If you go and google “react webpack starter” you get some great, fully featured starters like react-starter. The problem is if you’re not starting from scratch, it can be very hard to see what files / settings / etc you need to bring into your project to make it work.
I’ve created a “barebones” setup of using React with webpack. It is the bare minimum configurations and packages you need to get it working. I used the react-webpack repo as an example and removed anything that wasn’t absolutely required for getting React & webpack working together.