text: import React, { PropTypes } from 'react';
  import ReactCSSTransitionGroup from 'react-addons-css-transition-group';
  
  function Animation({
    children,
    name,
    className,
    duration,
  }) {
    return (
      <ReactCSSTransitionGroup
        component="div"
        transitionName={name}
        transitionEnterTimeout={duration}
        transitionLeaveTimeout={duration}
        className={className}
      >
        {children}
      </ReactCSSTransitionGroup>
      );
  }
  
  Animation.defaultProps = {
    duration: 150,
  };
  
  Animation.propTypes = {
    children: PropTypes.node,
    name: PropTypes.string.isRequired,
    duration: PropTypes.number,
    className: PropTypes.string,
  };
  
  export default Animation;
  