React Async SSR

react-ssr.js

module.exports.render = function renderFn(url) {
  var bodyHTML;
  if (ExecutionEnvironment.canUseDOM) {
    Router.run(Routes, Router.HistoryLocation, (Handler, state) => {
      bodyHTML = React.render(<Handler params={state.params}/>, document.body);
    });
  } else {
    Router.run(Routes, url, (Handler, state) => {
      var promises = state.routes
        .filter(route => route.handler.fetchData)
        .reduce((promises, route) => {
          promises.push(route.handler.fetchData());
          return promises;
        }, []);

      bodyHTML = Promise.all(promises)
        .then(data => React.renderToStaticMarkup(<Handler {...data[0]} params={state.params}/>));
    });
  }
  return bodyHTML;
};