title: Missing the following properties from type 'EventTarget'
body: <p>Hello I have this piece of code in TypeScript</p>
  
  <pre><code> var btn  = document.getElementsByClassName("btn-up") as EventTarget;
   btn.addEventListener('click', (event) =&gt; {
   console.log('clickcc');
  })
  </code></pre>
  
  <p>And It throws me this error
  *  Type 'HTMLCollectionOf' is missing the following properties from type 'EventTarget': addEventListener, dispatchEvent, removeEventListener *</p>
  
  <p>Please how to fix it? </p>