Hello, i tried to implement push notification using firebase but after some errors my push notification dont come to pwa , or come but just when chrome is open, not in background, the files that i change:
quasar.conf.js > build

      chainWebpack(chain) {
        if (ctx.mode.pwa) {
          chain
            .plugin('copy-static-files')
            .use(require('copy-webpack-plugin'), [
              [{
                from: 'src-pwa/firebase-messaging-sw.js',
                to: '',
              }]
            ])
        }
      }

firebase-messaging-sw.js
firebaseConfig are my credentials

importScripts('https://www.gstatic.com/firebasejs/7.6.2/firebase-app.js');
importScripts('https://www.gstatic.com/firebasejs/7.6.2/firebase-messaging.js');

let firebaseApp = firebase.initializeApp(firebaseConfig);

const messaging = firebase.messaging();

messaging.setBackgroundMessageHandler(async payload => {
  console.log('[firebase-messaging-sw.js] Received background message ', payload);
  // It was something like this, I am using a different custom format
  return self.registration.showNotification(payload.data.title, payload.data);
});

boot/firebase.js
firebaseConfig are my credentials

import * as firebase from 'firebase/app'
import 'firebase/messaging'

firebase.initializeApp(firebaseConfig)

const messaging = firebase.messaging()

messaging.usePublicVapidKey('MY_KEY')

// Request Permission of Notifications
messaging.requestPermission().then(() => {
  console.log('Notification permission granted.')
  
  // Get Token
  messaging.getToken().then((token) => {
    console.log(token)
  })
}).catch((err) => {
  console.log('Unable to get permission to notify.', err)
})

messaging.onMessage(payload => {
  console.log('Message received.', payload);
});

someone can help me?