Do I need to build the project for production (node/express)?

Question

JavaScript

I have a project that consists of two parts backend on node express(api) and frontend is also node but with react js. frontend is built through react-scripts and there you can run the react-scripts build command, but I don’t know what to do with backend.
Do I understand correctly that I only need to upload the build to the server for the front?
What to do with api server?
PS react server side, AWS server. if it matters

Answer 1

If the API comes as a completely separate code and you use only those JS features that are supported by the current version of nodejs, then nothing much needs to be done. Install the dependencies and run.
For server-rendera, you will most likely have to build the application in order to properly translate jsx and other imports.