title: Can't find variable webkit on iOS 14.2
body: <p>I'm working on web app that based on AngularJS 1.7. The app is working well on Safari with iOS 12, 14.0, 14.1 - but since i've upgraded my iOS to 14.2/14.3 (checked on both of them) - i'm getting the following error :</p>
  <p><strong>ReferenceError: Can't find variable: webkit</strong></p>
  <p>It's appears when i'm trying to call webkit - like this :</p>
  <pre><code>  try {
      webkit.messageHandlers.callback.postMessage(JSON.stringify(userData));
      
    } catch (err) {
      console.log('There was some problem sending message native app to IOS');
  
    }
  </code></pre>
  <p>I'm not an iOS native developer - but i'm certain that the callback function hasn't changed, as i mentioned before - it's works well on previous iOS versions...any ideas?</p>