title: Does .onAuthStateChanged method count against Firebase Authentication verification?
body: <p>So I'm trying to nail down all of the potential ways Firebase Authentication 'verifications' could rack up quickly against the <a href="https://firebase.google.com/pricing" rel="nofollow noreferrer">Firebase Pricing</a> plan.</p>
  
  <p>Please correct me if I'm wrong, but an auth verification counts against the pricing plan when:</p>
  
  <ul>
  <li>User successfully signs in</li>
  <li>User successfully creates an account</li>
  <li>NOT when a sign in/creation fails for some reason</li>
  </ul>
  
  <p>I can't find anything in the documentation about the firebase.auth().onAuthStateChanged() method counting against verification.</p>
  
  <p>To check if the auth state has changed wouldn't you also have to check if the user is verified? If the <a href="https://firebase.google.com/docs/auth/admin/manage-sessions" rel="nofollow noreferrer">refresh token has expired</a> due to account deleted/disabled or email/password updated the account would have to be re-verified.</p>
  
  <p>Is a 'verification' counted against the limit when .onAuthStateChanged() is ran at all?</p>