I want to use the push notification feature for my app, but I don’t want to user the expo server to send my notification. If you want to user other services (like Firebase Cloud Message or Amazon Web Services: SNS), you need a device token. The problem is that the notification token given by Expo Notifications modules is custom to it. I learned recently that there is a way (undocumented) to get the raw token and use it to send Notification to your own services.
How do you access it? I check the Notification module of expo and it seems it use a nativeModules to get it.