Firebase auth.$createUserWithEmailAndPassword not working
<p>I have been following a course on Firebase, but quickly discovered a lot of things have changed. <a href="https://www.firebase.com/docs/web/libraries/angular/api.html#angularfire-users-and-authentication-createusercredentials" rel="nofollow noreferrer">https://www.firebase.com/docs/web/libraries/angular/api.html#angularfire-users-and-authentication-createusercredentials</a>
these docs are completely outdated.</p>

<p>Here I declare my firebase variables</p>

<pre><code>var ref = firebase.database().ref();
var firebasedata = $firebaseObject(ref);
var auth = $firebaseAuth();
</code></pre>

<p>Then I try to call this function </p>

<pre><code>this.register = function() {
  auth.$createUserWithEmailAndPassword({
    email: this.user.email, 
    password: this.user.password
  }).then(function(regUser) {
    $log.log(regUser);
  }).catch(function(error) {
    $log.log(error);
  });
};
</code></pre>

<p>But it throws this error: </p>

<blockquote>
  <p>code
  :
  "auth/argument-error"
  message
  :
  "createUserWithEmailAndPassword failed: First argument "email" must be a valid string."</p>
</blockquote>

<p>I have searched for answers to this problem but all I can find is updating my angularfire or firebase (which are both the latest version) or that this.user.email is not a string. When I do a</p>

<pre><code> console.log(this.user.email);
</code></pre>

<p>I can see it is a string containing a valid e-mail.</p>

<p>Any help into the right direction would be welcome!</p>