homework-js/react/node_modules/workbox-navigation-preload/src/isSupported.ts

/*
  Copyright 2018 Google LLC

  Use of this source code is governed by an MIT-style
  license that can be found in the LICENSE file or at
  https://opensource.org/licenses/MIT.
*/

import './_version.js';


// Give TypeScript the correct global.
declare let self: ServiceWorkerGlobalScope;

/**
 * @return {boolean} Whether or not the current browser supports enabling
 * navigation preload.
 *
 * @memberof module:workbox-navigation-preload
 */
function isSupported(): boolean {
  return Boolean(self.registration && self.registration.navigationPreload);
}

export {isSupported};