Create-React-App Proxy in Production Build

Question

I'm using create-react-app with an express backend. I have the backend running on port 3001, and the frontend runs through port 3000 when in dev mode. I have "proxy": "http://localhost:3001" in my package.json and the api works perfectly.

When I use yarn build, however, and then run serve -s build, the api calls are simply not being made. I'm not sure why it doesn't work in production, when it does in dev.

Any help would be much appreciated.

Answer 1

The proxy feature isn't meant for production.

This might help further explain: https://github.com/facebookincubator/create-react-app/issues/1087#issuecomment-262611096