I'm trying to run a react application hosted on localhost:3000 as part of sub route of production site for development reason on Electron, to access some of production content, webapis, custom authentication, injecting iframe, ... as if the application is running under a subroute.

for example mainWindow.loadURL('https://www.google.com/myreactapp'); would display my application hosted on localhost:3000, and pressing a button on my app, that performs fetch('/api') is ran against www.google.com/api automatically including all authentication headers and cookies.

not sure how to achieve this with Electron, I have been using Fiddler and setup a content replacement with proxy to replace pages content with that of a localhost under a subroute. but our new dev machine does not allow fiddler to be installed.