wrbapp/frontend/public/firebase-messaging-sw.js

self.addEventListener('notificationclick', (event) => {
    console.log('On notification click: ', event.notification.tag);
    event.notification.close();
  
    // This looks to see if the current is already open and
    // focuses if it is
    event.waitUntil(clients.matchAll({
      type: "window"
    }).then((clientList) => {
      for (const client of clientList) {
        if (client.url === '/news' && 'focus' in client)
          return client.focus();
      }
      if (clients.openWindow)
        return clients.openWindow('/news');
    }));
});

importScripts('https://www.gstatic.com/firebasejs/9.2.0/firebase-app-compat.js');
importScripts('https://www.gstatic.com/firebasejs/9.2.0/firebase-messaging-compat.js');

const firebaseConfig = {
    apiKey: "AIzaSyCtHFyfCRkBt8MX5LPFogBi8ssKSypkW0g",
    authDomain: "wrbapp.firebaseapp.com",
    projectId: "wrbapp",
    storageBucket: "wrbapp.appspot.com",
    messagingSenderId: "160377508482",
    appId: "1:160377508482:web:f651ccf2b242daf4879a9b",
    measurementId: "G-31HEXDSVPZ"
};
  
const app = firebase.initializeApp(firebaseConfig);
const messaging = firebase.messaging();