index.html

<!doctype html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <style>
      body { font-family: sans-serif; text-align: center; }
      body.passed { background-color: #0FA;  }
      h1 { font-size: 1.2em; }
    </style>
    <script>window.Promise||document.write('<script src="js-browser/promise-pjs.js"><'+'/script>')</script>
  </head>
  <body>
    <h1>results in console</h1>
    <h6>green background: all good</h6>
  </body>
  <script src="https://unpkg.com/consolemd@latest/index.js"></script>
  <script src="https://unpkg.com/tressa@latest/index.js"></script>
  <script src="https://unpkg.com/circular-json@latest/build/circular-json.js"></script>
  <script src="test/circular-json.js"></script>
</html>