I'm using Ionic 4 and AngularFire2 Messaging for Firebase Cloud Messaging notifications.
I'm trying to tell FCM what to do when the notification is clicked (or tapped) by the user. That should be done by the click_action for android and link for web push properties. I am not sure what to provide here for an Ionic app however?
Also it would be nice if I could set the time for how long a web push notification is visible on desktop, but I don't think there is an option for that.