content: import React from 'react';
  
  const List = React.createClass({
    propTypes: {
      list: React.PropTypes.array.isRequired
    },
    render() {
      let i = 0;
      const flat = item => {
        return (<li key={i++}>{item}</li>);
      };
      return (
        <div>
          <ol>
            {this.props.list.map(flat)}
          </ol>
        </div>
      );
    }
  });
  
  export default List;
  