JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://fb.me/JSXTransformer-0.10.0.js"></script>
<script src="http://fb.me/react-with-addons-0.10.0.js"></script>
<script src="http://fb.me/react-js-fiddle-integration.js"></script>

JavaScript 1.7

/** @jsx React.DOM */

var MyMixin = {
    propTypes: { bar: React.PropTypes.bool }
};

var Hello = React.createClass({
    mixins: [MyMixin],
    propTypes: { foo: React.PropTypes.string },
    render: function() {
        return <div>Hello {this.props.name}</div>;
    }
});
 
console.log(Object.keys(Hello.type.propTypes))