '/api/v1/users')?.value).toBe('create-user'); + expect(r.match('GET', '/api/v1/users/42')?.value).toBe('get-user'); + expect(r.match('PATCH', '/api/v1/users/42')?.value).toBe('update-user'); + expect(r.match('DELETE', '/api/v1/users/42')?.value).toBe('delete-user'); + expect(r.match('GET', '/api/v1/users/42/posts')?.value).toBe('list-posts'); + expect(r.match('GET', '/api/v1/users/42/posts/100')?.value).toBe('get-post'); + expect(r.match('GET', '/static/index.html')?.value).toBe('static'); + expect(r.match('GET', '/static/nested/path/file.css')?.value).toBe('static'); + expect(r.match('GET', '/missing')).toBeNull(); + expect(r.match('PUT', '/api/v1/users')).toBeNull(); + }); + + it('addAll bulk registration', () => { + const r = new Router(); + r.addAll([ + ['GET', '/a', 'a'], + ['GET', '/b', 'b'], + ['POST', '/c', 'c'], + ]); + r.build(); + expect(r.match('GET', '/a')?.value).toBe('a'); + expect(r.match('GET', '/b')?.value).toBe('b'); + expect(r.match('POST', '/c')?.value).toBe('c'); + }); + + it('multi-method registration via array', () => { + const r = new Router(); + r.add(['GET', 'POST'], '/x', 'multi'); + r.build(); + expect(r.match('GET', '/x')?.value).toBe('multi'); + expect(r.match('POST', '/x')?.value).toBe('multi'); + expect(r.match('DELETE', '/x')).toBeNull(); + }); + + it('wildcard method (*) expands to every registered method at seal', () => { + const r = new Router(); + r.add('*', '/x', 'all'); + r.add('PATCH', '/y', 'patch-y'); + r.build(); + expect(r.match('GET', '/x')?.value).toBe('all'); + expect(r.match('POST', '/x')?.value).toBe('all'); + expect(r.match('PATCH', '/x')?.value).toBe('all'); + }); + + it('cache hit on repeated dynamic match', () => { + const r = new Router(); + r.add('GET', '/users/:id', 'h'); + r.build(); + const first = r.match('GET', '/users/42'); + const second = r.match('GET', '/users/42'); + expect(first?.value).toBe('h'); + expect(second?.value).toBe('h'); + expect(second?.meta.source).toBe(MatchSource.Cache); + }); +}); diff --git a/packages/router/test/e2e/error-invariants.test.ts b/packages/router/test/e2e/error-invariants.test.ts new file mode 100644 index 0000000..87d9f5e --- /dev/null +++ b/packages/router/test/e2e/error-invariants.test.ts @@ -0,0 +1,239 @@ +import { describe, expect, it } from 'bun:test'; + +import type { RouterErrorData } from '../../src/types'; + +import { Router, RouterError } from '../../index'; +import { RouterErrorKind } from '../../src/types'; +import { catchRouterError, expectErrorKind, firstBuildIssue } from '../test-utils'; + +function assertActionable(data: RouterErrorData, expectedKind: RouterErrorKind): void { + expect(data.kind).toBe(expectedKind); + expect(typeof data.message).toBe('string'); + expect(data.message.length).toBeGreaterThan(0); + + if (data.kind !== RouterErrorKind.RouteValidation) { + expect(typeof data.suggestion).toBe('string'); + expect(data.suggestion.length).toBeGreaterThan(0); + } +} + +function assertIssueMessageActionable(issue: { error: RouterErrorData }): void { + expect(typeof issue.error.message).toBe('string'); + expect(issue.error.message.length).toBeGreaterThan(0); + if (issue.error.kind !== RouterErrorKind.RouteValidation) { + expect(typeof issue.error.suggestion).toBe('string'); + expect(issue.error.suggestion.length).toBeGreaterThan(0); + } +} + +describe('every RouterError carries actionable kind + message + suggestion', () => { + it('router-options-invalid (cacheSize)', () => { + expect(() => new Router({ cacheSize: -1 })).toThrow(RouterError); + try { + new Router({ cacheSize: -1 }); + } catch (e) { + assertActionable((e as RouterError).data, RouterErrorKind.RouterOptionsInvalid); + } + }); + + it(RouterErrorKind.RouterSealed, () => { + const r = new Router(); + r.add('GET', '/x', 'x'); + r.build(); + const err = catchRouterError(() => r.add('GET', '/y', 'y')); + assertActionable(err.data, RouterErrorKind.RouterSealed); + }); + + it(RouterErrorKind.MethodEmpty, () => { + const r = new Router(); + r.add('', '/x', 'x'); + assertActionable(firstBuildIssue(r), RouterErrorKind.MethodEmpty); + }); + + it(RouterErrorKind.MethodInvalidToken, () => { + const r = new Router(); + r.add('GET POST', '/x', 'x'); + assertActionable(firstBuildIssue(r), RouterErrorKind.MethodInvalidToken); + }); + + it(RouterErrorKind.MethodLimit, () => { + const r = new Router(); + for (let i = 0; i < 26; i++) { + r.add(`CUSTOM${i}`, `/x${i}`, `h${i}`); + } + assertActionable(firstBuildIssue(r), RouterErrorKind.MethodLimit); + }); + + it(RouterErrorKind.PathMissingLeadingSlash, () => { + const r = new Router(); + r.add('GET', 'users', 'x'); + assertActionable(firstBuildIssue(r), RouterErrorKind.PathMissingLeadingSlash); + }); + + it(RouterErrorKind.PathQuery, () => { + const r = new Router(); + r.add('GET', '/a?b', 'x'); + assertActionable(firstBuildIssue(r), RouterErrorKind.PathQuery); + }); + + it(RouterErrorKind.PathFragment, () => { + const r = new Router(); + r.add('GET', '/a#b', 'x'); + assertActionable(firstBuildIssue(r), RouterErrorKind.PathFragment); + }); + + it(RouterErrorKind.PathControlChar, () => { + const r = new Router(); + r.add('GET', '/a\x01b', 'x'); + assertActionable(firstBuildIssue(r), RouterErrorKind.PathControlChar); + }); + + it(RouterErrorKind.PathMalformedPercent, () => { + const r = new Router(); + r.add('GET', '/a/%ZZ', 'x'); + assertActionable(firstBuildIssue(r), RouterErrorKind.PathMalformedPercent); + }); + + it(RouterErrorKind.PathInvalidPchar, () => { + const r = new Router(); + r.add('GET', '/a/', 'x'); + assertActionable(firstBuildIssue(r), RouterErrorKind.PathInvalidPchar); + }); + + it(RouterErrorKind.PathEncodedSlash, () => { + const r = new Router(); + r.add('GET', '/a/%2F', 'x'); + assertActionable(firstBuildIssue(r), RouterErrorKind.PathEncodedSlash); + }); + + it(RouterErrorKind.PathInvalidUtf8, () => { + const r = new Router(); + r.add('GET', '/a/%C0%80', 'x'); + assertActionable(firstBuildIssue(r), RouterErrorKind.PathInvalidUtf8); + }); + + it(RouterErrorKind.PathDotSegment, () => { + const r = new Router(); + r.add('GET', '/a/../b', 'x'); + assertActionable(firstBuildIssue(r), RouterErrorKind.PathDotSegment); + }); + + it(RouterErrorKind.PathEmptySegment, () => { + const r = new Router(); + r.add('GET', '/a//b', 'x'); + assertActionable(firstBuildIssue(r), RouterErrorKind.PathEmptySegment); + }); + + it(RouterErrorKind.ParamDuplicate, () => { + const r = new Router(); + r.add('GET', '/users/:id/posts/:id', 'x'); + assertActionable(firstBuildIssue(r), RouterErrorKind.ParamDuplicate); + }); + + it('route-parse (unclosed regex)', () => { + const r = new Router(); + r.add('GET', '/users/:id(\\d+', 'x'); + assertActionable(firstBuildIssue(r), RouterErrorKind.RouteParse); + }); + + it('route-parse (invalid regex body — compile failure)', () => { + const r = new Router(); + r.add('GET', '/users/:id([z-a])', 'x'); + assertActionable(firstBuildIssue(r), RouterErrorKind.RouteParse); + }); + + it(RouterErrorKind.RouteDuplicate, () => { + const r = new Router(); + r.add('GET', '/x', 'a'); + r.add('GET', '/x', 'b'); + assertActionable(firstBuildIssue(r), RouterErrorKind.RouteDuplicate); + }); + + it('route-conflict (regex sibling overlap)', () => { + const r = new Router(); + r.add('GET', '/users/:id(\\d+)', 'numeric'); + r.add('GET', '/users/:id([a-z]+)', 'alpha'); + assertActionable(firstBuildIssue(r), RouterErrorKind.RouteConflict); + }); + + it('route-unreachable (static under ancestor wildcard)', () => { + const r = new Router(); + r.add('GET', '/api/*', 'wildcard'); + r.add('GET', '/api/specific', 'specific'); + assertActionable(firstBuildIssue(r), RouterErrorKind.RouteUnreachable); + }); + + it('route-validation (umbrella) — message is non-empty, errors[] is populated', () => { + const r = new Router(); + r.add('GET', '/x', 'a'); + r.add('GET', '/x', 'b'); + const err = catchRouterError(() => r.build()); + const data = expectErrorKind(err.data, RouterErrorKind.RouteValidation); + expect(data.message.length).toBeGreaterThan(0); + expect(data.errors.length).toBeGreaterThan(0); + for (const issue of data.errors) { + assertIssueMessageActionable(issue); + } + }); +}); + +describe('every conflict-class RouterError carries segment + conflictsWith', () => { + it('route-conflict provides segment + conflictsWith', () => { + const r = new Router(); + r.add('GET', '/users/:id(\\d+)', 'numeric'); + r.add('GET', '/users/:id([a-z]+)', 'alpha'); + const issue = expectErrorKind(firstBuildIssue(r), RouterErrorKind.RouteConflict); + expect(typeof issue.segment).toBe('string'); + expect(issue.segment.length).toBeGreaterThan(0); + expect(typeof issue.conflictsWith).toBe('string'); + expect(issue.conflictsWith.length).toBeGreaterThan(0); + }); + + it('route-unreachable provides segment + conflictsWith', () => { + const r = new Router(); + r.add('GET', '/api/*', 'wildcard'); + r.add('GET', '/api/specific', 'specific'); + const issue = expectErrorKind(firstBuildIssue(r), RouterErrorKind.RouteUnreachable); + expect(typeof issue.segment).toBe('string'); + expect(issue.segment.length).toBeGreaterThan(0); + expect(typeof issue.conflictsWith).toBe('string'); + expect(issue.conflictsWith.length).toBeGreaterThan(0); + }); + + it('param-duplicate provides segment', () => { + const r = new Router(); + r.add('GET', '/users/:id/posts/:id', 'x'); + const issue = expectErrorKind(firstBuildIssue(r), RouterErrorKind.ParamDuplicate); + expect(issue.segment).toBe('id'); + }); + + it('path-invalid-pchar provides segment (the offending character)', () => { + const r = new Router(); + r.add('GET', '/a/', 'x'); + const issue = expectErrorKind(firstBuildIssue(r), RouterErrorKind.PathInvalidPchar); + expect(issue.segment.length).toBe(1); + }); +}); + +describe('context fields (path + method) propagate to every emitted error', () => { + it('add() throws — router-sealed carries the failing path + method', () => { + const r = new Router(); + r.build(); + const err = catchRouterError(() => r.add('POST', '/new', 'x')); + expect(err.data.path).toBe('/new'); + expect(err.data.method).toBe('POST'); + }); + + it('build() validation errors carry path + method per route', () => { + const r = new Router(); + r.add('GET', '/users/:id', 'a'); + r.add('GET', '/users/:slug', 'b'); + const err = catchRouterError(() => r.build()); + const data = expectErrorKind(err.data, RouterErrorKind.RouteValidation); + const first = data.errors[0]!; + expect(first.method).toBe('GET'); + expect(first.path).toBe('/users/:slug'); + expect(first.error.path).toBe('/users/:slug'); + expect(first.error.method).toBe('GET'); + }); +}); diff --git a/packages/router/test/e2e/error-kinds.test.ts b/packages/router/test/e2e/error-kinds.test.ts new file mode 100644 index 0000000..c0319c3 --- /dev/null +++ b/packages/router/test/e2e/error-kinds.test.ts @@ -0,0 +1,169 @@ +import { describe, it, expect } from 'bun:test'; + +import type { RouterErrorData } from '../../src/types'; + +import { RouterError } from '../../src/error'; +import { Router } from '../../src/router'; +import { RouterErrorKind } from '../../src/types'; + +function expectKindOnAdd(fn: () => void, kind: RouterErrorKind): void { + try { + fn(); + } catch (e) { + expect(e).toBeInstanceOf(RouterError); + expect((e as RouterError).data.kind).toBe(kind); + return; + } + throw new Error(`expected RouterError(${kind}) on add()`); +} + +function expectKindOnBuild(register: (r: Router) => void, kind: RouterErrorKind): RouterErrorData { + const r = new Router(); + register(r); + try { + r.build(); + } catch (e) { + expect(e).toBeInstanceOf(RouterError); + const err = e as RouterError; + if (err.data.kind === RouterErrorKind.RouteValidation) { + const inner = err.data.errors[0]!.error; + expect(inner.kind as string).toBe(kind); + return inner; + } + expect(err.data.kind as string).toBe(kind); + return err.data; + } + throw new Error(`expected RouterError(${kind}) on build()`); +} + +describe('RouterErrorKind reproducers (full coverage of 21 kinds)', () => { + it(RouterErrorKind.RouterSealed, () => { + const r = new Router(); + r.build(); + expectKindOnAdd(() => r.add('GET', '/x', 'v'), RouterErrorKind.RouterSealed); + }); + + it(RouterErrorKind.MethodEmpty, () => { + expectKindOnBuild(r => r.add('', '/x', 'v'), RouterErrorKind.MethodEmpty); + }); + + it(RouterErrorKind.MethodInvalidToken, () => { + expectKindOnBuild(r => r.add('GET ', '/x', 'v'), RouterErrorKind.MethodInvalidToken); + }); + + it(RouterErrorKind.MethodLimit, () => { + expectKindOnBuild(r => { + for (let i = 0; i < 40; i++) { + r.add(`M${i.toString().padStart(2, '0')}`, '/x', `v-${i}`); + } + }, RouterErrorKind.MethodLimit); + }); + + it(RouterErrorKind.PathMissingLeadingSlash, () => { + expectKindOnBuild(r => r.add('GET', 'no-slash', 'v'), RouterErrorKind.PathMissingLeadingSlash); + }); + + it(RouterErrorKind.PathQuery, () => { + expectKindOnBuild(r => r.add('GET', '/foo?bar', 'v'), RouterErrorKind.PathQuery); + }); + + it(RouterErrorKind.PathFragment, () => { + expectKindOnBuild(r => r.add('GET', '/foo#frag', 'v'), RouterErrorKind.PathFragment); + }); + + it(RouterErrorKind.PathControlChar, () => { + expectKindOnBuild(r => r.add('GET', '/foobar', 'v'), RouterErrorKind.PathControlChar); + }); + + it(RouterErrorKind.PathInvalidPchar, () => { + expectKindOnBuild(r => r.add('GET', '/foo\\bar', 'v'), RouterErrorKind.PathInvalidPchar); + }); + + it(RouterErrorKind.PathMalformedPercent, () => { + expectKindOnBuild(r => r.add('GET', '/foo%G0bar', 'v'), RouterErrorKind.PathMalformedPercent); + }); + + it(RouterErrorKind.PathEncodedSlash, () => { + expectKindOnBuild(r => r.add('GET', '/foo/%2F/bar', 'v'), RouterErrorKind.PathEncodedSlash); + }); + + it(RouterErrorKind.PathDotSegment, () => { + expectKindOnBuild(r => r.add('GET', '/foo/../bar', 'v'), RouterErrorKind.PathDotSegment); + }); + + it(RouterErrorKind.PathEmptySegment, () => { + expectKindOnBuild(r => r.add('GET', '/foo//bar', 'v'), RouterErrorKind.PathEmptySegment); + }); + + it('route-parse (unclosed regex)', () => { + expectKindOnBuild(r => r.add('GET', '/users/:id(\\d+', 'v'), RouterErrorKind.RouteParse); + }); + + it('route-parse (optional cap)', () => { + expectKindOnBuild(r => { + const path = '/' + Array.from({ length: 5 }, (_, i) => `:p${i}?`).join('/'); + r.add('GET', path, 'v'); + }, RouterErrorKind.RouteParse); + }); + + it('route-parse (31-capture cap)', () => { + expectKindOnBuild(r => { + const path = '/' + Array.from({ length: 32 }, (_, i) => `:p${i}`).join('/'); + r.add('GET', path, 'v'); + }, RouterErrorKind.RouteParse); + }); + + it(RouterErrorKind.ParamDuplicate, () => { + expectKindOnBuild(r => r.add('GET', '/users/:id/:id', 'v'), RouterErrorKind.ParamDuplicate); + }); + + it(RouterErrorKind.RouteDuplicate, () => { + expectKindOnBuild(r => { + r.add('GET', '/x', 'a'); + r.add('GET', '/x', 'b'); + }, RouterErrorKind.RouteDuplicate); + }); + + it(RouterErrorKind.RouteConflict, () => { + expectKindOnBuild(r => { + r.add('GET', '/users/:id(\\d+)', 'a'); + r.add('GET', '/users/:slug([a-z]+)', 'b'); + }, RouterErrorKind.RouteConflict); + }); + + it(RouterErrorKind.RouteUnreachable, () => { + expectKindOnBuild(r => { + r.add('GET', '/users/*tail', 'a'); + r.add('GET', '/users/me', 'b'); + }, RouterErrorKind.RouteUnreachable); + }); + + it(RouterErrorKind.PathInvalidUtf8, () => { + expectKindOnBuild(r => r.add('GET', '/a/%C0%80', 'v'), RouterErrorKind.PathInvalidUtf8); + }); + + it(RouterErrorKind.RouterOptionsInvalid, () => { + try { + new Router({ cacheSize: -1 }); + } catch (e) { + expect(e).toBeInstanceOf(RouterError); + expect((e as RouterError).data.kind).toBe(RouterErrorKind.RouterOptionsInvalid); + return; + } + throw new Error(`expected RouterError(${RouterErrorKind.RouterOptionsInvalid}) on construct`); + }); + + it(RouterErrorKind.RouteValidation, () => { + const r = new Router(); + r.add('GET', '/x', 'a'); + r.add('GET', '/x', 'b'); + try { + r.build(); + } catch (e) { + expect(e).toBeInstanceOf(RouterError); + expect((e as RouterError).data.kind).toBe(RouterErrorKind.RouteValidation); + return; + } + throw new Error(`expected RouterError(${RouterErrorKind.RouteValidation}) on build()`); + }); +}); diff --git a/packages/router/test/e2e/negative-inputs.test.ts b/packages/router/test/e2e/negative-inputs.test.ts new file mode 100644 index 0000000..8296b61 --- /dev/null +++ b/packages/router/test/e2e/negative-inputs.test.ts @@ -0,0 +1,260 @@ +import { describe, it, expect } from 'bun:test'; + +import { Router, RouterError } from '../../index'; +import { RouterErrorKind } from '../../src/types'; + +describe('match() tolerates structurally odd well-formed paths', () => { + function setupGenericRouter() { + const r = new Router(); + r.add('GET', '/users/:id', 'u'); + r.add('GET', '/files/*p', 'f'); + r.add('GET', '/health', 'h'); + r.build(); + + return r; + } + + const badPaths: Array<[string, string]> = [ + ['empty string', ''], + ['just question mark', '?'], + ['just hash', '#'], + ['no leading slash', 'users/42'], + ['only slash', '/'], + ['double slash', '//'], + ['triple slash', '///'], + ['NUL char in path', '/users/\u0000'], + ['control chars', '/users/\x01\x02\x03'], + ['only query', '/?q=1'], + ['unicode whitespace', '/users/\u3000'], + ['BOM at start', '\uFEFF/users/42'], + ]; + + for (const [name, path] of badPaths) { + it(`returns a result (null or match) for ${name} without throwing`, () => { + const r = setupGenericRouter(); + + expect(() => r.match('GET', path)).not.toThrow(); + }); + } + + it('returns null for unknown HTTP methods (not in the registered set)', () => { + const r = setupGenericRouter(); + + expect(r.match('TRACE' as 'GET', '/health')).toBeNull(); + expect(r.match('CONNECT' as 'GET', '/users/42')).toBeNull(); + }); + + it('returns null for an unregistered custom method on a known path', () => { + const r = setupGenericRouter(); + expect(r.match('PURGE' as 'GET', '/health')).toBeNull(); + }); + + it('returns null for a registered custom method on a different path', () => { + const r = new Router(); + r.add('PURGE', '/a', 'x'); + r.build(); + expect(r.match('PURGE', '/missing')).toBeNull(); + expect(r.match('MKCOL', '/a')).toBeNull(); + }); + + it('returns null when match() is called before build()', () => { + const r = new Router(); + r.add('GET', '/foo', 'x'); + expect(r.match('GET', '/foo')).toBeNull(); + }); + + it('does not throw on extremely long URLs', () => { + const r = new Router(); + r.add('GET', '/health', 'u'); + r.build(); + + const path = '/health/' + 'x'.repeat(1_000_000); + + expect(() => r.match('GET', path)).not.toThrow(); + expect(r.match('GET', path)).toBeNull(); + }); +}); + +describe('match() propagates URIError on malformed percent-encoded paths', () => { + it('throws on every malformed percent-escape variant (caller responsibility)', () => { + const r = new Router(); + r.add('GET', '/users/:name', 'u'); + r.build(); + + const malformed = ['/users/%', '/users/%XY', '/users/%E0', '/users/abc%']; + + for (const path of malformed) { + expect(() => r.match('GET', path)).toThrow(); + } + }); +}); + +describe('build() rejects malformed registration input', () => { + it('throws RouterError on duplicate route', () => { + const r = new Router(); + r.add('GET', '/x', 'first'); + r.add('GET', '/x', 'second'); + + expect(() => r.build()).toThrow(RouterError); + }); + + it('throws RouterError on empty param name (e.g. "/:")', () => { + const r = new Router(); + + r.add('GET', '/users/:', 'u'); + expect(() => r.build()).toThrow(RouterError); + }); + + it('throws RouterError on duplicate param names within one route', () => { + const r = new Router(); + + r.add('GET', '/users/:x/posts/:x', 'u'); + expect(() => r.build()).toThrow(RouterError); + }); + + it('throws RouterError when a param and a star wildcard collide at the same segment position', () => { + const r = new Router(); + + r.add('GET', '/a/:p', 'param'); + r.add('GET', '/a/*wild', 'wild'); + expect(() => r.build()).toThrow(RouterError); + }); + + it('throws RouterError on a regex body with balanced parens but invalid content (compile failure)', () => { + const r = new Router(); + + // `([` passes the parser's paren-balance/anchor checks but `new RegExp` throws, + // so the segment-tree's resolveOrCompileTester is the sole catcher. + r.add('GET', '/x/:id([)', 'h'); + expect(() => r.build()).toThrow(RouterError); + }); + + it('throws RouterError on wildcard not at end', () => { + const r = new Router(); + + r.add('GET', '/files/*p/middle', 'f'); + expect(() => r.build()).toThrow(RouterError); + }); + + it('throws RouterError on same-method conflicting wildcard names', () => { + const r = new Router(); + r.add('GET', '/files/*p', 'f'); + r.add('GET', '/files/*q', 'f2'); + + expect(() => r.build()).toThrow(RouterError); + }); + + it('throws RouterError on static route conflicting with existing wildcard prefix', () => { + const r = new Router(); + r.add('GET', '/files/*p', 'f'); + r.add('GET', '/files/static', 'sf'); + + expect(() => r.build()).toThrow(RouterError); + }); + + it('throws RouterError when add() array partially crosses the method cap', () => { + const r = new Router(); + for (let i = 0; i < 25; i++) { + r.add(`M${i}`, '/warm', 'x'); + } + r.add(['GET', 'NEWMETHOD'], '/a', 'y'); + + expect(() => r.build()).toThrow(RouterError); + expect(r.match('GET', '/a')).toBeNull(); + }); +}); + +describe('regex pattern body (regex safety is user responsibility)', () => { + it('accepts backreference patterns (ReDoS gating is framework responsibility)', () => { + const r = new Router(); + r.add('GET', '/x/:id((?:a)\\1)', 'x'); + expect(() => r.build()).not.toThrow(); + }); + + it('accepts nested unlimited quantifiers (ReDoS gating is framework responsibility)', () => { + const r = new Router(); + r.add('GET', '/x/:id((?:a+)+)', 'x'); + expect(() => r.build()).not.toThrow(); + }); + + it('rejects ^/$ anchors at build (parser correctness — wrapper conflicts with user anchors)', () => { + const r = new Router(); + r.add('GET', '/x/:id(^abc$)', 'x'); + expect(() => r.build()).toThrow(RouterError); + }); +}); + +describe('state transition errors', () => { + it('add() after build() throws RouterError', () => { + const r = new Router(); + r.add('GET', '/x', 'a'); + r.build(); + + let err: RouterError | undefined; + try { + r.add('GET', '/y', 'b'); + } catch (e) { + err = e as RouterError; + } + + expect(err).toBeInstanceOf(RouterError); + expect(err!.data.kind).toBe(RouterErrorKind.RouterSealed); + }); + + it('match() before build() returns null (does not throw)', () => { + const r = new Router(); + r.add('GET', '/x', 'a'); + + expect(() => r.match('GET', '/x')).not.toThrow(); + expect(r.match('GET', '/x')).toBeNull(); + }); +}); + +describe('misuse rejection', () => { + it('rejects sibling param routes from different handlers as unreachable', () => { + const r = new Router(); + r.add('GET', '/users/:id', 'first'); + r.add('GET', '/users/:slug', 'second'); + + expect(() => r.build()).toThrow(RouterError); + }); + + it('rejects optional-expansion siblings whose paramName differs at the same segment position', () => { + const r = new Router(); + + r.add('GET', '/users/:a?/:b?', 'opt'); + expect(() => r.build()).toThrow(RouterError); + }); + + it('rejects a plain param sibling adjacent to a regex param at the same segment', () => { + const r = new Router(); + r.add('GET', '/a/:id(\\d+)', 'numeric'); + r.add('GET', '/a/:slug', 'catchall'); + + expect(() => r.build()).toThrow(RouterError); + }); + + it('rejects empty path (must start with "/")', () => { + const r = new Router(); + + r.add('GET', '', 'r'); + expect(() => r.build()).toThrow(RouterError); + }); +}); + +describe('optional expansion — single optional', () => { + it('a single optional segment registers and matches both present and dropped variants', () => { + const r = new Router(); + r.add('GET', '/x/:tail?', 'x'); + r.build(); + + const present = r.match('GET', '/x/abc'); + expect(present).not.toBeNull(); + expect(present!.value).toBe('x'); + expect(present!.params.tail).toBe('abc'); + + const dropped = r.match('GET', '/x'); + expect(dropped).not.toBeNull(); + expect(dropped!.value).toBe('x'); + }); +}); diff --git a/packages/router/test/e2e/option-matrix.test.ts b/packages/router/test/e2e/option-matrix.test.ts new file mode 100644 index 0000000..93f3324 --- /dev/null +++ b/packages/router/test/e2e/option-matrix.test.ts @@ -0,0 +1,462 @@ +import { describe, expect, it } from 'bun:test'; + +import { Router } from '../../src/router'; +import { MatchSource } from '../../src/types'; + +describe('ignoreTrailingSlash: true × route type', () => { + it('static: trailing slash variant matches the no-slash route', () => { + const r = new Router({ ignoreTrailingSlash: true }); + r.add('GET', '/health', 'h'); + r.build(); + + expect(r.match('GET', '/health/')!.value).toBe('h'); + expect(r.match('GET', '/health')!.value).toBe('h'); + }); + + it('single param: trailing slash trims before match', () => { + const r = new Router({ ignoreTrailingSlash: true }); + r.add('GET', '/users/:id', 'u'); + r.build(); + + expect(r.match('GET', '/users/42/')!.params).toEqual({ id: '42' }); + expect(r.match('GET', '/users/42')!.params).toEqual({ id: '42' }); + }); + + it('param chain: trailing slash trims', () => { + const r = new Router({ ignoreTrailingSlash: true }); + r.add('GET', '/users/:id/posts/:postId', 'p'); + r.build(); + + expect(r.match('GET', '/users/1/posts/2/')!.params).toEqual({ id: '1', postId: '2' }); + }); + + it('star wildcard: trailing slash trim does not affect wildcard capture', () => { + const r = new Router(); + r.add('GET', '/files/*p', 'f'); + r.build(); + + expect(r.match('GET', '/files/a/b/')!.params).toEqual({ p: 'a/b' }); + expect(r.match('GET', '/files/')!.params).toEqual({ p: '' }); + }); + + it('multi wildcard: trailing slash trim still requires non-empty suffix', () => { + const r = new Router(); + r.add('GET', '/files/*p+', 'f'); + r.build(); + + expect(r.match('GET', '/files/a/')!.params).toEqual({ p: 'a' }); + expect(r.match('GET', '/files/')).toBeNull(); + }); + + it('regex param: trailing slash trim does not bypass tester', () => { + const r = new Router(); + r.add('GET', '/users/:id(\\d+)', 'u'); + r.build(); + + expect(r.match('GET', '/users/42/')!.value).toBe('u'); + expect(r.match('GET', '/users/abc/')).toBeNull(); + }); + + it('star wildcard at terminal: trailing slash trim leaves empty capture intact', () => { + const r = new Router({ ignoreTrailingSlash: true }); + r.add('GET', '/files/*', 'val'); + r.build(); + expect(r.match('GET', '/files/')!.params['*']).toBe(''); + }); +}); + +describe('ignoreTrailingSlash: false × route type', () => { + it('static: trailing slash variant DOES NOT match', () => { + const r = new Router({ ignoreTrailingSlash: false }); + r.add('GET', '/health', 'h'); + r.build(); + + expect(r.match('GET', '/health/')).toBeNull(); + expect(r.match('GET', '/health')!.value).toBe('h'); + }); + + it('single param (codegen path): trailing slash on terminal param fails', () => { + const r = new Router({ ignoreTrailingSlash: false }); + r.add('GET', '/users/:id', 'u'); + r.build(); + + expect(r.match('GET', '/users/42/')).toBeNull(); + expect(r.match('GET', '/users/42')!.value).toBe('u'); + }); + + it('param chain: trailing slash on inner segment fails', () => { + const r = new Router({ ignoreTrailingSlash: false }); + r.add('GET', '/users/:id/posts/:postId', 'p'); + r.build(); + + expect(r.match('GET', '/users/1/posts/2/')).toBeNull(); + expect(r.match('GET', '/users/1/posts/2')!.value).toBe('p'); + }); + + it('star wildcard: empty trailing-slash position captures empty', () => { + const r = new Router({ ignoreTrailingSlash: false }); + r.add('GET', '/files/*p', 'f'); + r.build(); + + expect(r.match('GET', '/files')!.params.p).toBe(''); + expect(r.match('GET', '/files/')!.params.p).toBe(''); + }); + + it('multi wildcard: trailing slash with no content fails', () => { + const r = new Router({ ignoreTrailingSlash: false }); + r.add('GET', '/files/*p+', 'f'); + r.build(); + + expect(r.match('GET', '/files/')).toBeNull(); + expect(r.match('GET', '/files/x')!.params.p).toBe('x'); + }); +}); + +describe('pathCaseSensitive: true (default) × route type', () => { + it('static: case mismatch returns null', () => { + const r = new Router(); + r.add('GET', '/Health', 'h'); + r.build(); + + expect(r.match('GET', '/Health')!.value).toBe('h'); + expect(r.match('GET', '/health')).toBeNull(); + }); + + it('single param: case-mismatched static prefix returns null', () => { + const r = new Router(); + r.add('GET', '/Users/:id', 'u'); + r.build(); + + expect(r.match('GET', '/Users/42')!.value).toBe('u'); + expect(r.match('GET', '/users/42')).toBeNull(); + }); +}); + +describe('pathCaseSensitive: false × route type', () => { + it('static: case differences match', () => { + const r = new Router({ pathCaseSensitive: false }); + r.add('GET', '/Health', 'h'); + r.build(); + + expect(r.match('GET', '/Health')!.value).toBe('h'); + expect(r.match('GET', '/health')!.value).toBe('h'); + expect(r.match('GET', '/HEALTH')!.value).toBe('h'); + }); + + it('single param: prefix is case-folded for matching; param value keeps its original case', () => { + const r = new Router({ pathCaseSensitive: false }); + r.add('GET', '/Users/:id', 'u'); + r.build(); + + const m = r.match('GET', '/USERS/AbC')!; + + expect(m.value).toBe('u'); + expect(m.params.id).toBe('AbC'); + }); + + it('regex param: lowered input still passes the tester', () => { + const r = new Router({ pathCaseSensitive: false }); + r.add('GET', '/users/:id(\\d+)', 'val'); + r.build(); + const m = r.match('GET', '/USERS/42')!; + expect(m.value).toBe('val'); + expect(m.params.id).toBe('42'); + }); + + it('wildcard: prefix is case-folded for matching; captured tail keeps its original case', () => { + const r = new Router({ pathCaseSensitive: false }); + r.add('GET', '/files/*path', 'f'); + r.build(); + + const m = r.match('GET', '/FILES/A/Bc')!; + + expect(m.value).toBe('f'); + expect(m.params.path).toBe('A/Bc'); + }); + + it('case-folding does not corrupt a captured value containing a length-changing non-ASCII char', () => { + const r = new Router({ pathCaseSensitive: false }); + r.add('GET', '/:id/x', 'h'); + r.build(); + + const m = r.match('GET', '/İ/x')!; + + expect(m.value).toBe('h'); + expect(m.params.id).toBe('İ'); + }); +}); + +describe('decoding × cache', () => { + it('cached hit returns decoded value', () => { + const r = new Router(); + r.add('GET', '/users/:name', 'u'); + r.build(); + + const a = r.match('GET', '/users/hello%20world')!; + + expect(a.params.name).toBe('hello world'); + + const b = r.match('GET', '/users/hello%20world')!; + + expect(b.meta.source).toBe(MatchSource.Cache); + expect(b.params.name).toBe('hello world'); + }); + + it('wildcard suffix is preserved raw (no decode) and cached as-is', () => { + const r = new Router(); + r.add('GET', '/files/*path', 'val'); + r.build(); + const m = r.match('GET', '/files/a%20b/c')!; + expect(m.params.path).toBe('a%20b/c'); + }); +}); + +describe('cache × route type', () => { + it('static: every static lookup returns the pre-built MatchOutput directly', () => { + const r = new Router({}); + r.add('GET', '/health', 'h'); + r.build(); + + expect(r.match('GET', '/health')!.meta.source).toBe(MatchSource.Static); + expect(r.match('GET', '/health')!.meta.source).toBe(MatchSource.Static); + }); + + it('param: second hit comes from cache', () => { + const r = new Router({}); + r.add('GET', '/users/:id', 'u'); + r.build(); + + expect(r.match('GET', '/users/42')!.meta.source).toBe(MatchSource.Dynamic); + expect(r.match('GET', '/users/42')!.meta.source).toBe(MatchSource.Cache); + }); + + it('miss: re-asking the same missing URL is short-circuited', () => { + const r = new Router({}); + r.add('GET', '/users/:id', 'u'); + r.build(); + + expect(r.match('GET', '/nonexistent/path')).toBeNull(); + expect(r.match('GET', '/nonexistent/path')).toBeNull(); + }); +}); + +describe('omitMissingOptional × cache', () => { + it('omit + cache: missing optional remains absent on cached hit', () => { + const r = new Router({ omitMissingOptional: true }); + r.add('GET', '/users/:id?', 'u'); + r.build(); + + const a = r.match('GET', '/users')!; + + expect('id' in a.params).toBe(false); + + const b = r.match('GET', '/users')!; + + expect(b.meta.source).toBe(MatchSource.Cache); + expect('id' in b.params).toBe(false); + }); + + it('set-undefined + cache: id is undefined on cached hit', () => { + const r = new Router({ omitMissingOptional: false }); + r.add('GET', '/users/:id?', 'u'); + r.build(); + + const a = r.match('GET', '/users')!; + + expect('id' in a.params).toBe(true); + expect(a.params.id).toBeUndefined(); + + const b = r.match('GET', '/users')!; + + expect(b.params.id).toBeUndefined(); + }); + + it('caches each optional variant separately — present and absent', () => { + const r = new Router({ omitMissingOptional: false }); + r.add('GET', '/items/:id?', 'val'); + r.build(); + + const present1 = r.match('GET', '/items/42')!; + expect(present1.params.id).toBe('42'); + const absent1 = r.match('GET', '/items')!; + expect(absent1.params.id).toBeUndefined(); + + const present2 = r.match('GET', '/items/42')!; + expect(present2.meta.source).toBe(MatchSource.Cache); + expect(present2.params.id).toBe('42'); + + const absent2 = r.match('GET', '/items')!; + expect(absent2.meta.source).toBe(MatchSource.Cache); + expect(absent2.params.id).toBeUndefined(); + }); + + it('ignoreTrailingSlash + optional param: trimmed slash leaves optional absent', () => { + const r = new Router({ + ignoreTrailingSlash: true, + omitMissingOptional: false, + }); + r.add('GET', '/items/:id?', 'val'); + r.build(); + const m = r.match('GET', '/items/')!; + expect('id' in m.params).toBe(true); + expect(m.params.id).toBeUndefined(); + }); +}); + +describe('unbounded length', () => { + it('accepts arbitrarily long static path registrations', () => { + const r = new Router(); + r.add('GET', '/files/*p', 'f'); + r.build(); + + const longPath = '/files/' + 'x'.repeat(100_000); + const m = r.match('GET', longPath); + + expect(m).not.toBeNull(); + expect(m!.params.p?.length).toBe(100_000); + }); + + it('accepts long single-segment param values', () => { + const r = new Router(); + r.add('GET', '/users/:id', 'u'); + r.build(); + + const longId = 'x'.repeat(100_000); + const m = r.match('GET', `/users/${longId}`); + + expect(m).not.toBeNull(); + expect(m!.params.id?.length).toBe(100_000); + }); +}); + +describe('triple combinations', () => { + it('trim slash + case fold + cache: all three apply consistently', () => { + const r = new Router({ + ignoreTrailingSlash: true, + pathCaseSensitive: false, + }); + r.add('GET', '/Users/:id', 'u'); + r.build(); + + const a = r.match('GET', '/USERS/42/')!; + + expect(a.value).toBe('u'); + expect(a.params.id).toBe('42'); + + const b = r.match('GET', '/USERS/42/')!; + + expect(b.meta.source).toBe(MatchSource.Cache); + }); + + it('decode + tester + cache: all three apply for percent-encoded numeric', () => { + const r = new Router(); + r.add('GET', '/users/:id(\\d+)', 'u'); + r.build(); + + const a = r.match('GET', '/users/%34%32')!; + + expect(a.value).toBe('u'); + expect(a.params.id).toBe('42'); + + const b = r.match('GET', '/users/%34%32')!; + + expect(b.meta.source).toBe(MatchSource.Cache); + expect(b.params.id).toBe('42'); + }); + + it('all four flags simultaneously: caseSensitive=false + ignoreTrailingSlash + cacheSize + omitMissingOptional', () => { + const r = new Router({ + pathCaseSensitive: false, + ignoreTrailingSlash: true, + cacheSize: 10, + omitMissingOptional: false, + }); + r.add('GET', '/api/:category/:id?', 'val'); + r.build(); + + const present = r.match('GET', '/API/Products/42/')!; + expect(present.params.category).toBe('Products'); + expect(present.params.id).toBe('42'); + + const absent = r.match('GET', '/api/tools')!; + expect(absent.params.category).toBe('tools'); + expect('id' in absent.params).toBe(true); + expect(absent.params.id).toBeUndefined(); + }); +}); + +describe('cache-key normalization (trailing-slash collapses; case-variants stay distinct)', () => { + it('caseSensitive=false: case-variant captured values are each correct (not served stale from cache)', () => { + const r = new Router({ pathCaseSensitive: false }); + r.add('GET', '/u/:id', 'v'); + r.build(); + + const first = r.match('GET', '/U/AbC')!; + expect(first.meta.source).toBe(MatchSource.Dynamic); + expect(first.params.id).toBe('AbC'); + + // An identical repeated path must still cache-hit (the fix must not disable caching). + const repeat = r.match('GET', '/U/AbC')!; + expect(repeat.meta.source).toBe(MatchSource.Cache); + expect(repeat.params.id).toBe('AbC'); + + // A case-variant captured value must NOT be served stale from the prior entry. + const variant = r.match('GET', '/U/aBc')!; + expect(variant.params.id).toBe('aBc'); + }); + + it('caseSensitive=false: case-variant wildcard tails are each correct (not served stale from cache)', () => { + const r = new Router({ pathCaseSensitive: false }); + r.add('GET', '/files/*path', 'f'); + r.build(); + + expect(r.match('GET', '/Files/AbC')!.params.path).toBe('AbC'); + expect(r.match('GET', '/Files/aBc')!.params.path).toBe('aBc'); + }); + + it('ignoreTrailingSlash=true: trailing-slash and bare paths collapse to the same cache key', () => { + const r = new Router({ ignoreTrailingSlash: true }); + r.add('GET', '/api/:id', 'val'); + r.build(); + + const first = r.match('GET', '/api/42/')!; + expect(first.meta.source).toBe(MatchSource.Dynamic); + + const second = r.match('GET', '/api/42')!; + expect(second.meta.source).toBe(MatchSource.Cache); + expect(second.value).toBe('val'); + }); + + it('case + ignoreTrailingSlash combined: trailing-slash still collapses, but case stays distinct', () => { + const r = new Router({ + pathCaseSensitive: false, + ignoreTrailingSlash: true, + }); + r.add('GET', '/api/:id', 'val'); + r.build(); + + const first = r.match('GET', '/API/42/')!; + expect(first.meta.source).toBe(MatchSource.Dynamic); + + // Same case, different slash → trailing-slash trimming still collapses to one entry. + const sameCase = r.match('GET', '/API/42')!; + expect(sameCase.meta.source).toBe(MatchSource.Cache); + expect(sameCase.params.id).toBe('42'); + + // Different case → a distinct cache entry with its own (correctly-cased) capture. + const otherCase = r.match('GET', '/Api/42')!; + expect(otherCase.meta.source).toBe(MatchSource.Dynamic); + expect(otherCase.params.id).toBe('42'); + }); +}); + +describe('pathname-only contract', () => { + it('captures query characters as part of dynamic param value (caller strips ? before calling)', () => { + const r = new Router(); + r.add('GET', '/api/:id', 'val'); + r.build(); + + const m = r.match('GET', '/api/42?key=value&foo=bar')!; + expect(m.params.id).toBe('42?key=value&foo=bar'); + }); +}); diff --git a/packages/router/test/e2e/param-naming.test.ts b/packages/router/test/e2e/param-naming.test.ts new file mode 100644 index 0000000..c8e2953 --- /dev/null +++ b/packages/router/test/e2e/param-naming.test.ts @@ -0,0 +1,57 @@ +import { describe, it, expect } from 'bun:test'; + +import { Router } from '../../index'; +import { RouterErrorKind } from '../../src/types'; +import { firstBuildIssue } from '../test-utils'; + +describe('parameter name grammar', () => { + it('accepts snake_case and camelCase names', () => { + const r = new Router(); + r.add('GET', '/u/:user_id', 1); + r.add('GET', '/p/:postTitle', 2); + r.add('GET', '/v/:v1_beta', 3); + r.build(); + + expect(r.match('GET', '/u/42')?.params.user_id).toBe('42'); + expect(r.match('GET', '/p/hello')?.params.postTitle).toBe('hello'); + expect(r.match('GET', '/v/1')?.params.v1_beta).toBe('1'); + }); + + it('rejects kebab-case (hyphen is outside the name grammar)', () => { + const r = new Router(); + r.add('GET', '/:user-id', 1); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(RouterErrorKind.RouteParse); + expect(issue.message).toMatch(/Only alphanumeric characters and underscores/); + }); + + it('rejects Unicode names — param-name grammar rejects non-ASCII first character', () => { + const r = new Router(); + r.add('GET', '/:사용자ID', 1); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(RouterErrorKind.RouteParse); + }); + + it('rejects names starting with a digit', () => { + const r = new Router(); + r.add('GET', '/:123id', 1); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(RouterErrorKind.RouteParse); + expect(issue.message).toMatch(/must start with a letter/); + }); + + it('rejects names starting with an underscore', () => { + const r = new Router(); + r.add('GET', '/:_id', 1); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(RouterErrorKind.RouteParse); + expect(issue.message).toMatch(/must start with a letter/); + }); + + it('rejects names with embedded whitespace (caught by the path-grammar gate)', () => { + const r = new Router(); + r.add('GET', '/:user id', 1); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(RouterErrorKind.PathInvalidPchar); + }); +}); diff --git a/packages/router/test/e2e/perf-guard.test.ts b/packages/router/test/e2e/perf-guard.test.ts new file mode 100644 index 0000000..f551953 --- /dev/null +++ b/packages/router/test/e2e/perf-guard.test.ts @@ -0,0 +1,39 @@ +import { describe, expect, it } from 'bun:test'; + +import { Router } from '../../src/router'; +import { MatchSource } from '../../src/types'; +import { getRegistrationSnapshot } from '../test-utils'; + +describe('performance guard invariants', () => { + it('optional expansions share one handler index across all expansion variants', () => { + const r = new Router(); + r.add('GET', '/items/:id?', 'handler'); + r.build(); + + const snapshot = getRegistrationSnapshot(r); + + expect(snapshot.handlers.length).toBe(1); + const slab = snapshot.terminalSlab; + const terminals = slab.length / 3; + expect(terminals).toBeGreaterThanOrEqual(1); + for (let t = 0; t < terminals; t++) { + expect(slab[t * 3]).toBe(0); + } + }); + + it('high-cardinality dynamic hit cache evicts old entries and preserves recent entries', () => { + const r = new Router({ cacheSize: 8 }); + r.add('GET', '/users/:id', 'user'); + r.build(); + + const first = r.match('GET', '/users/0'); + expect(first?.meta.source).toBe(MatchSource.Dynamic); + + for (let i = 1; i <= 32; i++) { + expect(r.match('GET', `/users/${i}`)?.value).toBe('user'); + } + + expect(r.match('GET', '/users/32')?.meta.source).toBe(MatchSource.Cache); + expect(r.match('GET', '/users/0')?.meta.source).toBe(MatchSource.Dynamic); + }); +}); diff --git a/packages/router/test/e2e/public-api-contract.test.ts b/packages/router/test/e2e/public-api-contract.test.ts new file mode 100644 index 0000000..4e0c5e0 --- /dev/null +++ b/packages/router/test/e2e/public-api-contract.test.ts @@ -0,0 +1,30 @@ +import { test, expect } from 'bun:test'; + +import * as PublicAPI from '../../index'; +import { RouterErrorKind } from '../../src/types'; + +test('public API surface (value side) — exactly Router + RouterError', () => { + const exports = Object.keys(PublicAPI).sort(); + + expect(exports).toEqual(['MatchSource', 'Router', 'RouterError', 'RouterErrorKind']); +}); + +test('public API surface — Router is constructable', () => { + const r = new PublicAPI.Router(); + expect(r).toBeInstanceOf(PublicAPI.Router); +}); + +test('public API surface — RouterError is the thrown error type', () => { + const r = new PublicAPI.Router(); + r.build(); + + let thrown: unknown = null; + try { + r.add('GET', '/x', 'x'); + } catch (e) { + thrown = e; + } + + expect(thrown).toBeInstanceOf(PublicAPI.RouterError); + expect((thrown as PublicAPI.RouterError).data.kind).toBe(RouterErrorKind.RouterSealed); +}); diff --git a/packages/router/test/e2e/root-edge-cases.test.ts b/packages/router/test/e2e/root-edge-cases.test.ts new file mode 100644 index 0000000..7fbb24a --- /dev/null +++ b/packages/router/test/e2e/root-edge-cases.test.ts @@ -0,0 +1,238 @@ +import { describe, expect, it } from 'bun:test'; + +import { RouterError } from '../../src/error'; +import { Router } from '../../src/router'; +import { MatchSource } from '../../src/types'; + +describe('optional param at root matches /', () => { + it('/:id? matches / with id absent', () => { + const r = new Router({ omitMissingOptional: true }); + r.add('GET', '/:id?', 'opt'); + r.build(); + + const m = r.match('GET', '/'); + + expect(m).not.toBeNull(); + expect(m!.value).toBe('opt'); + expect('id' in m!.params).toBe(false); + }); + + it('/:id? matches /foo with id captured', () => { + const r = new Router(); + r.add('GET', '/:id?', 'opt'); + r.build(); + + const m = r.match('GET', '/foo'); + + expect(m).not.toBeNull(); + expect(m!.params.id).toBe('foo'); + }); + + it('/:id? + set-undefined behavior at root', () => { + const r = new Router({ omitMissingOptional: false }); + r.add('GET', '/:id?', 'opt'); + r.build(); + + const m = r.match('GET', '/'); + + expect(m).not.toBeNull(); + expect(m!.params.id).toBeUndefined(); + expect('id' in m!.params).toBe(true); + }); + + it('multi-segment /a/:b? still works at the inner level', () => { + const r = new Router(); + r.add('GET', '/a/:b?', 'opt'); + r.build(); + + expect(r.match('GET', '/a')!.value).toBe('opt'); + expect(r.match('GET', '/a/x')!.params.b).toBe('x'); + }); +}); + +describe('star wildcard at root matches /', () => { + it('/*p captures empty string when URL is /', () => { + const r = new Router(); + r.add('GET', '/*p', 'wild'); + r.build(); + + const m = r.match('GET', '/'); + + expect(m).not.toBeNull(); + expect(m!.value).toBe('wild'); + expect(m!.params.p).toBe(''); + }); + + it('/*p captures suffix on non-root URLs', () => { + const r = new Router(); + r.add('GET', '/*p', 'wild'); + r.build(); + + expect(r.match('GET', '/a')!.params.p).toBe('a'); + expect(r.match('GET', '/a/b/c')!.params.p).toBe('a/b/c'); + }); + + it('/* (anonymous wildcard) also matches /', () => { + const r = new Router(); + r.add('GET', '/*', 'wild'); + r.build(); + + const m = r.match('GET', '/'); + + expect(m).not.toBeNull(); + expect((m!.params as Record)['*']).toBe(''); + }); + + it('multi-wildcard at root /*p+ does NOT match /', () => { + const r = new Router(); + r.add('GET', '/*p+', 'multi'); + r.build(); + + expect(r.match('GET', '/')).toBeNull(); + expect(r.match('GET', '/a')!.params.p).toBe('a'); + }); +}); + +describe('param-name validation', () => { + it('rejects `:a:b` (colon inside name) — usually means two consecutive params', () => { + const r = new Router(); + + r.add('GET', '/:a:b', 'x'); + expect(() => r.build()).toThrow(RouterError); + }); + + it('rejects asterisk in param name', () => { + const r = new Router(); + + r.add('GET', '/:a*x', 'x'); + expect(() => r.build()).toThrow(RouterError); + }); + + it('treats `/` after a param as a segment boundary, not part of the name', () => { + const r = new Router(); + r.add('GET', '/:a/b/c', 'val'); + r.build(); + + expect(r.match('GET', '/x/b/c')!.value).toBe('val'); + expect(r.match('GET', '/x/b/c')!.params.a).toBe('x'); + }); + + it('rejects hyphen in param name', () => { + const r = new Router(); + r.add('GET', '/users/:user-id', 'h'); + expect(() => r.build()).toThrow(); + }); + + it('accepts underscore and digits in param name', () => { + const r = new Router(); + r.add('GET', '/x/:v2_underscore', 'u'); + r.build(); + + const got = r.match('GET', '/x/sample-value'); + expect(got).not.toBeNull(); + expect(got!.value).toBe('u'); + expect(got!.params.v2_underscore).toBe('sample-value'); + }); + + it('rejects names starting with underscore', () => { + const r = new Router(); + r.add('GET', '/x/:_id', 'u'); + expect(() => r.build()).toThrow(); + }); + + it('rejects metacharacters in wildcard name', () => { + const r = new Router(); + + r.add('GET', '/files/*p{\\w+}', 'wreg'); + expect(() => r.build()).toThrow(RouterError); + }); + + it('rejects metacharacters in :name+ multi-wildcard form', () => { + const r = new Router(); + + r.add('GET', '/files/:p(*+', 'invalid'); + expect(() => r.build()).toThrow(RouterError); + }); + + it('rejects metacharacters in :name* star-wildcard form', () => { + const r = new Router(); + + r.add('GET', '/files/:p:other*', 'invalid'); + expect(() => r.build()).toThrow(RouterError); + }); +}); + +describe('handler value with falsy/undefined values', () => { + it('static route with handler value === undefined returns MatchOutput, not null', () => { + const r = new Router(); + r.add('GET', '/x', undefined); + r.build(); + + const m = r.match('GET', '/x'); + + expect(m).not.toBeNull(); + expect(m!.value).toBeUndefined(); + expect(m!.meta.source).toBe(MatchSource.Static); + }); + + it('static route with handler value === null returns MatchOutput', () => { + const r = new Router(); + r.add('GET', '/x', null); + r.build(); + + const m = r.match('GET', '/x'); + + expect(m).not.toBeNull(); + expect(m!.value).toBeNull(); + }); + + it('re-registering a static path with undefined still throws route-duplicate', () => { + const r = new Router(); + r.add('GET', '/x', undefined); + r.add('GET', '/x', 'something'); + + expect(() => r.build()).toThrow(RouterError); + }); + + it('handler value === false / 0 / "" all preserved via static MatchOutput', () => { + type Falsy = false | 0 | ''; + const r = new Router(); + r.add('GET', '/false', false as Falsy); + r.add('GET', '/zero', 0 as Falsy); + r.add('GET', '/empty', '' as Falsy); + r.build(); + + expect(r.match('GET', '/false')!.value).toBe(false); + expect(r.match('GET', '/zero')!.value).toBe(0); + expect(r.match('GET', '/empty')!.value).toBe(''); + }); +}); + +describe('param immediately followed by *star wildcard (empty-tail capture)', () => { + it('/:p/*rest matches a single segment with empty rest', () => { + const r = new Router(); + r.add('GET', '/:p/*rest', 1); + r.build(); + + const m = r.match('GET', '/x'); + expect(m).not.toBeNull(); + expect(m!.params).toEqual({ p: 'x', rest: '' }); + }); + + it('/:p/*rest captures the tail when present', () => { + const r = new Router(); + r.add('GET', '/:p/*rest', 1); + r.build(); + + expect(r.match('GET', '/x/y/z')!.params).toEqual({ p: 'x', rest: 'y/z' }); + }); + + it('/:p(\\d+)/*rest honors the param tester on the empty-tail case', () => { + const r = new Router(); + r.add('GET', '/:p(\\d+)/*rest', 1); + r.build(); + + expect(r.match('GET', '/5')!.params).toEqual({ p: '5', rest: '' }); + expect(r.match('GET', '/abc')).toBeNull(); + }); +}); diff --git a/packages/router/test/e2e/router-api.property.test.ts b/packages/router/test/e2e/router-api.property.test.ts new file mode 100644 index 0000000..6dfc2d7 --- /dev/null +++ b/packages/router/test/e2e/router-api.property.test.ts @@ -0,0 +1,242 @@ +import { describe, it, expect } from 'bun:test'; +import * as fc from 'fast-check'; + +import type { MatchOutput } from '../../index'; + +import { Router, RouterError } from '../../index'; + +const URL_SAFE_CHARS = 'abcdefghijklmnopqrstuvwxyz0123456789-'.split(''); +const ALPHA_CHARS = 'abcdefghijklmnopqrstuvwxyz'.split(''); +const ALPHANUM_CHARS = 'abcdefghijklmnopqrstuvwxyz0123456789'.split(''); + +const segmentArb = fc + .array(fc.constantFrom(...URL_SAFE_CHARS), { minLength: 1, maxLength: 20 }) + .map(chars => chars.join('')) + .filter(s => /^[a-z]/.test(s)); + +const staticPathArb = fc.array(segmentArb, { minLength: 1, maxLength: 5 }).map(segments => '/' + segments.join('/')); + +const methodArb = fc.constantFrom( + 'GET' as const, + 'POST' as const, + 'PUT' as const, + 'DELETE' as const, + 'PATCH' as const, + 'HEAD' as const, + 'OPTIONS' as const, +); + +const paramNameArb = fc.array(fc.constantFrom(...ALPHA_CHARS), { minLength: 2, maxLength: 10 }).map(chars => chars.join('')); + +const paramValueArb = fc.array(fc.constantFrom(...ALPHANUM_CHARS), { minLength: 1, maxLength: 20 }).map(chars => chars.join('')); + +type HttpMethod = 'GET' | 'POST' | 'PUT' | 'DELETE' | 'PATCH' | 'HEAD' | 'OPTIONS'; + +function dedupeRoutes( + routes: ReadonlyArray, +): Array<{ method: HttpMethod; path: string; value: number }> { + const seen = new Set(); + const uniqueRoutes: Array<{ method: HttpMethod; path: string; value: number }> = []; + for (const [method, path] of routes) { + const key = `${method}:${path}`; + if (!seen.has(key)) { + seen.add(key); + uniqueRoutes.push({ method, path, value: uniqueRoutes.length }); + } + } + return uniqueRoutes; +} + +function expectMatchValue(result: MatchOutput | null, value: T): void { + expect(result).not.toBeNull(); + const m = result!; + expect(m.value).toBe(value); +} + +function expectMatchParams(result: MatchOutput | null, paramNames: string[], paramValues: string[]): void { + expect(result).not.toBeNull(); + const m = result!; + expect(m.value).toBe('handler'); + for (let i = 0; i < paramNames.length; i++) { + expect(m.params[paramNames[i]!]).toBe(paramValues[i]); + } +} + +function expectIdenticalMatches(results: Array | null>): void { + const first = results[0]; + expect(first).not.toBeNull(); + for (let i = 1; i < results.length; i++) { + const current = results[i]; + expect(current).not.toBeNull(); + expect(current!.value).toBe(first!.value); + expect(current!.params).toEqual(first!.params); + } +} + +function expectFuzzMatchShape(result: MatchOutput | null): void { + const checks = result === null ? [] : [result]; + for (const m of checks) { + expect(m.value).toBeDefined(); + expect(m.params).toBeDefined(); + expect(m.meta).toBeDefined(); + } +} + +describe('Router — property-based tests', () => { + describe('round-trip invariant', () => { + it('any route added via add() -> build() -> match() returns the registered value', () => { + fc.assert( + fc.property(fc.array(fc.tuple(methodArb, staticPathArb), { minLength: 1, maxLength: 20 }), routes => { + const uniqueRoutes = dedupeRoutes(routes); + + const router = new Router(); + + for (const { method, path, value } of uniqueRoutes) { + router.add(method, path, value); + } + + router.build(); + + for (const { method, path, value } of uniqueRoutes) { + expectMatchValue(router.match(method, path), value); + } + }), + { numRuns: 100 }, + ); + }); + }); + + describe('params accuracy invariant', () => { + it('match() result params contain the correct extracted values for parametric routes', () => { + fc.assert( + fc.property( + fc + .uniqueArray(paramNameArb, { minLength: 1, maxLength: 3, comparator: 'SameValue' }) + .chain(paramNames => + fc.tuple( + fc.constant(paramNames), + fc.tuple(...paramNames.map(() => paramValueArb)), + fc.array(segmentArb, { minLength: 0, maxLength: 2 }), + ), + ), + ([paramNames, paramValues, prefixSegments]) => { + const templateParts = [...prefixSegments, ...paramNames.map(n => `:${n}`)]; + const template = '/' + templateParts.join('/'); + + const concreteParts = [...prefixSegments, ...paramValues]; + const concretePath = '/' + concreteParts.join('/'); + + const router = new Router(); + router.add('GET', template, 'handler'); + router.build(); + + const result = router.match('GET', concretePath); + expectMatchParams(result, paramNames, paramValues); + }, + ), + { numRuns: 100 }, + ); + }); + }); + + describe('idempotency invariant', () => { + it('matching the same path N times returns identical results', () => { + fc.assert( + fc.property(methodArb, staticPathArb, (method, path) => { + const router = new Router(); + router.add(method, path, 'stable-handler'); + router.build(); + + const results: Array | null> = []; + + for (let i = 0; i < 5; i++) { + const result = router.match(method, path); + results.push(result); + } + + expectIdenticalMatches(results); + }), + { numRuns: 100 }, + ); + }); + + it('matching the same parametric path N times returns identical results', () => { + fc.assert( + fc.property(paramValueArb, paramValue => { + const router = new Router(); + router.add('GET', '/users/:id', 'user-handler'); + router.build(); + + const concretePath = `/users/${paramValue}`; + const results: Array | null> = []; + + for (let i = 0; i < 5; i++) { + const result = router.match('GET', concretePath); + results.push(result); + } + + expectIdenticalMatches(results); + }), + { numRuns: 100 }, + ); + }); + }); + + describe('no-crash fuzz invariant', () => { + it('any arbitrary string passed to match() does not crash', () => { + const router = new Router(); + router.add('GET', '/users', 'users'); + router.add('GET', '/users/:id', 'user'); + router.add('GET', '/files/*path', 'files'); + router.add('POST', '/data', 'data'); + router.build(); + + fc.assert( + fc.property(fc.string({ unit: 'grapheme', minLength: 0, maxLength: 500 }), arbitraryPath => { + try { + expectFuzzMatchShape(router.match('GET', arbitraryPath)); + } catch (e) { + expect(e).toBeInstanceOf(RouterError); + const err = e as RouterError; + expect(typeof err.data.kind).toBe('string'); + expect(typeof err.data.message).toBe('string'); + } + }), + { numRuns: 100 }, + ); + }); + + it('arbitrary strings with special characters never cause unhandled exceptions', () => { + const router = new Router(); + router.add('GET', '/api/:version/resource', 'resource'); + router.add('GET', '/static/file', 'static'); + router.build(); + + fc.assert( + fc.property( + fc.oneof( + fc.string({ unit: 'grapheme', maxLength: 200 }).map(s => '/' + encodeURIComponent(s)), + fc + .array(fc.string({ unit: 'grapheme', minLength: 0, maxLength: 50 }), { minLength: 1, maxLength: 10 }) + .map(parts => '/' + parts.join('/')), + fc + .array(fc.constantFrom('a', '/', ':', '*', '.', '-', '%', '2', 'F'), { + minLength: 100, + maxLength: 500, + }) + .map(chars => chars.join('')), + fc.string({ minLength: 1, maxLength: 200 }), + ), + fuzzPath => { + try { + router.match('GET', fuzzPath); + } catch (e) { + expect(e).toBeInstanceOf(RouterError); + } + }, + ), + { numRuns: 100 }, + ); + }); + }); +}); diff --git a/packages/router/test/router.test.ts b/packages/router/test/e2e/router-api.test.ts similarity index 75% rename from packages/router/test/router.test.ts rename to packages/router/test/e2e/router-api.test.ts index 0eb6286..318bb5b 100644 --- a/packages/router/test/router.test.ts +++ b/packages/router/test/e2e/router-api.test.ts @@ -1,24 +1,11 @@ -import { describe, it, expect } from 'bun:test'; -import type { MatchOutput } from '../src/types'; +import { describe, expect, it } from 'bun:test'; -import { Router } from '../src/router'; -import { RouterError } from '../src/error'; - -// ── Helpers ── - -function catchRouterError(fn: () => void): RouterError { - try { - fn(); - } catch (e) { - expect(e).toBeInstanceOf(RouterError); - return e as RouterError; - } - throw new Error('Expected RouterError to be thrown'); -} +import { RouterError } from '../../src/error'; +import { Router } from '../../src/router'; +import { MatchSource, RouterErrorKind } from '../../src/types'; +import { catchRouterError, expectErrorKind } from '../test-utils'; describe('Router', () => { - // ── HP: Happy Path (21 tests) ── - describe('happy path', () => { it('should match static route returning value and empty params', () => { const router = new Router(); @@ -42,7 +29,7 @@ describe('Router', () => { expect(post).not.toBeNull(); }); - it('should register all 7 standard methods when add called with \'*\'', () => { + it("should register all 7 standard methods when add called with '*'", () => { const router = new Router(); router.add('*', '/all', 'all'); router.build(); @@ -56,7 +43,7 @@ describe('Router', () => { it('should register and match all routes via addAll', () => { const router = new Router(); - const entries: Array<[any, string, string]> = [ + const entries: Array<[string, string, string]> = [ ['GET', '/a', 'a'], ['POST', '/b', 'b'], ]; @@ -73,18 +60,17 @@ describe('Router', () => { it('should return void for addAll with empty array', () => { const router = new Router(); - // addAll returns void — no throw means success router.addAll([]); }); - it('should return source=\'static\' for static route match', () => { + it("should return source='static' for static route match", () => { const router = new Router(); router.add('GET', '/static', 'val'); router.build(); const result = router.match('GET', '/static'); expect(result).not.toBeNull(); - expect(result!.meta.source).toBe('static'); + expect(result!.meta.source).toBe(MatchSource.Static); }); it('should extract params from dynamic :param route', () => { @@ -152,14 +138,14 @@ describe('Router', () => { expect(result).toBe(router); }); - it('should return source=\'dynamic\' for dynamic route match', () => { + it("should return source='dynamic' for dynamic route match", () => { const router = new Router(); router.add('GET', '/users/:id', 'user'); router.build(); const result = router.match('GET', '/users/1'); expect(result).not.toBeNull(); - expect(result!.meta.source).toBe('dynamic'); + expect(result!.meta.source).toBe(MatchSource.Dynamic); }); it('should not throw for valid add', () => { @@ -183,9 +169,9 @@ describe('Router', () => { expect(result!.params.filepath).toBe('a/b/c'); }); - it('should match multi-segment dynamic param (:file+)', () => { + it('should match multi-segment dynamic param (*file+)', () => { const router = new Router(); - router.add('GET', '/docs/:file+', 'docs'); + router.add('GET', '/docs/*file+', 'docs'); router.build(); const result = router.match('GET', '/docs/a/b'); @@ -205,7 +191,7 @@ describe('Router', () => { }); it('should omit optional param from params when absent with omit behavior', () => { - const router = new Router({ optionalParamBehavior: 'omit' }); + const router = new Router({ omitMissingOptional: true }); router.add('GET', '/users/:id?', 'user'); router.build(); @@ -215,36 +201,32 @@ describe('Router', () => { expect('id' in result!.params).toBe(false); }); - it('should match regex-constrained param (:id{\\d+})', () => { + it('should match regex-constrained param (:id(\\d+))', () => { const router = new Router(); - router.add('GET', '/users/:id{\\d+}', 'user'); + router.add('GET', '/users/:id(\\d+)', 'user'); router.build(); - // Should match numeric const numeric = router.match('GET', '/users/123'); expect(numeric).not.toBeNull(); expect(numeric!.params.id).toBe('123'); - // Should not match non-numeric const alpha = router.match('GET', '/users/abc'); expect(alpha).toBeNull(); }); it('should register and match custom HTTP method', () => { const router = new Router(); - router.add('PURGE' as any, '/cache', 'purge'); + router.add('PURGE', '/cache', 'purge'); router.build(); - const result = router.match('PURGE' as any, '/cache'); + const result = router.match('PURGE', '/cache'); expect(result).not.toBeNull(); expect(result!.value).toBe('purge'); }); }); - // ── ED: Edge Cases (10 tests) ── - describe('edge cases', () => { - it('should match root path \'/\'', () => { + it("should match root path '/'", () => { const router = new Router(); router.add('GET', '/', 'root'); router.build(); @@ -262,8 +244,8 @@ describe('Router', () => { expect(result).toBeNull(); }); - it('should store and return falsy values (0, \'\', false)', () => { - const router = new Router(); + it("should store and return falsy values (0, '', false)", () => { + const router = new Router(); router.add('GET', '/zero', 0); router.add('GET', '/empty', ''); router.add('GET', '/false', false); @@ -299,7 +281,7 @@ describe('Router', () => { expect(result).not.toBeUndefined(); }); - it('should handle single-character static path \'/a\'', () => { + it("should handle single-character static path '/a'", () => { const router = new Router(); router.add('GET', '/a', 'a-val'); router.build(); @@ -343,77 +325,62 @@ describe('Router', () => { expect(result!.params.id).toBe('hello-world_v2.0'); }); - it('should strip query string from match path', () => { + it('does not strip query string from match path (framework concern)', () => { const router = new Router(); router.add('GET', '/hello', 'world'); router.build(); - const result = router.match('GET', '/hello?foo=bar&baz=1'); - expect(result).not.toBeNull(); - expect(result!.value).toBe('world'); + expect(router.match('GET', '/hello?foo=bar&baz=1')).toBeNull(); + expect(router.match('GET', '/hello')!.value).toBe('world'); }); }); - // ── ST: State Transition (11 tests) ── - describe('state transition', () => { it('should complete standard lifecycle: construct → add → build → match', () => { const router = new Router(); - // Phase 1: not built yet → match throws - expect(() => router.match('GET', '/x')).toThrow(RouterError); + expect(router.match('GET', '/x')).toBeNull(); - // Phase 2: add router.add('GET', '/x', 'x'); - // Phase 3: build const built = router.build(); expect(built).toBe(router); - // Phase 4: match succeeds const matchAfter = router.match('GET', '/x'); expect(matchAfter).not.toBeNull(); - // Phase 5: add after seal throws expect(() => router.add('POST', '/y', 'y')).toThrow(RouterError); }); - it('should allow adding valid route after previous add error', () => { + it('should report invalid and valid deferred routes together at build time', () => { const router = new Router(); router.add('GET', '/users/:id', 'user'); - - // Conflict - expect(() => router.add('GET', '/users/*', 'wildcard')).toThrow(RouterError); - - // Should not be sealed + router.add('GET', '/users/*', 'wildcard'); router.add('POST', '/posts', 'posts'); - router.build(); - const postsMatch = router.match('POST', '/posts'); - expect(postsMatch).not.toBeNull(); + expect(() => router.build()).toThrow(RouterError); + expect(router.match('POST', '/posts')).toBeNull(); }); - it('should allow multiple valid adds between invalid ones', () => { + it('should aggregate duplicates found between valid deferred routes', () => { const router = new Router(); router.add('GET', '/a', 'a'); - expect(() => router.add('GET', '/a', 'dup')).toThrow(RouterError); + router.add('GET', '/a', 'dup'); router.add('GET', '/b', 'b'); - expect(() => router.add('GET', '/b', 'dup2')).toThrow(RouterError); + router.add('GET', '/b', 'dup2'); router.add('GET', '/c', 'c'); - router.build(); - - expect(router.match('GET', '/a')).not.toBeNull(); - expect(router.match('GET', '/b')).not.toBeNull(); - expect(router.match('GET', '/c')).not.toBeNull(); + const err = catchRouterError(() => router.build()); + const data = expectErrorKind(err.data, RouterErrorKind.RouteValidation); + expect(data.errors).toHaveLength(2); }); - it('should succeed match after recovering from not-built error', () => { + it('should succeed match after calling match before build (returns null, not error)', () => { const router = new Router(); router.add('GET', '/x', 'x'); - expect(() => router.match('GET', '/x')).toThrow(RouterError); + expect(router.match('GET', '/x')).toBeNull(); router.build(); @@ -425,7 +392,7 @@ describe('Router', () => { const router = new Router(); router.add('GET', '/x', 'x'); - expect(() => router.match('GET', '/x')).toThrow(RouterError); + expect(router.match('GET', '/x')).toBeNull(); router.build(); @@ -437,14 +404,12 @@ describe('Router', () => { const router = new Router(); router.add('GET', '/x', 'x'); - // Before build: can add router.add('GET', '/y', 'y'); router.build(); - // After build: cannot add const err = catchRouterError(() => router.add('GET', '/z', 'z')); - expect(err.data.kind).toBe('router-sealed'); + expect(err.data.kind).toBe(RouterErrorKind.RouterSealed); }); it('should return sealed err for add after build but allow match', () => { @@ -453,7 +418,7 @@ describe('Router', () => { router.build(); const err = catchRouterError(() => router.add('POST', '/new', 'new')); - expect(err.data.kind).toBe('router-sealed'); + expect(err.data.kind).toBe(RouterErrorKind.RouterSealed); const matchResult = router.match('GET', '/ok'); expect(matchResult).not.toBeNull(); @@ -485,26 +450,19 @@ describe('Router', () => { expect(result).toBeNull(); }); - it('should work after addAll partial success then add then build', () => { + it('should report addAll duplicate during build and publish no partial snapshot', () => { const router = new Router(); router.add('GET', '/base', 'base'); - const err = catchRouterError(() => router.addAll([ + router.addAll([ ['POST', '/ok', 'ok'], ['GET', '/base', 'dup'], - ])); - expect(err.data.registeredCount).toBe(1); - - // Router not sealed after addAll error + ]); router.add('PUT', '/another', 'another'); - router.build(); - const base = router.match('GET', '/base'); - const ok = router.match('POST', '/ok'); - const another = router.match('PUT', '/another'); - expect(base).not.toBeNull(); - expect(ok).not.toBeNull(); - expect(another).not.toBeNull(); + expect(() => router.build()).toThrow(RouterError); + expect(router.match('POST', '/ok')).toBeNull(); + expect(router.match('PUT', '/another')).toBeNull(); }); it('should reject add after build even for new methods', () => { @@ -513,12 +471,10 @@ describe('Router', () => { router.build(); const err = catchRouterError(() => router.add('PATCH', '/x', 'patch')); - expect(err.data.kind).toBe('router-sealed'); + expect(err.data.kind).toBe(RouterErrorKind.RouterSealed); }); }); - // ── ID: Idempotency (10 tests) ── - describe('idempotency', () => { it('should return same this when build called multiple times', () => { const router = new Router(); @@ -558,11 +514,12 @@ describe('Router', () => { expect(r2).toBeNull(); }); - it('should not be idempotent for add: first ok second throws on duplicate', () => { + it('should allow duplicate add calls but reject them during build', () => { const router = new Router(); router.add('GET', '/x', 'x'); - expect(() => router.add('GET', '/x', 'x')).toThrow(RouterError); + router.add('GET', '/x', 'x'); + expect(() => router.build()).toThrow(RouterError); }); it('should consistently throw sealed error across repeated add attempts', () => { @@ -572,8 +529,8 @@ describe('Router', () => { const e1 = catchRouterError(() => router.add('GET', '/a', 'a')); const e2 = catchRouterError(() => router.add('POST', '/b', 'b')); - expect(e1.data.kind).toBe('router-sealed'); - expect(e2.data.kind).toBe('router-sealed'); + expect(e1.data.kind).toBe(RouterErrorKind.RouterSealed); + expect(e2.data.kind).toBe(RouterErrorKind.RouterSealed); }); it('should return consistent params across repeated dynamic matches', () => { @@ -602,13 +559,11 @@ describe('Router', () => { } }); - it('should match identically via \'*\' and individual method add', () => { - // Router 1: via '*' + it("should match identically via '*' and individual method add", () => { const r1 = new Router(); r1.add('*', '/path', 'val'); r1.build(); - // Router 2: via individual methods const r2 = new Router(); for (const m of ['GET', 'POST', 'PUT', 'PATCH', 'DELETE', 'OPTIONS', 'HEAD'] as const) { r2.add(m, '/path', 'val'); @@ -624,14 +579,15 @@ describe('Router', () => { } }); - it('should return identical err kind for same invalid operation repeated', () => { + it('should aggregate repeated duplicate operations with identical issue kinds', () => { const router = new Router(); router.add('GET', '/a', 'a'); + router.add('GET', '/a', 'dup1'); + router.add('GET', '/a', 'dup2'); - const e1 = catchRouterError(() => router.add('GET', '/a', 'dup1')); - const e2 = catchRouterError(() => router.add('GET', '/a', 'dup2')); - - expect(e1.data.kind).toBe(e2.data.kind); + const err = catchRouterError(() => router.build()); + const data = expectErrorKind(err.data, RouterErrorKind.RouteValidation); + expect(data.errors[0]?.error.kind).toBe(data.errors[1]?.error.kind); }); it('should return stable null for different non-existent paths', () => { @@ -647,26 +603,21 @@ describe('Router', () => { }); }); - // ── OR: Ordering (8 tests) ── - describe('ordering', () => { it('should check static → cache → dynamic in match priority', () => { - const router = new Router({ enableCache: true }); + const router = new Router({}); router.add('GET', '/static', 'static-val'); router.add('GET', '/users/:id', 'dynamic-val'); router.build(); - // Static → source='static' const staticResult = router.match('GET', '/static'); - expect(staticResult!.meta.source).toBe('static'); + expect(staticResult!.meta.source).toBe(MatchSource.Static); - // Dynamic first → source='dynamic' const dynamicResult = router.match('GET', '/users/1'); - expect(dynamicResult!.meta.source).toBe('dynamic'); + expect(dynamicResult!.meta.source).toBe(MatchSource.Dynamic); - // Dynamic second → source='cache' const cachedResult = router.match('GET', '/users/1'); - expect(cachedResult!.meta.source).toBe('cache'); + expect(cachedResult!.meta.source).toBe(MatchSource.Cache); }); it('should register both methods in array and not others', () => { @@ -679,7 +630,6 @@ describe('Router', () => { expect(get).not.toBeNull(); expect(post).not.toBeNull(); - // PUT has no routes registered → null (standard methods always have codes) expect(router.match('PUT', '/both')).toBeNull(); }); @@ -714,23 +664,20 @@ describe('Router', () => { expect(get!.value).toBe('get-val'); }); - it('should process addAll entries sequentially respecting fail-fast', () => { + it('should process addAll entries sequentially and aggregate duplicate validation', () => { const router = new Router(); router.add('GET', '/dup', 'original'); - const err = catchRouterError(() => router.addAll([ + router.addAll([ ['POST', '/first', 'first'], ['PUT', '/second', 'second'], ['GET', '/dup', 'duplicate'], ['DELETE', '/third', 'third'], - ])); - - expect(err.data.registeredCount).toBe(2); + ]); - router.build(); - expect(router.match('POST', '/first')).not.toBeNull(); - expect(router.match('PUT', '/second')).not.toBeNull(); - // DELETE has no routes but is a standard method → null (not throw) + const err = catchRouterError(() => router.build()); + const data = expectErrorKind(err.data, RouterErrorKind.RouteValidation); + expect(data.errors[0]?.index).toBe(3); expect(router.match('DELETE', '/third')).toBeNull(); }); @@ -743,7 +690,7 @@ describe('Router', () => { const admin = router.match('GET', '/users/admin'); expect(admin).not.toBeNull(); expect(admin!.value).toBe('admin-page'); - expect(admin!.meta.source).toBe('static'); + expect(admin!.meta.source).toBe(MatchSource.Static); const user = router.match('GET', '/users/123'); expect(user).not.toBeNull(); @@ -763,7 +710,7 @@ describe('Router', () => { }); it('should differentiate cache entries by method for same path', () => { - const router = new Router({ enableCache: true }); + const router = new Router({}); router.add('GET', '/users/:id', 'get-user'); router.add('POST', '/users/:id', 'post-user'); router.build(); @@ -774,7 +721,6 @@ describe('Router', () => { expect(get!.value).toBe('get-user'); expect(post!.value).toBe('post-user'); - // Second calls → cached const get2 = router.match('GET', '/users/42'); const post2 = router.match('POST', '/users/42'); expect(get2!.value).toBe('get-user'); @@ -782,8 +728,6 @@ describe('Router', () => { }); }); - // ── NEW: ED / ST / ID / OR additions (10 tests) ── - describe('additional edge & state', () => { it('should return null when matching on router with zero routes', () => { const router = new Router(); @@ -804,7 +748,7 @@ describe('Router', () => { }); it('should single-decode %2520 to %20 without double decoding', () => { - const router = new Router({ decodeParams: true }); + const router = new Router(); router.add('GET', '/seg/:val', 'handler'); router.build(); @@ -813,60 +757,42 @@ describe('Router', () => { expect(result!.params.val).toBe('%20'); }); - it('should apply all defaults when multiple optional params are absent', () => { - const router = new Router({ optionalParamBehavior: 'setUndefined' }); - router.add('GET', '/items/:a?/:b?', 'handler'); + it('should apply default to absent optional param', () => { + const router = new Router({ omitMissingOptional: false }); + router.add('GET', '/items/:a?', 'handler'); router.build(); - // Both absent const r1 = router.match('GET', '/items'); expect(r1).not.toBeNull(); expect(r1!.value).toBe('handler'); + expect('a' in r1!.params).toBe(true); + expect(r1!.params.a).toBeUndefined(); - // One present, one absent → b is defaulted const r2 = router.match('GET', '/items/42'); expect(r2).not.toBeNull(); expect(r2!.params.a).toBe('42'); - expect('b' in r2!.params).toBe(true); - expect(r2!.params.b).toBeUndefined(); - - // Both present - const r3 = router.match('GET', '/items/42/99'); - expect(r3).not.toBeNull(); - expect(r3!.params.a).toBe('42'); - expect(r3!.params.b).toBe('99'); }); - it('should leave dead handler in array when add fails after handler push', () => { + it('should not publish dead handler when duplicate dynamic route fails build validation', () => { const router = new Router(); router.add('GET', '/users/:id', 'valid-handler'); + router.add('GET', '/users/:id', 'dead-handler'); - const err = catchRouterError(() => router.add('GET', '/users/:id', 'dead-handler')); - expect(err.data.kind).toBe('route-duplicate'); - - router.build(); - const match = router.match('GET', '/users/42'); - expect(match).not.toBeNull(); - expect(match!.value).toBe('valid-handler'); + expect(() => router.build()).toThrow(RouterError); + expect(router.match('GET', '/users/42')).toBeNull(); }); - it('should overwrite cached null entry when same path later matches a real route value', () => { - const router = new Router({ enableCache: true }); + it('repeated misses on the same path stay null and do not poison sibling routes', () => { + const router = new Router({}); router.add('GET', '/exists/:id', 'val'); router.build(); - // First match: path not found → null cached - const r1 = router.match('GET', '/nope/1'); - expect(r1).toBeNull(); - - // Second match: same path → still null (from cache, consistently) - const r2 = router.match('GET', '/nope/1'); - expect(r2).toBeNull(); + expect(router.match('GET', '/nope/1')).toBeNull(); + expect(router.match('GET', '/nope/1')).toBeNull(); - // Existing route still works (separate cache entry) - const r3 = router.match('GET', '/exists/42'); - expect(r3).not.toBeNull(); - expect(r3!.value).toBe('val'); + const hit = router.match('GET', '/exists/42'); + expect(hit).not.toBeNull(); + expect(hit!.value).toBe('val'); }); it('should return same handler reference identity across multiple matches', () => { diff --git a/packages/router/test/router-cache.test.ts b/packages/router/test/e2e/router-cache.test.ts similarity index 61% rename from packages/router/test/router-cache.test.ts rename to packages/router/test/e2e/router-cache.test.ts index ecc4d6f..8a6dd99 100644 --- a/packages/router/test/router-cache.test.ts +++ b/packages/router/test/e2e/router-cache.test.ts @@ -1,26 +1,27 @@ import { describe, it, expect } from 'bun:test'; -import { Router } from '../src/router'; +import { Router } from '../../src/router'; +import { MatchSource } from '../../src/types'; describe('Router cache', () => { - it('should use cache on second match when cache enabled (source=\'cache\')', () => { - const router = new Router({ enableCache: true }); + it("should use cache on second match when cache enabled (source='cache')", () => { + const router = new Router({}); router.add('GET', '/users/:id', 'user'); router.build(); const first = router.match('GET', '/users/42'); expect(first).not.toBeNull(); - expect(first!.meta.source).toBe('dynamic'); + expect(first!.meta.source).toBe(MatchSource.Dynamic); const second = router.match('GET', '/users/42'); expect(second).not.toBeNull(); - expect(second!.meta.source).toBe('cache'); + expect(second!.meta.source).toBe(MatchSource.Cache); expect(second!.value).toBe('user'); expect(second!.params.id).toBe('42'); }); it('should evict with cacheSize=1 and re-match as dynamic', () => { - const router = new Router({ enableCache: true, cacheSize: 1 }); + const router = new Router({ cacheSize: 1 }); router.add('GET', '/users/:id', 'user'); router.build(); @@ -29,11 +30,11 @@ describe('Router cache', () => { const third = router.match('GET', '/users/1'); expect(third).not.toBeNull(); - expect(third!.meta.source).toBe('dynamic'); + expect(third!.meta.source).toBe(MatchSource.Dynamic); }); it('should cache null on miss and return null from cache on next match', () => { - const router = new Router({ enableCache: true }); + const router = new Router({}); router.add('GET', '/exists', 'exists'); router.build(); @@ -44,15 +45,18 @@ describe('Router cache', () => { expect(miss2).toBeNull(); }); - it('should return cloned params from cache (not shared references)', () => { - const router = new Router({ enableCache: true }); + it('returns frozen params from cache; caller mutation is rejected', () => { + const router = new Router({}); router.add('GET', '/users/:id', 'user'); router.build(); const first = router.match('GET', '/users/1'); - if (first !== null) { - first.params.id = 'mutated'; - } + expect(first).not.toBeNull(); + expect(Object.isFrozen(first!.params)).toBe(true); + expect(() => { + 'use strict'; + (first!.params as Record).id = 'mutated'; + }).toThrow(TypeError); const second = router.match('GET', '/users/1'); expect(second).not.toBeNull(); @@ -60,7 +64,7 @@ describe('Router cache', () => { }); it('should differentiate cache entries by method for same path', () => { - const router = new Router({ enableCache: true }); + const router = new Router({}); router.add('GET', '/users/:id', 'get-user'); router.add('POST', '/users/:id', 'post-user'); router.build(); @@ -73,14 +77,14 @@ describe('Router cache', () => { expect(get).not.toBeNull(); expect(post).not.toBeNull(); - expect(get!.meta.source).toBe('cache'); + expect(get!.meta.source).toBe(MatchSource.Cache); expect(get!.value).toBe('get-user'); - expect(post!.meta.source).toBe('cache'); + expect(post!.meta.source).toBe(MatchSource.Cache); expect(post!.value).toBe('post-user'); }); it('should populate cache in match call order', () => { - const router = new Router({ enableCache: true }); + const router = new Router({}); router.add('GET', '/users/:id', 'user'); router.build(); @@ -90,36 +94,36 @@ describe('Router cache', () => { const cached1 = router.match('GET', '/users/1'); const cached2 = router.match('GET', '/users/2'); - expect(cached1!.meta.source).toBe('cache'); - expect(cached2!.meta.source).toBe('cache'); + expect(cached1!.meta.source).toBe(MatchSource.Cache); + expect(cached2!.meta.source).toBe(MatchSource.Cache); }); - it('should not cache when enableCache is not set (default)', () => { + it('should always cache dynamic matches (no toggle option)', () => { const router = new Router(); router.add('GET', '/users/:id', 'user'); router.build(); const first = router.match('GET', '/users/42'); - expect(first!.meta.source).toBe('dynamic'); + expect(first!.meta.source).toBe(MatchSource.Dynamic); const second = router.match('GET', '/users/42'); - expect(second!.meta.source).toBe('dynamic'); + expect(second!.meta.source).toBe(MatchSource.Cache); }); - it('should bypass cache for static route matches (static fast-path)', () => { - const router = new Router({ enableCache: true }); + it('should never route static lookups through the dynamic cache (static fast-path)', () => { + const router = new Router({}); router.add('GET', '/static', 'static-val'); router.build(); const first = router.match('GET', '/static'); const second = router.match('GET', '/static'); - expect(first!.meta.source).toBe('static'); - expect(second!.meta.source).toBe('static'); + expect(first!.meta.source).toBe(MatchSource.Static); + expect(second!.meta.source).toBe(MatchSource.Static); }); it('should evict entries via clock-sweep when cache is full', () => { - const router = new Router({ enableCache: true, cacheSize: 2 }); + const router = new Router({ cacheSize: 2 }); router.add('GET', '/users/:id', 'user'); router.build(); @@ -128,36 +132,36 @@ describe('Router cache', () => { router.match('GET', '/users/3'); const r3 = router.match('GET', '/users/3'); - expect(r3!.meta.source).toBe('cache'); + expect(r3!.meta.source).toBe(MatchSource.Cache); expect(r3!.params.id).toBe('3'); router.match('GET', '/users/4'); const r4 = router.match('GET', '/users/4'); - expect(r4!.meta.source).toBe('cache'); + expect(r4!.meta.source).toBe(MatchSource.Cache); expect(r4!.params.id).toBe('4'); }); it('should cache results independently per custom method', () => { - const router = new Router({ enableCache: true }); + const router = new Router({}); router.add('GET', '/users/:id', 'get-user'); - router.add('PURGE' as any, '/users/:id', 'purge-user'); + router.add('PURGE', '/users/:id', 'purge-user'); router.build(); router.match('GET', '/users/1'); const getCached = router.match('GET', '/users/1'); - router.match('PURGE' as any, '/users/1'); - const purgeCached = router.match('PURGE' as any, '/users/1'); + router.match('PURGE', '/users/1'); + const purgeCached = router.match('PURGE', '/users/1'); expect(getCached!.value).toBe('get-user'); - expect(getCached!.meta.source).toBe('cache'); + expect(getCached!.meta.source).toBe(MatchSource.Cache); expect(purgeCached!.value).toBe('purge-user'); - expect(purgeCached!.meta.source).toBe('cache'); + expect(purgeCached!.meta.source).toBe(MatchSource.Cache); }); it('should cache null miss entries independently per method', () => { - const router = new Router({ enableCache: true }); + const router = new Router({}); router.add('GET', '/exists', 'exists'); router.add('POST', '/exists', 'exists-post'); router.build(); @@ -175,7 +179,7 @@ describe('Router cache', () => { }); it('should maintain cache correctness after many evictions', () => { - const router = new Router({ enableCache: true, cacheSize: 3 }); + const router = new Router({ cacheSize: 3 }); router.add('GET', '/users/:id', 'user'); router.build(); @@ -187,7 +191,27 @@ describe('Router cache', () => { } const last = router.match('GET', '/users/9'); - expect(last!.meta.source).toBe('cache'); + expect(last!.meta.source).toBe(MatchSource.Cache); expect(last!.params.id).toBe('9'); }); + + it('cached params are frozen so mutation cannot poison later hits', () => { + const r = new Router(); + r.add('GET', '/users/:id', 'h'); + r.build(); + + const a = r.match('GET', '/users/42'); + expect(a).not.toBeNull(); + expect(a!.params.id).toBe('42'); + expect(Object.isFrozen(a!.params)).toBe(true); + + expect(() => { + 'use strict'; + a!.params.id = 'POISONED'; + }).toThrow(TypeError); + + const b = r.match('GET', '/users/42'); + expect(b).not.toBeNull(); + expect(b!.params.id).toBe('42'); + }); }); diff --git a/packages/router/test/e2e/router-concurrency.test.ts b/packages/router/test/e2e/router-concurrency.test.ts new file mode 100644 index 0000000..db97ab7 --- /dev/null +++ b/packages/router/test/e2e/router-concurrency.test.ts @@ -0,0 +1,124 @@ +import { describe, expect, it } from 'bun:test'; + +import { Router } from '../../src/router'; +import { expectMatch } from '../test-utils'; + +type InterleaveProbe = { path: string; value: string; paramKey: string; param: string }; + +const interleaveBuilders: ReadonlyArray<(i: number) => InterleaveProbe> = [ + i => ({ path: `/users/${i}`, value: 'user', paramKey: 'id', param: String(i) }), + i => ({ path: `/posts/slug-${i}`, value: 'post', paramKey: 'slug', param: `slug-${i}` }), + i => ({ path: `/files/${i}/tail`, value: 'file', paramKey: 'path', param: `${i}/tail` }), +]; + +function interleaveProbe(i: number): InterleaveProbe { + return interleaveBuilders[i % interleaveBuilders.length]!(i); +} + +async function interleavedMatch(r: Router, probe: InterleaveProbe): Promise<{ value: string; param: string }> { + await Promise.resolve(); + const m = expectMatch(r.match('GET', probe.path)); + return { value: m.value, param: m.params[probe.paramKey]! }; +} + +const staticDynamicBuilders: ReadonlyArray<{ path: (i: number) => string; value: string }> = [ + { path: () => '/health', value: 'static' }, + { path: i => `/users/${i}`, value: 'dynamic' }, +]; + +function staticDynamicProbe(i: number): { path: (i: number) => string; value: string } { + return staticDynamicBuilders[i % staticDynamicBuilders.length]!; +} + +async function staticDynamicMatch(r: Router, i: number): Promise { + await Promise.resolve(); + return expectMatch(r.match('GET', staticDynamicProbe(i).path(i))).value; +} + +describe('router is safe under concurrent async match() calls (cooperative)', () => { + it('handles 1000 interleaved Promise-wrapped match() calls without losing results', async () => { + const r = new Router(); + r.add('GET', '/users/:id', 'user'); + r.add('GET', '/posts/:slug', 'post'); + r.add('GET', '/files/*path', 'file'); + r.build(); + + const probes = Array.from({ length: 1000 }, (_, i) => interleaveProbe(i)); + const results = await Promise.all(probes.map(probe => interleavedMatch(r, probe))); + + for (let i = 0; i < results.length; i++) { + expect(results[i]!.value).toBe(probes[i]!.value); + expect(results[i]!.param).toBe(probes[i]!.param); + } + }); + + it('static and dynamic match() interleaved keep returning correct outputs', async () => { + const r = new Router(); + r.add('GET', '/health', 'static'); + r.add('GET', '/users/:id', 'dynamic'); + r.build(); + + const N = 500; + const out = await Promise.all(Array.from({ length: N }, (_, i) => staticDynamicMatch(r, i))); + + for (let i = 0; i < N; i++) { + expect(out[i]).toBe(staticDynamicProbe(i).value); + } + }); +}); + +describe('built router exposes a read-only contract', () => { + it('rejects further add()/addAll() after build() with router-sealed', () => { + const r = new Router(); + r.add('GET', '/x', 'x'); + r.build(); + expect(() => r.add('GET', '/y', 'y')).toThrow(); + expect(() => r.addAll([['POST', '/z', 'z']])).toThrow(); + }); + + it('a second build() returns the same router instance (idempotent)', () => { + const r = new Router(); + r.add('GET', '/x', 'x'); + const ret1 = r.build(); + const ret2 = r.build(); + expect(ret1).toBe(ret2); + }); + + it('static MatchOutput is the same frozen reference across repeat matches', () => { + const r = new Router(); + r.add('GET', '/health', 'h'); + r.build(); + const a = expectMatch(r.match('GET', '/health')); + const b = expectMatch(r.match('GET', '/health')); + expect(a).toBe(b); + expect(Object.isFrozen(a)).toBe(true); + }); + + it('dynamic MatchOutput.params is frozen — caller mutation throws', () => { + const r = new Router(); + r.add('GET', '/users/:id', 'u'); + r.build(); + const m = expectMatch(r.match('GET', '/users/42')); + expect(Object.isFrozen(m.params)).toBe(true); + expect(() => { + (m.params as Record)['injected'] = 'evil'; + }).toThrow(); + }); + + it('Router instance is frozen after build() — no field rewrites possible', () => { + const r = new Router(); + expect(Object.isFrozen(r)).toBe(false); + r.add('GET', '/x', 'x'); + r.build(); + expect(Object.isFrozen(r)).toBe(true); + }); +}); + +describe('non-contract: cross-isolate safety', () => { + it('documents that a single Router is single-isolate by design (no shared-state guarantee across workers)', () => { + const r = new Router(); + r.add('GET', '/x', 'x'); + r.build(); + expect(r.match('GET', '/x')?.value).toBe('x'); + }); +}); diff --git a/packages/router/test/e2e/router-errors.test.ts b/packages/router/test/e2e/router-errors.test.ts new file mode 100644 index 0000000..84612f8 --- /dev/null +++ b/packages/router/test/e2e/router-errors.test.ts @@ -0,0 +1,379 @@ +import { describe, it, expect } from 'bun:test'; + +import { MAX_OPTIONAL_SEGMENTS_PER_ROUTE } from '../../src/builder/route-expand'; +import { RouterError } from '../../src/error'; +import { Router } from '../../src/router'; +import { RouterErrorKind } from '../../src/types'; +import { catchRouterError, expectErrorKind, firstBuildIssue } from '../test-utils'; + +function isPutUnreachable(issue: { method: string; error: { kind: RouterErrorKind } }): boolean { + return issue.method === 'PUT' && issue.error.kind === RouterErrorKind.RouteUnreachable; +} + +function fillMethodsToLimit(router: Router): void { + for (let i = 0; i < 25; i++) { + router.add(`CUSTOM_${i}`, `/limit-${i}`, `limit-${i}`); + } +} + +describe('Router errors', () => { + it('should throw RouterError kind=RouterErrorKind.RouterSealed when add called after build', () => { + const router = new Router(); + router.add('GET', '/x', 'x'); + router.build(); + + const err = catchRouterError(() => router.add('GET', '/y', 'y')); + expect(err.data.kind).toBe(RouterErrorKind.RouterSealed); + expect(err.data.path).toBe('/y'); + expect(err.data.method).toBe('GET'); + }); + + it('should return null when match called before build', () => { + const router = new Router(); + router.add('GET', '/x', 'x'); + + expect(router.match('GET', '/x')).toBeNull(); + }); + + it('should throw for duplicate method+path (route-duplicate)', () => { + const router = new Router(); + router.add('GET', '/x', 'first'); + router.add('GET', '/x', 'second'); + + const issue = firstBuildIssue(router); + expect(issue.kind).toBe(RouterErrorKind.RouteDuplicate); + }); + + it('should throw for wildcard whose prefix already has a descendant terminal', () => { + const router = new Router(); + router.add('GET', '/users/:id', 'by-id'); + router.add('GET', '/users/*', 'by-wildcard'); + + const issue = firstBuildIssue(router); + expect(issue.kind).toBe(RouterErrorKind.RouteUnreachable); + }); + + it('should report addAll duplicate during build validation', () => { + const router = new Router(); + router.add('GET', '/existing', 'existing'); + router.addAll([ + ['POST', '/new', 'new'], + ['GET', '/existing', 'duplicate'], + ]); + + const err = catchRouterError(() => router.build()); + const data = expectErrorKind(err.data, RouterErrorKind.RouteValidation); + expect(data.errors[0]?.index).toBe(2); + expect(data.errors[0]?.error.kind).toBe(RouterErrorKind.RouteDuplicate); + }); + + it('should report first addAll entry failure during build validation', () => { + const router = new Router(); + router.add('GET', '/existing', 'existing'); + router.addAll([ + ['GET', '/existing', 'duplicate'], + ['POST', '/other', 'other'], + ]); + + const err = catchRouterError(() => router.build()); + const data = expectErrorKind(err.data, RouterErrorKind.RouteValidation); + expect(data.errors[0]?.index).toBe(1); + expect(data.errors[0]?.error.kind).toBe(RouterErrorKind.RouteDuplicate); + }); + + it('should throw kind=RouterErrorKind.RouterSealed when addAll called after build', () => { + const router = new Router(); + router.add('GET', '/x', 'x'); + router.build(); + + const err = catchRouterError(() => router.addAll([['POST', '/y', 'y']])); + expect(err.data.kind).toBe(RouterErrorKind.RouterSealed); + expect(err.data.registeredCount).toBe(0); + }); + + it('should throw kind=RouterErrorKind.MethodLimit when exceeding 32 methods', () => { + const router = new Router(); + fillMethodsToLimit(router); + router.add('OVERFLOW_METHOD', '/overflow', 'overflow'); + + const issue = firstBuildIssue(router); + expect(issue.kind).toBe(RouterErrorKind.MethodLimit); + }); + + it('should still match existing routes after sealed add-error', () => { + const router = new Router(); + router.add('GET', '/ok', 'ok'); + router.build(); + + expect(() => router.add('POST', '/new', 'new')).toThrow(RouterError); + + const matchResult = router.match('GET', '/ok'); + expect(matchResult).not.toBeNull(); + expect(matchResult!.value).toBe('ok'); + }); + + it('should throw for unclosed regex pattern (route-parse)', () => { + const router = new Router(); + + router.add('GET', '/users/:id(\\d+', 'invalid-regex'); + const issue = firstBuildIssue(router); + expect(issue.kind).toBe(RouterErrorKind.RouteParse); + }); + + it('should reject optional segment expansion above the per-route cap before expansion', () => { + const router = new Router(); + const path = '/' + Array.from({ length: MAX_OPTIONAL_SEGMENTS_PER_ROUTE + 1 }, (_, i) => `:p${i}?`).join('/'); + + router.add('GET', path, 'too-many-optionals'); + const issue = firstBuildIssue(router); + + expect(issue.kind).toBe(RouterErrorKind.RouteParse); + expect(issue.message).toContain(`maximum is ${MAX_OPTIONAL_SEGMENTS_PER_ROUTE}`); + }); + + it('should include kind, message, path, method in error data', () => { + const router = new Router(); + router.build(); + + const err = catchRouterError(() => router.add('GET', '/after-seal', 'v')); + expect(err.data.kind).toBe(RouterErrorKind.RouterSealed); + expect(typeof err.data.message).toBe('string'); + expect(err.data.path).toBe('/after-seal'); + expect(err.data.method).toBe('GET'); + }); + + it('should throw sealed error when add with method array called after build', () => { + const router = new Router(); + router.build(); + + const err = catchRouterError(() => router.add(['GET', 'POST'], '/z', 'z')); + expect(err.data.kind).toBe(RouterErrorKind.RouterSealed); + }); + + it('should throw for param-duplicate in same path', () => { + const router = new Router(); + + router.add('GET', '/users/:id/posts/:id', 'dup-param'); + expect(firstBuildIssue(router).kind).toBe(RouterErrorKind.ParamDuplicate); + }); + + it('should throw for wildcard not in last position (route-parse)', () => { + const router = new Router(); + + router.add('GET', '/files/*/extra', 'bad'); + expect(firstBuildIssue(router).kind).toBe(RouterErrorKind.RouteParse); + }); + + it('should include suggestion field for mutation error kinds', () => { + const r1 = new Router(); + r1.build(); + const sealed = catchRouterError(() => r1.add('GET', '/x', 'x')); + const sealedData = expectErrorKind(sealed.data, RouterErrorKind.RouterSealed); + expect(typeof sealedData.suggestion).toBe('string'); + + const r3 = new Router(); + r3.add('GET', '/x', 'x'); + r3.add('GET', '/x', 'x2'); + const dup = expectErrorKind(firstBuildIssue(r3), RouterErrorKind.RouteDuplicate); + expect(typeof dup.suggestion).toBe('string'); + }); + + it('should throw route-unreachable for a second wildcard at a prefix that already has one (method-scoped)', () => { + const router = new Router(); + router.add('GET', '/files/*path', 'files-get'); + router.add('GET', '/files/*other', 'files-get-2'); + + const issue = firstBuildIssue(router); + expect(issue.kind).toBe(RouterErrorKind.RouteUnreachable); + }); + + it('should allow the same wildcard prefix with different names across distinct methods (F9 — cross-method coexistence)', () => { + const router = new Router(); + router.add('GET', '/files/*path', 'files-get'); + + expect(() => router.add('POST', '/files/*upload', 'files-post')).not.toThrow(); + + router.build(); + expect(router.match('GET', '/files/a.txt')!.value).toBe('files-get'); + expect(router.match('POST', '/files/upload.bin')!.value).toBe('files-post'); + }); + + it('should allow a static route under another method even when one method has a wildcard at the same prefix (F9 — cross-method static/wildcard coexistence)', () => { + const router = new Router(); + router.add('GET', '/files/*p', 'files-list'); + + expect(() => router.add('POST', '/files/static', 'static-upload')).not.toThrow(); + + router.build(); + expect(router.match('GET', '/files/anything')!.value).toBe('files-list'); + expect(router.match('POST', '/files/static')!.value).toBe('static-upload'); + }); + + it('should throw sealed error with registeredCount=0 from addAll after build', () => { + const router = new Router(); + router.add('GET', '/x', 'x'); + router.build(); + + const err = catchRouterError(() => + router.addAll([ + ['POST', '/a', 'a'], + ['PUT', '/b', 'b'], + ]), + ); + expect(err.data.kind).toBe(RouterErrorKind.RouterSealed); + expect(err.data.registeredCount).toBe(0); + }); + + it('should throw route-unreachable when static is registered under an ancestor wildcard', () => { + const router = new Router(); + router.add('GET', '/api/*', 'wildcard'); + router.add('GET', '/api/specific', 'specific'); + + const issue = firstBuildIssue(router); + expect(issue.kind).toBe(RouterErrorKind.RouteUnreachable); + }); + + it('should include method field in add error data', () => { + const router = new Router(); + router.add('GET', '/x', 'x'); + router.build(); + + const err = catchRouterError(() => router.add('POST', '/new', 'new')); + expect(err.data.method).toBe('POST'); + }); + + it('accepts a backreference pattern (regex safety is user responsibility, not router)', () => { + const router = new Router(); + router.add('GET', '/users/:id((?:[a-z])\\1)', 'handler'); + expect(() => router.build()).not.toThrow(); + }); + + it('should reject anchored regex patterns at build (^/$ are never silently stripped)', () => { + const router = new Router(); + router.add('GET', '/users/:id(^\\d+$)', 'handler'); + + expect(() => router.build()).toThrow(); + }); +}); + +describe('register-time rejections (former regression fixtures)', () => { + it('rejects anchored param patterns at parse time alongside a valid one — aggregates only the anchored entry', () => { + const router = new Router(); + + router.add('GET', '/users/:id(\\d+)', 'plain'); + router.add('GET', '/users/:id(^\\d+$)', 'anchored'); + + const error = catchRouterError(() => router.build()); + const data = expectErrorKind(error.data, RouterErrorKind.RouteValidation); + expect(data.errors).toHaveLength(1); + expect(data.errors[0]?.error.kind).toBe(RouterErrorKind.RouteParse); + }); + + it('rejects empty path segments at build time instead of silently remapping dynamic routes', () => { + const router = new Router(); + + router.add('GET', '/api//users/:id', 'handler'); + + const error = catchRouterError(() => router.build()); + const data = expectErrorKind(error.data, RouterErrorKind.RouteValidation); + expect(data.errors[0]?.error.kind).toBe(RouterErrorKind.PathEmptySegment); + }); + + it('reports star expansion conflicts as aggregate build validation errors', () => { + const router = new Router(); + + router.add('PUT', '/files/*other', 'put-wild'); + router.add('*', '/files/*path', 'star'); + + const error = catchRouterError(() => router.build()); + const data = expectErrorKind(error.data, RouterErrorKind.RouteValidation); + expect(data.errors.some(isPutUnreachable)).toBe(true); + + const valid = new Router(); + valid.add('PUT', '/files/*other', 'put-wild'); + valid.build(); + expect(valid.match('PUT', '/files/static')?.value).toBe('put-wild'); + }); + + it('does not publish compiled state when regex compilation fails after static insertion', () => { + const router = new Router(); + + router.add('GET', '/leak/path/:id([z-a])', 'bad'); + + const error = catchRouterError(() => router.build()); + const data = expectErrorKind(error.data, RouterErrorKind.RouteValidation); + expect(data.errors[0]?.error.kind).toBe(RouterErrorKind.RouteParse); + expect(router.match('GET', '/leak/path/value')).toBeNull(); + }); + + it('uses an immutable options snapshot for parser and matcher behavior', () => { + const options = { pathCaseSensitive: false }; + const router = new Router(options); + + router.add('GET', '/Hello', 'handler'); + options.pathCaseSensitive = true; + router.build(); + + expect(router.match('GET', '/hello')?.value).toBe('handler'); + expect(router.match('GET', '/Hello')?.value).toBe('handler'); + }); + + it('reports invalid dynamic routes without making later valid routes reachable', () => { + const router = new Router(); + + router.add('GET', '/a/:x([z-a])', 'bad'); + router.add('GET', '/a/:y', 'good'); + + const error = catchRouterError(() => router.build()); + const data = expectErrorKind(error.data, RouterErrorKind.RouteValidation); + expect(data.errors[0]?.error.kind).toBe(RouterErrorKind.RouteParse); + expect(router.match('GET', '/a/value')).toBeNull(); + + const valid = new Router(); + valid.add('GET', '/a/:y', 'good'); + valid.build(); + expect(valid.match('GET', '/a/value')?.value).toBe('good'); + }); +}); + +describe('route-parse error suggestions include actionable text', () => { + it('unclosed regex includes suggestion', () => { + const r = new Router(); + r.add('GET', '/users/:id(\\d+', 'h'); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(RouterErrorKind.RouteParse); + expect((issue as { suggestion?: string }).suggestion).toBeDefined(); + }); + + it('mid-position wildcard includes suggestion', () => { + const r = new Router(); + r.add('GET', '/files/*tail/extra', 'h'); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(RouterErrorKind.RouteParse); + expect((issue as { suggestion?: string }).suggestion).toBeDefined(); + }); + + it('empty parameter name includes suggestion', () => { + const r = new Router(); + r.add('GET', '/users/:', 'h'); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(RouterErrorKind.RouteParse); + expect((issue as { suggestion?: string }).suggestion).toBeDefined(); + }); + + it('invalid first character in param name includes suggestion', () => { + const r = new Router(); + r.add('GET', '/users/:1id', 'h'); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(RouterErrorKind.RouteParse); + expect((issue as { suggestion?: string }).suggestion).toBeDefined(); + }); + + it('invalid subsequent character in param name includes suggestion', () => { + const r = new Router(); + r.add('GET', '/users/:id-x', 'h'); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(RouterErrorKind.RouteParse); + expect((issue as { suggestion?: string }).suggestion).toBeDefined(); + }); +}); diff --git a/packages/router/test/router-options.test.ts b/packages/router/test/e2e/router-options.test.ts similarity index 54% rename from packages/router/test/router-options.test.ts rename to packages/router/test/e2e/router-options.test.ts index 061ae11..7ece695 100644 --- a/packages/router/test/router-options.test.ts +++ b/packages/router/test/e2e/router-options.test.ts @@ -1,23 +1,10 @@ import { describe, it, expect } from 'bun:test'; -import { Router } from '../src/router'; -import { RouterError } from '../src/error'; - -// ── Helpers ── - -function catchRouterError(fn: () => void): RouterError { - try { - fn(); - } catch (e) { - expect(e).toBeInstanceOf(RouterError); - return e as RouterError; - } - throw new Error('Expected RouterError to be thrown'); -} +import { Router } from '../../src/router'; describe('Router options', () => { it('should not match different case when caseSensitive=true', () => { - const router = new Router({ caseSensitive: true }); + const router = new Router({ pathCaseSensitive: true }); router.add('GET', '/Hello', 'hello'); router.build(); @@ -28,7 +15,7 @@ describe('Router options', () => { }); it('should match different case when caseSensitive=false', () => { - const router = new Router({ caseSensitive: false }); + const router = new Router({ pathCaseSensitive: false }); router.add('GET', '/Hello', 'hello'); router.build(); @@ -55,19 +42,7 @@ describe('Router options', () => { expect(withSlash).toBeNull(); }); - it('should respect maxSegmentLength option', () => { - const router = new Router({ maxSegmentLength: 10 }); - router.add('GET', '/ok', 'ok'); - router.build(); - - const ok = router.match('GET', '/ok'); - expect(ok).not.toBeNull(); - - const err = catchRouterError(() => router.match('GET', '/this-is-too-long-segment')); - expect(err.data.kind).toBe('segment-limit'); - }); - - it('should decode params when decodeParams=true (default)', () => { + it('should decode params (always-on)', () => { const router = new Router(); router.add('GET', '/users/:id', 'user'); router.build(); @@ -77,19 +52,9 @@ describe('Router options', () => { expect(result!.params.id).toBe('hello world'); }); - it('should not decode params when decodeParams=false', () => { - const router = new Router({ decodeParams: false }); - router.add('GET', '/users/:id', 'user'); - router.build(); - - const result = router.match('GET', '/users/hello%20world'); - expect(result).not.toBeNull(); - expect(result!.params.id).toBe('hello%20world'); - }); - it('should work with caseSensitive=false + ignoreTrailingSlash=true combined', () => { const router = new Router({ - caseSensitive: false, + pathCaseSensitive: false, ignoreTrailingSlash: true, }); router.add('GET', '/Hello', 'hello'); @@ -109,27 +74,22 @@ describe('Router options', () => { expect(result!.value).toBe('val'); }); - it('should handle regexSafety mode=\'error\' for unsafe patterns', () => { - const router = new Router({ - regexSafety: { mode: 'error' }, - }); - - const err = catchRouterError(() => router.add('GET', '/test/:val{(a+)+}', 'test')); - expect(err.data.kind).toBe('regex-unsafe'); + it('accepts a vulnerable regex pattern (regex safety is user responsibility)', () => { + const router = new Router(); + router.add('GET', '/test/:val((?:a+)+)', 'test'); + expect(() => router.build()).not.toThrow(); }); - it('should pass through malformed encoding as-is in param values', () => { + it('throws on malformed percent encoding at match (caller responsibility)', () => { const router = new Router(); router.add('GET', '/files/:name', 'files'); router.build(); - const result = router.match('GET', '/files/bad%GG'); - expect(result).not.toBeNull(); - expect(result!.params.name).toBe('bad%GG'); + expect(() => router.match('GET', '/files/bad%GG')).toThrow(); }); - it('should handle optionalParamBehavior=\'setUndefined\'', () => { - const router = new Router({ optionalParamBehavior: 'setUndefined' }); + it('should handle omitMissingOptional=false', () => { + const router = new Router({ omitMissingOptional: false }); router.add('GET', '/users/:id?', 'user'); router.build(); @@ -140,7 +100,7 @@ describe('Router options', () => { expect(result!.params.id).toBeUndefined(); }); - it('should decode %2F in param values to /', () => { + it('decodes percent-escapes in captured param values', () => { const router = new Router(); router.add('GET', '/files/:name', 'files'); router.build(); @@ -149,14 +109,4 @@ describe('Router options', () => { expect(result).not.toBeNull(); expect(result!.params.name).toBe('a/b'); }); - - it('should not decode params when decodeParams=false even with %2F', () => { - const router = new Router({ decodeParams: false }); - router.add('GET', '/files/:name', 'files'); - router.build(); - - const result = router.match('GET', '/files/a%2Fb'); - expect(result).not.toBeNull(); - expect(result!.params.name).toBe('a%2Fb'); - }); }); diff --git a/packages/router/test/integration/build-rollback.test.ts b/packages/router/test/integration/build-rollback.test.ts new file mode 100644 index 0000000..f40e2f4 --- /dev/null +++ b/packages/router/test/integration/build-rollback.test.ts @@ -0,0 +1,157 @@ +import { describe, expect, it } from 'bun:test'; + +import { getRouterInternals } from '../../internal'; +import { RouterError } from '../../src/error'; +import { Router } from '../../src/router'; +import { RouterErrorKind } from '../../src/types'; +import { expectErrorKind } from '../test-utils'; + +const peekHandlers = (r: Router): unknown[] => + (getRouterInternals(r).registration as unknown as { handlers?: unknown[] }).handlers ?? []; + +describe('rollback semantic equivalence', () => { + it('rolls back prefix-index mutations cleanly when a later route in the same batch fails', () => { + const r1 = new Router(); + r1.add('GET', '/a/*p', 'wild'); + r1.add('GET', '/a/leaf', 'leaf'); + expect(() => r1.build()).toThrow(RouterError); + + const r2 = new Router(); + r2.add('GET', '/b/leaf', 'fresh'); + r2.build(); + expect(r2.match('GET', '/b/leaf')?.value).toBe('fresh'); + }); + + it('rolls back segment-tree typed undo records correctly on regex compilation failure mid-batch', () => { + const r = new Router(); + r.add('GET', '/zone/sector/leaf-a', 'a'); + r.add('GET', '/zone/sector/leaf-b/:id([z-a])', 'bad'); + r.add('GET', '/zone/sector/leaf-c', 'c'); + + const error = (() => { + try { + r.build(); + return null; + } catch (e) { + return e as RouterError; + } + })(); + expect(error).not.toBeNull(); + expect(error!.data.kind).toBe(RouterErrorKind.RouteValidation); + + const r2 = new Router(); + r2.add('GET', '/zone/sector/leaf-a', 'a'); + r2.add('GET', '/zone/sector/leaf-c', 'c'); + r2.build(); + expect(r2.match('GET', '/zone/sector/leaf-a')?.value).toBe('a'); + expect(r2.match('GET', '/zone/sector/leaf-c')?.value).toBe('c'); + }); + + it('prefix-index node counters are exactly zero after total batch rollback', () => { + const r1 = new Router(); + for (let i = 0; i < 50; i++) { + r1.add('GET', `/a/${i}`, 'x'); + } + r1.add('GET', '/a/0', 'duplicate'); + expect(() => r1.build()).toThrow(RouterError); + + const r2 = new Router(); + r2.add('GET', '/a/0', 'a0'); + r2.add('GET', '/a/*tail', 'wild'); + expect(() => r2.build()).toThrow(RouterError); + + const r3 = new Router(); + for (let i = 0; i < 50; i++) { + r3.add('GET', `/x/${i}`, 'x'); + } + r3.build(); + for (let i = 0; i < 50; i++) { + expect(r3.match('GET', `/x/${i}`)?.value).toBe('x'); + } + }); + + it('handlers/terminalHandlers/paramsFactories typed truncation undo restores exact lengths', () => { + const r1 = new Router(); + r1.add('GET', '/a/:x', 'x'); + r1.add('GET', '/b/:y', 'y'); + r1.add('GET', '/c/:z([z-a])', 'bad'); + expect(() => r1.build()).toThrow(RouterError); + + const r2 = new Router(); + r2.add('GET', '/a/:x', 'x'); + r2.add('GET', '/b/:y', 'y'); + r2.build(); + expect(r2.match('GET', '/a/foo')?.value).toBe('x'); + expect(r2.match('GET', '/b/bar')?.value).toBe('y'); + }); + + it('static-map typed restore record preserves prior values on slot collision rollback', () => { + const r1 = new Router(); + r1.add('GET', '/x', 'first'); + r1.add('GET', '/x', 'second'); + expect(() => r1.build()).toThrow(RouterError); + + const r2 = new Router(); + r2.add('GET', '/x', 'first'); + r2.build(); + expect(r2.match('GET', '/x')?.value).toBe('first'); + }); + + it('codegen pre-walk node-count gate does not skip valid small trees', () => { + const r = new Router(); + r.add('GET', '/x/:id', 'h'); + r.build(); + const m = r.match('GET', '/x/42'); + expect(m?.value).toBe('h'); + expect(m?.params.id).toBe('42'); + }); + + it('codegen pre-walk node-count gate bails cleanly on huge trees and falls back to walker', () => { + const r = new Router(); + for (let i = 0; i < 1000; i++) { + r.add('GET', `/leaf-${i}/:tail`, `h${i}`); + } + r.build(); + expect(r.match('GET', '/leaf-0/x')?.value).toBe('h0'); + expect(r.match('GET', '/leaf-500/abc')?.value).toBe('h500'); + expect(r.match('GET', '/leaf-999/zzz')?.value).toBe('h999'); + expect(r.match('GET', '/nonexistent/x')).toBeNull(); + }); +}); + +describe('handler-snapshot publication after a failed build', () => { + it('failed build validation does not publish compiled handler slots', () => { + const r = new Router(); + + r.add('GET', '/users/:id(\\d+)', 'digit'); + r.add('GET', '/users/:id([a-z]+)', 'alpha'); + + let threw: unknown = null; + try { + r.build(); + } catch (e) { + threw = e; + } + + expect(threw).toBeInstanceOf(RouterError); + const re = threw as RouterError; + const data = expectErrorKind(re.data, RouterErrorKind.RouteValidation); + expect(data.errors[0]?.error.kind).toBe(RouterErrorKind.RouteConflict); + + const handlers = peekHandlers(r); + expect(handlers.length).toBe(0); + }); + + it('failed build validation keeps compiled handler snapshot empty after many invalid routes', () => { + const r = new Router(); + + r.add('GET', '/x/:id(\\d+)', 'base'); + for (let i = 0; i < 10; i++) { + r.add('GET', '/x/:id([a-z]+)', `bad-${i}`); + } + + expect(() => r.build()).toThrow(RouterError); + + expect(peekHandlers(r).length).toBe(0); + }); +}); diff --git a/packages/router/test/integration/factor-detection.test.ts b/packages/router/test/integration/factor-detection.test.ts new file mode 100644 index 0000000..38e1271 --- /dev/null +++ b/packages/router/test/integration/factor-detection.test.ts @@ -0,0 +1,94 @@ +import { describe, it, expect } from 'bun:test'; + +import { Router } from '../../src/router'; + +describe('factor detection — multi-children leaves reject the factor', () => { + it('rejects factor when each tenant has 2+ static children at the leaf', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/a`, `a-${i}`); + r.add('GET', `/tenant-${i}/b`, `b-${i}`); + } + r.build(); + expect(r.match('GET', '/tenant-0/a')?.value).toBe('a-0'); + expect(r.match('GET', '/tenant-0/b')?.value).toBe('b-0'); + expect(r.match('GET', '/tenant-1499/a')?.value).toBe('a-1499'); + expect(r.match('GET', '/tenant-1499/b')?.value).toBe('b-1499'); + expect(r.match('GET', '/tenant-1500/a')).toBeNull(); + }); + + it('accepts factor when each tenant has exactly 1 static child + paramChild', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/users/:id`, `u-${i}`); + } + r.build(); + expect(r.match('GET', '/tenant-0/users/42')?.value).toBe('u-0'); + expect(r.match('GET', '/tenant-1499/users/42')?.value).toBe('u-1499'); + }); +}); + +describe('factor detection — deep single-chain', () => { + it('walks deep static chains during leafStoreOf without losing precision', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/a/b/c/d/e/:final`, `deep-${i}`); + } + r.build(); + expect(r.match('GET', '/tenant-0/a/b/c/d/e/X')?.value).toBe('deep-0'); + expect(r.match('GET', '/tenant-1499/a/b/c/d/e/Y')?.value).toBe('deep-1499'); + }); +}); + +describe('factor detection — wildcard at canonical leaf', () => { + it('factors over star-wildcard tail', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/files/*path`, `wild-${i}`); + } + r.build(); + expect(r.match('GET', '/tenant-0/files/a/b')?.value).toBe('wild-0'); + expect(r.match('GET', '/tenant-1499/files/x/y/z')?.value).toBe('wild-1499'); + expect(r.match('GET', '/tenant-0/files')?.value).toBe('wild-0'); + }); +}); + +describe('factor detection — terminal store presence asymmetry (post-fix)', () => { + it('rejects factor when wildcardStore presence differs between siblings', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/files/:id`, `files-${i}`); + } + r.build(); + expect(r.match('GET', '/tenant-0/files/abc')?.value).toBe('files-0'); + expect(r.match('GET', '/tenant-1499/files/x')?.value).toBe('files-1499'); + }); +}); + +describe('factor detection — sibling chain length asymmetry', () => { + it('rejects factor when one tenant has a longer chain', () => { + const r = new Router(); + for (let i = 0; i < 1499; i++) { + r.add('GET', `/tenant-${i}/users/:id`, `short-${i}`); + } + r.add('GET', '/tenant-9/users/:id/posts', 'long-9'); + r.build(); + expect(r.match('GET', '/tenant-0/users/x')?.value).toBe('short-0'); + expect(r.match('GET', '/tenant-9/users/x')?.value).toBe('short-9'); + expect(r.match('GET', '/tenant-9/users/x/posts')?.value).toBe('long-9'); + expect(r.match('GET', '/tenant-1498/users/y')?.value).toBe('short-1498'); + }); +}); + +describe('factor detection — long single-chain still factors', () => { + it('30-segment single chain in every tenant still factors and matches', () => { + const r = new Router(); + const tail = Array.from({ length: 30 }, (_, i) => `s${i}`).join('/'); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/${tail}/:final`, `deep-${i}`); + } + r.build(); + expect(r.match('GET', `/tenant-0/${tail}/X`)?.value).toBe('deep-0'); + expect(r.match('GET', `/tenant-1499/${tail}/Y`)?.value).toBe('deep-1499'); + }); +}); diff --git a/packages/router/test/integration/lifecycle.test.ts b/packages/router/test/integration/lifecycle.test.ts new file mode 100644 index 0000000..bbae72c --- /dev/null +++ b/packages/router/test/integration/lifecycle.test.ts @@ -0,0 +1,129 @@ +import { describe, it, expect } from 'bun:test'; + +import { RouterError } from '../../src/error'; +import { Router } from '../../src/router'; +import { RouterErrorKind } from '../../src/types'; + +describe('Router lifecycle — re-seal idempotency', () => { + it('build() called twice returns the same router (no re-execution)', () => { + const r = new Router(); + r.add('GET', '/x', 'h'); + const ret1 = r.build(); + const ret2 = r.build(); + expect(ret1).toBe(ret2); + expect(r.match('GET', '/x')?.value).toBe('h'); + }); + + it('add() after build() always throws router-sealed', () => { + const r = new Router(); + r.add('GET', '/x', 'h'); + r.build(); + for (const fn of [ + () => r.add('GET', '/y', 'h'), + () => r.add('POST', '/z', 'h'), + () => r.add(['GET', 'POST'], '/w', 'h'), + () => r.add('*', '/v', 'h'), + () => r.addAll([['GET', '/u', 'h']]), + ]) { + try { + fn(); + throw new Error('expected throw'); + } catch (e) { + expect(e).toBeInstanceOf(RouterError); + expect((e as RouterError).data.kind).toBe(RouterErrorKind.RouterSealed); + } + } + }); + + it('match() before build() returns null silently', () => { + const r = new Router(); + r.add('GET', '/x', 'h'); + expect(r.match('GET', '/x')).toBeNull(); + }); + + it('allowedMethods() before build() returns empty array', () => { + const r = new Router(); + r.add('GET', '/x', 'h'); + expect(r.allowedMethods('/x')).toEqual([]); + }); +}); + +describe('addAll + add interleaved', () => { + it('mixed addAll and add calls register correctly', () => { + const r = new Router(); + r.add('GET', '/a', 'a'); + r.addAll([ + ['POST', '/b', 'b'], + ['DELETE', '/c', 'c'], + ]); + r.add('PATCH', '/d', 'd'); + r.build(); + expect(r.match('GET', '/a')?.value).toBe('a'); + expect(r.match('POST', '/b')?.value).toBe('b'); + expect(r.match('DELETE', '/c')?.value).toBe('c'); + expect(r.match('PATCH', '/d')?.value).toBe('d'); + }); +}); + +describe('Cache eviction stress (clock-sweep)', () => { + it('survives 10k unique-path churn without unbounded growth', () => { + const r = new Router({ cacheSize: 8 }); + r.add('GET', '/users/:id', 'h'); + r.build(); + for (let i = 0; i < 10_000; i++) { + r.match('GET', `/users/u${i}`); + } + expect(r.match('GET', '/users/last')?.value).toBe('h'); + expect(r.match('GET', '/users/u9999')?.value).toBe('h'); + }); + + it('cacheSize=1 always evicts on miss', () => { + const r = new Router({ cacheSize: 1 }); + r.add('GET', '/users/:id', 'h'); + r.build(); + expect(r.match('GET', '/users/a')?.value).toBe('h'); + expect(r.match('GET', '/users/b')?.value).toBe('h'); + expect(r.match('GET', '/users/c')?.value).toBe('h'); + }); +}); + +describe('Recursive walker (hasAmbiguousNode true case)', () => { + it('static + param siblings at the same depth route correctly', () => { + const r = new Router(); + r.add('GET', '/users/me/profile', 'me-profile'); + r.add('GET', '/users/me', 'me'); + r.add('GET', '/users/:id', 'detail'); + r.add('GET', '/users/:id/posts', 'posts'); + r.build(); + expect(r.match('GET', '/users/me')?.value).toBe('me'); + expect(r.match('GET', '/users/me/profile')?.value).toBe('me-profile'); + expect(r.match('GET', '/users/42')?.value).toBe('detail'); + expect(r.match('GET', '/users/42/posts')?.value).toBe('posts'); + expect(r.match('GET', '/users/me/posts')?.value).toBe('posts'); + }); +}); + +describe('Method registry — bulk + custom', () => { + it('handles default 7 methods + 25 custom (= 32 total)', () => { + const r = new Router(); + for (let i = 0; i < 25; i++) { + r.add(`CUSTOM${i.toString().padStart(2, '0')}`, '/x', `h-${i}`); + } + r.add('GET', '/y', 'get-y'); + r.build(); + expect(r.match('CUSTOM00', '/x')?.value).toBe('h-0'); + expect(r.match('CUSTOM24', '/x')?.value).toBe('h-24'); + expect(r.match('GET', '/y')?.value).toBe('get-y'); + const methods = r.allowedMethods('/x'); + expect(methods.length).toBe(25); + }); +}); + +describe('Encoded path edge', () => { + it('throws on malformed percent-encoded input (caller responsibility)', () => { + const r = new Router(); + r.add('GET', '/x/:p', 'h'); + r.build(); + expect(() => r.match('GET', '/x/%FF')).toThrow(); + }); +}); diff --git a/packages/router/test/integration/memory-bounds.test.ts b/packages/router/test/integration/memory-bounds.test.ts new file mode 100644 index 0000000..5583e2f --- /dev/null +++ b/packages/router/test/integration/memory-bounds.test.ts @@ -0,0 +1,136 @@ +import { describe, expect, it } from 'bun:test'; + +import { Router } from '../../src/router'; + +function forceGc(): void { + if (typeof (globalThis as unknown as { Bun?: { gc?: (sync: boolean) => void } }).Bun?.gc === 'function') { + (globalThis as unknown as { Bun: { gc: (sync: boolean) => void } }).Bun.gc(true); + } +} + +function rssMB(): number { + return process.memoryUsage().rss / (1024 * 1024); +} + +function settleSamples(samples: number, intervalMs = 5): Promise { + return new Promise(resolve => { + let i = 0; + let last = 0; + const tick = () => { + forceGc(); + last = rssMB(); + i++; + if (i >= samples) { + resolve(last); + } else { + setTimeout(tick, intervalMs); + } + }; + tick(); + }); +} + +describe('memory bounds — repeated builds do not leak', () => { + it('100 builds of a 100-route mixed router stay within 30 MB RSS delta', async () => { + for (let warm = 0; warm < 5; warm++) { + const r = new Router(); + for (let i = 0; i < 100; i++) { + r.add('GET', `/api/v1/users/${i}/posts/:id`, `h-${i}`); + } + r.build(); + r.match('GET', '/api/v1/users/50/posts/42'); + } + + const before = await settleSamples(8); + + for (let trial = 0; trial < 100; trial++) { + const r = new Router(); + for (let i = 0; i < 100; i++) { + r.add('GET', `/api/v1/users/${i}/posts/:id`, `h-${i}`); + } + r.build(); + r.match('GET', '/api/v1/users/50/posts/42'); + } + + const after = await settleSamples(8); + const deltaMB = after - before; + expect(deltaMB).toBeLessThan(30); + }); + + it('50 builds of a wildcard-heavy router stay within 30 MB RSS delta', async () => { + for (let warm = 0; warm < 5; warm++) { + const r = new Router(); + for (let i = 0; i < 50; i++) { + r.add('GET', `/files-${i}/*path`, `f-${i}`); + } + r.build(); + } + + const before = await settleSamples(8); + + for (let trial = 0; trial < 50; trial++) { + const r = new Router(); + for (let i = 0; i < 50; i++) { + r.add('GET', `/files-${i}/*path`, `f-${i}`); + } + r.build(); + r.match('GET', '/files-25/a/b/c'); + } + + const after = await settleSamples(8); + const deltaMB = after - before; + expect(deltaMB).toBeLessThan(30); + }); + + it('failed builds (rollback path) do not leak heap', async () => { + for (let warm = 0; warm < 5; warm++) { + const r = new Router(); + r.add('GET', '/x', 'a'); + r.add('GET', '/x', 'b'); + try { + r.build(); + } catch { + void 0; + } + } + + const before = await settleSamples(8); + + for (let trial = 0; trial < 100; trial++) { + const r = new Router(); + for (let i = 0; i < 50; i++) { + r.add('GET', `/route-${i}`, `h-${i}`); + } + r.add('GET', '/route-0', 'dup'); + try { + r.build(); + } catch { + void 0; + } + } + + const after = await settleSamples(8); + const deltaMB = after - before; + expect(deltaMB).toBeLessThan(30); + }); +}); + +describe('memory bounds — cache eviction is bounded', () => { + it('cache stays at most cacheSize entries under high-cardinality dynamic load', async () => { + const r = new Router({ cacheSize: 16 }); + r.add('GET', '/users/:id', 'u'); + r.build(); + + forceGc(); + const before = rssMB(); + + for (let i = 0; i < 10_000; i++) { + r.match('GET', `/users/${i}`); + } + + forceGc(); + const after = rssMB(); + const deltaMB = after - before; + expect(deltaMB).toBeLessThan(20); + }); +}); diff --git a/packages/router/test/integration/multi-module-regression.test.ts b/packages/router/test/integration/multi-module-regression.test.ts new file mode 100644 index 0000000..42d602a --- /dev/null +++ b/packages/router/test/integration/multi-module-regression.test.ts @@ -0,0 +1,311 @@ +import { describe, it, expect } from 'bun:test'; + +import { RouterError } from '../../src/error'; +import { Router } from '../../src/router'; +import { RouterErrorKind } from '../../src/types'; +import { expectErrorKind, firstBuildIssue } from '../test-utils'; + +function matchValue(r: Router, path: string): string | null { + const got = r.match('GET', path); + return got === null ? null : got.value; +} + +describe('subtreeShapesEqual: terminal-store presence (C-03/04/05/06)', () => { + it('rejects factor when one tenant adds a mid-route terminal that other tenants do not have', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/data/:type/:item`, `leaf-${i}`); + } + r.add('GET', '/tenant-5/data/:type', 'mid-5'); + r.build(); + + expect(r.match('GET', '/tenant-0/data/abc/xyz')?.value).toBe('leaf-0'); + expect(r.match('GET', '/tenant-99/data/abc/xyz')?.value).toBe('leaf-99'); + expect(r.match('GET', '/tenant-5/data/abc')?.value).toBe('mid-5'); + expect(r.match('GET', '/tenant-5/data/abc/xyz')?.value).toBe('leaf-5'); + expect(r.match('GET', '/tenant-99/data/abc')).toBeNull(); + }); + + it('still routes correctly when every tenant shares the exact same shape (factor applies)', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/data/:type/:item`, `leaf-${i}`); + } + r.build(); + + expect(r.match('GET', '/tenant-0/data/abc/xyz')?.value).toBe('leaf-0'); + expect(r.match('GET', '/tenant-750/data/x/y')?.value).toBe('leaf-750'); + expect(r.match('GET', '/tenant-1499/data/x/y')?.value).toBe('leaf-1499'); + expect(r.match('GET', '/tenant-1500/data/x/y')).toBeNull(); + }); + + it('does not factor sibling tenants that differ only in param regex pattern (each keeps its own tester)', () => { + const r = new Router(); + // 1499 \d+ siblings plus one [a-z]+ sibling — same shape, different tester. + // Factoring them together would force the odd one through the shared \d+ tester (wrong match). + for (let i = 0; i < 1499; i++) { + r.add('GET', `/num-${i}/:id(\\d+)`, `num-${i}`); + } + r.add('GET', '/alpha/:id([a-z]+)', 'alpha'); + r.build(); + + // The [a-z]+ sibling must accept letters and reject digits... + expect(r.match('GET', '/alpha/abc')?.value).toBe('alpha'); + expect(r.match('GET', '/alpha/123')).toBeNull(); + // ...and a \d+ sibling the opposite. (Whichever became the factor's firstChild, + // the other would be wrongly walked through it if they were factored together.) + expect(r.match('GET', '/num-0/123')?.value).toBe('num-0'); + expect(r.match('GET', '/num-0/abc')).toBeNull(); + }); + + it('codegen warmup traverses a multi-static fan-out under a shared dynamic prefix', () => { + // Dynamic routes (each ends in :id) sharing a prefix with 4 static branches put + // a staticChildren map at /api, which the codegen JIT-warmup path walks. + const r = new Router(); + r.add('GET', '/api/users/:id', 'u'); + r.add('GET', '/api/posts/:id', 'p'); + r.add('GET', '/api/comments/:id', 'c'); + r.add('GET', '/api/tags/:id', 't'); + r.build(); + + expect(r.match('GET', '/api/users/1')?.value).toBe('u'); + expect(r.match('GET', '/api/posts/2')?.value).toBe('p'); + expect(r.match('GET', '/api/comments/3')?.value).toBe('c'); + expect(r.match('GET', '/api/tags/4')?.value).toBe('t'); + }); + + it('does not factor sibling tenants that differ only in param name (each keeps its own param key)', () => { + const r = new Router(); + // 1499 :id siblings plus one :slug sibling — same regex/shape, different param name. + for (let i = 0; i < 1499; i++) { + r.add('GET', `/id-${i}/:id(\\d+)`, `id-${i}`); + } + r.add('GET', '/slugged/:slug(\\d+)', 'slugged'); + r.build(); + + expect(r.match('GET', '/slugged/42')?.params).toEqual({ slug: '42' }); + expect(r.match('GET', '/id-0/42')?.params).toEqual({ id: '42' }); + }); +}); + +describe('multi-prefix factor: partial-mutation rollback (W1, C-07/08/09)', () => { + it('leaves the tree intact when only some root children qualify for a factor', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/a/${i}/users/:id`, `a-${i}`); + } + r.add('GET', '/b/static/route', 'b-static'); + r.build(); + + expect(r.match('GET', '/a/500/users/abc')?.value).toBe('a-500'); + expect(r.match('GET', '/a/0/users/x')?.value).toBe('a-0'); + expect(r.match('GET', '/a/1499/users/y')?.value).toBe('a-1499'); + expect(r.match('GET', '/b/static/route')?.value).toBe('b-static'); + expect(r.match('GET', '/b/static/wrong')).toBeNull(); + expect(r.match('GET', '/a/9999/users/x')).toBeNull(); + }); + + it('still applies factor when every root child qualifies', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/users/${i}/posts/:id`, `users-${i}`); + r.add('GET', `/api/${i}/items/:id`, `api-${i}`); + } + r.build(); + + expect(r.match('GET', '/users/0/posts/abc')?.value).toBe('users-0'); + expect(r.match('GET', '/users/1499/posts/x')?.value).toBe('users-1499'); + expect(r.match('GET', '/api/0/items/abc')?.value).toBe('api-0'); + expect(r.match('GET', '/api/1499/items/y')?.value).toBe('api-1499'); + expect(r.match('GET', '/users/9999/posts/x')).toBeNull(); + expect(r.match('GET', '/api/9999/items/x')).toBeNull(); + }); +}); + +describe('super-factory presentBitmask boundary (C-01/02)', () => { + it('accepts a route with exactly 31 capturing segments', () => { + const r = new Router(); + const segs = Array.from({ length: 31 }, (_, i) => `:p${i}`).join('/'); + r.add('GET', `/${segs}`, 'wide'); + r.build(); + + const url = '/' + Array.from({ length: 31 }, (_, i) => `v${i}`).join('/'); + const got = r.match('GET', url); + expect(got?.value).toBe('wide'); + expect(Object.keys(got!.params).length).toBe(31); + expect(got!.params['p0']).toBe('v0'); + expect(got!.params['p30']).toBe('v30'); + }); + + it('rejects a route with 32 capturing segments at registration', () => { + const r = new Router(); + const segs = Array.from({ length: 32 }, (_, i) => `:p${i}`).join('/'); + r.add('GET', `/${segs}`, 'too-wide'); + const issue = firstBuildIssue(r); + expect(issue.kind).toBe(RouterErrorKind.RouteParse); + expect(issue.message).toContain('31'); + }); +}); + +describe('walker tier consistency — every applicable tier returns the same result', () => { + const cases = [ + { + name: 'iterative tier (small static-only)', + register: (r: Router) => { + r.add('GET', '/api/v1/users', 'list'); + r.add('GET', '/api/v1/users/:id', 'detail'); + r.add('GET', '/api/v1/users/:id/posts', 'posts'); + }, + probes: [ + ['/api/v1/users', 'list'], + ['/api/v1/users/42', 'detail'], + ['/api/v1/users/42/posts', 'posts'], + ['/api/v1/missing', null], + ] as const, + }, + { + name: 'prefixed-factor tier (single chain + 1500 fanout)', + register: (r: Router) => { + for (let i = 0; i < 1500; i++) { + r.add('GET', `/users/${i}/posts/:id`, `u-${i}`); + } + }, + probes: [ + ['/users/0/posts/x', 'u-0'], + ['/users/1499/posts/y', 'u-1499'], + ['/users/750/posts/z', 'u-750'], + ['/users/9999/posts/x', null], + ] as const, + }, + { + name: 'multi-prefix factor tier (multi-root + per-child fanout)', + register: (r: Router) => { + for (let i = 0; i < 1500; i++) { + r.add('GET', `/users/${i}/posts/:id`, `u-${i}`); + r.add('GET', `/api/${i}/items/:id`, `a-${i}`); + } + }, + probes: [ + ['/users/0/posts/x', 'u-0'], + ['/api/0/items/x', 'a-0'], + ['/users/1499/posts/y', 'u-1499'], + ['/api/1499/items/z', 'a-1499'], + ['/users/0/missing/x', null], + ] as const, + }, + { + name: 'root-level tenant factor (>1000 sibling tenants at root)', + register: (r: Router) => { + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/users/:id`, `t-${i}`); + } + }, + probes: [ + ['/tenant-0/users/x', 't-0'], + ['/tenant-500/users/y', 't-500'], + ['/tenant-1499/users/z', 't-1499'], + ['/tenant-9999/users/x', null], + ] as const, + }, + ]; + + for (const c of cases) { + it(c.name, () => { + const r = new Router(); + c.register(r); + r.build(); + for (const [path, expected] of c.probes) { + expect(matchValue(r, path)).toBe(expected); + } + }); + } +}); + +describe('leafStoreOf rejects multi-terminal subtree (AUDIT2-001/002)', () => { + it('does not collapse intermediate + leaf terminals into one factor entry', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/data/:id`, `mid-${i}`); + r.add('GET', `/tenant-${i}/data/:id/item`, `leaf-${i}`); + } + r.build(); + expect(r.match('GET', '/tenant-0/data/abc')?.value).toBe('mid-0'); + expect(r.match('GET', '/tenant-0/data/abc/item')?.value).toBe('leaf-0'); + expect(r.match('GET', '/tenant-99/data/x')?.value).toBe('mid-99'); + expect(r.match('GET', '/tenant-99/data/x/item')?.value).toBe('leaf-99'); + expect(r.match('GET', '/tenant-1499/data/y/item')?.value).toBe('leaf-1499'); + }); +}); + +describe('cacheSize validation (AUDIT2-009)', () => { + it('rejects negative cacheSize', () => { + expect(() => new Router({ cacheSize: -1 })).toThrow(RouterError); + }); + it('rejects zero cacheSize', () => { + expect(() => new Router({ cacheSize: 0 })).toThrow(RouterError); + }); + it('rejects NaN cacheSize', () => { + expect(() => new Router({ cacheSize: Number.NaN })).toThrow(RouterError); + }); + it('rejects non-integer cacheSize', () => { + expect(() => new Router({ cacheSize: 3.5 })).toThrow(RouterError); + }); + it('accepts positive integer cacheSize', () => { + expect(() => new Router({ cacheSize: 1024 })).not.toThrow(); + expect(() => new Router({ cacheSize: 1 })).not.toThrow(); + }); + it('error has kind=router-options-invalid', () => { + try { + new Router({ cacheSize: -1 }); + } catch (e) { + expect(e).toBeInstanceOf(RouterError); + expect((e as RouterError).data.kind).toBe(RouterErrorKind.RouterOptionsInvalid); + return; + } + throw new Error('expected throw'); + }); +}); + +describe('rollback after route validation failure (R1)', () => { + it('truncates every per-terminal column including presentBitmaskByTerminal', () => { + const buildOnce = () => { + const r = new Router(); + r.add('GET', '/users/:id?', 'ok-1'); + r.add('GET', '/' + Array.from({ length: 32 }, (_, i) => `:p${i}`).join('/'), 'too-many'); + r.add('GET', '/posts/:slug', 'ok-2'); + try { + r.build(); + } catch (e) { + return e as RouterError; + } + throw new Error('expected build to throw'); + }; + const d1 = expectErrorKind(buildOnce().data, RouterErrorKind.RouteValidation); + const d2 = expectErrorKind(buildOnce().data, RouterErrorKind.RouteValidation); + expect(d1.errors.length).toBe(d2.errors.length); + expect(d1.errors[0]!.error.kind).toBe(d2.errors[0]!.error.kind); + }); +}); + +describe('coverage: ParamSiblingAdd undo + LEAF_STORE_MAX_DEPTH removal', () => { + it('rolls back a fresh param-sibling on bulk seal failure (UndoKind.ParamSiblingAdd)', () => { + const r = new Router(); + r.add('GET', '/users/:a(\\d+)/x', 'first'); + r.add('GET', '/users/:b(\\d+)/y', 'second'); + r.add('GET', '?bad-path', 'broken'); + expect(() => r.build()).toThrow(RouterError); + }); + + it('factors a >64-segment chain (no LEAF_STORE_MAX_DEPTH ceiling)', () => { + const r = new Router(); + const chain = Array.from({ length: 70 }, (_, i) => `s${i}`).join('/'); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/${chain}/:final`, `deep-${i}`); + } + r.build(); + const probe = `/tenant-0/${chain}/X`; + expect(r.match('GET', probe)?.value).toBe('deep-0'); + const tail = `/tenant-1499/${chain}/Y`; + expect(r.match('GET', tail)?.value).toBe('deep-1499'); + }); +}); diff --git a/packages/router/test/integration/walker-dispatch.test.ts b/packages/router/test/integration/walker-dispatch.test.ts new file mode 100644 index 0000000..766d399 --- /dev/null +++ b/packages/router/test/integration/walker-dispatch.test.ts @@ -0,0 +1,596 @@ +import { describe, it, expect } from 'bun:test'; + +import { getRouterInternals } from '../../internal'; +import { Router } from '../../src/router'; +import { MatchSource } from '../../src/types'; + +function pickedWalkerName(router: Router): string | null { + const trees = ( + getRouterInternals(router) as unknown as { + matchLayer: { trees: Array<((u: string, s: unknown) => boolean) | null> }; + } + ).matchLayer.trees; + const tree = trees.find(t => t != null); + return tree ? tree.name : null; +} + +describe('iterative walker (wide fanout exceeding codegen size budget)', () => { + function makeWideFanoutRouter() { + const r = new Router(); + for (let i = 0; i < 200; i++) { + r.add('GET', `/zone${i}/:slug`, `r${i}`); + r.add('GET', `/zone${i}/:slug/sub/:sub`, `r${i}sub`); + } + r.build(); + return r; + } + + it('selects the iterative walker when codegen exceeds source budget', () => { + expect(pickedWalkerName(makeWideFanoutRouter())).toBe('walk'); + }); + + it('matches single-param routes', () => { + const r = makeWideFanoutRouter(); + const m = r.match('GET', '/zone3/foo'); + expect(m).not.toBeNull(); + expect(m!.value).toBe('r3'); + expect(m!.params).toEqual({ slug: 'foo' }); + }); + + it('matches param chains', () => { + const r = makeWideFanoutRouter(); + const m = r.match('GET', '/zone10/foo/sub/bar'); + expect(m).not.toBeNull(); + expect(m!.value).toBe('r10sub'); + expect(m!.params).toEqual({ slug: 'foo', sub: 'bar' }); + }); + + it('matches different prefixes correctly', () => { + const r = makeWideFanoutRouter(); + expect(r.match('GET', '/zone0/x')!.value).toBe('r0'); + expect(r.match('GET', '/zone24/y')!.value).toBe('r24'); + expect(r.match('GET', '/zone7/x/sub/z')!.value).toBe('r7sub'); + }); + + it('returns null for unmatched prefix', () => { + const r = makeWideFanoutRouter(); + expect(r.match('GET', '/unknown/path')).toBeNull(); + }); + + it('returns null for trailing-slash on terminal param when ignoreTrailingSlash=false', () => { + const r = new Router({ ignoreTrailingSlash: false }); + for (let i = 0; i < 25; i++) { + r.add('GET', `/zone${i}/:slug`, `r${i}`); + r.add('GET', `/zone${i}/:slug/sub/:sub`, `r${i}sub`); + } + r.build(); + expect(r.match('GET', '/zone3/foo/')).toBeNull(); + expect(r.match('GET', '/zone3/foo')!.value).toBe('r3'); + }); + + it('does not match when URL has extra trailing segment beyond the route', () => { + const r = makeWideFanoutRouter(); + expect(r.match('GET', '/zone3/foo/extra')).toBeNull(); + }); + + it('rejects empty param segment (//)', () => { + const r = makeWideFanoutRouter(); + expect(r.match('GET', '/zone3//sub/x')).toBeNull(); + }); + + it('does not match wildcard-only when route had no wildcard', () => { + const r = makeWideFanoutRouter(); + expect(r.match('GET', '/zone3/foo/extras/whatever/here')).toBeNull(); + }); + + it('rejects via tester when a regex param at iterative-walker depth refuses the slice', () => { + const r = new Router(); + for (let i = 0; i < 200; i++) { + r.add('GET', `/zone${i}/users/:id(\\d+)`, `r-${i}`); + } + r.build(); + expect(r.match('GET', '/zone3/users/42')?.value).toBe('r-3'); + expect(r.match('GET', '/zone3/users/abc')).toBeNull(); + }); +}); + +describe('recursive walker (ambiguous tree)', () => { + function makeAmbiguousRouter() { + const r = new Router(); + r.add('GET', '/api/v1/:user', 'v1-user'); + r.add('GET', '/api/:ver/users', 'param-version'); + r.add('GET', '/api/v2/posts/:id', 'v2-post'); + r.add('GET', '/api/:ver/posts/:slug', 'param-post'); + r.build(); + return r; + } + + it('selects the recursive walker for ambiguous trees', () => { + const r = makeAmbiguousRouter(); + const trees = (getRouterInternals(r) as unknown as { matchLayer: { trees: Array } }).matchLayer.trees; + const tree = trees.find(t => t != null) as { name: string }; + expect(tree.name).toBe('walk'); + }); + + it('static-segment route wins over param at the same position (static-first)', () => { + const r = makeAmbiguousRouter(); + const m = r.match('GET', '/api/v1/joe'); + expect(m).not.toBeNull(); + expect(m!.value).toBe('v1-user'); + expect(m!.params).toEqual({ user: 'joe' }); + }); + + it('falls back to param when static does not match', () => { + const r = makeAmbiguousRouter(); + const m = r.match('GET', '/api/v3/users'); + expect(m).not.toBeNull(); + expect(m!.value).toBe('param-version'); + expect(m!.params).toEqual({ ver: 'v3' }); + }); + + it('handles deeper ambiguity correctly (v2/posts vs :ver/posts)', () => { + const r = makeAmbiguousRouter(); + expect(r.match('GET', '/api/v2/posts/42')!.value).toBe('v2-post'); + expect(r.match('GET', '/api/v9/posts/hello')!.value).toBe('param-post'); + }); + + it('does not commit params from a failed static branch', () => { + const r = new Router(); + r.add('GET', '/api/x/:y', 'static-x'); + r.add('GET', '/api/:a/:b/:c', 'three-param'); + r.build(); + + const m = r.match('GET', '/api/x/foo/bar'); + expect(m).not.toBeNull(); + expect(m!.value).toBe('three-param'); + expect(m!.params).toEqual({ a: 'x', b: 'foo', c: 'bar' }); + expect((m!.params as Record).y).toBeUndefined(); + }); + + it('rejects empty param segment under ambiguous tree', () => { + const r = makeAmbiguousRouter(); + expect(r.match('GET', '/api//users')).toBeNull(); + }); + + it('matches root-only when registered alongside ambiguous routes', () => { + const r = new Router(); + r.add('GET', '/', 'root'); + r.add('GET', '/api/v1/:user', 'v1-user'); + r.add('GET', '/api/:ver/users', 'param-version'); + r.build(); + expect(r.match('GET', '/')!.value).toBe('root'); + }); +}); + +describe('wildcard semantics under fallback walkers', () => { + it('multi-wildcard at root rejects empty suffix', () => { + const r = new Router(); + r.add('GET', '/api/*rest+', 'multi'); + r.add('GET', '/other/:a/x', 'other'); + r.add('GET', '/other/:a/:b', 'other2'); + r.build(); + expect(r.match('GET', '/api/foo/bar')!.params).toEqual({ rest: 'foo/bar' }); + expect(r.match('GET', '/api/')).toBeNull(); + expect(r.match('GET', '/api')).toBeNull(); + }); + + it('star-wildcard captures empty when URL ends at prefix', () => { + const r = new Router(); + r.add('GET', '/files/*p', 'files'); + r.add('GET', '/api/:v/x', 'a'); + r.add('GET', '/api/:v/:y', 'b'); + r.build(); + expect(r.match('GET', '/files/a/b')!.params).toEqual({ p: 'a/b' }); + expect(r.match('GET', '/files/')!.params).toEqual({ p: '' }); + expect(r.match('GET', '/files')!.params).toEqual({ p: '' }); + }); +}); + +describe('decoding under fallback walkers', () => { + it('decodes percent-encoded params', () => { + const r = new Router(); + r.add('GET', '/api/v1/:user', 'v1'); + r.add('GET', '/api/:ver/users', 'pv'); + r.build(); + const m = r.match('GET', '/api/v1/hello%20world'); + expect(m).not.toBeNull(); + expect(m!.params).toEqual({ user: 'hello world' }); + }); + + it('throws on malformed percent-encoded input (router does not swallow decode errors)', () => { + const r = new Router(); + r.add('GET', '/api/v1/:user', 'v1'); + r.add('GET', '/api/:ver/users', 'pv'); + r.build(); + expect(() => r.match('GET', '/api/v1/%E0%A4%A')).toThrow(); + }); +}); + +describe('regex testers under fallback walkers', () => { + it('passes when value matches regex, fails otherwise (recursive walker)', () => { + const r = new Router(); + r.add('GET', '/api/v1/:id(\\d+)', 'numeric'); + r.add('GET', '/api/:ver/users', 'pv'); + r.build(); + expect(r.match('GET', '/api/v1/42')!.value).toBe('numeric'); + expect(r.match('GET', '/api/v1/foo')).toBeNull(); + }); +}); + +describe('multi-method routers (no shape specialization)', () => { + it('routes by method correctly', () => { + const r = new Router(); + r.add('GET', '/users/:id', 'get'); + r.add('POST', '/users/:id', 'post'); + r.add('DELETE', '/users/:id', 'del'); + r.build(); + expect(r.match('GET', '/users/42')!.value).toBe('get'); + expect(r.match('POST', '/users/42')!.value).toBe('post'); + expect(r.match('DELETE', '/users/42')!.value).toBe('del'); + expect(r.match('PUT', '/users/42')).toBeNull(); + }); + + it('static + dynamic in different methods does not cross-contaminate', () => { + const r = new Router(); + r.add('GET', '/health', 'health'); + r.add('POST', '/users/:id', 'post-user'); + r.build(); + expect(r.match('GET', '/health')!.value).toBe('health'); + expect(r.match('POST', '/users/42')!.value).toBe('post-user'); + expect(r.match('GET', '/users/42')).toBeNull(); + expect(r.match('POST', '/health')).toBeNull(); + }); +}); + +describe('shape-specialized wildcard matchImpl', () => { + it('matches /static prefix correctly', () => { + const r = new Router(); + r.add('GET', '/static/*path', 1); + r.add('GET', '/files/*filepath', 2); + r.build(); + expect(r.match('GET', '/static/js/app.bundle.js')).toEqual({ + value: 1, + params: { path: 'js/app.bundle.js' }, + meta: { source: MatchSource.Dynamic }, + }); + expect(r.match('GET', '/files/img/logo.png')).toEqual({ + value: 2, + params: { filepath: 'img/logo.png' }, + meta: { source: MatchSource.Dynamic }, + }); + }); + + it('captures empty for star wildcard at exact prefix (no trailing slash)', () => { + const r = new Router(); + r.add('GET', '/static/*path', 1); + r.build(); + const m = r.match('GET', '/static'); + expect(m).not.toBeNull(); + expect(m!.params).toEqual({ path: '' }); + }); + + it('rejects bogus URL with no leading slash', () => { + const r = new Router(); + r.add('GET', '/static/*path', 1); + r.build(); + expect(r.match('GET', 'static/foo')).toBeNull(); + expect(r.match('GET', '')).toBeNull(); + }); + + it('strips trailing slash before probe (default option)', () => { + const r = new Router(); + r.add('GET', '/static/*path', 1); + r.build(); + expect(r.match('GET', '/static/foo/')!.params).toEqual({ path: 'foo' }); + }); + + it('treats query string as part of path (caller strips ?)', () => { + const r = new Router(); + r.add('GET', '/static/*path', 1); + r.build(); + expect(r.match('GET', '/static/foo?v=1')!.params).toEqual({ path: 'foo?v=1' }); + }); + + it('rejects when method does not match', () => { + const r = new Router(); + r.add('GET', '/static/*path', 1); + r.build(); + expect(r.match('POST', '/static/foo')).toBeNull(); + }); + + it('captures arbitrarily long wildcard suffixes without any length cap', () => { + const r = new Router(); + r.add('GET', '/static/*path', 1); + r.build(); + const long = 'x'.repeat(100); + expect(r.match('GET', '/static/' + long)!.params).toEqual({ path: long }); + }); + + it('captures arbitrarily long single-segment wildcards', () => { + const r = new Router(); + r.add('GET', '/files/*filepath', 1); + r.build(); + const long = 'x'.repeat(256); + expect(r.match('GET', '/files/' + long)!.params).toEqual({ filepath: long }); + }); + + it('multi-wildcard rejects exact prefix and bare-prefix paths', () => { + const r = new Router(); + r.add('GET', '/api/*rest+', 1); + r.build(); + expect(r.match('GET', '/api/x')!.params).toEqual({ rest: 'x' }); + expect(r.match('GET', '/api/')).toBeNull(); + expect(r.match('GET', '/api')).toBeNull(); + }); +}); + +describe('shape specialization gating', () => { + it('disables specialization when more than one method is active', () => { + const r = new Router(); + r.add('GET', '/static/*path', 1); + r.add('POST', '/upload/*filepath', 2); + r.build(); + const impl = getRouterInternals(r).matchImpl as { toString: () => string }; + expect(impl.toString()).toContain('mcByMethod[method]'); + expect(r.match('GET', '/static/foo')!.value).toBe(1); + expect(r.match('POST', '/upload/bar')!.value).toBe(2); + }); + + it('disables specialization when cache is enabled', () => { + const r = new Router({}); + r.add('GET', '/static/*path', 1); + r.build(); + const impl = getRouterInternals(r).matchImpl as { toString: () => string }; + expect(impl.toString()).toContain('hitCacheByMethod'); + }); + + it('uses the closure-captured activeBucket fast path when only one method is active', () => { + const r = new Router(); + r.add('GET', '/static/*path', 1); + r.add('GET', '/health', 2); + r.build(); + const impl = getRouterInternals(r).matchImpl as { toString: () => string }; + expect(impl.toString()).toContain('activeBucket'); + }); +}); + +describe('walker wildcard tail across tiers', () => { + it('iterative walker — star wildcard at leaf accepts non-empty + empty', () => { + const r = new Router(); + r.add('GET', '/files/*path', 'files'); + r.build(); + expect(r.match('GET', '/files/a/b/c.txt')?.value).toBe('files'); + expect(r.match('GET', '/files/single')?.value).toBe('files'); + expect(r.match('GET', '/files')?.value).toBe('files'); + }); + + it('factored walker — star wildcard sharedNext leaf (1500 tenants)', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/files/*path`, `wild-${i}`); + } + r.build(); + expect(r.match('GET', '/tenant-0/files/a/b')?.value).toBe('wild-0'); + expect(r.match('GET', '/tenant-1499/files/x/y/z')?.value).toBe('wild-1499'); + expect(r.match('GET', '/tenant-9999/files/x')).toBeNull(); + }); + + it('prefixed-factor walker — star wildcard past the prefix chain', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/api/${i}/files/*path`, `api-wild-${i}`); + } + r.build(); + expect(r.match('GET', '/api/0/files/a')?.value).toBe('api-wild-0'); + expect(r.match('GET', '/api/750/files/deep/nested')?.value).toBe('api-wild-750'); + expect(r.match('GET', '/api/9999/files/x')).toBeNull(); + }); + + it('multi-prefix factor walker — wildcard tail under each prefix', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/users/${i}/files/*path`, `u-w-${i}`); + r.add('GET', `/api/${i}/files/*path`, `a-w-${i}`); + } + r.build(); + expect(r.match('GET', '/users/0/files/a/b')?.value).toBe('u-w-0'); + expect(r.match('GET', '/api/1499/files/x')?.value).toBe('a-w-1499'); + expect(r.match('GET', '/users/9999/files/x')).toBeNull(); + }); + + it('multi-prefix factor — one child has internal prefix chain, the other factors directly', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/users/v1/${i}/posts/:id`, `u-v1-${i}`); + r.add('GET', `/api/${i}/files/:name`, `a-${i}`); + } + r.build(); + expect(r.match('GET', '/users/v1/0/posts/42')?.value).toBe('u-v1-0'); + expect(r.match('GET', '/users/v1/1499/posts/x')?.value).toBe('u-v1-1499'); + expect(r.match('GET', '/api/0/files/a')?.value).toBe('a-0'); + expect(r.match('GET', '/api/1499/files/z')?.value).toBe('a-1499'); + expect(r.match('GET', '/users/v2/0/posts/42')).toBeNull(); + }); +}); + +describe('codegen — :param followed by multi-wildcard tail (`/x/:id/*rest+`)', () => { + it('emits the param + multi-wildcard terminal branch and matches with both params populated', () => { + const r = new Router(); + r.add('GET', '/users/:id/*rest+', 'h'); + r.build(); + + const m = r.match('GET', '/users/42/files/a.txt')!; + expect(m).not.toBeNull(); + expect(m.value).toBe('h'); + expect(m.params.id).toBe('42'); + expect(m.params.rest).toBe('files/a.txt'); + + expect(r.match('GET', '/users/42')).toBeNull(); + expect(r.match('GET', '/users/42/')).toBeNull(); + }); +}); + +describe('walker root edge cases', () => { + it('root-only static handler', () => { + const r = new Router(); + r.add('GET', '/', 'root'); + r.build(); + expect(r.match('GET', '/')?.value).toBe('root'); + expect(r.match('GET', '/anything')).toBeNull(); + }); + + it('root wildcard /*all matches everything including /', () => { + const r = new Router(); + r.add('GET', '/*all', 'catch-all'); + r.build(); + expect(r.match('GET', '/anything')?.value).toBe('catch-all'); + expect(r.match('GET', '/a/b/c')?.value).toBe('catch-all'); + expect(r.match('GET', '/')?.value).toBe('catch-all'); + }); + + it('root + leaf coexist', () => { + const r = new Router(); + r.add('GET', '/', 'root'); + r.add('GET', '/users/:id', 'user'); + r.build(); + expect(r.match('GET', '/')?.value).toBe('root'); + expect(r.match('GET', '/users/42')?.value).toBe('user'); + }); +}); + +describe('static + dynamic precedence at same position', () => { + it('static literal wins over param at the same segment', () => { + const r = new Router(); + r.add('GET', '/users/me', 'me'); + r.add('GET', '/users/:id', 'detail'); + r.build(); + expect(r.match('GET', '/users/me')?.value).toBe('me'); + expect(r.match('GET', '/users/42')?.value).toBe('detail'); + }); + + it('deeper nested precedence', () => { + const r = new Router(); + r.add('GET', '/api/v1/users', 'list'); + r.add('GET', '/api/v1/users/:id', 'one'); + r.add('GET', '/api/v1/:resource', 'generic'); + r.build(); + expect(r.match('GET', '/api/v1/users')?.value).toBe('list'); + expect(r.match('GET', '/api/v1/users/42')?.value).toBe('one'); + expect(r.match('GET', '/api/v1/posts')?.value).toBe('generic'); + }); + + it('three-way precedence: static literal + param + nested wildcard', () => { + const r = new Router(); + r.add('GET', '/x/me', 'static-me'); + r.add('GET', '/x/:id', 'param-id'); + r.add('GET', '/x/:id/files/*rest', 'wild-rest'); + r.build(); + expect(r.match('GET', '/x/me')?.value).toBe('static-me'); + expect(r.match('GET', '/x/other')?.value).toBe('param-id'); + expect(r.match('GET', '/x/abc/files/a/b/c')?.value).toBe('wild-rest'); + }); +}); + +describe('match.params edge values', () => { + it('empty string param value (not allowed by walker)', () => { + const r = new Router(); + r.add('GET', '/users/:id', 'h'); + r.build(); + expect(r.match('GET', '/users//')).toBeNull(); + expect(r.match('GET', '/users/')).toBeNull(); + }); + + it('long param value', () => { + const r = new Router(); + r.add('GET', '/users/:id', 'h'); + r.build(); + const long = 'x'.repeat(2000); + expect(r.match('GET', `/users/${long}`)?.params['id']).toBe(long); + }); + + it('decoded param value (percent-encoded)', () => { + const r = new Router(); + r.add('GET', '/users/:name', 'h'); + r.build(); + expect(r.match('GET', '/users/foo%20bar')?.params['name']).toBe('foo bar'); + expect(r.match('GET', '/users/%E4%B8%80')?.params['name']).toBe('一'); + }); +}); + +describe('factored walker shared-subtree shapes', () => { + it('walks a paramChild + tester (regex-constrained) inside shared subtree', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/users/:id(\\d+)`, `tenant-${i}`); + } + r.build(); + expect(r.match('GET', '/tenant-0/users/42')?.value).toBe('tenant-0'); + expect(r.match('GET', '/tenant-0/users/42')?.params.id).toBe('42'); + expect(r.match('GET', '/tenant-1499/users/9999')?.value).toBe('tenant-1499'); + expect(r.match('GET', '/tenant-0/users/abc')).toBeNull(); + }); + + it('walks a multi-wildcard terminal inside shared subtree (multi origin rejects empty tail)', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/files/*tail+`, `multi-${i}`); + } + r.build(); + expect(r.match('GET', '/tenant-0/files/a/b/c')?.value).toBe('multi-0'); + expect(r.match('GET', '/tenant-0/files/a/b/c')?.params.tail).toBe('a/b/c'); + expect(r.match('GET', '/tenant-1499/files/x')?.value).toBe('multi-1499'); + expect(r.match('GET', '/tenant-0/files')).toBeNull(); + expect(r.match('GET', '/tenant-0/files/')).toBeNull(); + }); + + it('walks a star-wildcard terminal inside shared subtree (zero or more)', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/assets/*path`, `star-${i}`); + } + r.build(); + expect(r.match('GET', '/tenant-0/assets/style.css')?.value).toBe('star-0'); + expect(r.match('GET', '/tenant-0/assets/a/b/c.css')?.params.path).toBe('a/b/c.css'); + const empty = r.match('GET', '/tenant-0/assets'); + expect(empty?.value).toBe('star-0'); + expect(empty?.params.path).toBe(''); + }); + + it('walks a multi-static-children Record sibling group inside shared subtree', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/users/profile`, `profile-${i}`); + r.add('GET', `/tenant-${i}/users/settings`, `settings-${i}`); + r.add('GET', `/tenant-${i}/users/billing`, `billing-${i}`); + } + r.build(); + expect(r.match('GET', '/tenant-0/users/profile')?.value).toBe('profile-0'); + expect(r.match('GET', '/tenant-0/users/settings')?.value).toBe('settings-0'); + expect(r.match('GET', '/tenant-1499/users/billing')?.value).toBe('billing-1499'); + expect(r.match('GET', '/tenant-0/users/unknown')).toBeNull(); + }); + + it('walks a deep singleChildKey chain inside shared subtree', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/api/v1/items/:id`, `item-${i}`); + } + r.build(); + expect(r.match('GET', '/tenant-0/api/v1/items/42')?.value).toBe('item-0'); + expect(r.match('GET', '/tenant-1499/api/v1/items/x')?.value).toBe('item-1499'); + expect(r.match('GET', '/tenant-0/api/v1/items')).toBeNull(); + expect(r.match('GET', '/tenant-0/api/wrong/items/42')).toBeNull(); + }); + + it('walks a staticPrefix-compacted chain inside shared subtree', () => { + const r = new Router(); + for (let i = 0; i < 1500; i++) { + r.add('GET', `/tenant-${i}/api/v1/users/items/:id`, `compact-${i}`); + } + r.build(); + expect(r.match('GET', '/tenant-0/api/v1/users/items/42')?.value).toBe('compact-0'); + expect(r.match('GET', '/tenant-0/api/v1/users/items/42')?.params.id).toBe('42'); + expect(r.match('GET', '/tenant-0/api/v2/users/items/42')).toBeNull(); + expect(r.match('GET', '/tenant-0/api/v1/users')).toBeNull(); + }); +}); diff --git a/packages/router/test/router-combinations.test.ts b/packages/router/test/router-combinations.test.ts deleted file mode 100644 index d8b83cc..0000000 --- a/packages/router/test/router-combinations.test.ts +++ /dev/null @@ -1,305 +0,0 @@ -import { describe, it, expect } from 'bun:test'; - -import { Router } from '../src/router'; -import { RouterError } from '../src/error'; - -// ── Helpers ── - -function catchRouterError(fn: () => void): RouterError { - try { - fn(); - } catch (e) { - expect(e).toBeInstanceOf(RouterError); - return e as RouterError; - } - throw new Error('Expected RouterError to be thrown'); -} - -describe('Router combinations', () => { - // ── Option × Cache (4 tests) ── - - describe('option × cache', () => { - it('should use lowered cache key when caseSensitive=false + cache enabled', () => { - const router = new Router({ caseSensitive: false, enableCache: true }); - router.add('GET', '/users/:id', 'val'); - router.build(); - - const r1 = router.match('GET', '/Users/123'); - expect(r1).not.toBeNull(); - expect(r1!.meta.source).toBe('dynamic'); - - const r2 = router.match('GET', '/USERS/123'); - expect(r2).not.toBeNull(); - expect(r2!.meta.source).toBe('cache'); - expect(r2!.params.id).toBe('123'); - }); - - it('should share cache entry for trailing-slash and non-trailing-slash paths when ignoreTrailingSlash + cache', () => { - const router = new Router({ ignoreTrailingSlash: true, enableCache: true }); - router.add('GET', '/api/:id', 'val'); - router.build(); - - const r1 = router.match('GET', '/api/42/'); - expect(r1).not.toBeNull(); - expect(r1!.meta.source).toBe('dynamic'); - - const r2 = router.match('GET', '/api/42'); - expect(r2).not.toBeNull(); - expect(r2!.value).toBe('val'); - expect(r2!.meta.source).toBe('cache'); - }); - - it('should store decoded params in cache and return decoded on cache hit when decodeParams + cache', () => { - const router = new Router({ decodeParams: true, enableCache: true }); - router.add('GET', '/items/:name', 'val'); - router.build(); - - const r1 = router.match('GET', '/items/hello%20world'); - expect(r1).not.toBeNull(); - expect(r1!.params.name).toBe('hello world'); - expect(r1!.meta.source).toBe('dynamic'); - - const r2 = router.match('GET', '/items/hello%20world'); - expect(r2).not.toBeNull(); - expect(r2!.params.name).toBe('hello world'); - expect(r2!.meta.source).toBe('cache'); - }); - - it('should store optional param defaults in cache and return them on cache hit', () => { - const router = new Router({ - optionalParamBehavior: 'setUndefined', - enableCache: true, - }); - router.add('GET', '/items/:id?', 'val'); - router.build(); - - const r1 = router.match('GET', '/items'); - expect(r1).not.toBeNull(); - expect('id' in r1!.params).toBe(true); - expect(r1!.params.id).toBeUndefined(); - - const r2 = router.match('GET', '/items'); - expect(r2).not.toBeNull(); - expect(r2!.meta.source).toBe('cache'); - expect('id' in r2!.params).toBe(true); - expect(r2!.params.id).toBeUndefined(); - }); - }); - - // ── Option × Option Pipeline (3 tests) ── - - describe('option × option pipeline', () => { - it('should strip trailing slash when ignoreTrailingSlash=true', () => { - const router = new Router({ - ignoreTrailingSlash: true, - }); - router.add('GET', '/api/:id', 'val'); - router.build(); - - const result = router.match('GET', '/api/42/'); - expect(result).not.toBeNull(); - expect(result!.params.id).toBe('42'); - }); - - it('should not match trailing slash when ignoreTrailingSlash=false', () => { - const router = new Router({ - ignoreTrailingSlash: false, - }); - router.add('GET', '/api/:id', 'val'); - router.build(); - - const r1 = router.match('GET', '/api/42/'); - expect(r1).toBeNull(); - - const r2 = router.match('GET', '/api/42'); - expect(r2).not.toBeNull(); - expect(r2!.params.id).toBe('42'); - }); - - it('should return raw params when decodeParams=false', () => { - const router = new Router({ - decodeParams: false, - }); - router.add('GET', '/items/:name', 'val'); - router.build(); - - const result = router.match('GET', '/items/hello%20world'); - expect(result).not.toBeNull(); - expect(result!.params.name).toBe('hello%20world'); - }); - }); - - // ── Option × Route Type (6 tests) ── - - describe('option × route type', () => { - it('should match lowered input against regex param when caseSensitive=false', () => { - const router = new Router({ caseSensitive: false }); - router.add('GET', '/users/:id{\\d+}', 'val'); - router.build(); - - const result = router.match('GET', '/USERS/42'); - expect(result).not.toBeNull(); - expect(result!.params.id).toBe('42'); - }); - - it('should treat stripped trailing slash as optional param absent when ignoreTrailingSlash + optional param', () => { - const router = new Router({ - ignoreTrailingSlash: true, - optionalParamBehavior: 'setUndefined', - }); - router.add('GET', '/items/:id?', 'val'); - router.build(); - - const result = router.match('GET', '/items/'); - expect(result).not.toBeNull(); - expect('id' in result!.params).toBe(true); - expect(result!.params.id).toBeUndefined(); - }); - - it('should capture empty suffix when ignoreTrailingSlash strips wildcard trailing slash', () => { - const router = new Router({ ignoreTrailingSlash: true }); - router.add('GET', '/files/*', 'val'); - router.build(); - - const result = router.match('GET', '/files/'); - expect(result).not.toBeNull(); - expect(result!.params['*']).toBe(''); - }); - - it('should not decode wildcard suffix (raw URL remainder)', () => { - const router = new Router({ - decodeParams: true, - }); - router.add('GET', '/files/*path', 'val'); - router.build(); - - const result = router.match('GET', '/files/a%20b/c'); - expect(result).not.toBeNull(); - expect(result!.params.path).toBe('a%20b/c'); - }); - - it('should cache each optional param variant separately (absent vs present)', () => { - const router = new Router({ - optionalParamBehavior: 'setUndefined', - enableCache: true, - }); - router.add('GET', '/items/:id?', 'val'); - router.build(); - - // Present - const r1 = router.match('GET', '/items/42'); - expect(r1).not.toBeNull(); - expect(r1!.params.id).toBe('42'); - - // Absent - const r2 = router.match('GET', '/items'); - expect(r2).not.toBeNull(); - expect('id' in r2!.params).toBe(true); - expect(r2!.params.id).toBeUndefined(); - - // Cache hits preserve distinct values - const r3 = router.match('GET', '/items/42'); - expect(r3!.meta.source).toBe('cache'); - expect(r3!.params.id).toBe('42'); - - const r4 = router.match('GET', '/items'); - expect(r4!.meta.source).toBe('cache'); - expect(r4!.params.id).toBeUndefined(); - }); - - it('should strip query string before dynamic param extraction', () => { - const router = new Router(); - router.add('GET', '/api/:id', 'val'); - router.build(); - - const result = router.match('GET', '/api/42?key=value&foo=bar'); - expect(result).not.toBeNull(); - expect(result!.params.id).toBe('42'); - }); - }); - - // ── Triple+ / Mega Combinations (3 tests) ── - - describe('triple+ combinations', () => { - it('should apply caseSensitive=false + ignoreTrailingSlash + cache as triple transform with consistent cache key', () => { - const router = new Router({ - caseSensitive: false, - ignoreTrailingSlash: true, - enableCache: true, - }); - router.add('GET', '/api/:id', 'val'); - router.build(); - - const r1 = router.match('GET', '/API/42/'); - expect(r1).not.toBeNull(); - expect(r1!.meta.source).toBe('dynamic'); - - const r2 = router.match('GET', '/Api/42'); - expect(r2).not.toBeNull(); - expect(r2!.meta.source).toBe('cache'); - expect(r2!.params.id).toBe('42'); - }); - - it('should match correctly with remaining options enabled simultaneously', () => { - const router = new Router({ - caseSensitive: false, - ignoreTrailingSlash: true, - decodeParams: true, - enableCache: true, - cacheSize: 10, - maxSegmentLength: 256, - optionalParamBehavior: 'setUndefined', - regexSafety: { mode: 'error' }, - regexAnchorPolicy: 'silent', - }); - router.add('GET', '/api/:category/:id?', 'val'); - router.build(); - - const result = router.match('GET', '/API/Products/42/'); - expect(result).not.toBeNull(); - expect(result!.params.category).toBe('products'); - expect(result!.params.id).toBe('42'); - - const r2 = router.match('GET', '/api/tools'); - expect(r2).not.toBeNull(); - expect(r2!.params.category).toBe('tools'); - expect('id' in r2!.params).toBe(true); - expect(r2!.params.id).toBeUndefined(); - }); - - it('should store empty-string defaults in cache when optionalParamBehavior=setEmptyString + cache', () => { - const router = new Router({ - optionalParamBehavior: 'setEmptyString', - enableCache: true, - }); - router.add('GET', '/items/:id?', 'val'); - router.build(); - - const r1 = router.match('GET', '/items'); - expect(r1).not.toBeNull(); - expect(r1!.params.id).toBe(''); - - const r2 = router.match('GET', '/items'); - expect(r2).not.toBeNull(); - expect(r2!.meta.source).toBe('cache'); - expect(r2!.params.id).toBe(''); - }); - }); - - // ── Error Combinations (1 test) ── - - describe('error combinations', () => { - it('should still error on long segment in match', () => { - const router = new Router({ - maxSegmentLength: 10, - }); - router.add('GET', '/api/:id', 'val'); - router.build(); - - const longSeg = 'a'.repeat(20); - - const err = catchRouterError(() => router.match('GET', `/api/${longSeg}`)); - expect(err.data.kind).toBe('segment-limit'); - }); - }); -}); diff --git a/packages/router/test/router-errors.test.ts b/packages/router/test/router-errors.test.ts deleted file mode 100644 index fc5ded7..0000000 --- a/packages/router/test/router-errors.test.ts +++ /dev/null @@ -1,308 +0,0 @@ -import { describe, it, expect } from 'bun:test'; - -import { Router } from '../src/router'; -import { RouterError } from '../src/error'; - -// ── Helpers ── - -function catchRouterError(fn: () => void): RouterError { - try { - fn(); - } catch (e) { - expect(e).toBeInstanceOf(RouterError); - return e as RouterError; - } - throw new Error('Expected RouterError to be thrown'); -} - -function fillMethodsToLimit(router: Router): void { - for (let i = 0; i < 25; i++) { - router.add(`CUSTOM_${i}` as any, `/limit-${i}`, `limit-${i}`); - } -} - -describe('Router errors', () => { - it('should throw RouterError kind=\'router-sealed\' when add called after build', () => { - const router = new Router(); - router.add('GET', '/x', 'x'); - router.build(); - - const err = catchRouterError(() => router.add('GET', '/y', 'y')); - expect(err.data.kind).toBe('router-sealed'); - expect(err.data.path).toBe('/y'); - expect(err.data.method).toBe('GET'); - }); - - it('should throw RouterError kind=\'not-built\' when match called before build', () => { - const router = new Router(); - router.add('GET', '/x', 'x'); - - const err = catchRouterError(() => router.match('GET', '/x')); - expect(err.data.kind).toBe('not-built'); - }); - - it('should throw for duplicate method+path (route-duplicate)', () => { - const router = new Router(); - router.add('GET', '/x', 'first'); - - const err = catchRouterError(() => router.add('GET', '/x', 'second')); - expect(err.data.kind).toBe('route-duplicate'); - }); - - it('should throw for conflicting wildcard after param (route-conflict)', () => { - const router = new Router(); - router.add('GET', '/users/:id', 'by-id'); - - const err = catchRouterError(() => router.add('GET', '/users/*', 'by-wildcard')); - expect(err.data.kind).toBe('route-conflict'); - }); - - it('should throw with registeredCount on addAll fail-fast', () => { - const router = new Router(); - router.add('GET', '/existing', 'existing'); - - const err = catchRouterError(() => router.addAll([ - ['POST', '/new', 'new'], - ['GET', '/existing', 'duplicate'], - ])); - - expect(err.data.registeredCount).toBe(1); - }); - - it('should throw with registeredCount=0 when addAll first entry fails', () => { - const router = new Router(); - router.add('GET', '/existing', 'existing'); - - const err = catchRouterError(() => router.addAll([ - ['GET', '/existing', 'duplicate'], - ['POST', '/other', 'other'], - ])); - - expect(err.data.registeredCount).toBe(0); - }); - - it('should throw kind=\'router-sealed\' when addAll called after build', () => { - const router = new Router(); - router.add('GET', '/x', 'x'); - router.build(); - - const err = catchRouterError(() => router.addAll([['POST', '/y', 'y']])); - expect(err.data.kind).toBe('router-sealed'); - expect(err.data.registeredCount).toBe(0); - }); - - it('should throw kind=\'method-limit\' when exceeding 32 methods', () => { - const router = new Router(); - fillMethodsToLimit(router); - - const err = catchRouterError(() => router.add('OVERFLOW_METHOD' as any, '/overflow', 'overflow')); - expect(err.data.kind).toBe('method-limit'); - }); - - it('should still match existing routes after sealed add-error', () => { - const router = new Router(); - router.add('GET', '/ok', 'ok'); - router.build(); - - expect(() => router.add('POST', '/new', 'new')).toThrow(RouterError); - - const matchResult = router.match('GET', '/ok'); - expect(matchResult).not.toBeNull(); - expect(matchResult!.value).toBe('ok'); - }); - - it('should throw for unclosed regex pattern (route-parse)', () => { - const router = new Router(); - - const err = catchRouterError(() => router.add('GET', '/users/:id{\\d+', 'invalid-regex')); - expect(err.data.kind).toBe('route-parse'); - }); - - it('should throw segment-limit error during match', () => { - const router = new Router({ - maxSegmentLength: 5, - }); - router.add('GET', '/ok', 'ok'); - router.build(); - - const err = catchRouterError(() => router.match('GET', '/very-long-segment-name')); - expect(err.data.kind).toBe('segment-limit'); - }); - - it('should include kind, message, path, method in error data', () => { - const router = new Router(); - router.build(); - - const err = catchRouterError(() => router.add('GET', '/after-seal', 'v')); - expect(err.data.kind).toBe('router-sealed'); - expect(typeof err.data.message).toBe('string'); - expect(err.data.path).toBe('/after-seal'); - expect(err.data.method).toBe('GET'); - }); - - it('should throw sealed error when add with method array called after build', () => { - const router = new Router(); - router.build(); - - const err = catchRouterError(() => router.add(['GET', 'POST'], '/z', 'z')); - expect(err.data.kind).toBe('router-sealed'); - }); - - it('should throw for param-duplicate in same path', () => { - const router = new Router(); - - const err = catchRouterError(() => router.add('GET', '/users/:id/posts/:id', 'dup-param')); - expect(err.data.kind).toBe('param-duplicate'); - }); - - it('should throw for wildcard not in last position (route-parse)', () => { - const router = new Router(); - - const err = catchRouterError(() => router.add('GET', '/files/*/extra', 'bad')); - expect(err.data.kind).toBe('route-parse'); - }); - - it('should include suggestion field for error kinds', () => { - // router-sealed - const r1 = new Router(); - r1.build(); - const sealed = catchRouterError(() => r1.add('GET', '/x', 'x')); - expect(typeof sealed.data.suggestion).toBe('string'); - - // not-built - const r2 = new Router(); - r2.add('GET', '/x', 'x'); - const notBuilt = catchRouterError(() => r2.match('GET', '/x')); - expect(typeof notBuilt.data.suggestion).toBe('string'); - - // route-duplicate - const r3 = new Router(); - r3.add('GET', '/x', 'x'); - const dup = catchRouterError(() => r3.add('GET', '/x', 'x2')); - expect(typeof dup.data.suggestion).toBe('string'); - }); - - it('should throw for conflicting wildcard names at same node', () => { - const router = new Router(); - router.add('GET', '/files/*path', 'files-get'); - - const err = catchRouterError(() => router.add('POST', '/files/*other', 'files-post')); - expect(err.data.kind).toBe('route-conflict'); - }); - - it('should throw sealed error with registeredCount=0 from addAll after build', () => { - const router = new Router(); - router.add('GET', '/x', 'x'); - router.build(); - - const err = catchRouterError(() => router.addAll([ - ['POST', '/a', 'a'], - ['PUT', '/b', 'b'], - ])); - expect(err.data.kind).toBe('router-sealed'); - expect(err.data.registeredCount).toBe(0); - }); - - it('should throw for route-conflict when static after wildcard', () => { - const router = new Router(); - router.add('GET', '/api/*', 'wildcard'); - - const err = catchRouterError(() => router.add('GET', '/api/specific', 'specific')); - expect(err.data.kind).toBe('route-conflict'); - }); - - it('should include method field in add error data', () => { - const router = new Router(); - router.add('GET', '/x', 'x'); - router.build(); - - const err = catchRouterError(() => router.add('POST', '/new', 'new')); - expect(err.data.method).toBe('POST'); - }); - - // ── NEW: NE additions (5 tests) ── - - it('should throw regex-unsafe error when pattern contains backreference', () => { - const router = new Router({ - regexSafety: { mode: 'error', forbidBackreferences: true }, - }); - - const err = catchRouterError(() => router.add('GET', '/users/:id{([a-z])\\1}', 'handler')); - expect(err.data.kind).toBe('regex-unsafe'); - expect(err.data.message).toContain('Backreferences'); - }); - - it('should throw regex-unsafe error when pattern exceeds maxLength', () => { - const router = new Router({ - regexSafety: { mode: 'error', maxLength: 5 }, - }); - - const err = catchRouterError(() => router.add('GET', '/users/:id{[a-zA-Z0-9]+}', 'handler')); - expect(err.data.kind).toBe('regex-unsafe'); - expect(err.data.message).toContain('exceeds limit'); - }); - - it('should not throw when regexSafety mode=warn for unsafe pattern', () => { - const warnings: string[] = []; - const router = new Router({ - regexSafety: { mode: 'warn', forbidBackreferences: true }, - onWarn: w => warnings.push(w.kind), - }); - router.add('GET', '/users/:id{([a-z])\\1}', 'handler'); - expect(warnings).toEqual(['regex-unsafe']); - }); - - it('should throw when regexSafety.validator throws during add()', () => { - const router = new Router({ - regexSafety: { - mode: 'warn', - validator: () => { - throw new Error('validator timeout simulation'); - }, - }, - }); - - expect(() => router.add('GET', '/users/:id{\\d+}', 'handler')).toThrow( - 'validator timeout simulation', - ); - }); - - it('should throw error when regexAnchorPolicy=error and pattern contains anchor', () => { - const router = new Router({ regexAnchorPolicy: 'error' }); - - const err = catchRouterError(() => router.add('GET', '/users/:id{^\\d+$}', 'handler')); - expect(err.data.kind).toBe('regex-anchor'); - expect(err.data.message).toContain('anchors'); - }); - - // ── 0-2: MAX_STACK_DEPTH / MAX_PARAMS guard ── - - it('should throw kind=\'segment-limit\' when path has more than 64 segments', () => { - const router = new Router(); - const path = '/' + Array.from({ length: 65 }, (_, i) => `s${i}`).join('/'); - - const err = catchRouterError(() => router.add('GET', path, 'deep')); - expect(err.data.kind).toBe('segment-limit'); - }); - - it('should not throw when path has exactly 64 segments', () => { - const router = new Router(); - const path = '/' + Array.from({ length: 64 }, (_, i) => `s${i}`).join('/'); - - router.add('GET', path, 'deep'); - }); - - it('should throw when path has more than 32 unique param segments', () => { - const router = new Router(); - const path = '/' + Array.from({ length: 33 }, (_, i) => `:p${i}`).join('/'); - - expect(() => router.add('GET', path, 'many-params')).toThrow(RouterError); - }); - - it('should not throw when path has exactly 32 unique param segments', () => { - const router = new Router(); - const path = '/' + Array.from({ length: 32 }, (_, i) => `:p${i}`).join('/'); - - router.add('GET', path, 'max-params'); - }); -}); diff --git a/packages/router/test/router.property.test.ts b/packages/router/test/router.property.test.ts deleted file mode 100644 index 1a08b92..0000000 --- a/packages/router/test/router.property.test.ts +++ /dev/null @@ -1,272 +0,0 @@ -import { describe, it, expect } from 'bun:test'; -import * as fc from 'fast-check'; -import { Router } from '../index'; -import { RouterError } from '../index'; -import type { MatchOutput } from '../index'; - -// ── Arbitraries ── - -const URL_SAFE_CHARS = 'abcdefghijklmnopqrstuvwxyz0123456789-'.split(''); -const ALPHA_CHARS = 'abcdefghijklmnopqrstuvwxyz'.split(''); -const ALPHANUM_CHARS = 'abcdefghijklmnopqrstuvwxyz0123456789'.split(''); - -/** Generates a URL-safe segment: 1-20 alphanumeric + hyphen chars, starting with a letter. */ -const segmentArb = fc - .array(fc.constantFrom(...URL_SAFE_CHARS), { minLength: 1, maxLength: 20 }) - .map((chars) => chars.join('')) - .filter((s) => /^[a-z]/.test(s)); - -/** Generates a valid static path like /seg1/seg2/seg3 with 1-5 segments. */ -const staticPathArb = fc - .array(segmentArb, { minLength: 1, maxLength: 5 }) - .map((segments) => '/' + segments.join('/')); - -/** Generates an HTTP method. */ -const methodArb = fc.constantFrom( - 'GET' as const, - 'POST' as const, - 'PUT' as const, - 'DELETE' as const, - 'PATCH' as const, - 'HEAD' as const, - 'OPTIONS' as const, -); - -/** Generates a param name: 2-10 lowercase letters. */ -const paramNameArb = fc - .array(fc.constantFrom(...ALPHA_CHARS), { minLength: 2, maxLength: 10 }) - .map((chars) => chars.join('')); - -/** Generates a param value: 1-20 URL-safe alphanumeric chars. */ -const paramValueArb = fc - .array(fc.constantFrom(...ALPHANUM_CHARS), { minLength: 1, maxLength: 20 }) - .map((chars) => chars.join('')); - -// ── Tests ── - -describe('Router — property-based tests', () => { - describe('round-trip invariant', () => { - it('any route added via add() -> build() -> match() returns the registered value', () => { - fc.assert( - fc.property( - fc.array( - fc.tuple(methodArb, staticPathArb), - { minLength: 1, maxLength: 20 }, - ), - (routes) => { - const seen = new Set(); - const uniqueRoutes: Array<{ method: typeof routes[0][0]; path: string; value: number }> = []; - - for (const [method, path] of routes) { - const key = `${method}:${path}`; - - if (!seen.has(key)) { - seen.add(key); - uniqueRoutes.push({ method, path, value: uniqueRoutes.length }); - } - } - - const router = new Router(); - - for (const { method, path, value } of uniqueRoutes) { - router.add(method, path, value); - } - - router.build(); - - for (const { method, path, value } of uniqueRoutes) { - const result = router.match(method, path); - expect(result).not.toBeNull(); - - if (result !== null) { - expect(result.value).toBe(value); - } - } - }, - ), - { numRuns: 100 }, - ); - }); - }); - - describe('params accuracy invariant', () => { - it('match() result params contain the correct extracted values for parametric routes', () => { - fc.assert( - fc.property( - fc - .uniqueArray(paramNameArb, { minLength: 1, maxLength: 3, comparator: 'SameValue' }) - .chain((paramNames) => - fc.tuple( - fc.constant(paramNames), - fc.tuple(...paramNames.map(() => paramValueArb)), - fc.array(segmentArb, { minLength: 0, maxLength: 2 }), - ), - ), - ([paramNames, paramValues, prefixSegments]) => { - const templateParts = [...prefixSegments, ...paramNames.map((n) => `:${n}`)]; - const template = '/' + templateParts.join('/'); - - const concreteParts = [...prefixSegments, ...paramValues]; - const concretePath = '/' + concreteParts.join('/'); - - const router = new Router(); - router.add('GET', template, 'handler'); - router.build(); - - const result = router.match('GET', concretePath); - expect(result).not.toBeNull(); - - if (result !== null) { - expect(result.value).toBe('handler'); - - for (let i = 0; i < paramNames.length; i++) { - expect(result.params[paramNames[i]!]).toBe(paramValues[i]); - } - } - }, - ), - { numRuns: 100 }, - ); - }); - }); - - describe('idempotency invariant', () => { - it('matching the same path N times returns identical results', () => { - fc.assert( - fc.property( - methodArb, - staticPathArb, - (method, path) => { - const router = new Router(); - router.add(method, path, 'stable-handler'); - router.build(); - - const results: Array | null> = []; - - for (let i = 0; i < 5; i++) { - const result = router.match(method, path); - results.push(result); - } - - const first = results[0]; - expect(first).not.toBeNull(); - - for (let i = 1; i < results.length; i++) { - const current = results[i]; - expect(current).not.toBeNull(); - - if (first != null && current != null) { - expect(current.value).toBe(first.value); - expect(current.params).toEqual(first.params); - } - } - }, - ), - { numRuns: 100 }, - ); - }); - - it('matching the same parametric path N times returns identical results', () => { - fc.assert( - fc.property( - paramValueArb, - (paramValue) => { - const router = new Router(); - router.add('GET', '/users/:id', 'user-handler'); - router.build(); - - const concretePath = `/users/${paramValue}`; - const results: Array | null> = []; - - for (let i = 0; i < 5; i++) { - const result = router.match('GET', concretePath); - results.push(result); - } - - const first = results[0]; - expect(first).not.toBeNull(); - - for (let i = 1; i < results.length; i++) { - const current = results[i]; - expect(current).not.toBeNull(); - - if (first != null && current != null) { - expect(current.value).toBe(first.value); - expect(current.params).toEqual(first.params); - } - } - }, - ), - { numRuns: 100 }, - ); - }); - }); - - describe('no-crash fuzz invariant', () => { - it('any arbitrary string passed to match() does not crash', () => { - const router = new Router({ maxPathLength: 8192 }); - router.add('GET', '/users', 'users'); - router.add('GET', '/users/:id', 'user'); - router.add('GET', '/files/*path', 'files'); - router.add('POST', '/data', 'data'); - router.build(); - - fc.assert( - fc.property( - fc.string({ unit: 'grapheme', minLength: 0, maxLength: 500 }), - (arbitraryPath) => { - // Must not crash — either returns a result or throws RouterError - try { - const result = router.match('GET', arbitraryPath); - - if (result !== null) { - expect(result.value).toBeDefined(); - expect(result.params).toBeDefined(); - expect(result.meta).toBeDefined(); - } - } catch (e) { - // RouterError is expected for invalid paths - expect(e).toBeInstanceOf(RouterError); - const err = e as RouterError; - expect(typeof err.data.kind).toBe('string'); - expect(typeof err.data.message).toBe('string'); - } - }, - ), - { numRuns: 100 }, - ); - }); - - it('arbitrary strings with special characters never cause unhandled exceptions', () => { - const router = new Router({ maxPathLength: 8192 }); - router.add('GET', '/api/:version/resource', 'resource'); - router.add('GET', '/static/file', 'static'); - router.build(); - - fc.assert( - fc.property( - fc.oneof( - fc.string({ unit: 'grapheme', maxLength: 200 }).map((s) => '/' + encodeURIComponent(s)), - fc.array(fc.string({ unit: 'grapheme', minLength: 0, maxLength: 50 }), { minLength: 1, maxLength: 10 }) - .map((parts) => '/' + parts.join('/')), - fc.array(fc.constantFrom('a', '/', ':', '*', '.', '-', '%', '2', 'F'), { - minLength: 100, - maxLength: 500, - }).map((chars) => chars.join('')), - fc.string({ minLength: 1, maxLength: 200 }), - ), - (fuzzPath) => { - // Must not crash with unhandled exception - try { - router.match('GET', fuzzPath); - } catch (e) { - // Only RouterError is acceptable - expect(e).toBeInstanceOf(RouterError); - } - }, - ), - { numRuns: 100 }, - ); - }); - }); -}); diff --git a/packages/router/test/test-utils.ts b/packages/router/test/test-utils.ts new file mode 100644 index 0000000..86a2010 --- /dev/null +++ b/packages/router/test/test-utils.ts @@ -0,0 +1,121 @@ +import { isErr, type Err, type Result } from '@zipbul/result'; +import { expect } from 'bun:test'; + +import type { Router } from '../src/router'; +import type { MatchOutput, RouterErrorData } from '../src/types'; + +import { getRouterInternals } from '../internal'; +import { RouterError } from '../src/error'; +import { RouterErrorKind } from '../src/types'; + +export function expectOk(result: Result): T { + if (isErr(result)) { + throw new Error(`Expected Ok, got Err: ${JSON.stringify(result.data)}`); + } + return result; +} + +export function expectErrData(result: T | Err): E { + if (!isErr(result)) { + throw new Error('Expected Err, got Ok value'); + } + return result.data; +} + +export function expectErrorKind( + data: RouterErrorData, + kind: K, +): Extract { + expect(data.kind).toBe(kind); + if (data.kind !== kind) { + throw new Error(`Expected error kind ${kind}, got ${data.kind}`); + } + return data as Extract; +} + +export function expectMatch(output: MatchOutput | null): MatchOutput { + if (output === null) { + throw new Error('Expected a match, got null'); + } + return output; +} + +export function expectErrorData(value: unknown): RouterErrorData { + if (typeof value !== 'object' || value === null || !('kind' in value)) { + throw new Error('Expected RouterErrorData, got a non-error value'); + } + return value as RouterErrorData; +} + +export function expectNotErrorData(value: T | RouterErrorData): T { + expect(value).not.toHaveProperty('kind'); + if ('kind' in value) { + throw new Error(`Expected a non-error value, got RouterErrorData: ${JSON.stringify(value)}`); + } + return value as T; +} + +export function expectNotAlias(value: T | 'alias'): T { + expect(value).not.toBe('alias'); + if (value === 'alias') { + throw new Error("Expected a non-'alias' value, got 'alias'"); + } + return value; +} + +export function expectDefined(value: T | undefined): T { + expect(value).toBeDefined(); + if (value === undefined) { + throw new Error('Expected a defined value, got undefined'); + } + return value; +} + +export function catchRouterError(fn: () => void): RouterError { + try { + fn(); + } catch (e) { + expect(e).toBeInstanceOf(RouterError); + return e as RouterError; + } + throw new Error('Expected RouterError to be thrown'); +} + +export function firstBuildIssue(router: Router): RouterErrorData { + const err = catchRouterError(() => router.build()); + expect(err.data.kind).toBe(RouterErrorKind.RouteValidation); + if (err.data.kind !== RouterErrorKind.RouteValidation) { + throw err; + } + return err.data.errors[0]!.error; +} + +export function expectObject(value: string | T): T { + if (typeof value === 'string') { + throw new Error(`Expected object, got string: ${value}`); + } + return value; +} + +export function getRegistrationSnapshot(router: Router): { + handlers: T[]; + terminalSlab: Int32Array; + segmentTrees: ReadonlyArray; + staticByMethod: ReadonlyArray; +} { + const internals = getRouterInternals(router); + const snap = ( + internals.registration as unknown as { + snapshot: { + handlers: T[]; + terminalSlab: Int32Array; + segmentTrees: ReadonlyArray; + staticByMethod: ReadonlyArray; + } | null; + } + ).snapshot; + if (snap === null) { + throw new Error('Router not built — snapshot unavailable'); + } + return snap; +} diff --git a/packages/router/tsconfig.build.json b/packages/router/tsconfig.build.json deleted file mode 100644 index 8107646..0000000 --- a/packages/router/tsconfig.build.json +++ /dev/null @@ -1,13 +0,0 @@ -{ - "extends": "./tsconfig.json", - "compilerOptions": { - "noEmit": false, - "declaration": true, - "emitDeclarationOnly": true, - "verbatimModuleSyntax": false, - "outDir": "dist", - "paths": {} - }, - "include": ["index.ts", "src/**/*.ts"], - "exclude": ["**/*.spec.ts", "**/*.test.ts", "test"] -} diff --git a/packages/shared/CHANGELOG.md b/packages/shared/CHANGELOG.md index eca1cab..4a9d75b 100644 --- a/packages/shared/CHANGELOG.md +++ b/packages/shared/CHANGELOG.md @@ -17,7 +17,6 @@ ### Patch Changes - 665e37c: chore: quality audit across all public packages - - Add `sideEffects: false` and `publishConfig.provenance` to all packages - Add `.npmignore` to all packages - Expand npm keywords for better discoverability @@ -31,14 +30,12 @@ ### Patch Changes - 7e67e78: ### Breaking Changes - - `Cors.create()` now returns `Cors` directly and throws `CorsError` on invalid options (previously returned `Result`) - `Cors.handle()` now returns `Promise` and throws `CorsError` on origin function failure (previously returned `Promise>`) - `CorsError` is now a class extending `Error` (previously an interface) - New `CorsErrorData` interface replaces the old `CorsError` interface shape (internal use) ### @zipbul/shared - - `HttpHeader` and `HttpStatus` changed from `const enum` to `enum` to fix `verbatimModuleSyntax` compatibility ### Why minor (not major) @@ -49,17 +46,17 @@ ```typescript // Before - import { isErr } from "@zipbul/result"; - const result = Cors.create({ origin: "https://example.com" }); + import { isErr } from '@zipbul/result'; + const result = Cors.create({ origin: 'https://example.com' }); if (isErr(result)) { /* handle error */ } const cors = result; // After - import { CorsError } from "@zipbul/cors"; + import { CorsError } from '@zipbul/cors'; try { - const cors = Cors.create({ origin: "https://example.com" }); + const cors = Cors.create({ origin: 'https://example.com' }); } catch (e) { if (e instanceof CorsError) { /* handle error */ diff --git a/packages/shared/README.ko.md b/packages/shared/README.ko.md index ab2e2c4..5e23235 100644 --- a/packages/shared/README.ko.md +++ b/packages/shared/README.ko.md @@ -34,11 +34,11 @@ if (request.method === HttpMethod.Get) { } ``` -| Export | 설명 | -|:-------------|:--------------------------------------| +| Export | 설명 | +| :----------- | :------------------------------------------------------------ | | `HttpMethod` | 표준 HTTP 메서드 (`Get`, `Post`, `Put`, `Patch`, `Delete`, …) | -| `HttpHeader` | CORS 관련 HTTP 헤더 (Fetch Standard, 소문자 값) | -| `HttpStatus` | 공통 HTTP 상태 코드 (`Ok`, `NoContent`, …) | +| `HttpHeader` | CORS 관련 HTTP 헤더 (Fetch Standard, 소문자 값) | +| `HttpStatus` | 공통 HTTP 상태 코드 (`Ok`, `NoContent`, …) | > 열거형은 `const enum`입니다 — `isolatedModules: false` 환경에서는 컴파일 타임에 값이 **인라인**되어 런타임 비용이 없습니다. 툴체인별 동작은 [`const enum`에 대하여](#-const-enum에-대하여)를 참고하세요. @@ -48,13 +48,14 @@ if (request.method === HttpMethod.Get) { 모든 열거형은 `const enum`으로 선언되어 있으며, 툴체인에 따라 동작이 다릅니다: -| 환경 | 동작 | -|:-----|:-----| -| TypeScript (`isolatedModules: false`) | 컴파일 타임에 값이 **인라인** — 런타임 객체 없음 | -| 번들러 (Bun, esbuild, Vite) | **일반 enum** 취급 — 런타임 객체가 생성됨 | -| `isolatedModules: true` / `verbatimModuleSyntax: true` | import가 보존되며, 번들러가 빌드 타임에 해소 | +| 환경 | 동작 | +| :----------------------------------------------------- | :----------------------------------------------- | +| TypeScript (`isolatedModules: false`) | 컴파일 타임에 값이 **인라인** — 런타임 객체 없음 | +| 번들러 (Bun, esbuild, Vite) | **일반 enum** 취급 — 런타임 객체가 생성됨 | +| `isolatedModules: true` / `verbatimModuleSyntax: true` | import가 보존되며, 번들러가 빌드 타임에 해소 | 이것이 의미하는 바: + - **Bun 소비자**는 열거형을 정상적으로 사용 가능 — `bun build`가 해소를 처리 - **TypeScript 라이브러리 소비자**는 컴파일 타임 인라인의 이점을 누림 (런타임 비용 제로) - `.d.ts` 파일은 `const enum` 선언을 보존하여 다운스트림 소비자에게 전달 diff --git a/packages/shared/README.md b/packages/shared/README.md index 38a71a2..b2fe8f0 100644 --- a/packages/shared/README.md +++ b/packages/shared/README.md @@ -34,11 +34,11 @@ if (request.method === HttpMethod.Get) { } ``` -| Export | Description | -|:-------------|:-------------------------------------| +| Export | Description | +| :----------- | :----------------------------------------------------------------- | | `HttpMethod` | Standard HTTP methods (`Get`, `Post`, `Put`, `Patch`, `Delete`, …) | -| `HttpHeader` | CORS-related HTTP headers (Fetch Standard, lowercase values) | -| `HttpStatus` | Common HTTP status codes (`Ok`, `NoContent`, …) | +| `HttpHeader` | CORS-related HTTP headers (Fetch Standard, lowercase values) | +| `HttpStatus` | Common HTTP status codes (`Ok`, `NoContent`, …) | > Enums are `const enum` — with `isolatedModules: false`, values are **inlined at compile time** with zero runtime footprint. See [About `const enum`](#-about-const-enum) for toolchain-specific behavior. @@ -48,13 +48,14 @@ if (request.method === HttpMethod.Get) { All enums are declared as `const enum`, which has different behavior depending on your toolchain: -| Environment | Behavior | -|:------------|:---------| -| TypeScript (`isolatedModules: false`) | Values are **inlined** at compile time — no runtime object | -| Bundlers (Bun, esbuild, Vite) | Treated as **regular enums** — runtime object is emitted | +| Environment | Behavior | +| :----------------------------------------------------- | :--------------------------------------------------------- | +| TypeScript (`isolatedModules: false`) | Values are **inlined** at compile time — no runtime object | +| Bundlers (Bun, esbuild, Vite) | Treated as **regular enums** — runtime object is emitted | | `isolatedModules: true` / `verbatimModuleSyntax: true` | Import is preserved; the bundler resolves it at build time | This means: + - **Bun consumers** can use the enums normally — `bun build` handles the resolution - **TypeScript library consumers** get the benefit of compile-time inlining (zero runtime cost) - The `.d.ts` files preserve the `const enum` declarations for downstream consumers diff --git a/packages/shared/bunfig.toml b/packages/shared/bunfig.toml index 1c5a1a6..5432b2f 100644 --- a/packages/shared/bunfig.toml +++ b/packages/shared/bunfig.toml @@ -3,10 +3,7 @@ onlyFailures = true coverage = true coverageReporter = ["text", "lcov"] coverageThreshold = 0.95 -coveragePathIgnorePatterns = [ - "node_modules/**", - "dist/**" -] +coveragePathIgnorePatterns = ["node_modules/**", "dist/**"] [test.reporter] dots = true diff --git a/packages/shared/package.json b/packages/shared/package.json index 23bd510..7c75f52 100644 --- a/packages/shared/package.json +++ b/packages/shared/package.json @@ -2,31 +2,32 @@ "name": "@zipbul/shared", "version": "0.0.11", "description": "Type-safe HTTP enums and constants (methods, headers, status codes) for TypeScript", - "license": "MIT", - "author": "Junhyung Park (https://github.com/parkrevil)", - "repository": { - "type": "git", - "url": "https://github.com/zipbul/toolkit", - "directory": "packages/shared" - }, - "bugs": "https://github.com/zipbul/toolkit/issues", - "homepage": "https://github.com/zipbul/toolkit/tree/main/packages/shared#readme", "keywords": [ - "enum", + "bun", "constants", - "shared", + "enum", "http", "http-header", - "http-status", "http-method", - "bun", + "http-status", + "shared", "typescript", "zipbul" ], - "engines": { - "bun": ">=1.0.0" + "homepage": "https://github.com/zipbul/toolkit/tree/main/packages/shared#readme", + "bugs": "https://github.com/zipbul/toolkit/issues", + "license": "MIT", + "author": "Junhyung Park (https://github.com/parkrevil)", + "repository": { + "type": "git", + "url": "https://github.com/zipbul/toolkit", + "directory": "packages/shared" }, + "files": [ + "dist" + ], "type": "module", + "sideEffects": false, "module": "dist/index.js", "types": "dist/index.d.ts", "exports": { @@ -35,14 +36,13 @@ "import": "./dist/index.js" } }, - "files": [ - "dist" - ], - "sideEffects": false, "publishConfig": { "provenance": true }, "scripts": { "build": "bun build index.ts --outdir dist --target bun --format esm --production && tsc -p tsconfig.build.json" + }, + "engines": { + "bun": ">=1.0.0" } } diff --git a/packages/shared/src/types/http-method.ts b/packages/shared/src/types/http-method.ts index 5bab66a..b683cd5 100644 --- a/packages/shared/src/types/http-method.ts +++ b/packages/shared/src/types/http-method.ts @@ -12,12 +12,4 @@ * const custom: HttpMethod = 'PROPFIND'; // custom token — still valid * ``` */ -export type HttpMethod = - | 'GET' - | 'HEAD' - | 'POST' - | 'PUT' - | 'PATCH' - | 'DELETE' - | 'OPTIONS' - | (string & {}); +export type HttpMethod = 'GET' | 'HEAD' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS' | (string & {}); diff --git a/scripts/publish.ts b/scripts/publish.ts index 628463d..5db6dcb 100644 --- a/scripts/publish.ts +++ b/scripts/publish.ts @@ -40,17 +40,17 @@ for (const entry of entries) { continue; } - if (!raw.includes('workspace:')) continue; + if (!raw.includes('workspace:')) {continue;} const pkg = JSON.parse(raw); let changed = false; for (const depField of ['dependencies', 'devDependencies', 'peerDependencies'] as const) { const deps = pkg[depField]; - if (!deps) continue; + if (!deps) {continue;} for (const [name, range] of Object.entries(deps)) { - if (typeof range !== 'string' || !range.startsWith('workspace:')) continue; + if (typeof range !== 'string' || !range.startsWith('workspace:')) {continue;} const realVersion = versionMap.get(name); if (!realVersion) { @@ -77,7 +77,7 @@ for (const entry of entries) { const pkgJsonPath = join(packagesDir, entry, 'package.json'); try { const pkg = JSON.parse(await readFile(pkgJsonPath, 'utf8')); - if (pkg.private) continue; + if (pkg.private) {continue;} await writeFile(join(packagesDir, entry, 'LICENSE'), license); console.log(`Copied LICENSE to ${pkg.name}`); } catch {