MDX: Hotfix Windows EOL being ignored

.changeset/common-planes-win.md

@@ -0,0 +1,5 @@
+---
+'fumadocs-mdx': patch
+---
+
+Hotfix Windows EOL being ignored

packages/mdx/src/utils/fuma-matter.ts

@@ -1,58 +1,29 @@
 /**
  * Inspired by https://github.com/jonschlinkert/gray-matter
  */
-import { LRUCache } from 'lru-cache';
 import { load } from 'js-yaml';
 
-const cache = new LRUCache<string, Output>({
-  max: 200,
-});
-
 interface Output {
   matter: string;
   content: string;
   data: unknown;
 }
 
+const regex = /^---\r?\n(.+?)\r?\n---\r?\n/s;
+
 /**
  * parse frontmatter, it supports only yaml format
  */
 export function fumaMatter(input: string): Output {
-  if (input === '') {
-    return { data: {}, content: input, matter: '' };
-  }
-
-  const cached = cache.get(input);
-  if (cached) return cached;
-  const result = parseMatter(input);
-  cache.set(input, result);
-
-  // avoid mutation
-  return structuredClone(result);
-}
-
-const delimiter = '---';
-
-function parseMatter(str: string): Output {
-  const output: Output = { matter: '', data: {}, content: str };
-  const open = delimiter + '\n';
-  const close = '\n' + delimiter;
-
-  if (!str.startsWith(open)) {
+  const output: Output = { matter: '', data: {}, content: input };
+  const match = regex.exec(input);
+  if (!match) {
     return output;
   }
 
-  str = str.slice(open.length);
-  const len = str.length;
-
-  let closeIdx = str.indexOf(close);
-  if (closeIdx === -1) {
-    closeIdx = len;
-  }
-
   // get the raw front-matter block
-  output.matter = str.slice(0, closeIdx);
-  output.content = str.slice(closeIdx + close.length);
+  output.matter = match[1];
+  output.content = input.slice(match[0].length);
 
   const loaded = load(output.matter);
   output.data = loaded ?? {};

packages/mdx/test/fixtures/index-async.output.js

@@ -1,7 +1,7 @@
 // @ts-nocheck -- skip type checking
-import * as _source from "./config"
 import { _runtimeAsync, buildConfig } from "fumadocs-mdx/runtime/async"
 const [err, _sourceConfig] = buildConfig(_source)
 if (!_sourceConfig) throw new Error(err)
 import { _runtime } from "fumadocs-mdx"
+import * as _source from "./config"
 export const docs = _runtimeAsync.doc<typeof _source.docs>([{"info":{"path":"index.mdx","absolutePath":"$cwd/packages/mdx/test/fixtures/index.mdx"},"data":{},"content":"# Hello World\n"}, {"info":{"path":"folder/test.mdx","absolutePath":"$cwd/packages/mdx/test/fixtures/folder/test.mdx"},"data":{},"content":""}], "docs", _sourceConfig)

packages/mdx/test/fixtures/index-sync.output.js

@@ -2,4 +2,5 @@
 import * as docs_1 from "./folder/test.mdx?collection=docs&hash=hash"
 import * as docs_0 from "./index.mdx?collection=docs&hash=hash"
 import { _runtime } from "fumadocs-mdx"
+import * as _source from "./config"
 export const docs = _runtime.doc<typeof _source.docs>([{ info: {"path":"index.mdx","absolutePath":"$cwd/packages/mdx/test/fixtures/index.mdx"}, data: docs_0 }, { info: {"path":"folder/test.mdx","absolutePath":"$cwd/packages/mdx/test/fixtures/folder/test.mdx"}, data: docs_1 }]);

packages/mdx/test/index.test.ts

@@ -5,6 +5,7 @@ import { z } from 'zod';
 import { ValidationError } from '@/utils/schema';
 import { generateJS } from '@/map/generate';
 import { defineCollections } from '@/config';
+import { fumaMatter } from '@/utils/fuma-matter';
 
 test('format errors', async () => {
   const schema = z.object({
@@ -79,3 +80,49 @@ for (const { name, collection } of cases) {
     );
   });
 }
+
+test('parse frontmatter', () => {
+  expect(
+    fumaMatter(
+      '---\ntitle: hello world\ndescription: I love Fumadocs\n---\nwow looks cool.',
+    ),
+  ).toMatchInlineSnapshot(`
+    {
+      "content": "wow looks cool.",
+      "data": {
+        "description": "I love Fumadocs",
+        "title": "hello world",
+      },
+      "matter": "title: hello world
+    description: I love Fumadocs",
+    }
+  `);
+
+  expect(
+    fumaMatter(
+      '---\r\ntitle: hello world\r\ndescription: I love Fumadocs\r\n---\r\nwow looks cool.',
+    ),
+  ).toMatchInlineSnapshot(`
+    {
+      "content": "wow looks cool.",
+      "data": {
+        "description": "I love Fumadocs",
+        "title": "hello world",
+      },
+      "matter": "title: hello world
+    description: I love Fumadocs",
+    }
+  `);
+
+  expect(fumaMatter('--- \ntitle: hello world\r\n---\r\nwow looks cool.'))
+    .toMatchInlineSnapshot(`
+    {
+      "content": "--- 
+    title: hello world
+    ---
+    wow looks cool.",
+      "data": {},
+      "matter": "",
+    }
+  `);
+});