My bad, didn't fact check myself before I made an annoying quip. For some reason I thought browsers and started to roll out out native support for TS.
Maybe you got confused, because NodeJS is now able to strip annotations (it does not transform enums, etc) to let you run Typescript files directly.
It's been stuck at stage 1 since early 2022 unfortunately. https://github.com/tc39/proposal-type-annotations