forEachAsync

A forEach loop for applying asynchronous functions to items in iterable objects

How to use:

forEachAsync ( objectLiteralOrArray, doOnIteration, doAfterLastIteration )

• objectLiteralOrArray: The object or array you are iterating over
• doOnIteration ( item, indexOrKey, next )
  • item: the item you want to apply your asynchronous function
  • indexOrKey: the current iteration index or key
  • next (): return this function to move to the next item [1]
• doAfterLastIteration ()

Notes:

1. Tail Calls: Returning the next() function is important with ES6. In case you accidentally
   iterate with a synchronous function over a big iterable, there is a chance
   that your stack will overflow. That’s why tail-calling next() could be important.
   Read more here:
   
   http://stackoverflow.com/questions/23260390/node-js-tail-call-optimization-possible-or-not
   http://2ality.com/2014/04/call-stack-size.html