A result from a
// Force a new message to be sent const result = await firebase.auth().signInWithPhoneNumber('#4423456789'); const user = await result.confirm('12345');
The phone number authentication operation's verification ID. This can be used along with the verification code to initialize a phone auth credential.
verificationId: string | null;
Finishes the sign in flow. Validates a code that was sent to the users device.
confirm(verificationCode: string): Promise<UserCredential | null>;