// We went from using React 0.13 and React Router 0.13 syntax:
import Router from 'react-router';
// ...

app.use('/', (req, res) => {
  let iso = new Iso();
  alt.bootstrap(JSON.stringify(res.locals.data || {}));

  Router.run(routes.server, req.path, (Root, state) => {
    const html = React.renderToString(<Root route={req.path} />);
    iso.add(html, alt.flush());

    res.render('index', {
      app: iso.render(),
    });
  });
});

// To using React 0.14 and React Router 2.0 syntax:
import { match, RouterContext } from 'react-router';
// ...

app.use('/', (req, res) => {
  const iso = new Iso();
  alt.bootstrap(JSON.stringify(res.locals.data || {}));

  match({ routes: routes.server, location: req.url }, (error, redirectLocation, renderProps) => {
    if (error) {
      res.status(500).send(error.message);
    } else if (redirectLocation) {
      res.redirect(302, redirectLocation.pathname + redirectLocation.search);
    } else if (renderProps) {
      const html = ReactDOMServer.renderToString(<RouterContext {...renderProps} />);

      iso.add(html, alt.flush());
      res
        .status(200)
        .render('index', {
          app: iso.render(),
        });
    } else {
      res.status(404).send('Not found');
    }
  });
});