How to implement ReactJS in an Electron application?

Hello, well, I'm starting an application in Electron, but let's say I did in two parts, one part of Electron, the configuration is ok, except that the other part I did in other files using ReactJS, which is relatively ready, missing settings. My question is the following, how do I do that part I did in ReactJS I implement in Electron?

I'm not going to be able to show the codes because it would be complicated, but to try to make it easier I'll put some prints of the folders.