How do I call fetchSignInMethodsForEmail() from Firebase Auth

Question

I have a PSK (Polymer Starter Kit) PWA build with polymerfire, I want to call fetchSignInMethodsForEmail() from Firebase Auth. I have tried the following but with error.

firebase.auth().fetchSignInMethodsForEmail(email).then((methods) => {
  // Do something
});

with the error Uncaught TypeError: firebase.auth(...).fetchSignInMethodsForEmail is not a function.

I have tried the following as well with no luck, i.e.

firebase.auth.fetchSignInMethodsForEmail(email);
firebase.$.auth.fetchSignInMethodsForEmail(email); // Assume firebase-auth with id of 'auth'

Answer 1

For people using the new modular version it's done like this:

import {  fetchSignInMethodsForEmail } from 'firebase/auth';

    fetchSignInMethodsForEmail(auth, email).then((result) => {
      console.log(result);
    });