How to detect if push notifications are blocked on current website?

Question

I am using OneSignal and want to be able to detect current subscribtion state between those three:

• user is blocking notifications
• not subscribed
• subscribed

OneSignal API gives the isPushNotificationsEnabled function, but it only detects two states: pushes allowed or not.

I wonder if there's more general (outside of OneSignal API) method to detect that, at least in some browsers.

Answer 1

Solution turned out to be Notification.permission, which takes three states:

• default
• granted
• denied

And that's exactly what I needed.