content: import React from 'react';
  
  import SceneView from '../SceneView';
  import withCachedChildNavigation from '../../withCachedChildNavigation';
  
  /**
   * Component that renders the child screen of the drawer.
   */
  class DrawerScreen extends React.PureComponent {
    render() {
      const {
        router,
        navigation,
        childNavigationProps,
        screenProps,
      } = this.props;
      const { routes, index } = navigation.state;
      const childNavigation = childNavigationProps[routes[index].key];
      const Content = router.getComponentForRouteName(routes[index].routeName);
      return (
        <SceneView
          screenProps={screenProps}
          component={Content}
          navigation={childNavigation}
        />
      );
    }
  }
  
  export default withCachedChildNavigation(DrawerScreen);
  