What do you mean by "still"? I just learned that it exists a month ago! I wish I was joking...

JS is not my main language, true, but damn it's hard to keep up. I think it took me less time to be productive with Typescript than with webpack.

Yeah I just learned about Vite a few days ago, and Turbopack today.

Apparently rollup is used under the hood by Vite, and the plugins and config syntax are compatible, but I couldn't get my rollup config to work with Vite.

Yes, e.g. Vite uses Rollup for production builds. Vite uses esbuild for development with plans to make it usable for production builds.

Rollup is used by some of these tools. For instance vite uses rollup for production builds.