Index
Constructors
Private constructor
Returns MultiFactorResolver
Properties
auth
The Auth instance used to sign in with the first factor.
hints
The list of hints for the second factors needed to complete the sign-in for the current session.
session
The session identifier for the current sign-in flow, which can be used to complete the second factor sign-in.
Methods
resolveSignIn
A helper function to help users complete sign in with a second factor using an firebase.auth.MultiFactorAssertion confirming the user successfully completed the second factor challenge.
Error Codes
- auth/invalid-verification-code
- Thrown if the verification code is not valid.
- auth/missing-verification-code
- Thrown if the verification code is missing.
- auth/invalid-verification-id
- Thrown if the credential is a firebase.auth.PhoneAuthProvider.credential and the verification ID of the credential is not valid.
- auth/missing-verification-id
- Thrown if the verification ID is missing.
- auth/code-expired
- Thrown if the verification code has expired.
- auth/invalid-multi-factor-session
- Thrown if the request does not contain a valid proof of first factor successful sign-in.
- auth/missing-multi-factor-session
- Thrown if The request is missing proof of first factor successful sign-in.
Parameters
assertion: MultiFactorAssertion
The multi-factor assertion to resolve sign-in with.
Returns Promise<UserCredential>
The promise that resolves with the user credential object.
The class used to facilitate recovery from firebase.auth.MultiFactorError when a user needs to provide a second factor to sign in.
firebase.auth().signInWithEmailAndPassword() .then(function(result) { // User signed in. No 2nd factor challenge is needed. }) .catch(function(error) { if (error.code == 'auth/multi-factor-auth-required') { var resolver = error.resolver; // Show UI to let user select second factor.var multiFactorHints = resolver.hints; } else { // Handle other errors. } }); // The enrolled second factors that can be used to complete// sign-in are returned in the `MultiFactorResolver.hints` list.// UI needs to be presented to allow the user to select a second factor// from that list.var selectedHint = // ; selected from multiFactorHintsvar phoneAuthProvider = new firebase.auth.PhoneAuthProvider(); var phoneInfoOptions = { multiFactorHint: selectedHint, session: resolver.session }; phoneAuthProvider.verifyPhoneNumber( phoneInfoOptions, appVerifier ).then(function(verificationId) { // store verificationID and show UI to let user enter verification code. }); // UI to enter verification code and continue.// Continue button click handlervar phoneAuthCredential = firebase.auth.PhoneAuthProvider.credential(verificationId, verificationCode); var multiFactorAssertion = firebase.auth.PhoneMultiFactorGenerator.assertion(phoneAuthCredential); resolver.resolveSignIn(multiFactorAssertion) .then(function(userCredential) { // User signed in. });