title: JavaScript Promise.all - how to check resolve status?
body: <p>Let's say, I have an array of promises, each element beign an AJAX call for an image (png) of a view.</p>
  
  <pre><code>const images = Promise.all(views.map(view =&gt; {
     return fetch(`/sites/${siteId}/views/${view.id}/image/`);
  }));
  </code></pre>
  
  <p>Is there any possibility to check current status of promise resolution using Promise.all? If not, is there any other way?</p>
  
  <p>For example, if 10 / 20 images were downloaded, I would like to give user a feedback, that we have downloaded 50% images for him.</p>