Push eventListner in SW

pushEvent.txt

self.addEventListener('push', (event) => {
  let body
  if (event.data) {
    //You can set an original message by passing it on the event.
    body = event.data.text()
  } else {
    body = 'Default body'
  }
 
  const options = {
    body: body,
    icon: '/your icon image',
    vibrate: [100, 50, 100],
    data: {
      dateOfArrival: Date.now(),
      primaryKey: 1,
    },
  }
  event.waitUntil(
    self.registration.showNotification('Your Message Title',    
    options))
})