coriolis/src/sw.js

console.log('Hello from sw.js');

if (workbox) {
  workbox.skipWaiting();
  workbox.clientsClaim();
  console.log('Yay! Workbox is loaded 🎉');
  workbox.routing.registerRoute(
    new RegExp('https://fonts.(?:googleapis|gstatic).com/(.*)'),
    workbox.strategies.cacheFirst({
      cacheName: 'google-fonts',
      plugins: [
        new workbox.expiration.Plugin({
          maxEntries: 30
        }),
        new workbox.cacheableResponse.Plugin({
          statuses: [0, 200]
        })
      ]
    })
  );
  workbox.routing.registerRoute(
    /\.(?:png|gif|jpg|jpeg|svg)$/,
    workbox.strategies.cacheFirst({
      cacheName: 'images',
      plugins: [
        new workbox.expiration.Plugin({
          maxEntries: 60,
          maxAgeSeconds: 30 * 24 * 60 * 60 // 30 Days
        })
      ]
    })
  );
  workbox.routing.registerRoute(
    /\.(?:js|css)$/,
    workbox.strategies.staleWhileRevalidate({
      cacheName: 'static-resources'
    })
  );
  try {
    workbox.googleAnalytics.initialize();
  } catch (e) {
    console.log('Probably an ad-blocker');
  }
} else {
  console.log('Boo! Workbox didn\'t load 😬');
}