text: import React from 'react';
  import PropTypes from 'prop-types';
  import Lane from './LaneContainer.js';
  
  const Lanes = ({ lanes }) => {
    return (
      <div className="lanes">{lanes.map(lane =>
        <Lane className="lane" key={lane.id} lane={lane} />
      )}</div>
    );
  };
  
  Lanes.propTypes = {
    lanes: PropTypes.array,
  };
  
  export default Lanes;
  