You'll still want to compile (or more specifically, type-check and minimise), but you'll probably be able to run your TS code without compiling, if you stick to that subset - but that'll likely be pretty easy. I'm imagining lint rules like the ones we're using to restrict ourselves to const and let instead of var, and things we'll quickly internalise like avoiding enums, and things we're no longer using anyway, like namespaces. Yes, it's a subset, but includes enough that you don't need the infra to run it.