Why is the source code in production visible in the browser?

Question

React

In the browser, in the Sources tab, you can see all the files of the application, although the application is built in production mode. Why?

Answer 1

I decided for myself (at least for create-react-app) that I put the .env file with the line https://github.com/facebook/create-react-app/issue... scripts in the react folder: { "build": "GENERATE_SOURCEMAP=false react-scripts build" } didn't work for me, for some reason, but .env works