walk-file.js

/**
 * @param {string} dir file or folder path
 * @param {function} fileHandler hanlder function used for deal with file
 */
function walk(dir, fileHandler = (filePath) => filePath) {
  const fstats = fs.lstatSync(dir);
  if (fstats.isDirectory()) {
    const files = fs.readdirSync(dir);
    files.forEach((file) => {
      const filePath = path.join(dir, file);
      const stats = fs.lstatSync(filePath);
      if (stats.isDirectory()) {
        walk(filePath, fileHandler)
      } else {
        fileHandler(filePath)
      }
    })
  } else {
    fileHandler(dir)
  }
}