fix(rsc): improve auto css heuristics

[hi-ogawa]

Description

• Related Improve server css injection heuristics #636

TODO

• support css inside node_modules (e.g. react-tweet)
• show warning for non discovered case (e.g. vanilla-extract) https://github.com/pawelblaszczyk5/vite-rsc-experiments/blob/ef7cbd0e3b64047eb395c6433d1165bdb5d03be7/apps/vanilla-extract/src/root.tsx#L2
  • try it later.
  • probably detecting during build is possible.

---

I verified react-tweet works with zero config:

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/@vitejs/plugin-react@643

npm i https://pkg.pr.new/@vitejs/plugin-react-oxc@643

npm i https://pkg.pr.new/@vitejs/plugin-rsc@643

npm i https://pkg.pr.new/@vitejs/plugin-react-swc@643

commit: 93facc3