title: clicking on confirm button closes the swal
body: <p>hitting the confirm button closes the swal is this an expected behaviour? If so how can I implement the <a href="https://sweetalert2.github.io/" rel="nofollow noreferrer">loading example</a> shown in the examples? my swal code is</p>
  
  <pre><code>&lt;swal #saveSwal
  title="Are you sure?"
  text ="Do you want to save changes"
  cancelButtonColor="#d33"
  showCancelButton="true"
  cancelButtonText="No! Review"
  confirmButtonColor="#3085d6"
  confirmButtonText='Yes, Save progress'
  (confirm)="save()"
  [showLoaderOnConfirm]="true"
  
  [focusCancel]="true"&gt;
  </code></pre>
  
  <p>is there a way to keep the swal open and show the loading animation untill an async operation is compleeted ?</p>