feat: Add Android/Termux support

index.mjs

@@ -0,0 +1,48 @@
+
+import { fileURLToPath } from "node:url";
+import { arch, platform } from "node:process";
+
+
+const BASE_PACKAGE_NAME = "sqlite-vec";
+const ENTRYPOINT_BASE_NAME = "vec0";
+const supportedPlatforms = [["darwin","x64"],["linux","x64"],["darwin","arm64"],["win32","x64"],["linux","arm64"],["android","arm64"]];
+
+const invalidPlatformErrorMessage = `Unsupported platform for ${BASE_PACKAGE_NAME}, on a ${platform}-${arch} machine. Supported platforms are (${supportedPlatforms
+  .map(([p, a]) => `${p}-${a}`)
+  .join(",")}). Consult the ${BASE_PACKAGE_NAME} NPM package README for details.`;
+
+const extensionNotFoundErrorMessage = packageName => `Loadble extension for ${BASE_PACKAGE_NAME} not found. Was the ${packageName} package installed?`;
+
+function validPlatform(platform, arch) {
+  return (
+    supportedPlatforms.find(([p, a]) => platform === p && arch === a) !== undefined
+  );
+}
+function extensionSuffix(platform) {
+  if (platform === "win32") return "dll";
+  if (platform === "darwin") return "dylib";
+  return "so";
+}
+function platformPackageName(platform, arch) {
+  let os = platform === "win32" ? "windows" : platform;
+  if (os === "android") os = "linux";
+  return `${BASE_PACKAGE_NAME}-${os}-${arch}`;
+}
+
+function getLoadablePath() {
+  if (!validPlatform(platform, arch)) {
+    throw new Error(
+      invalidPlatformErrorMessage
+    );
+  }
+  const packageName = platformPackageName(platform, arch);
+  const loadablePath = fileURLToPath(import.meta.resolve(packageName + "/" + ENTRYPOINT_BASE_NAME + "." + extensionSuffix(platform)));
+  return loadablePath;
+}
+
+function load(db) {
+  const p = getLoadablePath();
+  db.loadExtension(p.replace(/\.so$/, ''));
+}
+
+export {getLoadablePath, load};