packages/google_sign_in/google_sign_in_web/test/test_driver/src/test_utils.dart

// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'dart:convert';

String toBase64Url(String contents) {
  // Open the file
  return 'data:text/javascript;base64,' + base64.encode(utf8.encode(contents));
}