text: /*
   * Copyright 2020 Sergei Sovik <sergeisovik@yahoo.com>
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *		http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  'use strict';
  
  /**
   * @fileoverview This is an externs file.
   * @externs
   */
  
  /**
   * @suppress {duplicate}
   * @type {ServiceWorkerGlobalScope}
   */
  var self;
  
  /** @type {CacheStorage} */
  var caches;
  