Function isIterable

lib/web/polyfill.js:540–545

(it)

  return {value: value, done: !!done};
}
function isIterable(it){
  var O      = Object(it)
    , Symbol = global[SYMBOL]
    , hasExt = (Symbol && Symbol[ITERATOR] || FF_ITERATOR) in O;
  return hasExt || SYMBOL_ITERATOR in O || has(Iterators, classof(O));
}
function getIterator(it){
  var Symbol  = global[SYMBOL]
    , ext     = it[Symbol && Symbol[ITERATOR] || FF_ITERATOR]