sw.js

importScripts('node_modules/sw-toolbox/sw-toolbox.js');

self.addEventListener('install', (event) => {
  self.skipWaiting();
});

self.addEventListener('activate', (event) => {
  event.waitUntil(self.clients.claim());
});

toolbox.options.debug = true;

toolbox.precache(['index.html']);

toolbox.router.get('/', toolbox.cacheFirst);

toolbox.router.get('/(.*)', toolbox.cacheFirst, {origin: 'https://graph.facebook.com'});

toolbox.router.get('/(.*)', toolbox.cacheFirst, {origin: 'https://cdnjs.cloudflare.com/'});