Fix theme-check-disable-next-line inside tags

.changeset/fix-disable-next-line-raw-tags.md

@@ -0,0 +1,5 @@
+---
+'@shopify/theme-check-common': patch
+---
+
+Fix `theme-check-disable-next-line` not suppressing offenses when the following tag is nested inside a raw HTML tag (`<style>`, `<script>`, `<svg>`). Previously, the sibling-node lookup only checked for a `children` array, but nodes inside raw HTML tags are stored under a `nodes` property on the `RawMarkup` body, so the disable comment was silently ineffective in that context.

packages/theme-check-common/src/disabled-checks/index.spec.ts

@@ -281,6 +281,20 @@ ${buildComment('theme-check-enable')}
         expect(offenses).to.have.length(0);
       });
 
+      it('should disable the next line when nested inside a raw HTML tag like <style> or <script>', async () => {
+        for (const rawTag of ['style', 'script']) {
+          const file = `<${rawTag}>
+  {% # theme-check-disable-next-line %}
+  {% render 'something' %}
+  {% render 'other-thing' %}
+</${rawTag}>`;
+
+          const offenses = await check({ 'code.liquid': file }, checks);
+          expect(offenses).to.have.length(1);
+          expectRenderMarkupOffense(offenses, 'other-thing.liquid');
+        }
+      });
+
       it('should still report offenses in doc tags when disable-next-line is not present', async () => {
         const file = `{% doc %}
   @param baz - first param

packages/theme-check-common/src/disabled-checks/index.ts

@@ -185,6 +185,8 @@ function getNextNode(
     siblingNodes = parentNode.markup;
   } else if ('children' in parentNode) {
     siblingNodes = parentNode.children || [];
+  } else if ('nodes' in parentNode) {
+    siblingNodes = parentNode.nodes || [];
   }
 
   const currentNodeIdx = siblingNodes.findIndex((c) => c === node);