From dbbffa2487cd1f9899916baa166591248fb24334 Mon Sep 17 00:00:00 2001
From: Divyansh Singh <40380293+brc-dd@users.noreply.github.com>
Date: Sat, 11 Nov 2023 15:01:42 +0530
Subject: [PATCH] fix(build): remove frontmatter in md file inclusion

closes #3195
---
 .../e2e/markdown-extensions/markdown-extensions.test.ts      | 5 +++++
 __tests__/e2e/markdown-extensions/nested-include.md          | 4 ++++
 src/node/utils/processIncludes.ts                            | 5 ++++-
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/__tests__/e2e/markdown-extensions/markdown-extensions.test.ts b/__tests__/e2e/markdown-extensions/markdown-extensions.test.ts
index b7ba5c19df03..aa1f6ff2a195 100644
--- a/__tests__/e2e/markdown-extensions/markdown-extensions.test.ts
+++ b/__tests__/e2e/markdown-extensions/markdown-extensions.test.ts
@@ -274,4 +274,9 @@ describe('Markdown File Inclusion', () => {
     expect(trim(await p.nth(0).textContent())).toBe('This is a region')
     expect(trim(await p.nth(1).textContent())).toBe('This is after region')
   })
+
+  test('ignore frontmatter if range is not specified', async () => {
+    const p = page.locator('.vp-doc')
+    expect(await p.textContent()).not.toContain('title')
+  })
 })
diff --git a/__tests__/e2e/markdown-extensions/nested-include.md b/__tests__/e2e/markdown-extensions/nested-include.md
index eb7eb718240d..8b876c7805a6 100644
--- a/__tests__/e2e/markdown-extensions/nested-include.md
+++ b/__tests__/e2e/markdown-extensions/nested-include.md
@@ -1,3 +1,7 @@
+---
+title: Nested Include
+---
+
 <!--@include: ./foo.md-->
 
 ### After Foo
diff --git a/src/node/utils/processIncludes.ts b/src/node/utils/processIncludes.ts
index 43808ba4bbe6..0217769746c5 100644
--- a/src/node/utils/processIncludes.ts
+++ b/src/node/utils/processIncludes.ts
@@ -1,5 +1,6 @@
-import path from 'path'
 import fs from 'fs-extra'
+import matter from 'gray-matter'
+import path from 'path'
 import { slash } from '../shared'
 
 export function processIncludes(
@@ -30,6 +31,8 @@ export function processIncludes(
             endLine ? parseInt(endLine, 10) : undefined
           )
           .join('\n')
+      } else {
+        content = matter(content).content
       }
       includes.push(slash(includePath))
       // recursively process includes in the content