text: /**
   * Copyright (c) Facebook, Inc. and its affiliates.
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
   *
   * 
   * @format
   */
  'use strict';
  
  var PREFIX = 'client:';
  
  function generateClientID(id, storageKey, index) {
    var key = id + ':' + storageKey;
  
    if (index != null) {
      key += ':' + index;
    }
  
    if (key.indexOf(PREFIX) !== 0) {
      key = PREFIX + key;
    }
  
    return key;
  }
  
  function isClientID(id) {
    return id.indexOf(PREFIX) === 0;
  }
  
  var localID = 0;
  
  function generateUniqueClientID() {
    return "".concat(PREFIX, "local:").concat(localID++);
  }
  
  module.exports = {
    generateClientID: generateClientID,
    generateUniqueClientID: generateUniqueClientID,
    isClientID: isClientID
  };