No require() for components needed after hot-update.

Author: tai2

content/guides/hmr-react.md

@@ -192,8 +192,7 @@ render(App);
 // Hot Module Replacement API
 if (module.hot) {
   module.hot.accept('./components/App', () => {
-    const NewApp = require('./components/App').default
-    render(NewApp)
+    render(App)
   });
 }
 ```