Duplicate call to render

index.html

    <script type="text/jsx">
      /** @jsx tevreact.createElement */
      /** In the comment above we are telling babel which function it should
      use the default is React.createElement and we want to use
      our own createElement function*/
      const appElement = (
          <div>
              <h1>Hello Tev, Have you watched John Wick</h1>
          </div>
      )
      tevreact.render(appElement, document.getElementById("app"));
      tevreact.render(appElement, document.getElementById("app"));
    </script>