How to get ServiceWorkerRegistration object?

[iarmankhan]

Summary

I'm currently trying to implement FCM in my PWA and from the firebase docs it is said to have service worker with exactly name firebase-messaging-sw.js or to provide a ServiceWorkerRegistration object to getToken method.

Now, I can use the sw parameter in next-pwa to rename the output file and it is working but I think it would be better if I can get the object instead of renaming the whole file just for one thing.

Firebase getToken documentation: Here

Thank you

[shadowwalker]

You can use this to get the registration object

navigator.serviceWorker.getRegistrations().then(function(registrations) {
 for(let registration of registrations) {
  console.log(registration)
} })