content: import React from 'react';
  import { createPropType } from './../../lib/custom-proptypes';
  
  const Tweet = props => (
    <div>{props.text}</div>
  );
  
  Tweet.propTypes = {
    text: createPropType(
      prop => typeof prop === 'string' && prop.length < 140
    ).isRequired
  };
  
  export default Tweet;
  