test.html

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <title>Test Runner</title>
    <script>
        // configure settings, if localhost else prod
        if (window.location.href.indexOf('localhost') !== -1) {
            window.requireSettings = {
                baseURL: '',
            };
        } else {
            window.requireSettings = {
                baseURL: '/twitchystream',
            };
        }
    </script>
    <script src="src/utils/simpleRequire.js"></script>
</head>
<body>
    <div class="js-root"></div>
    <script>
        require(['/test/main.js'], function(main) {
            main();
        });
    </script>
</body>
</html>