title: await is a reserved word in typescript reactJs?
body: <p>I wants to use async await. But it is giving <strong>await is a reserved word</strong>  error. My Code is:</p>
  
  <pre><code>public componentDidMount() {
      this.drags();
  }
  private drags = async () =&gt; {
         const e = ReactDOM.findDOMNode(this.container);
      if (e) {
        e.addEventListener("mousedown", (event: any) =&gt; {
          await this.dragElement.classList.add("draggable");
          await this.resizeElement.classList.add("resizable");
         }
      }
  </code></pre>