feat(react)!: remove babel

[sapphi-red]

Description

Built on top of #1124

In Vite 8 (currently beta), react refresh transform can be handled by Oxc. This means there's no transform that uses babel by default.
To reduce the install size, I think we should remove babel from the dependency of @vitejs/plugin-react.

The @rolldown/plugin-babel package lives at https://github.com/rolldown/plugins.

context: #1114

[ArnaudBarre]

Looks cool, thanks for the cleanup, I'm happy I will be able stop downloading babel!
We need to updates the docs (both Readmes in the repo and vite.dev)
I think we should also add a section on how to add babel to a Vite 8 project, promoting this new plugin and all the possibilities for filtering.

[ArnaudBarre]

If this needed when supporting only Vite 8+ which means require(esm) IIRM?

[sapphi-red]

This is needed to keep the value of require('@vitejs/plugin-react'). If we remove this, the config has to be:

const react = require('@vitejs/plugin-react')

module.exports = {
  plugins: [react.default()] // instead of `react()`
}

[hi-ogawa]

Is rootDir needed? I thought this would allow importing it like import "src/any-file-inside-project" without type error and I didn't like that before.

[sapphi-red]

It is needed, otherwise I get the following error:

error TS2210: The project root is ambiguous, but is required to resolve import map entry '.' in file 'path/to/vite-plugin-react/packages/plugin-react/package.json'. Supply the rootDir compiler option to disambiguate.

I thought this would allow importing it like import "src/any-file-inside-project" without type error

I guess you are confused with baseUrl.

[hi-ogawa]

Ah good to know. Indeed, baseUrl is the one I hated 😅

[sapphi-red]

I'll cut a beta version with this PR.