title: Does calling useAuth function in Firebase always call to backend?
body: <p>I have this code where I'm building a user account with Firebase Authentication:</p>
  <pre class="lang-js prettyprint-override"><code>export default function Account() {
    const [user, loading, error] = useAuthState(getAuth())
    return (
      &lt;Layout&gt;
        &lt;Box sx={{ mt: &quot;3rem&quot; }}&gt;
          &lt;Typography variant=&quot;h2&quot;&gt;Welcome {user.displayName}!&lt;/Typography&gt;
        &lt;/Box&gt;
      &lt;/Layout&gt;
    )
  }
  
  </code></pre>
  <p>If I include this same model for each NextJS page, will the call to the Firebase backend happen for each time with <code>getAuth()</code>?</p>