diff --git a/scripts/post-build/complete-path.js b/scripts/post-build/complete-path.js
index 960b52feb..5e5a447fe 100644
--- a/scripts/post-build/complete-path.js
+++ b/scripts/post-build/complete-path.js
@@ -105,20 +105,6 @@ module.exports.completePath = async (formats) => {
   )
 }
 
-const splitSource = (() => {
-  const splitRegex = /^([\w-]+|@[\w-]+\/[\w-]+)(?:\/(.*))?$/
-  /**
-   * @param {string} source
-   * @return {[string, string] | null}
-   */
-  return (source) => {
-    const matched = splitRegex.exec(source)
-    if (!matched)
-      return null
-    return matched.slice(1)
-  }
-})()
-
 /**
  * @param {string} source
  * @param {string} currentDir
@@ -134,47 +120,11 @@ function parseSource(source, currentDir, suffix) {
         : joinPath(source, `index${suffix}`)
       : source + suffix
   }
-  else if (
-    source.includes('date-fns')
-    && source !== 'date-fns-tz/formatInTimeZone'
-  ) {
-    // Xxxx date-fns for its poor compatibility
-    const [pkgName, subpath] = splitSource(source) || []
-    return pkgName === null || subpath === null
-      ? null
-      : guessFullPath(pkgName, subpath)
-  }
   else {
     return source
   }
 }
 
-/**
- * @param {string} pkgName
- * @param {string} subpath
- * @return {string | null}
- */
-function guessFullPath(pkgName, subpath) {
-  const pkgPath = require.resolve(path.posix.join(pkgName, 'package.json'))
-  const pkgRootPath = path.dirname(pkgPath)
-
-  let parsedSource = null
-  const sourcePath = path.join(pkgRootPath, subpath)
-  if (fs.existsSync(`${sourcePath}.js`)) {
-    parsedSource = joinPath(pkgName, `${subpath}.js`)
-  }
-  else if (fs.existsSync(`${sourcePath}.mjs`)) {
-    parsedSource = joinPath(pkgName, `${subpath}.mjs`)
-  }
-  else if (fs.existsSync(path.join(sourcePath, 'index.js'))) {
-    parsedSource = joinPath(pkgName, subpath, 'index.js')
-  }
-  else if (fs.existsSync(path.join(sourcePath, 'index.mjs'))) {
-    parsedSource = joinPath(pkgName, subpath, 'index.mjs')
-  }
-  return parsedSource
-}
-
 function replaceExtname(filePath, ext) {
   const oldExt = path.extname(filePath)
   if (!oldExt)