fix: pass raw frontmatter to when parsing markdown in glob loader (#12789)

Author: ascorbic

.changeset/fresh-gifts-buy.md

@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Pass raw frontmatter to remark plugins in glob loader

packages/astro/src/content/loaders/glob.ts

@@ -171,7 +171,7 @@ export function glob(globOptions: GlobOptions): Loader {
 					try {
 						rendered = await render?.({
 							id,
-							data: parsedData,
+							data,
 							body,
 							filePath,
 							digest,

packages/astro/test/astro-markdown-plugins.test.js

@@ -120,6 +120,24 @@ describe('Astro Markdown plugins', () => {
 		testRemark(html);
 		testRehype(html, '#smartypants-test');
 	});
+
+	describe("content layer plugins", () => {
+		let fixture
+		before(async () => {
+			fixture = await loadFixture({
+				root: './fixtures/content-layer-remark-plugins/',
+			});
+			await fixture.build();
+		});
+
+		it('passes untransformed frontmatter to remark plugins', async () => {
+			const html = await fixture.readFile('/test1/index.html');
+			const $ = cheerio.load(html);
+			assert.equal($('p').text(), 'Not transformed');
+		});
+
+	});
+
 });
 
 function testRehype(html, headingId) {

packages/astro/test/fixtures/content-layer-remark-plugins/.gitignore

@@ -0,0 +1,24 @@
+# build output
+dist/
+# generated types
+.astro/
+
+# dependencies
+node_modules/
+
+# logs
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+
+
+# environment variables
+.env
+.env.production
+
+# macOS-specific files
+.DS_Store
+
+# jetbrains setting folder
+.idea/

packages/astro/test/fixtures/content-layer-remark-plugins/astro.config.mjs

@@ -0,0 +1,20 @@
+// @ts-check
+import { defineConfig } from 'astro/config';
+import mdx from '@astrojs/mdx';
+
+// https://astro.build/config
+export default defineConfig({
+  integrations: [mdx()],
+  markdown: {
+    remarkPlugins: [
+      function myRemarkPlugin() {
+        return function transformer(tree, file) {
+					tree.children.push({
+						type: 'paragraph',
+						children: [{ type: 'text', value: file?.data?.astro?.frontmatter?.addedByTransformer ? "Transformed" : "Not transformed" }],
+					});
+        };
+      },
+    ],
+  },
+});

packages/astro/test/fixtures/content-layer-remark-plugins/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "@test/content-layer-remark-plugins",
+  "type": "module",
+  "version": "0.0.1",
+  "private": true,
+  "scripts": {
+    "dev": "astro dev",
+    "build": "astro build",
+    "preview": "astro preview",
+    "astro": "astro"
+  },
+  "dependencies": {
+    "@astrojs/mdx": "workspace:*",
+    "astro": "workspace:*"
+  }
+}

packages/astro/test/fixtures/content-layer-remark-plugins/public/favicon.svg

@@ -0,0 +1,16 @@
+import { defineCollection, z } from 'astro:content';
+import { glob } from 'astro/loaders';
+
+const docs = defineCollection({
+  loader: glob({ pattern: '**/*.{md,mdx}', base: './src/content/docs' }),
+  schema: z
+    .object({
+      title: z.string(),
+    })
+    .transform((data) => ({
+      ...data,
+      someOtherField: 'Added by transform',
+    })),
+});
+
+export const collections = { docs };

packages/astro/test/fixtures/content-layer-remark-plugins/src/content.config.ts

@@ -0,0 +1,6 @@
+---
+title: Test Markdown
+foo: bar
+---
+
+# Test Markdown

packages/astro/test/fixtures/content-layer-remark-plugins/src/content/docs/test1.md

@@ -0,0 +1,8 @@
+---
+title: Test MDX
+foo: bar
+---
+
+Hello from MDX!
+
+[Markdown page](/test1)