Hacker News Reader

you know about swc right? https://swc.rs/

Yes, but a bunch of the Typescript support is closed sourced . No idea, if that's important for you.

Type checker, yes. I don't think esbuild comes with a built-in typechecker either.

Is there anything else I am missing?

I was referring to swc

It's important to me. Could you please link me to where these nonfree bits are?

omg lol

I'd recommend esbuild over SWC. It's much more mature.