https://app-isitech.web.app/firebase-messaging-sw.js

1importScripts('https://www.gstatic.com/firebasejs/4.8.1/firebase-app.js');
2importScripts('https://www.gstatic.com/firebasejs/4.8.1/firebase-messaging.js');
3
4firebase.initializeApp({
5    messagingSenderId: '948189380720'
6});
7var messaging = firebase.messaging();
8console.log("service-worker init");
9// If you would like to customize notifications that are received in the
10// background (Web app is closed or not in browser focus) then you should
11// implement this optional method.
12// [START background_handler]
13messaging.setBackgroundMessageHandler(function (payload) {
14    console.log('[firebase-messaging-sw.js] Received background message ', payload);
15    // Customize notification here
16    var notificationTitle = 'Background Message Title';
17    var notificationOptions = {
18        body: 'Background Message body.',
19        icon: '/firebase-logo.png'
20    };
21
22    return self.registration.showNotification(notificationTitle,
23        notificationOptions);
24});
25// [END background_handler]
26
27self.addEventListener('fetch', function (event) {
28
29})