text: import React from 'react';
  import Tweet from './tweet';
  
  // Generate a pseudo id
  const pseudoId = () => Math.floor(Math.random() * Date.now() * 1000).toString(36);
  
  /**
   * TweetList
   * Render a list of tweets.
   */
  export default class TweetList extends React.Component {
    render () {
      return (
        <div className="tweet-list">
          {this.props.tweets.map((tweet, idx) => {
            return <Tweet isFirst={idx === 0} key={tweet.id|| pseudoId()} tweet={tweet} />
          })}
        </div>
      )
    }
  }