This project has React setup with gulp to automatically watch your ES6 JSX files and browserify them. Sass is also gulped. I use Jade as the templating system to add props to server-side rendered code.
Once you've run npm install, go ahead and run gulp to browserify the files.
You'll see two files have been created: public/src/bundle.js and
public/styles/styles.css.
The first file is the exported React file. The second is the compiled Sass file.
Run npm run start to start the server. Notice in the console that the
client-side React code is being executed too.
This is a very basic project but it's enough to remove the stress of trying to figure out the madness that is setting up React with server-side rendering.