Other than polyfills, is there anything else used/provided by react-scripts for runtime?

[JessNah]

I am considering moving react-scripts to be a 'dev-dependency' to solve a security vulnerability issue. instead of keeping it as a 'dependency' as CRA has it.
I know there are tons of threads on why CRA has chosen to specify react-scripts as a dependency but they all always just talk about the polyfills. One such issue - #2696

If I don't care about older browsers support given by the polyfills, is there any other runtime resource provided by react-scripts to warrant not moving it to be a dev-dependency?
Is polyfills the only thing given by react-scripts that is used at run-time?