Why Such Recursion Not Getting Stack-overflowed?

I'm failing to figure out why calling recSetTimeOut() does not result in a stack overflow error, while recPromise() does. Why does it happen? What is the difference between them?

Solution 1:

To my understanding of you question, this is failing because then does not accept arguments, as you are calling it.

Something like this may yield an expected result...

const recPromise = async () => {
  returnPromise.resolve(recPromise())
}