firebase-auth-google-fb

firebase-auth-fb.js

const provider = new firebase.auth.FacebookAuthProvider();
firebase
  .auth()
  .signInWithPopup(provider)
  .then((result) => {
    var credential = result.credential;
    var user = result.user;
    var accessToken = credential.accessToken;
  })
  .catch((error) => {
    var errorCode = error.code;
    var errorMessage = error.message;
    var email = error.email;
    var credential = error.credential;
  });