Firebase crashlytics and push Notification without Cocospod

I am looking for some help to integrate Firebase Crashlytics and Push-Notification in my cocos project. I am already using Firebase Analytics using a plugin from SDKBOX. Now, I want to use the Crashlytics and Push-Notification services.

I would get some help on this topic. Thank you.

firebase provide a way integrate withou cocospod, maybe you can use this way.