Extract bucket and path from Google Cloud Storage URL

fromStorageUrl.js

/**
 * Convert Google Cloud Storage object url into an object with bucket and file path.
 */
function fromStorageUrl(url) {
  var tokens = RegExp('https://storage.googleapis.com/(.+?)/(.+)','g').exec(url);
  if (tokens === null) throw "Invalid Google Cloud Storage url.";
  
  return {
    'bucket': tokens[1],
    'file': tokens[2]
  };
}

console.log(fromStorageUrl('https://storage.googleapis.com/uploads.birdperson.com/some-path/to-a-file.mp3'));
// > Object { bucket: "uploads.birdperson.com", file: "some-path/to-a-file.mp3" }

Thanks a lot.