Recommended Package for Sending Push Notifications to Mobile Apps (APNs, FCM)

I am looking for a single, reliable package to send push notifications to mobile apps, supporting both Apple Push Notification Service (APNs) and Firebase Cloud Messaging (FCM). Ideally, the package should be easy to integrate, well-documented, and capable of handling the nuances of both platforms.

If anyone could recommend a solution that you’ve found effective in your projects? Any insights on setup and usage would also be appreciated.