fix: load script as an ES module

Author: jakr-s

debugging/book-library/index.html

@@ -11,6 +11,7 @@
       href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"
     />
     <link rel="stylesheet" type="text/css" href="style.css" />
+    <script src="script.js" type="module"></script>
     <title>Book Library</title>
   </head>
 
@@ -87,7 +88,5 @@ <h1>Library</h1>
         </tr>
       </tbody>
     </table>
-
-    <script src="script.js"></script>
   </body>
 </html>