services/auth_service_interface library

1. saasfork_firebase_service package
2. documentation
3. services/auth_service_interface.dart

saasfork_firebase_service package

1. Libraries
2. auth_provider
3. cloud_functions/user_functions
4. exceptions/auth_exceptions
5. firebase_bootstrap
6. models/auth_state_model
7. saasfork_firebase_service
8. services/auth_service_interface
9. services/firebase_auth_service