Unused depedencies in babel-preset-react-app?

Created by: michaelsbradleyjr

Is this a bug report?

No

My question

There are 3 dependencies in the package.json of babel-preset-react-app which, if they're in use, it's not clear to me how they come into play:

@babel/plugin-transform-classes @babel/plugin-transform-react-constant-elements @babel/plugin-transform-react-display-name

Can you clarify whether they are unused (perhaps they should be removed?) or how they are used?