rename-files.js

const fs = require('fs')
const path = require('path')

function logFiles(dir, excludes) {
  for (const fileName of fs.readdirSync(dir)) {
    const filePath = path.resolve(dir, fileName)
    const stats = fs.statSync(filePath)

    if (excludes.some(exclude => filePath.includes(exclude))) {
      continue
    }

    if (stats.isDirectory()) {
      logFiles(filePath, excludes)
    } else {
      if (filePath.includes('.js')) {
        const newFilePath = filePath.replace('.js', '.ts')
        fs.rename(filePath, newFilePath, () => {
          console.log(`RENAMED ${filePath} to ${newFilePath}`)
        })
      }
    }
  }
}

logFiles(`${__dirname}/random-folder`, ['random-folder-1', 'random-folder-2'])