title: react dynamic import using a variable doesn't work
body: <p>With React, can anyone explain me why the dynamic import fail when we use a variable ?</p>
  
  <pre class="lang-js prettyprint-override"><code>// Do not work
  let module = "./DynamicComponent";
  import(module).then(ModuleLoaded =&gt; {})
  </code></pre>
  
  <pre class="lang-js prettyprint-override"><code>// Works
  import("./DynamicComponent").then(ModuleLoaded =&gt; {})
  </code></pre>
  
  <p>I tried to refresh the browser cache but nothing change.</p>