x;
      }
    &lt;/style&gt;
  &lt;/head&gt;
  &lt;body&gt;
    &lt;div id=&quot;map&quot;&gt;&lt;/div&gt;
    &lt;script src=&quot;bundle.js&quot;&gt;&lt;/script&gt;
  &lt;/body&gt;
&lt;/html&gt;</code></pre>
<h2 id="creating-a-bundle">Creating a bundle</h2>
<p>With simple scripts you can introduce the commands <code>npm run build</code> and <code>npm start</code> to manually build your bundle and watch for changes, respectively. Add the following to the script section in <code>package.json</code>:</p>
<p