Firebase JS SDK - createUserWithEmailAndPassword raising Exception

[Sandy Ludosky]

Whenever I try to create a new user, I keep getting this error: 

TypeError: Cannot read properties of undefined (reading 'then')

Is it a major bug ? the promise never  fulfills with the user object.

I am using Firebase "^9.15.0"

[Frank van Puffelen]

Works for me: https://stackblitz.com/edit/auth-v9

Code:

const auth = getAuth();

createUserWithEmailAndPassword(auth, "us...@domain.com", "CorrectHorseBatteryStaple").then((credentials)=> {

  console.log(credentials);

  console.log(credentials.user);

}).catch((err) => {

  console.error(err);

})

Logs:

Initializing Firebase
UserCredentialImpl {user: UserImpl, providerId: null, _tokenResponse: {…}, operationType: 'signIn'}
UserImpl {providerId: 'firebase', proactiveRefresh: ProactiveRefresh, reloadUserInfo: {…}, reloadListener: null, uid: '9X2qcCSN9vU4K2IhBSWExW3Hlix1', …}

If it continues to not work for you, please share a similar repro of the problem.