How to reduce app size for iOS (unity+firebase)? 55MB -> 862.9 MB

After adding firebase into the project app size changed from 55M to 862.9 MB. Android build of the same project is 55.6 MB.

Code (JavaScript):

1.  
2. {
3.   "dependencies": {
4.     "com.google.external-dependency-manager": "1.2.153",
5.     "com.google.firebase.analytics": "6.14.0",
6.     "com.google.firebase.app": "6.14.0",
7.     "com.google.firebase.auth": "6.14.0",
8.     "com.google.firebase.crashlytics": "6.14.0",
9.     "com.google.firebase.firestore": "6.14.0",
10. ...
11.   }
12. }
13.  

Unity 2019.2

 

One of the many reasons i refuse to use Firebase

That seems extreme though. My guess is there's no code stripping enabled?

 

Stripping is on.
Maybe problem related to this - https://github.com/firebase/quickstart-unity/issues/547