index.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Router test</title>
    <link
      rel="stylesheet"
      href="https://code.jquery.com/qunit/qunit-2.14.0.css"
    />
    <script src="https://code.jquery.com/qunit/qunit-2.14.0.js"></script>
  </head>
  <body>
    <div id="qunit"></div>
    <div id="qunit-fixture"></div> 

    <script type="module" src="test.js"></script>
  </body>
</html>