> With timeEnd I get the number I want but would like to see a "safe" approved way of where to place the timeend while dealing with async/promises/recursion separately and together.
Measuring asynchronous code? You are not measuring your code. Your code is only the synchronous parts, the time spent in asynchronous parts are "environmental factors". Your code doesn't run during those times, it sits in the event loop waiting for an event so that it can continue.
Measuring asynchronous code? You are not measuring your code. Your code is only the synchronous parts, the time spent in asynchronous parts are "environmental factors". Your code doesn't run during those times, it sits in the event loop waiting for an event so that it can continue.