firebase-messaging-sw.js

importScripts('https://www.gstatic.com/firebasejs/4.8.1/firebase-app.js');
importScripts('https://www.gstatic.com/firebasejs/4.8.1/firebase-messaging.js');

import messaging from 'config/firebase'

messaging.setBackgroundMessageHandler(function (payload) {
    console.log('We Received a background message ', payload);

    const notificationTitle = 'New Background Message Title';
    const notificationOptions = {
        body: 'Fallback Message body.',
        icon: 'logo.png'
    };

    return self.registration.showNotification(notificationTitle,
        notificationOptions);
});

self.addEventListener("notificationclick", function (event) {
    const clickedNotification = event.notification;
    clickedNotification.close();
   })