why not move babel.config.js to package.json when `Where do you prefer placing config for Babel, PostCSS, ESLint, etc.? In package.json`

[lovetingyuan]

What problem does this feature solve?

As now, when I choose in package.json for question: Where do you prefer placing config for Babel, PostCSS, ESLint, etc., the babel config is not in package.json but output as babel.config.js .
I am not clear is it a bug or just be on purpose. Could you please tell me the reason if it is set up on purpose. thanks a lot!

Vue CLI v3.1.3

What does the proposed API look like?

add "babel" field in package.json to place babel config.

[haoqunjiang]

vue-cli/packages/@vue/cli/lib/Generator.js

Lines 159 to 161 in cdec606

	// always extract babel.config.js as this is the only way to apply
	// project-wide configuration even to dependencies.
	// TODO: this can be removed when Babel supports root: true in package.json

babel/babel#7961

[lovetingyuan]

Thanks for your reply.
I have found a new feature of babel here: https://github.com/babel/babel/blob/master/CHANGELOG.md#rocket-new-feature #8660
Better support monorepos by allowing users to opt into automatically resolving 'root' with rootMode
It may be helpful to this issue. thanks again.