TypeScript resolve root path alias script

postbuild.js

import fs from 'fs'
import path from 'path'

function listJsFiles(dir) {
  return fs.readdirSync(path.resolve('.', dir)).reduce((files, file) => {
    let result = [...files]
    const filePath = path.join(dir, file)
    if (fs.lstatSync(filePath).isDirectory()) {
      result = result.concat(listJsFiles(filePath))
    }
    if (filePath.endsWith('.js')) {
      result = result.concat(filePath)
    }
    return result
  }, [])
}

function replaceModuleAlias(file, dir) {
  const relativeModule = path.relative(path.join(file, '..'), path.join(process.cwd(), dir))
  const fileData = fs.readFileSync(file).toString('utf-8')
  const replacingMatch = fileData.match(/require\("@\/(.*)"\)/gim)
  if (!replacingMatch) return null
  const toReplace = replacingMatch.map((toReplace) =>
    toReplace.replace('@/', (relativeModule && relativeModule + path.sep) || './')
  )
  return toReplace.reduce(
    (result, _, index) => result.replace(replacingMatch[index], toReplace[index]),
    fileData
  )
}

const distributionDirectory = './dist'
let filesChanged = 0

listJsFiles(distributionDirectory).forEach((file) => {
  const replaceData = replaceModuleAlias(file, distributionDirectory)
  if (replaceData) {
    fs.writeFileSync(file, replaceData, { encoding: 'utf-8' })
    filesChanged++
  }
})

console.log(`Changed ${filesChanged} files with module aliases`)