title: Check if a webapp has React, Angular or Vue installed
body: <p>Is there a trivial way to see what client-side libraries an application is using when everything is minified/compressed? I am looking at all of the javascript passed to the client from the server but with everything compressed/minified, I'm not necessarily able to tell if one of the three popular client-side frameworks is used. For jQuery, it's as trivial as doing the following in the console:</p>
  
  <pre><code>&gt; jQuery.fn.jquery
  "3.2.1"
  </code></pre>
  
  <p>Is there a similar method for checking the other three "big" frameworks?</p>