text: /*
   * Copyright 2019 Google LLC
   *
   * 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.
   */
  
  let unsupported;
  
  const useSaveData = (initialSaveData = null) => {
    if (typeof navigator !== 'undefined' && 'connection' in navigator && 'saveData' in navigator.connection) {
      unsupported = false;
    } else {
      unsupported = true;
    }
  
    return {
      unsupported,
      saveData: unsupported
        ? initialSaveData
        : navigator.connection.saveData === true
    };
  };
  
  export { useSaveData };
  