firebase.json

{
    "flutter": {
        "platforms": {
            "android": {
                "default": {
                    "projectId": "we-chat-75f13",
                    "appId": "1:288842837392:android:1353619813061d867a5715",
                    "fileOutput": "android/app/google-services.json"
                }
            },
            "dart": {
                "lib/firebase_options.dart": {
                    "projectId": "we-chat-75f13",
                    "configurations": {
                        "android": "1:288842837392:android:1353619813061d867a5715",
                        "ios": "1:288842837392:ios:f39c8dc31525a6687a5715",
                        "web": "1:288842837392:web:6ae5bafc6d7d4f407a5715"
                    }
                }
            }
        }
    }
}