title: Testcafe Selector.exists doesn&#39;t return a boolean
body: <p>I want to do some action in case <code>Selector('#particularButton-view').exists</code> is <code>true</code> and some other action in case is <code>false</code>.</p>
  
  <p>The problem is that it doesn't return a boolean. It returns some object. It's made to be used like this:</p>
  
  <pre><code>testController.expect(Selector('#particularButton-view').exists).ok()
  </code></pre>
  
  <p>How can I do to perform some action in each case?</p>