That's called a trampoline, and is one of the ways to simulate tail recursion. It requires a global modification to the code: you have to rewrite all your code

That's called a trampoline, and is one of the ways to simulate tail recursion. It requires a global modification to the code: you have to rewrite all your code that you want to be stack-safe to be trampolined. It wouldn't call that trivial, but then Node developers are happy to rewrite their code into CPS so what do I know.