Since they are going to split it into parts and rewrite some of them, I see an opportunity to rewrite those parts in Rust or Go a la swc or esbuild. Whilst I'm sure a rewrite in JS or TS could improve performance too, the fact remains that ESLint is a massive part of build times across the ecosystem. I don't even want to think about how many monthly hours computers spend in ESLint, especially translated to MWh.

Since it seems they want to have it runnable in the browser (not exactly sure why[1]), I guess Rust would be more amenable to that with its WASM targets.

But "use what you know" I suppose.

Finally, I am really glad this post did not mention the initialisms "LLM" or "AI".

[1]: Being able to easily make a site where you paste code in a textarea and get it linted is my best guess, but that seems like it should not be a core feature, since it is not its primary use case, and can instead be done via a WASM bridge or something.