| var ctx = require('./_ctx') |
| , call = require('./_iter-call') |
| , isArrayIter = require('./_is-array-iter') |
| , anObject = require('./_an-object') |
| , toLength = require('./_to-length') |
| , getIterFn = require('./core.get-iterator-method'); |
| module.exports = function(iterable, entries, fn, that, ITERATOR){ |
| var iterFn = ITERATOR ? function(){ return iterable; } : getIterFn(iterable) |
| , f = ctx(fn, that, entries ? 2 : 1) |
| , index = 0 |
| , length, step, iterator; |
| if(typeof iterFn != 'function')throw TypeError(iterable + ' is not iterable!'); |
| // fast case for arrays with default iterator |
| if(isArrayIter(iterFn))for(length = toLength(iterable.length); length > index; index++){ |
| entries ? f(anObject(step = iterable[index])[0], step[1]) : f(iterable[index]); |
| } else for(iterator = iterFn.call(iterable); !(step = iterator.next()).done; ){ |
| call(iterator, f, step.value, entries); |
| } |
| }; |
