// Give the service worker access to Firebase Messaging.
// Note that you can only use Firebase Messaging here, other Firebase libraries
// are not available in the service worker.
importScripts('https://www.gstatic.com/firebasejs/4.6.2/firebase-app.js')
importScripts('https://www.gstatic.com/firebasejs/4.6.2/firebase-messaging.js')

// Initialize the Firebase app in the service worker by passing in the
// messagingSenderId.
firebase.initializeApp({
    'messagingSenderId': '948017499394'
})

// Retrieve an instance of Firebase Messaging so that it can handle background
// messages.
const messaging = firebase.messaging()