[rafaelmn]

TBH this sounds like a great candidate for rewrite - likely millions of hours of runtime/hour. Prettier is written on a platform with a history of such rewrites getting 10x perf increases. The only alternative that comes to mind is Go but I'm not that offended by Rust choice - has pros and cons.

[tubthumper8]

It's not just speed, but also correctness. A quick search in the Prettier repo shows plenty of issues for "undefined is not a function", "cannot read property X of undefined/null", and other such errors that are avoidable in a language with a good type system.

[adiabatty]

Makes me wonder if Prettier would be noticeably improved it it were migrated to TypeScript (first).

[tubthumper8]

IIRC the maintainers are not currently open to migrating to TypeScript

[citrin_ru]

It’s a great candidate for a rewrite buy why not Go, Zig, Ocaml, Haskell e. t. c.?

[zaxomi]

No matter what language they choose, someone will complain and ask "why X, why not Y or Z?"

[giraffe_lady]

Right which is part of why dictating the implementation language up front as part of the bounty is a mistake. They should have put the bounty on the speedup factor they're looking for and let it sort itself out.

My not-completely-naive guess is an expert optimizer can get the improvement they're looking for with only small parts or maybe even none of it rewritten in another language.

[yawboakye]

familiarity. and rust seems to be winning the war for web development tooling, at the moment. zig (by way of bun) may make a good stand if bun were to produce such tools too, as standalone. it’s a high barrier if bun has to be adopted wholesale in order to have a pretty printer.