How to use ReactJS with Codeigniter?

Hi,

I want to implement reactjs view in codeigniter.
I can't find a good tutorial how to use reactjs with codeigniter

When i issue, npm start, the view is started in http://localhost:8080
But php coding is loaded in http://localhost.

These two are running in different ports. How can i use these reactjs view now in codeigniter? 
Please guide

Thanks