diff options
Diffstat (limited to 'dist/async.js')
| -rw-r--r-- | dist/async.js | 6182 |
1 files changed, 3757 insertions, 2425 deletions
diff --git a/dist/async.js b/dist/async.js index 0032ce5..ff7031e 100644 --- a/dist/async.js +++ b/dist/async.js @@ -1,2563 +1,3895 @@ (function (global, factory) { - typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) : - typeof define === 'function' && define.amd ? define(['exports'], factory) : - (factory((global.async = {}))); + typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) : + typeof define === 'function' && define.amd ? define(['exports'], factory) : + (factory((global.async = global.async || {}))); }(this, function (exports) { 'use strict'; - /** - * A faster alternative to `Function#apply`, this function invokes `func` - * with the `this` binding of `thisArg` and the arguments of `args`. - * - * @private - * @param {Function} func The function to invoke. - * @param {*} thisArg The `this` binding of `func`. - * @param {...*} args The arguments to invoke `func` with. - * @returns {*} Returns the result of `func`. - */ - function apply$1(func, thisArg, args) { - var length = args.length; - switch (length) { - case 0: return func.call(thisArg); - case 1: return func.call(thisArg, args[0]); - case 2: return func.call(thisArg, args[0], args[1]); - case 3: return func.call(thisArg, args[0], args[1], args[2]); - } - return func.apply(thisArg, args); - } - - /** - * Checks if `value` is the [language type](https://es5.github.io/#x8) of `Object`. - * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`) - * - * @static - * @memberOf _ - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is an object, else `false`. - * @example - * - * _.isObject({}); - * // => true - * - * _.isObject([1, 2, 3]); - * // => true - * - * _.isObject(_.noop); - * // => true - * - * _.isObject(null); - * // => false - */ - function isObject(value) { - var type = typeof value; - return !!value && (type == 'object' || type == 'function'); - } - - var funcTag = '[object Function]'; - var genTag = '[object GeneratorFunction]'; - /** Used for built-in method references. */ - var objectProto$4 = Object.prototype; - - /** - * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring) - * of values. - */ - var objectToString$2 = objectProto$4.toString; - - /** - * Checks if `value` is classified as a `Function` object. - * - * @static - * @memberOf _ - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. - * @example - * - * _.isFunction(_); - * // => true - * - * _.isFunction(/abc/); - * // => false - */ - function isFunction(value) { - // The use of `Object#toString` avoids issues with the `typeof` operator - // in Safari 8 which returns 'object' for typed array constructors, and - // PhantomJS 1.9 which returns 'function' for `NodeList` instances. - var tag = isObject(value) ? objectToString$2.call(value) : ''; - return tag == funcTag || tag == genTag; - } - - /** Used as references for various `Number` constants. */ - var NAN = 0 / 0; - - /** Used to match leading and trailing whitespace. */ - var reTrim = /^\s+|\s+$/g; - - /** Used to detect bad signed hexadecimal string values. */ - var reIsBadHex = /^[-+]0x[0-9a-f]+$/i; - - /** Used to detect binary string values. */ - var reIsBinary = /^0b[01]+$/i; - - /** Used to detect octal string values. */ - var reIsOctal = /^0o[0-7]+$/i; - - /** Built-in method references without a dependency on `root`. */ - var freeParseInt = parseInt; - - /** - * Converts `value` to a number. - * - * @static - * @memberOf _ - * @category Lang - * @param {*} value The value to process. - * @returns {number} Returns the number. - * @example - * - * _.toNumber(3); - * // => 3 - * - * _.toNumber(Number.MIN_VALUE); - * // => 5e-324 - * - * _.toNumber(Infinity); - * // => Infinity - * - * _.toNumber('3'); - * // => 3 - */ - function toNumber(value) { - if (isObject(value)) { - var other = isFunction(value.valueOf) ? value.valueOf() : value; - value = isObject(other) ? (other + '') : other; - } - if (typeof value != 'string') { - return value === 0 ? value : +value; - } - value = value.replace(reTrim, ''); - var isBinary = reIsBinary.test(value); - return (isBinary || reIsOctal.test(value)) - ? freeParseInt(value.slice(2), isBinary ? 2 : 8) - : (reIsBadHex.test(value) ? NAN : +value); - } - - var INFINITY = 1 / 0; - var MAX_INTEGER = 1.7976931348623157e+308; - /** - * Converts `value` to an integer. - * - * **Note:** This function is loosely based on [`ToInteger`](http://www.ecma-international.org/ecma-262/6.0/#sec-tointeger). - * - * @static - * @memberOf _ - * @category Lang - * @param {*} value The value to convert. - * @returns {number} Returns the converted integer. - * @example - * - * _.toInteger(3); - * // => 3 - * - * _.toInteger(Number.MIN_VALUE); - * // => 0 - * - * _.toInteger(Infinity); - * // => 1.7976931348623157e+308 - * - * _.toInteger('3'); - * // => 3 - */ - function toInteger(value) { - if (!value) { - return value === 0 ? value : 0; - } - value = toNumber(value); - if (value === INFINITY || value === -INFINITY) { - var sign = (value < 0 ? -1 : 1); - return sign * MAX_INTEGER; - } - var remainder = value % 1; - return value === value ? (remainder ? value - remainder : value) : 0; - } - - /** Used as the `TypeError` message for "Functions" methods. */ - var FUNC_ERROR_TEXT = 'Expected a function'; - - /* Built-in method references for those with the same name as other `lodash` methods. */ - var nativeMax = Math.max; - - /** - * Creates a function that invokes `func` with the `this` binding of the - * created function and arguments from `start` and beyond provided as an array. - * - * **Note:** This method is based on the [rest parameter](https://mdn.io/rest_parameters). - * - * @static - * @memberOf _ - * @category Function - * @param {Function} func The function to apply a rest parameter to. - * @param {number} [start=func.length-1] The start position of the rest parameter. - * @returns {Function} Returns the new function. - * @example - * - * var say = _.rest(function(what, names) { - * return what + ' ' + _.initial(names).join(', ') + - * (_.size(names) > 1 ? ', & ' : '') + _.last(names); - * }); - * - * say('hello', 'fred', 'barney', 'pebbles'); - * // => 'hello fred, barney, & pebbles' - */ - function rest(func, start) { - if (typeof func != 'function') { - throw new TypeError(FUNC_ERROR_TEXT); - } - start = nativeMax(start === undefined ? (func.length - 1) : toInteger(start), 0); - return function() { - var args = arguments, - index = -1, - length = nativeMax(args.length - start, 0), - array = Array(length); - - while (++index < length) { - array[index] = args[start + index]; + /** + * A faster alternative to `Function#apply`, this function invokes `func` + * with the `this` binding of `thisArg` and the arguments of `args`. + * + * @private + * @param {Function} func The function to invoke. + * @param {*} thisArg The `this` binding of `func`. + * @param {...*} args The arguments to invoke `func` with. + * @returns {*} Returns the result of `func`. + */ + function apply(func, thisArg, args) { + var length = args.length; + switch (length) { + case 0: return func.call(thisArg); + case 1: return func.call(thisArg, args[0]); + case 2: return func.call(thisArg, args[0], args[1]); + case 3: return func.call(thisArg, args[0], args[1], args[2]); } - switch (start) { - case 0: return func.call(this, array); - case 1: return func.call(this, args[0], array); - case 2: return func.call(this, args[0], args[1], array); + return func.apply(thisArg, args); + } + + /** + * Checks if `value` is the [language type](https://es5.github.io/#x8) of `Object`. + * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`) + * + * @static + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an object, else `false`. + * @example + * + * _.isObject({}); + * // => true + * + * _.isObject([1, 2, 3]); + * // => true + * + * _.isObject(_.noop); + * // => true + * + * _.isObject(null); + * // => false + */ + function isObject(value) { + var type = typeof value; + return !!value && (type == 'object' || type == 'function'); + } + + var funcTag = '[object Function]'; + var genTag = '[object GeneratorFunction]'; + /** Used for built-in method references. */ + var objectProto = Object.prototype; + + /** + * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring) + * of values. + */ + var objectToString = objectProto.toString; + + /** + * Checks if `value` is classified as a `Function` object. + * + * @static + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. + * @example + * + * _.isFunction(_); + * // => true + * + * _.isFunction(/abc/); + * // => false + */ + function isFunction(value) { + // The use of `Object#toString` avoids issues with the `typeof` operator + // in Safari 8 which returns 'object' for typed array and weak map constructors, + // and PhantomJS 1.9 which returns 'function' for `NodeList` instances. + var tag = isObject(value) ? objectToString.call(value) : ''; + return tag == funcTag || tag == genTag; + } + + /** Used as references for various `Number` constants. */ + var NAN = 0 / 0; + + /** Used to match leading and trailing whitespace. */ + var reTrim = /^\s+|\s+$/g; + + /** Used to detect bad signed hexadecimal string values. */ + var reIsBadHex = /^[-+]0x[0-9a-f]+$/i; + + /** Used to detect binary string values. */ + var reIsBinary = /^0b[01]+$/i; + + /** Used to detect octal string values. */ + var reIsOctal = /^0o[0-7]+$/i; + + /** Built-in method references without a dependency on `root`. */ + var freeParseInt = parseInt; + + /** + * Converts `value` to a number. + * + * @static + * @memberOf _ + * @category Lang + * @param {*} value The value to process. + * @returns {number} Returns the number. + * @example + * + * _.toNumber(3); + * // => 3 + * + * _.toNumber(Number.MIN_VALUE); + * // => 5e-324 + * + * _.toNumber(Infinity); + * // => Infinity + * + * _.toNumber('3'); + * // => 3 + */ + function toNumber(value) { + if (isObject(value)) { + var other = isFunction(value.valueOf) ? value.valueOf() : value; + value = isObject(other) ? (other + '') : other; } - var otherArgs = Array(start + 1); - index = -1; - while (++index < start) { - otherArgs[index] = args[index]; + if (typeof value != 'string') { + return value === 0 ? value : +value; } - otherArgs[start] = array; - return apply$1(func, this, otherArgs); - }; - } - - function applyEach$1(eachfn) { - return rest(function (fns, args) { - var go = rest(function (args) { - var that = this; - var callback = args.pop(); - return eachfn(fns, function (fn, _, cb) { - fn.apply(that, args.concat([cb])); - }, callback); - }); - if (args.length) { - return go.apply(this, args); - } else { - return go; - } - }); - } - - /** Used as the `TypeError` message for "Functions" methods. */ - var FUNC_ERROR_TEXT$1 = 'Expected a function'; - - /** - * Creates a function that invokes `func`, with the `this` binding and arguments - * of the created function, while it's called less than `n` times. Subsequent - * calls to the created function return the result of the last `func` invocation. - * - * @static - * @memberOf _ - * @category Function - * @param {number} n The number of calls at which `func` is no longer invoked. - * @param {Function} func The function to restrict. - * @returns {Function} Returns the new restricted function. - * @example - * - * jQuery(element).on('click', _.before(5, addContactToList)); - * // => allows adding up to 4 contacts to the list - */ - function before(n, func) { - var result; - if (typeof func != 'function') { - throw new TypeError(FUNC_ERROR_TEXT$1); - } - n = toInteger(n); - return function() { - if (--n > 0) { - result = func.apply(this, arguments); + value = value.replace(reTrim, ''); + var isBinary = reIsBinary.test(value); + return (isBinary || reIsOctal.test(value)) + ? freeParseInt(value.slice(2), isBinary ? 2 : 8) + : (reIsBadHex.test(value) ? NAN : +value); + } + + var INFINITY = 1 / 0; + var MAX_INTEGER = 1.7976931348623157e+308; + /** + * Converts `value` to an integer. + * + * **Note:** This function is loosely based on [`ToInteger`](http://www.ecma-international.org/ecma-262/6.0/#sec-tointeger). + * + * @static + * @memberOf _ + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted integer. + * @example + * + * _.toInteger(3); + * // => 3 + * + * _.toInteger(Number.MIN_VALUE); + * // => 0 + * + * _.toInteger(Infinity); + * // => 1.7976931348623157e+308 + * + * _.toInteger('3'); + * // => 3 + */ + function toInteger(value) { + if (!value) { + return value === 0 ? value : 0; } - if (n <= 1) { - func = undefined; + value = toNumber(value); + if (value === INFINITY || value === -INFINITY) { + var sign = (value < 0 ? -1 : 1); + return sign * MAX_INTEGER; } - return result; - }; - } - - /** - * Creates a function that is restricted to invoking `func` once. Repeat calls - * to the function return the value of the first invocation. The `func` is - * invoked with the `this` binding and arguments of the created function. - * - * @static - * @memberOf _ - * @category Function - * @param {Function} func The function to restrict. - * @returns {Function} Returns the new restricted function. - * @example - * - * var initialize = _.once(createApplication); - * initialize(); - * initialize(); - * // `initialize` invokes `createApplication` once - */ - function once(func) { - return before(2, func); - } - - /** - * A no-operation function that returns `undefined` regardless of the - * arguments it receives. - * - * @static - * @memberOf _ - * @category Util - * @example - * - * var object = { 'user': 'fred' }; - * - * _.noop(object) === undefined; - * // => true - */ - function noop() { - // No operation performed. - } - - /** - * The base implementation of `_.property` without support for deep paths. - * - * @private - * @param {string} key The key of the property to get. - * @returns {Function} Returns the new function. - */ - function baseProperty(key) { - return function(object) { - return object == null ? undefined : object[key]; - }; - } - - /** - * Gets the "length" property value of `object`. - * - * **Note:** This function is used to avoid a [JIT bug](https://bugs.webkit.org/show_bug.cgi?id=142792) - * that affects Safari on at least iOS 8.1-8.3 ARM64. - * - * @private - * @param {Object} object The object to query. - * @returns {*} Returns the "length" value. - */ - var getLength = baseProperty('length'); - - /** Used as references for various `Number` constants. */ - var MAX_SAFE_INTEGER$1 = 9007199254740991; - - /** - * Checks if `value` is a valid array-like length. - * - * **Note:** This function is loosely based on [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength). - * - * @static - * @memberOf _ - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a valid length, else `false`. - * @example - * - * _.isLength(3); - * // => true - * - * _.isLength(Number.MIN_VALUE); - * // => false - * - * _.isLength(Infinity); - * // => false - * - * _.isLength('3'); - * // => false - */ - function isLength(value) { - return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER$1; - } - - /** - * Checks if `value` is array-like. A value is considered array-like if it's - * not a function and has a `value.length` that's an integer greater than or - * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`. - * - * @static - * @memberOf _ - * @type Function - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is array-like, else `false`. - * @example - * - * _.isArrayLike([1, 2, 3]); - * // => true - * - * _.isArrayLike(document.body.children); - * // => true - * - * _.isArrayLike('abc'); - * // => true - * - * _.isArrayLike(_.noop); - * // => false - */ - function isArrayLike(value) { - return value != null && - !(typeof value == 'function' && isFunction(value)) && isLength(getLength(value)); - } - - /** Used for built-in method references. */ - var objectProto = Object.prototype; - - /** Used to check objects for own properties. */ - var hasOwnProperty = objectProto.hasOwnProperty; - - /** Built-in value references. */ - var getPrototypeOf = Object.getPrototypeOf; - - /** - * The base implementation of `_.has` without support for deep paths. - * - * @private - * @param {Object} object The object to query. - * @param {Array|string} key The key to check. - * @returns {boolean} Returns `true` if `key` exists, else `false`. - */ - function baseHas(object, key) { - // Avoid a bug in IE 10-11 where objects with a [[Prototype]] of `null`, - // that are composed entirely of index properties, return `false` for - // `hasOwnProperty` checks of them. - return hasOwnProperty.call(object, key) || - (typeof object == 'object' && key in object && getPrototypeOf(object) === null); - } - - /* Built-in method references for those with the same name as other `lodash` methods. */ - var nativeKeys = Object.keys; - - /** - * The base implementation of `_.keys` which doesn't skip the constructor - * property of prototypes or treat sparse arrays as dense. - * - * @private - * @type Function - * @param {Object} object The object to query. - * @returns {Array} Returns the array of property names. - */ - function baseKeys(object) { - return nativeKeys(Object(object)); - } - - /** - * The base implementation of `_.times` without support for iteratee shorthands - * or max array length checks. - * - * @private - * @param {number} n The number of times to invoke `iteratee`. - * @param {Function} iteratee The function invoked per iteration. - * @returns {Array} Returns the array of results. - */ - function baseTimes(n, iteratee) { - var index = -1, - result = Array(n); - - while (++index < n) { - result[index] = iteratee(index); - } - return result; - } - - /** - * Checks if `value` is object-like. A value is object-like if it's not `null` - * and has a `typeof` result of "object". - * - * @static - * @memberOf _ - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is object-like, else `false`. - * @example - * - * _.isObjectLike({}); - * // => true - * - * _.isObjectLike([1, 2, 3]); - * // => true - * - * _.isObjectLike(_.noop); - * // => false - * - * _.isObjectLike(null); - * // => false - */ - function isObjectLike(value) { - return !!value && typeof value == 'object'; - } - - /** - * This method is like `_.isArrayLike` except that it also checks if `value` - * is an object. - * - * @static - * @memberOf _ - * @type Function - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is an array-like object, else `false`. - * @example - * - * _.isArrayLikeObject([1, 2, 3]); - * // => true - * - * _.isArrayLikeObject(document.body.children); - * // => true - * - * _.isArrayLikeObject('abc'); - * // => false - * - * _.isArrayLikeObject(_.noop); - * // => false - */ - function isArrayLikeObject(value) { - return isObjectLike(value) && isArrayLike(value); - } - - /** `Object#toString` result references. */ - var argsTag = '[object Arguments]'; - - /** Used for built-in method references. */ - var objectProto$2 = Object.prototype; - - /** Used to check objects for own properties. */ - var hasOwnProperty$1 = objectProto$2.hasOwnProperty; - - /** - * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring) - * of values. - */ - var objectToString = objectProto$2.toString; - - /** Built-in value references. */ - var propertyIsEnumerable = objectProto$2.propertyIsEnumerable; - - /** - * Checks if `value` is likely an `arguments` object. - * - * @static - * @memberOf _ - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. - * @example - * - * _.isArguments(function() { return arguments; }()); - * // => true - * - * _.isArguments([1, 2, 3]); - * // => false - */ - function isArguments(value) { - // Safari 8.1 incorrectly makes `arguments.callee` enumerable in strict mode. - return isArrayLikeObject(value) && hasOwnProperty$1.call(value, 'callee') && - (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag); - } - - /** - * Checks if `value` is classified as an `Array` object. - * - * @static - * @memberOf _ - * @type Function - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. - * @example - * - * _.isArray([1, 2, 3]); - * // => true - * - * _.isArray(document.body.children); - * // => false - * - * _.isArray('abc'); - * // => false - * - * _.isArray(_.noop); - * // => false - */ - var isArray = Array.isArray; - - /** `Object#toString` result references. */ - var stringTag = '[object String]'; - - /** Used for built-in method references. */ - var objectProto$3 = Object.prototype; - - /** - * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring) - * of values. - */ - var objectToString$1 = objectProto$3.toString; - - /** - * Checks if `value` is classified as a `String` primitive or object. - * - * @static - * @memberOf _ - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. - * @example - * - * _.isString('abc'); - * // => true - * - * _.isString(1); - * // => false - */ - function isString(value) { - return typeof value == 'string' || - (!isArray(value) && isObjectLike(value) && objectToString$1.call(value) == stringTag); - } - - /** - * Creates an array of index keys for `object` values of arrays, - * `arguments` objects, and strings, otherwise `null` is returned. - * - * @private - * @param {Object} object The object to query. - * @returns {Array|null} Returns index keys, else `null`. - */ - function indexKeys(object) { - var length = object ? object.length : undefined; - if (isLength(length) && - (isArray(object) || isString(object) || isArguments(object))) { - return baseTimes(length, String); - } - return null; - } - - /** Used as references for various `Number` constants. */ - var MAX_SAFE_INTEGER = 9007199254740991; - - /** Used to detect unsigned integer values. */ - var reIsUint = /^(?:0|[1-9]\d*)$/; - - /** - * Checks if `value` is a valid array-like index. - * - * @private - * @param {*} value The value to check. - * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index. - * @returns {boolean} Returns `true` if `value` is a valid index, else `false`. - */ - function isIndex(value, length) { - value = (typeof value == 'number' || reIsUint.test(value)) ? +value : -1; - length = length == null ? MAX_SAFE_INTEGER : length; - return value > -1 && value % 1 == 0 && value < length; - } - - /** Used for built-in method references. */ - var objectProto$1 = Object.prototype; - - /** - * Checks if `value` is likely a prototype object. - * - * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a prototype, else `false`. - */ - function isPrototype(value) { - var Ctor = value && value.constructor, - proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto$1; - - return value === proto; - } - - /** - * Creates an array of the own enumerable property names of `object`. - * - * **Note:** Non-object values are coerced to objects. See the - * [ES spec](http://ecma-international.org/ecma-262/6.0/#sec-object.keys) - * for more details. - * - * @static - * @memberOf _ - * @category Object - * @param {Object} object The object to query. - * @returns {Array} Returns the array of property names. - * @example - * - * function Foo() { - * this.a = 1; - * this.b = 2; - * } - * - * Foo.prototype.c = 3; - * - * _.keys(new Foo); - * // => ['a', 'b'] (iteration order is not guaranteed) - * - * _.keys('hi'); - * // => ['0', '1'] - */ - function keys(object) { - var isProto = isPrototype(object); - if (!(isProto || isArrayLike(object))) { - return baseKeys(object); - } - var indexes = indexKeys(object), - skipIndexes = !!indexes, - result = indexes || [], - length = result.length; - - for (var key in object) { - if (baseHas(object, key) && - !(skipIndexes && (key == 'length' || isIndex(key, length))) && - !(isProto && key == 'constructor')) { - result.push(key); + var remainder = value % 1; + return value === value ? (remainder ? value - remainder : value) : 0; + } + + /** Used as the `TypeError` message for "Functions" methods. */ + var FUNC_ERROR_TEXT = 'Expected a function'; + + /* Built-in method references for those with the same name as other `lodash` methods. */ + var nativeMax = Math.max; + + /** + * Creates a function that invokes `func` with the `this` binding of the + * created function and arguments from `start` and beyond provided as an array. + * + * **Note:** This method is based on the [rest parameter](https://mdn.io/rest_parameters). + * + * @static + * @memberOf _ + * @category Function + * @param {Function} func The function to apply a rest parameter to. + * @param {number} [start=func.length-1] The start position of the rest parameter. + * @returns {Function} Returns the new function. + * @example + * + * var say = _.rest(function(what, names) { + * return what + ' ' + _.initial(names).join(', ') + + * (_.size(names) > 1 ? ', & ' : '') + _.last(names); + * }); + * + * say('hello', 'fred', 'barney', 'pebbles'); + * // => 'hello fred, barney, & pebbles' + */ + function rest(func, start) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); } + start = nativeMax(start === undefined ? (func.length - 1) : toInteger(start), 0); + return function() { + var args = arguments, + index = -1, + length = nativeMax(args.length - start, 0), + array = Array(length); + + while (++index < length) { + array[index] = args[start + index]; + } + switch (start) { + case 0: return func.call(this, array); + case 1: return func.call(this, args[0], array); + case 2: return func.call(this, args[0], args[1], array); + } + var otherArgs = Array(start + 1); + index = -1; + while (++index < start) { + otherArgs[index] = args[index]; + } + otherArgs[start] = array; + return apply(func, this, otherArgs); + }; } - return result; - } - - function keyIterator(coll) { - var i = -1; - var len; - if (isArrayLike(coll)) { - len = coll.length; - return function next() { - i++; - return i < len ? i : null; - }; - } else { - var okeys = keys(coll); - len = okeys.length; - return function next() { - i++; - return i < len ? okeys[i] : null; - }; + + function applyEach$1(eachfn) { + return rest(function (fns, args) { + var go = rest(function (args) { + var that = this; + var callback = args.pop(); + return eachfn(fns, function (fn, _, cb) { + fn.apply(that, args.concat([cb])); + }, callback); + }); + if (args.length) { + return go.apply(this, args); + } else { + return go; + } + }); + } + + /** + * A no-operation function that returns `undefined` regardless of the + * arguments it receives. + * + * @static + * @memberOf _ + * @category Util + * @example + * + * var object = { 'user': 'fred' }; + * + * _.noop(object) === undefined; + * // => true + */ + function noop() { + // No operation performed. + } + + /** Used as the `TypeError` message for "Functions" methods. */ + var FUNC_ERROR_TEXT$1 = 'Expected a function'; + + /** + * Creates a function that invokes `func`, with the `this` binding and arguments + * of the created function, while it's called less than `n` times. Subsequent + * calls to the created function return the result of the last `func` invocation. + * + * @static + * @memberOf _ + * @category Function + * @param {number} n The number of calls at which `func` is no longer invoked. + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new restricted function. + * @example + * + * jQuery(element).on('click', _.before(5, addContactToList)); + * // => allows adding up to 4 contacts to the list + */ + function before(n, func) { + var result; + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT$1); } - } + n = toInteger(n); + return function() { + if (--n > 0) { + result = func.apply(this, arguments); + } + if (n <= 1) { + func = undefined; + } + return result; + }; + } + + /** + * Creates a function that is restricted to invoking `func` once. Repeat calls + * to the function return the value of the first invocation. The `func` is + * invoked with the `this` binding and arguments of the created function. + * + * @static + * @memberOf _ + * @category Function + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new restricted function. + * @example + * + * var initialize = _.once(createApplication); + * initialize(); + * initialize(); + * // `initialize` invokes `createApplication` once + */ + function once(func) { + return before(2, func); + } - function onlyOnce(fn) { - return function () { - if (fn === null) throw new Error("Callback was already called."); - fn.apply(this, arguments); - fn = null; + /** + * The base implementation of `_.property` without support for deep paths. + * + * @private + * @param {string} key The key of the property to get. + * @returns {Function} Returns the new function. + */ + function baseProperty(key) { + return function(object) { + return object == null ? undefined : object[key]; }; - } + } - function eachOf(object, iterator, callback) { - callback = once(callback || noop); - object = object || []; + /** + * Gets the "length" property value of `object`. + * + * **Note:** This function is used to avoid a [JIT bug](https://bugs.webkit.org/show_bug.cgi?id=142792) + * that affects Safari on at least iOS 8.1-8.3 ARM64. + * + * @private + * @param {Object} object The object to query. + * @returns {*} Returns the "length" value. + */ + var getLength = baseProperty('length'); + + /** Used as references for various `Number` constants. */ + var MAX_SAFE_INTEGER = 9007199254740991; + + /** + * Checks if `value` is a valid array-like length. + * + * **Note:** This function is loosely based on [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength). + * + * @static + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a valid length, else `false`. + * @example + * + * _.isLength(3); + * // => true + * + * _.isLength(Number.MIN_VALUE); + * // => false + * + * _.isLength(Infinity); + * // => false + * + * _.isLength('3'); + * // => false + */ + function isLength(value) { + return typeof value == 'number' && + value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER; + } - var iter = keyIterator(object); - var key, - completed = 0; + /** + * Checks if `value` is array-like. A value is considered array-like if it's + * not a function and has a `value.length` that's an integer greater than or + * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`. + * + * @static + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is array-like, else `false`. + * @example + * + * _.isArrayLike([1, 2, 3]); + * // => true + * + * _.isArrayLike(document.body.children); + * // => true + * + * _.isArrayLike('abc'); + * // => true + * + * _.isArrayLike(_.noop); + * // => false + */ + function isArrayLike(value) { + return value != null && isLength(getLength(value)) && !isFunction(value); + } + + /** Used for built-in method references. */ + var objectProto$1 = Object.prototype; + + /** Used to check objects for own properties. */ + var hasOwnProperty = objectProto$1.hasOwnProperty; + + /** Built-in value references. */ + var getPrototypeOf = Object.getPrototypeOf; + + /** + * The base implementation of `_.has` without support for deep paths. + * + * @private + * @param {Object} object The object to query. + * @param {Array|string} key The key to check. + * @returns {boolean} Returns `true` if `key` exists, else `false`. + */ + function baseHas(object, key) { + // Avoid a bug in IE 10-11 where objects with a [[Prototype]] of `null`, + // that are composed entirely of index properties, return `false` for + // `hasOwnProperty` checks of them. + return hasOwnProperty.call(object, key) || + (typeof object == 'object' && key in object && getPrototypeOf(object) === null); + } + + /* Built-in method references for those with the same name as other `lodash` methods. */ + var nativeKeys = Object.keys; + + /** + * The base implementation of `_.keys` which doesn't skip the constructor + * property of prototypes or treat sparse arrays as dense. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + */ + function baseKeys(object) { + return nativeKeys(Object(object)); + } + + /** + * The base implementation of `_.times` without support for iteratee shorthands + * or max array length checks. + * + * @private + * @param {number} n The number of times to invoke `iteratee`. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns the array of results. + */ + function baseTimes(n, iteratee) { + var index = -1, + result = Array(n); - while ((key = iter()) != null) { - completed += 1; - iterator(object[key], key, onlyOnce(done)); + while (++index < n) { + result[index] = iteratee(index); } + return result; + } - if (completed === 0) callback(null); + /** + * Checks if `value` is object-like. A value is object-like if it's not `null` + * and has a `typeof` result of "object". + * + * @static + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is object-like, else `false`. + * @example + * + * _.isObjectLike({}); + * // => true + * + * _.isObjectLike([1, 2, 3]); + * // => true + * + * _.isObjectLike(_.noop); + * // => false + * + * _.isObjectLike(null); + * // => false + */ + function isObjectLike(value) { + return !!value && typeof value == 'object'; + } - function done(err) { - completed--; - if (err) { - callback(err); - } - // Check key is null in case iterator isn't exhausted - // and done resolved synchronously. - else if (key === null && completed <= 0) { - callback(null); - } + /** + * This method is like `_.isArrayLike` except that it also checks if `value` + * is an object. + * + * @static + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array-like object, else `false`. + * @example + * + * _.isArrayLikeObject([1, 2, 3]); + * // => true + * + * _.isArrayLikeObject(document.body.children); + * // => true + * + * _.isArrayLikeObject('abc'); + * // => false + * + * _.isArrayLikeObject(_.noop); + * // => false + */ + function isArrayLikeObject(value) { + return isObjectLike(value) && isArrayLike(value); + } + + /** `Object#toString` result references. */ + var argsTag = '[object Arguments]'; + + /** Used for built-in method references. */ + var objectProto$2 = Object.prototype; + + /** Used to check objects for own properties. */ + var hasOwnProperty$1 = objectProto$2.hasOwnProperty; + + /** + * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring) + * of values. + */ + var objectToString$1 = objectProto$2.toString; + + /** Built-in value references. */ + var propertyIsEnumerable = objectProto$2.propertyIsEnumerable; + + /** + * Checks if `value` is likely an `arguments` object. + * + * @static + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. + * @example + * + * _.isArguments(function() { return arguments; }()); + * // => true + * + * _.isArguments([1, 2, 3]); + * // => false + */ + function isArguments(value) { + // Safari 8.1 incorrectly makes `arguments.callee` enumerable in strict mode. + return isArrayLikeObject(value) && hasOwnProperty$1.call(value, 'callee') && + (!propertyIsEnumerable.call(value, 'callee') || objectToString$1.call(value) == argsTag); + } + + /** + * Checks if `value` is classified as an `Array` object. + * + * @static + * @memberOf _ + * @type {Function} + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. + * @example + * + * _.isArray([1, 2, 3]); + * // => true + * + * _.isArray(document.body.children); + * // => false + * + * _.isArray('abc'); + * // => false + * + * _.isArray(_.noop); + * // => false + */ + var isArray = Array.isArray; + + /** `Object#toString` result references. */ + var stringTag = '[object String]'; + + /** Used for built-in method references. */ + var objectProto$3 = Object.prototype; + + /** + * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring) + * of values. + */ + var objectToString$2 = objectProto$3.toString; + + /** + * Checks if `value` is classified as a `String` primitive or object. + * + * @static + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. + * @example + * + * _.isString('abc'); + * // => true + * + * _.isString(1); + * // => false + */ + function isString(value) { + return typeof value == 'string' || + (!isArray(value) && isObjectLike(value) && objectToString$2.call(value) == stringTag); + } + + /** + * Creates an array of index keys for `object` values of arrays, + * `arguments` objects, and strings, otherwise `null` is returned. + * + * @private + * @param {Object} object The object to query. + * @returns {Array|null} Returns index keys, else `null`. + */ + function indexKeys(object) { + var length = object ? object.length : undefined; + if (isLength(length) && + (isArray(object) || isString(object) || isArguments(object))) { + return baseTimes(length, String); } - } + return null; + } - var applyEach = applyEach$1(eachOf); + /** Used as references for various `Number` constants. */ + var MAX_SAFE_INTEGER$1 = 9007199254740991; + + /** Used to detect unsigned integer values. */ + var reIsUint = /^(?:0|[1-9]\d*)$/; + + /** + * Checks if `value` is a valid array-like index. + * + * @private + * @param {*} value The value to check. + * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index. + * @returns {boolean} Returns `true` if `value` is a valid index, else `false`. + */ + function isIndex(value, length) { + value = (typeof value == 'number' || reIsUint.test(value)) ? +value : -1; + length = length == null ? MAX_SAFE_INTEGER$1 : length; + return value > -1 && value % 1 == 0 && value < length; + } - var _setImmediate = typeof setImmediate === 'function' && setImmediate; + /** Used for built-in method references. */ + var objectProto$4 = Object.prototype; + + /** + * Checks if `value` is likely a prototype object. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a prototype, else `false`. + */ + function isPrototype(value) { + var Ctor = value && value.constructor, + proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto$4; + + return value === proto; + } - var _delay; - if (_setImmediate) { - _delay = function (fn) { - // not a direct alias for IE10 compatibility - _setImmediate(fn); - }; - } else if (typeof process === 'object' && typeof process.nextTick === 'function') { - _delay = process.nextTick; - } else { - _delay = function (fn) { - setTimeout(fn, 0); - }; - } + /** + * Creates an array of the own enumerable property names of `object`. + * + * **Note:** Non-object values are coerced to objects. See the + * [ES spec](http://ecma-international.org/ecma-262/6.0/#sec-object.keys) + * for more details. + * + * @static + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.keys(new Foo); + * // => ['a', 'b'] (iteration order is not guaranteed) + * + * _.keys('hi'); + * // => ['0', '1'] + */ + function keys(object) { + var isProto = isPrototype(object); + if (!(isProto || isArrayLike(object))) { + return baseKeys(object); + } + var indexes = indexKeys(object), + skipIndexes = !!indexes, + result = indexes || [], + length = result.length; + + for (var key in object) { + if (baseHas(object, key) && + !(skipIndexes && (key == 'length' || isIndex(key, length))) && + !(isProto && key == 'constructor')) { + result.push(key); + } + } + return result; + } - var setImmediate$1 = _delay; + function keyIterator(coll) { + var i = -1; + var len; + if (isArrayLike(coll)) { + len = coll.length; + return function next() { + i++; + return i < len ? i : null; + }; + } else { + var okeys = keys(coll); + len = okeys.length; + return function next() { + i++; + return i < len ? okeys[i] : null; + }; + } + } - function eachOfSeries(obj, iterator, callback) { - callback = once(callback || noop); - obj = obj || []; - var nextKey = keyIterator(obj); - var key = nextKey(); + function onlyOnce(fn) { + return function () { + if (fn === null) throw new Error("Callback was already called."); + fn.apply(this, arguments); + fn = null; + }; + } - function iterate() { - var sync = true; - if (key === null) { - return callback(null); - } - iterator(obj[key], key, onlyOnce(function (err) { - if (err) { - callback(err); - } else { - key = nextKey(); - if (key === null) { - return callback(null); - } else { - if (sync) { - setImmediate$1(iterate); - } else { - iterate(); - } - } - } - })); - sync = false; + function _eachOfLimit(limit) { + return function (obj, iterator, callback) { + callback = once(callback || noop); + obj = obj || []; + var nextKey = keyIterator(obj); + if (limit <= 0) { + return callback(null); + } + var done = false; + var running = 0; + var errored = false; + + (function replenish() { + if (done && running <= 0) { + return callback(null); + } + + while (running < limit && !errored) { + var key = nextKey(); + if (key === null) { + done = true; + if (running <= 0) { + callback(null); + } + return; + } + running += 1; + iterator(obj[key], key, onlyOnce(function (err) { + running -= 1; + if (err) { + callback(err); + errored = true; + } else { + replenish(); + } + })); + } + })(); + }; + } + + function eachOfLimit(obj, limit, iterator, cb) { + _eachOfLimit(limit)(obj, iterator, cb); + } + + function doLimit(fn, limit) { + return function (iterable, iterator, callback) { + return fn(iterable, limit, iterator, callback); + }; + } + + var eachOf = doLimit(eachOfLimit, Infinity); + + var applyEach = applyEach$1(eachOf); + + var eachOfSeries = doLimit(eachOfLimit, 1); + + var applyEachSeries = applyEach$1(eachOfSeries); + + var apply$1 = rest(function (fn, args) { + return rest(function (callArgs) { + return fn.apply(null, args.concat(callArgs)); + }); + }); + + function asyncify(func) { + return rest(function (args) { + var callback = args.pop(); + var result; + try { + result = func.apply(this, args); + } catch (e) { + return callback(e); + } + // if result is Promise object + if (isObject(result) && typeof result.then === 'function') { + result.then(function (value) { + callback(null, value); + })['catch'](function (err) { + callback(err.message ? err : new Error(err)); + }); + } else { + callback(null, result); + } + }); + } + + /** + * A specialized version of `_.forEach` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} array The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns `array`. + */ + function arrayEach(array, iteratee) { + var index = -1, + length = array.length; + + while (++index < length) { + if (iteratee(array[index], index, array) === false) { + break; + } } - iterate(); - } + return array; + } - var applyEachSeries = applyEach$1(eachOfSeries); + /** + * This method returns the first argument given to it. + * + * @static + * @memberOf _ + * @category Util + * @param {*} value Any value. + * @returns {*} Returns `value`. + * @example + * + * var object = { 'user': 'fred' }; + * + * _.identity(object) === object; + * // => true + */ + function identity(value) { + return value; + } - var apply = rest(function (fn, args) { - return rest(function (callArgs) { - return fn.apply(null, args.concat(callArgs)); - }); - }); - - function asyncify(func) { - return rest(function (args) { - var callback = args.pop(); - var result; - try { - result = func.apply(this, args); - } catch (e) { - return callback(e); - } - // if result is Promise object - if (isObject(result) && typeof result.then === 'function') { - result.then(function (value) { - callback(null, value); - })['catch'](function (err) { - callback(err.message ? err : new Error(err)); - }); - } else { - callback(null, result); + /** + * Casts `value` to `identity` if it's not a function. + * + * @private + * @param {*} value The value to inspect. + * @returns {Array} Returns the array-like object. + */ + function baseCastFunction(value) { + return typeof value == 'function' ? value : identity; + } + + /** + * Creates a base function for methods like `_.forIn`. + * + * @private + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new base function. + */ + function createBaseFor(fromRight) { + return function(object, iteratee, keysFunc) { + var index = -1, + iterable = Object(object), + props = keysFunc(object), + length = props.length; + + while (length--) { + var key = props[fromRight ? length : ++index]; + if (iteratee(iterable[key], key, iterable) === false) { + break; } - }); - } - - /** - * A specialized version of `_.forEach` for arrays without support for - * iteratee shorthands. - * - * @private - * @param {Array} array The array to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @returns {Array} Returns `array`. - */ - function arrayEach(array, iteratee) { - var index = -1, - length = array.length; - - while (++index < length) { - if (iteratee(array[index], index, array) === false) { - break; + } + return object; + }; + } + + /** + * The base implementation of `baseForIn` and `baseForOwn` which iterates + * over `object` properties returned by `keysFunc` invoking `iteratee` for + * each property. Iteratee functions may exit iteration early by explicitly + * returning `false`. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {Function} keysFunc The function to get the keys of `object`. + * @returns {Object} Returns `object`. + */ + var baseFor = createBaseFor(); + + /** + * The base implementation of `_.forOwn` without support for iteratee shorthands. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Object} Returns `object`. + */ + function baseForOwn(object, iteratee) { + return object && baseFor(object, iteratee, keys); + } + + /** + * Iterates over own enumerable properties of an object invoking `iteratee` + * for each property. The iteratee is invoked with three arguments: + * (value, key, object). Iteratee functions may exit iteration early by + * explicitly returning `false`. + * + * @static + * @memberOf _ + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forOwn(new Foo, function(value, key) { + * console.log(key); + * }); + * // => logs 'a' then 'b' (iteration order is not guaranteed) + */ + function forOwn(object, iteratee) { + return object && baseForOwn(object, baseCastFunction(iteratee)); + } + + /** + * Gets the index at which the first occurrence of `NaN` is found in `array`. + * + * @private + * @param {Array} array The array to search. + * @param {number} fromIndex The index to search from. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {number} Returns the index of the matched `NaN`, else `-1`. + */ + function indexOfNaN(array, fromIndex, fromRight) { + var length = array.length, + index = fromIndex + (fromRight ? 0 : -1); + + while ((fromRight ? index-- : ++index < length)) { + var other = array[index]; + if (other !== other) { + return index; + } } + return -1; } - return array; - } - - /** - * A specialized version of `_.every` for arrays without support for - * iteratee shorthands. - * - * @private - * @param {Array} array The array to iterate over. - * @param {Function} predicate The function invoked per iteration. - * @returns {boolean} Returns `true` if all elements pass the predicate check, else `false`. - */ - function arrayEvery(array, predicate) { - var index = -1, - length = array.length; - - while (++index < length) { - if (!predicate(array[index], index, array)) { - return false; + + /** + * The base implementation of `_.indexOf` without `fromIndex` bounds checks. + * + * @private + * @param {Array} array The array to search. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function baseIndexOf(array, value, fromIndex) { + if (value !== value) { + return indexOfNaN(array, fromIndex); } + var index = fromIndex - 1, + length = array.length; + + while (++index < length) { + if (array[index] === value) { + return index; + } + } + return -1; + } + + /* Built-in method references for those with the same name as other `lodash` methods. */ + var nativeMax$1 = Math.max; + + /** + * Gets the index at which the first occurrence of `value` is found in `array` + * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero) + * for equality comparisons. If `fromIndex` is negative, it's used as the offset + * from the end of `array`. + * + * @static + * @memberOf _ + * @category Array + * @param {Array} array The array to search. + * @param {*} value The value to search for. + * @param {number} [fromIndex=0] The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.indexOf([1, 2, 1, 2], 2); + * // => 1 + * + * // Search from the `fromIndex`. + * _.indexOf([1, 2, 1, 2], 2, 2); + * // => 3 + */ + function indexOf(array, value, fromIndex) { + var length = array ? array.length : 0; + if (!length) { + return -1; + } + fromIndex = toInteger(fromIndex); + if (fromIndex < 0) { + fromIndex = nativeMax$1(length + fromIndex, 0); + } + return baseIndexOf(array, value, fromIndex); } - return true; - } - - /** - * Creates a base function for methods like `_.forIn`. - * - * @private - * @param {boolean} [fromRight] Specify iterating from right to left. - * @returns {Function} Returns the new base function. - */ - function createBaseFor(fromRight) { - return function(object, iteratee, keysFunc) { + + function auto (tasks, concurrency, callback) { + if (typeof concurrency === 'function') { + // concurrency is optional, shift the args. + callback = concurrency; + concurrency = null; + } + callback = once(callback || noop); + var keys$$ = keys(tasks); + var numTasks = keys$$.length; + if (!numTasks) { + return callback(null); + } + if (!concurrency) { + concurrency = numTasks; + } + + var results = {}; + var runningTasks = 0; + var hasError = false; + + var listeners = {}; + + var readyTasks = []; + + forOwn(tasks, function (task, key) { + if (!isArray(task)) { + // no dependencies + enqueueTask(key, [task]); + return; + } + + var dependencies = task.slice(0, task.length - 1); + var remainingDependencies = dependencies.length; + + checkForDeadlocks(); + + function checkForDeadlocks() { + var len = dependencies.length; + var dep; + while (len--) { + if (!(dep = tasks[dependencies[len]])) { + throw new Error('async.auto task `' + key + '` has non-existent dependency in ' + dependencies.join(', ')); + } + if (isArray(dep) && indexOf(dep, key) >= 0) { + throw new Error('async.auto task `' + key + '`Has cyclic dependencies'); + } + } + } + + arrayEach(dependencies, function (dependencyName) { + addListener(dependencyName, function () { + remainingDependencies--; + if (remainingDependencies === 0) { + enqueueTask(key, task); + } + }); + }); + }); + + processQueue(); + + function enqueueTask(key, task) { + readyTasks.push(function () { + runTask(key, task); + }); + } + + function processQueue() { + if (readyTasks.length === 0 && runningTasks === 0) { + return callback(null, results); + } + while (readyTasks.length && runningTasks < concurrency) { + var run = readyTasks.shift(); + run(); + } + } + + function addListener(taskName, fn) { + var taskListeners = listeners[taskName]; + if (!taskListeners) { + taskListeners = listeners[taskName] = []; + } + + taskListeners.push(fn); + } + + function taskComplete(taskName) { + var taskListeners = listeners[taskName] || []; + arrayEach(taskListeners, function (fn) { + fn(); + }); + processQueue(); + } + + function runTask(key, task) { + if (hasError) return; + + var taskCallback = onlyOnce(rest(function (err, args) { + runningTasks--; + if (args.length <= 1) { + args = args[0]; + } + if (err) { + var safeResults = {}; + forOwn(results, function (val, rkey) { + safeResults[rkey] = val; + }); + safeResults[key] = args; + hasError = true; + listeners = []; + + callback(err, safeResults); + } else { + results[key] = args; + taskComplete(key); + } + })); + + runningTasks++; + var taskFn = task[task.length - 1]; + if (task.length > 1) { + taskFn(results, taskCallback); + } else { + taskFn(taskCallback); + } + } + } + + /** + * A specialized version of `_.map` for arrays without support for iteratee + * shorthands. + * + * @private + * @param {Array} array The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns the new mapped array. + */ + function arrayMap(array, iteratee) { var index = -1, - iterable = Object(object), - props = keysFunc(object), - length = props.length; + length = array.length, + result = Array(length); + while (++index < length) { + result[index] = iteratee(array[index], index, array); + } + return result; + } + + /** + * Removes all key-value entries from the stack. + * + * @private + * @name clear + * @memberOf Stack + */ + function stackClear() { + this.__data__ = { 'array': [], 'map': null }; + } + + /** + * Performs a [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero) + * comparison between two values to determine if they are equivalent. + * + * @static + * @memberOf _ + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + * @example + * + * var object = { 'user': 'fred' }; + * var other = { 'user': 'fred' }; + * + * _.eq(object, object); + * // => true + * + * _.eq(object, other); + * // => false + * + * _.eq('a', 'a'); + * // => true + * + * _.eq('a', Object('a')); + * // => false + * + * _.eq(NaN, NaN); + * // => true + */ + function eq(value, other) { + return value === other || (value !== value && other !== other); + } + + /** + * Gets the index at which the first occurrence of `key` is found in `array` + * of key-value pairs. + * + * @private + * @param {Array} array The array to search. + * @param {*} key The key to search for. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function assocIndexOf(array, key) { + var length = array.length; while (length--) { - var key = props[fromRight ? length : ++index]; - if (iteratee(iterable[key], key, iterable) === false) { - break; + if (eq(array[length][0], key)) { + return length; } } - return object; - }; - } - - /** - * The base implementation of `baseForIn` and `baseForOwn` which iterates - * over `object` properties returned by `keysFunc` invoking `iteratee` for - * each property. Iteratee functions may exit iteration early by explicitly - * returning `false`. - * - * @private - * @param {Object} object The object to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @param {Function} keysFunc The function to get the keys of `object`. - * @returns {Object} Returns `object`. - */ - var baseFor = createBaseFor(); - - /** - * The base implementation of `_.forOwn` without support for iteratee shorthands. - * - * @private - * @param {Object} object The object to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @returns {Object} Returns `object`. - */ - function baseForOwn(object, iteratee) { - return object && baseFor(object, iteratee, keys); - } - - /** - * This method returns the first argument given to it. - * - * @static - * @memberOf _ - * @category Util - * @param {*} value Any value. - * @returns {*} Returns `value`. - * @example - * - * var object = { 'user': 'fred' }; - * - * _.identity(object) === object; - * // => true - */ - function identity(value) { - return value; - } - - /** - * Converts `value` to a function if it's not one. - * - * @private - * @param {*} value The value to process. - * @returns {Function} Returns the function. - */ - function toFunction(value) { - return typeof value == 'function' ? value : identity; - } - - /** - * Iterates over own enumerable properties of an object invoking `iteratee` - * for each property. The iteratee is invoked with three arguments: - * (value, key, object). Iteratee functions may exit iteration early by - * explicitly returning `false`. - * - * @static - * @memberOf _ - * @category Object - * @param {Object} object The object to iterate over. - * @param {Function} [iteratee=_.identity] The function invoked per iteration. - * @returns {Object} Returns `object`. - * @example - * - * function Foo() { - * this.a = 1; - * this.b = 2; - * } - * - * Foo.prototype.c = 3; - * - * _.forOwn(new Foo, function(value, key) { - * console.log(key); - * }); - * // => logs 'a' then 'b' (iteration order is not guaranteed) - */ - function forOwn(object, iteratee) { - return object && baseForOwn(object, toFunction(iteratee)); - } - - /** - * Gets the index at which the first occurrence of `NaN` is found in `array`. - * - * @private - * @param {Array} array The array to search. - * @param {number} fromIndex The index to search from. - * @param {boolean} [fromRight] Specify iterating from right to left. - * @returns {number} Returns the index of the matched `NaN`, else `-1`. - */ - function indexOfNaN(array, fromIndex, fromRight) { - var length = array.length, - index = fromIndex + (fromRight ? 0 : -1); - - while ((fromRight ? index-- : ++index < length)) { - var other = array[index]; - if (other !== other) { - return index; + return -1; + } + + /** Used for built-in method references. */ + var arrayProto = Array.prototype; + + /** Built-in value references. */ + var splice = arrayProto.splice; + + /** + * Removes `key` and its value from the associative array. + * + * @private + * @param {Array} array The array to query. + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function assocDelete(array, key) { + var index = assocIndexOf(array, key); + if (index < 0) { + return false; + } + var lastIndex = array.length - 1; + if (index == lastIndex) { + array.pop(); + } else { + splice.call(array, index, 1); } + return true; } - return -1; - } - - /** - * The base implementation of `_.indexOf` without `fromIndex` bounds checks. - * - * @private - * @param {Array} array The array to search. - * @param {*} value The value to search for. - * @param {number} fromIndex The index to search from. - * @returns {number} Returns the index of the matched value, else `-1`. - */ - function baseIndexOf(array, value, fromIndex) { - if (value !== value) { - return indexOfNaN(array, fromIndex); - } - var index = fromIndex - 1, - length = array.length; - - while (++index < length) { - if (array[index] === value) { - return index; + + /** + * Removes `key` and its value from the stack. + * + * @private + * @name delete + * @memberOf Stack + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function stackDelete(key) { + var data = this.__data__, + array = data.array; + + return array ? assocDelete(array, key) : data.map['delete'](key); + } + + /** + * Gets the associative array value for `key`. + * + * @private + * @param {Array} array The array to query. + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function assocGet(array, key) { + var index = assocIndexOf(array, key); + return index < 0 ? undefined : array[index][1]; + } + + /** + * Gets the stack value for `key`. + * + * @private + * @name get + * @memberOf Stack + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function stackGet(key) { + var data = this.__data__, + array = data.array; + + return array ? assocGet(array, key) : data.map.get(key); + } + + /** + * Checks if an associative array value for `key` exists. + * + * @private + * @param {Array} array The array to query. + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function assocHas(array, key) { + return assocIndexOf(array, key) > -1; + } + + /** + * Checks if a stack value for `key` exists. + * + * @private + * @name has + * @memberOf Stack + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function stackHas(key) { + var data = this.__data__, + array = data.array; + + return array ? assocHas(array, key) : data.map.has(key); + } + + /** + * Checks if `value` is a host object in IE < 9. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a host object, else `false`. + */ + function isHostObject(value) { + // Many host objects are `Object` objects that can coerce to strings + // despite having improperly defined `toString` methods. + var result = false; + if (value != null && typeof value.toString != 'function') { + try { + result = !!(value + ''); + } catch (e) {} } + return result; } - return -1; - } - - /* Built-in method references for those with the same name as other `lodash` methods. */ - var nativeMax$1 = Math.max; - - /** - * Gets the index at which the first occurrence of `value` is found in `array` - * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero) - * for equality comparisons. If `fromIndex` is negative, it's used as the offset - * from the end of `array`. - * - * @static - * @memberOf _ - * @category Array - * @param {Array} array The array to search. - * @param {*} value The value to search for. - * @param {number} [fromIndex=0] The index to search from. - * @returns {number} Returns the index of the matched value, else `-1`. - * @example - * - * _.indexOf([1, 2, 1, 2], 2); - * // => 1 - * - * // Search from the `fromIndex`. - * _.indexOf([1, 2, 1, 2], 2, 2); - * // => 3 - */ - function indexOf(array, value, fromIndex) { - var length = array ? array.length : 0; - if (!length) { - return -1; + + /** Used to match `RegExp` [syntax characters](http://ecma-international.org/ecma-262/6.0/#sec-patterns). */ + var reRegExpChar = /[\\^$.*+?()[\]{}|]/g; + + /** Used to detect host constructors (Safari > 5). */ + var reIsHostCtor = /^\[object .+?Constructor\]$/; + + /** Used for built-in method references. */ + var objectProto$6 = Object.prototype; + + /** Used to resolve the decompiled source of functions. */ + var funcToString = Function.prototype.toString; + + /** Used to check objects for own properties. */ + var hasOwnProperty$2 = objectProto$6.hasOwnProperty; + + /** Used to detect if a method is native. */ + var reIsNative = RegExp('^' + + funcToString.call(hasOwnProperty$2).replace(reRegExpChar, '\\$&') + .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$' + ); + + /** + * Checks if `value` is a native function. + * + * @static + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a native function, else `false`. + * @example + * + * _.isNative(Array.prototype.push); + * // => true + * + * _.isNative(_); + * // => false + */ + function isNative(value) { + if (value == null) { + return false; + } + if (isFunction(value)) { + return reIsNative.test(funcToString.call(value)); + } + return isObjectLike(value) && + (isHostObject(value) ? reIsNative : reIsHostCtor).test(value); } - fromIndex = toInteger(fromIndex); - if (fromIndex < 0) { - fromIndex = nativeMax$1(length + fromIndex, 0); + + /** + * Gets the native function at `key` of `object`. + * + * @private + * @param {Object} object The object to query. + * @param {string} key The key of the method to get. + * @returns {*} Returns the function if it's native, else `undefined`. + */ + function getNative(object, key) { + var value = object[key]; + return isNative(value) ? value : undefined; + } + + /* Built-in method references that are verified to be native. */ + var nativeCreate = getNative(Object, 'create'); + + /** Used for built-in method references. */ + var objectProto$5 = Object.prototype; + + /** + * Creates an hash object. + * + * @private + * @constructor + * @returns {Object} Returns the new hash object. + */ + function Hash() {} + + // Avoid inheriting from `Object.prototype` when possible. + Hash.prototype = nativeCreate ? nativeCreate(null) : objectProto$5; + + /** + * Checks if `value` is a global object. + * + * @private + * @param {*} value The value to check. + * @returns {null|Object} Returns `value` if it's a global object, else `null`. + */ + function checkGlobal(value) { + return (value && value.Object === Object) ? value : null; + } + + /** Used to determine if values are of the language type `Object`. */ + var objectTypes = { + 'function': true, + 'object': true + }; + + /** Detect free variable `exports`. */ + var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) + ? exports + : undefined; + + /** Detect free variable `module`. */ + var freeModule = (objectTypes[typeof module] && module && !module.nodeType) + ? module + : undefined; + + /** Detect free variable `global` from Node.js. */ + var freeGlobal = checkGlobal(freeExports && freeModule && typeof global == 'object' && global); + + /** Detect free variable `self`. */ + var freeSelf = checkGlobal(objectTypes[typeof self] && self); + + /** Detect free variable `window`. */ + var freeWindow = checkGlobal(objectTypes[typeof window] && window); + + /** Detect `this` as the global object. */ + var thisGlobal = checkGlobal(objectTypes[typeof this] && this); + + /** + * Used as a reference to the global object. + * + * The `this` value is used if it's the global object to avoid Greasemonkey's + * restricted `window` object, otherwise the `window` object is used. + */ + var root = freeGlobal || + ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || + freeSelf || thisGlobal || Function('return this')(); + + /* Built-in method references that are verified to be native. */ + var Map = getNative(root, 'Map'); + + /** + * Removes all key-value entries from the map. + * + * @private + * @name clear + * @memberOf MapCache + */ + function mapClear() { + this.__data__ = { + 'hash': new Hash, + 'map': Map ? new Map : [], + 'string': new Hash + }; } - return baseIndexOf(array, value, fromIndex); - } - function auto (tasks, concurrency, callback) { - if (typeof arguments[1] === 'function') { - // concurrency is optional, shift the args. - callback = concurrency; - concurrency = null; + /** Used for built-in method references. */ + var objectProto$7 = Object.prototype; + + /** Used to check objects for own properties. */ + var hasOwnProperty$3 = objectProto$7.hasOwnProperty; + + /** + * Checks if a hash value for `key` exists. + * + * @private + * @param {Object} hash The hash to query. + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function hashHas(hash, key) { + return nativeCreate ? hash[key] !== undefined : hasOwnProperty$3.call(hash, key); + } + + /** + * Removes `key` and its value from the hash. + * + * @private + * @param {Object} hash The hash to modify. + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function hashDelete(hash, key) { + return hashHas(hash, key) && delete hash[key]; + } + + /** + * Checks if `value` is suitable for use as unique object key. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is suitable, else `false`. + */ + function isKeyable(value) { + var type = typeof value; + return type == 'number' || type == 'boolean' || + (type == 'string' && value != '__proto__') || value == null; + } + + /** + * Removes `key` and its value from the map. + * + * @private + * @name delete + * @memberOf MapCache + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function mapDelete(key) { + var data = this.__data__; + if (isKeyable(key)) { + return hashDelete(typeof key == 'string' ? data.string : data.hash, key); } - callback = once(callback || noop); - var keys$$ = keys(tasks); - var remainingTasks = keys$$.length; - if (!remainingTasks) { - return callback(null); + return Map ? data.map['delete'](key) : assocDelete(data.map, key); + } + + /** Used to stand-in for `undefined` hash values. */ + var HASH_UNDEFINED = '__lodash_hash_undefined__'; + + /** Used for built-in method references. */ + var objectProto$8 = Object.prototype; + + /** Used to check objects for own properties. */ + var hasOwnProperty$4 = objectProto$8.hasOwnProperty; + + /** + * Gets the hash value for `key`. + * + * @private + * @param {Object} hash The hash to query. + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function hashGet(hash, key) { + if (nativeCreate) { + var result = hash[key]; + return result === HASH_UNDEFINED ? undefined : result; } - if (!concurrency) { - concurrency = remainingTasks; + return hasOwnProperty$4.call(hash, key) ? hash[key] : undefined; + } + + /** + * Gets the map value for `key`. + * + * @private + * @name get + * @memberOf MapCache + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function mapGet(key) { + var data = this.__data__; + if (isKeyable(key)) { + return hashGet(typeof key == 'string' ? data.string : data.hash, key); } + return Map ? data.map.get(key) : assocGet(data.map, key); + } - var results = {}; - var runningTasks = 0; - var hasError = false; + /** + * Checks if a map value for `key` exists. + * + * @private + * @name has + * @memberOf MapCache + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function mapHas(key) { + var data = this.__data__; + if (isKeyable(key)) { + return hashHas(typeof key == 'string' ? data.string : data.hash, key); + } + return Map ? data.map.has(key) : assocHas(data.map, key); + } - var listeners = []; - function addListener(fn) { - listeners.unshift(fn); + /** + * Sets the associative array `key` to `value`. + * + * @private + * @param {Array} array The array to modify. + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + */ + function assocSet(array, key, value) { + var index = assocIndexOf(array, key); + if (index < 0) { + array.push([key, value]); + } else { + array[index][1] = value; } - function removeListener(fn) { - var idx = indexOf(listeners, fn); - if (idx >= 0) listeners.splice(idx, 1); + } + + /** Used to stand-in for `undefined` hash values. */ + var HASH_UNDEFINED$1 = '__lodash_hash_undefined__'; + + /** + * Sets the hash `key` to `value`. + * + * @private + * @param {Object} hash The hash to modify. + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + */ + function hashSet(hash, key, value) { + hash[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED$1 : value; + } + + /** + * Sets the map `key` to `value`. + * + * @private + * @name set + * @memberOf MapCache + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the map cache object. + */ + function mapSet(key, value) { + var data = this.__data__; + if (isKeyable(key)) { + hashSet(typeof key == 'string' ? data.string : data.hash, key, value); + } else if (Map) { + data.map.set(key, value); + } else { + assocSet(data.map, key, value); } - function taskComplete() { - remainingTasks--; - arrayEach(listeners.slice(), function (fn) { - fn(); - }); + return this; + } + + /** + * Creates a map cache object to store key-value pairs. + * + * @private + * @constructor + * @param {Array} [values] The values to cache. + */ + function MapCache(values) { + var index = -1, + length = values ? values.length : 0; + + this.clear(); + while (++index < length) { + var entry = values[index]; + this.set(entry[0], entry[1]); } + } - addListener(function () { - if (!remainingTasks) { - callback(null, results); - } - }); + // Add functions to the `MapCache`. + MapCache.prototype.clear = mapClear; + MapCache.prototype['delete'] = mapDelete; + MapCache.prototype.get = mapGet; + MapCache.prototype.has = mapHas; + MapCache.prototype.set = mapSet; + + /** Used as the size to enable large array optimizations. */ + var LARGE_ARRAY_SIZE = 200; + + /** + * Sets the stack `key` to `value`. + * + * @private + * @name set + * @memberOf Stack + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the stack cache object. + */ + function stackSet(key, value) { + var data = this.__data__, + array = data.array; + + if (array) { + if (array.length < (LARGE_ARRAY_SIZE - 1)) { + assocSet(array, key, value); + } else { + data.array = null; + data.map = new MapCache(array); + } + } + var map = data.map; + if (map) { + map.set(key, value); + } + return this; + } - arrayEach(keys$$, function (k) { - if (hasError) return; - var task = isArray(tasks[k]) ? tasks[k] : [tasks[k]]; - var taskCallback = rest(function (err, args) { - runningTasks--; - if (args.length <= 1) { - args = args[0]; - } - if (err) { - var safeResults = {}; - forOwn(results, function (val, rkey) { - safeResults[rkey] = val; - }); - safeResults[k] = args; - hasError = true; - - callback(err, safeResults); - } else { - results[k] = args; - setImmediate$1(taskComplete); - } - }); - var requires = task.slice(0, task.length - 1); - // prevent dead-locks - var len = requires.length; - var dep; - while (len--) { - if (!(dep = tasks[requires[len]])) { - throw new Error('Has non-existent dependency in ' + requires.join(', ')); - } - if (isArray(dep) && indexOf(dep, k) >= 0) { - throw new Error('Has cyclic dependencies'); - } - } - function ready() { - return runningTasks < concurrency && !baseHas(results, k) && arrayEvery(requires, function (x) { - return baseHas(results, x); - }); - } - if (ready()) { - runningTasks++; - task[task.length - 1](taskCallback, results); - } else { - addListener(listener); - } - function listener() { - if (ready()) { - runningTasks++; - removeListener(listener); - task[task.length - 1](taskCallback, results); - } - } - }); - } - - /** - * A specialized version of `_.map` for arrays without support for iteratee - * shorthands. - * - * @private - * @param {Array} array The array to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @returns {Array} Returns the new mapped array. - */ - function arrayMap(array, iteratee) { - var index = -1, - length = array.length, - result = Array(length); - - while (++index < length) { - result[index] = iteratee(array[index], index, array); - } - return result; - } - - function queue$1(worker, concurrency, payload) { - if (concurrency == null) { - concurrency = 1; - } else if (concurrency === 0) { - throw new Error('Concurrency must not be zero'); + /** + * Creates a stack cache object to store key-value pairs. + * + * @private + * @constructor + * @param {Array} [values] The values to cache. + */ + function Stack(values) { + var index = -1, + length = values ? values.length : 0; + + this.clear(); + while (++index < length) { + var entry = values[index]; + this.set(entry[0], entry[1]); } - function _insert(q, data, pos, callback) { - if (callback != null && typeof callback !== 'function') { - throw new Error('task callback must be a function'); - } - q.started = true; - if (!isArray(data)) { - data = [data]; - } - if (data.length === 0 && q.idle()) { - // call drain immediately if there are no tasks - return setImmediate$1(function () { - q.drain(); - }); - } - arrayEach(data, function (task) { - var item = { - data: task, - callback: callback || noop - }; - - if (pos) { - q.tasks.unshift(item); - } else { - q.tasks.push(item); - } - - if (q.tasks.length === q.concurrency) { - q.saturated(); - } - }); - setImmediate$1(q.process); + } + + // Add functions to the `Stack` cache. + Stack.prototype.clear = stackClear; + Stack.prototype['delete'] = stackDelete; + Stack.prototype.get = stackGet; + Stack.prototype.has = stackHas; + Stack.prototype.set = stackSet; + + /** Used for built-in method references. */ + var objectProto$9 = Object.prototype; + + /** Used to check objects for own properties. */ + var hasOwnProperty$5 = objectProto$9.hasOwnProperty; + + /** + * Assigns `value` to `key` of `object` if the existing value is not equivalent + * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero) + * for equality comparisons. + * + * @private + * @param {Object} object The object to modify. + * @param {string} key The key of the property to assign. + * @param {*} value The value to assign. + */ + function assignValue(object, key, value) { + var objValue = object[key]; + if (!(hasOwnProperty$5.call(object, key) && eq(objValue, value)) || + (value === undefined && !(key in object))) { + object[key] = value; + } + } + + /** + * This function is like `copyObject` except that it accepts a function to + * customize copied values. + * + * @private + * @param {Object} source The object to copy properties from. + * @param {Array} props The property names to copy. + * @param {Object} [object={}] The object to copy properties to. + * @param {Function} [customizer] The function to customize copied values. + * @returns {Object} Returns `object`. + */ + function copyObjectWith(source, props, object, customizer) { + object || (object = {}); + + var index = -1, + length = props.length; + + while (++index < length) { + var key = props[index]; + + var newValue = customizer + ? customizer(object[key], source[key], key, object, source) + : source[key]; + + assignValue(object, key, newValue); } - function _next(q, tasks) { - return function () { - workers -= 1; - - var removed = false; - var args = arguments; - arrayEach(tasks, function (task) { - arrayEach(workersList, function (worker, index) { - if (worker === task && !removed) { - workersList.splice(index, 1); - removed = true; - } - }); - - task.callback.apply(task, args); - }); - if (q.tasks.length + workers === 0) { - q.drain(); - } - q.process(); - }; + return object; + } + + /** + * Copies properties of `source` to `object`. + * + * @private + * @param {Object} source The object to copy properties from. + * @param {Array} props The property names to copy. + * @param {Object} [object={}] The object to copy properties to. + * @returns {Object} Returns `object`. + */ + function copyObject(source, props, object) { + return copyObjectWith(source, props, object); + } + + /** + * The base implementation of `_.assign` without support for multiple sources + * or `customizer` functions. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @returns {Object} Returns `object`. + */ + function baseAssign(object, source) { + return object && copyObject(source, keys(source), object); + } + + /** + * Creates a clone of `buffer`. + * + * @private + * @param {Buffer} buffer The buffer to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Buffer} Returns the cloned buffer. + */ + function cloneBuffer(buffer, isDeep) { + if (isDeep) { + return buffer.slice(); } + var result = new buffer.constructor(buffer.length); + buffer.copy(result); + return result; + } + + /** + * Copies the values of `source` to `array`. + * + * @private + * @param {Array} source The array to copy values from. + * @param {Array} [array=[]] The array to copy values to. + * @returns {Array} Returns `array`. + */ + function copyArray(source, array) { + var index = -1, + length = source.length; - var workers = 0; - var workersList = []; - var q = { - tasks: [], - concurrency: concurrency, - payload: payload, - saturated: noop, - empty: noop, - drain: noop, - started: false, - paused: false, - push: function (data, callback) { - _insert(q, data, false, callback); - }, - kill: function () { - q.drain = noop; - q.tasks = []; - }, - unshift: function (data, callback) { - _insert(q, data, true, callback); - }, - process: function () { - while (!q.paused && workers < q.concurrency && q.tasks.length) { - - var tasks = q.payload ? q.tasks.splice(0, q.payload) : q.tasks.splice(0, q.tasks.length); - - var data = arrayMap(tasks, baseProperty('data')); - - if (q.tasks.length === 0) { - q.empty(); - } - workers += 1; - workersList.push(tasks[0]); - var cb = onlyOnce(_next(q, tasks)); - worker(data, cb); - } - }, - length: function () { - return q.tasks.length; - }, - running: function () { - return workers; - }, - workersList: function () { - return workersList; - }, - idle: function () { - return q.tasks.length + workers === 0; - }, - pause: function () { - q.paused = true; - }, - resume: function () { - if (q.paused === false) { - return; - } - q.paused = false; - var resumeCount = Math.min(q.concurrency, q.tasks.length); - // Need to call q.process once per concurrent - // worker to preserve full concurrency after pause - for (var w = 1; w <= resumeCount; w++) { - setImmediate$1(q.process); - } + array || (array = Array(length)); + while (++index < length) { + array[index] = source[index]; + } + return array; + } + + /** Built-in value references. */ + var getOwnPropertySymbols = Object.getOwnPropertySymbols; + + /** + * Creates an array of the own symbol properties of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of symbols. + */ + var getSymbols = getOwnPropertySymbols || function() { + return []; + }; + + /** + * Copies own symbol properties of `source` to `object`. + * + * @private + * @param {Object} source The object to copy symbols from. + * @param {Object} [object={}] The object to copy symbols to. + * @returns {Object} Returns `object`. + */ + function copySymbols(source, object) { + return copyObject(source, getSymbols(source), object); + } + + /* Built-in method references that are verified to be native. */ + var Set = getNative(root, 'Set'); + + /* Built-in method references that are verified to be native. */ + var WeakMap = getNative(root, 'WeakMap'); + + var mapTag$1 = '[object Map]'; + var objectTag$1 = '[object Object]'; + var setTag$1 = '[object Set]'; + var weakMapTag$1 = '[object WeakMap]'; + /** Used for built-in method references. */ + var objectProto$10 = Object.prototype; + + /** Used to resolve the decompiled source of functions. */ + var funcToString$1 = Function.prototype.toString; + + /** + * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring) + * of values. + */ + var objectToString$3 = objectProto$10.toString; + + /** Used to detect maps, sets, and weakmaps. */ + var mapCtorString = Map ? funcToString$1.call(Map) : ''; + var setCtorString = Set ? funcToString$1.call(Set) : ''; + var weakMapCtorString = WeakMap ? funcToString$1.call(WeakMap) : ''; + /** + * Gets the `toStringTag` of `value`. + * + * @private + * @param {*} value The value to query. + * @returns {string} Returns the `toStringTag`. + */ + function getTag(value) { + return objectToString$3.call(value); + } + + // Fallback for IE 11 providing `toStringTag` values for maps, sets, and weakmaps. + if ((Map && getTag(new Map) != mapTag$1) || + (Set && getTag(new Set) != setTag$1) || + (WeakMap && getTag(new WeakMap) != weakMapTag$1)) { + getTag = function(value) { + var result = objectToString$3.call(value), + Ctor = result == objectTag$1 ? value.constructor : null, + ctorString = typeof Ctor == 'function' ? funcToString$1.call(Ctor) : ''; + + if (ctorString) { + switch (ctorString) { + case mapCtorString: return mapTag$1; + case setCtorString: return setTag$1; + case weakMapCtorString: return weakMapTag$1; } + } + return result; }; - return q; - } - - function cargo(worker, payload) { - return queue$1(worker, 1, payload); - } - - function reduce(arr, memo, iterator, cb) { - eachOfSeries(arr, function (x, i, cb) { - iterator(memo, x, function (err, v) { - memo = v; - cb(err); - }); - }, function (err) { - cb(err, memo); - }); - } - - function seq() /* functions... */{ - var fns = arguments; - return rest(function (args) { - var that = this; - - var cb = args[args.length - 1]; - if (typeof cb == 'function') { - args.pop(); - } else { - cb = noop; - } + } - reduce(fns, args, function (newargs, fn, cb) { - fn.apply(that, newargs.concat([rest(function (err, nextargs) { - cb(err, nextargs); - })])); - }, function (err, results) { - cb.apply(that, [err].concat(results)); - }); + var getTag$1 = getTag; + + /** Used for built-in method references. */ + var objectProto$11 = Object.prototype; + + /** Used to check objects for own properties. */ + var hasOwnProperty$6 = objectProto$11.hasOwnProperty; + + /** + * Initializes an array clone. + * + * @private + * @param {Array} array The array to clone. + * @returns {Array} Returns the initialized clone. + */ + function initCloneArray(array) { + var length = array.length, + result = array.constructor(length); + + // Add properties assigned by `RegExp#exec`. + if (length && typeof array[0] == 'string' && hasOwnProperty$6.call(array, 'index')) { + result.index = array.index; + result.input = array.input; + } + return result; + } + + /** Built-in value references. */ + var Uint8Array = root.Uint8Array; + + /** + * Creates a clone of `arrayBuffer`. + * + * @private + * @param {ArrayBuffer} arrayBuffer The array buffer to clone. + * @returns {ArrayBuffer} Returns the cloned array buffer. + */ + function cloneArrayBuffer(arrayBuffer) { + var result = new arrayBuffer.constructor(arrayBuffer.byteLength); + new Uint8Array(result).set(new Uint8Array(arrayBuffer)); + return result; + } + + /** + * Adds the key-value `pair` to `map`. + * + * @private + * @param {Object} map The map to modify. + * @param {Array} pair The key-value pair to add. + * @returns {Object} Returns `map`. + */ + function addMapEntry(map, pair) { + // Don't return `Map#set` because it doesn't return the map instance in IE 11. + map.set(pair[0], pair[1]); + return map; + } + + /** + * A specialized version of `_.reduce` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} array The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @param {boolean} [initAccum] Specify using the first element of `array` as the initial value. + * @returns {*} Returns the accumulated value. + */ + function arrayReduce(array, iteratee, accumulator, initAccum) { + var index = -1, + length = array.length; + + if (initAccum && length) { + accumulator = array[++index]; + } + while (++index < length) { + accumulator = iteratee(accumulator, array[index], index, array); + } + return accumulator; + } + + /** + * Converts `map` to an array. + * + * @private + * @param {Object} map The map to convert. + * @returns {Array} Returns the converted array. + */ + function mapToArray(map) { + var index = -1, + result = Array(map.size); + + map.forEach(function(value, key) { + result[++index] = [key, value]; }); - } + return result; + } - var reverse = Array.prototype.reverse; + /** + * Creates a clone of `map`. + * + * @private + * @param {Object} map The map to clone. + * @returns {Object} Returns the cloned map. + */ + function cloneMap(map) { + return arrayReduce(mapToArray(map), addMapEntry, new map.constructor); + } - function compose() /* functions... */{ - return seq.apply(null, reverse.call(arguments)); - } + /** Used to match `RegExp` flags from their coerced string values. */ + var reFlags = /\w*$/; + + /** + * Creates a clone of `regexp`. + * + * @private + * @param {Object} regexp The regexp to clone. + * @returns {Object} Returns the cloned regexp. + */ + function cloneRegExp(regexp) { + var result = new regexp.constructor(regexp.source, reFlags.exec(regexp)); + result.lastIndex = regexp.lastIndex; + return result; + } - function concat$1(eachfn, arr, fn, callback) { - var result = []; - eachfn(arr, function (x, index, cb) { - fn(x, function (err, y) { - result = result.concat(y || []); - cb(err); - }); - }, function (err) { - callback(err, result); + /** + * Adds `value` to `set`. + * + * @private + * @param {Object} set The set to modify. + * @param {*} value The value to add. + * @returns {Object} Returns `set`. + */ + function addSetEntry(set, value) { + set.add(value); + return set; + } + + /** + * Converts `set` to an array. + * + * @private + * @param {Object} set The set to convert. + * @returns {Array} Returns the converted array. + */ + function setToArray(set) { + var index = -1, + result = Array(set.size); + + set.forEach(function(value) { + result[++index] = value; }); - } + return result; + } - function doParallel(fn) { - return function (obj, iterator, callback) { - return fn(eachOf, obj, iterator, callback); - }; - } + /** + * Creates a clone of `set`. + * + * @private + * @param {Object} set The set to clone. + * @returns {Object} Returns the cloned set. + */ + function cloneSet(set) { + return arrayReduce(setToArray(set), addSetEntry, new set.constructor); + } - var concat = doParallel(concat$1); + /** Built-in value references. */ + var Symbol = root.Symbol; + + var symbolProto = Symbol ? Symbol.prototype : undefined; + var symbolValueOf = symbolProto ? symbolProto.valueOf : undefined; + /** + * Creates a clone of the `symbol` object. + * + * @private + * @param {Object} symbol The symbol object to clone. + * @returns {Object} Returns the cloned symbol object. + */ + function cloneSymbol(symbol) { + return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {}; + } - function doSeries(fn) { - return function (obj, iterator, callback) { - return fn(eachOfSeries, obj, iterator, callback); - }; - } + /** + * Creates a clone of `typedArray`. + * + * @private + * @param {Object} typedArray The typed array to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Object} Returns the cloned typed array. + */ + function cloneTypedArray(typedArray, isDeep) { + var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer; + return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length); + } - var concatSeries = doSeries(concat$1); + var boolTag$1 = '[object Boolean]'; + var dateTag$1 = '[object Date]'; + var mapTag$2 = '[object Map]'; + var numberTag$1 = '[object Number]'; + var regexpTag$1 = '[object RegExp]'; + var setTag$2 = '[object Set]'; + var stringTag$2 = '[object String]'; + var symbolTag$1 = '[object Symbol]'; + var arrayBufferTag$1 = '[object ArrayBuffer]'; + var float32Tag$1 = '[object Float32Array]'; + var float64Tag$1 = '[object Float64Array]'; + var int8Tag$1 = '[object Int8Array]'; + var int16Tag$1 = '[object Int16Array]'; + var int32Tag$1 = '[object Int32Array]'; + var uint8Tag$1 = '[object Uint8Array]'; + var uint8ClampedTag$1 = '[object Uint8ClampedArray]'; + var uint16Tag$1 = '[object Uint16Array]'; + var uint32Tag$1 = '[object Uint32Array]'; + /** + * Initializes an object clone based on its `toStringTag`. + * + * **Note:** This function only supports cloning values with tags of + * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`. + * + * @private + * @param {Object} object The object to clone. + * @param {string} tag The `toStringTag` of the object to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Object} Returns the initialized clone. + */ + function initCloneByTag(object, tag, isDeep) { + var Ctor = object.constructor; + switch (tag) { + case arrayBufferTag$1: + return cloneArrayBuffer(object); + + case boolTag$1: + case dateTag$1: + return new Ctor(+object); + + case float32Tag$1: case float64Tag$1: + case int8Tag$1: case int16Tag$1: case int32Tag$1: + case uint8Tag$1: case uint8ClampedTag$1: case uint16Tag$1: case uint32Tag$1: + return cloneTypedArray(object, isDeep); + + case mapTag$2: + return cloneMap(object); + + case numberTag$1: + case stringTag$2: + return new Ctor(object); + + case regexpTag$1: + return cloneRegExp(object); + + case setTag$2: + return cloneSet(object); + + case symbolTag$1: + return cloneSymbol(object); + } + } - var constant = rest(function (values) { - var args = [null].concat(values); - return function (cb) { - return cb.apply(this, args); + /** Built-in value references. */ + var objectCreate = Object.create; + + /** + * The base implementation of `_.create` without support for assigning + * properties to the created object. + * + * @private + * @param {Object} prototype The object to inherit from. + * @returns {Object} Returns the new object. + */ + function baseCreate(proto) { + return isObject(proto) ? objectCreate(proto) : {}; + } + + /** Built-in value references. */ + var getPrototypeOf$1 = Object.getPrototypeOf; + + /** + * Initializes an object clone. + * + * @private + * @param {Object} object The object to clone. + * @returns {Object} Returns the initialized clone. + */ + function initCloneObject(object) { + return (typeof object.constructor == 'function' && !isPrototype(object)) + ? baseCreate(getPrototypeOf$1(object)) + : {}; + } + + /** + * Creates a function that returns `value`. + * + * @static + * @memberOf _ + * @category Util + * @param {*} value The value to return from the new function. + * @returns {Function} Returns the new function. + * @example + * + * var object = { 'user': 'fred' }; + * var getter = _.constant(object); + * + * getter() === object; + * // => true + */ + function constant(value) { + return function() { + return value; }; - }); - - function _createTester(eachfn, check, getResult) { - return function (arr, limit, iterator, cb) { - function done(err) { - if (cb) { - if (err) { - cb(err); - } else { - cb(null, getResult(false, void 0)); - } - } + } + + /** Used to determine if values are of the language type `Object`. */ + var objectTypes$1 = { + 'function': true, + 'object': true + }; + + /** Detect free variable `exports`. */ + var freeExports$1 = (objectTypes$1[typeof exports] && exports && !exports.nodeType) + ? exports + : undefined; + + /** Detect free variable `module`. */ + var freeModule$1 = (objectTypes$1[typeof module] && module && !module.nodeType) + ? module + : undefined; + + /** Detect the popular CommonJS extension `module.exports`. */ + var moduleExports = (freeModule$1 && freeModule$1.exports === freeExports$1) + ? freeExports$1 + : undefined; + + /** Built-in value references. */ + var Buffer = moduleExports ? root.Buffer : undefined; + + /** + * Checks if `value` is a buffer. + * + * @static + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a buffer, else `false`. + * @example + * + * _.isBuffer(new Buffer(2)); + * // => true + * + * _.isBuffer(new Uint8Array(2)); + * // => false + */ + var isBuffer = !Buffer ? constant(false) : function(value) { + return value instanceof Buffer; + }; + + var argsTag$1 = '[object Arguments]'; + var arrayTag = '[object Array]'; + var boolTag = '[object Boolean]'; + var dateTag = '[object Date]'; + var errorTag = '[object Error]'; + var funcTag$1 = '[object Function]'; + var genTag$1 = '[object GeneratorFunction]'; + var mapTag = '[object Map]'; + var numberTag = '[object Number]'; + var objectTag = '[object Object]'; + var regexpTag = '[object RegExp]'; + var setTag = '[object Set]'; + var stringTag$1 = '[object String]'; + var symbolTag = '[object Symbol]'; + var weakMapTag = '[object WeakMap]'; + var arrayBufferTag = '[object ArrayBuffer]'; + var float32Tag = '[object Float32Array]'; + var float64Tag = '[object Float64Array]'; + var int8Tag = '[object Int8Array]'; + var int16Tag = '[object Int16Array]'; + var int32Tag = '[object Int32Array]'; + var uint8Tag = '[object Uint8Array]'; + var uint8ClampedTag = '[object Uint8ClampedArray]'; + var uint16Tag = '[object Uint16Array]'; + var uint32Tag = '[object Uint32Array]'; + /** Used to identify `toStringTag` values supported by `_.clone`. */ + var cloneableTags = {}; + cloneableTags[argsTag$1] = cloneableTags[arrayTag] = + cloneableTags[arrayBufferTag] = cloneableTags[boolTag] = + cloneableTags[dateTag] = cloneableTags[float32Tag] = + cloneableTags[float64Tag] = cloneableTags[int8Tag] = + cloneableTags[int16Tag] = cloneableTags[int32Tag] = + cloneableTags[mapTag] = cloneableTags[numberTag] = + cloneableTags[objectTag] = cloneableTags[regexpTag] = + cloneableTags[setTag] = cloneableTags[stringTag$1] = + cloneableTags[symbolTag] = cloneableTags[uint8Tag] = + cloneableTags[uint8ClampedTag] = cloneableTags[uint16Tag] = + cloneableTags[uint32Tag] = true; + cloneableTags[errorTag] = cloneableTags[funcTag$1] = + cloneableTags[weakMapTag] = false; + + /** + * The base implementation of `_.clone` and `_.cloneDeep` which tracks + * traversed objects. + * + * @private + * @param {*} value The value to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @param {boolean} [isFull] Specify a clone including symbols. + * @param {Function} [customizer] The function to customize cloning. + * @param {string} [key] The key of `value`. + * @param {Object} [object] The parent object of `value`. + * @param {Object} [stack] Tracks traversed objects and their clone counterparts. + * @returns {*} Returns the cloned value. + */ + function baseClone(value, isDeep, isFull, customizer, key, object, stack) { + var result; + if (customizer) { + result = object ? customizer(value, key, object, stack) : customizer(value); + } + if (result !== undefined) { + return result; + } + if (!isObject(value)) { + return value; + } + var isArr = isArray(value); + if (isArr) { + result = initCloneArray(value); + if (!isDeep) { + return copyArray(value, result); + } + } else { + var tag = getTag$1(value), + isFunc = tag == funcTag$1 || tag == genTag$1; + + if (isBuffer(value)) { + return cloneBuffer(value, isDeep); + } + if (tag == objectTag || tag == argsTag$1 || (isFunc && !object)) { + if (isHostObject(value)) { + return object ? value : {}; } - function iteratee(x, _, callback) { - if (!cb) return callback(); - iterator(x, function (err, v) { - if (cb) { - if (err) { - cb(err); - cb = iterator = false; - } else if (check(v)) { - cb(null, getResult(true, x)); - cb = iterator = false; - } - } - callback(); - }); + result = initCloneObject(isFunc ? {} : value); + if (!isDeep) { + result = baseAssign(result, value); + return isFull ? copySymbols(value, result) : result; } - if (arguments.length > 3) { - eachfn(arr, limit, iteratee, done); - } else { - cb = iterator; - iterator = limit; - eachfn(arr, iteratee, done); + } else { + if (!cloneableTags[tag]) { + return object ? value : {}; } - }; - } + result = initCloneByTag(value, tag, isDeep); + } + } + // Check for circular references and return its corresponding clone. + stack || (stack = new Stack); + var stacked = stack.get(value); + if (stacked) { + return stacked; + } + stack.set(value, result); - function _findGetResult(v, x) { - return x; - } + // Recursively populate clone (susceptible to call stack limits). + (isArr ? arrayEach : baseForOwn)(value, function(subValue, key) { + assignValue(result, key, baseClone(subValue, isDeep, isFull, customizer, key, value, stack)); + }); + return (isFull && !isArr) ? copySymbols(value, result) : result; + } - var detect = _createTester(eachOf, identity, _findGetResult); + var argsRegex = /^function\s*[^\(]*\(\s*([^\)]*)\)/m; - function _eachOfLimit(limit) { - return function (obj, iterator, callback) { - callback = once(callback || noop); - obj = obj || []; - var nextKey = keyIterator(obj); - if (limit <= 0) { - return callback(null); - } - var done = false; - var running = 0; - var errored = false; - - (function replenish() { - if (done && running <= 0) { - return callback(null); - } - - while (running < limit && !errored) { - var key = nextKey(); - if (key === null) { - done = true; - if (running <= 0) { - callback(null); - } - return; - } - running += 1; - iterator(obj[key], key, onlyOnce(function (err) { - running -= 1; - if (err) { - callback(err); - errored = true; - } else { - replenish(); - } - })); - } - })(); - }; - } - - function eachOfLimit(obj, limit, iterator, cb) { - _eachOfLimit(limit)(obj, iterator, cb); - } - - var detectLimit = _createTester(eachOfLimit, identity, _findGetResult); - - var detectSeries = _createTester(eachOfSeries, identity, _findGetResult); - - function consoleFunc(name) { - return rest(function (fn, args) { - fn.apply(null, args.concat([rest(function (err, args) { - if (typeof console === 'object') { - if (err) { - if (console.error) { - console.error(err); - } - } else if (console[name]) { - arrayEach(args, function (x) { - console[name](x); - }); - } - } - })])); - }); - } + function parseParams(func) { + return func.toString().match(argsRegex)[1].split(/\s*\,\s*/); + } - var dir = consoleFunc('dir'); + function autoInject(tasks, callback) { + var newTasks = {}; + + forOwn(tasks, function (taskFn, key) { + var params; + + if (isArray(taskFn)) { + params = baseClone(taskFn); + taskFn = params.pop(); + + newTasks[key] = params.concat(newTask); + } else if (taskFn.length === 0) { + throw new Error("autoInject task functions require explicit parameters."); + } else if (taskFn.length === 1) { + // no dependencies, use the function as-is + newTasks[key] = taskFn; + } else { + params = parseParams(taskFn); + params.pop(); + + newTasks[key] = params.concat(newTask); + } + + function newTask(results, taskCb) { + var newArgs = arrayMap(params, function (name) { + return results[name]; + }); + newArgs.push(taskCb); + taskFn.apply(null, newArgs); + } + }); + + auto(newTasks, callback); + } - function during(test, iterator, cb) { - cb = cb || noop; + var _setImmediate = typeof setImmediate === 'function' && setImmediate; + + var _defer; + if (_setImmediate) { + _defer = _setImmediate; + } else if (typeof process === 'object' && typeof process.nextTick === 'function') { + _defer = process.nextTick; + } else { + _defer = function (fn) { + setTimeout(fn, 0); + }; + } - var next = rest(function (err, args) { - if (err) { - cb(err); - } else { - args.push(check); - test.apply(this, args); - } - }); + var setImmediate$1 = rest(function (fn, args) { + _defer(function () { + fn.apply(null, args); + }); + }); - var check = function (err, truth) { - if (err) return cb(err); - if (!truth) return cb(null); - iterator(next); - }; + function queue(worker, concurrency, payload) { + if (concurrency == null) { + concurrency = 1; + } else if (concurrency === 0) { + throw new Error('Concurrency must not be zero'); + } + function _insert(q, data, pos, callback) { + if (callback != null && typeof callback !== 'function') { + throw new Error('task callback must be a function'); + } + q.started = true; + if (!isArray(data)) { + data = [data]; + } + if (data.length === 0 && q.idle()) { + // call drain immediately if there are no tasks + return setImmediate$1(function () { + q.drain(); + }); + } + arrayEach(data, function (task) { + var item = { + data: task, + callback: callback || noop + }; + + if (pos) { + q.tasks.unshift(item); + } else { + q.tasks.push(item); + } + + if (q.tasks.length === q.concurrency) { + q.saturated(); + } + if (q.tasks.length <= q.concurrency - q.buffer) { + q.unsaturated(); + } + }); + setImmediate$1(q.process); + } + function _next(q, tasks) { + return function () { + workers -= 1; + + var removed = false; + var args = arguments; + arrayEach(tasks, function (task) { + arrayEach(workersList, function (worker, index) { + if (worker === task && !removed) { + workersList.splice(index, 1); + removed = true; + } + }); + + task.callback.apply(task, args); + }); + if (q.tasks.length + workers === 0) { + q.drain(); + } + q.process(); + }; + } - test(check); - } - - function doDuring(iterator, test, cb) { - var calls = 0; - - during(function (next) { - if (calls++ < 1) return next(null, true); - test.apply(this, arguments); - }, iterator, cb); - } - - function whilst(test, iterator, cb) { - cb = cb || noop; - if (!test()) return cb(null); - var next = rest(function (err, args) { - if (err) return cb(err); - if (test.apply(this, args)) return iterator(next); - cb.apply(null, [null].concat(args)); - }); - iterator(next); - } - - function doWhilst(iterator, test, cb) { - var calls = 0; - return whilst(function () { - return ++calls <= 1 || test.apply(this, arguments); - }, iterator, cb); - } - - function doUntil(iterator, test, cb) { - return doWhilst(iterator, function () { - return !test.apply(this, arguments); - }, cb); - } - - function _withoutIndex(iterator) { - return function (value, index, callback) { - return iterator(value, callback); - }; - } - - function each(arr, iterator, cb) { - return eachOf(arr, _withoutIndex(iterator), cb); - } - - function eachLimit(arr, limit, iterator, cb) { - return _eachOfLimit(limit)(arr, _withoutIndex(iterator), cb); - } - - function eachSeries(arr, iterator, cb) { - return eachOfSeries(arr, _withoutIndex(iterator), cb); - } - - function ensureAsync(fn) { - return rest(function (args) { - var callback = args.pop(); - var sync = true; - args.push(function () { - var innerArgs = arguments; - if (sync) { - setImmediate$1(function () { - callback.apply(null, innerArgs); - }); - } else { - callback.apply(null, innerArgs); - } - }); - fn.apply(this, args); - sync = false; - }); - } - - function notId(v) { - return !v; - } - - var every = _createTester(eachOf, notId, notId); - - var everyLimit = _createTester(eachOfLimit, notId, notId); - - function _filter(eachfn, arr, iterator, callback) { - var results = []; - eachfn(arr, function (x, index, callback) { - iterator(x, function (err, v) { - if (err) { - callback(err); - } else { - if (v) { - results.push({ index: index, value: x }); - } - callback(); - } - }); - }, function (err) { - if (err) { - callback(err); - } else { - callback(null, arrayMap(results.sort(function (a, b) { - return a.index - b.index; - }), baseProperty('value'))); - } - }); - } + var workers = 0; + var workersList = []; + var q = { + tasks: [], + concurrency: concurrency, + payload: payload, + saturated: noop, + unsaturated: noop, + buffer: concurrency / 4, + empty: noop, + drain: noop, + started: false, + paused: false, + push: function (data, callback) { + _insert(q, data, false, callback); + }, + kill: function () { + q.drain = noop; + q.tasks = []; + }, + unshift: function (data, callback) { + _insert(q, data, true, callback); + }, + process: function () { + while (!q.paused && workers < q.concurrency && q.tasks.length) { + + var tasks = q.payload ? q.tasks.splice(0, q.payload) : q.tasks.splice(0, q.tasks.length); + + var data = arrayMap(tasks, baseProperty('data')); + + if (q.tasks.length === 0) { + q.empty(); + } + workers += 1; + workersList.push(tasks[0]); + var cb = onlyOnce(_next(q, tasks)); + worker(data, cb); + } + }, + length: function () { + return q.tasks.length; + }, + running: function () { + return workers; + }, + workersList: function () { + return workersList; + }, + idle: function () { + return q.tasks.length + workers === 0; + }, + pause: function () { + q.paused = true; + }, + resume: function () { + if (q.paused === false) { + return; + } + q.paused = false; + var resumeCount = Math.min(q.concurrency, q.tasks.length); + // Need to call q.process once per concurrent + // worker to preserve full concurrency after pause + for (var w = 1; w <= resumeCount; w++) { + setImmediate$1(q.process); + } + } + }; + return q; + } - var filter = doParallel(_filter); + function cargo(worker, payload) { + return queue(worker, 1, payload); + } - function doParallelLimit(fn) { - return function (obj, limit, iterator, callback) { - return fn(_eachOfLimit(limit), obj, iterator, callback); - }; - } + function reduce(arr, memo, iterator, cb) { + eachOfSeries(arr, function (x, i, cb) { + iterator(memo, x, function (err, v) { + memo = v; + cb(err); + }); + }, function (err) { + cb(err, memo); + }); + } + + function seq() /* functions... */{ + var fns = arguments; + return rest(function (args) { + var that = this; + + var cb = args[args.length - 1]; + if (typeof cb == 'function') { + args.pop(); + } else { + cb = noop; + } + + reduce(fns, args, function (newargs, fn, cb) { + fn.apply(that, newargs.concat([rest(function (err, nextargs) { + cb(err, nextargs); + })])); + }, function (err, results) { + cb.apply(that, [err].concat(results)); + }); + }); + } + + var reverse = Array.prototype.reverse; + + function compose() /* functions... */{ + return seq.apply(null, reverse.call(arguments)); + } + + function concat$1(eachfn, arr, fn, callback) { + var result = []; + eachfn(arr, function (x, index, cb) { + fn(x, function (err, y) { + result = result.concat(y || []); + cb(err); + }); + }, function (err) { + callback(err, result); + }); + } + + function doParallel(fn) { + return function (obj, iterator, callback) { + return fn(eachOf, obj, iterator, callback); + }; + } + + var concat = doParallel(concat$1); + + function doSeries(fn) { + return function (obj, iterator, callback) { + return fn(eachOfSeries, obj, iterator, callback); + }; + } + + var concatSeries = doSeries(concat$1); + + var constant$1 = rest(function (values) { + var args = [null].concat(values); + return function () { + var callback = [].slice.call(arguments).pop(); + return callback.apply(this, args); + }; + }); + + function _createTester(eachfn, check, getResult) { + return function (arr, limit, iterator, cb) { + function done(err) { + if (cb) { + if (err) { + cb(err); + } else { + cb(null, getResult(false)); + } + } + } + function iteratee(x, _, callback) { + if (!cb) return callback(); + iterator(x, function (err, v) { + if (cb) { + if (err) { + cb(err); + cb = iterator = false; + } else if (check(v)) { + cb(null, getResult(true, x)); + cb = iterator = false; + } + } + callback(); + }); + } + if (arguments.length > 3) { + eachfn(arr, limit, iteratee, done); + } else { + cb = iterator; + iterator = limit; + eachfn(arr, iteratee, done); + } + }; + } + + function _findGetResult(v, x) { + return x; + } + + var detect = _createTester(eachOf, identity, _findGetResult); + + var detectLimit = _createTester(eachOfLimit, identity, _findGetResult); + + var detectSeries = _createTester(eachOfSeries, identity, _findGetResult); + + function consoleFunc(name) { + return rest(function (fn, args) { + fn.apply(null, args.concat([rest(function (err, args) { + if (typeof console === 'object') { + if (err) { + if (console.error) { + console.error(err); + } + } else if (console[name]) { + arrayEach(args, function (x) { + console[name](x); + }); + } + } + })])); + }); + } - var filterLimit = doParallelLimit(_filter); + var dir = consoleFunc('dir'); - var filterSeries = doSeries(_filter); + function during(test, iterator, cb) { + cb = cb || noop; - function forever(fn, cb) { - var done = onlyOnce(cb || noop); - var task = ensureAsync(fn); + var next = rest(function (err, args) { + if (err) { + cb(err); + } else { + args.push(check); + test.apply(this, args); + } + }); - function next(err) { - if (err) return done(err); - task(next); + var check = function (err, truth) { + if (err) return cb(err); + if (!truth) return cb(null); + iterator(next); + }; + + test(check); + } + + function doDuring(iterator, test, cb) { + var calls = 0; + + during(function (next) { + if (calls++ < 1) return next(null, true); + test.apply(this, arguments); + }, iterator, cb); + } + + function whilst(test, iterator, cb) { + cb = cb || noop; + if (!test()) return cb(null); + var next = rest(function (err, args) { + if (err) return cb(err); + if (test.apply(this, args)) return iterator(next); + cb.apply(null, [null].concat(args)); + }); + iterator(next); + } + + function doWhilst(iterator, test, cb) { + var calls = 0; + return whilst(function () { + return ++calls <= 1 || test.apply(this, arguments); + }, iterator, cb); + } + + function doUntil(iterator, test, cb) { + return doWhilst(iterator, function () { + return !test.apply(this, arguments); + }, cb); + } + + function _withoutIndex(iterator) { + return function (value, index, callback) { + return iterator(value, callback); + }; + } + + function eachLimit(arr, limit, iterator, cb) { + return _eachOfLimit(limit)(arr, _withoutIndex(iterator), cb); + } + + var each = doLimit(eachLimit, Infinity); + + var eachSeries = doLimit(eachLimit, 1); + + function ensureAsync(fn) { + return rest(function (args) { + var callback = args.pop(); + var sync = true; + args.push(function () { + var innerArgs = arguments; + if (sync) { + setImmediate$1(function () { + callback.apply(null, innerArgs); + }); + } else { + callback.apply(null, innerArgs); + } + }); + fn.apply(this, args); + sync = false; + }); + } + + function notId(v) { + return !v; + } + + var everyLimit = _createTester(eachOfLimit, notId, notId); + + var every = doLimit(everyLimit, Infinity); + + var everySeries = doLimit(everyLimit, 1); + + function _filter(eachfn, arr, iterator, callback) { + var results = []; + eachfn(arr, function (x, index, callback) { + iterator(x, function (err, v) { + if (err) { + callback(err); + } else { + if (v) { + results.push({ index: index, value: x }); + } + callback(); + } + }); + }, function (err) { + if (err) { + callback(err); + } else { + callback(null, arrayMap(results.sort(function (a, b) { + return a.index - b.index; + }), baseProperty('value'))); + } + }); + } + + function doParallelLimit(fn) { + return function (obj, limit, iterator, callback) { + return fn(_eachOfLimit(limit), obj, iterator, callback); + }; + } + + var filterLimit = doParallelLimit(_filter); + + var filter = doLimit(filterLimit, Infinity); + + var filterSeries = doLimit(filterLimit, 1); + + function forever(fn, cb) { + var done = onlyOnce(cb || noop); + var task = ensureAsync(fn); + + function next(err) { + if (err) return done(err); + task(next); + } + next(); + } + + function iterator (tasks) { + function makeCallback(index) { + function fn() { + if (tasks.length) { + tasks[index].apply(null, arguments); + } + return fn.next(); + } + fn.next = function () { + return index < tasks.length - 1 ? makeCallback(index + 1) : null; + }; + return fn; + } + return makeCallback(0); + } + + var log = consoleFunc('log'); + + function _asyncMap(eachfn, arr, iterator, callback) { + callback = once(callback || noop); + arr = arr || []; + var results = isArrayLike(arr) ? [] : {}; + eachfn(arr, function (value, index, callback) { + iterator(value, function (err, v) { + results[index] = v; + callback(err); + }); + }, function (err) { + callback(err, results); + }); + } + + var mapLimit = doParallelLimit(_asyncMap); + + var map = doLimit(mapLimit, Infinity); + + var mapSeries = doLimit(mapLimit, 1); + + /** `Object#toString` result references. */ + var symbolTag$2 = '[object Symbol]'; + + /** Used for built-in method references. */ + var objectProto$12 = Object.prototype; + + /** + * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring) + * of values. + */ + var objectToString$4 = objectProto$12.toString; + + /** + * Checks if `value` is classified as a `Symbol` primitive or object. + * + * @static + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. + * @example + * + * _.isSymbol(Symbol.iterator); + * // => true + * + * _.isSymbol('abc'); + * // => false + */ + function isSymbol(value) { + return typeof value == 'symbol' || + (isObjectLike(value) && objectToString$4.call(value) == symbolTag$2); + } + + /** Used as references for various `Number` constants. */ + var INFINITY$1 = 1 / 0; + + /** Used to convert symbols to primitives and strings. */ + var symbolProto$1 = Symbol ? Symbol.prototype : undefined; + var symbolToString = symbolProto$1 ? symbolProto$1.toString : undefined; + /** + * Converts `value` to a string if it's not one. An empty string is returned + * for `null` and `undefined` values. The sign of `-0` is preserved. + * + * @static + * @memberOf _ + * @category Lang + * @param {*} value The value to process. + * @returns {string} Returns the string. + * @example + * + * _.toString(null); + * // => '' + * + * _.toString(-0); + * // => '-0' + * + * _.toString([1, 2, 3]); + * // => '1,2,3' + */ + function toString(value) { + // Exit early for strings to avoid a performance hit in some environments. + if (typeof value == 'string') { + return value; } - next(); - } - - function iterator (tasks) { - function makeCallback(index) { - function fn() { - if (tasks.length) { - tasks[index].apply(null, arguments); - } - return fn.next(); - } - fn.next = function () { - return index < tasks.length - 1 ? makeCallback(index + 1) : null; - }; - return fn; + if (value == null) { + return ''; + } + if (isSymbol(value)) { + return symbolToString ? symbolToString.call(value) : ''; } - return makeCallback(0); - } - - var log = consoleFunc('log'); - - function _asyncMap(eachfn, arr, iterator, callback) { - callback = once(callback || noop); - arr = arr || []; - var results = isArrayLike(arr) ? [] : {}; - eachfn(arr, function (value, index, callback) { - iterator(value, function (err, v) { - results[index] = v; - callback(err); - }); - }, function (err) { - callback(err, results); + var result = (value + ''); + return (result == '0' && (1 / value) == -INFINITY$1) ? '-0' : result; + } + + /** Used to match property names within property paths. */ + var rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]/g; + + /** Used to match backslashes in property paths. */ + var reEscapeChar = /\\(\\)?/g; + + /** + * Converts `string` to a property path array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the property path array. + */ + function stringToPath(string) { + var result = []; + toString(string).replace(rePropName, function(match, number, quote, string) { + result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match)); }); - } - - var map = doParallel(_asyncMap); - - var mapLimit = doParallelLimit(_asyncMap); - - var mapSeries = doSeries(_asyncMap); - - /** - * Checks if `value` is a global object. - * - * @private - * @param {*} value The value to check. - * @returns {null|Object} Returns `value` if it's a global object, else `null`. - */ - function checkGlobal(value) { - return (value && value.Object === Object) ? value : null; - } - - /** Used to determine if values are of the language type `Object`. */ - var objectTypes = { - 'function': true, - 'object': true - }; - - /** Detect free variable `exports`. */ - var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null; - - /** Detect free variable `module`. */ - var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null; - - /** Detect free variable `global` from Node.js. */ - var freeGlobal = checkGlobal(freeExports && freeModule && typeof global == 'object' && global); - - /** Detect free variable `self`. */ - var freeSelf = checkGlobal(objectTypes[typeof self] && self); - - /** Detect free variable `window`. */ - var freeWindow = checkGlobal(objectTypes[typeof window] && window); - - /** Detect `this` as the global object. */ - var thisGlobal = checkGlobal(objectTypes[typeof this] && this); - - /** - * Used as a reference to the global object. - * - * The `this` value is used if it's the global object to avoid Greasemonkey's - * restricted `window` object, otherwise the `window` object is used. - */ - var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')(); - - /** Built-in value references. */ - var Symbol = root.Symbol; - - /** `Object#toString` result references. */ - var symbolTag = '[object Symbol]'; - - /** Used for built-in method references. */ - var objectProto$5 = Object.prototype; - - /** - * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring) - * of values. - */ - var objectToString$3 = objectProto$5.toString; - - /** - * Checks if `value` is classified as a `Symbol` primitive or object. - * - * @static - * @memberOf _ - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. - * @example - * - * _.isSymbol(Symbol.iterator); - * // => true - * - * _.isSymbol('abc'); - * // => false - */ - function isSymbol(value) { - return typeof value == 'symbol' || - (isObjectLike(value) && objectToString$3.call(value) == symbolTag); - } - - /** Used as references for various `Number` constants. */ - var INFINITY$1 = 1 / 0; - - /** Used to convert symbols to primitives and strings. */ - var symbolProto = Symbol ? Symbol.prototype : undefined; - var symbolToString = Symbol ? symbolProto.toString : undefined; - /** - * Converts `value` to a string if it's not one. An empty string is returned - * for `null` and `undefined` values. The sign of `-0` is preserved. - * - * @static - * @memberOf _ - * @category Lang - * @param {*} value The value to process. - * @returns {string} Returns the string. - * @example - * - * _.toString(null); - * // => '' - * - * _.toString(-0); - * // => '-0' - * - * _.toString([1, 2, 3]); - * // => '1,2,3' - */ - function toString(value) { - // Exit early for strings to avoid a performance hit in some environments. - if (typeof value == 'string') { - return value; + return result; } - if (value == null) { - return ''; - } - if (isSymbol(value)) { - return Symbol ? symbolToString.call(value) : ''; - } - var result = (value + ''); - return (result == '0' && (1 / value) == -INFINITY$1) ? '-0' : result; - } - - /** Used to match property names within property paths. */ - var rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]/g; - - /** Used to match backslashes in property paths. */ - var reEscapeChar = /\\(\\)?/g; - - /** - * Converts `string` to a property path array. - * - * @private - * @param {string} string The string to convert. - * @returns {Array} Returns the property path array. - */ - function stringToPath(string) { - var result = []; - toString(string).replace(rePropName, function(match, number, quote, string) { - result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match)); - }); - return result; - } - - /** - * The base implementation of `_.toPath` which only converts `value` to a - * path if it's not one. - * - * @private - * @param {*} value The value to process. - * @returns {Array} Returns the property path array. - */ - function baseToPath(value) { - return isArray(value) ? value : stringToPath(value); - } - - var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/; - var reIsPlainProp = /^\w*$/; - /** - * Checks if `value` is a property name and not a property path. - * - * @private - * @param {*} value The value to check. - * @param {Object} [object] The object to query keys on. - * @returns {boolean} Returns `true` if `value` is a property name, else `false`. - */ - function isKey(value, object) { - if (typeof value == 'number') { - return true; + + /** + * Casts `value` to a path array if it's not one. + * + * @private + * @param {*} value The value to inspect. + * @returns {Array} Returns the cast property path array. + */ + function baseCastPath(value) { + return isArray(value) ? value : stringToPath(value); } - return !isArray(value) && - (reIsPlainProp.test(value) || !reIsDeepProp.test(value) || - (object != null && value in Object(object))); - } - - /** - * Gets the last element of `array`. - * - * @static - * @memberOf _ - * @category Array - * @param {Array} array The array to query. - * @returns {*} Returns the last element of `array`. - * @example - * - * _.last([1, 2, 3]); - * // => 3 - */ - function last(array) { - var length = array ? array.length : 0; - return length ? array[length - 1] : undefined; - } - - /** - * The base implementation of `_.slice` without an iteratee call guard. - * - * @private - * @param {Array} array The array to slice. - * @param {number} [start=0] The start position. - * @param {number} [end=array.length] The end position. - * @returns {Array} Returns the slice of `array`. - */ - function baseSlice(array, start, end) { - var index = -1, - length = array.length; - - if (start < 0) { - start = -start > length ? 0 : (length + start); - } - end = end > length ? length : end; - if (end < 0) { - end += length; - } - length = start > end ? 0 : ((end - start) >>> 0); - start >>>= 0; - - var result = Array(length); - while (++index < length) { - result[index] = array[index + start]; - } - return result; - } - - /** - * The base implementation of `_.get` without support for default values. - * - * @private - * @param {Object} object The object to query. - * @param {Array|string} path The path of the property to get. - * @returns {*} Returns the resolved value. - */ - function baseGet(object, path) { - path = isKey(path, object) ? [path + ''] : baseToPath(path); - - var index = 0, - length = path.length; - - while (object != null && index < length) { - object = object[path[index++]]; - } - return (index && index == length) ? object : undefined; - } - - /** - * Gets the value at `path` of `object`. If the resolved value is - * `undefined` the `defaultValue` is used in its place. - * - * @static - * @memberOf _ - * @category Object - * @param {Object} object The object to query. - * @param {Array|string} path The path of the property to get. - * @param {*} [defaultValue] The value returned if the resolved value is `undefined`. - * @returns {*} Returns the resolved value. - * @example - * - * var object = { 'a': [{ 'b': { 'c': 3 } }] }; - * - * _.get(object, 'a[0].b.c'); - * // => 3 - * - * _.get(object, ['a', '0', 'b', 'c']); - * // => 3 - * - * _.get(object, 'a.b.c', 'default'); - * // => 'default' - */ - function get(object, path, defaultValue) { - var result = object == null ? undefined : baseGet(object, path); - return result === undefined ? defaultValue : result; - } - - /** - * Gets the parent value at `path` of `object`. - * - * @private - * @param {Object} object The object to query. - * @param {Array} path The path to get the parent value of. - * @returns {*} Returns the parent value. - */ - function parent(object, path) { - return path.length == 1 ? object : get(object, baseSlice(path, 0, -1)); - } - - /** - * Checks if `path` exists on `object`. - * - * @private - * @param {Object} object The object to query. - * @param {Array|string} path The path to check. - * @param {Function} hasFunc The function to check properties. - * @returns {boolean} Returns `true` if `path` exists, else `false`. - */ - function hasPath(object, path, hasFunc) { - if (object == null) { - return false; - } - var result = hasFunc(object, path); - if (!result && !isKey(path)) { - path = baseToPath(path); - object = parent(object, path); - if (object != null) { - path = last(path); - result = hasFunc(object, path); + + var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/; + var reIsPlainProp = /^\w*$/; + /** + * Checks if `value` is a property name and not a property path. + * + * @private + * @param {*} value The value to check. + * @param {Object} [object] The object to query keys on. + * @returns {boolean} Returns `true` if `value` is a property name, else `false`. + */ + function isKey(value, object) { + if (typeof value == 'number') { + return true; } + return !isArray(value) && + (reIsPlainProp.test(value) || !reIsDeepProp.test(value) || + (object != null && value in Object(object))); } - var length = object ? object.length : undefined; - return result || ( - !!length && isLength(length) && isIndex(path, length) && - (isArray(object) || isString(object) || isArguments(object)) - ); - } - - /** - * Checks if `path` is a direct property of `object`. - * - * @static - * @memberOf _ - * @category Object - * @param {Object} object The object to query. - * @param {Array|string} path The path to check. - * @returns {boolean} Returns `true` if `path` exists, else `false`. - * @example - * - * var object = { 'a': { 'b': { 'c': 3 } } }; - * var other = _.create({ 'a': _.create({ 'b': _.create({ 'c': 3 }) }) }); - * - * _.has(object, 'a'); - * // => true - * - * _.has(object, 'a.b.c'); - * // => true - * - * _.has(object, ['a', 'b', 'c']); - * // => true - * - * _.has(other, 'a'); - * // => false - */ - function has(object, path) { - return hasPath(object, path, baseHas); - } - - function memoize(fn, hasher) { - var memo = Object.create(null); - var queues = Object.create(null); - hasher = hasher || identity; - var memoized = rest(function memoized(args) { - var callback = args.pop(); - var key = hasher.apply(null, args); - if (has(memo, key)) { - setImmediate$1(function () { - callback.apply(null, memo[key]); - }); - } else if (has(queues, key)) { - queues[key].push(callback); - } else { - queues[key] = [callback]; - fn.apply(null, args.concat([rest(function (args) { - memo[key] = args; - var q = queues[key]; - delete queues[key]; - for (var i = 0, l = q.length; i < l; i++) { - q[i].apply(null, args); - } - })])); - } - }); - memoized.memo = memo; - memoized.unmemoized = fn; - return memoized; - } - - var nexTick = typeof process === 'object' && typeof process.nextTick === 'function' ? process.nextTick : setImmediate$1; - - function _parallel(eachfn, tasks, callback) { - callback = callback || noop; - var results = isArrayLike(tasks) ? [] : {}; - - eachfn(tasks, function (task, key, callback) { - task(rest(function (err, args) { - if (args.length <= 1) { - args = args[0]; - } - results[key] = args; - callback(err); - })); - }, function (err) { - callback(err, results); - }); - } - function parallel(tasks, cb) { - return _parallel(eachOf, tasks, cb); - } + /** + * Gets the last element of `array`. + * + * @static + * @memberOf _ + * @category Array + * @param {Array} array The array to query. + * @returns {*} Returns the last element of `array`. + * @example + * + * _.last([1, 2, 3]); + * // => 3 + */ + function last(array) { + var length = array ? array.length : 0; + return length ? array[length - 1] : undefined; + } - function parallelLimit(tasks, limit, cb) { - return _parallel(_eachOfLimit(limit), tasks, cb); - } + /** + * The base implementation of `_.slice` without an iteratee call guard. + * + * @private + * @param {Array} array The array to slice. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns the slice of `array`. + */ + function baseSlice(array, start, end) { + var index = -1, + length = array.length; - function queue (worker, concurrency) { - return queue$1(function (items, cb) { - worker(items[0], cb); - }, concurrency, 1); - } + if (start < 0) { + start = -start > length ? 0 : (length + start); + } + end = end > length ? length : end; + if (end < 0) { + end += length; + } + length = start > end ? 0 : ((end - start) >>> 0); + start >>>= 0; - function priorityQueue (worker, concurrency) { - function _compareTasks(a, b) { - return a.priority - b.priority; + var result = Array(length); + while (++index < length) { + result[index] = array[index + start]; } + return result; + } - function _binarySearch(sequence, item, compare) { - var beg = -1, - end = sequence.length - 1; - while (beg < end) { - var mid = beg + (end - beg + 1 >>> 1); - if (compare(item, sequence[mid]) >= 0) { - beg = mid; - } else { - end = mid - 1; - } - } - return beg; + /** + * The base implementation of `_.get` without support for default values. + * + * @private + * @param {Object} object The object to query. + * @param {Array|string} path The path of the property to get. + * @returns {*} Returns the resolved value. + */ + function baseGet(object, path) { + path = isKey(path, object) ? [path + ''] : baseCastPath(path); + + var index = 0, + length = path.length; + + while (object != null && index < length) { + object = object[path[index++]]; } + return (index && index == length) ? object : undefined; + } - function _insert(q, data, priority, callback) { - if (callback != null && typeof callback !== 'function') { - throw new Error('task callback must be a function'); - } - q.started = true; - if (!isArray(data)) { - data = [data]; - } - if (data.length === 0) { - // call drain immediately if there are no tasks - return setImmediate$1(function () { - q.drain(); - }); - } - arrayEach(data, function (task) { - var item = { - data: task, - priority: priority, - callback: typeof callback === 'function' ? callback : noop - }; - - q.tasks.splice(_binarySearch(q.tasks, item, _compareTasks) + 1, 0, item); - - if (q.tasks.length === q.concurrency) { - q.saturated(); - } - setImmediate$1(q.process); - }); + /** + * Gets the value at `path` of `object`. If the resolved value is + * `undefined` the `defaultValue` is used in its place. + * + * @static + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path of the property to get. + * @param {*} [defaultValue] The value returned if the resolved value is `undefined`. + * @returns {*} Returns the resolved value. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }] }; + * + * _.get(object, 'a[0].b.c'); + * // => 3 + * + * _.get(object, ['a', '0', 'b', 'c']); + * // => 3 + * + * _.get(object, 'a.b.c', 'default'); + * // => 'default' + */ + function get(object, path, defaultValue) { + var result = object == null ? undefined : baseGet(object, path); + return result === undefined ? defaultValue : result; + } + + /** + * Gets the parent value at `path` of `object`. + * + * @private + * @param {Object} object The object to query. + * @param {Array} path The path to get the parent value of. + * @returns {*} Returns the parent value. + */ + function parent(object, path) { + return path.length == 1 ? object : get(object, baseSlice(path, 0, -1)); + } + + /** + * Checks if `path` exists on `object`. + * + * @private + * @param {Object} object The object to query. + * @param {Array|string} path The path to check. + * @param {Function} hasFunc The function to check properties. + * @returns {boolean} Returns `true` if `path` exists, else `false`. + */ + function hasPath(object, path, hasFunc) { + if (object == null) { + return false; + } + var result = hasFunc(object, path); + if (!result && !isKey(path)) { + path = baseCastPath(path); + object = parent(object, path); + if (object != null) { + path = last(path); + result = hasFunc(object, path); + } } + var length = object ? object.length : undefined; + return result || ( + !!length && isLength(length) && isIndex(path, length) && + (isArray(object) || isString(object) || isArguments(object)) + ); + } - // Start with a normal queue - var q = queue(worker, concurrency); + /** + * Checks if `path` is a direct property of `object`. + * + * @static + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path to check. + * @returns {boolean} Returns `true` if `path` exists, else `false`. + * @example + * + * var object = { 'a': { 'b': { 'c': 3 } } }; + * var other = _.create({ 'a': _.create({ 'b': _.create({ 'c': 3 }) }) }); + * + * _.has(object, 'a'); + * // => true + * + * _.has(object, 'a.b.c'); + * // => true + * + * _.has(object, ['a', 'b', 'c']); + * // => true + * + * _.has(other, 'a'); + * // => false + */ + function has(object, path) { + return hasPath(object, path, baseHas); + } - // Override push to accept second parameter representing priority - q.push = function (data, priority, callback) { - _insert(q, data, priority, callback); - }; + function memoize(fn, hasher) { + var memo = Object.create(null); + var queues = Object.create(null); + hasher = hasher || identity; + var memoized = rest(function memoized(args) { + var callback = args.pop(); + var key = hasher.apply(null, args); + if (has(memo, key)) { + setImmediate$1(function () { + callback.apply(null, memo[key]); + }); + } else if (has(queues, key)) { + queues[key].push(callback); + } else { + queues[key] = [callback]; + fn.apply(null, args.concat([rest(function (args) { + memo[key] = args; + var q = queues[key]; + delete queues[key]; + for (var i = 0, l = q.length; i < l; i++) { + q[i].apply(null, args); + } + })])); + } + }); + memoized.memo = memo; + memoized.unmemoized = fn; + return memoized; + } - // Remove unshift function - delete q.unshift; + function _parallel(eachfn, tasks, callback) { + callback = callback || noop; + var results = isArrayLike(tasks) ? [] : {}; + + eachfn(tasks, function (task, key, callback) { + task(rest(function (err, args) { + if (args.length <= 1) { + args = args[0]; + } + results[key] = args; + callback(err); + })); + }, function (err) { + callback(err, results); + }); + } - return q; - } + function parallelLimit(tasks, limit, cb) { + return _parallel(_eachOfLimit(limit), tasks, cb); + } - var slice = Array.prototype.slice; + var parallel = doLimit(parallelLimit, Infinity); - function reduceRight(arr, memo, iterator, cb) { - var reversed = slice.call(arr).reverse(); - reduce(reversed, memo, iterator, cb); - } + function queue$1 (worker, concurrency) { + return queue(function (items, cb) { + worker(items[0], cb); + }, concurrency, 1); + } - function reject$1(eachfn, arr, iterator, callback) { - _filter(eachfn, arr, function (value, cb) { - iterator(value, function (err, v) { - if (err) { - cb(err); - } else { - cb(null, !v); - } - }); - }, callback); - } + function priorityQueue (worker, concurrency) { + function _compareTasks(a, b) { + return a.priority - b.priority; + } - var reject = doParallel(reject$1); + function _binarySearch(sequence, item, compare) { + var beg = -1, + end = sequence.length - 1; + while (beg < end) { + var mid = beg + (end - beg + 1 >>> 1); + if (compare(item, sequence[mid]) >= 0) { + beg = mid; + } else { + end = mid - 1; + } + } + return beg; + } - var rejectLimit = doParallelLimit(reject$1); + function _insert(q, data, priority, callback) { + if (callback != null && typeof callback !== 'function') { + throw new Error('task callback must be a function'); + } + q.started = true; + if (!isArray(data)) { + data = [data]; + } + if (data.length === 0) { + // call drain immediately if there are no tasks + return setImmediate$1(function () { + q.drain(); + }); + } + arrayEach(data, function (task) { + var item = { + data: task, + priority: priority, + callback: typeof callback === 'function' ? callback : noop + }; + + q.tasks.splice(_binarySearch(q.tasks, item, _compareTasks) + 1, 0, item); + + if (q.tasks.length === q.concurrency) { + q.saturated(); + } + if (q.tasks.length <= q.concurrency - q.buffer) { + q.unsaturated(); + } + setImmediate$1(q.process); + }); + } - var rejectSeries = doSeries(reject$1); + // Start with a normal queue + var q = queue$1(worker, concurrency); - function series(tasks, cb) { - return _parallel(eachOfSeries, tasks, cb); - } + // Override push to accept second parameter representing priority + q.push = function (data, priority, callback) { + _insert(q, data, priority, callback); + }; - function retry(times, task, callback) { - var DEFAULT_TIMES = 5; - var DEFAULT_INTERVAL = 0; + // Remove unshift function + delete q.unshift; - var attempts = []; + return q; + } - var opts = { - times: DEFAULT_TIMES, - interval: DEFAULT_INTERVAL - }; + /** + * Creates a `baseEach` or `baseEachRight` function. + * + * @private + * @param {Function} eachFunc The function to iterate over a collection. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new base function. + */ + function createBaseEach(eachFunc, fromRight) { + return function(collection, iteratee) { + if (collection == null) { + return collection; + } + if (!isArrayLike(collection)) { + return eachFunc(collection, iteratee); + } + var length = collection.length, + index = fromRight ? length : -1, + iterable = Object(collection); - function parseTimes(acc, t) { - if (typeof t === 'number') { - acc.times = parseInt(t, 10) || DEFAULT_TIMES; - } else if (typeof t === 'object') { - acc.times = parseInt(t.times, 10) || DEFAULT_TIMES; - acc.interval = parseInt(t.interval, 10) || DEFAULT_INTERVAL; - } else { - throw new Error('Unsupported argument type for \'times\': ' + typeof t); + while ((fromRight ? index-- : ++index < length)) { + if (iteratee(iterable[index], index, iterable) === false) { + break; } - } + } + return collection; + }; + } - var length = arguments.length; - if (length < 1 || length > 3) { - throw new Error('Invalid arguments - must be either (task), (task, callback), (times, task) or (times, task, callback)'); - } else if (length <= 2 && typeof times === 'function') { - callback = task; - task = times; - } - if (typeof times !== 'function') { - parseTimes(opts, times); - } - opts.callback = callback; - opts.task = task; - - function wrappedTask(wrappedCallback, wrappedResults) { - function retryAttempt(task, finalAttempt) { - return function (seriesCallback) { - task(function (err, result) { - seriesCallback(!err || finalAttempt, { - err: err, - result: result - }); - }, wrappedResults); - }; - } + /** + * The base implementation of `_.forEach` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + */ + var baseEach = createBaseEach(baseForOwn); + + /** + * Iterates over elements of `collection` invoking `iteratee` for each element. + * The iteratee is invoked with three arguments: (value, index|key, collection). + * Iteratee functions may exit iteration early by explicitly returning `false`. + * + * **Note:** As with other "Collections" methods, objects with a "length" property + * are iterated like arrays. To avoid this behavior use `_.forIn` or `_.forOwn` + * for object iteration. + * + * @static + * @memberOf _ + * @alias each + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + * @example + * + * _([1, 2]).forEach(function(value) { + * console.log(value); + * }); + * // => logs `1` then `2` + * + * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) { + * console.log(key); + * }); + * // => logs 'a' then 'b' (iteration order is not guaranteed) + */ + function forEach(collection, iteratee) { + return (typeof iteratee == 'function' && isArray(collection)) + ? arrayEach(collection, iteratee) + : baseEach(collection, baseCastFunction(iteratee)); + } - function retryInterval(interval) { - return function (seriesCallback) { - setTimeout(function () { - seriesCallback(null); - }, interval); - }; - } + function race(tasks, cb) { + cb = once(cb || noop); + if (!isArray(tasks)) return cb(new TypeError('First argument to race must be an array of functions')); + if (!tasks.length) return cb(); + forEach(tasks, function (task) { + task(cb); + }); + } - while (opts.times) { + var slice = Array.prototype.slice; - var finalAttempt = !(opts.times -= 1); - attempts.push(retryAttempt(opts.task, finalAttempt)); - if (!finalAttempt && opts.interval > 0) { - attempts.push(retryInterval(opts.interval)); - } - } + function reduceRight(arr, memo, iterator, cb) { + var reversed = slice.call(arr).reverse(); + reduce(reversed, memo, iterator, cb); + } - series(attempts, function (done, data) { - data = data[data.length - 1]; - (wrappedCallback || opts.callback)(data.err, data.result); - }); - } + function reject$1(eachfn, arr, iterator, callback) { + _filter(eachfn, arr, function (value, cb) { + iterator(value, function (err, v) { + if (err) { + cb(err); + } else { + cb(null, !v); + } + }); + }, callback); + } - // If a callback is passed, run this as a controll flow - return opts.callback ? wrappedTask() : wrappedTask; - } + var rejectLimit = doParallelLimit(reject$1); - var some = _createTester(eachOf, Boolean, identity); + var reject = doLimit(rejectLimit, Infinity); - var someLimit = _createTester(eachOfLimit, Boolean, identity); + var rejectSeries = doLimit(rejectLimit, 1); - function sortBy(arr, iterator, cb) { - map(arr, function (x, cb) { - iterator(x, function (err, criteria) { - if (err) return cb(err); - cb(null, { value: x, criteria: criteria }); - }); - }, function (err, results) { - if (err) return cb(err); - cb(null, arrayMap(results.sort(comparator), baseProperty('value'))); - }); + function series(tasks, cb) { + return _parallel(eachOfSeries, tasks, cb); + } - function comparator(left, right) { - var a = left.criteria, - b = right.criteria; - return a < b ? -1 : a > b ? 1 : 0; - } - } - - /* Built-in method references for those with the same name as other `lodash` methods. */ - var nativeCeil = Math.ceil; - var nativeMax$2 = Math.max; - /** - * The base implementation of `_.range` and `_.rangeRight` which doesn't - * coerce arguments to numbers. - * - * @private - * @param {number} start The start of the range. - * @param {number} end The end of the range. - * @param {number} step The value to increment or decrement by. - * @param {boolean} [fromRight] Specify iterating from right to left. - * @returns {Array} Returns the new array of numbers. - */ - function baseRange(start, end, step, fromRight) { - var index = -1, - length = nativeMax$2(nativeCeil((end - start) / (step || 1)), 0), - result = Array(length); - - while (length--) { - result[fromRight ? length : ++index] = start; - start += step; - } - return result; - } - - function times (count, iterator, callback) { - map(baseRange(0, count, 1), iterator, callback); - } - - function timeLimit(count, limit, iterator, cb) { - return mapLimit(baseRange(0, count, 1), limit, iterator, cb); - } - - function timesSeries (count, iterator, callback) { - mapSeries(baseRange(0, count, 1), iterator, callback); - } - - function transform(arr, memo, iterator, callback) { - if (arguments.length === 3) { - callback = iterator; - iterator = memo; - memo = isArray(arr) ? [] : {}; - } + function retry(times, task, callback) { + var DEFAULT_TIMES = 5; + var DEFAULT_INTERVAL = 0; + + var opts = { + times: DEFAULT_TIMES, + interval: DEFAULT_INTERVAL + }; + + function parseTimes(acc, t) { + if (typeof t === 'object') { + acc.times = +t.times || DEFAULT_TIMES; + acc.interval = +t.interval || DEFAULT_INTERVAL; + } else if (typeof t === 'number' || typeof t === 'string') { + acc.times = +t || DEFAULT_TIMES; + } else { + throw new Error("Invalid arguments for async.retry"); + } + } - eachOf(arr, function (v, k, cb) { - iterator(memo, v, k, cb); - }, function (err) { - callback(err, memo); - }); - } + if (arguments.length < 3 && typeof times === 'function') { + callback = task || noop; + task = times; + } else { + parseTimes(opts, times); + callback = callback || noop; + } - function unmemoize(fn) { - return function () { - return (fn.unmemoized || fn).apply(null, arguments); - }; - } - - function until(test, iterator, cb) { - return whilst(function () { - return !test.apply(this, arguments); - }, iterator, cb); - } - - function waterfall (tasks, cb) { - cb = once(cb || noop); - if (!isArray(tasks)) return cb(new Error('First argument to waterfall must be an array of functions')); - if (!tasks.length) return cb(); - - function wrapIterator(iterator) { - return rest(function (err, args) { - if (err) { - cb.apply(null, [err].concat(args)); - } else { - var next = iterator.next(); - if (next) { - args.push(wrapIterator(next)); - } else { - args.push(cb); - } - ensureAsync(iterator).apply(null, args); - } - }); + if (typeof task !== 'function') { + throw new Error("Invalid arguments for async.retry"); + } + + var attempts = []; + while (opts.times) { + var isFinalAttempt = !(opts.times -= 1); + attempts.push(retryAttempt(isFinalAttempt)); + if (!isFinalAttempt && opts.interval > 0) { + attempts.push(retryInterval(opts.interval)); + } + } + + series(attempts, function (done, data) { + data = data[data.length - 1]; + callback(data.err, data.result); + }); + + function retryAttempt(isFinalAttempt) { + return function (seriesCallback) { + task(function (err, result) { + seriesCallback(!err || isFinalAttempt, { + err: err, + result: result + }); + }); + }; + } + + function retryInterval(interval) { + return function (seriesCallback) { + setTimeout(function () { + seriesCallback(null); + }, interval); + }; + } + } + + var someLimit = _createTester(eachOfLimit, Boolean, identity); + + var some = doLimit(someLimit, Infinity); + + var someSeries = doLimit(someLimit, 1); + + function sortBy(arr, iterator, cb) { + map(arr, function (x, cb) { + iterator(x, function (err, criteria) { + if (err) return cb(err); + cb(null, { value: x, criteria: criteria }); + }); + }, function (err, results) { + if (err) return cb(err); + cb(null, arrayMap(results.sort(comparator), baseProperty('value'))); + }); + + function comparator(left, right) { + var a = left.criteria, + b = right.criteria; + return a < b ? -1 : a > b ? 1 : 0; + } + } + + function timeout(asyncFn, miliseconds) { + var originalCallback, timer; + var timedOut = false; + + function injectedCallback() { + if (!timedOut) { + originalCallback.apply(null, arguments); + clearTimeout(timer); + } + } + + function timeoutCallback() { + var error = new Error('Callback function timed out.'); + error.code = 'ETIMEDOUT'; + timedOut = true; + originalCallback(error); + } + + function injectCallback(asyncFnArgs) { + // replace callback in asyncFn args + var args = Array.prototype.slice.call(asyncFnArgs, 0); + originalCallback = args[args.length - 1]; + args[args.length - 1] = injectedCallback; + return args; + } + + function wrappedFn() { + // setup timer and call original function + timer = setTimeout(timeoutCallback, miliseconds); + asyncFn.apply(null, injectCallback(arguments)); + } + + return wrappedFn; + } + + /* Built-in method references for those with the same name as other `lodash` methods. */ + var nativeCeil = Math.ceil; + var nativeMax$2 = Math.max; + /** + * The base implementation of `_.range` and `_.rangeRight` which doesn't + * coerce arguments to numbers. + * + * @private + * @param {number} start The start of the range. + * @param {number} end The end of the range. + * @param {number} step The value to increment or decrement by. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Array} Returns the new array of numbers. + */ + function baseRange(start, end, step, fromRight) { + var index = -1, + length = nativeMax$2(nativeCeil((end - start) / (step || 1)), 0), + result = Array(length); + + while (length--) { + result[fromRight ? length : ++index] = start; + start += step; } - wrapIterator(iterator(tasks))(); - } - - var index = { - applyEach: applyEach, - applyEachSeries: applyEachSeries, - apply: apply, - asyncify: asyncify, - auto: auto, - cargo: cargo, - compose: compose, - concat: concat, - concatSeries: concatSeries, - constant: constant, - detect: detect, - detectLimit: detectLimit, - detectSeries: detectSeries, - dir: dir, - doDuring: doDuring, - doUntil: doUntil, - doWhilst: doWhilst, - during: during, - each: each, - eachLimit: eachLimit, - eachOf: eachOf, - eachOfLimit: eachOfLimit, - eachOfSeries: eachOfSeries, - eachSeries: eachSeries, - ensureAsync: ensureAsync, - every: every, - everyLimit: everyLimit, - filter: filter, - filterLimit: filterLimit, - filterSeries: filterSeries, - forever: forever, - iterator: iterator, - log: log, - map: map, - mapLimit: mapLimit, - mapSeries: mapSeries, - memoize: memoize, - nextTick: nexTick, - parallel: parallel, - parallelLimit: parallelLimit, - priorityQueue: priorityQueue, - queue: queue, - reduce: reduce, - reduceRight: reduceRight, - reject: reject, - rejectLimit: rejectLimit, - rejectSeries: rejectSeries, - retry: retry, - seq: seq, - series: series, - setImmediate: setImmediate$1, - some: some, - someLimit: someLimit, - sortBy: sortBy, - times: times, - timesLimit: timeLimit, - timesSeries: timesSeries, - transform: transform, - unmemoize: unmemoize, - until: until, - waterfall: waterfall, - whilst: whilst, - - // aliases - all: every, - any: some, - forEach: each, - forEachSeries: eachSeries, - forEachLimit: eachLimit, - forEachOf: eachOf, - forEachOfSeries: eachOfSeries, - forEachOfLimit: eachOfLimit, - inject: reduce, - foldl: reduce, - foldr: reduceRight, - select: filter, - selectLimit: filterLimit, - selectSeries: filterSeries, - wrapSync: asyncify - }; - - exports['default'] = index; - exports.applyEach = applyEach; - exports.applyEachSeries = applyEachSeries; - exports.apply = apply; - exports.asyncify = asyncify; - exports.auto = auto; - exports.cargo = cargo; - exports.compose = compose; - exports.concat = concat; - exports.concatSeries = concatSeries; - exports.constant = constant; - exports.detect = detect; - exports.detectLimit = detectLimit; - exports.detectSeries = detectSeries; - exports.dir = dir; - exports.doDuring = doDuring; - exports.doUntil = doUntil; - exports.doWhilst = doWhilst; - exports.during = during; - exports.each = each; - exports.eachLimit = eachLimit; - exports.eachOf = eachOf; - exports.eachOfLimit = eachOfLimit; - exports.eachOfSeries = eachOfSeries; - exports.eachSeries = eachSeries; - exports.ensureAsync = ensureAsync; - exports.every = every; - exports.everyLimit = everyLimit; - exports.filter = filter; - exports.filterLimit = filterLimit; - exports.filterSeries = filterSeries; - exports.forever = forever; - exports.iterator = iterator; - exports.log = log; - exports.map = map; - exports.mapLimit = mapLimit; - exports.mapSeries = mapSeries; - exports.memoize = memoize; - exports.nextTick = nexTick; - exports.parallel = parallel; - exports.parallelLimit = parallelLimit; - exports.priorityQueue = priorityQueue; - exports.queue = queue; - exports.reduce = reduce; - exports.reduceRight = reduceRight; - exports.reject = reject; - exports.rejectLimit = rejectLimit; - exports.rejectSeries = rejectSeries; - exports.retry = retry; - exports.seq = seq; - exports.series = series; - exports.setImmediate = setImmediate$1; - exports.some = some; - exports.someLimit = someLimit; - exports.sortBy = sortBy; - exports.times = times; - exports.timesLimit = timeLimit; - exports.timesSeries = timesSeries; - exports.transform = transform; - exports.unmemoize = unmemoize; - exports.until = until; - exports.waterfall = waterfall; - exports.whilst = whilst; - exports.all = every; - exports.any = some; - exports.forEach = each; - exports.forEachSeries = eachSeries; - exports.forEachLimit = eachLimit; - exports.forEachOf = eachOf; - exports.forEachOfSeries = eachOfSeries; - exports.forEachOfLimit = eachOfLimit; - exports.inject = reduce; - exports.foldl = reduce; - exports.foldr = reduceRight; - exports.select = filter; - exports.selectLimit = filterLimit; - exports.selectSeries = filterSeries; - exports.wrapSync = asyncify; + return result; + } + + function timeLimit(count, limit, iterator, cb) { + return mapLimit(baseRange(0, count, 1), limit, iterator, cb); + } + + var times = doLimit(timeLimit, Infinity); + + var timesSeries = doLimit(timeLimit, 1); + + function transform(arr, memo, iterator, callback) { + if (arguments.length === 3) { + callback = iterator; + iterator = memo; + memo = isArray(arr) ? [] : {}; + } + + eachOf(arr, function (v, k, cb) { + iterator(memo, v, k, cb); + }, function (err) { + callback(err, memo); + }); + } + + function unmemoize(fn) { + return function () { + return (fn.unmemoized || fn).apply(null, arguments); + }; + } + + function until(test, iterator, cb) { + return whilst(function () { + return !test.apply(this, arguments); + }, iterator, cb); + } + + function waterfall (tasks, cb) { + cb = once(cb || noop); + if (!isArray(tasks)) return cb(new Error('First argument to waterfall must be an array of functions')); + if (!tasks.length) return cb(); + var taskIndex = 0; + + function nextTask(args) { + if (taskIndex === tasks.length) { + return cb.apply(null, [null].concat(args)); + } + + var taskCallback = onlyOnce(rest(function (err, args) { + if (err) { + return cb.apply(null, [err].concat(args)); + } + nextTask(args); + })); + + args.push(taskCallback); + + var task = tasks[taskIndex++]; + task.apply(null, args); + } + + nextTask([]); + } + + var index = { + applyEach: applyEach, + applyEachSeries: applyEachSeries, + apply: apply$1, + asyncify: asyncify, + auto: auto, + autoInject: autoInject, + cargo: cargo, + compose: compose, + concat: concat, + concatSeries: concatSeries, + constant: constant$1, + detect: detect, + detectLimit: detectLimit, + detectSeries: detectSeries, + dir: dir, + doDuring: doDuring, + doUntil: doUntil, + doWhilst: doWhilst, + during: during, + each: each, + eachLimit: eachLimit, + eachOf: eachOf, + eachOfLimit: eachOfLimit, + eachOfSeries: eachOfSeries, + eachSeries: eachSeries, + ensureAsync: ensureAsync, + every: every, + everyLimit: everyLimit, + everySeries: everySeries, + filter: filter, + filterLimit: filterLimit, + filterSeries: filterSeries, + forever: forever, + iterator: iterator, + log: log, + map: map, + mapLimit: mapLimit, + mapSeries: mapSeries, + memoize: memoize, + nextTick: setImmediate$1, + parallel: parallel, + parallelLimit: parallelLimit, + priorityQueue: priorityQueue, + queue: queue$1, + race: race, + reduce: reduce, + reduceRight: reduceRight, + reject: reject, + rejectLimit: rejectLimit, + rejectSeries: rejectSeries, + retry: retry, + seq: seq, + series: series, + setImmediate: setImmediate$1, + some: some, + someLimit: someLimit, + someSeries: someSeries, + sortBy: sortBy, + timeout: timeout, + times: times, + timesLimit: timeLimit, + timesSeries: timesSeries, + transform: transform, + unmemoize: unmemoize, + until: until, + waterfall: waterfall, + whilst: whilst, + + // aliases + all: every, + any: some, + forEach: each, + forEachSeries: eachSeries, + forEachLimit: eachLimit, + forEachOf: eachOf, + forEachOfSeries: eachOfSeries, + forEachOfLimit: eachOfLimit, + inject: reduce, + foldl: reduce, + foldr: reduceRight, + select: filter, + selectLimit: filterLimit, + selectSeries: filterSeries, + wrapSync: asyncify + }; + + exports['default'] = index; + exports.applyEach = applyEach; + exports.applyEachSeries = applyEachSeries; + exports.apply = apply$1; + exports.asyncify = asyncify; + exports.auto = auto; + exports.autoInject = autoInject; + exports.cargo = cargo; + exports.compose = compose; + exports.concat = concat; + exports.concatSeries = concatSeries; + exports.constant = constant$1; + exports.detect = detect; + exports.detectLimit = detectLimit; + exports.detectSeries = detectSeries; + exports.dir = dir; + exports.doDuring = doDuring; + exports.doUntil = doUntil; + exports.doWhilst = doWhilst; + exports.during = during; + exports.each = each; + exports.eachLimit = eachLimit; + exports.eachOf = eachOf; + exports.eachOfLimit = eachOfLimit; + exports.eachOfSeries = eachOfSeries; + exports.eachSeries = eachSeries; + exports.ensureAsync = ensureAsync; + exports.every = every; + exports.everyLimit = everyLimit; + exports.everySeries = everySeries; + exports.filter = filter; + exports.filterLimit = filterLimit; + exports.filterSeries = filterSeries; + exports.forever = forever; + exports.iterator = iterator; + exports.log = log; + exports.map = map; + exports.mapLimit = mapLimit; + exports.mapSeries = mapSeries; + exports.memoize = memoize; + exports.nextTick = setImmediate$1; + exports.parallel = parallel; + exports.parallelLimit = parallelLimit; + exports.priorityQueue = priorityQueue; + exports.queue = queue$1; + exports.race = race; + exports.reduce = reduce; + exports.reduceRight = reduceRight; + exports.reject = reject; + exports.rejectLimit = rejectLimit; + exports.rejectSeries = rejectSeries; + exports.retry = retry; + exports.seq = seq; + exports.series = series; + exports.setImmediate = setImmediate$1; + exports.some = some; + exports.someLimit = someLimit; + exports.someSeries = someSeries; + exports.sortBy = sortBy; + exports.timeout = timeout; + exports.times = times; + exports.timesLimit = timeLimit; + exports.timesSeries = timesSeries; + exports.transform = transform; + exports.unmemoize = unmemoize; + exports.until = until; + exports.waterfall = waterfall; + exports.whilst = whilst; + exports.all = every; + exports.allLimit = everyLimit; + exports.allSeries = everySeries; + exports.any = some; + exports.anyLimit = someLimit; + exports.anySeries = someSeries; + exports.find = detect; + exports.findLimit = detectLimit; + exports.findSeries = detectSeries; + exports.forEach = each; + exports.forEachSeries = eachSeries; + exports.forEachLimit = eachLimit; + exports.forEachOf = eachOf; + exports.forEachOfSeries = eachOfSeries; + exports.forEachOfLimit = eachOfLimit; + exports.inject = reduce; + exports.foldl = reduce; + exports.foldr = reduceRight; + exports.select = filter; + exports.selectLimit = filterLimit; + exports.selectSeries = filterSeries; + exports.wrapSync = asyncify; }));
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