A set of helpers used across async methods
npm install async.util --saveapplyeacharrayeachasyncifyconcatconsolefncreatetesterdoparalleldoparallellimitdoserieseachoflimitensureasyncfilterfindgetresultforeachofidentityindexofisarrayisarraylikeisobjectkeyiteratorkeysmapmapasyncnextticknoopnotidonceonlyonceparallelqueuerangereducerejectrestparamsetimmediatetimestoboolwithoutindex