content: import React, { Component } from 'react';
  import { connect } from 'react-redux';
  
  export default function(ComposedComponent) {
      class Authentication extends Component {
          static contextTypes = {
              router: React.PropTypes.object
          }
  
          componentWillMount() {
              if (!this.props.authenticated) {
                  this.context.router.push('/');
              }
          }
  
          componentWillUpdate(nextProps) {
              if (!nextProps.authenticated) {
                  this.context.router.push('/');
              }
          }
  
          render() {
              return <ComposedComponent {...this.props} />;
          }
      }
  
      function mapStateToProps(state) {
          return { authenticated: state.auth.authenticated };
      }
  
      return connect(mapStateToProps)(Authentication);
  }