title: IIS express not serving ES6 javascript modules
body: <p>I started using ES6 javascript modules in my ASP.NET MVC application but IIS express is refusing to serve javascript file of type <em>module</em> in <em>script</em> tag. I'm getting <strong>401 Unauthorized</strong>.</p>
  
  <pre><code>&lt;script src="~/Scripts/index.js" type="module"&gt;&lt;/script&gt;
  </code></pre>
  
  <p>When i remove <code>type="module"</code> from <code>script</code> tag then it works fine.</p>
  
  <p>Are request filters involved? Can you please help me set them right?</p>