diff options
author | Florian Dold <florian.dold@gmail.com> | 2016-10-10 03:43:44 +0200 |
---|---|---|
committer | Florian Dold <florian.dold@gmail.com> | 2016-10-10 03:43:44 +0200 |
commit | abd94a7f5a50f43c797a11b53549ae48fff667c3 (patch) | |
tree | ab8ed457f65cdd72e13e0571d2975729428f1551 /node_modules/async/dist | |
parent | a0247c6a3fd6a09a41a7e35a3441324c4dcb58be (diff) | |
download | wallet-core-abd94a7f5a50f43c797a11b53549ae48fff667c3.tar.xz |
add node_modules to address #4364
Diffstat (limited to 'node_modules/async/dist')
-rw-r--r-- | node_modules/async/dist/async.js | 5215 | ||||
-rw-r--r-- | node_modules/async/dist/async.min.js | 2 |
2 files changed, 5217 insertions, 0 deletions
diff --git a/node_modules/async/dist/async.js b/node_modules/async/dist/async.js new file mode 100644 index 000000000..609d9cd47 --- /dev/null +++ b/node_modules/async/dist/async.js @@ -0,0 +1,5215 @@ +(function (global, factory) { + 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 {Array} 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]); + } + return func.apply(thisArg, args); + } + + /** + * Checks if `value` is the + * [language type](http://www.ecma-international.org/ecma-262/6.0/#sec-ecmascript-language-types) + * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`) + * + * @static + * @memberOf _ + * @since 0.1.0 + * @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 _ + * @since 0.1.0 + * @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; + } + + /** + * 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 _ + * @since 4.0.0 + * @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'; + } + + /** `Object#toString` result references. */ + var symbolTag = '[object Symbol]'; + + /** Used for built-in method references. */ + var objectProto$1 = 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$1.toString; + + /** + * Checks if `value` is classified as a `Symbol` primitive or object. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @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$1.call(value) == symbolTag); + } + + /** Used as references for various `Number` constants. */ + var NAN = 0 / 0; + + /** Used to match leading and trailing whitespace. */ + var reTrim = /^\s+|\s+$/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 _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to process. + * @returns {number} Returns the number. + * @example + * + * _.toNumber(3.2); + * // => 3.2 + * + * _.toNumber(Number.MIN_VALUE); + * // => 5e-324 + * + * _.toNumber(Infinity); + * // => Infinity + * + * _.toNumber('3.2'); + * // => 3.2 + */ + function toNumber(value) { + if (typeof value == 'number') { + return value; + } + if (isSymbol(value)) { + return NAN; + } + 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 a finite number. + * + * @static + * @memberOf _ + * @since 4.12.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted number. + * @example + * + * _.toFinite(3.2); + * // => 3.2 + * + * _.toFinite(Number.MIN_VALUE); + * // => 5e-324 + * + * _.toFinite(Infinity); + * // => 1.7976931348623157e+308 + * + * _.toFinite('3.2'); + * // => 3.2 + */ + function toFinite(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; + } + return value === value ? value : 0; + } + + /** + * Converts `value` to an integer. + * + * **Note:** This method is loosely based on + * [`ToInteger`](http://www.ecma-international.org/ecma-262/6.0/#sec-tointeger). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted integer. + * @example + * + * _.toInteger(3.2); + * // => 3 + * + * _.toInteger(Number.MIN_VALUE); + * // => 0 + * + * _.toInteger(Infinity); + * // => 1.7976931348623157e+308 + * + * _.toInteger('3.2'); + * // => 3 + */ + function toInteger(value) { + var result = toFinite(value), + remainder = result % 1; + + return result === result ? (remainder ? result - remainder : result) : 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 _ + * @since 4.0.0 + * @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); + }; + } + + function initialParams (fn) { + return rest(function (args /*..., callback*/) { + var callback = args.pop(); + fn.call(this, args, callback); + }); + } + + function applyEach$1(eachfn) { + return rest(function (fns, args) { + var go = initialParams(function (args, callback) { + var that = this; + return eachfn(fns, function (fn, cb) { + fn.apply(that, args.concat([cb])); + }, callback); + }); + if (args.length) { + return go.apply(this, args); + } else { + return go; + } + }); + } + + /** + * 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 accessor 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 = 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 _ + * @since 4.0.0 + * @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; + } + + /** + * 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 _ + * @since 4.0.0 + * @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); + } + + /** + * A method that returns `undefined`. + * + * @static + * @memberOf _ + * @since 2.3.0 + * @category Util + * @example + * + * _.times(2, _.noop); + * // => [undefined, undefined] + */ + function noop() { + // No operation performed. + } + + function once(fn) { + return function () { + if (fn === null) return; + var callFn = fn; + fn = null; + callFn.apply(this, arguments); + }; + } + + var iteratorSymbol = typeof Symbol === 'function' && Symbol.iterator; + + function getIterator (coll) { + return iteratorSymbol && coll[iteratorSymbol] && coll[iteratorSymbol](); + } + + /* Built-in method references for those with the same name as other `lodash` methods. */ + var nativeGetPrototype = Object.getPrototypeOf; + + /** + * Gets the `[[Prototype]]` of `value`. + * + * @private + * @param {*} value The value to query. + * @returns {null|Object} Returns the `[[Prototype]]`. + */ + function getPrototype(value) { + return nativeGetPrototype(Object(value)); + } + + /** Used for built-in method references. */ + var objectProto$2 = Object.prototype; + + /** Used to check objects for own properties. */ + var hasOwnProperty = objectProto$2.hasOwnProperty; + + /** + * 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 object != null && + (hasOwnProperty.call(object, key) || + (typeof object == 'object' && key in object && getPrototype(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 (++index < n) { + result[index] = iteratee(index); + } + return result; + } + + /** + * This method is like `_.isArrayLike` except that it also checks if `value` + * is an object. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @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$3 = Object.prototype; + + /** Used to check objects for own properties. */ + var hasOwnProperty$1 = objectProto$3.hasOwnProperty; + + /** + * 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; + + /** Built-in value references. */ + var propertyIsEnumerable = objectProto$3.propertyIsEnumerable; + + /** + * Checks if `value` is likely an `arguments` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @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$2.call(value) == argsTag); + } + + /** + * Checks if `value` is classified as an `Array` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @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$4 = 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$4.toString; + + /** + * Checks if `value` is classified as a `String` primitive or object. + * + * @static + * @since 0.1.0 + * @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$3.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$1 = 9007199254740991; + + /** Used to detect unsigned integer values. */ + var reIsUint = /^(?:0|[1-9]\d*)$/; + + /** + * 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) { + length = length == null ? MAX_SAFE_INTEGER$1 : length; + return !!length && + (typeof value == 'number' || reIsUint.test(value)) && + (value > -1 && value % 1 == 0 && value < length); + } + + /** Used for built-in method references. */ + var objectProto$5 = 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$5; + + 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 + * @since 0.1.0 + * @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; + } + + function createArrayIterator(coll) { + var i = -1; + var len = coll.length; + return function next() { + return ++i < len ? { value: coll[i], key: i } : null; + }; + } + + function createES2015Iterator(iterator) { + var i = -1; + return function next() { + var item = iterator.next(); + if (item.done) return null; + i++; + return { value: item.value, key: i }; + }; + } + + function createObjectIterator(obj) { + var okeys = keys(obj); + var i = -1; + var len = okeys.length; + return function next() { + var key = okeys[++i]; + return i < len ? { value: obj[key], key: key } : null; + }; + } + + function iterator(coll) { + if (isArrayLike(coll)) { + return createArrayIterator(coll); + } + + var iterator = getIterator(coll); + return iterator ? createES2015Iterator(iterator) : createObjectIterator(coll); + } + + function onlyOnce(fn) { + return function () { + if (fn === null) throw new Error("Callback was already called."); + var callFn = fn; + fn = null; + callFn.apply(this, arguments); + }; + } + + function _eachOfLimit(limit) { + return function (obj, iteratee, callback) { + callback = once(callback || noop); + if (limit <= 0 || !obj) { + return callback(null); + } + var nextElem = iterator(obj); + var done = false; + var running = 0; + + function iterateeCallback(err) { + running -= 1; + if (err) { + done = true; + callback(err); + } else if (done && running <= 0) { + return callback(null); + } else { + replenish(); + } + } + + function replenish() { + while (running < limit && !done) { + var elem = nextElem(); + if (elem === null) { + done = true; + if (running <= 0) { + callback(null); + } + return; + } + running += 1; + iteratee(elem.value, elem.key, onlyOnce(iterateeCallback)); + } + } + + replenish(); + }; + } + + /** + * The same as [`eachOf`]{@link module:Collections.eachOf} but runs a maximum of `limit` async operations at a + * time. + * + * @name eachOfLimit + * @static + * @memberOf module:Collections + * @method + * @see [async.eachOf]{@link module:Collections.eachOf} + * @alias forEachOfLimit + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {number} limit - The maximum number of async operations at a time. + * @param {Function} iteratee - A function to apply to each + * item in `coll`. The `key` is the item's key, or index in the case of an + * array. The iteratee is passed a `callback(err)` which must be called once it + * has completed. If no error has occurred, the callback should be run without + * arguments or with an explicit `null` argument. Invoked with + * (item, key, callback). + * @param {Function} [callback] - A callback which is called when all + * `iteratee` functions have finished, or an error occurs. Invoked with (err). + */ + function eachOfLimit(coll, limit, iteratee, callback) { + _eachOfLimit(limit)(coll, iteratee, callback); + } + + function doLimit(fn, limit) { + return function (iterable, iteratee, callback) { + return fn(iterable, limit, iteratee, callback); + }; + } + + /** 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 _ + * @since 3.0.0 + * @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 _ + * @since 0.1.0 + * @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$1(func) { + return before(2, func); + } + + // eachOf implementation optimized for array-likes + function eachOfArrayLike(coll, iteratee, callback) { + callback = once$1(callback || noop); + var index = 0, + completed = 0, + length = coll.length; + if (length === 0) { + callback(null); + } + + function iteratorCallback(err) { + if (err) { + callback(err); + } else if (++completed === length) { + callback(null); + } + } + + for (; index < length; index++) { + iteratee(coll[index], index, onlyOnce(iteratorCallback)); + } + } + + // a generic version of eachOf which can handle array, object, and iterator cases. + var eachOfGeneric = doLimit(eachOfLimit, Infinity); + + /** + * Like [`each`]{@link module:Collections.each}, except that it passes the key (or index) as the second argument + * to the iteratee. + * + * @name eachOf + * @static + * @memberOf module:Collections + * @method + * @alias forEachOf + * @category Collection + * @see [async.each]{@link module:Collections.each} + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A function to apply to each + * item in `coll`. The `key` is the item's key, or index in the case of an + * array. The iteratee is passed a `callback(err)` which must be called once it + * has completed. If no error has occurred, the callback should be run without + * arguments or with an explicit `null` argument. Invoked with + * (item, key, callback). + * @param {Function} [callback] - A callback which is called when all + * `iteratee` functions have finished, or an error occurs. Invoked with (err). + * @example + * + * var obj = {dev: "/dev.json", test: "/test.json", prod: "/prod.json"}; + * var configs = {}; + * + * async.forEachOf(obj, function (value, key, callback) { + * fs.readFile(__dirname + value, "utf8", function (err, data) { + * if (err) return callback(err); + * try { + * configs[key] = JSON.parse(data); + * } catch (e) { + * return callback(e); + * } + * callback(); + * }); + * }, function (err) { + * if (err) console.error(err.message); + * // configs is now a map of JSON data + * doSomethingWith(configs); + * }); + */ + function eachOf (coll, iteratee, callback) { + var eachOfImplementation = isArrayLike(coll) ? eachOfArrayLike : eachOfGeneric; + eachOfImplementation(coll, iteratee, callback); + } + + function doParallel(fn) { + return function (obj, iteratee, callback) { + return fn(eachOf, obj, iteratee, callback); + }; + } + + function _asyncMap(eachfn, arr, iteratee, callback) { + callback = once(callback || noop); + arr = arr || []; + var results = []; + var counter = 0; + + eachfn(arr, function (value, _, callback) { + var index = counter++; + iteratee(value, function (err, v) { + results[index] = v; + callback(err); + }); + }, function (err) { + callback(err, results); + }); + } + + /** + * Produces a new collection of values by mapping each value in `coll` through + * the `iteratee` function. The `iteratee` is called with an item from `coll` + * and a callback for when it has finished processing. Each of these callback + * takes 2 arguments: an `error`, and the transformed item from `coll`. If + * `iteratee` passes an error to its callback, the main `callback` (for the + * `map` function) is immediately called with the error. + * + * Note, that since this function applies the `iteratee` to each item in + * parallel, there is no guarantee that the `iteratee` functions will complete + * in order. However, the results array will be in the same order as the + * original `coll`. + * + * If `map` is passed an Object, the results will be an Array. The results + * will roughly be in the order of the original Objects' keys (but this can + * vary across JavaScript engines) + * + * @name map + * @static + * @memberOf module:Collections + * @method + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A function to apply to each item in `coll`. + * The iteratee is passed a `callback(err, transformed)` which must be called + * once it has completed with an error (which can be `null`) and a + * transformed item. Invoked with (item, callback). + * @param {Function} [callback] - A callback which is called when all `iteratee` + * functions have finished, or an error occurs. Results is an Array of the + * transformed items from the `coll`. Invoked with (err, results). + * @example + * + * async.map(['file1','file2','file3'], fs.stat, function(err, results) { + * // results is now an array of stats for each file + * }); + */ + var map = doParallel(_asyncMap); + + /** + * Applies the provided arguments to each function in the array, calling + * `callback` after all functions have completed. If you only provide the first + * argument, then it will return a function which lets you pass in the + * arguments as if it were a single function call. + * + * @name applyEach + * @static + * @memberOf module:ControlFlow + * @method + * @category Control Flow + * @param {Array|Iterable|Object} fns - A collection of asynchronous functions to all + * call with the same arguments + * @param {...*} [args] - any number of separate arguments to pass to the + * function. + * @param {Function} [callback] - the final argument should be the callback, + * called when all functions have completed processing. + * @returns {Function} - If only the first argument is provided, it will return + * a function which lets you pass in the arguments as if it were a single + * function call. + * @example + * + * async.applyEach([enableSearch, updateSchema], 'bucket', callback); + * + * // partial application example: + * async.each( + * buckets, + * async.applyEach([enableSearch, updateSchema]), + * callback + * ); + */ + var applyEach = applyEach$1(map); + + function doParallelLimit(fn) { + return function (obj, limit, iteratee, callback) { + return fn(_eachOfLimit(limit), obj, iteratee, callback); + }; + } + + /** + * The same as [`map`]{@link module:Collections.map} but runs a maximum of `limit` async operations at a time. + * + * @name mapLimit + * @static + * @memberOf module:Collections + * @method + * @see [async.map]{@link module:Collections.map} + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {number} limit - The maximum number of async operations at a time. + * @param {Function} iteratee - A function to apply to each item in `coll`. + * The iteratee is passed a `callback(err, transformed)` which must be called + * once it has completed with an error (which can be `null`) and a transformed + * item. Invoked with (item, callback). + * @param {Function} [callback] - A callback which is called when all `iteratee` + * functions have finished, or an error occurs. Results is an array of the + * transformed items from the `coll`. Invoked with (err, results). + */ + var mapLimit = doParallelLimit(_asyncMap); + + /** + * The same as [`map`]{@link module:Collections.map} but runs only a single async operation at a time. + * + * @name mapSeries + * @static + * @memberOf module:Collections + * @method + * @see [async.map]{@link module:Collections.map} + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A function to apply to each item in `coll`. + * The iteratee is passed a `callback(err, transformed)` which must be called + * once it has completed with an error (which can be `null`) and a + * transformed item. Invoked with (item, callback). + * @param {Function} [callback] - A callback which is called when all `iteratee` + * functions have finished, or an error occurs. Results is an array of the + * transformed items from the `coll`. Invoked with (err, results). + */ + var mapSeries = doLimit(mapLimit, 1); + + /** + * The same as [`applyEach`]{@link module:ControlFlow.applyEach} but runs only a single async operation at a time. + * + * @name applyEachSeries + * @static + * @memberOf module:ControlFlow + * @method + * @see [async.applyEach]{@link module:ControlFlow.applyEach} + * @category Control Flow + * @param {Array|Iterable|Object} fns - A collection of asynchronous functions to all + * call with the same arguments + * @param {...*} [args] - any number of separate arguments to pass to the + * function. + * @param {Function} [callback] - the final argument should be the callback, + * called when all functions have completed processing. + * @returns {Function} - If only the first argument is provided, it will return + * a function which lets you pass in the arguments as if it were a single + * function call. + */ + var applyEachSeries = applyEach$1(mapSeries); + + /** + * Creates a continuation function with some arguments already applied. + * + * Useful as a shorthand when combined with other control flow functions. Any + * arguments passed to the returned function are added to the arguments + * originally passed to apply. + * + * @name apply + * @static + * @memberOf module:Utils + * @method + * @category Util + * @param {Function} function - The function you want to eventually apply all + * arguments to. Invokes with (arguments...). + * @param {...*} arguments... - Any number of arguments to automatically apply + * when the continuation is called. + * @example + * + * // using apply + * async.parallel([ + * async.apply(fs.writeFile, 'testfile1', 'test1'), + * async.apply(fs.writeFile, 'testfile2', 'test2') + * ]); + * + * + * // the same process without using apply + * async.parallel([ + * function(callback) { + * fs.writeFile('testfile1', 'test1', callback); + * }, + * function(callback) { + * fs.writeFile('testfile2', 'test2', callback); + * } + * ]); + * + * // It's possible to pass any number of additional arguments when calling the + * // continuation: + * + * node> var fn = async.apply(sys.puts, 'one'); + * node> fn('two', 'three'); + * one + * two + * three + */ + var apply$1 = rest(function (fn, args) { + return rest(function (callArgs) { + return fn.apply(null, args.concat(callArgs)); + }); + }); + + /** + * Take a sync function and make it async, passing its return value to a + * callback. This is useful for plugging sync functions into a waterfall, + * series, or other async functions. Any arguments passed to the generated + * function will be passed to the wrapped function (except for the final + * callback argument). Errors thrown will be passed to the callback. + * + * If the function passed to `asyncify` returns a Promise, that promises's + * resolved/rejected state will be used to call the callback, rather than simply + * the synchronous return value. + * + * This also means you can asyncify ES2016 `async` functions. + * + * @name asyncify + * @static + * @memberOf module:Utils + * @method + * @alias wrapSync + * @category Util + * @param {Function} func - The synchronous function to convert to an + * asynchronous function. + * @returns {Function} An asynchronous wrapper of the `func`. To be invoked with + * (callback). + * @example + * + * // passing a regular synchronous function + * async.waterfall([ + * async.apply(fs.readFile, filename, "utf8"), + * async.asyncify(JSON.parse), + * function (data, next) { + * // data is the result of parsing the text. + * // If there was a parsing error, it would have been caught. + * } + * ], callback); + * + * // passing a function returning a promise + * async.waterfall([ + * async.apply(fs.readFile, filename, "utf8"), + * async.asyncify(function (contents) { + * return db.model.create(contents); + * }), + * function (model, next) { + * // `model` is the instantiated model object. + * // If there was an error, this function would be skipped. + * } + * ], callback); + * + * // es6 example + * var q = async.queue(async.asyncify(async function(file) { + * var intermediateStep = await processFile(file); + * return await somePromise(intermediateStep) + * })); + * + * q.push(files); + */ + function asyncify(func) { + return initialParams(function (args, callback) { + 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); + }, 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 ? array.length : 0; + + while (++index < length) { + if (iteratee(array[index], index, array) === false) { + break; + } + } + return array; + } + + /** + * Creates a base function for methods like `_.forIn` and `_.forOwn`. + * + * @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; + } + } + return object; + }; + } + + /** + * The base implementation of `baseForOwn` which iterates over `object` + * properties returned by `keysFunc` and invokes `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); + } + + /** + * 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 ? 1 : -1); + + while ((fromRight ? index-- : ++index < length)) { + var other = array[index]; + if (other !== other) { + return index; + } + } + 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; + } + } + return -1; + } + + /** + * Determines the best order for running the functions in `tasks`, based on + * their requirements. Each function can optionally depend on other functions + * being completed first, and each function is run as soon as its requirements + * are satisfied. + * + * If any of the functions pass an error to their callback, the `auto` sequence + * will stop. Further tasks will not execute (so any other functions depending + * on it will not run), and the main `callback` is immediately called with the + * error. + * + * Functions also receive an object containing the results of functions which + * have completed so far as the first argument, if they have dependencies. If a + * task function has no dependencies, it will only be passed a callback. + * + * @name auto + * @static + * @memberOf module:ControlFlow + * @method + * @category Control Flow + * @param {Object} tasks - An object. Each of its properties is either a + * function or an array of requirements, with the function itself the last item + * in the array. The object's key of a property serves as the name of the task + * defined by that property, i.e. can be used when specifying requirements for + * other tasks. The function receives one or two arguments: + * * a `results` object, containing the results of the previously executed + * functions, only passed if the task has any dependencies, + * * a `callback(err, result)` function, which must be called when finished, + * passing an `error` (which can be `null`) and the result of the function's + * execution. + * @param {number} [concurrency=Infinity] - An optional `integer` for + * determining the maximum number of tasks that can be run in parallel. By + * default, as many as possible. + * @param {Function} [callback] - An optional callback which is called when all + * the tasks have been completed. It receives the `err` argument if any `tasks` + * pass an error to their callback. Results are always returned; however, if an + * error occurs, no further `tasks` will be performed, and the results object + * will only contain partial results. Invoked with (err, results). + * @returns undefined + * @example + * + * async.auto({ + * // this function will just be passed a callback + * readData: async.apply(fs.readFile, 'data.txt', 'utf-8'), + * showData: ['readData', function(results, cb) { + * // results.readData is the file's contents + * // ... + * }] + * }, callback); + * + * async.auto({ + * get_data: function(callback) { + * console.log('in get_data'); + * // async code to get some data + * callback(null, 'data', 'converted to array'); + * }, + * make_folder: function(callback) { + * console.log('in make_folder'); + * // async code to create a directory to store a file in + * // this is run at the same time as getting the data + * callback(null, 'folder'); + * }, + * write_file: ['get_data', 'make_folder', function(results, callback) { + * console.log('in write_file', JSON.stringify(results)); + * // once there is some data and the directory exists, + * // write the data to a file in the directory + * callback(null, 'filename'); + * }], + * email_link: ['write_file', function(results, callback) { + * console.log('in email_link', JSON.stringify(results)); + * // once the file is written let's email a link to it... + * // results.write_file contains the filename returned by write_file. + * callback(null, {'file':results.write_file, 'email':'user@example.com'}); + * }] + * }, function(err, results) { + * console.log('err = ', err); + * console.log('results = ', results); + * }); + */ + 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 = []; + + // for cycle detection: + var readyToCheck = []; // tasks that have been identified as reachable + // without the possibility of returning to an ancestor task + var uncheckedDependencies = {}; + + baseForOwn(tasks, function (task, key) { + if (!isArray(task)) { + // no dependencies + enqueueTask(key, [task]); + readyToCheck.push(key); + return; + } + + var dependencies = task.slice(0, task.length - 1); + var remainingDependencies = dependencies.length; + if (remainingDependencies === 0) { + enqueueTask(key, task); + readyToCheck.push(key); + return; + } + uncheckedDependencies[key] = remainingDependencies; + + arrayEach(dependencies, function (dependencyName) { + if (!tasks[dependencyName]) { + throw new Error('async.auto task `' + key + '` has a non-existent dependency in ' + dependencies.join(', ')); + } + addListener(dependencyName, function () { + remainingDependencies--; + if (remainingDependencies === 0) { + enqueueTask(key, task); + } + }); + }); + }); + + checkForDeadlocks(); + 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 = {}; + baseForOwn(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); + } + } + + function checkForDeadlocks() { + // Kahn's algorithm + // https://en.wikipedia.org/wiki/Topological_sorting#Kahn.27s_algorithm + // http://connalle.blogspot.com/2013/10/topological-sortingkahn-algorithm.html + var currentTask; + var counter = 0; + while (readyToCheck.length) { + currentTask = readyToCheck.pop(); + counter++; + arrayEach(getDependents(currentTask), function (dependent) { + if (--uncheckedDependencies[dependent] === 0) { + readyToCheck.push(dependent); + } + }); + } + + if (counter !== numTasks) { + throw new Error('async.auto cannot execute tasks due to a recursive dependency'); + } + } + + function getDependents(taskName) { + var result = []; + baseForOwn(tasks, function (task, key) { + if (isArray(task) && baseIndexOf(task, taskName, 0) >= 0) { + result.push(key); + } + }); + return result; + } + } + + /** + * 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 ? array.length : 0, + result = Array(length); + + while (++index < length) { + result[index] = iteratee(array[index], index, array); + } + 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; + + array || (array = Array(length)); + while (++index < length) { + array[index] = source[index]; + } + return array; + } + + /** + * 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; + } + + /** Detect free variable `global` from Node.js. */ + var freeGlobal = checkGlobal(typeof global == 'object' && global); + + /** Detect free variable `self`. */ + var freeSelf = checkGlobal(typeof self == 'object' && self); + + /** Detect `this` as the global object. */ + var thisGlobal = checkGlobal(typeof this == 'object' && this); + + /** Used as a reference to the global object. */ + var root = freeGlobal || freeSelf || thisGlobal || Function('return this')(); + + /** Built-in value references. */ + var Symbol$1 = root.Symbol; + + /** Used as references for various `Number` constants. */ + var INFINITY$1 = 1 / 0; + + /** Used to convert symbols to primitives and strings. */ + var symbolProto = Symbol$1 ? Symbol$1.prototype : undefined; + var symbolToString = symbolProto ? symbolProto.toString : undefined; + /** + * The base implementation of `_.toString` which doesn't convert nullish + * values to empty strings. + * + * @private + * @param {*} value The value to process. + * @returns {string} Returns the string. + */ + function baseToString(value) { + // Exit early for strings to avoid a performance hit in some environments. + if (typeof value == 'string') { + return value; + } + if (isSymbol(value)) { + return symbolToString ? symbolToString.call(value) : ''; + } + var result = (value + ''); + return (result == '0' && (1 / value) == -INFINITY$1) ? '-0' : result; + } + + /** + * 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; + } + + /** + * Casts `array` to a slice if it's needed. + * + * @private + * @param {Array} array The array to inspect. + * @param {number} start The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns the cast slice. + */ + function castSlice(array, start, end) { + var length = array.length; + end = end === undefined ? length : end; + return (!start && end >= length) ? array : baseSlice(array, start, end); + } + + /** + * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol + * that is not found in the character symbols. + * + * @private + * @param {Array} strSymbols The string symbols to inspect. + * @param {Array} chrSymbols The character symbols to find. + * @returns {number} Returns the index of the last unmatched string symbol. + */ + function charsEndIndex(strSymbols, chrSymbols) { + var index = strSymbols.length; + + while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {} + return index; + } + + /** + * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol + * that is not found in the character symbols. + * + * @private + * @param {Array} strSymbols The string symbols to inspect. + * @param {Array} chrSymbols The character symbols to find. + * @returns {number} Returns the index of the first unmatched string symbol. + */ + function charsStartIndex(strSymbols, chrSymbols) { + var index = -1, + length = strSymbols.length; + + while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {} + return index; + } + + /** Used to compose unicode character classes. */ + var rsAstralRange = '\\ud800-\\udfff'; + var rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23'; + var rsComboSymbolsRange = '\\u20d0-\\u20f0'; + var rsVarRange = '\\ufe0e\\ufe0f'; + var rsAstral = '[' + rsAstralRange + ']'; + var rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']'; + var rsFitz = '\\ud83c[\\udffb-\\udfff]'; + var rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')'; + var rsNonAstral = '[^' + rsAstralRange + ']'; + var rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}'; + var rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]'; + var rsZWJ = '\\u200d'; + var reOptMod = rsModifier + '?'; + var rsOptVar = '[' + rsVarRange + ']?'; + var rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*'; + var rsSeq = rsOptVar + reOptMod + rsOptJoin; + var rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')'; + /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */ + var reComplexSymbol = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g'); + + /** + * Converts `string` to an array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the converted array. + */ + function stringToArray(string) { + return string.match(reComplexSymbol); + } + + /** + * Converts `value` to a string. An empty string is returned for `null` + * and `undefined` values. The sign of `-0` is preserved. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @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) { + return value == null ? '' : baseToString(value); + } + + /** Used to match leading and trailing whitespace. */ + var reTrim$1 = /^\s+|\s+$/g; + + /** + * Removes leading and trailing whitespace or specified characters from `string`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to trim. + * @param {string} [chars=whitespace] The characters to trim. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {string} Returns the trimmed string. + * @example + * + * _.trim(' abc '); + * // => 'abc' + * + * _.trim('-_-abc-_-', '_-'); + * // => 'abc' + * + * _.map([' foo ', ' bar '], _.trim); + * // => ['foo', 'bar'] + */ + function trim(string, chars, guard) { + string = toString(string); + if (string && (guard || chars === undefined)) { + return string.replace(reTrim$1, ''); + } + if (!string || !(chars = baseToString(chars))) { + return string; + } + var strSymbols = stringToArray(string), + chrSymbols = stringToArray(chars), + start = charsStartIndex(strSymbols, chrSymbols), + end = charsEndIndex(strSymbols, chrSymbols) + 1; + + return castSlice(strSymbols, start, end).join(''); + } + + var FN_ARGS = /^(function)?\s*[^\(]*\(\s*([^\)]*)\)/m; + var FN_ARG_SPLIT = /,/; + var FN_ARG = /(=.+)?(\s*)$/; + var STRIP_COMMENTS = /((\/\/.*$)|(\/\*[\s\S]*?\*\/))/mg; + + function parseParams(func) { + func = func.toString().replace(STRIP_COMMENTS, ''); + func = func.match(FN_ARGS)[2].replace(' ', ''); + func = func ? func.split(FN_ARG_SPLIT) : []; + func = func.map(function (arg) { + return trim(arg.replace(FN_ARG, '')); + }); + return func; + } + + /** + * A dependency-injected version of the [async.auto]{@link module:ControlFlow.auto} function. Dependent + * tasks are specified as parameters to the function, after the usual callback + * parameter, with the parameter names matching the names of the tasks it + * depends on. This can provide even more readable task graphs which can be + * easier to maintain. + * + * If a final callback is specified, the task results are similarly injected, + * specified as named parameters after the initial error parameter. + * + * The autoInject function is purely syntactic sugar and its semantics are + * otherwise equivalent to [async.auto]{@link module:ControlFlow.auto}. + * + * @name autoInject + * @static + * @memberOf module:ControlFlow + * @method + * @see [async.auto]{@link module:ControlFlow.auto} + * @category Control Flow + * @param {Object} tasks - An object, each of whose properties is a function of + * the form 'func([dependencies...], callback). The object's key of a property + * serves as the name of the task defined by that property, i.e. can be used + * when specifying requirements for other tasks. + * * The `callback` parameter is a `callback(err, result)` which must be called + * when finished, passing an `error` (which can be `null`) and the result of + * the function's execution. The remaining parameters name other tasks on + * which the task is dependent, and the results from those tasks are the + * arguments of those parameters. + * @param {Function} [callback] - An optional callback which is called when all + * the tasks have been completed. It receives the `err` argument if any `tasks` + * pass an error to their callback, and a `results` object with any completed + * task results, similar to `auto`. + * @example + * + * // The example from `auto` can be rewritten as follows: + * async.autoInject({ + * get_data: function(callback) { + * // async code to get some data + * callback(null, 'data', 'converted to array'); + * }, + * make_folder: function(callback) { + * // async code to create a directory to store a file in + * // this is run at the same time as getting the data + * callback(null, 'folder'); + * }, + * write_file: function(get_data, make_folder, callback) { + * // once there is some data and the directory exists, + * // write the data to a file in the directory + * callback(null, 'filename'); + * }, + * email_link: function(write_file, callback) { + * // once the file is written let's email a link to it... + * // write_file contains the filename returned by write_file. + * callback(null, {'file':write_file, 'email':'user@example.com'}); + * } + * }, function(err, results) { + * console.log('err = ', err); + * console.log('email_link = ', results.email_link); + * }); + * + * // If you are using a JS minifier that mangles parameter names, `autoInject` + * // will not work with plain functions, since the parameter names will be + * // collapsed to a single letter identifier. To work around this, you can + * // explicitly specify the names of the parameters your task function needs + * // in an array, similar to Angular.js dependency injection. + * + * // This still has an advantage over plain `auto`, since the results a task + * // depends on are still spread into arguments. + * async.autoInject({ + * //... + * write_file: ['get_data', 'make_folder', function(get_data, make_folder, callback) { + * callback(null, 'filename'); + * }], + * email_link: ['write_file', function(write_file, callback) { + * callback(null, {'file':write_file, 'email':'user@example.com'}); + * }] + * //... + * }, function(err, results) { + * console.log('err = ', err); + * console.log('email_link = ', results.email_link); + * }); + */ + function autoInject(tasks, callback) { + var newTasks = {}; + + baseForOwn(tasks, function (taskFn, key) { + var params; + + if (isArray(taskFn)) { + params = copyArray(taskFn); + taskFn = params.pop(); + + newTasks[key] = params.concat(params.length > 0 ? newTask : taskFn); + } else if (taskFn.length === 1) { + // no dependencies, use the function as-is + newTasks[key] = taskFn; + } else { + params = parseParams(taskFn); + if (taskFn.length === 0 && params.length === 0) { + throw new Error("autoInject task functions require explicit parameters."); + } + + 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); + } + + var hasSetImmediate = typeof setImmediate === 'function' && setImmediate; + var hasNextTick = typeof process === 'object' && typeof process.nextTick === 'function'; + + function fallback(fn) { + setTimeout(fn, 0); + } + + function wrap(defer) { + return rest(function (fn, args) { + defer(function () { + fn.apply(null, args); + }); + }); + } + + var _defer; + + if (hasSetImmediate) { + _defer = setImmediate; + } else if (hasNextTick) { + _defer = process.nextTick; + } else { + _defer = fallback; + } + + var setImmediate$1 = wrap(_defer); + + // Simple doubly linked list (https://en.wikipedia.org/wiki/Doubly_linked_list) implementation + // used for queues. This implementation assumes that the node provided by the user can be modified + // to adjust the next and last properties. We implement only the minimal functionality + // for queue support. + function DLL() { + this.head = this.tail = null; + this.length = 0; + } + + function setInitial(dll, node) { + dll.length = 1; + dll.head = dll.tail = node; + } + + DLL.prototype.removeLink = function (node) { + if (node.prev) node.prev.next = node.next;else this.head = node.next; + if (node.next) node.next.prev = node.prev;else this.tail = node.prev; + + node.prev = node.next = null; + this.length -= 1; + return node; + }; + + DLL.prototype.empty = DLL; + + DLL.prototype.insertAfter = function (node, newNode) { + newNode.prev = node; + newNode.next = node.next; + if (node.next) node.next.prev = newNode;else this.tail = newNode; + node.next = newNode; + this.length += 1; + }; + + DLL.prototype.insertBefore = function (node, newNode) { + newNode.prev = node.prev; + newNode.next = node; + if (node.prev) node.prev.next = newNode;else this.head = newNode; + node.prev = newNode; + this.length += 1; + }; + + DLL.prototype.unshift = function (node) { + if (this.head) this.insertBefore(this.head, node);else setInitial(this, node); + }; + + DLL.prototype.push = function (node) { + if (this.tail) this.insertAfter(this.tail, node);else setInitial(this, node); + }; + + DLL.prototype.shift = function () { + return this.head && this.removeLink(this.head); + }; + + DLL.prototype.pop = function () { + return this.tail && this.removeLink(this.tail); + }; + + function queue(worker, concurrency, payload) { + if (concurrency == null) { + concurrency = 1; + } else if (concurrency === 0) { + throw new Error('Concurrency must not be zero'); + } + + function _insert(data, insertAtFront, 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 (insertAtFront) { + q._tasks.unshift(item); + } else { + q._tasks.push(item); + } + }); + setImmediate$1(q.process); + } + + function _next(tasks) { + return rest(function (args) { + workers -= 1; + + arrayEach(tasks, function (task) { + arrayEach(workersList, function (worker, index) { + if (worker === task) { + workersList.splice(index, 1); + return false; + } + }); + + task.callback.apply(task, args); + + if (args[0] != null) { + q.error(args[0], task.data); + } + }); + + if (workers <= q.concurrency - q.buffer) { + q.unsaturated(); + } + + if (q.idle()) { + q.drain(); + } + q.process(); + }); + } + + var workers = 0; + var workersList = []; + var q = { + _tasks: new DLL(), + concurrency: concurrency, + payload: payload, + saturated: noop, + unsaturated: noop, + buffer: concurrency / 4, + empty: noop, + drain: noop, + error: noop, + started: false, + paused: false, + push: function (data, callback) { + _insert(data, false, callback); + }, + kill: function () { + q.drain = noop; + q._tasks.empty(); + }, + unshift: function (data, callback) { + _insert(data, true, callback); + }, + process: function () { + while (!q.paused && workers < q.concurrency && q._tasks.length) { + var tasks = [], + data = []; + var l = q._tasks.length; + if (q.payload) l = Math.min(l, q.payload); + for (var i = 0; i < l; i++) { + var node = q._tasks.shift(); + tasks.push(node); + data.push(node.data); + } + + if (q._tasks.length === 0) { + q.empty(); + } + workers += 1; + workersList.push(tasks[0]); + + if (workers === q.concurrency) { + q.saturated(); + } + + var cb = onlyOnce(_next(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; + } + + /** + * A cargo of tasks for the worker function to complete. Cargo inherits all of + * the same methods and event callbacks as [`queue`]{@link module:ControlFlow.queue}. + * @typedef {Object} CargoObject + * @memberOf module:ControlFlow + * @property {Function} length - A function returning the number of items + * waiting to be processed. Invoke like `cargo.length()`. + * @property {number} payload - An `integer` for determining how many tasks + * should be process per round. This property can be changed after a `cargo` is + * created to alter the payload on-the-fly. + * @property {Function} push - Adds `task` to the `queue`. The callback is + * called once the `worker` has finished processing the task. Instead of a + * single task, an array of `tasks` can be submitted. The respective callback is + * used for every task in the list. Invoke like `cargo.push(task, [callback])`. + * @property {Function} saturated - A callback that is called when the + * `queue.length()` hits the concurrency and further tasks will be queued. + * @property {Function} empty - A callback that is called when the last item + * from the `queue` is given to a `worker`. + * @property {Function} drain - A callback that is called when the last item + * from the `queue` has returned from the `worker`. + * @property {Function} idle - a function returning false if there are items + * waiting or being processed, or true if not. Invoke like `cargo.idle()`. + * @property {Function} pause - a function that pauses the processing of tasks + * until `resume()` is called. Invoke like `cargo.pause()`. + * @property {Function} resume - a function that resumes the processing of + * queued tasks when the queue is paused. Invoke like `cargo.resume()`. + * @property {Function} kill - a function that removes the `drain` callback and + * empties remaining tasks from the queue forcing it to go idle. Invoke like `cargo.kill()`. + */ + + /** + * Creates a `cargo` object with the specified payload. Tasks added to the + * cargo will be processed altogether (up to the `payload` limit). If the + * `worker` is in progress, the task is queued until it becomes available. Once + * the `worker` has completed some tasks, each callback of those tasks is + * called. Check out [these](https://camo.githubusercontent.com/6bbd36f4cf5b35a0f11a96dcd2e97711ffc2fb37/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313637363837312f36383130382f62626330636662302d356632392d313165322d393734662d3333393763363464633835382e676966) [animations](https://camo.githubusercontent.com/f4810e00e1c5f5f8addbe3e9f49064fd5d102699/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313637363837312f36383130312f38346339323036362d356632392d313165322d383134662d3964336430323431336266642e676966) + * for how `cargo` and `queue` work. + * + * While [`queue`]{@link module:ControlFlow.queue} passes only one task to one of a group of workers + * at a time, cargo passes an array of tasks to a single worker, repeating + * when the worker is finished. + * + * @name cargo + * @static + * @memberOf module:ControlFlow + * @method + * @see [async.queue]{@link module:ControlFlow.queue} + * @category Control Flow + * @param {Function} worker - An asynchronous function for processing an array + * of queued tasks, which must call its `callback(err)` argument when finished, + * with an optional `err` argument. Invoked with `(tasks, callback)`. + * @param {number} [payload=Infinity] - An optional `integer` for determining + * how many tasks should be processed per round; if omitted, the default is + * unlimited. + * @returns {module:ControlFlow.CargoObject} A cargo object to manage the tasks. Callbacks can + * attached as certain properties to listen for specific events during the + * lifecycle of the cargo and inner queue. + * @example + * + * // create a cargo object with payload 2 + * var cargo = async.cargo(function(tasks, callback) { + * for (var i=0; i<tasks.length; i++) { + * console.log('hello ' + tasks[i].name); + * } + * callback(); + * }, 2); + * + * // add some items + * cargo.push({name: 'foo'}, function(err) { + * console.log('finished processing foo'); + * }); + * cargo.push({name: 'bar'}, function(err) { + * console.log('finished processing bar'); + * }); + * cargo.push({name: 'baz'}, function(err) { + * console.log('finished processing baz'); + * }); + */ + function cargo(worker, payload) { + return queue(worker, 1, payload); + } + + /** + * The same as [`eachOf`]{@link module:Collections.eachOf} but runs only a single async operation at a time. + * + * @name eachOfSeries + * @static + * @memberOf module:Collections + * @method + * @see [async.eachOf]{@link module:Collections.eachOf} + * @alias forEachOfSeries + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A function to apply to each item in `coll`. The + * `key` is the item's key, or index in the case of an array. The iteratee is + * passed a `callback(err)` which must be called once it has completed. If no + * error has occurred, the callback should be run without arguments or with an + * explicit `null` argument. Invoked with (item, key, callback). + * @param {Function} [callback] - A callback which is called when all `iteratee` + * functions have finished, or an error occurs. Invoked with (err). + */ + var eachOfSeries = doLimit(eachOfLimit, 1); + + /** + * Reduces `coll` into a single value using an async `iteratee` to return each + * successive step. `memo` is the initial state of the reduction. This function + * only operates in series. + * + * For performance reasons, it may make sense to split a call to this function + * into a parallel map, and then use the normal `Array.prototype.reduce` on the + * results. This function is for situations where each step in the reduction + * needs to be async; if you can get the data before reducing it, then it's + * probably a good idea to do so. + * + * @name reduce + * @static + * @memberOf module:Collections + * @method + * @alias inject + * @alias foldl + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {*} memo - The initial state of the reduction. + * @param {Function} iteratee - A function applied to each item in the + * array to produce the next step in the reduction. The `iteratee` is passed a + * `callback(err, reduction)` which accepts an optional error as its first + * argument, and the state of the reduction as the second. If an error is + * passed to the callback, the reduction is stopped and the main `callback` is + * immediately called with the error. Invoked with (memo, item, callback). + * @param {Function} [callback] - A callback which is called after all the + * `iteratee` functions have finished. Result is the reduced value. Invoked with + * (err, result). + * @example + * + * async.reduce([1,2,3], 0, function(memo, item, callback) { + * // pointless async: + * process.nextTick(function() { + * callback(null, memo + item) + * }); + * }, function(err, result) { + * // result is now equal to the last value of memo, which is 6 + * }); + */ + function reduce(coll, memo, iteratee, callback) { + callback = once(callback || noop); + eachOfSeries(coll, function (x, i, callback) { + iteratee(memo, x, function (err, v) { + memo = v; + callback(err); + }); + }, function (err) { + callback(err, memo); + }); + } + + /** + * Version of the compose function that is more natural to read. Each function + * consumes the return value of the previous function. It is the equivalent of + * [compose]{@link module:ControlFlow.compose} with the arguments reversed. + * + * Each function is executed with the `this` binding of the composed function. + * + * @name seq + * @static + * @memberOf module:ControlFlow + * @method + * @see [async.compose]{@link module:ControlFlow.compose} + * @category Control Flow + * @param {...Function} functions - the asynchronous functions to compose + * @returns {Function} a function that composes the `functions` in order + * @example + * + * // Requires lodash (or underscore), express3 and dresende's orm2. + * // Part of an app, that fetches cats of the logged user. + * // This example uses `seq` function to avoid overnesting and error + * // handling clutter. + * app.get('/cats', function(request, response) { + * var User = request.models.User; + * async.seq( + * _.bind(User.get, User), // 'User.get' has signature (id, callback(err, data)) + * function(user, fn) { + * user.getCats(fn); // 'getCats' has signature (callback(err, data)) + * } + * )(req.session.user_id, function (err, cats) { + * if (err) { + * console.error(err); + * response.json({ status: 'error', message: err.message }); + * } else { + * response.json({ status: 'ok', message: 'Cats found', data: cats }); + * } + * }); + * }); + */ + var seq = rest(function seq(functions) { + return rest(function (args) { + var that = this; + + var cb = args[args.length - 1]; + if (typeof cb == 'function') { + args.pop(); + } else { + cb = noop; + } + + reduce(functions, 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)); + }); + }); + }); + + /** + * Creates a function which is a composition of the passed asynchronous + * functions. Each function consumes the return value of the function that + * follows. Composing functions `f()`, `g()`, and `h()` would produce the result + * of `f(g(h()))`, only this version uses callbacks to obtain the return values. + * + * Each function is executed with the `this` binding of the composed function. + * + * @name compose + * @static + * @memberOf module:ControlFlow + * @method + * @category Control Flow + * @param {...Function} functions - the asynchronous functions to compose + * @returns {Function} an asynchronous function that is the composed + * asynchronous `functions` + * @example + * + * function add1(n, callback) { + * setTimeout(function () { + * callback(null, n + 1); + * }, 10); + * } + * + * function mul3(n, callback) { + * setTimeout(function () { + * callback(null, n * 3); + * }, 10); + * } + * + * var add1mul3 = async.compose(mul3, add1); + * add1mul3(4, function (err, result) { + * // result now equals 15 + * }); + */ + var compose = rest(function (args) { + return seq.apply(null, args.reverse()); + }); + + 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); + }); + } + + /** + * Applies `iteratee` to each item in `coll`, concatenating the results. Returns + * the concatenated list. The `iteratee`s are called in parallel, and the + * results are concatenated as they return. There is no guarantee that the + * results array will be returned in the original order of `coll` passed to the + * `iteratee` function. + * + * @name concat + * @static + * @memberOf module:Collections + * @method + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A function to apply to each item in `coll`. + * The iteratee is passed a `callback(err, results)` which must be called once + * it has completed with an error (which can be `null`) and an array of results. + * Invoked with (item, callback). + * @param {Function} [callback(err)] - A callback which is called after all the + * `iteratee` functions have finished, or an error occurs. Results is an array + * containing the concatenated results of the `iteratee` function. Invoked with + * (err, results). + * @example + * + * async.concat(['dir1','dir2','dir3'], fs.readdir, function(err, files) { + * // files is now a list of filenames that exist in the 3 directories + * }); + */ + var concat = doParallel(concat$1); + + function doSeries(fn) { + return function (obj, iteratee, callback) { + return fn(eachOfSeries, obj, iteratee, callback); + }; + } + + /** + * The same as [`concat`]{@link module:Collections.concat} but runs only a single async operation at a time. + * + * @name concatSeries + * @static + * @memberOf module:Collections + * @method + * @see [async.concat]{@link module:Collections.concat} + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A function to apply to each item in `coll`. + * The iteratee is passed a `callback(err, results)` which must be called once + * it has completed with an error (which can be `null`) and an array of results. + * Invoked with (item, callback). + * @param {Function} [callback(err)] - A callback which is called after all the + * `iteratee` functions have finished, or an error occurs. Results is an array + * containing the concatenated results of the `iteratee` function. Invoked with + * (err, results). + */ + var concatSeries = doSeries(concat$1); + + /** + * Returns a function that when called, calls-back with the values provided. + * Useful as the first function in a [`waterfall`]{@link module:ControlFlow.waterfall}, or for plugging values in to + * [`auto`]{@link module:ControlFlow.auto}. + * + * @name constant + * @static + * @memberOf module:Utils + * @method + * @category Util + * @param {...*} arguments... - Any number of arguments to automatically invoke + * callback with. + * @returns {Function} Returns a function that when invoked, automatically + * invokes the callback with the previous given arguments. + * @example + * + * async.waterfall([ + * async.constant(42), + * function (value, next) { + * // value === 42 + * }, + * //... + * ], callback); + * + * async.waterfall([ + * async.constant(filename, "utf8"), + * fs.readFile, + * function (fileData, next) { + * //... + * } + * //... + * ], callback); + * + * async.auto({ + * hostname: async.constant("https://server.net/"), + * port: findFreePort, + * launchServer: ["hostname", "port", function (options, cb) { + * startServer(options, cb); + * }], + * //... + * }, callback); + */ + var constant = rest(function (values) { + var args = [null].concat(values); + return initialParams(function (ignoredArgs, callback) { + return callback.apply(this, args); + }); + }); + + /** + * This method returns the first argument given to it. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Util + * @param {*} value Any value. + * @returns {*} Returns `value`. + * @example + * + * var object = { 'user': 'fred' }; + * + * console.log(_.identity(object) === object); + * // => true + */ + function identity(value) { + return value; + } + + function _createTester(eachfn, check, getResult) { + return function (arr, limit, iteratee, cb) { + function done(err) { + if (cb) { + if (err) { + cb(err); + } else { + cb(null, getResult(false)); + } + } + } + function wrappedIteratee(x, _, callback) { + if (!cb) return callback(); + iteratee(x, function (err, v) { + if (cb) { + if (err) { + cb(err); + cb = iteratee = false; + } else if (check(v)) { + cb(null, getResult(true, x)); + cb = iteratee = false; + } + } + callback(); + }); + } + if (arguments.length > 3) { + cb = cb || noop; + eachfn(arr, limit, wrappedIteratee, done); + } else { + cb = iteratee; + cb = cb || noop; + iteratee = limit; + eachfn(arr, wrappedIteratee, done); + } + }; + } + + function _findGetResult(v, x) { + return x; + } + + /** + * Returns the first value in `coll` that passes an async truth test. The + * `iteratee` is applied in parallel, meaning the first iteratee to return + * `true` will fire the detect `callback` with that result. That means the + * result might not be the first item in the original `coll` (in terms of order) + * that passes the test. + + * If order within the original `coll` is important, then look at + * [`detectSeries`]{@link module:Collections.detectSeries}. + * + * @name detect + * @static + * @memberOf module:Collections + * @method + * @alias find + * @category Collections + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A truth test to apply to each item in `coll`. + * The iteratee is passed a `callback(err, truthValue)` which must be called + * with a boolean argument once it has completed. Invoked with (item, callback). + * @param {Function} [callback] - A callback which is called as soon as any + * iteratee returns `true`, or after all the `iteratee` functions have finished. + * Result will be the first item in the array that passes the truth test + * (iteratee) or the value `undefined` if none passed. Invoked with + * (err, result). + * @example + * + * async.detect(['file1','file2','file3'], function(filePath, callback) { + * fs.access(filePath, function(err) { + * callback(null, !err) + * }); + * }, function(err, result) { + * // result now equals the first file in the list that exists + * }); + */ + var detect = _createTester(eachOf, identity, _findGetResult); + + /** + * The same as [`detect`]{@link module:Collections.detect} but runs a maximum of `limit` async operations at a + * time. + * + * @name detectLimit + * @static + * @memberOf module:Collections + * @method + * @see [async.detect]{@link module:Collections.detect} + * @alias findLimit + * @category Collections + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {number} limit - The maximum number of async operations at a time. + * @param {Function} iteratee - A truth test to apply to each item in `coll`. + * The iteratee is passed a `callback(err, truthValue)` which must be called + * with a boolean argument once it has completed. Invoked with (item, callback). + * @param {Function} [callback] - A callback which is called as soon as any + * iteratee returns `true`, or after all the `iteratee` functions have finished. + * Result will be the first item in the array that passes the truth test + * (iteratee) or the value `undefined` if none passed. Invoked with + * (err, result). + */ + var detectLimit = _createTester(eachOfLimit, identity, _findGetResult); + + /** + * The same as [`detect`]{@link module:Collections.detect} but runs only a single async operation at a time. + * + * @name detectSeries + * @static + * @memberOf module:Collections + * @method + * @see [async.detect]{@link module:Collections.detect} + * @alias findSeries + * @category Collections + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A truth test to apply to each item in `coll`. + * The iteratee is passed a `callback(err, truthValue)` which must be called + * with a boolean argument once it has completed. Invoked with (item, callback). + * @param {Function} [callback] - A callback which is called as soon as any + * iteratee returns `true`, or after all the `iteratee` functions have finished. + * Result will be the first item in the array that passes the truth test + * (iteratee) or the value `undefined` if none passed. Invoked with + * (err, result). + */ + 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); + }); + } + } + })])); + }); + } + + /** + * Logs the result of an `async` function to the `console` using `console.dir` + * to display the properties of the resulting object. Only works in Node.js or + * in browsers that support `console.dir` and `console.error` (such as FF and + * Chrome). If multiple arguments are returned from the async function, + * `console.dir` is called on each argument in order. + * + * @name dir + * @static + * @memberOf module:Utils + * @method + * @category Util + * @param {Function} function - The function you want to eventually apply all + * arguments to. + * @param {...*} arguments... - Any number of arguments to apply to the function. + * @example + * + * // in a module + * var hello = function(name, callback) { + * setTimeout(function() { + * callback(null, {hello: name}); + * }, 1000); + * }; + * + * // in the node repl + * node> async.dir(hello, 'world'); + * {hello: 'world'} + */ + var dir = consoleFunc('dir'); + + /** + * The post-check version of [`during`]{@link module:ControlFlow.during}. To reflect the difference in + * the order of operations, the arguments `test` and `fn` are switched. + * + * Also a version of [`doWhilst`]{@link module:ControlFlow.doWhilst} with asynchronous `test` function. + * @name doDuring + * @static + * @memberOf module:ControlFlow + * @method + * @see [async.during]{@link module:ControlFlow.during} + * @category Control Flow + * @param {Function} fn - A function which is called each time `test` passes. + * The function is passed a `callback(err)`, which must be called once it has + * completed with an optional `err` argument. Invoked with (callback). + * @param {Function} test - asynchronous truth test to perform before each + * execution of `fn`. Invoked with (...args, callback), where `...args` are the + * non-error args from the previous callback of `fn`. + * @param {Function} [callback] - A callback which is called after the test + * function has failed and repeated execution of `fn` has stopped. `callback` + * will be passed an error if one occured, otherwise `null`. + */ + function doDuring(fn, test, callback) { + callback = onlyOnce(callback || noop); + + var next = rest(function (err, args) { + if (err) return callback(err); + args.push(check); + test.apply(this, args); + }); + + function check(err, truth) { + if (err) return callback(err); + if (!truth) return callback(null); + fn(next); + } + + check(null, true); + } + + /** + * The post-check version of [`whilst`]{@link module:ControlFlow.whilst}. To reflect the difference in + * the order of operations, the arguments `test` and `iteratee` are switched. + * + * `doWhilst` is to `whilst` as `do while` is to `while` in plain JavaScript. + * + * @name doWhilst + * @static + * @memberOf module:ControlFlow + * @method + * @see [async.whilst]{@link module:ControlFlow.whilst} + * @category Control Flow + * @param {Function} iteratee - A function which is called each time `test` + * passes. The function is passed a `callback(err)`, which must be called once + * it has completed with an optional `err` argument. Invoked with (callback). + * @param {Function} test - synchronous truth test to perform after each + * execution of `iteratee`. Invoked with Invoked with the non-error callback + * results of `iteratee`. + * @param {Function} [callback] - A callback which is called after the test + * function has failed and repeated execution of `iteratee` has stopped. + * `callback` will be passed an error and any arguments passed to the final + * `iteratee`'s callback. Invoked with (err, [results]); + */ + function doWhilst(iteratee, test, callback) { + callback = onlyOnce(callback || noop); + var next = rest(function (err, args) { + if (err) return callback(err); + if (test.apply(this, args)) return iteratee(next); + callback.apply(null, [null].concat(args)); + }); + iteratee(next); + } + + /** + * Like ['doWhilst']{@link module:ControlFlow.doWhilst}, except the `test` is inverted. Note the + * argument ordering differs from `until`. + * + * @name doUntil + * @static + * @memberOf module:ControlFlow + * @method + * @see [async.doWhilst]{@link module:ControlFlow.doWhilst} + * @category Control Flow + * @param {Function} fn - A function which is called each time `test` fails. + * The function is passed a `callback(err)`, which must be called once it has + * completed with an optional `err` argument. Invoked with (callback). + * @param {Function} test - synchronous truth test to perform after each + * execution of `fn`. Invoked with the non-error callback results of `fn`. + * @param {Function} [callback] - A callback which is called after the test + * function has passed and repeated execution of `fn` has stopped. `callback` + * will be passed an error and any arguments passed to the final `fn`'s + * callback. Invoked with (err, [results]); + */ + function doUntil(fn, test, callback) { + doWhilst(fn, function () { + return !test.apply(this, arguments); + }, callback); + } + + /** + * Like [`whilst`]{@link module:ControlFlow.whilst}, except the `test` is an asynchronous function that + * is passed a callback in the form of `function (err, truth)`. If error is + * passed to `test` or `fn`, the main callback is immediately called with the + * value of the error. + * + * @name during + * @static + * @memberOf module:ControlFlow + * @method + * @see [async.whilst]{@link module:ControlFlow.whilst} + * @category Control Flow + * @param {Function} test - asynchronous truth test to perform before each + * execution of `fn`. Invoked with (callback). + * @param {Function} fn - A function which is called each time `test` passes. + * The function is passed a `callback(err)`, which must be called once it has + * completed with an optional `err` argument. Invoked with (callback). + * @param {Function} [callback] - A callback which is called after the test + * function has failed and repeated execution of `fn` has stopped. `callback` + * will be passed an error, if one occured, otherwise `null`. + * @example + * + * var count = 0; + * + * async.during( + * function (callback) { + * return callback(null, count < 5); + * }, + * function (callback) { + * count++; + * setTimeout(callback, 1000); + * }, + * function (err) { + * // 5 seconds have passed + * } + * ); + */ + function during(test, fn, callback) { + callback = onlyOnce(callback || noop); + + function next(err) { + if (err) return callback(err); + test(check); + } + + function check(err, truth) { + if (err) return callback(err); + if (!truth) return callback(null); + fn(next); + } + + test(check); + } + + function _withoutIndex(iteratee) { + return function (value, index, callback) { + return iteratee(value, callback); + }; + } + + /** + * Applies the function `iteratee` to each item in `coll`, in parallel. + * The `iteratee` is called with an item from the list, and a callback for when + * it has finished. If the `iteratee` passes an error to its `callback`, the + * main `callback` (for the `each` function) is immediately called with the + * error. + * + * Note, that since this function applies `iteratee` to each item in parallel, + * there is no guarantee that the iteratee functions will complete in order. + * + * @name each + * @static + * @memberOf module:Collections + * @method + * @alias forEach + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A function to apply to each item + * in `coll`. The iteratee is passed a `callback(err)` which must be called once + * it has completed. If no error has occurred, the `callback` should be run + * without arguments or with an explicit `null` argument. The array index is not + * passed to the iteratee. Invoked with (item, callback). If you need the index, + * use `eachOf`. + * @param {Function} [callback] - A callback which is called when all + * `iteratee` functions have finished, or an error occurs. Invoked with (err). + * @example + * + * // assuming openFiles is an array of file names and saveFile is a function + * // to save the modified contents of that file: + * + * async.each(openFiles, saveFile, function(err){ + * // if any of the saves produced an error, err would equal that error + * }); + * + * // assuming openFiles is an array of file names + * async.each(openFiles, function(file, callback) { + * + * // Perform operation on file here. + * console.log('Processing file ' + file); + * + * if( file.length > 32 ) { + * console.log('This file name is too long'); + * callback('File name too long'); + * } else { + * // Do work to process file here + * console.log('File processed'); + * callback(); + * } + * }, function(err) { + * // if any of the file processing produced an error, err would equal that error + * if( err ) { + * // One of the iterations produced an error. + * // All processing will now stop. + * console.log('A file failed to process'); + * } else { + * console.log('All files have been processed successfully'); + * } + * }); + */ + function eachLimit(coll, iteratee, callback) { + eachOf(coll, _withoutIndex(iteratee), callback); + } + + /** + * The same as [`each`]{@link module:Collections.each} but runs a maximum of `limit` async operations at a time. + * + * @name eachLimit + * @static + * @memberOf module:Collections + * @method + * @see [async.each]{@link module:Collections.each} + * @alias forEachLimit + * @category Collection + * @param {Array|Iterable|Object} coll - A colleciton to iterate over. + * @param {number} limit - The maximum number of async operations at a time. + * @param {Function} iteratee - A function to apply to each item in `coll`. The + * iteratee is passed a `callback(err)` which must be called once it has + * completed. If no error has occurred, the `callback` should be run without + * arguments or with an explicit `null` argument. The array index is not passed + * to the iteratee. Invoked with (item, callback). If you need the index, use + * `eachOfLimit`. + * @param {Function} [callback] - A callback which is called when all + * `iteratee` functions have finished, or an error occurs. Invoked with (err). + */ + function eachLimit$1(coll, limit, iteratee, callback) { + _eachOfLimit(limit)(coll, _withoutIndex(iteratee), callback); + } + + /** + * The same as [`each`]{@link module:Collections.each} but runs only a single async operation at a time. + * + * @name eachSeries + * @static + * @memberOf module:Collections + * @method + * @see [async.each]{@link module:Collections.each} + * @alias forEachSeries + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A function to apply to each + * item in `coll`. The iteratee is passed a `callback(err)` which must be called + * once it has completed. If no error has occurred, the `callback` should be run + * without arguments or with an explicit `null` argument. The array index is + * not passed to the iteratee. Invoked with (item, callback). If you need the + * index, use `eachOfSeries`. + * @param {Function} [callback] - A callback which is called when all + * `iteratee` functions have finished, or an error occurs. Invoked with (err). + */ + var eachSeries = doLimit(eachLimit$1, 1); + + /** + * Wrap an async function and ensure it calls its callback on a later tick of + * the event loop. If the function already calls its callback on a next tick, + * no extra deferral is added. This is useful for preventing stack overflows + * (`RangeError: Maximum call stack size exceeded`) and generally keeping + * [Zalgo](http://blog.izs.me/post/59142742143/designing-apis-for-asynchrony) + * contained. + * + * @name ensureAsync + * @static + * @memberOf module:Utils + * @method + * @category Util + * @param {Function} fn - an async function, one that expects a node-style + * callback as its last argument. + * @returns {Function} Returns a wrapped function with the exact same call + * signature as the function passed in. + * @example + * + * function sometimesAsync(arg, callback) { + * if (cache[arg]) { + * return callback(null, cache[arg]); // this would be synchronous!! + * } else { + * doSomeIO(arg, callback); // this IO would be asynchronous + * } + * } + * + * // this has a risk of stack overflows if many results are cached in a row + * async.mapSeries(args, sometimesAsync, done); + * + * // this will defer sometimesAsync's callback if necessary, + * // preventing stack overflows + * async.mapSeries(args, async.ensureAsync(sometimesAsync), done); + */ + function ensureAsync(fn) { + return initialParams(function (args, callback) { + 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; + } + + /** + * Returns `true` if every element in `coll` satisfies an async test. If any + * iteratee call returns `false`, the main `callback` is immediately called. + * + * @name every + * @static + * @memberOf module:Collections + * @method + * @alias all + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A truth test to apply to each item in the + * collection in parallel. The iteratee is passed a `callback(err, truthValue)` + * which must be called with a boolean argument once it has completed. Invoked + * with (item, callback). + * @param {Function} [callback] - A callback which is called after all the + * `iteratee` functions have finished. Result will be either `true` or `false` + * depending on the values of the async tests. Invoked with (err, result). + * @example + * + * async.every(['file1','file2','file3'], function(filePath, callback) { + * fs.access(filePath, function(err) { + * callback(null, !err) + * }); + * }, function(err, result) { + * // if result is true then every file exists + * }); + */ + var every = _createTester(eachOf, notId, notId); + + /** + * The same as [`every`]{@link module:Collections.every} but runs a maximum of `limit` async operations at a time. + * + * @name everyLimit + * @static + * @memberOf module:Collections + * @method + * @see [async.every]{@link module:Collections.every} + * @alias allLimit + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {number} limit - The maximum number of async operations at a time. + * @param {Function} iteratee - A truth test to apply to each item in the + * collection in parallel. The iteratee is passed a `callback(err, truthValue)` + * which must be called with a boolean argument once it has completed. Invoked + * with (item, callback). + * @param {Function} [callback] - A callback which is called after all the + * `iteratee` functions have finished. Result will be either `true` or `false` + * depending on the values of the async tests. Invoked with (err, result). + */ + var everyLimit = _createTester(eachOfLimit, notId, notId); + + /** + * The same as [`every`]{@link module:Collections.every} but runs only a single async operation at a time. + * + * @name everySeries + * @static + * @memberOf module:Collections + * @method + * @see [async.every]{@link module:Collections.every} + * @alias allSeries + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A truth test to apply to each item in the + * collection in parallel. The iteratee is passed a `callback(err, truthValue)` + * which must be called with a boolean argument once it has completed. Invoked + * with (item, callback). + * @param {Function} [callback] - A callback which is called after all the + * `iteratee` functions have finished. Result will be either `true` or `false` + * depending on the values of the async tests. Invoked with (err, result). + */ + var everySeries = doLimit(everyLimit, 1); + + function _filter(eachfn, arr, iteratee, callback) { + callback = once(callback || noop); + var results = []; + eachfn(arr, function (x, index, callback) { + iteratee(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'))); + } + }); + } + + /** + * Returns a new array of all the values in `coll` which pass an async truth + * test. This operation is performed in parallel, but the results array will be + * in the same order as the original. + * + * @name filter + * @static + * @memberOf module:Collections + * @method + * @alias select + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A truth test to apply to each item in `coll`. + * The `iteratee` is passed a `callback(err, truthValue)`, which must be called + * with a boolean argument once it has completed. Invoked with (item, callback). + * @param {Function} [callback] - A callback which is called after all the + * `iteratee` functions have finished. Invoked with (err, results). + * @example + * + * async.filter(['file1','file2','file3'], function(filePath, callback) { + * fs.access(filePath, function(err) { + * callback(null, !err) + * }); + * }, function(err, results) { + * // results now equals an array of the existing files + * }); + */ + var filter = doParallel(_filter); + + /** + * The same as [`filter`]{@link module:Collections.filter} but runs a maximum of `limit` async operations at a + * time. + * + * @name filterLimit + * @static + * @memberOf module:Collections + * @method + * @see [async.filter]{@link module:Collections.filter} + * @alias selectLimit + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {number} limit - The maximum number of async operations at a time. + * @param {Function} iteratee - A truth test to apply to each item in `coll`. + * The `iteratee` is passed a `callback(err, truthValue)`, which must be called + * with a boolean argument once it has completed. Invoked with (item, callback). + * @param {Function} [callback] - A callback which is called after all the + * `iteratee` functions have finished. Invoked with (err, results). + */ + var filterLimit = doParallelLimit(_filter); + + /** + * The same as [`filter`]{@link module:Collections.filter} but runs only a single async operation at a time. + * + * @name filterSeries + * @static + * @memberOf module:Collections + * @method + * @see [async.filter]{@link module:Collections.filter} + * @alias selectSeries + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A truth test to apply to each item in `coll`. + * The `iteratee` is passed a `callback(err, truthValue)`, which must be called + * with a boolean argument once it has completed. Invoked with (item, callback). + * @param {Function} [callback] - A callback which is called after all the + * `iteratee` functions have finished. Invoked with (err, results) + */ + var filterSeries = doLimit(filterLimit, 1); + + /** + * Calls the asynchronous function `fn` with a callback parameter that allows it + * to call itself again, in series, indefinitely. + + * If an error is passed to the + * callback then `errback` is called with the error, and execution stops, + * otherwise it will never be called. + * + * @name forever + * @static + * @memberOf module:ControlFlow + * @method + * @category Control Flow + * @param {Function} fn - a function to call repeatedly. Invoked with (next). + * @param {Function} [errback] - when `fn` passes an error to it's callback, + * this function will be called, and execution stops. Invoked with (err). + * @example + * + * async.forever( + * function(next) { + * // next is suitable for passing to things that need a callback(err [, whatever]); + * // it will result in this function being called again. + * }, + * function(err) { + * // if next is called with a value in its first parameter, it will appear + * // in here as 'err', and execution will stop. + * } + * ); + */ + function forever(fn, errback) { + var done = onlyOnce(errback || noop); + var task = ensureAsync(fn); + + function next(err) { + if (err) return done(err); + task(next); + } + next(); + } + + /** + * Logs the result of an `async` function to the `console`. Only works in + * Node.js or in browsers that support `console.log` and `console.error` (such + * as FF and Chrome). If multiple arguments are returned from the async + * function, `console.log` is called on each argument in order. + * + * @name log + * @static + * @memberOf module:Utils + * @method + * @category Util + * @param {Function} function - The function you want to eventually apply all + * arguments to. + * @param {...*} arguments... - Any number of arguments to apply to the function. + * @example + * + * // in a module + * var hello = function(name, callback) { + * setTimeout(function() { + * callback(null, 'hello ' + name); + * }, 1000); + * }; + * + * // in the node repl + * node> async.log(hello, 'world'); + * 'hello world' + */ + var log = consoleFunc('log'); + + /** + * The same as [`mapValues`]{@link module:Collections.mapValues} but runs a maximum of `limit` async operations at a + * time. + * + * @name mapValuesLimit + * @static + * @memberOf module:Collections + * @method + * @see [async.mapValues]{@link module:Collections.mapValues} + * @category Collection + * @param {Object} obj - A collection to iterate over. + * @param {number} limit - The maximum number of async operations at a time. + * @param {Function} iteratee - A function to apply to each value in `obj`. + * The iteratee is passed a `callback(err, transformed)` which must be called + * once it has completed with an error (which can be `null`) and a + * transformed value. Invoked with (value, key, callback). + * @param {Function} [callback] - A callback which is called when all `iteratee` + * functions have finished, or an error occurs. Result is an object of the + * transformed values from the `obj`. Invoked with (err, result). + */ + function mapValuesLimit(obj, limit, iteratee, callback) { + callback = once(callback || noop); + var newObj = {}; + eachOfLimit(obj, limit, function (val, key, next) { + iteratee(val, key, function (err, result) { + if (err) return next(err); + newObj[key] = result; + next(); + }); + }, function (err) { + callback(err, newObj); + }); + } + + /** + * A relative of [`map`]{@link module:Collections.map}, designed for use with objects. + * + * Produces a new Object by mapping each value of `obj` through the `iteratee` + * function. The `iteratee` is called each `value` and `key` from `obj` and a + * callback for when it has finished processing. Each of these callbacks takes + * two arguments: an `error`, and the transformed item from `obj`. If `iteratee` + * passes an error to its callback, the main `callback` (for the `mapValues` + * function) is immediately called with the error. + * + * Note, the order of the keys in the result is not guaranteed. The keys will + * be roughly in the order they complete, (but this is very engine-specific) + * + * @name mapValues + * @static + * @memberOf module:Collections + * @method + * @category Collection + * @param {Object} obj - A collection to iterate over. + * @param {Function} iteratee - A function to apply to each value and key in + * `coll`. The iteratee is passed a `callback(err, transformed)` which must be + * called once it has completed with an error (which can be `null`) and a + * transformed value. Invoked with (value, key, callback). + * @param {Function} [callback] - A callback which is called when all `iteratee` + * functions have finished, or an error occurs. Results is an array of the + * transformed items from the `obj`. Invoked with (err, result). + * @example + * + * async.mapValues({ + * f1: 'file1', + * f2: 'file2', + * f3: 'file3' + * }, function (file, key, callback) { + * fs.stat(file, callback); + * }, function(err, result) { + * // results is now a map of stats for each file, e.g. + * // { + * // f1: [stats for file1], + * // f2: [stats for file2], + * // f3: [stats for file3] + * // } + * }); + */ + + var mapValues = doLimit(mapValuesLimit, Infinity); + + /** + * The same as [`mapValues`]{@link module:Collections.mapValues} but runs only a single async operation at a time. + * + * @name mapValuesSeries + * @static + * @memberOf module:Collections + * @method + * @see [async.mapValues]{@link module:Collections.mapValues} + * @category Collection + * @param {Object} obj - A collection to iterate over. + * @param {Function} iteratee - A function to apply to each value in `obj`. + * The iteratee is passed a `callback(err, transformed)` which must be called + * once it has completed with an error (which can be `null`) and a + * transformed value. Invoked with (value, key, callback). + * @param {Function} [callback] - A callback which is called when all `iteratee` + * functions have finished, or an error occurs. Result is an object of the + * transformed values from the `obj`. Invoked with (err, result). + */ + var mapValuesSeries = doLimit(mapValuesLimit, 1); + + function has(obj, key) { + return key in obj; + } + + /** + * Caches the results of an `async` function. When creating a hash to store + * function results against, the callback is omitted from the hash and an + * optional hash function can be used. + * + * If no hash function is specified, the first argument is used as a hash key, + * which may work reasonably if it is a string or a data type that converts to a + * distinct string. Note that objects and arrays will not behave reasonably. + * Neither will cases where the other arguments are significant. In such cases, + * specify your own hash function. + * + * The cache of results is exposed as the `memo` property of the function + * returned by `memoize`. + * + * @name memoize + * @static + * @memberOf module:Utils + * @method + * @category Util + * @param {Function} fn - The function to proxy and cache results from. + * @param {Function} hasher - An optional function for generating a custom hash + * for storing results. It has all the arguments applied to it apart from the + * callback, and must be synchronous. + * @returns {Function} a memoized version of `fn` + * @example + * + * var slow_fn = function(name, callback) { + * // do something + * callback(null, result); + * }; + * var fn = async.memoize(slow_fn); + * + * // fn can now be used as if it were slow_fn + * fn('some name', function() { + * // callback + * }); + */ + function memoize(fn, hasher) { + var memo = Object.create(null); + var queues = Object.create(null); + hasher = hasher || identity; + var memoized = initialParams(function memoized(args, callback) { + 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; + } + + /** + * Calls `callback` on a later loop around the event loop. In Node.js this just + * calls `setImmediate`. In the browser it will use `setImmediate` if + * available, otherwise `setTimeout(callback, 0)`, which means other higher + * priority events may precede the execution of `callback`. + * + * This is used internally for browser-compatibility purposes. + * + * @name nextTick + * @static + * @memberOf module:Utils + * @method + * @alias setImmediate + * @category Util + * @param {Function} callback - The function to call on a later loop around + * the event loop. Invoked with (args...). + * @param {...*} args... - any number of additional arguments to pass to the + * callback on the next tick. + * @example + * + * var call_order = []; + * async.nextTick(function() { + * call_order.push('two'); + * // call_order now equals ['one','two'] + * }); + * call_order.push('one'); + * + * async.setImmediate(function (a, b, c) { + * // a, b, and c equal 1, 2, and 3 + * }, 1, 2, 3); + */ + var _defer$1; + + if (hasNextTick) { + _defer$1 = process.nextTick; + } else if (hasSetImmediate) { + _defer$1 = setImmediate; + } else { + _defer$1 = fallback; + } + + var nextTick = wrap(_defer$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); + }); + } + + /** + * Run the `tasks` collection of functions in parallel, without waiting until + * the previous function has completed. If any of the functions pass an error to + * its callback, the main `callback` is immediately called with the value of the + * error. Once the `tasks` have completed, the results are passed to the final + * `callback` as an array. + * + * **Note:** `parallel` is about kicking-off I/O tasks in parallel, not about + * parallel execution of code. If your tasks do not use any timers or perform + * any I/O, they will actually be executed in series. Any synchronous setup + * sections for each task will happen one after the other. JavaScript remains + * single-threaded. + * + * It is also possible to use an object instead of an array. Each property will + * be run as a function and the results will be passed to the final `callback` + * as an object instead of an array. This can be a more readable way of handling + * results from {@link async.parallel}. + * + * @name parallel + * @static + * @memberOf module:ControlFlow + * @method + * @category Control Flow + * @param {Array|Iterable|Object} tasks - A collection containing functions to run. + * Each function is passed a `callback(err, result)` which it must call on + * completion with an error `err` (which can be `null`) and an optional `result` + * value. + * @param {Function} [callback] - An optional callback to run once all the + * functions have completed successfully. This function gets a results array + * (or object) containing all the result arguments passed to the task callbacks. + * Invoked with (err, results). + * @example + * async.parallel([ + * function(callback) { + * setTimeout(function() { + * callback(null, 'one'); + * }, 200); + * }, + * function(callback) { + * setTimeout(function() { + * callback(null, 'two'); + * }, 100); + * } + * ], + * // optional callback + * function(err, results) { + * // the results array will equal ['one','two'] even though + * // the second function had a shorter timeout. + * }); + * + * // an example using an object instead of an array + * async.parallel({ + * one: function(callback) { + * setTimeout(function() { + * callback(null, 1); + * }, 200); + * }, + * two: function(callback) { + * setTimeout(function() { + * callback(null, 2); + * }, 100); + * } + * }, function(err, results) { + * // results is now equals to: {one: 1, two: 2} + * }); + */ + function parallelLimit(tasks, callback) { + _parallel(eachOf, tasks, callback); + } + + /** + * The same as [`parallel`]{@link module:ControlFlow.parallel} but runs a maximum of `limit` async operations at a + * time. + * + * @name parallelLimit + * @static + * @memberOf module:ControlFlow + * @method + * @see [async.parallel]{@link module:ControlFlow.parallel} + * @category Control Flow + * @param {Array|Collection} tasks - A collection containing functions to run. + * Each function is passed a `callback(err, result)` which it must call on + * completion with an error `err` (which can be `null`) and an optional `result` + * value. + * @param {number} limit - The maximum number of async operations at a time. + * @param {Function} [callback] - An optional callback to run once all the + * functions have completed successfully. This function gets a results array + * (or object) containing all the result arguments passed to the task callbacks. + * Invoked with (err, results). + */ + function parallelLimit$1(tasks, limit, callback) { + _parallel(_eachOfLimit(limit), tasks, callback); + } + + /** + * A queue of tasks for the worker function to complete. + * @typedef {Object} QueueObject + * @memberOf module:ControlFlow + * @property {Function} length - a function returning the number of items + * waiting to be processed. Invoke with `queue.length()`. + * @property {boolean} started - a boolean indicating whether or not any + * items have been pushed and processed by the queue. + * @property {Function} running - a function returning the number of items + * currently being processed. Invoke with `queue.running()`. + * @property {Function} workersList - a function returning the array of items + * currently being processed. Invoke with `queue.workersList()`. + * @property {Function} idle - a function returning false if there are items + * waiting or being processed, or true if not. Invoke with `queue.idle()`. + * @property {number} concurrency - an integer for determining how many `worker` + * functions should be run in parallel. This property can be changed after a + * `queue` is created to alter the concurrency on-the-fly. + * @property {Function} push - add a new task to the `queue`. Calls `callback` + * once the `worker` has finished processing the task. Instead of a single task, + * a `tasks` array can be submitted. The respective callback is used for every + * task in the list. Invoke with `queue.push(task, [callback])`, + * @property {Function} unshift - add a new task to the front of the `queue`. + * Invoke with `queue.unshift(task, [callback])`. + * @property {Function} saturated - a callback that is called when the number of + * running workers hits the `concurrency` limit, and further tasks will be + * queued. + * @property {Function} unsaturated - a callback that is called when the number + * of running workers is less than the `concurrency` & `buffer` limits, and + * further tasks will not be queued. + * @property {number} buffer - A minimum threshold buffer in order to say that + * the `queue` is `unsaturated`. + * @property {Function} empty - a callback that is called when the last item + * from the `queue` is given to a `worker`. + * @property {Function} drain - a callback that is called when the last item + * from the `queue` has returned from the `worker`. + * @property {Function} error - a callback that is called when a task errors. + * Has the signature `function(error, task)`. + * @property {boolean} paused - a boolean for determining whether the queue is + * in a paused state. + * @property {Function} pause - a function that pauses the processing of tasks + * until `resume()` is called. Invoke with `queue.pause()`. + * @property {Function} resume - a function that resumes the processing of + * queued tasks when the queue is paused. Invoke with `queue.resume()`. + * @property {Function} kill - a function that removes the `drain` callback and + * empties remaining tasks from the queue forcing it to go idle. Invoke with `queue.kill()`. + */ + + /** + * Creates a `queue` object with the specified `concurrency`. Tasks added to the + * `queue` are processed in parallel (up to the `concurrency` limit). If all + * `worker`s are in progress, the task is queued until one becomes available. + * Once a `worker` completes a `task`, that `task`'s callback is called. + * + * @name queue + * @static + * @memberOf module:ControlFlow + * @method + * @category Control Flow + * @param {Function} worker - An asynchronous function for processing a queued + * task, which must call its `callback(err)` argument when finished, with an + * optional `error` as an argument. If you want to handle errors from an + * individual task, pass a callback to `q.push()`. Invoked with + * (task, callback). + * @param {number} [concurrency=1] - An `integer` for determining how many + * `worker` functions should be run in parallel. If omitted, the concurrency + * defaults to `1`. If the concurrency is `0`, an error is thrown. + * @returns {module:ControlFlow.QueueObject} A queue object to manage the tasks. Callbacks can + * attached as certain properties to listen for specific events during the + * lifecycle of the queue. + * @example + * + * // create a queue object with concurrency 2 + * var q = async.queue(function(task, callback) { + * console.log('hello ' + task.name); + * callback(); + * }, 2); + * + * // assign a callback + * q.drain = function() { + * console.log('all items have been processed'); + * }; + * + * // add some items to the queue + * q.push({name: 'foo'}, function(err) { + * console.log('finished processing foo'); + * }); + * q.push({name: 'bar'}, function (err) { + * console.log('finished processing bar'); + * }); + * + * // add some items to the queue (batch-wise) + * q.push([{name: 'baz'},{name: 'bay'},{name: 'bax'}], function(err) { + * console.log('finished processing item'); + * }); + * + * // add some items to the front of the queue + * q.unshift({name: 'bar'}, function (err) { + * console.log('finished processing bar'); + * }); + */ + function queue$1 (worker, concurrency) { + return queue(function (items, cb) { + worker(items[0], cb); + }, concurrency, 1); + } + + /** + * The same as [async.queue]{@link module:ControlFlow.queue} only tasks are assigned a priority and + * completed in ascending priority order. + * + * @name priorityQueue + * @static + * @memberOf module:ControlFlow + * @method + * @see [async.queue]{@link module:ControlFlow.queue} + * @category Control Flow + * @param {Function} worker - An asynchronous function for processing a queued + * task, which must call its `callback(err)` argument when finished, with an + * optional `error` as an argument. If you want to handle errors from an + * individual task, pass a callback to `q.push()`. Invoked with + * (task, callback). + * @param {number} concurrency - An `integer` for determining how many `worker` + * functions should be run in parallel. If omitted, the concurrency defaults to + * `1`. If the concurrency is `0`, an error is thrown. + * @returns {module:ControlFlow.QueueObject} A priorityQueue object to manage the tasks. There are two + * differences between `queue` and `priorityQueue` objects: + * * `push(task, priority, [callback])` - `priority` should be a number. If an + * array of `tasks` is given, all tasks will be assigned the same priority. + * * The `unshift` method was removed. + */ + function priorityQueue (worker, concurrency) { + // Start with a normal queue + var q = queue$1(worker, concurrency); + + // Override push to accept second parameter representing priority + q.push = function (data, priority, callback) { + if (callback == null) callback = noop; + if (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(); + }); + } + + priority = priority || 0; + var nextNode = q._tasks.head; + while (nextNode && priority >= nextNode.priority) { + nextNode = nextNode.next; + } + + arrayEach(data, function (task) { + var item = { + data: task, + priority: priority, + callback: callback + }; + + if (nextNode) { + q._tasks.insertBefore(nextNode, item); + } else { + q._tasks.push(item); + } + }); + setImmediate$1(q.process); + }; + + // Remove unshift function + delete q.unshift; + + return q; + } + + /** + * Runs the `tasks` array of functions in parallel, without waiting until the + * previous function has completed. Once any the `tasks` completed or pass an + * error to its callback, the main `callback` is immediately called. It's + * equivalent to `Promise.race()`. + * + * @name race + * @static + * @memberOf module:ControlFlow + * @method + * @category Control Flow + * @param {Array} tasks - An array containing functions to run. Each function + * is passed a `callback(err, result)` which it must call on completion with an + * error `err` (which can be `null`) and an optional `result` value. + * @param {Function} callback - A callback to run once any of the functions have + * completed. This function gets an error or result from the first function that + * completed. Invoked with (err, result). + * @returns undefined + * @example + * + * async.race([ + * function(callback) { + * setTimeout(function() { + * callback(null, 'one'); + * }, 200); + * }, + * function(callback) { + * setTimeout(function() { + * callback(null, 'two'); + * }, 100); + * } + * ], + * // main callback + * function(err, result) { + * // the result will be equal to 'two' as it finishes earlier + * }); + */ + function race(tasks, callback) { + callback = once(callback || noop); + if (!isArray(tasks)) return callback(new TypeError('First argument to race must be an array of functions')); + if (!tasks.length) return callback(); + arrayEach(tasks, function (task) { + task(callback); + }); + } + + var slice = Array.prototype.slice; + + /** + * Same as [`reduce`]{@link module:Collections.reduce}, only operates on `array` in reverse order. + * + * @name reduceRight + * @static + * @memberOf module:Collections + * @method + * @see [async.reduce]{@link module:Collections.reduce} + * @alias foldr + * @category Collection + * @param {Array} array - A collection to iterate over. + * @param {*} memo - The initial state of the reduction. + * @param {Function} iteratee - A function applied to each item in the + * array to produce the next step in the reduction. The `iteratee` is passed a + * `callback(err, reduction)` which accepts an optional error as its first + * argument, and the state of the reduction as the second. If an error is + * passed to the callback, the reduction is stopped and the main `callback` is + * immediately called with the error. Invoked with (memo, item, callback). + * @param {Function} [callback] - A callback which is called after all the + * `iteratee` functions have finished. Result is the reduced value. Invoked with + * (err, result). + */ + function reduceRight(array, memo, iteratee, callback) { + var reversed = slice.call(array).reverse(); + reduce(reversed, memo, iteratee, callback); + } + + /** + * Wraps the function in another function that always returns data even when it + * errors. + * + * The object returned has either the property `error` or `value`. + * + * @name reflect + * @static + * @memberOf module:Utils + * @method + * @category Util + * @param {Function} fn - The function you want to wrap + * @returns {Function} - A function that always passes null to it's callback as + * the error. The second argument to the callback will be an `object` with + * either an `error` or a `value` property. + * @example + * + * async.parallel([ + * async.reflect(function(callback) { + * // do some stuff ... + * callback(null, 'one'); + * }), + * async.reflect(function(callback) { + * // do some more stuff but error ... + * callback('bad stuff happened'); + * }), + * async.reflect(function(callback) { + * // do some more stuff ... + * callback(null, 'two'); + * }) + * ], + * // optional callback + * function(err, results) { + * // values + * // results[0].value = 'one' + * // results[1].error = 'bad stuff happened' + * // results[2].value = 'two' + * }); + */ + function reflect(fn) { + return initialParams(function reflectOn(args, reflectCallback) { + args.push(rest(function callback(err, cbArgs) { + if (err) { + reflectCallback(null, { + error: err + }); + } else { + var value = null; + if (cbArgs.length === 1) { + value = cbArgs[0]; + } else if (cbArgs.length > 1) { + value = cbArgs; + } + reflectCallback(null, { + value: value + }); + } + })); + + return fn.apply(this, args); + }); + } + + function reject$1(eachfn, arr, iteratee, callback) { + _filter(eachfn, arr, function (value, cb) { + iteratee(value, function (err, v) { + if (err) { + cb(err); + } else { + cb(null, !v); + } + }); + }, callback); + } + + /** + * The opposite of [`filter`]{@link module:Collections.filter}. Removes values that pass an `async` truth test. + * + * @name reject + * @static + * @memberOf module:Collections + * @method + * @see [async.filter]{@link module:Collections.filter} + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A truth test to apply to each item in `coll`. + * The `iteratee` is passed a `callback(err, truthValue)`, which must be called + * with a boolean argument once it has completed. Invoked with (item, callback). + * @param {Function} [callback] - A callback which is called after all the + * `iteratee` functions have finished. Invoked with (err, results). + * @example + * + * async.reject(['file1','file2','file3'], function(filePath, callback) { + * fs.access(filePath, function(err) { + * callback(null, !err) + * }); + * }, function(err, results) { + * // results now equals an array of missing files + * createFiles(results); + * }); + */ + var reject = doParallel(reject$1); + + /** + * A helper function that wraps an array or an object of functions with reflect. + * + * @name reflectAll + * @static + * @memberOf module:Utils + * @method + * @see [async.reflect]{@link module:Utils.reflect} + * @category Util + * @param {Array} tasks - The array of functions to wrap in `async.reflect`. + * @returns {Array} Returns an array of functions, each function wrapped in + * `async.reflect` + * @example + * + * let tasks = [ + * function(callback) { + * setTimeout(function() { + * callback(null, 'one'); + * }, 200); + * }, + * function(callback) { + * // do some more stuff but error ... + * callback(new Error('bad stuff happened')); + * }, + * function(callback) { + * setTimeout(function() { + * callback(null, 'two'); + * }, 100); + * } + * ]; + * + * async.parallel(async.reflectAll(tasks), + * // optional callback + * function(err, results) { + * // values + * // results[0].value = 'one' + * // results[1].error = Error('bad stuff happened') + * // results[2].value = 'two' + * }); + * + * // an example using an object instead of an array + * let tasks = { + * one: function(callback) { + * setTimeout(function() { + * callback(null, 'one'); + * }, 200); + * }, + * two: function(callback) { + * callback('two'); + * }, + * three: function(callback) { + * setTimeout(function() { + * callback(null, 'three'); + * }, 100); + * } + * }; + * + * async.parallel(async.reflectAll(tasks), + * // optional callback + * function(err, results) { + * // values + * // results.one.value = 'one' + * // results.two.error = 'two' + * // results.three.value = 'three' + * }); + */ + function reflectAll(tasks) { + var results; + if (isArray(tasks)) { + results = arrayMap(tasks, reflect); + } else { + results = {}; + baseForOwn(tasks, function (task, key) { + results[key] = reflect.call(this, task); + }); + } + return results; + } + + /** + * The same as [`reject`]{@link module:Collections.reject} but runs a maximum of `limit` async operations at a + * time. + * + * @name rejectLimit + * @static + * @memberOf module:Collections + * @method + * @see [async.reject]{@link module:Collections.reject} + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {number} limit - The maximum number of async operations at a time. + * @param {Function} iteratee - A truth test to apply to each item in `coll`. + * The `iteratee` is passed a `callback(err, truthValue)`, which must be called + * with a boolean argument once it has completed. Invoked with (item, callback). + * @param {Function} [callback] - A callback which is called after all the + * `iteratee` functions have finished. Invoked with (err, results). + */ + var rejectLimit = doParallelLimit(reject$1); + + /** + * The same as [`reject`]{@link module:Collections.reject} but runs only a single async operation at a time. + * + * @name rejectSeries + * @static + * @memberOf module:Collections + * @method + * @see [async.reject]{@link module:Collections.reject} + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A truth test to apply to each item in `coll`. + * The `iteratee` is passed a `callback(err, truthValue)`, which must be called + * with a boolean argument once it has completed. Invoked with (item, callback). + * @param {Function} [callback] - A callback which is called after all the + * `iteratee` functions have finished. Invoked with (err, results). + */ + var rejectSeries = doLimit(rejectLimit, 1); + + /** + * Creates a function that returns `value`. + * + * @static + * @memberOf _ + * @since 2.4.0 + * @category Util + * @param {*} value The value to return from the new function. + * @returns {Function} Returns the new constant function. + * @example + * + * var objects = _.times(2, _.constant({ 'a': 1 })); + * + * console.log(objects); + * // => [{ 'a': 1 }, { 'a': 1 }] + * + * console.log(objects[0] === objects[1]); + * // => true + */ + function constant$1(value) { + return function() { + return value; + }; + } + + /** + * Attempts to get a successful response from `task` no more than `times` times + * before returning an error. If the task is successful, the `callback` will be + * passed the result of the successful task. If all attempts fail, the callback + * will be passed the error and result (if any) of the final attempt. + * + * @name retry + * @static + * @memberOf module:ControlFlow + * @method + * @category Control Flow + * @param {Object|number} [opts = {times: 5, interval: 0}| 5] - Can be either an + * object with `times` and `interval` or a number. + * * `times` - The number of attempts to make before giving up. The default + * is `5`. + * * `interval` - The time to wait between retries, in milliseconds. The + * default is `0`. The interval may also be specified as a function of the + * retry count (see example). + * * If `opts` is a number, the number specifies the number of times to retry, + * with the default interval of `0`. + * @param {Function} task - A function which receives two arguments: (1) a + * `callback(err, result)` which must be called when finished, passing `err` + * (which can be `null`) and the `result` of the function's execution, and (2) + * a `results` object, containing the results of the previously executed + * functions (if nested inside another control flow). Invoked with + * (callback, results). + * @param {Function} [callback] - An optional callback which is called when the + * task has succeeded, or after the final failed attempt. It receives the `err` + * and `result` arguments of the last attempt at completing the `task`. Invoked + * with (err, results). + * @example + * + * // The `retry` function can be used as a stand-alone control flow by passing + * // a callback, as shown below: + * + * // try calling apiMethod 3 times + * async.retry(3, apiMethod, function(err, result) { + * // do something with the result + * }); + * + * // try calling apiMethod 3 times, waiting 200 ms between each retry + * async.retry({times: 3, interval: 200}, apiMethod, function(err, result) { + * // do something with the result + * }); + * + * // try calling apiMethod 10 times with exponential backoff + * // (i.e. intervals of 100, 200, 400, 800, 1600, ... milliseconds) + * async.retry({ + * times: 10, + * interval: function(retryCount) { + * return 50 * Math.pow(2, retryCount); + * } + * }, apiMethod, function(err, result) { + * // do something with the result + * }); + * + * // try calling apiMethod the default 5 times no delay between each retry + * async.retry(apiMethod, function(err, result) { + * // do something with the result + * }); + * + * // It can also be embedded within other control flow functions to retry + * // individual methods that are not as reliable, like this: + * async.auto({ + * users: api.getUsers.bind(api), + * payments: async.retry(3, api.getPayments.bind(api)) + * }, function(err, results) { + * // do something with the results + * }); + */ + function retry(opts, task, callback) { + var DEFAULT_TIMES = 5; + var DEFAULT_INTERVAL = 0; + + var options = { + times: DEFAULT_TIMES, + intervalFunc: constant$1(DEFAULT_INTERVAL) + }; + + function parseTimes(acc, t) { + if (typeof t === 'object') { + acc.times = +t.times || DEFAULT_TIMES; + + acc.intervalFunc = typeof t.interval === 'function' ? t.interval : constant$1(+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"); + } + } + + if (arguments.length < 3 && typeof opts === 'function') { + callback = task || noop; + task = opts; + } else { + parseTimes(options, opts); + callback = callback || noop; + } + + if (typeof task !== 'function') { + throw new Error("Invalid arguments for async.retry"); + } + + var attempt = 1; + function retryAttempt() { + task(function (err) { + if (err && attempt++ < options.times) { + setTimeout(retryAttempt, options.intervalFunc(attempt)); + } else { + callback.apply(null, arguments); + } + }); + } + + retryAttempt(); + } + + /** + * A close relative of [`retry`]{@link module:ControlFlow.retry}. This method wraps a task and makes it + * retryable, rather than immediately calling it with retries. + * + * @name retryable + * @static + * @memberOf module:ControlFlow + * @method + * @see [async.retry]{@link module:ControlFlow.retry} + * @category Control Flow + * @param {Object|number} [opts = {times: 5, interval: 0}| 5] - optional + * options, exactly the same as from `retry` + * @param {Function} task - the asynchronous function to wrap + * @returns {Functions} The wrapped function, which when invoked, will retry on + * an error, based on the parameters specified in `opts`. + * @example + * + * async.auto({ + * dep1: async.retryable(3, getFromFlakyService), + * process: ["dep1", async.retryable(3, function (results, cb) { + * maybeProcessData(results.dep1, cb); + * })] + * }, callback); + */ + function retryable (opts, task) { + if (!task) { + task = opts; + opts = null; + } + return initialParams(function (args, callback) { + function taskFn(cb) { + task.apply(null, args.concat([cb])); + } + + if (opts) retry(opts, taskFn, callback);else retry(taskFn, callback); + }); + } + + /** + * Run the functions in the `tasks` collection in series, each one running once + * the previous function has completed. If any functions in the series pass an + * error to its callback, no more functions are run, and `callback` is + * immediately called with the value of the error. Otherwise, `callback` + * receives an array of results when `tasks` have completed. + * + * It is also possible to use an object instead of an array. Each property will + * be run as a function, and the results will be passed to the final `callback` + * as an object instead of an array. This can be a more readable way of handling + * results from {@link async.series}. + * + * **Note** that while many implementations preserve the order of object + * properties, the [ECMAScript Language Specification](http://www.ecma-international.org/ecma-262/5.1/#sec-8.6) + * explicitly states that + * + * > The mechanics and order of enumerating the properties is not specified. + * + * So if you rely on the order in which your series of functions are executed, + * and want this to work on all platforms, consider using an array. + * + * @name series + * @static + * @memberOf module:ControlFlow + * @method + * @category Control Flow + * @param {Array|Iterable|Object} tasks - A collection containing functions to run, each + * function is passed a `callback(err, result)` it must call on completion with + * an error `err` (which can be `null`) and an optional `result` value. + * @param {Function} [callback] - An optional callback to run once all the + * functions have completed. This function gets a results array (or object) + * containing all the result arguments passed to the `task` callbacks. Invoked + * with (err, result). + * @example + * async.series([ + * function(callback) { + * // do some stuff ... + * callback(null, 'one'); + * }, + * function(callback) { + * // do some more stuff ... + * callback(null, 'two'); + * } + * ], + * // optional callback + * function(err, results) { + * // results is now equal to ['one', 'two'] + * }); + * + * async.series({ + * one: function(callback) { + * setTimeout(function() { + * callback(null, 1); + * }, 200); + * }, + * two: function(callback){ + * setTimeout(function() { + * callback(null, 2); + * }, 100); + * } + * }, function(err, results) { + * // results is now equal to: {one: 1, two: 2} + * }); + */ + function series(tasks, callback) { + _parallel(eachOfSeries, tasks, callback); + } + + /** + * Returns `true` if at least one element in the `coll` satisfies an async test. + * If any iteratee call returns `true`, the main `callback` is immediately + * called. + * + * @name some + * @static + * @memberOf module:Collections + * @method + * @alias any + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A truth test to apply to each item in the array + * in parallel. The iteratee is passed a `callback(err, truthValue)` which must + * be called with a boolean argument once it has completed. Invoked with + * (item, callback). + * @param {Function} [callback] - A callback which is called as soon as any + * iteratee returns `true`, or after all the iteratee functions have finished. + * Result will be either `true` or `false` depending on the values of the async + * tests. Invoked with (err, result). + * @example + * + * async.some(['file1','file2','file3'], function(filePath, callback) { + * fs.access(filePath, function(err) { + * callback(null, !err) + * }); + * }, function(err, result) { + * // if result is true then at least one of the files exists + * }); + */ + var some = _createTester(eachOf, Boolean, identity); + + /** + * The same as [`some`]{@link module:Collections.some} but runs a maximum of `limit` async operations at a time. + * + * @name someLimit + * @static + * @memberOf module:Collections + * @method + * @see [async.some]{@link module:Collections.some} + * @alias anyLimit + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {number} limit - The maximum number of async operations at a time. + * @param {Function} iteratee - A truth test to apply to each item in the array + * in parallel. The iteratee is passed a `callback(err, truthValue)` which must + * be called with a boolean argument once it has completed. Invoked with + * (item, callback). + * @param {Function} [callback] - A callback which is called as soon as any + * iteratee returns `true`, or after all the iteratee functions have finished. + * Result will be either `true` or `false` depending on the values of the async + * tests. Invoked with (err, result). + */ + var someLimit = _createTester(eachOfLimit, Boolean, identity); + + /** + * The same as [`some`]{@link module:Collections.some} but runs only a single async operation at a time. + * + * @name someSeries + * @static + * @memberOf module:Collections + * @method + * @see [async.some]{@link module:Collections.some} + * @alias anySeries + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A truth test to apply to each item in the array + * in parallel. The iteratee is passed a `callback(err, truthValue)` which must + * be called with a boolean argument once it has completed. Invoked with + * (item, callback). + * @param {Function} [callback] - A callback which is called as soon as any + * iteratee returns `true`, or after all the iteratee functions have finished. + * Result will be either `true` or `false` depending on the values of the async + * tests. Invoked with (err, result). + */ + var someSeries = doLimit(someLimit, 1); + + /** + * Sorts a list by the results of running each `coll` value through an async + * `iteratee`. + * + * @name sortBy + * @static + * @memberOf module:Collections + * @method + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {Function} iteratee - A function to apply to each item in `coll`. + * The iteratee is passed a `callback(err, sortValue)` which must be called once + * it has completed with an error (which can be `null`) and a value to use as + * the sort criteria. Invoked with (item, callback). + * @param {Function} callback - A callback which is called after all the + * `iteratee` functions have finished, or an error occurs. Results is the items + * from the original `coll` sorted by the values returned by the `iteratee` + * calls. Invoked with (err, results). + * @example + * + * async.sortBy(['file1','file2','file3'], function(file, callback) { + * fs.stat(file, function(err, stats) { + * callback(err, stats.mtime); + * }); + * }, function(err, results) { + * // results is now the original array of files sorted by + * // modified date + * }); + * + * // By modifying the callback parameter the + * // sorting order can be influenced: + * + * // ascending order + * async.sortBy([1,9,3,5], function(x, callback) { + * callback(null, x); + * }, function(err,result) { + * // result callback + * }); + * + * // descending order + * async.sortBy([1,9,3,5], function(x, callback) { + * callback(null, x*-1); //<- x*-1 instead of x, turns the order around + * }, function(err,result) { + * // result callback + * }); + */ + function sortBy(coll, iteratee, callback) { + map(coll, function (x, callback) { + iteratee(x, function (err, criteria) { + if (err) return callback(err); + callback(null, { value: x, criteria: criteria }); + }); + }, function (err, results) { + if (err) return callback(err); + callback(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; + } + } + + /** + * Sets a time limit on an asynchronous function. If the function does not call + * its callback within the specified milliseconds, it will be called with a + * timeout error. The code property for the error object will be `'ETIMEDOUT'`. + * + * @name timeout + * @static + * @memberOf module:Utils + * @method + * @category Util + * @param {Function} asyncFn - The asynchronous function you want to set the + * time limit. + * @param {number} milliseconds - The specified time limit. + * @param {*} [info] - Any variable you want attached (`string`, `object`, etc) + * to timeout Error for more information.. + * @returns {Function} Returns a wrapped function that can be used with any of + * the control flow functions. + * @example + * + * async.timeout(function(callback) { + * doAsyncTask(callback); + * }, 1000); + */ + function timeout(asyncFn, milliseconds, info) { + var originalCallback, timer; + var timedOut = false; + + function injectedCallback() { + if (!timedOut) { + originalCallback.apply(null, arguments); + clearTimeout(timer); + } + } + + function timeoutCallback() { + var name = asyncFn.name || 'anonymous'; + var error = new Error('Callback function "' + name + '" timed out.'); + error.code = 'ETIMEDOUT'; + if (info) { + error.info = info; + } + timedOut = true; + originalCallback(error); + } + + return initialParams(function (args, origCallback) { + originalCallback = origCallback; + // setup timer and call original function + timer = setTimeout(timeoutCallback, milliseconds); + asyncFn.apply(null, args.concat(injectedCallback)); + }); + } + + /* Built-in method references for those with the same name as other `lodash` methods. */ + var nativeCeil = Math.ceil; + var nativeMax$1 = 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 range of numbers. + */ + function baseRange(start, end, step, fromRight) { + var index = -1, + length = nativeMax$1(nativeCeil((end - start) / (step || 1)), 0), + result = Array(length); + + while (length--) { + result[fromRight ? length : ++index] = start; + start += step; + } + return result; + } + + /** + * The same as [times]{@link module:ControlFlow.times} but runs a maximum of `limit` async operations at a + * time. + * + * @name timesLimit + * @static + * @memberOf module:ControlFlow + * @method + * @see [async.times]{@link module:ControlFlow.times} + * @category Control Flow + * @param {number} count - The number of times to run the function. + * @param {number} limit - The maximum number of async operations at a time. + * @param {Function} iteratee - The function to call `n` times. Invoked with the + * iteration index and a callback (n, next). + * @param {Function} callback - see [async.map]{@link module:Collections.map}. + */ + function timeLimit(count, limit, iteratee, callback) { + mapLimit(baseRange(0, count, 1), limit, iteratee, callback); + } + + /** + * Calls the `iteratee` function `n` times, and accumulates results in the same + * manner you would use with [map]{@link module:Collections.map}. + * + * @name times + * @static + * @memberOf module:ControlFlow + * @method + * @see [async.map]{@link module:Collections.map} + * @category Control Flow + * @param {number} n - The number of times to run the function. + * @param {Function} iteratee - The function to call `n` times. Invoked with the + * iteration index and a callback (n, next). + * @param {Function} callback - see {@link module:Collections.map}. + * @example + * + * // Pretend this is some complicated async factory + * var createUser = function(id, callback) { + * callback(null, { + * id: 'user' + id + * }); + * }; + * + * // generate 5 users + * async.times(5, function(n, next) { + * createUser(n, function(err, user) { + * next(err, user); + * }); + * }, function(err, users) { + * // we should now have 5 users + * }); + */ + var times = doLimit(timeLimit, Infinity); + + /** + * The same as [times]{@link module:ControlFlow.times} but runs only a single async operation at a time. + * + * @name timesSeries + * @static + * @memberOf module:ControlFlow + * @method + * @see [async.times]{@link module:ControlFlow.times} + * @category Control Flow + * @param {number} n - The number of times to run the function. + * @param {Function} iteratee - The function to call `n` times. Invoked with the + * iteration index and a callback (n, next). + * @param {Function} callback - see {@link module:Collections.map}. + */ + var timesSeries = doLimit(timeLimit, 1); + + /** + * A relative of `reduce`. Takes an Object or Array, and iterates over each + * element in series, each step potentially mutating an `accumulator` value. + * The type of the accumulator defaults to the type of collection passed in. + * + * @name transform + * @static + * @memberOf module:Collections + * @method + * @category Collection + * @param {Array|Iterable|Object} coll - A collection to iterate over. + * @param {*} [accumulator] - The initial state of the transform. If omitted, + * it will default to an empty Object or Array, depending on the type of `coll` + * @param {Function} iteratee - A function applied to each item in the + * collection that potentially modifies the accumulator. The `iteratee` is + * passed a `callback(err)` which accepts an optional error as its first + * argument. If an error is passed to the callback, the transform is stopped + * and the main `callback` is immediately called with the error. + * Invoked with (accumulator, item, key, callback). + * @param {Function} [callback] - A callback which is called after all the + * `iteratee` functions have finished. Result is the transformed accumulator. + * Invoked with (err, result). + * @example + * + * async.transform([1,2,3], function(acc, item, index, callback) { + * // pointless async: + * process.nextTick(function() { + * acc.push(item * 2) + * callback(null) + * }); + * }, function(err, result) { + * // result is now equal to [2, 4, 6] + * }); + * + * @example + * + * async.transform({a: 1, b: 2, c: 3}, function (obj, val, key, callback) { + * setImmediate(function () { + * obj[key] = val * 2; + * callback(); + * }) + * }, function (err, result) { + * // result is equal to {a: 2, b: 4, c: 6} + * }) + */ + function transform(coll, accumulator, iteratee, callback) { + if (arguments.length === 3) { + callback = iteratee; + iteratee = accumulator; + accumulator = isArray(coll) ? [] : {}; + } + callback = once(callback || noop); + + eachOf(coll, function (v, k, cb) { + iteratee(accumulator, v, k, cb); + }, function (err) { + callback(err, accumulator); + }); + } + + /** + * Undoes a [memoize]{@link module:Utils.memoize}d function, reverting it to the original, + * unmemoized form. Handy for testing. + * + * @name unmemoize + * @static + * @memberOf module:Utils + * @method + * @see [async.memoize]{@link module:Utils.memoize} + * @category Util + * @param {Function} fn - the memoized function + * @returns {Function} a function that calls the original unmemoized function + */ + function unmemoize(fn) { + return function () { + return (fn.unmemoized || fn).apply(null, arguments); + }; + } + + /** + * Repeatedly call `fn`, while `test` returns `true`. Calls `callback` when + * stopped, or an error occurs. + * + * @name whilst + * @static + * @memberOf module:ControlFlow + * @method + * @category Control Flow + * @param {Function} test - synchronous truth test to perform before each + * execution of `fn`. Invoked with (). + * @param {Function} iteratee - A function which is called each time `test` passes. + * The function is passed a `callback(err)`, which must be called once it has + * completed with an optional `err` argument. Invoked with (callback). + * @param {Function} [callback] - A callback which is called after the test + * function has failed and repeated execution of `fn` has stopped. `callback` + * will be passed an error and any arguments passed to the final `fn`'s + * callback. Invoked with (err, [results]); + * @returns undefined + * @example + * + * var count = 0; + * async.whilst( + * function() { return count < 5; }, + * function(callback) { + * count++; + * setTimeout(function() { + * callback(null, count); + * }, 1000); + * }, + * function (err, n) { + * // 5 seconds have passed, n = 5 + * } + * ); + */ + function whilst(test, iteratee, callback) { + callback = onlyOnce(callback || noop); + if (!test()) return callback(null); + var next = rest(function (err, args) { + if (err) return callback(err); + if (test()) return iteratee(next); + callback.apply(null, [null].concat(args)); + }); + iteratee(next); + } + + /** + * Repeatedly call `fn` until `test` returns `true`. Calls `callback` when + * stopped, or an error occurs. `callback` will be passed an error and any + * arguments passed to the final `fn`'s callback. + * + * The inverse of [whilst]{@link module:ControlFlow.whilst}. + * + * @name until + * @static + * @memberOf module:ControlFlow + * @method + * @see [async.whilst]{@link module:ControlFlow.whilst} + * @category Control Flow + * @param {Function} test - synchronous truth test to perform before each + * execution of `fn`. Invoked with (). + * @param {Function} fn - A function which is called each time `test` fails. + * The function is passed a `callback(err)`, which must be called once it has + * completed with an optional `err` argument. Invoked with (callback). + * @param {Function} [callback] - A callback which is called after the test + * function has passed and repeated execution of `fn` has stopped. `callback` + * will be passed an error and any arguments passed to the final `fn`'s + * callback. Invoked with (err, [results]); + */ + function until(test, fn, callback) { + whilst(function () { + return !test.apply(this, arguments); + }, fn, callback); + } + + /** + * Runs the `tasks` array of functions in series, each passing their results to + * the next in the array. However, if any of the `tasks` pass an error to their + * own callback, the next function is not executed, and the main `callback` is + * immediately called with the error. + * + * @name waterfall + * @static + * @memberOf module:ControlFlow + * @method + * @category Control Flow + * @param {Array} tasks - An array of functions to run, each function is passed + * a `callback(err, result1, result2, ...)` it must call on completion. The + * first argument is an error (which can be `null`) and any further arguments + * will be passed as arguments in order to the next task. + * @param {Function} [callback] - An optional callback to run once all the + * functions have completed. This will be passed the results of the last task's + * callback. Invoked with (err, [results]). + * @returns undefined + * @example + * + * async.waterfall([ + * function(callback) { + * callback(null, 'one', 'two'); + * }, + * function(arg1, arg2, callback) { + * // arg1 now equals 'one' and arg2 now equals 'two' + * callback(null, 'three'); + * }, + * function(arg1, callback) { + * // arg1 now equals 'three' + * callback(null, 'done'); + * } + * ], function (err, result) { + * // result now equals 'done' + * }); + * + * // Or, with named functions: + * async.waterfall([ + * myFirstFunction, + * mySecondFunction, + * myLastFunction, + * ], function (err, result) { + * // result now equals 'done' + * }); + * function myFirstFunction(callback) { + * callback(null, 'one', 'two'); + * } + * function mySecondFunction(arg1, arg2, callback) { + * // arg1 now equals 'one' and arg2 now equals 'two' + * callback(null, 'three'); + * } + * function myLastFunction(arg1, callback) { + * // arg1 now equals 'three' + * callback(null, 'done'); + * } + */ + function waterfall (tasks, callback) { + callback = once(callback || noop); + if (!isArray(tasks)) return callback(new Error('First argument to waterfall must be an array of functions')); + if (!tasks.length) return callback(); + var taskIndex = 0; + + function nextTask(args) { + if (taskIndex === tasks.length) { + return callback.apply(null, [null].concat(args)); + } + + var taskCallback = onlyOnce(rest(function (err, args) { + if (err) { + return callback.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, + detect: detect, + detectLimit: detectLimit, + detectSeries: detectSeries, + dir: dir, + doDuring: doDuring, + doUntil: doUntil, + doWhilst: doWhilst, + during: during, + each: eachLimit, + eachLimit: eachLimit$1, + eachOf: eachOf, + eachOfLimit: eachOfLimit, + eachOfSeries: eachOfSeries, + eachSeries: eachSeries, + ensureAsync: ensureAsync, + every: every, + everyLimit: everyLimit, + everySeries: everySeries, + filter: filter, + filterLimit: filterLimit, + filterSeries: filterSeries, + forever: forever, + log: log, + map: map, + mapLimit: mapLimit, + mapSeries: mapSeries, + mapValues: mapValues, + mapValuesLimit: mapValuesLimit, + mapValuesSeries: mapValuesSeries, + memoize: memoize, + nextTick: nextTick, + parallel: parallelLimit, + parallelLimit: parallelLimit$1, + priorityQueue: priorityQueue, + queue: queue$1, + race: race, + reduce: reduce, + reduceRight: reduceRight, + reflect: reflect, + reflectAll: reflectAll, + reject: reject, + rejectLimit: rejectLimit, + rejectSeries: rejectSeries, + retry: retry, + retryable: retryable, + 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: eachLimit, + forEachSeries: eachSeries, + forEachLimit: eachLimit$1, + 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; + 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 = eachLimit; + exports.eachLimit = eachLimit$1; + 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.log = log; + exports.map = map; + exports.mapLimit = mapLimit; + exports.mapSeries = mapSeries; + exports.mapValues = mapValues; + exports.mapValuesLimit = mapValuesLimit; + exports.mapValuesSeries = mapValuesSeries; + exports.memoize = memoize; + exports.nextTick = nextTick; + exports.parallel = parallelLimit; + exports.parallelLimit = parallelLimit$1; + exports.priorityQueue = priorityQueue; + exports.queue = queue$1; + exports.race = race; + exports.reduce = reduce; + exports.reduceRight = reduceRight; + exports.reflect = reflect; + exports.reflectAll = reflectAll; + exports.reject = reject; + exports.rejectLimit = rejectLimit; + exports.rejectSeries = rejectSeries; + exports.retry = retry; + exports.retryable = retryable; + 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 = eachLimit; + exports.forEachSeries = eachSeries; + exports.forEachLimit = eachLimit$1; + 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; + +}));
\ No newline at end of file diff --git a/node_modules/async/dist/async.min.js b/node_modules/async/dist/async.min.js new file mode 100644 index 000000000..4d5d88a0e --- /dev/null +++ b/node_modules/async/dist/async.min.js @@ -0,0 +1,2 @@ +!function(n,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t(n.async=n.async||{})}(this,function(n){"use strict";function t(n,t,e){var r=e.length;switch(r){case 0:return n.call(t);case 1:return n.call(t,e[0]);case 2:return n.call(t,e[0],e[1]);case 3:return n.call(t,e[0],e[1],e[2])}return n.apply(t,e)}function e(n){var t=typeof n;return!!n&&("object"==t||"function"==t)}function r(n){var t=e(n)?st.call(n):"";return t==ft||t==at}function u(n){return!!n&&"object"==typeof n}function i(n){return"symbol"==typeof n||u(n)&&vt.call(n)==pt}function o(n){if("number"==typeof n)return n;if(i(n))return yt;if(e(n)){var t=r(n.valueOf)?n.valueOf():n;n=e(t)?t+"":t}if("string"!=typeof n)return 0===n?n:+n;n=n.replace(mt,"");var u=gt.test(n);return u||bt.test(n)?St(n.slice(2),u?2:8):dt.test(n)?yt:+n}function c(n){if(!n)return 0===n?n:0;if(n=o(n),n===jt||n===-jt){var t=0>n?-1:1;return t*kt}return n===n?n:0}function f(n){var t=c(n),e=t%1;return t===t?e?t-e:t:0}function a(n,e){if("function"!=typeof n)throw new TypeError(wt);return e=Et(void 0===e?n.length-1:f(e),0),function(){for(var r=arguments,u=-1,i=Et(r.length-e,0),o=Array(i);++u<i;)o[u]=r[e+u];switch(e){case 0:return n.call(this,o);case 1:return n.call(this,r[0],o);case 2:return n.call(this,r[0],r[1],o)}var c=Array(e+1);for(u=-1;++u<e;)c[u]=r[u];return c[e]=o,t(n,this,c)}}function l(n){return a(function(t){var e=t.pop();n.call(this,t,e)})}function s(n){return a(function(t,e){var r=l(function(e,r){var u=this;return n(t,function(n,t){n.apply(u,e.concat([t]))},r)});return e.length?r.apply(this,e):r})}function p(n){return function(t){return null==t?void 0:t[n]}}function h(n){return"number"==typeof n&&n>-1&&n%1==0&&Lt>=n}function v(n){return null!=n&&h(xt(n))&&!r(n)}function y(){}function m(n){return function(){if(null!==n){var t=n;n=null,t.apply(this,arguments)}}}function d(n){return Ot&&n[Ot]&&n[Ot]()}function g(n){return At(Object(n))}function b(n,t){return null!=n&&(Tt.call(n,t)||"object"==typeof n&&t in n&&null===g(n))}function S(n){return _t(Object(n))}function j(n,t){for(var e=-1,r=Array(n);++e<n;)r[e]=t(e);return r}function k(n){return u(n)&&v(n)}function w(n){return k(n)&&zt.call(n,"callee")&&(!Mt.call(n,"callee")||Bt.call(n)==Ft)}function E(n){return"string"==typeof n||!Vt(n)&&u(n)&&Dt.call(n)==qt}function x(n){var t=n?n.length:void 0;return h(t)&&(Vt(n)||E(n)||w(n))?j(t,String):null}function L(n,t){return t=null==t?Pt:t,!!t&&("number"==typeof n||Rt.test(n))&&n>-1&&n%1==0&&t>n}function O(n){var t=n&&n.constructor,e="function"==typeof t&&t.prototype||Ut;return n===e}function A(n){var t=O(n);if(!t&&!v(n))return S(n);var e=x(n),r=!!e,u=e||[],i=u.length;for(var o in n)!b(n,o)||r&&("length"==o||L(o,i))||t&&"constructor"==o||u.push(o);return u}function I(n){var t=-1,e=n.length;return function(){return++t<e?{value:n[t],key:t}:null}}function T(n){var t=-1;return function(){var e=n.next();return e.done?null:(t++,{value:e.value,key:t})}}function _(n){var t=A(n),e=-1,r=t.length;return function(){var u=t[++e];return r>e?{value:n[u],key:u}:null}}function F(n){if(v(n))return I(n);var t=d(n);return t?T(t):_(n)}function $(n){return function(){if(null===n)throw new Error("Callback was already called.");var t=n;n=null,t.apply(this,arguments)}}function z(n){return function(t,e,r){function u(n){if(f-=1,n)c=!0,r(n);else{if(c&&0>=f)return r(null);i()}}function i(){for(;n>f&&!c;){var t=o();if(null===t)return c=!0,void(0>=f&&r(null));f+=1,e(t.value,t.key,$(u))}}if(r=m(r||y),0>=n||!t)return r(null);var o=F(t),c=!1,f=0;i()}}function B(n,t,e,r){z(t)(n,e,r)}function M(n,t){return function(e,r,u){return n(e,t,r,u)}}function V(n,t){var e;if("function"!=typeof t)throw new TypeError(Nt);return n=f(n),function(){return--n>0&&(e=t.apply(this,arguments)),1>=n&&(t=void 0),e}}function q(n){return V(2,n)}function C(n,t,e){function r(n){n?e(n):++i===o&&e(null)}e=q(e||y);var u=0,i=0,o=n.length;for(0===o&&e(null);o>u;u++)t(n[u],u,$(r))}function D(n,t,e){var r=v(n)?C:Qt;r(n,t,e)}function P(n){return function(t,e,r){return n(D,t,e,r)}}function R(n,t,e,r){r=m(r||y),t=t||[];var u=[],i=0;n(t,function(n,t,r){var o=i++;e(n,function(n,t){u[o]=t,r(n)})},function(n){r(n,u)})}function U(n){return function(t,e,r,u){return n(z(e),t,r,u)}}function N(n){return l(function(t,r){var u;try{u=n.apply(this,t)}catch(i){return r(i)}e(u)&&"function"==typeof u.then?u.then(function(n){r(null,n)},function(n){r(n.message?n:new Error(n))}):r(null,u)})}function Q(n,t){for(var e=-1,r=n?n.length:0;++e<r&&t(n[e],e,n)!==!1;);return n}function W(n){return function(t,e,r){for(var u=-1,i=Object(t),o=r(t),c=o.length;c--;){var f=o[n?c:++u];if(e(i[f],f,i)===!1)break}return t}}function G(n,t){return n&&Yt(n,t,A)}function H(n,t,e){for(var r=n.length,u=t+(e?1:-1);e?u--:++u<r;){var i=n[u];if(i!==i)return u}return-1}function J(n,t,e){if(t!==t)return H(n,e);for(var r=e-1,u=n.length;++r<u;)if(n[r]===t)return r;return-1}function K(n,t,e){function r(n,t){b.push(function(){c(n,t)})}function u(){if(0===b.length&&0===v)return e(null,h);for(;b.length&&t>v;){var n=b.shift();n()}}function i(n,t){var e=g[n];e||(e=g[n]=[]),e.push(t)}function o(n){var t=g[n]||[];Q(t,function(n){n()}),u()}function c(n,t){if(!d){var r=$(a(function(t,r){if(v--,r.length<=1&&(r=r[0]),t){var u={};G(h,function(n,t){u[t]=n}),u[n]=r,d=!0,g=[],e(t,u)}else h[n]=r,o(n)}));v++;var u=t[t.length-1];t.length>1?u(h,r):u(r)}}function f(){for(var n,t=0;S.length;)n=S.pop(),t++,Q(l(n),function(n){0===--j[n]&&S.push(n)});if(t!==p)throw new Error("async.auto cannot execute tasks due to a recursive dependency")}function l(t){var e=[];return G(n,function(n,r){Vt(n)&&J(n,t,0)>=0&&e.push(r)}),e}"function"==typeof t&&(e=t,t=null),e=m(e||y);var s=A(n),p=s.length;if(!p)return e(null);t||(t=p);var h={},v=0,d=!1,g={},b=[],S=[],j={};G(n,function(t,e){if(!Vt(t))return r(e,[t]),void S.push(e);var u=t.slice(0,t.length-1),o=u.length;return 0===o?(r(e,t),void S.push(e)):(j[e]=o,void Q(u,function(c){if(!n[c])throw new Error("async.auto task `"+e+"` has a non-existent dependency in "+u.join(", "));i(c,function(){o--,0===o&&r(e,t)})}))}),f(),u()}function X(n,t){for(var e=-1,r=n?n.length:0,u=Array(r);++e<r;)u[e]=t(n[e],e,n);return u}function Y(n,t){var e=-1,r=n.length;for(t||(t=Array(r));++e<r;)t[e]=n[e];return t}function Z(n){return n&&n.Object===Object?n:null}function nn(n){if("string"==typeof n)return n;if(i(n))return oe?oe.call(n):"";var t=n+"";return"0"==t&&1/n==-ue?"-0":t}function tn(n,t,e){var r=-1,u=n.length;0>t&&(t=-t>u?0:u+t),e=e>u?u:e,0>e&&(e+=u),u=t>e?0:e-t>>>0,t>>>=0;for(var i=Array(u);++r<u;)i[r]=n[r+t];return i}function en(n,t,e){var r=n.length;return e=void 0===e?r:e,!t&&e>=r?n:tn(n,t,e)}function rn(n,t){for(var e=n.length;e--&&J(t,n[e],0)>-1;);return e}function un(n,t){for(var e=-1,r=n.length;++e<r&&J(t,n[e],0)>-1;);return e}function on(n){return n.match(Ee)}function cn(n){return null==n?"":nn(n)}function fn(n,t,e){if(n=cn(n),n&&(e||void 0===t))return n.replace(xe,"");if(!n||!(t=nn(t)))return n;var r=on(n),u=on(t),i=un(r,u),o=rn(r,u)+1;return en(r,i,o).join("")}function an(n){return n=n.toString().replace(Ie,""),n=n.match(Le)[2].replace(" ",""),n=n?n.split(Oe):[],n=n.map(function(n){return fn(n.replace(Ae,""))})}function ln(n,t){var e={};G(n,function(n,t){function r(t,e){var r=X(u,function(n){return t[n]});r.push(e),n.apply(null,r)}var u;if(Vt(n))u=Y(n),n=u.pop(),e[t]=u.concat(u.length>0?r:n);else if(1===n.length)e[t]=n;else{if(u=an(n),0===n.length&&0===u.length)throw new Error("autoInject task functions require explicit parameters.");u.pop(),e[t]=u.concat(r)}}),K(e,t)}function sn(n){setTimeout(n,0)}function pn(n){return a(function(t,e){n(function(){t.apply(null,e)})})}function hn(){this.head=this.tail=null,this.length=0}function vn(n,t){n.length=1,n.head=n.tail=t}function yn(n,t,e){function r(n,t,e){if(null!=e&&"function"!=typeof e)throw new Error("task callback must be a function");return c.started=!0,Vt(n)||(n=[n]),0===n.length&&c.idle()?Fe(function(){c.drain()}):(Q(n,function(n){var r={data:n,callback:e||y};t?c._tasks.unshift(r):c._tasks.push(r)}),void Fe(c.process))}function u(n){return a(function(t){i-=1,Q(n,function(n){Q(o,function(t,e){return t===n?(o.splice(e,1),!1):void 0}),n.callback.apply(n,t),null!=t[0]&&c.error(t[0],n.data)}),i<=c.concurrency-c.buffer&&c.unsaturated(),c.idle()&&c.drain(),c.process()})}if(null==t)t=1;else if(0===t)throw new Error("Concurrency must not be zero");var i=0,o=[],c={_tasks:new hn,concurrency:t,payload:e,saturated:y,unsaturated:y,buffer:t/4,empty:y,drain:y,error:y,started:!1,paused:!1,push:function(n,t){r(n,!1,t)},kill:function(){c.drain=y,c._tasks.empty()},unshift:function(n,t){r(n,!0,t)},process:function(){for(;!c.paused&&i<c.concurrency&&c._tasks.length;){var t=[],e=[],r=c._tasks.length;c.payload&&(r=Math.min(r,c.payload));for(var f=0;r>f;f++){var a=c._tasks.shift();t.push(a),e.push(a.data)}0===c._tasks.length&&c.empty(),i+=1,o.push(t[0]),i===c.concurrency&&c.saturated();var l=$(u(t));n(e,l)}},length:function(){return c._tasks.length},running:function(){return i},workersList:function(){return o},idle:function(){return c._tasks.length+i===0},pause:function(){c.paused=!0},resume:function(){if(c.paused!==!1){c.paused=!1;for(var n=Math.min(c.concurrency,c._tasks.length),t=1;n>=t;t++)Fe(c.process)}}};return c}function mn(n,t){return yn(n,1,t)}function dn(n,t,e,r){r=m(r||y),ze(n,function(n,r,u){e(t,n,function(n,e){t=e,u(n)})},function(n){r(n,t)})}function gn(n,t,e,r){var u=[];n(t,function(n,t,r){e(n,function(n,t){u=u.concat(t||[]),r(n)})},function(n){r(n,u)})}function bn(n){return function(t,e,r){return n(ze,t,e,r)}}function Sn(n){return n}function jn(n,t,e){return function(r,u,i,o){function c(n){o&&(n?o(n):o(null,e(!1)))}function f(n,r,u){return o?void i(n,function(r,c){o&&(r?(o(r),o=i=!1):t(c)&&(o(null,e(!0,n)),o=i=!1)),u()}):u()}arguments.length>3?(o=o||y,n(r,u,f,c)):(o=i,o=o||y,i=u,n(r,f,c))}}function kn(n,t){return t}function wn(n){return a(function(t,e){t.apply(null,e.concat([a(function(t,e){"object"==typeof console&&(t?console.error&&console.error(t):console[n]&&Q(e,function(t){console[n](t)}))})]))})}function En(n,t,e){function r(t,r){return t?e(t):r?void n(u):e(null)}e=$(e||y);var u=a(function(n,u){return n?e(n):(u.push(r),void t.apply(this,u))});r(null,!0)}function xn(n,t,e){e=$(e||y);var r=a(function(u,i){return u?e(u):t.apply(this,i)?n(r):void e.apply(null,[null].concat(i))});n(r)}function Ln(n,t,e){xn(n,function(){return!t.apply(this,arguments)},e)}function On(n,t,e){function r(t){return t?e(t):void n(u)}function u(n,u){return n?e(n):u?void t(r):e(null)}e=$(e||y),n(u)}function An(n){return function(t,e,r){return n(t,r)}}function In(n,t,e){D(n,An(t),e)}function Tn(n,t,e,r){z(t)(n,An(e),r)}function _n(n){return l(function(t,e){var r=!0;t.push(function(){var n=arguments;r?Fe(function(){e.apply(null,n)}):e.apply(null,n)}),n.apply(this,t),r=!1})}function Fn(n){return!n}function $n(n,t,e,r){r=m(r||y);var u=[];n(t,function(n,t,r){e(n,function(e,i){e?r(e):(i&&u.push({index:t,value:n}),r())})},function(n){n?r(n):r(null,X(u.sort(function(n,t){return n.index-t.index}),p("value")))})}function zn(n,t){function e(n){return n?r(n):void u(e)}var r=$(t||y),u=_n(n);e()}function Bn(n,t,e,r){r=m(r||y);var u={};B(n,t,function(n,t,r){e(n,t,function(n,e){return n?r(n):(u[t]=e,void r())})},function(n){r(n,u)})}function Mn(n,t){return t in n}function Vn(n,t){var e=Object.create(null),r=Object.create(null);t=t||Sn;var u=l(function(u,i){var o=t.apply(null,u);Mn(e,o)?Fe(function(){i.apply(null,e[o])}):Mn(r,o)?r[o].push(i):(r[o]=[i],n.apply(null,u.concat([a(function(n){e[o]=n;var t=r[o];delete r[o];for(var u=0,i=t.length;i>u;u++)t[u].apply(null,n)})])))});return u.memo=e,u.unmemoized=n,u}function qn(n,t,e){e=e||y;var r=v(t)?[]:{};n(t,function(n,t,e){n(a(function(n,u){u.length<=1&&(u=u[0]),r[t]=u,e(n)}))},function(n){e(n,r)})}function Cn(n,t){qn(D,n,t)}function Dn(n,t,e){qn(z(t),n,e)}function Pn(n,t){return yn(function(t,e){n(t[0],e)},t,1)}function Rn(n,t){var e=Pn(n,t);return e.push=function(n,t,r){if(null==r&&(r=y),"function"!=typeof r)throw new Error("task callback must be a function");if(e.started=!0,Vt(n)||(n=[n]),0===n.length)return Fe(function(){e.drain()});t=t||0;for(var u=e._tasks.head;u&&t>=u.priority;)u=u.next;Q(n,function(n){var i={data:n,priority:t,callback:r};u?e._tasks.insertBefore(u,i):e._tasks.push(i)}),Fe(e.process)},delete e.unshift,e}function Un(n,t){return t=m(t||y),Vt(n)?n.length?void Q(n,function(n){n(t)}):t():t(new TypeError("First argument to race must be an array of functions"))}function Nn(n,t,e,r){var u=tr.call(n).reverse();dn(u,t,e,r)}function Qn(n){return l(function(t,e){return t.push(a(function(n,t){if(n)e(null,{error:n});else{var r=null;1===t.length?r=t[0]:t.length>1&&(r=t),e(null,{value:r})}})),n.apply(this,t)})}function Wn(n,t,e,r){$n(n,t,function(n,t){e(n,function(n,e){n?t(n):t(null,!e)})},r)}function Gn(n){var t;return Vt(n)?t=X(n,Qn):(t={},G(n,function(n,e){t[e]=Qn.call(this,n)})),t}function Hn(n){return function(){return n}}function Jn(n,t,e){function r(n,t){if("object"==typeof t)n.times=+t.times||i,n.intervalFunc="function"==typeof t.interval?t.interval:Hn(+t.interval||o);else{if("number"!=typeof t&&"string"!=typeof t)throw new Error("Invalid arguments for async.retry");n.times=+t||i}}function u(){t(function(n){n&&f++<c.times?setTimeout(u,c.intervalFunc(f)):e.apply(null,arguments)})}var i=5,o=0,c={times:i,intervalFunc:Hn(o)};if(arguments.length<3&&"function"==typeof n?(e=t||y,t=n):(r(c,n),e=e||y),"function"!=typeof t)throw new Error("Invalid arguments for async.retry");var f=1;u()}function Kn(n,t){return t||(t=n,n=null),l(function(e,r){function u(n){t.apply(null,e.concat([n]))}n?Jn(n,u,r):Jn(u,r)})}function Xn(n,t){qn(ze,n,t)}function Yn(n,t,e){function r(n,t){var e=n.criteria,r=t.criteria;return r>e?-1:e>r?1:0}Wt(n,function(n,e){t(n,function(t,r){return t?e(t):void e(null,{value:n,criteria:r})})},function(n,t){return n?e(n):void e(null,X(t.sort(r),p("value")))})}function Zn(n,t,e){function r(){c||(i.apply(null,arguments),clearTimeout(o))}function u(){var t=n.name||"anonymous",r=new Error('Callback function "'+t+'" timed out.');r.code="ETIMEDOUT",e&&(r.info=e),c=!0,i(r)}var i,o,c=!1;return l(function(e,c){i=c,o=setTimeout(u,t),n.apply(null,e.concat(r))})}function nt(n,t,e,r){for(var u=-1,i=ar(fr((t-n)/(e||1)),0),o=Array(i);i--;)o[r?i:++u]=n,n+=e;return o}function tt(n,t,e,r){Ht(nt(0,n,1),t,e,r)}function et(n,t,e,r){3===arguments.length&&(r=e,e=t,t=Vt(n)?[]:{}),r=m(r||y),D(n,function(n,r,u){e(t,n,r,u)},function(n){r(n,t)})}function rt(n){return function(){return(n.unmemoized||n).apply(null,arguments)}}function ut(n,t,e){if(e=$(e||y),!n())return e(null);var r=a(function(u,i){return u?e(u):n()?t(r):void e.apply(null,[null].concat(i))});t(r)}function it(n,t,e){ut(function(){return!n.apply(this,arguments)},t,e)}function ot(n,t){function e(u){if(r===n.length)return t.apply(null,[null].concat(u));var i=$(a(function(n,r){return n?t.apply(null,[n].concat(r)):void e(r)}));u.push(i);var o=n[r++];o.apply(null,u)}if(t=m(t||y),!Vt(n))return t(new Error("First argument to waterfall must be an array of functions"));if(!n.length)return t();var r=0;e([])}var ct,ft="[object Function]",at="[object GeneratorFunction]",lt=Object.prototype,st=lt.toString,pt="[object Symbol]",ht=Object.prototype,vt=ht.toString,yt=NaN,mt=/^\s+|\s+$/g,dt=/^[-+]0x[0-9a-f]+$/i,gt=/^0b[01]+$/i,bt=/^0o[0-7]+$/i,St=parseInt,jt=1/0,kt=1.7976931348623157e308,wt="Expected a function",Et=Math.max,xt=p("length"),Lt=9007199254740991,Ot="function"==typeof Symbol&&Symbol.iterator,At=Object.getPrototypeOf,It=Object.prototype,Tt=It.hasOwnProperty,_t=Object.keys,Ft="[object Arguments]",$t=Object.prototype,zt=$t.hasOwnProperty,Bt=$t.toString,Mt=$t.propertyIsEnumerable,Vt=Array.isArray,qt="[object String]",Ct=Object.prototype,Dt=Ct.toString,Pt=9007199254740991,Rt=/^(?:0|[1-9]\d*)$/,Ut=Object.prototype,Nt="Expected a function",Qt=M(B,1/0),Wt=P(R),Gt=s(Wt),Ht=U(R),Jt=M(Ht,1),Kt=s(Jt),Xt=a(function(n,t){return a(function(e){return n.apply(null,t.concat(e))})}),Yt=W(),Zt=Z("object"==typeof global&&global),ne=Z("object"==typeof self&&self),te=Z("object"==typeof this&&this),ee=Zt||ne||te||Function("return this")(),re=ee.Symbol,ue=1/0,ie=re?re.prototype:void 0,oe=ie?ie.toString:void 0,ce="\\ud800-\\udfff",fe="\\u0300-\\u036f\\ufe20-\\ufe23",ae="\\u20d0-\\u20f0",le="\\ufe0e\\ufe0f",se="["+ce+"]",pe="["+fe+ae+"]",he="\\ud83c[\\udffb-\\udfff]",ve="(?:"+pe+"|"+he+")",ye="[^"+ce+"]",me="(?:\\ud83c[\\udde6-\\uddff]){2}",de="[\\ud800-\\udbff][\\udc00-\\udfff]",ge="\\u200d",be=ve+"?",Se="["+le+"]?",je="(?:"+ge+"(?:"+[ye,me,de].join("|")+")"+Se+be+")*",ke=Se+be+je,we="(?:"+[ye+pe+"?",pe,me,de,se].join("|")+")",Ee=RegExp(he+"(?="+he+")|"+we+ke,"g"),xe=/^\s+|\s+$/g,Le=/^(function)?\s*[^\(]*\(\s*([^\)]*)\)/m,Oe=/,/,Ae=/(=.+)?(\s*)$/,Ie=/((\/\/.*$)|(\/\*[\s\S]*?\*\/))/gm,Te="function"==typeof setImmediate&&setImmediate,_e="object"==typeof process&&"function"==typeof process.nextTick;ct=Te?setImmediate:_e?process.nextTick:sn;var Fe=pn(ct);hn.prototype.removeLink=function(n){return n.prev?n.prev.next=n.next:this.head=n.next,n.next?n.next.prev=n.prev:this.tail=n.prev,n.prev=n.next=null,this.length-=1,n},hn.prototype.empty=hn,hn.prototype.insertAfter=function(n,t){t.prev=n,t.next=n.next,n.next?n.next.prev=t:this.tail=t,n.next=t,this.length+=1},hn.prototype.insertBefore=function(n,t){t.prev=n.prev,t.next=n,n.prev?n.prev.next=t:this.head=t,n.prev=t,this.length+=1},hn.prototype.unshift=function(n){this.head?this.insertBefore(this.head,n):vn(this,n)},hn.prototype.push=function(n){this.tail?this.insertAfter(this.tail,n):vn(this,n)},hn.prototype.shift=function(){return this.head&&this.removeLink(this.head)},hn.prototype.pop=function(){return this.tail&&this.removeLink(this.tail)};var $e,ze=M(B,1),Be=a(function(n){return a(function(t){var e=this,r=t[t.length-1];"function"==typeof r?t.pop():r=y,dn(n,t,function(n,t,r){t.apply(e,n.concat([a(function(n,t){r(n,t)})]))},function(n,t){r.apply(e,[n].concat(t))})})}),Me=a(function(n){return Be.apply(null,n.reverse())}),Ve=P(gn),qe=bn(gn),Ce=a(function(n){var t=[null].concat(n);return l(function(n,e){return e.apply(this,t)})}),De=jn(D,Sn,kn),Pe=jn(B,Sn,kn),Re=jn(ze,Sn,kn),Ue=wn("dir"),Ne=M(Tn,1),Qe=jn(D,Fn,Fn),We=jn(B,Fn,Fn),Ge=M(We,1),He=P($n),Je=U($n),Ke=M(Je,1),Xe=wn("log"),Ye=M(Bn,1/0),Ze=M(Bn,1);$e=_e?process.nextTick:Te?setImmediate:sn;var nr=pn($e),tr=Array.prototype.slice,er=P(Wn),rr=U(Wn),ur=M(rr,1),ir=jn(D,Boolean,Sn),or=jn(B,Boolean,Sn),cr=M(or,1),fr=Math.ceil,ar=Math.max,lr=M(tt,1/0),sr=M(tt,1),pr={applyEach:Gt,applyEachSeries:Kt,apply:Xt,asyncify:N,auto:K,autoInject:ln,cargo:mn,compose:Me,concat:Ve,concatSeries:qe,constant:Ce,detect:De,detectLimit:Pe,detectSeries:Re,dir:Ue,doDuring:En,doUntil:Ln,doWhilst:xn,during:On,each:In,eachLimit:Tn,eachOf:D,eachOfLimit:B,eachOfSeries:ze,eachSeries:Ne,ensureAsync:_n,every:Qe,everyLimit:We,everySeries:Ge,filter:He,filterLimit:Je,filterSeries:Ke,forever:zn,log:Xe,map:Wt,mapLimit:Ht,mapSeries:Jt,mapValues:Ye,mapValuesLimit:Bn,mapValuesSeries:Ze,memoize:Vn,nextTick:nr,parallel:Cn,parallelLimit:Dn,priorityQueue:Rn,queue:Pn,race:Un,reduce:dn,reduceRight:Nn,reflect:Qn,reflectAll:Gn,reject:er,rejectLimit:rr,rejectSeries:ur,retry:Jn,retryable:Kn,seq:Be,series:Xn,setImmediate:Fe,some:ir,someLimit:or,someSeries:cr,sortBy:Yn,timeout:Zn,times:lr,timesLimit:tt,timesSeries:sr,transform:et,unmemoize:rt,until:it,waterfall:ot,whilst:ut,all:Qe,any:ir,forEach:In,forEachSeries:Ne,forEachLimit:Tn,forEachOf:D,forEachOfSeries:ze,forEachOfLimit:B,inject:dn,foldl:dn,foldr:Nn,select:He,selectLimit:Je,selectSeries:Ke,wrapSync:N};n["default"]=pr,n.applyEach=Gt,n.applyEachSeries=Kt,n.apply=Xt,n.asyncify=N,n.auto=K,n.autoInject=ln,n.cargo=mn,n.compose=Me,n.concat=Ve,n.concatSeries=qe,n.constant=Ce,n.detect=De,n.detectLimit=Pe,n.detectSeries=Re,n.dir=Ue,n.doDuring=En,n.doUntil=Ln,n.doWhilst=xn,n.during=On,n.each=In,n.eachLimit=Tn,n.eachOf=D,n.eachOfLimit=B,n.eachOfSeries=ze,n.eachSeries=Ne,n.ensureAsync=_n,n.every=Qe,n.everyLimit=We,n.everySeries=Ge,n.filter=He,n.filterLimit=Je,n.filterSeries=Ke,n.forever=zn,n.log=Xe,n.map=Wt,n.mapLimit=Ht,n.mapSeries=Jt,n.mapValues=Ye,n.mapValuesLimit=Bn,n.mapValuesSeries=Ze,n.memoize=Vn,n.nextTick=nr,n.parallel=Cn,n.parallelLimit=Dn,n.priorityQueue=Rn,n.queue=Pn,n.race=Un,n.reduce=dn,n.reduceRight=Nn,n.reflect=Qn,n.reflectAll=Gn,n.reject=er,n.rejectLimit=rr,n.rejectSeries=ur,n.retry=Jn,n.retryable=Kn,n.seq=Be,n.series=Xn,n.setImmediate=Fe,n.some=ir,n.someLimit=or,n.someSeries=cr,n.sortBy=Yn,n.timeout=Zn,n.times=lr,n.timesLimit=tt,n.timesSeries=sr,n.transform=et,n.unmemoize=rt,n.until=it,n.waterfall=ot,n.whilst=ut,n.all=Qe,n.allLimit=We,n.allSeries=Ge,n.any=ir,n.anyLimit=or,n.anySeries=cr,n.find=De,n.findLimit=Pe,n.findSeries=Re,n.forEach=In,n.forEachSeries=Ne,n.forEachLimit=Tn,n.forEachOf=D,n.forEachOfSeries=ze,n.forEachOfLimit=B,n.inject=dn,n.foldl=dn,n.foldr=Nn,n.select=He,n.selectLimit=Je,n.selectSeries=Ke,n.wrapSync=N}); +//# sourceMappingURL=async.min.map
\ No newline at end of file |