stylelint-bundle-worker.js
function readdirAsyncStat (dir, options, callback) {
  return readdirAsync(dir, options, callback, { stats: true });
}
function readdirAsyncStat (dir, options, callback) {
  return readdirAsync(dir, options, callback, { stats: true });
}
Aynchronous readdir (accepts an error-first callback or returns a {@link Promise}).
Results are an array of {@link fs.Stats} objects.

@param {string} dir
@param {object} [options]
@param {function} [callback]
@returns {Promise<fs.Stats[]>}