Strangely enough, I'd feel this would be fine. I would pay for a non-free upgrade of VSCode if it really brings in enough value. Its already on par with Sublime, and I paid for that...

edit: Though if you mean TypeScript depending on VSCode to build, I doubt thats even possible at this point. Everything is available via the command line. Heck, there are even tools that build on top of the compiler API. (dts-generator, tslint etc)

Well not that it won't compile without VS, but maybe as a vehicle to for the occasional new feature that just doesn't work quite right on Mac, one drive hosted git tie in's, I dunno but their up to something.

Considering VS Code is a light, free alternative to Visual Studio, that scenario is positively absurd.