Earlier quoted context omitted.
deno does type checking. https://docs.deno.com/runtime/manual/tools/check
Oh! I stand corrected. That's a wrapper for TSC, though, right? Edit to add: I see, Deno embeds TSC as a library and tries to straighten out the mess of tsconfig. That must be a leaky abstraction, which makes me wary, but maybe it works well in practice.
https://github.com/denoland/deno/blob/75efc74931c1021fdc41c9...
https://github.com/denoland/deno/blob/75efc74931c1021fdc41c9...
Deno makes certain tradeoffs that make it feel seamless