text: /**
   * Copyright (c) 2015-present, Facebook, Inc.
   * All rights reserved.
   *
   * This source code is licensed under the BSD-style license found in the
   * LICENSE file in the root directory of this source tree. An additional grant
   * of patent rights can be found in the PATENTS file in the same directory.
   */
  'use strict';
  
  const fs = require('fs');
  const path = require('path');
  
  /**
   * @param  {String} folder Folder to seek in
   * @return {String}
   */
  module.exports = function findAndroidAppFolder(folder) {
    const flat = 'android';
    const nested = path.join('android', 'app');
  
    if (fs.existsSync(path.join(folder, nested))) {
      return nested;
    }
  
    if (fs.existsSync(path.join(folder, flat))) {
      return flat;
    }
  
    return null;
  };
  