JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/require.js/2.3.2/require.js"></script>

JavaScript

requirejs.config({
   paths: {
     'socket.io': 'https://cdnjs.cloudflare.com/ajax/libs/socket.io/1.5.1/socket.io',
     'jquery': 'https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0/jquery.min',
     'underscore': 'https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min',
     'backbone': 'https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.3.3/backbone-min'
   },
   waitSeconds: 3
});


require(['jquery', 'underscore', 'backbone', 'socket.io'], function(jq, us, bb, io) {
  console.log($, Backbone.$, Backbone);
});