stylelint-bundle-worker.js
function readdirStream (dir, options, internalOptions) {
  internalOptions.facade = streamFacade;

  let reader = new DirectoryReader(dir, options, internalOptions);
  return reader.stream;
}
function readdirStream (dir, options, internalOptions) {
  internalOptions.facade = streamFacade;

  let reader = new DirectoryReader(dir, options, internalOptions);
  return reader.stream;
}
Returns the {@link stream.Readable} of an asynchronous {@link DirectoryReader}.

@param {string} dir
@param {object} [options]
@param {object} internalOptions