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source: trip-planner-front/node_modules/neo-async/async.js@ 76712b2

Last change on this file since 76712b2 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago
initial commit
Property mode set to `100644`
File size: 229.6 KB

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1	(function(global, factory) {
2	/jshint -W030 /
3	'use strict';
4	typeof exports === 'object' && typeof module !== 'undefined'
5	? factory(exports)
6	: typeof define === 'function' && define.amd
7	? define(['exports'], factory)
8	: global.async
9	? factory((global.neo_async = global.neo_async \|\| {}))
10	: factory((global.async = global.async \|\| {}));
11	})(this, function(exports) {
12	'use strict';
13
14	var noop = function noop() {};
15	var throwError = function throwError() {
16	throw new Error('Callback was already called.');
17	};
18
19	var DEFAULT_TIMES = 5;
20	var DEFAULT_INTERVAL = 0;
21
22	var obj = 'object';
23	var func = 'function';
24	var isArray = Array.isArray;
25	var nativeKeys = Object.keys;
26	var nativePush = Array.prototype.push;
27	var iteratorSymbol = typeof Symbol === func && Symbol.iterator;
28
29	var nextTick, asyncNextTick, asyncSetImmediate;
30	createImmediate();
31
32	/**
33	* @memberof async
34	* @namespace each
35	* @param {Array\|Object} collection
36	* @param {Function} iterator
37	* @param {Function} callback
38	* @example
39	*
40	* // array
41	* var order = [];
42	* var array = [1, 3, 2];
43	* var iterator = function(num, done) {
44	* setTimeout(function() {
45	* order.push(num);
46	* done();
47	* }, num * 10);
48	* };
49	* async.each(array, iterator, function(err, res) {
50	* console.log(res); // undefined
51	* console.log(order); // [1, 2, 3]
52	* });
53	*
54	* @example
55	*
56	* // array with index
57	* var order = [];
58	* var array = [1, 3, 2];
59	* var iterator = function(num, index, done) {
60	* setTimeout(function() {
61	* order.push([num, index]);
62	* done();
63	* }, num * 10);
64	* };
65	* async.each(array, iterator, function(err, res) {
66	* console.log(res); // undefined
67	* console.log(order); // [[1, 0], [2, 2], [3, 1]]
68	* });
69	*
70	* @example
71	*
72	* // object
73	* var order = [];
74	* var object = { a: 1, b: 3, c: 2 };
75	* var iterator = function(num, done) {
76	* setTimeout(function() {
77	* order.push(num);
78	* done();
79	* }, num * 10);
80	* };
81	* async.each(object, iterator, function(err, res) {
82	* console.log(res); // undefined
83	* console.log(order); // [1, 2, 3]
84	* });
85	*
86	* @example
87	*
88	* // object with key
89	* var order = [];
90	* var object = { a: 1, b: 3, c: 2 };
91	* var iterator = function(num, key, done) {
92	* setTimeout(function() {
93	* order.push([num, key]);
94	* done();
95	* }, num * 10);
96	* };
97	* async.each(object, iterator, function(err, res) {
98	* console.log(res); // undefined
99	* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b']]
100	* });
101	*
102	* @example
103	*
104	* // break
105	* var order = [];
106	* var array = [1, 3, 2];
107	* var iterator = function(num, done) {
108	* setTimeout(function() {
109	* order.push(num);
110	* done(null, num !== 2);
111	* }, num * 10);
112	* };
113	* async.each(array, iterator, function(err, res) {
114	* console.log(res); // undefined
115	* console.log(order); // [1, 2]
116	* });
117	*
118	*/
119	var each = createEach(arrayEach, baseEach, symbolEach);
120
121	/**
122	* @memberof async
123	* @namespace map
124	* @param {Array\|Object} collection
125	* @param {Function} iterator
126	* @param {Function} callback
127	* @example
128	*
129	* // array
130	* var order = [];
131	* var array = [1, 3, 2];
132	* var iterator = function(num, done) {
133	* setTimeout(function() {
134	* order.push(num);
135	* done(null, num);
136	* }, num * 10);
137	* };
138	* async.map(array, iterator, function(err, res) {
139	* console.log(res); // [1, 3, 2];
140	* console.log(order); // [1, 2, 3]
141	* });
142	*
143	* @example
144	*
145	* // array with index
146	* var order = [];
147	* var array = [1, 3, 2];
148	* var iterator = function(num, index, done) {
149	* setTimeout(function() {
150	* order.push([num, index]);
151	* done(null, num);
152	* }, num * 10);
153	* };
154	* async.map(array, iterator, function(err, res) {
155	* console.log(res); // [1, 3, 2]
156	* console.log(order); // [[1, 0], [2, 2], [3, 1]]
157	* });
158	*
159	* @example
160	*
161	* // object
162	* var order = [];
163	* var object = { a: 1, b: 3, c: 2 };
164	* var iterator = function(num, done) {
165	* setTimeout(function() {
166	* order.push(num);
167	* done(null, num);
168	* }, num * 10);
169	* };
170	* async.map(object, iterator, function(err, res) {
171	* console.log(res); // [1, 3, 2]
172	* console.log(order); // [1, 2, 3]
173	* });
174	*
175	* @example
176	*
177	* // object with key
178	* var order = [];
179	* var object = { a: 1, b: 3, c: 2 };
180	* var iterator = function(num, key, done) {
181	* setTimeout(function() {
182	* order.push([num, key]);
183	* done(null, num);
184	* }, num * 10);
185	* };
186	* async.map(object, iterator, function(err, res) {
187	* console.log(res); // [1, 3, 2]
188	* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b']]
189	* });
190	*
191	*/
192	var map = createMap(arrayEachIndex, baseEachIndex, symbolEachIndex, true);
193
194	/**
195	* @memberof async
196	* @namespace mapValues
197	* @param {Array\|Object} collection
198	* @param {Function} iterator
199	* @param {Function} callback
200	* @example
201	*
202	* // array
203	* var order = [];
204	* var array = [1, 3, 2];
205	* var iterator = function(num, done) {
206	* setTimeout(function() {
207	* order.push(num);
208	* done(null, num);
209	* }, num * 10);
210	* };
211	* async.mapValues(array, iterator, function(err, res) {
212	* console.log(res); // { '0': 1, '1': 3, '2': 2 }
213	* console.log(order); // [1, 2, 3]
214	* });
215	*
216	* @example
217	*
218	* // array with index
219	* var order = [];
220	* var array = [1, 3, 2];
221	* var iterator = function(num, index, done) {
222	* setTimeout(function() {
223	* order.push([num, index]);
224	* done(null, num);
225	* }, num * 10);
226	* };
227	* async.mapValues(array, iterator, function(err, res) {
228	* console.log(res); // { '0': 1, '1': 3, '2': 2 }
229	* console.log(order); // [[1, 0], [2, 2], [3, 1]]
230	* });
231	*
232	* @example
233	*
234	* // object
235	* var order = [];
236	* var object = { a: 1, b: 3, c: 2 };
237	* var iterator = function(num, done) {
238	* setTimeout(function() {
239	* order.push(num);
240	* done(null, num);
241	* }, num * 10);
242	* };
243	* async.mapValues(object, iterator, function(err, res) {
244	* console.log(res); // { a: 1, b: 3, c: 2 }
245	* console.log(order); // [1, 2, 3]
246	* });
247	*
248	* @example
249	*
250	* // object with key
251	* var order = [];
252	* var object = { a: 1, b: 3, c: 2 };
253	* var iterator = function(num, key, done) {
254	* setTimeout(function() {
255	* order.push([num, key]);
256	* done(null, num);
257	* }, num * 10);
258	* };
259	* async.mapValues(object, iterator, function(err, res) {
260	* console.log(res); // { a: 1, b: 3, c: 2 }
261	* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b']]
262	* });
263	*
264	*/
265	var mapValues = createMap(arrayEachIndex, baseEachKey, symbolEachKey, false);
266
267	/**
268	* @memberof async
269	* @namespace filter
270	* @param {Array\|Object} collection
271	* @param {Function} iterator
272	* @param {Function} callback
273	* @example
274	*
275	* // array
276	* var order = [];
277	* var array = [1, 3, 2];
278	* var iterator = function(num, done) {
279	* setTimeout(function() {
280	* order.push(num);
281	* done(null, num % 2);
282	* }, num * 10);
283	* };
284	* async.filter(array, iterator, function(err, res) {
285	* console.log(res); // [1, 3];
286	* console.log(order); // [1, 2, 3]
287	* });
288	*
289	* @example
290	*
291	* // array with index
292	* var order = [];
293	* var array = [1, 3, 2];
294	* var iterator = function(num, index, done) {
295	* setTimeout(function() {
296	* order.push([num, index]);
297	* done(null, num % 2);
298	* }, num * 10);
299	* };
300	* async.filter(array, iterator, function(err, res) {
301	* console.log(res); // [1, 3];
302	* console.log(order); // [[1, 0], [2, 2], [3, 1]]
303	* });
304	*
305	* @example
306	*
307	* // object
308	* var order = [];
309	* var object = { a: 1, b: 3, c: 2 };
310	* var iterator = function(num, done) {
311	* setTimeout(function() {
312	* order.push(num);
313	* done(null, num % 2);
314	* }, num * 10);
315	* };
316	* async.filter(object, iterator, function(err, res) {
317	* console.log(res); // [1, 3];
318	* console.log(order); // [1, 2, 3]
319	* });
320	*
321	* @example
322	*
323	* // object with key
324	* var order = [];
325	* var object = { a: 1, b: 3, c: 2 };
326	* var iterator = function(num, key, done) {
327	* setTimeout(function() {
328	* order.push([num, key]);
329	* done(null, num % 2);
330	* }, num * 10);
331	* };
332	* async.filter(object, iterator, function(err, res) {
333	* console.log(res); // [1, 3];
334	* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b']]
335	* });
336	*
337	*/
338	var filter = createFilter(arrayEachIndexValue, baseEachIndexValue, symbolEachIndexValue, true);
339
340	/**
341	* @memberof async
342	* @namespace filterSeries
343	* @param {Array\|Object} collection
344	* @param {Function} iterator
345	* @param {Function} callback
346	* @example
347	*
348	* // array
349	* var order = [];
350	* var array = [1, 3, 2];
351	* var iterator = function(num, done) {
352	* setTimeout(function() {
353	* order.push(num);
354	* done(null, num % 2);
355	* }, num * 10);
356	* };
357	* async.filterSeries(array, iterator, function(err, res) {
358	* console.log(res); // [1, 3];
359	* console.log(order); // [1, 3, 2]
360	* });
361	*
362	* @example
363	*
364	* // array with index
365	* var order = [];
366	* var array = [1, 3, 2];
367	* var iterator = function(num, index, done) {
368	* setTimeout(function() {
369	* order.push([num, index]);
370	* done(null, num % 2);
371	* }, num * 10);
372	* };
373	* async.filterSeries(array, iterator, function(err, res) {
374	* console.log(res); // [1, 3]
375	* console.log(order); // [[1, 0], [3, 1], [2, 2]]
376	* });
377	*
378	* @example
379	*
380	* // object
381	* var order = [];
382	* var object = { a: 1, b: 3, c: 2 };
383	* var iterator = function(num, done) {
384	* setTimeout(function() {
385	* order.push(num);
386	* done(null, num % 2);
387	* }, num * 10);
388	* };
389	* async.filterSeries(object, iterator, function(err, res) {
390	* console.log(res); // [1, 3]
391	* console.log(order); // [1, 3, 2]
392	* });
393	*
394	* @example
395	*
396	* // object with key
397	* var order = [];
398	* var object = { a: 1, b: 3, c: 2 };
399	* var iterator = function(num, key, done) {
400	* setTimeout(function() {
401	* order.push([num, key]);
402	* done(null, num % 2);
403	* }, num * 10);
404	* };
405	* async.filterSeries(object, iterator, function(err, res) {
406	* console.log(res); // [1, 3]
407	* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'c']]
408	* });
409	*
410	*/
411	var filterSeries = createFilterSeries(true);
412
413	/**
414	* @memberof async
415	* @namespace filterLimit
416	* @param {Array\|Object} collection
417	* @param {number} limit - limit >= 1
418	* @param {Function} iterator
419	* @param {Function} callback
420	* @example
421	*
422	* // array
423	* var order = [];
424	* var array = [1, 5, 3, 4, 2];
425	* var iterator = function(num, done) {
426	* setTimeout(function() {
427	* order.push(num);
428	* done(null, num % 2);
429	* }, num * 10);
430	* };
431	* async.filterLimit(array, 2, iterator, function(err, res) {
432	* console.log(res); // [1, 5, 3]
433	* console.log(order); // [1, 3, 5, 2, 4]
434	* });
435	*
436	* @example
437	*
438	* // array with index
439	* var order = [];
440	* var array = [1, 5, 3, 4, 2];
441	* var iterator = function(num, index, done) {
442	* setTimeout(function() {
443	* order.push([num, index]);
444	* done(null, num % 2);
445	* }, num * 10);
446	* };
447	* async.filterLimit(array, 2, iterator, function(err, res) {
448	* console.log(res); // [1, 5, 3]
449	* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
450	* });
451	*
452	* @example
453	*
454	* // object
455	* var order = [];
456	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
457	* var iterator = function(num, done) {
458	* setTimeout(function() {
459	* order.push(num);
460	* done(null, num % 2);
461	* }, num * 10);
462	* };
463	* async.filterLimit(object, 2, iterator, function(err, res) {
464	* console.log(res); // [1, 5, 3]
465	* console.log(order); // [1, 3, 5, 2, 4]
466	* });
467	*
468	* @example
469	*
470	* // object with key
471	* var order = [];
472	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
473	* var iterator = function(num, key, done) {
474	* setTimeout(function() {
475	* order.push([num, key]);
476	* done(null, num % 2);
477	* }, num * 10);
478	* };
479	* async.filterLimit(object, 2, iterator, function(err, res) {
480	* console.log(res); // [1, 5, 3]
481	* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
482	* });
483	*
484	*/
485	var filterLimit = createFilterLimit(true);
486
487	/**
488	* @memberof async
489	* @namespace reject
490	* @param {Array\|Object} collection
491	* @param {Function} iterator
492	* @param {Function} callback
493	* @example
494	*
495	* // array
496	* var order = [];
497	* var array = [1, 3, 2];
498	* var iterator = function(num, done) {
499	* setTimeout(function() {
500	* order.push(num);
501	* done(null, num % 2);
502	* }, num * 10);
503	* };
504	* async.reject(array, iterator, function(err, res) {
505	* console.log(res); // [2];
506	* console.log(order); // [1, 2, 3]
507	* });
508	*
509	* @example
510	*
511	* // array with index
512	* var order = [];
513	* var array = [1, 3, 2];
514	* var iterator = function(num, index, done) {
515	* setTimeout(function() {
516	* order.push([num, index]);
517	* done(null, num % 2);
518	* }, num * 10);
519	* };
520	* async.reject(array, iterator, function(err, res) {
521	* console.log(res); // [2];
522	* console.log(order); // [[1, 0], [2, 2], [3, 1]]
523	* });
524	*
525	* @example
526	*
527	* // object
528	* var order = [];
529	* var object = { a: 1, b: 3, c: 2 };
530	* var iterator = function(num, done) {
531	* setTimeout(function() {
532	* order.push(num);
533	* done(null, num % 2);
534	* }, num * 10);
535	* };
536	* async.reject(object, iterator, function(err, res) {
537	* console.log(res); // [2];
538	* console.log(order); // [1, 2, 3]
539	* });
540	*
541	* @example
542	*
543	* // object with key
544	* var order = [];
545	* var object = { a: 1, b: 3, c: 2 };
546	* var iterator = function(num, key, done) {
547	* setTimeout(function() {
548	* order.push([num, key]);
549	* done(null, num % 2);
550	* }, num * 10);
551	* };
552	* async.reject(object, iterator, function(err, res) {
553	* console.log(res); // [2];
554	* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b']]
555	* });
556	*
557	*/
558	var reject = createFilter(arrayEachIndexValue, baseEachIndexValue, symbolEachIndexValue, false);
559
560	/**
561	* @memberof async
562	* @namespace rejectSeries
563	* @param {Array\|Object} collection
564	* @param {Function} iterator
565	* @param {Function} callback
566	* @example
567	*
568	* // array
569	* var order = [];
570	* var array = [1, 3, 2];
571	* var iterator = function(num, done) {
572	* setTimeout(function() {
573	* order.push(num);
574	* done(null, num % 2);
575	* }, num * 10);
576	* };
577	* async.rejectSeries(array, iterator, function(err, res) {
578	* console.log(res); // [2];
579	* console.log(order); // [1, 3, 2]
580	* });
581	*
582	* @example
583	*
584	* // object
585	* var order = [];
586	* var object = { a: 1, b: 3, c: 2 };
587	* var iterator = function(num, done) {
588	* setTimeout(function() {
589	* order.push(num);
590	* done(null, num % 2);
591	* }, num * 10);
592	* };
593	* async.rejectSeries(object, iterator, function(err, res) {
594	* console.log(res); // [2];
595	* console.log(order); // [1, 3, 2]
596	* });
597	*
598	* @example
599	*
600	* // object with key
601	* var order = [];
602	* var object = { a: 1, b: 3, c: 2 };
603	* var iterator = function(num, key, done) {
604	* setTimeout(function() {
605	* order.push([num, key]);
606	* done(null, num % 2);
607	* }, num * 10);
608	* };
609	* async.rejectSeries(object, iterator, function(err, res) {
610	* console.log(res); // [2];
611	* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'c']]
612	* });
613	*
614	*/
615	var rejectSeries = createFilterSeries(false);
616
617	/**
618	* @memberof async
619	* @namespace rejectLimit
620	* @param {Array\|Object} collection
621	* @param {number} limit - limit >= 1
622	* @param {Function} iterator
623	* @param {Function} callback
624	* @example
625	*
626	* // array
627	* var order = [];
628	* var array = [1, 5, 3, 4, 2];
629	* var iterator = function(num, done) {
630	* setTimeout(function() {
631	* order.push(num);
632	* done(null, num % 2);
633	* }, num * 10);
634	* };
635	* async.rejectLimit(array, 2, iterator, function(err, res) {
636	* console.log(res); // [4, 2]
637	* console.log(order); // [1, 3, 5, 2, 4]
638	* });
639	*
640	* @example
641	*
642	* // array with index
643	* var order = [];
644	* var array = [1, 5, 3, 4, 2];
645	* var iterator = function(num, index, done) {
646	* setTimeout(function() {
647	* order.push([num, index]);
648	* done(null, num % 2);
649	* }, num * 10);
650	* };
651	* async.rejectLimit(array, 2, iterator, function(err, res) {
652	* console.log(res); // [4, 2]
653	* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
654	* });
655	*
656	* @example
657	*
658	* // object
659	* var order = [];
660	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
661	* var iterator = function(num, done) {
662	* setTimeout(function() {
663	* order.push(num);
664	* done(null, num % 2);
665	* }, num * 10);
666	* };
667	* async.rejectLimit(object, 2, iterator, function(err, res) {
668	* console.log(res); // [4, 2]
669	* console.log(order); // [1, 3, 5, 2, 4]
670	* });
671	*
672	* @example
673	*
674	* // object with key
675	* var order = [];
676	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
677	* var iterator = function(num, key, done) {
678	* setTimeout(function() {
679	* order.push([num, key]);
680	* done(null, num % 2);
681	* }, num * 10);
682	* };
683	* async.rejectLimit(object, 2, iterator, function(err, res) {
684	* console.log(res); // [4, 2]
685	* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
686	* });
687	*
688	*/
689	var rejectLimit = createFilterLimit(false);
690
691	/**
692	* @memberof async
693	* @namespace detect
694	* @param {Array\|Object} collection
695	* @param {Function} iterator
696	* @param {Function} callback
697	* @example
698	*
699	* // array
700	* var order = [];
701	* var array = [1, 3, 2];
702	* var iterator = function(num, done) {
703	* setTimeout(function() {
704	* order.push(num);
705	* done(null, num % 2);
706	* }, num * 10);
707	* };
708	* async.detect(array, iterator, function(err, res) {
709	* console.log(res); // 1
710	* console.log(order); // [1]
711	* });
712	*
713	* @example
714	*
715	* // array with index
716	* var order = [];
717	* var array = [1, 3, 2];
718	* var iterator = function(num, index, done) {
719	* setTimeout(function() {
720	* order.push([num, index]);
721	* done(null, num % 2);
722	* }, num * 10);
723	* };
724	* async.detect(array, iterator, function(err, res) {
725	* console.log(res); // 1
726	* console.log(order); // [[1, 0]]
727	* });
728	*
729	* @example
730	*
731	* // object
732	* var order = [];
733	* var object = { a: 1, b: 3, c: 2 };
734	* var iterator = function(num, done) {
735	* setTimeout(function() {
736	* order.push(num);
737	* done(null, num % 2);
738	* }, num * 10);
739	* };
740	* async.detect(object, iterator, function(err, res) {
741	* console.log(res); // 1
742	* console.log(order); // [1]
743	* });
744	*
745	* @example
746	*
747	* // object with key
748	* var order = [];
749	* var object = { a: 1, b: 3, c: 2 };
750	* var iterator = function(num, key, done) {
751	* setTimeout(function() {
752	* order.push([num, key]);
753	* done(null, num % 2);
754	* }, num * 10);
755	* };
756	* async.detect(object, iterator, function(err, res) {
757	* console.log(res); // 1
758	* console.log(order); // [[1, 'a']]
759	* });
760	*
761	*/
762	var detect = createDetect(arrayEachValue, baseEachValue, symbolEachValue, true);
763
764	/**
765	* @memberof async
766	* @namespace detectSeries
767	* @param {Array\|Object} collection
768	* @param {Function} iterator
769	* @param {Function} callback
770	* @example
771	*
772	* // array
773	* var order = [];
774	* var array = [1, 3, 2];
775	* var iterator = function(num, done) {
776	* setTimeout(function() {
777	* order.push(num);
778	* done(null, num % 2);
779	* }, num * 10);
780	* };
781	* async.detectSeries(array, iterator, function(err, res) {
782	* console.log(res); // 1
783	* console.log(order); // [1]
784	* });
785	*
786	* @example
787	*
788	* // array with index
789	* var order = [];
790	* var array = [1, 3, 2];
791	* var iterator = function(num, index, done) {
792	* setTimeout(function() {
793	* order.push([num, index]);
794	* done(null, num % 2);
795	* }, num * 10);
796	* };
797	* async.detectSeries(array, iterator, function(err, res) {
798	* console.log(res); // 1
799	* console.log(order); // [[1, 0]]
800	* });
801	*
802	* @example
803	*
804	* // object
805	* var order = [];
806	* var object = { a: 1, b: 3, c: 2 };
807	* var iterator = function(num, done) {
808	* setTimeout(function() {
809	* order.push(num);
810	* done(null, num % 2);
811	* }, num * 10);
812	* };
813	* async.detectSeries(object, iterator, function(err, res) {
814	* console.log(res); // 1
815	* console.log(order); // [1]
816	* });
817	*
818	* @example
819	*
820	* // object with key
821	* var order = [];
822	* var object = { a: 1, b: 3, c: 2 };
823	* var iterator = function(num, key, done) {
824	* setTimeout(function() {
825	* order.push([num, key]);
826	* done(null, num % 2);
827	* }, num * 10);
828	* };
829	* async.detectSeries(object, iterator, function(err, res) {
830	* console.log(res); // 1
831	* console.log(order); // [[1, 'a']]
832	* });
833	*
834	*/
835	var detectSeries = createDetectSeries(true);
836
837	/**
838	* @memberof async
839	* @namespace detectLimit
840	* @param {Array\|Object} collection
841	* @param {number} limit - limit >= 1
842	* @param {Function} iterator
843	* @param {Function} callback
844	* @example
845	*
846	* // array
847	* var order = [];
848	* var array = [1, 5, 3, 4, 2];
849	* var iterator = function(num, done) {
850	* setTimeout(function() {
851	* order.push(num);
852	* done(null, num % 2);
853	* }, num * 10);
854	* };
855	* async.detectLimit(array, 2, iterator, function(err, res) {
856	* console.log(res); // 1
857	* console.log(order); // [1]
858	* });
859	*
860	* @example
861	*
862	* // array with index
863	* var order = [];
864	* var array = [1, 5, 3, 4, 2];
865	* var iterator = function(num, index, done) {
866	* setTimeout(function() {
867	* order.push([num, index]);
868	* done(null, num % 2);
869	* }, num * 10);
870	* };
871	* async.detectLimit(array, 2, iterator, function(err, res) {
872	* console.log(res); // 1
873	* console.log(order); // [[1, 0]]
874	* });
875	*
876	* @example
877	*
878	* // object
879	* var order = [];
880	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
881	* var iterator = function(num, done) {
882	* setTimeout(function() {
883	* order.push(num);
884	* done(null, num % 2);
885	* }, num * 10);
886	* };
887	* async.detectLimit(object, 2, iterator, function(err, res) {
888	* console.log(res); // 1
889	* console.log(order); // [1]
890	* });
891	*
892	* @example
893	*
894	* // object with key
895	* var order = [];
896	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
897	* var iterator = function(num, key, done) {
898	* setTimeout(function() {
899	* order.push([num, key]);
900	* done(null, num % 2);
901	* }, num * 10);
902	* };
903	* async.detectLimit(object, 2, iterator, function(err, res) {
904	* console.log(res); // 1
905	* console.log(order); // [[1, 'a']]
906	* });
907	*
908	*/
909	var detectLimit = createDetectLimit(true);
910
911	/**
912	* @memberof async
913	* @namespace every
914	* @param {Array\|Object} collection
915	* @param {Function} iterator
916	* @param {Function} callback
917	* @example
918	*
919	* // array
920	* var order = [];
921	* var array = [1, 3, 2];
922	* var iterator = function(num, done) {
923	* setTimeout(function() {
924	* order.push(num);
925	* done(null, num % 2);
926	* }, num * 10);
927	* };
928	* async.every(array, iterator, function(err, res) {
929	* console.log(res); // false
930	* console.log(order); // [1, 2]
931	* });
932	*
933	* @example
934	*
935	* // array with index
936	* var order = [];
937	* var array = [1, 3, 2];
938	* var iterator = function(num, index, done) {
939	* setTimeout(function() {
940	* order.push([num, index]);
941	* done(null, num % 2);
942	* }, num * 10);
943	* };
944	* async.every(array, iterator, function(err, res) {
945	* console.log(res); // false
946	* console.log(order); // [[1, 0], [2, 2]]
947	* });
948	*
949	* @example
950	*
951	* // object
952	* var order = [];
953	* var object = { a: 1, b: 3, c: 2 };
954	* var iterator = function(num, done) {
955	* setTimeout(function() {
956	* order.push(num);
957	* done(null, num % 2);
958	* }, num * 10);
959	* };
960	* async.every(object, iterator, function(err, res) {
961	* console.log(res); // false
962	* console.log(order); // [1, 2]
963	* });
964	*
965	* @example
966	*
967	* // object with key
968	* var order = [];
969	* var object = { a: 1, b: 3, c: 2 };
970	* var iterator = function(num, key, done) {
971	* setTimeout(function() {
972	* order.push([num, key]);
973	* done(null, num % 2);
974	* }, num * 10);
975	* };
976	* async.every(object, iterator, function(err, res) {
977	* console.log(res); // false
978	* console.log(order); // [[1, 'a'], [2, 'c']]
979	* });
980	*
981	*/
982	var every = createEvery(arrayEachValue, baseEachValue, symbolEachValue);
983
984	/**
985	* @memberof async
986	* @namespace everySeries
987	* @param {Array\|Object} collection
988	* @param {Function} iterator
989	* @param {Function} callback
990	* @example
991	*
992	* // array
993	* var order = [];
994	* var array = [1, 3, 2];
995	* var iterator = function(num, done) {
996	* setTimeout(function() {
997	* order.push(num);
998	* done(null, num % 2);
999	* }, num * 10);
1000	* };
1001	* async.everySeries(array, iterator, function(err, res) {
1002	* console.log(res); // false
1003	* console.log(order); // [1, 3, 2]
1004	* });
1005	*
1006	* @example
1007	*
1008	* // array with index
1009	* var order = [];
1010	* var array = [1, 3, 2];
1011	* var iterator = function(num, index, done) {
1012	* setTimeout(function() {
1013	* order.push([num, index]);
1014	* done(null, num % 2);
1015	* }, num * 10);
1016	* };
1017	* async.everySeries(array, iterator, function(err, res) {
1018	* console.log(res); // false
1019	* console.log(order); // [[1, 0], [3, 1], [2, 2]]
1020	* });
1021	*
1022	* @example
1023	*
1024	* // object
1025	* var order = [];
1026	* var object = { a: 1, b: 3, c: 2 };
1027	* var iterator = function(num, done) {
1028	* setTimeout(function() {
1029	* order.push(num);
1030	* done(null, num % 2);
1031	* }, num * 10);
1032	* };
1033	* async.everySeries(object, iterator, function(err, res) {
1034	* console.log(res); // false
1035	* console.log(order); // [1, 3, 2]
1036	* });
1037	*
1038	* @example
1039	*
1040	* // object with key
1041	* var order = [];
1042	* var object = { a: 1, b: 3, c: 2 };
1043	* var iterator = function(num, key, done) {
1044	* setTimeout(function() {
1045	* order.push([num, key]);
1046	* done(null, num % 2);
1047	* }, num * 10);
1048	* };
1049	* async.everySeries(object, iterator, function(err, res) {
1050	* console.log(res); // false
1051	* console.log(order); // [[1, 'a'], [3, 'b'] [2, 'c']]
1052	* });
1053	*
1054	*/
1055	var everySeries = createEverySeries();
1056
1057	/**
1058	* @memberof async
1059	* @namespace everyLimit
1060	* @param {Array\|Object} collection
1061	* @param {number} limit - limit >= 1
1062	* @param {Function} iterator
1063	* @param {Function} callback
1064	* @example
1065	*
1066	* // array
1067	* var order = [];
1068	* var array = [1, 5, 3, 4, 2];
1069	* var iterator = function(num, done) {
1070	* setTimeout(function() {
1071	* order.push(num);
1072	* done(null, num % 2);
1073	* }, num * 10);
1074	* };
1075	* async.everyLimit(array, 2, iterator, function(err, res) {
1076	* console.log(res); // false
1077	* console.log(order); // [1, 3, 5, 2]
1078	* });
1079	*
1080	* @example
1081	*
1082	* // array with index
1083	* var order = [];
1084	* var array = [1, 5, 3, 4, 2];
1085	* var iterator = function(num, index, done) {
1086	* setTimeout(function() {
1087	* order.push([num, index]);
1088	* done(null, num % 2);
1089	* }, num * 10);
1090	* };
1091	* async.everyLimit(array, 2, iterator, function(err, res) {
1092	* console.log(res); // false
1093	* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4]]
1094	* });
1095	*
1096	* @example
1097	*
1098	* // object
1099	* var order = [];
1100	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
1101	* var iterator = function(num, done) {
1102	* setTimeout(function() {
1103	* order.push(num);
1104	* done(null, num % 2);
1105	* }, num * 10);
1106	* };
1107	* async.everyLimit(object, 2, iterator, function(err, res) {
1108	* console.log(res); // false
1109	* console.log(order); // [1, 3, 5, 2]
1110	* });
1111	*
1112	* @example
1113	*
1114	* // object with key
1115	* var order = [];
1116	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
1117	* var iterator = function(num, key, done) {
1118	* setTimeout(function() {
1119	* order.push([num, key]);
1120	* done(null, num % 2);
1121	* }, num * 10);
1122	* };
1123	* async.everyLimit(object, 2, iterator, function(err, res) {
1124	* console.log(res); // false
1125	* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e']]
1126	* });
1127	*
1128	*/
1129	var everyLimit = createEveryLimit();
1130
1131	/**
1132	* @memberof async
1133	* @namespace pick
1134	* @param {Array\|Object} collection
1135	* @param {Function} iterator
1136	* @param {Function} callback
1137	* @example
1138	*
1139	* // array
1140	* var order = [];
1141	* var array = [1, 3, 2, 4];
1142	* var iterator = function(num, done) {
1143	* setTimeout(function() {
1144	* order.push(num);
1145	* done(null, num % 2);
1146	* }, num * 10);
1147	* };
1148	* async.pick(array, iterator, function(err, res) {
1149	* console.log(res); // { '0': 1, '1': 3 }
1150	* console.log(order); // [1, 2, 3, 4]
1151	* });
1152	*
1153	* @example
1154	*
1155	* // array with index
1156	* var order = [];
1157	* var array = [1, 3, 2, 4];
1158	* var iterator = function(num, index, done) {
1159	* setTimeout(function() {
1160	* order.push([num, index]);
1161	* done(null, num % 2);
1162	* }, num * 10);
1163	* };
1164	* async.pick(array, iterator, function(err, res) {
1165	* console.log(res); // { '0': 1, '1': 3 }
1166	* console.log(order); // [[0, 1], [2, 2], [3, 1], [4, 3]]
1167	* });
1168	*
1169	* @example
1170	*
1171	* // object
1172	* var order = [];
1173	* var object = { a: 1, b: 3, c: 2, d: 4 };
1174	* var iterator = function(num, done) {
1175	* setTimeout(function() {
1176	* order.push(num);
1177	* done(null, num % 2);
1178	* }, num * 10);
1179	* };
1180	* async.pick(object, iterator, function(err, res) {
1181	* console.log(res); // { a: 1, b: 3 }
1182	* console.log(order); // [1, 2, 3, 4]
1183	* });
1184	*
1185	* @example
1186	*
1187	* // object with key
1188	* var order = [];
1189	* var object = { a: 1, b: 3, c: 2, d: 4 };
1190	* var iterator = function(num, key, done) {
1191	* setTimeout(function() {
1192	* order.push([num, key]);
1193	* done(null, num % 2);
1194	* }, num * 10);
1195	* };
1196	* async.pick(object, iterator, function(err, res) {
1197	* console.log(res); // { a: 1, b: 3 }
1198	* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b'], [4, 'd']]
1199	* });
1200	*
1201	*/
1202	var pick = createPick(arrayEachIndexValue, baseEachKeyValue, symbolEachKeyValue, true);
1203
1204	/**
1205	* @memberof async
1206	* @namespace pickSeries
1207	* @param {Array\|Object} collection
1208	* @param {Function} iterator
1209	* @param {Function} callback
1210	* @example
1211	*
1212	* // array
1213	* var order = [];
1214	* var array = [1, 3, 2, 4];
1215	* var iterator = function(num, done) {
1216	* setTimeout(function() {
1217	* order.push(num);
1218	* done(null, num % 2);
1219	* }, num * 10);
1220	* };
1221	* async.pickSeries(array, iterator, function(err, res) {
1222	* console.log(res); // { '0': 1, '1': 3 }
1223	* console.log(order); // [1, 3, 2, 4]
1224	* });
1225	*
1226	* @example
1227	*
1228	* // array with index
1229	* var order = [];
1230	* var array = [1, 3, 2, 4];
1231	* var iterator = function(num, index, done) {
1232	* setTimeout(function() {
1233	* order.push([num, index]);
1234	* done(null, num % 2);
1235	* }, num * 10);
1236	* };
1237	* async.pickSeries(array, iterator, function(err, res) {
1238	* console.log(res); // { '0': 1, '1': 3 }
1239	* console.log(order); // [[0, 1], [3, 1], [2, 2], [4, 3]]
1240	* });
1241	*
1242	* @example
1243	*
1244	* // object
1245	* var order = [];
1246	* var object = { a: 1, b: 3, c: 2, d: 4 };
1247	* var iterator = function(num, done) {
1248	* setTimeout(function() {
1249	* order.push(num);
1250	* done(null, num % 2);
1251	* }, num * 10);
1252	* };
1253	* async.pickSeries(object, iterator, function(err, res) {
1254	* console.log(res); // { a: 1, b: 3 }
1255	* console.log(order); // [1, 3, 2, 4]
1256	* });
1257	*
1258	* @example
1259	*
1260	* // object with key
1261	* var order = [];
1262	* var object = { a: 1, b: 3, c: 2, d: 4 };
1263	* var iterator = function(num, key, done) {
1264	* setTimeout(function() {
1265	* order.push([num, key]);
1266	* done(null, num % 2);
1267	* }, num * 10);
1268	* };
1269	* async.pickSeries(object, iterator, function(err, res) {
1270	* console.log(res); // { a: 1, b: 3 }
1271	* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'c'], [4, 'd']]
1272	* });
1273	*
1274	*/
1275	var pickSeries = createPickSeries(true);
1276
1277	/**
1278	* @memberof async
1279	* @namespace pickLimit
1280	* @param {Array\|Object} collection
1281	* @param {number} limit - limit >= 1
1282	* @param {Function} iterator
1283	* @param {Function} callback
1284	* @example
1285	*
1286	* // array
1287	* var order = [];
1288	* var array = [1, 5, 3, 4, 2];
1289	* var iterator = function(num, done) {
1290	* setTimeout(function() {
1291	* order.push(num);
1292	* done(null, num % 2);
1293	* }, num * 10);
1294	* };
1295	* async.pickLimit(array, 2, iterator, function(err, res) {
1296	* console.log(res); // { '0': 1, '1': 5, '2': 3 }
1297	* console.log(order); // [1, 3, 5, 2, 4]
1298	* });
1299	*
1300	* @example
1301	*
1302	* // array with index
1303	* var order = [];
1304	* var array = [1, 5, 3, 4, 2];
1305	* var iterator = function(num, index, done) {
1306	* setTimeout(function() {
1307	* order.push([num, index]);
1308	* done(null, num % 2);
1309	* }, num * 10);
1310	* };
1311	* async.pickLimit(array, 2, iterator, function(err, res) {
1312	* console.log(res); // { '0': 1, '1': 5, '2': 3 }
1313	* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
1314	* });
1315	*
1316	* @example
1317	*
1318	* // object
1319	* var order = [];
1320	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
1321	* var iterator = function(num, done) {
1322	* setTimeout(function() {
1323	* order.push(num);
1324	* done(null, num % 2);
1325	* }, num * 10);
1326	* };
1327	* async.pickLimit(object, 2, iterator, function(err, res) {
1328	* console.log(res); // { a: 1, b: 5, c: 3 }
1329	* console.log(order); // [1, 3, 5, 2, 4]
1330	* });
1331	*
1332	* @example
1333	*
1334	* // object with key
1335	* var order = [];
1336	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
1337	* var iterator = function(num, key, done) {
1338	* setTimeout(function() {
1339	* order.push([num, key]);
1340	* done(null, num % 2);
1341	* }, num * 10);
1342	* };
1343	* async.pickLimit(object, 2, iterator, function(err, res) {
1344	* console.log(res); // { a: 1, b: 5, c: 3 }
1345	* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
1346	* });
1347	*
1348	*/
1349	var pickLimit = createPickLimit(true);
1350
1351	/**
1352	* @memberof async
1353	* @namespace omit
1354	* @param {Array\|Object} collection
1355	* @param {Function} iterator
1356	* @param {Function} callback
1357	* @example
1358	*
1359	* // array
1360	* var order = [];
1361	* var array = [1, 3, 2, 4];
1362	* var iterator = function(num, done) {
1363	* setTimeout(function() {
1364	* order.push(num);
1365	* done(null, num % 2);
1366	* }, num * 10);
1367	* };
1368	* async.omit(array, iterator, function(err, res) {
1369	* console.log(res); // { '2': 2, '3': 4 }
1370	* console.log(order); // [1, 2, 3, 4]
1371	* });
1372	*
1373	* @example
1374	*
1375	* // array with index
1376	* var order = [];
1377	* var array = [1, 3, 2, 4];
1378	* var iterator = function(num, index, done) {
1379	* setTimeout(function() {
1380	* order.push([num, index]);
1381	* done(null, num % 2);
1382	* }, num * 10);
1383	* };
1384	* async.omit(array, iterator, function(err, res) {
1385	* console.log(res); // { '2': 2, '3': 4 }
1386	* console.log(order); // [[0, 1], [2, 2], [3, 1], [4, 3]]
1387	* });
1388	*
1389	* @example
1390	*
1391	* // object
1392	* var order = [];
1393	* var object = { a: 1, b: 3, c: 2, d: 4 };
1394	* var iterator = function(num, done) {
1395	* setTimeout(function() {
1396	* order.push(num);
1397	* done(null, num % 2);
1398	* }, num * 10);
1399	* };
1400	* async.omit(object, iterator, function(err, res) {
1401	* console.log(res); // { c: 2, d: 4 }
1402	* console.log(order); // [1, 2, 3, 4]
1403	* });
1404	*
1405	* @example
1406	*
1407	* // object with key
1408	* var order = [];
1409	* var object = { a: 1, b: 3, c: 2, d: 4 };
1410	* var iterator = function(num, key, done) {
1411	* setTimeout(function() {
1412	* order.push([num, key]);
1413	* done(null, num % 2);
1414	* }, num * 10);
1415	* };
1416	* async.omit(object, iterator, function(err, res) {
1417	* console.log(res); // { c: 2, d: 4 }
1418	* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b'], [4, 'd']]
1419	* });
1420	*
1421	*/
1422	var omit = createPick(arrayEachIndexValue, baseEachKeyValue, symbolEachKeyValue, false);
1423
1424	/**
1425	* @memberof async
1426	* @namespace omitSeries
1427	* @param {Array\|Object} collection
1428	* @param {Function} iterator
1429	* @param {Function} callback
1430	* @example
1431	*
1432	* // array
1433	* var order = [];
1434	* var array = [1, 3, 2, 4];
1435	* var iterator = function(num, done) {
1436	* setTimeout(function() {
1437	* order.push(num);
1438	* done(null, num % 2);
1439	* }, num * 10);
1440	* };
1441	* async.omitSeries(array, iterator, function(err, res) {
1442	* console.log(res); // { '2': 2, '3': 4 }
1443	* console.log(order); // [1, 3, 2, 4]
1444	* });
1445	*
1446	* @example
1447	*
1448	* // array with index
1449	* var order = [];
1450	* var array = [1, 3, 2, 4];
1451	* var iterator = function(num, index, done) {
1452	* setTimeout(function() {
1453	* order.push([num, index]);
1454	* done(null, num % 2);
1455	* }, num * 10);
1456	* };
1457	* async.omitSeries(array, iterator, function(err, res) {
1458	* console.log(res); // { '2': 2, '3': 4 }
1459	* console.log(order); // [[0, 1], [3, 1], [2, 2], [4, 3]]
1460	* });
1461	*
1462	* @example
1463	*
1464	* // object
1465	* var order = [];
1466	* var object = { a: 1, b: 3, c: 2, d: 4 };
1467	* var iterator = function(num, done) {
1468	* setTimeout(function() {
1469	* order.push(num);
1470	* done(null, num % 2);
1471	* }, num * 10);
1472	* };
1473	* async.omitSeries(object, iterator, function(err, res) {
1474	* console.log(res); // { c: 2, d: 4 }
1475	* console.log(order); // [1, 3, 2, 4]
1476	* });
1477	*
1478	* @example
1479	*
1480	* // object with key
1481	* var order = [];
1482	* var object = { a: 1, b: 3, c: 2, d: 4 };
1483	* var iterator = function(num, key, done) {
1484	* setTimeout(function() {
1485	* order.push([num, key]);
1486	* done(null, num % 2);
1487	* }, num * 10);
1488	* };
1489	* async.omitSeries(object, iterator, function(err, res) {
1490	* console.log(res); // { c: 2, d: 4 }
1491	* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'c'], [4, 'd']]
1492	* });
1493	*
1494	*/
1495	var omitSeries = createPickSeries(false);
1496
1497	/**
1498	* @memberof async
1499	* @namespace omitLimit
1500	* @param {Array\|Object} collection
1501	* @param {number} limit - limit >= 1
1502	* @param {Function} iterator
1503	* @param {Function} callback
1504	* @example
1505	*
1506	* // array
1507	* var order = [];
1508	* var array = [1, 5, 3, 4, 2];
1509	* var iterator = function(num, done) {
1510	* setTimeout(function() {
1511	* order.push(num);
1512	* done(null, num % 2);
1513	* }, num * 10);
1514	* };
1515	* async.omitLimit(array, 2, iterator, function(err, res) {
1516	* console.log(res); // { '3': 4, '4': 2 }
1517	* console.log(order); // [1, 3, 5, 2, 4]
1518	* });
1519	*
1520	* @example
1521	*
1522	* // array with index
1523	* var order = [];
1524	* var array = [1, 5, 3, 4, 2];
1525	* var iterator = function(num, index, done) {
1526	* setTimeout(function() {
1527	* order.push([num, index]);
1528	* done(null, num % 2);
1529	* }, num * 10);
1530	* };
1531	* async.omitLimit(array, 2, iterator, function(err, res) {
1532	* console.log(res); // { '3': 4, '4': 2 }
1533	* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
1534	* });
1535	*
1536	* @example
1537	*
1538	* // object
1539	* var order = [];
1540	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
1541	* var iterator = function(num, done) {
1542	* setTimeout(function() {
1543	* order.push(num);
1544	* done(null, num % 2);
1545	* }, num * 10);
1546	* };
1547	* async.omitLimit(object, 2, iterator, function(err, res) {
1548	* console.log(res); // { d: 4, e: 2 }
1549	* console.log(order); // [1, 3, 5, 2, 4]
1550	* });
1551	*
1552	* @example
1553	*
1554	* // object with key
1555	* var order = [];
1556	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
1557	* var iterator = function(num, key, done) {
1558	* setTimeout(function() {
1559	* order.push([num, key]);
1560	* done(null, num % 2);
1561	* }, num * 10);
1562	* };
1563	* async.omitLimit(object, 2, iterator, function(err, res) {
1564	* console.log(res); // { d: 4, e: 2 }
1565	* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
1566	* });
1567	*
1568	*/
1569	var omitLimit = createPickLimit(false);
1570
1571	/**
1572	* @memberof async
1573	* @namespace transform
1574	* @param {Array\|Object} collection
1575	* @param {Array\|Object\|Function} [accumulator]
1576	* @param {Function} [iterator]
1577	* @param {Function} [callback]
1578	* @example
1579	*
1580	* // array
1581	* var order = [];
1582	* var collection = [1, 3, 2, 4];
1583	* var iterator = function(result, num, done) {
1584	* setTimeout(function() {
1585	* order.push(num);
1586	* result.push(num)
1587	* done();
1588	* }, num * 10);
1589	* };
1590	* async.transform(collection, iterator, function(err, res) {
1591	* console.log(res); // [1, 2, 3, 4]
1592	* console.log(order); // [1, 2, 3, 4]
1593	* });
1594	*
1595	* @example
1596	*
1597	* // array with index and accumulator
1598	* var order = [];
1599	* var collection = [1, 3, 2, 4];
1600	* var iterator = function(result, num, index, done) {
1601	* setTimeout(function() {
1602	* order.push([num, index]);
1603	* result[index] = num;
1604	* done();
1605	* }, num * 10);
1606	* };
1607	* async.transform(collection, {}, iterator, function(err, res) {
1608	* console.log(res); // { '0': 1, '1': 3, '2': 2, '3': 4 }
1609	* console.log(order); // [[1, 0], [2, 2], [3, 1], [4, 3]]
1610	* });
1611	*
1612	* @example
1613	*
1614	* // object with accumulator
1615	* var order = [];
1616	* var object = { a: 1, b: 3, c: 2, d: 4 };
1617	* var iterator = function(result, num, done) {
1618	* setTimeout(function() {
1619	* order.push(num);
1620	* result.push(num);
1621	* done();
1622	* }, num * 10);
1623	* };
1624	* async.transform(collection, [], iterator, function(err, res) {
1625	* console.log(res); // [1, 2, 3, 4]
1626	* console.log(order); // [1, 2, 3, 4]
1627	* });
1628	*
1629	* @example
1630	*
1631	* // object with key
1632	* var order = [];
1633	* var object = { a: 1, b: 3, c: 2, d: 4 };
1634	* var iterator = function(result, num, key, done) {
1635	* setTimeout(function() {
1636	* order.push([num, key]);
1637	* result[key] = num;
1638	* done();
1639	* }, num * 10);
1640	* };
1641	* async.transform(collection, iterator, function(err, res) {
1642	* console.log(res); // { a: 1, b: 3, c: 2, d: 4 }
1643	* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b'], [4, 'd']]
1644	* });
1645	*
1646	*/
1647	var transform = createTransform(arrayEachResult, baseEachResult, symbolEachResult);
1648
1649	/**
1650	* @memberof async
1651	* @namespace sortBy
1652	* @param {Array\|Object} collection
1653	* @param {Function} iterator
1654	* @param {Function} callback
1655	* @example
1656	*
1657	* // array
1658	* var order = [];
1659	* var array = [1, 3, 2];
1660	* var iterator = function(num, done) {
1661	* setTimeout(function() {
1662	* order.push(num);
1663	* done(null, num);
1664	* }, num * 10);
1665	* };
1666	* async.sortBy(array, iterator, function(err, res) {
1667	* console.log(res); // [1, 2, 3];
1668	* console.log(order); // [1, 2, 3]
1669	* });
1670	*
1671	* @example
1672	*
1673	* // array with index
1674	* var order = [];
1675	* var array = [1, 3, 2];
1676	* var iterator = function(num, index, done) {
1677	* setTimeout(function() {
1678	* order.push([num, index]);
1679	* done(null, num);
1680	* }, num * 10);
1681	* };
1682	* async.sortBy(array, iterator, function(err, res) {
1683	* console.log(res); // [1, 2, 3]
1684	* console.log(order); // [[1, 0], [2, 2], [3, 1]]
1685	* });
1686	*
1687	* @example
1688	*
1689	* // object
1690	* var order = [];
1691	* var object = { a: 1, b: 3, c: 2 };
1692	* var iterator = function(num, done) {
1693	* setTimeout(function() {
1694	* order.push(num);
1695	* done(null, num);
1696	* }, num * 10);
1697	* };
1698	* async.sortBy(object, iterator, function(err, res) {
1699	* console.log(res); // [1, 2, 3]
1700	* console.log(order); // [1, 2, 3]
1701	* });
1702	*
1703	* @example
1704	*
1705	* // object with key
1706	* var order = [];
1707	* var object = { a: 1, b: 3, c: 2 };
1708	* var iterator = function(num, key, done) {
1709	* setTimeout(function() {
1710	* order.push([num, key]);
1711	* done(null, num);
1712	* }, num * 10);
1713	* };
1714	* async.sortBy(object, iterator, function(err, res) {
1715	* console.log(res); // [1, 2, 3]
1716	* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b']]
1717	* });
1718	*
1719	*/
1720	var sortBy = createSortBy(arrayEachIndexValue, baseEachIndexValue, symbolEachIndexValue);
1721
1722	/**
1723	* @memberof async
1724	* @namespace concat
1725	* @param {Array\|Object} collection
1726	* @param {Function} iterator
1727	* @param {Function} callback
1728	* @example
1729	*
1730	* // array
1731	* var order = [];
1732	* var array = [1, 3, 2];
1733	* var iterator = function(num, done) {
1734	* setTimeout(function() {
1735	* order.push(num);
1736	* done(null, [num]);
1737	* }, num * 10);
1738	* };
1739	* async.concat(array, iterator, function(err, res) {
1740	* console.log(res); // [1, 2, 3];
1741	* console.log(order); // [1, 2, 3]
1742	* });
1743	*
1744	* @example
1745	*
1746	* // array with index
1747	* var order = [];
1748	* var array = [1, 3, 2];
1749	* var iterator = function(num, index, done) {
1750	* setTimeout(function() {
1751	* order.push([num, index]);
1752	* done(null, [num]);
1753	* }, num * 10);
1754	* };
1755	* async.concat(array, iterator, function(err, res) {
1756	* console.log(res); // [1, 2, 3]
1757	* console.log(order); // [[1, 0], [2, 2], [3, 1]]
1758	* });
1759	*
1760	* @example
1761	*
1762	* // object
1763	* var order = [];
1764	* var object = { a: 1, b: 3, c: 2 };
1765	* var iterator = function(num, done) {
1766	* setTimeout(function() {
1767	* order.push(num);
1768	* done(null, [num]);
1769	* }, num * 10);
1770	* };
1771	* async.concat(object, iterator, function(err, res) {
1772	* console.log(res); // [1, 2, 3]
1773	* console.log(order); // [1, 2, 3]
1774	* });
1775	*
1776	* @example
1777	*
1778	* // object with key
1779	* var order = [];
1780	* var object = { a: 1, b: 3, c: 2 };
1781	* var iterator = function(num, key, done) {
1782	* setTimeout(function() {
1783	* order.push([num, key]);
1784	* done(null, [num]);
1785	* }, num * 10);
1786	* };
1787	* async.concat(object, iterator, function(err, res) {
1788	* console.log(res); // [1, 2, 3]
1789	* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b']]
1790	* });
1791	*
1792	*/
1793	var concat = createConcat(arrayEachIndex, baseEachIndex, symbolEachIndex);
1794
1795	/**
1796	* @memberof async
1797	* @namespace groupBy
1798	* @param {Array\|Object} collection
1799	* @param {Function} iterator
1800	* @param {Function} callback
1801	* @example
1802	*
1803	* // array
1804	* var order = [];
1805	* var array = [4.2, 6.4, 6.1];
1806	* var iterator = function(num, done) {
1807	* setTimeout(function() {
1808	* order.push(num);
1809	* done(null, Math.floor(num));
1810	* }, num * 10);
1811	* };
1812	* async.groupBy(array, iterator, function(err, res) {
1813	* console.log(res); // { '4': [4.2], '6': [6.1, 6.4] }
1814	* console.log(order); // [4.2, 6.1, 6.4]
1815	* });
1816	*
1817	* @example
1818	*
1819	* // array with index
1820	* var order = [];
1821	* var array = [4.2, 6.4, 6.1];
1822	* var iterator = function(num, index, done) {
1823	* setTimeout(function() {
1824	* order.push([num, index]);
1825	* done(null, Math.floor(num));
1826	* }, num * 10);
1827	* };
1828	* async.groupBy(array, iterator, function(err, res) {
1829	* console.log(res); // { '4': [4.2], '6': [6.1, 6.4] }
1830	* console.log(order); // [[4.2, 0], [6.1, 2], [6.4, 1]]
1831	* });
1832	*
1833	* @example
1834	*
1835	* // object
1836	* var order = [];
1837	* var object = { a: 4.2, b: 6.4, c: 6.1 };
1838	* var iterator = function(num, done) {
1839	* setTimeout(function() {
1840	* order.push(num);
1841	* done(null, Math.floor(num));
1842	* }, num * 10);
1843	* };
1844	* async.groupBy(object, iterator, function(err, res) {
1845	* console.log(res); // { '4': [4.2], '6': [6.1, 6.4] }
1846	* console.log(order); // [4.2, 6.1, 6.4]
1847	* });
1848	*
1849	* @example
1850	*
1851	* // object with key
1852	* var order = [];
1853	* var object = { a: 4.2, b: 6.4, c: 6.1 };
1854	* var iterator = function(num, key, done) {
1855	* setTimeout(function() {
1856	* order.push([num, key]);
1857	* done(null, Math.floor(num));
1858	* }, num * 10);
1859	* };
1860	* async.groupBy(object, iterator, function(err, res) {
1861	* console.log(res); // { '4': [4.2], '6': [6.1, 6.4] }
1862	* console.log(order); // [[4.2, 'a'], [6.1, 'c'], [6.4, 'b']]
1863	* });
1864	*
1865	*/
1866	var groupBy = createGroupBy(arrayEachValue, baseEachValue, symbolEachValue);
1867
1868	/**
1869	* @memberof async
1870	* @namespace parallel
1871	* @param {Array\|Object} tasks - functions
1872	* @param {Function} callback
1873	* @example
1874	*
1875	* var order = [];
1876	* var tasks = [
1877	* function(done) {
1878	* setTimeout(function() {
1879	* order.push(1);
1880	* done(null, 1);
1881	* }, 10);
1882	* },
1883	* function(done) {
1884	* setTimeout(function() {
1885	* order.push(2);
1886	* done(null, 2);
1887	* }, 30);
1888	* },
1889	* function(done) {
1890	* setTimeout(function() {
1891	* order.push(3);
1892	* done(null, 3);
1893	* }, 40);
1894	* },
1895	* function(done) {
1896	* setTimeout(function() {
1897	* order.push(4);
1898	* done(null, 4);
1899	* }, 20);
1900	* }
1901	* ];
1902	* async.parallel(tasks, function(err, res) {
1903	* console.log(res); // [1, 2, 3, 4];
1904	* console.log(order); // [1, 4, 2, 3]
1905	* });
1906	*
1907	* @example
1908	*
1909	* var order = [];
1910	* var tasks = {
1911	* 'a': function(done) {
1912	* setTimeout(function() {
1913	* order.push(1);
1914	* done(null, 1);
1915	* }, 10);
1916	* },
1917	* 'b': function(done) {
1918	* setTimeout(function() {
1919	* order.push(2);
1920	* done(null, 2);
1921	* }, 30);
1922	* },
1923	* 'c': function(done) {
1924	* setTimeout(function() {
1925	* order.push(3);
1926	* done(null, 3);
1927	* }, 40);
1928	* },
1929	* 'd': function(done) {
1930	* setTimeout(function() {
1931	* order.push(4);
1932	* done(null, 4);
1933	* }, 20);
1934	* }
1935	* };
1936	* async.parallel(tasks, function(err, res) {
1937	* console.log(res); // { a: 1, b: 2, c: 3, d:4 }
1938	* console.log(order); // [1, 4, 2, 3]
1939	* });
1940	*
1941	*/
1942	var parallel = createParallel(arrayEachFunc, baseEachFunc);
1943
1944	/**
1945	* @memberof async
1946	* @namespace applyEach
1947	*/
1948	var applyEach = createApplyEach(map);
1949
1950	/**
1951	* @memberof async
1952	* @namespace applyEachSeries
1953	*/
1954	var applyEachSeries = createApplyEach(mapSeries);
1955
1956	/**
1957	* @memberof async
1958	* @namespace log
1959	*/
1960	var log = createLogger('log');
1961
1962	/**
1963	* @memberof async
1964	* @namespace dir
1965	*/
1966	var dir = createLogger('dir');
1967
1968	/**
1969	* @version 2.6.2
1970	* @namespace async
1971	*/
1972	var index = {
1973	VERSION: '2.6.2',
1974
1975	// Collections
1976	each: each,
1977	eachSeries: eachSeries,
1978	eachLimit: eachLimit,
1979	forEach: each,
1980	forEachSeries: eachSeries,
1981	forEachLimit: eachLimit,
1982	eachOf: each,
1983	eachOfSeries: eachSeries,
1984	eachOfLimit: eachLimit,
1985	forEachOf: each,
1986	forEachOfSeries: eachSeries,
1987	forEachOfLimit: eachLimit,
1988	map: map,
1989	mapSeries: mapSeries,
1990	mapLimit: mapLimit,
1991	mapValues: mapValues,
1992	mapValuesSeries: mapValuesSeries,
1993	mapValuesLimit: mapValuesLimit,
1994	filter: filter,
1995	filterSeries: filterSeries,
1996	filterLimit: filterLimit,
1997	select: filter,
1998	selectSeries: filterSeries,
1999	selectLimit: filterLimit,
2000	reject: reject,
2001	rejectSeries: rejectSeries,
2002	rejectLimit: rejectLimit,
2003	detect: detect,
2004	detectSeries: detectSeries,
2005	detectLimit: detectLimit,
2006	find: detect,
2007	findSeries: detectSeries,
2008	findLimit: detectLimit,
2009	pick: pick,
2010	pickSeries: pickSeries,
2011	pickLimit: pickLimit,
2012	omit: omit,
2013	omitSeries: omitSeries,
2014	omitLimit: omitLimit,
2015	reduce: reduce,
2016	inject: reduce,
2017	foldl: reduce,
2018	reduceRight: reduceRight,
2019	foldr: reduceRight,
2020	transform: transform,
2021	transformSeries: transformSeries,
2022	transformLimit: transformLimit,
2023	sortBy: sortBy,
2024	sortBySeries: sortBySeries,
2025	sortByLimit: sortByLimit,
2026	some: some,
2027	someSeries: someSeries,
2028	someLimit: someLimit,
2029	any: some,
2030	anySeries: someSeries,
2031	anyLimit: someLimit,
2032	every: every,
2033	everySeries: everySeries,
2034	everyLimit: everyLimit,
2035	all: every,
2036	allSeries: everySeries,
2037	allLimit: everyLimit,
2038	concat: concat,
2039	concatSeries: concatSeries,
2040	concatLimit: concatLimit,
2041	groupBy: groupBy,
2042	groupBySeries: groupBySeries,
2043	groupByLimit: groupByLimit,
2044
2045	// Control Flow
2046	parallel: parallel,
2047	series: series,
2048	parallelLimit: parallelLimit,
2049	tryEach: tryEach,
2050	waterfall: waterfall,
2051	angelFall: angelFall,
2052	angelfall: angelFall,
2053	whilst: whilst,
2054	doWhilst: doWhilst,
2055	until: until,
2056	doUntil: doUntil,
2057	during: during,
2058	doDuring: doDuring,
2059	forever: forever,
2060	compose: compose,
2061	seq: seq,
2062	applyEach: applyEach,
2063	applyEachSeries: applyEachSeries,
2064	queue: queue,
2065	priorityQueue: priorityQueue,
2066	cargo: cargo,
2067	auto: auto,
2068	autoInject: autoInject,
2069	retry: retry,
2070	retryable: retryable,
2071	iterator: iterator,
2072	times: times,
2073	timesSeries: timesSeries,
2074	timesLimit: timesLimit,
2075	race: race,
2076
2077	// Utils
2078	apply: apply,
2079	nextTick: asyncNextTick,
2080	setImmediate: asyncSetImmediate,
2081	memoize: memoize,
2082	unmemoize: unmemoize,
2083	ensureAsync: ensureAsync,
2084	constant: constant,
2085	asyncify: asyncify,
2086	wrapSync: asyncify,
2087	log: log,
2088	dir: dir,
2089	reflect: reflect,
2090	reflectAll: reflectAll,
2091	timeout: timeout,
2092	createLogger: createLogger,
2093
2094	// Mode
2095	safe: safe,
2096	fast: fast
2097	};
2098
2099	exports['default'] = index;
2100	baseEachSync(
2101	index,
2102	function(func, key) {
2103	exports[key] = func;
2104	},
2105	nativeKeys(index)
2106	);
2107
2108	/**
2109	* @private
2110	*/
2111	function createImmediate(safeMode) {
2112	var delay = function delay(fn) {
2113	var args = slice(arguments, 1);
2114	setTimeout(function() {
2115	fn.apply(null, args);
2116	});
2117	};
2118	asyncSetImmediate = typeof setImmediate === func ? setImmediate : delay;
2119	if (typeof process === obj && typeof process.nextTick === func) {
2120	nextTick = /^v0.10/.test(process.version) ? asyncSetImmediate : process.nextTick;
2121	asyncNextTick = /^v0/.test(process.version) ? asyncSetImmediate : process.nextTick;
2122	} else {
2123	asyncNextTick = nextTick = asyncSetImmediate;
2124	}
2125	if (safeMode === false) {
2126	nextTick = function(cb) {
2127	cb();
2128	};
2129	}
2130	}
2131
2132	/* sync functions based on lodash */
2133
2134	/**
2135	* Converts `arguments` to an array.
2136	*
2137	* @private
2138	* @param {Array} array = The array to slice.
2139	*/
2140	function createArray(array) {
2141	var index = -1;
2142	var size = array.length;
2143	var result = Array(size);
2144
2145	while (++index < size) {
2146	result[index] = array[index];
2147	}
2148	return result;
2149	}
2150
2151	/**
2152	* Create an array from `start`
2153	*
2154	* @private
2155	* @param {Array} array - The array to slice.
2156	* @param {number} start - The start position.
2157	*/
2158	function slice(array, start) {
2159	var end = array.length;
2160	var index = -1;
2161	var size = end - start;
2162	if (size <= 0) {
2163	return [];
2164	}
2165	var result = Array(size);
2166
2167	while (++index < size) {
2168	result[index] = array[index + start];
2169	}
2170	return result;
2171	}
2172
2173	/**
2174	* @private
2175	* @param {Object} object
2176	*/
2177	function objectClone(object) {
2178	var keys = nativeKeys(object);
2179	var size = keys.length;
2180	var index = -1;
2181	var result = {};
2182
2183	while (++index < size) {
2184	var key = keys[index];
2185	result[key] = object[key];
2186	}
2187	return result;
2188	}
2189
2190	/**
2191	* Create an array with all falsey values removed.
2192	*
2193	* @private
2194	* @param {Array} array - The array to compact.
2195	*/
2196	function compact(array) {
2197	var index = -1;
2198	var size = array.length;
2199	var result = [];
2200
2201	while (++index < size) {
2202	var value = array[index];
2203	if (value) {
2204	result[result.length] = value;
2205	}
2206	}
2207	return result;
2208	}
2209
2210	/**
2211	* Create an array of reverse sequence.
2212	*
2213	* @private
2214	* @param {Array} array - The array to reverse.
2215	*/
2216	function reverse(array) {
2217	var index = -1;
2218	var size = array.length;
2219	var result = Array(size);
2220	var resIndex = size;
2221
2222	while (++index < size) {
2223	result[--resIndex] = array[index];
2224	}
2225	return result;
2226	}
2227
2228	/**
2229	* Checks if key exists in object property.
2230	*
2231	* @private
2232	* @param {Object} object - The object to inspect.
2233	* @param {string} key - The key to check.
2234	*/
2235	function has(object, key) {
2236	return object.hasOwnProperty(key);
2237	}
2238
2239	/**
2240	* Check if target exists in array.
2241	* @private
2242	* @param {Array} array
2243	* @param {*} target
2244	*/
2245	function notInclude(array, target) {
2246	var index = -1;
2247	var size = array.length;
2248
2249	while (++index < size) {
2250	if (array[index] === target) {
2251	return false;
2252	}
2253	}
2254	return true;
2255	}
2256
2257	/**
2258	* @private
2259	* @param {Array} array - The array to iterate over.
2260	* @param {Function} iterator - The function invoked per iteration.
2261	*/
2262	function arrayEachSync(array, iterator) {
2263	var index = -1;
2264	var size = array.length;
2265
2266	while (++index < size) {
2267	iterator(array[index], index);
2268	}
2269	return array;
2270	}
2271
2272	/**
2273	* @private
2274	* @param {Object} object - The object to iterate over.
2275	* @param {Function} iterator - The function invoked per iteration.
2276	* @param {Array} keys
2277	*/
2278	function baseEachSync(object, iterator, keys) {
2279	var index = -1;
2280	var size = keys.length;
2281
2282	while (++index < size) {
2283	var key = keys[index];
2284	iterator(object[key], key);
2285	}
2286	return object;
2287	}
2288
2289	/**
2290	* @private
2291	* @param {number} n
2292	* @param {Function} iterator
2293	*/
2294	function timesSync(n, iterator) {
2295	var index = -1;
2296	while (++index < n) {
2297	iterator(index);
2298	}
2299	}
2300
2301	/**
2302	* @private
2303	* @param {Array} array
2304	* @param {number[]} criteria
2305	*/
2306	function sortByCriteria(array, criteria) {
2307	var l = array.length;
2308	var indices = Array(l);
2309	var i;
2310	for (i = 0; i < l; i++) {
2311	indices[i] = i;
2312	}
2313	quickSort(criteria, 0, l - 1, indices);
2314	var result = Array(l);
2315	for (var n = 0; n < l; n++) {
2316	i = indices[n];
2317	result[n] = i === undefined ? array[n] : array[i];
2318	}
2319	return result;
2320	}
2321
2322	function partition(array, i, j, mid, indices) {
2323	var l = i;
2324	var r = j;
2325	while (l <= r) {
2326	i = l;
2327	while (l < r && array[l] < mid) {
2328	l++;
2329	}
2330	while (r >= i && array[r] >= mid) {
2331	r--;
2332	}
2333	if (l > r) {
2334	break;
2335	}
2336	swap(array, indices, l++, r--);
2337	}
2338	return l;
2339	}
2340
2341	function swap(array, indices, l, r) {
2342	var n = array[l];
2343	array[l] = array[r];
2344	array[r] = n;
2345	var i = indices[l];
2346	indices[l] = indices[r];
2347	indices[r] = i;
2348	}
2349
2350	function quickSort(array, i, j, indices) {
2351	if (i === j) {
2352	return;
2353	}
2354	var k = i;
2355	while (++k <= j && array[i] === array[k]) {
2356	var l = k - 1;
2357	if (indices[l] > indices[k]) {
2358	var index = indices[l];
2359	indices[l] = indices[k];
2360	indices[k] = index;
2361	}
2362	}
2363	if (k > j) {
2364	return;
2365	}
2366	var p = array[i] > array[k] ? i : k;
2367	k = partition(array, i, j, array[p], indices);
2368	quickSort(array, i, k - 1, indices);
2369	quickSort(array, k, j, indices);
2370	}
2371
2372	/**
2373	* @Private
2374	*/
2375	function makeConcatResult(array) {
2376	var result = [];
2377	arrayEachSync(array, function(value) {
2378	if (value === noop) {
2379	return;
2380	}
2381	if (isArray(value)) {
2382	nativePush.apply(result, value);
2383	} else {
2384	result.push(value);
2385	}
2386	});
2387	return result;
2388	}
2389
2390	/* async functions */
2391
2392	/**
2393	* @private
2394	*/
2395	function arrayEach(array, iterator, callback) {
2396	var index = -1;
2397	var size = array.length;
2398
2399	if (iterator.length === 3) {
2400	while (++index < size) {
2401	iterator(array[index], index, onlyOnce(callback));
2402	}
2403	} else {
2404	while (++index < size) {
2405	iterator(array[index], onlyOnce(callback));
2406	}
2407	}
2408	}
2409
2410	/**
2411	* @private
2412	*/
2413	function baseEach(object, iterator, callback, keys) {
2414	var key;
2415	var index = -1;
2416	var size = keys.length;
2417
2418	if (iterator.length === 3) {
2419	while (++index < size) {
2420	key = keys[index];
2421	iterator(object[key], key, onlyOnce(callback));
2422	}
2423	} else {
2424	while (++index < size) {
2425	iterator(object[keys[index]], onlyOnce(callback));
2426	}
2427	}
2428	}
2429
2430	/**
2431	* @private
2432	*/
2433	function symbolEach(collection, iterator, callback) {
2434	var iter = collection[iteratorSymbol]();
2435	var index = 0;
2436	var item;
2437	if (iterator.length === 3) {
2438	while ((item = iter.next()).done === false) {
2439	iterator(item.value, index++, onlyOnce(callback));
2440	}
2441	} else {
2442	while ((item = iter.next()).done === false) {
2443	index++;
2444	iterator(item.value, onlyOnce(callback));
2445	}
2446	}
2447	return index;
2448	}
2449
2450	/**
2451	* @private
2452	*/
2453	function arrayEachResult(array, result, iterator, callback) {
2454	var index = -1;
2455	var size = array.length;
2456
2457	if (iterator.length === 4) {
2458	while (++index < size) {
2459	iterator(result, array[index], index, onlyOnce(callback));
2460	}
2461	} else {
2462	while (++index < size) {
2463	iterator(result, array[index], onlyOnce(callback));
2464	}
2465	}
2466	}
2467
2468	/**
2469	* @private
2470	*/
2471	function baseEachResult(object, result, iterator, callback, keys) {
2472	var key;
2473	var index = -1;
2474	var size = keys.length;
2475
2476	if (iterator.length === 4) {
2477	while (++index < size) {
2478	key = keys[index];
2479	iterator(result, object[key], key, onlyOnce(callback));
2480	}
2481	} else {
2482	while (++index < size) {
2483	iterator(result, object[keys[index]], onlyOnce(callback));
2484	}
2485	}
2486	}
2487
2488	/**
2489	* @private
2490	*/
2491	function symbolEachResult(collection, result, iterator, callback) {
2492	var item;
2493	var index = 0;
2494	var iter = collection[iteratorSymbol]();
2495
2496	if (iterator.length === 4) {
2497	while ((item = iter.next()).done === false) {
2498	iterator(result, item.value, index++, onlyOnce(callback));
2499	}
2500	} else {
2501	while ((item = iter.next()).done === false) {
2502	index++;
2503	iterator(result, item.value, onlyOnce(callback));
2504	}
2505	}
2506	return index;
2507	}
2508
2509	/**
2510	* @private
2511	*/
2512	function arrayEachFunc(array, createCallback) {
2513	var index = -1;
2514	var size = array.length;
2515
2516	while (++index < size) {
2517	array[index](createCallback(index));
2518	}
2519	}
2520
2521	/**
2522	* @private
2523	*/
2524	function baseEachFunc(object, createCallback, keys) {
2525	var key;
2526	var index = -1;
2527	var size = keys.length;
2528
2529	while (++index < size) {
2530	key = keys[index];
2531	object[key](createCallback(key));
2532	}
2533	}
2534
2535	/**
2536	* @private
2537	*/
2538	function arrayEachIndex(array, iterator, createCallback) {
2539	var index = -1;
2540	var size = array.length;
2541
2542	if (iterator.length === 3) {
2543	while (++index < size) {
2544	iterator(array[index], index, createCallback(index));
2545	}
2546	} else {
2547	while (++index < size) {
2548	iterator(array[index], createCallback(index));
2549	}
2550	}
2551	}
2552
2553	/**
2554	* @private
2555	*/
2556	function baseEachIndex(object, iterator, createCallback, keys) {
2557	var key;
2558	var index = -1;
2559	var size = keys.length;
2560
2561	if (iterator.length === 3) {
2562	while (++index < size) {
2563	key = keys[index];
2564	iterator(object[key], key, createCallback(index));
2565	}
2566	} else {
2567	while (++index < size) {
2568	iterator(object[keys[index]], createCallback(index));
2569	}
2570	}
2571	}
2572
2573	/**
2574	* @private
2575	*/
2576	function symbolEachIndex(collection, iterator, createCallback) {
2577	var item;
2578	var index = 0;
2579	var iter = collection[iteratorSymbol]();
2580
2581	if (iterator.length === 3) {
2582	while ((item = iter.next()).done === false) {
2583	iterator(item.value, index, createCallback(index++));
2584	}
2585	} else {
2586	while ((item = iter.next()).done === false) {
2587	iterator(item.value, createCallback(index++));
2588	}
2589	}
2590	return index;
2591	}
2592
2593	/**
2594	* @private
2595	*/
2596	function baseEachKey(object, iterator, createCallback, keys) {
2597	var key;
2598	var index = -1;
2599	var size = keys.length;
2600
2601	if (iterator.length === 3) {
2602	while (++index < size) {
2603	key = keys[index];
2604	iterator(object[key], key, createCallback(key));
2605	}
2606	} else {
2607	while (++index < size) {
2608	key = keys[index];
2609	iterator(object[key], createCallback(key));
2610	}
2611	}
2612	}
2613
2614	/**
2615	* @private
2616	*/
2617	function symbolEachKey(collection, iterator, createCallback) {
2618	var item;
2619	var index = 0;
2620	var iter = collection[iteratorSymbol]();
2621
2622	if (iterator.length === 3) {
2623	while ((item = iter.next()).done === false) {
2624	iterator(item.value, index, createCallback(index++));
2625	}
2626	} else {
2627	while ((item = iter.next()).done === false) {
2628	iterator(item.value, createCallback(index++));
2629	}
2630	}
2631	return index;
2632	}
2633
2634	/**
2635	* @private
2636	*/
2637	function arrayEachValue(array, iterator, createCallback) {
2638	var value;
2639	var index = -1;
2640	var size = array.length;
2641
2642	if (iterator.length === 3) {
2643	while (++index < size) {
2644	value = array[index];
2645	iterator(value, index, createCallback(value));
2646	}
2647	} else {
2648	while (++index < size) {
2649	value = array[index];
2650	iterator(value, createCallback(value));
2651	}
2652	}
2653	}
2654
2655	/**
2656	* @private
2657	*/
2658	function baseEachValue(object, iterator, createCallback, keys) {
2659	var key, value;
2660	var index = -1;
2661	var size = keys.length;
2662
2663	if (iterator.length === 3) {
2664	while (++index < size) {
2665	key = keys[index];
2666	value = object[key];
2667	iterator(value, key, createCallback(value));
2668	}
2669	} else {
2670	while (++index < size) {
2671	value = object[keys[index]];
2672	iterator(value, createCallback(value));
2673	}
2674	}
2675	}
2676
2677	/**
2678	* @private
2679	*/
2680	function symbolEachValue(collection, iterator, createCallback) {
2681	var value, item;
2682	var index = 0;
2683	var iter = collection[iteratorSymbol]();
2684
2685	if (iterator.length === 3) {
2686	while ((item = iter.next()).done === false) {
2687	value = item.value;
2688	iterator(value, index++, createCallback(value));
2689	}
2690	} else {
2691	while ((item = iter.next()).done === false) {
2692	index++;
2693	value = item.value;
2694	iterator(value, createCallback(value));
2695	}
2696	}
2697	return index;
2698	}
2699
2700	/**
2701	* @private
2702	*/
2703	function arrayEachIndexValue(array, iterator, createCallback) {
2704	var value;
2705	var index = -1;
2706	var size = array.length;
2707
2708	if (iterator.length === 3) {
2709	while (++index < size) {
2710	value = array[index];
2711	iterator(value, index, createCallback(index, value));
2712	}
2713	} else {
2714	while (++index < size) {
2715	value = array[index];
2716	iterator(value, createCallback(index, value));
2717	}
2718	}
2719	}
2720
2721	/**
2722	* @private
2723	*/
2724	function baseEachIndexValue(object, iterator, createCallback, keys) {
2725	var key, value;
2726	var index = -1;
2727	var size = keys.length;
2728
2729	if (iterator.length === 3) {
2730	while (++index < size) {
2731	key = keys[index];
2732	value = object[key];
2733	iterator(value, key, createCallback(index, value));
2734	}
2735	} else {
2736	while (++index < size) {
2737	value = object[keys[index]];
2738	iterator(value, createCallback(index, value));
2739	}
2740	}
2741	}
2742
2743	/**
2744	* @private
2745	*/
2746	function symbolEachIndexValue(collection, iterator, createCallback) {
2747	var value, item;
2748	var index = 0;
2749	var iter = collection[iteratorSymbol]();
2750
2751	if (iterator.length === 3) {
2752	while ((item = iter.next()).done === false) {
2753	value = item.value;
2754	iterator(value, index, createCallback(index++, value));
2755	}
2756	} else {
2757	while ((item = iter.next()).done === false) {
2758	value = item.value;
2759	iterator(value, createCallback(index++, value));
2760	}
2761	}
2762	return index;
2763	}
2764
2765	/**
2766	* @private
2767	*/
2768	function baseEachKeyValue(object, iterator, createCallback, keys) {
2769	var key, value;
2770	var index = -1;
2771	var size = keys.length;
2772
2773	if (iterator.length === 3) {
2774	while (++index < size) {
2775	key = keys[index];
2776	value = object[key];
2777	iterator(value, key, createCallback(key, value));
2778	}
2779	} else {
2780	while (++index < size) {
2781	key = keys[index];
2782	value = object[key];
2783	iterator(value, createCallback(key, value));
2784	}
2785	}
2786	}
2787
2788	/**
2789	* @private
2790	*/
2791	function symbolEachKeyValue(collection, iterator, createCallback) {
2792	var value, item;
2793	var index = 0;
2794	var iter = collection[iteratorSymbol]();
2795
2796	if (iterator.length === 3) {
2797	while ((item = iter.next()).done === false) {
2798	value = item.value;
2799	iterator(value, index, createCallback(index++, value));
2800	}
2801	} else {
2802	while ((item = iter.next()).done === false) {
2803	value = item.value;
2804	iterator(value, createCallback(index++, value));
2805	}
2806	}
2807	return index;
2808	}
2809
2810	/**
2811	* @private
2812	* @param {Function} func
2813	*/
2814	function onlyOnce(func) {
2815	return function(err, res) {
2816	var fn = func;
2817	func = throwError;
2818	fn(err, res);
2819	};
2820	}
2821
2822	/**
2823	* @private
2824	* @param {Function} func
2825	*/
2826	function once(func) {
2827	return function(err, res) {
2828	var fn = func;
2829	func = noop;
2830	fn(err, res);
2831	};
2832	}
2833
2834	/**
2835	* @private
2836	* @param {Function} arrayEach
2837	* @param {Function} baseEach
2838	*/
2839	function createEach(arrayEach, baseEach, symbolEach) {
2840	return function each(collection, iterator, callback) {
2841	callback = once(callback \|\| noop);
2842	var size, keys;
2843	var completed = 0;
2844	if (isArray(collection)) {
2845	size = collection.length;
2846	arrayEach(collection, iterator, done);
2847	} else if (!collection) {
2848	} else if (iteratorSymbol && collection[iteratorSymbol]) {
2849	size = symbolEach(collection, iterator, done);
2850	size && size === completed && callback(null);
2851	} else if (typeof collection === obj) {
2852	keys = nativeKeys(collection);
2853	size = keys.length;
2854	baseEach(collection, iterator, done, keys);
2855	}
2856	if (!size) {
2857	callback(null);
2858	}
2859
2860	function done(err, bool) {
2861	if (err) {
2862	callback = once(callback);
2863	callback(err);
2864	} else if (++completed === size) {
2865	callback(null);
2866	} else if (bool === false) {
2867	callback = once(callback);
2868	callback(null);
2869	}
2870	}
2871	};
2872	}
2873
2874	/**
2875	* @private
2876	* @param {Function} arrayEach
2877	* @param {Function} baseEach
2878	* @param {Function} symbolEach
2879	*/
2880	function createMap(arrayEach, baseEach, symbolEach, useArray) {
2881	var init, clone;
2882	if (useArray) {
2883	init = Array;
2884	clone = createArray;
2885	} else {
2886	init = function() {
2887	return {};
2888	};
2889	clone = objectClone;
2890	}
2891
2892	return function(collection, iterator, callback) {
2893	callback = callback \|\| noop;
2894	var size, keys, result;
2895	var completed = 0;
2896
2897	if (isArray(collection)) {
2898	size = collection.length;
2899	result = init(size);
2900	arrayEach(collection, iterator, createCallback);
2901	} else if (!collection) {
2902	} else if (iteratorSymbol && collection[iteratorSymbol]) {
2903	// TODO: size could be changed
2904	result = init(0);
2905	size = symbolEach(collection, iterator, createCallback);
2906	size && size === completed && callback(null, result);
2907	} else if (typeof collection === obj) {
2908	keys = nativeKeys(collection);
2909	size = keys.length;
2910	result = init(size);
2911	baseEach(collection, iterator, createCallback, keys);
2912	}
2913	if (!size) {
2914	callback(null, init());
2915	}
2916
2917	function createCallback(key) {
2918	return function done(err, res) {
2919	if (key === null) {
2920	throwError();
2921	}
2922	if (err) {
2923	key = null;
2924	callback = once(callback);
2925	callback(err, clone(result));
2926	return;
2927	}
2928	result[key] = res;
2929	key = null;
2930	if (++completed === size) {
2931	callback(null, result);
2932	}
2933	};
2934	}
2935	};
2936	}
2937
2938	/**
2939	* @private
2940	* @param {Function} arrayEach
2941	* @param {Function} baseEach
2942	* @param {Function} symbolEach
2943	* @param {boolean} bool
2944	*/
2945	function createFilter(arrayEach, baseEach, symbolEach, bool) {
2946	return function(collection, iterator, callback) {
2947	callback = callback \|\| noop;
2948	var size, keys, result;
2949	var completed = 0;
2950
2951	if (isArray(collection)) {
2952	size = collection.length;
2953	result = Array(size);
2954	arrayEach(collection, iterator, createCallback);
2955	} else if (!collection) {
2956	} else if (iteratorSymbol && collection[iteratorSymbol]) {
2957	result = [];
2958	size = symbolEach(collection, iterator, createCallback);
2959	size && size === completed && callback(null, compact(result));
2960	} else if (typeof collection === obj) {
2961	keys = nativeKeys(collection);
2962	size = keys.length;
2963	result = Array(size);
2964	baseEach(collection, iterator, createCallback, keys);
2965	}
2966	if (!size) {
2967	return callback(null, []);
2968	}
2969
2970	function createCallback(index, value) {
2971	return function done(err, res) {
2972	if (index === null) {
2973	throwError();
2974	}
2975	if (err) {
2976	index = null;
2977	callback = once(callback);
2978	callback(err);
2979	return;
2980	}
2981	if (!!res === bool) {
2982	result[index] = value;
2983	}
2984	index = null;
2985	if (++completed === size) {
2986	callback(null, compact(result));
2987	}
2988	};
2989	}
2990	};
2991	}
2992
2993	/**
2994	* @private
2995	* @param {boolean} bool
2996	*/
2997	function createFilterSeries(bool) {
2998	return function(collection, iterator, callback) {
2999	callback = onlyOnce(callback \|\| noop);
3000	var size, key, value, keys, iter, item, iterate;
3001	var sync = false;
3002	var completed = 0;
3003	var result = [];
3004
3005	if (isArray(collection)) {
3006	size = collection.length;
3007	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
3008	} else if (!collection) {
3009	} else if (iteratorSymbol && collection[iteratorSymbol]) {
3010	size = Infinity;
3011	iter = collection[iteratorSymbol]();
3012	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
3013	} else if (typeof collection === obj) {
3014	keys = nativeKeys(collection);
3015	size = keys.length;
3016	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
3017	}
3018	if (!size) {
3019	return callback(null, []);
3020	}
3021	iterate();
3022
3023	function arrayIterator() {
3024	value = collection[completed];
3025	iterator(value, done);
3026	}
3027
3028	function arrayIteratorWithIndex() {
3029	value = collection[completed];
3030	iterator(value, completed, done);
3031	}
3032
3033	function symbolIterator() {
3034	item = iter.next();
3035	value = item.value;
3036	item.done ? callback(null, result) : iterator(value, done);
3037	}
3038
3039	function symbolIteratorWithKey() {
3040	item = iter.next();
3041	value = item.value;
3042	item.done ? callback(null, result) : iterator(value, completed, done);
3043	}
3044
3045	function objectIterator() {
3046	key = keys[completed];
3047	value = collection[key];
3048	iterator(value, done);
3049	}
3050
3051	function objectIteratorWithKey() {
3052	key = keys[completed];
3053	value = collection[key];
3054	iterator(value, key, done);
3055	}
3056
3057	function done(err, res) {
3058	if (err) {
3059	callback(err);
3060	return;
3061	}
3062	if (!!res === bool) {
3063	result[result.length] = value;
3064	}
3065	if (++completed === size) {
3066	iterate = throwError;
3067	callback(null, result);
3068	} else if (sync) {
3069	nextTick(iterate);
3070	} else {
3071	sync = true;
3072	iterate();
3073	}
3074	sync = false;
3075	}
3076	};
3077	}
3078
3079	/**
3080	* @private
3081	* @param {boolean} bool
3082	*/
3083	function createFilterLimit(bool) {
3084	return function(collection, limit, iterator, callback) {
3085	callback = callback \|\| noop;
3086	var size, index, key, value, keys, iter, item, iterate, result;
3087	var sync = false;
3088	var started = 0;
3089	var completed = 0;
3090
3091	if (isArray(collection)) {
3092	size = collection.length;
3093	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
3094	} else if (!collection) {
3095	} else if (iteratorSymbol && collection[iteratorSymbol]) {
3096	size = Infinity;
3097	result = [];
3098	iter = collection[iteratorSymbol]();
3099	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
3100	} else if (typeof collection === obj) {
3101	keys = nativeKeys(collection);
3102	size = keys.length;
3103	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
3104	}
3105	if (!size \|\| isNaN(limit) \|\| limit < 1) {
3106	return callback(null, []);
3107	}
3108	result = result \|\| Array(size);
3109	timesSync(limit > size ? size : limit, iterate);
3110
3111	function arrayIterator() {
3112	index = started++;
3113	if (index < size) {
3114	value = collection[index];
3115	iterator(value, createCallback(value, index));
3116	}
3117	}
3118
3119	function arrayIteratorWithIndex() {
3120	index = started++;
3121	if (index < size) {
3122	value = collection[index];
3123	iterator(value, index, createCallback(value, index));
3124	}
3125	}
3126
3127	function symbolIterator() {
3128	item = iter.next();
3129	if (item.done === false) {
3130	value = item.value;
3131	iterator(value, createCallback(value, started++));
3132	} else if (completed === started && iterator !== noop) {
3133	iterator = noop;
3134	callback(null, compact(result));
3135	}
3136	}
3137
3138	function symbolIteratorWithKey() {
3139	item = iter.next();
3140	if (item.done === false) {
3141	value = item.value;
3142	iterator(value, started, createCallback(value, started++));
3143	} else if (completed === started && iterator !== noop) {
3144	iterator = noop;
3145	callback(null, compact(result));
3146	}
3147	}
3148
3149	function objectIterator() {
3150	index = started++;
3151	if (index < size) {
3152	value = collection[keys[index]];
3153	iterator(value, createCallback(value, index));
3154	}
3155	}
3156
3157	function objectIteratorWithKey() {
3158	index = started++;
3159	if (index < size) {
3160	key = keys[index];
3161	value = collection[key];
3162	iterator(value, key, createCallback(value, index));
3163	}
3164	}
3165
3166	function createCallback(value, index) {
3167	return function(err, res) {
3168	if (index === null) {
3169	throwError();
3170	}
3171	if (err) {
3172	index = null;
3173	iterate = noop;
3174	callback = once(callback);
3175	callback(err);
3176	return;
3177	}
3178	if (!!res === bool) {
3179	result[index] = value;
3180	}
3181	index = null;
3182	if (++completed === size) {
3183	callback = onlyOnce(callback);
3184	callback(null, compact(result));
3185	} else if (sync) {
3186	nextTick(iterate);
3187	} else {
3188	sync = true;
3189	iterate();
3190	}
3191	sync = false;
3192	};
3193	}
3194	};
3195	}
3196
3197	/**
3198	* @memberof async
3199	* @namespace eachSeries
3200	* @param {Array\|Object} collection
3201	* @param {Function} iterator
3202	* @param {Function} callback
3203	* @example
3204	*
3205	* // array
3206	* var order = [];
3207	* var array = [1, 3, 2];
3208	* var iterator = function(num, done) {
3209	* setTimeout(function() {
3210	* order.push(num);
3211	* done();
3212	* }, num * 10);
3213	* };
3214	* async.eachSeries(array, iterator, function(err, res) {
3215	* console.log(res); // undefined
3216	* console.log(order); // [1, 3, 2]
3217	* });
3218	*
3219	* @example
3220	*
3221	* // array with index
3222	* var order = [];
3223	* var array = [1, 3, 2];
3224	* var iterator = function(num, index, done) {
3225	* setTimeout(function() {
3226	* order.push([num, index]);
3227	* done();
3228	* }, num * 10);
3229	* };
3230	* async.eachSeries(array, iterator, function(err, res) {
3231	* console.log(res); // undefined
3232	* console.log(order); // [[1, 0], [3, 1], [2, 2]]
3233	* });
3234	*
3235	* @example
3236	*
3237	* // object
3238	* var order = [];
3239	* var object = { a: 1, b: 3, c: 2 };
3240	* var iterator = function(num, done) {
3241	* setTimeout(function() {
3242	* order.push(num);
3243	* done();
3244	* }, num * 10);
3245	* };
3246	* async.eachSeries(object, iterator, function(err, res) {
3247	* console.log(res); // undefined
3248	* console.log(order); // [1, 3, 2]
3249	* });
3250	*
3251	* @example
3252	*
3253	* // object with key
3254	* var order = [];
3255	* var object = { a: 1, b: 3, c: 2 };
3256	* var iterator = function(num, key, done) {
3257	* setTimeout(function() {
3258	* order.push([num, key]);
3259	* done();
3260	* }, num * 10);
3261	* };
3262	* async.eachSeries(object, iterator, function(err, res) {
3263	* console.log(res); // undefined
3264	* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'b']]
3265	* });
3266	*
3267	* @example
3268	*
3269	* // break
3270	* var order = [];
3271	* var array = [1, 3, 2];
3272	* var iterator = function(num, done) {
3273	* setTimeout(function() {
3274	* order.push(num);
3275	* done(null, num !== 3);
3276	* }, num * 10);
3277	* };
3278	* async.eachSeries(array, iterator, function(err, res) {
3279	* console.log(res); // undefined
3280	* console.log(order); // [1, 3]
3281	* });
3282	*/
3283	function eachSeries(collection, iterator, callback) {
3284	callback = onlyOnce(callback \|\| noop);
3285	var size, key, keys, iter, item, iterate;
3286	var sync = false;
3287	var completed = 0;
3288
3289	if (isArray(collection)) {
3290	size = collection.length;
3291	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
3292	} else if (!collection) {
3293	} else if (iteratorSymbol && collection[iteratorSymbol]) {
3294	size = Infinity;
3295	iter = collection[iteratorSymbol]();
3296	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
3297	} else if (typeof collection === obj) {
3298	keys = nativeKeys(collection);
3299	size = keys.length;
3300	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
3301	}
3302	if (!size) {
3303	return callback(null);
3304	}
3305	iterate();
3306
3307	function arrayIterator() {
3308	iterator(collection[completed], done);
3309	}
3310
3311	function arrayIteratorWithIndex() {
3312	iterator(collection[completed], completed, done);
3313	}
3314
3315	function symbolIterator() {
3316	item = iter.next();
3317	item.done ? callback(null) : iterator(item.value, done);
3318	}
3319
3320	function symbolIteratorWithKey() {
3321	item = iter.next();
3322	item.done ? callback(null) : iterator(item.value, completed, done);
3323	}
3324
3325	function objectIterator() {
3326	iterator(collection[keys[completed]], done);
3327	}
3328
3329	function objectIteratorWithKey() {
3330	key = keys[completed];
3331	iterator(collection[key], key, done);
3332	}
3333
3334	function done(err, bool) {
3335	if (err) {
3336	callback(err);
3337	} else if (++completed === size \|\| bool === false) {
3338	iterate = throwError;
3339	callback(null);
3340	} else if (sync) {
3341	nextTick(iterate);
3342	} else {
3343	sync = true;
3344	iterate();
3345	}
3346	sync = false;
3347	}
3348	}
3349
3350	/**
3351	* @memberof async
3352	* @namespace eachLimit
3353	* @param {Array\|Object} collection
3354	* @param {number} limit - limit >= 1
3355	* @param {Function} iterator
3356	* @param {Function} callback
3357	* @example
3358	*
3359	* // array
3360	* var order = [];
3361	* var array = [1, 5, 3, 4, 2];
3362	* var iterator = function(num, done) {
3363	* setTimeout(function() {
3364	* order.push(num);
3365	* done();
3366	* }, num * 10);
3367	* };
3368	* async.eachLimit(array, 2, iterator, function(err, res) {
3369	* console.log(res); // undefined
3370	* console.log(order); // [1, 3, 5, 2, 4]
3371	* });
3372	*
3373	* @example
3374	*
3375	* // array with index
3376	* var order = [];
3377	* var array = [1, 5, 3, 4, 2];
3378	* var iterator = function(num, index, done) {
3379	* setTimeout(function() {
3380	* order.push([num, index]);
3381	* done();
3382	* }, num * 10);
3383	* };
3384	* async.eachLimit(array, 2, iterator, function(err, res) {
3385	* console.log(res); // undefined
3386	* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
3387	* });
3388	*
3389	* @example
3390	*
3391	* // object
3392	* var order = [];
3393	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
3394	* var iterator = function(num, done) {
3395	* setTimeout(function() {
3396	* order.push(num);
3397	* done();
3398	* }, num * 10);
3399	* };
3400	* async.eachLimit(object, 2, iterator, function(err, res) {
3401	* console.log(res); // undefined
3402	* console.log(order); // [1, 3, 5, 2, 4]
3403	* });
3404	*
3405	* @example
3406	*
3407	* // object with key
3408	* var order = [];
3409	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
3410	* var iterator = function(num, key, done) {
3411	* setTimeout(function() {
3412	* order.push([num, key]);
3413	* done();
3414	* }, num * 10);
3415	* };
3416	* async.eachLimit(object, 2, iterator, function(err, res) {
3417	* console.log(res); // undefined
3418	* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
3419	* });
3420	*
3421	* @example
3422	*
3423	* // break
3424	* var order = [];
3425	* var array = [1, 5, 3, 4, 2];
3426	* var iterator = function(num, done) {
3427	* setTimeout(function() {
3428	* order.push(num);
3429	* done(null, num !== 5);
3430	* }, num * 10);
3431	* };
3432	* async.eachLimit(array, 2, iterator, function(err, res) {
3433	* console.log(res); // undefined
3434	* console.log(order); // [1, 3, 5]
3435	* });
3436	*
3437	*/
3438	function eachLimit(collection, limit, iterator, callback) {
3439	callback = callback \|\| noop;
3440	var size, index, key, keys, iter, item, iterate;
3441	var sync = false;
3442	var started = 0;
3443	var completed = 0;
3444
3445	if (isArray(collection)) {
3446	size = collection.length;
3447	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
3448	} else if (!collection) {
3449	} else if (iteratorSymbol && collection[iteratorSymbol]) {
3450	size = Infinity;
3451	iter = collection[iteratorSymbol]();
3452	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
3453	} else if (typeof collection === obj) {
3454	keys = nativeKeys(collection);
3455	size = keys.length;
3456	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
3457	} else {
3458	return callback(null);
3459	}
3460	if (!size \|\| isNaN(limit) \|\| limit < 1) {
3461	return callback(null);
3462	}
3463	timesSync(limit > size ? size : limit, iterate);
3464
3465	function arrayIterator() {
3466	if (started < size) {
3467	iterator(collection[started++], done);
3468	}
3469	}
3470
3471	function arrayIteratorWithIndex() {
3472	index = started++;
3473	if (index < size) {
3474	iterator(collection[index], index, done);
3475	}
3476	}
3477
3478	function symbolIterator() {
3479	item = iter.next();
3480	if (item.done === false) {
3481	started++;
3482	iterator(item.value, done);
3483	} else if (completed === started && iterator !== noop) {
3484	iterator = noop;
3485	callback(null);
3486	}
3487	}
3488
3489	function symbolIteratorWithKey() {
3490	item = iter.next();
3491	if (item.done === false) {
3492	iterator(item.value, started++, done);
3493	} else if (completed === started && iterator !== noop) {
3494	iterator = noop;
3495	callback(null);
3496	}
3497	}
3498
3499	function objectIterator() {
3500	if (started < size) {
3501	iterator(collection[keys[started++]], done);
3502	}
3503	}
3504
3505	function objectIteratorWithKey() {
3506	index = started++;
3507	if (index < size) {
3508	key = keys[index];
3509	iterator(collection[key], key, done);
3510	}
3511	}
3512
3513	function done(err, bool) {
3514	if (err \|\| bool === false) {
3515	iterate = noop;
3516	callback = once(callback);
3517	callback(err);
3518	} else if (++completed === size) {
3519	iterator = noop;
3520	iterate = throwError;
3521	callback = onlyOnce(callback);
3522	callback(null);
3523	} else if (sync) {
3524	nextTick(iterate);
3525	} else {
3526	sync = true;
3527	iterate();
3528	}
3529	sync = false;
3530	}
3531	}
3532
3533	/**
3534	* @memberof async
3535	* @namespace mapSeries
3536	* @param {Array\|Object} collection
3537	* @param {Function} iterator
3538	* @param {Function} callback
3539	* @example
3540	*
3541	* // array
3542	* var order = [];
3543	* var array = [1, 3, 2];
3544	* var iterator = function(num, done) {
3545	* setTimeout(function() {
3546	* order.push(num);
3547	* done(null, num);
3548	* }, num * 10);
3549	* };
3550	* async.mapSeries(array, iterator, function(err, res) {
3551	* console.log(res); // [1, 3, 2];
3552	* console.log(order); // [1, 3, 2]
3553	* });
3554	*
3555	* @example
3556	*
3557	* // array with index
3558	* var order = [];
3559	* var array = [1, 3, 2];
3560	* var iterator = function(num, index, done) {
3561	* setTimeout(function() {
3562	* order.push([num, index]);
3563	* done(null, num);
3564	* }, num * 10);
3565	* };
3566	* async.mapSeries(array, iterator, function(err, res) {
3567	* console.log(res); // [1, 3, 2]
3568	* console.log(order); // [[1, 0], [3, 1], [2, 2]]
3569	* });
3570	*
3571	* @example
3572	*
3573	* // object
3574	* var order = [];
3575	* var object = { a: 1, b: 3, c: 2 };
3576	* var iterator = function(num, done) {
3577	* setTimeout(function() {
3578	* order.push(num);
3579	* done(null, num);
3580	* }, num * 10);
3581	* };
3582	* async.mapSeries(object, iterator, function(err, res) {
3583	* console.log(res); // [1, 3, 2]
3584	* console.log(order); // [1, 3, 2]
3585	* });
3586	*
3587	* @example
3588	*
3589	* // object with key
3590	* var order = [];
3591	* var object = { a: 1, b: 3, c: 2 };
3592	* var iterator = function(num, key, done) {
3593	* setTimeout(function() {
3594	* order.push([num, key]);
3595	* done(null, num);
3596	* }, num * 10);
3597	* };
3598	* async.mapSeries(object, iterator, function(err, res) {
3599	* console.log(res); // [1, 3, 2]
3600	* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'c']]
3601	* });
3602	*
3603	*/
3604	function mapSeries(collection, iterator, callback) {
3605	callback = callback \|\| noop;
3606	var size, key, keys, iter, item, result, iterate;
3607	var sync = false;
3608	var completed = 0;
3609
3610	if (isArray(collection)) {
3611	size = collection.length;
3612	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
3613	} else if (!collection) {
3614	} else if (iteratorSymbol && collection[iteratorSymbol]) {
3615	size = Infinity;
3616	result = [];
3617	iter = collection[iteratorSymbol]();
3618	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
3619	} else if (typeof collection === obj) {
3620	keys = nativeKeys(collection);
3621	size = keys.length;
3622	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
3623	}
3624	if (!size) {
3625	return callback(null, []);
3626	}
3627	result = result \|\| Array(size);
3628	iterate();
3629
3630	function arrayIterator() {
3631	iterator(collection[completed], done);
3632	}
3633
3634	function arrayIteratorWithIndex() {
3635	iterator(collection[completed], completed, done);
3636	}
3637
3638	function symbolIterator() {
3639	item = iter.next();
3640	item.done ? callback(null, result) : iterator(item.value, done);
3641	}
3642
3643	function symbolIteratorWithKey() {
3644	item = iter.next();
3645	item.done ? callback(null, result) : iterator(item.value, completed, done);
3646	}
3647
3648	function objectIterator() {
3649	iterator(collection[keys[completed]], done);
3650	}
3651
3652	function objectIteratorWithKey() {
3653	key = keys[completed];
3654	iterator(collection[key], key, done);
3655	}
3656
3657	function done(err, res) {
3658	if (err) {
3659	iterate = throwError;
3660	callback = onlyOnce(callback);
3661	callback(err, createArray(result));
3662	return;
3663	}
3664	result[completed] = res;
3665	if (++completed === size) {
3666	iterate = throwError;
3667	callback(null, result);
3668	callback = throwError;
3669	} else if (sync) {
3670	nextTick(iterate);
3671	} else {
3672	sync = true;
3673	iterate();
3674	}
3675	sync = false;
3676	}
3677	}
3678
3679	/**
3680	* @memberof async
3681	* @namespace mapLimit
3682	* @param {Array\|Object} collection
3683	* @param {number} limit - limit >= 1
3684	* @param {Function} iterator
3685	* @param {Function} callback
3686	* @example
3687	*
3688	* // array
3689	* var order = [];
3690	* var array = [1, 5, 3, 4, 2];
3691	* var iterator = function(num, done) {
3692	* setTimeout(function() {
3693	* order.push(num);
3694	* done(null, num);
3695	* }, num * 10);
3696	* };
3697	* async.mapLimit(array, 2, iterator, function(err, res) {
3698	* console.log(res); // [1, 5, 3, 4, 2]
3699	* console.log(order); // [1, 3, 5, 2, 4]
3700	* });
3701	*
3702	* @example
3703	*
3704	* // array with index
3705	* var order = [];
3706	* var array = [1, 5, 3, 4, 2];
3707	* var iterator = function(num, index, done) {
3708	* setTimeout(function() {
3709	* order.push([num, index]);
3710	* done(null, num);
3711	* }, num * 10);
3712	* };
3713	* async.mapLimit(array, 2, iterator, function(err, res) {
3714	* console.log(res); // [1, 5, 3, 4, 2]
3715	* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
3716	* });
3717	*
3718	* @example
3719	*
3720	* // object
3721	* var order = [];
3722	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
3723	* var iterator = function(num, done) {
3724	* setTimeout(function() {
3725	* order.push(num);
3726	* done(null, num);
3727	* }, num * 10);
3728	* };
3729	* async.mapLimit(object, 2, iterator, function(err, res) {
3730	* console.log(res); // [1, 5, 3, 4, 2]
3731	* console.log(order); // [1, 3, 5, 2, 4]
3732	* });
3733	*
3734	* @example
3735	*
3736	* // object with key
3737	* var order = [];
3738	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
3739	* var iterator = function(num, key, done) {
3740	* setTimeout(function() {
3741	* order.push([num, key]);
3742	* done(null, num);
3743	* }, num * 10);
3744	* };
3745	* async.mapLimit(object, 2, iterator, function(err, res) {
3746	* console.log(res); // [1, 5, 3, 4, 2]
3747	* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
3748	* });
3749	*
3750	*/
3751	function mapLimit(collection, limit, iterator, callback) {
3752	callback = callback \|\| noop;
3753	var size, index, key, keys, iter, item, result, iterate;
3754	var sync = false;
3755	var started = 0;
3756	var completed = 0;
3757
3758	if (isArray(collection)) {
3759	size = collection.length;
3760	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
3761	} else if (!collection) {
3762	} else if (iteratorSymbol && collection[iteratorSymbol]) {
3763	size = Infinity;
3764	result = [];
3765	iter = collection[iteratorSymbol]();
3766	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
3767	} else if (typeof collection === obj) {
3768	keys = nativeKeys(collection);
3769	size = keys.length;
3770	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
3771	}
3772	if (!size \|\| isNaN(limit) \|\| limit < 1) {
3773	return callback(null, []);
3774	}
3775	result = result \|\| Array(size);
3776	timesSync(limit > size ? size : limit, iterate);
3777
3778	function arrayIterator() {
3779	index = started++;
3780	if (index < size) {
3781	iterator(collection[index], createCallback(index));
3782	}
3783	}
3784
3785	function arrayIteratorWithIndex() {
3786	index = started++;
3787	if (index < size) {
3788	iterator(collection[index], index, createCallback(index));
3789	}
3790	}
3791
3792	function symbolIterator() {
3793	item = iter.next();
3794	if (item.done === false) {
3795	iterator(item.value, createCallback(started++));
3796	} else if (completed === started && iterator !== noop) {
3797	iterator = noop;
3798	callback(null, result);
3799	}
3800	}
3801
3802	function symbolIteratorWithKey() {
3803	item = iter.next();
3804	if (item.done === false) {
3805	iterator(item.value, started, createCallback(started++));
3806	} else if (completed === started && iterator !== noop) {
3807	iterator = noop;
3808	callback(null, result);
3809	}
3810	}
3811
3812	function objectIterator() {
3813	index = started++;
3814	if (index < size) {
3815	iterator(collection[keys[index]], createCallback(index));
3816	}
3817	}
3818
3819	function objectIteratorWithKey() {
3820	index = started++;
3821	if (index < size) {
3822	key = keys[index];
3823	iterator(collection[key], key, createCallback(index));
3824	}
3825	}
3826
3827	function createCallback(index) {
3828	return function(err, res) {
3829	if (index === null) {
3830	throwError();
3831	}
3832	if (err) {
3833	index = null;
3834	iterate = noop;
3835	callback = once(callback);
3836	callback(err, createArray(result));
3837	return;
3838	}
3839	result[index] = res;
3840	index = null;
3841	if (++completed === size) {
3842	iterate = throwError;
3843	callback(null, result);
3844	callback = throwError;
3845	} else if (sync) {
3846	nextTick(iterate);
3847	} else {
3848	sync = true;
3849	iterate();
3850	}
3851	sync = false;
3852	};
3853	}
3854	}
3855
3856	/**
3857	* @memberof async
3858	* @namespace mapValuesSeries
3859	* @param {Array\|Object} collection
3860	* @param {Function} iterator
3861	* @param {Function} callback
3862	* @example
3863	*
3864	* // array
3865	* var order = [];
3866	* var array = [1, 3, 2];
3867	* var iterator = function(num, done) {
3868	* setTimeout(function() {
3869	* order.push(num);
3870	* done(null, num);
3871	* }, num * 10);
3872	* };
3873	* async.mapValuesSeries(array, iterator, function(err, res) {
3874	* console.log(res); // { '0': 1, '1': 3, '2': 2 }
3875	* console.log(order); // [1, 3, 2]
3876	* });
3877	*
3878	* @example
3879	*
3880	* // array with index
3881	* var order = [];
3882	* var array = [1, 3, 2];
3883	* var iterator = function(num, index, done) {
3884	* setTimeout(function() {
3885	* order.push([num, index]);
3886	* done(null, num);
3887	* }, num * 10);
3888	* };
3889	* async.mapValuesSeries(array, iterator, function(err, res) {
3890	* console.log(res); // { '0': 1, '1': 3, '2': 2 }
3891	* console.log(order); // [[1, 0], [3, 1], [2, 2]]
3892	* });
3893	*
3894	* @example
3895	*
3896	* // object
3897	* var order = [];
3898	* var object = { a: 1, b: 3, c: 2 };
3899	* var iterator = function(num, done) {
3900	* setTimeout(function() {
3901	* order.push(num);
3902	* done(null, num);
3903	* }, num * 10);
3904	* };
3905	* async.mapValuesSeries(object, iterator, function(err, res) {
3906	* console.log(res); // { a: 1, b: 3, c: 2 }
3907	* console.log(order); // [1, 3, 2]
3908	* });
3909	*
3910	* @example
3911	*
3912	* // object with key
3913	* var order = [];
3914	* var object = { a: 1, b: 3, c: 2 };
3915	* var iterator = function(num, key, done) {
3916	* setTimeout(function() {
3917	* order.push([num, key]);
3918	* done(null, num);
3919	* }, num * 10);
3920	* };
3921	* async.mapValuesSeries(object, iterator, function(err, res) {
3922	* console.log(res); // { a: 1, b: 3, c: 2 }
3923	* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'c']]
3924	* });
3925	*
3926	*/
3927	function mapValuesSeries(collection, iterator, callback) {
3928	callback = callback \|\| noop;
3929	var size, key, keys, iter, item, iterate;
3930	var sync = false;
3931	var result = {};
3932	var completed = 0;
3933
3934	if (isArray(collection)) {
3935	size = collection.length;
3936	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
3937	} else if (!collection) {
3938	} else if (iteratorSymbol && collection[iteratorSymbol]) {
3939	size = Infinity;
3940	iter = collection[iteratorSymbol]();
3941	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
3942	} else if (typeof collection === obj) {
3943	keys = nativeKeys(collection);
3944	size = keys.length;
3945	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
3946	}
3947	if (!size) {
3948	return callback(null, result);
3949	}
3950	iterate();
3951
3952	function arrayIterator() {
3953	key = completed;
3954	iterator(collection[completed], done);
3955	}
3956
3957	function arrayIteratorWithIndex() {
3958	key = completed;
3959	iterator(collection[completed], completed, done);
3960	}
3961
3962	function symbolIterator() {
3963	key = completed;
3964	item = iter.next();
3965	item.done ? callback(null, result) : iterator(item.value, done);
3966	}
3967
3968	function symbolIteratorWithKey() {
3969	key = completed;
3970	item = iter.next();
3971	item.done ? callback(null, result) : iterator(item.value, completed, done);
3972	}
3973
3974	function objectIterator() {
3975	key = keys[completed];
3976	iterator(collection[key], done);
3977	}
3978
3979	function objectIteratorWithKey() {
3980	key = keys[completed];
3981	iterator(collection[key], key, done);
3982	}
3983
3984	function done(err, res) {
3985	if (err) {
3986	iterate = throwError;
3987	callback = onlyOnce(callback);
3988	callback(err, objectClone(result));
3989	return;
3990	}
3991	result[key] = res;
3992	if (++completed === size) {
3993	iterate = throwError;
3994	callback(null, result);
3995	callback = throwError;
3996	} else if (sync) {
3997	nextTick(iterate);
3998	} else {
3999	sync = true;
4000	iterate();
4001	}
4002	sync = false;
4003	}
4004	}
4005
4006	/**
4007	* @memberof async
4008	* @namespace mapValuesLimit
4009	* @param {Array\|Object} collection
4010	* @param {number} limit - limit >= 1
4011	* @param {Function} iterator
4012	* @param {Function} callback
4013	* @example
4014	*
4015	* // array
4016	* var order = [];
4017	* var array = [1, 5, 3, 4, 2];
4018	* var iterator = function(num, done) {
4019	* setTimeout(function() {
4020	* order.push(num);
4021	* done(null, num);
4022	* }, num * 10);
4023	* };
4024	* async.mapValuesLimit(array, 2, iterator, function(err, res) {
4025	* console.log(res); // { '0': 1, '1': 5, '2': 3, '3': 4, '4': 2 }
4026	* console.log(order); // [1, 3, 5, 2, 4]
4027	* });
4028	*
4029	* @example
4030	*
4031	* // array with index
4032	* var order = [];
4033	* var array = [1, 5, 3, 4, 2];
4034	* var iterator = function(num, index, done) {
4035	* setTimeout(function() {
4036	* order.push([num, index]);
4037	* done(null, num);
4038	* }, num * 10);
4039	* };
4040	* async.mapValuesLimit(array, 2, iterator, function(err, res) {
4041	* console.log(res); // { '0': 1, '1': 5, '2': 3, '3': 4, '4': 2 }
4042	* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
4043	* });
4044	*
4045	* @example
4046	*
4047	* // object
4048	* var order = [];
4049	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
4050	* var iterator = function(num, done) {
4051	* setTimeout(function() {
4052	* order.push(num);
4053	* done(null, num);
4054	* }, num * 10);
4055	* };
4056	* async.mapValuesLimit(object, 2, iterator, function(err, res) {
4057	* console.log(res); // { a: 1, b: 5, c: 3, d: 4, e: 2 }
4058	* console.log(order); // [1, 3, 5, 2, 4]
4059	* });
4060	*
4061	* @example
4062	*
4063	* // object with key
4064	* var order = [];
4065	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
4066	* var iterator = function(num, key, done) {
4067	* setTimeout(function() {
4068	* order.push([num, key]);
4069	* done(null, num);
4070	* }, num * 10);
4071	* };
4072	* async.mapValuesLimit(object, 2, iterator, function(err, res) {
4073	* console.log(res); // { a: 1, b: 5, c: 3, d: 4, e: 2 }
4074	* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
4075	* });
4076	*
4077	*/
4078	function mapValuesLimit(collection, limit, iterator, callback) {
4079	callback = callback \|\| noop;
4080	var size, index, key, keys, iter, item, iterate;
4081	var sync = false;
4082	var result = {};
4083	var started = 0;
4084	var completed = 0;
4085
4086	if (isArray(collection)) {
4087	size = collection.length;
4088	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
4089	} else if (!collection) {
4090	} else if (iteratorSymbol && collection[iteratorSymbol]) {
4091	size = Infinity;
4092	iter = collection[iteratorSymbol]();
4093	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
4094	} else if (typeof collection === obj) {
4095	keys = nativeKeys(collection);
4096	size = keys.length;
4097	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
4098	}
4099	if (!size \|\| isNaN(limit) \|\| limit < 1) {
4100	return callback(null, result);
4101	}
4102	timesSync(limit > size ? size : limit, iterate);
4103
4104	function arrayIterator() {
4105	index = started++;
4106	if (index < size) {
4107	iterator(collection[index], createCallback(index));
4108	}
4109	}
4110
4111	function arrayIteratorWithIndex() {
4112	index = started++;
4113	if (index < size) {
4114	iterator(collection[index], index, createCallback(index));
4115	}
4116	}
4117
4118	function symbolIterator() {
4119	item = iter.next();
4120	if (item.done === false) {
4121	iterator(item.value, createCallback(started++));
4122	} else if (completed === started && iterator !== noop) {
4123	iterator = noop;
4124	callback(null, result);
4125	}
4126	}
4127
4128	function symbolIteratorWithKey() {
4129	item = iter.next();
4130	if (item.done === false) {
4131	iterator(item.value, started, createCallback(started++));
4132	} else if (completed === started && iterator !== noop) {
4133	iterator = noop;
4134	callback(null, result);
4135	}
4136	}
4137
4138	function objectIterator() {
4139	index = started++;
4140	if (index < size) {
4141	key = keys[index];
4142	iterator(collection[key], createCallback(key));
4143	}
4144	}
4145
4146	function objectIteratorWithKey() {
4147	index = started++;
4148	if (index < size) {
4149	key = keys[index];
4150	iterator(collection[key], key, createCallback(key));
4151	}
4152	}
4153
4154	function createCallback(key) {
4155	return function(err, res) {
4156	if (key === null) {
4157	throwError();
4158	}
4159	if (err) {
4160	key = null;
4161	iterate = noop;
4162	callback = once(callback);
4163	callback(err, objectClone(result));
4164	return;
4165	}
4166	result[key] = res;
4167	key = null;
4168	if (++completed === size) {
4169	callback(null, result);
4170	} else if (sync) {
4171	nextTick(iterate);
4172	} else {
4173	sync = true;
4174	iterate();
4175	}
4176	sync = false;
4177	};
4178	}
4179	}
4180
4181	/**
4182	* @private
4183	* @param {Function} arrayEach
4184	* @param {Function} baseEach
4185	* @param {Function} symbolEach
4186	* @param {boolean} bool
4187	*/
4188	function createDetect(arrayEach, baseEach, symbolEach, bool) {
4189	return function(collection, iterator, callback) {
4190	callback = callback \|\| noop;
4191	var size, keys;
4192	var completed = 0;
4193
4194	if (isArray(collection)) {
4195	size = collection.length;
4196	arrayEach(collection, iterator, createCallback);
4197	} else if (!collection) {
4198	} else if (iteratorSymbol && collection[iteratorSymbol]) {
4199	size = symbolEach(collection, iterator, createCallback);
4200	size && size === completed && callback(null);
4201	} else if (typeof collection === obj) {
4202	keys = nativeKeys(collection);
4203	size = keys.length;
4204	baseEach(collection, iterator, createCallback, keys);
4205	}
4206	if (!size) {
4207	callback(null);
4208	}
4209
4210	function createCallback(value) {
4211	var called = false;
4212	return function done(err, res) {
4213	if (called) {
4214	throwError();
4215	}
4216	called = true;
4217	if (err) {
4218	callback = once(callback);
4219	callback(err);
4220	} else if (!!res === bool) {
4221	callback = once(callback);
4222	callback(null, value);
4223	} else if (++completed === size) {
4224	callback(null);
4225	}
4226	};
4227	}
4228	};
4229	}
4230
4231	/**
4232	* @private
4233	* @param {boolean} bool
4234	*/
4235	function createDetectSeries(bool) {
4236	return function(collection, iterator, callback) {
4237	callback = onlyOnce(callback \|\| noop);
4238	var size, key, value, keys, iter, item, iterate;
4239	var sync = false;
4240	var completed = 0;
4241
4242	if (isArray(collection)) {
4243	size = collection.length;
4244	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
4245	} else if (!collection) {
4246	} else if (iteratorSymbol && collection[iteratorSymbol]) {
4247	size = Infinity;
4248	iter = collection[iteratorSymbol]();
4249	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
4250	} else if (typeof collection === obj) {
4251	keys = nativeKeys(collection);
4252	size = keys.length;
4253	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
4254	}
4255	if (!size) {
4256	return callback(null);
4257	}
4258	iterate();
4259
4260	function arrayIterator() {
4261	value = collection[completed];
4262	iterator(value, done);
4263	}
4264
4265	function arrayIteratorWithIndex() {
4266	value = collection[completed];
4267	iterator(value, completed, done);
4268	}
4269
4270	function symbolIterator() {
4271	item = iter.next();
4272	value = item.value;
4273	item.done ? callback(null) : iterator(value, done);
4274	}
4275
4276	function symbolIteratorWithKey() {
4277	item = iter.next();
4278	value = item.value;
4279	item.done ? callback(null) : iterator(value, completed, done);
4280	}
4281
4282	function objectIterator() {
4283	value = collection[keys[completed]];
4284	iterator(value, done);
4285	}
4286
4287	function objectIteratorWithKey() {
4288	key = keys[completed];
4289	value = collection[key];
4290	iterator(value, key, done);
4291	}
4292
4293	function done(err, res) {
4294	if (err) {
4295	callback(err);
4296	} else if (!!res === bool) {
4297	iterate = throwError;
4298	callback(null, value);
4299	} else if (++completed === size) {
4300	iterate = throwError;
4301	callback(null);
4302	} else if (sync) {
4303	nextTick(iterate);
4304	} else {
4305	sync = true;
4306	iterate();
4307	}
4308	sync = false;
4309	}
4310	};
4311	}
4312
4313	/**
4314	* @private
4315	* @param {boolean} bool
4316	*/
4317	function createDetectLimit(bool) {
4318	return function(collection, limit, iterator, callback) {
4319	callback = callback \|\| noop;
4320	var size, index, key, value, keys, iter, item, iterate;
4321	var sync = false;
4322	var started = 0;
4323	var completed = 0;
4324
4325	if (isArray(collection)) {
4326	size = collection.length;
4327	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
4328	} else if (!collection) {
4329	} else if (iteratorSymbol && collection[iteratorSymbol]) {
4330	size = Infinity;
4331	iter = collection[iteratorSymbol]();
4332	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
4333	} else if (typeof collection === obj) {
4334	keys = nativeKeys(collection);
4335	size = keys.length;
4336	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
4337	}
4338	if (!size \|\| isNaN(limit) \|\| limit < 1) {
4339	return callback(null);
4340	}
4341	timesSync(limit > size ? size : limit, iterate);
4342
4343	function arrayIterator() {
4344	index = started++;
4345	if (index < size) {
4346	value = collection[index];
4347	iterator(value, createCallback(value));
4348	}
4349	}
4350
4351	function arrayIteratorWithIndex() {
4352	index = started++;
4353	if (index < size) {
4354	value = collection[index];
4355	iterator(value, index, createCallback(value));
4356	}
4357	}
4358
4359	function symbolIterator() {
4360	item = iter.next();
4361	if (item.done === false) {
4362	started++;
4363	value = item.value;
4364	iterator(value, createCallback(value));
4365	} else if (completed === started && iterator !== noop) {
4366	iterator = noop;
4367	callback(null);
4368	}
4369	}
4370
4371	function symbolIteratorWithKey() {
4372	item = iter.next();
4373	if (item.done === false) {
4374	value = item.value;
4375	iterator(value, started++, createCallback(value));
4376	} else if (completed === started && iterator !== noop) {
4377	iterator = noop;
4378	callback(null);
4379	}
4380	}
4381
4382	function objectIterator() {
4383	index = started++;
4384	if (index < size) {
4385	value = collection[keys[index]];
4386	iterator(value, createCallback(value));
4387	}
4388	}
4389
4390	function objectIteratorWithKey() {
4391	if (started < size) {
4392	key = keys[started++];
4393	value = collection[key];
4394	iterator(value, key, createCallback(value));
4395	}
4396	}
4397
4398	function createCallback(value) {
4399	var called = false;
4400	return function(err, res) {
4401	if (called) {
4402	throwError();
4403	}
4404	called = true;
4405	if (err) {
4406	iterate = noop;
4407	callback = once(callback);
4408	callback(err);
4409	} else if (!!res === bool) {
4410	iterate = noop;
4411	callback = once(callback);
4412	callback(null, value);
4413	} else if (++completed === size) {
4414	callback(null);
4415	} else if (sync) {
4416	nextTick(iterate);
4417	} else {
4418	sync = true;
4419	iterate();
4420	}
4421	sync = false;
4422	};
4423	}
4424	};
4425	}
4426
4427	/**
4428	* @private
4429	* @param {Function} arrayEach
4430	* @param {Function} baseEach
4431	* @param {Function} symbolEach
4432	* @param {boolean} bool
4433	*/
4434	function createPick(arrayEach, baseEach, symbolEach, bool) {
4435	return function(collection, iterator, callback) {
4436	callback = callback \|\| noop;
4437	var size, keys;
4438	var completed = 0;
4439	var result = {};
4440
4441	if (isArray(collection)) {
4442	size = collection.length;
4443	arrayEach(collection, iterator, createCallback);
4444	} else if (!collection) {
4445	} else if (iteratorSymbol && collection[iteratorSymbol]) {
4446	size = symbolEach(collection, iterator, createCallback);
4447	size && size === completed && callback(null, result);
4448	} else if (typeof collection === obj) {
4449	keys = nativeKeys(collection);
4450	size = keys.length;
4451	baseEach(collection, iterator, createCallback, keys);
4452	}
4453	if (!size) {
4454	return callback(null, {});
4455	}
4456
4457	function createCallback(key, value) {
4458	return function done(err, res) {
4459	if (key === null) {
4460	throwError();
4461	}
4462	if (err) {
4463	key = null;
4464	callback = once(callback);
4465	callback(err, objectClone(result));
4466	return;
4467	}
4468	if (!!res === bool) {
4469	result[key] = value;
4470	}
4471	key = null;
4472	if (++completed === size) {
4473	callback(null, result);
4474	}
4475	};
4476	}
4477	};
4478	}
4479
4480	/**
4481	* @private
4482	* @param {boolean} bool
4483	*/
4484	function createPickSeries(bool) {
4485	return function(collection, iterator, callback) {
4486	callback = onlyOnce(callback \|\| noop);
4487	var size, key, value, keys, iter, item, iterate;
4488	var sync = false;
4489	var result = {};
4490	var completed = 0;
4491
4492	if (isArray(collection)) {
4493	size = collection.length;
4494	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
4495	} else if (!collection) {
4496	} else if (iteratorSymbol && collection[iteratorSymbol]) {
4497	size = Infinity;
4498	iter = collection[iteratorSymbol]();
4499	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
4500	} else if (typeof collection === obj) {
4501	keys = nativeKeys(collection);
4502	size = keys.length;
4503	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
4504	}
4505	if (!size) {
4506	return callback(null, {});
4507	}
4508	iterate();
4509
4510	function arrayIterator() {
4511	key = completed;
4512	value = collection[completed];
4513	iterator(value, done);
4514	}
4515
4516	function arrayIteratorWithIndex() {
4517	key = completed;
4518	value = collection[completed];
4519	iterator(value, completed, done);
4520	}
4521
4522	function symbolIterator() {
4523	key = completed;
4524	item = iter.next();
4525	value = item.value;
4526	item.done ? callback(null, result) : iterator(value, done);
4527	}
4528
4529	function symbolIteratorWithKey() {
4530	key = completed;
4531	item = iter.next();
4532	value = item.value;
4533	item.done ? callback(null, result) : iterator(value, key, done);
4534	}
4535
4536	function objectIterator() {
4537	key = keys[completed];
4538	value = collection[key];
4539	iterator(value, done);
4540	}
4541
4542	function objectIteratorWithKey() {
4543	key = keys[completed];
4544	value = collection[key];
4545	iterator(value, key, done);
4546	}
4547
4548	function done(err, res) {
4549	if (err) {
4550	callback(err, result);
4551	return;
4552	}
4553	if (!!res === bool) {
4554	result[key] = value;
4555	}
4556	if (++completed === size) {
4557	iterate = throwError;
4558	callback(null, result);
4559	} else if (sync) {
4560	nextTick(iterate);
4561	} else {
4562	sync = true;
4563	iterate();
4564	}
4565	sync = false;
4566	}
4567	};
4568	}
4569
4570	/**
4571	* @private
4572	* @param {boolean} bool
4573	*/
4574	function createPickLimit(bool) {
4575	return function(collection, limit, iterator, callback) {
4576	callback = callback \|\| noop;
4577	var size, index, key, value, keys, iter, item, iterate;
4578	var sync = false;
4579	var result = {};
4580	var started = 0;
4581	var completed = 0;
4582
4583	if (isArray(collection)) {
4584	size = collection.length;
4585	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
4586	} else if (!collection) {
4587	} else if (iteratorSymbol && collection[iteratorSymbol]) {
4588	size = Infinity;
4589	iter = collection[iteratorSymbol]();
4590	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
4591	} else if (typeof collection === obj) {
4592	keys = nativeKeys(collection);
4593	size = keys.length;
4594	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
4595	}
4596	if (!size \|\| isNaN(limit) \|\| limit < 1) {
4597	return callback(null, {});
4598	}
4599	timesSync(limit > size ? size : limit, iterate);
4600
4601	function arrayIterator() {
4602	index = started++;
4603	if (index < size) {
4604	value = collection[index];
4605	iterator(value, createCallback(value, index));
4606	}
4607	}
4608
4609	function arrayIteratorWithIndex() {
4610	index = started++;
4611	if (index < size) {
4612	value = collection[index];
4613	iterator(value, index, createCallback(value, index));
4614	}
4615	}
4616
4617	function symbolIterator() {
4618	item = iter.next();
4619	if (item.done === false) {
4620	value = item.value;
4621	iterator(value, createCallback(value, started++));
4622	} else if (completed === started && iterator !== noop) {
4623	iterator = noop;
4624	callback(null, result);
4625	}
4626	}
4627
4628	function symbolIteratorWithKey() {
4629	item = iter.next();
4630	if (item.done === false) {
4631	value = item.value;
4632	iterator(value, started, createCallback(value, started++));
4633	} else if (completed === started && iterator !== noop) {
4634	iterator = noop;
4635	callback(null, result);
4636	}
4637	}
4638
4639	function objectIterator() {
4640	if (started < size) {
4641	key = keys[started++];
4642	value = collection[key];
4643	iterator(value, createCallback(value, key));
4644	}
4645	}
4646
4647	function objectIteratorWithKey() {
4648	if (started < size) {
4649	key = keys[started++];
4650	value = collection[key];
4651	iterator(value, key, createCallback(value, key));
4652	}
4653	}
4654
4655	function createCallback(value, key) {
4656	return function(err, res) {
4657	if (key === null) {
4658	throwError();
4659	}
4660	if (err) {
4661	key = null;
4662	iterate = noop;
4663	callback = once(callback);
4664	callback(err, objectClone(result));
4665	return;
4666	}
4667	if (!!res === bool) {
4668	result[key] = value;
4669	}
4670	key = null;
4671	if (++completed === size) {
4672	iterate = throwError;
4673	callback = onlyOnce(callback);
4674	callback(null, result);
4675	} else if (sync) {
4676	nextTick(iterate);
4677	} else {
4678	sync = true;
4679	iterate();
4680	}
4681	sync = false;
4682	};
4683	}
4684	};
4685	}
4686
4687	/**
4688	* @memberof async
4689	* @namespace reduce
4690	* @param {Array\|Object} collection
4691	* @param {*} result
4692	* @param {Function} iterator
4693	* @param {Function} callback
4694	* @example
4695	*
4696	* // array
4697	* var order = [];
4698	* var collection = [1, 3, 2, 4];
4699	* var iterator = function(result, num, done) {
4700	* setTimeout(function() {
4701	* order.push(num);
4702	* done(null, result + num);
4703	* }, num * 10);
4704	* };
4705	* async.reduce(collection, 0, iterator, function(err, res) {
4706	* console.log(res); // 10
4707	* console.log(order); // [1, 3, 2, 4]
4708	* });
4709	*
4710	* @example
4711	*
4712	* // array with index
4713	* var order = [];
4714	* var collection = [1, 3, 2, 4];
4715	* var iterator = function(result, num, index, done) {
4716	* setTimeout(function() {
4717	* order.push([num, index]);
4718	* done(null, result + num);
4719	* }, num * 10);
4720	* };
4721	* async.reduce(collection, '', iterator, function(err, res) {
4722	* console.log(res); // '1324'
4723	* console.log(order); // [[1, 0], [3, 1], [2, 2], [4, 3]]
4724	* });
4725	*
4726	* @example
4727	*
4728	* // object
4729	* var order = [];
4730	* var object = { a: 1, b: 3, c: 2, d: 4 };
4731	* var iterator = function(result, num, done) {
4732	* setTimeout(function() {
4733	* order.push(num);
4734	* done(null, result + num);
4735	* }, num * 10);
4736	* };
4737	* async.reduce(collection, '', iterator, function(err, res) {
4738	* console.log(res); // '1324'
4739	* console.log(order); // [1, 3, 2, 4]
4740	* });
4741	*
4742	* @example
4743	*
4744	* // object with key
4745	* var order = [];
4746	* var object = { a: 1, b: 3, c: 2, d: 4 };
4747	* var iterator = function(result, num, key, done) {
4748	* setTimeout(function() {
4749	* order.push([num, key]);
4750	* done(null, result + num);
4751	* }, num * 10);
4752	* };
4753	* async.reduce(collection, 0, iterator, function(err, res) {
4754	* console.log(res); // 10
4755	* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'b'], [4, 'd']]
4756	* });
4757	*
4758	*/
4759	function reduce(collection, result, iterator, callback) {
4760	callback = onlyOnce(callback \|\| noop);
4761	var size, key, keys, iter, item, iterate;
4762	var sync = false;
4763	var completed = 0;
4764
4765	if (isArray(collection)) {
4766	size = collection.length;
4767	iterate = iterator.length === 4 ? arrayIteratorWithIndex : arrayIterator;
4768	} else if (!collection) {
4769	} else if (iteratorSymbol && collection[iteratorSymbol]) {
4770	size = Infinity;
4771	iter = collection[iteratorSymbol]();
4772	iterate = iterator.length === 4 ? symbolIteratorWithKey : symbolIterator;
4773	} else if (typeof collection === obj) {
4774	keys = nativeKeys(collection);
4775	size = keys.length;
4776	iterate = iterator.length === 4 ? objectIteratorWithKey : objectIterator;
4777	}
4778	if (!size) {
4779	return callback(null, result);
4780	}
4781	iterate(result);
4782
4783	function arrayIterator(result) {
4784	iterator(result, collection[completed], done);
4785	}
4786
4787	function arrayIteratorWithIndex(result) {
4788	iterator(result, collection[completed], completed, done);
4789	}
4790
4791	function symbolIterator(result) {
4792	item = iter.next();
4793	item.done ? callback(null, result) : iterator(result, item.value, done);
4794	}
4795
4796	function symbolIteratorWithKey(result) {
4797	item = iter.next();
4798	item.done ? callback(null, result) : iterator(result, item.value, completed, done);
4799	}
4800
4801	function objectIterator(result) {
4802	iterator(result, collection[keys[completed]], done);
4803	}
4804
4805	function objectIteratorWithKey(result) {
4806	key = keys[completed];
4807	iterator(result, collection[key], key, done);
4808	}
4809
4810	function done(err, result) {
4811	if (err) {
4812	callback(err, result);
4813	} else if (++completed === size) {
4814	iterator = throwError;
4815	callback(null, result);
4816	} else if (sync) {
4817	nextTick(function() {
4818	iterate(result);
4819	});
4820	} else {
4821	sync = true;
4822	iterate(result);
4823	}
4824	sync = false;
4825	}
4826	}
4827
4828	/**
4829	* @memberof async
4830	* @namespace reduceRight
4831	* @param {Array\|Object} collection
4832	* @param {*} result
4833	* @param {Function} iterator
4834	* @param {Function} callback
4835	* @example
4836	*
4837	* // array
4838	* var order = [];
4839	* var collection = [1, 3, 2, 4];
4840	* var iterator = function(result, num, done) {
4841	* setTimeout(function() {
4842	* order.push(num);
4843	* done(null, result + num);
4844	* }, num * 10);
4845	* };
4846	* async.reduceRight(collection, 0, iterator, function(err, res) {
4847	* console.log(res); // 10
4848	* console.log(order); // [4, 2, 3, 1]
4849	* });
4850	*
4851	* @example
4852	*
4853	* // array with index
4854	* var order = [];
4855	* var collection = [1, 3, 2, 4];
4856	* var iterator = function(result, num, index, done) {
4857	* setTimeout(function() {
4858	* order.push([num, index]);
4859	* done(null, result + num);
4860	* }, num * 10);
4861	* };
4862	* async.reduceRight(collection, '', iterator, function(err, res) {
4863	* console.log(res); // '4231'
4864	* console.log(order); // [[4, 3], [2, 2], [3, 1], [1, 0]]
4865	* });
4866	*
4867	* @example
4868	*
4869	* // object
4870	* var order = [];
4871	* var object = { a: 1, b: 3, c: 2, d: 4 };
4872	* var iterator = function(result, num, done) {
4873	* setTimeout(function() {
4874	* order.push(num);
4875	* done(null, result + num);
4876	* }, num * 10);
4877	* };
4878	* async.reduceRight(collection, '', iterator, function(err, res) {
4879	* console.log(res); // '4231'
4880	* console.log(order); // [4, 2, 3, 1]
4881	* });
4882	*
4883	* @example
4884	*
4885	* // object with key
4886	* var order = [];
4887	* var object = { a: 1, b: 3, c: 2, d: 4 };
4888	* var iterator = function(result, num, key, done) {
4889	* setTimeout(function() {
4890	* order.push([num, key]);
4891	* done(null, result + num);
4892	* }, num * 10);
4893	* };
4894	* async.reduceRight(collection, 0, iterator, function(err, res) {
4895	* console.log(res); // 10
4896	* console.log(order); // [[4, 3], [2, 2], [3, 1], [1, 0]]
4897	* });
4898	*
4899	*/
4900	function reduceRight(collection, result, iterator, callback) {
4901	callback = onlyOnce(callback \|\| noop);
4902	var resIndex, index, key, keys, iter, item, col, iterate;
4903	var sync = false;
4904
4905	if (isArray(collection)) {
4906	resIndex = collection.length;
4907	iterate = iterator.length === 4 ? arrayIteratorWithIndex : arrayIterator;
4908	} else if (!collection) {
4909	} else if (iteratorSymbol && collection[iteratorSymbol]) {
4910	col = [];
4911	iter = collection[iteratorSymbol]();
4912	index = -1;
4913	while ((item = iter.next()).done === false) {
4914	col[++index] = item.value;
4915	}
4916	collection = col;
4917	resIndex = col.length;
4918	iterate = iterator.length === 4 ? arrayIteratorWithIndex : arrayIterator;
4919	} else if (typeof collection === obj) {
4920	keys = nativeKeys(collection);
4921	resIndex = keys.length;
4922	iterate = iterator.length === 4 ? objectIteratorWithKey : objectIterator;
4923	}
4924	if (!resIndex) {
4925	return callback(null, result);
4926	}
4927	iterate(result);
4928
4929	function arrayIterator(result) {
4930	iterator(result, collection[--resIndex], done);
4931	}
4932
4933	function arrayIteratorWithIndex(result) {
4934	iterator(result, collection[--resIndex], resIndex, done);
4935	}
4936
4937	function objectIterator(result) {
4938	iterator(result, collection[keys[--resIndex]], done);
4939	}
4940
4941	function objectIteratorWithKey(result) {
4942	key = keys[--resIndex];
4943	iterator(result, collection[key], key, done);
4944	}
4945
4946	function done(err, result) {
4947	if (err) {
4948	callback(err, result);
4949	} else if (resIndex === 0) {
4950	iterate = throwError;
4951	callback(null, result);
4952	} else if (sync) {
4953	nextTick(function() {
4954	iterate(result);
4955	});
4956	} else {
4957	sync = true;
4958	iterate(result);
4959	}
4960	sync = false;
4961	}
4962	}
4963
4964	/**
4965	* @private
4966	* @param {Function} arrayEach
4967	* @param {Function} baseEach
4968	* @param {Function} symbolEach
4969	*/
4970	function createTransform(arrayEach, baseEach, symbolEach) {
4971	return function transform(collection, accumulator, iterator, callback) {
4972	if (arguments.length === 3) {
4973	callback = iterator;
4974	iterator = accumulator;
4975	accumulator = undefined;
4976	}
4977	callback = callback \|\| noop;
4978	var size, keys, result;
4979	var completed = 0;
4980
4981	if (isArray(collection)) {
4982	size = collection.length;
4983	result = accumulator !== undefined ? accumulator : [];
4984	arrayEach(collection, result, iterator, done);
4985	} else if (!collection) {
4986	} else if (iteratorSymbol && collection[iteratorSymbol]) {
4987	result = accumulator !== undefined ? accumulator : {};
4988	size = symbolEach(collection, result, iterator, done);
4989	size && size === completed && callback(null, result);
4990	} else if (typeof collection === obj) {
4991	keys = nativeKeys(collection);
4992	size = keys.length;
4993	result = accumulator !== undefined ? accumulator : {};
4994	baseEach(collection, result, iterator, done, keys);
4995	}
4996	if (!size) {
4997	callback(null, accumulator !== undefined ? accumulator : result \|\| {});
4998	}
4999
5000	function done(err, bool) {
5001	if (err) {
5002	callback = once(callback);
5003	callback(err, isArray(result) ? createArray(result) : objectClone(result));
5004	} else if (++completed === size) {
5005	callback(null, result);
5006	} else if (bool === false) {
5007	callback = once(callback);
5008	callback(null, isArray(result) ? createArray(result) : objectClone(result));
5009	}
5010	}
5011	};
5012	}
5013
5014	/**
5015	* @memberof async
5016	* @namespace transformSeries
5017	* @param {Array\|Object} collection
5018	* @param {Array\|Object\|Function} [accumulator]
5019	* @param {Function} [iterator]
5020	* @param {Function} [callback]
5021	* @example
5022	*
5023	* // array
5024	* var order = [];
5025	* var collection = [1, 3, 2, 4];
5026	* var iterator = function(result, num, done) {
5027	* setTimeout(function() {
5028	* order.push(num);
5029	* result.push(num)
5030	* done();
5031	* }, num * 10);
5032	* };
5033	* async.transformSeries(collection, iterator, function(err, res) {
5034	* console.log(res); // [1, 3, 2, 4]
5035	* console.log(order); // [1, 3, 2, 4]
5036	* });
5037	*
5038	* @example
5039	*
5040	* // array with index and accumulator
5041	* var order = [];
5042	* var collection = [1, 3, 2, 4];
5043	* var iterator = function(result, num, index, done) {
5044	* setTimeout(function() {
5045	* order.push([num, index]);
5046	* result[index] = num;
5047	* done();
5048	* }, num * 10);
5049	* };
5050	* async.transformSeries(collection, {}, iterator, function(err, res) {
5051	* console.log(res); // { '0': 1, '1': 3, '2': 2, '3': 4 }
5052	* console.log(order); // [[1, 0], [3, 1], [2, 2], [4, 3]]
5053	* });
5054	*
5055	* @example
5056	*
5057	* // object with accumulator
5058	* var order = [];
5059	* var object = { a: 1, b: 3, c: 2, d: 4 };
5060	* var iterator = function(result, num, done) {
5061	* setTimeout(function() {
5062	* order.push(num);
5063	* result.push(num);
5064	* done();
5065	* }, num * 10);
5066	* };
5067	* async.transformSeries(collection, [], iterator, function(err, res) {
5068	* console.log(res); // [1, 3, 2, 4]
5069	* console.log(order); // [1, 3, 2, 4]
5070	* });
5071	*
5072	* @example
5073	*
5074	* // object with key
5075	* var order = [];
5076	* var object = { a: 1, b: 3, c: 2, d: 4 };
5077	* var iterator = function(result, num, key, done) {
5078	* setTimeout(function() {
5079	* order.push([num, key]);
5080	* result[key] = num;
5081	* done();
5082	* }, num * 10);
5083	* };
5084	* async.transformSeries(collection, iterator, function(err, res) {
5085	* console.log(res); // { a: 1, b: 3, c: 2, d: 4 }
5086	* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'b'], [4, 'd']]
5087	* });
5088	*
5089	*/
5090	function transformSeries(collection, accumulator, iterator, callback) {
5091	if (arguments.length === 3) {
5092	callback = iterator;
5093	iterator = accumulator;
5094	accumulator = undefined;
5095	}
5096	callback = onlyOnce(callback \|\| noop);
5097	var size, key, keys, iter, item, iterate, result;
5098	var sync = false;
5099	var completed = 0;
5100
5101	if (isArray(collection)) {
5102	size = collection.length;
5103	result = accumulator !== undefined ? accumulator : [];
5104	iterate = iterator.length === 4 ? arrayIteratorWithIndex : arrayIterator;
5105	} else if (!collection) {
5106	} else if (iteratorSymbol && collection[iteratorSymbol]) {
5107	size = Infinity;
5108	iter = collection[iteratorSymbol]();
5109	result = accumulator !== undefined ? accumulator : {};
5110	iterate = iterator.length === 4 ? symbolIteratorWithKey : symbolIterator;
5111	} else if (typeof collection === obj) {
5112	keys = nativeKeys(collection);
5113	size = keys.length;
5114	result = accumulator !== undefined ? accumulator : {};
5115	iterate = iterator.length === 4 ? objectIteratorWithKey : objectIterator;
5116	}
5117	if (!size) {
5118	return callback(null, accumulator !== undefined ? accumulator : result \|\| {});
5119	}
5120	iterate();
5121
5122	function arrayIterator() {
5123	iterator(result, collection[completed], done);
5124	}
5125
5126	function arrayIteratorWithIndex() {
5127	iterator(result, collection[completed], completed, done);
5128	}
5129
5130	function symbolIterator() {
5131	item = iter.next();
5132	item.done ? callback(null, result) : iterator(result, item.value, done);
5133	}
5134
5135	function symbolIteratorWithKey() {
5136	item = iter.next();
5137	item.done ? callback(null, result) : iterator(result, item.value, completed, done);
5138	}
5139
5140	function objectIterator() {
5141	iterator(result, collection[keys[completed]], done);
5142	}
5143
5144	function objectIteratorWithKey() {
5145	key = keys[completed];
5146	iterator(result, collection[key], key, done);
5147	}
5148
5149	function done(err, bool) {
5150	if (err) {
5151	callback(err, result);
5152	} else if (++completed === size \|\| bool === false) {
5153	iterate = throwError;
5154	callback(null, result);
5155	} else if (sync) {
5156	nextTick(iterate);
5157	} else {
5158	sync = true;
5159	iterate();
5160	}
5161	sync = false;
5162	}
5163	}
5164
5165	/**
5166	* @memberof async
5167	* @namespace transformLimit
5168	* @param {Array\|Object} collection
5169	* @param {number} limit - limit >= 1
5170	* @param {Array\|Object\|Function} [accumulator]
5171	* @param {Function} [iterator]
5172	* @param {Function} [callback]
5173	* @example
5174	*
5175	* // array
5176	* var order = [];
5177	* var array = [1, 5, 3, 4, 2];
5178	* var iterator = function(result, num, done) {
5179	* setTimeout(function() {
5180	* order.push(num);
5181	* result.push(num);
5182	* done();
5183	* }, num * 10);
5184	* };
5185	* async.transformLimit(array, 2, iterator, function(err, res) {
5186	* console.log(res); // [1, 3, 5, 2, 4]
5187	* console.log(order); // [1, 3, 5, 2, 4]
5188	* });
5189	*
5190	* @example
5191	*
5192	* // array with index and accumulator
5193	* var order = [];
5194	* var array = [1, 5, 3, 4, 2];
5195	* var iterator = function(result, num, index, done) {
5196	* setTimeout(function() {
5197	* order.push([num, index]);
5198	* result[index] = key;
5199	* done();
5200	* }, num * 10);
5201	* };
5202	* async.transformLimit(array, 2, {}, iterator, function(err, res) {
5203	* console.log(res); // { '0': 1, '1': 5, '2': 3, '3': 4, '4': 2 }
5204	* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
5205	* });
5206	*
5207	* @example
5208	*
5209	* // object with accumulator
5210	* var order = [];
5211	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
5212	* var iterator = function(result, num, done) {
5213	* setTimeout(function() {
5214	* order.push(num);
5215	* result.push(num);
5216	* done();
5217	* }, num * 10);
5218	* };
5219	* async.transformLimit(object, 2, [], iterator, function(err, res) {
5220	* console.log(res); // [1, 3, 5, 2, 4]
5221	* console.log(order); // [1, 3, 5, 2, 4]
5222	* });
5223	*
5224	* @example
5225	*
5226	* // object with key
5227	* var order = [];
5228	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
5229	* var iterator = function(result, num, key, done) {
5230	* setTimeout(function() {
5231	* order.push([num, key]);
5232	* result[key] = num;
5233	* done();
5234	* }, num * 10);
5235	* };
5236	* async.transformLimit(object, 2, iterator, function(err, res) {
5237	* console.log(res); // { a: 1, b: 5, c: 3, d: 4, e: 2 };
5238	* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
5239	* });
5240	*
5241	*/
5242	function transformLimit(collection, limit, accumulator, iterator, callback) {
5243	if (arguments.length === 4) {
5244	callback = iterator;
5245	iterator = accumulator;
5246	accumulator = undefined;
5247	}
5248	callback = callback \|\| noop;
5249	var size, index, key, keys, iter, item, iterate, result;
5250	var sync = false;
5251	var started = 0;
5252	var completed = 0;
5253
5254	if (isArray(collection)) {
5255	size = collection.length;
5256	result = accumulator !== undefined ? accumulator : [];
5257	iterate = iterator.length === 4 ? arrayIteratorWithIndex : arrayIterator;
5258	} else if (!collection) {
5259	} else if (iteratorSymbol && collection[iteratorSymbol]) {
5260	size = Infinity;
5261	iter = collection[iteratorSymbol]();
5262	result = accumulator !== undefined ? accumulator : {};
5263	iterate = iterator.length === 4 ? symbolIteratorWithKey : symbolIterator;
5264	} else if (typeof collection === obj) {
5265	keys = nativeKeys(collection);
5266	size = keys.length;
5267	result = accumulator !== undefined ? accumulator : {};
5268	iterate = iterator.length === 4 ? objectIteratorWithKey : objectIterator;
5269	}
5270	if (!size \|\| isNaN(limit) \|\| limit < 1) {
5271	return callback(null, accumulator !== undefined ? accumulator : result \|\| {});
5272	}
5273	timesSync(limit > size ? size : limit, iterate);
5274
5275	function arrayIterator() {
5276	index = started++;
5277	if (index < size) {
5278	iterator(result, collection[index], onlyOnce(done));
5279	}
5280	}
5281
5282	function arrayIteratorWithIndex() {
5283	index = started++;
5284	if (index < size) {
5285	iterator(result, collection[index], index, onlyOnce(done));
5286	}
5287	}
5288
5289	function symbolIterator() {
5290	item = iter.next();
5291	if (item.done === false) {
5292	started++;
5293	iterator(result, item.value, onlyOnce(done));
5294	} else if (completed === started && iterator !== noop) {
5295	iterator = noop;
5296	callback(null, result);
5297	}
5298	}
5299
5300	function symbolIteratorWithKey() {
5301	item = iter.next();
5302	if (item.done === false) {
5303	iterator(result, item.value, started++, onlyOnce(done));
5304	} else if (completed === started && iterator !== noop) {
5305	iterator = noop;
5306	callback(null, result);
5307	}
5308	}
5309
5310	function objectIterator() {
5311	index = started++;
5312	if (index < size) {
5313	iterator(result, collection[keys[index]], onlyOnce(done));
5314	}
5315	}
5316
5317	function objectIteratorWithKey() {
5318	index = started++;
5319	if (index < size) {
5320	key = keys[index];
5321	iterator(result, collection[key], key, onlyOnce(done));
5322	}
5323	}
5324
5325	function done(err, bool) {
5326	if (err \|\| bool === false) {
5327	iterate = noop;
5328	callback(err \|\| null, isArray(result) ? createArray(result) : objectClone(result));
5329	callback = noop;
5330	} else if (++completed === size) {
5331	iterator = noop;
5332	callback(null, result);
5333	} else if (sync) {
5334	nextTick(iterate);
5335	} else {
5336	sync = true;
5337	iterate();
5338	}
5339	sync = false;
5340	}
5341	}
5342
5343	/**
5344	* @private
5345	* @param {function} arrayEach
5346	* @param {function} baseEach
5347	* @param {function} symbolEach
5348	*/
5349	function createSortBy(arrayEach, baseEach, symbolEach) {
5350	return function sortBy(collection, iterator, callback) {
5351	callback = callback \|\| noop;
5352	var size, array, criteria;
5353	var completed = 0;
5354
5355	if (isArray(collection)) {
5356	size = collection.length;
5357	array = Array(size);
5358	criteria = Array(size);
5359	arrayEach(collection, iterator, createCallback);
5360	} else if (!collection) {
5361	} else if (iteratorSymbol && collection[iteratorSymbol]) {
5362	array = [];
5363	criteria = [];
5364	size = symbolEach(collection, iterator, createCallback);
5365	size && size === completed && callback(null, sortByCriteria(array, criteria));
5366	} else if (typeof collection === obj) {
5367	var keys = nativeKeys(collection);
5368	size = keys.length;
5369	array = Array(size);
5370	criteria = Array(size);
5371	baseEach(collection, iterator, createCallback, keys);
5372	}
5373	if (!size) {
5374	callback(null, []);
5375	}
5376
5377	function createCallback(index, value) {
5378	var called = false;
5379	array[index] = value;
5380	return function done(err, criterion) {
5381	if (called) {
5382	throwError();
5383	}
5384	called = true;
5385	criteria[index] = criterion;
5386	if (err) {
5387	callback = once(callback);
5388	callback(err);
5389	} else if (++completed === size) {
5390	callback(null, sortByCriteria(array, criteria));
5391	}
5392	};
5393	}
5394	};
5395	}
5396
5397	/**
5398	* @memberof async
5399	* @namespace sortBySeries
5400	* @param {Array\|Object} collection
5401	* @param {Function} iterator
5402	* @param {Function} callback
5403	* @example
5404	*
5405	* // array
5406	* var order = [];
5407	* var array = [1, 3, 2];
5408	* var iterator = function(num, done) {
5409	* setTimeout(function() {
5410	* order.push(num);
5411	* done(null, num);
5412	* }, num * 10);
5413	* };
5414	* async.sortBySeries(array, iterator, function(err, res) {
5415	* console.log(res); // [1, 2, 3];
5416	* console.log(order); // [1, 3, 2]
5417	* });
5418	*
5419	* @example
5420	*
5421	* // array with index
5422	* var order = [];
5423	* var array = [1, 3, 2];
5424	* var iterator = function(num, index, done) {
5425	* setTimeout(function() {
5426	* order.push([num, index]);
5427	* done(null, num);
5428	* }, num * 10);
5429	* };
5430	* async.sortBySeries(array, iterator, function(err, res) {
5431	* console.log(res); // [1, 2, 3]
5432	* console.log(order); // [[1, 0], [3, 1], [2, 2]]
5433	* });
5434	*
5435	* @example
5436	*
5437	* // object
5438	* var order = [];
5439	* var object = { a: 1, b: 3, c: 2 };
5440	* var iterator = function(num, done) {
5441	* setTimeout(function() {
5442	* order.push(num);
5443	* done(null, num);
5444	* }, num * 10);
5445	* };
5446	* async.sortBySeries(object, iterator, function(err, res) {
5447	* console.log(res); // [1, 2, 3]
5448	* console.log(order); // [1, 3, 2]
5449	* });
5450	*
5451	* @example
5452	*
5453	* // object with key
5454	* var order = [];
5455	* var object = { a: 1, b: 3, c: 2 };
5456	* var iterator = function(num, key, done) {
5457	* setTimeout(function() {
5458	* order.push([num, key]);
5459	* done(null, num);
5460	* }, num * 10);
5461	* };
5462	* async.sortBySeries(object, iterator, function(err, res) {
5463	* console.log(res); // [1, 2, 3]
5464	* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'c']]
5465	* });
5466	*
5467	*/
5468	function sortBySeries(collection, iterator, callback) {
5469	callback = onlyOnce(callback \|\| noop);
5470	var size, key, value, keys, iter, item, array, criteria, iterate;
5471	var sync = false;
5472	var completed = 0;
5473
5474	if (isArray(collection)) {
5475	size = collection.length;
5476	array = collection;
5477	criteria = Array(size);
5478	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
5479	} else if (!collection) {
5480	} else if (iteratorSymbol && collection[iteratorSymbol]) {
5481	size = Infinity;
5482	array = [];
5483	criteria = [];
5484	iter = collection[iteratorSymbol]();
5485	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
5486	} else if (typeof collection === obj) {
5487	keys = nativeKeys(collection);
5488	size = keys.length;
5489	array = Array(size);
5490	criteria = Array(size);
5491	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
5492	}
5493	if (!size) {
5494	return callback(null, []);
5495	}
5496	iterate();
5497
5498	function arrayIterator() {
5499	value = collection[completed];
5500	iterator(value, done);
5501	}
5502
5503	function arrayIteratorWithIndex() {
5504	value = collection[completed];
5505	iterator(value, completed, done);
5506	}
5507
5508	function symbolIterator() {
5509	item = iter.next();
5510	if (item.done) {
5511	return callback(null, sortByCriteria(array, criteria));
5512	}
5513	value = item.value;
5514	array[completed] = value;
5515	iterator(value, done);
5516	}
5517
5518	function symbolIteratorWithKey() {
5519	item = iter.next();
5520	if (item.done) {
5521	return callback(null, sortByCriteria(array, criteria));
5522	}
5523	value = item.value;
5524	array[completed] = value;
5525	iterator(value, completed, done);
5526	}
5527
5528	function objectIterator() {
5529	value = collection[keys[completed]];
5530	array[completed] = value;
5531	iterator(value, done);
5532	}
5533
5534	function objectIteratorWithKey() {
5535	key = keys[completed];
5536	value = collection[key];
5537	array[completed] = value;
5538	iterator(value, key, done);
5539	}
5540
5541	function done(err, criterion) {
5542	criteria[completed] = criterion;
5543	if (err) {
5544	callback(err);
5545	} else if (++completed === size) {
5546	iterate = throwError;
5547	callback(null, sortByCriteria(array, criteria));
5548	} else if (sync) {
5549	nextTick(iterate);
5550	} else {
5551	sync = true;
5552	iterate();
5553	}
5554	sync = false;
5555	}
5556	}
5557
5558	/**
5559	* @memberof async
5560	* @namespace sortByLimit
5561	* @param {Array\|Object} collection
5562	* @param {number} limit - limit >= 1
5563	* @param {Function} iterator
5564	* @param {Function} callback
5565	* @example
5566	*
5567	* // array
5568	* var order = [];
5569	* var array = [1, 5, 3, 4, 2];
5570	* var iterator = function(num, done) {
5571	* setTimeout(function() {
5572	* order.push(num);
5573	* done(null, num);
5574	* }, num * 10);
5575	* };
5576	* async.sortByLimit(array, 2, iterator, function(err, res) {
5577	* console.log(res); // [1, 2, 3, 4, 5]
5578	* console.log(order); // [1, 3, 5, 2, 4]
5579	* });
5580	*
5581	* @example
5582	*
5583	* // array with index
5584	* var order = [];
5585	* var array = [1, 5, 3, 4, 2];
5586	* var iterator = function(num, index, done) {
5587	* setTimeout(function() {
5588	* order.push([num, index]);
5589	* done(null, num);
5590	* }, num * 10);
5591	* };
5592	* async.sortByLimit(array, 2, iterator, function(err, res) {
5593	* console.log(res); // [1, 2, 3, 4, 5]
5594	* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
5595	* });
5596	*
5597	* @example
5598	*
5599	* // object
5600	* var order = [];
5601	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
5602	* var iterator = function(num, done) {
5603	* setTimeout(function() {
5604	* order.push(num);
5605	* done(null, num);
5606	* }, num * 10);
5607	* };
5608	* async.sortByLimit(object, 2, iterator, function(err, res) {
5609	* console.log(res); // [1, 2, 3, 4, 5]
5610	* console.log(order); // [1, 3, 5, 2, 4]
5611	* });
5612	*
5613	* @example
5614	*
5615	* // object with key
5616	* var order = [];
5617	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
5618	* var iterator = function(num, key, done) {
5619	* setTimeout(function() {
5620	* order.push([num, key]);
5621	* done(null, num);
5622	* }, num * 10);
5623	* };
5624	* async.sortByLimit(object, 2, iterator, function(err, res) {
5625	* console.log(res); // [1, 2, 3, 4, 5]
5626	* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
5627	* });
5628	*
5629	*/
5630	function sortByLimit(collection, limit, iterator, callback) {
5631	callback = callback \|\| noop;
5632	var size, index, key, value, array, keys, iter, item, criteria, iterate;
5633	var sync = false;
5634	var started = 0;
5635	var completed = 0;
5636
5637	if (isArray(collection)) {
5638	size = collection.length;
5639	array = collection;
5640	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
5641	} else if (!collection) {
5642	} else if (iteratorSymbol && collection[iteratorSymbol]) {
5643	size = Infinity;
5644	iter = collection[iteratorSymbol]();
5645	array = [];
5646	criteria = [];
5647	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
5648	} else if (typeof collection === obj) {
5649	keys = nativeKeys(collection);
5650	size = keys.length;
5651	array = Array(size);
5652	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
5653	}
5654	if (!size \|\| isNaN(limit) \|\| limit < 1) {
5655	return callback(null, []);
5656	}
5657	criteria = criteria \|\| Array(size);
5658	timesSync(limit > size ? size : limit, iterate);
5659
5660	function arrayIterator() {
5661	if (started < size) {
5662	value = collection[started];
5663	iterator(value, createCallback(value, started++));
5664	}
5665	}
5666
5667	function arrayIteratorWithIndex() {
5668	index = started++;
5669	if (index < size) {
5670	value = collection[index];
5671	iterator(value, index, createCallback(value, index));
5672	}
5673	}
5674
5675	function symbolIterator() {
5676	item = iter.next();
5677	if (item.done === false) {
5678	value = item.value;
5679	array[started] = value;
5680	iterator(value, createCallback(value, started++));
5681	} else if (completed === started && iterator !== noop) {
5682	iterator = noop;
5683	callback(null, sortByCriteria(array, criteria));
5684	}
5685	}
5686
5687	function symbolIteratorWithKey() {
5688	item = iter.next();
5689	if (item.done === false) {
5690	value = item.value;
5691	array[started] = value;
5692	iterator(value, started, createCallback(value, started++));
5693	} else if (completed === started && iterator !== noop) {
5694	iterator = noop;
5695	callback(null, sortByCriteria(array, criteria));
5696	}
5697	}
5698
5699	function objectIterator() {
5700	if (started < size) {
5701	value = collection[keys[started]];
5702	array[started] = value;
5703	iterator(value, createCallback(value, started++));
5704	}
5705	}
5706
5707	function objectIteratorWithKey() {
5708	if (started < size) {
5709	key = keys[started];
5710	value = collection[key];
5711	array[started] = value;
5712	iterator(value, key, createCallback(value, started++));
5713	}
5714	}
5715
5716	function createCallback(value, index) {
5717	var called = false;
5718	return function(err, criterion) {
5719	if (called) {
5720	throwError();
5721	}
5722	called = true;
5723	criteria[index] = criterion;
5724	if (err) {
5725	iterate = noop;
5726	callback(err);
5727	callback = noop;
5728	} else if (++completed === size) {
5729	callback(null, sortByCriteria(array, criteria));
5730	} else if (sync) {
5731	nextTick(iterate);
5732	} else {
5733	sync = true;
5734	iterate();
5735	}
5736	sync = false;
5737	};
5738	}
5739	}
5740
5741	/**
5742	* @memberof async
5743	* @namespace some
5744	* @param {Array\|Object} collection
5745	* @param {Function} iterator
5746	* @param {Function} callback
5747	* @example
5748	*
5749	* // array
5750	* var order = [];
5751	* var array = [1, 3, 2];
5752	* var iterator = function(num, done) {
5753	* setTimeout(function() {
5754	* order.push(num);
5755	* done(null, num % 2);
5756	* }, num * 10);
5757	* };
5758	* async.some(array, iterator, function(err, res) {
5759	* console.log(res); // true
5760	* console.log(order); // [1]
5761	* });
5762	*
5763	* @example
5764	*
5765	* // array with index
5766	* var order = [];
5767	* var array = [1, 3, 2];
5768	* var iterator = function(num, index, done) {
5769	* setTimeout(function() {
5770	* order.push([num, index]);
5771	* done(null, num % 2);
5772	* }, num * 10);
5773	* };
5774	* async.some(array, iterator, function(err, res) {
5775	* console.log(res); // true
5776	* console.log(order); // [[1, 0]]
5777	* });
5778	*
5779	* @example
5780	*
5781	* // object
5782	* var order = [];
5783	* var object = { a: 1, b: 3, c: 2 };
5784	* var iterator = function(num, done) {
5785	* setTimeout(function() {
5786	* order.push(num);
5787	* done(null, num % 2);
5788	* }, num * 10);
5789	* };
5790	* async.some(object, iterator, function(err, res) {
5791	* console.log(res); // true
5792	* console.log(order); // [1]
5793	* });
5794	*
5795	* @example
5796	*
5797	* // object with key
5798	* var order = [];
5799	* var object = { a: 1, b: 3, c: 2 };
5800	* var iterator = function(num, key, done) {
5801	* setTimeout(function() {
5802	* order.push([num, key]);
5803	* done(null, num % 2);
5804	* }, num * 10);
5805	* };
5806	* async.some(object, iterator, function(err, res) {
5807	* console.log(res); // true
5808	* console.log(order); // [[1, 'a']]
5809	* });
5810	*
5811	*/
5812	function some(collection, iterator, callback) {
5813	callback = callback \|\| noop;
5814	detect(collection, iterator, done);
5815
5816	function done(err, res) {
5817	if (err) {
5818	return callback(err);
5819	}
5820	callback(null, !!res);
5821	}
5822	}
5823
5824	/**
5825	* @memberof async
5826	* @namespace someSeries
5827	* @param {Array\|Object} collection
5828	* @param {Function} iterator
5829	* @param {Function} callback
5830	* @example
5831	*
5832	* // array
5833	* var order = [];
5834	* var array = [1, 3, 2];
5835	* var iterator = function(num, done) {
5836	* setTimeout(function() {
5837	* order.push(num);
5838	* done(null, num % 2);
5839	* }, num * 10);
5840	* };
5841	* async.someSeries(array, iterator, function(err, res) {
5842	* console.log(res); // true
5843	* console.log(order); // [1]
5844	* });
5845	*
5846	* @example
5847	*
5848	* // array with index
5849	* var order = [];
5850	* var array = [1, 3, 2];
5851	* var iterator = function(num, index, done) {
5852	* setTimeout(function() {
5853	* order.push([num, index]);
5854	* done(null, num % 2);
5855	* }, num * 10);
5856	* };
5857	* async.someSeries(array, iterator, function(err, res) {
5858	* console.log(res); // true
5859	* console.log(order); // [[1, 0]]
5860	* });
5861	*
5862	* @example
5863	*
5864	* // object
5865	* var order = [];
5866	* var object = { a: 1, b: 3, c: 2 };
5867	* var iterator = function(num, done) {
5868	* setTimeout(function() {
5869	* order.push(num);
5870	* done(null, num % 2);
5871	* }, num * 10);
5872	* };
5873	* async.someSeries(object, iterator, function(err, res) {
5874	* console.log(res); // true
5875	* console.log(order); // [1]
5876	* });
5877	*
5878	* @example
5879	*
5880	* // object with key
5881	* var order = [];
5882	* var object = { a: 1, b: 3, c: 2 };
5883	* var iterator = function(num, key, done) {
5884	* setTimeout(function() {
5885	* order.push([num, key]);
5886	* done(null, num % 2);
5887	* }, num * 10);
5888	* };
5889	* async.someSeries(object, iterator, function(err, res) {
5890	* console.log(res); // true
5891	* console.log(order); // [[1, 'a']]
5892	* });
5893	*
5894	*/
5895	function someSeries(collection, iterator, callback) {
5896	callback = callback \|\| noop;
5897	detectSeries(collection, iterator, done);
5898
5899	function done(err, res) {
5900	if (err) {
5901	return callback(err);
5902	}
5903	callback(null, !!res);
5904	}
5905	}
5906
5907	/**
5908	* @memberof async
5909	* @namespace someLimit
5910	* @param {Array\|Object} collection
5911	* @param {number} limit - limit >= 1
5912	* @param {Function} iterator
5913	* @param {Function} callback
5914	* @example
5915	*
5916	* // array
5917	* var order = [];
5918	* var array = [1, 5, 3, 4, 2];
5919	* var iterator = function(num, done) {
5920	* setTimeout(function() {
5921	* order.push(num);
5922	* done(null, num % 2);
5923	* }, num * 10);
5924	* };
5925	* async.someLimit(array, 2, iterator, function(err, res) {
5926	* console.log(res); // true
5927	* console.log(order); // [1]
5928	* });
5929	*
5930	* @example
5931	*
5932	* // array with index
5933	* var order = [];
5934	* var array = [1, 5, 3, 4, 2];
5935	* var iterator = function(num, index, done) {
5936	* setTimeout(function() {
5937	* order.push([num, index]);
5938	* done(null, num % 2);
5939	* }, num * 10);
5940	* };
5941	* async.someLimit(array, 2, iterator, function(err, res) {
5942	* console.log(res); // true
5943	* console.log(order); // [[1, 0]]
5944	* });
5945	*
5946	* @example
5947	*
5948	* // object
5949	* var order = [];
5950	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
5951	* var iterator = function(num, done) {
5952	* setTimeout(function() {
5953	* order.push(num);
5954	* done(null, num % 2);
5955	* }, num * 10);
5956	* };
5957	* async.someLimit(object, 2, iterator, function(err, res) {
5958	* console.log(res); // true
5959	* console.log(order); // [1]
5960	* });
5961	*
5962	* @example
5963	*
5964	* // object with key
5965	* var order = [];
5966	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
5967	* var iterator = function(num, key, done) {
5968	* setTimeout(function() {
5969	* order.push([num, key]);
5970	* done(null, num % 2);
5971	* }, num * 10);
5972	* };
5973	* async.someLimit(object, 2, iterator, function(err, res) {
5974	* console.log(res); // true
5975	* console.log(order); // [[1, 'a']]
5976	* });
5977	*
5978	*/
5979	function someLimit(collection, limit, iterator, callback) {
5980	callback = callback \|\| noop;
5981	detectLimit(collection, limit, iterator, done);
5982
5983	function done(err, res) {
5984	if (err) {
5985	return callback(err);
5986	}
5987	callback(null, !!res);
5988	}
5989	}
5990
5991	/**
5992	* @private
5993	* @param {Function} arrayEach
5994	* @param {Function} baseEach
5995	* @param {Function} symbolEach
5996	*/
5997	function createEvery(arrayEach, baseEach, symbolEach) {
5998	var deny = createDetect(arrayEach, baseEach, symbolEach, false);
5999
6000	return function every(collection, iterator, callback) {
6001	callback = callback \|\| noop;
6002	deny(collection, iterator, done);
6003
6004	function done(err, res) {
6005	if (err) {
6006	return callback(err);
6007	}
6008	callback(null, !res);
6009	}
6010	};
6011	}
6012
6013	/**
6014	* @private
6015	*/
6016	function createEverySeries() {
6017	var denySeries = createDetectSeries(false);
6018
6019	return function everySeries(collection, iterator, callback) {
6020	callback = callback \|\| noop;
6021	denySeries(collection, iterator, done);
6022
6023	function done(err, res) {
6024	if (err) {
6025	return callback(err);
6026	}
6027	callback(null, !res);
6028	}
6029	};
6030	}
6031
6032	/**
6033	* @private
6034	*/
6035	function createEveryLimit() {
6036	var denyLimit = createDetectLimit(false);
6037
6038	return function everyLimit(collection, limit, iterator, callback) {
6039	callback = callback \|\| noop;
6040	denyLimit(collection, limit, iterator, done);
6041
6042	function done(err, res) {
6043	if (err) {
6044	return callback(err);
6045	}
6046	callback(null, !res);
6047	}
6048	};
6049	}
6050
6051	/**
6052	* @private
6053	* @param {Function} arrayEach
6054	* @param {Function} baseEach
6055	* @param {Function} symbolEach
6056	*/
6057	function createConcat(arrayEach, baseEach, symbolEach) {
6058	return function concat(collection, iterator, callback) {
6059	callback = callback \|\| noop;
6060	var size, result;
6061	var completed = 0;
6062
6063	if (isArray(collection)) {
6064	size = collection.length;
6065	result = Array(size);
6066	arrayEach(collection, iterator, createCallback);
6067	} else if (!collection) {
6068	} else if (iteratorSymbol && collection[iteratorSymbol]) {
6069	result = [];
6070	size = symbolEach(collection, iterator, createCallback);
6071	size && size === completed && callback(null, result);
6072	} else if (typeof collection === obj) {
6073	var keys = nativeKeys(collection);
6074	size = keys.length;
6075	result = Array(size);
6076	baseEach(collection, iterator, createCallback, keys);
6077	}
6078	if (!size) {
6079	callback(null, []);
6080	}
6081
6082	function createCallback(index) {
6083	return function done(err, res) {
6084	if (index === null) {
6085	throwError();
6086	}
6087	if (err) {
6088	index = null;
6089	callback = once(callback);
6090	arrayEachSync(result, function(array, index) {
6091	if (array === undefined) {
6092	result[index] = noop;
6093	}
6094	});
6095	callback(err, makeConcatResult(result));
6096	return;
6097	}
6098	switch (arguments.length) {
6099	case 0:
6100	case 1:
6101	result[index] = noop;
6102	break;
6103	case 2:
6104	result[index] = res;
6105	break;
6106	default:
6107	result[index] = slice(arguments, 1);
6108	break;
6109	}
6110	index = null;
6111	if (++completed === size) {
6112	callback(null, makeConcatResult(result));
6113	}
6114	};
6115	}
6116	};
6117	}
6118
6119	/**
6120	* @memberof async
6121	* @namespace concatSeries
6122	* @param {Array\|Object} collection
6123	* @param {Function} iterator
6124	* @param {Function} callback
6125	* @example
6126	*
6127	* // array
6128	* var order = [];
6129	* var array = [1, 3, 2];
6130	* var iterator = function(num, done) {
6131	* setTimeout(function() {
6132	* order.push(num);
6133	* done(null, [num]);
6134	* }, num * 10);
6135	* };
6136	* async.concatSeries(array, iterator, function(err, res) {
6137	* console.log(res); // [1, 3, 2];
6138	* console.log(order); // [1, 3, 2]
6139	* });
6140	*
6141	* @example
6142	*
6143	* // array with index
6144	* var order = [];
6145	* var array = [1, 3, 2];
6146	* var iterator = function(num, index, done) {
6147	* setTimeout(function() {
6148	* order.push([num, index]);
6149	* done(null, [num]);
6150	* }, num * 10);
6151	* };
6152	* async.concatSeries(array, iterator, function(err, res) {
6153	* console.log(res); // [1, 3, 2]
6154	* console.log(order); // [[1, 0], [3, 1], [2, 2]]
6155	* });
6156	*
6157	* @example
6158	*
6159	* // object
6160	* var order = [];
6161	* var object = { a: 1, b: 3, c: 2 };
6162	* var iterator = function(num, done) {
6163	* setTimeout(function() {
6164	* order.push(num);
6165	* done(null, [num]);
6166	* }, num * 10);
6167	* };
6168	* async.concatSeries(object, iterator, function(err, res) {
6169	* console.log(res); // [1, 3, 2]
6170	* console.log(order); // [1, 3, 2]
6171	* });
6172	*
6173	* @example
6174	*
6175	* // object with key
6176	* var order = [];
6177	* var object = { a: 1, b: 3, c: 2 };
6178	* var iterator = function(num, key, done) {
6179	* setTimeout(function() {
6180	* order.push([num, key]);
6181	* done(null, [num]);
6182	* }, num * 10);
6183	* };
6184	* async.concatSeries(object, iterator, function(err, res) {
6185	* console.log(res); // [1, 3, 2]
6186	* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'c']]
6187	* });
6188	*
6189	*/
6190	function concatSeries(collection, iterator, callback) {
6191	callback = onlyOnce(callback \|\| noop);
6192	var size, key, keys, iter, item, iterate;
6193	var sync = false;
6194	var result = [];
6195	var completed = 0;
6196
6197	if (isArray(collection)) {
6198	size = collection.length;
6199	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
6200	} else if (!collection) {
6201	} else if (iteratorSymbol && collection[iteratorSymbol]) {
6202	size = Infinity;
6203	iter = collection[iteratorSymbol]();
6204	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
6205	} else if (typeof collection === obj) {
6206	keys = nativeKeys(collection);
6207	size = keys.length;
6208	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
6209	}
6210	if (!size) {
6211	return callback(null, result);
6212	}
6213	iterate();
6214
6215	function arrayIterator() {
6216	iterator(collection[completed], done);
6217	}
6218
6219	function arrayIteratorWithIndex() {
6220	iterator(collection[completed], completed, done);
6221	}
6222
6223	function symbolIterator() {
6224	item = iter.next();
6225	item.done ? callback(null, result) : iterator(item.value, done);
6226	}
6227
6228	function symbolIteratorWithKey() {
6229	item = iter.next();
6230	item.done ? callback(null, result) : iterator(item.value, completed, done);
6231	}
6232
6233	function objectIterator() {
6234	iterator(collection[keys[completed]], done);
6235	}
6236
6237	function objectIteratorWithKey() {
6238	key = keys[completed];
6239	iterator(collection[key], key, done);
6240	}
6241
6242	function done(err, array) {
6243	if (isArray(array)) {
6244	nativePush.apply(result, array);
6245	} else if (arguments.length >= 2) {
6246	nativePush.apply(result, slice(arguments, 1));
6247	}
6248	if (err) {
6249	callback(err, result);
6250	} else if (++completed === size) {
6251	iterate = throwError;
6252	callback(null, result);
6253	} else if (sync) {
6254	nextTick(iterate);
6255	} else {
6256	sync = true;
6257	iterate();
6258	}
6259	sync = false;
6260	}
6261	}
6262
6263	/**
6264	* @memberof async
6265	* @namespace concatLimit
6266	* @param {Array\|Object} collection
6267	* @param {number} limit - limit >= 1
6268	* @param {Function} iterator
6269	* @param {Function} callback
6270	* @example
6271	*
6272	* // array
6273	* var order = [];
6274	* var array = [1, 5, 3, 4, 2];
6275	* var iterator = function(num, done) {
6276	* setTimeout(function() {
6277	* order.push(num);
6278	* done(null, [num]);
6279	* }, num * 10);
6280	* };
6281	* async.concatLimit(array, 2, iterator, function(err, res) {
6282	* console.log(res); // [1, 3, 5, 2, 4]
6283	* console.log(order); // [1, 3, 5, 2, 4]
6284	* });
6285	*
6286	* @example
6287	*
6288	* // array with index
6289	* var order = [];
6290	* var array = [1, 5, 3, 4, 2];
6291	* var iterator = function(num, index, done) {
6292	* setTimeout(function() {
6293	* order.push([num, index]);
6294	* done(null, [num]);
6295	* }, num * 10);
6296	* };
6297	* async.cocnatLimit(array, 2, iterator, function(err, res) {
6298	* console.log(res); // [1, 3, 5, 2, 4]
6299	* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
6300	* });
6301	*
6302	* @example
6303	*
6304	* // object
6305	* var order = [];
6306	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
6307	* var iterator = function(num, done) {
6308	* setTimeout(function() {
6309	* order.push(num);
6310	* done(null, [num]);
6311	* }, num * 10);
6312	* };
6313	* async.concatLimit(object, 2, iterator, function(err, res) {
6314	* console.log(res); // [1, 3, 5, 2, 4]
6315	* console.log(order); // [1, 3, 5, 2, 4]
6316	* });
6317	*
6318	* @example
6319	*
6320	* // object with key
6321	* var order = [];
6322	* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
6323	* var iterator = function(num, key, done) {
6324	* setTimeout(function() {
6325	* order.push([num, key]);
6326	* done(null, num);
6327	* }, num * 10);
6328	* };
6329	* async.cocnatLimit(object, 2, iterator, function(err, res) {
6330	* console.log(res); // [1, 3, 5, 2, 4]
6331	* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
6332	* });
6333	*
6334	*/
6335	function concatLimit(collection, limit, iterator, callback) {
6336	callback = callback \|\| noop;
6337	var size, key, iter, item, iterate, result;
6338	var sync = false;
6339	var started = 0;
6340	var completed = 0;
6341
6342	if (isArray(collection)) {
6343	size = collection.length;
6344	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
6345	} else if (!collection) {
6346	} else if (iteratorSymbol && collection[iteratorSymbol]) {
6347	size = Infinity;
6348	result = [];
6349	iter = collection[iteratorSymbol]();
6350	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
6351	} else if (typeof collection === obj) {
6352	var keys = nativeKeys(collection);
6353	size = keys.length;
6354	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
6355	}
6356	if (!size \|\| isNaN(limit) \|\| limit < 1) {
6357	return callback(null, []);
6358	}
6359	result = result \|\| Array(size);
6360	timesSync(limit > size ? size : limit, iterate);
6361
6362	function arrayIterator() {
6363	if (started < size) {
6364	iterator(collection[started], createCallback(started++));
6365	}
6366	}
6367
6368	function arrayIteratorWithIndex() {
6369	if (started < size) {
6370	iterator(collection[started], started, createCallback(started++));
6371	}
6372	}
6373
6374	function symbolIterator() {
6375	item = iter.next();
6376	if (item.done === false) {
6377	iterator(item.value, createCallback(started++));
6378	} else if (completed === started && iterator !== noop) {
6379	iterator = noop;
6380	callback(null, makeConcatResult(result));
6381	}
6382	}
6383
6384	function symbolIteratorWithKey() {
6385	item = iter.next();
6386	if (item.done === false) {
6387	iterator(item.value, started, createCallback(started++));
6388	} else if (completed === started && iterator !== noop) {
6389	iterator = noop;
6390	callback(null, makeConcatResult(result));
6391	}
6392	}
6393
6394	function objectIterator() {
6395	if (started < size) {
6396	iterator(collection[keys[started]], createCallback(started++));
6397	}
6398	}
6399
6400	function objectIteratorWithKey() {
6401	if (started < size) {
6402	key = keys[started];
6403	iterator(collection[key], key, createCallback(started++));
6404	}
6405	}
6406
6407	function createCallback(index) {
6408	return function(err, res) {
6409	if (index === null) {
6410	throwError();
6411	}
6412	if (err) {
6413	index = null;
6414	iterate = noop;
6415	callback = once(callback);
6416	arrayEachSync(result, function(array, index) {
6417	if (array === undefined) {
6418	result[index] = noop;
6419	}
6420	});
6421	callback(err, makeConcatResult(result));
6422	return;
6423	}
6424	switch (arguments.length) {
6425	case 0:
6426	case 1:
6427	result[index] = noop;
6428	break;
6429	case 2:
6430	result[index] = res;
6431	break;
6432	default:
6433	result[index] = slice(arguments, 1);
6434	break;
6435	}
6436	index = null;
6437	if (++completed === size) {
6438	iterate = throwError;
6439	callback(null, makeConcatResult(result));
6440	callback = throwError;
6441	} else if (sync) {
6442	nextTick(iterate);
6443	} else {
6444	sync = true;
6445	iterate();
6446	}
6447	sync = false;
6448	};
6449	}
6450	}
6451
6452	/**
6453	* @private
6454	* @param {Function} arrayEach
6455	* @param {Function} baseEach
6456	* @param {Function} symbolEach
6457	*/
6458	function createGroupBy(arrayEach, baseEach, symbolEach) {
6459	return function groupBy(collection, iterator, callback) {
6460	callback = callback \|\| noop;
6461	var size;
6462	var completed = 0;
6463	var result = {};
6464
6465	if (isArray(collection)) {
6466	size = collection.length;
6467	arrayEach(collection, iterator, createCallback);
6468	} else if (!collection) {
6469	} else if (iteratorSymbol && collection[iteratorSymbol]) {
6470	size = symbolEach(collection, iterator, createCallback);
6471	size && size === completed && callback(null, result);
6472	} else if (typeof collection === obj) {
6473	var keys = nativeKeys(collection);
6474	size = keys.length;
6475	baseEach(collection, iterator, createCallback, keys);
6476	}
6477	if (!size) {
6478	callback(null, {});
6479	}
6480
6481	function createCallback(value) {
6482	var called = false;
6483	return function done(err, key) {
6484	if (called) {
6485	throwError();
6486	}
6487	called = true;
6488	if (err) {
6489	callback = once(callback);
6490	callback(err, objectClone(result));
6491	return;
6492	}
6493	var array = result[key];
6494	if (!array) {
6495	result[key] = [value];
6496	} else {
6497	array.push(value);
6498	}
6499	if (++completed === size) {
6500	callback(null, result);
6501	}
6502	};
6503	}
6504	};
6505	}
6506
6507	/**
6508	* @memberof async
6509	* @namespace groupBySeries
6510	* @param {Array\|Object} collection
6511	* @param {Function} iterator
6512	* @param {Function} callback
6513	* @example
6514	*
6515	* // array
6516	* var order = [];
6517	* var array = [4.2, 6.4, 6.1];
6518	* var iterator = function(num, done) {
6519	* setTimeout(function() {
6520	* order.push(num);
6521	* done(null, Math.floor(num));
6522	* }, num * 10);
6523	* };
6524	* async.groupBySeries(array, iterator, function(err, res) {
6525	* console.log(res); // { '4': [4.2], '6': [6.4, 6.1] }
6526	* console.log(order); // [4.2, 6.4, 6.1]
6527	* });
6528	*
6529	* @example
6530	*
6531	* // array with index
6532	* var order = [];
6533	* var array = [4.2, 6.4, 6.1];
6534	* var iterator = function(num, index, done) {
6535	* setTimeout(function() {
6536	* order.push([num, index]);
6537	* done(null, Math.floor(num));
6538	* }, num * 10);
6539	* };
6540	* async.groupBySeries(array, iterator, function(err, res) {
6541	* console.log(res); // { '4': [4.2], '6': [6.4, 6.1] }
6542	* console.log(order); // [[4.2, 0], [6.4, 1], [6.1, 2]]
6543	* });
6544	*
6545	* @example
6546	*
6547	* // object
6548	* var order = [];
6549	* var object = { a: 4.2, b: 6.4, c: 6.1 };
6550	* var iterator = function(num, done) {
6551	* setTimeout(function() {
6552	* order.push(num);
6553	* done(null, Math.floor(num));
6554	* }, num * 10);
6555	* };
6556	* async.groupBySeries(object, iterator, function(err, res) {
6557	* console.log(res); // { '4': [4.2], '6': [6.4, 6.1] }
6558	* console.log(order); // [4.2, 6.4, 6.1]
6559	* });
6560	*
6561	* @example
6562	*
6563	* // object with key
6564	* var order = [];
6565	* var object = { a: 4.2, b: 6.4, c: 6.1 };
6566	* var iterator = function(num, key, done) {
6567	* setTimeout(function() {
6568	* order.push([num, key]);
6569	* done(null, Math.floor(num));
6570	* }, num * 10);
6571	* };
6572	* async.groupBySeries(object, iterator, function(err, res) {
6573	* console.log(res); // { '4': [4.2], '6': [6.4, 6.1] }
6574	* console.log(order); // [[4.2, 'a'], [6.4, 'b'], [6.1, 'c']]
6575	* });
6576	*
6577	*/
6578	function groupBySeries(collection, iterator, callback) {
6579	callback = onlyOnce(callback \|\| noop);
6580	var size, key, value, keys, iter, item, iterate;
6581	var sync = false;
6582	var completed = 0;
6583	var result = {};
6584
6585	if (isArray(collection)) {
6586	size = collection.length;
6587	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
6588	} else if (!collection) {
6589	} else if (iteratorSymbol && collection[iteratorSymbol]) {
6590	size = Infinity;
6591	iter = collection[iteratorSymbol]();
6592	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
6593	} else if (typeof collection === obj) {
6594	keys = nativeKeys(collection);
6595	size = keys.length;
6596	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
6597	}
6598	if (!size) {
6599	return callback(null, result);
6600	}
6601	iterate();
6602
6603	function arrayIterator() {
6604	value = collection[completed];
6605	iterator(value, done);
6606	}
6607
6608	function arrayIteratorWithIndex() {
6609	value = collection[completed];
6610	iterator(value, completed, done);
6611	}
6612
6613	function symbolIterator() {
6614	item = iter.next();
6615	value = item.value;
6616	item.done ? callback(null, result) : iterator(value, done);
6617	}
6618
6619	function symbolIteratorWithKey() {
6620	item = iter.next();
6621	value = item.value;
6622	item.done ? callback(null, result) : iterator(value, completed, done);
6623	}
6624
6625	function objectIterator() {
6626	value = collection[keys[completed]];
6627	iterator(value, done);
6628	}
6629
6630	function objectIteratorWithKey() {
6631	key = keys[completed];
6632	value = collection[key];
6633	iterator(value, key, done);
6634	}
6635
6636	function done(err, key) {
6637	if (err) {
6638	iterate = throwError;
6639	callback = onlyOnce(callback);
6640	callback(err, objectClone(result));
6641	return;
6642	}
6643	var array = result[key];
6644	if (!array) {
6645	result[key] = [value];
6646	} else {
6647	array.push(value);
6648	}
6649	if (++completed === size) {
6650	iterate = throwError;
6651	callback(null, result);
6652	} else if (sync) {
6653	nextTick(iterate);
6654	} else {
6655	sync = true;
6656	iterate();
6657	}
6658	sync = false;
6659	}
6660	}
6661
6662	/**
6663	* @memberof async
6664	* @namespace groupByLimit
6665	* @param {Array\|Object} collection
6666	* @param {Function} iterator
6667	* @param {Function} callback
6668	* @example
6669	*
6670	* // array
6671	* var order = [];
6672	* var array = [1.1, 5.9, 3.2, 3.9, 2.1];
6673	* var iterator = function(num, done) {
6674	* setTimeout(function() {
6675	* order.push(num);
6676	* done(null, Math.floor(num));
6677	* }, num * 10);
6678	* };
6679	* async.groupByLimit(array, 2, iterator, function(err, res) {
6680	* console.log(res); // { '1': [1.1], '3': [3.2, 3.9], '5': [5.9], '2': [2.1] }
6681	* console.log(order); // [1.1, 3.2, 5.9, 2.1, 3.9]
6682	* });
6683	*
6684	* @example
6685	*
6686	* // array with index
6687	* var order = [];
6688	* var array = [1.1, 5.9, 3.2, 3.9, 2.1];
6689	* var iterator = function(num, index, done) {
6690	* setTimeout(function() {
6691	* order.push([num, index]);
6692	* done(null, Math.floor(num));
6693	* }, num * 10);
6694	* };
6695	* async.groupByLimit(array, 2, iterator, function(err, res) {
6696	* console.log(res); // { '1': [1.1], '3': [3.2, 3.9], '5': [5.9], '2': [2.1] }
6697	* console.log(order); // [[1.1, 0], [3.2, 2], [5.9, 1], [2.1, 4], [3.9, 3]]
6698	* });
6699	*
6700	* @example
6701	*
6702	* // object
6703	* var order = [];
6704	* var object = { a: 1.1, b: 5.9, c: 3.2, d: 3.9, e: 2.1 }
6705	* var iterator = function(num, done) {
6706	* setTimeout(function() {
6707	* order.push(num);
6708	* done(null, Math.floor(num));
6709	* }, num * 10);
6710	* };
6711	* async.groupByLimit(object, 2, iterator, function(err, res) {
6712	* console.log(res); // { '1': [1.1], '3': [3.2, 3.9], '5': [5.9], '2': [2.1] }
6713	* console.log(order); // [1.1, 3.2, 5.9, 2.1, 3.9]
6714	* });
6715	*
6716	* @example
6717	*
6718	* // object with key
6719	* var order = [];
6720	* var object = { a: 1.1, b: 5.9, c: 3.2, d: 3.9, e: 2.1 }
6721	* var iterator = function(num, key, done) {
6722	* setTimeout(function() {
6723	* order.push([num, key]);
6724	* done(null, Math.floor(num));
6725	* }, num * 10);
6726	* };
6727	* async.groupByLimit(object, 2, iterator, function(err, res) {
6728	* console.log(res); // { '1': [1.1], '3': [3.2, 3.9], '5': [5.9], '2': [2.1] }
6729	* console.log(order); // [[1.1, 'a'], [3.2, 'c'], [5.9, 'b'], [2.1, 'e'], [3.9, 'd']]
6730	* });
6731	*
6732	*/
6733	function groupByLimit(collection, limit, iterator, callback) {
6734	callback = callback \|\| noop;
6735	var size, index, key, value, keys, iter, item, iterate;
6736	var sync = false;
6737	var started = 0;
6738	var completed = 0;
6739	var result = {};
6740
6741	if (isArray(collection)) {
6742	size = collection.length;
6743	iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
6744	} else if (!collection) {
6745	} else if (iteratorSymbol && collection[iteratorSymbol]) {
6746	size = Infinity;
6747	iter = collection[iteratorSymbol]();
6748	iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
6749	} else if (typeof collection === obj) {
6750	keys = nativeKeys(collection);
6751	size = keys.length;
6752	iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
6753	}
6754	if (!size \|\| isNaN(limit) \|\| limit < 1) {
6755	return callback(null, result);
6756	}
6757	timesSync(limit > size ? size : limit, iterate);
6758
6759	function arrayIterator() {
6760	if (started < size) {
6761	value = collection[started++];
6762	iterator(value, createCallback(value));
6763	}
6764	}
6765
6766	function arrayIteratorWithIndex() {
6767	index = started++;
6768	if (index < size) {
6769	value = collection[index];
6770	iterator(value, index, createCallback(value));
6771	}
6772	}
6773
6774	function symbolIterator() {
6775	item = iter.next();
6776	if (item.done === false) {
6777	started++;
6778	value = item.value;
6779	iterator(value, createCallback(value));
6780	} else if (completed === started && iterator !== noop) {
6781	iterator = noop;
6782	callback(null, result);
6783	}
6784	}
6785
6786	function symbolIteratorWithKey() {
6787	item = iter.next();
6788	if (item.done === false) {
6789	value = item.value;
6790	iterator(value, started++, createCallback(value));
6791	} else if (completed === started && iterator !== noop) {
6792	iterator = noop;
6793	callback(null, result);
6794	}
6795	}
6796
6797	function objectIterator() {
6798	if (started < size) {
6799	value = collection[keys[started++]];
6800	iterator(value, createCallback(value));
6801	}
6802	}
6803
6804	function objectIteratorWithKey() {
6805	if (started < size) {
6806	key = keys[started++];
6807	value = collection[key];
6808	iterator(value, key, createCallback(value));
6809	}
6810	}
6811
6812	function createCallback(value) {
6813	var called = false;
6814	return function(err, key) {
6815	if (called) {
6816	throwError();
6817	}
6818	called = true;
6819	if (err) {
6820	iterate = noop;
6821	callback = once(callback);
6822	callback(err, objectClone(result));
6823	return;
6824	}
6825	var array = result[key];
6826	if (!array) {
6827	result[key] = [value];
6828	} else {
6829	array.push(value);
6830	}
6831	if (++completed === size) {
6832	callback(null, result);
6833	} else if (sync) {
6834	nextTick(iterate);
6835	} else {
6836	sync = true;
6837	iterate();
6838	}
6839	sync = false;
6840	};
6841	}
6842	}
6843
6844	/**
6845	* @private
6846	* @param {Function} arrayEach
6847	* @param {Function} baseEach
6848	*/
6849	function createParallel(arrayEach, baseEach) {
6850	return function parallel(tasks, callback) {
6851	callback = callback \|\| noop;
6852	var size, keys, result;
6853	var completed = 0;
6854
6855	if (isArray(tasks)) {
6856	size = tasks.length;
6857	result = Array(size);
6858	arrayEach(tasks, createCallback);
6859	} else if (tasks && typeof tasks === obj) {
6860	keys = nativeKeys(tasks);
6861	size = keys.length;
6862	result = {};
6863	baseEach(tasks, createCallback, keys);
6864	}
6865	if (!size) {
6866	callback(null, result);
6867	}
6868
6869	function createCallback(key) {
6870	return function(err, res) {
6871	if (key === null) {
6872	throwError();
6873	}
6874	if (err) {
6875	key = null;
6876	callback = once(callback);
6877	callback(err, result);
6878	return;
6879	}
6880	result[key] = arguments.length <= 2 ? res : slice(arguments, 1);
6881	key = null;
6882	if (++completed === size) {
6883	callback(null, result);
6884	}
6885	};
6886	}
6887	};
6888	}
6889
6890	/**
6891	* @memberof async
6892	* @namespace series
6893	* @param {Array\|Object} tasks - functions
6894	* @param {Function} callback
6895	* @example
6896	*
6897	* var order = [];
6898	* var tasks = [
6899	* function(done) {
6900	* setTimeout(function() {
6901	* order.push(1);
6902	* done(null, 1);
6903	* }, 10);
6904	* },
6905	* function(done) {
6906	* setTimeout(function() {
6907	* order.push(2);
6908	* done(null, 2);
6909	* }, 30);
6910	* },
6911	* function(done) {
6912	* setTimeout(function() {
6913	* order.push(3);
6914	* done(null, 3);
6915	* }, 40);
6916	* },
6917	* function(done) {
6918	* setTimeout(function() {
6919	* order.push(4);
6920	* done(null, 4);
6921	* }, 20);
6922	* }
6923	* ];
6924	* async.series(tasks, function(err, res) {
6925	* console.log(res); // [1, 2, 3, 4];
6926	* console.log(order); // [1, 2, 3, 4]
6927	* });
6928	*
6929	* @example
6930	*
6931	* var order = [];
6932	* var tasks = {
6933	* 'a': function(done) {
6934	* setTimeout(function() {
6935	* order.push(1);
6936	* done(null, 1);
6937	* }, 10);
6938	* },
6939	* 'b': function(done) {
6940	* setTimeout(function() {
6941	* order.push(2);
6942	* done(null, 2);
6943	* }, 30);
6944	* },
6945	* 'c': function(done) {
6946	* setTimeout(function() {
6947	* order.push(3);
6948	* done(null, 3);
6949	* }, 40);
6950	* },
6951	* 'd': function(done) {
6952	* setTimeout(function() {
6953	* order.push(4);
6954	* done(null, 4);
6955	* }, 20);
6956	* }
6957	* };
6958	* async.series(tasks, function(err, res) {
6959	* console.log(res); // { a: 1, b: 2, c: 3, d:4 }
6960	* console.log(order); // [1, 4, 2, 3]
6961	* });
6962	*
6963	*/
6964	function series(tasks, callback) {
6965	callback = callback \|\| noop;
6966	var size, key, keys, result, iterate;
6967	var sync = false;
6968	var completed = 0;
6969
6970	if (isArray(tasks)) {
6971	size = tasks.length;
6972	result = Array(size);
6973	iterate = arrayIterator;
6974	} else if (tasks && typeof tasks === obj) {
6975	keys = nativeKeys(tasks);
6976	size = keys.length;
6977	result = {};
6978	iterate = objectIterator;
6979	} else {
6980	return callback(null);
6981	}
6982	if (!size) {
6983	return callback(null, result);
6984	}
6985	iterate();
6986
6987	function arrayIterator() {
6988	key = completed;
6989	tasks[completed](done);
6990	}
6991
6992	function objectIterator() {
6993	key = keys[completed];
6994	tasks[key](done);
6995	}
6996
6997	function done(err, res) {
6998	if (err) {
6999	iterate = throwError;
7000	callback = onlyOnce(callback);
7001	callback(err, result);
7002	return;
7003	}
7004	result[key] = arguments.length <= 2 ? res : slice(arguments, 1);
7005	if (++completed === size) {
7006	iterate = throwError;
7007	callback(null, result);
7008	} else if (sync) {
7009	nextTick(iterate);
7010	} else {
7011	sync = true;
7012	iterate();
7013	}
7014	sync = false;
7015	}
7016	}
7017
7018	/**
7019	* @memberof async
7020	* @namespace parallelLimit
7021	* @param {Array\|Object} tasks - functions
7022	* @param {number} limit - limit >= 1
7023	* @param {Function} callback
7024	* @example
7025	*
7026	* var order = [];
7027	* var tasks = [
7028	* function(done) {
7029	* setTimeout(function() {
7030	* order.push(1);
7031	* done(null, 1);
7032	* }, 10);
7033	* },
7034	* function(done) {
7035	* setTimeout(function() {
7036	* order.push(2);
7037	* done(null, 2);
7038	* }, 50);
7039	* },
7040	* function(done) {
7041	* setTimeout(function() {
7042	* order.push(3);
7043	* done(null, 3);
7044	* }, 30);
7045	* },
7046	* function(done) {
7047	* setTimeout(function() {
7048	* order.push(4);
7049	* done(null, 4);
7050	* }, 40);
7051	* }
7052	* ];
7053	* async.parallelLimit(tasks, 2, function(err, res) {
7054	* console.log(res); // [1, 2, 3, 4];
7055	* console.log(order); // [1, 3, 2, 4]
7056	* });
7057	*
7058	* @example
7059	*
7060	* var order = [];
7061	* var tasks = {
7062	* 'a': function(done) {
7063	* setTimeout(function() {
7064	* order.push(1);
7065	* done(null, 1);
7066	* }, 10);
7067	* },
7068	* 'b': function(done) {
7069	* setTimeout(function() {
7070	* order.push(2);
7071	* done(null, 2);
7072	* }, 50);
7073	* },
7074	* 'c': function(done) {
7075	* setTimeout(function() {
7076	* order.push(3);
7077	* done(null, 3);
7078	* }, 20);
7079	* },
7080	* 'd': function(done) {
7081	* setTimeout(function() {
7082	* order.push(4);
7083	* done(null, 4);
7084	* }, 40);
7085	* }
7086	* };
7087	* async.parallelLimit(tasks, 2, function(err, res) {
7088	* console.log(res); // { a: 1, b: 2, c: 3, d:4 }
7089	* console.log(order); // [1, 3, 2, 4]
7090	* });
7091	*
7092	*/
7093	function parallelLimit(tasks, limit, callback) {
7094	callback = callback \|\| noop;
7095	var size, index, key, keys, result, iterate;
7096	var sync = false;
7097	var started = 0;
7098	var completed = 0;
7099
7100	if (isArray(tasks)) {
7101	size = tasks.length;
7102	result = Array(size);
7103	iterate = arrayIterator;
7104	} else if (tasks && typeof tasks === obj) {
7105	keys = nativeKeys(tasks);
7106	size = keys.length;
7107	result = {};
7108	iterate = objectIterator;
7109	}
7110	if (!size \|\| isNaN(limit) \|\| limit < 1) {
7111	return callback(null, result);
7112	}
7113	timesSync(limit > size ? size : limit, iterate);
7114
7115	function arrayIterator() {
7116	index = started++;
7117	if (index < size) {
7118	tasks[index](createCallback(index));
7119	}
7120	}
7121
7122	function objectIterator() {
7123	if (started < size) {
7124	key = keys[started++];
7125	tasks[key](createCallback(key));
7126	}
7127	}
7128
7129	function createCallback(key) {
7130	return function(err, res) {
7131	if (key === null) {
7132	throwError();
7133	}
7134	if (err) {
7135	key = null;
7136	iterate = noop;
7137	callback = once(callback);
7138	callback(err, result);
7139	return;
7140	}
7141	result[key] = arguments.length <= 2 ? res : slice(arguments, 1);
7142	key = null;
7143	if (++completed === size) {
7144	callback(null, result);
7145	} else if (sync) {
7146	nextTick(iterate);
7147	} else {
7148	sync = true;
7149	iterate();
7150	}
7151	sync = false;
7152	};
7153	}
7154	}
7155
7156	/**
7157	* @memberof async
7158	* @namespace tryEach
7159	* @param {Array\|Object} tasks - functions
7160	* @param {Function} callback
7161	* @example
7162	*
7163	* var tasks = [
7164	* function(done) {
7165	* setTimeout(function() {
7166	* done(new Error('error'));
7167	* }, 10);
7168	* },
7169	* function(done) {
7170	* setTimeout(function() {
7171	* done(null, 2);
7172	* }, 10);
7173	* }
7174	* ];
7175	* async.tryEach(tasks, function(err, res) {
7176	* console.log(res); // 2
7177	* });
7178	*
7179	* @example
7180	*
7181	* var tasks = [
7182	* function(done) {
7183	* setTimeout(function() {
7184	* done(new Error('error1'));
7185	* }, 10);
7186	* },
7187	* function(done) {
7188	* setTimeout(function() {
7189	* done(new Error('error2');
7190	* }, 10);
7191	* }
7192	* ];
7193	* async.tryEach(tasks, function(err, res) {
7194	* console.log(err); // error2
7195	* console.log(res); // undefined
7196	* });
7197	*
7198	*/
7199	function tryEach(tasks, callback) {
7200	callback = callback \|\| noop;
7201	var size, keys, iterate;
7202	var sync = false;
7203	var completed = 0;
7204
7205	if (isArray(tasks)) {
7206	size = tasks.length;
7207	iterate = arrayIterator;
7208	} else if (tasks && typeof tasks === obj) {
7209	keys = nativeKeys(tasks);
7210	size = keys.length;
7211	iterate = objectIterator;
7212	}
7213	if (!size) {
7214	return callback(null);
7215	}
7216	iterate();
7217
7218	function arrayIterator() {
7219	tasks[completed](done);
7220	}
7221
7222	function objectIterator() {
7223	tasks[keys[completed]](done);
7224	}
7225
7226	function done(err, res) {
7227	if (!err) {
7228	if (arguments.length <= 2) {
7229	callback(null, res);
7230	} else {
7231	callback(null, slice(arguments, 1));
7232	}
7233	} else if (++completed === size) {
7234	callback(err);
7235	} else {
7236	sync = true;
7237	iterate();
7238	}
7239	sync = false;
7240	}
7241	}
7242
7243	/**
7244	* check for waterfall tasks
7245	* @private
7246	* @param {Array} tasks
7247	* @param {Function} callback
7248	* @return {boolean}
7249	*/
7250	function checkWaterfallTasks(tasks, callback) {
7251	if (!isArray(tasks)) {
7252	callback(new Error('First argument to waterfall must be an array of functions'));
7253	return false;
7254	}
7255	if (tasks.length === 0) {
7256	callback(null);
7257	return false;
7258	}
7259	return true;
7260	}
7261
7262	/**
7263	* check for waterfall tasks
7264	* @private
7265	* @param {function} func
7266	* @param {Array\|Object} args - arguments
7267	* @return {function} next
7268	*/
7269	function waterfallIterator(func, args, next) {
7270	switch (args.length) {
7271	case 0:
7272	case 1:
7273	return func(next);
7274	case 2:
7275	return func(args[1], next);
7276	case 3:
7277	return func(args[1], args[2], next);
7278	case 4:
7279	return func(args[1], args[2], args[3], next);
7280	case 5:
7281	return func(args[1], args[2], args[3], args[4], next);
7282	case 6:
7283	return func(args[1], args[2], args[3], args[4], args[5], next);
7284	default:
7285	args = slice(args, 1);
7286	args.push(next);
7287	return func.apply(null, args);
7288	}
7289	}
7290
7291	/**
7292	* @memberof async
7293	* @namespace waterfall
7294	* @param {Array} tasks - functions
7295	* @param {Function} callback
7296	* @example
7297	*
7298	* var order = [];
7299	* var tasks = [
7300	* function(next) {
7301	* setTimeout(function() {
7302	* order.push(1);
7303	* next(null, 1);
7304	* }, 10);
7305	* },
7306	* function(arg1, next) {
7307	* setTimeout(function() {
7308	* order.push(2);
7309	* next(null, 1, 2);
7310	* }, 30);
7311	* },
7312	* function(arg1, arg2, next) {
7313	* setTimeout(function() {
7314	* order.push(3);
7315	* next(null, 3);
7316	* }, 20);
7317	* },
7318	* function(arg1, next) {
7319	* setTimeout(function() {
7320	* order.push(4);
7321	* next(null, 1, 2, 3, 4);
7322	* }, 40);
7323	* }
7324	* ];
7325	* async.waterfall(tasks, function(err, arg1, arg2, arg3, arg4) {
7326	* console.log(arg1, arg2, arg3, arg4); // 1 2 3 4
7327	* });
7328	*
7329	*/
7330	function waterfall(tasks, callback) {
7331	callback = callback \|\| noop;
7332	if (!checkWaterfallTasks(tasks, callback)) {
7333	return;
7334	}
7335	var func, args, done, sync;
7336	var completed = 0;
7337	var size = tasks.length;
7338	waterfallIterator(tasks[0], [], createCallback(0));
7339
7340	function iterate() {
7341	waterfallIterator(func, args, createCallback(func));
7342	}
7343
7344	function createCallback(index) {
7345	return function next(err, res) {
7346	if (index === undefined) {
7347	callback = noop;
7348	throwError();
7349	}
7350	index = undefined;
7351	if (err) {
7352	done = callback;
7353	callback = throwError;
7354	done(err);
7355	return;
7356	}
7357	if (++completed === size) {
7358	done = callback;
7359	callback = throwError;
7360	if (arguments.length <= 2) {
7361	done(err, res);
7362	} else {
7363	done.apply(null, createArray(arguments));
7364	}
7365	return;
7366	}
7367	if (sync) {
7368	args = arguments;
7369	func = tasks[completed] \|\| throwError;
7370	nextTick(iterate);
7371	} else {
7372	sync = true;
7373	waterfallIterator(tasks[completed] \|\| throwError, arguments, createCallback(completed));
7374	}
7375	sync = false;
7376	};
7377	}
7378	}
7379
7380	/**
7381	* `angelFall` is like `waterfall` and inject callback to last argument of next task.
7382	*
7383	* @memberof async
7384	* @namespace angelFall
7385	* @param {Array} tasks - functions
7386	* @param {Function} callback
7387	* @example
7388	*
7389	* var order = [];
7390	* var tasks = [
7391	* function(next) {
7392	* setTimeout(function() {
7393	* order.push(1);
7394	* next(null, 1);
7395	* }, 10);
7396	* },
7397	* function(arg1, empty, next) {
7398	* setTimeout(function() {
7399	* order.push(2);
7400	* next(null, 1, 2);
7401	* }, 30);
7402	* },
7403	* function(next) {
7404	* setTimeout(function() {
7405	* order.push(3);
7406	* next(null, 3);
7407	* }, 20);
7408	* },
7409	* function(arg1, empty1, empty2, empty3, next) {
7410	* setTimeout(function() {
7411	* order.push(4);
7412	* next(null, 1, 2, 3, 4);
7413	* }, 40);
7414	* }
7415	* ];
7416	* async.angelFall(tasks, function(err, arg1, arg2, arg3, arg4) {
7417	* console.log(arg1, arg2, arg3, arg4); // 1 2 3 4
7418	* });
7419	*
7420	*/
7421	function angelFall(tasks, callback) {
7422	callback = callback \|\| noop;
7423	if (!checkWaterfallTasks(tasks, callback)) {
7424	return;
7425	}
7426	var completed = 0;
7427	var sync = false;
7428	var size = tasks.length;
7429	var func = tasks[completed];
7430	var args = [];
7431	var iterate = function() {
7432	switch (func.length) {
7433	case 0:
7434	try {
7435	next(null, func());
7436	} catch (e) {
7437	next(e);
7438	}
7439	return;
7440	case 1:
7441	return func(next);
7442	case 2:
7443	return func(args[1], next);
7444	case 3:
7445	return func(args[1], args[2], next);
7446	case 4:
7447	return func(args[1], args[2], args[3], next);
7448	case 5:
7449	return func(args[1], args[2], args[3], args[4], next);
7450	default:
7451	args = slice(args, 1);
7452	args[func.length - 1] = next;
7453	return func.apply(null, args);
7454	}
7455	};
7456	iterate();
7457
7458	function next(err, res) {
7459	if (err) {
7460	iterate = throwError;
7461	callback = onlyOnce(callback);
7462	callback(err);
7463	return;
7464	}
7465	if (++completed === size) {
7466	iterate = throwError;
7467	var done = callback;
7468	callback = throwError;
7469	if (arguments.length === 2) {
7470	done(err, res);
7471	} else {
7472	done.apply(null, createArray(arguments));
7473	}
7474	return;
7475	}
7476	func = tasks[completed];
7477	args = arguments;
7478	if (sync) {
7479	nextTick(iterate);
7480	} else {
7481	sync = true;
7482	iterate();
7483	}
7484	sync = false;
7485	}
7486	}
7487
7488	/**
7489	* @memberof async
7490	* @namespace whilst
7491	* @param {Function} test
7492	* @param {Function} iterator
7493	* @param {Function} callback
7494	*/
7495	function whilst(test, iterator, callback) {
7496	callback = callback \|\| noop;
7497	var sync = false;
7498	if (test()) {
7499	iterate();
7500	} else {
7501	callback(null);
7502	}
7503
7504	function iterate() {
7505	if (sync) {
7506	nextTick(next);
7507	} else {
7508	sync = true;
7509	iterator(done);
7510	}
7511	sync = false;
7512	}
7513
7514	function next() {
7515	iterator(done);
7516	}
7517
7518	function done(err, arg) {
7519	if (err) {
7520	return callback(err);
7521	}
7522	if (arguments.length <= 2) {
7523	if (test(arg)) {
7524	iterate();
7525	} else {
7526	callback(null, arg);
7527	}
7528	return;
7529	}
7530	arg = slice(arguments, 1);
7531	if (test.apply(null, arg)) {
7532	iterate();
7533	} else {
7534	callback.apply(null, [null].concat(arg));
7535	}
7536	}
7537	}
7538
7539	/**
7540	* @memberof async
7541	* @namespace doWhilst
7542	* @param {Function} iterator
7543	* @param {Function} test
7544	* @param {Function} callback
7545	*/
7546	function doWhilst(iterator, test, callback) {
7547	callback = callback \|\| noop;
7548	var sync = false;
7549	next();
7550
7551	function iterate() {
7552	if (sync) {
7553	nextTick(next);
7554	} else {
7555	sync = true;
7556	iterator(done);
7557	}
7558	sync = false;
7559	}
7560
7561	function next() {
7562	iterator(done);
7563	}
7564
7565	function done(err, arg) {
7566	if (err) {
7567	return callback(err);
7568	}
7569	if (arguments.length <= 2) {
7570	if (test(arg)) {
7571	iterate();
7572	} else {
7573	callback(null, arg);
7574	}
7575	return;
7576	}
7577	arg = slice(arguments, 1);
7578	if (test.apply(null, arg)) {
7579	iterate();
7580	} else {
7581	callback.apply(null, [null].concat(arg));
7582	}
7583	}
7584	}
7585
7586	/**
7587	* @memberof async
7588	* @namespace until
7589	* @param {Function} test
7590	* @param {Function} iterator
7591	* @param {Function} callback
7592	*/
7593	function until(test, iterator, callback) {
7594	callback = callback \|\| noop;
7595	var sync = false;
7596	if (!test()) {
7597	iterate();
7598	} else {
7599	callback(null);
7600	}
7601
7602	function iterate() {
7603	if (sync) {
7604	nextTick(next);
7605	} else {
7606	sync = true;
7607	iterator(done);
7608	}
7609	sync = false;
7610	}
7611
7612	function next() {
7613	iterator(done);
7614	}
7615
7616	function done(err, arg) {
7617	if (err) {
7618	return callback(err);
7619	}
7620	if (arguments.length <= 2) {
7621	if (!test(arg)) {
7622	iterate();
7623	} else {
7624	callback(null, arg);
7625	}
7626	return;
7627	}
7628	arg = slice(arguments, 1);
7629	if (!test.apply(null, arg)) {
7630	iterate();
7631	} else {
7632	callback.apply(null, [null].concat(arg));
7633	}
7634	}
7635	}
7636
7637	/**
7638	* @memberof async
7639	* @namespace doUntil
7640	* @param {Function} iterator
7641	* @param {Function} test
7642	* @param {Function} callback
7643	*/
7644	function doUntil(iterator, test, callback) {
7645	callback = callback \|\| noop;
7646	var sync = false;
7647	next();
7648
7649	function iterate() {
7650	if (sync) {
7651	nextTick(next);
7652	} else {
7653	sync = true;
7654	iterator(done);
7655	}
7656	sync = false;
7657	}
7658
7659	function next() {
7660	iterator(done);
7661	}
7662
7663	function done(err, arg) {
7664	if (err) {
7665	return callback(err);
7666	}
7667	if (arguments.length <= 2) {
7668	if (!test(arg)) {
7669	iterate();
7670	} else {
7671	callback(null, arg);
7672	}
7673	return;
7674	}
7675	arg = slice(arguments, 1);
7676	if (!test.apply(null, arg)) {
7677	iterate();
7678	} else {
7679	callback.apply(null, [null].concat(arg));
7680	}
7681	}
7682	}
7683
7684	/**
7685	* @memberof async
7686	* @namespace during
7687	* @param {Function} test
7688	* @param {Function} iterator
7689	* @param {Function} callback
7690	*/
7691	function during(test, iterator, callback) {
7692	callback = callback \|\| noop;
7693	_test();
7694
7695	function _test() {
7696	test(iterate);
7697	}
7698
7699	function iterate(err, truth) {
7700	if (err) {
7701	return callback(err);
7702	}
7703	if (truth) {
7704	iterator(done);
7705	} else {
7706	callback(null);
7707	}
7708	}
7709
7710	function done(err) {
7711	if (err) {
7712	return callback(err);
7713	}
7714	_test();
7715	}
7716	}
7717
7718	/**
7719	* @memberof async
7720	* @namespace doDuring
7721	* @param {Function} test
7722	* @param {Function} iterator
7723	* @param {Function} callback
7724	*/
7725	function doDuring(iterator, test, callback) {
7726	callback = callback \|\| noop;
7727	iterate(null, true);
7728
7729	function iterate(err, truth) {
7730	if (err) {
7731	return callback(err);
7732	}
7733	if (truth) {
7734	iterator(done);
7735	} else {
7736	callback(null);
7737	}
7738	}
7739
7740	function done(err, res) {
7741	if (err) {
7742	return callback(err);
7743	}
7744	switch (arguments.length) {
7745	case 0:
7746	case 1:
7747	test(iterate);
7748	break;
7749	case 2:
7750	test(res, iterate);
7751	break;
7752	default:
7753	var args = slice(arguments, 1);
7754	args.push(iterate);
7755	test.apply(null, args);
7756	break;
7757	}
7758	}
7759	}
7760
7761	/**
7762	* @memberof async
7763	* @namespace forever
7764	*/
7765	function forever(iterator, callback) {
7766	var sync = false;
7767	iterate();
7768
7769	function iterate() {
7770	iterator(next);
7771	}
7772
7773	function next(err) {
7774	if (err) {
7775	if (callback) {
7776	return callback(err);
7777	}
7778	throw err;
7779	}
7780	if (sync) {
7781	nextTick(iterate);
7782	} else {
7783	sync = true;
7784	iterate();
7785	}
7786	sync = false;
7787	}
7788	}
7789
7790	/**
7791	* @memberof async
7792	* @namespace compose
7793	*/
7794	function compose() {
7795	return seq.apply(null, reverse(arguments));
7796	}
7797
7798	/**
7799	* @memberof async
7800	* @namespace seq
7801	*/
7802	function seq(/* functions... */) {
7803	var fns = createArray(arguments);
7804
7805	return function() {
7806	var self = this;
7807	var args = createArray(arguments);
7808	var callback = args[args.length - 1];
7809	if (typeof callback === func) {
7810	args.pop();
7811	} else {
7812	callback = noop;
7813	}
7814	reduce(fns, args, iterator, done);
7815
7816	function iterator(newargs, fn, callback) {
7817	var func = function(err) {
7818	var nextargs = slice(arguments, 1);
7819	callback(err, nextargs);
7820	};
7821	newargs.push(func);
7822	fn.apply(self, newargs);
7823	}
7824
7825	function done(err, res) {
7826	res = isArray(res) ? res : [res];
7827	res.unshift(err);
7828	callback.apply(self, res);
7829	}
7830	};
7831	}
7832
7833	function createApplyEach(func) {
7834	return function applyEach(fns /* arguments */) {
7835	var go = function() {
7836	var self = this;
7837	var args = createArray(arguments);
7838	var callback = args.pop() \|\| noop;
7839	return func(fns, iterator, callback);
7840
7841	function iterator(fn, done) {
7842	fn.apply(self, args.concat([done]));
7843	}
7844	};
7845	if (arguments.length > 1) {
7846	var args = slice(arguments, 1);
7847	return go.apply(this, args);
7848	} else {
7849	return go;
7850	}
7851	};
7852	}
7853
7854	/**
7855	* @see https://github.com/caolan/async/blob/master/lib/internal/DoublyLinkedList.js
7856	*/
7857	function DLL() {
7858	this.head = null;
7859	this.tail = null;
7860	this.length = 0;
7861	}
7862
7863	DLL.prototype._removeLink = function(node) {
7864	var prev = node.prev;
7865	var next = node.next;
7866	if (prev) {
7867	prev.next = next;
7868	} else {
7869	this.head = next;
7870	}
7871	if (next) {
7872	next.prev = prev;
7873	} else {
7874	this.tail = prev;
7875	}
7876	node.prev = null;
7877	node.next = null;
7878	this.length--;
7879	return node;
7880	};
7881
7882	DLL.prototype.empty = DLL;
7883
7884	DLL.prototype._setInitial = function(node) {
7885	this.length = 1;
7886	this.head = this.tail = node;
7887	};
7888
7889	DLL.prototype.insertBefore = function(node, newNode) {
7890	newNode.prev = node.prev;
7891	newNode.next = node;
7892	if (node.prev) {
7893	node.prev.next = newNode;
7894	} else {
7895	this.head = newNode;
7896	}
7897	node.prev = newNode;
7898	this.length++;
7899	};
7900
7901	DLL.prototype.unshift = function(node) {
7902	if (this.head) {
7903	this.insertBefore(this.head, node);
7904	} else {
7905	this._setInitial(node);
7906	}
7907	};
7908
7909	DLL.prototype.push = function(node) {
7910	var tail = this.tail;
7911	if (tail) {
7912	node.prev = tail;
7913	node.next = tail.next;
7914	this.tail = node;
7915	tail.next = node;
7916	this.length++;
7917	} else {
7918	this._setInitial(node);
7919	}
7920	};
7921
7922	DLL.prototype.shift = function() {
7923	return this.head && this._removeLink(this.head);
7924	};
7925
7926	DLL.prototype.splice = function(end) {
7927	var task;
7928	var tasks = [];
7929	while (end-- && (task = this.shift())) {
7930	tasks.push(task);
7931	}
7932	return tasks;
7933	};
7934
7935	DLL.prototype.remove = function(test) {
7936	var node = this.head;
7937	while (node) {
7938	if (test(node)) {
7939	this._removeLink(node);
7940	}
7941	node = node.next;
7942	}
7943	return this;
7944	};
7945
7946	/**
7947	* @private
7948	*/
7949	function baseQueue(isQueue, worker, concurrency, payload) {
7950	if (concurrency === undefined) {
7951	concurrency = 1;
7952	} else if (isNaN(concurrency) \|\| concurrency < 1) {
7953	throw new Error('Concurrency must not be zero');
7954	}
7955
7956	var workers = 0;
7957	var workersList = [];
7958	var _callback, _unshift;
7959
7960	var q = {
7961	_tasks: new DLL(),
7962	concurrency: concurrency,
7963	payload: payload,
7964	saturated: noop,
7965	unsaturated: noop,
7966	buffer: concurrency / 4,
7967	empty: noop,
7968	drain: noop,
7969	error: noop,
7970	started: false,
7971	paused: false,
7972	push: push,
7973	kill: kill,
7974	unshift: unshift,
7975	remove: remove,
7976	process: isQueue ? runQueue : runCargo,
7977	length: getLength,
7978	running: running,
7979	workersList: getWorkersList,
7980	idle: idle,
7981	pause: pause,
7982	resume: resume,
7983	_worker: worker
7984	};
7985	return q;
7986
7987	function push(tasks, callback) {
7988	_insert(tasks, callback);
7989	}
7990
7991	function unshift(tasks, callback) {
7992	_insert(tasks, callback, true);
7993	}
7994
7995	function _exec(task) {
7996	var item = {
7997	data: task,
7998	callback: _callback
7999	};
8000	if (_unshift) {
8001	q._tasks.unshift(item);
8002	} else {
8003	q._tasks.push(item);
8004	}
8005	nextTick(q.process);
8006	}
8007
8008	function _insert(tasks, callback, unshift) {
8009	if (callback == null) {
8010	callback = noop;
8011	} else if (typeof callback !== 'function') {
8012	throw new Error('task callback must be a function');
8013	}
8014	q.started = true;
8015	var _tasks = isArray(tasks) ? tasks : [tasks];
8016
8017	if (tasks === undefined \|\| !_tasks.length) {
8018	if (q.idle()) {
8019	nextTick(q.drain);
8020	}
8021	return;
8022	}
8023
8024	_unshift = unshift;
8025	_callback = callback;
8026	arrayEachSync(_tasks, _exec);
8027	// Avoid leaking the callback
8028	_callback = undefined;
8029	}
8030
8031	function kill() {
8032	q.drain = noop;
8033	q._tasks.empty();
8034	}
8035
8036	function _next(q, tasks) {
8037	var called = false;
8038	return function done(err, res) {
8039	if (called) {
8040	throwError();
8041	}
8042	called = true;
8043
8044	workers--;
8045	var task;
8046	var index = -1;
8047	var size = workersList.length;
8048	var taskIndex = -1;
8049	var taskSize = tasks.length;
8050	var useApply = arguments.length > 2;
8051	var args = useApply && createArray(arguments);
8052	while (++taskIndex < taskSize) {
8053	task = tasks[taskIndex];
8054	while (++index < size) {
8055	if (workersList[index] === task) {
8056	if (index === 0) {
8057	workersList.shift();
8058	} else {
8059	workersList.splice(index, 1);
8060	}
8061	index = size;
8062	size--;
8063	}
8064	}
8065	index = -1;
8066	if (useApply) {
8067	task.callback.apply(task, args);
8068	} else {
8069	task.callback(err, res);
8070	}
8071	if (err) {
8072	q.error(err, task.data);
8073	}
8074	}
8075
8076	if (workers <= q.concurrency - q.buffer) {
8077	q.unsaturated();
8078	}
8079
8080	if (q._tasks.length + workers === 0) {
8081	q.drain();
8082	}
8083	q.process();
8084	};
8085	}
8086
8087	function runQueue() {
8088	while (!q.paused && workers < q.concurrency && q._tasks.length) {
8089	var task = q._tasks.shift();
8090	workers++;
8091	workersList.push(task);
8092	if (q._tasks.length === 0) {
8093	q.empty();
8094	}
8095	if (workers === q.concurrency) {
8096	q.saturated();
8097	}
8098	var done = _next(q, [task]);
8099	worker(task.data, done);
8100	}
8101	}
8102
8103	function runCargo() {
8104	while (!q.paused && workers < q.concurrency && q._tasks.length) {
8105	var tasks = q._tasks.splice(q.payload \|\| q._tasks.length);
8106	var index = -1;
8107	var size = tasks.length;
8108	var data = Array(size);
8109	while (++index < size) {
8110	data[index] = tasks[index].data;
8111	}
8112	workers++;
8113	nativePush.apply(workersList, tasks);
8114	if (q._tasks.length === 0) {
8115	q.empty();
8116	}
8117	if (workers === q.concurrency) {
8118	q.saturated();
8119	}
8120	var done = _next(q, tasks);
8121	worker(data, done);
8122	}
8123	}
8124
8125	function getLength() {
8126	return q._tasks.length;
8127	}
8128
8129	function running() {
8130	return workers;
8131	}
8132
8133	function getWorkersList() {
8134	return workersList;
8135	}
8136
8137	function idle() {
8138	return q.length() + workers === 0;
8139	}
8140
8141	function pause() {
8142	q.paused = true;
8143	}
8144
8145	function _resume() {
8146	nextTick(q.process);
8147	}
8148
8149	function resume() {
8150	if (q.paused === false) {
8151	return;
8152	}
8153	q.paused = false;
8154	var count = q.concurrency < q._tasks.length ? q.concurrency : q._tasks.length;
8155	timesSync(count, _resume);
8156	}
8157
8158	/**
8159	* @param {Function} test
8160	*/
8161	function remove(test) {
8162	q._tasks.remove(test);
8163	}
8164	}
8165
8166	/**
8167	* @memberof async
8168	* @namespace queue
8169	*/
8170	function queue(worker, concurrency) {
8171	return baseQueue(true, worker, concurrency);
8172	}
8173
8174	/**
8175	* @memberof async
8176	* @namespace priorityQueue
8177	*/
8178	function priorityQueue(worker, concurrency) {
8179	var q = baseQueue(true, worker, concurrency);
8180	q.push = push;
8181	delete q.unshift;
8182	return q;
8183
8184	function push(tasks, priority, callback) {
8185	q.started = true;
8186	priority = priority \|\| 0;
8187	var _tasks = isArray(tasks) ? tasks : [tasks];
8188	var taskSize = _tasks.length;
8189
8190	if (tasks === undefined \|\| taskSize === 0) {
8191	if (q.idle()) {
8192	nextTick(q.drain);
8193	}
8194	return;
8195	}
8196
8197	callback = typeof callback === func ? callback : noop;
8198	var nextNode = q._tasks.head;
8199	while (nextNode && priority >= nextNode.priority) {
8200	nextNode = nextNode.next;
8201	}
8202	while (taskSize--) {
8203	var item = {
8204	data: _tasks[taskSize],
8205	priority: priority,
8206	callback: callback
8207	};
8208	if (nextNode) {
8209	q._tasks.insertBefore(nextNode, item);
8210	} else {
8211	q._tasks.push(item);
8212	}
8213	nextTick(q.process);
8214	}
8215	}
8216	}
8217
8218	/**
8219	* @memberof async
8220	* @namespace cargo
8221	*/
8222	function cargo(worker, payload) {
8223	return baseQueue(false, worker, 1, payload);
8224	}
8225
8226	/**
8227	* @memberof async
8228	* @namespace auto
8229	* @param {Object} tasks
8230	* @param {number} [concurrency]
8231	* @param {Function} [callback]
8232	*/
8233	function auto(tasks, concurrency, callback) {
8234	if (typeof concurrency === func) {
8235	callback = concurrency;
8236	concurrency = null;
8237	}
8238	var keys = nativeKeys(tasks);
8239	var rest = keys.length;
8240	var results = {};
8241	if (rest === 0) {
8242	return callback(null, results);
8243	}
8244	var runningTasks = 0;
8245	var readyTasks = new DLL();
8246	var listeners = Object.create(null);
8247	callback = onlyOnce(callback \|\| noop);
8248	concurrency = concurrency \|\| rest;
8249
8250	baseEachSync(tasks, iterator, keys);
8251	proceedQueue();
8252
8253	function iterator(task, key) {
8254	// no dependencies
8255	var _task, _taskSize;
8256	if (!isArray(task)) {
8257	_task = task;
8258	_taskSize = 0;
8259	readyTasks.push([_task, _taskSize, done]);
8260	return;
8261	}
8262	var dependencySize = task.length - 1;
8263	_task = task[dependencySize];
8264	_taskSize = dependencySize;
8265	if (dependencySize === 0) {
8266	readyTasks.push([_task, _taskSize, done]);
8267	return;
8268	}
8269	// dependencies
8270	var index = -1;
8271	while (++index < dependencySize) {
8272	var dependencyName = task[index];
8273	if (notInclude(keys, dependencyName)) {
8274	var msg =
8275	'async.auto task `' +
8276	key +
8277	'` has non-existent dependency `' +
8278	dependencyName +
8279	'` in ' +
8280	task.join(', ');
8281	throw new Error(msg);
8282	}
8283	var taskListeners = listeners[dependencyName];
8284	if (!taskListeners) {
8285	taskListeners = listeners[dependencyName] = [];
8286	}
8287	taskListeners.push(taskListener);
8288	}
8289
8290	function done(err, arg) {
8291	if (key === null) {
8292	throwError();
8293	}
8294	arg = arguments.length <= 2 ? arg : slice(arguments, 1);
8295	if (err) {
8296	rest = 0;
8297	runningTasks = 0;
8298	readyTasks.length = 0;
8299	var safeResults = objectClone(results);
8300	safeResults[key] = arg;
8301	key = null;
8302	var _callback = callback;
8303	callback = noop;
8304	_callback(err, safeResults);
8305	return;
8306	}
8307	runningTasks--;
8308	rest--;
8309	results[key] = arg;
8310	taskComplete(key);
8311	key = null;
8312	}
8313
8314	function taskListener() {
8315	if (--dependencySize === 0) {
8316	readyTasks.push([_task, _taskSize, done]);
8317	}
8318	}
8319	}
8320
8321	function proceedQueue() {
8322	if (readyTasks.length === 0 && runningTasks === 0) {
8323	if (rest !== 0) {
8324	throw new Error('async.auto task has cyclic dependencies');
8325	}
8326	return callback(null, results);
8327	}
8328	while (readyTasks.length && runningTasks < concurrency && callback !== noop) {
8329	runningTasks++;
8330	var array = readyTasks.shift();
8331	if (array[1] === 0) {
8332	array[0](array[2]);
8333	} else {
8334	array[0](results, array[2]);
8335	}
8336	}
8337	}
8338
8339	function taskComplete(key) {
8340	var taskListeners = listeners[key] \|\| [];
8341	arrayEachSync(taskListeners, function(task) {
8342	task();
8343	});
8344	proceedQueue();
8345	}
8346	}
8347
8348	var FN_ARGS = /^(function)?\s[^\(]\(\s([^\)])\)/m;
8349	var FN_ARG_SPLIT = /,/;
8350	var FN_ARG = /(=.+)?(\s*)$/;
8351	var STRIP_COMMENTS = /((\/\/.$)\|(\/\[\s\S]?\\/))/gm;
8352
8353	/**
8354	* parse function arguments for `autoInject`
8355	*
8356	* @private
8357	*/
8358	function parseParams(func) {
8359	func = func.toString().replace(STRIP_COMMENTS, '');
8360	func = func.match(FN_ARGS)[2].replace(' ', '');
8361	func = func ? func.split(FN_ARG_SPLIT) : [];
8362	func = func.map(function(arg) {
8363	return arg.replace(FN_ARG, '').trim();
8364	});
8365	return func;
8366	}
8367
8368	/**
8369	* @memberof async
8370	* @namespace autoInject
8371	* @param {Object} tasks
8372	* @param {number} [concurrency]
8373	* @param {Function} [callback]
8374	*/
8375	function autoInject(tasks, concurrency, callback) {
8376	var newTasks = {};
8377	baseEachSync(tasks, iterator, nativeKeys(tasks));
8378	auto(newTasks, concurrency, callback);
8379
8380	function iterator(task, key) {
8381	var params;
8382	var taskLength = task.length;
8383
8384	if (isArray(task)) {
8385	if (taskLength === 0) {
8386	throw new Error('autoInject task functions require explicit parameters.');
8387	}
8388	params = createArray(task);
8389	taskLength = params.length - 1;
8390	task = params[taskLength];
8391	if (taskLength === 0) {
8392	newTasks[key] = task;
8393	return;
8394	}
8395	} else if (taskLength === 1) {
8396	newTasks[key] = task;
8397	return;
8398	} else {
8399	params = parseParams(task);
8400	if (taskLength === 0 && params.length === 0) {
8401	throw new Error('autoInject task functions require explicit parameters.');
8402	}
8403	taskLength = params.length - 1;
8404	}
8405	params[taskLength] = newTask;
8406	newTasks[key] = params;
8407
8408	function newTask(results, done) {
8409	switch (taskLength) {
8410	case 1:
8411	task(results[params[0]], done);
8412	break;
8413	case 2:
8414	task(results[params[0]], results[params[1]], done);
8415	break;
8416	case 3:
8417	task(results[params[0]], results[params[1]], results[params[2]], done);
8418	break;
8419	default:
8420	var i = -1;
8421	while (++i < taskLength) {
8422	params[i] = results[params[i]];
8423	}
8424	params[i] = done;
8425	task.apply(null, params);
8426	break;
8427	}
8428	}
8429	}
8430	}
8431
8432	/**
8433	* @memberof async
8434	* @namespace retry
8435	* @param {integer\|Object\|Function} opts
8436	* @param {Function} [task]
8437	* @param {Function} [callback]
8438	*/
8439	function retry(opts, task, callback) {
8440	var times, intervalFunc, errorFilter;
8441	var count = 0;
8442	if (arguments.length < 3 && typeof opts === func) {
8443	callback = task \|\| noop;
8444	task = opts;
8445	opts = null;
8446	times = DEFAULT_TIMES;
8447	} else {
8448	callback = callback \|\| noop;
8449	switch (typeof opts) {
8450	case 'object':
8451	if (typeof opts.errorFilter === func) {
8452	errorFilter = opts.errorFilter;
8453	}
8454	var interval = opts.interval;
8455	switch (typeof interval) {
8456	case func:
8457	intervalFunc = interval;
8458	break;
8459	case 'string':
8460	case 'number':
8461	interval = +interval;
8462	intervalFunc = interval
8463	? function() {
8464	return interval;
8465	}
8466	: function() {
8467	return DEFAULT_INTERVAL;
8468	};
8469	break;
8470	}
8471	times = +opts.times \|\| DEFAULT_TIMES;
8472	break;
8473	case 'number':
8474	times = opts \|\| DEFAULT_TIMES;
8475	break;
8476	case 'string':
8477	times = +opts \|\| DEFAULT_TIMES;
8478	break;
8479	default:
8480	throw new Error('Invalid arguments for async.retry');
8481	}
8482	}
8483	if (typeof task !== 'function') {
8484	throw new Error('Invalid arguments for async.retry');
8485	}
8486
8487	if (intervalFunc) {
8488	task(intervalCallback);
8489	} else {
8490	task(simpleCallback);
8491	}
8492
8493	function simpleIterator() {
8494	task(simpleCallback);
8495	}
8496
8497	function simpleCallback(err, res) {
8498	if (++count === times \|\| !err \|\| (errorFilter && !errorFilter(err))) {
8499	if (arguments.length <= 2) {
8500	return callback(err, res);
8501	}
8502	var args = createArray(arguments);
8503	return callback.apply(null, args);
8504	}
8505	simpleIterator();
8506	}
8507
8508	function intervalIterator() {
8509	task(intervalCallback);
8510	}
8511
8512	function intervalCallback(err, res) {
8513	if (++count === times \|\| !err \|\| (errorFilter && !errorFilter(err))) {
8514	if (arguments.length <= 2) {
8515	return callback(err, res);
8516	}
8517	var args = createArray(arguments);
8518	return callback.apply(null, args);
8519	}
8520	setTimeout(intervalIterator, intervalFunc(count));
8521	}
8522	}
8523
8524	function retryable(opts, task) {
8525	if (!task) {
8526	task = opts;
8527	opts = null;
8528	}
8529	return done;
8530
8531	function done() {
8532	var taskFn;
8533	var args = createArray(arguments);
8534	var lastIndex = args.length - 1;
8535	var callback = args[lastIndex];
8536	switch (task.length) {
8537	case 1:
8538	taskFn = task1;
8539	break;
8540	case 2:
8541	taskFn = task2;
8542	break;
8543	case 3:
8544	taskFn = task3;
8545	break;
8546	default:
8547	taskFn = task4;
8548	}
8549	if (opts) {
8550	retry(opts, taskFn, callback);
8551	} else {
8552	retry(taskFn, callback);
8553	}
8554
8555	function task1(done) {
8556	task(done);
8557	}
8558
8559	function task2(done) {
8560	task(args[0], done);
8561	}
8562
8563	function task3(done) {
8564	task(args[0], args[1], done);
8565	}
8566
8567	function task4(callback) {
8568	args[lastIndex] = callback;
8569	task.apply(null, args);
8570	}
8571	}
8572	}
8573
8574	/**
8575	* @memberof async
8576	* @namespace iterator
8577	*/
8578	function iterator(tasks) {
8579	var size = 0;
8580	var keys = [];
8581	if (isArray(tasks)) {
8582	size = tasks.length;
8583	} else {
8584	keys = nativeKeys(tasks);
8585	size = keys.length;
8586	}
8587	return makeCallback(0);
8588
8589	function makeCallback(index) {
8590	var fn = function() {
8591	if (size) {
8592	var key = keys[index] \|\| index;
8593	tasks[key].apply(null, createArray(arguments));
8594	}
8595	return fn.next();
8596	};
8597	fn.next = function() {
8598	return index < size - 1 ? makeCallback(index + 1) : null;
8599	};
8600	return fn;
8601	}
8602	}
8603
8604	/**
8605	* @memberof async
8606	* @namespace apply
8607	*/
8608	function apply(func) {
8609	switch (arguments.length) {
8610	case 0:
8611	case 1:
8612	return func;
8613	case 2:
8614	return func.bind(null, arguments[1]);
8615	case 3:
8616	return func.bind(null, arguments[1], arguments[2]);
8617	case 4:
8618	return func.bind(null, arguments[1], arguments[2], arguments[3]);
8619	case 5:
8620	return func.bind(null, arguments[1], arguments[2], arguments[3], arguments[4]);
8621	default:
8622	var size = arguments.length;
8623	var index = 0;
8624	var args = Array(size);
8625	args[index] = null;
8626	while (++index < size) {
8627	args[index] = arguments[index];
8628	}
8629	return func.bind.apply(func, args);
8630	}
8631	}
8632
8633	/**
8634	* @memberof async
8635	* @namespace timeout
8636	* @param {Function} func
8637	* @param {number} millisec
8638	* @param {*} info
8639	*/
8640	function timeout(func, millisec, info) {
8641	var callback, timer;
8642	return wrappedFunc;
8643
8644	function wrappedFunc() {
8645	timer = setTimeout(timeoutCallback, millisec);
8646	var args = createArray(arguments);
8647	var lastIndex = args.length - 1;
8648	callback = args[lastIndex];
8649	args[lastIndex] = injectedCallback;
8650	simpleApply(func, args);
8651	}
8652
8653	function timeoutCallback() {
8654	var name = func.name \|\| 'anonymous';
8655	var err = new Error('Callback function "' + name + '" timed out.');
8656	err.code = 'ETIMEDOUT';
8657	if (info) {
8658	err.info = info;
8659	}
8660	timer = null;
8661	callback(err);
8662	}
8663
8664	function injectedCallback() {
8665	if (timer !== null) {
8666	simpleApply(callback, createArray(arguments));
8667	clearTimeout(timer);
8668	}
8669	}
8670
8671	function simpleApply(func, args) {
8672	switch (args.length) {
8673	case 0:
8674	func();
8675	break;
8676	case 1:
8677	func(args[0]);
8678	break;
8679	case 2:
8680	func(args[0], args[1]);
8681	break;
8682	default:
8683	func.apply(null, args);
8684	break;
8685	}
8686	}
8687	}
8688
8689	/**
8690	* @memberof async
8691	* @namespace times
8692	* @param {number} n - n >= 1
8693	* @param {Function} iterator
8694	* @param {Function} callback
8695	* @example
8696	*
8697	* var iterator = function(n, done) {
8698	* done(null, n);
8699	* };
8700	* async.times(4, iterator, function(err, res) {
8701	* console.log(res); // [0, 1, 2, 3];
8702	* });
8703	*
8704	*/
8705	function times(n, iterator, callback) {
8706	callback = callback \|\| noop;
8707	n = +n;
8708	if (isNaN(n) \|\| n < 1) {
8709	return callback(null, []);
8710	}
8711	var result = Array(n);
8712	timesSync(n, iterate);
8713
8714	function iterate(num) {
8715	iterator(num, createCallback(num));
8716	}
8717
8718	function createCallback(index) {
8719	return function(err, res) {
8720	if (index === null) {
8721	throwError();
8722	}
8723	result[index] = res;
8724	index = null;
8725	if (err) {
8726	callback(err);
8727	callback = noop;
8728	} else if (--n === 0) {
8729	callback(null, result);
8730	}
8731	};
8732	}
8733	}
8734
8735	/**
8736	* @memberof async
8737	* @namespace timesSeries
8738	* @param {number} n - n >= 1
8739	* @param {Function} iterator
8740	* @param {Function} callback
8741	* @example
8742	*
8743	* var iterator = function(n, done) {
8744	* done(null, n);
8745	* };
8746	* async.timesSeries(4, iterator, function(err, res) {
8747	* console.log(res); // [0, 1, 2, 3];
8748	* });
8749	*
8750	*/
8751	function timesSeries(n, iterator, callback) {
8752	callback = callback \|\| noop;
8753	n = +n;
8754	if (isNaN(n) \|\| n < 1) {
8755	return callback(null, []);
8756	}
8757	var result = Array(n);
8758	var sync = false;
8759	var completed = 0;
8760	iterate();
8761
8762	function iterate() {
8763	iterator(completed, done);
8764	}
8765
8766	function done(err, res) {
8767	result[completed] = res;
8768	if (err) {
8769	callback(err);
8770	callback = throwError;
8771	} else if (++completed >= n) {
8772	callback(null, result);
8773	callback = throwError;
8774	} else if (sync) {
8775	nextTick(iterate);
8776	} else {
8777	sync = true;
8778	iterate();
8779	}
8780	sync = false;
8781	}
8782	}
8783
8784	/**
8785	* @memberof async
8786	* @namespace timesLimit
8787	* @param {number} n - n >= 1
8788	* @param {number} limit - n >= 1
8789	* @param {Function} iterator
8790	* @param {Function} callback
8791	* @example
8792	*
8793	* var iterator = function(n, done) {
8794	* done(null, n);
8795	* };
8796	* async.timesLimit(4, 2, iterator, function(err, res) {
8797	* console.log(res); // [0, 1, 2, 3];
8798	* });
8799	*
8800	*/
8801	function timesLimit(n, limit, iterator, callback) {
8802	callback = callback \|\| noop;
8803	n = +n;
8804	if (isNaN(n) \|\| n < 1 \|\| isNaN(limit) \|\| limit < 1) {
8805	return callback(null, []);
8806	}
8807	var result = Array(n);
8808	var sync = false;
8809	var started = 0;
8810	var completed = 0;
8811	timesSync(limit > n ? n : limit, iterate);
8812
8813	function iterate() {
8814	var index = started++;
8815	if (index < n) {
8816	iterator(index, createCallback(index));
8817	}
8818	}
8819
8820	function createCallback(index) {
8821	return function(err, res) {
8822	if (index === null) {
8823	throwError();
8824	}
8825	result[index] = res;
8826	index = null;
8827	if (err) {
8828	callback(err);
8829	callback = noop;
8830	} else if (++completed >= n) {
8831	callback(null, result);
8832	callback = throwError;
8833	} else if (sync) {
8834	nextTick(iterate);
8835	} else {
8836	sync = true;
8837	iterate();
8838	}
8839	sync = false;
8840	};
8841	}
8842	}
8843
8844	/**
8845	* @memberof async
8846	* @namespace race
8847	* @param {Array\|Object} tasks - functions
8848	* @param {Function} callback
8849	* @example
8850	*
8851	* // array
8852	* var called = 0;
8853	* var tasks = [
8854	* function(done) {
8855	* setTimeout(function() {
8856	* called++;
8857	* done(null, '1');
8858	* }, 30);
8859	* },
8860	* function(done) {
8861	* setTimeout(function() {
8862	* called++;
8863	* done(null, '2');
8864	* }, 20);
8865	* },
8866	* function(done) {
8867	* setTimeout(function() {
8868	* called++;
8869	* done(null, '3');
8870	* }, 10);
8871	* }
8872	* ];
8873	* async.race(tasks, function(err, res) {
8874	* console.log(res); // '3'
8875	* console.log(called); // 1
8876	* setTimeout(function() {
8877	* console.log(called); // 3
8878	* }, 50);
8879	* });
8880	*
8881	* @example
8882	*
8883	* // object
8884	* var called = 0;
8885	* var tasks = {
8886	* 'test1': function(done) {
8887	* setTimeout(function() {
8888	* called++;
8889	* done(null, '1');
8890	* }, 30);
8891	* },
8892	* 'test2': function(done) {
8893	* setTimeout(function() {
8894	* called++;
8895	* done(null, '2');
8896	* }, 20);
8897	* },
8898	* 'test3': function(done) {
8899	* setTimeout(function() {
8900	* called++;
8901	* done(null, '3');
8902	* }, 10);
8903	* }
8904	* };
8905	* async.race(tasks, function(err, res) {
8906	* console.log(res); // '3'
8907	* console.log(called); // 1
8908	* setTimeout(function() {
8909	* console.log(called); // 3
8910	* done();
8911	* }, 50);
8912	* });
8913	*
8914	*/
8915	function race(tasks, callback) {
8916	callback = once(callback \|\| noop);
8917	var size, keys;
8918	var index = -1;
8919	if (isArray(tasks)) {
8920	size = tasks.length;
8921	while (++index < size) {
8922	tasks[index](callback);
8923	}
8924	} else if (tasks && typeof tasks === obj) {
8925	keys = nativeKeys(tasks);
8926	size = keys.length;
8927	while (++index < size) {
8928	tasks[keys[index]](callback);
8929	}
8930	} else {
8931	return callback(new TypeError('First argument to race must be a collection of functions'));
8932	}
8933	if (!size) {
8934	callback(null);
8935	}
8936	}
8937
8938	/**
8939	* @memberof async
8940	* @namespace memoize
8941	*/
8942	function memoize(fn, hasher) {
8943	hasher =
8944	hasher \|\|
8945	function(hash) {
8946	return hash;
8947	};
8948
8949	var memo = {};
8950	var queues = {};
8951	var memoized = function() {
8952	var args = createArray(arguments);
8953	var callback = args.pop();
8954	var key = hasher.apply(null, args);
8955	if (has(memo, key)) {
8956	nextTick(function() {
8957	callback.apply(null, memo[key]);
8958	});
8959	return;
8960	}
8961	if (has(queues, key)) {
8962	return queues[key].push(callback);
8963	}
8964
8965	queues[key] = [callback];
8966	args.push(done);
8967	fn.apply(null, args);
8968
8969	function done(err) {
8970	var args = createArray(arguments);
8971	if (!err) {
8972	memo[key] = args;
8973	}
8974	var q = queues[key];
8975	delete queues[key];
8976
8977	var i = -1;
8978	var size = q.length;
8979	while (++i < size) {
8980	q[i].apply(null, args);
8981	}
8982	}
8983	};
8984	memoized.memo = memo;
8985	memoized.unmemoized = fn;
8986	return memoized;
8987	}
8988
8989	/**
8990	* @memberof async
8991	* @namespace unmemoize
8992	*/
8993	function unmemoize(fn) {
8994	return function() {
8995	return (fn.unmemoized \|\| fn).apply(null, arguments);
8996	};
8997	}
8998
8999	/**
9000	* @memberof async
9001	* @namespace ensureAsync
9002	*/
9003	function ensureAsync(fn) {
9004	return function(/* ...args, callback */) {
9005	var args = createArray(arguments);
9006	var lastIndex = args.length - 1;
9007	var callback = args[lastIndex];
9008	var sync = true;
9009	args[lastIndex] = done;
9010	fn.apply(this, args);
9011	sync = false;
9012
9013	function done() {
9014	var innerArgs = createArray(arguments);
9015	if (sync) {
9016	nextTick(function() {
9017	callback.apply(null, innerArgs);
9018	});
9019	} else {
9020	callback.apply(null, innerArgs);
9021	}
9022	}
9023	};
9024	}
9025
9026	/**
9027	* @memberof async
9028	* @namespace constant
9029	*/
9030	function constant(/* values... */) {
9031	var args = [null].concat(createArray(arguments));
9032	return function(callback) {
9033	callback = arguments[arguments.length - 1];
9034	callback.apply(this, args);
9035	};
9036	}
9037
9038	function asyncify(fn) {
9039	return function(/* args..., callback */) {
9040	var args = createArray(arguments);
9041	var callback = args.pop();
9042	var result;
9043	try {
9044	result = fn.apply(this, args);
9045	} catch (e) {
9046	return callback(e);
9047	}
9048	if (result && typeof result.then === func) {
9049	result.then(
9050	function(value) {
9051	invokeCallback(callback, null, value);
9052	},
9053	function(err) {
9054	invokeCallback(callback, err && err.message ? err : new Error(err));
9055	}
9056	);
9057	} else {
9058	callback(null, result);
9059	}
9060	};
9061	}
9062
9063	function invokeCallback(callback, err, value) {
9064	try {
9065	callback(err, value);
9066	} catch (e) {
9067	nextTick(rethrow, e);
9068	}
9069	}
9070
9071	function rethrow(error) {
9072	throw error;
9073	}
9074
9075	/**
9076	* @memberof async
9077	* @namespace reflect
9078	* @param {Function} func
9079	* @return {Function}
9080	*/
9081	function reflect(func) {
9082	return function(/* args..., callback */) {
9083	var callback;
9084	switch (arguments.length) {
9085	case 1:
9086	callback = arguments[0];
9087	return func(done);
9088	case 2:
9089	callback = arguments[1];
9090	return func(arguments[0], done);
9091	default:
9092	var args = createArray(arguments);
9093	var lastIndex = args.length - 1;
9094	callback = args[lastIndex];
9095	args[lastIndex] = done;
9096	func.apply(this, args);
9097	}
9098
9099	function done(err, res) {
9100	if (err) {
9101	return callback(null, {
9102	error: err
9103	});
9104	}
9105	if (arguments.length > 2) {
9106	res = slice(arguments, 1);
9107	}
9108	callback(null, {
9109	value: res
9110	});
9111	}
9112	};
9113	}
9114
9115	/**
9116	* @memberof async
9117	* @namespace reflectAll
9118	* @param {Array[]\|Object} tasks
9119	* @return {Function}
9120	*/
9121	function reflectAll(tasks) {
9122	var newTasks, keys;
9123	if (isArray(tasks)) {
9124	newTasks = Array(tasks.length);
9125	arrayEachSync(tasks, iterate);
9126	} else if (tasks && typeof tasks === obj) {
9127	keys = nativeKeys(tasks);
9128	newTasks = {};
9129	baseEachSync(tasks, iterate, keys);
9130	}
9131	return newTasks;
9132
9133	function iterate(func, key) {
9134	newTasks[key] = reflect(func);
9135	}
9136	}
9137
9138	/**
9139	* @memberof async
9140	* @namespace createLogger
9141	*/
9142	function createLogger(name) {
9143	return function(fn) {
9144	var args = slice(arguments, 1);
9145	args.push(done);
9146	fn.apply(null, args);
9147	};
9148
9149	function done(err) {
9150	if (typeof console === obj) {
9151	if (err) {
9152	if (console.error) {
9153	console.error(err);
9154	}
9155	return;
9156	}
9157	if (console[name]) {
9158	var args = slice(arguments, 1);
9159	arrayEachSync(args, function(arg) {
9160	console[name](arg);
9161	});
9162	}
9163	}
9164	}
9165	}
9166
9167	/**
9168	* @memberof async
9169	* @namespace safe
9170	*/
9171	function safe() {
9172	createImmediate();
9173	return exports;
9174	}
9175
9176	/**
9177	* @memberof async
9178	* @namespace fast
9179	*/
9180	function fast() {
9181	createImmediate(false);
9182	return exports;
9183	}
9184	});

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