Mega Green square, produces: https://s1.postimg.org/4a8yrc2373/Screen_Shot_2017-10-22_at_6.05.00_PM.png

mega_green_square.js

'use strict';

const React = require( 'react' );

const e = React.createElement;


module.exports = class MegaGreenSquare extends React.Component {

    render() {

        return e(

            'div',

            {
                style: {

                    backgroundColor: 'green',
                    width: 100,
                    height: 100,
                },
            }
        );
    }
}