JSFiddle - React, Tailwind, and code Playground

HTML

<script>
    var require = {
        paths: {
            "knockout": "//cdnjs.cloudflare.com/ajax/libs/knockout/2.2.1/knockout-min",
            "mapping": "//cdnjs.cloudflare.com/ajax/libs/knockout.mapping/2.3.5/knockout.mapping"
        },
        deps: ['knockout', 'mapping'],
        callback: function (ko, mapping) {
            ko.mapping = mapping;
        }
    };
</script>
<script src="//cdnjs.cloudflare.com/ajax/libs/require.js/2.1.8/require.min.js"></script>
<script>
require(['knockout'], function (ko) {
    alert( 'ko: ' + ko + ', mapping: ' + ko.mapping);
});
</script>