Expose CSS in dev mode as file.

[SebastianStehle]

Hi,

I am testing around if I can migrate from karma+webpack to vite+vitest. It worked fine for another project but this time my setup is a little bit special.

I have a backend written in .NET which also serves the file. In development mode it just proxies the webpack dev server. There are handful "static" sites like login and password recovery and so on. They use the general theme from the frontend page but have like 200 lines of custom css that is just part of the main chunk. So far I have just added the css from the react frontend to my backend as a link, but vite does not extract the css to a normal css file in development mode. Is there a solution for that?

[Shyam-Chen]

vite build --watch