MAINT Use prettier to format javascript. 
<!-- Bootstrap HTML for running the unit tests. -->
<html>
  <head>
  <meta charset="utf-8"/>
  <script type="text/javascript">
    function sleep(s){
      return new Promise(resolve => setTimeout(resolve, s));
    }
    window.logs = [];
    console.log = function(message) {
      window.logs.push(message);
    };
    console.warn = function(message) {
      window.logs.push(message);
    };
    console.info = function(message) {
      window.logs.push(message);
    };
    console.error = function(message) {
      window.logs.push(message);
    };
    // set the pyodide files URL (packages.json, pyodide.asm.data etc)
  </script>
  <script src="./pyodide.js"></script>
</head>
<body></body>
</html>

<!-- Bootstrap HTML for running the unit tests. -->
<html>
  <head>
  <meta charset="utf-8"/>
  <script type="text/javascript">
    function sleep(s){
      return new Promise(resolve => setTimeout(resolve, s));
    }
    window.logs = [];
    console.log = function(message) {
      window.logs.push(message);
    };
    console.warn = function(message) {
      window.logs.push(message);
    };
    console.info = function(message) {
      window.logs.push(message);
    };
    console.error = function(message) {
      window.logs.push(message);
    };
    // set the pyodide files URL (packages.json, pyodide.asm.data etc)
  </script>
  <script src="./pyodide.js"></script>
</head>
<body></body>
</html>
