First pass at bundling web app into service. Working.

static/web/serviceWorker.js

@@ -0,0 +1,25 @@
+/* eslint-disable no-restricted-globals */
+self.addEventListener('activate', event => {
+  console.log('Owncast service worker activated', event);
+});
+
+self.addEventListener('install', event => {
+  console.log('installing Owncast service worker...', event);
+});
+
+self.addEventListener('push', event => {
+  const data = JSON.parse(event.data.text());
+  const { title, body, icon, tag } = data;
+  const options = {
+    title: title || 'Live!',
+    body: body || 'This live stream has started.',
+    icon: icon || '/logo/external',
+    tag,
+  };
+
+  event.waitUntil(self.registration.showNotification(options.title, options));
+});
+
+self.addEventListener('notificationclick', event => {
+  clients.openWindow('/');
+});