title: How to support .closest in IE11
body: <p>I'm using svelte+rollup+rollup-plugin-polyfill</p>
  
  <blockquote>
    <p>SCRIPT438: Object doesn't support property or method 'closest'</p>
  </blockquote>
  
  <p>still occurs even though I include </p>
  
  <pre><code>polyfill(['@webcomponents/webcomponentsjs','element-closest']),
  </code></pre>
  
  <p>in my rollup.js.</p>
  
  <p>the call occurs in this code:</p>
  
  <pre><code>function onDocumentClick (e) {
      if (!e.target.closest('.autocomplete')) close();
  }
  </code></pre>
  
  <p>why the polyfill does not exist? and though, how to correctly use it? I'm thinking of just replacing .closest with one IE11 supports.</p>