diff --git a/src/runtime/markdown-parser/frontmatter.ts b/src/runtime/markdown-parser/frontmatter.ts
deleted file mode 100644
index 23d6fdd34..000000000
--- a/src/runtime/markdown-parser/frontmatter.ts
+++ /dev/null
@@ -1,41 +0,0 @@
-import yaml from 'js-yaml'
-import flat from 'flat'
-
-const FRONTMATTER_DELIMITER = '---'
-
-export function stringifyFrontMatter (data: any, content: string = '') {
-  // flatten frontmatter data
-  // convert `parent: { child: ... }` into flat keys `parent.child`
-  data = flat.flatten(data, {
-    // preserve arrays and their contents as is and do not waltk through arrays
-    // flatten array will be like `parent.0.child` and `parent.1.child` with is not readable
-    safe: true
-  })
-
-  return [
-    FRONTMATTER_DELIMITER,
-    yaml.dump(data, { lineWidth: -1 }),
-    FRONTMATTER_DELIMITER,
-    content
-  ].join('\n')
-}
-
-export function parseFrontMatter (content: string) {
-  let data = {}
-  if (content.startsWith('---\n')) {
-    const idx = content.indexOf('\n---')
-    if (idx !== -1) {
-      const frontmatter = content.slice(4, idx)
-      if (frontmatter) {
-        data = yaml.load(frontmatter)
-        content = content.slice(idx + 4)
-      }
-    }
-  }
-
-  return {
-    content,
-    // unflatten frontmatter data. convert `parent.child` keys into `parent: { child: ... }`
-    data: flat.unflatten(data || {}, {}) as Record<string, any>
-  }
-}
diff --git a/src/runtime/markdown-parser/index.ts b/src/runtime/markdown-parser/index.ts
index 30acab2da..b310efb70 100644
--- a/src/runtime/markdown-parser/index.ts
+++ b/src/runtime/markdown-parser/index.ts
@@ -9,7 +9,7 @@ import rehypeSortAttributeValues from 'rehype-sort-attribute-values'
 import rehypeSortAttributes from 'rehype-sort-attributes'
 import rehypeRaw from 'rehype-raw'
 import { MarkdownOptions, Toc } from '../types'
-import { parseFrontMatter } from './frontmatter'
+import { parseFrontMatter } from './remark-mdc/frontmatter'
 import { generateToc } from './toc'
 import { contentHeading, generateBody } from './content'
 
@@ -92,4 +92,4 @@ function useExcerpt (content: string, delimiter = /<!--\s*?more\s*?-->/i) {
   return content
 }
 
-export * from './frontmatter'
+export * from './remark-mdc/frontmatter'
diff --git a/src/runtime/markdown-parser/remark-mdc/frontmatter.ts b/src/runtime/markdown-parser/remark-mdc/frontmatter.ts
index 201830ea9..59d63b91f 100644
--- a/src/runtime/markdown-parser/remark-mdc/frontmatter.ts
+++ b/src/runtime/markdown-parser/remark-mdc/frontmatter.ts
@@ -22,7 +22,7 @@ export function stringifyFrontMatter (data: any, content: string = '') {
 
 export function parseFrontMatter (content: string) {
   let data = {}
-  if (content.startsWith(FRONTMATTER_DELIMITER + '\n')) {
+  if (content.startsWith(FRONTMATTER_DELIMITER)) {
     const idx = content.indexOf('\n' + FRONTMATTER_DELIMITER)
     if (idx !== -1) {
       const frontmatter = content.slice(4, idx)