Property 'messaging' does not exist on type 'AngularFireMessaging'
constructor(private angularFireMessaging: AngularFireMessaging) {
this.angularFireMessaging.messages.subscribe(
(_messaging: AngularFireMessaging) => {
_messaging.onMessage = _messaging.onMessage.bind(_messaging);
_messaging.onTokenRefresh = _messaging.onTokenRefresh.bind(_messaging);
}