Presentational component example (via @chantastic)

CommentList.jsx

// CommentList.jsx (PRESENTATION)

class CommentList extends React.Component {
  constructor(props) {
    super(props);
  }
  
  render() { 
    return <ul> {this.props.comments.map(renderComment)} </ul>;
  }
  
  renderComment({avatar, author, body}) {
    return <li>{avatar} {author} {body}</li>;
  }
}