several indentations in js is most of the time linear async flow, while in other languages it usually means branching complexity. while an experienced js progra

several indentations in js is most of the time linear async flow, while in other languages it usually means branching complexity. while an experienced js programmer can deal with async code and avoid the so called callback hell, nesting the callback doesnt make it any harder to understand, just harder to test, debug and refactor.