diff options
Diffstat (limited to 'third_party/immer/extra/js/lib')
| -rw-r--r-- | third_party/immer/extra/js/lib/benchmark.js | 2811 | ||||
| -rw-r--r-- | third_party/immer/extra/js/lib/immutable.min.js | 36 | ||||
| -rw-r--r-- | third_party/immer/extra/js/lib/lodash.js | 16607 | ||||
| -rw-r--r-- | third_party/immer/extra/js/lib/mori.js | 435 | ||||
| -rw-r--r-- | third_party/immer/extra/js/lib/platform.js | 1135 |
5 files changed, 0 insertions, 21024 deletions
diff --git a/third_party/immer/extra/js/lib/benchmark.js b/third_party/immer/extra/js/lib/benchmark.js deleted file mode 100644 index 11bc2babaf..0000000000 --- a/third_party/immer/extra/js/lib/benchmark.js +++ /dev/null @@ -1,2811 +0,0 @@ -/*! - * Benchmark.js <https://benchmarkjs.com/> - * Copyright 2010-2016 Mathias Bynens <https://mths.be/> - * Based on JSLitmus.js, copyright Robert Kieffer <http://broofa.com/> - * Modified by John-David Dalton <http://allyoucanleet.com/> - * Available under MIT license <https://mths.be/mit> - */ -;(function() { - 'use strict'; - - /** Used as a safe reference for `undefined` in pre ES5 environments. */ - var undefined; - - /** Used to determine if values are of the language type Object. */ - var objectTypes = { - 'function': true, - 'object': true - }; - - /** Used as a reference to the global object. */ - var root = (objectTypes[typeof window] && window) || this; - - /** Detect free variable `define`. */ - var freeDefine = typeof define == 'function' && typeof define.amd == 'object' && define.amd && define; - - /** Detect free variable `exports`. */ - var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports; - - /** Detect free variable `module`. */ - var freeModule = objectTypes[typeof module] && module && !module.nodeType && module; - - /** Detect free variable `global` from Node.js or Browserified code and use it as `root`. */ - var freeGlobal = freeExports && freeModule && typeof global == 'object' && global; - if (freeGlobal && (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal || freeGlobal.self === freeGlobal)) { - root = freeGlobal; - } - - /** Detect free variable `require`. */ - var freeRequire = typeof require == 'function' && require; - - /** Used to assign each benchmark an incremented id. */ - var counter = 0; - - /** Detect the popular CommonJS extension `module.exports`. */ - var moduleExports = freeModule && freeModule.exports === freeExports && freeExports; - - /** Used to detect primitive types. */ - var rePrimitive = /^(?:boolean|number|string|undefined)$/; - - /** Used to make every compiled test unique. */ - var uidCounter = 0; - - /** Used to assign default `context` object properties. */ - var contextProps = [ - 'Array', 'Date', 'Function', 'Math', 'Object', 'RegExp', 'String', '_', - 'clearTimeout', 'chrome', 'chromium', 'document', 'navigator', 'phantom', - 'platform', 'process', 'runtime', 'setTimeout' - ]; - - /** Used to avoid hz of Infinity. */ - var divisors = { - '1': 4096, - '2': 512, - '3': 64, - '4': 8, - '5': 0 - }; - - /** - * T-Distribution two-tailed critical values for 95% confidence. - * For more info see http://www.itl.nist.gov/div898/handbook/eda/section3/eda3672.htm. - */ - var tTable = { - '1': 12.706, '2': 4.303, '3': 3.182, '4': 2.776, '5': 2.571, '6': 2.447, - '7': 2.365, '8': 2.306, '9': 2.262, '10': 2.228, '11': 2.201, '12': 2.179, - '13': 2.16, '14': 2.145, '15': 2.131, '16': 2.12, '17': 2.11, '18': 2.101, - '19': 2.093, '20': 2.086, '21': 2.08, '22': 2.074, '23': 2.069, '24': 2.064, - '25': 2.06, '26': 2.056, '27': 2.052, '28': 2.048, '29': 2.045, '30': 2.042, - 'infinity': 1.96 - }; - - /** - * Critical Mann-Whitney U-values for 95% confidence. - * For more info see http://www.saburchill.com/IBbiology/stats/003.html. - */ - var uTable = { - '5': [0, 1, 2], - '6': [1, 2, 3, 5], - '7': [1, 3, 5, 6, 8], - '8': [2, 4, 6, 8, 10, 13], - '9': [2, 4, 7, 10, 12, 15, 17], - '10': [3, 5, 8, 11, 14, 17, 20, 23], - '11': [3, 6, 9, 13, 16, 19, 23, 26, 30], - '12': [4, 7, 11, 14, 18, 22, 26, 29, 33, 37], - '13': [4, 8, 12, 16, 20, 24, 28, 33, 37, 41, 45], - '14': [5, 9, 13, 17, 22, 26, 31, 36, 40, 45, 50, 55], - '15': [5, 10, 14, 19, 24, 29, 34, 39, 44, 49, 54, 59, 64], - '16': [6, 11, 15, 21, 26, 31, 37, 42, 47, 53, 59, 64, 70, 75], - '17': [6, 11, 17, 22, 28, 34, 39, 45, 51, 57, 63, 67, 75, 81, 87], - '18': [7, 12, 18, 24, 30, 36, 42, 48, 55, 61, 67, 74, 80, 86, 93, 99], - '19': [7, 13, 19, 25, 32, 38, 45, 52, 58, 65, 72, 78, 85, 92, 99, 106, 113], - '20': [8, 14, 20, 27, 34, 41, 48, 55, 62, 69, 76, 83, 90, 98, 105, 112, 119, 127], - '21': [8, 15, 22, 29, 36, 43, 50, 58, 65, 73, 80, 88, 96, 103, 111, 119, 126, 134, 142], - '22': [9, 16, 23, 30, 38, 45, 53, 61, 69, 77, 85, 93, 101, 109, 117, 125, 133, 141, 150, 158], - '23': [9, 17, 24, 32, 40, 48, 56, 64, 73, 81, 89, 98, 106, 115, 123, 132, 140, 149, 157, 166, 175], - '24': [10, 17, 25, 33, 42, 50, 59, 67, 76, 85, 94, 102, 111, 120, 129, 138, 147, 156, 165, 174, 183, 192], - '25': [10, 18, 27, 35, 44, 53, 62, 71, 80, 89, 98, 107, 117, 126, 135, 145, 154, 163, 173, 182, 192, 201, 211], - '26': [11, 19, 28, 37, 46, 55, 64, 74, 83, 93, 102, 112, 122, 132, 141, 151, 161, 171, 181, 191, 200, 210, 220, 230], - '27': [11, 20, 29, 38, 48, 57, 67, 77, 87, 97, 107, 118, 125, 138, 147, 158, 168, 178, 188, 199, 209, 219, 230, 240, 250], - '28': [12, 21, 30, 40, 50, 60, 70, 80, 90, 101, 111, 122, 132, 143, 154, 164, 175, 186, 196, 207, 218, 228, 239, 250, 261, 272], - '29': [13, 22, 32, 42, 52, 62, 73, 83, 94, 105, 116, 127, 138, 149, 160, 171, 182, 193, 204, 215, 226, 238, 249, 260, 271, 282, 294], - '30': [13, 23, 33, 43, 54, 65, 76, 87, 98, 109, 120, 131, 143, 154, 166, 177, 189, 200, 212, 223, 235, 247, 258, 270, 282, 293, 305, 317] - }; - - /*--------------------------------------------------------------------------*/ - - /** - * Create a new `Benchmark` function using the given `context` object. - * - * @static - * @memberOf Benchmark - * @param {Object} [context=root] The context object. - * @returns {Function} Returns a new `Benchmark` function. - */ - function runInContext(context) { - // Exit early if unable to acquire lodash. - var _ = context && context._ || require('lodash') || root._; - if (!_) { - Benchmark.runInContext = runInContext; - return Benchmark; - } - // Avoid issues with some ES3 environments that attempt to use values, named - // after built-in constructors like `Object`, for the creation of literals. - // ES5 clears this up by stating that literals must use built-in constructors. - // See http://es5.github.io/#x11.1.5. - context = context ? _.defaults(root.Object(), context, _.pick(root, contextProps)) : root; - - /** Native constructor references. */ - var Array = context.Array, - Date = context.Date, - Function = context.Function, - Math = context.Math, - Object = context.Object, - RegExp = context.RegExp, - String = context.String; - - /** Used for `Array` and `Object` method references. */ - var arrayRef = [], - objectProto = Object.prototype; - - /** Native method shortcuts. */ - var abs = Math.abs, - clearTimeout = context.clearTimeout, - floor = Math.floor, - log = Math.log, - max = Math.max, - min = Math.min, - pow = Math.pow, - push = arrayRef.push, - setTimeout = context.setTimeout, - shift = arrayRef.shift, - slice = arrayRef.slice, - sqrt = Math.sqrt, - toString = objectProto.toString, - unshift = arrayRef.unshift; - - /** Used to avoid inclusion in Browserified bundles. */ - var req = require; - - /** Detect DOM document object. */ - var doc = isHostType(context, 'document') && context.document; - - /** Used to access Wade Simmons' Node.js `microtime` module. */ - var microtimeObject = req('microtime'); - - /** Used to access Node.js's high resolution timer. */ - var processObject = isHostType(context, 'process') && context.process; - - /** Used to prevent a `removeChild` memory leak in IE < 9. */ - var trash = doc && doc.createElement('div'); - - /** Used to integrity check compiled tests. */ - var uid = 'uid' + _.now(); - - /** Used to avoid infinite recursion when methods call each other. */ - var calledBy = {}; - - /** - * An object used to flag environments/features. - * - * @static - * @memberOf Benchmark - * @type Object - */ - var support = {}; - - (function() { - - /** - * Detect if running in a browser environment. - * - * @memberOf Benchmark.support - * @type boolean - */ - support.browser = doc && isHostType(context, 'navigator') && !isHostType(context, 'phantom'); - - /** - * Detect if the Timers API exists. - * - * @memberOf Benchmark.support - * @type boolean - */ - support.timeout = isHostType(context, 'setTimeout') && isHostType(context, 'clearTimeout'); - - /** - * Detect if function decompilation is support. - * - * @name decompilation - * @memberOf Benchmark.support - * @type boolean - */ - try { - // Safari 2.x removes commas in object literals from `Function#toString` results. - // See http://webk.it/11609 for more details. - // Firefox 3.6 and Opera 9.25 strip grouping parentheses from `Function#toString` results. - // See http://bugzil.la/559438 for more details. - support.decompilation = Function( - ('return (' + (function(x) { return { 'x': '' + (1 + x) + '', 'y': 0 }; }) + ')') - // Avoid issues with code added by Istanbul. - .replace(/__cov__[^;]+;/g, '') - )()(0).x === '1'; - } catch(e) { - support.decompilation = false; - } - }()); - - /** - * Timer object used by `clock()` and `Deferred#resolve`. - * - * @private - * @type Object - */ - var timer = { - - /** - * The timer namespace object or constructor. - * - * @private - * @memberOf timer - * @type {Function|Object} - */ - 'ns': Date, - - /** - * Starts the deferred timer. - * - * @private - * @memberOf timer - * @param {Object} deferred The deferred instance. - */ - 'start': null, // Lazy defined in `clock()`. - - /** - * Stops the deferred timer. - * - * @private - * @memberOf timer - * @param {Object} deferred The deferred instance. - */ - 'stop': null // Lazy defined in `clock()`. - }; - - /*------------------------------------------------------------------------*/ - - /** - * The Benchmark constructor. - * - * Note: The Benchmark constructor exposes a handful of lodash methods to - * make working with arrays, collections, and objects easier. The lodash - * methods are: - * [`each/forEach`](https://lodash.com/docs#forEach), [`forOwn`](https://lodash.com/docs#forOwn), - * [`has`](https://lodash.com/docs#has), [`indexOf`](https://lodash.com/docs#indexOf), - * [`map`](https://lodash.com/docs#map), and [`reduce`](https://lodash.com/docs#reduce) - * - * @constructor - * @param {string} name A name to identify the benchmark. - * @param {Function|string} fn The test to benchmark. - * @param {Object} [options={}] Options object. - * @example - * - * // basic usage (the `new` operator is optional) - * var bench = new Benchmark(fn); - * - * // or using a name first - * var bench = new Benchmark('foo', fn); - * - * // or with options - * var bench = new Benchmark('foo', fn, { - * - * // displayed by `Benchmark#toString` if `name` is not available - * 'id': 'xyz', - * - * // called when the benchmark starts running - * 'onStart': onStart, - * - * // called after each run cycle - * 'onCycle': onCycle, - * - * // called when aborted - * 'onAbort': onAbort, - * - * // called when a test errors - * 'onError': onError, - * - * // called when reset - * 'onReset': onReset, - * - * // called when the benchmark completes running - * 'onComplete': onComplete, - * - * // compiled/called before the test loop - * 'setup': setup, - * - * // compiled/called after the test loop - * 'teardown': teardown - * }); - * - * // or name and options - * var bench = new Benchmark('foo', { - * - * // a flag to indicate the benchmark is deferred - * 'defer': true, - * - * // benchmark test function - * 'fn': function(deferred) { - * // call `Deferred#resolve` when the deferred test is finished - * deferred.resolve(); - * } - * }); - * - * // or options only - * var bench = new Benchmark({ - * - * // benchmark name - * 'name': 'foo', - * - * // benchmark test as a string - * 'fn': '[1,2,3,4].sort()' - * }); - * - * // a test's `this` binding is set to the benchmark instance - * var bench = new Benchmark('foo', function() { - * 'My name is '.concat(this.name); // "My name is foo" - * }); - */ - function Benchmark(name, fn, options) { - var bench = this; - - // Allow instance creation without the `new` operator. - if (!(bench instanceof Benchmark)) { - return new Benchmark(name, fn, options); - } - // Juggle arguments. - if (_.isPlainObject(name)) { - // 1 argument (options). - options = name; - } - else if (_.isFunction(name)) { - // 2 arguments (fn, options). - options = fn; - fn = name; - } - else if (_.isPlainObject(fn)) { - // 2 arguments (name, options). - options = fn; - fn = null; - bench.name = name; - } - else { - // 3 arguments (name, fn [, options]). - bench.name = name; - } - setOptions(bench, options); - - bench.id || (bench.id = ++counter); - bench.fn == null && (bench.fn = fn); - - bench.stats = cloneDeep(bench.stats); - bench.times = cloneDeep(bench.times); - } - - /** - * The Deferred constructor. - * - * @constructor - * @memberOf Benchmark - * @param {Object} clone The cloned benchmark instance. - */ - function Deferred(clone) { - var deferred = this; - if (!(deferred instanceof Deferred)) { - return new Deferred(clone); - } - deferred.benchmark = clone; - clock(deferred); - } - - /** - * The Event constructor. - * - * @constructor - * @memberOf Benchmark - * @param {Object|string} type The event type. - */ - function Event(type) { - var event = this; - if (type instanceof Event) { - return type; - } - return (event instanceof Event) - ? _.assign(event, { 'timeStamp': _.now() }, typeof type == 'string' ? { 'type': type } : type) - : new Event(type); - } - - /** - * The Suite constructor. - * - * Note: Each Suite instance has a handful of wrapped lodash methods to - * make working with Suites easier. The wrapped lodash methods are: - * [`each/forEach`](https://lodash.com/docs#forEach), [`indexOf`](https://lodash.com/docs#indexOf), - * [`map`](https://lodash.com/docs#map), and [`reduce`](https://lodash.com/docs#reduce) - * - * @constructor - * @memberOf Benchmark - * @param {string} name A name to identify the suite. - * @param {Object} [options={}] Options object. - * @example - * - * // basic usage (the `new` operator is optional) - * var suite = new Benchmark.Suite; - * - * // or using a name first - * var suite = new Benchmark.Suite('foo'); - * - * // or with options - * var suite = new Benchmark.Suite('foo', { - * - * // called when the suite starts running - * 'onStart': onStart, - * - * // called between running benchmarks - * 'onCycle': onCycle, - * - * // called when aborted - * 'onAbort': onAbort, - * - * // called when a test errors - * 'onError': onError, - * - * // called when reset - * 'onReset': onReset, - * - * // called when the suite completes running - * 'onComplete': onComplete - * }); - */ - function Suite(name, options) { - var suite = this; - - // Allow instance creation without the `new` operator. - if (!(suite instanceof Suite)) { - return new Suite(name, options); - } - // Juggle arguments. - if (_.isPlainObject(name)) { - // 1 argument (options). - options = name; - } else { - // 2 arguments (name [, options]). - suite.name = name; - } - setOptions(suite, options); - } - - /*------------------------------------------------------------------------*/ - - /** - * A specialized version of `_.cloneDeep` which only clones arrays and plain - * objects assigning all other values by reference. - * - * @private - * @param {*} value The value to clone. - * @returns {*} The cloned value. - */ - var cloneDeep = _.partial(_.cloneDeepWith, _, function(value) { - // Only clone primitives, arrays, and plain objects. - return (_.isObject(value) && !_.isArray(value) && !_.isPlainObject(value)) - ? value - : undefined; - }); - - /** - * Creates a function from the given arguments string and body. - * - * @private - * @param {string} args The comma separated function arguments. - * @param {string} body The function body. - * @returns {Function} The new function. - */ - function createFunction() { - // Lazy define. - createFunction = function(args, body) { - var result, - anchor = freeDefine ? freeDefine.amd : Benchmark, - prop = uid + 'createFunction'; - - runScript((freeDefine ? 'define.amd.' : 'Benchmark.') + prop + '=function(' + args + '){' + body + '}'); - result = anchor[prop]; - delete anchor[prop]; - return result; - }; - // Fix JaegerMonkey bug. - // For more information see http://bugzil.la/639720. - createFunction = support.browser && (createFunction('', 'return"' + uid + '"') || _.noop)() == uid ? createFunction : Function; - return createFunction.apply(null, arguments); - } - - /** - * Delay the execution of a function based on the benchmark's `delay` property. - * - * @private - * @param {Object} bench The benchmark instance. - * @param {Object} fn The function to execute. - */ - function delay(bench, fn) { - bench._timerId = _.delay(fn, bench.delay * 1e3); - } - - /** - * Destroys the given element. - * - * @private - * @param {Element} element The element to destroy. - */ - function destroyElement(element) { - trash.appendChild(element); - trash.innerHTML = ''; - } - - /** - * Gets the name of the first argument from a function's source. - * - * @private - * @param {Function} fn The function. - * @returns {string} The argument name. - */ - function getFirstArgument(fn) { - return (!_.has(fn, 'toString') && - (/^[\s(]*function[^(]*\(([^\s,)]+)/.exec(fn) || 0)[1]) || ''; - } - - /** - * Computes the arithmetic mean of a sample. - * - * @private - * @param {Array} sample The sample. - * @returns {number} The mean. - */ - function getMean(sample) { - return (_.reduce(sample, function(sum, x) { - return sum + x; - }) / sample.length) || 0; - } - - /** - * Gets the source code of a function. - * - * @private - * @param {Function} fn The function. - * @returns {string} The function's source code. - */ - function getSource(fn) { - var result = ''; - if (isStringable(fn)) { - result = String(fn); - } else if (support.decompilation) { - // Escape the `{` for Firefox 1. - result = _.result(/^[^{]+\{([\s\S]*)\}\s*$/.exec(fn), 1); - } - // Trim string. - result = (result || '').replace(/^\s+|\s+$/g, ''); - - // Detect strings containing only the "use strict" directive. - return /^(?:\/\*+[\w\W]*?\*\/|\/\/.*?[\n\r\u2028\u2029]|\s)*(["'])use strict\1;?$/.test(result) - ? '' - : result; - } - - /** - * Checks if an object is of the specified class. - * - * @private - * @param {*} value The value to check. - * @param {string} name The name of the class. - * @returns {boolean} Returns `true` if the value is of the specified class, else `false`. - */ - function isClassOf(value, name) { - return value != null && toString.call(value) == '[object ' + name + ']'; - } - - /** - * Host objects can return type values that are different from their actual - * data type. The objects we are concerned with usually return non-primitive - * types of "object", "function", or "unknown". - * - * @private - * @param {*} object The owner of the property. - * @param {string} property The property to check. - * @returns {boolean} Returns `true` if the property value is a non-primitive, else `false`. - */ - function isHostType(object, property) { - if (object == null) { - return false; - } - var type = typeof object[property]; - return !rePrimitive.test(type) && (type != 'object' || !!object[property]); - } - - /** - * Checks if a value can be safely coerced to a string. - * - * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if the value can be coerced, else `false`. - */ - function isStringable(value) { - return _.isString(value) || (_.has(value, 'toString') && _.isFunction(value.toString)); - } - - /** - * A wrapper around `require` to suppress `module missing` errors. - * - * @private - * @param {string} id The module id. - * @returns {*} The exported module or `null`. - */ - function require(id) { - try { - var result = freeExports && freeRequire(id); - } catch(e) {} - return result || null; - } - - /** - * Runs a snippet of JavaScript via script injection. - * - * @private - * @param {string} code The code to run. - */ - function runScript(code) { - var anchor = freeDefine ? define.amd : Benchmark, - script = doc.createElement('script'), - sibling = doc.getElementsByTagName('script')[0], - parent = sibling.parentNode, - prop = uid + 'runScript', - prefix = '(' + (freeDefine ? 'define.amd.' : 'Benchmark.') + prop + '||function(){})();'; - - // Firefox 2.0.0.2 cannot use script injection as intended because it executes - // asynchronously, but that's OK because script injection is only used to avoid - // the previously commented JaegerMonkey bug. - try { - // Remove the inserted script *before* running the code to avoid differences - // in the expected script element count/order of the document. - script.appendChild(doc.createTextNode(prefix + code)); - anchor[prop] = function() { destroyElement(script); }; - } catch(e) { - parent = parent.cloneNode(false); - sibling = null; - script.text = code; - } - parent.insertBefore(script, sibling); - delete anchor[prop]; - } - - /** - * A helper function for setting options/event handlers. - * - * @private - * @param {Object} object The benchmark or suite instance. - * @param {Object} [options={}] Options object. - */ - function setOptions(object, options) { - options = object.options = _.assign({}, cloneDeep(object.constructor.options), cloneDeep(options)); - - _.forOwn(options, function(value, key) { - if (value != null) { - // Add event listeners. - if (/^on[A-Z]/.test(key)) { - _.each(key.split(' '), function(key) { - object.on(key.slice(2).toLowerCase(), value); - }); - } else if (!_.has(object, key)) { - object[key] = cloneDeep(value); - } - } - }); - } - - /*------------------------------------------------------------------------*/ - - /** - * Handles cycling/completing the deferred benchmark. - * - * @memberOf Benchmark.Deferred - */ - function resolve() { - var deferred = this, - clone = deferred.benchmark, - bench = clone._original; - - if (bench.aborted) { - // cycle() -> clone cycle/complete event -> compute()'s invoked bench.run() cycle/complete. - deferred.teardown(); - clone.running = false; - cycle(deferred); - } - else if (++deferred.cycles < clone.count) { - clone.compiled.call(deferred, context, timer); - } - else { - timer.stop(deferred); - deferred.teardown(); - delay(clone, function() { cycle(deferred); }); - } - } - - /*------------------------------------------------------------------------*/ - - /** - * A generic `Array#filter` like method. - * - * @static - * @memberOf Benchmark - * @param {Array} array The array to iterate over. - * @param {Function|string} callback The function/alias called per iteration. - * @returns {Array} A new array of values that passed callback filter. - * @example - * - * // get odd numbers - * Benchmark.filter([1, 2, 3, 4, 5], function(n) { - * return n % 2; - * }); // -> [1, 3, 5]; - * - * // get fastest benchmarks - * Benchmark.filter(benches, 'fastest'); - * - * // get slowest benchmarks - * Benchmark.filter(benches, 'slowest'); - * - * // get benchmarks that completed without erroring - * Benchmark.filter(benches, 'successful'); - */ - function filter(array, callback) { - if (callback === 'successful') { - // Callback to exclude those that are errored, unrun, or have hz of Infinity. - callback = function(bench) { - return bench.cycles && _.isFinite(bench.hz) && !bench.error; - }; - } - else if (callback === 'fastest' || callback === 'slowest') { - // Get successful, sort by period + margin of error, and filter fastest/slowest. - var result = filter(array, 'successful').sort(function(a, b) { - a = a.stats; b = b.stats; - return (a.mean + a.moe > b.mean + b.moe ? 1 : -1) * (callback === 'fastest' ? 1 : -1); - }); - - return _.filter(result, function(bench) { - return result[0].compare(bench) == 0; - }); - } - return _.filter(array, callback); - } - - /** - * Converts a number to a more readable comma-separated string representation. - * - * @static - * @memberOf Benchmark - * @param {number} number The number to convert. - * @returns {string} The more readable string representation. - */ - function formatNumber(number) { - number = String(number).split('.'); - return number[0].replace(/(?=(?:\d{3})+$)(?!\b)/g, ',') + - (number[1] ? '.' + number[1] : ''); - } - - /** - * Invokes a method on all items in an array. - * - * @static - * @memberOf Benchmark - * @param {Array} benches Array of benchmarks to iterate over. - * @param {Object|string} name The name of the method to invoke OR options object. - * @param {...*} [args] Arguments to invoke the method with. - * @returns {Array} A new array of values returned from each method invoked. - * @example - * - * // invoke `reset` on all benchmarks - * Benchmark.invoke(benches, 'reset'); - * - * // invoke `emit` with arguments - * Benchmark.invoke(benches, 'emit', 'complete', listener); - * - * // invoke `run(true)`, treat benchmarks as a queue, and register invoke callbacks - * Benchmark.invoke(benches, { - * - * // invoke the `run` method - * 'name': 'run', - * - * // pass a single argument - * 'args': true, - * - * // treat as queue, removing benchmarks from front of `benches` until empty - * 'queued': true, - * - * // called before any benchmarks have been invoked. - * 'onStart': onStart, - * - * // called between invoking benchmarks - * 'onCycle': onCycle, - * - * // called after all benchmarks have been invoked. - * 'onComplete': onComplete - * }); - */ - function invoke(benches, name) { - var args, - bench, - queued, - index = -1, - eventProps = { 'currentTarget': benches }, - options = { 'onStart': _.noop, 'onCycle': _.noop, 'onComplete': _.noop }, - result = _.toArray(benches); - - /** - * Invokes the method of the current object and if synchronous, fetches the next. - */ - function execute() { - var listeners, - async = isAsync(bench); - - if (async) { - // Use `getNext` as the first listener. - bench.on('complete', getNext); - listeners = bench.events.complete; - listeners.splice(0, 0, listeners.pop()); - } - // Execute method. - result[index] = _.isFunction(bench && bench[name]) ? bench[name].apply(bench, args) : undefined; - // If synchronous return `true` until finished. - return !async && getNext(); - } - - /** - * Fetches the next bench or executes `onComplete` callback. - */ - function getNext(event) { - var cycleEvent, - last = bench, - async = isAsync(last); - - if (async) { - last.off('complete', getNext); - last.emit('complete'); - } - // Emit "cycle" event. - eventProps.type = 'cycle'; - eventProps.target = last; - cycleEvent = Event(eventProps); - options.onCycle.call(benches, cycleEvent); - - // Choose next benchmark if not exiting early. - if (!cycleEvent.aborted && raiseIndex() !== false) { - bench = queued ? benches[0] : result[index]; - if (isAsync(bench)) { - delay(bench, execute); - } - else if (async) { - // Resume execution if previously asynchronous but now synchronous. - while (execute()) {} - } - else { - // Continue synchronous execution. - return true; - } - } else { - // Emit "complete" event. - eventProps.type = 'complete'; - options.onComplete.call(benches, Event(eventProps)); - } - // When used as a listener `event.aborted = true` will cancel the rest of - // the "complete" listeners because they were already called above and when - // used as part of `getNext` the `return false` will exit the execution while-loop. - if (event) { - event.aborted = true; - } else { - return false; - } - } - - /** - * Checks if invoking `Benchmark#run` with asynchronous cycles. - */ - function isAsync(object) { - // Avoid using `instanceof` here because of IE memory leak issues with host objects. - var async = args[0] && args[0].async; - return name == 'run' && (object instanceof Benchmark) && - ((async == null ? object.options.async : async) && support.timeout || object.defer); - } - - /** - * Raises `index` to the next defined index or returns `false`. - */ - function raiseIndex() { - index++; - - // If queued remove the previous bench. - if (queued && index > 0) { - shift.call(benches); - } - // If we reached the last index then return `false`. - return (queued ? benches.length : index < result.length) - ? index - : (index = false); - } - // Juggle arguments. - if (_.isString(name)) { - // 2 arguments (array, name). - args = slice.call(arguments, 2); - } else { - // 2 arguments (array, options). - options = _.assign(options, name); - name = options.name; - args = _.isArray(args = 'args' in options ? options.args : []) ? args : [args]; - queued = options.queued; - } - // Start iterating over the array. - if (raiseIndex() !== false) { - // Emit "start" event. - bench = result[index]; - eventProps.type = 'start'; - eventProps.target = bench; - options.onStart.call(benches, Event(eventProps)); - - // End early if the suite was aborted in an "onStart" listener. - if (name == 'run' && (benches instanceof Suite) && benches.aborted) { - // Emit "cycle" event. - eventProps.type = 'cycle'; - options.onCycle.call(benches, Event(eventProps)); - // Emit "complete" event. - eventProps.type = 'complete'; - options.onComplete.call(benches, Event(eventProps)); - } - // Start method execution. - else { - if (isAsync(bench)) { - delay(bench, execute); - } else { - while (execute()) {} - } - } - } - return result; - } - - /** - * Creates a string of joined array values or object key-value pairs. - * - * @static - * @memberOf Benchmark - * @param {Array|Object} object The object to operate on. - * @param {string} [separator1=','] The separator used between key-value pairs. - * @param {string} [separator2=': '] The separator used between keys and values. - * @returns {string} The joined result. - */ - function join(object, separator1, separator2) { - var result = [], - length = (object = Object(object)).length, - arrayLike = length === length >>> 0; - - separator2 || (separator2 = ': '); - _.each(object, function(value, key) { - result.push(arrayLike ? value : key + separator2 + value); - }); - return result.join(separator1 || ','); - } - - /*------------------------------------------------------------------------*/ - - /** - * Aborts all benchmarks in the suite. - * - * @name abort - * @memberOf Benchmark.Suite - * @returns {Object} The suite instance. - */ - function abortSuite() { - var event, - suite = this, - resetting = calledBy.resetSuite; - - if (suite.running) { - event = Event('abort'); - suite.emit(event); - if (!event.cancelled || resetting) { - // Avoid infinite recursion. - calledBy.abortSuite = true; - suite.reset(); - delete calledBy.abortSuite; - - if (!resetting) { - suite.aborted = true; - invoke(suite, 'abort'); - } - } - } - return suite; - } - - /** - * Adds a test to the benchmark suite. - * - * @memberOf Benchmark.Suite - * @param {string} name A name to identify the benchmark. - * @param {Function|string} fn The test to benchmark. - * @param {Object} [options={}] Options object. - * @returns {Object} The suite instance. - * @example - * - * // basic usage - * suite.add(fn); - * - * // or using a name first - * suite.add('foo', fn); - * - * // or with options - * suite.add('foo', fn, { - * 'onCycle': onCycle, - * 'onComplete': onComplete - * }); - * - * // or name and options - * suite.add('foo', { - * 'fn': fn, - * 'onCycle': onCycle, - * 'onComplete': onComplete - * }); - * - * // or options only - * suite.add({ - * 'name': 'foo', - * 'fn': fn, - * 'onCycle': onCycle, - * 'onComplete': onComplete - * }); - */ - function add(name, fn, options) { - var suite = this, - bench = new Benchmark(name, fn, options), - event = Event({ 'type': 'add', 'target': bench }); - - if (suite.emit(event), !event.cancelled) { - suite.push(bench); - } - return suite; - } - - /** - * Creates a new suite with cloned benchmarks. - * - * @name clone - * @memberOf Benchmark.Suite - * @param {Object} options Options object to overwrite cloned options. - * @returns {Object} The new suite instance. - */ - function cloneSuite(options) { - var suite = this, - result = new suite.constructor(_.assign({}, suite.options, options)); - - // Copy own properties. - _.forOwn(suite, function(value, key) { - if (!_.has(result, key)) { - result[key] = value && _.isFunction(value.clone) - ? value.clone() - : cloneDeep(value); - } - }); - return result; - } - - /** - * An `Array#filter` like method. - * - * @name filter - * @memberOf Benchmark.Suite - * @param {Function|string} callback The function/alias called per iteration. - * @returns {Object} A new suite of benchmarks that passed callback filter. - */ - function filterSuite(callback) { - var suite = this, - result = new suite.constructor(suite.options); - - result.push.apply(result, filter(suite, callback)); - return result; - } - - /** - * Resets all benchmarks in the suite. - * - * @name reset - * @memberOf Benchmark.Suite - * @returns {Object} The suite instance. - */ - function resetSuite() { - var event, - suite = this, - aborting = calledBy.abortSuite; - - if (suite.running && !aborting) { - // No worries, `resetSuite()` is called within `abortSuite()`. - calledBy.resetSuite = true; - suite.abort(); - delete calledBy.resetSuite; - } - // Reset if the state has changed. - else if ((suite.aborted || suite.running) && - (suite.emit(event = Event('reset')), !event.cancelled)) { - suite.aborted = suite.running = false; - if (!aborting) { - invoke(suite, 'reset'); - } - } - return suite; - } - - /** - * Runs the suite. - * - * @name run - * @memberOf Benchmark.Suite - * @param {Object} [options={}] Options object. - * @returns {Object} The suite instance. - * @example - * - * // basic usage - * suite.run(); - * - * // or with options - * suite.run({ 'async': true, 'queued': true }); - */ - function runSuite(options) { - var suite = this; - - suite.reset(); - suite.running = true; - options || (options = {}); - - invoke(suite, { - 'name': 'run', - 'args': options, - 'queued': options.queued, - 'onStart': function(event) { - suite.emit(event); - }, - 'onCycle': function(event) { - var bench = event.target; - if (bench.error) { - suite.emit({ 'type': 'error', 'target': bench }); - } - suite.emit(event); - event.aborted = suite.aborted; - }, - 'onComplete': function(event) { - suite.running = false; - suite.emit(event); - } - }); - return suite; - } - - /*------------------------------------------------------------------------*/ - - /** - * Executes all registered listeners of the specified event type. - * - * @memberOf Benchmark, Benchmark.Suite - * @param {Object|string} type The event type or object. - * @param {...*} [args] Arguments to invoke the listener with. - * @returns {*} Returns the return value of the last listener executed. - */ - function emit(type) { - var listeners, - object = this, - event = Event(type), - events = object.events, - args = (arguments[0] = event, arguments); - - event.currentTarget || (event.currentTarget = object); - event.target || (event.target = object); - delete event.result; - - if (events && (listeners = _.has(events, event.type) && events[event.type])) { - _.each(listeners.slice(), function(listener) { - if ((event.result = listener.apply(object, args)) === false) { - event.cancelled = true; - } - return !event.aborted; - }); - } - return event.result; - } - - /** - * Returns an array of event listeners for a given type that can be manipulated - * to add or remove listeners. - * - * @memberOf Benchmark, Benchmark.Suite - * @param {string} type The event type. - * @returns {Array} The listeners array. - */ - function listeners(type) { - var object = this, - events = object.events || (object.events = {}); - - return _.has(events, type) ? events[type] : (events[type] = []); - } - - /** - * Unregisters a listener for the specified event type(s), - * or unregisters all listeners for the specified event type(s), - * or unregisters all listeners for all event types. - * - * @memberOf Benchmark, Benchmark.Suite - * @param {string} [type] The event type. - * @param {Function} [listener] The function to unregister. - * @returns {Object} The current instance. - * @example - * - * // unregister a listener for an event type - * bench.off('cycle', listener); - * - * // unregister a listener for multiple event types - * bench.off('start cycle', listener); - * - * // unregister all listeners for an event type - * bench.off('cycle'); - * - * // unregister all listeners for multiple event types - * bench.off('start cycle complete'); - * - * // unregister all listeners for all event types - * bench.off(); - */ - function off(type, listener) { - var object = this, - events = object.events; - - if (!events) { - return object; - } - _.each(type ? type.split(' ') : events, function(listeners, type) { - var index; - if (typeof listeners == 'string') { - type = listeners; - listeners = _.has(events, type) && events[type]; - } - if (listeners) { - if (listener) { - index = _.indexOf(listeners, listener); - if (index > -1) { - listeners.splice(index, 1); - } - } else { - listeners.length = 0; - } - } - }); - return object; - } - - /** - * Registers a listener for the specified event type(s). - * - * @memberOf Benchmark, Benchmark.Suite - * @param {string} type The event type. - * @param {Function} listener The function to register. - * @returns {Object} The current instance. - * @example - * - * // register a listener for an event type - * bench.on('cycle', listener); - * - * // register a listener for multiple event types - * bench.on('start cycle', listener); - */ - function on(type, listener) { - var object = this, - events = object.events || (object.events = {}); - - _.each(type.split(' '), function(type) { - (_.has(events, type) - ? events[type] - : (events[type] = []) - ).push(listener); - }); - return object; - } - - /*------------------------------------------------------------------------*/ - - /** - * Aborts the benchmark without recording times. - * - * @memberOf Benchmark - * @returns {Object} The benchmark instance. - */ - function abort() { - var event, - bench = this, - resetting = calledBy.reset; - - if (bench.running) { - event = Event('abort'); - bench.emit(event); - if (!event.cancelled || resetting) { - // Avoid infinite recursion. - calledBy.abort = true; - bench.reset(); - delete calledBy.abort; - - if (support.timeout) { - clearTimeout(bench._timerId); - delete bench._timerId; - } - if (!resetting) { - bench.aborted = true; - bench.running = false; - } - } - } - return bench; - } - - /** - * Creates a new benchmark using the same test and options. - * - * @memberOf Benchmark - * @param {Object} options Options object to overwrite cloned options. - * @returns {Object} The new benchmark instance. - * @example - * - * var bizarro = bench.clone({ - * 'name': 'doppelganger' - * }); - */ - function clone(options) { - var bench = this, - result = new bench.constructor(_.assign({}, bench, options)); - - // Correct the `options` object. - result.options = _.assign({}, cloneDeep(bench.options), cloneDeep(options)); - - // Copy own custom properties. - _.forOwn(bench, function(value, key) { - if (!_.has(result, key)) { - result[key] = cloneDeep(value); - } - }); - - return result; - } - - /** - * Determines if a benchmark is faster than another. - * - * @memberOf Benchmark - * @param {Object} other The benchmark to compare. - * @returns {number} Returns `-1` if slower, `1` if faster, and `0` if indeterminate. - */ - function compare(other) { - var bench = this; - - // Exit early if comparing the same benchmark. - if (bench == other) { - return 0; - } - var critical, - zStat, - sample1 = bench.stats.sample, - sample2 = other.stats.sample, - size1 = sample1.length, - size2 = sample2.length, - maxSize = max(size1, size2), - minSize = min(size1, size2), - u1 = getU(sample1, sample2), - u2 = getU(sample2, sample1), - u = min(u1, u2); - - function getScore(xA, sampleB) { - return _.reduce(sampleB, function(total, xB) { - return total + (xB > xA ? 0 : xB < xA ? 1 : 0.5); - }, 0); - } - - function getU(sampleA, sampleB) { - return _.reduce(sampleA, function(total, xA) { - return total + getScore(xA, sampleB); - }, 0); - } - - function getZ(u) { - return (u - ((size1 * size2) / 2)) / sqrt((size1 * size2 * (size1 + size2 + 1)) / 12); - } - // Reject the null hypothesis the two samples come from the - // same population (i.e. have the same median) if... - if (size1 + size2 > 30) { - // ...the z-stat is greater than 1.96 or less than -1.96 - // http://www.statisticslectures.com/topics/mannwhitneyu/ - zStat = getZ(u); - return abs(zStat) > 1.96 ? (u == u1 ? 1 : -1) : 0; - } - // ...the U value is less than or equal the critical U value. - critical = maxSize < 5 || minSize < 3 ? 0 : uTable[maxSize][minSize - 3]; - return u <= critical ? (u == u1 ? 1 : -1) : 0; - } - - /** - * Reset properties and abort if running. - * - * @memberOf Benchmark - * @returns {Object} The benchmark instance. - */ - function reset() { - var bench = this; - if (bench.running && !calledBy.abort) { - // No worries, `reset()` is called within `abort()`. - calledBy.reset = true; - bench.abort(); - delete calledBy.reset; - return bench; - } - var event, - index = 0, - changes = [], - queue = []; - - // A non-recursive solution to check if properties have changed. - // For more information see http://www.jslab.dk/articles/non.recursive.preorder.traversal.part4. - var data = { - 'destination': bench, - 'source': _.assign({}, cloneDeep(bench.constructor.prototype), cloneDeep(bench.options)) - }; - - do { - _.forOwn(data.source, function(value, key) { - var changed, - destination = data.destination, - currValue = destination[key]; - - // Skip pseudo private properties like `_timerId` which could be a - // Java object in environments like RingoJS. - if (key.charAt(0) == '_') { - return; - } - if (value && typeof value == 'object') { - if (_.isArray(value)) { - // Check if an array value has changed to a non-array value. - if (!_.isArray(currValue)) { - changed = currValue = []; - } - // Check if an array has changed its length. - if (currValue.length != value.length) { - changed = currValue = currValue.slice(0, value.length); - currValue.length = value.length; - } - } - // Check if an object has changed to a non-object value. - else if (!currValue || typeof currValue != 'object') { - changed = currValue = {}; - } - // Register a changed object. - if (changed) { - changes.push({ 'destination': destination, 'key': key, 'value': currValue }); - } - queue.push({ 'destination': currValue, 'source': value }); - } - // Register a changed primitive. - else if (value !== currValue && !(value == null || _.isFunction(value))) { - changes.push({ 'destination': destination, 'key': key, 'value': value }); - } - }); - } - while ((data = queue[index++])); - - // If changed emit the `reset` event and if it isn't cancelled reset the benchmark. - if (changes.length && (bench.emit(event = Event('reset')), !event.cancelled)) { - _.each(changes, function(data) { - data.destination[data.key] = data.value; - }); - } - return bench; - } - - /** - * Displays relevant benchmark information when coerced to a string. - * - * @name toString - * @memberOf Benchmark - * @returns {string} A string representation of the benchmark instance. - */ - function toStringBench() { - var bench = this, - error = bench.error, - hz = bench.hz, - id = bench.id, - stats = bench.stats, - size = stats.sample.length, - pm = '\xb1', - result = bench.name || (_.isNaN(id) ? id : '<Test #' + id + '>'); - - if (error) { - result += ': ' + join(error); - } else { - result += ' x ' + formatNumber(hz.toFixed(hz < 100 ? 2 : 0)) + ' ops/sec ' + pm + - stats.rme.toFixed(2) + '% (' + size + ' run' + (size == 1 ? '' : 's') + ' sampled)'; - } - return result; - } - - /*------------------------------------------------------------------------*/ - - /** - * Clocks the time taken to execute a test per cycle (secs). - * - * @private - * @param {Object} bench The benchmark instance. - * @returns {number} The time taken. - */ - function clock() { - var options = Benchmark.options, - templateData = {}, - timers = [{ 'ns': timer.ns, 'res': max(0.0015, getRes('ms')), 'unit': 'ms' }]; - - // Lazy define for hi-res timers. - clock = function(clone) { - var deferred; - - if (clone instanceof Deferred) { - deferred = clone; - clone = deferred.benchmark; - } - var bench = clone._original, - stringable = isStringable(bench.fn), - count = bench.count = clone.count, - decompilable = stringable || (support.decompilation && (clone.setup !== _.noop || clone.teardown !== _.noop)), - id = bench.id, - name = bench.name || (typeof id == 'number' ? '<Test #' + id + '>' : id), - result = 0; - - // Init `minTime` if needed. - clone.minTime = bench.minTime || (bench.minTime = bench.options.minTime = options.minTime); - - // Compile in setup/teardown functions and the test loop. - // Create a new compiled test, instead of using the cached `bench.compiled`, - // to avoid potential engine optimizations enabled over the life of the test. - var funcBody = deferred - ? 'var d#=this,${fnArg}=d#,m#=d#.benchmark._original,f#=m#.fn,su#=m#.setup,td#=m#.teardown;' + - // When `deferred.cycles` is `0` then... - 'if(!d#.cycles){' + - // set `deferred.fn`, - 'd#.fn=function(){var ${fnArg}=d#;if(typeof f#=="function"){try{${fn}\n}catch(e#){f#(d#)}}else{${fn}\n}};' + - // set `deferred.teardown`, - 'd#.teardown=function(){d#.cycles=0;if(typeof td#=="function"){try{${teardown}\n}catch(e#){td#()}}else{${teardown}\n}};' + - // execute the benchmark's `setup`, - 'if(typeof su#=="function"){try{${setup}\n}catch(e#){su#()}}else{${setup}\n};' + - // start timer, - 't#.start(d#);' + - // and then execute `deferred.fn` and return a dummy object. - '}d#.fn();return{uid:"${uid}"}' - - : 'var r#,s#,m#=this,f#=m#.fn,i#=m#.count,n#=t#.ns;${setup}\n${begin};' + - 'while(i#--){${fn}\n}${end};${teardown}\nreturn{elapsed:r#,uid:"${uid}"}'; - - var compiled = bench.compiled = clone.compiled = createCompiled(bench, decompilable, deferred, funcBody), - isEmpty = !(templateData.fn || stringable); - - try { - if (isEmpty) { - // Firefox may remove dead code from `Function#toString` results. - // For more information see http://bugzil.la/536085. - throw new Error('The test "' + name + '" is empty. This may be the result of dead code removal.'); - } - else if (!deferred) { - // Pretest to determine if compiled code exits early, usually by a - // rogue `return` statement, by checking for a return object with the uid. - bench.count = 1; - compiled = decompilable && (compiled.call(bench, context, timer) || {}).uid == templateData.uid && compiled; - bench.count = count; - } - } catch(e) { - compiled = null; - clone.error = e || new Error(String(e)); - bench.count = count; - } - // Fallback when a test exits early or errors during pretest. - if (!compiled && !deferred && !isEmpty) { - funcBody = ( - stringable || (decompilable && !clone.error) - ? 'function f#(){${fn}\n}var r#,s#,m#=this,i#=m#.count' - : 'var r#,s#,m#=this,f#=m#.fn,i#=m#.count' - ) + - ',n#=t#.ns;${setup}\n${begin};m#.f#=f#;while(i#--){m#.f#()}${end};' + - 'delete m#.f#;${teardown}\nreturn{elapsed:r#}'; - - compiled = createCompiled(bench, decompilable, deferred, funcBody); - - try { - // Pretest one more time to check for errors. - bench.count = 1; - compiled.call(bench, context, timer); - bench.count = count; - delete clone.error; - } - catch(e) { - bench.count = count; - if (!clone.error) { - clone.error = e || new Error(String(e)); - } - } - } - // If no errors run the full test loop. - if (!clone.error) { - compiled = bench.compiled = clone.compiled = createCompiled(bench, decompilable, deferred, funcBody); - result = compiled.call(deferred || bench, context, timer).elapsed; - } - return result; - }; - - /*----------------------------------------------------------------------*/ - - /** - * Creates a compiled function from the given function `body`. - */ - function createCompiled(bench, decompilable, deferred, body) { - var fn = bench.fn, - fnArg = deferred ? getFirstArgument(fn) || 'deferred' : ''; - - templateData.uid = uid + uidCounter++; - - _.assign(templateData, { - 'setup': decompilable ? getSource(bench.setup) : interpolate('m#.setup()'), - 'fn': decompilable ? getSource(fn) : interpolate('m#.fn(' + fnArg + ')'), - 'fnArg': fnArg, - 'teardown': decompilable ? getSource(bench.teardown) : interpolate('m#.teardown()') - }); - - // Use API of chosen timer. - if (timer.unit == 'ns') { - _.assign(templateData, { - 'begin': interpolate('s#=n#()'), - 'end': interpolate('r#=n#(s#);r#=r#[0]+(r#[1]/1e9)') - }); - } - else if (timer.unit == 'us') { - if (timer.ns.stop) { - _.assign(templateData, { - 'begin': interpolate('s#=n#.start()'), - 'end': interpolate('r#=n#.microseconds()/1e6') - }); - } else { - _.assign(templateData, { - 'begin': interpolate('s#=n#()'), - 'end': interpolate('r#=(n#()-s#)/1e6') - }); - } - } - else if (timer.ns.now) { - _.assign(templateData, { - 'begin': interpolate('s#=n#.now()'), - 'end': interpolate('r#=(n#.now()-s#)/1e3') - }); - } - else { - _.assign(templateData, { - 'begin': interpolate('s#=new n#().getTime()'), - 'end': interpolate('r#=(new n#().getTime()-s#)/1e3') - }); - } - // Define `timer` methods. - timer.start = createFunction( - interpolate('o#'), - interpolate('var n#=this.ns,${begin};o#.elapsed=0;o#.timeStamp=s#') - ); - - timer.stop = createFunction( - interpolate('o#'), - interpolate('var n#=this.ns,s#=o#.timeStamp,${end};o#.elapsed=r#') - ); - - // Create compiled test. - return createFunction( - interpolate('window,t#'), - 'var global = window, clearTimeout = global.clearTimeout, setTimeout = global.setTimeout;\n' + - interpolate(body) - ); - } - - /** - * Gets the current timer's minimum resolution (secs). - */ - function getRes(unit) { - var measured, - begin, - count = 30, - divisor = 1e3, - ns = timer.ns, - sample = []; - - // Get average smallest measurable time. - while (count--) { - if (unit == 'us') { - divisor = 1e6; - if (ns.stop) { - ns.start(); - while (!(measured = ns.microseconds())) {} - } else { - begin = ns(); - while (!(measured = ns() - begin)) {} - } - } - else if (unit == 'ns') { - divisor = 1e9; - begin = (begin = ns())[0] + (begin[1] / divisor); - while (!(measured = ((measured = ns())[0] + (measured[1] / divisor)) - begin)) {} - divisor = 1; - } - else if (ns.now) { - begin = ns.now(); - while (!(measured = ns.now() - begin)) {} - } - else { - begin = new ns().getTime(); - while (!(measured = new ns().getTime() - begin)) {} - } - // Check for broken timers. - if (measured > 0) { - sample.push(measured); - } else { - sample.push(Infinity); - break; - } - } - // Convert to seconds. - return getMean(sample) / divisor; - } - - /** - * Interpolates a given template string. - */ - function interpolate(string) { - // Replaces all occurrences of `#` with a unique number and template tokens with content. - return _.template(string.replace(/\#/g, /\d+/.exec(templateData.uid)))(templateData); - } - - /*----------------------------------------------------------------------*/ - - // Detect Chrome's microsecond timer: - // enable benchmarking via the --enable-benchmarking command - // line switch in at least Chrome 7 to use chrome.Interval - try { - if ((timer.ns = new (context.chrome || context.chromium).Interval)) { - timers.push({ 'ns': timer.ns, 'res': getRes('us'), 'unit': 'us' }); - } - } catch(e) {} - - // Detect Node.js's nanosecond resolution timer available in Node.js >= 0.8. - if (processObject && typeof (timer.ns = processObject.hrtime) == 'function') { - timers.push({ 'ns': timer.ns, 'res': getRes('ns'), 'unit': 'ns' }); - } - // Detect Wade Simmons' Node.js `microtime` module. - if (microtimeObject && typeof (timer.ns = microtimeObject.now) == 'function') { - timers.push({ 'ns': timer.ns, 'res': getRes('us'), 'unit': 'us' }); - } - // Pick timer with highest resolution. - timer = _.minBy(timers, 'res'); - - // Error if there are no working timers. - if (timer.res == Infinity) { - throw new Error('Benchmark.js was unable to find a working timer.'); - } - // Resolve time span required to achieve a percent uncertainty of at most 1%. - // For more information see http://spiff.rit.edu/classes/phys273/uncert/uncert.html. - options.minTime || (options.minTime = max(timer.res / 2 / 0.01, 0.05)); - return clock.apply(null, arguments); - } - - /*------------------------------------------------------------------------*/ - - /** - * Computes stats on benchmark results. - * - * @private - * @param {Object} bench The benchmark instance. - * @param {Object} options The options object. - */ - function compute(bench, options) { - options || (options = {}); - - var async = options.async, - elapsed = 0, - initCount = bench.initCount, - minSamples = bench.minSamples, - queue = [], - sample = bench.stats.sample; - - /** - * Adds a clone to the queue. - */ - function enqueue() { - queue.push(bench.clone({ - '_original': bench, - 'events': { - 'abort': [update], - 'cycle': [update], - 'error': [update], - 'start': [update] - } - })); - } - - /** - * Updates the clone/original benchmarks to keep their data in sync. - */ - function update(event) { - var clone = this, - type = event.type; - - if (bench.running) { - if (type == 'start') { - // Note: `clone.minTime` prop is inited in `clock()`. - clone.count = bench.initCount; - } - else { - if (type == 'error') { - bench.error = clone.error; - } - if (type == 'abort') { - bench.abort(); - bench.emit('cycle'); - } else { - event.currentTarget = event.target = bench; - bench.emit(event); - } - } - } else if (bench.aborted) { - // Clear abort listeners to avoid triggering bench's abort/cycle again. - clone.events.abort.length = 0; - clone.abort(); - } - } - - /** - * Determines if more clones should be queued or if cycling should stop. - */ - function evaluate(event) { - var critical, - df, - mean, - moe, - rme, - sd, - sem, - variance, - clone = event.target, - done = bench.aborted, - now = _.now(), - size = sample.push(clone.times.period), - maxedOut = size >= minSamples && (elapsed += now - clone.times.timeStamp) / 1e3 > bench.maxTime, - times = bench.times, - varOf = function(sum, x) { return sum + pow(x - mean, 2); }; - - // Exit early for aborted or unclockable tests. - if (done || clone.hz == Infinity) { - maxedOut = !(size = sample.length = queue.length = 0); - } - - if (!done) { - // Compute the sample mean (estimate of the population mean). - mean = getMean(sample); - // Compute the sample variance (estimate of the population variance). - variance = _.reduce(sample, varOf, 0) / (size - 1) || 0; - // Compute the sample standard deviation (estimate of the population standard deviation). - sd = sqrt(variance); - // Compute the standard error of the mean (a.k.a. the standard deviation of the sampling distribution of the sample mean). - sem = sd / sqrt(size); - // Compute the degrees of freedom. - df = size - 1; - // Compute the critical value. - critical = tTable[Math.round(df) || 1] || tTable.infinity; - // Compute the margin of error. - moe = sem * critical; - // Compute the relative margin of error. - rme = (moe / mean) * 100 || 0; - - _.assign(bench.stats, { - 'deviation': sd, - 'mean': mean, - 'moe': moe, - 'rme': rme, - 'sem': sem, - 'variance': variance - }); - - // Abort the cycle loop when the minimum sample size has been collected - // and the elapsed time exceeds the maximum time allowed per benchmark. - // We don't count cycle delays toward the max time because delays may be - // increased by browsers that clamp timeouts for inactive tabs. For more - // information see https://developer.mozilla.org/en/window.setTimeout#Inactive_tabs. - if (maxedOut) { - // Reset the `initCount` in case the benchmark is rerun. - bench.initCount = initCount; - bench.running = false; - done = true; - times.elapsed = (now - times.timeStamp) / 1e3; - } - if (bench.hz != Infinity) { - bench.hz = 1 / mean; - times.cycle = mean * bench.count; - times.period = mean; - } - } - // If time permits, increase sample size to reduce the margin of error. - if (queue.length < 2 && !maxedOut) { - enqueue(); - } - // Abort the `invoke` cycle when done. - event.aborted = done; - } - - // Init queue and begin. - enqueue(); - invoke(queue, { - 'name': 'run', - 'args': { 'async': async }, - 'queued': true, - 'onCycle': evaluate, - 'onComplete': function() { bench.emit('complete'); } - }); - } - - /*------------------------------------------------------------------------*/ - - /** - * Cycles a benchmark until a run `count` can be established. - * - * @private - * @param {Object} clone The cloned benchmark instance. - * @param {Object} options The options object. - */ - function cycle(clone, options) { - options || (options = {}); - - var deferred; - if (clone instanceof Deferred) { - deferred = clone; - clone = clone.benchmark; - } - var clocked, - cycles, - divisor, - event, - minTime, - period, - async = options.async, - bench = clone._original, - count = clone.count, - times = clone.times; - - // Continue, if not aborted between cycles. - if (clone.running) { - // `minTime` is set to `Benchmark.options.minTime` in `clock()`. - cycles = ++clone.cycles; - clocked = deferred ? deferred.elapsed : clock(clone); - minTime = clone.minTime; - - if (cycles > bench.cycles) { - bench.cycles = cycles; - } - if (clone.error) { - event = Event('error'); - event.message = clone.error; - clone.emit(event); - if (!event.cancelled) { - clone.abort(); - } - } - } - // Continue, if not errored. - if (clone.running) { - // Compute the time taken to complete last test cycle. - bench.times.cycle = times.cycle = clocked; - // Compute the seconds per operation. - period = bench.times.period = times.period = clocked / count; - // Compute the ops per second. - bench.hz = clone.hz = 1 / period; - // Avoid working our way up to this next time. - bench.initCount = clone.initCount = count; - // Do we need to do another cycle? - clone.running = clocked < minTime; - - if (clone.running) { - // Tests may clock at `0` when `initCount` is a small number, - // to avoid that we set its count to something a bit higher. - if (!clocked && (divisor = divisors[clone.cycles]) != null) { - count = floor(4e6 / divisor); - } - // Calculate how many more iterations it will take to achieve the `minTime`. - if (count <= clone.count) { - count += Math.ceil((minTime - clocked) / period); - } - clone.running = count != Infinity; - } - } - // Should we exit early? - event = Event('cycle'); - clone.emit(event); - if (event.aborted) { - clone.abort(); - } - // Figure out what to do next. - if (clone.running) { - // Start a new cycle. - clone.count = count; - if (deferred) { - clone.compiled.call(deferred, context, timer); - } else if (async) { - delay(clone, function() { cycle(clone, options); }); - } else { - cycle(clone); - } - } - else { - // Fix TraceMonkey bug associated with clock fallbacks. - // For more information see http://bugzil.la/509069. - if (support.browser) { - runScript(uid + '=1;delete ' + uid); - } - // We're done. - clone.emit('complete'); - } - } - - /*------------------------------------------------------------------------*/ - - /** - * Runs the benchmark. - * - * @memberOf Benchmark - * @param {Object} [options={}] Options object. - * @returns {Object} The benchmark instance. - * @example - * - * // basic usage - * bench.run(); - * - * // or with options - * bench.run({ 'async': true }); - */ - function run(options) { - var bench = this, - event = Event('start'); - - // Set `running` to `false` so `reset()` won't call `abort()`. - bench.running = false; - bench.reset(); - bench.running = true; - - bench.count = bench.initCount; - bench.times.timeStamp = _.now(); - bench.emit(event); - - if (!event.cancelled) { - options = { 'async': ((options = options && options.async) == null ? bench.async : options) && support.timeout }; - - // For clones created within `compute()`. - if (bench._original) { - if (bench.defer) { - Deferred(bench); - } else { - cycle(bench, options); - } - } - // For original benchmarks. - else { - compute(bench, options); - } - } - return bench; - } - - /*------------------------------------------------------------------------*/ - - // Firefox 1 erroneously defines variable and argument names of functions on - // the function itself as non-configurable properties with `undefined` values. - // The bugginess continues as the `Benchmark` constructor has an argument - // named `options` and Firefox 1 will not assign a value to `Benchmark.options`, - // making it non-writable in the process, unless it is the first property - // assigned by for-in loop of `_.assign()`. - _.assign(Benchmark, { - - /** - * The default options copied by benchmark instances. - * - * @static - * @memberOf Benchmark - * @type Object - */ - 'options': { - - /** - * A flag to indicate that benchmark cycles will execute asynchronously - * by default. - * - * @memberOf Benchmark.options - * @type boolean - */ - 'async': false, - - /** - * A flag to indicate that the benchmark clock is deferred. - * - * @memberOf Benchmark.options - * @type boolean - */ - 'defer': false, - - /** - * The delay between test cycles (secs). - * @memberOf Benchmark.options - * @type number - */ - 'delay': 0.005, - - /** - * Displayed by `Benchmark#toString` when a `name` is not available - * (auto-generated if absent). - * - * @memberOf Benchmark.options - * @type string - */ - 'id': undefined, - - /** - * The default number of times to execute a test on a benchmark's first cycle. - * - * @memberOf Benchmark.options - * @type number - */ - 'initCount': 1, - - /** - * The maximum time a benchmark is allowed to run before finishing (secs). - * - * Note: Cycle delays aren't counted toward the maximum time. - * - * @memberOf Benchmark.options - * @type number - */ - 'maxTime': 5, - - /** - * The minimum sample size required to perform statistical analysis. - * - * @memberOf Benchmark.options - * @type number - */ - 'minSamples': 5, - - /** - * The time needed to reduce the percent uncertainty of measurement to 1% (secs). - * - * @memberOf Benchmark.options - * @type number - */ - 'minTime': 0, - - /** - * The name of the benchmark. - * - * @memberOf Benchmark.options - * @type string - */ - 'name': undefined, - - /** - * An event listener called when the benchmark is aborted. - * - * @memberOf Benchmark.options - * @type Function - */ - 'onAbort': undefined, - - /** - * An event listener called when the benchmark completes running. - * - * @memberOf Benchmark.options - * @type Function - */ - 'onComplete': undefined, - - /** - * An event listener called after each run cycle. - * - * @memberOf Benchmark.options - * @type Function - */ - 'onCycle': undefined, - - /** - * An event listener called when a test errors. - * - * @memberOf Benchmark.options - * @type Function - */ - 'onError': undefined, - - /** - * An event listener called when the benchmark is reset. - * - * @memberOf Benchmark.options - * @type Function - */ - 'onReset': undefined, - - /** - * An event listener called when the benchmark starts running. - * - * @memberOf Benchmark.options - * @type Function - */ - 'onStart': undefined - }, - - /** - * Platform object with properties describing things like browser name, - * version, and operating system. See [`platform.js`](https://mths.be/platform). - * - * @static - * @memberOf Benchmark - * @type Object - */ - 'platform': context.platform || require('platform') || ({ - 'description': context.navigator && context.navigator.userAgent || null, - 'layout': null, - 'product': null, - 'name': null, - 'manufacturer': null, - 'os': null, - 'prerelease': null, - 'version': null, - 'toString': function() { - return this.description || ''; - } - }), - - /** - * The semantic version number. - * - * @static - * @memberOf Benchmark - * @type string - */ - 'version': '2.1.1' - }); - - _.assign(Benchmark, { - 'filter': filter, - 'formatNumber': formatNumber, - 'invoke': invoke, - 'join': join, - 'runInContext': runInContext, - 'support': support - }); - - // Add lodash methods to Benchmark. - _.each(['each', 'forEach', 'forOwn', 'has', 'indexOf', 'map', 'reduce'], function(methodName) { - Benchmark[methodName] = _[methodName]; - }); - - /*------------------------------------------------------------------------*/ - - _.assign(Benchmark.prototype, { - - /** - * The number of times a test was executed. - * - * @memberOf Benchmark - * @type number - */ - 'count': 0, - - /** - * The number of cycles performed while benchmarking. - * - * @memberOf Benchmark - * @type number - */ - 'cycles': 0, - - /** - * The number of executions per second. - * - * @memberOf Benchmark - * @type number - */ - 'hz': 0, - - /** - * The compiled test function. - * - * @memberOf Benchmark - * @type {Function|string} - */ - 'compiled': undefined, - - /** - * The error object if the test failed. - * - * @memberOf Benchmark - * @type Object - */ - 'error': undefined, - - /** - * The test to benchmark. - * - * @memberOf Benchmark - * @type {Function|string} - */ - 'fn': undefined, - - /** - * A flag to indicate if the benchmark is aborted. - * - * @memberOf Benchmark - * @type boolean - */ - 'aborted': false, - - /** - * A flag to indicate if the benchmark is running. - * - * @memberOf Benchmark - * @type boolean - */ - 'running': false, - - /** - * Compiled into the test and executed immediately **before** the test loop. - * - * @memberOf Benchmark - * @type {Function|string} - * @example - * - * // basic usage - * var bench = Benchmark({ - * 'setup': function() { - * var c = this.count, - * element = document.getElementById('container'); - * while (c--) { - * element.appendChild(document.createElement('div')); - * } - * }, - * 'fn': function() { - * element.removeChild(element.lastChild); - * } - * }); - * - * // compiles to something like: - * var c = this.count, - * element = document.getElementById('container'); - * while (c--) { - * element.appendChild(document.createElement('div')); - * } - * var start = new Date; - * while (count--) { - * element.removeChild(element.lastChild); - * } - * var end = new Date - start; - * - * // or using strings - * var bench = Benchmark({ - * 'setup': '\ - * var a = 0;\n\ - * (function() {\n\ - * (function() {\n\ - * (function() {', - * 'fn': 'a += 1;', - * 'teardown': '\ - * }())\n\ - * }())\n\ - * }())' - * }); - * - * // compiles to something like: - * var a = 0; - * (function() { - * (function() { - * (function() { - * var start = new Date; - * while (count--) { - * a += 1; - * } - * var end = new Date - start; - * }()) - * }()) - * }()) - */ - 'setup': _.noop, - - /** - * Compiled into the test and executed immediately **after** the test loop. - * - * @memberOf Benchmark - * @type {Function|string} - */ - 'teardown': _.noop, - - /** - * An object of stats including mean, margin or error, and standard deviation. - * - * @memberOf Benchmark - * @type Object - */ - 'stats': { - - /** - * The margin of error. - * - * @memberOf Benchmark#stats - * @type number - */ - 'moe': 0, - - /** - * The relative margin of error (expressed as a percentage of the mean). - * - * @memberOf Benchmark#stats - * @type number - */ - 'rme': 0, - - /** - * The standard error of the mean. - * - * @memberOf Benchmark#stats - * @type number - */ - 'sem': 0, - - /** - * The sample standard deviation. - * - * @memberOf Benchmark#stats - * @type number - */ - 'deviation': 0, - - /** - * The sample arithmetic mean (secs). - * - * @memberOf Benchmark#stats - * @type number - */ - 'mean': 0, - - /** - * The array of sampled periods. - * - * @memberOf Benchmark#stats - * @type Array - */ - 'sample': [], - - /** - * The sample variance. - * - * @memberOf Benchmark#stats - * @type number - */ - 'variance': 0 - }, - - /** - * An object of timing data including cycle, elapsed, period, start, and stop. - * - * @memberOf Benchmark - * @type Object - */ - 'times': { - - /** - * The time taken to complete the last cycle (secs). - * - * @memberOf Benchmark#times - * @type number - */ - 'cycle': 0, - - /** - * The time taken to complete the benchmark (secs). - * - * @memberOf Benchmark#times - * @type number - */ - 'elapsed': 0, - - /** - * The time taken to execute the test once (secs). - * - * @memberOf Benchmark#times - * @type number - */ - 'period': 0, - - /** - * A timestamp of when the benchmark started (ms). - * - * @memberOf Benchmark#times - * @type number - */ - 'timeStamp': 0 - } - }); - - _.assign(Benchmark.prototype, { - 'abort': abort, - 'clone': clone, - 'compare': compare, - 'emit': emit, - 'listeners': listeners, - 'off': off, - 'on': on, - 'reset': reset, - 'run': run, - 'toString': toStringBench - }); - - /*------------------------------------------------------------------------*/ - - _.assign(Deferred.prototype, { - - /** - * The deferred benchmark instance. - * - * @memberOf Benchmark.Deferred - * @type Object - */ - 'benchmark': null, - - /** - * The number of deferred cycles performed while benchmarking. - * - * @memberOf Benchmark.Deferred - * @type number - */ - 'cycles': 0, - - /** - * The time taken to complete the deferred benchmark (secs). - * - * @memberOf Benchmark.Deferred - * @type number - */ - 'elapsed': 0, - - /** - * A timestamp of when the deferred benchmark started (ms). - * - * @memberOf Benchmark.Deferred - * @type number - */ - 'timeStamp': 0 - }); - - _.assign(Deferred.prototype, { - 'resolve': resolve - }); - - /*------------------------------------------------------------------------*/ - - _.assign(Event.prototype, { - - /** - * A flag to indicate if the emitters listener iteration is aborted. - * - * @memberOf Benchmark.Event - * @type boolean - */ - 'aborted': false, - - /** - * A flag to indicate if the default action is cancelled. - * - * @memberOf Benchmark.Event - * @type boolean - */ - 'cancelled': false, - - /** - * The object whose listeners are currently being processed. - * - * @memberOf Benchmark.Event - * @type Object - */ - 'currentTarget': undefined, - - /** - * The return value of the last executed listener. - * - * @memberOf Benchmark.Event - * @type Mixed - */ - 'result': undefined, - - /** - * The object to which the event was originally emitted. - * - * @memberOf Benchmark.Event - * @type Object - */ - 'target': undefined, - - /** - * A timestamp of when the event was created (ms). - * - * @memberOf Benchmark.Event - * @type number - */ - 'timeStamp': 0, - - /** - * The event type. - * - * @memberOf Benchmark.Event - * @type string - */ - 'type': '' - }); - - /*------------------------------------------------------------------------*/ - - /** - * The default options copied by suite instances. - * - * @static - * @memberOf Benchmark.Suite - * @type Object - */ - Suite.options = { - - /** - * The name of the suite. - * - * @memberOf Benchmark.Suite.options - * @type string - */ - 'name': undefined - }; - - /*------------------------------------------------------------------------*/ - - _.assign(Suite.prototype, { - - /** - * The number of benchmarks in the suite. - * - * @memberOf Benchmark.Suite - * @type number - */ - 'length': 0, - - /** - * A flag to indicate if the suite is aborted. - * - * @memberOf Benchmark.Suite - * @type boolean - */ - 'aborted': false, - - /** - * A flag to indicate if the suite is running. - * - * @memberOf Benchmark.Suite - * @type boolean - */ - 'running': false - }); - - _.assign(Suite.prototype, { - 'abort': abortSuite, - 'add': add, - 'clone': cloneSuite, - 'emit': emit, - 'filter': filterSuite, - 'join': arrayRef.join, - 'listeners': listeners, - 'off': off, - 'on': on, - 'pop': arrayRef.pop, - 'push': push, - 'reset': resetSuite, - 'run': runSuite, - 'reverse': arrayRef.reverse, - 'shift': shift, - 'slice': slice, - 'sort': arrayRef.sort, - 'splice': arrayRef.splice, - 'unshift': unshift - }); 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reference for `undefined` in pre-ES5 environments. */ - var undefined; - - /** Used as the semantic version number. */ - var VERSION = '4.14.1'; - - /** Used as the size to enable large array optimizations. */ - var LARGE_ARRAY_SIZE = 200; - - /** Used as the `TypeError` message for "Functions" methods. */ - var FUNC_ERROR_TEXT = 'Expected a function'; - - /** Used to stand-in for `undefined` hash values. */ - var HASH_UNDEFINED = '__lodash_hash_undefined__'; - - /** Used as the internal argument placeholder. */ - var PLACEHOLDER = '__lodash_placeholder__'; - - /** Used to compose bitmasks for function metadata. */ - var BIND_FLAG = 1, - BIND_KEY_FLAG = 2, - CURRY_BOUND_FLAG = 4, - CURRY_FLAG = 8, - CURRY_RIGHT_FLAG = 16, - PARTIAL_FLAG = 32, - PARTIAL_RIGHT_FLAG = 64, - ARY_FLAG = 128, - REARG_FLAG = 256, - FLIP_FLAG = 512; - - /** Used to compose bitmasks for comparison styles. */ - var UNORDERED_COMPARE_FLAG = 1, - PARTIAL_COMPARE_FLAG = 2; - - /** Used as default options for 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['partialRight', PARTIAL_RIGHT_FLAG], - ['rearg', REARG_FLAG] - ]; - - /** `Object#toString` result references. */ - var argsTag = '[object Arguments]', - arrayTag = '[object Array]', - boolTag = '[object Boolean]', - dateTag = '[object Date]', - errorTag = '[object Error]', - funcTag = '[object Function]', - genTag = '[object GeneratorFunction]', - mapTag = '[object Map]', - numberTag = '[object Number]', - objectTag = '[object Object]', - promiseTag = '[object Promise]', - regexpTag = '[object RegExp]', - setTag = '[object Set]', - stringTag = '[object String]', - symbolTag = '[object Symbol]', - weakMapTag = '[object WeakMap]', - weakSetTag = '[object WeakSet]'; - - var arrayBufferTag = '[object ArrayBuffer]', - dataViewTag = '[object DataView]', - float32Tag = '[object Float32Array]', - float64Tag = '[object Float64Array]', - int8Tag = '[object Int8Array]', - int16Tag = '[object Int16Array]', - int32Tag = '[object Int32Array]', - uint8Tag = '[object Uint8Array]', - uint8ClampedTag = '[object Uint8ClampedArray]', - uint16Tag = '[object Uint16Array]', - uint32Tag = '[object Uint32Array]'; - - /** Used to match empty string literals in compiled template source. */ - var reEmptyStringLeading = /\b__p \+= '';/g, - reEmptyStringMiddle = /\b(__p \+=) '' \+/g, - reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g; - - /** Used to match HTML entities and HTML characters. */ - var reEscapedHtml = /&(?:amp|lt|gt|quot|#39|#96);/g, - reUnescapedHtml = /[&<>"'`]/g, - reHasEscapedHtml = RegExp(reEscapedHtml.source), - reHasUnescapedHtml = RegExp(reUnescapedHtml.source); - - /** Used to match template delimiters. */ - var reEscape = /<%-([\s\S]+?)%>/g, - reEvaluate = /<%([\s\S]+?)%>/g, - reInterpolate = /<%=([\s\S]+?)%>/g; - - /** Used to match property names within property paths. */ - var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/, - reIsPlainProp = /^\w*$/, - reLeadingDot = /^\./, - rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g; - - /** - * Used to match `RegExp` - * [syntax characters](http://ecma-international.org/ecma-262/6.0/#sec-patterns). - */ - var reRegExpChar = /[\\^$.*+?()[\]{}|]/g, - reHasRegExpChar = RegExp(reRegExpChar.source); - - /** Used to match leading and trailing whitespace. */ - var reTrim = /^\s+|\s+$/g, - reTrimStart = /^\s+/, - reTrimEnd = /\s+$/; - - /** Used to match wrap detail comments. */ - var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/, - reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/, - reSplitDetails = /,? & /; - - /** Used to match non-compound words composed of alphanumeric characters. */ - var reBasicWord = /[a-zA-Z0-9]+/g; - - /** Used to match backslashes in property paths. */ - var reEscapeChar = /\\(\\)?/g; - - /** - * Used to match - * [ES template delimiters](http://ecma-international.org/ecma-262/6.0/#sec-template-literal-lexical-components). - */ - var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g; - - /** Used to match `RegExp` flags from their coerced string values. */ - var reFlags = /\w*$/; - - /** Used to detect hexadecimal string values. */ - var reHasHexPrefix = /^0x/i; - - /** Used to detect bad signed hexadecimal string values. */ - var reIsBadHex = /^[-+]0x[0-9a-f]+$/i; - - /** Used to detect binary string values. */ - var reIsBinary = /^0b[01]+$/i; - - /** Used to detect host constructors (Safari). */ - var reIsHostCtor = /^\[object .+?Constructor\]$/; - - /** Used to detect octal string values. */ - var reIsOctal = /^0o[0-7]+$/i; - - /** Used to detect unsigned integer values. */ - var reIsUint = /^(?:0|[1-9]\d*)$/; - - /** Used to match latin-1 supplementary letters (excluding mathematical operators). */ - var reLatin1 = /[\xc0-\xd6\xd8-\xde\xdf-\xf6\xf8-\xff]/g; - - /** Used to ensure capturing order of template delimiters. */ - var reNoMatch = /($^)/; - - /** Used to match unescaped characters in compiled string literals. */ - var reUnescapedString = /['\n\r\u2028\u2029\\]/g; - - /** Used to compose unicode character classes. */ - var rsAstralRange = '\\ud800-\\udfff', - rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23', - rsComboSymbolsRange = '\\u20d0-\\u20f0', - rsDingbatRange = '\\u2700-\\u27bf', - rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff', - rsMathOpRange = '\\xac\\xb1\\xd7\\xf7', - rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf', - rsPunctuationRange = '\\u2000-\\u206f', - rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000', - rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde', - rsVarRange = '\\ufe0e\\ufe0f', - rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange; - - /** Used to compose unicode capture groups. */ - var rsApos = "['\u2019]", - rsAstral = '[' + rsAstralRange + ']', - rsBreak = '[' + rsBreakRange + ']', - rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']', - rsDigits = '\\d+', - rsDingbat = '[' + rsDingbatRange + ']', - rsLower = '[' + rsLowerRange + ']', - rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']', - rsFitz = '\\ud83c[\\udffb-\\udfff]', - rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')', - rsNonAstral = '[^' + rsAstralRange + ']', - rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}', - rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]', - rsUpper = '[' + rsUpperRange + ']', - rsZWJ = '\\u200d'; - - /** Used to compose unicode regexes. */ - var rsLowerMisc = '(?:' + rsLower + '|' + rsMisc + ')', - rsUpperMisc = '(?:' + rsUpper + '|' + rsMisc + ')', - rsOptLowerContr = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?', - rsOptUpperContr = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?', - reOptMod = rsModifier + '?', - rsOptVar = '[' + rsVarRange + ']?', - rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*', - rsSeq = rsOptVar + reOptMod + rsOptJoin, - rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq, - rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')'; - - /** Used to match apostrophes. */ - var reApos = RegExp(rsApos, 'g'); - - /** - * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and - * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols). - */ - var reComboMark = RegExp(rsCombo, 'g'); - - /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */ - var reComplexSymbol = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g'); - - /** Used to match complex or compound words. */ - var reComplexWord = RegExp([ - rsUpper + '?' + rsLower + '+' + rsOptLowerContr + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')', - rsUpperMisc + '+' + rsOptUpperContr + '(?=' + [rsBreak, rsUpper + rsLowerMisc, '$'].join('|') + ')', - rsUpper + '?' + rsLowerMisc + '+' + rsOptLowerContr, - rsUpper + '+' + rsOptUpperContr, - rsDigits, - rsEmoji - ].join('|'), 'g'); - - /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */ - var reHasComplexSymbol = RegExp('[' + rsZWJ + rsAstralRange + rsComboMarksRange + rsComboSymbolsRange + rsVarRange + ']'); - - /** Used to detect strings that need a more robust regexp to match words. */ - var reHasComplexWord = /[a-z][A-Z]|[A-Z]{2,}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/; - - /** Used to assign default `context` object properties. */ - var contextProps = [ - 'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array', - 'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object', - 'Promise', 'Reflect', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', - 'Uint8Array', 'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap', - '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout' - ]; - - /** Used to make template sourceURLs easier to identify. */ - var templateCounter = -1; - - /** Used to identify `toStringTag` values of typed arrays. */ - var typedArrayTags = {}; - typedArrayTags[float32Tag] = typedArrayTags[float64Tag] = - typedArrayTags[int8Tag] = typedArrayTags[int16Tag] = - typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] = - typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] = - typedArrayTags[uint32Tag] = true; - typedArrayTags[argsTag] = typedArrayTags[arrayTag] = - typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] = - typedArrayTags[dataViewTag] = typedArrayTags[dateTag] = - typedArrayTags[errorTag] = typedArrayTags[funcTag] = - typedArrayTags[mapTag] = typedArrayTags[numberTag] = - typedArrayTags[objectTag] = typedArrayTags[regexpTag] = - typedArrayTags[setTag] = typedArrayTags[stringTag] = - typedArrayTags[weakMapTag] = false; - - /** Used to identify `toStringTag` values supported by `_.clone`. */ - var cloneableTags = {}; - cloneableTags[argsTag] = cloneableTags[arrayTag] = - cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] = - cloneableTags[boolTag] = cloneableTags[dateTag] = - cloneableTags[float32Tag] = cloneableTags[float64Tag] = - cloneableTags[int8Tag] = cloneableTags[int16Tag] = - cloneableTags[int32Tag] = cloneableTags[mapTag] = - cloneableTags[numberTag] = cloneableTags[objectTag] = - cloneableTags[regexpTag] = cloneableTags[setTag] = - cloneableTags[stringTag] = cloneableTags[symbolTag] = - cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] = - cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true; - cloneableTags[errorTag] = cloneableTags[funcTag] = - cloneableTags[weakMapTag] = false; - - /** Used to map latin-1 supplementary letters to basic latin letters. */ - var deburredLetters = { - '\xc0': 'A', '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A', - '\xe0': 'a', '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a', - '\xc7': 'C', '\xe7': 'c', - '\xd0': 'D', '\xf0': 'd', - '\xc8': 'E', '\xc9': 'E', '\xca': 'E', '\xcb': 'E', - '\xe8': 'e', '\xe9': 'e', '\xea': 'e', '\xeb': 'e', - '\xcC': 'I', '\xcd': 'I', '\xce': 'I', '\xcf': 'I', - '\xeC': 'i', '\xed': 'i', '\xee': 'i', '\xef': 'i', - '\xd1': 'N', '\xf1': 'n', - '\xd2': 'O', '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O', - '\xf2': 'o', '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o', - '\xd9': 'U', '\xda': 'U', '\xdb': 'U', '\xdc': 'U', - '\xf9': 'u', '\xfa': 'u', '\xfb': 'u', '\xfc': 'u', - '\xdd': 'Y', '\xfd': 'y', '\xff': 'y', - '\xc6': 'Ae', '\xe6': 'ae', - '\xde': 'Th', '\xfe': 'th', - '\xdf': 'ss' - }; - - /** Used to map characters to HTML entities. */ - var htmlEscapes = { - '&': '&', - '<': '<', - '>': '>', - '"': '"', - "'": ''', - '`': '`' - }; - - /** Used to map HTML entities to characters. */ - var htmlUnescapes = { - '&': '&', - '<': '<', - '>': '>', - '"': '"', - ''': "'", - '`': '`' - }; - - /** Used to escape characters for inclusion in compiled string literals. */ - var stringEscapes = { - '\\': '\\', - "'": "'", - '\n': 'n', - '\r': 'r', - '\u2028': 'u2028', - '\u2029': 'u2029' - }; - - /** Built-in method references without a dependency on `root`. */ - var freeParseFloat = parseFloat, - freeParseInt = parseInt; - - /** Detect free variable `global` from Node.js. */ - var freeGlobal = typeof global == 'object' && global && global.Object === Object && global; - - /** Detect free variable `self`. */ - var freeSelf = typeof self == 'object' && self && self.Object === Object && self; - - /** Used as a reference to the global object. */ - var root = freeGlobal || freeSelf || Function('return this')(); - - /** Detect free variable `exports`. */ - var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports; - - /** Detect free variable `module`. */ - var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module; - - /** Detect the popular CommonJS extension `module.exports`. */ - var moduleExports = freeModule && freeModule.exports === freeExports; - - /** Detect free variable `process` from Node.js. */ - var freeProcess = moduleExports && freeGlobal.process; - - /** Used to access faster Node.js helpers. */ - var nodeUtil = (function() { - try { - return freeProcess && freeProcess.binding('util'); - } catch (e) {} - }()); - - /* Node.js helper references. */ - var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer, - nodeIsDate = nodeUtil && nodeUtil.isDate, - nodeIsMap = nodeUtil && nodeUtil.isMap, - nodeIsRegExp = nodeUtil && nodeUtil.isRegExp, - nodeIsSet = nodeUtil && nodeUtil.isSet, - nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray; - - /*--------------------------------------------------------------------------*/ - - /** - * Adds the key-value `pair` to `map`. - * - * @private - * @param {Object} map The map to modify. - * @param {Array} pair The key-value pair to add. - * @returns {Object} Returns `map`. - */ - function addMapEntry(map, pair) { - // Don't return `map.set` because it's not chainable in IE 11. - map.set(pair[0], pair[1]); - return map; - } - - /** - * Adds `value` to `set`. - * - * @private - * @param {Object} set The set to modify. - * @param {*} value The value to add. - * @returns {Object} Returns `set`. - */ - function addSetEntry(set, value) { - // Don't return `set.add` because it's not chainable in IE 11. - set.add(value); - return set; - } - - /** - * 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) { - switch (args.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); - } - - /** - * A specialized version of `baseAggregator` for arrays. - * - * @private - * @param {Array} [array] The array to iterate over. - * @param {Function} setter The function to set `accumulator` values. - * @param {Function} iteratee The iteratee to transform keys. - * @param {Object} accumulator The initial aggregated object. - * @returns {Function} Returns `accumulator`. - */ - function arrayAggregator(array, setter, iteratee, accumulator) { - var index = -1, - length = array ? array.length : 0; - - while (++index < length) { - var value = array[index]; - setter(accumulator, value, iteratee(value), array); - } - return accumulator; - } - - /** - * 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; - } - - /** - * A specialized version of `_.forEachRight` 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 arrayEachRight(array, iteratee) { - var length = array ? array.length : 0; - - while (length--) { - if (iteratee(array[length], length, array) === false) { - break; - } - } - return array; - } - - /** - * A specialized version of `_.every` for arrays without support for - * iteratee shorthands. - * - * @private - * @param {Array} [array] The array to iterate over. - * @param {Function} predicate The function invoked per iteration. - * @returns {boolean} Returns `true` if all elements pass the predicate check, - * else `false`. - */ - function arrayEvery(array, predicate) { - var index = -1, - length = array ? array.length : 0; - - while (++index < length) { - if (!predicate(array[index], index, array)) { - return false; - } - } - return true; - } - - /** - * A specialized version of `_.filter` for arrays without support for - * iteratee shorthands. - * - * @private - * @param {Array} [array] The array to iterate over. - * @param {Function} predicate The function invoked per iteration. - * @returns {Array} Returns the new filtered array. - */ - function arrayFilter(array, predicate) { - var index = -1, - length = array ? array.length : 0, - resIndex = 0, - result = []; - - while (++index < length) { - var value = array[index]; - if (predicate(value, index, array)) { - result[resIndex++] = value; - } - } - return result; - } - - /** - * A specialized version of `_.includes` for arrays without support for - * specifying an index to search from. - * - * @private - * @param {Array} [array] The array to search. - * @param {*} target The value to search for. - * @returns {boolean} Returns `true` if `target` is found, else `false`. - */ - function arrayIncludes(array, value) { - var length = array ? array.length : 0; - return !!length && baseIndexOf(array, value, 0) > -1; - } - - /** - * This function is like `arrayIncludes` except that it accepts a comparator. - * - * @private - * @param {Array} [array] The array to search. - * @param {*} target The value to search for. - * @param {Function} comparator The comparator invoked per element. - * @returns {boolean} Returns `true` if `target` is found, else `false`. - */ - function arrayIncludesWith(array, value, comparator) { - var index = -1, - length = array ? array.length : 0; - - while (++index < length) { - if (comparator(value, array[index])) { - return true; - } - } - return false; - } - - /** - * 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; - } - - /** - * Appends the elements of `values` to `array`. - * - * @private - * @param {Array} array The array to modify. - * @param {Array} values The values to append. - * @returns {Array} Returns `array`. - */ - function arrayPush(array, values) { - var index = -1, - length = values.length, - offset = array.length; - - while (++index < length) { - array[offset + index] = values[index]; - } - return array; - } - - /** - * A specialized version of `_.reduce` for arrays without support for - * iteratee shorthands. - * - * @private - * @param {Array} [array] The array to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @param {*} [accumulator] The initial value. - * @param {boolean} [initAccum] Specify using the first element of `array` as - * the initial value. - * @returns {*} Returns the accumulated value. - */ - function arrayReduce(array, iteratee, accumulator, initAccum) { - var index = -1, - length = array ? array.length : 0; - - if (initAccum && length) { - accumulator = array[++index]; - } - while (++index < length) { - accumulator = iteratee(accumulator, array[index], index, array); - } - return accumulator; - } - - /** - * A specialized version of `_.reduceRight` for arrays without support for - * iteratee shorthands. - * - * @private - * @param {Array} [array] The array to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @param {*} [accumulator] The initial value. - * @param {boolean} [initAccum] Specify using the last element of `array` as - * the initial value. - * @returns {*} Returns the accumulated value. - */ - function arrayReduceRight(array, iteratee, accumulator, initAccum) { - var length = array ? array.length : 0; - if (initAccum && length) { - accumulator = array[--length]; - } - while (length--) { - accumulator = iteratee(accumulator, array[length], length, array); - } - return accumulator; - } - - /** - * A specialized version of `_.some` for arrays without support for iteratee - * shorthands. - * - * @private - * @param {Array} [array] The array to iterate over. - * @param {Function} predicate The function invoked per iteration. - * @returns {boolean} Returns `true` if any element passes the predicate check, - * else `false`. - */ - function arraySome(array, predicate) { - var index = -1, - length = array ? array.length : 0; - - while (++index < length) { - if (predicate(array[index], index, array)) { - return true; - } - } - return false; - } - - /** - * The base implementation of methods like `_.findKey` and `_.findLastKey`, - * without support for iteratee shorthands, which iterates over `collection` - * using `eachFunc`. - * - * @private - * @param {Array|Object} collection The collection to search. - * @param {Function} predicate The function invoked per iteration. - * @param {Function} eachFunc The function to iterate over `collection`. - * @returns {*} Returns the found element or its key, else `undefined`. - */ - function baseFindKey(collection, predicate, eachFunc) { - var result; - eachFunc(collection, function(value, key, collection) { - if (predicate(value, key, collection)) { - result = key; - return false; - } - }); - return result; - } - - /** - * The base implementation of `_.findIndex` and `_.findLastIndex` without - * support for iteratee shorthands. - * - * @private - * @param {Array} array The array to search. - * @param {Function} predicate The function invoked per iteration. - * @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 value, else `-1`. - */ - function baseFindIndex(array, predicate, fromIndex, fromRight) { - var length = array.length, - index = fromIndex + (fromRight ? 1 : -1); - - while ((fromRight ? index-- : ++index < length)) { - if (predicate(array[index], index, array)) { - 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 baseFindIndex(array, baseIsNaN, fromIndex); - } - var index = fromIndex - 1, - length = array.length; - - while (++index < length) { - if (array[index] === value) { - return index; - } - } - return -1; - } - - /** - * This function is like `baseIndexOf` except that it accepts a comparator. - * - * @private - * @param {Array} array The array to search. - * @param {*} value The value to search for. - * @param {number} fromIndex The index to search from. - * @param {Function} comparator The comparator invoked per element. - * @returns {number} Returns the index of the matched value, else `-1`. - */ - function baseIndexOfWith(array, value, fromIndex, comparator) { - var index = fromIndex - 1, - length = array.length; - - while (++index < length) { - if (comparator(array[index], value)) { - return index; - } - } - return -1; - } - - /** - * The base implementation of `_.isNaN` without support for number objects. - * - * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`. - */ - function baseIsNaN(value) { - return value !== value; - } - - /** - * The base implementation of `_.mean` and `_.meanBy` without support for - * iteratee shorthands. - * - * @private - * @param {Array} array The array to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @returns {number} Returns the mean. - */ - function baseMean(array, iteratee) { - var length = array ? array.length : 0; - return length ? (baseSum(array, iteratee) / length) : NAN; - } - - /** - * 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]; - }; - } - - /** - * The base implementation of `_.propertyOf` without support for deep paths. - * - * @private - * @param {Object} object The object to query. - * @returns {Function} Returns the new accessor function. - */ - function basePropertyOf(object) { - return function(key) { - return object == null ? undefined : object[key]; - }; - } - - /** - * The base implementation of `_.reduce` and `_.reduceRight`, without support - * for iteratee shorthands, which iterates over `collection` using `eachFunc`. - * - * @private - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @param {*} accumulator The initial value. - * @param {boolean} initAccum Specify using the first or last element of - * `collection` as the initial value. - * @param {Function} eachFunc The function to iterate over `collection`. - * @returns {*} Returns the accumulated value. - */ - function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) { - eachFunc(collection, function(value, index, collection) { - accumulator = initAccum - ? (initAccum = false, value) - : iteratee(accumulator, value, index, collection); - }); - return accumulator; - } - - /** - * The base implementation of `_.sortBy` which uses `comparer` to define the - * sort order of `array` and replaces criteria objects with their corresponding - * values. - * - * @private - * @param {Array} array The array to sort. - * @param {Function} comparer The function to define sort order. - * @returns {Array} Returns `array`. - */ - function baseSortBy(array, comparer) { - var length = array.length; - - array.sort(comparer); - while (length--) { - array[length] = array[length].value; - } - return array; - } - - /** - * The base implementation of `_.sum` and `_.sumBy` without support for - * iteratee shorthands. - * - * @private - * @param {Array} array The array to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @returns {number} Returns the sum. - */ - function baseSum(array, iteratee) { - var result, - index = -1, - length = array.length; - - while (++index < length) { - var current = iteratee(array[index]); - if (current !== undefined) { - result = result === undefined ? current : (result + current); - } - } - return result; - } - - /** - * 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; - } - - /** - * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array - * of key-value pairs for `object` corresponding to the property names of `props`. - * - * @private - * @param {Object} object The object to query. - * @param {Array} props The property names to get values for. - * @returns {Object} Returns the key-value pairs. - */ - function baseToPairs(object, props) { - return arrayMap(props, function(key) { - return [key, object[key]]; - }); - } - - /** - * The base implementation of `_.unary` without support for storing metadata. - * - * @private - * @param {Function} func The function to cap arguments for. - * @returns {Function} Returns the new capped function. - */ - function baseUnary(func) { - return function(value) { - return func(value); - }; - } - - /** - * The base implementation of `_.values` and `_.valuesIn` which creates an - * array of `object` property values corresponding to the property names - * of `props`. - * - * @private - * @param {Object} object The object to query. - * @param {Array} props The property names to get values for. - * @returns {Object} Returns the array of property values. - */ - function baseValues(object, props) { - return arrayMap(props, function(key) { - return object[key]; - }); - } - - /** - * Checks if a cache value for `key` exists. - * - * @private - * @param {Object} cache The cache to query. - * @param {string} key The key of the entry to check. - * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. - */ - function cacheHas(cache, key) { - return cache.has(key); - } - - /** - * 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 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; - } - - /** - * Gets the number of `placeholder` occurrences in `array`. - * - * @private - * @param {Array} array The array to inspect. - * @param {*} placeholder The placeholder to search for. - * @returns {number} Returns the placeholder count. - */ - function countHolders(array, placeholder) { - var length = array.length, - result = 0; - - while (length--) { - if (array[length] === placeholder) { - result++; - } - } - return result; - } - - /** - * Used by `_.deburr` to convert latin-1 supplementary letters to basic latin letters. - * - * @private - * @param {string} letter The matched letter to deburr. - * @returns {string} Returns the deburred letter. - */ - var deburrLetter = basePropertyOf(deburredLetters); - - /** - * Used by `_.escape` to convert characters to HTML entities. - * - * @private - * @param {string} chr The matched character to escape. - * @returns {string} Returns the escaped character. - */ - var escapeHtmlChar = basePropertyOf(htmlEscapes); - - /** - * Used by `_.template` to escape characters for inclusion in compiled string literals. - * - * @private - * @param {string} chr The matched character to escape. - * @returns {string} Returns the escaped character. - */ - function escapeStringChar(chr) { - return '\\' + stringEscapes[chr]; - } - - /** - * Gets the value at `key` of `object`. - * - * @private - * @param {Object} [object] The object to query. - * @param {string} key The key of the property to get. - * @returns {*} Returns the property value. - */ - function getValue(object, key) { - return object == null ? undefined : object[key]; - } - - /** - * Checks if `value` is a host object in IE < 9. - * - * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a host object, else `false`. - */ - function isHostObject(value) { - // Many host objects are `Object` objects that can coerce to strings - // despite having improperly defined `toString` methods. - var result = false; - if (value != null && typeof value.toString != 'function') { - try { - result = !!(value + ''); - } catch (e) {} - } - return result; - } - - /** - * Converts `iterator` to an array. - * - * @private - * @param {Object} iterator The iterator to convert. - * @returns {Array} Returns the converted array. - */ - function iteratorToArray(iterator) { - var data, - result = []; - - while (!(data = iterator.next()).done) { - result.push(data.value); - } - return result; - } - - /** - * Converts `map` to its key-value pairs. - * - * @private - * @param {Object} map The map to convert. - * @returns {Array} Returns the key-value pairs. - */ - function mapToArray(map) { - var index = -1, - result = Array(map.size); - - map.forEach(function(value, key) { - result[++index] = [key, value]; - }); - return result; - } - - /** - * Creates a function that invokes `func` with its first argument transformed. - * - * @private - * @param {Function} func The function to wrap. - * @param {Function} transform The argument transform. - * @returns {Function} Returns the new function. - */ - function overArg(func, transform) { - return function(arg) { - return func(transform(arg)); - }; - } - - /** - * Replaces all `placeholder` elements in `array` with an internal placeholder - * and returns an array of their indexes. - * - * @private - * @param {Array} array The array to modify. - * @param {*} placeholder The placeholder to replace. - * @returns {Array} Returns the new array of placeholder indexes. - */ - function replaceHolders(array, placeholder) { - var index = -1, - length = array.length, - resIndex = 0, - result = []; - - while (++index < length) { - var value = array[index]; - if (value === placeholder || value === PLACEHOLDER) { - array[index] = PLACEHOLDER; - result[resIndex++] = index; - } - } - return result; - } - - /** - * Converts `set` to an array of its values. - * - * @private - * @param {Object} set The set to convert. - * @returns {Array} Returns the values. - */ - function setToArray(set) { - var index = -1, - result = Array(set.size); - - set.forEach(function(value) { - result[++index] = value; - }); - return result; - } - - /** - * Converts `set` to its value-value pairs. - * - * @private - * @param {Object} set The set to convert. - * @returns {Array} Returns the value-value pairs. - */ - function setToPairs(set) { - var index = -1, - result = Array(set.size); - - set.forEach(function(value) { - result[++index] = [value, value]; - }); - return result; - } - - /** - * Gets the number of symbols in `string`. - * - * @private - * @param {string} string The string to inspect. - * @returns {number} Returns the string size. - */ - function stringSize(string) { - if (!(string && reHasComplexSymbol.test(string))) { - return string.length; - } - var result = reComplexSymbol.lastIndex = 0; - while (reComplexSymbol.test(string)) { - result++; - } - return result; - } - - /** - * 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); - } - - /** - * Used by `_.unescape` to convert HTML entities to characters. - * - * @private - * @param {string} chr The matched character to unescape. - * @returns {string} Returns the unescaped character. - */ - var unescapeHtmlChar = basePropertyOf(htmlUnescapes); - - /*--------------------------------------------------------------------------*/ - - /** - * Create a new pristine `lodash` function using the `context` object. - * - * @static - * @memberOf _ - * @since 1.1.0 - * @category Util - * @param {Object} [context=root] The context object. - * @returns {Function} Returns a new `lodash` function. - * @example - * - * _.mixin({ 'foo': _.constant('foo') }); - * - * var lodash = _.runInContext(); - * lodash.mixin({ 'bar': lodash.constant('bar') }); - * - * _.isFunction(_.foo); - * // => true - * _.isFunction(_.bar); - * // => false - * - * lodash.isFunction(lodash.foo); - * // => false - * lodash.isFunction(lodash.bar); - * // => true - * - * // Use `context` to stub `Date#getTime` use in `_.now`. - * var stubbed = _.runInContext({ - * 'Date': function() { - * return { 'getTime': stubGetTime }; - * } - * }); - * - * // Create a suped-up `defer` in Node.js. - * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer; - */ - function runInContext(context) { - context = context ? _.defaults({}, context, _.pick(root, contextProps)) : root; - - /** Built-in constructor references. */ - var Array = context.Array, - Date = context.Date, - Error = context.Error, - Math = context.Math, - RegExp = context.RegExp, - TypeError = context.TypeError; - - /** Used for built-in method references. */ - var arrayProto = context.Array.prototype, - objectProto = context.Object.prototype, - stringProto = context.String.prototype; - - /** Used to detect overreaching core-js shims. */ - var coreJsData = context['__core-js_shared__']; - - /** Used to detect methods masquerading as native. */ - var maskSrcKey = (function() { - var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || ''); - return uid ? ('Symbol(src)_1.' + uid) : ''; - }()); - - /** Used to resolve the decompiled source of functions. */ - var funcToString = context.Function.prototype.toString; - - /** Used to check objects for own properties. */ - var hasOwnProperty = objectProto.hasOwnProperty; - - /** Used to generate unique IDs. */ - var idCounter = 0; - - /** Used to infer the `Object` constructor. */ - var objectCtorString = funcToString.call(Object); - - /** - * Used to resolve the - * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring) - * of values. - */ - var objectToString = objectProto.toString; - - /** Used to restore the original `_` reference in `_.noConflict`. */ - var oldDash = root._; - - /** Used to detect if a method is native. */ - var reIsNative = RegExp('^' + - funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&') - .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$' - ); - - /** Built-in value references. */ - var Buffer = moduleExports ? context.Buffer : undefined, - Reflect = context.Reflect, - Symbol = context.Symbol, - Uint8Array = context.Uint8Array, - enumerate = Reflect ? Reflect.enumerate : undefined, - iteratorSymbol = Symbol ? Symbol.iterator : undefined, - objectCreate = context.Object.create, - propertyIsEnumerable = objectProto.propertyIsEnumerable, - splice = arrayProto.splice, - spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined; - - /** Built-in method references that are mockable. */ - var clearTimeout = function(id) { return context.clearTimeout.call(root, id); }, - setTimeout = function(func, wait) { return context.setTimeout.call(root, func, wait); }; - - /* Built-in method references for those with the same name as other `lodash` methods. */ - var nativeCeil = Math.ceil, - nativeFloor = Math.floor, - nativeGetPrototype = Object.getPrototypeOf, - nativeGetSymbols = Object.getOwnPropertySymbols, - nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined, - nativeIsFinite = context.isFinite, - nativeJoin = arrayProto.join, - nativeKeys = Object.keys, - nativeMax = Math.max, - nativeMin = Math.min, - nativeParseInt = context.parseInt, - nativeRandom = Math.random, - nativeReplace = stringProto.replace, - nativeReverse = arrayProto.reverse, - nativeSplit = stringProto.split; - - /* Built-in method references that are verified to be native. */ - var DataView = getNative(context, 'DataView'), - Map = getNative(context, 'Map'), - Promise = getNative(context, 'Promise'), - Set = getNative(context, 'Set'), - WeakMap = getNative(context, 'WeakMap'), - nativeCreate = getNative(context.Object, 'create'); - - /* Used to set `toString` methods. */ - var defineProperty = (function() { - var func = getNative(context.Object, 'defineProperty'), - name = getNative.name; - - return (name && name.length > 2) ? func : undefined; - }()); - - /** Used to store function metadata. */ - var metaMap = WeakMap && new WeakMap; - - /** Detect if properties shadowing those on `Object.prototype` are non-enumerable. */ - var nonEnumShadows = !propertyIsEnumerable.call({ 'valueOf': 1 }, 'valueOf'); - - /** Used to lookup unminified function names. */ - var realNames = {}; - - /** Used to detect maps, sets, and weakmaps. */ - var dataViewCtorString = toSource(DataView), - mapCtorString = toSource(Map), - promiseCtorString = toSource(Promise), - setCtorString = toSource(Set), - weakMapCtorString = toSource(WeakMap); - - /** Used to convert symbols to primitives and strings. */ - var symbolProto = Symbol ? Symbol.prototype : undefined, - symbolValueOf = symbolProto ? symbolProto.valueOf : undefined, - symbolToString = symbolProto ? symbolProto.toString : undefined; - - /*------------------------------------------------------------------------*/ - - /** - * Creates a `lodash` object which wraps `value` to enable implicit method - * chain sequences. Methods that operate on and return arrays, collections, - * and functions can be chained together. Methods that retrieve a single value - * or may return a primitive value will automatically end the chain sequence - * and return the unwrapped value. Otherwise, the value must be unwrapped - * with `_#value`. - * - * Explicit chain sequences, which must be unwrapped with `_#value`, may be - * enabled using `_.chain`. - * - * The execution of chained methods is lazy, that is, it's deferred until - * `_#value` is implicitly or explicitly called. - * - * Lazy evaluation allows several methods to support shortcut fusion. - * Shortcut fusion is an optimization to merge iteratee calls; this avoids - * the creation of intermediate arrays and can greatly reduce the number of - * iteratee executions. Sections of a chain sequence qualify for shortcut - * fusion if the section is applied to an array of at least `200` elements - * and any iteratees accept only one argument. The heuristic for whether a - * section qualifies for shortcut fusion is subject to change. - * - * Chaining is supported in custom builds as long as the `_#value` method is - * directly or indirectly included in the build. - * - * In addition to lodash methods, wrappers have `Array` and `String` methods. - * - * The wrapper `Array` methods are: - * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift` - * - * The wrapper `String` methods are: - * `replace` and `split` - * - * The wrapper methods that support shortcut fusion are: - * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`, - * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`, - * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray` - * - * The chainable wrapper methods are: - * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`, - * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`, - * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`, - * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`, - * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`, - * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`, - * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`, - * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`, - * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`, - * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`, - * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`, - * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`, - * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`, - * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`, - * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`, - * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`, - * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`, - * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`, - * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`, - * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`, - * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`, - * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`, - * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`, - * `zipObject`, `zipObjectDeep`, and `zipWith` - * - * The wrapper methods that are **not** chainable by default are: - * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`, - * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`, - * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`, - * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`, - * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`, - * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`, - * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`, - * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`, - * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`, - * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`, - * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`, - * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`, - * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`, - * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`, - * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`, - * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`, - * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`, - * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`, - * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`, - * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`, - * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`, - * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`, - * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`, - * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`, - * `upperFirst`, `value`, and `words` - * - * @name _ - * @constructor - * @category Seq - * @param {*} value The value to wrap in a `lodash` instance. - * @returns {Object} Returns the new `lodash` wrapper instance. - * @example - * - * function square(n) { - * return n * n; - * } - * - * var wrapped = _([1, 2, 3]); - * - * // Returns an unwrapped value. - * wrapped.reduce(_.add); - * // => 6 - * - * // Returns a wrapped value. - * var squares = wrapped.map(square); - * - * _.isArray(squares); - * // => false - * - * _.isArray(squares.value()); - * // => true - */ - function lodash(value) { - if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) { - if (value instanceof LodashWrapper) { - return value; - } - if (hasOwnProperty.call(value, '__wrapped__')) { - return wrapperClone(value); - } - } - return new LodashWrapper(value); - } - - /** - * The function whose prototype chain sequence wrappers inherit from. - * - * @private - */ - function baseLodash() { - // No operation performed. - } - - /** - * The base constructor for creating `lodash` wrapper objects. - * - * @private - * @param {*} value The value to wrap. - * @param {boolean} [chainAll] Enable explicit method chain sequences. - */ - function LodashWrapper(value, chainAll) { - this.__wrapped__ = value; - this.__actions__ = []; - this.__chain__ = !!chainAll; - this.__index__ = 0; - this.__values__ = undefined; - } - - /** - * By default, the template delimiters used by lodash are like those in - * embedded Ruby (ERB). Change the following template settings to use - * alternative delimiters. - * - * @static - * @memberOf _ - * @type {Object} - */ - lodash.templateSettings = { - - /** - * Used to detect `data` property values to be HTML-escaped. - * - * @memberOf _.templateSettings - * @type {RegExp} - */ - 'escape': reEscape, - - /** - * Used to detect code to be evaluated. - * - * @memberOf _.templateSettings - * @type {RegExp} - */ - 'evaluate': reEvaluate, - - /** - * Used to detect `data` property values to inject. - * - * @memberOf _.templateSettings - * @type {RegExp} - */ - 'interpolate': reInterpolate, - - /** - * Used to reference the data object in the template text. - * - * @memberOf _.templateSettings - * @type {string} - */ - 'variable': '', - - /** - * Used to import variables into the compiled template. - * - * @memberOf _.templateSettings - * @type {Object} - */ - 'imports': { - - /** - * A reference to the `lodash` function. - * - * @memberOf _.templateSettings.imports - * @type {Function} - */ - '_': lodash - } - }; - - // Ensure wrappers are instances of `baseLodash`. - lodash.prototype = baseLodash.prototype; - lodash.prototype.constructor = lodash; - - LodashWrapper.prototype = baseCreate(baseLodash.prototype); - LodashWrapper.prototype.constructor = LodashWrapper; - - /*------------------------------------------------------------------------*/ - - /** - * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation. - * - * @private - * @constructor - * @param {*} value The value to wrap. - */ - function LazyWrapper(value) { - this.__wrapped__ = value; - this.__actions__ = []; - this.__dir__ = 1; - this.__filtered__ = false; - this.__iteratees__ = []; - this.__takeCount__ = MAX_ARRAY_LENGTH; - this.__views__ = []; - } - - /** - * Creates a clone of the lazy wrapper object. - * - * @private - * @name clone - * @memberOf LazyWrapper - * @returns {Object} Returns the cloned `LazyWrapper` object. - */ - function lazyClone() { - var result = new LazyWrapper(this.__wrapped__); - result.__actions__ = copyArray(this.__actions__); - result.__dir__ = this.__dir__; - result.__filtered__ = this.__filtered__; - result.__iteratees__ = copyArray(this.__iteratees__); - result.__takeCount__ = this.__takeCount__; - result.__views__ = copyArray(this.__views__); - return result; - } - - /** - * Reverses the direction of lazy iteration. - * - * @private - * @name reverse - * @memberOf LazyWrapper - * @returns {Object} Returns the new reversed `LazyWrapper` object. - */ - function lazyReverse() { - if (this.__filtered__) { - var result = new LazyWrapper(this); - result.__dir__ = -1; - result.__filtered__ = true; - } else { - result = this.clone(); - result.__dir__ *= -1; - } - return result; - } - - /** - * Extracts the unwrapped value from its lazy wrapper. - * - * @private - * @name value - * @memberOf LazyWrapper - * @returns {*} Returns the unwrapped value. - */ - function lazyValue() { - var array = this.__wrapped__.value(), - dir = this.__dir__, - isArr = isArray(array), - isRight = dir < 0, - arrLength = isArr ? array.length : 0, - view = getView(0, arrLength, this.__views__), - start = view.start, - end = view.end, - length = end - start, - index = isRight ? end : (start - 1), - iteratees = this.__iteratees__, - iterLength = iteratees.length, - resIndex = 0, - takeCount = nativeMin(length, this.__takeCount__); - - if (!isArr || arrLength < LARGE_ARRAY_SIZE || - (arrLength == length && takeCount == length)) { - return baseWrapperValue(array, this.__actions__); - } - var result = []; - - outer: - while (length-- && resIndex < takeCount) { - index += dir; - - var iterIndex = -1, - value = array[index]; - - while (++iterIndex < iterLength) { - var data = iteratees[iterIndex], - iteratee = data.iteratee, - type = data.type, - computed = iteratee(value); - - if (type == LAZY_MAP_FLAG) { - value = computed; - } else if (!computed) { - if (type == LAZY_FILTER_FLAG) { - continue outer; - } else { - break outer; - } - } - } - result[resIndex++] = value; - } - return result; - } - - // Ensure `LazyWrapper` is an instance of `baseLodash`. - LazyWrapper.prototype = baseCreate(baseLodash.prototype); - LazyWrapper.prototype.constructor = LazyWrapper; - - /*------------------------------------------------------------------------*/ - - /** - * Creates a hash object. - * - * @private - * @constructor - * @param {Array} [entries] The key-value pairs to cache. - */ - function Hash(entries) { - var index = -1, - length = entries ? entries.length : 0; - - this.clear(); - while (++index < length) { - var entry = entries[index]; - this.set(entry[0], entry[1]); - } - } - - /** - * Removes all key-value entries from the hash. - * - * @private - * @name clear - * @memberOf Hash - */ - function hashClear() { - this.__data__ = nativeCreate ? nativeCreate(null) : {}; - } - - /** - * Removes `key` and its value from the hash. - * - * @private - * @name delete - * @memberOf Hash - * @param {Object} hash The hash to modify. - * @param {string} key The key of the value to remove. - * @returns {boolean} Returns `true` if the entry was removed, else `false`. - */ - function hashDelete(key) { - return this.has(key) && delete this.__data__[key]; - } - - /** - * Gets the hash value for `key`. - * - * @private - * @name get - * @memberOf Hash - * @param {string} key The key of the value to get. - * @returns {*} Returns the entry value. - */ - function hashGet(key) { - var data = this.__data__; - if (nativeCreate) { - var result = data[key]; - return result === HASH_UNDEFINED ? undefined : result; - } - return hasOwnProperty.call(data, key) ? data[key] : undefined; - } - - /** - * Checks if a hash value for `key` exists. - * - * @private - * @name has - * @memberOf Hash - * @param {string} key The key of the entry to check. - * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. - */ - function hashHas(key) { - var data = this.__data__; - return nativeCreate ? data[key] !== undefined : hasOwnProperty.call(data, key); - } - - /** - * Sets the hash `key` to `value`. - * - * @private - * @name set - * @memberOf Hash - * @param {string} key The key of the value to set. - * @param {*} value The value to set. - * @returns {Object} Returns the hash instance. - */ - function hashSet(key, value) { - var data = this.__data__; - data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value; - return this; - } - - // Add methods to `Hash`. - Hash.prototype.clear = hashClear; - Hash.prototype['delete'] = hashDelete; - Hash.prototype.get = hashGet; - Hash.prototype.has = hashHas; - Hash.prototype.set = hashSet; - - /*------------------------------------------------------------------------*/ - - /** - * Creates an list cache object. - * - * @private - * @constructor - * @param {Array} [entries] The key-value pairs to cache. - */ - function ListCache(entries) { - var index = -1, - length = entries ? entries.length : 0; - - this.clear(); - while (++index < length) { - var entry = entries[index]; - this.set(entry[0], entry[1]); - } - } - - /** - * Removes all key-value entries from the list cache. - * - * @private - * @name clear - * @memberOf ListCache - */ - function listCacheClear() { - this.__data__ = []; - } - - /** - * Removes `key` and its value from the list cache. - * - * @private - * @name delete - * @memberOf ListCache - * @param {string} key The key of the value to remove. - * @returns {boolean} Returns `true` if the entry was removed, else `false`. - */ - function listCacheDelete(key) { - var data = this.__data__, - index = assocIndexOf(data, key); - - if (index < 0) { - return false; - } - var lastIndex = data.length - 1; - if (index == lastIndex) { - data.pop(); - } else { - splice.call(data, index, 1); - } - return true; - } - - /** - * Gets the list cache value for `key`. - * - * @private - * @name get - * @memberOf ListCache - * @param {string} key The key of the value to get. - * @returns {*} Returns the entry value. - */ - function listCacheGet(key) { - var data = this.__data__, - index = assocIndexOf(data, key); - - return index < 0 ? undefined : data[index][1]; - } - - /** - * Checks if a list cache value for `key` exists. - * - * @private - * @name has - * @memberOf ListCache - * @param {string} key The key of the entry to check. - * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. - */ - function listCacheHas(key) { - return assocIndexOf(this.__data__, key) > -1; - } - - /** - * Sets the list cache `key` to `value`. - * - * @private - * @name set - * @memberOf ListCache - * @param {string} key The key of the value to set. - * @param {*} value The value to set. - * @returns {Object} Returns the list cache instance. - */ - function listCacheSet(key, value) { - var data = this.__data__, - index = assocIndexOf(data, key); - - if (index < 0) { - data.push([key, value]); - } else { - data[index][1] = value; - } - return this; - } - - // Add methods to `ListCache`. - ListCache.prototype.clear = listCacheClear; - ListCache.prototype['delete'] = listCacheDelete; - ListCache.prototype.get = listCacheGet; - ListCache.prototype.has = listCacheHas; - ListCache.prototype.set = listCacheSet; - - /*------------------------------------------------------------------------*/ - - /** - * Creates a map cache object to store key-value pairs. - * - * @private - * @constructor - * @param {Array} [entries] The key-value pairs to cache. - */ - function MapCache(entries) { - var index = -1, - length = entries ? entries.length : 0; - - this.clear(); - while (++index < length) { - var entry = entries[index]; - this.set(entry[0], entry[1]); - } - } - - /** - * Removes all key-value entries from the map. - * - * @private - * @name clear - * @memberOf MapCache - */ - function mapCacheClear() { - this.__data__ = { - 'hash': new Hash, - 'map': new (Map || ListCache), - 'string': new Hash - }; - } - - /** - * Removes `key` and its value from the map. - * - * @private - * @name delete - * @memberOf MapCache - * @param {string} key The key of the value to remove. - * @returns {boolean} Returns `true` if the entry was removed, else `false`. - */ - function mapCacheDelete(key) { - return getMapData(this, key)['delete'](key); - } - - /** - * Gets the map value for `key`. - * - * @private - * @name get - * @memberOf MapCache - * @param {string} key The key of the value to get. - * @returns {*} Returns the entry value. - */ - function mapCacheGet(key) { - return getMapData(this, key).get(key); - } - - /** - * Checks if a map value for `key` exists. - * - * @private - * @name has - * @memberOf MapCache - * @param {string} key The key of the entry to check. - * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. - */ - function mapCacheHas(key) { - return getMapData(this, key).has(key); - } - - /** - * Sets the map `key` to `value`. - * - * @private - * @name set - * @memberOf MapCache - * @param {string} key The key of the value to set. - * @param {*} value The value to set. - * @returns {Object} Returns the map cache instance. - */ - function mapCacheSet(key, value) { - getMapData(this, key).set(key, value); - return this; - } - - // Add methods to `MapCache`. - MapCache.prototype.clear = mapCacheClear; - MapCache.prototype['delete'] = mapCacheDelete; - MapCache.prototype.get = mapCacheGet; - MapCache.prototype.has = mapCacheHas; - MapCache.prototype.set = mapCacheSet; - - /*------------------------------------------------------------------------*/ - - /** - * - * Creates an array cache object to store unique values. - * - * @private - * @constructor - * @param {Array} [values] The values to cache. - */ - function SetCache(values) { - var index = -1, - length = values ? values.length : 0; - - this.__data__ = new MapCache; - while (++index < length) { - this.add(values[index]); - } - } - - /** - * Adds `value` to the array cache. - * - * @private - * @name add - * @memberOf SetCache - * @alias push - * @param {*} value The value to cache. - * @returns {Object} Returns the cache instance. - */ - function setCacheAdd(value) { - this.__data__.set(value, HASH_UNDEFINED); - return this; - } - - /** - * Checks if `value` is in the array cache. - * - * @private - * @name has - * @memberOf SetCache - * @param {*} value The value to search for. - * @returns {number} Returns `true` if `value` is found, else `false`. - */ - function setCacheHas(value) { - return this.__data__.has(value); - } - - // Add methods to `SetCache`. - SetCache.prototype.add = SetCache.prototype.push = setCacheAdd; - SetCache.prototype.has = setCacheHas; - - /*------------------------------------------------------------------------*/ - - /** - * Creates a stack cache object to store key-value pairs. - * - * @private - * @constructor - * @param {Array} [entries] The key-value pairs to cache. - */ - function Stack(entries) { - this.__data__ = new ListCache(entries); - } - - /** - * Removes all key-value entries from the stack. - * - * @private - * @name clear - * @memberOf Stack - */ - function stackClear() { - this.__data__ = new ListCache; - } - - /** - * Removes `key` and its value from the stack. - * - * @private - * @name delete - * @memberOf Stack - * @param {string} key The key of the value to remove. - * @returns {boolean} Returns `true` if the entry was removed, else `false`. - */ - function stackDelete(key) { - return this.__data__['delete'](key); - } - - /** - * Gets the stack value for `key`. - * - * @private - * @name get - * @memberOf Stack - * @param {string} key The key of the value to get. - * @returns {*} Returns the entry value. - */ - function stackGet(key) { - return this.__data__.get(key); - } - - /** - * Checks if a stack value for `key` exists. - * - * @private - * @name has - * @memberOf Stack - * @param {string} key The key of the entry to check. - * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. - */ - function stackHas(key) { - return this.__data__.has(key); - } - - /** - * Sets the stack `key` to `value`. - * - * @private - * @name set - * @memberOf Stack - * @param {string} key The key of the value to set. - * @param {*} value The value to set. - * @returns {Object} Returns the stack cache instance. - */ - function stackSet(key, value) { - var cache = this.__data__; - if (cache instanceof ListCache) { - var pairs = cache.__data__; - if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) { - pairs.push([key, value]); - return this; - } - cache = this.__data__ = new MapCache(pairs); - } - cache.set(key, value); - return this; - } - - // Add methods to `Stack`. - Stack.prototype.clear = stackClear; - Stack.prototype['delete'] = stackDelete; - Stack.prototype.get = stackGet; - Stack.prototype.has = stackHas; - Stack.prototype.set = stackSet; - - /*------------------------------------------------------------------------*/ - - /** - * Used by `_.defaults` to customize its `_.assignIn` use. - * - * @private - * @param {*} objValue The destination value. - * @param {*} srcValue The source value. - * @param {string} key The key of the property to assign. - * @param {Object} object The parent object of `objValue`. - * @returns {*} Returns the value to assign. - */ - function assignInDefaults(objValue, srcValue, key, object) { - if (objValue === undefined || - (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) { - return srcValue; - } - return objValue; - } - - /** - * This function is like `assignValue` except that it doesn't assign - * `undefined` values. - * - * @private - * @param {Object} object The object to modify. - * @param {string} key The key of the property to assign. - * @param {*} value The value to assign. - */ - function assignMergeValue(object, key, value) { - if ((value !== undefined && !eq(object[key], value)) || - (typeof key == 'number' && value === undefined && !(key in object))) { - object[key] = value; - } - } - - /** - * Assigns `value` to `key` of `object` if the existing value is not equivalent - * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero) - * for equality comparisons. - * - * @private - * @param {Object} object The object to modify. - * @param {string} key The key of the property to assign. - * @param {*} value The value to assign. - */ - function assignValue(object, key, value) { - var objValue = object[key]; - if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) || - (value === undefined && !(key in object))) { - object[key] = value; - } - } - - /** - * Gets the index at which the `key` is found in `array` of key-value pairs. - * - * @private - * @param {Array} array The array to search. - * @param {*} key The key to search for. - * @returns {number} Returns the index of the matched value, else `-1`. - */ - function assocIndexOf(array, key) { - var length = array.length; - while (length--) { - if (eq(array[length][0], key)) { - return length; - } - } - return -1; - } - - /** - * Aggregates elements of `collection` on `accumulator` with keys transformed - * by `iteratee` and values set by `setter`. - * - * @private - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} setter The function to set `accumulator` values. - * @param {Function} iteratee The iteratee to transform keys. - * @param {Object} accumulator The initial aggregated object. - * @returns {Function} Returns `accumulator`. - */ - function baseAggregator(collection, setter, iteratee, accumulator) { - baseEach(collection, function(value, key, collection) { - setter(accumulator, value, iteratee(value), collection); - }); - return accumulator; - } - - /** - * The base implementation of `_.assign` without support for multiple sources - * or `customizer` functions. - * - * @private - * @param {Object} object The destination object. - * @param {Object} source The source object. - * @returns {Object} Returns `object`. - */ - function baseAssign(object, source) { - return object && copyObject(source, keys(source), object); - } - - /** - * The base implementation of `_.at` without support for individual paths. - * - * @private - * @param {Object} object The object to iterate over. - * @param {string[]} paths The property paths of elements to pick. - * @returns {Array} Returns the picked elements. - */ - function baseAt(object, paths) { - var index = -1, - isNil = object == null, - length = paths.length, - result = Array(length); - - while (++index < length) { - result[index] = isNil ? undefined : get(object, paths[index]); - } - return result; - } - - /** - * The base implementation of `_.clamp` which doesn't coerce arguments. - * - * @private - * @param {number} number The number to clamp. - * @param {number} [lower] The lower bound. - * @param {number} upper The upper bound. - * @returns {number} Returns the clamped number. - */ - function baseClamp(number, lower, upper) { - if (number === number) { - if (upper !== undefined) { - number = number <= upper ? number : upper; - } - if (lower !== undefined) { - number = number >= lower ? number : lower; - } - } - return number; - } - - /** - * The base implementation of `_.clone` and `_.cloneDeep` which tracks - * traversed objects. - * - * @private - * @param {*} value The value to clone. - * @param {boolean} [isDeep] Specify a deep clone. - * @param {boolean} [isFull] Specify a clone including symbols. - * @param {Function} [customizer] The function to customize cloning. - * @param {string} [key] The key of `value`. - * @param {Object} [object] The parent object of `value`. - * @param {Object} [stack] Tracks traversed objects and their clone counterparts. - * @returns {*} Returns the cloned value. - */ - function baseClone(value, isDeep, isFull, customizer, key, object, stack) { - var result; - if (customizer) { - result = object ? customizer(value, key, object, stack) : customizer(value); - } - if (result !== undefined) { - return result; - } - if (!isObject(value)) { - return value; - } - var isArr = isArray(value); - if (isArr) { - result = initCloneArray(value); - if (!isDeep) { - return copyArray(value, result); - } - } else { - var tag = getTag(value), - isFunc = tag == funcTag || tag == genTag; - - if (isBuffer(value)) { - return cloneBuffer(value, isDeep); - } - if (tag == objectTag || tag == argsTag || (isFunc && !object)) { - if (isHostObject(value)) { - return object ? value : {}; - } - result = initCloneObject(isFunc ? {} : value); - if (!isDeep) { - return copySymbols(value, baseAssign(result, value)); - } - } else { - if (!cloneableTags[tag]) { - return object ? value : {}; - } - result = initCloneByTag(value, tag, baseClone, isDeep); - } - } - // Check for circular references and return its corresponding clone. - stack || (stack = new Stack); - var stacked = stack.get(value); - if (stacked) { - return stacked; - } - stack.set(value, result); - - if (!isArr) { - var props = isFull ? getAllKeys(value) : keys(value); - } - arrayEach(props || value, function(subValue, key) { - if (props) { - key = subValue; - subValue = value[key]; - } - // Recursively populate clone (susceptible to call stack limits). - assignValue(result, key, baseClone(subValue, isDeep, isFull, customizer, key, value, stack)); - }); - return result; - } - - /** - * The base implementation of `_.conforms` which doesn't clone `source`. - * - * @private - * @param {Object} source The object of property predicates to conform to. - * @returns {Function} Returns the new spec function. - */ - function baseConforms(source) { - var props = keys(source); - return function(object) { - return baseConformsTo(object, source, props); - }; - } - - /** - * The base implementation of `_.conformsTo` which accepts `props` to check. - * - * @private - * @param {Object} object The object to inspect. - * @param {Object} source The object of property predicates to conform to. - * @returns {boolean} Returns `true` if `object` conforms, else `false`. - */ - function baseConformsTo(object, source, props) { - var length = props.length; - if (object == null) { - return !length; - } - var index = length; - while (index--) { - var key = props[index], - predicate = source[key], - value = object[key]; - - if ((value === undefined && - !(key in Object(object))) || !predicate(value)) { - return false; - } - } - return true; - } - - /** - * The base implementation of `_.create` without support for assigning - * properties to the created object. - * - * @private - * @param {Object} prototype The object to inherit from. - * @returns {Object} Returns the new object. - */ - function baseCreate(proto) { - return isObject(proto) ? objectCreate(proto) : {}; - } - - /** - * The base implementation of `_.delay` and `_.defer` which accepts `args` - * to provide to `func`. - * - * @private - * @param {Function} func The function to delay. - * @param {number} wait The number of milliseconds to delay invocation. - * @param {Array} args The arguments to provide to `func`. - * @returns {number} Returns the timer id. - */ - function baseDelay(func, wait, args) { - if (typeof func != 'function') { - throw new TypeError(FUNC_ERROR_TEXT); - } - return setTimeout(function() { func.apply(undefined, args); }, wait); - } - - /** - * The base implementation of methods like `_.difference` without support - * for excluding multiple arrays or iteratee shorthands. - * - * @private - * @param {Array} array The array to inspect. - * @param {Array} values The values to exclude. - * @param {Function} [iteratee] The iteratee invoked per element. - * @param {Function} [comparator] The comparator invoked per element. - * @returns {Array} Returns the new array of filtered values. - */ - function baseDifference(array, values, iteratee, comparator) { - var index = -1, - includes = arrayIncludes, - isCommon = true, - length = array.length, - result = [], - valuesLength = values.length; - - if (!length) { - return result; - } - if (iteratee) { - values = arrayMap(values, baseUnary(iteratee)); - } - if (comparator) { - includes = arrayIncludesWith; - isCommon = false; - } - else if (values.length >= LARGE_ARRAY_SIZE) { - includes = cacheHas; - isCommon = false; - values = new SetCache(values); - } - outer: - while (++index < length) { - var value = array[index], - computed = iteratee ? iteratee(value) : value; - - value = (comparator || value !== 0) ? value : 0; - if (isCommon && computed === computed) { - var valuesIndex = valuesLength; - while (valuesIndex--) { - if (values[valuesIndex] === computed) { - continue outer; - } - } - result.push(value); - } - else if (!includes(values, computed, comparator)) { - result.push(value); - } - } - return result; - } - - /** - * The base implementation of `_.forEach` without support for iteratee shorthands. - * - * @private - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @returns {Array|Object} Returns `collection`. - */ - var baseEach = createBaseEach(baseForOwn); - - /** - * The base implementation of `_.forEachRight` without support for iteratee shorthands. - * - * @private - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @returns {Array|Object} Returns `collection`. - */ - var baseEachRight = createBaseEach(baseForOwnRight, true); - - /** - * The base implementation of `_.every` without support for iteratee shorthands. - * - * @private - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} predicate The function invoked per iteration. - * @returns {boolean} Returns `true` if all elements pass the predicate check, - * else `false` - */ - function baseEvery(collection, predicate) { - var result = true; - baseEach(collection, function(value, index, collection) { - result = !!predicate(value, index, collection); - return result; - }); - return result; - } - - /** - * The base implementation of methods like `_.max` and `_.min` which accepts a - * `comparator` to determine the extremum value. - * - * @private - * @param {Array} array The array to iterate over. - * @param {Function} iteratee The iteratee invoked per iteration. - * @param {Function} comparator The comparator used to compare values. - * @returns {*} Returns the extremum value. - */ - function baseExtremum(array, iteratee, comparator) { - var index = -1, - length = array.length; - - while (++index < length) { - var value = array[index], - current = iteratee(value); - - if (current != null && (computed === undefined - ? (current === current && !isSymbol(current)) - : comparator(current, computed) - )) { - var computed = current, - result = value; - } - } - return result; - } - - /** - * The base implementation of `_.fill` without an iteratee call guard. - * - * @private - * @param {Array} array The array to fill. - * @param {*} value The value to fill `array` with. - * @param {number} [start=0] The start position. - * @param {number} [end=array.length] The end position. - * @returns {Array} Returns `array`. - */ - function baseFill(array, value, start, end) { - var length = array.length; - - start = toInteger(start); - if (start < 0) { - start = -start > length ? 0 : (length + start); - } - end = (end === undefined || end > length) ? length : toInteger(end); - if (end < 0) { - end += length; - } - end = start > end ? 0 : toLength(end); - while (start < end) { - array[start++] = value; - } - return array; - } - - /** - * The base implementation of `_.filter` without support for iteratee shorthands. - * - * @private - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} predicate The function invoked per iteration. - * @returns {Array} Returns the new filtered array. - */ - function baseFilter(collection, predicate) { - var result = []; - baseEach(collection, function(value, index, collection) { - if (predicate(value, index, collection)) { - result.push(value); - } - }); - return result; - } - - /** - * The base implementation of `_.flatten` with support for restricting flattening. - * - * @private - * @param {Array} array The array to flatten. - * @param {number} depth The maximum recursion depth. - * @param {boolean} [predicate=isFlattenable] The function invoked per iteration. - * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks. - * @param {Array} [result=[]] The initial result value. - * @returns {Array} Returns the new flattened array. - */ - function baseFlatten(array, depth, predicate, isStrict, result) { - var index = -1, - length = array.length; - - predicate || (predicate = isFlattenable); - result || (result = []); - - while (++index < length) { - var value = array[index]; - if (depth > 0 && predicate(value)) { - if (depth > 1) { - // Recursively flatten arrays (susceptible to call stack limits). - baseFlatten(value, depth - 1, predicate, isStrict, result); - } else { - arrayPush(result, value); - } - } else if (!isStrict) { - result[result.length] = value; - } - } - return result; - } - - /** - * 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(); - - /** - * This function is like `baseFor` except that it iterates over properties - * in the opposite order. - * - * @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 baseForRight = createBaseFor(true); - - /** - * 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); - } - - /** - * The base implementation of `_.forOwnRight` 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 baseForOwnRight(object, iteratee) { - return object && baseForRight(object, iteratee, keys); - } - - /** - * The base implementation of `_.functions` which creates an array of - * `object` function property names filtered from `props`. - * - * @private - * @param {Object} object The object to inspect. - * @param {Array} props The property names to filter. - * @returns {Array} Returns the function names. - */ - function baseFunctions(object, props) { - return arrayFilter(props, function(key) { - return isFunction(object[key]); - }); - } - - /** - * The base implementation of `_.get` without support for default values. - * - * @private - * @param {Object} object The object to query. - * @param {Array|string} path The path of the property to get. - * @returns {*} Returns the resolved value. - */ - function baseGet(object, path) { - path = isKey(path, object) ? [path] : castPath(path); - - var index = 0, - length = path.length; - - while (object != null && index < length) { - object = object[toKey(path[index++])]; - } - return (index && index == length) ? object : undefined; - } - - /** - * The base implementation of `getAllKeys` and `getAllKeysIn` which uses - * `keysFunc` and `symbolsFunc` to get the enumerable property names and - * symbols of `object`. - * - * @private - * @param {Object} object The object to query. - * @param {Function} keysFunc The function to get the keys of `object`. - * @param {Function} symbolsFunc The function to get the symbols of `object`. - * @returns {Array} Returns the array of property names and symbols. - */ - function baseGetAllKeys(object, keysFunc, symbolsFunc) { - var result = keysFunc(object); - return isArray(object) ? result : arrayPush(result, symbolsFunc(object)); - } - - /** - * The base implementation of `getTag`. - * - * @private - * @param {*} value The value to query. - * @returns {string} Returns the `toStringTag`. - */ - function baseGetTag(value) { - return objectToString.call(value); - } - - /** - * The base implementation of `_.gt` which doesn't coerce arguments. - * - * @private - * @param {*} value The value to compare. - * @param {*} other The other value to compare. - * @returns {boolean} Returns `true` if `value` is greater than `other`, - * else `false`. - */ - function baseGt(value, other) { - return value > other; - } - - /** - * 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)); - } - - /** - * The base implementation of `_.hasIn` 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 baseHasIn(object, key) { - return object != null && key in Object(object); - } - - /** - * The base implementation of `_.inRange` which doesn't coerce arguments. - * - * @private - * @param {number} number The number to check. - * @param {number} start The start of the range. - * @param {number} end The end of the range. - * @returns {boolean} Returns `true` if `number` is in the range, else `false`. - */ - function baseInRange(number, start, end) { - return number >= nativeMin(start, end) && number < nativeMax(start, end); - } - - /** - * The base implementation of methods like `_.intersection`, without support - * for iteratee shorthands, that accepts an array of arrays to inspect. - * - * @private - * @param {Array} arrays The arrays to inspect. - * @param {Function} [iteratee] The iteratee invoked per element. - * @param {Function} [comparator] The comparator invoked per element. - * @returns {Array} Returns the new array of shared values. - */ - function baseIntersection(arrays, iteratee, comparator) { - var includes = comparator ? arrayIncludesWith : arrayIncludes, - length = arrays[0].length, - othLength = arrays.length, - othIndex = othLength, - caches = Array(othLength), - maxLength = Infinity, - result = []; - - while (othIndex--) { - var array = arrays[othIndex]; - if (othIndex && iteratee) { - array = arrayMap(array, baseUnary(iteratee)); - } - maxLength = nativeMin(array.length, maxLength); - caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120)) - ? new SetCache(othIndex && array) - : undefined; - } - array = arrays[0]; - - var index = -1, - seen = caches[0]; - - outer: - while (++index < length && result.length < maxLength) { - var value = array[index], - computed = iteratee ? iteratee(value) : value; - - value = (comparator || value !== 0) ? value : 0; - if (!(seen - ? cacheHas(seen, computed) - : includes(result, computed, comparator) - )) { - othIndex = othLength; - while (--othIndex) { - var cache = caches[othIndex]; - if (!(cache - ? cacheHas(cache, computed) - : includes(arrays[othIndex], computed, comparator)) - ) { - continue outer; - } - } - if (seen) { - seen.push(computed); - } - result.push(value); - } - } - return result; - } - - /** - * The base implementation of `_.invert` and `_.invertBy` which inverts - * `object` with values transformed by `iteratee` and set by `setter`. - * - * @private - * @param {Object} object The object to iterate over. - * @param {Function} setter The function to set `accumulator` values. - * @param {Function} iteratee The iteratee to transform values. - * @param {Object} accumulator The initial inverted object. - * @returns {Function} Returns `accumulator`. - */ - function baseInverter(object, setter, iteratee, accumulator) { - baseForOwn(object, function(value, key, object) { - setter(accumulator, iteratee(value), key, object); - }); - return accumulator; - } - - /** - * The base implementation of `_.invoke` without support for individual - * method arguments. - * - * @private - * @param {Object} object The object to query. - * @param {Array|string} path The path of the method to invoke. - * @param {Array} args The arguments to invoke the method with. - * @returns {*} Returns the result of the invoked method. - */ - function baseInvoke(object, path, args) { - if (!isKey(path, object)) { - path = castPath(path); - object = parent(object, path); - path = last(path); - } - var func = object == null ? object : object[toKey(path)]; - return func == null ? undefined : apply(func, object, args); - } - - /** - * The base implementation of `_.isArrayBuffer` without Node.js optimizations. - * - * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`. - */ - function baseIsArrayBuffer(value) { - return isObjectLike(value) && objectToString.call(value) == arrayBufferTag; - } - - /** - * The base implementation of `_.isDate` without Node.js optimizations. - * - * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a date object, else `false`. - */ - function baseIsDate(value) { - return isObjectLike(value) && objectToString.call(value) == dateTag; - } - - /** - * The base implementation of `_.isEqual` which supports partial comparisons - * and tracks traversed objects. - * - * @private - * @param {*} value The value to compare. - * @param {*} other The other value to compare. - * @param {Function} [customizer] The function to customize comparisons. - * @param {boolean} [bitmask] The bitmask of comparison flags. - * The bitmask may be composed of the following flags: - * 1 - Unordered comparison - * 2 - Partial comparison - * @param {Object} [stack] Tracks traversed `value` and `other` objects. - * @returns {boolean} Returns `true` if the values are equivalent, else `false`. - */ - function baseIsEqual(value, other, customizer, bitmask, stack) { - if (value === other) { - return true; - } - if (value == null || other == null || (!isObject(value) && !isObjectLike(other))) { - return value !== value && other !== other; - } - return baseIsEqualDeep(value, other, baseIsEqual, customizer, bitmask, stack); - } - - /** - * A specialized version of `baseIsEqual` for arrays and objects which performs - * deep comparisons and tracks traversed objects enabling objects with circular - * references to be compared. - * - * @private - * @param {Object} object The object to compare. - * @param {Object} other The other object to compare. - * @param {Function} equalFunc The function to determine equivalents of values. - * @param {Function} [customizer] The function to customize comparisons. - * @param {number} [bitmask] The bitmask of comparison flags. See `baseIsEqual` - * for more details. - * @param {Object} [stack] Tracks traversed `object` and `other` objects. - * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. - */ - function baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) { - var objIsArr = isArray(object), - othIsArr = isArray(other), - objTag = arrayTag, - othTag = arrayTag; - - if (!objIsArr) { - objTag = getTag(object); - objTag = objTag == argsTag ? objectTag : objTag; - } - if (!othIsArr) { - othTag = getTag(other); - othTag = othTag == argsTag ? objectTag : othTag; - } - var objIsObj = objTag == objectTag && !isHostObject(object), - othIsObj = othTag == objectTag && !isHostObject(other), - isSameTag = objTag == othTag; - - if (isSameTag && !objIsObj) { - stack || (stack = new Stack); - return (objIsArr || isTypedArray(object)) - ? equalArrays(object, other, equalFunc, customizer, bitmask, stack) - : equalByTag(object, other, objTag, equalFunc, customizer, bitmask, stack); - } - if (!(bitmask & PARTIAL_COMPARE_FLAG)) { - var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'), - othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__'); - - if (objIsWrapped || othIsWrapped) { - var objUnwrapped = objIsWrapped ? object.value() : object, - othUnwrapped = othIsWrapped ? other.value() : other; - - stack || (stack = new Stack); - return equalFunc(objUnwrapped, othUnwrapped, customizer, bitmask, stack); - } - } - if (!isSameTag) { - return false; - } - stack || (stack = new Stack); - return equalObjects(object, other, equalFunc, customizer, bitmask, stack); - } - - /** - * The base implementation of `_.isMap` without Node.js optimizations. - * - * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a map, else `false`. - */ - function baseIsMap(value) { - return isObjectLike(value) && getTag(value) == mapTag; - } - - /** - * The base implementation of `_.isMatch` without support for iteratee shorthands. - * - * @private - * @param {Object} object The object to inspect. - * @param {Object} source The object of property values to match. - * @param {Array} matchData The property names, values, and compare flags to match. - * @param {Function} [customizer] The function to customize comparisons. - * @returns {boolean} Returns `true` if `object` is a match, else `false`. - */ - function baseIsMatch(object, source, matchData, customizer) { - var index = matchData.length, - length = index, - noCustomizer = !customizer; - - if (object == null) { - return !length; - } - object = Object(object); - while (index--) { - var data = matchData[index]; - if ((noCustomizer && data[2]) - ? data[1] !== object[data[0]] - : !(data[0] in object) - ) { - return false; - } - } - while (++index < length) { - data = matchData[index]; - var key = data[0], - objValue = object[key], - srcValue = data[1]; - - if (noCustomizer && data[2]) { - if (objValue === undefined && !(key in object)) { - return false; - } - } else { - var stack = new Stack; - if (customizer) { - var result = customizer(objValue, srcValue, key, object, source, stack); - } - if (!(result === undefined - ? baseIsEqual(srcValue, objValue, customizer, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG, stack) - : result - )) { - return false; - } - } - } - return true; - } - - /** - * The base implementation of `_.isNative` without bad shim checks. - * - * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a native function, - * else `false`. - */ - function baseIsNative(value) { - if (!isObject(value) || isMasked(value)) { - return false; - } - var pattern = (isFunction(value) || isHostObject(value)) ? reIsNative : reIsHostCtor; - return pattern.test(toSource(value)); - } - - /** - * The base implementation of `_.isRegExp` without Node.js optimizations. - * - * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a regexp, else `false`. - */ - function baseIsRegExp(value) { - return isObject(value) && objectToString.call(value) == regexpTag; - } - - /** - * The base implementation of `_.isSet` without Node.js optimizations. - * - * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a set, else `false`. - */ - function baseIsSet(value) { - return isObjectLike(value) && getTag(value) == setTag; - } - - /** - * The base implementation of `_.isTypedArray` without Node.js optimizations. - * - * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a typed array, else `false`. - */ - function baseIsTypedArray(value) { - return isObjectLike(value) && - isLength(value.length) && !!typedArrayTags[objectToString.call(value)]; - } - - /** - * The base implementation of `_.iteratee`. - * - * @private - * @param {*} [value=_.identity] The value to convert to an iteratee. - * @returns {Function} Returns the iteratee. - */ - function baseIteratee(value) { - // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9. - // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details. - if (typeof value == 'function') { - return value; - } - if (value == null) { - return identity; - } - if (typeof value == 'object') { - return isArray(value) - ? baseMatchesProperty(value[0], value[1]) - : baseMatches(value); - } - return property(value); - } - - /** - * 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. - */ - var baseKeys = overArg(nativeKeys, Object); - - /** - * The base implementation of `_.keysIn` 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 baseKeysIn(object) { - object = object == null ? object : Object(object); - - var result = []; - for (var key in object) { - result.push(key); - } - return result; - } - - // Fallback for IE < 9 with es6-shim. - if (enumerate && !propertyIsEnumerable.call({ 'valueOf': 1 }, 'valueOf')) { - baseKeysIn = function(object) { - return iteratorToArray(enumerate(object)); - }; - } - - /** - * The base implementation of `_.lt` which doesn't coerce arguments. - * - * @private - * @param {*} value The value to compare. - * @param {*} other The other value to compare. - * @returns {boolean} Returns `true` if `value` is less than `other`, - * else `false`. - */ - function baseLt(value, other) { - return value < other; - } - - /** - * The base implementation of `_.map` without support for iteratee shorthands. - * - * @private - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @returns {Array} Returns the new mapped array. - */ - function baseMap(collection, iteratee) { - var index = -1, - result = isArrayLike(collection) ? Array(collection.length) : []; - - baseEach(collection, function(value, key, collection) { - result[++index] = iteratee(value, key, collection); - }); - return result; - } - - /** - * The base implementation of `_.matches` which doesn't clone `source`. - * - * @private - * @param {Object} source The object of property values to match. - * @returns {Function} Returns the new spec function. - */ - function baseMatches(source) { - var matchData = getMatchData(source); - if (matchData.length == 1 && matchData[0][2]) { - return matchesStrictComparable(matchData[0][0], matchData[0][1]); - } - return function(object) { - return object === source || baseIsMatch(object, source, matchData); - }; - } - - /** - * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`. - * - * @private - * @param {string} path The path of the property to get. - * @param {*} srcValue The value to match. - * @returns {Function} Returns the new spec function. - */ - function baseMatchesProperty(path, srcValue) { - if (isKey(path) && isStrictComparable(srcValue)) { - return matchesStrictComparable(toKey(path), srcValue); - } - return function(object) { - var objValue = get(object, path); - return (objValue === undefined && objValue === srcValue) - ? hasIn(object, path) - : baseIsEqual(srcValue, objValue, undefined, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG); - }; - } - - /** - * The base implementation of `_.merge` without support for multiple sources. - * - * @private - * @param {Object} object The destination object. - * @param {Object} source The source object. - * @param {number} srcIndex The index of `source`. - * @param {Function} [customizer] The function to customize merged values. - * @param {Object} [stack] Tracks traversed source values and their merged - * counterparts. - */ - function baseMerge(object, source, srcIndex, customizer, stack) { - if (object === source) { - return; - } - if (!(isArray(source) || isTypedArray(source))) { - var props = keysIn(source); - } - arrayEach(props || source, function(srcValue, key) { - if (props) { - key = srcValue; - srcValue = source[key]; - } - if (isObject(srcValue)) { - stack || (stack = new Stack); - baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack); - } - else { - var newValue = customizer - ? customizer(object[key], srcValue, (key + ''), object, source, stack) - : undefined; - - if (newValue === undefined) { - newValue = srcValue; - } - assignMergeValue(object, key, newValue); - } - }); - } - - /** - * A specialized version of `baseMerge` for arrays and objects which performs - * deep merges and tracks traversed objects enabling objects with circular - * references to be merged. - * - * @private - * @param {Object} object The destination object. - * @param {Object} source The source object. - * @param {string} key The key of the value to merge. - * @param {number} srcIndex The index of `source`. - * @param {Function} mergeFunc The function to merge values. - * @param {Function} [customizer] The function to customize assigned values. - * @param {Object} [stack] Tracks traversed source values and their merged - * counterparts. - */ - function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) { - var objValue = object[key], - srcValue = source[key], - stacked = stack.get(srcValue); - - if (stacked) { - assignMergeValue(object, key, stacked); - return; - } - var newValue = customizer - ? customizer(objValue, srcValue, (key + ''), object, source, stack) - : undefined; - - var isCommon = newValue === undefined; - - if (isCommon) { - newValue = srcValue; - if (isArray(srcValue) || isTypedArray(srcValue)) { - if (isArray(objValue)) { - newValue = objValue; - } - else if (isArrayLikeObject(objValue)) { - newValue = copyArray(objValue); - } - else { - isCommon = false; - newValue = baseClone(srcValue, true); - } - } - else if (isPlainObject(srcValue) || isArguments(srcValue)) { - if (isArguments(objValue)) { - newValue = toPlainObject(objValue); - } - else if (!isObject(objValue) || (srcIndex && isFunction(objValue))) { - isCommon = false; - newValue = baseClone(srcValue, true); - } - else { - newValue = objValue; - } - } - else { - isCommon = false; - } - } - if (isCommon) { - // Recursively merge objects and arrays (susceptible to call stack limits). - stack.set(srcValue, newValue); - mergeFunc(newValue, srcValue, srcIndex, customizer, stack); - stack['delete'](srcValue); - } - assignMergeValue(object, key, newValue); - } - - /** - * The base implementation of `_.nth` which doesn't coerce arguments. - * - * @private - * @param {Array} array The array to query. - * @param {number} n The index of the element to return. - * @returns {*} Returns the nth element of `array`. - */ - function baseNth(array, n) { - var length = array.length; - if (!length) { - return; - } - n += n < 0 ? length : 0; - return isIndex(n, length) ? array[n] : undefined; - } - - /** - * The base implementation of `_.orderBy` without param guards. - * - * @private - * @param {Array|Object} collection The collection to iterate over. - * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by. - * @param {string[]} orders The sort orders of `iteratees`. - * @returns {Array} Returns the new sorted array. - */ - function baseOrderBy(collection, iteratees, orders) { - var index = -1; - iteratees = arrayMap(iteratees.length ? iteratees : [identity], baseUnary(getIteratee())); - - var result = baseMap(collection, function(value, key, collection) { - var criteria = arrayMap(iteratees, function(iteratee) { - return iteratee(value); - }); - return { 'criteria': criteria, 'index': ++index, 'value': value }; - }); - - return baseSortBy(result, function(object, other) { - return compareMultiple(object, other, orders); - }); - } - - /** - * The base implementation of `_.pick` without support for individual - * property identifiers. - * - * @private - * @param {Object} object The source object. - * @param {string[]} props The property identifiers to pick. - * @returns {Object} Returns the new object. - */ - function basePick(object, props) { - object = Object(object); - return basePickBy(object, props, function(value, key) { - return key in object; - }); - } - - /** - * The base implementation of `_.pickBy` without support for iteratee shorthands. - * - * @private - * @param {Object} object The source object. - * @param {string[]} props The property identifiers to pick from. - * @param {Function} predicate The function invoked per property. - * @returns {Object} Returns the new object. - */ - function basePickBy(object, props, predicate) { - var index = -1, - length = props.length, - result = {}; - - while (++index < length) { - var key = props[index], - value = object[key]; - - if (predicate(value, key)) { - result[key] = value; - } - } - return result; - } - - /** - * A specialized version of `baseProperty` which supports deep paths. - * - * @private - * @param {Array|string} path The path of the property to get. - * @returns {Function} Returns the new accessor function. - */ - function basePropertyDeep(path) { - return function(object) { - return baseGet(object, path); - }; - } - - /** - * The base implementation of `_.pullAllBy` without support for iteratee - * shorthands. - * - * @private - * @param {Array} array The array to modify. - * @param {Array} values The values to remove. - * @param {Function} [iteratee] The iteratee invoked per element. - * @param {Function} [comparator] The comparator invoked per element. - * @returns {Array} Returns `array`. - */ - function basePullAll(array, values, iteratee, comparator) { - var indexOf = comparator ? baseIndexOfWith : baseIndexOf, - index = -1, - length = values.length, - seen = array; - - if (array === values) { - values = copyArray(values); - } - if (iteratee) { - seen = arrayMap(array, baseUnary(iteratee)); - } - while (++index < length) { - var fromIndex = 0, - value = values[index], - computed = iteratee ? iteratee(value) : value; - - while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) { - if (seen !== array) { - splice.call(seen, fromIndex, 1); - } - splice.call(array, fromIndex, 1); - } - } - return array; - } - - /** - * The base implementation of `_.pullAt` without support for individual - * indexes or capturing the removed elements. - * - * @private - * @param {Array} array The array to modify. - * @param {number[]} indexes The indexes of elements to remove. - * @returns {Array} Returns `array`. - */ - function basePullAt(array, indexes) { - var length = array ? indexes.length : 0, - lastIndex = length - 1; - - while (length--) { - var index = indexes[length]; - if (length == lastIndex || index !== previous) { - var previous = index; - if (isIndex(index)) { - splice.call(array, index, 1); - } - else if (!isKey(index, array)) { - var path = castPath(index), - object = parent(array, path); - - if (object != null) { - delete object[toKey(last(path))]; - } - } - else { - delete array[toKey(index)]; - } - } - } - return array; - } - - /** - * The base implementation of `_.random` without support for returning - * floating-point numbers. - * - * @private - * @param {number} lower The lower bound. - * @param {number} upper The upper bound. - * @returns {number} Returns the random number. - */ - function baseRandom(lower, upper) { - return lower + nativeFloor(nativeRandom() * (upper - lower + 1)); - } - - /** - * The base implementation of `_.range` and `_.rangeRight` which doesn't - * coerce arguments. - * - * @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(nativeCeil((end - start) / (step || 1)), 0), - result = Array(length); - - while (length--) { - result[fromRight ? length : ++index] = start; - start += step; - } - return result; - } - - /** - * The base implementation of `_.repeat` which doesn't coerce arguments. - * - * @private - * @param {string} string The string to repeat. - * @param {number} n The number of times to repeat the string. - * @returns {string} Returns the repeated string. - */ - function baseRepeat(string, n) { - var result = ''; - if (!string || n < 1 || n > MAX_SAFE_INTEGER) { - return result; - } - // Leverage the exponentiation by squaring algorithm for a faster repeat. - // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details. - do { - if (n % 2) { - result += string; - } - n = nativeFloor(n / 2); - if (n) { - string += string; - } - } while (n); - - return result; - } - - /** - * The base implementation of `_.rest` which doesn't validate or coerce arguments. - * - * @private - * @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. - */ - function baseRest(func, start) { - start = nativeMax(start === undefined ? (func.length - 1) : 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]; - } - index = -1; - var otherArgs = Array(start + 1); - while (++index < start) { - otherArgs[index] = args[index]; - } - otherArgs[start] = array; - return apply(func, this, otherArgs); - }; - } - - /** - * The base implementation of `_.set`. - * - * @private - * @param {Object} object The object to query. - * @param {Array|string} path The path of the property to set. - * @param {*} value The value to set. - * @param {Function} [customizer] The function to customize path creation. - * @returns {Object} Returns `object`. - */ - function baseSet(object, path, value, customizer) { - path = isKey(path, object) ? [path] : castPath(path); - - var index = -1, - length = path.length, - lastIndex = length - 1, - nested = object; - - while (nested != null && ++index < length) { - var key = toKey(path[index]); - if (isObject(nested)) { - var newValue = value; - if (index != lastIndex) { - var objValue = nested[key]; - newValue = customizer ? customizer(objValue, key, nested) : undefined; - if (newValue === undefined) { - newValue = objValue == null - ? (isIndex(path[index + 1]) ? [] : {}) - : objValue; - } - } - assignValue(nested, key, newValue); - } - nested = nested[key]; - } - return object; - } - - /** - * The base implementation of `setData` without support for hot loop detection. - * - * @private - * @param {Function} func The function to associate metadata with. - * @param {*} data The metadata. - * @returns {Function} Returns `func`. - */ - var baseSetData = !metaMap ? identity : function(func, data) { - metaMap.set(func, data); - return func; - }; - - /** - * The base implementation of `_.slice` without an iteratee call guard. - * - * @private - * @param {Array} array The array to slice. - * @param {number} [start=0] The start position. - * @param {number} [end=array.length] The end position. - * @returns {Array} Returns the slice of `array`. - */ - function baseSlice(array, start, end) { - var index = -1, - length = array.length; - - if (start < 0) { - start = -start > length ? 0 : (length + start); - } - end = end > length ? length : end; - if (end < 0) { - end += length; - } - length = start > end ? 0 : ((end - start) >>> 0); - start >>>= 0; - - var result = Array(length); - while (++index < length) { - result[index] = array[index + start]; - } - return result; - } - - /** - * The base implementation of `_.some` without support for iteratee shorthands. - * - * @private - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} predicate The function invoked per iteration. - * @returns {boolean} Returns `true` if any element passes the predicate check, - * else `false`. - */ - function baseSome(collection, predicate) { - var result; - - baseEach(collection, function(value, index, collection) { - result = predicate(value, index, collection); - return !result; - }); - return !!result; - } - - /** - * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which - * performs a binary search of `array` to determine the index at which `value` - * should be inserted into `array` in order to maintain its sort order. - * - * @private - * @param {Array} array The sorted array to inspect. - * @param {*} value The value to evaluate. - * @param {boolean} [retHighest] Specify returning the highest qualified index. - * @returns {number} Returns the index at which `value` should be inserted - * into `array`. - */ - function baseSortedIndex(array, value, retHighest) { - var low = 0, - high = array ? array.length : low; - - if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) { - while (low < high) { - var mid = (low + high) >>> 1, - computed = array[mid]; - - if (computed !== null && !isSymbol(computed) && - (retHighest ? (computed <= value) : (computed < value))) { - low = mid + 1; - } else { - high = mid; - } - } - return high; - } - return baseSortedIndexBy(array, value, identity, retHighest); - } - - /** - * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy` - * which invokes `iteratee` for `value` and each element of `array` to compute - * their sort ranking. The iteratee is invoked with one argument; (value). - * - * @private - * @param {Array} array The sorted array to inspect. - * @param {*} value The value to evaluate. - * @param {Function} iteratee The iteratee invoked per element. - * @param {boolean} [retHighest] Specify returning the highest qualified index. - * @returns {number} Returns the index at which `value` should be inserted - * into `array`. - */ - function baseSortedIndexBy(array, value, iteratee, retHighest) { - value = iteratee(value); - - var low = 0, - high = array ? array.length : 0, - valIsNaN = value !== value, - valIsNull = value === null, - valIsSymbol = isSymbol(value), - valIsUndefined = value === undefined; - - while (low < high) { - var mid = nativeFloor((low + high) / 2), - computed = iteratee(array[mid]), - othIsDefined = computed !== undefined, - othIsNull = computed === null, - othIsReflexive = computed === computed, - othIsSymbol = isSymbol(computed); - - if (valIsNaN) { - var setLow = retHighest || othIsReflexive; - } else if (valIsUndefined) { - setLow = othIsReflexive && (retHighest || othIsDefined); - } else if (valIsNull) { - setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull); - } else if (valIsSymbol) { - setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol); - } else if (othIsNull || othIsSymbol) { - setLow = false; - } else { - setLow = retHighest ? (computed <= value) : (computed < value); - } - if (setLow) { - low = mid + 1; - } else { - high = mid; - } - } - return nativeMin(high, MAX_ARRAY_INDEX); - } - - /** - * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without - * support for iteratee shorthands. - * - * @private - * @param {Array} array The array to inspect. - * @param {Function} [iteratee] The iteratee invoked per element. - * @returns {Array} Returns the new duplicate free array. - */ - function baseSortedUniq(array, iteratee) { - var index = -1, - length = array.length, - resIndex = 0, - result = []; - - while (++index < length) { - var value = array[index], - computed = iteratee ? iteratee(value) : value; - - if (!index || !eq(computed, seen)) { - var seen = computed; - result[resIndex++] = value === 0 ? 0 : value; - } - } - return result; - } - - /** - * The base implementation of `_.toNumber` which doesn't ensure correct - * conversions of binary, hexadecimal, or octal string values. - * - * @private - * @param {*} value The value to process. - * @returns {number} Returns the number. - */ - function baseToNumber(value) { - if (typeof value == 'number') { - return value; - } - if (isSymbol(value)) { - return NAN; - } - return +value; - } - - /** - * 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) ? '-0' : result; - } - - /** - * The base implementation of `_.uniqBy` without support for iteratee shorthands. - * - * @private - * @param {Array} array The array to inspect. - * @param {Function} [iteratee] The iteratee invoked per element. - * @param {Function} [comparator] The comparator invoked per element. - * @returns {Array} Returns the new duplicate free array. - */ - function baseUniq(array, iteratee, comparator) { - var index = -1, - includes = arrayIncludes, - length = array.length, - isCommon = true, - result = [], - seen = result; - - if (comparator) { - isCommon = false; - includes = arrayIncludesWith; - } - else if (length >= LARGE_ARRAY_SIZE) { - var set = iteratee ? null : createSet(array); - if (set) { - return setToArray(set); - } - isCommon = false; - includes = cacheHas; - seen = new SetCache; - } - else { - seen = iteratee ? [] : result; - } - outer: - while (++index < length) { - var value = array[index], - computed = iteratee ? iteratee(value) : value; - - value = (comparator || value !== 0) ? value : 0; - if (isCommon && computed === computed) { - var seenIndex = seen.length; - while (seenIndex--) { - if (seen[seenIndex] === computed) { - continue outer; - } - } - if (iteratee) { - seen.push(computed); - } - result.push(value); - } - else if (!includes(seen, computed, comparator)) { - if (seen !== result) { - seen.push(computed); - } - result.push(value); - } - } - return result; - } - - /** - * The base implementation of `_.unset`. - * - * @private - * @param {Object} object The object to modify. - * @param {Array|string} path The path of the property to unset. - * @returns {boolean} Returns `true` if the property is deleted, else `false`. - */ - function baseUnset(object, path) { - path = isKey(path, object) ? [path] : castPath(path); - object = parent(object, path); - - var key = toKey(last(path)); - return !(object != null && baseHas(object, key)) || delete object[key]; - } - - /** - * The base implementation of `_.update`. - * - * @private - * @param {Object} object The object to query. - * @param {Array|string} path The path of the property to update. - * @param {Function} updater The function to produce the updated value. - * @param {Function} [customizer] The function to customize path creation. - * @returns {Object} Returns `object`. - */ - function baseUpdate(object, path, updater, customizer) { - return baseSet(object, path, updater(baseGet(object, path)), customizer); - } - - /** - * The base implementation of methods like `_.dropWhile` and `_.takeWhile` - * without support for iteratee shorthands. - * - * @private - * @param {Array} array The array to query. - * @param {Function} predicate The function invoked per iteration. - * @param {boolean} [isDrop] Specify dropping elements instead of taking them. - * @param {boolean} [fromRight] Specify iterating from right to left. - * @returns {Array} Returns the slice of `array`. - */ - function baseWhile(array, predicate, isDrop, fromRight) { - var length = array.length, - index = fromRight ? length : -1; - - while ((fromRight ? index-- : ++index < length) && - predicate(array[index], index, array)) {} - - return isDrop - ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length)) - : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index)); - } - - /** - * The base implementation of `wrapperValue` which returns the result of - * performing a sequence of actions on the unwrapped `value`, where each - * successive action is supplied the return value of the previous. - * - * @private - * @param {*} value The unwrapped value. - * @param {Array} actions Actions to perform to resolve the unwrapped value. - * @returns {*} Returns the resolved value. - */ - function baseWrapperValue(value, actions) { - var result = value; - if (result instanceof LazyWrapper) { - result = result.value(); - } - return arrayReduce(actions, function(result, action) { - return action.func.apply(action.thisArg, arrayPush([result], action.args)); - }, result); - } - - /** - * The base implementation of methods like `_.xor`, without support for - * iteratee shorthands, that accepts an array of arrays to inspect. - * - * @private - * @param {Array} arrays The arrays to inspect. - * @param {Function} [iteratee] The iteratee invoked per element. - * @param {Function} [comparator] The comparator invoked per element. - * @returns {Array} Returns the new array of values. - */ - function baseXor(arrays, iteratee, comparator) { - var index = -1, - length = arrays.length; - - while (++index < length) { - var result = result - ? arrayPush( - baseDifference(result, arrays[index], iteratee, comparator), - baseDifference(arrays[index], result, iteratee, comparator) - ) - : arrays[index]; - } - return (result && result.length) ? baseUniq(result, iteratee, comparator) : []; - } - - /** - * This base implementation of `_.zipObject` which assigns values using `assignFunc`. - * - * @private - * @param {Array} props The property identifiers. - * @param {Array} values The property values. - * @param {Function} assignFunc The function to assign values. - * @returns {Object} Returns the new object. - */ - function baseZipObject(props, values, assignFunc) { - var index = -1, - length = props.length, - valsLength = values.length, - result = {}; - - while (++index < length) { - var value = index < valsLength ? values[index] : undefined; - assignFunc(result, props[index], value); - } - return result; - } - - /** - * Casts `value` to an empty array if it's not an array like object. - * - * @private - * @param {*} value The value to inspect. - * @returns {Array|Object} Returns the cast array-like object. - */ - function castArrayLikeObject(value) { - return isArrayLikeObject(value) ? value : []; - } - - /** - * Casts `value` to `identity` if it's not a function. - * - * @private - * @param {*} value The value to inspect. - * @returns {Function} Returns cast function. - */ - function castFunction(value) { - return typeof value == 'function' ? value : identity; - } - - /** - * Casts `value` to a path array if it's not one. - * - * @private - * @param {*} value The value to inspect. - * @returns {Array} Returns the cast property path array. - */ - function castPath(value) { - return isArray(value) ? value : stringToPath(value); - } - - /** - * 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); - } - - /** - * Creates a clone of `buffer`. - * - * @private - * @param {Buffer} buffer The buffer to clone. - * @param {boolean} [isDeep] Specify a deep clone. - * @returns {Buffer} Returns the cloned buffer. - */ - function cloneBuffer(buffer, isDeep) { - if (isDeep) { - return buffer.slice(); - } - var result = new buffer.constructor(buffer.length); - buffer.copy(result); - return result; - } - - /** - * Creates a clone of `arrayBuffer`. - * - * @private - * @param {ArrayBuffer} arrayBuffer The array buffer to clone. - * @returns {ArrayBuffer} Returns the cloned array buffer. - */ - function cloneArrayBuffer(arrayBuffer) { - var result = new arrayBuffer.constructor(arrayBuffer.byteLength); - new Uint8Array(result).set(new Uint8Array(arrayBuffer)); - return result; - } - - /** - * Creates a clone of `dataView`. - * - * @private - * @param {Object} dataView The data view to clone. - * @param {boolean} [isDeep] Specify a deep clone. - * @returns {Object} Returns the cloned data view. - */ - function cloneDataView(dataView, isDeep) { - var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer; - return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength); - } - - /** - * Creates a clone of `map`. - * - * @private - * @param {Object} map The map to clone. - * @param {Function} cloneFunc The function to clone values. - * @param {boolean} [isDeep] Specify a deep clone. - * @returns {Object} Returns the cloned map. - */ - function cloneMap(map, isDeep, cloneFunc) { - var array = isDeep ? cloneFunc(mapToArray(map), true) : mapToArray(map); - return arrayReduce(array, addMapEntry, new map.constructor); - } - - /** - * Creates a clone of `regexp`. - * - * @private - * @param {Object} regexp The regexp to clone. - * @returns {Object} Returns the cloned regexp. - */ - function cloneRegExp(regexp) { - var result = new regexp.constructor(regexp.source, reFlags.exec(regexp)); - result.lastIndex = regexp.lastIndex; - return result; - } - - /** - * Creates a clone of `set`. - * - * @private - * @param {Object} set The set to clone. - * @param {Function} cloneFunc The function to clone values. - * @param {boolean} [isDeep] Specify a deep clone. - * @returns {Object} Returns the cloned set. - */ - function cloneSet(set, isDeep, cloneFunc) { - var array = isDeep ? cloneFunc(setToArray(set), true) : setToArray(set); - return arrayReduce(array, addSetEntry, new set.constructor); - } - - /** - * Creates a clone of the `symbol` object. - * - * @private - * @param {Object} symbol The symbol object to clone. - * @returns {Object} Returns the cloned symbol object. - */ - function cloneSymbol(symbol) { - return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {}; - } - - /** - * Creates a clone of `typedArray`. - * - * @private - * @param {Object} typedArray The typed array to clone. - * @param {boolean} [isDeep] Specify a deep clone. - * @returns {Object} Returns the cloned typed array. - */ - function cloneTypedArray(typedArray, isDeep) { - var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer; - return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length); - } - - /** - * Compares values to sort them in ascending order. - * - * @private - * @param {*} value The value to compare. - * @param {*} other The other value to compare. - * @returns {number} Returns the sort order indicator for `value`. - */ - function compareAscending(value, other) { - if (value !== other) { - var valIsDefined = value !== undefined, - valIsNull = value === null, - valIsReflexive = value === value, - valIsSymbol = isSymbol(value); - - var othIsDefined = other !== undefined, - othIsNull = other === null, - othIsReflexive = other === other, - othIsSymbol = isSymbol(other); - - if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) || - (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) || - (valIsNull && othIsDefined && othIsReflexive) || - (!valIsDefined && othIsReflexive) || - !valIsReflexive) { - return 1; - } - if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) || - (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) || - (othIsNull && valIsDefined && valIsReflexive) || - (!othIsDefined && valIsReflexive) || - !othIsReflexive) { - return -1; - } - } - return 0; - } - - /** - * Used by `_.orderBy` to compare multiple properties of a value to another - * and stable sort them. - * - * If `orders` is unspecified, all values are sorted in ascending order. Otherwise, - * specify an order of "desc" for descending or "asc" for ascending sort order - * of corresponding values. - * - * @private - * @param {Object} object The object to compare. - * @param {Object} other The other object to compare. - * @param {boolean[]|string[]} orders The order to sort by for each property. - * @returns {number} Returns the sort order indicator for `object`. - */ - function compareMultiple(object, other, orders) { - var index = -1, - objCriteria = object.criteria, - othCriteria = other.criteria, - length = objCriteria.length, - ordersLength = orders.length; - - while (++index < length) { - var result = compareAscending(objCriteria[index], othCriteria[index]); - if (result) { - if (index >= ordersLength) { - return result; - } - var order = orders[index]; - return result * (order == 'desc' ? -1 : 1); - } - } - // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications - // that causes it, under certain circumstances, to provide the same value for - // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247 - // for more details. - // - // This also ensures a stable sort in V8 and other engines. - // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details. - return object.index - other.index; - } - - /** - * Creates an array that is the composition of partially applied arguments, - * placeholders, and provided arguments into a single array of arguments. - * - * @private - * @param {Array} args The provided arguments. - * @param {Array} partials The arguments to prepend to those provided. - * @param {Array} holders The `partials` placeholder indexes. - * @params {boolean} [isCurried] Specify composing for a curried function. - * @returns {Array} Returns the new array of composed arguments. - */ - function composeArgs(args, partials, holders, isCurried) { - var argsIndex = -1, - argsLength = args.length, - holdersLength = holders.length, - leftIndex = -1, - leftLength = partials.length, - rangeLength = nativeMax(argsLength - holdersLength, 0), - result = Array(leftLength + rangeLength), - isUncurried = !isCurried; - - while (++leftIndex < leftLength) { - result[leftIndex] = partials[leftIndex]; - } - while (++argsIndex < holdersLength) { - if (isUncurried || argsIndex < argsLength) { - result[holders[argsIndex]] = args[argsIndex]; - } - } - while (rangeLength--) { - result[leftIndex++] = args[argsIndex++]; - } - return result; - } - - /** - * This function is like `composeArgs` except that the arguments composition - * is tailored for `_.partialRight`. - * - * @private - * @param {Array} args The provided arguments. - * @param {Array} partials The arguments to append to those provided. - * @param {Array} holders The `partials` placeholder indexes. - * @params {boolean} [isCurried] Specify composing for a curried function. - * @returns {Array} Returns the new array of composed arguments. - */ - function composeArgsRight(args, partials, holders, isCurried) { - var argsIndex = -1, - argsLength = args.length, - holdersIndex = -1, - holdersLength = holders.length, - rightIndex = -1, - rightLength = partials.length, - rangeLength = nativeMax(argsLength - holdersLength, 0), - result = Array(rangeLength + rightLength), - isUncurried = !isCurried; - - while (++argsIndex < rangeLength) { - result[argsIndex] = args[argsIndex]; - } - var offset = argsIndex; - while (++rightIndex < rightLength) { - result[offset + rightIndex] = partials[rightIndex]; - } - while (++holdersIndex < holdersLength) { - if (isUncurried || argsIndex < argsLength) { - result[offset + holders[holdersIndex]] = args[argsIndex++]; - } - } - 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; - } - - /** - * Copies properties of `source` to `object`. - * - * @private - * @param {Object} source The object to copy properties from. - * @param {Array} props The property identifiers to copy. - * @param {Object} [object={}] The object to copy properties to. - * @param {Function} [customizer] The function to customize copied values. - * @returns {Object} Returns `object`. - */ - function copyObject(source, props, object, customizer) { - object || (object = {}); - - var index = -1, - length = props.length; - - while (++index < length) { - var key = props[index]; - - var newValue = customizer - ? customizer(object[key], source[key], key, object, source) - : undefined; - - assignValue(object, key, newValue === undefined ? source[key] : newValue); - } - return object; - } - - /** - * Copies own symbol properties of `source` to `object`. - * - * @private - * @param {Object} source The object to copy symbols from. - * @param {Object} [object={}] The object to copy symbols to. - * @returns {Object} Returns `object`. - */ - function copySymbols(source, object) { - return copyObject(source, getSymbols(source), object); - } - - /** - * Creates a function like `_.groupBy`. - * - * @private - * @param {Function} setter The function to set accumulator values. - * @param {Function} [initializer] The accumulator object initializer. - * @returns {Function} Returns the new aggregator function. - */ - function createAggregator(setter, initializer) { - return function(collection, iteratee) { - var func = isArray(collection) ? arrayAggregator : baseAggregator, - accumulator = initializer ? initializer() : {}; - - return func(collection, setter, getIteratee(iteratee, 2), accumulator); - }; - } - - /** - * Creates a function like `_.assign`. - * - * @private - * @param {Function} assigner The function to assign values. - * @returns {Function} Returns the new assigner function. - */ - function createAssigner(assigner) { - return baseRest(function(object, sources) { - var index = -1, - length = sources.length, - customizer = length > 1 ? sources[length - 1] : undefined, - guard = length > 2 ? sources[2] : undefined; - - customizer = (assigner.length > 3 && typeof customizer == 'function') - ? (length--, customizer) - : undefined; - - if (guard && isIterateeCall(sources[0], sources[1], guard)) { - customizer = length < 3 ? undefined : customizer; - length = 1; - } - object = Object(object); - while (++index < length) { - var source = sources[index]; - if (source) { - assigner(object, source, index, customizer); - } - } - return object; - }); - } - - /** - * Creates a `baseEach` or `baseEachRight` function. - * - * @private - * @param {Function} eachFunc The function to iterate over a collection. - * @param {boolean} [fromRight] Specify iterating from right to left. - * @returns {Function} Returns the new base function. - */ - function createBaseEach(eachFunc, fromRight) { - return function(collection, iteratee) { - if (collection == null) { - return collection; - } - if (!isArrayLike(collection)) { - return eachFunc(collection, iteratee); - } - var length = collection.length, - index = fromRight ? length : -1, - iterable = Object(collection); - - while ((fromRight ? index-- : ++index < length)) { - if (iteratee(iterable[index], index, iterable) === false) { - break; - } - } - return collection; - }; - } - - /** - * 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; - }; - } - - /** - * Creates a function that wraps `func` to invoke it with the optional `this` - * binding of `thisArg`. - * - * @private - * @param {Function} func The function to wrap. - * @param {number} bitmask The bitmask flags. See `createWrap` for more details. - * @param {*} [thisArg] The `this` binding of `func`. - * @returns {Function} Returns the new wrapped function. - */ - function createBind(func, bitmask, thisArg) { - var isBind = bitmask & BIND_FLAG, - Ctor = createCtor(func); - - function wrapper() { - var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; - return fn.apply(isBind ? thisArg : this, arguments); - } - return wrapper; - } - - /** - * Creates a function like `_.lowerFirst`. - * - * @private - * @param {string} methodName The name of the `String` case method to use. - * @returns {Function} Returns the new case function. - */ - function createCaseFirst(methodName) { - return function(string) { - string = toString(string); - - var strSymbols = reHasComplexSymbol.test(string) - ? stringToArray(string) - : undefined; - - var chr = strSymbols - ? strSymbols[0] - : string.charAt(0); - - var trailing = strSymbols - ? castSlice(strSymbols, 1).join('') - : string.slice(1); - - return chr[methodName]() + trailing; - }; - } - - /** - * Creates a function like `_.camelCase`. - * - * @private - * @param {Function} callback The function to combine each word. - * @returns {Function} Returns the new compounder function. - */ - function createCompounder(callback) { - return function(string) { - return arrayReduce(words(deburr(string).replace(reApos, '')), callback, ''); - }; - } - - /** - * Creates a function that produces an instance of `Ctor` regardless of - * whether it was invoked as part of a `new` expression or by `call` or `apply`. - * - * @private - * @param {Function} Ctor The constructor to wrap. - * @returns {Function} Returns the new wrapped function. - */ - function createCtor(Ctor) { - return function() { - // Use a `switch` statement to work with class constructors. See - // http://ecma-international.org/ecma-262/6.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist - // for more details. - var args = arguments; - switch (args.length) { - case 0: return new Ctor; - case 1: return new Ctor(args[0]); - case 2: return new Ctor(args[0], args[1]); - case 3: return new Ctor(args[0], args[1], args[2]); - case 4: return new Ctor(args[0], args[1], args[2], args[3]); - case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]); - case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]); - case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]); - } - var thisBinding = baseCreate(Ctor.prototype), - result = Ctor.apply(thisBinding, args); - - // Mimic the constructor's `return` behavior. - // See https://es5.github.io/#x13.2.2 for more details. - return isObject(result) ? result : thisBinding; - }; - } - - /** - * Creates a function that wraps `func` to enable currying. - * - * @private - * @param {Function} func The function to wrap. - * @param {number} bitmask The bitmask flags. See `createWrap` for more details. - * @param {number} arity The arity of `func`. - * @returns {Function} Returns the new wrapped function. - */ - function createCurry(func, bitmask, arity) { - var Ctor = createCtor(func); - - function wrapper() { - var length = arguments.length, - args = Array(length), - index = length, - placeholder = getHolder(wrapper); - - while (index--) { - args[index] = arguments[index]; - } - var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder) - ? [] - : replaceHolders(args, placeholder); - - length -= holders.length; - if (length < arity) { - return createRecurry( - func, bitmask, createHybrid, wrapper.placeholder, undefined, - args, holders, undefined, undefined, arity - length); - } - var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; - return apply(fn, this, args); - } - return wrapper; - } - - /** - * Creates a `_.find` or `_.findLast` function. - * - * @private - * @param {Function} findIndexFunc The function to find the collection index. - * @returns {Function} Returns the new find function. - */ - function createFind(findIndexFunc) { - return function(collection, predicate, fromIndex) { - var iterable = Object(collection); - if (!isArrayLike(collection)) { - var iteratee = getIteratee(predicate, 3); - collection = keys(collection); - predicate = function(key) { return iteratee(iterable[key], key, iterable); }; - } - var index = findIndexFunc(collection, predicate, fromIndex); - return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined; - }; - } - - /** - * Creates a `_.flow` or `_.flowRight` function. - * - * @private - * @param {boolean} [fromRight] Specify iterating from right to left. - * @returns {Function} Returns the new flow function. - */ - function createFlow(fromRight) { - return baseRest(function(funcs) { - funcs = baseFlatten(funcs, 1); - - var length = funcs.length, - index = length, - prereq = LodashWrapper.prototype.thru; - - if (fromRight) { - funcs.reverse(); - } - while (index--) { - var func = funcs[index]; - if (typeof func != 'function') { - throw new TypeError(FUNC_ERROR_TEXT); - } - if (prereq && !wrapper && getFuncName(func) == 'wrapper') { - var wrapper = new LodashWrapper([], true); - } - } - index = wrapper ? index : length; - while (++index < length) { - func = funcs[index]; - - var funcName = getFuncName(func), - data = funcName == 'wrapper' ? getData(func) : undefined; - - if (data && isLaziable(data[0]) && - data[1] == (ARY_FLAG | CURRY_FLAG | PARTIAL_FLAG | REARG_FLAG) && - !data[4].length && data[9] == 1 - ) { - wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]); - } else { - wrapper = (func.length == 1 && isLaziable(func)) - ? wrapper[funcName]() - : wrapper.thru(func); - } - } - return function() { - var args = arguments, - value = args[0]; - - if (wrapper && args.length == 1 && - isArray(value) && value.length >= LARGE_ARRAY_SIZE) { - return wrapper.plant(value).value(); - } - var index = 0, - result = length ? funcs[index].apply(this, args) : value; - - while (++index < length) { - result = funcs[index].call(this, result); - } - return result; - }; - }); - } - - /** - * Creates a function that wraps `func` to invoke it with optional `this` - * binding of `thisArg`, partial application, and currying. - * - * @private - * @param {Function|string} func The function or method name to wrap. - * @param {number} bitmask The bitmask flags. See `createWrap` for more details. - * @param {*} [thisArg] The `this` binding of `func`. - * @param {Array} [partials] The arguments to prepend to those provided to - * the new function. - * @param {Array} [holders] The `partials` placeholder indexes. - * @param {Array} [partialsRight] The arguments to append to those provided - * to the new function. - * @param {Array} [holdersRight] The `partialsRight` placeholder indexes. - * @param {Array} [argPos] The argument positions of the new function. - * @param {number} [ary] The arity cap of `func`. - * @param {number} [arity] The arity of `func`. - * @returns {Function} Returns the new wrapped function. - */ - function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) { - var isAry = bitmask & ARY_FLAG, - isBind = bitmask & BIND_FLAG, - isBindKey = bitmask & BIND_KEY_FLAG, - isCurried = bitmask & (CURRY_FLAG | CURRY_RIGHT_FLAG), - isFlip = bitmask & FLIP_FLAG, - Ctor = isBindKey ? undefined : createCtor(func); - - function wrapper() { - var length = arguments.length, - args = Array(length), - index = length; - - while (index--) { - args[index] = arguments[index]; - } - if (isCurried) { - var placeholder = getHolder(wrapper), - holdersCount = countHolders(args, placeholder); - } - if (partials) { - args = composeArgs(args, partials, holders, isCurried); - } - if (partialsRight) { - args = composeArgsRight(args, partialsRight, holdersRight, isCurried); - } - length -= holdersCount; - if (isCurried && length < arity) { - var newHolders = replaceHolders(args, placeholder); - return createRecurry( - func, bitmask, createHybrid, wrapper.placeholder, thisArg, - args, newHolders, argPos, ary, arity - length - ); - } - var thisBinding = isBind ? thisArg : this, - fn = isBindKey ? thisBinding[func] : func; - - length = args.length; - if (argPos) { - args = reorder(args, argPos); - } else if (isFlip && length > 1) { - args.reverse(); - } - if (isAry && ary < length) { - args.length = ary; - } - if (this && this !== root && this instanceof wrapper) { - fn = Ctor || createCtor(fn); - } - return fn.apply(thisBinding, args); - } - return wrapper; - } - - /** - * Creates a function like `_.invertBy`. - * - * @private - * @param {Function} setter The function to set accumulator values. - * @param {Function} toIteratee The function to resolve iteratees. - * @returns {Function} Returns the new inverter function. - */ - function createInverter(setter, toIteratee) { - return function(object, iteratee) { - return baseInverter(object, setter, toIteratee(iteratee), {}); - }; - } - - /** - * Creates a function that performs a mathematical operation on two values. - * - * @private - * @param {Function} operator The function to perform the operation. - * @param {number} [defaultValue] The value used for `undefined` arguments. - * @returns {Function} Returns the new mathematical operation function. - */ - function createMathOperation(operator, defaultValue) { - return function(value, other) { - var result; - if (value === undefined && other === undefined) { - return defaultValue; - } - if (value !== undefined) { - result = value; - } - if (other !== undefined) { - if (result === undefined) { - return other; - } - if (typeof value == 'string' || typeof other == 'string') { - value = baseToString(value); - other = baseToString(other); - } else { - value = baseToNumber(value); - other = baseToNumber(other); - } - result = operator(value, other); - } - return result; - }; - } - - /** - * Creates a function like `_.over`. - * - * @private - * @param {Function} arrayFunc The function to iterate over iteratees. - * @returns {Function} Returns the new over function. - */ - function createOver(arrayFunc) { - return baseRest(function(iteratees) { - iteratees = (iteratees.length == 1 && isArray(iteratees[0])) - ? arrayMap(iteratees[0], baseUnary(getIteratee())) - : arrayMap(baseFlatten(iteratees, 1), baseUnary(getIteratee())); - - return baseRest(function(args) { - var thisArg = this; - return arrayFunc(iteratees, function(iteratee) { - return apply(iteratee, thisArg, args); - }); - }); - }); - } - - /** - * Creates the padding for `string` based on `length`. The `chars` string - * is truncated if the number of characters exceeds `length`. - * - * @private - * @param {number} length The padding length. - * @param {string} [chars=' '] The string used as padding. - * @returns {string} Returns the padding for `string`. - */ - function createPadding(length, chars) { - chars = chars === undefined ? ' ' : baseToString(chars); - - var charsLength = chars.length; - if (charsLength < 2) { - return charsLength ? baseRepeat(chars, length) : chars; - } - var result = baseRepeat(chars, nativeCeil(length / stringSize(chars))); - return reHasComplexSymbol.test(chars) - ? castSlice(stringToArray(result), 0, length).join('') - : result.slice(0, length); - } - - /** - * Creates a function that wraps `func` to invoke it with the `this` binding - * of `thisArg` and `partials` prepended to the arguments it receives. - * - * @private - * @param {Function} func The function to wrap. - * @param {number} bitmask The bitmask flags. See `createWrap` for more details. - * @param {*} thisArg The `this` binding of `func`. - * @param {Array} partials The arguments to prepend to those provided to - * the new function. - * @returns {Function} Returns the new wrapped function. - */ - function createPartial(func, bitmask, thisArg, partials) { - var isBind = bitmask & BIND_FLAG, - Ctor = createCtor(func); - - function wrapper() { - var argsIndex = -1, - argsLength = arguments.length, - leftIndex = -1, - leftLength = partials.length, - args = Array(leftLength + argsLength), - fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; - - while (++leftIndex < leftLength) { - args[leftIndex] = partials[leftIndex]; - } - while (argsLength--) { - args[leftIndex++] = arguments[++argsIndex]; - } - return apply(fn, isBind ? thisArg : this, args); - } - return wrapper; - } - - /** - * Creates a `_.range` or `_.rangeRight` function. - * - * @private - * @param {boolean} [fromRight] Specify iterating from right to left. - * @returns {Function} Returns the new range function. - */ - function createRange(fromRight) { - return function(start, end, step) { - if (step && typeof step != 'number' && isIterateeCall(start, end, step)) { - end = step = undefined; - } - // Ensure the sign of `-0` is preserved. - start = toFinite(start); - if (end === undefined) { - end = start; - start = 0; - } else { - end = toFinite(end); - } - step = step === undefined ? (start < end ? 1 : -1) : toFinite(step); - return baseRange(start, end, step, fromRight); - }; - } - - /** - * Creates a function that performs a relational operation on two values. - * - * @private - * @param {Function} operator The function to perform the operation. - * @returns {Function} Returns the new relational operation function. - */ - function createRelationalOperation(operator) { - return function(value, other) { - if (!(typeof value == 'string' && typeof other == 'string')) { - value = toNumber(value); - other = toNumber(other); - } - return operator(value, other); - }; - } - - /** - * Creates a function that wraps `func` to continue currying. - * - * @private - * @param {Function} func The function to wrap. - * @param {number} bitmask The bitmask flags. See `createWrap` for more details. - * @param {Function} wrapFunc The function to create the `func` wrapper. - * @param {*} placeholder The placeholder value. - * @param {*} [thisArg] The `this` binding of `func`. - * @param {Array} [partials] The arguments to prepend to those provided to - * the new function. - * @param {Array} [holders] The `partials` placeholder indexes. - * @param {Array} [argPos] The argument positions of the new function. - * @param {number} [ary] The arity cap of `func`. - * @param {number} [arity] The arity of `func`. - * @returns {Function} Returns the new wrapped function. - */ - function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) { - var isCurry = bitmask & CURRY_FLAG, - newHolders = isCurry ? holders : undefined, - newHoldersRight = isCurry ? undefined : holders, - newPartials = isCurry ? partials : undefined, - newPartialsRight = isCurry ? undefined : partials; - - bitmask |= (isCurry ? PARTIAL_FLAG : PARTIAL_RIGHT_FLAG); - bitmask &= ~(isCurry ? PARTIAL_RIGHT_FLAG : PARTIAL_FLAG); - - if (!(bitmask & CURRY_BOUND_FLAG)) { - bitmask &= ~(BIND_FLAG | BIND_KEY_FLAG); - } - var newData = [ - func, bitmask, thisArg, newPartials, newHolders, newPartialsRight, - newHoldersRight, argPos, ary, arity - ]; - - var result = wrapFunc.apply(undefined, newData); - if (isLaziable(func)) { - setData(result, newData); - } - result.placeholder = placeholder; - return setWrapToString(result, func, bitmask); - } - - /** - * Creates a function like `_.round`. - * - * @private - * @param {string} methodName The name of the `Math` method to use when rounding. - * @returns {Function} Returns the new round function. - */ - function createRound(methodName) { - var func = Math[methodName]; - return function(number, precision) { - number = toNumber(number); - precision = nativeMin(toInteger(precision), 292); - if (precision) { - // Shift with exponential notation to avoid floating-point issues. - // See [MDN](https://mdn.io/round#Examples) for more details. - var pair = (toString(number) + 'e').split('e'), - value = func(pair[0] + 'e' + (+pair[1] + precision)); - - pair = (toString(value) + 'e').split('e'); - return +(pair[0] + 'e' + (+pair[1] - precision)); - } - return func(number); - }; - } - - /** - * Creates a set object of `values`. - * - * @private - * @param {Array} values The values to add to the set. - * @returns {Object} Returns the new set. - */ - var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) { - return new Set(values); - }; - - /** - * Creates a `_.toPairs` or `_.toPairsIn` function. - * - * @private - * @param {Function} keysFunc The function to get the keys of a given object. - * @returns {Function} Returns the new pairs function. - */ - function createToPairs(keysFunc) { - return function(object) { - var tag = getTag(object); - if (tag == mapTag) { - return mapToArray(object); - } - if (tag == setTag) { - return setToPairs(object); - } - return baseToPairs(object, keysFunc(object)); - }; - } - - /** - * Creates a function that either curries or invokes `func` with optional - * `this` binding and partially applied arguments. - * - * @private - * @param {Function|string} func The function or method name to wrap. - * @param {number} bitmask The bitmask flags. - * The bitmask may be composed of the following flags: - * 1 - `_.bind` - * 2 - `_.bindKey` - * 4 - `_.curry` or `_.curryRight` of a bound function - * 8 - `_.curry` - * 16 - `_.curryRight` - * 32 - `_.partial` - * 64 - `_.partialRight` - * 128 - `_.rearg` - * 256 - `_.ary` - * 512 - `_.flip` - * @param {*} [thisArg] The `this` binding of `func`. - * @param {Array} [partials] The arguments to be partially applied. - * @param {Array} [holders] The `partials` placeholder indexes. - * @param {Array} [argPos] The argument positions of the new function. - * @param {number} [ary] The arity cap of `func`. - * @param {number} [arity] The arity of `func`. - * @returns {Function} Returns the new wrapped function. - */ - function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) { - var isBindKey = bitmask & BIND_KEY_FLAG; - if (!isBindKey && typeof func != 'function') { - throw new TypeError(FUNC_ERROR_TEXT); - } - var length = partials ? partials.length : 0; - if (!length) { - bitmask &= ~(PARTIAL_FLAG | PARTIAL_RIGHT_FLAG); - partials = holders = undefined; - } - ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0); - arity = arity === undefined ? arity : toInteger(arity); - length -= holders ? holders.length : 0; - - if (bitmask & PARTIAL_RIGHT_FLAG) { - var partialsRight = partials, - holdersRight = holders; - - partials = holders = undefined; - } - var data = isBindKey ? undefined : getData(func); - - var newData = [ - func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, - argPos, ary, arity - ]; - - if (data) { - mergeData(newData, data); - } - func = newData[0]; - bitmask = newData[1]; - thisArg = newData[2]; - partials = newData[3]; - holders = newData[4]; - arity = newData[9] = newData[9] == null - ? (isBindKey ? 0 : func.length) - : nativeMax(newData[9] - length, 0); - - if (!arity && bitmask & (CURRY_FLAG | CURRY_RIGHT_FLAG)) { - bitmask &= ~(CURRY_FLAG | CURRY_RIGHT_FLAG); - } - if (!bitmask || bitmask == BIND_FLAG) { - var result = createBind(func, bitmask, thisArg); - } else if (bitmask == CURRY_FLAG || bitmask == CURRY_RIGHT_FLAG) { - result = createCurry(func, bitmask, arity); - } else if ((bitmask == PARTIAL_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG)) && !holders.length) { - result = createPartial(func, bitmask, thisArg, partials); - } else { - result = createHybrid.apply(undefined, newData); - } - var setter = data ? baseSetData : setData; - return setWrapToString(setter(result, newData), func, bitmask); - } - - /** - * A specialized version of `baseIsEqualDeep` for arrays with support for - * partial deep comparisons. - * - * @private - * @param {Array} array The array to compare. - * @param {Array} other The other array to compare. - * @param {Function} equalFunc The function to determine equivalents of values. - * @param {Function} customizer The function to customize comparisons. - * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual` - * for more details. - * @param {Object} stack Tracks traversed `array` and `other` objects. - * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`. - */ - function equalArrays(array, other, equalFunc, customizer, bitmask, stack) { - var isPartial = bitmask & PARTIAL_COMPARE_FLAG, - arrLength = array.length, - othLength = other.length; - - if (arrLength != othLength && !(isPartial && othLength > arrLength)) { - return false; - } - // Assume cyclic values are equal. - var stacked = stack.get(array); - if (stacked && stack.get(other)) { - return stacked == other; - } - var index = -1, - result = true, - seen = (bitmask & UNORDERED_COMPARE_FLAG) ? new SetCache : undefined; - - stack.set(array, other); - stack.set(other, array); - - // Ignore non-index properties. - while (++index < arrLength) { - var arrValue = array[index], - othValue = other[index]; - - if (customizer) { - var compared = isPartial - ? customizer(othValue, arrValue, index, other, array, stack) - : customizer(arrValue, othValue, index, array, other, stack); - } - if (compared !== undefined) { - if (compared) { - continue; - } - result = false; - break; - } - // Recursively compare arrays (susceptible to call stack limits). - if (seen) { - if (!arraySome(other, function(othValue, othIndex) { - if (!seen.has(othIndex) && - (arrValue === othValue || equalFunc(arrValue, othValue, customizer, bitmask, stack))) { - return seen.add(othIndex); - } - })) { - result = false; - break; - } - } else if (!( - arrValue === othValue || - equalFunc(arrValue, othValue, customizer, bitmask, stack) - )) { - result = false; - break; - } - } - stack['delete'](array); - stack['delete'](other); - return result; - } - - /** - * A specialized version of `baseIsEqualDeep` for comparing objects of - * the same `toStringTag`. - * - * **Note:** This function only supports comparing values with tags of - * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`. - * - * @private - * @param {Object} object The object to compare. - * @param {Object} other The other object to compare. - * @param {string} tag The `toStringTag` of the objects to compare. - * @param {Function} equalFunc The function to determine equivalents of values. - * @param {Function} customizer The function to customize comparisons. - * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual` - * for more details. - * @param {Object} stack Tracks traversed `object` and `other` objects. - * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. - */ - function equalByTag(object, other, tag, equalFunc, customizer, bitmask, stack) { - switch (tag) { - case dataViewTag: - if ((object.byteLength != other.byteLength) || - (object.byteOffset != other.byteOffset)) { - return false; - } - object = object.buffer; - other = other.buffer; - - case arrayBufferTag: - if ((object.byteLength != other.byteLength) || - !equalFunc(new Uint8Array(object), new Uint8Array(other))) { - return false; - } - return true; - - case boolTag: - case dateTag: - case numberTag: - // Coerce booleans to `1` or `0` and dates to milliseconds. - // Invalid dates are coerced to `NaN`. - return eq(+object, +other); - - case errorTag: - return object.name == other.name && object.message == other.message; - - case regexpTag: - case stringTag: - // Coerce regexes to strings and treat strings, primitives and objects, - // as equal. See http://www.ecma-international.org/ecma-262/6.0/#sec-regexp.prototype.tostring - // for more details. - return object == (other + ''); - - case mapTag: - var convert = mapToArray; - - case setTag: - var isPartial = bitmask & PARTIAL_COMPARE_FLAG; - convert || (convert = setToArray); - - if (object.size != other.size && !isPartial) { - return false; - } - // Assume cyclic values are equal. - var stacked = stack.get(object); - if (stacked) { - return stacked == other; - } - bitmask |= UNORDERED_COMPARE_FLAG; - - // Recursively compare objects (susceptible to call stack limits). - stack.set(object, other); - var result = equalArrays(convert(object), convert(other), equalFunc, customizer, bitmask, stack); - stack['delete'](object); - return result; - - case symbolTag: - if (symbolValueOf) { - return symbolValueOf.call(object) == symbolValueOf.call(other); - } - } - return false; - } - - /** - * A specialized version of `baseIsEqualDeep` for objects with support for - * partial deep comparisons. - * - * @private - * @param {Object} object The object to compare. - * @param {Object} other The other object to compare. - * @param {Function} equalFunc The function to determine equivalents of values. - * @param {Function} customizer The function to customize comparisons. - * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual` - * for more details. - * @param {Object} stack Tracks traversed `object` and `other` objects. - * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. - */ - function equalObjects(object, other, equalFunc, customizer, bitmask, stack) { - var isPartial = bitmask & PARTIAL_COMPARE_FLAG, - objProps = keys(object), - objLength = objProps.length, - othProps = keys(other), - othLength = othProps.length; - - if (objLength != othLength && !isPartial) { - return false; - } - var index = objLength; - while (index--) { - var key = objProps[index]; - if (!(isPartial ? key in other : baseHas(other, key))) { - return false; - } - } - // Assume cyclic values are equal. - var stacked = stack.get(object); - if (stacked && stack.get(other)) { - return stacked == other; - } - var result = true; - stack.set(object, other); - stack.set(other, object); - - var skipCtor = isPartial; - while (++index < objLength) { - key = objProps[index]; - var objValue = object[key], - othValue = other[key]; - - if (customizer) { - var compared = isPartial - ? customizer(othValue, objValue, key, other, object, stack) - : customizer(objValue, othValue, key, object, other, stack); - } - // Recursively compare objects (susceptible to call stack limits). - if (!(compared === undefined - ? (objValue === othValue || equalFunc(objValue, othValue, customizer, bitmask, stack)) - : compared - )) { - result = false; - break; - } - skipCtor || (skipCtor = key == 'constructor'); - } - if (result && !skipCtor) { - var objCtor = object.constructor, - othCtor = other.constructor; - - // Non `Object` object instances with different constructors are not equal. - if (objCtor != othCtor && - ('constructor' in object && 'constructor' in other) && - !(typeof objCtor == 'function' && objCtor instanceof objCtor && - typeof othCtor == 'function' && othCtor instanceof othCtor)) { - result = false; - } - } - stack['delete'](object); - stack['delete'](other); - return result; - } - - /** - * Creates an array of own enumerable property names and symbols of `object`. - * - * @private - * @param {Object} object The object to query. - * @returns {Array} Returns the array of property names and symbols. - */ - function getAllKeys(object) { - return baseGetAllKeys(object, keys, getSymbols); - } - - /** - * Creates an array of own and inherited enumerable property names and - * symbols of `object`. - * - * @private - * @param {Object} object The object to query. - * @returns {Array} Returns the array of property names and symbols. - */ - function getAllKeysIn(object) { - return baseGetAllKeys(object, keysIn, getSymbolsIn); - } - - /** - * Gets metadata for `func`. - * - * @private - * @param {Function} func The function to query. - * @returns {*} Returns the metadata for `func`. - */ - var getData = !metaMap ? noop : function(func) { - return metaMap.get(func); - }; - - /** - * Gets the name of `func`. - * - * @private - * @param {Function} func The function to query. - * @returns {string} Returns the function name. - */ - function getFuncName(func) { - var result = (func.name + ''), - array = realNames[result], - length = hasOwnProperty.call(realNames, result) ? array.length : 0; - - while (length--) { - var data = array[length], - otherFunc = data.func; - if (otherFunc == null || otherFunc == func) { - return data.name; - } - } - return result; - } - - /** - * Gets the argument placeholder value for `func`. - * - * @private - * @param {Function} func The function to inspect. - * @returns {*} Returns the placeholder value. - */ - function getHolder(func) { - var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func; - return object.placeholder; - } - - /** - * Gets the appropriate "iteratee" function. If `_.iteratee` is customized, - * this function returns the custom method, otherwise it returns `baseIteratee`. - * If arguments are provided, the chosen function is invoked with them and - * its result is returned. - * - * @private - * @param {*} [value] The value to convert to an iteratee. - * @param {number} [arity] The arity of the created iteratee. - * @returns {Function} Returns the chosen function or its result. - */ - function getIteratee() { - var result = lodash.iteratee || iteratee; - result = result === iteratee ? baseIteratee : result; - return arguments.length ? result(arguments[0], arguments[1]) : result; - } - - /** - * 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'); - - /** - * Gets the data for `map`. - * - * @private - * @param {Object} map The map to query. - * @param {string} key The reference key. - * @returns {*} Returns the map data. - */ - function getMapData(map, key) { - var data = map.__data__; - return isKeyable(key) - ? data[typeof key == 'string' ? 'string' : 'hash'] - : data.map; - } - - /** - * Gets the property names, values, and compare flags of `object`. - * - * @private - * @param {Object} object The object to query. - * @returns {Array} Returns the match data of `object`. - */ - function getMatchData(object) { - var result = keys(object), - length = result.length; - - while (length--) { - var key = result[length], - value = object[key]; - - result[length] = [key, value, isStrictComparable(value)]; - } - return result; - } - - /** - * Gets the native function at `key` of `object`. - * - * @private - * @param {Object} object The object to query. - * @param {string} key The key of the method to get. - * @returns {*} Returns the function if it's native, else `undefined`. - */ - function getNative(object, key) { - var value = getValue(object, key); - return baseIsNative(value) ? value : undefined; - } - - /** - * Gets the `[[Prototype]]` of `value`. - * - * @private - * @param {*} value The value to query. - * @returns {null|Object} Returns the `[[Prototype]]`. - */ - var getPrototype = overArg(nativeGetPrototype, Object); - - /** - * Creates an array of the own enumerable symbol properties of `object`. - * - * @private - * @param {Object} object The object to query. - * @returns {Array} Returns the array of symbols. - */ - var getSymbols = nativeGetSymbols ? overArg(nativeGetSymbols, Object) : stubArray; - - /** - * Creates an array of the own and inherited enumerable symbol properties - * of `object`. - * - * @private - * @param {Object} object The object to query. - * @returns {Array} Returns the array of symbols. - */ - var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) { - var result = []; - while (object) { - arrayPush(result, getSymbols(object)); - object = getPrototype(object); - } - return result; - }; - - /** - * Gets the `toStringTag` of `value`. - * - * @private - * @param {*} value The value to query. - * @returns {string} Returns the `toStringTag`. - */ - var getTag = baseGetTag; - - // Fallback for data views, maps, sets, and weak maps in IE 11, - // for data views in Edge, and promises in Node.js. - if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) || - (Map && getTag(new Map) != mapTag) || - (Promise && getTag(Promise.resolve()) != promiseTag) || - (Set && getTag(new Set) != setTag) || - (WeakMap && getTag(new WeakMap) != weakMapTag)) { - getTag = function(value) { - var result = objectToString.call(value), - Ctor = result == objectTag ? value.constructor : undefined, - ctorString = Ctor ? toSource(Ctor) : undefined; - - if (ctorString) { - switch (ctorString) { - case dataViewCtorString: return dataViewTag; - case mapCtorString: return mapTag; - case promiseCtorString: return promiseTag; - case setCtorString: return setTag; - case weakMapCtorString: return weakMapTag; - } - } - return result; - }; - } - - /** - * Gets the view, applying any `transforms` to the `start` and `end` positions. - * - * @private - * @param {number} start The start of the view. - * @param {number} end The end of the view. - * @param {Array} transforms The transformations to apply to the view. - * @returns {Object} Returns an object containing the `start` and `end` - * positions of the view. - */ - function getView(start, end, transforms) { - var index = -1, - length = transforms.length; - - while (++index < length) { - var data = transforms[index], - size = data.size; - - switch (data.type) { - case 'drop': start += size; break; - case 'dropRight': end -= size; break; - case 'take': end = nativeMin(end, start + size); break; - case 'takeRight': start = nativeMax(start, end - size); break; - } - } - return { 'start': start, 'end': end }; - } - - /** - * Extracts wrapper details from the `source` body comment. - * - * @private - * @param {string} source The source to inspect. - * @returns {Array} Returns the wrapper details. - */ - function getWrapDetails(source) { - var match = source.match(reWrapDetails); - return match ? match[1].split(reSplitDetails) : []; - } - - /** - * Checks if `path` exists on `object`. - * - * @private - * @param {Object} object The object to query. - * @param {Array|string} path The path to check. - * @param {Function} hasFunc The function to check properties. - * @returns {boolean} Returns `true` if `path` exists, else `false`. - */ - function hasPath(object, path, hasFunc) { - path = isKey(path, object) ? [path] : castPath(path); - - var result, - index = -1, - length = path.length; - - while (++index < length) { - var key = toKey(path[index]); - if (!(result = object != null && hasFunc(object, key))) { - break; - } - object = object[key]; - } - if (result) { - return result; - } - var length = object ? object.length : 0; - return !!length && isLength(length) && isIndex(key, length) && - (isArray(object) || isString(object) || isArguments(object)); - } - - /** - * Initializes an array clone. - * - * @private - * @param {Array} array The array to clone. - * @returns {Array} Returns the initialized clone. - */ - function initCloneArray(array) { - var length = array.length, - result = array.constructor(length); - - // Add properties assigned by `RegExp#exec`. - if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) { - result.index = array.index; - result.input = array.input; - } - return result; - } - - /** - * Initializes an object clone. - * - * @private - * @param {Object} object The object to clone. - * @returns {Object} Returns the initialized clone. - */ - function initCloneObject(object) { - return (typeof object.constructor == 'function' && !isPrototype(object)) - ? baseCreate(getPrototype(object)) - : {}; - } - - /** - * Initializes an object clone based on its `toStringTag`. - * - * **Note:** This function only supports cloning values with tags of - * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`. - * - * @private - * @param {Object} object The object to clone. - * @param {string} tag The `toStringTag` of the object to clone. - * @param {Function} cloneFunc The function to clone values. - * @param {boolean} [isDeep] Specify a deep clone. - * @returns {Object} Returns the initialized clone. - */ - function initCloneByTag(object, tag, cloneFunc, isDeep) { - var Ctor = object.constructor; - switch (tag) { - case arrayBufferTag: - return cloneArrayBuffer(object); - - case boolTag: - case dateTag: - return new Ctor(+object); - - case dataViewTag: - return cloneDataView(object, isDeep); - - case float32Tag: case float64Tag: - case int8Tag: case int16Tag: case int32Tag: - case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag: - return cloneTypedArray(object, isDeep); - - case mapTag: - return cloneMap(object, isDeep, cloneFunc); - - case numberTag: - case stringTag: - return new Ctor(object); - - case regexpTag: - return cloneRegExp(object); - - case setTag: - return cloneSet(object, isDeep, cloneFunc); - - case symbolTag: - return cloneSymbol(object); - } - } - - /** - * 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; - } - - /** - * Inserts wrapper `details` in a comment at the top of the `source` body. - * - * @private - * @param {string} source The source to modify. - * @returns {Array} details The details to insert. - * @returns {string} Returns the modified source. - */ - function insertWrapDetails(source, details) { - var length = details.length, - lastIndex = length - 1; - - details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex]; - details = details.join(length > 2 ? ', ' : ' '); - return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n'); - } - - /** - * Checks if `value` is a flattenable `arguments` object or array. - * - * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is flattenable, else `false`. - */ - function isFlattenable(value) { - return isArray(value) || isArguments(value) || - !!(spreadableSymbol && value && value[spreadableSymbol]); - } - - /** - * 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 : length; - return !!length && - (typeof value == 'number' || reIsUint.test(value)) && - (value > -1 && value % 1 == 0 && value < length); - } - - /** - * Checks if the given arguments are from an iteratee call. - * - * @private - * @param {*} value The potential iteratee value argument. - * @param {*} index The potential iteratee index or key argument. - * @param {*} object The potential iteratee object argument. - * @returns {boolean} Returns `true` if the arguments are from an iteratee call, - * else `false`. - */ - function isIterateeCall(value, index, object) { - if (!isObject(object)) { - return false; - } - var type = typeof index; - if (type == 'number' - ? (isArrayLike(object) && isIndex(index, object.length)) - : (type == 'string' && index in object) - ) { - return eq(object[index], value); - } - return false; - } - - /** - * Checks if `value` is a property name and not a property path. - * - * @private - * @param {*} value The value to check. - * @param {Object} [object] The object to query keys on. - * @returns {boolean} Returns `true` if `value` is a property name, else `false`. - */ - function isKey(value, object) { - if (isArray(value)) { - return false; - } - var type = typeof value; - if (type == 'number' || type == 'symbol' || type == 'boolean' || - value == null || isSymbol(value)) { - return true; - } - return reIsPlainProp.test(value) || !reIsDeepProp.test(value) || - (object != null && value in Object(object)); - } - - /** - * Checks if `value` is suitable for use as unique object key. - * - * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is suitable, else `false`. - */ - function isKeyable(value) { - var type = typeof value; - return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean') - ? (value !== '__proto__') - : (value === null); - } - - /** - * Checks if `func` has a lazy counterpart. - * - * @private - * @param {Function} func The function to check. - * @returns {boolean} Returns `true` if `func` has a lazy counterpart, - * else `false`. - */ - function isLaziable(func) { - var funcName = getFuncName(func), - other = lodash[funcName]; - - if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) { - return false; - } - if (func === other) { - return true; - } - var data = getData(other); - return !!data && func === data[0]; - } - - /** - * Checks if `func` has its source masked. - * - * @private - * @param {Function} func The function to check. - * @returns {boolean} Returns `true` if `func` is masked, else `false`. - */ - function isMasked(func) { - return !!maskSrcKey && (maskSrcKey in func); - } - - /** - * Checks if `func` is capable of being masked. - * - * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `func` is maskable, else `false`. - */ - var isMaskable = coreJsData ? isFunction : stubFalse; - - /** - * 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; - - return value === proto; - } - - /** - * Checks if `value` is suitable for strict equality comparisons, i.e. `===`. - * - * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` if suitable for strict - * equality comparisons, else `false`. - */ - function isStrictComparable(value) { - return value === value && !isObject(value); - } - - /** - * A specialized version of `matchesProperty` for source values suitable - * for strict equality comparisons, i.e. `===`. - * - * @private - * @param {string} key The key of the property to get. - * @param {*} srcValue The value to match. - * @returns {Function} Returns the new spec function. - */ - function matchesStrictComparable(key, srcValue) { - return function(object) { - if (object == null) { - return false; - } - return object[key] === srcValue && - (srcValue !== undefined || (key in Object(object))); - }; - } - - /** - * Merges the function metadata of `source` into `data`. - * - * Merging metadata reduces the number of wrappers used to invoke a function. - * This is possible because methods like `_.bind`, `_.curry`, and `_.partial` - * may be applied regardless of execution order. Methods like `_.ary` and - * `_.rearg` modify function arguments, making the order in which they are - * executed important, preventing the merging of metadata. However, we make - * an exception for a safe combined case where curried functions have `_.ary` - * and or `_.rearg` applied. - * - * @private - * @param {Array} data The destination metadata. - * @param {Array} source The source metadata. - * @returns {Array} Returns `data`. - */ - function mergeData(data, source) { - var bitmask = data[1], - srcBitmask = source[1], - newBitmask = bitmask | srcBitmask, - isCommon = newBitmask < (BIND_FLAG | BIND_KEY_FLAG | ARY_FLAG); - - var isCombo = - ((srcBitmask == ARY_FLAG) && (bitmask == CURRY_FLAG)) || - ((srcBitmask == ARY_FLAG) && (bitmask == REARG_FLAG) && (data[7].length <= source[8])) || - ((srcBitmask == (ARY_FLAG | REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == CURRY_FLAG)); - - // Exit early if metadata can't be merged. - if (!(isCommon || isCombo)) { - return data; - } - // Use source `thisArg` if available. - if (srcBitmask & BIND_FLAG) { - data[2] = source[2]; - // Set when currying a bound function. - newBitmask |= bitmask & BIND_FLAG ? 0 : CURRY_BOUND_FLAG; - } - // Compose partial arguments. - var value = source[3]; - if (value) { - var partials = data[3]; - data[3] = partials ? composeArgs(partials, value, source[4]) : value; - data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4]; - } - // Compose partial right arguments. - value = source[5]; - if (value) { - partials = data[5]; - data[5] = partials ? composeArgsRight(partials, value, source[6]) : value; - data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6]; - } - // Use source `argPos` if available. - value = source[7]; - if (value) { - data[7] = value; - } - // Use source `ary` if it's smaller. - if (srcBitmask & ARY_FLAG) { - data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]); - } - // Use source `arity` if one is not provided. - if (data[9] == null) { - data[9] = source[9]; - } - // Use source `func` and merge bitmasks. - data[0] = source[0]; - data[1] = newBitmask; - - return data; - } - - /** - * Used by `_.defaultsDeep` to customize its `_.merge` use. - * - * @private - * @param {*} objValue The destination value. - * @param {*} srcValue The source value. - * @param {string} key The key of the property to merge. - * @param {Object} object The parent object of `objValue`. - * @param {Object} source The parent object of `srcValue`. - * @param {Object} [stack] Tracks traversed source values and their merged - * counterparts. - * @returns {*} Returns the value to assign. - */ - function mergeDefaults(objValue, srcValue, key, object, source, stack) { - if (isObject(objValue) && isObject(srcValue)) { - // Recursively merge objects and arrays (susceptible to call stack limits). - stack.set(srcValue, objValue); - baseMerge(objValue, srcValue, undefined, mergeDefaults, stack); - stack['delete'](srcValue); - } - return objValue; - } - - /** - * Gets the parent value at `path` of `object`. - * - * @private - * @param {Object} object The object to query. - * @param {Array} path The path to get the parent value of. - * @returns {*} Returns the parent value. - */ - function parent(object, path) { - return path.length == 1 ? object : baseGet(object, baseSlice(path, 0, -1)); - } - - /** - * Reorder `array` according to the specified indexes where the element at - * the first index is assigned as the first element, the element at - * the second index is assigned as the second element, and so on. - * - * @private - * @param {Array} array The array to reorder. - * @param {Array} indexes The arranged array indexes. - * @returns {Array} Returns `array`. - */ - function reorder(array, indexes) { - var arrLength = array.length, - length = nativeMin(indexes.length, arrLength), - oldArray = copyArray(array); - - while (length--) { - var index = indexes[length]; - array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined; - } - return array; - } - - /** - * Sets metadata for `func`. - * - * **Note:** If this function becomes hot, i.e. is invoked a lot in a short - * period of time, it will trip its breaker and transition to an identity - * function to avoid garbage collection pauses in V8. See - * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070) - * for more details. - * - * @private - * @param {Function} func The function to associate metadata with. - * @param {*} data The metadata. - * @returns {Function} Returns `func`. - */ - var setData = (function() { - var count = 0, - lastCalled = 0; - - return function(key, value) { - var stamp = now(), - remaining = HOT_SPAN - (stamp - lastCalled); - - lastCalled = stamp; - if (remaining > 0) { - if (++count >= HOT_COUNT) { - return key; - } - } else { - count = 0; - } - return baseSetData(key, value); - }; - }()); - - /** - * Sets the `toString` method of `wrapper` to mimic the source of `reference` - * with wrapper details in a comment at the top of the source body. - * - * @private - * @param {Function} wrapper The function to modify. - * @param {Function} reference The reference function. - * @param {number} bitmask The bitmask flags. See `createWrap` for more details. - * @returns {Function} Returns `wrapper`. - */ - var setWrapToString = !defineProperty ? identity : function(wrapper, reference, bitmask) { - var source = (reference + ''); - return defineProperty(wrapper, 'toString', { - 'configurable': true, - 'enumerable': false, - 'value': constant(insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask))) - }); - }; - - /** - * Converts `string` to a property path array. - * - * @private - * @param {string} string The string to convert. - * @returns {Array} Returns the property path array. - */ - var stringToPath = memoize(function(string) { - string = toString(string); - - var result = []; - if (reLeadingDot.test(string)) { - result.push(''); - } - string.replace(rePropName, function(match, number, quote, string) { - result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match)); - }); - return result; - }); - - /** - * Converts `value` to a string key if it's not a string or symbol. - * - * @private - * @param {*} value The value to inspect. - * @returns {string|symbol} Returns the key. - */ - function toKey(value) { - if (typeof value == 'string' || isSymbol(value)) { - return value; - } - var result = (value + ''); - return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result; - } - - /** - * Converts `func` to its source code. - * - * @private - * @param {Function} func The function to process. - * @returns {string} Returns the source code. - */ - function toSource(func) { - if (func != null) { - try { - return funcToString.call(func); - } catch (e) {} - try { - return (func + ''); - } catch (e) {} - } - return ''; - } - - /** - * Updates wrapper `details` based on `bitmask` flags. - * - * @private - * @returns {Array} details The details to modify. - * @param {number} bitmask The bitmask flags. See `createWrap` for more details. - * @returns {Array} Returns `details`. - */ - function updateWrapDetails(details, bitmask) { - arrayEach(wrapFlags, function(pair) { - var value = '_.' + pair[0]; - if ((bitmask & pair[1]) && !arrayIncludes(details, value)) { - details.push(value); - } - }); - return details.sort(); - } - - /** - * Creates a clone of `wrapper`. - * - * @private - * @param {Object} wrapper The wrapper to clone. - * @returns {Object} Returns the cloned wrapper. - */ - function wrapperClone(wrapper) { - if (wrapper instanceof LazyWrapper) { - return wrapper.clone(); - } - var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__); - result.__actions__ = copyArray(wrapper.__actions__); - result.__index__ = wrapper.__index__; - result.__values__ = wrapper.__values__; - return result; - } - - /*------------------------------------------------------------------------*/ - - /** - * Creates an array of elements split into groups the length of `size`. - * If `array` can't be split evenly, the final chunk will be the remaining - * elements. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Array - * @param {Array} array The array to process. - * @param {number} [size=1] The length of each chunk - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. - * @returns {Array} Returns the new array of chunks. - * @example - * - * _.chunk(['a', 'b', 'c', 'd'], 2); - * // => [['a', 'b'], ['c', 'd']] - * - * _.chunk(['a', 'b', 'c', 'd'], 3); - * // => [['a', 'b', 'c'], ['d']] - */ - function chunk(array, size, guard) { - if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) { - size = 1; - } else { - size = nativeMax(toInteger(size), 0); - } - var length = array ? array.length : 0; - if (!length || size < 1) { - return []; - } - var index = 0, - resIndex = 0, - result = Array(nativeCeil(length / size)); - - while (index < length) { - result[resIndex++] = baseSlice(array, index, (index += size)); - } - return result; - } - - /** - * Creates an array with all falsey values removed. The values `false`, `null`, - * `0`, `""`, `undefined`, and `NaN` are falsey. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Array - * @param {Array} array The array to compact. - * @returns {Array} Returns the new array of filtered values. - * @example - * - * _.compact([0, 1, false, 2, '', 3]); - * // => [1, 2, 3] - */ - function compact(array) { - var index = -1, - length = array ? array.length : 0, - resIndex = 0, - result = []; - - while (++index < length) { - var value = array[index]; - if (value) { - result[resIndex++] = value; - } - } - return result; - } - - /** - * Creates a new array concatenating `array` with any additional arrays - * and/or values. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} array The array to concatenate. - * @param {...*} [values] The values to concatenate. - * @returns {Array} Returns the new concatenated array. - * @example - * - * var array = [1]; - * var other = _.concat(array, 2, [3], [[4]]); - * - * console.log(other); - * // => [1, 2, 3, [4]] - * - * console.log(array); - * // => [1] - */ - function concat() { - var length = arguments.length, - args = Array(length ? length - 1 : 0), - array = arguments[0], - index = length; - - while (index--) { - args[index - 1] = arguments[index]; - } - return length - ? arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1)) - : []; - } - - /** - * Creates an array of `array` values not included in the other given arrays - * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero) - * for equality comparisons. The order of result values is determined by the - * order they occur in the first array. - * - * **Note:** Unlike `_.pullAll`, this method returns a new array. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Array - * @param {Array} array The array to inspect. - * @param {...Array} [values] The values to exclude. - * @returns {Array} Returns the new array of filtered values. - * @see _.without, _.xor - * @example - * - * _.difference([2, 1], [2, 3]); - * // => [1] - */ - var difference = baseRest(function(array, values) { - return isArrayLikeObject(array) - ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true)) - : []; - }); - - /** - * This method is like `_.difference` except that it accepts `iteratee` which - * is invoked for each element of `array` and `values` to generate the criterion - * by which they're compared. Result values are chosen from the first array. - * The iteratee is invoked with one argument: (value). - * - * **Note:** Unlike `_.pullAllBy`, this method returns a new array. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} array The array to inspect. - * @param {...Array} [values] The values to exclude. - * @param {Function} [iteratee=_.identity] The iteratee invoked per element. - * @returns {Array} Returns the new array of filtered values. - * @example - * - * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor); - * // => [1.2] - * - * // The `_.property` iteratee shorthand. - * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x'); - * // => [{ 'x': 2 }] - */ - var differenceBy = baseRest(function(array, values) { - var iteratee = last(values); - if (isArrayLikeObject(iteratee)) { - iteratee = undefined; - } - return isArrayLikeObject(array) - ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2)) - : []; - }); - - /** - * This method is like `_.difference` except that it accepts `comparator` - * which is invoked to compare elements of `array` to `values`. Result values - * are chosen from the first array. The comparator is invoked with two arguments: - * (arrVal, othVal). - * - * **Note:** Unlike `_.pullAllWith`, this method returns a new array. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} array The array to inspect. - * @param {...Array} [values] The values to exclude. - * @param {Function} [comparator] The comparator invoked per element. - * @returns {Array} Returns the new array of filtered values. - * @example - * - * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; - * - * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual); - * // => [{ 'x': 2, 'y': 1 }] - */ - var differenceWith = baseRest(function(array, values) { - var comparator = last(values); - if (isArrayLikeObject(comparator)) { - comparator = undefined; - } - return isArrayLikeObject(array) - ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator) - : []; - }); - - /** - * Creates a slice of `array` with `n` elements dropped from the beginning. - * - * @static - * @memberOf _ - * @since 0.5.0 - * @category Array - * @param {Array} array The array to query. - * @param {number} [n=1] The number of elements to drop. - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. - * @returns {Array} Returns the slice of `array`. - * @example - * - * _.drop([1, 2, 3]); - * // => [2, 3] - * - * _.drop([1, 2, 3], 2); - * // => [3] - * - * _.drop([1, 2, 3], 5); - * // => [] - * - * _.drop([1, 2, 3], 0); - * // => [1, 2, 3] - */ - function drop(array, n, guard) { - var length = array ? array.length : 0; - if (!length) { - return []; - } - n = (guard || n === undefined) ? 1 : toInteger(n); - return baseSlice(array, n < 0 ? 0 : n, length); - } - - /** - * Creates a slice of `array` with `n` elements dropped from the end. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Array - * @param {Array} array The array to query. - * @param {number} [n=1] The number of elements to drop. - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. - * @returns {Array} Returns the slice of `array`. - * @example - * - * _.dropRight([1, 2, 3]); - * // => [1, 2] - * - * _.dropRight([1, 2, 3], 2); - * // => [1] - * - * _.dropRight([1, 2, 3], 5); - * // => [] - * - * _.dropRight([1, 2, 3], 0); - * // => [1, 2, 3] - */ - function dropRight(array, n, guard) { - var length = array ? array.length : 0; - if (!length) { - return []; - } - n = (guard || n === undefined) ? 1 : toInteger(n); - n = length - n; - return baseSlice(array, 0, n < 0 ? 0 : n); - } - - /** - * Creates a slice of `array` excluding elements dropped from the end. - * Elements are dropped until `predicate` returns falsey. The predicate is - * invoked with three arguments: (value, index, array). - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Array - * @param {Array} array The array to query. - * @param {Function} [predicate=_.identity] The function invoked per iteration. - * @returns {Array} Returns the slice of `array`. - * @example - * - * var users = [ - * { 'user': 'barney', 'active': true }, - * { 'user': 'fred', 'active': false }, - * { 'user': 'pebbles', 'active': false } - * ]; - * - * _.dropRightWhile(users, function(o) { return !o.active; }); - * // => objects for ['barney'] - * - * // The `_.matches` iteratee shorthand. - * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false }); - * // => objects for ['barney', 'fred'] - * - * // The `_.matchesProperty` iteratee shorthand. - * _.dropRightWhile(users, ['active', false]); - * // => objects for ['barney'] - * - * // The `_.property` iteratee shorthand. - * _.dropRightWhile(users, 'active'); - * // => objects for ['barney', 'fred', 'pebbles'] - */ - function dropRightWhile(array, predicate) { - return (array && array.length) - ? baseWhile(array, getIteratee(predicate, 3), true, true) - : []; - } - - /** - * Creates a slice of `array` excluding elements dropped from the beginning. - * Elements are dropped until `predicate` returns falsey. The predicate is - * invoked with three arguments: (value, index, array). - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Array - * @param {Array} array The array to query. - * @param {Function} [predicate=_.identity] - * The function invoked per iteration. - * @returns {Array} Returns the slice of `array`. - * @example - * - * var users = [ - * { 'user': 'barney', 'active': false }, - * { 'user': 'fred', 'active': false }, - * { 'user': 'pebbles', 'active': true } - * ]; - * - * _.dropWhile(users, function(o) { return !o.active; }); - * // => objects for ['pebbles'] - * - * // The `_.matches` iteratee shorthand. - * _.dropWhile(users, { 'user': 'barney', 'active': false }); - * // => objects for ['fred', 'pebbles'] - * - * // The `_.matchesProperty` iteratee shorthand. - * _.dropWhile(users, ['active', false]); - * // => objects for ['pebbles'] - * - * // The `_.property` iteratee shorthand. - * _.dropWhile(users, 'active'); - * // => objects for ['barney', 'fred', 'pebbles'] - */ - function dropWhile(array, predicate) { - return (array && array.length) - ? baseWhile(array, getIteratee(predicate, 3), true) - : []; - } - - /** - * Fills elements of `array` with `value` from `start` up to, but not - * including, `end`. - * - * **Note:** This method mutates `array`. - * - * @static - * @memberOf _ - * @since 3.2.0 - * @category Array - * @param {Array} array The array to fill. - * @param {*} value The value to fill `array` with. - * @param {number} [start=0] The start position. - * @param {number} [end=array.length] The end position. - * @returns {Array} Returns `array`. - * @example - * - * var array = [1, 2, 3]; - * - * _.fill(array, 'a'); - * console.log(array); - * // => ['a', 'a', 'a'] - * - * _.fill(Array(3), 2); - * // => [2, 2, 2] - * - * _.fill([4, 6, 8, 10], '*', 1, 3); - * // => [4, '*', '*', 10] - */ - function fill(array, value, start, end) { - var length = array ? array.length : 0; - if (!length) { - return []; - } - if (start && typeof start != 'number' && isIterateeCall(array, value, start)) { - start = 0; - end = length; - } - return baseFill(array, value, start, end); - } - - /** - * This method is like `_.find` except that it returns the index of the first - * element `predicate` returns truthy for instead of the element itself. - * - * @static - * @memberOf _ - * @since 1.1.0 - * @category Array - * @param {Array} array The array to search. - * @param {Function} [predicate=_.identity] - * The function invoked per iteration. - * @param {number} [fromIndex=0] The index to search from. - * @returns {number} Returns the index of the found element, else `-1`. - * @example - * - * var users = [ - * { 'user': 'barney', 'active': false }, - * { 'user': 'fred', 'active': false }, - * { 'user': 'pebbles', 'active': true } - * ]; - * - * _.findIndex(users, function(o) { return o.user == 'barney'; }); - * // => 0 - * - * // The `_.matches` iteratee shorthand. - * _.findIndex(users, { 'user': 'fred', 'active': false }); - * // => 1 - * - * // The `_.matchesProperty` iteratee shorthand. - * _.findIndex(users, ['active', false]); - * // => 0 - * - * // The `_.property` iteratee shorthand. - * _.findIndex(users, 'active'); - * // => 2 - */ - function findIndex(array, predicate, fromIndex) { - var length = array ? array.length : 0; - if (!length) { - return -1; - } - var index = fromIndex == null ? 0 : toInteger(fromIndex); - if (index < 0) { - index = nativeMax(length + index, 0); - } - return baseFindIndex(array, getIteratee(predicate, 3), index); - } - - /** - * This method is like `_.findIndex` except that it iterates over elements - * of `collection` from right to left. - * - * @static - * @memberOf _ - * @since 2.0.0 - * @category Array - * @param {Array} array The array to search. - * @param {Function} [predicate=_.identity] - * The function invoked per iteration. - * @param {number} [fromIndex=array.length-1] The index to search from. - * @returns {number} Returns the index of the found element, else `-1`. - * @example - * - * var users = [ - * { 'user': 'barney', 'active': true }, - * { 'user': 'fred', 'active': false }, - * { 'user': 'pebbles', 'active': false } - * ]; - * - * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; }); - * // => 2 - * - * // The `_.matches` iteratee shorthand. - * _.findLastIndex(users, { 'user': 'barney', 'active': true }); - * // => 0 - * - * // The `_.matchesProperty` iteratee shorthand. - * _.findLastIndex(users, ['active', false]); - * // => 2 - * - * // The `_.property` iteratee shorthand. - * _.findLastIndex(users, 'active'); - * // => 0 - */ - function findLastIndex(array, predicate, fromIndex) { - var length = array ? array.length : 0; - if (!length) { - return -1; - } - var index = length - 1; - if (fromIndex !== undefined) { - index = toInteger(fromIndex); - index = fromIndex < 0 - ? nativeMax(length + index, 0) - : nativeMin(index, length - 1); - } - return baseFindIndex(array, getIteratee(predicate, 3), index, true); - } - - /** - * Flattens `array` a single level deep. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Array - * @param {Array} array The array to flatten. - * @returns {Array} Returns the new flattened array. - * @example - * - * _.flatten([1, [2, [3, [4]], 5]]); - * // => [1, 2, [3, [4]], 5] - */ - function flatten(array) { - var length = array ? array.length : 0; - return length ? baseFlatten(array, 1) : []; - } - - /** - * Recursively flattens `array`. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Array - * @param {Array} array The array to flatten. - * @returns {Array} Returns the new flattened array. - * @example - * - * _.flattenDeep([1, [2, [3, [4]], 5]]); - * // => [1, 2, 3, 4, 5] - */ - function flattenDeep(array) { - var length = array ? array.length : 0; - return length ? baseFlatten(array, INFINITY) : []; - } - - /** - * Recursively flatten `array` up to `depth` times. - * - * @static - * @memberOf _ - * @since 4.4.0 - * @category Array - * @param {Array} array The array to flatten. - * @param {number} [depth=1] The maximum recursion depth. - * @returns {Array} Returns the new flattened array. - * @example - * - * var array = [1, [2, [3, [4]], 5]]; - * - * _.flattenDepth(array, 1); - * // => [1, 2, [3, [4]], 5] - * - * _.flattenDepth(array, 2); - * // => [1, 2, 3, [4], 5] - */ - function flattenDepth(array, depth) { - var length = array ? array.length : 0; - if (!length) { - return []; - } - depth = depth === undefined ? 1 : toInteger(depth); - return baseFlatten(array, depth); - } - - /** - * The inverse of `_.toPairs`; this method returns an object composed - * from key-value `pairs`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} pairs The key-value pairs. - * @returns {Object} Returns the new object. - * @example - * - * _.fromPairs([['a', 1], ['b', 2]]); - * // => { 'a': 1, 'b': 2 } - */ - function fromPairs(pairs) { - var index = -1, - length = pairs ? pairs.length : 0, - result = {}; - - while (++index < length) { - var pair = pairs[index]; - result[pair[0]] = pair[1]; - } - return result; - } - - /** - * Gets the first element of `array`. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @alias first - * @category Array - * @param {Array} array The array to query. - * @returns {*} Returns the first element of `array`. - * @example - * - * _.head([1, 2, 3]); - * // => 1 - * - * _.head([]); - * // => undefined - */ - function head(array) { - return (array && array.length) ? array[0] : undefined; - } - - /** - * Gets the index at which the first occurrence of `value` is found in `array` - * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero) - * for equality comparisons. If `fromIndex` is negative, it's used as the - * offset from the end of `array`. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Array - * @param {Array} array The array to search. - * @param {*} value The value to search for. - * @param {number} [fromIndex=0] The index to search from. - * @returns {number} Returns the index of the matched value, else `-1`. - * @example - * - * _.indexOf([1, 2, 1, 2], 2); - * // => 1 - * - * // Search from the `fromIndex`. - * _.indexOf([1, 2, 1, 2], 2, 2); - * // => 3 - */ - function indexOf(array, value, fromIndex) { - var length = array ? array.length : 0; - if (!length) { - return -1; - } - var index = fromIndex == null ? 0 : toInteger(fromIndex); - if (index < 0) { - index = nativeMax(length + index, 0); - } - return baseIndexOf(array, value, index); - } - - /** - * Gets all but the last element of `array`. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Array - * @param {Array} array The array to query. - * @returns {Array} Returns the slice of `array`. - * @example - * - * _.initial([1, 2, 3]); - * // => [1, 2] - */ - function initial(array) { - return dropRight(array, 1); - } - - /** - * Creates an array of unique values that are included in all given arrays - * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero) - * for equality comparisons. The order of result values is determined by the - * order they occur in the first array. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Array - * @param {...Array} [arrays] The arrays to inspect. - * @returns {Array} Returns the new array of intersecting values. - * @example - * - * _.intersection([2, 1], [2, 3]); - * // => [2] - */ - var intersection = baseRest(function(arrays) { - var mapped = arrayMap(arrays, castArrayLikeObject); - return (mapped.length && mapped[0] === arrays[0]) - ? baseIntersection(mapped) - : []; - }); - - /** - * This method is like `_.intersection` except that it accepts `iteratee` - * which is invoked for each element of each `arrays` to generate the criterion - * by which they're compared. Result values are chosen from the first array. - * The iteratee is invoked with one argument: (value). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {...Array} [arrays] The arrays to inspect. - * @param {Function} [iteratee=_.identity] The iteratee invoked per element. - * @returns {Array} Returns the new array of intersecting values. - * @example - * - * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor); - * // => [2.1] - * - * // The `_.property` iteratee shorthand. - * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); - * // => [{ 'x': 1 }] - */ - var intersectionBy = baseRest(function(arrays) { - var iteratee = last(arrays), - mapped = arrayMap(arrays, castArrayLikeObject); - - if (iteratee === last(mapped)) { - iteratee = undefined; - } else { - mapped.pop(); - } - return (mapped.length && mapped[0] === arrays[0]) - ? baseIntersection(mapped, getIteratee(iteratee, 2)) - : []; - }); - - /** - * This method is like `_.intersection` except that it accepts `comparator` - * which is invoked to compare elements of `arrays`. Result values are chosen - * from the first array. The comparator is invoked with two arguments: - * (arrVal, othVal). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {...Array} [arrays] The arrays to inspect. - * @param {Function} [comparator] The comparator invoked per element. - * @returns {Array} Returns the new array of intersecting values. - * @example - * - * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; - * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; - * - * _.intersectionWith(objects, others, _.isEqual); - * // => [{ 'x': 1, 'y': 2 }] - */ - var intersectionWith = baseRest(function(arrays) { - var comparator = last(arrays), - mapped = arrayMap(arrays, castArrayLikeObject); - - if (comparator === last(mapped)) { - comparator = undefined; - } else { - mapped.pop(); - } - return (mapped.length && mapped[0] === arrays[0]) - ? baseIntersection(mapped, undefined, comparator) - : []; - }); - - /** - * Converts all elements in `array` into a string separated by `separator`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} array The array to convert. - * @param {string} [separator=','] The element separator. - * @returns {string} Returns the joined string. - * @example - * - * _.join(['a', 'b', 'c'], '~'); - * // => 'a~b~c' - */ - function join(array, separator) { - return array ? nativeJoin.call(array, separator) : ''; - } - - /** - * Gets the last element of `array`. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Array - * @param {Array} array The array to query. - * @returns {*} Returns the last element of `array`. - * @example - * - * _.last([1, 2, 3]); - * // => 3 - */ - function last(array) { - var length = array ? array.length : 0; - return length ? array[length - 1] : undefined; - } - - /** - * This method is like `_.indexOf` except that it iterates over elements of - * `array` from right to left. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Array - * @param {Array} array The array to search. - * @param {*} value The value to search for. - * @param {number} [fromIndex=array.length-1] The index to search from. - * @returns {number} Returns the index of the matched value, else `-1`. - * @example - * - * _.lastIndexOf([1, 2, 1, 2], 2); - * // => 3 - * - * // Search from the `fromIndex`. - * _.lastIndexOf([1, 2, 1, 2], 2, 2); - * // => 1 - */ - function lastIndexOf(array, value, fromIndex) { - var length = array ? array.length : 0; - if (!length) { - return -1; - } - var index = length; - if (fromIndex !== undefined) { - index = toInteger(fromIndex); - index = ( - index < 0 - ? nativeMax(length + index, 0) - : nativeMin(index, length - 1) - ) + 1; - } - if (value !== value) { - return baseFindIndex(array, baseIsNaN, index - 1, true); - } - while (index--) { - if (array[index] === value) { - return index; - } - } - return -1; - } - - /** - * Gets the element at index `n` of `array`. If `n` is negative, the nth - * element from the end is returned. - * - * @static - * @memberOf _ - * @since 4.11.0 - * @category Array - * @param {Array} array The array to query. - * @param {number} [n=0] The index of the element to return. - * @returns {*} Returns the nth element of `array`. - * @example - * - * var array = ['a', 'b', 'c', 'd']; - * - * _.nth(array, 1); - * // => 'b' - * - * _.nth(array, -2); - * // => 'c'; - */ - function nth(array, n) { - return (array && array.length) ? baseNth(array, toInteger(n)) : undefined; - } - - /** - * Removes all given values from `array` using - * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero) - * for equality comparisons. - * - * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove` - * to remove elements from an array by predicate. - * - * @static - * @memberOf _ - * @since 2.0.0 - * @category Array - * @param {Array} array The array to modify. - * @param {...*} [values] The values to remove. - * @returns {Array} Returns `array`. - * @example - * - * var array = ['a', 'b', 'c', 'a', 'b', 'c']; - * - * _.pull(array, 'a', 'c'); - * console.log(array); - * // => ['b', 'b'] - */ - var pull = baseRest(pullAll); - - /** - * This method is like `_.pull` except that it accepts an array of values to remove. - * - * **Note:** Unlike `_.difference`, this method mutates `array`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} array The array to modify. - * @param {Array} values The values to remove. - * @returns {Array} Returns `array`. - * @example - * - * var array = ['a', 'b', 'c', 'a', 'b', 'c']; - * - * _.pullAll(array, ['a', 'c']); - * console.log(array); - * // => ['b', 'b'] - */ - function pullAll(array, values) { - return (array && array.length && values && values.length) - ? basePullAll(array, values) - : array; - } - - /** - * This method is like `_.pullAll` except that it accepts `iteratee` which is - * invoked for each element of `array` and `values` to generate the criterion - * by which they're compared. The iteratee is invoked with one argument: (value). - * - * **Note:** Unlike `_.differenceBy`, this method mutates `array`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} array The array to modify. - * @param {Array} values The values to remove. - * @param {Function} [iteratee=_.identity] - * The iteratee invoked per element. - * @returns {Array} Returns `array`. - * @example - * - * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }]; - * - * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x'); - * console.log(array); - * // => [{ 'x': 2 }] - */ - function pullAllBy(array, values, iteratee) { - return (array && array.length && values && values.length) - ? basePullAll(array, values, getIteratee(iteratee, 2)) - : array; - } - - /** - * This method is like `_.pullAll` except that it accepts `comparator` which - * is invoked to compare elements of `array` to `values`. The comparator is - * invoked with two arguments: (arrVal, othVal). - * - * **Note:** Unlike `_.differenceWith`, this method mutates `array`. - * - * @static - * @memberOf _ - * @since 4.6.0 - * @category Array - * @param {Array} array The array to modify. - * @param {Array} values The values to remove. - * @param {Function} [comparator] The comparator invoked per element. - * @returns {Array} Returns `array`. - * @example - * - * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }]; - * - * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual); - * console.log(array); - * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }] - */ - function pullAllWith(array, values, comparator) { - return (array && array.length && values && values.length) - ? basePullAll(array, values, undefined, comparator) - : array; - } - - /** - * Removes elements from `array` corresponding to `indexes` and returns an - * array of removed elements. - * - * **Note:** Unlike `_.at`, this method mutates `array`. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Array - * @param {Array} array The array to modify. - * @param {...(number|number[])} [indexes] The indexes of elements to remove. - * @returns {Array} Returns the new array of removed elements. - * @example - * - * var array = ['a', 'b', 'c', 'd']; - * var pulled = _.pullAt(array, [1, 3]); - * - * console.log(array); - * // => ['a', 'c'] - * - * console.log(pulled); - * // => ['b', 'd'] - */ - var pullAt = baseRest(function(array, indexes) { - indexes = baseFlatten(indexes, 1); - - var length = array ? array.length : 0, - result = baseAt(array, indexes); - - basePullAt(array, arrayMap(indexes, function(index) { - return isIndex(index, length) ? +index : index; - }).sort(compareAscending)); - - return result; - }); - - /** - * Removes all elements from `array` that `predicate` returns truthy for - * and returns an array of the removed elements. The predicate is invoked - * with three arguments: (value, index, array). - * - * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull` - * to pull elements from an array by value. - * - * @static - * @memberOf _ - * @since 2.0.0 - * @category Array - * @param {Array} array The array to modify. - * @param {Function} [predicate=_.identity] - * The function invoked per iteration. - * @returns {Array} Returns the new array of removed elements. - * @example - * - * var array = [1, 2, 3, 4]; - * var evens = _.remove(array, function(n) { - * return n % 2 == 0; - * }); - * - * console.log(array); - * // => [1, 3] - * - * console.log(evens); - * // => [2, 4] - */ - function remove(array, predicate) { - var result = []; - if (!(array && array.length)) { - return result; - } - var index = -1, - indexes = [], - length = array.length; - - predicate = getIteratee(predicate, 3); - while (++index < length) { - var value = array[index]; - if (predicate(value, index, array)) { - result.push(value); - indexes.push(index); - } - } - basePullAt(array, indexes); - return result; - } - - /** - * Reverses `array` so that the first element becomes the last, the second - * element becomes the second to last, and so on. - * - * **Note:** This method mutates `array` and is based on - * [`Array#reverse`](https://mdn.io/Array/reverse). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} array The array to modify. - * @returns {Array} Returns `array`. - * @example - * - * var array = [1, 2, 3]; - * - * _.reverse(array); - * // => [3, 2, 1] - * - * console.log(array); - * // => [3, 2, 1] - */ - function reverse(array) { - return array ? nativeReverse.call(array) : array; - } - - /** - * Creates a slice of `array` from `start` up to, but not including, `end`. - * - * **Note:** This method is used instead of - * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are - * returned. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Array - * @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 slice(array, start, end) { - var length = array ? array.length : 0; - if (!length) { - return []; - } - if (end && typeof end != 'number' && isIterateeCall(array, start, end)) { - start = 0; - end = length; - } - else { - start = start == null ? 0 : toInteger(start); - end = end === undefined ? length : toInteger(end); - } - return baseSlice(array, start, end); - } - - /** - * Uses a binary search to determine the lowest index at which `value` - * should be inserted into `array` in order to maintain its sort order. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Array - * @param {Array} array The sorted array to inspect. - * @param {*} value The value to evaluate. - * @returns {number} Returns the index at which `value` should be inserted - * into `array`. - * @example - * - * _.sortedIndex([30, 50], 40); - * // => 1 - */ - function sortedIndex(array, value) { - return baseSortedIndex(array, value); - } - - /** - * This method is like `_.sortedIndex` except that it accepts `iteratee` - * which is invoked for `value` and each element of `array` to compute their - * sort ranking. The iteratee is invoked with one argument: (value). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} array The sorted array to inspect. - * @param {*} value The value to evaluate. - * @param {Function} [iteratee=_.identity] - * The iteratee invoked per element. - * @returns {number} Returns the index at which `value` should be inserted - * into `array`. - * @example - * - * var objects = [{ 'x': 4 }, { 'x': 5 }]; - * - * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; }); - * // => 0 - * - * // The `_.property` iteratee shorthand. - * _.sortedIndexBy(objects, { 'x': 4 }, 'x'); - * // => 0 - */ - function sortedIndexBy(array, value, iteratee) { - return baseSortedIndexBy(array, value, getIteratee(iteratee, 2)); - } - - /** - * This method is like `_.indexOf` except that it performs a binary - * search on a sorted `array`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} array The array to search. - * @param {*} value The value to search for. - * @returns {number} Returns the index of the matched value, else `-1`. - * @example - * - * _.sortedIndexOf([4, 5, 5, 5, 6], 5); - * // => 1 - */ - function sortedIndexOf(array, value) { - var length = array ? array.length : 0; - if (length) { - var index = baseSortedIndex(array, value); - if (index < length && eq(array[index], value)) { - return index; - } - } - return -1; - } - - /** - * This method is like `_.sortedIndex` except that it returns the highest - * index at which `value` should be inserted into `array` in order to - * maintain its sort order. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Array - * @param {Array} array The sorted array to inspect. - * @param {*} value The value to evaluate. - * @returns {number} Returns the index at which `value` should be inserted - * into `array`. - * @example - * - * _.sortedLastIndex([4, 5, 5, 5, 6], 5); - * // => 4 - */ - function sortedLastIndex(array, value) { - return baseSortedIndex(array, value, true); - } - - /** - * This method is like `_.sortedLastIndex` except that it accepts `iteratee` - * which is invoked for `value` and each element of `array` to compute their - * sort ranking. The iteratee is invoked with one argument: (value). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} array The sorted array to inspect. - * @param {*} value The value to evaluate. - * @param {Function} [iteratee=_.identity] - * The iteratee invoked per element. - * @returns {number} Returns the index at which `value` should be inserted - * into `array`. - * @example - * - * var objects = [{ 'x': 4 }, { 'x': 5 }]; - * - * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; }); - * // => 1 - * - * // The `_.property` iteratee shorthand. - * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x'); - * // => 1 - */ - function sortedLastIndexBy(array, value, iteratee) { - return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true); - } - - /** - * This method is like `_.lastIndexOf` except that it performs a binary - * search on a sorted `array`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} array The array to search. - * @param {*} value The value to search for. - * @returns {number} Returns the index of the matched value, else `-1`. - * @example - * - * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5); - * // => 3 - */ - function sortedLastIndexOf(array, value) { - var length = array ? array.length : 0; - if (length) { - var index = baseSortedIndex(array, value, true) - 1; - if (eq(array[index], value)) { - return index; - } - } - return -1; - } - - /** - * This method is like `_.uniq` except that it's designed and optimized - * for sorted arrays. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} array The array to inspect. - * @returns {Array} Returns the new duplicate free array. - * @example - * - * _.sortedUniq([1, 1, 2]); - * // => [1, 2] - */ - function sortedUniq(array) { - return (array && array.length) - ? baseSortedUniq(array) - : []; - } - - /** - * This method is like `_.uniqBy` except that it's designed and optimized - * for sorted arrays. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} array The array to inspect. - * @param {Function} [iteratee] The iteratee invoked per element. - * @returns {Array} Returns the new duplicate free array. - * @example - * - * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor); - * // => [1.1, 2.3] - */ - function sortedUniqBy(array, iteratee) { - return (array && array.length) - ? baseSortedUniq(array, getIteratee(iteratee, 2)) - : []; - } - - /** - * Gets all but the first element of `array`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} array The array to query. - * @returns {Array} Returns the slice of `array`. - * @example - * - * _.tail([1, 2, 3]); - * // => [2, 3] - */ - function tail(array) { - return drop(array, 1); - } - - /** - * Creates a slice of `array` with `n` elements taken from the beginning. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Array - * @param {Array} array The array to query. - * @param {number} [n=1] The number of elements to take. - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. - * @returns {Array} Returns the slice of `array`. - * @example - * - * _.take([1, 2, 3]); - * // => [1] - * - * _.take([1, 2, 3], 2); - * // => [1, 2] - * - * _.take([1, 2, 3], 5); - * // => [1, 2, 3] - * - * _.take([1, 2, 3], 0); - * // => [] - */ - function take(array, n, guard) { - if (!(array && array.length)) { - return []; - } - n = (guard || n === undefined) ? 1 : toInteger(n); - return baseSlice(array, 0, n < 0 ? 0 : n); - } - - /** - * Creates a slice of `array` with `n` elements taken from the end. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Array - * @param {Array} array The array to query. - * @param {number} [n=1] The number of elements to take. - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. - * @returns {Array} Returns the slice of `array`. - * @example - * - * _.takeRight([1, 2, 3]); - * // => [3] - * - * _.takeRight([1, 2, 3], 2); - * // => [2, 3] - * - * _.takeRight([1, 2, 3], 5); - * // => [1, 2, 3] - * - * _.takeRight([1, 2, 3], 0); - * // => [] - */ - function takeRight(array, n, guard) { - var length = array ? array.length : 0; - if (!length) { - return []; - } - n = (guard || n === undefined) ? 1 : toInteger(n); - n = length - n; - return baseSlice(array, n < 0 ? 0 : n, length); - } - - /** - * Creates a slice of `array` with elements taken from the end. Elements are - * taken until `predicate` returns falsey. The predicate is invoked with - * three arguments: (value, index, array). - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Array - * @param {Array} array The array to query. - * @param {Function} [predicate=_.identity] - * The function invoked per iteration. - * @returns {Array} Returns the slice of `array`. - * @example - * - * var users = [ - * { 'user': 'barney', 'active': true }, - * { 'user': 'fred', 'active': false }, - * { 'user': 'pebbles', 'active': false } - * ]; - * - * _.takeRightWhile(users, function(o) { return !o.active; }); - * // => objects for ['fred', 'pebbles'] - * - * // The `_.matches` iteratee shorthand. - * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false }); - * // => objects for ['pebbles'] - * - * // The `_.matchesProperty` iteratee shorthand. - * _.takeRightWhile(users, ['active', false]); - * // => objects for ['fred', 'pebbles'] - * - * // The `_.property` iteratee shorthand. - * _.takeRightWhile(users, 'active'); - * // => [] - */ - function takeRightWhile(array, predicate) { - return (array && array.length) - ? baseWhile(array, getIteratee(predicate, 3), false, true) - : []; - } - - /** - * Creates a slice of `array` with elements taken from the beginning. Elements - * are taken until `predicate` returns falsey. The predicate is invoked with - * three arguments: (value, index, array). - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Array - * @param {Array} array The array to query. - * @param {Function} [predicate=_.identity] - * The function invoked per iteration. - * @returns {Array} Returns the slice of `array`. - * @example - * - * var users = [ - * { 'user': 'barney', 'active': false }, - * { 'user': 'fred', 'active': false}, - * { 'user': 'pebbles', 'active': true } - * ]; - * - * _.takeWhile(users, function(o) { return !o.active; }); - * // => objects for ['barney', 'fred'] - * - * // The `_.matches` iteratee shorthand. - * _.takeWhile(users, { 'user': 'barney', 'active': false }); - * // => objects for ['barney'] - * - * // The `_.matchesProperty` iteratee shorthand. - * _.takeWhile(users, ['active', false]); - * // => objects for ['barney', 'fred'] - * - * // The `_.property` iteratee shorthand. - * _.takeWhile(users, 'active'); - * // => [] - */ - function takeWhile(array, predicate) { - return (array && array.length) - ? baseWhile(array, getIteratee(predicate, 3)) - : []; - } - - /** - * Creates an array of unique values, in order, from all given arrays using - * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero) - * for equality comparisons. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Array - * @param {...Array} [arrays] The arrays to inspect. - * @returns {Array} Returns the new array of combined values. - * @example - * - * _.union([2], [1, 2]); - * // => [2, 1] - */ - var union = baseRest(function(arrays) { - return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true)); - }); - - /** - * This method is like `_.union` except that it accepts `iteratee` which is - * invoked for each element of each `arrays` to generate the criterion by - * which uniqueness is computed. Result values are chosen from the first - * array in which the value occurs. The iteratee is invoked with one argument: - * (value). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {...Array} [arrays] The arrays to inspect. - * @param {Function} [iteratee=_.identity] - * The iteratee invoked per element. - * @returns {Array} Returns the new array of combined values. - * @example - * - * _.unionBy([2.1], [1.2, 2.3], Math.floor); - * // => [2.1, 1.2] - * - * // The `_.property` iteratee shorthand. - * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); - * // => [{ 'x': 1 }, { 'x': 2 }] - */ - var unionBy = baseRest(function(arrays) { - var iteratee = last(arrays); - if (isArrayLikeObject(iteratee)) { - iteratee = undefined; - } - return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2)); - }); - - /** - * This method is like `_.union` except that it accepts `comparator` which - * is invoked to compare elements of `arrays`. Result values are chosen from - * the first array in which the value occurs. The comparator is invoked - * with two arguments: (arrVal, othVal). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {...Array} [arrays] The arrays to inspect. - * @param {Function} [comparator] The comparator invoked per element. - * @returns {Array} Returns the new array of combined values. - * @example - * - * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; - * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; - * - * _.unionWith(objects, others, _.isEqual); - * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }] - */ - var unionWith = baseRest(function(arrays) { - var comparator = last(arrays); - if (isArrayLikeObject(comparator)) { - comparator = undefined; - } - return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator); - }); - - /** - * Creates a duplicate-free version of an array, using - * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero) - * for equality comparisons, in which only the first occurrence of each - * element is kept. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Array - * @param {Array} array The array to inspect. - * @returns {Array} Returns the new duplicate free array. - * @example - * - * _.uniq([2, 1, 2]); - * // => [2, 1] - */ - function uniq(array) { - return (array && array.length) - ? baseUniq(array) - : []; - } - - /** - * This method is like `_.uniq` except that it accepts `iteratee` which is - * invoked for each element in `array` to generate the criterion by which - * uniqueness is computed. The iteratee is invoked with one argument: (value). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} array The array to inspect. - * @param {Function} [iteratee=_.identity] - * The iteratee invoked per element. - * @returns {Array} Returns the new duplicate free array. - * @example - * - * _.uniqBy([2.1, 1.2, 2.3], Math.floor); - * // => [2.1, 1.2] - * - * // The `_.property` iteratee shorthand. - * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x'); - * // => [{ 'x': 1 }, { 'x': 2 }] - */ - function uniqBy(array, iteratee) { - return (array && array.length) - ? baseUniq(array, getIteratee(iteratee, 2)) - : []; - } - - /** - * This method is like `_.uniq` except that it accepts `comparator` which - * is invoked to compare elements of `array`. The comparator is invoked with - * two arguments: (arrVal, othVal). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {Array} array The array to inspect. - * @param {Function} [comparator] The comparator invoked per element. - * @returns {Array} Returns the new duplicate free array. - * @example - * - * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }]; - * - * _.uniqWith(objects, _.isEqual); - * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }] - */ - function uniqWith(array, comparator) { - return (array && array.length) - ? baseUniq(array, undefined, comparator) - : []; - } - - /** - * This method is like `_.zip` except that it accepts an array of grouped - * elements and creates an array regrouping the elements to their pre-zip - * configuration. - * - * @static - * @memberOf _ - * @since 1.2.0 - * @category Array - * @param {Array} array The array of grouped elements to process. - * @returns {Array} Returns the new array of regrouped elements. - * @example - * - * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]); - * // => [['a', 1, true], ['b', 2, false]] - * - * _.unzip(zipped); - * // => [['a', 'b'], [1, 2], [true, false]] - */ - function unzip(array) { - if (!(array && array.length)) { - return []; - } - var length = 0; - array = arrayFilter(array, function(group) { - if (isArrayLikeObject(group)) { - length = nativeMax(group.length, length); - return true; - } - }); - return baseTimes(length, function(index) { - return arrayMap(array, baseProperty(index)); - }); - } - - /** - * This method is like `_.unzip` except that it accepts `iteratee` to specify - * how regrouped values should be combined. The iteratee is invoked with the - * elements of each group: (...group). - * - * @static - * @memberOf _ - * @since 3.8.0 - * @category Array - * @param {Array} array The array of grouped elements to process. - * @param {Function} [iteratee=_.identity] The function to combine - * regrouped values. - * @returns {Array} Returns the new array of regrouped elements. - * @example - * - * var zipped = _.zip([1, 2], [10, 20], [100, 200]); - * // => [[1, 10, 100], [2, 20, 200]] - * - * _.unzipWith(zipped, _.add); - * // => [3, 30, 300] - */ - function unzipWith(array, iteratee) { - if (!(array && array.length)) { - return []; - } - var result = unzip(array); - if (iteratee == null) { - return result; - } - return arrayMap(result, function(group) { - return apply(iteratee, undefined, group); - }); - } - - /** - * Creates an array excluding all given values using - * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero) - * for equality comparisons. - * - * **Note:** Unlike `_.pull`, this method returns a new array. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Array - * @param {Array} array The array to inspect. - * @param {...*} [values] The values to exclude. - * @returns {Array} Returns the new array of filtered values. - * @see _.difference, _.xor - * @example - * - * _.without([2, 1, 2, 3], 1, 2); - * // => [3] - */ - var without = baseRest(function(array, values) { - return isArrayLikeObject(array) - ? baseDifference(array, values) - : []; - }); - - /** - * Creates an array of unique values that is the - * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference) - * of the given arrays. The order of result values is determined by the order - * they occur in the arrays. - * - * @static - * @memberOf _ - * @since 2.4.0 - * @category Array - * @param {...Array} [arrays] The arrays to inspect. - * @returns {Array} Returns the new array of filtered values. - * @see _.difference, _.without - * @example - * - * _.xor([2, 1], [2, 3]); - * // => [1, 3] - */ - var xor = baseRest(function(arrays) { - return baseXor(arrayFilter(arrays, isArrayLikeObject)); - }); - - /** - * This method is like `_.xor` except that it accepts `iteratee` which is - * invoked for each element of each `arrays` to generate the criterion by - * which by which they're compared. The iteratee is invoked with one argument: - * (value). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {...Array} [arrays] The arrays to inspect. - * @param {Function} [iteratee=_.identity] - * The iteratee invoked per element. - * @returns {Array} Returns the new array of filtered values. - * @example - * - * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor); - * // => [1.2, 3.4] - * - * // The `_.property` iteratee shorthand. - * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); - * // => [{ 'x': 2 }] - */ - var xorBy = baseRest(function(arrays) { - var iteratee = last(arrays); - if (isArrayLikeObject(iteratee)) { - iteratee = undefined; - } - return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2)); - }); - - /** - * This method is like `_.xor` except that it accepts `comparator` which is - * invoked to compare elements of `arrays`. The comparator is invoked with - * two arguments: (arrVal, othVal). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Array - * @param {...Array} [arrays] The arrays to inspect. - * @param {Function} [comparator] The comparator invoked per element. - * @returns {Array} Returns the new array of filtered values. - * @example - * - * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; - * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; - * - * _.xorWith(objects, others, _.isEqual); - * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }] - */ - var xorWith = baseRest(function(arrays) { - var comparator = last(arrays); - if (isArrayLikeObject(comparator)) { - comparator = undefined; - } - return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator); - }); - - /** - * Creates an array of grouped elements, the first of which contains the - * first elements of the given arrays, the second of which contains the - * second elements of the given arrays, and so on. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Array - * @param {...Array} [arrays] The arrays to process. - * @returns {Array} Returns the new array of grouped elements. - * @example - * - * _.zip(['a', 'b'], [1, 2], [true, false]); - * // => [['a', 1, true], ['b', 2, false]] - */ - var zip = baseRest(unzip); - - /** - * This method is like `_.fromPairs` except that it accepts two arrays, - * one of property identifiers and one of corresponding values. - * - * @static - * @memberOf _ - * @since 0.4.0 - * @category Array - * @param {Array} [props=[]] The property identifiers. - * @param {Array} [values=[]] The property values. - * @returns {Object} Returns the new object. - * @example - * - * _.zipObject(['a', 'b'], [1, 2]); - * // => { 'a': 1, 'b': 2 } - */ - function zipObject(props, values) { - return baseZipObject(props || [], values || [], assignValue); - } - - /** - * This method is like `_.zipObject` except that it supports property paths. - * - * @static - * @memberOf _ - * @since 4.1.0 - * @category Array - * @param {Array} [props=[]] The property identifiers. - * @param {Array} [values=[]] The property values. - * @returns {Object} Returns the new object. - * @example - * - * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]); - * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } } - */ - function zipObjectDeep(props, values) { - return baseZipObject(props || [], values || [], baseSet); - } - - /** - * This method is like `_.zip` except that it accepts `iteratee` to specify - * how grouped values should be combined. The iteratee is invoked with the - * elements of each group: (...group). - * - * @static - * @memberOf _ - * @since 3.8.0 - * @category Array - * @param {...Array} [arrays] The arrays to process. - * @param {Function} [iteratee=_.identity] The function to combine grouped values. - * @returns {Array} Returns the new array of grouped elements. - * @example - * - * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) { - * return a + b + c; - * }); - * // => [111, 222] - */ - var zipWith = baseRest(function(arrays) { - var length = arrays.length, - iteratee = length > 1 ? arrays[length - 1] : undefined; - - iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined; - return unzipWith(arrays, iteratee); - }); - - /*------------------------------------------------------------------------*/ - - /** - * Creates a `lodash` wrapper instance that wraps `value` with explicit method - * chain sequences enabled. The result of such sequences must be unwrapped - * with `_#value`. - * - * @static - * @memberOf _ - * @since 1.3.0 - * @category Seq - * @param {*} value The value to wrap. - * @returns {Object} Returns the new `lodash` wrapper instance. - * @example - * - * var users = [ - * { 'user': 'barney', 'age': 36 }, - * { 'user': 'fred', 'age': 40 }, - * { 'user': 'pebbles', 'age': 1 } - * ]; - * - * var youngest = _ - * .chain(users) - * .sortBy('age') - * .map(function(o) { - * return o.user + ' is ' + o.age; - * }) - * .head() - * .value(); - * // => 'pebbles is 1' - */ - function chain(value) { - var result = lodash(value); - result.__chain__ = true; - return result; - } - - /** - * This method invokes `interceptor` and returns `value`. The interceptor - * is invoked with one argument; (value). The purpose of this method is to - * "tap into" a method chain sequence in order to modify intermediate results. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Seq - * @param {*} value The value to provide to `interceptor`. - * @param {Function} interceptor The function to invoke. - * @returns {*} Returns `value`. - * @example - * - * _([1, 2, 3]) - * .tap(function(array) { - * // Mutate input array. - * array.pop(); - * }) - * .reverse() - * .value(); - * // => [2, 1] - */ - function tap(value, interceptor) { - interceptor(value); - return value; - } - - /** - * This method is like `_.tap` except that it returns the result of `interceptor`. - * The purpose of this method is to "pass thru" values replacing intermediate - * results in a method chain sequence. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Seq - * @param {*} value The value to provide to `interceptor`. - * @param {Function} interceptor The function to invoke. - * @returns {*} Returns the result of `interceptor`. - * @example - * - * _(' abc ') - * .chain() - * .trim() - * .thru(function(value) { - * return [value]; - * }) - * .value(); - * // => ['abc'] - */ - function thru(value, interceptor) { - return interceptor(value); - } - - /** - * This method is the wrapper version of `_.at`. - * - * @name at - * @memberOf _ - * @since 1.0.0 - * @category Seq - * @param {...(string|string[])} [paths] The property paths of elements to pick. - * @returns {Object} Returns the new `lodash` wrapper instance. - * @example - * - * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] }; - * - * _(object).at(['a[0].b.c', 'a[1]']).value(); - * // => [3, 4] - */ - var wrapperAt = baseRest(function(paths) { - paths = baseFlatten(paths, 1); - var length = paths.length, - start = length ? paths[0] : 0, - value = this.__wrapped__, - interceptor = function(object) { return baseAt(object, paths); }; - - if (length > 1 || this.__actions__.length || - !(value instanceof LazyWrapper) || !isIndex(start)) { - return this.thru(interceptor); - } - value = value.slice(start, +start + (length ? 1 : 0)); - value.__actions__.push({ - 'func': thru, - 'args': [interceptor], - 'thisArg': undefined - }); - return new LodashWrapper(value, this.__chain__).thru(function(array) { - if (length && !array.length) { - array.push(undefined); - } - return array; - }); - }); - - /** - * Creates a `lodash` wrapper instance with explicit method chain sequences enabled. - * - * @name chain - * @memberOf _ - * @since 0.1.0 - * @category Seq - * @returns {Object} Returns the new `lodash` wrapper instance. - * @example - * - * var users = [ - * { 'user': 'barney', 'age': 36 }, - * { 'user': 'fred', 'age': 40 } - * ]; - * - * // A sequence without explicit chaining. - * _(users).head(); - * // => { 'user': 'barney', 'age': 36 } - * - * // A sequence with explicit chaining. - * _(users) - * .chain() - * .head() - * .pick('user') - * .value(); - * // => { 'user': 'barney' } - */ - function wrapperChain() { - return chain(this); - } - - /** - * Executes the chain sequence and returns the wrapped result. - * - * @name commit - * @memberOf _ - * @since 3.2.0 - * @category Seq - * @returns {Object} Returns the new `lodash` wrapper instance. - * @example - * - * var array = [1, 2]; - * var wrapped = _(array).push(3); - * - * console.log(array); - * // => [1, 2] - * - * wrapped = wrapped.commit(); - * console.log(array); - * // => [1, 2, 3] - * - * wrapped.last(); - * // => 3 - * - * console.log(array); - * // => [1, 2, 3] - */ - function wrapperCommit() { - return new LodashWrapper(this.value(), this.__chain__); - } - - /** - * Gets the next value on a wrapped object following the - * [iterator protocol](https://mdn.io/iteration_protocols#iterator). - * - * @name next - * @memberOf _ - * @since 4.0.0 - * @category Seq - * @returns {Object} Returns the next iterator value. - * @example - * - * var wrapped = _([1, 2]); - * - * wrapped.next(); - * // => { 'done': false, 'value': 1 } - * - * wrapped.next(); - * // => { 'done': false, 'value': 2 } - * - * wrapped.next(); - * // => { 'done': true, 'value': undefined } - */ - function wrapperNext() { - if (this.__values__ === undefined) { - this.__values__ = toArray(this.value()); - } - var done = this.__index__ >= this.__values__.length, - value = done ? undefined : this.__values__[this.__index__++]; - - return { 'done': done, 'value': value }; - } - - /** - * Enables the wrapper to be iterable. - * - * @name Symbol.iterator - * @memberOf _ - * @since 4.0.0 - * @category Seq - * @returns {Object} Returns the wrapper object. - * @example - * - * var wrapped = _([1, 2]); - * - * wrapped[Symbol.iterator]() === wrapped; - * // => true - * - * Array.from(wrapped); - * // => [1, 2] - */ - function wrapperToIterator() { - return this; - } - - /** - * Creates a clone of the chain sequence planting `value` as the wrapped value. - * - * @name plant - * @memberOf _ - * @since 3.2.0 - * @category Seq - * @param {*} value The value to plant. - * @returns {Object} Returns the new `lodash` wrapper instance. - * @example - * - * function square(n) { - * return n * n; - * } - * - * var wrapped = _([1, 2]).map(square); - * var other = wrapped.plant([3, 4]); - * - * other.value(); - * // => [9, 16] - * - * wrapped.value(); - * // => [1, 4] - */ - function wrapperPlant(value) { - var result, - parent = this; - - while (parent instanceof baseLodash) { - var clone = wrapperClone(parent); - clone.__index__ = 0; - clone.__values__ = undefined; - if (result) { - previous.__wrapped__ = clone; - } else { - result = clone; - } - var previous = clone; - parent = parent.__wrapped__; - } - previous.__wrapped__ = value; - return result; - } - - /** - * This method is the wrapper version of `_.reverse`. - * - * **Note:** This method mutates the wrapped array. - * - * @name reverse - * @memberOf _ - * @since 0.1.0 - * @category Seq - * @returns {Object} Returns the new `lodash` wrapper instance. - * @example - * - * var array = [1, 2, 3]; - * - * _(array).reverse().value() - * // => [3, 2, 1] - * - * console.log(array); - * // => [3, 2, 1] - */ - function wrapperReverse() { - var value = this.__wrapped__; - if (value instanceof LazyWrapper) { - var wrapped = value; - if (this.__actions__.length) { - wrapped = new LazyWrapper(this); - } - wrapped = wrapped.reverse(); - wrapped.__actions__.push({ - 'func': thru, - 'args': [reverse], - 'thisArg': undefined - }); - return new LodashWrapper(wrapped, this.__chain__); - } - return this.thru(reverse); - } - - /** - * Executes the chain sequence to resolve the unwrapped value. - * - * @name value - * @memberOf _ - * @since 0.1.0 - * @alias toJSON, valueOf - * @category Seq - * @returns {*} Returns the resolved unwrapped value. - * @example - * - * _([1, 2, 3]).value(); - * // => [1, 2, 3] - */ - function wrapperValue() { - return baseWrapperValue(this.__wrapped__, this.__actions__); - } - - /*------------------------------------------------------------------------*/ - - /** - * Creates an object composed of keys generated from the results of running - * each element of `collection` thru `iteratee`. The corresponding value of - * each key is the number of times the key was returned by `iteratee`. The - * iteratee is invoked with one argument: (value). - * - * @static - * @memberOf _ - * @since 0.5.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} [iteratee=_.identity] - * The iteratee to transform keys. - * @returns {Object} Returns the composed aggregate object. - * @example - * - * _.countBy([6.1, 4.2, 6.3], Math.floor); - * // => { '4': 1, '6': 2 } - * - * // The `_.property` iteratee shorthand. - * _.countBy(['one', 'two', 'three'], 'length'); - * // => { '3': 2, '5': 1 } - */ - var countBy = createAggregator(function(result, value, key) { - hasOwnProperty.call(result, key) ? ++result[key] : (result[key] = 1); - }); - - /** - * Checks if `predicate` returns truthy for **all** elements of `collection`. - * Iteration is stopped once `predicate` returns falsey. The predicate is - * invoked with three arguments: (value, index|key, collection). - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} [predicate=_.identity] - * The function invoked per iteration. - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. - * @returns {boolean} Returns `true` if all elements pass the predicate check, - * else `false`. - * @example - * - * _.every([true, 1, null, 'yes'], Boolean); - * // => false - * - * var users = [ - * { 'user': 'barney', 'age': 36, 'active': false }, - * { 'user': 'fred', 'age': 40, 'active': false } - * ]; - * - * // The `_.matches` iteratee shorthand. - * _.every(users, { 'user': 'barney', 'active': false }); - * // => false - * - * // The `_.matchesProperty` iteratee shorthand. - * _.every(users, ['active', false]); - * // => true - * - * // The `_.property` iteratee shorthand. - * _.every(users, 'active'); - * // => false - */ - function every(collection, predicate, guard) { - var func = isArray(collection) ? arrayEvery : baseEvery; - if (guard && isIterateeCall(collection, predicate, guard)) { - predicate = undefined; - } - return func(collection, getIteratee(predicate, 3)); - } - - /** - * Iterates over elements of `collection`, returning an array of all elements - * `predicate` returns truthy for. The predicate is invoked with three - * arguments: (value, index|key, collection). - * - * **Note:** Unlike `_.remove`, this method returns a new array. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} [predicate=_.identity] - * The function invoked per iteration. - * @returns {Array} Returns the new filtered array. - * @see _.reject - * @example - * - * var users = [ - * { 'user': 'barney', 'age': 36, 'active': true }, - * { 'user': 'fred', 'age': 40, 'active': false } - * ]; - * - * _.filter(users, function(o) { return !o.active; }); - * // => objects for ['fred'] - * - * // The `_.matches` iteratee shorthand. - * _.filter(users, { 'age': 36, 'active': true }); - * // => objects for ['barney'] - * - * // The `_.matchesProperty` iteratee shorthand. - * _.filter(users, ['active', false]); - * // => objects for ['fred'] - * - * // The `_.property` iteratee shorthand. - * _.filter(users, 'active'); - * // => objects for ['barney'] - */ - function filter(collection, predicate) { - var func = isArray(collection) ? arrayFilter : baseFilter; - return func(collection, getIteratee(predicate, 3)); - } - - /** - * Iterates over elements of `collection`, returning the first element - * `predicate` returns truthy for. The predicate is invoked with three - * arguments: (value, index|key, collection). - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Collection - * @param {Array|Object} collection The collection to search. - * @param {Function} [predicate=_.identity] - * The function invoked per iteration. - * @param {number} [fromIndex=0] The index to search from. - * @returns {*} Returns the matched element, else `undefined`. - * @example - * - * var users = [ - * { 'user': 'barney', 'age': 36, 'active': true }, - * { 'user': 'fred', 'age': 40, 'active': false }, - * { 'user': 'pebbles', 'age': 1, 'active': true } - * ]; - * - * _.find(users, function(o) { return o.age < 40; }); - * // => object for 'barney' - * - * // The `_.matches` iteratee shorthand. - * _.find(users, { 'age': 1, 'active': true }); - * // => object for 'pebbles' - * - * // The `_.matchesProperty` iteratee shorthand. - * _.find(users, ['active', false]); - * // => object for 'fred' - * - * // The `_.property` iteratee shorthand. - * _.find(users, 'active'); - * // => object for 'barney' - */ - var find = createFind(findIndex); - - /** - * This method is like `_.find` except that it iterates over elements of - * `collection` from right to left. - * - * @static - * @memberOf _ - * @since 2.0.0 - * @category Collection - * @param {Array|Object} collection The collection to search. - * @param {Function} [predicate=_.identity] - * The function invoked per iteration. - * @param {number} [fromIndex=collection.length-1] The index to search from. - * @returns {*} Returns the matched element, else `undefined`. - * @example - * - * _.findLast([1, 2, 3, 4], function(n) { - * return n % 2 == 1; - * }); - * // => 3 - */ - var findLast = createFind(findLastIndex); - - /** - * Creates a flattened array of values by running each element in `collection` - * thru `iteratee` and flattening the mapped results. The iteratee is invoked - * with three arguments: (value, index|key, collection). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} [iteratee=_.identity] - * The function invoked per iteration. - * @returns {Array} Returns the new flattened array. - * @example - * - * function duplicate(n) { - * return [n, n]; - * } - * - * _.flatMap([1, 2], duplicate); - * // => [1, 1, 2, 2] - */ - function flatMap(collection, iteratee) { - return baseFlatten(map(collection, iteratee), 1); - } - - /** - * This method is like `_.flatMap` except that it recursively flattens the - * mapped results. - * - * @static - * @memberOf _ - * @since 4.7.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} [iteratee=_.identity] - * The function invoked per iteration. - * @returns {Array} Returns the new flattened array. - * @example - * - * function duplicate(n) { - * return [[[n, n]]]; - * } - * - * _.flatMapDeep([1, 2], duplicate); - * // => [1, 1, 2, 2] - */ - function flatMapDeep(collection, iteratee) { - return baseFlatten(map(collection, iteratee), INFINITY); - } - - /** - * This method is like `_.flatMap` except that it recursively flattens the - * mapped results up to `depth` times. - * - * @static - * @memberOf _ - * @since 4.7.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} [iteratee=_.identity] - * The function invoked per iteration. - * @param {number} [depth=1] The maximum recursion depth. - * @returns {Array} Returns the new flattened array. - * @example - * - * function duplicate(n) { - * return [[[n, n]]]; - * } - * - * _.flatMapDepth([1, 2], duplicate, 2); - * // => [[1, 1], [2, 2]] - */ - function flatMapDepth(collection, iteratee, depth) { - depth = depth === undefined ? 1 : toInteger(depth); - return baseFlatten(map(collection, iteratee), depth); - } - - /** - * Iterates over elements of `collection` and invokes `iteratee` for each element. - * The iteratee is invoked with three arguments: (value, index|key, collection). - * Iteratee functions may exit iteration early by explicitly returning `false`. - * - * **Note:** As with other "Collections" methods, objects with a "length" - * property are iterated like arrays. To avoid this behavior use `_.forIn` - * or `_.forOwn` for object iteration. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @alias each - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} [iteratee=_.identity] The function invoked per iteration. - * @returns {Array|Object} Returns `collection`. - * @see _.forEachRight - * @example - * - * _([1, 2]).forEach(function(value) { - * console.log(value); - * }); - * // => Logs `1` then `2`. - * - * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) { - * console.log(key); - * }); - * // => Logs 'a' then 'b' (iteration order is not guaranteed). - */ - function forEach(collection, iteratee) { - var func = isArray(collection) ? arrayEach : baseEach; - return func(collection, getIteratee(iteratee, 3)); - } - - /** - * This method is like `_.forEach` except that it iterates over elements of - * `collection` from right to left. - * - * @static - * @memberOf _ - * @since 2.0.0 - * @alias eachRight - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} [iteratee=_.identity] The function invoked per iteration. - * @returns {Array|Object} Returns `collection`. - * @see _.forEach - * @example - * - * _.forEachRight([1, 2], function(value) { - * console.log(value); - * }); - * // => Logs `2` then `1`. - */ - function forEachRight(collection, iteratee) { - var func = isArray(collection) ? arrayEachRight : baseEachRight; - return func(collection, getIteratee(iteratee, 3)); - } - - /** - * Creates an object composed of keys generated from the results of running - * each element of `collection` thru `iteratee`. The order of grouped values - * is determined by the order they occur in `collection`. The corresponding - * value of each key is an array of elements responsible for generating the - * key. The iteratee is invoked with one argument: (value). - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} [iteratee=_.identity] - * The iteratee to transform keys. - * @returns {Object} Returns the composed aggregate object. - * @example - * - * _.groupBy([6.1, 4.2, 6.3], Math.floor); - * // => { '4': [4.2], '6': [6.1, 6.3] } - * - * // The `_.property` iteratee shorthand. - * _.groupBy(['one', 'two', 'three'], 'length'); - * // => { '3': ['one', 'two'], '5': ['three'] } - */ - var groupBy = createAggregator(function(result, value, key) { - if (hasOwnProperty.call(result, key)) { - result[key].push(value); - } else { - result[key] = [value]; - } - }); - - /** - * Checks if `value` is in `collection`. If `collection` is a string, it's - * checked for a substring of `value`, otherwise - * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero) - * is used for equality comparisons. If `fromIndex` is negative, it's used as - * the offset from the end of `collection`. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Collection - * @param {Array|Object|string} collection The collection to search. - * @param {*} value The value to search for. - * @param {number} [fromIndex=0] The index to search from. - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`. - * @returns {boolean} Returns `true` if `value` is found, else `false`. - * @example - * - * _.includes([1, 2, 3], 1); - * // => true - * - * _.includes([1, 2, 3], 1, 2); - * // => false - * - * _.includes({ 'a': 1, 'b': 2 }, 1); - * // => true - * - * _.includes('abcd', 'bc'); - * // => true - */ - function includes(collection, value, fromIndex, guard) { - collection = isArrayLike(collection) ? collection : values(collection); - fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0; - - var length = collection.length; - if (fromIndex < 0) { - fromIndex = nativeMax(length + fromIndex, 0); - } - return isString(collection) - ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1) - : (!!length && baseIndexOf(collection, value, fromIndex) > -1); - } - - /** - * Invokes the method at `path` of each element in `collection`, returning - * an array of the results of each invoked method. Any additional arguments - * are provided to each invoked method. If `path` is a function, it's invoked - * for, and `this` bound to, each element in `collection`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Array|Function|string} path The path of the method to invoke or - * the function invoked per iteration. - * @param {...*} [args] The arguments to invoke each method with. - * @returns {Array} Returns the array of results. - * @example - * - * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort'); - * // => [[1, 5, 7], [1, 2, 3]] - * - * _.invokeMap([123, 456], String.prototype.split, ''); - * // => [['1', '2', '3'], ['4', '5', '6']] - */ - var invokeMap = baseRest(function(collection, path, args) { - var index = -1, - isFunc = typeof path == 'function', - isProp = isKey(path), - result = isArrayLike(collection) ? Array(collection.length) : []; - - baseEach(collection, function(value) { - var func = isFunc ? path : ((isProp && value != null) ? value[path] : undefined); - result[++index] = func ? apply(func, value, args) : baseInvoke(value, path, args); - }); - return result; - }); - - /** - * Creates an object composed of keys generated from the results of running - * each element of `collection` thru `iteratee`. The corresponding value of - * each key is the last element responsible for generating the key. The - * iteratee is invoked with one argument: (value). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} [iteratee=_.identity] - * The iteratee to transform keys. - * @returns {Object} Returns the composed aggregate object. - * @example - * - * var array = [ - * { 'dir': 'left', 'code': 97 }, - * { 'dir': 'right', 'code': 100 } - * ]; - * - * _.keyBy(array, function(o) { - * return String.fromCharCode(o.code); - * }); - * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } } - * - * _.keyBy(array, 'dir'); - * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } } - */ - var keyBy = createAggregator(function(result, value, key) { - result[key] = value; - }); - - /** - * Creates an array of values by running each element in `collection` thru - * `iteratee`. The iteratee is invoked with three arguments: - * (value, index|key, collection). - * - * Many lodash methods are guarded to work as iteratees for methods like - * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`. - * - * The guarded methods are: - * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`, - * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`, - * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`, - * `template`, `trim`, `trimEnd`, `trimStart`, and `words` - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} [iteratee=_.identity] The function invoked per iteration. - * @returns {Array} Returns the new mapped array. - * @example - * - * function square(n) { - * return n * n; - * } - * - * _.map([4, 8], square); - * // => [16, 64] - * - * _.map({ 'a': 4, 'b': 8 }, square); - * // => [16, 64] (iteration order is not guaranteed) - * - * var users = [ - * { 'user': 'barney' }, - * { 'user': 'fred' } - * ]; - * - * // The `_.property` iteratee shorthand. - * _.map(users, 'user'); - * // => ['barney', 'fred'] - */ - function map(collection, iteratee) { - var func = isArray(collection) ? arrayMap : baseMap; - return func(collection, getIteratee(iteratee, 3)); - } - - /** - * This method is like `_.sortBy` except that it allows specifying the sort - * orders of the iteratees to sort by. If `orders` is unspecified, all values - * are sorted in ascending order. Otherwise, specify an order of "desc" for - * descending or "asc" for ascending sort order of corresponding values. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]] - * The iteratees to sort by. - * @param {string[]} [orders] The sort orders of `iteratees`. - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`. - * @returns {Array} Returns the new sorted array. - * @example - * - * var users = [ - * { 'user': 'fred', 'age': 48 }, - * { 'user': 'barney', 'age': 34 }, - * { 'user': 'fred', 'age': 40 }, - * { 'user': 'barney', 'age': 36 } - * ]; - * - * // Sort by `user` in ascending order and by `age` in descending order. - * _.orderBy(users, ['user', 'age'], ['asc', 'desc']); - * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]] - */ - function orderBy(collection, iteratees, orders, guard) { - if (collection == null) { - return []; - } - if (!isArray(iteratees)) { - iteratees = iteratees == null ? [] : [iteratees]; - } - orders = guard ? undefined : orders; - if (!isArray(orders)) { - orders = orders == null ? [] : [orders]; - } - return baseOrderBy(collection, iteratees, orders); - } - - /** - * Creates an array of elements split into two groups, the first of which - * contains elements `predicate` returns truthy for, the second of which - * contains elements `predicate` returns falsey for. The predicate is - * invoked with one argument: (value). - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} [predicate=_.identity] The function invoked per iteration. - * @returns {Array} Returns the array of grouped elements. - * @example - * - * var users = [ - * { 'user': 'barney', 'age': 36, 'active': false }, - * { 'user': 'fred', 'age': 40, 'active': true }, - * { 'user': 'pebbles', 'age': 1, 'active': false } - * ]; - * - * _.partition(users, function(o) { return o.active; }); - * // => objects for [['fred'], ['barney', 'pebbles']] - * - * // The `_.matches` iteratee shorthand. - * _.partition(users, { 'age': 1, 'active': false }); - * // => objects for [['pebbles'], ['barney', 'fred']] - * - * // The `_.matchesProperty` iteratee shorthand. - * _.partition(users, ['active', false]); - * // => objects for [['barney', 'pebbles'], ['fred']] - * - * // The `_.property` iteratee shorthand. - * _.partition(users, 'active'); - * // => objects for [['fred'], ['barney', 'pebbles']] - */ - var partition = createAggregator(function(result, value, key) { - result[key ? 0 : 1].push(value); - }, function() { return [[], []]; }); - - /** - * Reduces `collection` to a value which is the accumulated result of running - * each element in `collection` thru `iteratee`, where each successive - * invocation is supplied the return value of the previous. If `accumulator` - * is not given, the first element of `collection` is used as the initial - * value. The iteratee is invoked with four arguments: - * (accumulator, value, index|key, collection). - * - * Many lodash methods are guarded to work as iteratees for methods like - * `_.reduce`, `_.reduceRight`, and `_.transform`. - * - * The guarded methods are: - * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`, - * and `sortBy` - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} [iteratee=_.identity] The function invoked per iteration. - * @param {*} [accumulator] The initial value. - * @returns {*} Returns the accumulated value. - * @see _.reduceRight - * @example - * - * _.reduce([1, 2], function(sum, n) { - * return sum + n; - * }, 0); - * // => 3 - * - * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) { - * (result[value] || (result[value] = [])).push(key); - * return result; - * }, {}); - * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed) - */ - function reduce(collection, iteratee, accumulator) { - var func = isArray(collection) ? arrayReduce : baseReduce, - initAccum = arguments.length < 3; - - return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach); - } - - /** - * This method is like `_.reduce` except that it iterates over elements of - * `collection` from right to left. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} [iteratee=_.identity] The function invoked per iteration. - * @param {*} [accumulator] The initial value. - * @returns {*} Returns the accumulated value. - * @see _.reduce - * @example - * - * var array = [[0, 1], [2, 3], [4, 5]]; - * - * _.reduceRight(array, function(flattened, other) { - * return flattened.concat(other); - * }, []); - * // => [4, 5, 2, 3, 0, 1] - */ - function reduceRight(collection, iteratee, accumulator) { - var func = isArray(collection) ? arrayReduceRight : baseReduce, - initAccum = arguments.length < 3; - - return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight); - } - - /** - * The opposite of `_.filter`; this method returns the elements of `collection` - * that `predicate` does **not** return truthy for. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} [predicate=_.identity] The function invoked per iteration. - * @returns {Array} Returns the new filtered array. - * @see _.filter - * @example - * - * var users = [ - * { 'user': 'barney', 'age': 36, 'active': false }, - * { 'user': 'fred', 'age': 40, 'active': true } - * ]; - * - * _.reject(users, function(o) { return !o.active; }); - * // => objects for ['fred'] - * - * // The `_.matches` iteratee shorthand. - * _.reject(users, { 'age': 40, 'active': true }); - * // => objects for ['barney'] - * - * // The `_.matchesProperty` iteratee shorthand. - * _.reject(users, ['active', false]); - * // => objects for ['fred'] - * - * // The `_.property` iteratee shorthand. - * _.reject(users, 'active'); - * // => objects for ['barney'] - */ - function reject(collection, predicate) { - var func = isArray(collection) ? arrayFilter : baseFilter; - return func(collection, negate(getIteratee(predicate, 3))); - } - - /** - * Gets a random element from `collection`. - * - * @static - * @memberOf _ - * @since 2.0.0 - * @category Collection - * @param {Array|Object} collection The collection to sample. - * @returns {*} Returns the random element. - * @example - * - * _.sample([1, 2, 3, 4]); - * // => 2 - */ - function sample(collection) { - var array = isArrayLike(collection) ? collection : values(collection), - length = array.length; - - return length > 0 ? array[baseRandom(0, length - 1)] : undefined; - } - - /** - * Gets `n` random elements at unique keys from `collection` up to the - * size of `collection`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Collection - * @param {Array|Object} collection The collection to sample. - * @param {number} [n=1] The number of elements to sample. - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. - * @returns {Array} Returns the random elements. - * @example - * - * _.sampleSize([1, 2, 3], 2); - * // => [3, 1] - * - * _.sampleSize([1, 2, 3], 4); - * // => [2, 3, 1] - */ - function sampleSize(collection, n, guard) { - var index = -1, - result = toArray(collection), - length = result.length, - lastIndex = length - 1; - - if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) { - n = 1; - } else { - n = baseClamp(toInteger(n), 0, length); - } - while (++index < n) { - var rand = baseRandom(index, lastIndex), - value = result[rand]; - - result[rand] = result[index]; - result[index] = value; - } - result.length = n; - return result; - } - - /** - * Creates an array of shuffled values, using a version of the - * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle). - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Collection - * @param {Array|Object} collection The collection to shuffle. - * @returns {Array} Returns the new shuffled array. - * @example - * - * _.shuffle([1, 2, 3, 4]); - * // => [4, 1, 3, 2] - */ - function shuffle(collection) { - return sampleSize(collection, MAX_ARRAY_LENGTH); - } - - /** - * Gets the size of `collection` by returning its length for array-like - * values or the number of own enumerable string keyed properties for objects. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Collection - * @param {Array|Object} collection The collection to inspect. - * @returns {number} Returns the collection size. - * @example - * - * _.size([1, 2, 3]); - * // => 3 - * - * _.size({ 'a': 1, 'b': 2 }); - * // => 2 - * - * _.size('pebbles'); - * // => 7 - */ - function size(collection) { - if (collection == null) { - return 0; - } - if (isArrayLike(collection)) { - var result = collection.length; - return (result && isString(collection)) ? stringSize(collection) : result; - } - if (isObjectLike(collection)) { - var tag = getTag(collection); - if (tag == mapTag || tag == setTag) { - return collection.size; - } - } - return keys(collection).length; - } - - /** - * Checks if `predicate` returns truthy for **any** element of `collection`. - * Iteration is stopped once `predicate` returns truthy. The predicate is - * invoked with three arguments: (value, index|key, collection). - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {Function} [predicate=_.identity] The function invoked per iteration. - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. - * @returns {boolean} Returns `true` if any element passes the predicate check, - * else `false`. - * @example - * - * _.some([null, 0, 'yes', false], Boolean); - * // => true - * - * var users = [ - * { 'user': 'barney', 'active': true }, - * { 'user': 'fred', 'active': false } - * ]; - * - * // The `_.matches` iteratee shorthand. - * _.some(users, { 'user': 'barney', 'active': false }); - * // => false - * - * // The `_.matchesProperty` iteratee shorthand. - * _.some(users, ['active', false]); - * // => true - * - * // The `_.property` iteratee shorthand. - * _.some(users, 'active'); - * // => true - */ - function some(collection, predicate, guard) { - var func = isArray(collection) ? arraySome : baseSome; - if (guard && isIterateeCall(collection, predicate, guard)) { - predicate = undefined; - } - return func(collection, getIteratee(predicate, 3)); - } - - /** - * Creates an array of elements, sorted in ascending order by the results of - * running each element in a collection thru each iteratee. This method - * performs a stable sort, that is, it preserves the original sort order of - * equal elements. The iteratees are invoked with one argument: (value). - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Collection - * @param {Array|Object} collection The collection to iterate over. - * @param {...(Function|Function[])} [iteratees=[_.identity]] - * The iteratees to sort by. - * @returns {Array} Returns the new sorted array. - * @example - * - * var users = [ - * { 'user': 'fred', 'age': 48 }, - * { 'user': 'barney', 'age': 36 }, - * { 'user': 'fred', 'age': 40 }, - * { 'user': 'barney', 'age': 34 } - * ]; - * - * _.sortBy(users, function(o) { return o.user; }); - * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]] - * - * _.sortBy(users, ['user', 'age']); - * // => objects for [['barney', 34], ['barney', 36], ['fred', 40], ['fred', 48]] - * - * _.sortBy(users, 'user', function(o) { - * return Math.floor(o.age / 10); - * }); - * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]] - */ - var sortBy = baseRest(function(collection, iteratees) { - if (collection == null) { - return []; - } - var length = iteratees.length; - if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) { - iteratees = []; - } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) { - iteratees = [iteratees[0]]; - } - return baseOrderBy(collection, baseFlatten(iteratees, 1), []); - }); - - /*------------------------------------------------------------------------*/ - - /** - * Gets the timestamp of the number of milliseconds that have elapsed since - * the Unix epoch (1 January 1970 00:00:00 UTC). - * - * @static - * @memberOf _ - * @since 2.4.0 - * @category Date - * @returns {number} Returns the timestamp. - * @example - * - * _.defer(function(stamp) { - * console.log(_.now() - stamp); - * }, _.now()); - * // => Logs the number of milliseconds it took for the deferred invocation. - */ - function now() { - return Date.now(); - } - - /*------------------------------------------------------------------------*/ - - /** - * The opposite of `_.before`; this method creates a function that invokes - * `func` once it's called `n` or more times. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Function - * @param {number} n The number of calls before `func` is invoked. - * @param {Function} func The function to restrict. - * @returns {Function} Returns the new restricted function. - * @example - * - * var saves = ['profile', 'settings']; - * - * var done = _.after(saves.length, function() { - * console.log('done saving!'); - * }); - * - * _.forEach(saves, function(type) { - * asyncSave({ 'type': type, 'complete': done }); - * }); - * // => Logs 'done saving!' after the two async saves have completed. - */ - function after(n, func) { - if (typeof func != 'function') { - throw new TypeError(FUNC_ERROR_TEXT); - } - n = toInteger(n); - return function() { - if (--n < 1) { - return func.apply(this, arguments); - } - }; - } - - /** - * Creates a function that invokes `func`, with up to `n` arguments, - * ignoring any additional arguments. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Function - * @param {Function} func The function to cap arguments for. - * @param {number} [n=func.length] The arity cap. - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. - * @returns {Function} Returns the new capped function. - * @example - * - * _.map(['6', '8', '10'], _.ary(parseInt, 1)); - * // => [6, 8, 10] - */ - function ary(func, n, guard) { - n = guard ? undefined : n; - n = (func && n == null) ? func.length : n; - return createWrap(func, ARY_FLAG, undefined, undefined, undefined, undefined, n); - } - - /** - * 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); - } - n = toInteger(n); - return function() { - if (--n > 0) { - result = func.apply(this, arguments); - } - if (n <= 1) { - func = undefined; - } - return result; - }; - } - - /** - * Creates a function that invokes `func` with the `this` binding of `thisArg` - * and `partials` prepended to the arguments it receives. - * - * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds, - * may be used as a placeholder for partially applied arguments. - * - * **Note:** Unlike native `Function#bind`, this method doesn't set the "length" - * property of bound functions. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Function - * @param {Function} func The function to bind. - * @param {*} thisArg The `this` binding of `func`. - * @param {...*} [partials] The arguments to be partially applied. - * @returns {Function} Returns the new bound function. - * @example - * - * function greet(greeting, punctuation) { - * return greeting + ' ' + this.user + punctuation; - * } - * - * var object = { 'user': 'fred' }; - * - * var bound = _.bind(greet, object, 'hi'); - * bound('!'); - * // => 'hi fred!' - * - * // Bound with placeholders. - * var bound = _.bind(greet, object, _, '!'); - * bound('hi'); - * // => 'hi fred!' - */ - var bind = baseRest(function(func, thisArg, partials) { - var bitmask = BIND_FLAG; - if (partials.length) { - var holders = replaceHolders(partials, getHolder(bind)); - bitmask |= PARTIAL_FLAG; - } - return createWrap(func, bitmask, thisArg, partials, holders); - }); - - /** - * Creates a function that invokes the method at `object[key]` with `partials` - * prepended to the arguments it receives. - * - * This method differs from `_.bind` by allowing bound functions to reference - * methods that may be redefined or don't yet exist. See - * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern) - * for more details. - * - * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic - * builds, may be used as a placeholder for partially applied arguments. - * - * @static - * @memberOf _ - * @since 0.10.0 - * @category Function - * @param {Object} object The object to invoke the method on. - * @param {string} key The key of the method. - * @param {...*} [partials] The arguments to be partially applied. - * @returns {Function} Returns the new bound function. - * @example - * - * var object = { - * 'user': 'fred', - * 'greet': function(greeting, punctuation) { - * return greeting + ' ' + this.user + punctuation; - * } - * }; - * - * var bound = _.bindKey(object, 'greet', 'hi'); - * bound('!'); - * // => 'hi fred!' - * - * object.greet = function(greeting, punctuation) { - * return greeting + 'ya ' + this.user + punctuation; - * }; - * - * bound('!'); - * // => 'hiya fred!' - * - * // Bound with placeholders. - * var bound = _.bindKey(object, 'greet', _, '!'); - * bound('hi'); - * // => 'hiya fred!' - */ - var bindKey = baseRest(function(object, key, partials) { - var bitmask = BIND_FLAG | BIND_KEY_FLAG; - if (partials.length) { - var holders = replaceHolders(partials, getHolder(bindKey)); - bitmask |= PARTIAL_FLAG; - } - return createWrap(key, bitmask, object, partials, holders); - }); - - /** - * Creates a function that accepts arguments of `func` and either invokes - * `func` returning its result, if at least `arity` number of arguments have - * been provided, or returns a function that accepts the remaining `func` - * arguments, and so on. The arity of `func` may be specified if `func.length` - * is not sufficient. - * - * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds, - * may be used as a placeholder for provided arguments. - * - * **Note:** This method doesn't set the "length" property of curried functions. - * - * @static - * @memberOf _ - * @since 2.0.0 - * @category Function - * @param {Function} func The function to curry. - * @param {number} [arity=func.length] The arity of `func`. - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. - * @returns {Function} Returns the new curried function. - * @example - * - * var abc = function(a, b, c) { - * return [a, b, c]; - * }; - * - * var curried = _.curry(abc); - * - * curried(1)(2)(3); - * // => [1, 2, 3] - * - * curried(1, 2)(3); - * // => [1, 2, 3] - * - * curried(1, 2, 3); - * // => [1, 2, 3] - * - * // Curried with placeholders. - * curried(1)(_, 3)(2); - * // => [1, 2, 3] - */ - function curry(func, arity, guard) { - arity = guard ? undefined : arity; - var result = createWrap(func, CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity); - result.placeholder = curry.placeholder; - return result; - } - - /** - * This method is like `_.curry` except that arguments are applied to `func` - * in the manner of `_.partialRight` instead of `_.partial`. - * - * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic - * builds, may be used as a placeholder for provided arguments. - * - * **Note:** This method doesn't set the "length" property of curried functions. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Function - * @param {Function} func The function to curry. - * @param {number} [arity=func.length] The arity of `func`. - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. - * @returns {Function} Returns the new curried function. - * @example - * - * var abc = function(a, b, c) { - * return [a, b, c]; - * }; - * - * var curried = _.curryRight(abc); - * - * curried(3)(2)(1); - * // => [1, 2, 3] - * - * curried(2, 3)(1); - * // => [1, 2, 3] - * - * curried(1, 2, 3); - * // => [1, 2, 3] - * - * // Curried with placeholders. - * curried(3)(1, _)(2); - * // => [1, 2, 3] - */ - function curryRight(func, arity, guard) { - arity = guard ? undefined : arity; - var result = createWrap(func, CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity); - result.placeholder = curryRight.placeholder; - return result; - } - - /** - * Creates a debounced function that delays invoking `func` until after `wait` - * milliseconds have elapsed since the last time the debounced function was - * invoked. The debounced function comes with a `cancel` method to cancel - * delayed `func` invocations and a `flush` method to immediately invoke them. - * Provide `options` to indicate whether `func` should be invoked on the - * leading and/or trailing edge of the `wait` timeout. The `func` is invoked - * with the last arguments provided to the debounced function. Subsequent - * calls to the debounced function return the result of the last `func` - * invocation. - * - * **Note:** If `leading` and `trailing` options are `true`, `func` is - * invoked on the trailing edge of the timeout only if the debounced function - * is invoked more than once during the `wait` timeout. - * - * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred - * until to the next tick, similar to `setTimeout` with a timeout of `0`. - * - * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/) - * for details over the differences between `_.debounce` and `_.throttle`. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Function - * @param {Function} func The function to debounce. - * @param {number} [wait=0] The number of milliseconds to delay. - * @param {Object} [options={}] The options object. - * @param {boolean} [options.leading=false] - * Specify invoking on the leading edge of the timeout. - * @param {number} [options.maxWait] - * The maximum time `func` is allowed to be delayed before it's invoked. - * @param {boolean} [options.trailing=true] - * Specify invoking on the trailing edge of the timeout. - * @returns {Function} Returns the new debounced function. - * @example - * - * // Avoid costly calculations while the window size is in flux. - * jQuery(window).on('resize', _.debounce(calculateLayout, 150)); - * - * // Invoke `sendMail` when clicked, debouncing subsequent calls. - * jQuery(element).on('click', _.debounce(sendMail, 300, { - * 'leading': true, - * 'trailing': false - * })); - * - * // Ensure `batchLog` is invoked once after 1 second of debounced calls. - * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 }); - * var source = new EventSource('/stream'); - * jQuery(source).on('message', debounced); - * - * // Cancel the trailing debounced invocation. - * jQuery(window).on('popstate', debounced.cancel); - */ - function debounce(func, wait, options) { - var lastArgs, - lastThis, - maxWait, - result, - timerId, - lastCallTime, - lastInvokeTime = 0, - leading = false, - maxing = false, - trailing = true; - - if (typeof func != 'function') { - throw new TypeError(FUNC_ERROR_TEXT); - } - wait = toNumber(wait) || 0; - if (isObject(options)) { - leading = !!options.leading; - maxing = 'maxWait' in options; - maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait; - trailing = 'trailing' in options ? !!options.trailing : trailing; - } - - function invokeFunc(time) { - var args = lastArgs, - thisArg = lastThis; - - lastArgs = lastThis = undefined; - lastInvokeTime = time; - result = func.apply(thisArg, args); - return result; - } - - function leadingEdge(time) { - // Reset any `maxWait` timer. - lastInvokeTime = time; - // Start the timer for the trailing edge. - timerId = setTimeout(timerExpired, wait); - // Invoke the leading edge. - return leading ? invokeFunc(time) : result; - } - - function remainingWait(time) { - var timeSinceLastCall = time - lastCallTime, - timeSinceLastInvoke = time - lastInvokeTime, - result = wait - timeSinceLastCall; - - return maxing ? nativeMin(result, maxWait - timeSinceLastInvoke) : result; - } - - function shouldInvoke(time) { - var timeSinceLastCall = time - lastCallTime, - timeSinceLastInvoke = time - lastInvokeTime; - - // Either this is the first call, activity has stopped and we're at the - // trailing edge, the system time has gone backwards and we're treating - // it as the trailing edge, or we've hit the `maxWait` limit. - return (lastCallTime === undefined || (timeSinceLastCall >= wait) || - (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait)); - } - - function timerExpired() { - var time = now(); - if (shouldInvoke(time)) { - return trailingEdge(time); - } - // Restart the timer. - timerId = setTimeout(timerExpired, remainingWait(time)); - } - - function trailingEdge(time) { - timerId = undefined; - - // Only invoke if we have `lastArgs` which means `func` has been - // debounced at least once. - if (trailing && lastArgs) { - return invokeFunc(time); - } - lastArgs = lastThis = undefined; - return result; - } - - function cancel() { - if (timerId !== undefined) { - clearTimeout(timerId); - } - lastInvokeTime = 0; - lastArgs = lastCallTime = lastThis = timerId = undefined; - } - - function flush() { - return timerId === undefined ? result : trailingEdge(now()); - } - - function debounced() { - var time = now(), - isInvoking = shouldInvoke(time); - - lastArgs = arguments; - lastThis = this; - lastCallTime = time; - - if (isInvoking) { - if (timerId === undefined) { - return leadingEdge(lastCallTime); - } - if (maxing) { - // Handle invocations in a tight loop. - timerId = setTimeout(timerExpired, wait); - return invokeFunc(lastCallTime); - } - } - if (timerId === undefined) { - timerId = setTimeout(timerExpired, wait); - } - return result; - } - debounced.cancel = cancel; - debounced.flush = flush; - return debounced; - } - - /** - * Defers invoking the `func` until the current call stack has cleared. Any - * additional arguments are provided to `func` when it's invoked. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Function - * @param {Function} func The function to defer. - * @param {...*} [args] The arguments to invoke `func` with. - * @returns {number} Returns the timer id. - * @example - * - * _.defer(function(text) { - * console.log(text); - * }, 'deferred'); - * // => Logs 'deferred' after one or more milliseconds. - */ - var defer = baseRest(function(func, args) { - return baseDelay(func, 1, args); - }); - - /** - * Invokes `func` after `wait` milliseconds. Any additional arguments are - * provided to `func` when it's invoked. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Function - * @param {Function} func The function to delay. - * @param {number} wait The number of milliseconds to delay invocation. - * @param {...*} [args] The arguments to invoke `func` with. - * @returns {number} Returns the timer id. - * @example - * - * _.delay(function(text) { - * console.log(text); - * }, 1000, 'later'); - * // => Logs 'later' after one second. - */ - var delay = baseRest(function(func, wait, args) { - return baseDelay(func, toNumber(wait) || 0, args); - }); - - /** - * Creates a function that invokes `func` with arguments reversed. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Function - * @param {Function} func The function to flip arguments for. - * @returns {Function} Returns the new flipped function. - * @example - * - * var flipped = _.flip(function() { - * return _.toArray(arguments); - * }); - * - * flipped('a', 'b', 'c', 'd'); - * // => ['d', 'c', 'b', 'a'] - */ - function flip(func) { - return createWrap(func, FLIP_FLAG); - } - - /** - * Creates a function that memoizes the result of `func`. If `resolver` is - * provided, it determines the cache key for storing the result based on the - * arguments provided to the memoized function. By default, the first argument - * provided to the memoized function is used as the map cache key. The `func` - * is invoked with the `this` binding of the memoized function. - * - * **Note:** The cache is exposed as the `cache` property on the memoized - * function. Its creation may be customized by replacing the `_.memoize.Cache` - * constructor with one whose instances implement the - * [`Map`](http://ecma-international.org/ecma-262/6.0/#sec-properties-of-the-map-prototype-object) - * method interface of `delete`, `get`, `has`, and `set`. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Function - * @param {Function} func The function to have its output memoized. - * @param {Function} [resolver] The function to resolve the cache key. - * @returns {Function} Returns the new memoized function. - * @example - * - * var object = { 'a': 1, 'b': 2 }; - * var other = { 'c': 3, 'd': 4 }; - * - * var values = _.memoize(_.values); - * values(object); - * // => [1, 2] - * - * values(other); - * // => [3, 4] - * - * object.a = 2; - * values(object); - * // => [1, 2] - * - * // Modify the result cache. - * values.cache.set(object, ['a', 'b']); - * values(object); - * // => ['a', 'b'] - * - * // Replace `_.memoize.Cache`. - * _.memoize.Cache = WeakMap; - */ - function memoize(func, resolver) { - if (typeof func != 'function' || (resolver && typeof resolver != 'function')) { - throw new TypeError(FUNC_ERROR_TEXT); - } - var memoized = function() { - var args = arguments, - key = resolver ? resolver.apply(this, args) : args[0], - cache = memoized.cache; - - if (cache.has(key)) { - return cache.get(key); - } - var result = func.apply(this, args); - memoized.cache = cache.set(key, result); - return result; - }; - memoized.cache = new (memoize.Cache || MapCache); - return memoized; - } - - // Assign cache to `_.memoize`. - memoize.Cache = MapCache; - - /** - * Creates a function that negates the result of the predicate `func`. The - * `func` predicate is invoked with the `this` binding and arguments of the - * created function. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Function - * @param {Function} predicate The predicate to negate. - * @returns {Function} Returns the new negated function. - * @example - * - * function isEven(n) { - * return n % 2 == 0; - * } - * - * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven)); - * // => [1, 3, 5] - */ - function negate(predicate) { - if (typeof predicate != 'function') { - throw new TypeError(FUNC_ERROR_TEXT); - } - return function() { - var args = arguments; - switch (args.length) { - case 0: return !predicate.call(this); - case 1: return !predicate.call(this, args[0]); - case 2: return !predicate.call(this, args[0], args[1]); - case 3: return !predicate.call(this, args[0], args[1], args[2]); - } - return !predicate.apply(this, args); - }; - } - - /** - * 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(); - * // => `createApplication` is invoked once - */ - function once(func) { - return before(2, func); - } - - /** - * Creates a function that invokes `func` with its arguments transformed. - * - * @static - * @since 4.0.0 - * @memberOf _ - * @category Function - * @param {Function} func The function to wrap. - * @param {...(Function|Function[])} [transforms=[_.identity]] - * The argument transforms. - * @returns {Function} Returns the new function. - * @example - * - * function doubled(n) { - * return n * 2; - * } - * - * function square(n) { - * return n * n; - * } - * - * var func = _.overArgs(function(x, y) { - * return [x, y]; - * }, [square, doubled]); - * - * func(9, 3); - * // => [81, 6] - * - * func(10, 5); - * // => [100, 10] - */ - var overArgs = baseRest(function(func, transforms) { - transforms = (transforms.length == 1 && isArray(transforms[0])) - ? arrayMap(transforms[0], baseUnary(getIteratee())) - : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee())); - - var funcsLength = transforms.length; - return baseRest(function(args) { - var index = -1, - length = nativeMin(args.length, funcsLength); - - while (++index < length) { - args[index] = transforms[index].call(this, args[index]); - } - return apply(func, this, args); - }); - }); - - /** - * Creates a function that invokes `func` with `partials` prepended to the - * arguments it receives. This method is like `_.bind` except it does **not** - * alter the `this` binding. - * - * The `_.partial.placeholder` value, which defaults to `_` in monolithic - * builds, may be used as a placeholder for partially applied arguments. - * - * **Note:** This method doesn't set the "length" property of partially - * applied functions. - * - * @static - * @memberOf _ - * @since 0.2.0 - * @category Function - * @param {Function} func The function to partially apply arguments to. - * @param {...*} [partials] The arguments to be partially applied. - * @returns {Function} Returns the new partially applied function. - * @example - * - * function greet(greeting, name) { - * return greeting + ' ' + name; - * } - * - * var sayHelloTo = _.partial(greet, 'hello'); - * sayHelloTo('fred'); - * // => 'hello fred' - * - * // Partially applied with placeholders. - * var greetFred = _.partial(greet, _, 'fred'); - * greetFred('hi'); - * // => 'hi fred' - */ - var partial = baseRest(function(func, partials) { - var holders = replaceHolders(partials, getHolder(partial)); - return createWrap(func, PARTIAL_FLAG, undefined, partials, holders); - }); - - /** - * This method is like `_.partial` except that partially applied arguments - * are appended to the arguments it receives. - * - * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic - * builds, may be used as a placeholder for partially applied arguments. - * - * **Note:** This method doesn't set the "length" property of partially - * applied functions. - * - * @static - * @memberOf _ - * @since 1.0.0 - * @category Function - * @param {Function} func The function to partially apply arguments to. - * @param {...*} [partials] The arguments to be partially applied. - * @returns {Function} Returns the new partially applied function. - * @example - * - * function greet(greeting, name) { - * return greeting + ' ' + name; - * } - * - * var greetFred = _.partialRight(greet, 'fred'); - * greetFred('hi'); - * // => 'hi fred' - * - * // Partially applied with placeholders. - * var sayHelloTo = _.partialRight(greet, 'hello', _); - * sayHelloTo('fred'); - * // => 'hello fred' - */ - var partialRight = baseRest(function(func, partials) { - var holders = replaceHolders(partials, getHolder(partialRight)); - return createWrap(func, PARTIAL_RIGHT_FLAG, undefined, partials, holders); - }); - - /** - * Creates a function that invokes `func` with arguments arranged according - * to the specified `indexes` where the argument value at the first index is - * provided as the first argument, the argument value at the second index is - * provided as the second argument, and so on. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Function - * @param {Function} func The function to rearrange arguments for. - * @param {...(number|number[])} indexes The arranged argument indexes. - * @returns {Function} Returns the new function. - * @example - * - * var rearged = _.rearg(function(a, b, c) { - * return [a, b, c]; - * }, [2, 0, 1]); - * - * rearged('b', 'c', 'a') - * // => ['a', 'b', 'c'] - */ - var rearg = baseRest(function(func, indexes) { - return createWrap(func, REARG_FLAG, undefined, undefined, undefined, baseFlatten(indexes, 1)); - }); - - /** - * 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 = start === undefined ? start : toInteger(start); - return baseRest(func, start); - } - - /** - * Creates a function that invokes `func` with the `this` binding of the - * create function and an array of arguments much like - * [`Function#apply`](http://www.ecma-international.org/ecma-262/6.0/#sec-function.prototype.apply). - * - * **Note:** This method is based on the - * [spread operator](https://mdn.io/spread_operator). - * - * @static - * @memberOf _ - * @since 3.2.0 - * @category Function - * @param {Function} func The function to spread arguments over. - * @param {number} [start=0] The start position of the spread. - * @returns {Function} Returns the new function. - * @example - * - * var say = _.spread(function(who, what) { - * return who + ' says ' + what; - * }); - * - * say(['fred', 'hello']); - * // => 'fred says hello' - * - * var numbers = Promise.all([ - * Promise.resolve(40), - * Promise.resolve(36) - * ]); - * - * numbers.then(_.spread(function(x, y) { - * return x + y; - * })); - * // => a Promise of 76 - */ - function spread(func, start) { - if (typeof func != 'function') { - throw new TypeError(FUNC_ERROR_TEXT); - } - start = start === undefined ? 0 : nativeMax(toInteger(start), 0); - return baseRest(function(args) { - var array = args[start], - otherArgs = castSlice(args, 0, start); - - if (array) { - arrayPush(otherArgs, array); - } - return apply(func, this, otherArgs); - }); - } - - /** - * Creates a throttled function that only invokes `func` at most once per - * every `wait` milliseconds. The throttled function comes with a `cancel` - * method to cancel delayed `func` invocations and a `flush` method to - * immediately invoke them. Provide `options` to indicate whether `func` - * should be invoked on the leading and/or trailing edge of the `wait` - * timeout. The `func` is invoked with the last arguments provided to the - * throttled function. Subsequent calls to the throttled function return the - * result of the last `func` invocation. - * - * **Note:** If `leading` and `trailing` options are `true`, `func` is - * invoked on the trailing edge of the timeout only if the throttled function - * is invoked more than once during the `wait` timeout. - * - * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred - * until to the next tick, similar to `setTimeout` with a timeout of `0`. - * - * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/) - * for details over the differences between `_.throttle` and `_.debounce`. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Function - * @param {Function} func The function to throttle. - * @param {number} [wait=0] The number of milliseconds to throttle invocations to. - * @param {Object} [options={}] The options object. - * @param {boolean} [options.leading=true] - * Specify invoking on the leading edge of the timeout. - * @param {boolean} [options.trailing=true] - * Specify invoking on the trailing edge of the timeout. - * @returns {Function} Returns the new throttled function. - * @example - * - * // Avoid excessively updating the position while scrolling. - * jQuery(window).on('scroll', _.throttle(updatePosition, 100)); - * - * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes. - * var throttled = _.throttle(renewToken, 300000, { 'trailing': false }); - * jQuery(element).on('click', throttled); - * - * // Cancel the trailing throttled invocation. - * jQuery(window).on('popstate', throttled.cancel); - */ - function throttle(func, wait, options) { - var leading = true, - trailing = true; - - if (typeof func != 'function') { - throw new TypeError(FUNC_ERROR_TEXT); - } - if (isObject(options)) { - leading = 'leading' in options ? !!options.leading : leading; - trailing = 'trailing' in options ? !!options.trailing : trailing; - } - return debounce(func, wait, { - 'leading': leading, - 'maxWait': wait, - 'trailing': trailing - }); - } - - /** - * Creates a function that accepts up to one argument, ignoring any - * additional arguments. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Function - * @param {Function} func The function to cap arguments for. - * @returns {Function} Returns the new capped function. - * @example - * - * _.map(['6', '8', '10'], _.unary(parseInt)); - * // => [6, 8, 10] - */ - function unary(func) { - return ary(func, 1); - } - - /** - * Creates a function that provides `value` to `wrapper` as its first - * argument. Any additional arguments provided to the function are appended - * to those provided to the `wrapper`. The wrapper is invoked with the `this` - * binding of the created function. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Function - * @param {*} value The value to wrap. - * @param {Function} [wrapper=identity] The wrapper function. - * @returns {Function} Returns the new function. - * @example - * - * var p = _.wrap(_.escape, function(func, text) { - * return '<p>' + func(text) + '</p>'; - * }); - * - * p('fred, barney, & pebbles'); - * // => '<p>fred, barney, & pebbles</p>' - */ - function wrap(value, wrapper) { - wrapper = wrapper == null ? identity : wrapper; - return partial(wrapper, value); - } - - /*------------------------------------------------------------------------*/ - - /** - * Casts `value` as an array if it's not one. - * - * @static - * @memberOf _ - * @since 4.4.0 - * @category Lang - * @param {*} value The value to inspect. - * @returns {Array} Returns the cast array. - * @example - * - * _.castArray(1); - * // => [1] - * - * _.castArray({ 'a': 1 }); - * // => [{ 'a': 1 }] - * - * _.castArray('abc'); - * // => ['abc'] - * - * _.castArray(null); - * // => [null] - * - * _.castArray(undefined); - * // => [undefined] - * - * _.castArray(); - * // => [] - * - * var array = [1, 2, 3]; - * console.log(_.castArray(array) === array); - * // => true - */ - function castArray() { - if (!arguments.length) { - return []; - } - var value = arguments[0]; - return isArray(value) ? value : [value]; - } - - /** - * Creates a shallow clone of `value`. - * - * **Note:** This method is loosely based on the - * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm) - * and supports cloning arrays, array buffers, booleans, date objects, maps, - * numbers, `Object` objects, regexes, sets, strings, symbols, and typed - * arrays. The own enumerable properties of `arguments` objects are cloned - * as plain objects. An empty object is returned for uncloneable values such - * as error objects, functions, DOM nodes, and WeakMaps. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Lang - * @param {*} value The value to clone. - * @returns {*} Returns the cloned value. - * @see _.cloneDeep - * @example - * - * var objects = [{ 'a': 1 }, { 'b': 2 }]; - * - * var shallow = _.clone(objects); - * console.log(shallow[0] === objects[0]); - * // => true - */ - function clone(value) { - return baseClone(value, false, true); - } - - /** - * This method is like `_.clone` except that it accepts `customizer` which - * is invoked to produce the cloned value. If `customizer` returns `undefined`, - * cloning is handled by the method instead. The `customizer` is invoked with - * up to four arguments; (value [, index|key, object, stack]). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Lang - * @param {*} value The value to clone. - * @param {Function} [customizer] The function to customize cloning. - * @returns {*} Returns the cloned value. - * @see _.cloneDeepWith - * @example - * - * function customizer(value) { - * if (_.isElement(value)) { - * return value.cloneNode(false); - * } - * } - * - * var el = _.cloneWith(document.body, customizer); - * - * console.log(el === document.body); - * // => false - * console.log(el.nodeName); - * // => 'BODY' - * console.log(el.childNodes.length); - * // => 0 - */ - function cloneWith(value, customizer) { - return baseClone(value, false, true, customizer); - } - - /** - * This method is like `_.clone` except that it recursively clones `value`. - * - * @static - * @memberOf _ - * @since 1.0.0 - * @category Lang - * @param {*} value The value to recursively clone. - * @returns {*} Returns the deep cloned value. - * @see _.clone - * @example - * - * var objects = [{ 'a': 1 }, { 'b': 2 }]; - * - * var deep = _.cloneDeep(objects); - * console.log(deep[0] === objects[0]); - * // => false - */ - function cloneDeep(value) { - return baseClone(value, true, true); - } - - /** - * This method is like `_.cloneWith` except that it recursively clones `value`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Lang - * @param {*} value The value to recursively clone. - * @param {Function} [customizer] The function to customize cloning. - * @returns {*} Returns the deep cloned value. - * @see _.cloneWith - * @example - * - * function customizer(value) { - * if (_.isElement(value)) { - * return value.cloneNode(true); - * } - * } - * - * var el = _.cloneDeepWith(document.body, customizer); - * - * console.log(el === document.body); - * // => false - * console.log(el.nodeName); - * // => 'BODY' - * console.log(el.childNodes.length); - * // => 20 - */ - function cloneDeepWith(value, customizer) { - return baseClone(value, true, true, customizer); - } - - /** - * Checks if `object` conforms to `source` by invoking the predicate - * properties of `source` with the corresponding property values of `object`. - * - * **Note:** This method is equivalent to `_.conforms` when `source` is - * partially applied. - * - * @static - * @memberOf _ - * @since 4.14.0 - * @category Lang - * @param {Object} object The object to inspect. - * @param {Object} source The object of property predicates to conform to. - * @returns {boolean} Returns `true` if `object` conforms, else `false`. - * @example - * - * var object = { 'a': 1, 'b': 2 }; - * - * _.conformsTo(object, { 'b': function(n) { return n > 1; } }); - * // => true - * - * _.conformsTo(object, { 'b': function(n) { return n > 2; } }); - * // => false - */ - function conformsTo(object, source) { - return source == null || baseConformsTo(object, source, keys(source)); - } - - /** - * Performs a - * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero) - * comparison between two values to determine if they are equivalent. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Lang - * @param {*} value The value to compare. - * @param {*} other The other value to compare. - * @returns {boolean} Returns `true` if the values are equivalent, else `false`. - * @example - * - * var object = { 'a': 1 }; - * var other = { 'a': 1 }; - * - * _.eq(object, object); - * // => true - * - * _.eq(object, other); - * // => false - * - * _.eq('a', 'a'); - * // => true - * - * _.eq('a', Object('a')); - * // => false - * - * _.eq(NaN, NaN); - * // => true - */ - function eq(value, other) { - return value === other || (value !== value && other !== other); - } - - /** - * Checks if `value` is greater than `other`. - * - * @static - * @memberOf _ - * @since 3.9.0 - * @category Lang - * @param {*} value The value to compare. - * @param {*} other The other value to compare. - * @returns {boolean} Returns `true` if `value` is greater than `other`, - * else `false`. - * @see _.lt - * @example - * - * _.gt(3, 1); - * // => true - * - * _.gt(3, 3); - * // => false - * - * _.gt(1, 3); - * // => false - */ - var gt = createRelationalOperation(baseGt); - - /** - * Checks if `value` is greater than or equal to `other`. - * - * @static - * @memberOf _ - * @since 3.9.0 - * @category Lang - * @param {*} value The value to compare. - * @param {*} other The other value to compare. - * @returns {boolean} Returns `true` if `value` is greater than or equal to - * `other`, else `false`. - * @see _.lte - * @example - * - * _.gte(3, 1); - * // => true - * - * _.gte(3, 3); - * // => true - * - * _.gte(1, 3); - * // => false - */ - var gte = createRelationalOperation(function(value, other) { - return value >= other; - }); - - /** - * 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 an `arguments` object, - * 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.call(value, 'callee') && - (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag); - } - - /** - * Checks if `value` is classified as an `Array` object. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is an array, else `false`. - * @example - * - * _.isArray([1, 2, 3]); - * // => true - * - * _.isArray(document.body.children); - * // => false - * - * _.isArray('abc'); - * // => false - * - * _.isArray(_.noop); - * // => false - */ - var isArray = Array.isArray; - - /** - * Checks if `value` is classified as an `ArrayBuffer` object. - * - * @static - * @memberOf _ - * @since 4.3.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`. - * @example - * - * _.isArrayBuffer(new ArrayBuffer(2)); - * // => true - * - * _.isArrayBuffer(new Array(2)); - * // => false - */ - var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer; - - /** - * 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); - } - - /** - * 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); - } - - /** - * Checks if `value` is classified as a boolean primitive or object. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a boolean, else `false`. - * @example - * - * _.isBoolean(false); - * // => true - * - * _.isBoolean(null); - * // => false - */ - function isBoolean(value) { - return value === true || value === false || - (isObjectLike(value) && objectToString.call(value) == boolTag); - } - - /** - * Checks if `value` is a buffer. - * - * @static - * @memberOf _ - * @since 4.3.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a buffer, else `false`. - * @example - * - * _.isBuffer(new Buffer(2)); - * // => true - * - * _.isBuffer(new Uint8Array(2)); - * // => false - */ - var isBuffer = nativeIsBuffer || stubFalse; - - /** - * Checks if `value` is classified as a `Date` object. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a date object, else `false`. - * @example - * - * _.isDate(new Date); - * // => true - * - * _.isDate('Mon April 23 2012'); - * // => false - */ - var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate; - - /** - * Checks if `value` is likely a DOM element. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a DOM element, - * else `false`. - * @example - * - * _.isElement(document.body); - * // => true - * - * _.isElement('<body>'); - * // => false - */ - function isElement(value) { - return !!value && value.nodeType === 1 && isObjectLike(value) && !isPlainObject(value); - } - - /** - * Checks if `value` is an empty object, collection, map, or set. - * - * Objects are considered empty if they have no own enumerable string keyed - * properties. - * - * Array-like values such as `arguments` objects, arrays, buffers, strings, or - * jQuery-like collections are considered empty if they have a `length` of `0`. - * Similarly, maps and sets are considered empty if they have a `size` of `0`. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is empty, else `false`. - * @example - * - * _.isEmpty(null); - * // => true - * - * _.isEmpty(true); - * // => true - * - * _.isEmpty(1); - * // => true - * - * _.isEmpty([1, 2, 3]); - * // => false - * - * _.isEmpty({ 'a': 1 }); - * // => false - */ - function isEmpty(value) { - if (isArrayLike(value) && - (isArray(value) || isString(value) || isFunction(value.splice) || - isArguments(value) || isBuffer(value))) { - return !value.length; - } - if (isObjectLike(value)) { - var tag = getTag(value); - if (tag == mapTag || tag == setTag) { - return !value.size; - } - } - for (var key in value) { - if (hasOwnProperty.call(value, key)) { - return false; - } - } - return !(nonEnumShadows && keys(value).length); - } - - /** - * Performs a deep comparison between two values to determine if they are - * equivalent. - * - * **Note:** This method supports comparing arrays, array buffers, booleans, - * date objects, error objects, maps, numbers, `Object` objects, regexes, - * sets, strings, symbols, and typed arrays. `Object` objects are compared - * by their own, not inherited, enumerable properties. Functions and DOM - * nodes are **not** supported. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Lang - * @param {*} value The value to compare. - * @param {*} other The other value to compare. - * @returns {boolean} Returns `true` if the values are equivalent, - * else `false`. - * @example - * - * var object = { 'a': 1 }; - * var other = { 'a': 1 }; - * - * _.isEqual(object, other); - * // => true - * - * object === other; - * // => false - */ - function isEqual(value, other) { - return baseIsEqual(value, other); - } - - /** - * This method is like `_.isEqual` except that it accepts `customizer` which - * is invoked to compare values. If `customizer` returns `undefined`, comparisons - * are handled by the method instead. The `customizer` is invoked with up to - * six arguments: (objValue, othValue [, index|key, object, other, stack]). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Lang - * @param {*} value The value to compare. - * @param {*} other The other value to compare. - * @param {Function} [customizer] The function to customize comparisons. - * @returns {boolean} Returns `true` if the values are equivalent, - * else `false`. - * @example - * - * function isGreeting(value) { - * return /^h(?:i|ello)$/.test(value); - * } - * - * function customizer(objValue, othValue) { - * if (isGreeting(objValue) && isGreeting(othValue)) { - * return true; - * } - * } - * - * var array = ['hello', 'goodbye']; - * var other = ['hi', 'goodbye']; - * - * _.isEqualWith(array, other, customizer); - * // => true - */ - function isEqualWith(value, other, customizer) { - customizer = typeof customizer == 'function' ? customizer : undefined; - var result = customizer ? customizer(value, other) : undefined; - return result === undefined ? baseIsEqual(value, other, customizer) : !!result; - } - - /** - * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`, - * `SyntaxError`, `TypeError`, or `URIError` object. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is an error object, - * else `false`. - * @example - * - * _.isError(new Error); - * // => true - * - * _.isError(Error); - * // => false - */ - function isError(value) { - if (!isObjectLike(value)) { - return false; - } - return (objectToString.call(value) == errorTag) || - (typeof value.message == 'string' && typeof value.name == 'string'); - } - - /** - * Checks if `value` is a finite primitive number. - * - * **Note:** This method is based on - * [`Number.isFinite`](https://mdn.io/Number/isFinite). - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a finite number, - * else `false`. - * @example - * - * _.isFinite(3); - * // => true - * - * _.isFinite(Number.MIN_VALUE); - * // => true - * - * _.isFinite(Infinity); - * // => false - * - * _.isFinite('3'); - * // => false - */ - function isFinite(value) { - return typeof value == 'number' && nativeIsFinite(value); - } - - /** - * 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 a function, 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 an integer. - * - * **Note:** This method is based on - * [`Number.isInteger`](https://mdn.io/Number/isInteger). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is an integer, else `false`. - * @example - * - * _.isInteger(3); - * // => true - * - * _.isInteger(Number.MIN_VALUE); - * // => false - * - * _.isInteger(Infinity); - * // => false - * - * _.isInteger('3'); - * // => false - */ - function isInteger(value) { - return typeof value == 'number' && value == toInteger(value); - } - - /** - * 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 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'); - } - - /** - * 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'; - } - - /** - * Checks if `value` is classified as a `Map` object. - * - * @static - * @memberOf _ - * @since 4.3.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a map, else `false`. - * @example - * - * _.isMap(new Map); - * // => true - * - * _.isMap(new WeakMap); - * // => false - */ - var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap; - - /** - * Performs a partial deep comparison between `object` and `source` to - * determine if `object` contains equivalent property values. - * - * **Note:** This method supports comparing the same values as `_.isEqual` - * and is equivalent to `_.matches` when `source` is partially applied. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Lang - * @param {Object} object The object to inspect. - * @param {Object} source The object of property values to match. - * @returns {boolean} Returns `true` if `object` is a match, else `false`. - * @example - * - * var object = { 'a': 1, 'b': 2 }; - * - * _.isMatch(object, { 'b': 2 }); - * // => true - * - * _.isMatch(object, { 'b': 1 }); - * // => false - */ - function isMatch(object, source) { - return object === source || baseIsMatch(object, source, getMatchData(source)); - } - - /** - * This method is like `_.isMatch` except that it accepts `customizer` which - * is invoked to compare values. If `customizer` returns `undefined`, comparisons - * are handled by the method instead. The `customizer` is invoked with five - * arguments: (objValue, srcValue, index|key, object, source). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Lang - * @param {Object} object The object to inspect. - * @param {Object} source The object of property values to match. - * @param {Function} [customizer] The function to customize comparisons. - * @returns {boolean} Returns `true` if `object` is a match, else `false`. - * @example - * - * function isGreeting(value) { - * return /^h(?:i|ello)$/.test(value); - * } - * - * function customizer(objValue, srcValue) { - * if (isGreeting(objValue) && isGreeting(srcValue)) { - * return true; - * } - * } - * - * var object = { 'greeting': 'hello' }; - * var source = { 'greeting': 'hi' }; - * - * _.isMatchWith(object, source, customizer); - * // => true - */ - function isMatchWith(object, source, customizer) { - customizer = typeof customizer == 'function' ? customizer : undefined; - return baseIsMatch(object, source, getMatchData(source), customizer); - } - - /** - * Checks if `value` is `NaN`. - * - * **Note:** This method is based on - * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as - * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for - * `undefined` and other non-number values. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`. - * @example - * - * _.isNaN(NaN); - * // => true - * - * _.isNaN(new Number(NaN)); - * // => true - * - * isNaN(undefined); - * // => true - * - * _.isNaN(undefined); - * // => false - */ - function isNaN(value) { - // An `NaN` primitive is the only value that is not equal to itself. - // Perform the `toStringTag` check first to avoid errors with some - // ActiveX objects in IE. - return isNumber(value) && value != +value; - } - - /** - * Checks if `value` is a pristine native function. - * - * **Note:** This method can't reliably detect native functions in the presence - * of the core-js package because core-js circumvents this kind of detection. - * Despite multiple requests, the core-js maintainer has made it clear: any - * attempt to fix the detection will be obstructed. As a result, we're left - * with little choice but to throw an error. Unfortunately, this also affects - * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill), - * which rely on core-js. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a native function, - * else `false`. - * @example - * - * _.isNative(Array.prototype.push); - * // => true - * - * _.isNative(_); - * // => false - */ - function isNative(value) { - if (isMaskable(value)) { - throw new Error('This method is not supported with core-js. Try https://github.com/es-shims.'); - } - return baseIsNative(value); - } - - /** - * Checks if `value` is `null`. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is `null`, else `false`. - * @example - * - * _.isNull(null); - * // => true - * - * _.isNull(void 0); - * // => false - */ - function isNull(value) { - return value === null; - } - - /** - * Checks if `value` is `null` or `undefined`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is nullish, else `false`. - * @example - * - * _.isNil(null); - * // => true - * - * _.isNil(void 0); - * // => true - * - * _.isNil(NaN); - * // => false - */ - function isNil(value) { - return value == null; - } - - /** - * Checks if `value` is classified as a `Number` primitive or object. - * - * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are - * classified as numbers, use the `_.isFinite` method. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a number, else `false`. - * @example - * - * _.isNumber(3); - * // => true - * - * _.isNumber(Number.MIN_VALUE); - * // => true - * - * _.isNumber(Infinity); - * // => true - * - * _.isNumber('3'); - * // => false - */ - function isNumber(value) { - return typeof value == 'number' || - (isObjectLike(value) && objectToString.call(value) == numberTag); - } - - /** - * Checks if `value` is a plain object, that is, an object created by the - * `Object` constructor or one with a `[[Prototype]]` of `null`. - * - * @static - * @memberOf _ - * @since 0.8.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a plain object, - * else `false`. - * @example - * - * function Foo() { - * this.a = 1; - * } - * - * _.isPlainObject(new Foo); - * // => false - * - * _.isPlainObject([1, 2, 3]); - * // => false - * - * _.isPlainObject({ 'x': 0, 'y': 0 }); - * // => true - * - * _.isPlainObject(Object.create(null)); - * // => true - */ - function isPlainObject(value) { - if (!isObjectLike(value) || - objectToString.call(value) != objectTag || isHostObject(value)) { - return false; - } - var proto = getPrototype(value); - if (proto === null) { - return true; - } - var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor; - return (typeof Ctor == 'function' && - Ctor instanceof Ctor && funcToString.call(Ctor) == objectCtorString); - } - - /** - * Checks if `value` is classified as a `RegExp` object. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a regexp, else `false`. - * @example - * - * _.isRegExp(/abc/); - * // => true - * - * _.isRegExp('/abc/'); - * // => false - */ - var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp; - - /** - * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754 - * double precision number which isn't the result of a rounded unsafe integer. - * - * **Note:** This method is based on - * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a safe integer, - * else `false`. - * @example - * - * _.isSafeInteger(3); - * // => true - * - * _.isSafeInteger(Number.MIN_VALUE); - * // => false - * - * _.isSafeInteger(Infinity); - * // => false - * - * _.isSafeInteger('3'); - * // => false - */ - function isSafeInteger(value) { - return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER; - } - - /** - * Checks if `value` is classified as a `Set` object. - * - * @static - * @memberOf _ - * @since 4.3.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a set, else `false`. - * @example - * - * _.isSet(new Set); - * // => true - * - * _.isSet(new WeakSet); - * // => false - */ - var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet; - - /** - * 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 a string, else `false`. - * @example - * - * _.isString('abc'); - * // => true - * - * _.isString(1); - * // => false - */ - function isString(value) { - return typeof value == 'string' || - (!isArray(value) && isObjectLike(value) && objectToString.call(value) == stringTag); - } - - /** - * 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 a symbol, else `false`. - * @example - * - * _.isSymbol(Symbol.iterator); - * // => true - * - * _.isSymbol('abc'); - * // => false - */ - function isSymbol(value) { - return typeof value == 'symbol' || - (isObjectLike(value) && objectToString.call(value) == symbolTag); - } - - /** - * Checks if `value` is classified as a typed array. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a typed array, else `false`. - * @example - * - * _.isTypedArray(new Uint8Array); - * // => true - * - * _.isTypedArray([]); - * // => false - */ - var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray; - - /** - * Checks if `value` is `undefined`. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`. - * @example - * - * _.isUndefined(void 0); - * // => true - * - * _.isUndefined(null); - * // => false - */ - function isUndefined(value) { - return value === undefined; - } - - /** - * Checks if `value` is classified as a `WeakMap` object. - * - * @static - * @memberOf _ - * @since 4.3.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a weak map, else `false`. - * @example - * - * _.isWeakMap(new WeakMap); - * // => true - * - * _.isWeakMap(new Map); - * // => false - */ - function isWeakMap(value) { - return isObjectLike(value) && getTag(value) == weakMapTag; - } - - /** - * Checks if `value` is classified as a `WeakSet` object. - * - * @static - * @memberOf _ - * @since 4.3.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a weak set, else `false`. - * @example - * - * _.isWeakSet(new WeakSet); - * // => true - * - * _.isWeakSet(new Set); - * // => false - */ - function isWeakSet(value) { - return isObjectLike(value) && objectToString.call(value) == weakSetTag; - } - - /** - * Checks if `value` is less than `other`. - * - * @static - * @memberOf _ - * @since 3.9.0 - * @category Lang - * @param {*} value The value to compare. - * @param {*} other The other value to compare. - * @returns {boolean} Returns `true` if `value` is less than `other`, - * else `false`. - * @see _.gt - * @example - * - * _.lt(1, 3); - * // => true - * - * _.lt(3, 3); - * // => false - * - * _.lt(3, 1); - * // => false - */ - var lt = createRelationalOperation(baseLt); - - /** - * Checks if `value` is less than or equal to `other`. - * - * @static - * @memberOf _ - * @since 3.9.0 - * @category Lang - * @param {*} value The value to compare. - * @param {*} other The other value to compare. - * @returns {boolean} Returns `true` if `value` is less than or equal to - * `other`, else `false`. - * @see _.gte - * @example - * - * _.lte(1, 3); - * // => true - * - * _.lte(3, 3); - * // => true - * - * _.lte(3, 1); - * // => false - */ - var lte = createRelationalOperation(function(value, other) { - return value <= other; - }); - - /** - * Converts `value` to an array. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Lang - * @param {*} value The value to convert. - * @returns {Array} Returns the converted array. - * @example - * - * _.toArray({ 'a': 1, 'b': 2 }); - * // => [1, 2] - * - * _.toArray('abc'); - * // => ['a', 'b', 'c'] - * - * _.toArray(1); - * // => [] - * - * _.toArray(null); - * // => [] - */ - function toArray(value) { - if (!value) { - return []; - } - if (isArrayLike(value)) { - return isString(value) ? stringToArray(value) : copyArray(value); - } - if (iteratorSymbol && value[iteratorSymbol]) { - return iteratorToArray(value[iteratorSymbol]()); - } - var tag = getTag(value), - func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values); - - return func(value); - } - - /** - * 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; - } - - /** - * Converts `value` to an integer suitable for use as the length of an - * array-like object. - * - * **Note:** This method is 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 convert. - * @returns {number} Returns the converted integer. - * @example - * - * _.toLength(3.2); - * // => 3 - * - * _.toLength(Number.MIN_VALUE); - * // => 0 - * - * _.toLength(Infinity); - * // => 4294967295 - * - * _.toLength('3.2'); - * // => 3 - */ - function toLength(value) { - return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0; - } - - /** - * 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); - } - - /** - * Converts `value` to a plain object flattening inherited enumerable string - * keyed properties of `value` to own properties of the plain object. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Lang - * @param {*} value The value to convert. - * @returns {Object} Returns the converted plain object. - * @example - * - * function Foo() { - * this.b = 2; - * } - * - * Foo.prototype.c = 3; - * - * _.assign({ 'a': 1 }, new Foo); - * // => { 'a': 1, 'b': 2 } - * - * _.assign({ 'a': 1 }, _.toPlainObject(new Foo)); - * // => { 'a': 1, 'b': 2, 'c': 3 } - */ - function toPlainObject(value) { - return copyObject(value, keysIn(value)); - } - - /** - * Converts `value` to a safe integer. A safe integer can be compared and - * represented correctly. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Lang - * @param {*} value The value to convert. - * @returns {number} Returns the converted integer. - * @example - * - * _.toSafeInteger(3.2); - * // => 3 - * - * _.toSafeInteger(Number.MIN_VALUE); - * // => 0 - * - * _.toSafeInteger(Infinity); - * // => 9007199254740991 - * - * _.toSafeInteger('3.2'); - * // => 3 - */ - function toSafeInteger(value) { - return baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER); - } - - /** - * 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); - } - - /*------------------------------------------------------------------------*/ - - /** - * Assigns own enumerable string keyed properties of source objects to the - * destination object. Source objects are applied from left to right. - * Subsequent sources overwrite property assignments of previous sources. - * - * **Note:** This method mutates `object` and is loosely based on - * [`Object.assign`](https://mdn.io/Object/assign). - * - * @static - * @memberOf _ - * @since 0.10.0 - * @category Object - * @param {Object} object The destination object. - * @param {...Object} [sources] The source objects. - * @returns {Object} Returns `object`. - * @see _.assignIn - * @example - * - * function Foo() { - * this.a = 1; - * } - * - * function Bar() { - * this.c = 3; - * } - * - * Foo.prototype.b = 2; - * Bar.prototype.d = 4; - * - * _.assign({ 'a': 0 }, new Foo, new Bar); - * // => { 'a': 1, 'c': 3 } - */ - var assign = createAssigner(function(object, source) { - if (nonEnumShadows || isPrototype(source) || isArrayLike(source)) { - copyObject(source, keys(source), object); - return; - } - for (var key in source) { - if (hasOwnProperty.call(source, key)) { - assignValue(object, key, source[key]); - } - } - }); - - /** - * This method is like `_.assign` except that it iterates over own and - * inherited source properties. - * - * **Note:** This method mutates `object`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @alias extend - * @category Object - * @param {Object} object The destination object. - * @param {...Object} [sources] The source objects. - * @returns {Object} Returns `object`. - * @see _.assign - * @example - * - * function Foo() { - * this.a = 1; - * } - * - * function Bar() { - * this.c = 3; - * } - * - * Foo.prototype.b = 2; - * Bar.prototype.d = 4; - * - * _.assignIn({ 'a': 0 }, new Foo, new Bar); - * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 } - */ - var assignIn = createAssigner(function(object, source) { - if (nonEnumShadows || isPrototype(source) || isArrayLike(source)) { - copyObject(source, keysIn(source), object); - return; - } - for (var key in source) { - assignValue(object, key, source[key]); - } - }); - - /** - * This method is like `_.assignIn` except that it accepts `customizer` - * which is invoked to produce the assigned values. If `customizer` returns - * `undefined`, assignment is handled by the method instead. The `customizer` - * is invoked with five arguments: (objValue, srcValue, key, object, source). - * - * **Note:** This method mutates `object`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @alias extendWith - * @category Object - * @param {Object} object The destination object. - * @param {...Object} sources The source objects. - * @param {Function} [customizer] The function to customize assigned values. - * @returns {Object} Returns `object`. - * @see _.assignWith - * @example - * - * function customizer(objValue, srcValue) { - * return _.isUndefined(objValue) ? srcValue : objValue; - * } - * - * var defaults = _.partialRight(_.assignInWith, customizer); - * - * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); - * // => { 'a': 1, 'b': 2 } - */ - var assignInWith = createAssigner(function(object, source, srcIndex, customizer) { - copyObject(source, keysIn(source), object, customizer); - }); - - /** - * This method is like `_.assign` except that it accepts `customizer` - * which is invoked to produce the assigned values. If `customizer` returns - * `undefined`, assignment is handled by the method instead. The `customizer` - * is invoked with five arguments: (objValue, srcValue, key, object, source). - * - * **Note:** This method mutates `object`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Object - * @param {Object} object The destination object. - * @param {...Object} sources The source objects. - * @param {Function} [customizer] The function to customize assigned values. - * @returns {Object} Returns `object`. - * @see _.assignInWith - * @example - * - * function customizer(objValue, srcValue) { - * return _.isUndefined(objValue) ? srcValue : objValue; - * } - * - * var defaults = _.partialRight(_.assignWith, customizer); - * - * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); - * // => { 'a': 1, 'b': 2 } - */ - var assignWith = createAssigner(function(object, source, srcIndex, customizer) { - copyObject(source, keys(source), object, customizer); - }); - - /** - * Creates an array of values corresponding to `paths` of `object`. - * - * @static - * @memberOf _ - * @since 1.0.0 - * @category Object - * @param {Object} object The object to iterate over. - * @param {...(string|string[])} [paths] The property paths of elements to pick. - * @returns {Array} Returns the picked values. - * @example - * - * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] }; - * - * _.at(object, ['a[0].b.c', 'a[1]']); - * // => [3, 4] - */ - var at = baseRest(function(object, paths) { - return baseAt(object, baseFlatten(paths, 1)); - }); - - /** - * Creates an object that inherits from the `prototype` object. If a - * `properties` object is given, its own enumerable string keyed properties - * are assigned to the created object. - * - * @static - * @memberOf _ - * @since 2.3.0 - * @category Object - * @param {Object} prototype The object to inherit from. - * @param {Object} [properties] The properties to assign to the object. - * @returns {Object} Returns the new object. - * @example - * - * function Shape() { - * this.x = 0; - * this.y = 0; - * } - * - * function Circle() { - * Shape.call(this); - * } - * - * Circle.prototype = _.create(Shape.prototype, { - * 'constructor': Circle - * }); - * - * var circle = new Circle; - * circle instanceof Circle; - * // => true - * - * circle instanceof Shape; - * // => true - */ - function create(prototype, properties) { - var result = baseCreate(prototype); - return properties ? baseAssign(result, properties) : result; - } - - /** - * Assigns own and inherited enumerable string keyed properties of source - * objects to the destination object for all destination properties that - * resolve to `undefined`. Source objects are applied from left to right. - * Once a property is set, additional values of the same property are ignored. - * - * **Note:** This method mutates `object`. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Object - * @param {Object} object The destination object. - * @param {...Object} [sources] The source objects. - * @returns {Object} Returns `object`. - * @see _.defaultsDeep - * @example - * - * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); - * // => { 'a': 1, 'b': 2 } - */ - var defaults = baseRest(function(args) { - args.push(undefined, assignInDefaults); - return apply(assignInWith, undefined, args); - }); - - /** - * This method is like `_.defaults` except that it recursively assigns - * default properties. - * - * **Note:** This method mutates `object`. - * - * @static - * @memberOf _ - * @since 3.10.0 - * @category Object - * @param {Object} object The destination object. - * @param {...Object} [sources] The source objects. - * @returns {Object} Returns `object`. - * @see _.defaults - * @example - * - * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } }); - * // => { 'a': { 'b': 2, 'c': 3 } } - */ - var defaultsDeep = baseRest(function(args) { - args.push(undefined, mergeDefaults); - return apply(mergeWith, undefined, args); - }); - - /** - * This method is like `_.find` except that it returns the key of the first - * element `predicate` returns truthy for instead of the element itself. - * - * @static - * @memberOf _ - * @since 1.1.0 - * @category Object - * @param {Object} object The object to search. - * @param {Function} [predicate=_.identity] The function invoked per iteration. - * @returns {string|undefined} Returns the key of the matched element, - * else `undefined`. - * @example - * - * var users = { - * 'barney': { 'age': 36, 'active': true }, - * 'fred': { 'age': 40, 'active': false }, - * 'pebbles': { 'age': 1, 'active': true } - * }; - * - * _.findKey(users, function(o) { return o.age < 40; }); - * // => 'barney' (iteration order is not guaranteed) - * - * // The `_.matches` iteratee shorthand. - * _.findKey(users, { 'age': 1, 'active': true }); - * // => 'pebbles' - * - * // The `_.matchesProperty` iteratee shorthand. - * _.findKey(users, ['active', false]); - * // => 'fred' - * - * // The `_.property` iteratee shorthand. - * _.findKey(users, 'active'); - * // => 'barney' - */ - function findKey(object, predicate) { - return baseFindKey(object, getIteratee(predicate, 3), baseForOwn); - } - - /** - * This method is like `_.findKey` except that it iterates over elements of - * a collection in the opposite order. - * - * @static - * @memberOf _ - * @since 2.0.0 - * @category Object - * @param {Object} object The object to search. - * @param {Function} [predicate=_.identity] The function invoked per iteration. - * @returns {string|undefined} Returns the key of the matched element, - * else `undefined`. - * @example - * - * var users = { - * 'barney': { 'age': 36, 'active': true }, - * 'fred': { 'age': 40, 'active': false }, - * 'pebbles': { 'age': 1, 'active': true } - * }; - * - * _.findLastKey(users, function(o) { return o.age < 40; }); - * // => returns 'pebbles' assuming `_.findKey` returns 'barney' - * - * // The `_.matches` iteratee shorthand. - * _.findLastKey(users, { 'age': 36, 'active': true }); - * // => 'barney' - * - * // The `_.matchesProperty` iteratee shorthand. - * _.findLastKey(users, ['active', false]); - * // => 'fred' - * - * // The `_.property` iteratee shorthand. - * _.findLastKey(users, 'active'); - * // => 'pebbles' - */ - function findLastKey(object, predicate) { - return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight); - } - - /** - * Iterates over own and inherited enumerable string keyed properties of an - * object and invokes `iteratee` for each property. The iteratee is invoked - * with three arguments: (value, key, object). Iteratee functions may exit - * iteration early by explicitly returning `false`. - * - * @static - * @memberOf _ - * @since 0.3.0 - * @category Object - * @param {Object} object The object to iterate over. - * @param {Function} [iteratee=_.identity] The function invoked per iteration. - * @returns {Object} Returns `object`. - * @see _.forInRight - * @example - * - * function Foo() { - * this.a = 1; - * this.b = 2; - * } - * - * Foo.prototype.c = 3; - * - * _.forIn(new Foo, function(value, key) { - * console.log(key); - * }); - * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed). - */ - function forIn(object, iteratee) { - return object == null - ? object - : baseFor(object, getIteratee(iteratee, 3), keysIn); - } - - /** - * This method is like `_.forIn` except that it iterates over properties of - * `object` in the opposite order. - * - * @static - * @memberOf _ - * @since 2.0.0 - * @category Object - * @param {Object} object The object to iterate over. - * @param {Function} [iteratee=_.identity] The function invoked per iteration. - * @returns {Object} Returns `object`. - * @see _.forIn - * @example - * - * function Foo() { - * this.a = 1; - * this.b = 2; - * } - * - * Foo.prototype.c = 3; - * - * _.forInRight(new Foo, function(value, key) { - * console.log(key); - * }); - * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'. - */ - function forInRight(object, iteratee) { - return object == null - ? object - : baseForRight(object, getIteratee(iteratee, 3), keysIn); - } - - /** - * Iterates over own enumerable string keyed properties of an object and - * invokes `iteratee` for each property. The iteratee is invoked with three - * arguments: (value, key, object). Iteratee functions may exit iteration - * early by explicitly returning `false`. - * - * @static - * @memberOf _ - * @since 0.3.0 - * @category Object - * @param {Object} object The object to iterate over. - * @param {Function} [iteratee=_.identity] The function invoked per iteration. - * @returns {Object} Returns `object`. - * @see _.forOwnRight - * @example - * - * function Foo() { - * this.a = 1; - * this.b = 2; - * } - * - * Foo.prototype.c = 3; - * - * _.forOwn(new Foo, function(value, key) { - * console.log(key); - * }); - * // => Logs 'a' then 'b' (iteration order is not guaranteed). - */ - function forOwn(object, iteratee) { - return object && baseForOwn(object, getIteratee(iteratee, 3)); - } - - /** - * This method is like `_.forOwn` except that it iterates over properties of - * `object` in the opposite order. - * - * @static - * @memberOf _ - * @since 2.0.0 - * @category Object - * @param {Object} object The object to iterate over. - * @param {Function} [iteratee=_.identity] The function invoked per iteration. - * @returns {Object} Returns `object`. - * @see _.forOwn - * @example - * - * function Foo() { - * this.a = 1; - * this.b = 2; - * } - * - * Foo.prototype.c = 3; - * - * _.forOwnRight(new Foo, function(value, key) { - * console.log(key); - * }); - * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'. - */ - function forOwnRight(object, iteratee) { - return object && baseForOwnRight(object, getIteratee(iteratee, 3)); - } - - /** - * Creates an array of function property names from own enumerable properties - * of `object`. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Object - * @param {Object} object The object to inspect. - * @returns {Array} Returns the function names. - * @see _.functionsIn - * @example - * - * function Foo() { - * this.a = _.constant('a'); - * this.b = _.constant('b'); - * } - * - * Foo.prototype.c = _.constant('c'); - * - * _.functions(new Foo); - * // => ['a', 'b'] - */ - function functions(object) { - return object == null ? [] : baseFunctions(object, keys(object)); - } - - /** - * Creates an array of function property names from own and inherited - * enumerable properties of `object`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Object - * @param {Object} object The object to inspect. - * @returns {Array} Returns the function names. - * @see _.functions - * @example - * - * function Foo() { - * this.a = _.constant('a'); - * this.b = _.constant('b'); - * } - * - * Foo.prototype.c = _.constant('c'); - * - * _.functionsIn(new Foo); - * // => ['a', 'b', 'c'] - */ - function functionsIn(object) { - return object == null ? [] : baseFunctions(object, keysIn(object)); - } - - /** - * Gets the value at `path` of `object`. If the resolved value is - * `undefined`, the `defaultValue` is returned in its place. - * - * @static - * @memberOf _ - * @since 3.7.0 - * @category Object - * @param {Object} object The object to query. - * @param {Array|string} path The path of the property to get. - * @param {*} [defaultValue] The value returned for `undefined` resolved values. - * @returns {*} Returns the resolved value. - * @example - * - * var object = { 'a': [{ 'b': { 'c': 3 } }] }; - * - * _.get(object, 'a[0].b.c'); - * // => 3 - * - * _.get(object, ['a', '0', 'b', 'c']); - * // => 3 - * - * _.get(object, 'a.b.c', 'default'); - * // => 'default' - */ - function get(object, path, defaultValue) { - var result = object == null ? undefined : baseGet(object, path); - return result === undefined ? defaultValue : result; - } - - /** - * Checks if `path` is a direct property of `object`. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Object - * @param {Object} object The object to query. - * @param {Array|string} path The path to check. - * @returns {boolean} Returns `true` if `path` exists, else `false`. - * @example - * - * var object = { 'a': { 'b': 2 } }; - * var other = _.create({ 'a': _.create({ 'b': 2 }) }); - * - * _.has(object, 'a'); - * // => true - * - * _.has(object, 'a.b'); - * // => true - * - * _.has(object, ['a', 'b']); - * // => true - * - * _.has(other, 'a'); - * // => false - */ - function has(object, path) { - return object != null && hasPath(object, path, baseHas); - } - - /** - * Checks if `path` is a direct or inherited property of `object`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Object - * @param {Object} object The object to query. - * @param {Array|string} path The path to check. - * @returns {boolean} Returns `true` if `path` exists, else `false`. - * @example - * - * var object = _.create({ 'a': _.create({ 'b': 2 }) }); - * - * _.hasIn(object, 'a'); - * // => true - * - * _.hasIn(object, 'a.b'); - * // => true - * - * _.hasIn(object, ['a', 'b']); - * // => true - * - * _.hasIn(object, 'b'); - * // => false - */ - function hasIn(object, path) { - return object != null && hasPath(object, path, baseHasIn); - } - - /** - * Creates an object composed of the inverted keys and values of `object`. - * If `object` contains duplicate values, subsequent values overwrite - * property assignments of previous values. - * - * @static - * @memberOf _ - * @since 0.7.0 - * @category Object - * @param {Object} object The object to invert. - * @returns {Object} Returns the new inverted object. - * @example - * - * var object = { 'a': 1, 'b': 2, 'c': 1 }; - * - * _.invert(object); - * // => { '1': 'c', '2': 'b' } - */ - var invert = createInverter(function(result, value, key) { - result[value] = key; - }, constant(identity)); - - /** - * This method is like `_.invert` except that the inverted object is generated - * from the results of running each element of `object` thru `iteratee`. The - * corresponding inverted value of each inverted key is an array of keys - * responsible for generating the inverted value. The iteratee is invoked - * with one argument: (value). - * - * @static - * @memberOf _ - * @since 4.1.0 - * @category Object - * @param {Object} object The object to invert. - * @param {Function} [iteratee=_.identity] The iteratee invoked per element. - * @returns {Object} Returns the new inverted object. - * @example - * - * var object = { 'a': 1, 'b': 2, 'c': 1 }; - * - * _.invertBy(object); - * // => { '1': ['a', 'c'], '2': ['b'] } - * - * _.invertBy(object, function(value) { - * return 'group' + value; - * }); - * // => { 'group1': ['a', 'c'], 'group2': ['b'] } - */ - var invertBy = createInverter(function(result, value, key) { - if (hasOwnProperty.call(result, value)) { - result[value].push(key); - } else { - result[value] = [key]; - } - }, getIteratee); - - /** - * Invokes the method at `path` of `object`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Object - * @param {Object} object The object to query. - * @param {Array|string} path The path of the method to invoke. - * @param {...*} [args] The arguments to invoke the method with. - * @returns {*} Returns the result of the invoked method. - * @example - * - * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] }; - * - * _.invoke(object, 'a[0].b.c.slice', 1, 3); - * // => [2, 3] - */ - var invoke = baseRest(baseInvoke); - - /** - * 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; - } - - /** - * Creates an array of the own and inherited enumerable property names of `object`. - * - * **Note:** Non-object values are coerced to objects. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @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; - * - * _.keysIn(new Foo); - * // => ['a', 'b', 'c'] (iteration order is not guaranteed) - */ - function keysIn(object) { - var index = -1, - isProto = isPrototype(object), - props = baseKeysIn(object), - propsLength = props.length, - indexes = indexKeys(object), - skipIndexes = !!indexes, - result = indexes || [], - length = result.length; - - while (++index < propsLength) { - var key = props[index]; - if (!(skipIndexes && (key == 'length' || isIndex(key, length))) && - !(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) { - result.push(key); - } - } - return result; - } - - /** - * The opposite of `_.mapValues`; this method creates an object with the - * same values as `object` and keys generated by running each own enumerable - * string keyed property of `object` thru `iteratee`. The iteratee is invoked - * with three arguments: (value, key, object). - * - * @static - * @memberOf _ - * @since 3.8.0 - * @category Object - * @param {Object} object The object to iterate over. - * @param {Function} [iteratee=_.identity] The function invoked per iteration. - * @returns {Object} Returns the new mapped object. - * @see _.mapValues - * @example - * - * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) { - * return key + value; - * }); - * // => { 'a1': 1, 'b2': 2 } - */ - function mapKeys(object, iteratee) { - var result = {}; - iteratee = getIteratee(iteratee, 3); - - baseForOwn(object, function(value, key, object) { - result[iteratee(value, key, object)] = value; - }); - return result; - } - - /** - * Creates an object with the same keys as `object` and values generated - * by running each own enumerable string keyed property of `object` thru - * `iteratee`. The iteratee is invoked with three arguments: - * (value, key, object). - * - * @static - * @memberOf _ - * @since 2.4.0 - * @category Object - * @param {Object} object The object to iterate over. - * @param {Function} [iteratee=_.identity] The function invoked per iteration. - * @returns {Object} Returns the new mapped object. - * @see _.mapKeys - * @example - * - * var users = { - * 'fred': { 'user': 'fred', 'age': 40 }, - * 'pebbles': { 'user': 'pebbles', 'age': 1 } - * }; - * - * _.mapValues(users, function(o) { return o.age; }); - * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed) - * - * // The `_.property` iteratee shorthand. - * _.mapValues(users, 'age'); - * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed) - */ - function mapValues(object, iteratee) { - var result = {}; - iteratee = getIteratee(iteratee, 3); - - baseForOwn(object, function(value, key, object) { - result[key] = iteratee(value, key, object); - }); - return result; - } - - /** - * This method is like `_.assign` except that it recursively merges own and - * inherited enumerable string keyed properties of source objects into the - * destination object. Source properties that resolve to `undefined` are - * skipped if a destination value exists. Array and plain object properties - * are merged recursively. Other objects and value types are overridden by - * assignment. Source objects are applied from left to right. Subsequent - * sources overwrite property assignments of previous sources. - * - * **Note:** This method mutates `object`. - * - * @static - * @memberOf _ - * @since 0.5.0 - * @category Object - * @param {Object} object The destination object. - * @param {...Object} [sources] The source objects. - * @returns {Object} Returns `object`. - * @example - * - * var object = { - * 'a': [{ 'b': 2 }, { 'd': 4 }] - * }; - * - * var other = { - * 'a': [{ 'c': 3 }, { 'e': 5 }] - * }; - * - * _.merge(object, other); - * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] } - */ - var merge = createAssigner(function(object, source, srcIndex) { - baseMerge(object, source, srcIndex); - }); - - /** - * This method is like `_.merge` except that it accepts `customizer` which - * is invoked to produce the merged values of the destination and source - * properties. If `customizer` returns `undefined`, merging is handled by the - * method instead. The `customizer` is invoked with seven arguments: - * (objValue, srcValue, key, object, source, stack). - * - * **Note:** This method mutates `object`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Object - * @param {Object} object The destination object. - * @param {...Object} sources The source objects. - * @param {Function} customizer The function to customize assigned values. - * @returns {Object} Returns `object`. - * @example - * - * function customizer(objValue, srcValue) { - * if (_.isArray(objValue)) { - * return objValue.concat(srcValue); - * } - * } - * - * var object = { 'a': [1], 'b': [2] }; - * var other = { 'a': [3], 'b': [4] }; - * - * _.mergeWith(object, other, customizer); - * // => { 'a': [1, 3], 'b': [2, 4] } - */ - var mergeWith = createAssigner(function(object, source, srcIndex, customizer) { - baseMerge(object, source, srcIndex, customizer); - }); - - /** - * The opposite of `_.pick`; this method creates an object composed of the - * own and inherited enumerable string keyed properties of `object` that are - * not omitted. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Object - * @param {Object} object The source object. - * @param {...(string|string[])} [props] The property identifiers to omit. - * @returns {Object} Returns the new object. - * @example - * - * var object = { 'a': 1, 'b': '2', 'c': 3 }; - * - * _.omit(object, ['a', 'c']); - * // => { 'b': '2' } - */ - var omit = baseRest(function(object, props) { - if (object == null) { - return {}; - } - props = arrayMap(baseFlatten(props, 1), toKey); - return basePick(object, baseDifference(getAllKeysIn(object), props)); - }); - - /** - * The opposite of `_.pickBy`; this method creates an object composed of - * the own and inherited enumerable string keyed properties of `object` that - * `predicate` doesn't return truthy for. The predicate is invoked with two - * arguments: (value, key). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Object - * @param {Object} object The source object. - * @param {Function} [predicate=_.identity] The function invoked per property. - * @returns {Object} Returns the new object. - * @example - * - * var object = { 'a': 1, 'b': '2', 'c': 3 }; - * - * _.omitBy(object, _.isNumber); - * // => { 'b': '2' } - */ - function omitBy(object, predicate) { - return pickBy(object, negate(getIteratee(predicate))); - } - - /** - * Creates an object composed of the picked `object` properties. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Object - * @param {Object} object The source object. - * @param {...(string|string[])} [props] The property identifiers to pick. - * @returns {Object} Returns the new object. - * @example - * - * var object = { 'a': 1, 'b': '2', 'c': 3 }; - * - * _.pick(object, ['a', 'c']); - * // => { 'a': 1, 'c': 3 } - */ - var pick = baseRest(function(object, props) { - return object == null ? {} : basePick(object, arrayMap(baseFlatten(props, 1), toKey)); - }); - - /** - * Creates an object composed of the `object` properties `predicate` returns - * truthy for. The predicate is invoked with two arguments: (value, key). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Object - * @param {Object} object The source object. - * @param {Function} [predicate=_.identity] The function invoked per property. - * @returns {Object} Returns the new object. - * @example - * - * var object = { 'a': 1, 'b': '2', 'c': 3 }; - * - * _.pickBy(object, _.isNumber); - * // => { 'a': 1, 'c': 3 } - */ - function pickBy(object, predicate) { - return object == null ? {} : basePickBy(object, getAllKeysIn(object), getIteratee(predicate)); - } - - /** - * This method is like `_.get` except that if the resolved value is a - * function it's invoked with the `this` binding of its parent object and - * its result is returned. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Object - * @param {Object} object The object to query. - * @param {Array|string} path The path of the property to resolve. - * @param {*} [defaultValue] The value returned for `undefined` resolved values. - * @returns {*} Returns the resolved value. - * @example - * - * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] }; - * - * _.result(object, 'a[0].b.c1'); - * // => 3 - * - * _.result(object, 'a[0].b.c2'); - * // => 4 - * - * _.result(object, 'a[0].b.c3', 'default'); - * // => 'default' - * - * _.result(object, 'a[0].b.c3', _.constant('default')); - * // => 'default' - */ - function result(object, path, defaultValue) { - path = isKey(path, object) ? [path] : castPath(path); - - var index = -1, - length = path.length; - - // Ensure the loop is entered when path is empty. - if (!length) { - object = undefined; - length = 1; - } - while (++index < length) { - var value = object == null ? undefined : object[toKey(path[index])]; - if (value === undefined) { - index = length; - value = defaultValue; - } - object = isFunction(value) ? value.call(object) : value; - } - return object; - } - - /** - * Sets the value at `path` of `object`. If a portion of `path` doesn't exist, - * it's created. Arrays are created for missing index properties while objects - * are created for all other missing properties. Use `_.setWith` to customize - * `path` creation. - * - * **Note:** This method mutates `object`. - * - * @static - * @memberOf _ - * @since 3.7.0 - * @category Object - * @param {Object} object The object to modify. - * @param {Array|string} path The path of the property to set. - * @param {*} value The value to set. - * @returns {Object} Returns `object`. - * @example - * - * var object = { 'a': [{ 'b': { 'c': 3 } }] }; - * - * _.set(object, 'a[0].b.c', 4); - * console.log(object.a[0].b.c); - * // => 4 - * - * _.set(object, ['x', '0', 'y', 'z'], 5); - * console.log(object.x[0].y.z); - * // => 5 - */ - function set(object, path, value) { - return object == null ? object : baseSet(object, path, value); - } - - /** - * This method is like `_.set` except that it accepts `customizer` which is - * invoked to produce the objects of `path`. If `customizer` returns `undefined` - * path creation is handled by the method instead. The `customizer` is invoked - * with three arguments: (nsValue, key, nsObject). - * - * **Note:** This method mutates `object`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Object - * @param {Object} object The object to modify. - * @param {Array|string} path The path of the property to set. - * @param {*} value The value to set. - * @param {Function} [customizer] The function to customize assigned values. - * @returns {Object} Returns `object`. - * @example - * - * var object = {}; - * - * _.setWith(object, '[0][1]', 'a', Object); - * // => { '0': { '1': 'a' } } - */ - function setWith(object, path, value, customizer) { - customizer = typeof customizer == 'function' ? customizer : undefined; - return object == null ? object : baseSet(object, path, value, customizer); - } - - /** - * Creates an array of own enumerable string keyed-value pairs for `object` - * which can be consumed by `_.fromPairs`. If `object` is a map or set, its - * entries are returned. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @alias entries - * @category Object - * @param {Object} object The object to query. - * @returns {Array} Returns the key-value pairs. - * @example - * - * function Foo() { - * this.a = 1; - * this.b = 2; - * } - * - * Foo.prototype.c = 3; - * - * _.toPairs(new Foo); - * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed) - */ - var toPairs = createToPairs(keys); - - /** - * Creates an array of own and inherited enumerable string keyed-value pairs - * for `object` which can be consumed by `_.fromPairs`. If `object` is a map - * or set, its entries are returned. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @alias entriesIn - * @category Object - * @param {Object} object The object to query. - * @returns {Array} Returns the key-value pairs. - * @example - * - * function Foo() { - * this.a = 1; - * this.b = 2; - * } - * - * Foo.prototype.c = 3; - * - * _.toPairsIn(new Foo); - * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed) - */ - var toPairsIn = createToPairs(keysIn); - - /** - * An alternative to `_.reduce`; this method transforms `object` to a new - * `accumulator` object which is the result of running each of its own - * enumerable string keyed properties thru `iteratee`, with each invocation - * potentially mutating the `accumulator` object. If `accumulator` is not - * provided, a new object with the same `[[Prototype]]` will be used. The - * iteratee is invoked with four arguments: (accumulator, value, key, object). - * Iteratee functions may exit iteration early by explicitly returning `false`. - * - * @static - * @memberOf _ - * @since 1.3.0 - * @category Object - * @param {Object} object The object to iterate over. - * @param {Function} [iteratee=_.identity] The function invoked per iteration. - * @param {*} [accumulator] The custom accumulator value. - * @returns {*} Returns the accumulated value. - * @example - * - * _.transform([2, 3, 4], function(result, n) { - * result.push(n *= n); - * return n % 2 == 0; - * }, []); - * // => [4, 9] - * - * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) { - * (result[value] || (result[value] = [])).push(key); - * }, {}); - * // => { '1': ['a', 'c'], '2': ['b'] } - */ - function transform(object, iteratee, accumulator) { - var isArr = isArray(object) || isTypedArray(object); - iteratee = getIteratee(iteratee, 4); - - if (accumulator == null) { - if (isArr || isObject(object)) { - var Ctor = object.constructor; - if (isArr) { - accumulator = isArray(object) ? new Ctor : []; - } else { - accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {}; - } - } else { - accumulator = {}; - } - } - (isArr ? arrayEach : baseForOwn)(object, function(value, index, object) { - return iteratee(accumulator, value, index, object); - }); - return accumulator; - } - - /** - * Removes the property at `path` of `object`. - * - * **Note:** This method mutates `object`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Object - * @param {Object} object The object to modify. - * @param {Array|string} path The path of the property to unset. - * @returns {boolean} Returns `true` if the property is deleted, else `false`. - * @example - * - * var object = { 'a': [{ 'b': { 'c': 7 } }] }; - * _.unset(object, 'a[0].b.c'); - * // => true - * - * console.log(object); - * // => { 'a': [{ 'b': {} }] }; - * - * _.unset(object, ['a', '0', 'b', 'c']); - * // => true - * - * console.log(object); - * // => { 'a': [{ 'b': {} }] }; - */ - function unset(object, path) { - return object == null ? true : baseUnset(object, path); - } - - /** - * This method is like `_.set` except that accepts `updater` to produce the - * value to set. Use `_.updateWith` to customize `path` creation. The `updater` - * is invoked with one argument: (value). - * - * **Note:** This method mutates `object`. - * - * @static - * @memberOf _ - * @since 4.6.0 - * @category Object - * @param {Object} object The object to modify. - * @param {Array|string} path The path of the property to set. - * @param {Function} updater The function to produce the updated value. - * @returns {Object} Returns `object`. - * @example - * - * var object = { 'a': [{ 'b': { 'c': 3 } }] }; - * - * _.update(object, 'a[0].b.c', function(n) { return n * n; }); - * console.log(object.a[0].b.c); - * // => 9 - * - * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; }); - * console.log(object.x[0].y.z); - * // => 0 - */ - function update(object, path, updater) { - return object == null ? object : baseUpdate(object, path, castFunction(updater)); - } - - /** - * This method is like `_.update` except that it accepts `customizer` which is - * invoked to produce the objects of `path`. If `customizer` returns `undefined` - * path creation is handled by the method instead. The `customizer` is invoked - * with three arguments: (nsValue, key, nsObject). - * - * **Note:** This method mutates `object`. - * - * @static - * @memberOf _ - * @since 4.6.0 - * @category Object - * @param {Object} object The object to modify. - * @param {Array|string} path The path of the property to set. - * @param {Function} updater The function to produce the updated value. - * @param {Function} [customizer] The function to customize assigned values. - * @returns {Object} Returns `object`. - * @example - * - * var object = {}; - * - * _.updateWith(object, '[0][1]', _.constant('a'), Object); - * // => { '0': { '1': 'a' } } - */ - function updateWith(object, path, updater, customizer) { - customizer = typeof customizer == 'function' ? customizer : undefined; - return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer); - } - - /** - * Creates an array of the own enumerable string keyed property values of `object`. - * - * **Note:** Non-object values are coerced to objects. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Object - * @param {Object} object The object to query. - * @returns {Array} Returns the array of property values. - * @example - * - * function Foo() { - * this.a = 1; - * this.b = 2; - * } - * - * Foo.prototype.c = 3; - * - * _.values(new Foo); - * // => [1, 2] (iteration order is not guaranteed) - * - * _.values('hi'); - * // => ['h', 'i'] - */ - function values(object) { - return object ? baseValues(object, keys(object)) : []; - } - - /** - * Creates an array of the own and inherited enumerable string keyed property - * values of `object`. - * - * **Note:** Non-object values are coerced to objects. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Object - * @param {Object} object The object to query. - * @returns {Array} Returns the array of property values. - * @example - * - * function Foo() { - * this.a = 1; - * this.b = 2; - * } - * - * Foo.prototype.c = 3; - * - * _.valuesIn(new Foo); - * // => [1, 2, 3] (iteration order is not guaranteed) - */ - function valuesIn(object) { - return object == null ? [] : baseValues(object, keysIn(object)); - } - - /*------------------------------------------------------------------------*/ - - /** - * Clamps `number` within the inclusive `lower` and `upper` bounds. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Number - * @param {number} number The number to clamp. - * @param {number} [lower] The lower bound. - * @param {number} upper The upper bound. - * @returns {number} Returns the clamped number. - * @example - * - * _.clamp(-10, -5, 5); - * // => -5 - * - * _.clamp(10, -5, 5); - * // => 5 - */ - function clamp(number, lower, upper) { - if (upper === undefined) { - upper = lower; - lower = undefined; - } - if (upper !== undefined) { - upper = toNumber(upper); - upper = upper === upper ? upper : 0; - } - if (lower !== undefined) { - lower = toNumber(lower); - lower = lower === lower ? lower : 0; - } - return baseClamp(toNumber(number), lower, upper); - } - - /** - * Checks if `n` is between `start` and up to, but not including, `end`. If - * `end` is not specified, it's set to `start` with `start` then set to `0`. - * If `start` is greater than `end` the params are swapped to support - * negative ranges. - * - * @static - * @memberOf _ - * @since 3.3.0 - * @category Number - * @param {number} number The number to check. - * @param {number} [start=0] The start of the range. - * @param {number} end The end of the range. - * @returns {boolean} Returns `true` if `number` is in the range, else `false`. - * @see _.range, _.rangeRight - * @example - * - * _.inRange(3, 2, 4); - * // => true - * - * _.inRange(4, 8); - * // => true - * - * _.inRange(4, 2); - * // => false - * - * _.inRange(2, 2); - * // => false - * - * _.inRange(1.2, 2); - * // => true - * - * _.inRange(5.2, 4); - * // => false - * - * _.inRange(-3, -2, -6); - * // => true - */ - function inRange(number, start, end) { - start = toFinite(start); - if (end === undefined) { - end = start; - start = 0; - } else { - end = toFinite(end); - } - number = toNumber(number); - return baseInRange(number, start, end); - } - - /** - * Produces a random number between the inclusive `lower` and `upper` bounds. - * If only one argument is provided a number between `0` and the given number - * is returned. If `floating` is `true`, or either `lower` or `upper` are - * floats, a floating-point number is returned instead of an integer. - * - * **Note:** JavaScript follows the IEEE-754 standard for resolving - * floating-point values which can produce unexpected results. - * - * @static - * @memberOf _ - * @since 0.7.0 - * @category Number - * @param {number} [lower=0] The lower bound. - * @param {number} [upper=1] The upper bound. - * @param {boolean} [floating] Specify returning a floating-point number. - * @returns {number} Returns the random number. - * @example - * - * _.random(0, 5); - * // => an integer between 0 and 5 - * - * _.random(5); - * // => also an integer between 0 and 5 - * - * _.random(5, true); - * // => a floating-point number between 0 and 5 - * - * _.random(1.2, 5.2); - * // => a floating-point number between 1.2 and 5.2 - */ - function random(lower, upper, floating) { - if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) { - upper = floating = undefined; - } - if (floating === undefined) { - if (typeof upper == 'boolean') { - floating = upper; - upper = undefined; - } - else if (typeof lower == 'boolean') { - floating = lower; - lower = undefined; - } - } - if (lower === undefined && upper === undefined) { - lower = 0; - upper = 1; - } - else { - lower = toFinite(lower); - if (upper === undefined) { - upper = lower; - lower = 0; - } else { - upper = toFinite(upper); - } - } - if (lower > upper) { - var temp = lower; - lower = upper; - upper = temp; - } - if (floating || lower % 1 || upper % 1) { - var rand = nativeRandom(); - return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper); - } - return baseRandom(lower, upper); - } - - /*------------------------------------------------------------------------*/ - - /** - * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase). - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category String - * @param {string} [string=''] The string to convert. - * @returns {string} Returns the camel cased string. - * @example - * - * _.camelCase('Foo Bar'); - * // => 'fooBar' - * - * _.camelCase('--foo-bar--'); - * // => 'fooBar' - * - * _.camelCase('__FOO_BAR__'); - * // => 'fooBar' - */ - var camelCase = createCompounder(function(result, word, index) { - word = word.toLowerCase(); - return result + (index ? capitalize(word) : word); - }); - - /** - * Converts the first character of `string` to upper case and the remaining - * to lower case. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category String - * @param {string} [string=''] The string to capitalize. - * @returns {string} Returns the capitalized string. - * @example - * - * _.capitalize('FRED'); - * // => 'Fred' - */ - function capitalize(string) { - return upperFirst(toString(string).toLowerCase()); - } - - /** - * Deburrs `string` by converting - * [latin-1 supplementary letters](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table) - * to basic latin letters and removing - * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks). - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category String - * @param {string} [string=''] The string to deburr. - * @returns {string} Returns the deburred string. - * @example - * - * _.deburr('dรฉjร vu'); - * // => 'deja vu' - */ - function deburr(string) { - string = toString(string); - return string && string.replace(reLatin1, deburrLetter).replace(reComboMark, ''); - } - - /** - * Checks if `string` ends with the given target string. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category String - * @param {string} [string=''] The string to search. - * @param {string} [target] The string to search for. - * @param {number} [position=string.length] The position to search up to. - * @returns {boolean} Returns `true` if `string` ends with `target`, - * else `false`. - * @example - * - * _.endsWith('abc', 'c'); - * // => true - * - * _.endsWith('abc', 'b'); - * // => false - * - * _.endsWith('abc', 'b', 2); - * // => true - */ - function endsWith(string, target, position) { - string = toString(string); - target = baseToString(target); - - var length = string.length; - position = position === undefined - ? length - : baseClamp(toInteger(position), 0, length); - - var end = position; - position -= target.length; - return position >= 0 && string.slice(position, end) == target; - } - - /** - * Converts the characters "&", "<", ">", '"', "'", and "\`" in `string` to - * their corresponding HTML entities. - * - * **Note:** No other characters are escaped. To escape additional - * characters use a third-party library like [_he_](https://mths.be/he). - * - * Though the ">" character is escaped for symmetry, characters like - * ">" and "/" don't need escaping in HTML and have no special meaning - * unless they're part of a tag or unquoted attribute value. See - * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands) - * (under "semi-related fun fact") for more details. - * - * Backticks are escaped because in IE < 9, they can break out of - * attribute values or HTML comments. See [#59](https://html5sec.org/#59), - * [#102](https://html5sec.org/#102), [#108](https://html5sec.org/#108), and - * [#133](https://html5sec.org/#133) of the - * [HTML5 Security Cheatsheet](https://html5sec.org/) for more details. - * - * When working with HTML you should always - * [quote attribute values](http://wonko.com/post/html-escaping) to reduce - * XSS vectors. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category String - * @param {string} [string=''] The string to escape. - * @returns {string} Returns the escaped string. - * @example - * - * _.escape('fred, barney, & pebbles'); - * // => 'fred, barney, & pebbles' - */ - function escape(string) { - string = toString(string); - return (string && reHasUnescapedHtml.test(string)) - ? string.replace(reUnescapedHtml, escapeHtmlChar) - : string; - } - - /** - * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+", - * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category String - * @param {string} [string=''] The string to escape. - * @returns {string} Returns the escaped string. - * @example - * - * _.escapeRegExp('[lodash](https://lodash.com/)'); - * // => '\[lodash\]\(https://lodash\.com/\)' - */ - function escapeRegExp(string) { - string = toString(string); - return (string && reHasRegExpChar.test(string)) - ? string.replace(reRegExpChar, '\\$&') - : string; - } - - /** - * Converts `string` to - * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles). - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category String - * @param {string} [string=''] The string to convert. - * @returns {string} Returns the kebab cased string. - * @example - * - * _.kebabCase('Foo Bar'); - * // => 'foo-bar' - * - * _.kebabCase('fooBar'); - * // => 'foo-bar' - * - * _.kebabCase('__FOO_BAR__'); - * // => 'foo-bar' - */ - var kebabCase = createCompounder(function(result, word, index) { - return result + (index ? '-' : '') + word.toLowerCase(); - }); - - /** - * Converts `string`, as space separated words, to lower case. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category String - * @param {string} [string=''] The string to convert. - * @returns {string} Returns the lower cased string. - * @example - * - * _.lowerCase('--Foo-Bar--'); - * // => 'foo bar' - * - * _.lowerCase('fooBar'); - * // => 'foo bar' - * - * _.lowerCase('__FOO_BAR__'); - * // => 'foo bar' - */ - var lowerCase = createCompounder(function(result, word, index) { - return result + (index ? ' ' : '') + word.toLowerCase(); - }); - - /** - * Converts the first character of `string` to lower case. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category String - * @param {string} [string=''] The string to convert. - * @returns {string} Returns the converted string. - * @example - * - * _.lowerFirst('Fred'); - * // => 'fred' - * - * _.lowerFirst('FRED'); - * // => 'fRED' - */ - var lowerFirst = createCaseFirst('toLowerCase'); - - /** - * Pads `string` on the left and right sides if it's shorter than `length`. - * Padding characters are truncated if they can't be evenly divided by `length`. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category String - * @param {string} [string=''] The string to pad. - * @param {number} [length=0] The padding length. - * @param {string} [chars=' '] The string used as padding. - * @returns {string} Returns the padded string. - * @example - * - * _.pad('abc', 8); - * // => ' abc ' - * - * _.pad('abc', 8, '_-'); - * // => '_-abc_-_' - * - * _.pad('abc', 3); - * // => 'abc' - */ - function pad(string, length, chars) { - string = toString(string); - length = toInteger(length); - - var strLength = length ? stringSize(string) : 0; - if (!length || strLength >= length) { - return string; - } - var mid = (length - strLength) / 2; - return ( - createPadding(nativeFloor(mid), chars) + - string + - createPadding(nativeCeil(mid), chars) - ); - } - - /** - * Pads `string` on the right side if it's shorter than `length`. Padding - * characters are truncated if they exceed `length`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category String - * @param {string} [string=''] The string to pad. - * @param {number} [length=0] The padding length. - * @param {string} [chars=' '] The string used as padding. - * @returns {string} Returns the padded string. - * @example - * - * _.padEnd('abc', 6); - * // => 'abc ' - * - * _.padEnd('abc', 6, '_-'); - * // => 'abc_-_' - * - * _.padEnd('abc', 3); - * // => 'abc' - */ - function padEnd(string, length, chars) { - string = toString(string); - length = toInteger(length); - - var strLength = length ? stringSize(string) : 0; - return (length && strLength < length) - ? (string + createPadding(length - strLength, chars)) - : string; - } - - /** - * Pads `string` on the left side if it's shorter than `length`. Padding - * characters are truncated if they exceed `length`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category String - * @param {string} [string=''] The string to pad. - * @param {number} [length=0] The padding length. - * @param {string} [chars=' '] The string used as padding. - * @returns {string} Returns the padded string. - * @example - * - * _.padStart('abc', 6); - * // => ' abc' - * - * _.padStart('abc', 6, '_-'); - * // => '_-_abc' - * - * _.padStart('abc', 3); - * // => 'abc' - */ - function padStart(string, length, chars) { - string = toString(string); - length = toInteger(length); - - var strLength = length ? stringSize(string) : 0; - return (length && strLength < length) - ? (createPadding(length - strLength, chars) + string) - : string; - } - - /** - * Converts `string` to an integer of the specified radix. If `radix` is - * `undefined` or `0`, a `radix` of `10` is used unless `value` is a - * hexadecimal, in which case a `radix` of `16` is used. - * - * **Note:** This method aligns with the - * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`. - * - * @static - * @memberOf _ - * @since 1.1.0 - * @category String - * @param {string} string The string to convert. - * @param {number} [radix=10] The radix to interpret `value` by. - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. - * @returns {number} Returns the converted integer. - * @example - * - * _.parseInt('08'); - * // => 8 - * - * _.map(['6', '08', '10'], _.parseInt); - * // => [6, 8, 10] - */ - function parseInt(string, radix, guard) { - // Chrome fails to trim leading <BOM> whitespace characters. - // See https://bugs.chromium.org/p/v8/issues/detail?id=3109 for more details. - if (guard || radix == null) { - radix = 0; - } else if (radix) { - radix = +radix; - } - string = toString(string).replace(reTrim, ''); - return nativeParseInt(string, radix || (reHasHexPrefix.test(string) ? 16 : 10)); - } - - /** - * Repeats the given string `n` times. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category String - * @param {string} [string=''] The string to repeat. - * @param {number} [n=1] The number of times to repeat the string. - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. - * @returns {string} Returns the repeated string. - * @example - * - * _.repeat('*', 3); - * // => '***' - * - * _.repeat('abc', 2); - * // => 'abcabc' - * - * _.repeat('abc', 0); - * // => '' - */ - function repeat(string, n, guard) { - if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) { - n = 1; - } else { - n = toInteger(n); - } - return baseRepeat(toString(string), n); - } - - /** - * Replaces matches for `pattern` in `string` with `replacement`. - * - * **Note:** This method is based on - * [`String#replace`](https://mdn.io/String/replace). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category String - * @param {string} [string=''] The string to modify. - * @param {RegExp|string} pattern The pattern to replace. - * @param {Function|string} replacement The match replacement. - * @returns {string} Returns the modified string. - * @example - * - * _.replace('Hi Fred', 'Fred', 'Barney'); - * // => 'Hi Barney' - */ - function replace() { - var args = arguments, - string = toString(args[0]); - - return args.length < 3 ? string : nativeReplace.call(string, args[1], args[2]); - } - - /** - * Converts `string` to - * [snake case](https://en.wikipedia.org/wiki/Snake_case). - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category String - * @param {string} [string=''] The string to convert. - * @returns {string} Returns the snake cased string. - * @example - * - * _.snakeCase('Foo Bar'); - * // => 'foo_bar' - * - * _.snakeCase('fooBar'); - * // => 'foo_bar' - * - * _.snakeCase('--FOO-BAR--'); - * // => 'foo_bar' - */ - var snakeCase = createCompounder(function(result, word, index) { - return result + (index ? '_' : '') + word.toLowerCase(); - }); - - /** - * Splits `string` by `separator`. - * - * **Note:** This method is based on - * [`String#split`](https://mdn.io/String/split). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category String - * @param {string} [string=''] The string to split. - * @param {RegExp|string} separator The separator pattern to split by. - * @param {number} [limit] The length to truncate results to. - * @returns {Array} Returns the string segments. - * @example - * - * _.split('a-b-c', '-', 2); - * // => ['a', 'b'] - */ - function split(string, separator, limit) { - if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) { - separator = limit = undefined; - } - limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0; - if (!limit) { - return []; - } - string = toString(string); - if (string && ( - typeof separator == 'string' || - (separator != null && !isRegExp(separator)) - )) { - separator = baseToString(separator); - if (separator == '' && reHasComplexSymbol.test(string)) { - return castSlice(stringToArray(string), 0, limit); - } - } - return nativeSplit.call(string, separator, limit); - } - - /** - * Converts `string` to - * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage). - * - * @static - * @memberOf _ - * @since 3.1.0 - * @category String - * @param {string} [string=''] The string to convert. - * @returns {string} Returns the start cased string. - * @example - * - * _.startCase('--foo-bar--'); - * // => 'Foo Bar' - * - * _.startCase('fooBar'); - * // => 'Foo Bar' - * - * _.startCase('__FOO_BAR__'); - * // => 'FOO BAR' - */ - var startCase = createCompounder(function(result, word, index) { - return result + (index ? ' ' : '') + upperFirst(word); - }); - - /** - * Checks if `string` starts with the given target string. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category String - * @param {string} [string=''] The string to search. - * @param {string} [target] The string to search for. - * @param {number} [position=0] The position to search from. - * @returns {boolean} Returns `true` if `string` starts with `target`, - * else `false`. - * @example - * - * _.startsWith('abc', 'a'); - * // => true - * - * _.startsWith('abc', 'b'); - * // => false - * - * _.startsWith('abc', 'b', 1); - * // => true - */ - function startsWith(string, target, position) { - string = toString(string); - position = baseClamp(toInteger(position), 0, string.length); - target = baseToString(target); - return string.slice(position, position + target.length) == target; - } - - /** - * Creates a compiled template function that can interpolate data properties - * in "interpolate" delimiters, HTML-escape interpolated data properties in - * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data - * properties may be accessed as free variables in the template. If a setting - * object is given, it takes precedence over `_.templateSettings` values. - * - * **Note:** In the development build `_.template` utilizes - * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl) - * for easier debugging. - * - * For more information on precompiling templates see - * [lodash's custom builds documentation](https://lodash.com/custom-builds). - * - * For more information on Chrome extension sandboxes see - * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval). - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category String - * @param {string} [string=''] The template string. - * @param {Object} [options={}] The options object. - * @param {RegExp} [options.escape=_.templateSettings.escape] - * The HTML "escape" delimiter. - * @param {RegExp} [options.evaluate=_.templateSettings.evaluate] - * The "evaluate" delimiter. - * @param {Object} [options.imports=_.templateSettings.imports] - * An object to import into the template as free variables. - * @param {RegExp} [options.interpolate=_.templateSettings.interpolate] - * The "interpolate" delimiter. - * @param {string} [options.sourceURL='lodash.templateSources[n]'] - * The sourceURL of the compiled template. - * @param {string} [options.variable='obj'] - * The data object variable name. - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. - * @returns {Function} Returns the compiled template function. - * @example - * - * // Use the "interpolate" delimiter to create a compiled template. - * var compiled = _.template('hello <%= user %>!'); - * compiled({ 'user': 'fred' }); - * // => 'hello fred!' - * - * // Use the HTML "escape" delimiter to escape data property values. - * var compiled = _.template('<b><%- value %></b>'); - * compiled({ 'value': '<script>' }); - * // => '<b><script></b>' - * - * // Use the "evaluate" delimiter to execute JavaScript and generate HTML. - * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>'); - * compiled({ 'users': ['fred', 'barney'] }); - * // => '<li>fred</li><li>barney</li>' - * - * // Use the internal `print` function in "evaluate" delimiters. - * var compiled = _.template('<% print("hello " + user); %>!'); - * compiled({ 'user': 'barney' }); - * // => 'hello barney!' - * - * // Use the ES delimiter as an alternative to the default "interpolate" delimiter. - * var compiled = _.template('hello ${ user }!'); - * compiled({ 'user': 'pebbles' }); - * // => 'hello pebbles!' - * - * // Use backslashes to treat delimiters as plain text. - * var compiled = _.template('<%= "\\<%- value %\\>" %>'); - * compiled({ 'value': 'ignored' }); - * // => '<%- value %>' - * - * // Use the `imports` option to import `jQuery` as `jq`. - * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>'; - * var compiled = _.template(text, { 'imports': { 'jq': jQuery } }); - * compiled({ 'users': ['fred', 'barney'] }); - * // => '<li>fred</li><li>barney</li>' - * - * // Use the `sourceURL` option to specify a custom sourceURL for the template. - * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' }); - * compiled(data); - * // => Find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector. - * - * // Use the `variable` option to ensure a with-statement isn't used in the compiled template. - * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' }); - * compiled.source; - * // => function(data) { - * // var __t, __p = ''; - * // __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!'; - * // return __p; - * // } - * - * // Use custom template delimiters. - * _.templateSettings.interpolate = /{{([\s\S]+?)}}/g; - * var compiled = _.template('hello {{ user }}!'); - * compiled({ 'user': 'mustache' }); - * // => 'hello mustache!' - * - * // Use the `source` property to inline compiled templates for meaningful - * // line numbers in error messages and stack traces. - * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\ - * var JST = {\ - * "main": ' + _.template(mainText).source + '\ - * };\ - * '); - */ - function template(string, options, guard) { - // Based on John Resig's `tmpl` implementation - // (http://ejohn.org/blog/javascript-micro-templating/) - // and Laura Doktorova's doT.js (https://github.com/olado/doT). - var settings = lodash.templateSettings; - - if (guard && isIterateeCall(string, options, guard)) { - options = undefined; - } - string = toString(string); - options = assignInWith({}, options, settings, assignInDefaults); - - var imports = assignInWith({}, options.imports, settings.imports, assignInDefaults), - importsKeys = keys(imports), - importsValues = baseValues(imports, importsKeys); - - var isEscaping, - isEvaluating, - index = 0, - interpolate = options.interpolate || reNoMatch, - source = "__p += '"; - - // Compile the regexp to match each delimiter. - var reDelimiters = RegExp( - (options.escape || reNoMatch).source + '|' + - interpolate.source + '|' + - (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' + - (options.evaluate || reNoMatch).source + '|$' - , 'g'); - - // Use a sourceURL for easier debugging. - var sourceURL = '//# sourceURL=' + - ('sourceURL' in options - ? options.sourceURL - : ('lodash.templateSources[' + (++templateCounter) + ']') - ) + '\n'; - - string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) { - interpolateValue || (interpolateValue = esTemplateValue); - - // Escape characters that can't be included in string literals. - source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar); - - // Replace delimiters with snippets. - if (escapeValue) { - isEscaping = true; - source += "' +\n__e(" + escapeValue + ") +\n'"; - } - if (evaluateValue) { - isEvaluating = true; - source += "';\n" + evaluateValue + ";\n__p += '"; - } - if (interpolateValue) { - source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'"; - } - index = offset + match.length; - - // The JS engine embedded in Adobe products needs `match` returned in - // order to produce the correct `offset` value. - return match; - }); - - source += "';\n"; - - // If `variable` is not specified wrap a with-statement around the generated - // code to add the data object to the top of the scope chain. - var variable = options.variable; - if (!variable) { - source = 'with (obj) {\n' + source + '\n}\n'; - } - // Cleanup code by stripping empty strings. - source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source) - .replace(reEmptyStringMiddle, '$1') - .replace(reEmptyStringTrailing, '$1;'); - - // Frame code as the function body. - source = 'function(' + (variable || 'obj') + ') {\n' + - (variable - ? '' - : 'obj || (obj = {});\n' - ) + - "var __t, __p = ''" + - (isEscaping - ? ', __e = _.escape' - : '' - ) + - (isEvaluating - ? ', __j = Array.prototype.join;\n' + - "function print() { __p += __j.call(arguments, '') }\n" - : ';\n' - ) + - source + - 'return __p\n}'; - - var result = attempt(function() { - return Function(importsKeys, sourceURL + 'return ' + source) - .apply(undefined, importsValues); - }); - - // Provide the compiled function's source by its `toString` method or - // the `source` property as a convenience for inlining compiled templates. - result.source = source; - if (isError(result)) { - throw result; - } - return result; - } - - /** - * Converts `string`, as a whole, to lower case just like - * [String#toLowerCase](https://mdn.io/toLowerCase). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category String - * @param {string} [string=''] The string to convert. - * @returns {string} Returns the lower cased string. - * @example - * - * _.toLower('--Foo-Bar--'); - * // => '--foo-bar--' - * - * _.toLower('fooBar'); - * // => 'foobar' - * - * _.toLower('__FOO_BAR__'); - * // => '__foo_bar__' - */ - function toLower(value) { - return toString(value).toLowerCase(); - } - - /** - * Converts `string`, as a whole, to upper case just like - * [String#toUpperCase](https://mdn.io/toUpperCase). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category String - * @param {string} [string=''] The string to convert. - * @returns {string} Returns the upper cased string. - * @example - * - * _.toUpper('--foo-bar--'); - * // => '--FOO-BAR--' - * - * _.toUpper('fooBar'); - * // => 'FOOBAR' - * - * _.toUpper('__foo_bar__'); - * // => '__FOO_BAR__' - */ - function toUpper(value) { - return toString(value).toUpperCase(); - } - - /** - * 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, ''); - } - 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(''); - } - - /** - * Removes trailing whitespace or specified characters from `string`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @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 - * - * _.trimEnd(' abc '); - * // => ' abc' - * - * _.trimEnd('-_-abc-_-', '_-'); - * // => '-_-abc' - */ - function trimEnd(string, chars, guard) { - string = toString(string); - if (string && (guard || chars === undefined)) { - return string.replace(reTrimEnd, ''); - } - if (!string || !(chars = baseToString(chars))) { - return string; - } - var strSymbols = stringToArray(string), - end = charsEndIndex(strSymbols, stringToArray(chars)) + 1; - - return castSlice(strSymbols, 0, end).join(''); - } - - /** - * Removes leading whitespace or specified characters from `string`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @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 - * - * _.trimStart(' abc '); - * // => 'abc ' - * - * _.trimStart('-_-abc-_-', '_-'); - * // => 'abc-_-' - */ - function trimStart(string, chars, guard) { - string = toString(string); - if (string && (guard || chars === undefined)) { - return string.replace(reTrimStart, ''); - } - if (!string || !(chars = baseToString(chars))) { - return string; - } - var strSymbols = stringToArray(string), - start = charsStartIndex(strSymbols, stringToArray(chars)); - - return castSlice(strSymbols, start).join(''); - } - - /** - * Truncates `string` if it's longer than the given maximum string length. - * The last characters of the truncated string are replaced with the omission - * string which defaults to "...". - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category String - * @param {string} [string=''] The string to truncate. - * @param {Object} [options={}] The options object. - * @param {number} [options.length=30] The maximum string length. - * @param {string} [options.omission='...'] The string to indicate text is omitted. - * @param {RegExp|string} [options.separator] The separator pattern to truncate to. - * @returns {string} Returns the truncated string. - * @example - * - * _.truncate('hi-diddly-ho there, neighborino'); - * // => 'hi-diddly-ho there, neighbo...' - * - * _.truncate('hi-diddly-ho there, neighborino', { - * 'length': 24, - * 'separator': ' ' - * }); - * // => 'hi-diddly-ho there,...' - * - * _.truncate('hi-diddly-ho there, neighborino', { - * 'length': 24, - * 'separator': /,? +/ - * }); - * // => 'hi-diddly-ho there...' - * - * _.truncate('hi-diddly-ho there, neighborino', { - * 'omission': ' [...]' - * }); - * // => 'hi-diddly-ho there, neig [...]' - */ - function truncate(string, options) { - var length = DEFAULT_TRUNC_LENGTH, - omission = DEFAULT_TRUNC_OMISSION; - - if (isObject(options)) { - var separator = 'separator' in options ? options.separator : separator; - length = 'length' in options ? toInteger(options.length) : length; - omission = 'omission' in options ? baseToString(options.omission) : omission; - } - string = toString(string); - - var strLength = string.length; - if (reHasComplexSymbol.test(string)) { - var strSymbols = stringToArray(string); - strLength = strSymbols.length; - } - if (length >= strLength) { - return string; - } - var end = length - stringSize(omission); - if (end < 1) { - return omission; - } - var result = strSymbols - ? castSlice(strSymbols, 0, end).join('') - : string.slice(0, end); - - if (separator === undefined) { - return result + omission; - } - if (strSymbols) { - end += (result.length - end); - } - if (isRegExp(separator)) { - if (string.slice(end).search(separator)) { - var match, - substring = result; - - if (!separator.global) { - separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g'); - } - separator.lastIndex = 0; - while ((match = separator.exec(substring))) { - var newEnd = match.index; - } - result = result.slice(0, newEnd === undefined ? end : newEnd); - } - } else if (string.indexOf(baseToString(separator), end) != end) { - var index = result.lastIndexOf(separator); - if (index > -1) { - result = result.slice(0, index); - } - } - return result + omission; - } - - /** - * The inverse of `_.escape`; this method converts the HTML entities - * `&`, `<`, `>`, `"`, `'`, and ``` in `string` to - * their corresponding characters. - * - * **Note:** No other HTML entities are unescaped. To unescape additional - * HTML entities use a third-party library like [_he_](https://mths.be/he). - * - * @static - * @memberOf _ - * @since 0.6.0 - * @category String - * @param {string} [string=''] The string to unescape. - * @returns {string} Returns the unescaped string. - * @example - * - * _.unescape('fred, barney, & pebbles'); - * // => 'fred, barney, & pebbles' - */ - function unescape(string) { - string = toString(string); - return (string && reHasEscapedHtml.test(string)) - ? string.replace(reEscapedHtml, unescapeHtmlChar) - : string; - } - - /** - * Converts `string`, as space separated words, to upper case. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category String - * @param {string} [string=''] The string to convert. - * @returns {string} Returns the upper cased string. - * @example - * - * _.upperCase('--foo-bar'); - * // => 'FOO BAR' - * - * _.upperCase('fooBar'); - * // => 'FOO BAR' - * - * _.upperCase('__foo_bar__'); - * // => 'FOO BAR' - */ - var upperCase = createCompounder(function(result, word, index) { - return result + (index ? ' ' : '') + word.toUpperCase(); - }); - - /** - * Converts the first character of `string` to upper case. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category String - * @param {string} [string=''] The string to convert. - * @returns {string} Returns the converted string. - * @example - * - * _.upperFirst('fred'); - * // => 'Fred' - * - * _.upperFirst('FRED'); - * // => 'FRED' - */ - var upperFirst = createCaseFirst('toUpperCase'); - - /** - * Splits `string` into an array of its words. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category String - * @param {string} [string=''] The string to inspect. - * @param {RegExp|string} [pattern] The pattern to match words. - * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. - * @returns {Array} Returns the words of `string`. - * @example - * - * _.words('fred, barney, & pebbles'); - * // => ['fred', 'barney', 'pebbles'] - * - * _.words('fred, barney, & pebbles', /[^, ]+/g); - * // => ['fred', 'barney', '&', 'pebbles'] - */ - function words(string, pattern, guard) { - string = toString(string); - pattern = guard ? undefined : pattern; - - if (pattern === undefined) { - pattern = reHasComplexWord.test(string) ? reComplexWord : reBasicWord; - } - return string.match(pattern) || []; - } - - /*------------------------------------------------------------------------*/ - - /** - * Attempts to invoke `func`, returning either the result or the caught error - * object. Any additional arguments are provided to `func` when it's invoked. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Util - * @param {Function} func The function to attempt. - * @param {...*} [args] The arguments to invoke `func` with. - * @returns {*} Returns the `func` result or error object. - * @example - * - * // Avoid throwing errors for invalid selectors. - * var elements = _.attempt(function(selector) { - * return document.querySelectorAll(selector); - * }, '>_>'); - * - * if (_.isError(elements)) { - * elements = []; - * } - */ - var attempt = baseRest(function(func, args) { - try { - return apply(func, undefined, args); - } catch (e) { - return isError(e) ? e : new Error(e); - } - }); - - /** - * Binds methods of an object to the object itself, overwriting the existing - * method. - * - * **Note:** This method doesn't set the "length" property of bound functions. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Util - * @param {Object} object The object to bind and assign the bound methods to. - * @param {...(string|string[])} methodNames The object method names to bind. - * @returns {Object} Returns `object`. - * @example - * - * var view = { - * 'label': 'docs', - * 'click': function() { - * console.log('clicked ' + this.label); - * } - * }; - * - * _.bindAll(view, ['click']); - * jQuery(element).on('click', view.click); - * // => Logs 'clicked docs' when clicked. - */ - var bindAll = baseRest(function(object, methodNames) { - arrayEach(baseFlatten(methodNames, 1), function(key) { - key = toKey(key); - object[key] = bind(object[key], object); - }); - return object; - }); - - /** - * Creates a function that iterates over `pairs` and invokes the corresponding - * function of the first predicate to return truthy. The predicate-function - * pairs are invoked with the `this` binding and arguments of the created - * function. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Util - * @param {Array} pairs The predicate-function pairs. - * @returns {Function} Returns the new composite function. - * @example - * - * var func = _.cond([ - * [_.matches({ 'a': 1 }), _.constant('matches A')], - * [_.conforms({ 'b': _.isNumber }), _.constant('matches B')], - * [_.stubTrue, _.constant('no match')] - * ]); - * - * func({ 'a': 1, 'b': 2 }); - * // => 'matches A' - * - * func({ 'a': 0, 'b': 1 }); - * // => 'matches B' - * - * func({ 'a': '1', 'b': '2' }); - * // => 'no match' - */ - function cond(pairs) { - var length = pairs ? pairs.length : 0, - toIteratee = getIteratee(); - - pairs = !length ? [] : arrayMap(pairs, function(pair) { - if (typeof pair[1] != 'function') { - throw new TypeError(FUNC_ERROR_TEXT); - } - return [toIteratee(pair[0]), pair[1]]; - }); - - return baseRest(function(args) { - var index = -1; - while (++index < length) { - var pair = pairs[index]; - if (apply(pair[0], this, args)) { - return apply(pair[1], this, args); - } - } - }); - } - - /** - * Creates a function that invokes the predicate properties of `source` with - * the corresponding property values of a given object, returning `true` if - * all predicates return truthy, else `false`. - * - * **Note:** The created function is equivalent to `_.conformsTo` with - * `source` partially applied. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Util - * @param {Object} source The object of property predicates to conform to. - * @returns {Function} Returns the new spec function. - * @example - * - * var objects = [ - * { 'a': 2, 'b': 1 }, - * { 'a': 1, 'b': 2 } - * ]; - * - * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } })); - * // => [{ 'a': 1, 'b': 2 }] - */ - function conforms(source) { - return baseConforms(baseClone(source, true)); - } - - /** - * 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(value) { - return function() { - return value; - }; - } - - /** - * Checks `value` to determine whether a default value should be returned in - * its place. The `defaultValue` is returned if `value` is `NaN`, `null`, - * or `undefined`. - * - * @static - * @memberOf _ - * @since 4.14.0 - * @category Util - * @param {*} value The value to check. - * @param {*} defaultValue The default value. - * @returns {*} Returns the resolved value. - * @example - * - * _.defaultTo(1, 10); - * // => 1 - * - * _.defaultTo(undefined, 10); - * // => 10 - */ - function defaultTo(value, defaultValue) { - return (value == null || value !== value) ? defaultValue : value; - } - - /** - * Creates a function that returns the result of invoking the given functions - * with the `this` binding of the created function, where each successive - * invocation is supplied the return value of the previous. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Util - * @param {...(Function|Function[])} [funcs] The functions to invoke. - * @returns {Function} Returns the new composite function. - * @see _.flowRight - * @example - * - * function square(n) { - * return n * n; - * } - * - * var addSquare = _.flow([_.add, square]); - * addSquare(1, 2); - * // => 9 - */ - var flow = createFlow(); - - /** - * This method is like `_.flow` except that it creates a function that - * invokes the given functions from right to left. - * - * @static - * @since 3.0.0 - * @memberOf _ - * @category Util - * @param {...(Function|Function[])} [funcs] The functions to invoke. - * @returns {Function} Returns the new composite function. - * @see _.flow - * @example - * - * function square(n) { - * return n * n; - * } - * - * var addSquare = _.flowRight([square, _.add]); - * addSquare(1, 2); - * // => 9 - */ - var flowRight = createFlow(true); - - /** - * This method returns the first argument it receives. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Util - * @param {*} value Any value. - * @returns {*} Returns `value`. - * @example - * - * var object = { 'a': 1 }; - * - * console.log(_.identity(object) === object); - * // => true - */ - function identity(value) { - return value; - } - - /** - * Creates a function that invokes `func` with the arguments of the created - * function. If `func` is a property name, the created function returns the - * property value for a given element. If `func` is an array or object, the - * created function returns `true` for elements that contain the equivalent - * source properties, otherwise it returns `false`. - * - * @static - * @since 4.0.0 - * @memberOf _ - * @category Util - * @param {*} [func=_.identity] The value to convert to a callback. - * @returns {Function} Returns the callback. - * @example - * - * var users = [ - * { 'user': 'barney', 'age': 36, 'active': true }, - * { 'user': 'fred', 'age': 40, 'active': false } - * ]; - * - * // The `_.matches` iteratee shorthand. - * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true })); - * // => [{ 'user': 'barney', 'age': 36, 'active': true }] - * - * // The `_.matchesProperty` iteratee shorthand. - * _.filter(users, _.iteratee(['user', 'fred'])); - * // => [{ 'user': 'fred', 'age': 40 }] - * - * // The `_.property` iteratee shorthand. - * _.map(users, _.iteratee('user')); - * // => ['barney', 'fred'] - * - * // Create custom iteratee shorthands. - * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) { - * return !_.isRegExp(func) ? iteratee(func) : function(string) { - * return func.test(string); - * }; - * }); - * - * _.filter(['abc', 'def'], /ef/); - * // => ['def'] - */ - function iteratee(func) { - return baseIteratee(typeof func == 'function' ? func : baseClone(func, true)); - } - - /** - * Creates a function that performs a partial deep comparison between a given - * object and `source`, returning `true` if the given object has equivalent - * property values, else `false`. - * - * **Note:** The created function supports comparing the same values as - * `_.isEqual` is equivalent to `_.isMatch` with `source` partially applied. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Util - * @param {Object} source The object of property values to match. - * @returns {Function} Returns the new spec function. - * @example - * - * var objects = [ - * { 'a': 1, 'b': 2, 'c': 3 }, - * { 'a': 4, 'b': 5, 'c': 6 } - * ]; - * - * _.filter(objects, _.matches({ 'a': 4, 'c': 6 })); - * // => [{ 'a': 4, 'b': 5, 'c': 6 }] - */ - function matches(source) { - return baseMatches(baseClone(source, true)); - } - - /** - * Creates a function that performs a partial deep comparison between the - * value at `path` of a given object to `srcValue`, returning `true` if the - * object value is equivalent, else `false`. - * - * **Note:** This method supports comparing the same values as `_.isEqual`. - * - * @static - * @memberOf _ - * @since 3.2.0 - * @category Util - * @param {Array|string} path The path of the property to get. - * @param {*} srcValue The value to match. - * @returns {Function} Returns the new spec function. - * @example - * - * var objects = [ - * { 'a': 1, 'b': 2, 'c': 3 }, - * { 'a': 4, 'b': 5, 'c': 6 } - * ]; - * - * _.find(objects, _.matchesProperty('a', 4)); - * // => { 'a': 4, 'b': 5, 'c': 6 } - */ - function matchesProperty(path, srcValue) { - return baseMatchesProperty(path, baseClone(srcValue, true)); - } - - /** - * Creates a function that invokes the method at `path` of a given object. - * Any additional arguments are provided to the invoked method. - * - * @static - * @memberOf _ - * @since 3.7.0 - * @category Util - * @param {Array|string} path The path of the method to invoke. - * @param {...*} [args] The arguments to invoke the method with. - * @returns {Function} Returns the new invoker function. - * @example - * - * var objects = [ - * { 'a': { 'b': _.constant(2) } }, - * { 'a': { 'b': _.constant(1) } } - * ]; - * - * _.map(objects, _.method('a.b')); - * // => [2, 1] - * - * _.map(objects, _.method(['a', 'b'])); - * // => [2, 1] - */ - var method = baseRest(function(path, args) { - return function(object) { - return baseInvoke(object, path, args); - }; - }); - - /** - * The opposite of `_.method`; this method creates a function that invokes - * the method at a given path of `object`. Any additional arguments are - * provided to the invoked method. - * - * @static - * @memberOf _ - * @since 3.7.0 - * @category Util - * @param {Object} object The object to query. - * @param {...*} [args] The arguments to invoke the method with. - * @returns {Function} Returns the new invoker function. - * @example - * - * var array = _.times(3, _.constant), - * object = { 'a': array, 'b': array, 'c': array }; - * - * _.map(['a[2]', 'c[0]'], _.methodOf(object)); - * // => [2, 0] - * - * _.map([['a', '2'], ['c', '0']], _.methodOf(object)); - * // => [2, 0] - */ - var methodOf = baseRest(function(object, args) { - return function(path) { - return baseInvoke(object, path, args); - }; - }); - - /** - * Adds all own enumerable string keyed function properties of a source - * object to the destination object. If `object` is a function, then methods - * are added to its prototype as well. - * - * **Note:** Use `_.runInContext` to create a pristine `lodash` function to - * avoid conflicts caused by modifying the original. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Util - * @param {Function|Object} [object=lodash] The destination object. - * @param {Object} source The object of functions to add. - * @param {Object} [options={}] The options object. - * @param {boolean} [options.chain=true] Specify whether mixins are chainable. - * @returns {Function|Object} Returns `object`. - * @example - * - * function vowels(string) { - * return _.filter(string, function(v) { - * return /[aeiou]/i.test(v); - * }); - * } - * - * _.mixin({ 'vowels': vowels }); - * _.vowels('fred'); - * // => ['e'] - * - * _('fred').vowels().value(); - * // => ['e'] - * - * _.mixin({ 'vowels': vowels }, { 'chain': false }); - * _('fred').vowels(); - * // => ['e'] - */ - function mixin(object, source, options) { - var props = keys(source), - methodNames = baseFunctions(source, props); - - if (options == null && - !(isObject(source) && (methodNames.length || !props.length))) { - options = source; - source = object; - object = this; - methodNames = baseFunctions(source, keys(source)); - } - var chain = !(isObject(options) && 'chain' in options) || !!options.chain, - isFunc = isFunction(object); - - arrayEach(methodNames, function(methodName) { - var func = source[methodName]; - object[methodName] = func; - if (isFunc) { - object.prototype[methodName] = function() { - var chainAll = this.__chain__; - if (chain || chainAll) { - var result = object(this.__wrapped__), - actions = result.__actions__ = copyArray(this.__actions__); - - actions.push({ 'func': func, 'args': arguments, 'thisArg': object }); - result.__chain__ = chainAll; - return result; - } - return func.apply(object, arrayPush([this.value()], arguments)); - }; - } - }); - - return object; - } - - /** - * Reverts the `_` variable to its previous value and returns a reference to - * the `lodash` function. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Util - * @returns {Function} Returns the `lodash` function. - * @example - * - * var lodash = _.noConflict(); - */ - function noConflict() { - if (root._ === this) { - root._ = oldDash; - } - return this; - } - - /** - * This method returns `undefined`. - * - * @static - * @memberOf _ - * @since 2.3.0 - * @category Util - * @example - * - * _.times(2, _.noop); - * // => [undefined, undefined] - */ - function noop() { - // No operation performed. - } - - /** - * Creates a function that gets the argument at index `n`. If `n` is negative, - * the nth argument from the end is returned. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Util - * @param {number} [n=0] The index of the argument to return. - * @returns {Function} Returns the new pass-thru function. - * @example - * - * var func = _.nthArg(1); - * func('a', 'b', 'c', 'd'); - * // => 'b' - * - * var func = _.nthArg(-2); - * func('a', 'b', 'c', 'd'); - * // => 'c' - */ - function nthArg(n) { - n = toInteger(n); - return baseRest(function(args) { - return baseNth(args, n); - }); - } - - /** - * Creates a function that invokes `iteratees` with the arguments it receives - * and returns their results. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Util - * @param {...(Function|Function[])} [iteratees=[_.identity]] - * The iteratees to invoke. - * @returns {Function} Returns the new function. - * @example - * - * var func = _.over([Math.max, Math.min]); - * - * func(1, 2, 3, 4); - * // => [4, 1] - */ - var over = createOver(arrayMap); - - /** - * Creates a function that checks if **all** of the `predicates` return - * truthy when invoked with the arguments it receives. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Util - * @param {...(Function|Function[])} [predicates=[_.identity]] - * The predicates to check. - * @returns {Function} Returns the new function. - * @example - * - * var func = _.overEvery([Boolean, isFinite]); - * - * func('1'); - * // => true - * - * func(null); - * // => false - * - * func(NaN); - * // => false - */ - var overEvery = createOver(arrayEvery); - - /** - * Creates a function that checks if **any** of the `predicates` return - * truthy when invoked with the arguments it receives. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Util - * @param {...(Function|Function[])} [predicates=[_.identity]] - * The predicates to check. - * @returns {Function} Returns the new function. - * @example - * - * var func = _.overSome([Boolean, isFinite]); - * - * func('1'); - * // => true - * - * func(null); - * // => true - * - * func(NaN); - * // => false - */ - var overSome = createOver(arraySome); - - /** - * Creates a function that returns the value at `path` of a given object. - * - * @static - * @memberOf _ - * @since 2.4.0 - * @category Util - * @param {Array|string} path The path of the property to get. - * @returns {Function} Returns the new accessor function. - * @example - * - * var objects = [ - * { 'a': { 'b': 2 } }, - * { 'a': { 'b': 1 } } - * ]; - * - * _.map(objects, _.property('a.b')); - * // => [2, 1] - * - * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b'); - * // => [1, 2] - */ - function property(path) { - return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path); - } - - /** - * The opposite of `_.property`; this method creates a function that returns - * the value at a given path of `object`. - * - * @static - * @memberOf _ - * @since 3.0.0 - * @category Util - * @param {Object} object The object to query. - * @returns {Function} Returns the new accessor function. - * @example - * - * var array = [0, 1, 2], - * object = { 'a': array, 'b': array, 'c': array }; - * - * _.map(['a[2]', 'c[0]'], _.propertyOf(object)); - * // => [2, 0] - * - * _.map([['a', '2'], ['c', '0']], _.propertyOf(object)); - * // => [2, 0] - */ - function propertyOf(object) { - return function(path) { - return object == null ? undefined : baseGet(object, path); - }; - } - - /** - * Creates an array of numbers (positive and/or negative) progressing from - * `start` up to, but not including, `end`. A step of `-1` is used if a negative - * `start` is specified without an `end` or `step`. If `end` is not specified, - * it's set to `start` with `start` then set to `0`. - * - * **Note:** JavaScript follows the IEEE-754 standard for resolving - * floating-point values which can produce unexpected results. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Util - * @param {number} [start=0] The start of the range. - * @param {number} end The end of the range. - * @param {number} [step=1] The value to increment or decrement by. - * @returns {Array} Returns the range of numbers. - * @see _.inRange, _.rangeRight - * @example - * - * _.range(4); - * // => [0, 1, 2, 3] - * - * _.range(-4); - * // => [0, -1, -2, -3] - * - * _.range(1, 5); - * // => [1, 2, 3, 4] - * - * _.range(0, 20, 5); - * // => [0, 5, 10, 15] - * - * _.range(0, -4, -1); - * // => [0, -1, -2, -3] - * - * _.range(1, 4, 0); - * // => [1, 1, 1] - * - * _.range(0); - * // => [] - */ - var range = createRange(); - - /** - * This method is like `_.range` except that it populates values in - * descending order. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Util - * @param {number} [start=0] The start of the range. - * @param {number} end The end of the range. - * @param {number} [step=1] The value to increment or decrement by. - * @returns {Array} Returns the range of numbers. - * @see _.inRange, _.range - * @example - * - * _.rangeRight(4); - * // => [3, 2, 1, 0] - * - * _.rangeRight(-4); - * // => [-3, -2, -1, 0] - * - * _.rangeRight(1, 5); - * // => [4, 3, 2, 1] - * - * _.rangeRight(0, 20, 5); - * // => [15, 10, 5, 0] - * - * _.rangeRight(0, -4, -1); - * // => [-3, -2, -1, 0] - * - * _.rangeRight(1, 4, 0); - * // => [1, 1, 1] - * - * _.rangeRight(0); - * // => [] - */ - var rangeRight = createRange(true); - - /** - * This method returns a new empty array. - * - * @static - * @memberOf _ - * @since 4.13.0 - * @category Util - * @returns {Array} Returns the new empty array. - * @example - * - * var arrays = _.times(2, _.stubArray); - * - * console.log(arrays); - * // => [[], []] - * - * console.log(arrays[0] === arrays[1]); - * // => false - */ - function stubArray() { - return []; - } - - /** - * This method returns `false`. - * - * @static - * @memberOf _ - * @since 4.13.0 - * @category Util - * @returns {boolean} Returns `false`. - * @example - * - * _.times(2, _.stubFalse); - * // => [false, false] - */ - function stubFalse() { - return false; - } - - /** - * This method returns a new empty object. - * - * @static - * @memberOf _ - * @since 4.13.0 - * @category Util - * @returns {Object} Returns the new empty object. - * @example - * - * var objects = _.times(2, _.stubObject); - * - * console.log(objects); - * // => [{}, {}] - * - * console.log(objects[0] === objects[1]); - * // => false - */ - function stubObject() { - return {}; - } - - /** - * This method returns an empty string. - * - * @static - * @memberOf _ - * @since 4.13.0 - * @category Util - * @returns {string} Returns the empty string. - * @example - * - * _.times(2, _.stubString); - * // => ['', ''] - */ - function stubString() { - return ''; - } - - /** - * This method returns `true`. - * - * @static - * @memberOf _ - * @since 4.13.0 - * @category Util - * @returns {boolean} Returns `true`. - * @example - * - * _.times(2, _.stubTrue); - * // => [true, true] - */ - function stubTrue() { - return true; - } - - /** - * Invokes the iteratee `n` times, returning an array of the results of - * each invocation. The iteratee is invoked with one argument; (index). - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Util - * @param {number} n The number of times to invoke `iteratee`. - * @param {Function} [iteratee=_.identity] The function invoked per iteration. - * @returns {Array} Returns the array of results. - * @example - * - * _.times(3, String); - * // => ['0', '1', '2'] - * - * _.times(4, _.constant(0)); - * // => [0, 0, 0, 0] - */ - function times(n, iteratee) { - n = toInteger(n); - if (n < 1 || n > MAX_SAFE_INTEGER) { - return []; - } - var index = MAX_ARRAY_LENGTH, - length = nativeMin(n, MAX_ARRAY_LENGTH); - - iteratee = getIteratee(iteratee); - n -= MAX_ARRAY_LENGTH; - - var result = baseTimes(length, iteratee); - while (++index < n) { - iteratee(index); - } - return result; - } - - /** - * Converts `value` to a property path array. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Util - * @param {*} value The value to convert. - * @returns {Array} Returns the new property path array. - * @example - * - * _.toPath('a.b.c'); - * // => ['a', 'b', 'c'] - * - * _.toPath('a[0].b.c'); - * // => ['a', '0', 'b', 'c'] - */ - function toPath(value) { - if (isArray(value)) { - return arrayMap(value, toKey); - } - return isSymbol(value) ? [value] : copyArray(stringToPath(value)); - } - - /** - * Generates a unique ID. If `prefix` is given, the ID is appended to it. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Util - * @param {string} [prefix=''] The value to prefix the ID with. - * @returns {string} Returns the unique ID. - * @example - * - * _.uniqueId('contact_'); - * // => 'contact_104' - * - * _.uniqueId(); - * // => '105' - */ - function uniqueId(prefix) { - var id = ++idCounter; - return toString(prefix) + id; - } - - /*------------------------------------------------------------------------*/ - - /** - * Adds two numbers. - * - * @static - * @memberOf _ - * @since 3.4.0 - * @category Math - * @param {number} augend The first number in an addition. - * @param {number} addend The second number in an addition. - * @returns {number} Returns the total. - * @example - * - * _.add(6, 4); - * // => 10 - */ - var add = createMathOperation(function(augend, addend) { - return augend + addend; - }, 0); - - /** - * Computes `number` rounded up to `precision`. - * - * @static - * @memberOf _ - * @since 3.10.0 - * @category Math - * @param {number} number The number to round up. - * @param {number} [precision=0] The precision to round up to. - * @returns {number} Returns the rounded up number. - * @example - * - * _.ceil(4.006); - * // => 5 - * - * _.ceil(6.004, 2); - * // => 6.01 - * - * _.ceil(6040, -2); - * // => 6100 - */ - var ceil = createRound('ceil'); - - /** - * Divide two numbers. - * - * @static - * @memberOf _ - * @since 4.7.0 - * @category Math - * @param {number} dividend The first number in a division. - * @param {number} divisor The second number in a division. - * @returns {number} Returns the quotient. - * @example - * - * _.divide(6, 4); - * // => 1.5 - */ - var divide = createMathOperation(function(dividend, divisor) { - return dividend / divisor; - }, 1); - - /** - * Computes `number` rounded down to `precision`. - * - * @static - * @memberOf _ - * @since 3.10.0 - * @category Math - * @param {number} number The number to round down. - * @param {number} [precision=0] The precision to round down to. - * @returns {number} Returns the rounded down number. - * @example - * - * _.floor(4.006); - * // => 4 - * - * _.floor(0.046, 2); - * // => 0.04 - * - * _.floor(4060, -2); - * // => 4000 - */ - var floor = createRound('floor'); - - /** - * Computes the maximum value of `array`. If `array` is empty or falsey, - * `undefined` is returned. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Math - * @param {Array} array The array to iterate over. - * @returns {*} Returns the maximum value. - * @example - * - * _.max([4, 2, 8, 6]); - * // => 8 - * - * _.max([]); - * // => undefined - */ - function max(array) { - return (array && array.length) - ? baseExtremum(array, identity, baseGt) - : undefined; - } - - /** - * This method is like `_.max` except that it accepts `iteratee` which is - * invoked for each element in `array` to generate the criterion by which - * the value is ranked. The iteratee is invoked with one argument: (value). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Math - * @param {Array} array The array to iterate over. - * @param {Function} [iteratee=_.identity] The iteratee invoked per element. - * @returns {*} Returns the maximum value. - * @example - * - * var objects = [{ 'n': 1 }, { 'n': 2 }]; - * - * _.maxBy(objects, function(o) { return o.n; }); - * // => { 'n': 2 } - * - * // The `_.property` iteratee shorthand. - * _.maxBy(objects, 'n'); - * // => { 'n': 2 } - */ - function maxBy(array, iteratee) { - return (array && array.length) - ? baseExtremum(array, getIteratee(iteratee, 2), baseGt) - : undefined; - } - - /** - * Computes the mean of the values in `array`. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Math - * @param {Array} array The array to iterate over. - * @returns {number} Returns the mean. - * @example - * - * _.mean([4, 2, 8, 6]); - * // => 5 - */ - function mean(array) { - return baseMean(array, identity); - } - - /** - * This method is like `_.mean` except that it accepts `iteratee` which is - * invoked for each element in `array` to generate the value to be averaged. - * The iteratee is invoked with one argument: (value). - * - * @static - * @memberOf _ - * @since 4.7.0 - * @category Math - * @param {Array} array The array to iterate over. - * @param {Function} [iteratee=_.identity] The iteratee invoked per element. - * @returns {number} Returns the mean. - * @example - * - * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }]; - * - * _.meanBy(objects, function(o) { return o.n; }); - * // => 5 - * - * // The `_.property` iteratee shorthand. - * _.meanBy(objects, 'n'); - * // => 5 - */ - function meanBy(array, iteratee) { - return baseMean(array, getIteratee(iteratee, 2)); - } - - /** - * Computes the minimum value of `array`. If `array` is empty or falsey, - * `undefined` is returned. - * - * @static - * @since 0.1.0 - * @memberOf _ - * @category Math - * @param {Array} array The array to iterate over. - * @returns {*} Returns the minimum value. - * @example - * - * _.min([4, 2, 8, 6]); - * // => 2 - * - * _.min([]); - * // => undefined - */ - function min(array) { - return (array && array.length) - ? baseExtremum(array, identity, baseLt) - : undefined; - } - - /** - * This method is like `_.min` except that it accepts `iteratee` which is - * invoked for each element in `array` to generate the criterion by which - * the value is ranked. The iteratee is invoked with one argument: (value). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Math - * @param {Array} array The array to iterate over. - * @param {Function} [iteratee=_.identity] The iteratee invoked per element. - * @returns {*} Returns the minimum value. - * @example - * - * var objects = [{ 'n': 1 }, { 'n': 2 }]; - * - * _.minBy(objects, function(o) { return o.n; }); - * // => { 'n': 1 } - * - * // The `_.property` iteratee shorthand. - * _.minBy(objects, 'n'); - * // => { 'n': 1 } - */ - function minBy(array, iteratee) { - return (array && array.length) - ? baseExtremum(array, getIteratee(iteratee, 2), baseLt) - : undefined; - } - - /** - * Multiply two numbers. - * - * @static - * @memberOf _ - * @since 4.7.0 - * @category Math - * @param {number} multiplier The first number in a multiplication. - * @param {number} multiplicand The second number in a multiplication. - * @returns {number} Returns the product. - * @example - * - * _.multiply(6, 4); - * // => 24 - */ - var multiply = createMathOperation(function(multiplier, multiplicand) { - return multiplier * multiplicand; - }, 1); - - /** - * Computes `number` rounded to `precision`. - * - * @static - * @memberOf _ - * @since 3.10.0 - * @category Math - * @param {number} number The number to round. - * @param {number} [precision=0] The precision to round to. - * @returns {number} Returns the rounded number. - * @example - * - * _.round(4.006); - * // => 4 - * - * _.round(4.006, 2); - * // => 4.01 - * - * _.round(4060, -2); - * // => 4100 - */ - var round = createRound('round'); - - /** - * Subtract two numbers. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Math - * @param {number} minuend The first number in a subtraction. - * @param {number} subtrahend The second number in a subtraction. - * @returns {number} Returns the difference. - * @example - * - * _.subtract(6, 4); - * // => 2 - */ - var subtract = createMathOperation(function(minuend, subtrahend) { - return minuend - subtrahend; - }, 0); - - /** - * Computes the sum of the values in `array`. - * - * @static - * @memberOf _ - * @since 3.4.0 - * @category Math - * @param {Array} array The array to iterate over. - * @returns {number} Returns the sum. - * @example - * - * _.sum([4, 2, 8, 6]); - * // => 20 - */ - function sum(array) { - return (array && array.length) - ? baseSum(array, identity) - : 0; - } - - /** - * This method is like `_.sum` except that it accepts `iteratee` which is - * invoked for each element in `array` to generate the value to be summed. - * The iteratee is invoked with one argument: (value). - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Math - * @param {Array} array The array to iterate over. - * @param {Function} [iteratee=_.identity] The iteratee invoked per element. - * @returns {number} Returns the sum. - * @example - * - * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }]; - * - * _.sumBy(objects, function(o) { return o.n; }); - * // => 20 - * - * // The `_.property` iteratee shorthand. - * _.sumBy(objects, 'n'); - * // => 20 - */ - function sumBy(array, iteratee) { - return (array && array.length) - ? baseSum(array, getIteratee(iteratee, 2)) - : 0; - } - - /*------------------------------------------------------------------------*/ - - // Add methods that return wrapped values in chain sequences. - lodash.after = after; - lodash.ary = ary; - lodash.assign = assign; - lodash.assignIn = assignIn; - lodash.assignInWith = assignInWith; - lodash.assignWith = assignWith; - lodash.at = at; - lodash.before = before; - lodash.bind = bind; - lodash.bindAll = bindAll; - lodash.bindKey = bindKey; - lodash.castArray = castArray; - lodash.chain = chain; - lodash.chunk = chunk; - lodash.compact = compact; - lodash.concat = concat; - lodash.cond = cond; - lodash.conforms = conforms; - lodash.constant = constant; - lodash.countBy = countBy; - lodash.create = create; - lodash.curry = curry; - lodash.curryRight = curryRight; - lodash.debounce = debounce; - lodash.defaults = defaults; - lodash.defaultsDeep = defaultsDeep; - lodash.defer = defer; - lodash.delay = delay; - lodash.difference = difference; - lodash.differenceBy = differenceBy; - lodash.differenceWith = differenceWith; - lodash.drop = drop; - lodash.dropRight = dropRight; - lodash.dropRightWhile = dropRightWhile; - lodash.dropWhile = dropWhile; - lodash.fill = fill; - lodash.filter = filter; - lodash.flatMap = flatMap; - lodash.flatMapDeep = flatMapDeep; - lodash.flatMapDepth = flatMapDepth; - lodash.flatten = flatten; - lodash.flattenDeep = flattenDeep; - lodash.flattenDepth = flattenDepth; - lodash.flip = flip; - lodash.flow = flow; - lodash.flowRight = flowRight; - lodash.fromPairs = fromPairs; - lodash.functions = functions; - lodash.functionsIn = functionsIn; - lodash.groupBy = groupBy; - lodash.initial = initial; - lodash.intersection = intersection; - lodash.intersectionBy = intersectionBy; - lodash.intersectionWith = intersectionWith; - lodash.invert = invert; - lodash.invertBy = invertBy; - lodash.invokeMap = invokeMap; - lodash.iteratee = iteratee; - lodash.keyBy = keyBy; - lodash.keys = keys; - lodash.keysIn = keysIn; - lodash.map = map; - lodash.mapKeys = mapKeys; - lodash.mapValues = mapValues; - lodash.matches = matches; - lodash.matchesProperty = matchesProperty; - lodash.memoize = memoize; - lodash.merge = merge; - lodash.mergeWith = mergeWith; - lodash.method = method; - lodash.methodOf = methodOf; - lodash.mixin = mixin; - lodash.negate = negate; - lodash.nthArg = nthArg; - lodash.omit = omit; - lodash.omitBy = omitBy; - lodash.once = once; - lodash.orderBy = orderBy; - lodash.over = over; - lodash.overArgs = overArgs; - lodash.overEvery = overEvery; - lodash.overSome = overSome; - lodash.partial = partial; - lodash.partialRight = partialRight; - lodash.partition = partition; - lodash.pick = pick; - lodash.pickBy = pickBy; - lodash.property = property; - lodash.propertyOf = propertyOf; - lodash.pull = pull; - lodash.pullAll = pullAll; - lodash.pullAllBy = pullAllBy; - lodash.pullAllWith = pullAllWith; - lodash.pullAt = pullAt; - lodash.range = range; - lodash.rangeRight = rangeRight; - lodash.rearg = rearg; - lodash.reject = reject; - lodash.remove = remove; - lodash.rest = rest; - lodash.reverse = reverse; - lodash.sampleSize = sampleSize; - lodash.set = set; - lodash.setWith = setWith; - lodash.shuffle = shuffle; - lodash.slice = slice; - lodash.sortBy = sortBy; - lodash.sortedUniq = sortedUniq; - lodash.sortedUniqBy = sortedUniqBy; - lodash.split = split; - lodash.spread = spread; - lodash.tail = tail; - lodash.take = take; - lodash.takeRight = takeRight; - lodash.takeRightWhile = takeRightWhile; - lodash.takeWhile = takeWhile; - lodash.tap = tap; - lodash.throttle = throttle; - lodash.thru = thru; - lodash.toArray = toArray; - lodash.toPairs = toPairs; - lodash.toPairsIn = toPairsIn; - lodash.toPath = toPath; - lodash.toPlainObject = toPlainObject; - lodash.transform = transform; - lodash.unary = unary; - lodash.union = union; - lodash.unionBy = unionBy; - lodash.unionWith = unionWith; - lodash.uniq = uniq; - lodash.uniqBy = uniqBy; - lodash.uniqWith = uniqWith; - lodash.unset = unset; - lodash.unzip = unzip; - lodash.unzipWith = unzipWith; - lodash.update = update; - lodash.updateWith = updateWith; - lodash.values = values; - lodash.valuesIn = valuesIn; - lodash.without = without; - lodash.words = words; - lodash.wrap = wrap; - lodash.xor = xor; - lodash.xorBy = xorBy; - lodash.xorWith = xorWith; - lodash.zip = zip; - lodash.zipObject = zipObject; - lodash.zipObjectDeep = zipObjectDeep; - lodash.zipWith = zipWith; - - // Add aliases. - lodash.entries = toPairs; - lodash.entriesIn = toPairsIn; - lodash.extend = assignIn; - lodash.extendWith = assignInWith; - - // Add methods to `lodash.prototype`. - mixin(lodash, lodash); - - /*------------------------------------------------------------------------*/ - - // Add methods that return unwrapped values in chain sequences. - lodash.add = add; - lodash.attempt = attempt; - lodash.camelCase = camelCase; - lodash.capitalize = capitalize; - lodash.ceil = ceil; - lodash.clamp = clamp; - lodash.clone = clone; - lodash.cloneDeep = cloneDeep; - lodash.cloneDeepWith = cloneDeepWith; - lodash.cloneWith = cloneWith; - lodash.conformsTo = conformsTo; - lodash.deburr = deburr; - lodash.defaultTo = defaultTo; - lodash.divide = divide; - lodash.endsWith = endsWith; - lodash.eq = eq; - lodash.escape = escape; - lodash.escapeRegExp = escapeRegExp; - lodash.every = every; - lodash.find = find; - lodash.findIndex = findIndex; - lodash.findKey = findKey; - lodash.findLast = findLast; - lodash.findLastIndex = findLastIndex; - lodash.findLastKey = findLastKey; - lodash.floor = floor; - lodash.forEach = forEach; - lodash.forEachRight = forEachRight; - lodash.forIn = forIn; - lodash.forInRight = forInRight; - lodash.forOwn = forOwn; - lodash.forOwnRight = forOwnRight; - lodash.get = get; - lodash.gt = gt; - lodash.gte = gte; - lodash.has = has; - lodash.hasIn = hasIn; - lodash.head = head; - lodash.identity = identity; - lodash.includes = includes; - lodash.indexOf = indexOf; - lodash.inRange = inRange; - lodash.invoke = invoke; - lodash.isArguments = isArguments; - lodash.isArray = isArray; - lodash.isArrayBuffer = isArrayBuffer; - lodash.isArrayLike = isArrayLike; - lodash.isArrayLikeObject = isArrayLikeObject; - lodash.isBoolean = isBoolean; - lodash.isBuffer = isBuffer; - lodash.isDate = isDate; - lodash.isElement = isElement; - lodash.isEmpty = isEmpty; - lodash.isEqual = isEqual; - lodash.isEqualWith = isEqualWith; - lodash.isError = isError; - lodash.isFinite = isFinite; - lodash.isFunction = isFunction; - lodash.isInteger = isInteger; - lodash.isLength = isLength; - lodash.isMap = isMap; - lodash.isMatch = isMatch; - lodash.isMatchWith = isMatchWith; - lodash.isNaN = isNaN; - lodash.isNative = isNative; - lodash.isNil = isNil; - lodash.isNull = isNull; - lodash.isNumber = isNumber; - lodash.isObject = isObject; - lodash.isObjectLike = isObjectLike; - lodash.isPlainObject = isPlainObject; - lodash.isRegExp = isRegExp; - lodash.isSafeInteger = isSafeInteger; - lodash.isSet = isSet; - lodash.isString = isString; - lodash.isSymbol = isSymbol; - lodash.isTypedArray = isTypedArray; - lodash.isUndefined = isUndefined; - lodash.isWeakMap = isWeakMap; - lodash.isWeakSet = isWeakSet; - lodash.join = join; - lodash.kebabCase = kebabCase; - lodash.last = last; - lodash.lastIndexOf = lastIndexOf; - lodash.lowerCase = lowerCase; - lodash.lowerFirst = lowerFirst; - lodash.lt = lt; - lodash.lte = lte; - lodash.max = max; - lodash.maxBy = maxBy; - lodash.mean = mean; - lodash.meanBy = meanBy; - lodash.min = min; - lodash.minBy = minBy; - lodash.stubArray = stubArray; - lodash.stubFalse = stubFalse; - lodash.stubObject = stubObject; - lodash.stubString = stubString; - lodash.stubTrue = stubTrue; - lodash.multiply = multiply; - lodash.nth = nth; - lodash.noConflict = noConflict; - lodash.noop = noop; - lodash.now = now; - lodash.pad = pad; - lodash.padEnd = padEnd; - lodash.padStart = padStart; - lodash.parseInt = parseInt; - lodash.random = random; - lodash.reduce = reduce; - lodash.reduceRight = reduceRight; - lodash.repeat = repeat; - lodash.replace = replace; - lodash.result = result; - lodash.round = round; - lodash.runInContext = runInContext; - lodash.sample = sample; - lodash.size = size; - lodash.snakeCase = snakeCase; - lodash.some = some; - lodash.sortedIndex = sortedIndex; - lodash.sortedIndexBy = sortedIndexBy; - lodash.sortedIndexOf = sortedIndexOf; - lodash.sortedLastIndex = sortedLastIndex; - lodash.sortedLastIndexBy = sortedLastIndexBy; - lodash.sortedLastIndexOf = sortedLastIndexOf; - lodash.startCase = startCase; - lodash.startsWith = startsWith; - lodash.subtract = subtract; - lodash.sum = sum; - lodash.sumBy = sumBy; - lodash.template = template; - lodash.times = times; - lodash.toFinite = toFinite; - lodash.toInteger = toInteger; - lodash.toLength = toLength; - lodash.toLower = toLower; - lodash.toNumber = toNumber; - lodash.toSafeInteger = toSafeInteger; - lodash.toString = toString; - lodash.toUpper = toUpper; - lodash.trim = trim; - lodash.trimEnd = trimEnd; - lodash.trimStart = trimStart; - lodash.truncate = truncate; - lodash.unescape = unescape; - lodash.uniqueId = uniqueId; - lodash.upperCase = upperCase; - lodash.upperFirst = upperFirst; - - // Add aliases. - lodash.each = forEach; - lodash.eachRight = forEachRight; - lodash.first = head; - - mixin(lodash, (function() { - var source = {}; - baseForOwn(lodash, function(func, methodName) { - if (!hasOwnProperty.call(lodash.prototype, methodName)) { - source[methodName] = func; - } - }); - return source; - }()), { 'chain': false }); - - /*------------------------------------------------------------------------*/ - - /** - * The semantic version number. - * - * @static - * @memberOf _ - * @type {string} - */ - lodash.VERSION = VERSION; - - // Assign default placeholders. - arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) { - lodash[methodName].placeholder = lodash; - }); - - // Add `LazyWrapper` methods for `_.drop` and `_.take` variants. - arrayEach(['drop', 'take'], function(methodName, index) { - LazyWrapper.prototype[methodName] = function(n) { - var filtered = this.__filtered__; - if (filtered && !index) { - return new LazyWrapper(this); - } - n = n === undefined ? 1 : nativeMax(toInteger(n), 0); - - var result = this.clone(); - if (filtered) { - result.__takeCount__ = nativeMin(n, result.__takeCount__); - } else { - result.__views__.push({ - 'size': nativeMin(n, MAX_ARRAY_LENGTH), - 'type': methodName + (result.__dir__ < 0 ? 'Right' : '') - }); - } - return result; - }; - - LazyWrapper.prototype[methodName + 'Right'] = function(n) { - return this.reverse()[methodName](n).reverse(); - }; - }); - - // Add `LazyWrapper` methods that accept an `iteratee` value. - arrayEach(['filter', 'map', 'takeWhile'], function(methodName, index) { - var type = index + 1, - isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG; - - LazyWrapper.prototype[methodName] = function(iteratee) { - var result = this.clone(); - result.__iteratees__.push({ - 'iteratee': getIteratee(iteratee, 3), - 'type': type - }); - result.__filtered__ = result.__filtered__ || isFilter; - return result; - }; - }); - - // Add `LazyWrapper` methods for `_.head` and `_.last`. - arrayEach(['head', 'last'], function(methodName, index) { - var takeName = 'take' + (index ? 'Right' : ''); - - LazyWrapper.prototype[methodName] = function() { - return this[takeName](1).value()[0]; - }; - }); - - // Add `LazyWrapper` methods for `_.initial` and `_.tail`. - arrayEach(['initial', 'tail'], function(methodName, index) { - var dropName = 'drop' + (index ? '' : 'Right'); - - LazyWrapper.prototype[methodName] = function() { - return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1); - }; - }); - - LazyWrapper.prototype.compact = function() { - return this.filter(identity); - }; - - LazyWrapper.prototype.find = function(predicate) { - return this.filter(predicate).head(); - }; - - LazyWrapper.prototype.findLast = function(predicate) { - return this.reverse().find(predicate); - }; - - LazyWrapper.prototype.invokeMap = baseRest(function(path, args) { - if (typeof path == 'function') { - return new LazyWrapper(this); - } - return this.map(function(value) { - return baseInvoke(value, path, args); - }); - }); - - LazyWrapper.prototype.reject = function(predicate) { - return this.filter(negate(getIteratee(predicate))); - }; - - LazyWrapper.prototype.slice = function(start, end) { - start = toInteger(start); - - var result = this; - if (result.__filtered__ && (start > 0 || end < 0)) { - return new LazyWrapper(result); - } - if (start < 0) { - result = result.takeRight(-start); - } else if (start) { - result = result.drop(start); - } - if (end !== undefined) { - end = toInteger(end); - result = end < 0 ? result.dropRight(-end) : result.take(end - start); - } - return result; - }; - - LazyWrapper.prototype.takeRightWhile = function(predicate) { - return this.reverse().takeWhile(predicate).reverse(); - }; - - LazyWrapper.prototype.toArray = function() { - return this.take(MAX_ARRAY_LENGTH); - }; - - // Add `LazyWrapper` methods to `lodash.prototype`. - baseForOwn(LazyWrapper.prototype, function(func, methodName) { - var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName), - isTaker = /^(?:head|last)$/.test(methodName), - lodashFunc = lodash[isTaker ? ('take' + (methodName == 'last' ? 'Right' : '')) : methodName], - retUnwrapped = isTaker || /^find/.test(methodName); - - if (!lodashFunc) { - return; - } - lodash.prototype[methodName] = function() { - var value = this.__wrapped__, - args = isTaker ? [1] : arguments, - isLazy = value instanceof LazyWrapper, - iteratee = args[0], - useLazy = isLazy || isArray(value); - - var interceptor = function(value) { - var result = lodashFunc.apply(lodash, arrayPush([value], args)); - return (isTaker && chainAll) ? result[0] : result; - }; - - if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) { - // Avoid lazy use if the iteratee has a "length" value other than `1`. - isLazy = useLazy = false; - } - var chainAll = this.__chain__, - isHybrid = !!this.__actions__.length, - isUnwrapped = retUnwrapped && !chainAll, - onlyLazy = isLazy && !isHybrid; - - if (!retUnwrapped && useLazy) { - value = onlyLazy ? value : new LazyWrapper(this); - var result = func.apply(value, args); - result.__actions__.push({ 'func': thru, 'args': [interceptor], 'thisArg': undefined }); - return new LodashWrapper(result, chainAll); - } - if (isUnwrapped && onlyLazy) { - return func.apply(this, args); - } - result = this.thru(interceptor); - return isUnwrapped ? (isTaker ? result.value()[0] : result.value()) : result; - }; - }); - - // Add `Array` methods to `lodash.prototype`. - arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function(methodName) { - var func = arrayProto[methodName], - chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 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Ob(a)});r("mori.mutable.freeze",ce);r("mori.mutable.conj",de);r("mori.mutable.conj.f0",de.l);r("mori.mutable.conj.f1",de.b);r("mori.mutable.conj.f2",de.a);r("mori.mutable.conj.fn",de.K);r("mori.mutable.assoc",ee);r("mori.mutable.assoc.f3",ee.c);r("mori.mutable.assoc.fn",ee.K);r("mori.mutable.dissoc",fe);r("mori.mutable.dissoc.f2",fe.a);r("mori.mutable.dissoc.fn",fe.K);r("mori.mutable.pop",function(a){return Ub(a)});r("mori.mutable.disj",ge); -r("mori.mutable.disj.f2",ge.a);r("mori.mutable.disj.fn",ge.K);;return this.mori;}.call({});}); diff --git a/third_party/immer/extra/js/lib/platform.js b/third_party/immer/extra/js/lib/platform.js deleted file mode 100644 index a998e99537..0000000000 --- a/third_party/immer/extra/js/lib/platform.js +++ /dev/null @@ -1,1135 +0,0 @@ -/*! - * Platform.js v1.3.1 <http://mths.be/platform> - * Copyright 2014-2016 Benjamin Tan <https://d10.github.io/> - * Copyright 2011-2013 John-David Dalton <http://allyoucanleet.com/> - * Available under MIT license <http://mths.be/mit> - */ -;(function() { - 'use strict'; - - /** Used to determine if values are of the language type `Object` */ - var objectTypes = { - 'function': true, - 'object': true - }; - - /** Used as a reference to the global object */ - var root = (objectTypes[typeof window] && window) || this; - - /** Backup possible global object */ - var oldRoot = root; - - /** Detect free variable `exports` */ - var freeExports = objectTypes[typeof exports] && exports; - - /** Detect free variable `module` */ - var freeModule = objectTypes[typeof module] && module && !module.nodeType && module; - - /** Detect free variable `global` from Node.js or Browserified code and use it as `root` */ - var freeGlobal = freeExports && freeModule && typeof global == 'object' && global; - if (freeGlobal && (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal || freeGlobal.self === freeGlobal)) { - root = freeGlobal; - } - - /** - * Used as the maximum length of an array-like object. - * See the [ES6 spec](http://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength) - * for more details. - */ - var maxSafeInteger = Math.pow(2, 53) - 1; - - /** Opera regexp */ - var reOpera = /\bOpera/; - - /** Possible global object */ - var thisBinding = this; - - /** Used for native method references */ - var objectProto = Object.prototype; - - /** Used to check for own properties of an object */ - var hasOwnProperty = objectProto.hasOwnProperty; - - /** Used to resolve the internal `[[Class]]` of values */ - var toString = objectProto.toString; - - /*--------------------------------------------------------------------------*/ - - /** - * Capitalizes a string value. - * - * @private - * @param {string} string The string to capitalize. - * @returns {string} The capitalized string. - */ - function capitalize(string) { - string = String(string); - return string.charAt(0).toUpperCase() + string.slice(1); - } - - /** - * A utility function to clean up the OS name. - * - * @private - * @param {string} os The OS name to clean up. - * @param {string} [pattern] A `RegExp` pattern matching the OS name. - * @param {string} [label] A label for the OS. - */ - function cleanupOS(os, pattern, label) { - // platform tokens defined at - // http://msdn.microsoft.com/en-us/library/ms537503(VS.85).aspx - // http://web.archive.org/web/20081122053950/http://msdn.microsoft.com/en-us/library/ms537503(VS.85).aspx - var data = { - '6.4': '10', - '6.3': '8.1', - '6.2': '8', - '6.1': 'Server 2008 R2 / 7', - '6.0': 'Server 2008 / Vista', - '5.2': 'Server 2003 / XP 64-bit', - '5.1': 'XP', - '5.01': '2000 SP1', - '5.0': '2000', - '4.0': 'NT', - '4.90': 'ME' - }; - // detect Windows version from platform tokens - if (pattern && label && /^Win/i.test(os) && - (data = data[0/*Opera 9.25 fix*/, /[\d.]+$/.exec(os)])) { - os = 'Windows ' + data; - } - // correct character case and cleanup - os = String(os); - - if (pattern && label) { - os = os.replace(RegExp(pattern, 'i'), label); - } - - os = format( - os.replace(/ ce$/i, ' CE') - .replace(/\bhpw/i, 'web') - .replace(/\bMacintosh\b/, 'Mac OS') - .replace(/_PowerPC\b/i, ' OS') - .replace(/\b(OS X) [^ \d]+/i, '$1') - .replace(/\bMac (OS X)\b/, '$1') - .replace(/\/(\d)/, ' $1') - .replace(/_/g, '.') - .replace(/(?: BePC|[ .]*fc[ \d.]+)$/i, '') - .replace(/\bx86\.64\b/gi, 'x86_64') - .replace(/\b(Windows Phone) OS\b/, '$1') - .split(' on ')[0] - ); - - return os; - } - - /** - * An iteration utility for arrays and objects. - * - * @private - * @param {Array|Object} object The object to iterate over. - * @param {Function} callback The function called per iteration. - */ - function each(object, callback) { - var index = -1, - length = object ? object.length : 0; - - if (typeof length == 'number' && length > -1 && length <= maxSafeInteger) { - while (++index < length) { - callback(object[index], index, object); - } - } else { - forOwn(object, callback); - } - } - - /** - * Trim and conditionally capitalize string values. - * - * @private - * @param {string} string The string to format. - * @returns {string} The formatted string. - */ - function format(string) { - string = trim(string); - return /^(?:webOS|i(?:OS|P))/.test(string) - ? string - : capitalize(string); - } - - /** - * Iterates over an object's own properties, executing the `callback` for each. - * - * @private - * @param {Object} object The object to iterate over. - * @param {Function} callback The function executed per own property. - */ - function forOwn(object, callback) { - for (var key in object) { - if (hasOwnProperty.call(object, key)) { - callback(object[key], key, object); - } - } - } - - /** - * Gets the internal `[[Class]]` of a value. - * - * @private - * @param {*} value The value. - * @returns {string} The `[[Class]]`. - */ - function getClassOf(value) { - return value == null - ? capitalize(value) - : toString.call(value).slice(8, -1); - } - - /** - * Host objects can return type values that are different from their actual - * data type. The objects we are concerned with usually return non-primitive - * types of "object", "function", or "unknown". - * - * @private - * @param {*} object The owner of the property. - * @param {string} property The property to check. - * @returns {boolean} Returns `true` if the property value is a non-primitive, else `false`. - */ - function isHostType(object, property) { - var type = object != null ? typeof object[property] : 'number'; - return !/^(?:boolean|number|string|undefined)$/.test(type) && - (type == 'object' ? !!object[property] : true); - } - - /** - * Prepares a string for use in a `RegExp` by making hyphens and spaces optional. - * - * @private - * @param {string} string The string to qualify. - * @returns {string} The qualified string. - */ - function qualify(string) { - return String(string).replace(/([ -])(?!$)/g, '$1?'); - } - - /** - * A bare-bones `Array#reduce` like utility function. - * - * @private - * @param {Array} array The array to iterate over. - * @param {Function} callback The function called per iteration. - * @returns {*} The accumulated result. - */ - function reduce(array, callback) { - var accumulator = null; - each(array, function(value, index) { - accumulator = callback(accumulator, value, index, array); - }); - return accumulator; - } - - /** - * Removes leading and trailing whitespace from a string. - * - * @private - * @param {string} string The string to trim. - * @returns {string} The trimmed string. - */ - function trim(string) { - return String(string).replace(/^ +| +$/g, ''); - } - - /*--------------------------------------------------------------------------*/ - - /** - * Creates a new platform object. - * - * @memberOf platform - * @param {Object|string} [ua=navigator.userAgent] The user agent string or - * context object. - * @returns {Object} A platform object. - */ - function parse(ua) { - - /** The environment context object */ - var context = root; - - /** Used to flag when a custom context is provided */ - var isCustomContext = ua && typeof ua == 'object' && getClassOf(ua) != 'String'; - - // juggle arguments - if (isCustomContext) { - context = ua; - ua = null; - } - - /** Browser navigator object */ - var nav = context.navigator || {}; - - /** Browser user agent string */ - var userAgent = nav.userAgent || ''; - - ua || (ua = userAgent); - - /** Used to flag when `thisBinding` is the [ModuleScope] */ - var isModuleScope = isCustomContext || thisBinding == oldRoot; - - /** Used to detect if browser is like Chrome */ - var likeChrome = isCustomContext - ? !!nav.likeChrome - : /\bChrome\b/.test(ua) && !/internal|\n/i.test(toString.toString()); - - /** Internal `[[Class]]` value shortcuts */ - var objectClass = 'Object', - airRuntimeClass = isCustomContext ? objectClass : 'ScriptBridgingProxyObject', - enviroClass = isCustomContext ? objectClass : 'Environment', - javaClass = (isCustomContext && context.java) ? 'JavaPackage' : getClassOf(context.java), - phantomClass = isCustomContext ? objectClass : 'RuntimeObject'; - - /** Detect Java environment */ - var java = /\bJava/.test(javaClass) && context.java; - - /** Detect Rhino */ - var rhino = java && getClassOf(context.environment) == enviroClass; - - /** A character to represent alpha */ - var alpha = java ? 'a' : '\u03b1'; - - /** A character to represent beta */ - var beta = java ? 'b' : '\u03b2'; - - /** Browser document object */ - var doc = context.document || {}; - - /** - * Detect Opera browser (Presto-based) - * http://www.howtocreate.co.uk/operaStuff/operaObject.html - * http://dev.opera.com/articles/view/opera-mini-web-content-authoring-guidelines/#operamini - */ - var opera = context.operamini || context.opera; - - /** Opera `[[Class]]` */ - var operaClass = reOpera.test(operaClass = (isCustomContext && opera) ? opera['[[Class]]'] : getClassOf(opera)) - ? operaClass - : (opera = null); - - /*------------------------------------------------------------------------*/ - - /** Temporary variable used over the script's lifetime */ - var data; - - /** The CPU architecture */ - var arch = ua; - - /** Platform description array */ - var description = []; - - /** Platform alpha/beta indicator */ - var prerelease = null; - - /** A flag to indicate that environment features should be used to resolve the platform */ - var useFeatures = ua == userAgent; - - /** The browser/environment version */ - var version = useFeatures && opera && typeof opera.version == 'function' && opera.version(); - - /** A flag to indicate if the OS ends with "/ Version" */ - var isSpecialCasedOS; - - /* Detectable layout engines (order is important) */ - var layout = getLayout([ - 'Trident', - { 'label': 'WebKit', 'pattern': 'AppleWebKit' }, - 'iCab', - 'Presto', - 'NetFront', - 'Tasman', - 'KHTML', - 'Gecko' - ]); - - /* Detectable browser names (order is important) */ - var name = getName([ - 'Adobe AIR', - 'Arora', - 'Avant Browser', - 'Breach', - 'Camino', - 'Epiphany', - 'Fennec', - 'Flock', - 'Galeon', - 'GreenBrowser', - 'iCab', - 'Iceweasel', - { 'label': 'SRWare Iron', 'pattern': 'Iron' }, - 'K-Meleon', - 'Konqueror', - 'Lunascape', - 'Maxthon', - 'Midori', - 'Nook Browser', - 'PhantomJS', - 'Raven', - 'Rekonq', - 'RockMelt', - 'SeaMonkey', - { 'label': 'Silk', 'pattern': '(?:Cloud9|Silk-Accelerated)' }, - 'Sleipnir', - 'SlimBrowser', - 'Sunrise', - 'Swiftfox', - 'WebPositive', - 'Opera Mini', - { 'label': 'Opera Mini', 'pattern': 'OPiOS' }, - 'Opera', - { 'label': 'Opera', 'pattern': 'OPR' }, - 'Chrome', - { 'label': 'Chrome Mobile', 'pattern': '(?:CriOS|CrMo)' }, - { 'label': 'Firefox', 'pattern': '(?:Firefox|Minefield)' }, - { 'label': 'IE', 'pattern': 'IEMobile' }, - { 'label': 'IE', 'pattern': 'MSIE' }, - 'Safari' - ]); - - /* Detectable products (order is important) */ - var product = getProduct([ - { 'label': 'BlackBerry', 'pattern': 'BB10' }, - 'BlackBerry', - { 'label': 'Galaxy S', 'pattern': 'GT-I9000' }, - { 'label': 'Galaxy S2', 'pattern': 'GT-I9100' }, - { 'label': 'Galaxy S3', 'pattern': 'GT-I9300' }, - { 'label': 'Galaxy S4', 'pattern': 'GT-I9500' }, - 'Google TV', - 'Lumia', - 'iPad', - 'iPod', - 'iPhone', - 'Kindle', - { 'label': 'Kindle Fire', 'pattern': '(?:Cloud9|Silk-Accelerated)' }, - 'Nook', - 'PlayBook', - 'PlayStation 4', - 'PlayStation 3', - 'PlayStation Vita', - 'TouchPad', - 'Transformer', - { 'label': 'Wii U', 'pattern': 'WiiU' }, - 'Wii', - 'Xbox One', - { 'label': 'Xbox 360', 'pattern': 'Xbox' }, - 'Xoom' - ]); - - /* Detectable manufacturers */ - var manufacturer = getManufacturer({ - 'Apple': { 'iPad': 1, 'iPhone': 1, 'iPod': 1 }, - 'Amazon': { 'Kindle': 1, 'Kindle Fire': 1 }, - 'Asus': { 'Transformer': 1 }, - 'Barnes & Noble': { 'Nook': 1 }, - 'BlackBerry': { 'PlayBook': 1 }, - 'Google': { 'Google TV': 1 }, - 'HP': { 'TouchPad': 1 }, - 'HTC': {}, - 'LG': {}, - 'Microsoft': { 'Xbox': 1, 'Xbox One': 1 }, - 'Motorola': { 'Xoom': 1 }, - 'Nintendo': { 'Wii U': 1, 'Wii': 1 }, - 'Nokia': { 'Lumia': 1 }, - 'Samsung': { 'Galaxy S': 1, 'Galaxy S2': 1, 'Galaxy S3': 1, 'Galaxy S4': 1 }, - 'Sony': { 'PlayStation 4': 1, 'PlayStation 3': 1, 'PlayStation Vita': 1 } - }); - - /* Detectable OSes (order is important) */ - var os = getOS([ - 'Windows Phone ', - 'Android', - 'CentOS', - 'Debian', - 'Fedora', - 'FreeBSD', - 'Gentoo', - 'Haiku', - 'Kubuntu', - 'Linux Mint', - 'Red Hat', - 'SuSE', - 'Ubuntu', - 'Xubuntu', - 'Cygwin', - 'Symbian OS', - 'hpwOS', - 'webOS ', - 'webOS', - 'Tablet OS', - 'Linux', - 'Mac OS X', - 'Macintosh', - 'Mac', - 'Windows 98;', - 'Windows ' - ]); - - /*------------------------------------------------------------------------*/ - - /** - * Picks the layout engine from an array of guesses. - * - * @private - * @param {Array} guesses An array of guesses. - * @returns {null|string} The detected layout engine. - */ - function getLayout(guesses) { - return reduce(guesses, function(result, guess) { - return result || RegExp('\\b' + ( - guess.pattern || qualify(guess) - ) + '\\b', 'i').exec(ua) && (guess.label || guess); - }); - } - - /** - * Picks the manufacturer from an array of guesses. - * - * @private - * @param {Array} guesses An object of guesses. - * @returns {null|string} The detected manufacturer. - */ - function getManufacturer(guesses) { - return reduce(guesses, function(result, value, key) { - // lookup the manufacturer by product or scan the UA for the manufacturer - return result || ( - value[product] || - value[0/*Opera 9.25 fix*/, /^[a-z]+(?: +[a-z]+\b)*/i.exec(product)] || - RegExp('\\b' + qualify(key) + '(?:\\b|\\w*\\d)', 'i').exec(ua) - ) && key; - }); - } - - /** - * Picks the browser name from an array of guesses. - * - * @private - * @param {Array} guesses An array of guesses. - * @returns {null|string} The detected browser name. - */ - function getName(guesses) { - return reduce(guesses, function(result, guess) { - return result || RegExp('\\b' + ( - guess.pattern || qualify(guess) - ) + '\\b', 'i').exec(ua) && (guess.label || guess); - }); - } - - /** - * Picks the OS name from an array of guesses. - * - * @private - * @param {Array} guesses An array of guesses. - * @returns {null|string} The detected OS name. - */ - function getOS(guesses) { - return reduce(guesses, function(result, guess) { - var pattern = guess.pattern || qualify(guess); - if (!result && (result = - RegExp('\\b' + pattern + '(?:/[\\d.]+|[ \\w.]*)', 'i').exec(ua) - )) { - result = cleanupOS(result, pattern, guess.label || guess); - } - return result; - }); - } - - /** - * Picks the product name from an array of guesses. - * - * @private - * @param {Array} guesses An array of guesses. - * @returns {null|string} The detected product name. - */ - function getProduct(guesses) { - return reduce(guesses, function(result, guess) { - var pattern = guess.pattern || qualify(guess); - if (!result && (result = - RegExp('\\b' + pattern + ' *\\d+[.\\w_]*', 'i').exec(ua) || - RegExp('\\b' + pattern + '(?:; *(?:[a-z]+[_-])?[a-z]+\\d+|[^ ();-]*)', 'i').exec(ua) - )) { - // split by forward slash and append product version if needed - if ((result = String((guess.label && !RegExp(pattern, 'i').test(guess.label)) ? guess.label : result).split('/'))[1] && !/[\d.]+/.test(result[0])) { - result[0] += ' ' + result[1]; - } - // correct character case and cleanup - guess = guess.label || guess; - result = format(result[0] - .replace(RegExp(pattern, 'i'), guess) - .replace(RegExp('; *(?:' + guess + '[_-])?', 'i'), ' ') - .replace(RegExp('(' + guess + ')[-_.]?(\\w)', 'i'), '$1 $2')); - } - return result; - }); - } - - /** - * Resolves the version using an array of UA patterns. - * - * @private - * @param {Array} patterns An array of UA patterns. - * @returns {null|string} The detected version. - */ - function getVersion(patterns) { - return reduce(patterns, function(result, pattern) { - return result || (RegExp(pattern + - '(?:-[\\d.]+/|(?: for [\\w-]+)?[ /-])([\\d.]+[^ ();/_-]*)', 'i').exec(ua) || 0)[1] || null; - }); - } - - /** - * Returns `platform.description` when the platform object is coerced to a string. - * - * @name toString - * @memberOf platform - * @returns {string} Returns `platform.description` if available, else an empty string. - */ - function toStringPlatform() { - return this.description || ''; - } - - /*------------------------------------------------------------------------*/ - - // convert layout to an array so we can add extra details - layout && (layout = [layout]); - - // detect product names that contain their manufacturer's name - if (manufacturer && !product) { - product = getProduct([manufacturer]); - } - // clean up Google TV - if ((data = /\bGoogle TV\b/.exec(product))) { - product = data[0]; - } - // detect simulators - if (/\bSimulator\b/i.test(ua)) { - product = (product ? product + ' ' : '') + 'Simulator'; - } - // detect Opera Mini 8+ running in Turbo/Uncompressed mode on iOS - if (name == 'Opera Mini' && /\bOPiOS\b/.test(ua)) { - description.push('running in Turbo/Uncompressed mode'); - } - // detect iOS - if (/^iP/.test(product)) { - name || (name = 'Safari'); - os = 'iOS' + ((data = / OS ([\d_]+)/i.exec(ua)) - ? ' ' + data[1].replace(/_/g, '.') - : ''); - } - // detect Kubuntu - else if (name == 'Konqueror' && !/buntu/i.test(os)) { - os = 'Kubuntu'; - } - // detect Android browsers - else if (manufacturer && manufacturer != 'Google' && - ((/Chrome/.test(name) && !/\bMobile Safari\b/i.test(ua)) || /\bVita\b/.test(product))) { - name = 'Android Browser'; - os = /\bAndroid\b/.test(os) ? os : 'Android'; - } - // detect false positives for Firefox/Safari - else if (!name || (data = !/\bMinefield\b|\(Android;/i.test(ua) && /\b(?:Firefox|Safari)\b/.exec(name))) { - // escape the `/` for Firefox 1 - if (name && !product && /[\/,]|^[^(]+?\)/.test(ua.slice(ua.indexOf(data + '/') + 8))) { - // clear name of false positives - name = null; - } - // reassign a generic name - if ((data = product || manufacturer || os) && - (product || manufacturer || /\b(?:Android|Symbian OS|Tablet OS|webOS)\b/.test(os))) { - name = /[a-z]+(?: Hat)?/i.exec(/\bAndroid\b/.test(os) ? os : data) + ' Browser'; - } - } - // detect Firefox OS - if ((data = /\((Mobile|Tablet).*?Firefox\b/i.exec(ua)) && data[1]) { - os = 'Firefox OS'; - if (!product) { - product = data[1]; - } - } - // detect non-Opera versions (order is important) - if (!version) { - version = getVersion([ - '(?:Cloud9|CriOS|CrMo|IEMobile|Iron|Opera ?Mini|OPiOS|OPR|Raven|Silk(?!/[\\d.]+$))', - 'Version', - qualify(name), - '(?:Firefox|Minefield|NetFront)' - ]); - } - // detect stubborn layout engines - if (layout == 'iCab' && parseFloat(version) > 3) { - layout = ['WebKit']; - } else if ( - layout != 'Trident' && - (data = - /\bOpera\b/.test(name) && (/\bOPR\b/.test(ua) ? 'Blink' : 'Presto') || - /\b(?:Midori|Nook|Safari)\b/i.test(ua) && 'WebKit' || - !layout && /\bMSIE\b/i.test(ua) && (os == 'Mac OS' ? 'Tasman' : 'Trident') - ) - ) { - layout = [data]; - } - // detect NetFront on PlayStation - else if (/\bPlayStation\b(?! Vita\b)/i.test(name) && layout == 'WebKit') { - layout = ['NetFront']; - } - // detect Windows Phone 7 desktop mode - if (name == 'IE' && (data = (/; *(?:XBLWP|ZuneWP)(\d+)/i.exec(ua) || 0)[1])) { - name += ' Mobile'; - os = 'Windows Phone ' + (/\+$/.test(data) ? data : data + '.x'); - description.unshift('desktop mode'); - } - // detect Windows Phone 8+ desktop mode - else if (/\bWPDesktop\b/i.test(ua)) { - name = 'IE Mobile'; - os = 'Windows Phone 8+'; - description.unshift('desktop mode'); - version || (version = (/\brv:([\d.]+)/.exec(ua) || 0)[1]); - } - // detect IE 11 and above - else if (name != 'IE' && layout == 'Trident' && (data = /\brv:([\d.]+)/.exec(ua))) { - if (!/\bWPDesktop\b/i.test(ua)) { - if (name) { - description.push('identifying as ' + name + (version ? ' ' + version : '')); - } - name = 'IE'; - } - version = data[1]; - } - // detect Microsoft Edge - else if ((name == 'Chrome' || name != 'IE') && (data = /\bEdge\/([\d.]+)/.exec(ua))) { - name = 'Microsoft Edge'; - version = data[1]; - layout = ['Trident']; - } - // leverage environment features - if (useFeatures) { - // detect server-side environments - // Rhino has a global function while others have a global object - if (isHostType(context, 'global')) { - if (java) { - data = java.lang.System; - arch = data.getProperty('os.arch'); - os = os || data.getProperty('os.name') + ' ' + data.getProperty('os.version'); - } - if (isModuleScope && isHostType(context, 'system') && (data = [context.system])[0]) { - os || (os = data[0].os || null); - try { - data[1] = context.require('ringo/engine').version; - version = data[1].join('.'); - name = 'RingoJS'; - } catch(e) { - if (data[0].global.system == context.system) { - name = 'Narwhal'; - } - } - } - else if (typeof context.process == 'object' && (data = context.process)) { - name = 'Node.js'; - arch = data.arch; - os = data.platform; - version = /[\d.]+/.exec(data.version)[0]; - } - else if (rhino) { - name = 'Rhino'; - } - } - // detect Adobe AIR - else if (getClassOf((data = context.runtime)) == airRuntimeClass) { - name = 'Adobe AIR'; - os = data.flash.system.Capabilities.os; - } - // detect PhantomJS - else if (getClassOf((data = context.phantom)) == phantomClass) { - name = 'PhantomJS'; - version = (data = data.version || null) && (data.major + '.' + data.minor + '.' + data.patch); - } - // detect IE compatibility modes - else if (typeof doc.documentMode == 'number' && (data = /\bTrident\/(\d+)/i.exec(ua))) { - // we're in compatibility mode when the Trident version + 4 doesn't - // equal the document mode - version = [version, doc.documentMode]; - if ((data = +data[1] + 4) != version[1]) { - description.push('IE ' + version[1] + ' mode'); - layout && (layout[1] = ''); - version[1] = data; - } - version = name == 'IE' ? String(version[1].toFixed(1)) : version[0]; - } - os = os && format(os); - } - // detect prerelease phases - if (version && (data = - /(?:[ab]|dp|pre|[ab]\d+pre)(?:\d+\+?)?$/i.exec(version) || - /(?:alpha|beta)(?: ?\d)?/i.exec(ua + ';' + (useFeatures && nav.appMinorVersion)) || - /\bMinefield\b/i.test(ua) && 'a' - )) { - prerelease = /b/i.test(data) ? 'beta' : 'alpha'; - version = version.replace(RegExp(data + '\\+?$'), '') + - (prerelease == 'beta' ? beta : alpha) + (/\d+\+?/.exec(data) || ''); - } - // detect Firefox Mobile - if (name == 'Fennec' || name == 'Firefox' && /\b(?:Android|Firefox OS)\b/.test(os)) { - name = 'Firefox Mobile'; - } - // obscure Maxthon's unreliable version - else if (name == 'Maxthon' && version) { - version = version.replace(/\.[\d.]+/, '.x'); - } - // detect Silk desktop/accelerated modes - else if (name == 'Silk') { - if (!/\bMobi/i.test(ua)) { - os = 'Android'; - description.unshift('desktop mode'); - } - if (/Accelerated *= *true/i.test(ua)) { - description.unshift('accelerated'); - } - } - // detect Xbox 360 and Xbox One - else if (/\bXbox\b/i.test(product)) { - os = null; - if (product == 'Xbox 360' && /\bIEMobile\b/.test(ua)) { - description.unshift('mobile mode'); - } - } - // add mobile postfix - else if ((/^(?:Chrome|IE|Opera)$/.test(name) || name && !product && !/Browser|Mobi/.test(name)) && - (os == 'Windows CE' || /Mobi/i.test(ua))) { - name += ' Mobile'; - } - // detect IE platform preview - else if (name == 'IE' && useFeatures && context.external === null) { - description.unshift('platform preview'); - } - // detect BlackBerry OS version - // http://docs.blackberry.com/en/developers/deliverables/18169/HTTP_headers_sent_by_BB_Browser_1234911_11.jsp - else if ((/\bBlackBerry\b/.test(product) || /\bBB10\b/.test(ua)) && (data = - (RegExp(product.replace(/ +/g, ' *') + '/([.\\d]+)', 'i').exec(ua) || 0)[1] || - version - )) { - data = [data, /BB10/.test(ua)]; - os = (data[1] ? (product = null, manufacturer = 'BlackBerry') : 'Device Software') + ' ' + data[0]; - version = null; - } - // detect Opera identifying/masking itself as another browser - // http://www.opera.com/support/kb/view/843/ - else if (this != forOwn && ( - product != 'Wii' && ( - (useFeatures && opera) || - (/Opera/.test(name) && /\b(?:MSIE|Firefox)\b/i.test(ua)) || - (name == 'Firefox' && /\bOS X (?:\d+\.){2,}/.test(os)) || - (name == 'IE' && ( - (os && !/^Win/.test(os) && version > 5.5) || - /\bWindows XP\b/.test(os) && version > 8 || - version == 8 && !/\bTrident\b/.test(ua) - )) - ) - ) && !reOpera.test((data = parse.call(forOwn, ua.replace(reOpera, '') + ';'))) && data.name) { - - // when "indentifying", the UA contains both Opera and the other browser's name - data = 'ing as ' + data.name + ((data = data.version) ? ' ' + data : ''); - if (reOpera.test(name)) { - if (/\bIE\b/.test(data) && os == 'Mac OS') { - os = null; - } - data = 'identify' + data; - } - // when "masking", the UA contains only the other browser's name - else { - data = 'mask' + data; - if (operaClass) { - name = format(operaClass.replace(/([a-z])([A-Z])/g, '$1 $2')); - } else { - name = 'Opera'; - } - if (/\bIE\b/.test(data)) { - os = null; - } - if (!useFeatures) { - version = null; - } - } - layout = ['Presto']; - description.push(data); - } - // detect WebKit Nightly and approximate Chrome/Safari versions - if ((data = (/\bAppleWebKit\/([\d.]+\+?)/i.exec(ua) || 0)[1])) { - // correct build for numeric comparison - // (e.g. "532.5" becomes "532.05") - data = [parseFloat(data.replace(/\.(\d)$/, '.0$1')), data]; - // nightly builds are postfixed with a `+` - if (name == 'Safari' && data[1].slice(-1) == '+') { - name = 'WebKit Nightly'; - prerelease = 'alpha'; - version = data[1].slice(0, -1); - } - // clear incorrect browser versions - else if (version == data[1] || - version == (data[2] = (/\bSafari\/([\d.]+\+?)/i.exec(ua) || 0)[1])) { - version = null; - } - // use the full Chrome version when available - data[1] = (/\bChrome\/([\d.]+)/i.exec(ua) || 0)[1]; - // detect Blink layout engine - if (data[0] == 537.36 && data[2] == 537.36 && parseFloat(data[1]) >= 28 && name != 'IE' && name != 'Microsoft Edge') { - layout = ['Blink']; - } - // detect JavaScriptCore - // http://stackoverflow.com/questions/6768474/how-can-i-detect-which-javascript-engine-v8-or-jsc-is-used-at-runtime-in-androi - if (!useFeatures || (!likeChrome && !data[1])) { - layout && (layout[1] = 'like Safari'); - data = (data = data[0], data < 400 ? 1 : data < 500 ? 2 : data < 526 ? 3 : data < 533 ? 4 : data < 534 ? '4+' : data < 535 ? 5 : data < 537 ? 6 : data < 538 ? 7 : data < 601 ? 8 : '8'); - } else { - layout && (layout[1] = 'like Chrome'); - data = data[1] || (data = data[0], data < 530 ? 1 : data < 532 ? 2 : data < 532.05 ? 3 : data < 533 ? 4 : data < 534.03 ? 5 : data < 534.07 ? 6 : data < 534.10 ? 7 : data < 534.13 ? 8 : data < 534.16 ? 9 : data < 534.24 ? 10 : data < 534.30 ? 11 : data < 535.01 ? 12 : data < 535.02 ? '13+' : data < 535.07 ? 15 : data < 535.11 ? 16 : data < 535.19 ? 17 : data < 536.05 ? 18 : data < 536.10 ? 19 : data < 537.01 ? 20 : data < 537.11 ? '21+' : data < 537.13 ? 23 : data < 537.18 ? 24 : data < 537.24 ? 25 : data < 537.36 ? 26 : layout != 'Blink' ? '27' : '28'); - } - // add the postfix of ".x" or "+" for approximate versions - layout && (layout[1] += ' ' + (data += typeof data == 'number' ? '.x' : /[.+]/.test(data) ? '' : '+')); - // obscure version for some Safari 1-2 releases - if (name == 'Safari' && (!version || parseInt(version) > 45)) { - version = data; - } - } - // detect Opera desktop modes - if (name == 'Opera' && (data = /\bzbov|zvav$/.exec(os))) { - name += ' '; - description.unshift('desktop mode'); - if (data == 'zvav') { - name += 'Mini'; - version = null; - } else { - name += 'Mobile'; - } - os = os.replace(RegExp(' *' + data + '$'), ''); - } - // detect Chrome desktop mode - else if (name == 'Safari' && /\bChrome\b/.exec(layout && layout[1])) { - description.unshift('desktop mode'); - name = 'Chrome Mobile'; - version = null; - - if (/\bOS X\b/.test(os)) { - manufacturer = 'Apple'; - os = 'iOS 4.3+'; - } else { - os = null; - } - } - // strip incorrect OS versions - if (version && version.indexOf((data = /[\d.]+$/.exec(os))) == 0 && - ua.indexOf('/' + data + '-') > -1) { - os = trim(os.replace(data, '')); - } - // add layout engine - if (layout && !/\b(?:Avant|Nook)\b/.test(name) && ( - /Browser|Lunascape|Maxthon/.test(name) || - /^(?:Adobe|Arora|Breach|Midori|Opera|Phantom|Rekonq|Rock|Sleipnir|Web)/.test(name) && layout[1])) { - // don't add layout details to description if they are falsey - (data = layout[layout.length - 1]) && description.push(data); - } - // combine contextual information - if (description.length) { - description = ['(' + description.join('; ') + ')']; - } - // append manufacturer - if (manufacturer && product && product.indexOf(manufacturer) < 0) { - description.push('on ' + manufacturer); - } - // append product - if (product) { - description.push((/^on /.test(description[description.length -1]) ? '' : 'on ') + product); - } - // parse OS into an object - if (os) { - data = / ([\d.+]+)$/.exec(os); - isSpecialCasedOS = data && os.charAt(os.length - data[0].length - 1) == '/'; - os = { - 'architecture': 32, - 'family': (data && !isSpecialCasedOS) ? os.replace(data[0], '') : os, - 'version': data ? data[1] : null, - 'toString': function() { - var version = this.version; - return this.family + ((version && !isSpecialCasedOS) ? ' ' + version : '') + (this.architecture == 64 ? ' 64-bit' : ''); - } - }; - } - // add browser/OS architecture - if ((data = /\b(?:AMD|IA|Win|WOW|x86_|x)64\b/i.exec(arch)) && !/\bi686\b/i.test(arch)) { - if (os) { - os.architecture = 64; - os.family = os.family.replace(RegExp(' *' + data), ''); - } - if ( - name && (/\bWOW64\b/i.test(ua) || - (useFeatures && /\w(?:86|32)$/.test(nav.cpuClass || nav.platform) && !/\bWin64; x64\b/i.test(ua))) - ) { - description.unshift('32-bit'); - } - } - - ua || (ua = null); - - /*------------------------------------------------------------------------*/ - - /** - * The platform object. - * - * @name platform - * @type Object - */ - var platform = {}; - - /** - * The platform description. - * - * @memberOf platform - * @type string|null - */ - platform.description = ua; - - /** - * The name of the browser's layout engine. - * - * @memberOf platform - * @type string|null - */ - platform.layout = layout && layout[0]; - - /** - * The name of the product's manufacturer. - * - * @memberOf platform - * @type string|null - */ - platform.manufacturer = manufacturer; - - /** - * The name of the browser/environment. - * - * @memberOf platform - * @type string|null - */ - platform.name = name; - - /** - * The alpha/beta release indicator. - * - * @memberOf platform - * @type string|null - */ - platform.prerelease = prerelease; - - /** - * The name of the product hosting the browser. - * - * @memberOf platform - * @type string|null - */ - platform.product = product; - - /** - * The browser's user agent string. - * - * @memberOf platform - * @type string|null - */ - platform.ua = ua; - - /** - * The browser/environment version. - * - * @memberOf platform - * @type string|null - */ - platform.version = name && version; - - /** - * The name of the operating system. - * - * @memberOf platform - * @type Object - */ - platform.os = os || { - - /** - * The CPU architecture the OS is built for. - * - * @memberOf platform.os - * @type number|null - */ - 'architecture': null, - - /** - * The family of the OS. - * - * Common values include: - * "Windows", "Windows Server 2008 R2 / 7", "Windows Server 2008 / Vista", - * "Windows XP", "OS X", "Ubuntu", "Debian", "Fedora", "Red Hat", "SuSE", - * "Android", "iOS" and "Windows Phone" - * - * @memberOf platform.os - * @type string|null - */ - 'family': null, - - /** - * The version of the OS. - * - * @memberOf platform.os - * @type string|null - */ - 'version': null, - - /** - * Returns the OS string. - * - * @memberOf platform.os - * @returns {string} The OS string. - */ - 'toString': function() { return 'null'; } - }; - - platform.parse = parse; - platform.toString = toStringPlatform; - - if (platform.version) { - description.unshift(version); - } - if (platform.name) { - description.unshift(name); - } - if (os && name && !(os == String(os).split(' ')[0] && (os == name.split(' ')[0] || product))) { - description.push(product ? '(' + os + ')' : 'on ' + os); - } - if (description.length) { - platform.description = description.join(' '); - } - return platform; - } - - /*--------------------------------------------------------------------------*/ - - // export platform - // some AMD build optimizers, like r.js, check for condition patterns like the following: - if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) { - // define as an anonymous module so, through path mapping, it can be aliased - define(function() { - return parse(); - }); - } - // check for `exports` after `define` in case a build optimizer adds an `exports` object - else if (freeExports && freeModule) { - // in Narwhal, Node.js, Rhino -require, or RingoJS - forOwn(parse(), function(value, key) { - freeExports[key] = value; - }); - } - // in a browser or Rhino - else { - root.platform = parse(); - } -}.call(this)); |