PhoneAuthSnapshot
interface
A snapshot interface of the current phone auth state.
Example
firebase.auth().verifyPhoneNumber('+4423456789')
 .on('state_changed', (phoneAuthSnapshot) => {
   console.log('Snapshot state: ', phoneAuthSnapshot.state);
 });
Properties
code
</>The verification code. Will only be available if auto verification has taken place.
code: string | null;
verificationId
</>The verification ID to build a PhoneAuthProvider credential.
verificationId: string;
