React placeholder. I like to develop my apps from top to bottom, so I use this often.

placeholder-component

var React = require('react');
module.exports = function(name){
    return class extends React.Component{
        render(){
            return (
                <span>Implement {name}</span>
            )
        }
    }
};

/*
Example usage:

var ChatBox = require('placeholder')('chat box');

then, somewhere:

<ChatBox/>
*/