text: /**
   *
   *  Online store PWA sample.
   *  Copyright 2017 Google Inc. All rights reserved.
   *
   *  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
   *
   *      https://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
   *
  */
  
  export default function updateOnlineStatus(event) {
    document.body.classList.toggle('offline', !navigator.onLine);
    document.querySelectorAll('.add-to-cart').forEach((btn) => {
      if (navigator.onLine) {
        btn.removeAttribute('disabled');
      } else {
        btn.disabled = true;
      }
    });
  }
  