Hacker News Reader

There’s https://swc.rs/, a Rust implementation (albeit without type checking at this time).

Not really a fair comparison. Stripping out types is trivially fast regardless of the implementation language. The _vast_ majority of the time taken in tsc is because of the type checking

See the sibling comment https://news.ycombinator.com/item?id=37173313 for a type checker by the same author.

Reply on news.ycombinator.com