createId(), messaging.messages and messaging.tokenChanges in v7

[metalllus]

Hi, I was wondering what are the equivalents to these methods in Angularfire v.7

1. Firestore - createId() method which should create an id for a document to be created in Firestore
2. Messaging - tokenChanges() method which should return an observable emitting the token every time there is a change
3. Messaging - message() method which should return an observable emitting the push notifications from FCM.

I am migrating to v7 from v6 and I was not able to find equivalents for the methods above. Any help finding the new equivalents would be greatly appreciated.

[johnnycopes]

From what I can tell, the createId function is no longer available. However, looking at its source code, it seems like a pretty simple utility function that you can define yourself like so:

import { collection, doc } from '@angular/fire/firestore';

createId(): string {
  return doc(collection(FIRESTORE_INSTANCE, '_')).id;
}