Apple auth provider implementation. Currently this is iOS only.
For Apple Authentication please see our @invertase/react-native-apple-authentication library which integrates well with Firebase and provides Firebase + Apple Auth examples.
firebase.auth.AppleAuthProvider;
Try and obtain a #MultiFactorResolver instance based on an error. Returns null if no resolver object could be found.
Return the #MultiFactorUser instance for the current user.
A PhoneMultiFactorGenerator interface.
firebase.auth.X