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{
"version": 3,
"sources": ["../../lodash/lodash.js"],
"sourcesContent": ["/**\r\n * @license\r\n * Lodash <https://lodash.com/>\r\n * Copyright OpenJS Foundation and other contributors <https://openjsf.org/>\r\n * Released under MIT license <https://lodash.com/license>\r\n * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>\r\n * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\r\n */\r\n;(function() {\r\n\r\n /** Used as a safe reference for `undefined` in pre-ES5 environments. */\r\n var undefined;\r\n\r\n /** Used as the semantic version number. */\r\n var VERSION = '4.17.21';\r\n\r\n /** Used as the size to enable large array optimizations. */\r\n var LARGE_ARRAY_SIZE = 200;\r\n\r\n /** Error message constants. */\r\n var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',\r\n FUNC_ERROR_TEXT = 'Expected a function',\r\n INVALID_TEMPL_VAR_ERROR_TEXT = 'Invalid `variable` option passed into `_.template`';\r\n\r\n /** Used to stand-in for `undefined` hash values. */\r\n var HASH_UNDEFINED = '__lodash_hash_undefined__';\r\n\r\n /** Used as the maximum memoize cache size. */\r\n var MAX_MEMOIZE_SIZE = 500;\r\n\r\n /** Used as the internal argument placeholder. */\r\n var PLACEHOLDER = '__lodash_placeholder__';\r\n\r\n /** Used to compose bitmasks for cloning. */\r\n var CLONE_DEEP_FLAG = 1,\r\n CLONE_FLAT_FLAG = 2,\r\n CLONE_SYMBOLS_FLAG = 4;\r\n\r\n /** Used to compose bitmasks for value comparisons. */\r\n var COMPARE_PARTIAL_FLAG = 1,\r\n COMPARE_UNORDERED_FLAG = 2;\r\n\r\n /** Used to compose bitmasks for function metadata. */\r\n var WRAP_BIND_FLAG = 1,\r\n WRAP_BIND_KEY_FLAG = 2,\r\n WRAP_CURRY_BOUND_FLAG = 4,\r\n WRAP_CURRY_FLAG = 8,\r\n WRAP_CURRY_RIGHT_FLAG = 16,\r\n WRAP_PARTIAL_FLAG = 32,\r\n WRAP_PARTIAL_RIGHT_FLAG = 64,\r\n WRAP_ARY_FLAG = 128,\r\n WRAP_REARG_FLAG = 256,\r\n WRAP_FLIP_FLAG = 512;\r\n\r\n /** Used as default options for `_.truncate`. */\r\n var DEFAULT_TRUNC_LENGTH = 30,\r\n DEFAULT_TRUNC_OMISSION = '...';\r\n\r\n /** Used to detect hot functions by number of calls within a span of milliseconds. */\r\n var HOT_COUNT = 800,\r\n HOT_SPAN = 16;\r\n\r\n /** Used to indicate the type of lazy iteratees. */\r\n var LAZY_FILTER_FLAG = 1,\r\n LAZY_MAP_FLAG = 2,\r\n LAZY_WHILE_FLAG = 3;\r\n\r\n /** Used as references for various `Number` constants. */\r\n var INFINITY = 1 / 0,\r\n MAX_SAFE_INTEGER = 9007199254740991,\r\n MAX_INTEGER = 1.7976931348623157e+308,\r\n NAN = 0 / 0;\r\n\r\n /** Used as references for the maximum length and index of an array. */\r\n var MAX_ARRAY_LENGTH = 4294967295,\r\n MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,\r\n HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;\r\n\r\n /** Used to associate wrap methods with their bit flags. */\r\n var wrapFlags = [\r\n ['ary', WRAP_ARY_FLAG],\r\n ['bind', WRAP_BIND_FLAG],\r\n ['bindKey', WRAP_BIND_KEY_FLAG],\r\n ['curry', WRAP_CURRY_FLAG],\r\n ['curryRight', WRAP_CURRY_RIGHT_FLAG],\r\n ['flip', WRAP_FLIP_FLAG],\r\n ['partial', WRAP_PARTIAL_FLAG],\r\n ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],\r\n ['rearg', WRAP_REARG_FLAG]\r\n ];\r\n\r\n /** `Object#toString` result references. */\r\n var argsTag = '[object Arguments]',\r\n arrayTag = '[object Array]',\r\n asyncTag = '[object AsyncFunction]',\r\n boolTag = '[object Boolean]',\r\n dateTag = '[object Date]',\r\n domExcTag = '[object DOMException]',\r\n errorTag = '[object Error]',\r\n funcTag = '[object Function]',\r\n genTag = '[object GeneratorFunction]',\r\n mapTag = '[object Map]',\r\n numberTag = '[object Number]',\r\n nullTag = '[object Null]',\r\n objectTag = '[object Object]',\r\n promiseTag = '[object Promise]',\r\n proxyTag = '[object Proxy]',\r\n regexpTag = '[object RegExp]',\r\n setTag = '[object Set]',\r\n stringTag = '[object String]',\r\n symbolTag = '[object Symbol]',\r\n undefinedTag = '[object Undefined]',\r\n weakMapTag = '[object WeakMap]',\r\n weakSetTag = '[object WeakSet]';\r\n\r\n var arrayBufferTag = '[object ArrayBuffer]',\r\n dataViewTag = '[object DataView]',\r\n float32Tag = '[object Float32Array]',\r\n float64Tag = '[object Float64Array]',\r\n int8Tag = '[object Int8Array]',\r\n int16Tag = '[object Int16Array]',\r\n int32Tag = '[object Int32Array]',\r\n uint8Tag = '[object Uint8Array]',\r\n uint8ClampedTag = '[object Uint8ClampedArray]',\r\n uint16Tag = '[object Uint16Array]',\r\n uint32Tag = '[object Uint32Array]';\r\n\r\n /** Used to match empty string literals in compiled template source. */\r\n var reEmptyStringLeading = /\\b__p \\+= '';/g,\r\n reEmptyStringMiddle = /\\b(__p \\+=) '' \\+/g,\r\n reEmptyStringTrailing = /(__e\\(.*?\\)|\\b__t\\)) \\+\\n'';/g;\r\n\r\n /** Used to match HTML entities and HTML characters. */\r\n var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,\r\n reUnescapedHtml = /[&<>\"']/g,\r\n reHasEscapedHtml = RegExp(reEscapedHtml.source),\r\n reHasUnescapedHtml = RegExp(reUnescapedHtml.source);\r\n\r\n /** Used to match template delimiters. */\r\n var reEscape = /<%-([\\s\\S]+?)%>/g,\r\n reEvaluate = /<%([\\s\\S]+?)%>/g,\r\n reInterpolate = /<%=([\\s\\S]+?)%>/g;\r\n\r\n /** Used to match property names within property paths. */\r\n var reIsDeepProp = /\\.|\\[(?:[^[\\]]*|([\"'])(?:(?!\\1)[^\\\\]|\\\\.)*?\\1)\\]/,\r\n reIsPlainProp = /^\\w*$/,\r\n rePropName = /[^.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]|(?=(?:\\.|\\[\\])(?:\\.|\\[\\]|$))/g;\r\n\r\n /**\r\n * Used to match `RegExp`\r\n * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).\r\n */\r\n var reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g,\r\n reHasRegExpChar = RegExp(reRegExpChar.source);\r\n\r\n /** Used to match leading whitespace. */\r\n var reTrimStart = /^\\s+/;\r\n\r\n /** Used to match a single whitespace character. */\r\n var reWhitespace = /\\s/;\r\n\r\n /** Used to match wrap detail comments. */\r\n var reWrapComment = /\\{(?:\\n\\/\\* \\[wrapped with .+\\] \\*\\/)?\\n?/,\r\n reWrapDetails = /\\{\\n\\/\\* \\[wrapped with (.+)\\] \\*/,\r\n reSplitDetails = /,? & /;\r\n\r\n /** Used to match words composed of alphanumeric characters. */\r\n var reAsciiWord = /[^\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\x7f]+/g;\r\n\r\n /**\r\n * Used to validate the `validate` option in `_.template` variable.\r\n *\r\n * Forbids characters which could potentially change the meaning of the function argument definition:\r\n * - \"(),\" (modification of function parameters)\r\n * - \"=\" (default value)\r\n * - \"[]{}\" (destructuring of function parameters)\r\n * - \"/\" (beginning of a comment)\r\n * - whitespace\r\n */\r\n var reForbiddenIdentifierChars = /[()=,{}\\[\\]\\/\\s]/;\r\n\r\n /** Used to match backslashes in property paths. */\r\n var reEscapeChar = /\\\\(\\\\)?/g;\r\n\r\n /**\r\n * Used to match\r\n * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).\r\n */\r\n var reEsTemplate = /\\$\\{([^\\\\}]*(?:\\\\.[^\\\\}]*)*)\\}/g;\r\n\r\n /** Used to match `RegExp` flags from their coerced string values. */\r\n var reFlags = /\\w*$/;\r\n\r\n /** Used to detect bad signed hexadecimal string values. */\r\n var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\r\n\r\n /** Used to detect binary string values. */\r\n var reIsBinary = /^0b[01]+$/i;\r\n\r\n /** Used to detect host constructors (Safari). */\r\n var reIsHostCtor = /^\\[object .+?Constructor\\]$/;\r\n\r\n /** Used to detect octal string values. */\r\n var reIsOctal = /^0o[0-7]+$/i;\r\n\r\n /** Used to detect unsigned integer values. */\r\n var reIsUint = /^(?:0|[1-9]\\d*)$/;\r\n\r\n /** Used to match Latin Unicode letters (excluding mathematical operators). */\r\n var reLatin = /[\\xc0-\\xd6\\xd8-\\xf6\\xf8-\\xff\\u0100-\\u017f]/g;\r\n\r\n /** Used to ensure capturing order of template delimiters. */\r\n var reNoMatch = /($^)/;\r\n\r\n /** Used to match unescaped characters in compiled string literals. */\r\n var reUnescapedString = /['\\n\\r\\u2028\\u2029\\\\]/g;\r\n\r\n /** Used to compose unicode character classes. */\r\n var rsAstralRange = '\\\\ud800-\\\\udfff',\r\n rsComboMarksRange = '\\\\u0300-\\\\u036f',\r\n reComboHalfMarksRange = '\\\\ufe20-\\\\ufe2f',\r\n rsComboSymbolsRange = '\\\\u20d0-\\\\u20ff',\r\n rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,\r\n rsDingbatRange = '\\\\u2700-\\\\u27bf',\r\n rsLowerRange = 'a-z\\\\xdf-\\\\xf6\\\\xf8-\\\\xff',\r\n rsMathOpRange = '\\\\xac\\\\xb1\\\\xd7\\\\xf7',\r\n rsNonCharRange = '\\\\x00-\\\\x2f\\\\x3a-\\\\x40\\\\x5b-\\\\x60\\\\x7b-\\\\xbf',\r\n rsPunctuationRange = '\\\\u2000-\\\\u206f',\r\n 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',\r\n rsUpperRange = 'A-Z\\\\xc0-\\\\xd6\\\\xd8-\\\\xde',\r\n rsVarRange = '\\\\ufe0e\\\\ufe0f',\r\n rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;\r\n\r\n /** Used to compose unicode capture groups. */\r\n var rsApos = \"['\\u2019]\",\r\n rsAstral = '[' + rsAstralRange + ']',\r\n rsBreak = '[' + rsBreakRange + ']',\r\n rsCombo = '[' + rsComboRange + ']',\r\n rsDigits = '\\\\d+',\r\n rsDingbat = '[' + rsDingbatRange + ']',\r\n rsLower = '[' + rsLowerRange + ']',\r\n rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',\r\n rsFitz = '\\\\ud83c[\\\\udffb-\\\\udfff]',\r\n rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',\r\n rsNonAstral = '[^' + rsAstralRange + ']',\r\n rsRegional = '(?:\\\\ud83c[\\\\udde6-\\\\uddff]){2}',\r\n rsSurrPair = '[\\\\ud800-\\\\udbff][\\\\udc00-\\\\udfff]',\r\n rsUpper = '[' + rsUpperRange + ']',\r\n rsZWJ = '\\\\u200d';\r\n\r\n /** Used to compose unicode regexes. */\r\n var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',\r\n rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',\r\n rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',\r\n rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',\r\n reOptMod = rsModifier + '?',\r\n rsOptVar = '[' + rsVarRange + ']?',\r\n rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',\r\n rsOrdLower = '\\\\d*(?:1st|2nd|3rd|(?![123])\\\\dth)(?=\\\\b|[A-Z_])',\r\n rsOrdUpper = '\\\\d*(?:1ST|2ND|3RD|(?![123])\\\\dTH)(?=\\\\b|[a-z_])',\r\n rsSeq = rsOptVar + reOptMod + rsOptJoin,\r\n rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,\r\n rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';\r\n\r\n /** Used to match apostrophes. */\r\n var reApos = RegExp(rsApos, 'g');\r\n\r\n /**\r\n * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and\r\n * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).\r\n */\r\n var reComboMark = RegExp(rsCombo, 'g');\r\n\r\n /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */\r\n var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');\r\n\r\n /** Used to match complex or compound words. */\r\n var reUnicodeWord = RegExp([\r\n rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',\r\n rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',\r\n rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,\r\n rsUpper + '+' + rsOptContrUpper,\r\n rsOrdUpper,\r\n rsOrdLower,\r\n rsDigits,\r\n rsEmoji\r\n ].join('|'), 'g');\r\n\r\n /** 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/). */\r\n var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']');\r\n\r\n /** Used to detect strings that need a more robust regexp to match words. */\r\n var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;\r\n\r\n /** Used to assign default `context` object properties. */\r\n var contextProps = [\r\n 'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',\r\n 'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',\r\n 'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',\r\n 'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',\r\n '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'\r\n ];\r\n\r\n /** Used to make template sourceURLs easier to identify. */\r\n var templateCounter = -1;\r\n\r\n /** Used to identify `toStringTag` values of typed arrays. */\r\n var typedArrayTags = {};\r\n typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =\r\n typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =\r\n typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =\r\n typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =\r\n typedArrayTags[uint32Tag] = true;\r\n typedArrayTags[argsTag] = typedArrayTags[arrayTag] =\r\n typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =\r\n typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =\r\n typedArrayTags[errorTag] = typedArrayTags[funcTag] =\r\n typedArrayTags[mapTag] = typedArrayTags[numberTag] =\r\n typedArrayTags[objectTag] = typedArrayTags[regexpTag] =\r\n typedArrayTags[setTag] = typedArrayTags[stringTag] =\r\n typedArrayTags[weakMapTag] = false;\r\n\r\n /** Used to identify `toStringTag` values supported by `_.clone`. */\r\n var cloneableTags = {};\r\n cloneableTags[argsTag] = cloneableTags[arrayTag] =\r\n cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =\r\n cloneableTags[boolTag] = cloneableTags[dateTag] =\r\n cloneableTags[float32Tag] = cloneableTags[float64Tag] =\r\n cloneableTags[int8Tag] = cloneableTags[int16Tag] =\r\n cloneableTags[int32Tag] = cloneableTags[mapTag] =\r\n cloneableTags[numberTag] = cloneableTags[objectTag] =\r\n cloneableTags[regexpTag] = cloneableTags[setTag] =\r\n cloneableTags[stringTag] = cloneableTags[symbolTag] =\r\n cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =\r\n cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;\r\n cloneableTags[errorTag] = cloneableTags[funcTag] =\r\n cloneableTags[weakMapTag] = false;\r\n\r\n /** Used to map Latin Unicode letters to basic Latin letters. */\r\n var deburredLetters = {\r\n // Latin-1 Supplement block.\r\n '\\xc0': 'A', '\\xc1': 'A', '\\xc2': 'A', '\\xc3': 'A', '\\xc4': 'A', '\\xc5': 'A',\r\n '\\xe0': 'a', '\\xe1': 'a', '\\xe2': 'a', '\\xe3': 'a', '\\xe4': 'a', '\\xe5': 'a',\r\n '\\xc7': 'C', '\\xe7': 'c',\r\n '\\xd0': 'D', '\\xf0': 'd',\r\n '\\xc8': 'E', '\\xc9': 'E', '\\xca': 'E', '\\xcb': 'E',\r\n '\\xe8': 'e', '\\xe9': 'e', '\\xea': 'e', '\\xeb': 'e',\r\n '\\xcc': 'I', '\\xcd': 'I', '\\xce': 'I', '\\xcf': 'I',\r\n '\\xec': 'i', '\\xed': 'i', '\\xee': 'i', '\\xef': 'i',\r\n '\\xd1': 'N', '\\xf1': 'n',\r\n '\\xd2': 'O', '\\xd3': 'O', '\\xd4': 'O', '\\xd5': 'O', '\\xd6': 'O', '\\xd8': 'O',\r\n '\\xf2': 'o', '\\xf3': 'o', '\\xf4': 'o', '\\xf5': 'o', '\\xf6': 'o', '\\xf8': 'o',\r\n '\\xd9': 'U', '\\xda': 'U', '\\xdb': 'U', '\\xdc': 'U',\r\n '\\xf9': 'u', '\\xfa': 'u', '\\xfb': 'u', '\\xfc': 'u',\r\n '\\xdd': 'Y', '\\xfd': 'y', '\\xff': 'y',\r\n '\\xc6': 'Ae', '\\xe6': 'ae',\r\n '\\xde': 'Th', '\\xfe': 'th',\r\n '\\xdf': 'ss',\r\n // Latin Extended-A block.\r\n '\\u0100': 'A', '\\u0102': 'A', '\\u0104': 'A',\r\n '\\u0101': 'a', '\\u0103': 'a', '\\u0105': 'a',\r\n '\\u0106': 'C', '\\u0108': 'C', '\\u010a': 'C', '\\u010c': 'C',\r\n '\\u0107': 'c', '\\u0109': 'c', '\\u010b': 'c', '\\u010d': 'c',\r\n '\\u010e': 'D', '\\u0110': 'D', '\\u010f': 'd', '\\u0111': 'd',\r\n '\\u0112': 'E', '\\u0114': 'E', '\\u0116': 'E', '\\u0118': 'E', '\\u011a': 'E',\r\n '\\u0113': 'e', '\\u0115': 'e', '\\u0117': 'e', '\\u0119': 'e', '\\u011b': 'e',\r\n '\\u011c': 'G', '\\u011e': 'G', '\\u0120': 'G', '\\u0122': 'G',\r\n '\\u011d': 'g', '\\u011f': 'g', '\\u0121': 'g', '\\u0123': 'g',\r\n '\\u0124': 'H', '\\u0126': 'H', '\\u0125': 'h', '\\u0127': 'h',\r\n '\\u0128': 'I', '\\u012a': 'I', '\\u012c': 'I', '\\u012e': 'I', '\\u0130': 'I',\r\n '\\u0129': 'i', '\\u012b': 'i', '\\u012d': 'i', '\\u012f': 'i', '\\u0131': 'i',\r\n '\\u0134': 'J', '\\u0135': 'j',\r\n '\\u0136': 'K', '\\u0137': 'k', '\\u0138': 'k',\r\n '\\u0139': 'L', '\\u013b': 'L', '\\u013d': 'L', '\\u013f': 'L', '\\u0141': 'L',\r\n '\\u013a': 'l', '\\u013c': 'l', '\\u013e': 'l', '\\u0140': 'l', '\\u0142': 'l',\r\n '\\u0143': 'N', '\\u0145': 'N', '\\u0147': 'N', '\\u014a': 'N',\r\n '\\u0144': 'n', '\\u0146': 'n', '\\u0148': 'n', '\\u014b': 'n',\r\n '\\u014c': 'O', '\\u014e': 'O', '\\u0150': 'O',\r\n '\\u014d': 'o', '\\u014f': 'o', '\\u0151': 'o',\r\n '\\u0154': 'R', '\\u0156': 'R', '\\u0158': 'R',\r\n '\\u0155': 'r', '\\u0157': 'r', '\\u0159': 'r',\r\n '\\u015a': 'S', '\\u015c': 'S', '\\u015e': 'S', '\\u0160': 'S',\r\n '\\u015b': 's', '\\u015d': 's', '\\u015f': 's', '\\u0161': 's',\r\n '\\u0162': 'T', '\\u0164': 'T', '\\u0166': 'T',\r\n '\\u0163': 't', '\\u0165': 't', '\\u0167': 't',\r\n '\\u0168': 'U', '\\u016a': 'U', '\\u016c': 'U', '\\u016e': 'U', '\\u0170': 'U', '\\u0172': 'U',\r\n '\\u0169': 'u', '\\u016b': 'u', '\\u016d': 'u', '\\u016f': 'u', '\\u0171': 'u', '\\u0173': 'u',\r\n '\\u0174': 'W', '\\u0175': 'w',\r\n '\\u0176': 'Y', '\\u0177': 'y', '\\u0178': 'Y',\r\n '\\u0179': 'Z', '\\u017b': 'Z', '\\u017d': 'Z',\r\n '\\u017a': 'z', '\\u017c': 'z', '\\u017e': 'z',\r\n '\\u0132': 'IJ', '\\u0133': 'ij',\r\n '\\u0152': 'Oe', '\\u0153': 'oe',\r\n '\\u0149': \"'n\", '\\u017f': 's'\r\n };\r\n\r\n /** Used to map characters to HTML entities. */\r\n var htmlEscapes = {\r\n '&': '&amp;',\r\n '<': '&lt;',\r\n '>': '&gt;',\r\n '\"': '&quot;',\r\n \"'\": '&#39;'\r\n };\r\n\r\n /** Used to map HTML entities to characters. */\r\n var htmlUnescapes = {\r\n '&amp;': '&',\r\n '&lt;': '<',\r\n '&gt;': '>',\r\n '&quot;': '\"',\r\n '&#39;': \"'\"\r\n };\r\n\r\n /** Used to escape characters for inclusion in compiled string literals. */\r\n var stringEscapes = {\r\n '\\\\': '\\\\',\r\n \"'\": \"'\",\r\n '\\n': 'n',\r\n '\\r': 'r',\r\n '\\u2028': 'u2028',\r\n '\\u2029': 'u2029'\r\n };\r\n\r\n /** Built-in method references without a dependency on `root`. */\r\n var freeParseFloat = parseFloat,\r\n freeParseInt = parseInt;\r\n\r\n /** Detect free variable `global` from Node.js. */\r\n var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\r\n\r\n /** Detect free variable `self`. */\r\n var freeSelf = typeof self == 'object' && self && self.Object === Object && self;\r\n\r\n /** Used as a reference to the global object. */\r\n var root = freeGlobal || freeSelf || Function('return this')();\r\n\r\n /** Detect free variable `exports`. */\r\n var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;\r\n\r\n /** Detect free variable `module`. */\r\n var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;\r\n\r\n /** Detect the popular CommonJS extension `module.exports`. */\r\n var moduleExports = freeModule && freeModule.exports === freeExports;\r\n\r\n /** Detect free variable `process` from Node.js. */\r\n var freeProcess = moduleExports && freeGlobal.process;\r\n\r\n /** Used to access faster Node.js helpers. */\r\n var nodeUtil = (function() {\r\n try {\r\n // Use `util.types` for Node.js 10+.\r\n var types = freeModule && freeModule.require && freeModule.require('util').types;\r\n\r\n if (types) {\r\n return types;\r\n }\r\n\r\n // Legacy `process.binding('util')` for Node.js < 10.\r\n return freeProcess && freeProcess.binding && freeProcess.binding('util');\r\n } catch (e) {}\r\n }());\r\n\r\n /* Node.js helper references. */\r\n var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,\r\n nodeIsDate = nodeUtil && nodeUtil.isDate,\r\n nodeIsMap = nodeUtil && nodeUtil.isMap,\r\n nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,\r\n nodeIsSet = nodeUtil && nodeUtil.isSet,\r\n nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;\r\n\r\n /*--------------------------------------------------------------------------*/\r\n\r\n /**\r\n * A faster alternative to `Function#apply`, this function invokes `func`\r\n * with the `this` binding of `thisArg` and the arguments of `args`.\r\n *\r\n * @private\r\n * @param {Function} func The function to invoke.\r\n * @param {*} thisArg The `this` binding of `func`.\r\n * @param {Array} args The arguments to invoke `func` with.\r\n * @returns {*} Returns the result of `func`.\r\n */\r\n function apply(func, thisArg, args) {\r\n switch (args.length) {\r\n case 0: return func.call(thisArg);\r\n case 1: return func.call(thisArg, args[0]);\r\n case 2: return func.call(thisArg, args[0], args[1]);\r\n case 3: return func.call(thisArg, args[0], args[1], args[2]);\r\n }\r\n return func.apply(thisArg, args);\r\n }\r\n\r\n /**\r\n * A specialized version of `baseAggregator` for arrays.\r\n *\r\n * @private\r\n * @param {Array} [array] The array to iterate over.\r\n * @param {Function} setter The function to set `accumulator` values.\r\n * @param {Function} iteratee The iteratee to transform keys.\r\n * @param {Object} accumulator The initial aggregated object.\r\n * @returns {Function} Returns `accumulator`.\r\n */\r\n function arrayAggregator(array, setter, iteratee, accumulator) {\r\n var index = -1,\r\n length = array == null ? 0 : array.length;\r\n\r\n while (++index < length) {\r\n var value = array[index];\r\n setter(accumulator, value, iteratee(value), array);\r\n }\r\n return accumulator;\r\n }\r\n\r\n /**\r\n * A specialized version of `_.forEach` for arrays without support for\r\n * iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array} [array] The array to iterate over.\r\n * @param {Function} iteratee The function invoked per iteration.\r\n * @returns {Array} Returns `array`.\r\n */\r\n function arrayEach(array, iteratee) {\r\n var index = -1,\r\n length = array == null ? 0 : array.length;\r\n\r\n while (++index < length) {\r\n if (iteratee(array[index], index, array) === false) {\r\n break;\r\n }\r\n }\r\n return array;\r\n }\r\n\r\n /**\r\n * A specialized version of `_.forEachRight` for arrays without support for\r\n * iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array} [array] The array to iterate over.\r\n * @param {Function} iteratee The function invoked per iteration.\r\n * @returns {Array} Returns `array`.\r\n */\r\n function arrayEachRight(array, iteratee) {\r\n var length = array == null ? 0 : array.length;\r\n\r\n while (length--) {\r\n if (iteratee(array[length], length, array) === false) {\r\n break;\r\n }\r\n }\r\n return array;\r\n }\r\n\r\n /**\r\n * A specialized version of `_.every` for arrays without support for\r\n * iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array} [array] The array to iterate over.\r\n * @param {Function} predicate The function invoked per iteration.\r\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\r\n * else `false`.\r\n */\r\n function arrayEvery(array, predicate) {\r\n var index = -1,\r\n length = array == null ? 0 : array.length;\r\n\r\n while (++index < length) {\r\n if (!predicate(array[index], index, array)) {\r\n return false;\r\n }\r\n }\r\n return true;\r\n }\r\n\r\n /**\r\n * A specialized version of `_.filter` for arrays without support for\r\n * iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array} [array] The array to iterate over.\r\n * @param {Function} predicate The function invoked per iteration.\r\n * @returns {Array} Returns the new filtered array.\r\n */\r\n function arrayFilter(array, predicate) {\r\n var index = -1,\r\n length = array == null ? 0 : array.length,\r\n resIndex = 0,\r\n result = [];\r\n\r\n while (++index < length) {\r\n var value = array[index];\r\n if (predicate(value, index, array)) {\r\n result[resIndex++] = value;\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * A specialized version of `_.includes` for arrays without support for\r\n * specifying an index to search from.\r\n *\r\n * @private\r\n * @param {Array} [array] The array to inspect.\r\n * @param {*} target The value to search for.\r\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\r\n */\r\n function arrayIncludes(array, value) {\r\n var length = array == null ? 0 : array.length;\r\n return !!length && baseIndexOf(array, value, 0) > -1;\r\n }\r\n\r\n /**\r\n * This function is like `arrayIncludes` except that it accepts a comparator.\r\n *\r\n * @private\r\n * @param {Array} [array] The array to inspect.\r\n * @param {*} target The value to search for.\r\n * @param {Function} comparator The comparator invoked per element.\r\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\r\n */\r\n function arrayIncludesWith(array, value, comparator) {\r\n var index = -1,\r\n length = array == null ? 0 : array.length;\r\n\r\n while (++index < length) {\r\n if (comparator(value, array[index])) {\r\n return true;\r\n }\r\n }\r\n return false;\r\n }\r\n\r\n /**\r\n * A specialized version of `_.map` for arrays without support for iteratee\r\n * shorthands.\r\n *\r\n * @private\r\n * @param {Array} [array] The array to iterate over.\r\n * @param {Function} iteratee The function invoked per iteration.\r\n * @returns {Array} Returns the new mapped array.\r\n */\r\n function arrayMap(array, iteratee) {\r\n var index = -1,\r\n length = array == null ? 0 : array.length,\r\n result = Array(length);\r\n\r\n while (++index < length) {\r\n result[index] = iteratee(array[index], index, array);\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Appends the elements of `values` to `array`.\r\n *\r\n * @private\r\n * @param {Array} array The array to modify.\r\n * @param {Array} values The values to append.\r\n * @returns {Array} Returns `array`.\r\n */\r\n function arrayPush(array, values) {\r\n var index = -1,\r\n length = values.length,\r\n offset = array.length;\r\n\r\n while (++index < length) {\r\n array[offset + index] = values[index];\r\n }\r\n return array;\r\n }\r\n\r\n /**\r\n * A specialized version of `_.reduce` for arrays without support for\r\n * iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array} [array] The array to iterate over.\r\n * @param {Function} iteratee The function invoked per iteration.\r\n * @param {*} [accumulator] The initial value.\r\n * @param {boolean} [initAccum] Specify using the first element of `array` as\r\n * the initial value.\r\n * @returns {*} Returns the accumulated value.\r\n */\r\n function arrayReduce(array, iteratee, accumulator, initAccum) {\r\n var index = -1,\r\n length = array == null ? 0 : array.length;\r\n\r\n if (initAccum && length) {\r\n accumulator = array[++index];\r\n }\r\n while (++index < length) {\r\n accumulator = iteratee(accumulator, array[index], index, array);\r\n }\r\n return accumulator;\r\n }\r\n\r\n /**\r\n * A specialized version of `_.reduceRight` for arrays without support for\r\n * iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array} [array] The array to iterate over.\r\n * @param {Function} iteratee The function invoked per iteration.\r\n * @param {*} [accumulator] The initial value.\r\n * @param {boolean} [initAccum] Specify using the last element of `array` as\r\n * the initial value.\r\n * @returns {*} Returns the accumulated value.\r\n */\r\n function arrayReduceRight(array, iteratee, accumulator, initAccum) {\r\n var length = array == null ? 0 : array.length;\r\n if (initAccum && length) {\r\n accumulator = array[--length];\r\n }\r\n while (length--) {\r\n accumulator = iteratee(accumulator, array[length], length, array);\r\n }\r\n return accumulator;\r\n }\r\n\r\n /**\r\n * A specialized version of `_.some` for arrays without support for iteratee\r\n * shorthands.\r\n *\r\n * @private\r\n * @param {Array} [array] The array to iterate over.\r\n * @param {Function} predicate The function invoked per iteration.\r\n * @returns {boolean} Returns `true` if any element passes the predicate check,\r\n * else `false`.\r\n */\r\n function arraySome(array, predicate) {\r\n var index = -1,\r\n length = array == null ? 0 : array.length;\r\n\r\n while (++index < length) {\r\n if (predicate(array[index], index, array)) {\r\n return true;\r\n }\r\n }\r\n return false;\r\n }\r\n\r\n /**\r\n * Gets the size of an ASCII `string`.\r\n *\r\n * @private\r\n * @param {string} string The string inspect.\r\n * @returns {number} Returns the string size.\r\n */\r\n var asciiSize = baseProperty('length');\r\n\r\n /**\r\n * Converts an ASCII `string` to an array.\r\n *\r\n * @private\r\n * @param {string} string The string to convert.\r\n * @returns {Array} Returns the converted array.\r\n */\r\n function asciiToArray(string) {\r\n return string.split('');\r\n }\r\n\r\n /**\r\n * Splits an ASCII `string` into an array of its words.\r\n *\r\n * @private\r\n * @param {string} The string to inspect.\r\n * @returns {Array} Returns the words of `string`.\r\n */\r\n function asciiWords(string) {\r\n return string.match(reAsciiWord) || [];\r\n }\r\n\r\n /**\r\n * The base implementation of methods like `_.findKey` and `_.findLastKey`,\r\n * without support for iteratee shorthands, which iterates over `collection`\r\n * using `eachFunc`.\r\n *\r\n * @private\r\n * @param {Array|Object} collection The collection to inspect.\r\n * @param {Function} predicate The function invoked per iteration.\r\n * @param {Function} eachFunc The function to iterate over `collection`.\r\n * @returns {*} Returns the found element or its key, else `undefined`.\r\n */\r\n function baseFindKey(collection, predicate, eachFunc) {\r\n var result;\r\n eachFunc(collection, function(value, key, collection) {\r\n if (predicate(value, key, collection)) {\r\n result = key;\r\n return false;\r\n }\r\n });\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.findIndex` and `_.findLastIndex` without\r\n * support for iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array} array The array to inspect.\r\n * @param {Function} predicate The function invoked per iteration.\r\n * @param {number} fromIndex The index to search from.\r\n * @param {boolean} [fromRight] Specify iterating from right to left.\r\n * @returns {number} Returns the index of the matched value, else `-1`.\r\n */\r\n function baseFindIndex(array, predicate, fromIndex, fromRight) {\r\n var length = array.length,\r\n index = fromIndex + (fromRight ? 1 : -1);\r\n\r\n while ((fromRight ? index-- : ++index < length)) {\r\n if (predicate(array[index], index, array)) {\r\n return index;\r\n }\r\n }\r\n return -1;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.indexOf` without `fromIndex` bounds checks.\r\n *\r\n * @private\r\n * @param {Array} array The array to inspect.\r\n * @param {*} value The value to search for.\r\n * @param {number} fromIndex The index to search from.\r\n * @returns {number} Returns the index of the matched value, else `-1`.\r\n */\r\n function baseIndexOf(array, value, fromIndex) {\r\n return value === value\r\n ? strictIndexOf(array, value, fromIndex)\r\n : baseFindIndex(array, baseIsNaN, fromIndex);\r\n }\r\n\r\n /**\r\n * This function is like `baseIndexOf` except that it accepts a comparator.\r\n *\r\n * @private\r\n * @param {Array} array The array to inspect.\r\n * @param {*} value The value to search for.\r\n * @param {number} fromIndex The index to search from.\r\n * @param {Function} comparator The comparator invoked per element.\r\n * @returns {number} Returns the index of the matched value, else `-1`.\r\n */\r\n function baseIndexOfWith(array, value, fromIndex, comparator) {\r\n var index = fromIndex - 1,\r\n length = array.length;\r\n\r\n while (++index < length) {\r\n if (comparator(array[index], value)) {\r\n return index;\r\n }\r\n }\r\n return -1;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.isNaN` without support for number objects.\r\n *\r\n * @private\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\r\n */\r\n function baseIsNaN(value) {\r\n return value !== value;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.mean` and `_.meanBy` without support for\r\n * iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array} array The array to iterate over.\r\n * @param {Function} iteratee The function invoked per iteration.\r\n * @returns {number} Returns the mean.\r\n */\r\n function baseMean(array, iteratee) {\r\n var length = array == null ? 0 : array.length;\r\n return length ? (baseSum(array, iteratee) / length) : NAN;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.property` without support for deep paths.\r\n *\r\n * @private\r\n * @param {string} key The key of the property to get.\r\n * @returns {Function} Returns the new accessor function.\r\n */\r\n function baseProperty(key) {\r\n return function(object) {\r\n return object == null ? undefined : object[key];\r\n };\r\n }\r\n\r\n /**\r\n * The base implementation of `_.propertyOf` without support for deep paths.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @returns {Function} Returns the new accessor function.\r\n */\r\n function basePropertyOf(object) {\r\n return function(key) {\r\n return object == null ? undefined : object[key];\r\n };\r\n }\r\n\r\n /**\r\n * The base implementation of `_.reduce` and `_.reduceRight`, without support\r\n * for iteratee shorthands, which iterates over `collection` using `eachFunc`.\r\n *\r\n * @private\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} iteratee The function invoked per iteration.\r\n * @param {*} accumulator The initial value.\r\n * @param {boolean} initAccum Specify using the first or last element of\r\n * `collection` as the initial value.\r\n * @param {Function} eachFunc The function to iterate over `collection`.\r\n * @returns {*} Returns the accumulated value.\r\n */\r\n function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {\r\n eachFunc(collection, function(value, index, collection) {\r\n accumulator = initAccum\r\n ? (initAccum = false, value)\r\n : iteratee(accumulator, value, index, collection);\r\n });\r\n return accumulator;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.sortBy` which uses `comparer` to define the\r\n * sort order of `array` and replaces criteria objects with their corresponding\r\n * values.\r\n *\r\n * @private\r\n * @param {Array} array The array to sort.\r\n * @param {Function} comparer The function to define sort order.\r\n * @returns {Array} Returns `array`.\r\n */\r\n function baseSortBy(array, comparer) {\r\n var length = array.length;\r\n\r\n array.sort(comparer);\r\n while (length--) {\r\n array[length] = array[length].value;\r\n }\r\n return array;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.sum` and `_.sumBy` without support for\r\n * iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array} array The array to iterate over.\r\n * @param {Function} iteratee The function invoked per iteration.\r\n * @returns {number} Returns the sum.\r\n */\r\n function baseSum(array, iteratee) {\r\n var result,\r\n index = -1,\r\n length = array.length;\r\n\r\n while (++index < length) {\r\n var current = iteratee(array[index]);\r\n if (current !== undefined) {\r\n result = result === undefined ? current : (result + current);\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.times` without support for iteratee shorthands\r\n * or max array length checks.\r\n *\r\n * @private\r\n * @param {number} n The number of times to invoke `iteratee`.\r\n * @param {Function} iteratee The function invoked per iteration.\r\n * @returns {Array} Returns the array of results.\r\n */\r\n function baseTimes(n, iteratee) {\r\n var index = -1,\r\n result = Array(n);\r\n\r\n while (++index < n) {\r\n result[index] = iteratee(index);\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array\r\n * of key-value pairs for `object` corresponding to the property names of `props`.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @param {Array} props The property names to get values for.\r\n * @returns {Object} Returns the key-value pairs.\r\n */\r\n function baseToPairs(object, props) {\r\n return arrayMap(props, function(key) {\r\n return [key, object[key]];\r\n });\r\n }\r\n\r\n /**\r\n * The base implementation of `_.trim`.\r\n *\r\n * @private\r\n * @param {string} string The string to trim.\r\n * @returns {string} Returns the trimmed string.\r\n */\r\n function baseTrim(string) {\r\n return string\r\n ? string.slice(0, trimmedEndIndex(string) + 1).replace(reTrimStart, '')\r\n : string;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.unary` without support for storing metadata.\r\n *\r\n * @private\r\n * @param {Function} func The function to cap arguments for.\r\n * @returns {Function} Returns the new capped function.\r\n */\r\n function baseUnary(func) {\r\n return function(value) {\r\n return func(value);\r\n };\r\n }\r\n\r\n /**\r\n * The base implementation of `_.values` and `_.valuesIn` which creates an\r\n * array of `object` property values corresponding to the property names\r\n * of `props`.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @param {Array} props The property names to get values for.\r\n * @returns {Object} Returns the array of property values.\r\n */\r\n function baseValues(object, props) {\r\n return arrayMap(props, function(key) {\r\n return object[key];\r\n });\r\n }\r\n\r\n /**\r\n * Checks if a `cache` value for `key` exists.\r\n *\r\n * @private\r\n * @param {Object} cache The cache to query.\r\n * @param {string} key The key of the entry to check.\r\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\r\n */\r\n function cacheHas(cache, key) {\r\n return cache.has(key);\r\n }\r\n\r\n /**\r\n * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol\r\n * that is not found in the character symbols.\r\n *\r\n * @private\r\n * @param {Array} strSymbols The string symbols to inspect.\r\n * @param {Array} chrSymbols The character symbols to find.\r\n * @returns {number} Returns the index of the first unmatched string symbol.\r\n */\r\n function charsStartIndex(strSymbols, chrSymbols) {\r\n var index = -1,\r\n length = strSymbols.length;\r\n\r\n while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\r\n return index;\r\n }\r\n\r\n /**\r\n * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol\r\n * that is not found in the character symbols.\r\n *\r\n * @private\r\n * @param {Array} strSymbols The string symbols to inspect.\r\n * @param {Array} chrSymbols The character symbols to find.\r\n * @returns {number} Returns the index of the last unmatched string symbol.\r\n */\r\n function charsEndIndex(strSymbols, chrSymbols) {\r\n var index = strSymbols.length;\r\n\r\n while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\r\n return index;\r\n }\r\n\r\n /**\r\n * Gets the number of `placeholder` occurrences in `array`.\r\n *\r\n * @private\r\n * @param {Array} array The array to inspect.\r\n * @param {*} placeholder The placeholder to search for.\r\n * @returns {number} Returns the placeholder count.\r\n */\r\n function countHolders(array, placeholder) {\r\n var length = array.length,\r\n result = 0;\r\n\r\n while (length--) {\r\n if (array[length] === placeholder) {\r\n ++result;\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A\r\n * letters to basic Latin letters.\r\n *\r\n * @private\r\n * @param {string} letter The matched letter to deburr.\r\n * @returns {string} Returns the deburred letter.\r\n */\r\n var deburrLetter = basePropertyOf(deburredLetters);\r\n\r\n /**\r\n * Used by `_.escape` to convert characters to HTML entities.\r\n *\r\n * @private\r\n * @param {string} chr The matched character to escape.\r\n * @returns {string} Returns the escaped character.\r\n */\r\n var escapeHtmlChar = basePropertyOf(htmlEscapes);\r\n\r\n /**\r\n * Used by `_.template` to escape characters for inclusion in compiled string literals.\r\n *\r\n * @private\r\n * @param {string} chr The matched character to escape.\r\n * @returns {string} Returns the escaped character.\r\n */\r\n function escapeStringChar(chr) {\r\n return '\\\\' + stringEscapes[chr];\r\n }\r\n\r\n /**\r\n * Gets the value at `key` of `object`.\r\n *\r\n * @private\r\n * @param {Object} [object] The object to query.\r\n * @param {string} key The key of the property to get.\r\n * @returns {*} Returns the property value.\r\n */\r\n function getValue(object, key) {\r\n return object == null ? undefined : object[key];\r\n }\r\n\r\n /**\r\n * Checks if `string` contains Unicode symbols.\r\n *\r\n * @private\r\n * @param {string} string The string to inspect.\r\n * @returns {boolean} Returns `true` if a symbol is found, else `false`.\r\n */\r\n function hasUnicode(string) {\r\n return reHasUnicode.test(string);\r\n }\r\n\r\n /**\r\n * Checks if `string` contains a word composed of Unicode symbols.\r\n *\r\n * @private\r\n * @param {string} string The string to inspect.\r\n * @returns {boolean} Returns `true` if a word is found, else `false`.\r\n */\r\n function hasUnicodeWord(string) {\r\n return reHasUnicodeWord.test(string);\r\n }\r\n\r\n /**\r\n * Converts `iterator` to an array.\r\n *\r\n * @private\r\n * @param {Object} iterator The iterator to convert.\r\n * @returns {Array} Returns the converted array.\r\n */\r\n function iteratorToArray(iterator) {\r\n var data,\r\n result = [];\r\n\r\n while (!(data = iterator.next()).done) {\r\n result.push(data.value);\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Converts `map` to its key-value pairs.\r\n *\r\n * @private\r\n * @param {Object} map The map to convert.\r\n * @returns {Array} Returns the key-value pairs.\r\n */\r\n function mapToArray(map) {\r\n var index = -1,\r\n result = Array(map.size);\r\n\r\n map.forEach(function(value, key) {\r\n result[++index] = [key, value];\r\n });\r\n return result;\r\n }\r\n\r\n /**\r\n * Creates a unary function that invokes `func` with its argument transformed.\r\n *\r\n * @private\r\n * @param {Function} func The function to wrap.\r\n * @param {Function} transform The argument transform.\r\n * @returns {Function} Returns the new function.\r\n */\r\n function overArg(func, transform) {\r\n return function(arg) {\r\n return func(transform(arg));\r\n };\r\n }\r\n\r\n /**\r\n * Replaces all `placeholder` elements in `array` with an internal placeholder\r\n * and returns an array of their indexes.\r\n *\r\n * @private\r\n * @param {Array} array The array to modify.\r\n * @param {*} placeholder The placeholder to replace.\r\n * @returns {Array} Returns the new array of placeholder indexes.\r\n */\r\n function replaceHolders(array, placeholder) {\r\n var index = -1,\r\n length = array.length,\r\n resIndex = 0,\r\n result = [];\r\n\r\n while (++index < length) {\r\n var value = array[index];\r\n if (value === placeholder || value === PLACEHOLDER) {\r\n array[index] = PLACEHOLDER;\r\n result[resIndex++] = index;\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Converts `set` to an array of its values.\r\n *\r\n * @private\r\n * @param {Object} set The set to convert.\r\n * @returns {Array} Returns the values.\r\n */\r\n function setToArray(set) {\r\n var index = -1,\r\n result = Array(set.size);\r\n\r\n set.forEach(function(value) {\r\n result[++index] = value;\r\n });\r\n return result;\r\n }\r\n\r\n /**\r\n * Converts `set` to its value-value pairs.\r\n *\r\n * @private\r\n * @param {Object} set The set to convert.\r\n * @returns {Array} Returns the value-value pairs.\r\n */\r\n function setToPairs(set) {\r\n var index = -1,\r\n result = Array(set.size);\r\n\r\n set.forEach(function(value) {\r\n result[++index] = [value, value];\r\n });\r\n return result;\r\n }\r\n\r\n /**\r\n * A specialized version of `_.indexOf` which performs strict equality\r\n * comparisons of values, i.e. `===`.\r\n *\r\n * @private\r\n * @param {Array} array The array to inspect.\r\n * @param {*} value The value to search for.\r\n * @param {number} fromIndex The index to search from.\r\n * @returns {number} Returns the index of the matched value, else `-1`.\r\n */\r\n function strictIndexOf(array, value, fromIndex) {\r\n var index = fromIndex - 1,\r\n length = array.length;\r\n\r\n while (++index < length) {\r\n if (array[index] === value) {\r\n return index;\r\n }\r\n }\r\n return -1;\r\n }\r\n\r\n /**\r\n * A specialized version of `_.lastIndexOf` which performs strict equality\r\n * comparisons of values, i.e. `===`.\r\n *\r\n * @private\r\n * @param {Array} array The array to inspect.\r\n * @param {*} value The value to search for.\r\n * @param {number} fromIndex The index to search from.\r\n * @returns {number} Returns the index of the matched value, else `-1`.\r\n */\r\n function strictLastIndexOf(array, value, fromIndex) {\r\n var index = fromIndex + 1;\r\n while (index--) {\r\n if (array[index] === value) {\r\n return index;\r\n }\r\n }\r\n return index;\r\n }\r\n\r\n /**\r\n * Gets the number of symbols in `string`.\r\n *\r\n * @private\r\n * @param {string} string The string to inspect.\r\n * @returns {number} Returns the string size.\r\n */\r\n function stringSize(string) {\r\n return hasUnicode(string)\r\n ? unicodeSize(string)\r\n : asciiSize(string);\r\n }\r\n\r\n /**\r\n * Converts `string` to an array.\r\n *\r\n * @private\r\n * @param {string} string The string to convert.\r\n * @returns {Array} Returns the converted array.\r\n */\r\n function stringToArray(string) {\r\n return hasUnicode(string)\r\n ? unicodeToArray(string)\r\n : asciiToArray(string);\r\n }\r\n\r\n /**\r\n * Used by `_.trim` and `_.trimEnd` to get the index of the last non-whitespace\r\n * character of `string`.\r\n *\r\n * @private\r\n * @param {string} string The string to inspect.\r\n * @returns {number} Returns the index of the last non-whitespace character.\r\n */\r\n function trimmedEndIndex(string) {\r\n var index = string.length;\r\n\r\n while (index-- && reWhitespace.test(string.charAt(index))) {}\r\n return index;\r\n }\r\n\r\n /**\r\n * Used by `_.unescape` to convert HTML entities to characters.\r\n *\r\n * @private\r\n * @param {string} chr The matched character to unescape.\r\n * @returns {string} Returns the unescaped character.\r\n */\r\n var unescapeHtmlChar = basePropertyOf(htmlUnescapes);\r\n\r\n /**\r\n * Gets the size of a Unicode `string`.\r\n *\r\n * @private\r\n * @param {string} string The string inspect.\r\n * @returns {number} Returns the string size.\r\n */\r\n function unicodeSize(string) {\r\n var result = reUnicode.lastIndex = 0;\r\n while (reUnicode.test(string)) {\r\n ++result;\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Converts a Unicode `string` to an array.\r\n *\r\n * @private\r\n * @param {string} string The string to convert.\r\n * @returns {Array} Returns the converted array.\r\n */\r\n function unicodeToArray(string) {\r\n return string.match(reUnicode) || [];\r\n }\r\n\r\n /**\r\n * Splits a Unicode `string` into an array of its words.\r\n *\r\n * @private\r\n * @param {string} The string to inspect.\r\n * @returns {Array} Returns the words of `string`.\r\n */\r\n function unicodeWords(string) {\r\n return string.match(reUnicodeWord) || [];\r\n }\r\n\r\n /*--------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Create a new pristine `lodash` function using the `context` object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 1.1.0\r\n * @category Util\r\n * @param {Object} [context=root] The context object.\r\n * @returns {Function} Returns a new `lodash` function.\r\n * @example\r\n *\r\n * _.mixin({ 'foo': _.constant('foo') });\r\n *\r\n * var lodash = _.runInContext();\r\n * lodash.mixin({ 'bar': lodash.constant('bar') });\r\n *\r\n * _.isFunction(_.foo);\r\n * // => true\r\n * _.isFunction(_.bar);\r\n * // => false\r\n *\r\n * lodash.isFunction(lodash.foo);\r\n * // => false\r\n * lodash.isFunction(lodash.bar);\r\n * // => true\r\n *\r\n * // Create a suped-up `defer` in Node.js.\r\n * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;\r\n */\r\n var runInContext = (function runInContext(context) {\r\n context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));\r\n\r\n /** Built-in constructor references. */\r\n var Array = context.Array,\r\n Date = context.Date,\r\n Error = context.Error,\r\n Function = context.Function,\r\n Math = context.Math,\r\n Object = context.Object,\r\n RegExp = context.RegExp,\r\n String = context.String,\r\n TypeError = context.TypeError;\r\n\r\n /** Used for built-in method references. */\r\n var arrayProto = Array.prototype,\r\n funcProto = Function.prototype,\r\n objectProto = Object.prototype;\r\n\r\n /** Used to detect overreaching core-js shims. */\r\n var coreJsData = context['__core-js_shared__'];\r\n\r\n /** Used to resolve the decompiled source of functions. */\r\n var funcToString = funcProto.toString;\r\n\r\n /** Used to check objects for own properties. */\r\n var hasOwnProperty = objectProto.hasOwnProperty;\r\n\r\n /** Used to generate unique IDs. */\r\n var idCounter = 0;\r\n\r\n /** Used to detect methods masquerading as native. */\r\n var maskSrcKey = (function() {\r\n var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');\r\n return uid ? ('Symbol(src)_1.' + uid) : '';\r\n }());\r\n\r\n /**\r\n * Used to resolve the\r\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\r\n * of values.\r\n */\r\n var nativeObjectToString = objectProto.toString;\r\n\r\n /** Used to infer the `Object` constructor. */\r\n var objectCtorString = funcToString.call(Object);\r\n\r\n /** Used to restore the original `_` reference in `_.noConflict`. */\r\n var oldDash = root._;\r\n\r\n /** Used to detect if a method is native. */\r\n var reIsNative = RegExp('^' +\r\n funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&')\r\n .replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$'\r\n );\r\n\r\n /** Built-in value references. */\r\n var Buffer = moduleExports ? context.Buffer : undefined,\r\n Symbol = context.Symbol,\r\n Uint8Array = context.Uint8Array,\r\n allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,\r\n getPrototype = overArg(Object.getPrototypeOf, Object),\r\n objectCreate = Object.create,\r\n propertyIsEnumerable = objectProto.propertyIsEnumerable,\r\n splice = arrayProto.splice,\r\n spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined,\r\n symIterator = Symbol ? Symbol.iterator : undefined,\r\n symToStringTag = Symbol ? Symbol.toStringTag : undefined;\r\n\r\n var defineProperty = (function() {\r\n try {\r\n var func = getNative(Object, 'defineProperty');\r\n func({}, '', {});\r\n return func;\r\n } catch (e) {}\r\n }());\r\n\r\n /** Mocked built-ins. */\r\n var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,\r\n ctxNow = Date && Date.now !== root.Date.now && Date.now,\r\n ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;\r\n\r\n /* Built-in method references for those with the same name as other `lodash` methods. */\r\n var nativeCeil = Math.ceil,\r\n nativeFloor = Math.floor,\r\n nativeGetSymbols = Object.getOwnPropertySymbols,\r\n nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,\r\n nativeIsFinite = context.isFinite,\r\n nativeJoin = arrayProto.join,\r\n nativeKeys = overArg(Object.keys, Object),\r\n nativeMax = Math.max,\r\n nativeMin = Math.min,\r\n nativeNow = Date.now,\r\n nativeParseInt = context.parseInt,\r\n nativeRandom = Math.random,\r\n nativeReverse = arrayProto.reverse;\r\n\r\n /* Built-in method references that are verified to be native. */\r\n var DataView = getNative(context, 'DataView'),\r\n Map = getNative(context, 'Map'),\r\n Promise = getNative(context, 'Promise'),\r\n Set = getNative(context, 'Set'),\r\n WeakMap = getNative(context, 'WeakMap'),\r\n nativeCreate = getNative(Object, 'create');\r\n\r\n /** Used to store function metadata. */\r\n var metaMap = WeakMap && new WeakMap;\r\n\r\n /** Used to lookup unminified function names. */\r\n var realNames = {};\r\n\r\n /** Used to detect maps, sets, and weakmaps. */\r\n var dataViewCtorString = toSource(DataView),\r\n mapCtorString = toSource(Map),\r\n promiseCtorString = toSource(Promise),\r\n setCtorString = toSource(Set),\r\n weakMapCtorString = toSource(WeakMap);\r\n\r\n /** Used to convert symbols to primitives and strings. */\r\n var symbolProto = Symbol ? Symbol.prototype : undefined,\r\n symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,\r\n symbolToString = symbolProto ? symbolProto.toString : undefined;\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Creates a `lodash` object which wraps `value` to enable implicit method\r\n * chain sequences. Methods that operate on and return arrays, collections,\r\n * and functions can be chained together. Methods that retrieve a single value\r\n * or may return a primitive value will automatically end the chain sequence\r\n * and return the unwrapped value. Otherwise, the value must be unwrapped\r\n * with `_#value`.\r\n *\r\n * Explicit chain sequences, which must be unwrapped with `_#value`, may be\r\n * enabled using `_.chain`.\r\n *\r\n * The execution of chained methods is lazy, that is, it's deferred until\r\n * `_#value` is implicitly or explicitly called.\r\n *\r\n * Lazy evaluation allows several methods to support shortcut fusion.\r\n * Shortcut fusion is an optimization to merge iteratee calls; this avoids\r\n * the creation of intermediate arrays and can greatly reduce the number of\r\n * iteratee executions. Sections of a chain sequence qualify for shortcut\r\n * fusion if the section is applied to an array and iteratees accept only\r\n * one argument. The heuristic for whether a section qualifies for shortcut\r\n * fusion is subject to change.\r\n *\r\n * Chaining is supported in custom builds as long as the `_#value` method is\r\n * directly or indirectly included in the build.\r\n *\r\n * In addition to lodash methods, wrappers have `Array` and `String` methods.\r\n *\r\n * The wrapper `Array` methods are:\r\n * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`\r\n *\r\n * The wrapper `String` methods are:\r\n * `replace` and `split`\r\n *\r\n * The wrapper methods that support shortcut fusion are:\r\n * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,\r\n * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,\r\n * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`\r\n *\r\n * The chainable wrapper methods are:\r\n * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,\r\n * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,\r\n * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,\r\n * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,\r\n * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,\r\n * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,\r\n * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,\r\n * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,\r\n * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,\r\n * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,\r\n * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,\r\n * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,\r\n * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,\r\n * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,\r\n * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,\r\n * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,\r\n * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,\r\n * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,\r\n * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,\r\n * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,\r\n * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,\r\n * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,\r\n * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,\r\n * `zipObject`, `zipObjectDeep`, and `zipWith`\r\n *\r\n * The wrapper methods that are **not** chainable by default are:\r\n * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,\r\n * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,\r\n * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,\r\n * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,\r\n * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,\r\n * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,\r\n * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,\r\n * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,\r\n * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,\r\n * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,\r\n * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,\r\n * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,\r\n * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,\r\n * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,\r\n * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,\r\n * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,\r\n * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,\r\n * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,\r\n * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,\r\n * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,\r\n * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,\r\n * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,\r\n * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,\r\n * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,\r\n * `upperFirst`, `value`, and `words`\r\n *\r\n * @name _\r\n * @constructor\r\n * @category Seq\r\n * @param {*} value The value to wrap in a `lodash` instance.\r\n * @returns {Object} Returns the new `lodash` wrapper instance.\r\n * @example\r\n *\r\n * function square(n) {\r\n * return n * n;\r\n * }\r\n *\r\n * var wrapped = _([1, 2, 3]);\r\n *\r\n * // Returns an unwrapped value.\r\n * wrapped.reduce(_.add);\r\n * // => 6\r\n *\r\n * // Returns a wrapped value.\r\n * var squares = wrapped.map(square);\r\n *\r\n * _.isArray(squares);\r\n * // => false\r\n *\r\n * _.isArray(squares.value());\r\n * // => true\r\n */\r\n function lodash(value) {\r\n if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {\r\n if (value instanceof LodashWrapper) {\r\n return value;\r\n }\r\n if (hasOwnProperty.call(value, '__wrapped__')) {\r\n return wrapperClone(value);\r\n }\r\n }\r\n return new LodashWrapper(value);\r\n }\r\n\r\n /**\r\n * The base implementation of `_.create` without support for assigning\r\n * properties to the created object.\r\n *\r\n * @private\r\n * @param {Object} proto The object to inherit from.\r\n * @returns {Object} Returns the new object.\r\n */\r\n var baseCreate = (function() {\r\n function object() {}\r\n return function(proto) {\r\n if (!isObject(proto)) {\r\n return {};\r\n }\r\n if (objectCreate) {\r\n return objectCreate(proto);\r\n }\r\n object.prototype = proto;\r\n var result = new object;\r\n object.prototype = undefined;\r\n return result;\r\n };\r\n }());\r\n\r\n /**\r\n * The function whose prototype chain sequence wrappers inherit from.\r\n *\r\n * @private\r\n */\r\n function baseLodash() {\r\n // No operation performed.\r\n }\r\n\r\n /**\r\n * The base constructor for creating `lodash` wrapper objects.\r\n *\r\n * @private\r\n * @param {*} value The value to wrap.\r\n * @param {boolean} [chainAll] Enable explicit method chain sequences.\r\n */\r\n function LodashWrapper(value, chainAll) {\r\n this.__wrapped__ = value;\r\n this.__actions__ = [];\r\n this.__chain__ = !!chainAll;\r\n this.__index__ = 0;\r\n this.__values__ = undefined;\r\n }\r\n\r\n /**\r\n * By default, the template delimiters used by lodash are like those in\r\n * embedded Ruby (ERB) as well as ES2015 template strings. Change the\r\n * following template settings to use alternative delimiters.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @type {Object}\r\n */\r\n lodash.templateSettings = {\r\n\r\n /**\r\n * Used to detect `data` property values to be HTML-escaped.\r\n *\r\n * @memberOf _.templateSettings\r\n * @type {RegExp}\r\n */\r\n 'escape': reEscape,\r\n\r\n /**\r\n * Used to detect code to be evaluated.\r\n *\r\n * @memberOf _.templateSettings\r\n * @type {RegExp}\r\n */\r\n 'evaluate': reEvaluate,\r\n\r\n /**\r\n * Used to detect `data` property values to inject.\r\n *\r\n * @memberOf _.templateSettings\r\n * @type {RegExp}\r\n */\r\n 'interpolate': reInterpolate,\r\n\r\n /**\r\n * Used to reference the data object in the template text.\r\n *\r\n * @memberOf _.templateSettings\r\n * @type {string}\r\n */\r\n 'variable': '',\r\n\r\n /**\r\n * Used to import variables into the compiled template.\r\n *\r\n * @memberOf _.templateSettings\r\n * @type {Object}\r\n */\r\n 'imports': {\r\n\r\n /**\r\n * A reference to the `lodash` function.\r\n *\r\n * @memberOf _.templateSettings.imports\r\n * @type {Function}\r\n */\r\n '_': lodash\r\n }\r\n };\r\n\r\n // Ensure wrappers are instances of `baseLodash`.\r\n lodash.prototype = baseLodash.prototype;\r\n lodash.prototype.constructor = lodash;\r\n\r\n LodashWrapper.prototype = baseCreate(baseLodash.prototype);\r\n LodashWrapper.prototype.constructor = LodashWrapper;\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.\r\n *\r\n * @private\r\n * @constructor\r\n * @param {*} value The value to wrap.\r\n */\r\n function LazyWrapper(value) {\r\n this.__wrapped__ = value;\r\n this.__actions__ = [];\r\n this.__dir__ = 1;\r\n this.__filtered__ = false;\r\n this.__iteratees__ = [];\r\n this.__takeCount__ = MAX_ARRAY_LENGTH;\r\n this.__views__ = [];\r\n }\r\n\r\n /**\r\n * Creates a clone of the lazy wrapper object.\r\n *\r\n * @private\r\n * @name clone\r\n * @memberOf LazyWrapper\r\n * @returns {Object} Returns the cloned `LazyWrapper` object.\r\n */\r\n function lazyClone() {\r\n var result = new LazyWrapper(this.__wrapped__);\r\n result.__actions__ = copyArray(this.__actions__);\r\n result.__dir__ = this.__dir__;\r\n result.__filtered__ = this.__filtered__;\r\n result.__iteratees__ = copyArray(this.__iteratees__);\r\n result.__takeCount__ = this.__takeCount__;\r\n result.__views__ = copyArray(this.__views__);\r\n return result;\r\n }\r\n\r\n /**\r\n * Reverses the direction of lazy iteration.\r\n *\r\n * @private\r\n * @name reverse\r\n * @memberOf LazyWrapper\r\n * @returns {Object} Returns the new reversed `LazyWrapper` object.\r\n */\r\n function lazyReverse() {\r\n if (this.__filtered__) {\r\n var result = new LazyWrapper(this);\r\n result.__dir__ = -1;\r\n result.__filtered__ = true;\r\n } else {\r\n result = this.clone();\r\n result.__dir__ *= -1;\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Extracts the unwrapped value from its lazy wrapper.\r\n *\r\n * @private\r\n * @name value\r\n * @memberOf LazyWrapper\r\n * @returns {*} Returns the unwrapped value.\r\n */\r\n function lazyValue() {\r\n var array = this.__wrapped__.value(),\r\n dir = this.__dir__,\r\n isArr = isArray(array),\r\n isRight = dir < 0,\r\n arrLength = isArr ? array.length : 0,\r\n view = getView(0, arrLength, this.__views__),\r\n start = view.start,\r\n end = view.end,\r\n length = end - start,\r\n index = isRight ? end : (start - 1),\r\n iteratees = this.__iteratees__,\r\n iterLength = iteratees.length,\r\n resIndex = 0,\r\n takeCount = nativeMin(length, this.__takeCount__);\r\n\r\n if (!isArr || (!isRight && arrLength == length && takeCount == length)) {\r\n return baseWrapperValue(array, this.__actions__);\r\n }\r\n var result = [];\r\n\r\n outer:\r\n while (length-- && resIndex < takeCount) {\r\n index += dir;\r\n\r\n var iterIndex = -1,\r\n value = array[index];\r\n\r\n while (++iterIndex < iterLength) {\r\n var data = iteratees[iterIndex],\r\n iteratee = data.iteratee,\r\n type = data.type,\r\n computed = iteratee(value);\r\n\r\n if (type == LAZY_MAP_FLAG) {\r\n value = computed;\r\n } else if (!computed) {\r\n if (type == LAZY_FILTER_FLAG) {\r\n continue outer;\r\n } else {\r\n break outer;\r\n }\r\n }\r\n }\r\n result[resIndex++] = value;\r\n }\r\n return result;\r\n }\r\n\r\n // Ensure `LazyWrapper` is an instance of `baseLodash`.\r\n LazyWrapper.prototype = baseCreate(baseLodash.prototype);\r\n LazyWrapper.prototype.constructor = LazyWrapper;\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Creates a hash object.\r\n *\r\n * @private\r\n * @constructor\r\n * @param {Array} [entries] The key-value pairs to cache.\r\n */\r\n function Hash(entries) {\r\n var index = -1,\r\n length = entries == null ? 0 : entries.length;\r\n\r\n this.clear();\r\n while (++index < length) {\r\n var entry = entries[index];\r\n this.set(entry[0], entry[1]);\r\n }\r\n }\r\n\r\n /**\r\n * Removes all key-value entries from the hash.\r\n *\r\n * @private\r\n * @name clear\r\n * @memberOf Hash\r\n */\r\n function hashClear() {\r\n this.__data__ = nativeCreate ? nativeCreate(null) : {};\r\n this.size = 0;\r\n }\r\n\r\n /**\r\n * Removes `key` and its value from the hash.\r\n *\r\n * @private\r\n * @name delete\r\n * @memberOf Hash\r\n * @param {Object} hash The hash to modify.\r\n * @param {string} key The key of the value to remove.\r\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\r\n */\r\n function hashDelete(key) {\r\n var result = this.has(key) && delete this.__data__[key];\r\n this.size -= result ? 1 : 0;\r\n return result;\r\n }\r\n\r\n /**\r\n * Gets the hash value for `key`.\r\n *\r\n * @private\r\n * @name get\r\n * @memberOf Hash\r\n * @param {string} key The key of the value to get.\r\n * @returns {*} Returns the entry value.\r\n */\r\n function hashGet(key) {\r\n var data = this.__data__;\r\n if (nativeCreate) {\r\n var result = data[key];\r\n return result === HASH_UNDEFINED ? undefined : result;\r\n }\r\n return hasOwnProperty.call(data, key) ? data[key] : undefined;\r\n }\r\n\r\n /**\r\n * Checks if a hash value for `key` exists.\r\n *\r\n * @private\r\n * @name has\r\n * @memberOf Hash\r\n * @param {string} key The key of the entry to check.\r\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\r\n */\r\n function hashHas(key) {\r\n var data = this.__data__;\r\n return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);\r\n }\r\n\r\n /**\r\n * Sets the hash `key` to `value`.\r\n *\r\n * @private\r\n * @name set\r\n * @memberOf Hash\r\n * @param {string} key The key of the value to set.\r\n * @param {*} value The value to set.\r\n * @returns {Object} Returns the hash instance.\r\n */\r\n function hashSet(key, value) {\r\n var data = this.__data__;\r\n this.size += this.has(key) ? 0 : 1;\r\n data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;\r\n return this;\r\n }\r\n\r\n // Add methods to `Hash`.\r\n Hash.prototype.clear = hashClear;\r\n Hash.prototype['delete'] = hashDelete;\r\n Hash.prototype.get = hashGet;\r\n Hash.prototype.has = hashHas;\r\n Hash.prototype.set = hashSet;\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Creates an list cache object.\r\n *\r\n * @private\r\n * @constructor\r\n * @param {Array} [entries] The key-value pairs to cache.\r\n */\r\n function ListCache(entries) {\r\n var index = -1,\r\n length = entries == null ? 0 : entries.length;\r\n\r\n this.clear();\r\n while (++index < length) {\r\n var entry = entries[index];\r\n this.set(entry[0], entry[1]);\r\n }\r\n }\r\n\r\n /**\r\n * Removes all key-value entries from the list cache.\r\n *\r\n * @private\r\n * @name clear\r\n * @memberOf ListCache\r\n */\r\n function listCacheClear() {\r\n this.__data__ = [];\r\n this.size = 0;\r\n }\r\n\r\n /**\r\n * Removes `key` and its value from the list cache.\r\n *\r\n * @private\r\n * @name delete\r\n * @memberOf ListCache\r\n * @param {string} key The key of the value to remove.\r\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\r\n */\r\n function listCacheDelete(key) {\r\n var data = this.__data__,\r\n index = assocIndexOf(data, key);\r\n\r\n if (index < 0) {\r\n return false;\r\n }\r\n var lastIndex = data.length - 1;\r\n if (index == lastIndex) {\r\n data.pop();\r\n } else {\r\n splice.call(data, index, 1);\r\n }\r\n --this.size;\r\n return true;\r\n }\r\n\r\n /**\r\n * Gets the list cache value for `key`.\r\n *\r\n * @private\r\n * @name get\r\n * @memberOf ListCache\r\n * @param {string} key The key of the value to get.\r\n * @returns {*} Returns the entry value.\r\n */\r\n function listCacheGet(key) {\r\n var data = this.__data__,\r\n index = assocIndexOf(data, key);\r\n\r\n return index < 0 ? undefined : data[index][1];\r\n }\r\n\r\n /**\r\n * Checks if a list cache value for `key` exists.\r\n *\r\n * @private\r\n * @name has\r\n * @memberOf ListCache\r\n * @param {string} key The key of the entry to check.\r\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\r\n */\r\n function listCacheHas(key) {\r\n return assocIndexOf(this.__data__, key) > -1;\r\n }\r\n\r\n /**\r\n * Sets the list cache `key` to `value`.\r\n *\r\n * @private\r\n * @name set\r\n * @memberOf ListCache\r\n * @param {string} key The key of the value to set.\r\n * @param {*} value The value to set.\r\n * @returns {Object} Returns the list cache instance.\r\n */\r\n function listCacheSet(key, value) {\r\n var data = this.__data__,\r\n index = assocIndexOf(data, key);\r\n\r\n if (index < 0) {\r\n ++this.size;\r\n data.push([key, value]);\r\n } else {\r\n data[index][1] = value;\r\n }\r\n return this;\r\n }\r\n\r\n // Add methods to `ListCache`.\r\n ListCache.prototype.clear = listCacheClear;\r\n ListCache.prototype['delete'] = listCacheDelete;\r\n ListCache.prototype.get = listCacheGet;\r\n ListCache.prototype.has = listCacheHas;\r\n ListCache.prototype.set = listCacheSet;\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Creates a map cache object to store key-value pairs.\r\n *\r\n * @private\r\n * @constructor\r\n * @param {Array} [entries] The key-value pairs to cache.\r\n */\r\n function MapCache(entries) {\r\n var index = -1,\r\n length = entries == null ? 0 : entries.length;\r\n\r\n this.clear();\r\n while (++index < length) {\r\n var entry = entries[index];\r\n this.set(entry[0], entry[1]);\r\n }\r\n }\r\n\r\n /**\r\n * Removes all key-value entries from the map.\r\n *\r\n * @private\r\n * @name clear\r\n * @memberOf MapCache\r\n */\r\n function mapCacheClear() {\r\n this.size = 0;\r\n this.__data__ = {\r\n 'hash': new Hash,\r\n 'map': new (Map || ListCache),\r\n 'string': new Hash\r\n };\r\n }\r\n\r\n /**\r\n * Removes `key` and its value from the map.\r\n *\r\n * @private\r\n * @name delete\r\n * @memberOf MapCache\r\n * @param {string} key The key of the value to remove.\r\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\r\n */\r\n function mapCacheDelete(key) {\r\n var result = getMapData(this, key)['delete'](key);\r\n this.size -= result ? 1 : 0;\r\n return result;\r\n }\r\n\r\n /**\r\n * Gets the map value for `key`.\r\n *\r\n * @private\r\n * @name get\r\n * @memberOf MapCache\r\n * @param {string} key The key of the value to get.\r\n * @returns {*} Returns the entry value.\r\n */\r\n function mapCacheGet(key) {\r\n return getMapData(this, key).get(key);\r\n }\r\n\r\n /**\r\n * Checks if a map value for `key` exists.\r\n *\r\n * @private\r\n * @name has\r\n * @memberOf MapCache\r\n * @param {string} key The key of the entry to check.\r\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\r\n */\r\n function mapCacheHas(key) {\r\n return getMapData(this, key).has(key);\r\n }\r\n\r\n /**\r\n * Sets the map `key` to `value`.\r\n *\r\n * @private\r\n * @name set\r\n * @memberOf MapCache\r\n * @param {string} key The key of the value to set.\r\n * @param {*} value The value to set.\r\n * @returns {Object} Returns the map cache instance.\r\n */\r\n function mapCacheSet(key, value) {\r\n var data = getMapData(this, key),\r\n size = data.size;\r\n\r\n data.set(key, value);\r\n this.size += data.size == size ? 0 : 1;\r\n return this;\r\n }\r\n\r\n // Add methods to `MapCache`.\r\n MapCache.prototype.clear = mapCacheClear;\r\n MapCache.prototype['delete'] = mapCacheDelete;\r\n MapCache.prototype.get = mapCacheGet;\r\n MapCache.prototype.has = mapCacheHas;\r\n MapCache.prototype.set = mapCacheSet;\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n *\r\n * Creates an array cache object to store unique values.\r\n *\r\n * @private\r\n * @constructor\r\n * @param {Array} [values] The values to cache.\r\n */\r\n function SetCache(values) {\r\n var index = -1,\r\n length = values == null ? 0 : values.length;\r\n\r\n this.__data__ = new MapCache;\r\n while (++index < length) {\r\n this.add(values[index]);\r\n }\r\n }\r\n\r\n /**\r\n * Adds `value` to the array cache.\r\n *\r\n * @private\r\n * @name add\r\n * @memberOf SetCache\r\n * @alias push\r\n * @param {*} value The value to cache.\r\n * @returns {Object} Returns the cache instance.\r\n */\r\n function setCacheAdd(value) {\r\n this.__data__.set(value, HASH_UNDEFINED);\r\n return this;\r\n }\r\n\r\n /**\r\n * Checks if `value` is in the array cache.\r\n *\r\n * @private\r\n * @name has\r\n * @memberOf SetCache\r\n * @param {*} value The value to search for.\r\n * @returns {number} Returns `true` if `value` is found, else `false`.\r\n */\r\n function setCacheHas(value) {\r\n return this.__data__.has(value);\r\n }\r\n\r\n // Add methods to `SetCache`.\r\n SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;\r\n SetCache.prototype.has = setCacheHas;\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Creates a stack cache object to store key-value pairs.\r\n *\r\n * @private\r\n * @constructor\r\n * @param {Array} [entries] The key-value pairs to cache.\r\n */\r\n function Stack(entries) {\r\n var data = this.__data__ = new ListCache(entries);\r\n this.size = data.size;\r\n }\r\n\r\n /**\r\n * Removes all key-value entries from the stack.\r\n *\r\n * @private\r\n * @name clear\r\n * @memberOf Stack\r\n */\r\n function stackClear() {\r\n this.__data__ = new ListCache;\r\n this.size = 0;\r\n }\r\n\r\n /**\r\n * Removes `key` and its value from the stack.\r\n *\r\n * @private\r\n * @name delete\r\n * @memberOf Stack\r\n * @param {string} key The key of the value to remove.\r\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\r\n */\r\n function stackDelete(key) {\r\n var data = this.__data__,\r\n result = data['delete'](key);\r\n\r\n this.size = data.size;\r\n return result;\r\n }\r\n\r\n /**\r\n * Gets the stack value for `key`.\r\n *\r\n * @private\r\n * @name get\r\n * @memberOf Stack\r\n * @param {string} key The key of the value to get.\r\n * @returns {*} Returns the entry value.\r\n */\r\n function stackGet(key) {\r\n return this.__data__.get(key);\r\n }\r\n\r\n /**\r\n * Checks if a stack value for `key` exists.\r\n *\r\n * @private\r\n * @name has\r\n * @memberOf Stack\r\n * @param {string} key The key of the entry to check.\r\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\r\n */\r\n function stackHas(key) {\r\n return this.__data__.has(key);\r\n }\r\n\r\n /**\r\n * Sets the stack `key` to `value`.\r\n *\r\n * @private\r\n * @name set\r\n * @memberOf Stack\r\n * @param {string} key The key of the value to set.\r\n * @param {*} value The value to set.\r\n * @returns {Object} Returns the stack cache instance.\r\n */\r\n function stackSet(key, value) {\r\n var data = this.__data__;\r\n if (data instanceof ListCache) {\r\n var pairs = data.__data__;\r\n if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {\r\n pairs.push([key, value]);\r\n this.size = ++data.size;\r\n return this;\r\n }\r\n data = this.__data__ = new MapCache(pairs);\r\n }\r\n data.set(key, value);\r\n this.size = data.size;\r\n return this;\r\n }\r\n\r\n // Add methods to `Stack`.\r\n Stack.prototype.clear = stackClear;\r\n Stack.prototype['delete'] = stackDelete;\r\n Stack.prototype.get = stackGet;\r\n Stack.prototype.has = stackHas;\r\n Stack.prototype.set = stackSet;\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Creates an array of the enumerable property names of the array-like `value`.\r\n *\r\n * @private\r\n * @param {*} value The value to query.\r\n * @param {boolean} inherited Specify returning inherited property names.\r\n * @returns {Array} Returns the array of property names.\r\n */\r\n function arrayLikeKeys(value, inherited) {\r\n var isArr = isArray(value),\r\n isArg = !isArr && isArguments(value),\r\n isBuff = !isArr && !isArg && isBuffer(value),\r\n isType = !isArr && !isArg && !isBuff && isTypedArray(value),\r\n skipIndexes = isArr || isArg || isBuff || isType,\r\n result = skipIndexes ? baseTimes(value.length, String) : [],\r\n length = result.length;\r\n\r\n for (var key in value) {\r\n if ((inherited || hasOwnProperty.call(value, key)) &&\r\n !(skipIndexes && (\r\n // Safari 9 has enumerable `arguments.length` in strict mode.\r\n key == 'length' ||\r\n // Node.js 0.10 has enumerable non-index properties on buffers.\r\n (isBuff && (key == 'offset' || key == 'parent')) ||\r\n // PhantomJS 2 has enumerable non-index properties on typed arrays.\r\n (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||\r\n // Skip index properties.\r\n isIndex(key, length)\r\n ))) {\r\n result.push(key);\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * A specialized version of `_.sample` for arrays.\r\n *\r\n * @private\r\n * @param {Array} array The array to sample.\r\n * @returns {*} Returns the random element.\r\n */\r\n function arraySample(array) {\r\n var length = array.length;\r\n return length ? array[baseRandom(0, length - 1)] : undefined;\r\n }\r\n\r\n /**\r\n * A specialized version of `_.sampleSize` for arrays.\r\n *\r\n * @private\r\n * @param {Array} array The array to sample.\r\n * @param {number} n The number of elements to sample.\r\n * @returns {Array} Returns the random elements.\r\n */\r\n function arraySampleSize(array, n) {\r\n return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));\r\n }\r\n\r\n /**\r\n * A specialized version of `_.shuffle` for arrays.\r\n *\r\n * @private\r\n * @param {Array} array The array to shuffle.\r\n * @returns {Array} Returns the new shuffled array.\r\n */\r\n function arrayShuffle(array) {\r\n return shuffleSelf(copyArray(array));\r\n }\r\n\r\n /**\r\n * This function is like `assignValue` except that it doesn't assign\r\n * `undefined` values.\r\n *\r\n * @private\r\n * @param {Object} object The object to modify.\r\n * @param {string} key The key of the property to assign.\r\n * @param {*} value The value to assign.\r\n */\r\n function assignMergeValue(object, key, value) {\r\n if ((value !== undefined && !eq(object[key], value)) ||\r\n (value === undefined && !(key in object))) {\r\n baseAssignValue(object, key, value);\r\n }\r\n }\r\n\r\n /**\r\n * Assigns `value` to `key` of `object` if the existing value is not equivalent\r\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\r\n * for equality comparisons.\r\n *\r\n * @private\r\n * @param {Object} object The object to modify.\r\n * @param {string} key The key of the property to assign.\r\n * @param {*} value The value to assign.\r\n */\r\n function assignValue(object, key, value) {\r\n var objValue = object[key];\r\n if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||\r\n (value === undefined && !(key in object))) {\r\n baseAssignValue(object, key, value);\r\n }\r\n }\r\n\r\n /**\r\n * Gets the index at which the `key` is found in `array` of key-value pairs.\r\n *\r\n * @private\r\n * @param {Array} array The array to inspect.\r\n * @param {*} key The key to search for.\r\n * @returns {number} Returns the index of the matched value, else `-1`.\r\n */\r\n function assocIndexOf(array, key) {\r\n var length = array.length;\r\n while (length--) {\r\n if (eq(array[length][0], key)) {\r\n return length;\r\n }\r\n }\r\n return -1;\r\n }\r\n\r\n /**\r\n * Aggregates elements of `collection` on `accumulator` with keys transformed\r\n * by `iteratee` and values set by `setter`.\r\n *\r\n * @private\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} setter The function to set `accumulator` values.\r\n * @param {Function} iteratee The iteratee to transform keys.\r\n * @param {Object} accumulator The initial aggregated object.\r\n * @returns {Function} Returns `accumulator`.\r\n */\r\n function baseAggregator(collection, setter, iteratee, accumulator) {\r\n baseEach(collection, function(value, key, collection) {\r\n setter(accumulator, value, iteratee(value), collection);\r\n });\r\n return accumulator;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.assign` without support for multiple sources\r\n * or `customizer` functions.\r\n *\r\n * @private\r\n * @param {Object} object The destination object.\r\n * @param {Object} source The source object.\r\n * @returns {Object} Returns `object`.\r\n */\r\n function baseAssign(object, source) {\r\n return object && copyObject(source, keys(source), object);\r\n }\r\n\r\n /**\r\n * The base implementation of `_.assignIn` without support for multiple sources\r\n * or `customizer` functions.\r\n *\r\n * @private\r\n * @param {Object} object The destination object.\r\n * @param {Object} source The source object.\r\n * @returns {Object} Returns `object`.\r\n */\r\n function baseAssignIn(object, source) {\r\n return object && copyObject(source, keysIn(source), object);\r\n }\r\n\r\n /**\r\n * The base implementation of `assignValue` and `assignMergeValue` without\r\n * value checks.\r\n *\r\n * @private\r\n * @param {Object} object The object to modify.\r\n * @param {string} key The key of the property to assign.\r\n * @param {*} value The value to assign.\r\n */\r\n function baseAssignValue(object, key, value) {\r\n if (key == '__proto__' && defineProperty) {\r\n defineProperty(object, key, {\r\n 'configurable': true,\r\n 'enumerable': true,\r\n 'value': value,\r\n 'writable': true\r\n });\r\n } else {\r\n object[key] = value;\r\n }\r\n }\r\n\r\n /**\r\n * The base implementation of `_.at` without support for individual paths.\r\n *\r\n * @private\r\n * @param {Object} object The object to iterate over.\r\n * @param {string[]} paths The property paths to pick.\r\n * @returns {Array} Returns the picked elements.\r\n */\r\n function baseAt(object, paths) {\r\n var index = -1,\r\n length = paths.length,\r\n result = Array(length),\r\n skip = object == null;\r\n\r\n while (++index < length) {\r\n result[index] = skip ? undefined : get(object, paths[index]);\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.clamp` which doesn't coerce arguments.\r\n *\r\n * @private\r\n * @param {number} number The number to clamp.\r\n * @param {number} [lower] The lower bound.\r\n * @param {number} upper The upper bound.\r\n * @returns {number} Returns the clamped number.\r\n */\r\n function baseClamp(number, lower, upper) {\r\n if (number === number) {\r\n if (upper !== undefined) {\r\n number = number <= upper ? number : upper;\r\n }\r\n if (lower !== undefined) {\r\n number = number >= lower ? number : lower;\r\n }\r\n }\r\n return number;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.clone` and `_.cloneDeep` which tracks\r\n * traversed objects.\r\n *\r\n * @private\r\n * @param {*} value The value to clone.\r\n * @param {boolean} bitmask The bitmask flags.\r\n * 1 - Deep clone\r\n * 2 - Flatten inherited properties\r\n * 4 - Clone symbols\r\n * @param {Function} [customizer] The function to customize cloning.\r\n * @param {string} [key] The key of `value`.\r\n * @param {Object} [object] The parent object of `value`.\r\n * @param {Object} [stack] Tracks traversed objects and their clone counterparts.\r\n * @returns {*} Returns the cloned value.\r\n */\r\n function baseClone(value, bitmask, customizer, key, object, stack) {\r\n var result,\r\n isDeep = bitmask & CLONE_DEEP_FLAG,\r\n isFlat = bitmask & CLONE_FLAT_FLAG,\r\n isFull = bitmask & CLONE_SYMBOLS_FLAG;\r\n\r\n if (customizer) {\r\n result = object ? customizer(value, key, object, stack) : customizer(value);\r\n }\r\n if (result !== undefined) {\r\n return result;\r\n }\r\n if (!isObject(value)) {\r\n return value;\r\n }\r\n var isArr = isArray(value);\r\n if (isArr) {\r\n result = initCloneArray(value);\r\n if (!isDeep) {\r\n return copyArray(value, result);\r\n }\r\n } else {\r\n var tag = getTag(value),\r\n isFunc = tag == funcTag || tag == genTag;\r\n\r\n if (isBuffer(value)) {\r\n return cloneBuffer(value, isDeep);\r\n }\r\n if (tag == objectTag || tag == argsTag || (isFunc && !object)) {\r\n result = (isFlat || isFunc) ? {} : initCloneObject(value);\r\n if (!isDeep) {\r\n return isFlat\r\n ? copySymbolsIn(value, baseAssignIn(result, value))\r\n : copySymbols(value, baseAssign(result, value));\r\n }\r\n } else {\r\n if (!cloneableTags[tag]) {\r\n return object ? value : {};\r\n }\r\n result = initCloneByTag(value, tag, isDeep);\r\n }\r\n }\r\n // Check for circular references and return its corresponding clone.\r\n stack || (stack = new Stack);\r\n var stacked = stack.get(value);\r\n if (stacked) {\r\n return stacked;\r\n }\r\n stack.set(value, result);\r\n\r\n if (isSet(value)) {\r\n value.forEach(function(subValue) {\r\n result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));\r\n });\r\n } else if (isMap(value)) {\r\n value.forEach(function(subValue, key) {\r\n result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));\r\n });\r\n }\r\n\r\n var keysFunc = isFull\r\n ? (isFlat ? getAllKeysIn : getAllKeys)\r\n : (isFlat ? keysIn : keys);\r\n\r\n var props = isArr ? undefined : keysFunc(value);\r\n arrayEach(props || value, function(subValue, key) {\r\n if (props) {\r\n key = subValue;\r\n subValue = value[key];\r\n }\r\n // Recursively populate clone (susceptible to call stack limits).\r\n assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));\r\n });\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.conforms` which doesn't clone `source`.\r\n *\r\n * @private\r\n * @param {Object} source The object of property predicates to conform to.\r\n * @returns {Function} Returns the new spec function.\r\n */\r\n function baseConforms(source) {\r\n var props = keys(source);\r\n return function(object) {\r\n return baseConformsTo(object, source, props);\r\n };\r\n }\r\n\r\n /**\r\n * The base implementation of `_.conformsTo` which accepts `props` to check.\r\n *\r\n * @private\r\n * @param {Object} object The object to inspect.\r\n * @param {Object} source The object of property predicates to conform to.\r\n * @returns {boolean} Returns `true` if `object` conforms, else `false`.\r\n */\r\n function baseConformsTo(object, source, props) {\r\n var length = props.length;\r\n if (object == null) {\r\n return !length;\r\n }\r\n object = Object(object);\r\n while (length--) {\r\n var key = props[length],\r\n predicate = source[key],\r\n value = object[key];\r\n\r\n if ((value === undefined && !(key in object)) || !predicate(value)) {\r\n return false;\r\n }\r\n }\r\n return true;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.delay` and `_.defer` which accepts `args`\r\n * to provide to `func`.\r\n *\r\n * @private\r\n * @param {Function} func The function to delay.\r\n * @param {number} wait The number of milliseconds to delay invocation.\r\n * @param {Array} args The arguments to provide to `func`.\r\n * @returns {number|Object} Returns the timer id or timeout object.\r\n */\r\n function baseDelay(func, wait, args) {\r\n if (typeof func != 'function') {\r\n throw new TypeError(FUNC_ERROR_TEXT);\r\n }\r\n return setTimeout(function() { func.apply(undefined, args); }, wait);\r\n }\r\n\r\n /**\r\n * The base implementation of methods like `_.difference` without support\r\n * for excluding multiple arrays or iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array} array The array to inspect.\r\n * @param {Array} values The values to exclude.\r\n * @param {Function} [iteratee] The iteratee invoked per element.\r\n * @param {Function} [comparator] The comparator invoked per element.\r\n * @returns {Array} Returns the new array of filtered values.\r\n */\r\n function baseDifference(array, values, iteratee, comparator) {\r\n var index = -1,\r\n includes = arrayIncludes,\r\n isCommon = true,\r\n length = array.length,\r\n result = [],\r\n valuesLength = values.length;\r\n\r\n if (!length) {\r\n return result;\r\n }\r\n if (iteratee) {\r\n values = arrayMap(values, baseUnary(iteratee));\r\n }\r\n if (comparator) {\r\n includes = arrayIncludesWith;\r\n isCommon = false;\r\n }\r\n else if (values.length >= LARGE_ARRAY_SIZE) {\r\n includes = cacheHas;\r\n isCommon = false;\r\n values = new SetCache(values);\r\n }\r\n outer:\r\n while (++index < length) {\r\n var value = array[index],\r\n computed = iteratee == null ? value : iteratee(value);\r\n\r\n value = (comparator || value !== 0) ? value : 0;\r\n if (isCommon && computed === computed) {\r\n var valuesIndex = valuesLength;\r\n while (valuesIndex--) {\r\n if (values[valuesIndex] === computed) {\r\n continue outer;\r\n }\r\n }\r\n result.push(value);\r\n }\r\n else if (!includes(values, computed, comparator)) {\r\n result.push(value);\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.forEach` without support for iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} iteratee The function invoked per iteration.\r\n * @returns {Array|Object} Returns `collection`.\r\n */\r\n var baseEach = createBaseEach(baseForOwn);\r\n\r\n /**\r\n * The base implementation of `_.forEachRight` without support for iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} iteratee The function invoked per iteration.\r\n * @returns {Array|Object} Returns `collection`.\r\n */\r\n var baseEachRight = createBaseEach(baseForOwnRight, true);\r\n\r\n /**\r\n * The base implementation of `_.every` without support for iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} predicate The function invoked per iteration.\r\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\r\n * else `false`\r\n */\r\n function baseEvery(collection, predicate) {\r\n var result = true;\r\n baseEach(collection, function(value, index, collection) {\r\n result = !!predicate(value, index, collection);\r\n return result;\r\n });\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of methods like `_.max` and `_.min` which accepts a\r\n * `comparator` to determine the extremum value.\r\n *\r\n * @private\r\n * @param {Array} array The array to iterate over.\r\n * @param {Function} iteratee The iteratee invoked per iteration.\r\n * @param {Function} comparator The comparator used to compare values.\r\n * @returns {*} Returns the extremum value.\r\n */\r\n function baseExtremum(array, iteratee, comparator) {\r\n var index = -1,\r\n length = array.length;\r\n\r\n while (++index < length) {\r\n var value = array[index],\r\n current = iteratee(value);\r\n\r\n if (current != null && (computed === undefined\r\n ? (current === current && !isSymbol(current))\r\n : comparator(current, computed)\r\n )) {\r\n var computed = current,\r\n result = value;\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.fill` without an iteratee call guard.\r\n *\r\n * @private\r\n * @param {Array} array The array to fill.\r\n * @param {*} value The value to fill `array` with.\r\n * @param {number} [start=0] The start position.\r\n * @param {number} [end=array.length] The end position.\r\n * @returns {Array} Returns `array`.\r\n */\r\n function baseFill(array, value, start, end) {\r\n var length = array.length;\r\n\r\n start = toInteger(start);\r\n if (start < 0) {\r\n start = -start > length ? 0 : (length + start);\r\n }\r\n end = (end === undefined || end > length) ? length : toInteger(end);\r\n if (end < 0) {\r\n end += length;\r\n }\r\n end = start > end ? 0 : toLength(end);\r\n while (start < end) {\r\n array[start++] = value;\r\n }\r\n return array;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.filter` without support for iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} predicate The function invoked per iteration.\r\n * @returns {Array} Returns the new filtered array.\r\n */\r\n function baseFilter(collection, predicate) {\r\n var result = [];\r\n baseEach(collection, function(value, index, collection) {\r\n if (predicate(value, index, collection)) {\r\n result.push(value);\r\n }\r\n });\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.flatten` with support for restricting flattening.\r\n *\r\n * @private\r\n * @param {Array} array The array to flatten.\r\n * @param {number} depth The maximum recursion depth.\r\n * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.\r\n * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.\r\n * @param {Array} [result=[]] The initial result value.\r\n * @returns {Array} Returns the new flattened array.\r\n */\r\n function baseFlatten(array, depth, predicate, isStrict, result) {\r\n var index = -1,\r\n length = array.length;\r\n\r\n predicate || (predicate = isFlattenable);\r\n result || (result = []);\r\n\r\n while (++index < length) {\r\n var value = array[index];\r\n if (depth > 0 && predicate(value)) {\r\n if (depth > 1) {\r\n // Recursively flatten arrays (susceptible to call stack limits).\r\n baseFlatten(value, depth - 1, predicate, isStrict, result);\r\n } else {\r\n arrayPush(result, value);\r\n }\r\n } else if (!isStrict) {\r\n result[result.length] = value;\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `baseForOwn` which iterates over `object`\r\n * properties returned by `keysFunc` and invokes `iteratee` for each property.\r\n * Iteratee functions may exit iteration early by explicitly returning `false`.\r\n *\r\n * @private\r\n * @param {Object} object The object to iterate over.\r\n * @param {Function} iteratee The function invoked per iteration.\r\n * @param {Function} keysFunc The function to get the keys of `object`.\r\n * @returns {Object} Returns `object`.\r\n */\r\n var baseFor = createBaseFor();\r\n\r\n /**\r\n * This function is like `baseFor` except that it iterates over properties\r\n * in the opposite order.\r\n *\r\n * @private\r\n * @param {Object} object The object to iterate over.\r\n * @param {Function} iteratee The function invoked per iteration.\r\n * @param {Function} keysFunc The function to get the keys of `object`.\r\n * @returns {Object} Returns `object`.\r\n */\r\n var baseForRight = createBaseFor(true);\r\n\r\n /**\r\n * The base implementation of `_.forOwn` without support for iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Object} object The object to iterate over.\r\n * @param {Function} iteratee The function invoked per iteration.\r\n * @returns {Object} Returns `object`.\r\n */\r\n function baseForOwn(object, iteratee) {\r\n return object && baseFor(object, iteratee, keys);\r\n }\r\n\r\n /**\r\n * The base implementation of `_.forOwnRight` without support for iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Object} object The object to iterate over.\r\n * @param {Function} iteratee The function invoked per iteration.\r\n * @returns {Object} Returns `object`.\r\n */\r\n function baseForOwnRight(object, iteratee) {\r\n return object && baseForRight(object, iteratee, keys);\r\n }\r\n\r\n /**\r\n * The base implementation of `_.functions` which creates an array of\r\n * `object` function property names filtered from `props`.\r\n *\r\n * @private\r\n * @param {Object} object The object to inspect.\r\n * @param {Array} props The property names to filter.\r\n * @returns {Array} Returns the function names.\r\n */\r\n function baseFunctions(object, props) {\r\n return arrayFilter(props, function(key) {\r\n return isFunction(object[key]);\r\n });\r\n }\r\n\r\n /**\r\n * The base implementation of `_.get` without support for default values.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @param {Array|string} path The path of the property to get.\r\n * @returns {*} Returns the resolved value.\r\n */\r\n function baseGet(object, path) {\r\n path = castPath(path, object);\r\n\r\n var index = 0,\r\n length = path.length;\r\n\r\n while (object != null && index < length) {\r\n object = object[toKey(path[index++])];\r\n }\r\n return (index && index == length) ? object : undefined;\r\n }\r\n\r\n /**\r\n * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\r\n * `keysFunc` and `symbolsFunc` to get the enumerable property names and\r\n * symbols of `object`.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @param {Function} keysFunc The function to get the keys of `object`.\r\n * @param {Function} symbolsFunc The function to get the symbols of `object`.\r\n * @returns {Array} Returns the array of property names and symbols.\r\n */\r\n function baseGetAllKeys(object, keysFunc, symbolsFunc) {\r\n var result = keysFunc(object);\r\n return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\r\n }\r\n\r\n /**\r\n * The base implementation of `getTag` without fallbacks for buggy environments.\r\n *\r\n * @private\r\n * @param {*} value The value to query.\r\n * @returns {string} Returns the `toStringTag`.\r\n */\r\n function baseGetTag(value) {\r\n if (value == null) {\r\n return value === undefined ? undefinedTag : nullTag;\r\n }\r\n return (symToStringTag && symToStringTag in Object(value))\r\n ? getRawTag(value)\r\n : objectToString(value);\r\n }\r\n\r\n /**\r\n * The base implementation of `_.gt` which doesn't coerce arguments.\r\n *\r\n * @private\r\n * @param {*} value The value to compare.\r\n * @param {*} other The other value to compare.\r\n * @returns {boolean} Returns `true` if `value` is greater than `other`,\r\n * else `false`.\r\n */\r\n function baseGt(value, other) {\r\n return value > other;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.has` without support for deep paths.\r\n *\r\n * @private\r\n * @param {Object} [object] The object to query.\r\n * @param {Array|string} key The key to check.\r\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\r\n */\r\n function baseHas(object, key) {\r\n return object != null && hasOwnProperty.call(object, key);\r\n }\r\n\r\n /**\r\n * The base implementation of `_.hasIn` without support for deep paths.\r\n *\r\n * @private\r\n * @param {Object} [object] The object to query.\r\n * @param {Array|string} key The key to check.\r\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\r\n */\r\n function baseHasIn(object, key) {\r\n return object != null && key in Object(object);\r\n }\r\n\r\n /**\r\n * The base implementation of `_.inRange` which doesn't coerce arguments.\r\n *\r\n * @private\r\n * @param {number} number The number to check.\r\n * @param {number} start The start of the range.\r\n * @param {number} end The end of the range.\r\n * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\r\n */\r\n function baseInRange(number, start, end) {\r\n return number >= nativeMin(start, end) && number < nativeMax(start, end);\r\n }\r\n\r\n /**\r\n * The base implementation of methods like `_.intersection`, without support\r\n * for iteratee shorthands, that accepts an array of arrays to inspect.\r\n *\r\n * @private\r\n * @param {Array} arrays The arrays to inspect.\r\n * @param {Function} [iteratee] The iteratee invoked per element.\r\n * @param {Function} [comparator] The comparator invoked per element.\r\n * @returns {Array} Returns the new array of shared values.\r\n */\r\n function baseIntersection(arrays, iteratee, comparator) {\r\n var includes = comparator ? arrayIncludesWith : arrayIncludes,\r\n length = arrays[0].length,\r\n othLength = arrays.length,\r\n othIndex = othLength,\r\n caches = Array(othLength),\r\n maxLength = Infinity,\r\n result = [];\r\n\r\n while (othIndex--) {\r\n var array = arrays[othIndex];\r\n if (othIndex && iteratee) {\r\n array = arrayMap(array, baseUnary(iteratee));\r\n }\r\n maxLength = nativeMin(array.length, maxLength);\r\n caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))\r\n ? new SetCache(othIndex && array)\r\n : undefined;\r\n }\r\n array = arrays[0];\r\n\r\n var index = -1,\r\n seen = caches[0];\r\n\r\n outer:\r\n while (++index < length && result.length < maxLength) {\r\n var value = array[index],\r\n computed = iteratee ? iteratee(value) : value;\r\n\r\n value = (comparator || value !== 0) ? value : 0;\r\n if (!(seen\r\n ? cacheHas(seen, computed)\r\n : includes(result, computed, comparator)\r\n )) {\r\n othIndex = othLength;\r\n while (--othIndex) {\r\n var cache = caches[othIndex];\r\n if (!(cache\r\n ? cacheHas(cache, computed)\r\n : includes(arrays[othIndex], computed, comparator))\r\n ) {\r\n continue outer;\r\n }\r\n }\r\n if (seen) {\r\n seen.push(computed);\r\n }\r\n result.push(value);\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.invert` and `_.invertBy` which inverts\r\n * `object` with values transformed by `iteratee` and set by `setter`.\r\n *\r\n * @private\r\n * @param {Object} object The object to iterate over.\r\n * @param {Function} setter The function to set `accumulator` values.\r\n * @param {Function} iteratee The iteratee to transform values.\r\n * @param {Object} accumulator The initial inverted object.\r\n * @returns {Function} Returns `accumulator`.\r\n */\r\n function baseInverter(object, setter, iteratee, accumulator) {\r\n baseForOwn(object, function(value, key, object) {\r\n setter(accumulator, iteratee(value), key, object);\r\n });\r\n return accumulator;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.invoke` without support for individual\r\n * method arguments.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @param {Array|string} path The path of the method to invoke.\r\n * @param {Array} args The arguments to invoke the method with.\r\n * @returns {*} Returns the result of the invoked method.\r\n */\r\n function baseInvoke(object, path, args) {\r\n path = castPath(path, object);\r\n object = parent(object, path);\r\n var func = object == null ? object : object[toKey(last(path))];\r\n return func == null ? undefined : apply(func, object, args);\r\n }\r\n\r\n /**\r\n * The base implementation of `_.isArguments`.\r\n *\r\n * @private\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\r\n */\r\n function baseIsArguments(value) {\r\n return isObjectLike(value) && baseGetTag(value) == argsTag;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.isArrayBuffer` without Node.js optimizations.\r\n *\r\n * @private\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\r\n */\r\n function baseIsArrayBuffer(value) {\r\n return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.isDate` without Node.js optimizations.\r\n *\r\n * @private\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\r\n */\r\n function baseIsDate(value) {\r\n return isObjectLike(value) && baseGetTag(value) == dateTag;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.isEqual` which supports partial comparisons\r\n * and tracks traversed objects.\r\n *\r\n * @private\r\n * @param {*} value The value to compare.\r\n * @param {*} other The other value to compare.\r\n * @param {boolean} bitmask The bitmask flags.\r\n * 1 - Unordered comparison\r\n * 2 - Partial comparison\r\n * @param {Function} [customizer] The function to customize comparisons.\r\n * @param {Object} [stack] Tracks traversed `value` and `other` objects.\r\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\r\n */\r\n function baseIsEqual(value, other, bitmask, customizer, stack) {\r\n if (value === other) {\r\n return true;\r\n }\r\n if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {\r\n return value !== value && other !== other;\r\n }\r\n return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);\r\n }\r\n\r\n /**\r\n * A specialized version of `baseIsEqual` for arrays and objects which performs\r\n * deep comparisons and tracks traversed objects enabling objects with circular\r\n * references to be compared.\r\n *\r\n * @private\r\n * @param {Object} object The object to compare.\r\n * @param {Object} other The other object to compare.\r\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\r\n * @param {Function} customizer The function to customize comparisons.\r\n * @param {Function} equalFunc The function to determine equivalents of values.\r\n * @param {Object} [stack] Tracks traversed `object` and `other` objects.\r\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\r\n */\r\n function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {\r\n var objIsArr = isArray(object),\r\n othIsArr = isArray(other),\r\n objTag = objIsArr ? arrayTag : getTag(object),\r\n othTag = othIsArr ? arrayTag : getTag(other);\r\n\r\n objTag = objTag == argsTag ? objectTag : objTag;\r\n othTag = othTag == argsTag ? objectTag : othTag;\r\n\r\n var objIsObj = objTag == objectTag,\r\n othIsObj = othTag == objectTag,\r\n isSameTag = objTag == othTag;\r\n\r\n if (isSameTag && isBuffer(object)) {\r\n if (!isBuffer(other)) {\r\n return false;\r\n }\r\n objIsArr = true;\r\n objIsObj = false;\r\n }\r\n if (isSameTag && !objIsObj) {\r\n stack || (stack = new Stack);\r\n return (objIsArr || isTypedArray(object))\r\n ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)\r\n : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);\r\n }\r\n if (!(bitmask & COMPARE_PARTIAL_FLAG)) {\r\n var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\r\n othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\r\n\r\n if (objIsWrapped || othIsWrapped) {\r\n var objUnwrapped = objIsWrapped ? object.value() : object,\r\n othUnwrapped = othIsWrapped ? other.value() : other;\r\n\r\n stack || (stack = new Stack);\r\n return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);\r\n }\r\n }\r\n if (!isSameTag) {\r\n return false;\r\n }\r\n stack || (stack = new Stack);\r\n return equalObjects(object, other, bitmask, customizer, equalFunc, stack);\r\n }\r\n\r\n /**\r\n * The base implementation of `_.isMap` without Node.js optimizations.\r\n *\r\n * @private\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a map, else `false`.\r\n */\r\n function baseIsMap(value) {\r\n return isObjectLike(value) && getTag(value) == mapTag;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.isMatch` without support for iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Object} object The object to inspect.\r\n * @param {Object} source The object of property values to match.\r\n * @param {Array} matchData The property names, values, and compare flags to match.\r\n * @param {Function} [customizer] The function to customize comparisons.\r\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\r\n */\r\n function baseIsMatch(object, source, matchData, customizer) {\r\n var index = matchData.length,\r\n length = index,\r\n noCustomizer = !customizer;\r\n\r\n if (object == null) {\r\n return !length;\r\n }\r\n object = Object(object);\r\n while (index--) {\r\n var data = matchData[index];\r\n if ((noCustomizer && data[2])\r\n ? data[1] !== object[data[0]]\r\n : !(data[0] in object)\r\n ) {\r\n return false;\r\n }\r\n }\r\n while (++index < length) {\r\n data = matchData[index];\r\n var key = data[0],\r\n objValue = object[key],\r\n srcValue = data[1];\r\n\r\n if (noCustomizer && data[2]) {\r\n if (objValue === undefined && !(key in object)) {\r\n return false;\r\n }\r\n } else {\r\n var stack = new Stack;\r\n if (customizer) {\r\n var result = customizer(objValue, srcValue, key, object, source, stack);\r\n }\r\n if (!(result === undefined\r\n ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)\r\n : result\r\n )) {\r\n return false;\r\n }\r\n }\r\n }\r\n return true;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.isNative` without bad shim checks.\r\n *\r\n * @private\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a native function,\r\n * else `false`.\r\n */\r\n function baseIsNative(value) {\r\n if (!isObject(value) || isMasked(value)) {\r\n return false;\r\n }\r\n var pattern = isFunction(value) ? reIsNative : reIsHostCtor;\r\n return pattern.test(toSource(value));\r\n }\r\n\r\n /**\r\n * The base implementation of `_.isRegExp` without Node.js optimizations.\r\n *\r\n * @private\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\r\n */\r\n function baseIsRegExp(value) {\r\n return isObjectLike(value) && baseGetTag(value) == regexpTag;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.isSet` without Node.js optimizations.\r\n *\r\n * @private\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a set, else `false`.\r\n */\r\n function baseIsSet(value) {\r\n return isObjectLike(value) && getTag(value) == setTag;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.isTypedArray` without Node.js optimizations.\r\n *\r\n * @private\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\r\n */\r\n function baseIsTypedArray(value) {\r\n return isObjectLike(value) &&\r\n isLength(value.length) && !!typedArrayTags[baseGetTag(value)];\r\n }\r\n\r\n /**\r\n * The base implementation of `_.iteratee`.\r\n *\r\n * @private\r\n * @param {*} [value=_.identity] The value to convert to an iteratee.\r\n * @returns {Function} Returns the iteratee.\r\n */\r\n function baseIteratee(value) {\r\n // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.\r\n // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.\r\n if (typeof value == 'function') {\r\n return value;\r\n }\r\n if (value == null) {\r\n return identity;\r\n }\r\n if (typeof value == 'object') {\r\n return isArray(value)\r\n ? baseMatchesProperty(value[0], value[1])\r\n : baseMatches(value);\r\n }\r\n return property(value);\r\n }\r\n\r\n /**\r\n * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @returns {Array} Returns the array of property names.\r\n */\r\n function baseKeys(object) {\r\n if (!isPrototype(object)) {\r\n return nativeKeys(object);\r\n }\r\n var result = [];\r\n for (var key in Object(object)) {\r\n if (hasOwnProperty.call(object, key) && key != 'constructor') {\r\n result.push(key);\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @returns {Array} Returns the array of property names.\r\n */\r\n function baseKeysIn(object) {\r\n if (!isObject(object)) {\r\n return nativeKeysIn(object);\r\n }\r\n var isProto = isPrototype(object),\r\n result = [];\r\n\r\n for (var key in object) {\r\n if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {\r\n result.push(key);\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.lt` which doesn't coerce arguments.\r\n *\r\n * @private\r\n * @param {*} value The value to compare.\r\n * @param {*} other The other value to compare.\r\n * @returns {boolean} Returns `true` if `value` is less than `other`,\r\n * else `false`.\r\n */\r\n function baseLt(value, other) {\r\n return value < other;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.map` without support for iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} iteratee The function invoked per iteration.\r\n * @returns {Array} Returns the new mapped array.\r\n */\r\n function baseMap(collection, iteratee) {\r\n var index = -1,\r\n result = isArrayLike(collection) ? Array(collection.length) : [];\r\n\r\n baseEach(collection, function(value, key, collection) {\r\n result[++index] = iteratee(value, key, collection);\r\n });\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.matches` which doesn't clone `source`.\r\n *\r\n * @private\r\n * @param {Object} source The object of property values to match.\r\n * @returns {Function} Returns the new spec function.\r\n */\r\n function baseMatches(source) {\r\n var matchData = getMatchData(source);\r\n if (matchData.length == 1 && matchData[0][2]) {\r\n return matchesStrictComparable(matchData[0][0], matchData[0][1]);\r\n }\r\n return function(object) {\r\n return object === source || baseIsMatch(object, source, matchData);\r\n };\r\n }\r\n\r\n /**\r\n * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.\r\n *\r\n * @private\r\n * @param {string} path The path of the property to get.\r\n * @param {*} srcValue The value to match.\r\n * @returns {Function} Returns the new spec function.\r\n */\r\n function baseMatchesProperty(path, srcValue) {\r\n if (isKey(path) && isStrictComparable(srcValue)) {\r\n return matchesStrictComparable(toKey(path), srcValue);\r\n }\r\n return function(object) {\r\n var objValue = get(object, path);\r\n return (objValue === undefined && objValue === srcValue)\r\n ? hasIn(object, path)\r\n : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);\r\n };\r\n }\r\n\r\n /**\r\n * The base implementation of `_.merge` without support for multiple sources.\r\n *\r\n * @private\r\n * @param {Object} object The destination object.\r\n * @param {Object} source The source object.\r\n * @param {number} srcIndex The index of `source`.\r\n * @param {Function} [customizer] The function to customize merged values.\r\n * @param {Object} [stack] Tracks traversed source values and their merged\r\n * counterparts.\r\n */\r\n function baseMerge(object, source, srcIndex, customizer, stack) {\r\n if (object === source) {\r\n return;\r\n }\r\n baseFor(source, function(srcValue, key) {\r\n stack || (stack = new Stack);\r\n if (isObject(srcValue)) {\r\n baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);\r\n }\r\n else {\r\n var newValue = customizer\r\n ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)\r\n : undefined;\r\n\r\n if (newValue === undefined) {\r\n newValue = srcValue;\r\n }\r\n assignMergeValue(object, key, newValue);\r\n }\r\n }, keysIn);\r\n }\r\n\r\n /**\r\n * A specialized version of `baseMerge` for arrays and objects which performs\r\n * deep merges and tracks traversed objects enabling objects with circular\r\n * references to be merged.\r\n *\r\n * @private\r\n * @param {Object} object The destination object.\r\n * @param {Object} source The source object.\r\n * @param {string} key The key of the value to merge.\r\n * @param {number} srcIndex The index of `source`.\r\n * @param {Function} mergeFunc The function to merge values.\r\n * @param {Function} [customizer] The function to customize assigned values.\r\n * @param {Object} [stack] Tracks traversed source values and their merged\r\n * counterparts.\r\n */\r\n function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {\r\n var objValue = safeGet(object, key),\r\n srcValue = safeGet(source, key),\r\n stacked = stack.get(srcValue);\r\n\r\n if (stacked) {\r\n assignMergeValue(object, key, stacked);\r\n return;\r\n }\r\n var newValue = customizer\r\n ? customizer(objValue, srcValue, (key + ''), object, source, stack)\r\n : undefined;\r\n\r\n var isCommon = newValue === undefined;\r\n\r\n if (isCommon) {\r\n var isArr = isArray(srcValue),\r\n isBuff = !isArr && isBuffer(srcValue),\r\n isTyped = !isArr && !isBuff && isTypedArray(srcValue);\r\n\r\n newValue = srcValue;\r\n if (isArr || isBuff || isTyped) {\r\n if (isArray(objValue)) {\r\n newValue = objValue;\r\n }\r\n else if (isArrayLikeObject(objValue)) {\r\n newValue = copyArray(objValue);\r\n }\r\n else if (isBuff) {\r\n isCommon = false;\r\n newValue = cloneBuffer(srcValue, true);\r\n }\r\n else if (isTyped) {\r\n isCommon = false;\r\n newValue = cloneTypedArray(srcValue, true);\r\n }\r\n else {\r\n newValue = [];\r\n }\r\n }\r\n else if (isPlainObject(srcValue) || isArguments(srcValue)) {\r\n newValue = objValue;\r\n if (isArguments(objValue)) {\r\n newValue = toPlainObject(objValue);\r\n }\r\n else if (!isObject(objValue) || isFunction(objValue)) {\r\n newValue = initCloneObject(srcValue);\r\n }\r\n }\r\n else {\r\n isCommon = false;\r\n }\r\n }\r\n if (isCommon) {\r\n // Recursively merge objects and arrays (susceptible to call stack limits).\r\n stack.set(srcValue, newValue);\r\n mergeFunc(newValue, srcValue, srcIndex, customizer, stack);\r\n stack['delete'](srcValue);\r\n }\r\n assignMergeValue(object, key, newValue);\r\n }\r\n\r\n /**\r\n * The base implementation of `_.nth` which doesn't coerce arguments.\r\n *\r\n * @private\r\n * @param {Array} array The array to query.\r\n * @param {number} n The index of the element to return.\r\n * @returns {*} Returns the nth element of `array`.\r\n */\r\n function baseNth(array, n) {\r\n var length = array.length;\r\n if (!length) {\r\n return;\r\n }\r\n n += n < 0 ? length : 0;\r\n return isIndex(n, length) ? array[n] : undefined;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.orderBy` without param guards.\r\n *\r\n * @private\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.\r\n * @param {string[]} orders The sort orders of `iteratees`.\r\n * @returns {Array} Returns the new sorted array.\r\n */\r\n function baseOrderBy(collection, iteratees, orders) {\r\n if (iteratees.length) {\r\n iteratees = arrayMap(iteratees, function(iteratee) {\r\n if (isArray(iteratee)) {\r\n return function(value) {\r\n return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee);\r\n }\r\n }\r\n return iteratee;\r\n });\r\n } else {\r\n iteratees = [identity];\r\n }\r\n\r\n var index = -1;\r\n iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\r\n\r\n var result = baseMap(collection, function(value, key, collection) {\r\n var criteria = arrayMap(iteratees, function(iteratee) {\r\n return iteratee(value);\r\n });\r\n return { 'criteria': criteria, 'index': ++index, 'value': value };\r\n });\r\n\r\n return baseSortBy(result, function(object, other) {\r\n return compareMultiple(object, other, orders);\r\n });\r\n }\r\n\r\n /**\r\n * The base implementation of `_.pick` without support for individual\r\n * property identifiers.\r\n *\r\n * @private\r\n * @param {Object} object The source object.\r\n * @param {string[]} paths The property paths to pick.\r\n * @returns {Object} Returns the new object.\r\n */\r\n function basePick(object, paths) {\r\n return basePickBy(object, paths, function(value, path) {\r\n return hasIn(object, path);\r\n });\r\n }\r\n\r\n /**\r\n * The base implementation of `_.pickBy` without support for iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Object} object The source object.\r\n * @param {string[]} paths The property paths to pick.\r\n * @param {Function} predicate The function invoked per property.\r\n * @returns {Object} Returns the new object.\r\n */\r\n function basePickBy(object, paths, predicate) {\r\n var index = -1,\r\n length = paths.length,\r\n result = {};\r\n\r\n while (++index < length) {\r\n var path = paths[index],\r\n value = baseGet(object, path);\r\n\r\n if (predicate(value, path)) {\r\n baseSet(result, castPath(path, object), value);\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * A specialized version of `baseProperty` which supports deep paths.\r\n *\r\n * @private\r\n * @param {Array|string} path The path of the property to get.\r\n * @returns {Function} Returns the new accessor function.\r\n */\r\n function basePropertyDeep(path) {\r\n return function(object) {\r\n return baseGet(object, path);\r\n };\r\n }\r\n\r\n /**\r\n * The base implementation of `_.pullAllBy` without support for iteratee\r\n * shorthands.\r\n *\r\n * @private\r\n * @param {Array} array The array to modify.\r\n * @param {Array} values The values to remove.\r\n * @param {Function} [iteratee] The iteratee invoked per element.\r\n * @param {Function} [comparator] The comparator invoked per element.\r\n * @returns {Array} Returns `array`.\r\n */\r\n function basePullAll(array, values, iteratee, comparator) {\r\n var indexOf = comparator ? baseIndexOfWith : baseIndexOf,\r\n index = -1,\r\n length = values.length,\r\n seen = array;\r\n\r\n if (array === values) {\r\n values = copyArray(values);\r\n }\r\n if (iteratee) {\r\n seen = arrayMap(array, baseUnary(iteratee));\r\n }\r\n while (++index < length) {\r\n var fromIndex = 0,\r\n value = values[index],\r\n computed = iteratee ? iteratee(value) : value;\r\n\r\n while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {\r\n if (seen !== array) {\r\n splice.call(seen, fromIndex, 1);\r\n }\r\n splice.call(array, fromIndex, 1);\r\n }\r\n }\r\n return array;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.pullAt` without support for individual\r\n * indexes or capturing the removed elements.\r\n *\r\n * @private\r\n * @param {Array} array The array to modify.\r\n * @param {number[]} indexes The indexes of elements to remove.\r\n * @returns {Array} Returns `array`.\r\n */\r\n function basePullAt(array, indexes) {\r\n var length = array ? indexes.length : 0,\r\n lastIndex = length - 1;\r\n\r\n while (length--) {\r\n var index = indexes[length];\r\n if (length == lastIndex || index !== previous) {\r\n var previous = index;\r\n if (isIndex(index)) {\r\n splice.call(array, index, 1);\r\n } else {\r\n baseUnset(array, index);\r\n }\r\n }\r\n }\r\n return array;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.random` without support for returning\r\n * floating-point numbers.\r\n *\r\n * @private\r\n * @param {number} lower The lower bound.\r\n * @param {number} upper The upper bound.\r\n * @returns {number} Returns the random number.\r\n */\r\n function baseRandom(lower, upper) {\r\n return lower + nativeFloor(nativeRandom() * (upper - lower + 1));\r\n }\r\n\r\n /**\r\n * The base implementation of `_.range` and `_.rangeRight` which doesn't\r\n * coerce arguments.\r\n *\r\n * @private\r\n * @param {number} start The start of the range.\r\n * @param {number} end The end of the range.\r\n * @param {number} step The value to increment or decrement by.\r\n * @param {boolean} [fromRight] Specify iterating from right to left.\r\n * @returns {Array} Returns the range of numbers.\r\n */\r\n function baseRange(start, end, step, fromRight) {\r\n var index = -1,\r\n length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),\r\n result = Array(length);\r\n\r\n while (length--) {\r\n result[fromRight ? length : ++index] = start;\r\n start += step;\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.repeat` which doesn't coerce arguments.\r\n *\r\n * @private\r\n * @param {string} string The string to repeat.\r\n * @param {number} n The number of times to repeat the string.\r\n * @returns {string} Returns the repeated string.\r\n */\r\n function baseRepeat(string, n) {\r\n var result = '';\r\n if (!string || n < 1 || n > MAX_SAFE_INTEGER) {\r\n return result;\r\n }\r\n // Leverage the exponentiation by squaring algorithm for a faster repeat.\r\n // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.\r\n do {\r\n if (n % 2) {\r\n result += string;\r\n }\r\n n = nativeFloor(n / 2);\r\n if (n) {\r\n string += string;\r\n }\r\n } while (n);\r\n\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.rest` which doesn't validate or coerce arguments.\r\n *\r\n * @private\r\n * @param {Function} func The function to apply a rest parameter to.\r\n * @param {number} [start=func.length-1] The start position of the rest parameter.\r\n * @returns {Function} Returns the new function.\r\n */\r\n function baseRest(func, start) {\r\n return setToString(overRest(func, start, identity), func + '');\r\n }\r\n\r\n /**\r\n * The base implementation of `_.sample`.\r\n *\r\n * @private\r\n * @param {Array|Object} collection The collection to sample.\r\n * @returns {*} Returns the random element.\r\n */\r\n function baseSample(collection) {\r\n return arraySample(values(collection));\r\n }\r\n\r\n /**\r\n * The base implementation of `_.sampleSize` without param guards.\r\n *\r\n * @private\r\n * @param {Array|Object} collection The collection to sample.\r\n * @param {number} n The number of elements to sample.\r\n * @returns {Array} Returns the random elements.\r\n */\r\n function baseSampleSize(collection, n) {\r\n var array = values(collection);\r\n return shuffleSelf(array, baseClamp(n, 0, array.length));\r\n }\r\n\r\n /**\r\n * The base implementation of `_.set`.\r\n *\r\n * @private\r\n * @param {Object} object The object to modify.\r\n * @param {Array|string} path The path of the property to set.\r\n * @param {*} value The value to set.\r\n * @param {Function} [customizer] The function to customize path creation.\r\n * @returns {Object} Returns `object`.\r\n */\r\n function baseSet(object, path, value, customizer) {\r\n if (!isObject(object)) {\r\n return object;\r\n }\r\n path = castPath(path, object);\r\n\r\n var index = -1,\r\n length = path.length,\r\n lastIndex = length - 1,\r\n nested = object;\r\n\r\n while (nested != null && ++index < length) {\r\n var key = toKey(path[index]),\r\n newValue = value;\r\n\r\n if (key === '__proto__' || key === 'constructor' || key === 'prototype') {\r\n return object;\r\n }\r\n\r\n if (index != lastIndex) {\r\n var objValue = nested[key];\r\n newValue = customizer ? customizer(objValue, key, nested) : undefined;\r\n if (newValue === undefined) {\r\n newValue = isObject(objValue)\r\n ? objValue\r\n : (isIndex(path[index + 1]) ? [] : {});\r\n }\r\n }\r\n assignValue(nested, key, newValue);\r\n nested = nested[key];\r\n }\r\n return object;\r\n }\r\n\r\n /**\r\n * The base implementation of `setData` without support for hot loop shorting.\r\n *\r\n * @private\r\n * @param {Function} func The function to associate metadata with.\r\n * @param {*} data The metadata.\r\n * @returns {Function} Returns `func`.\r\n */\r\n var baseSetData = !metaMap ? identity : function(func, data) {\r\n metaMap.set(func, data);\r\n return func;\r\n };\r\n\r\n /**\r\n * The base implementation of `setToString` without support for hot loop shorting.\r\n *\r\n * @private\r\n * @param {Function} func The function to modify.\r\n * @param {Function} string The `toString` result.\r\n * @returns {Function} Returns `func`.\r\n */\r\n var baseSetToString = !defineProperty ? identity : function(func, string) {\r\n return defineProperty(func, 'toString', {\r\n 'configurable': true,\r\n 'enumerable': false,\r\n 'value': constant(string),\r\n 'writable': true\r\n });\r\n };\r\n\r\n /**\r\n * The base implementation of `_.shuffle`.\r\n *\r\n * @private\r\n * @param {Array|Object} collection The collection to shuffle.\r\n * @returns {Array} Returns the new shuffled array.\r\n */\r\n function baseShuffle(collection) {\r\n return shuffleSelf(values(collection));\r\n }\r\n\r\n /**\r\n * The base implementation of `_.slice` without an iteratee call guard.\r\n *\r\n * @private\r\n * @param {Array} array The array to slice.\r\n * @param {number} [start=0] The start position.\r\n * @param {number} [end=array.length] The end position.\r\n * @returns {Array} Returns the slice of `array`.\r\n */\r\n function baseSlice(array, start, end) {\r\n var index = -1,\r\n length = array.length;\r\n\r\n if (start < 0) {\r\n start = -start > length ? 0 : (length + start);\r\n }\r\n end = end > length ? length : end;\r\n if (end < 0) {\r\n end += length;\r\n }\r\n length = start > end ? 0 : ((end - start) >>> 0);\r\n start >>>= 0;\r\n\r\n var result = Array(length);\r\n while (++index < length) {\r\n result[index] = array[index + start];\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.some` without support for iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} predicate The function invoked per iteration.\r\n * @returns {boolean} Returns `true` if any element passes the predicate check,\r\n * else `false`.\r\n */\r\n function baseSome(collection, predicate) {\r\n var result;\r\n\r\n baseEach(collection, function(value, index, collection) {\r\n result = predicate(value, index, collection);\r\n return !result;\r\n });\r\n return !!result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which\r\n * performs a binary search of `array` to determine the index at which `value`\r\n * should be inserted into `array` in order to maintain its sort order.\r\n *\r\n * @private\r\n * @param {Array} array The sorted array to inspect.\r\n * @param {*} value The value to evaluate.\r\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\r\n * @returns {number} Returns the index at which `value` should be inserted\r\n * into `array`.\r\n */\r\n function baseSortedIndex(array, value, retHighest) {\r\n var low = 0,\r\n high = array == null ? low : array.length;\r\n\r\n if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {\r\n while (low < high) {\r\n var mid = (low + high) >>> 1,\r\n computed = array[mid];\r\n\r\n if (computed !== null && !isSymbol(computed) &&\r\n (retHighest ? (computed <= value) : (computed < value))) {\r\n low = mid + 1;\r\n } else {\r\n high = mid;\r\n }\r\n }\r\n return high;\r\n }\r\n return baseSortedIndexBy(array, value, identity, retHighest);\r\n }\r\n\r\n /**\r\n * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`\r\n * which invokes `iteratee` for `value` and each element of `array` to compute\r\n * their sort ranking. The iteratee is invoked with one argument; (value).\r\n *\r\n * @private\r\n * @param {Array} array The sorted array to inspect.\r\n * @param {*} value The value to evaluate.\r\n * @param {Function} iteratee The iteratee invoked per element.\r\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\r\n * @returns {number} Returns the index at which `value` should be inserted\r\n * into `array`.\r\n */\r\n function baseSortedIndexBy(array, value, iteratee, retHighest) {\r\n var low = 0,\r\n high = array == null ? 0 : array.length;\r\n if (high === 0) {\r\n return 0;\r\n }\r\n\r\n value = iteratee(value);\r\n var valIsNaN = value !== value,\r\n valIsNull = value === null,\r\n valIsSymbol = isSymbol(value),\r\n valIsUndefined = value === undefined;\r\n\r\n while (low < high) {\r\n var mid = nativeFloor((low + high) / 2),\r\n computed = iteratee(array[mid]),\r\n othIsDefined = computed !== undefined,\r\n othIsNull = computed === null,\r\n othIsReflexive = computed === computed,\r\n othIsSymbol = isSymbol(computed);\r\n\r\n if (valIsNaN) {\r\n var setLow = retHighest || othIsReflexive;\r\n } else if (valIsUndefined) {\r\n setLow = othIsReflexive && (retHighest || othIsDefined);\r\n } else if (valIsNull) {\r\n setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);\r\n } else if (valIsSymbol) {\r\n setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);\r\n } else if (othIsNull || othIsSymbol) {\r\n setLow = false;\r\n } else {\r\n setLow = retHighest ? (computed <= value) : (computed < value);\r\n }\r\n if (setLow) {\r\n low = mid + 1;\r\n } else {\r\n high = mid;\r\n }\r\n }\r\n return nativeMin(high, MAX_ARRAY_INDEX);\r\n }\r\n\r\n /**\r\n * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without\r\n * support for iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array} array The array to inspect.\r\n * @param {Function} [iteratee] The iteratee invoked per element.\r\n * @returns {Array} Returns the new duplicate free array.\r\n */\r\n function baseSortedUniq(array, iteratee) {\r\n var index = -1,\r\n length = array.length,\r\n resIndex = 0,\r\n result = [];\r\n\r\n while (++index < length) {\r\n var value = array[index],\r\n computed = iteratee ? iteratee(value) : value;\r\n\r\n if (!index || !eq(computed, seen)) {\r\n var seen = computed;\r\n result[resIndex++] = value === 0 ? 0 : value;\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.toNumber` which doesn't ensure correct\r\n * conversions of binary, hexadecimal, or octal string values.\r\n *\r\n * @private\r\n * @param {*} value The value to process.\r\n * @returns {number} Returns the number.\r\n */\r\n function baseToNumber(value) {\r\n if (typeof value == 'number') {\r\n return value;\r\n }\r\n if (isSymbol(value)) {\r\n return NAN;\r\n }\r\n return +value;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.toString` which doesn't convert nullish\r\n * values to empty strings.\r\n *\r\n * @private\r\n * @param {*} value The value to process.\r\n * @returns {string} Returns the string.\r\n */\r\n function baseToString(value) {\r\n // Exit early for strings to avoid a performance hit in some environments.\r\n if (typeof value == 'string') {\r\n return value;\r\n }\r\n if (isArray(value)) {\r\n // Recursively convert values (susceptible to call stack limits).\r\n return arrayMap(value, baseToString) + '';\r\n }\r\n if (isSymbol(value)) {\r\n return symbolToString ? symbolToString.call(value) : '';\r\n }\r\n var result = (value + '');\r\n return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.uniqBy` without support for iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array} array The array to inspect.\r\n * @param {Function} [iteratee] The iteratee invoked per element.\r\n * @param {Function} [comparator] The comparator invoked per element.\r\n * @returns {Array} Returns the new duplicate free array.\r\n */\r\n function baseUniq(array, iteratee, comparator) {\r\n var index = -1,\r\n includes = arrayIncludes,\r\n length = array.length,\r\n isCommon = true,\r\n result = [],\r\n seen = result;\r\n\r\n if (comparator) {\r\n isCommon = false;\r\n includes = arrayIncludesWith;\r\n }\r\n else if (length >= LARGE_ARRAY_SIZE) {\r\n var set = iteratee ? null : createSet(array);\r\n if (set) {\r\n return setToArray(set);\r\n }\r\n isCommon = false;\r\n includes = cacheHas;\r\n seen = new SetCache;\r\n }\r\n else {\r\n seen = iteratee ? [] : result;\r\n }\r\n outer:\r\n while (++index < length) {\r\n var value = array[index],\r\n computed = iteratee ? iteratee(value) : value;\r\n\r\n value = (comparator || value !== 0) ? value : 0;\r\n if (isCommon && computed === computed) {\r\n var seenIndex = seen.length;\r\n while (seenIndex--) {\r\n if (seen[seenIndex] === computed) {\r\n continue outer;\r\n }\r\n }\r\n if (iteratee) {\r\n seen.push(computed);\r\n }\r\n result.push(value);\r\n }\r\n else if (!includes(seen, computed, comparator)) {\r\n if (seen !== result) {\r\n seen.push(computed);\r\n }\r\n result.push(value);\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * The base implementation of `_.unset`.\r\n *\r\n * @private\r\n * @param {Object} object The object to modify.\r\n * @param {Array|string} path The property path to unset.\r\n * @returns {boolean} Returns `true` if the property is deleted, else `false`.\r\n */\r\n function baseUnset(object, path) {\r\n path = castPath(path, object);\r\n object = parent(object, path);\r\n return object == null || delete object[toKey(last(path))];\r\n }\r\n\r\n /**\r\n * The base implementation of `_.update`.\r\n *\r\n * @private\r\n * @param {Object} object The object to modify.\r\n * @param {Array|string} path The path of the property to update.\r\n * @param {Function} updater The function to produce the updated value.\r\n * @param {Function} [customizer] The function to customize path creation.\r\n * @returns {Object} Returns `object`.\r\n */\r\n function baseUpdate(object, path, updater, customizer) {\r\n return baseSet(object, path, updater(baseGet(object, path)), customizer);\r\n }\r\n\r\n /**\r\n * The base implementation of methods like `_.dropWhile` and `_.takeWhile`\r\n * without support for iteratee shorthands.\r\n *\r\n * @private\r\n * @param {Array} array The array to query.\r\n * @param {Function} predicate The function invoked per iteration.\r\n * @param {boolean} [isDrop] Specify dropping elements instead of taking them.\r\n * @param {boolean} [fromRight] Specify iterating from right to left.\r\n * @returns {Array} Returns the slice of `array`.\r\n */\r\n function baseWhile(array, predicate, isDrop, fromRight) {\r\n var length = array.length,\r\n index = fromRight ? length : -1;\r\n\r\n while ((fromRight ? index-- : ++index < length) &&\r\n predicate(array[index], index, array)) {}\r\n\r\n return isDrop\r\n ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))\r\n : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));\r\n }\r\n\r\n /**\r\n * The base implementation of `wrapperValue` which returns the result of\r\n * performing a sequence of actions on the unwrapped `value`, where each\r\n * successive action is supplied the return value of the previous.\r\n *\r\n * @private\r\n * @param {*} value The unwrapped value.\r\n * @param {Array} actions Actions to perform to resolve the unwrapped value.\r\n * @returns {*} Returns the resolved value.\r\n */\r\n function baseWrapperValue(value, actions) {\r\n var result = value;\r\n if (result instanceof LazyWrapper) {\r\n result = result.value();\r\n }\r\n return arrayReduce(actions, function(result, action) {\r\n return action.func.apply(action.thisArg, arrayPush([result], action.args));\r\n }, result);\r\n }\r\n\r\n /**\r\n * The base implementation of methods like `_.xor`, without support for\r\n * iteratee shorthands, that accepts an array of arrays to inspect.\r\n *\r\n * @private\r\n * @param {Array} arrays The arrays to inspect.\r\n * @param {Function} [iteratee] The iteratee invoked per element.\r\n * @param {Function} [comparator] The comparator invoked per element.\r\n * @returns {Array} Returns the new array of values.\r\n */\r\n function baseXor(arrays, iteratee, comparator) {\r\n var length = arrays.length;\r\n if (length < 2) {\r\n return length ? baseUniq(arrays[0]) : [];\r\n }\r\n var index = -1,\r\n result = Array(length);\r\n\r\n while (++index < length) {\r\n var array = arrays[index],\r\n othIndex = -1;\r\n\r\n while (++othIndex < length) {\r\n if (othIndex != index) {\r\n result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);\r\n }\r\n }\r\n }\r\n return baseUniq(baseFlatten(result, 1), iteratee, comparator);\r\n }\r\n\r\n /**\r\n * This base implementation of `_.zipObject` which assigns values using `assignFunc`.\r\n *\r\n * @private\r\n * @param {Array} props The property identifiers.\r\n * @param {Array} values The property values.\r\n * @param {Function} assignFunc The function to assign values.\r\n * @returns {Object} Returns the new object.\r\n */\r\n function baseZipObject(props, values, assignFunc) {\r\n var index = -1,\r\n length = props.length,\r\n valsLength = values.length,\r\n result = {};\r\n\r\n while (++index < length) {\r\n var value = index < valsLength ? values[index] : undefined;\r\n assignFunc(result, props[index], value);\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Casts `value` to an empty array if it's not an array like object.\r\n *\r\n * @private\r\n * @param {*} value The value to inspect.\r\n * @returns {Array|Object} Returns the cast array-like object.\r\n */\r\n function castArrayLikeObject(value) {\r\n return isArrayLikeObject(value) ? value : [];\r\n }\r\n\r\n /**\r\n * Casts `value` to `identity` if it's not a function.\r\n *\r\n * @private\r\n * @param {*} value The value to inspect.\r\n * @returns {Function} Returns cast function.\r\n */\r\n function castFunction(value) {\r\n return typeof value == 'function' ? value : identity;\r\n }\r\n\r\n /**\r\n * Casts `value` to a path array if it's not one.\r\n *\r\n * @private\r\n * @param {*} value The value to inspect.\r\n * @param {Object} [object] The object to query keys on.\r\n * @returns {Array} Returns the cast property path array.\r\n */\r\n function castPath(value, object) {\r\n if (isArray(value)) {\r\n return value;\r\n }\r\n return isKey(value, object) ? [value] : stringToPath(toString(value));\r\n }\r\n\r\n /**\r\n * A `baseRest` alias which can be replaced with `identity` by module\r\n * replacement plugins.\r\n *\r\n * @private\r\n * @type {Function}\r\n * @param {Function} func The function to apply a rest parameter to.\r\n * @returns {Function} Returns the new function.\r\n */\r\n var castRest = baseRest;\r\n\r\n /**\r\n * Casts `array` to a slice if it's needed.\r\n *\r\n * @private\r\n * @param {Array} array The array to inspect.\r\n * @param {number} start The start position.\r\n * @param {number} [end=array.length] The end position.\r\n * @returns {Array} Returns the cast slice.\r\n */\r\n function castSlice(array, start, end) {\r\n var length = array.length;\r\n end = end === undefined ? length : end;\r\n return (!start && end >= length) ? array : baseSlice(array, start, end);\r\n }\r\n\r\n /**\r\n * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).\r\n *\r\n * @private\r\n * @param {number|Object} id The timer id or timeout object of the timer to clear.\r\n */\r\n var clearTimeout = ctxClearTimeout || function(id) {\r\n return root.clearTimeout(id);\r\n };\r\n\r\n /**\r\n * Creates a clone of `buffer`.\r\n *\r\n * @private\r\n * @param {Buffer} buffer The buffer to clone.\r\n * @param {boolean} [isDeep] Specify a deep clone.\r\n * @returns {Buffer} Returns the cloned buffer.\r\n */\r\n function cloneBuffer(buffer, isDeep) {\r\n if (isDeep) {\r\n return buffer.slice();\r\n }\r\n var length = buffer.length,\r\n result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);\r\n\r\n buffer.copy(result);\r\n return result;\r\n }\r\n\r\n /**\r\n * Creates a clone of `arrayBuffer`.\r\n *\r\n * @private\r\n * @param {ArrayBuffer} arrayBuffer The array buffer to clone.\r\n * @returns {ArrayBuffer} Returns the cloned array buffer.\r\n */\r\n function cloneArrayBuffer(arrayBuffer) {\r\n var result = new arrayBuffer.constructor(arrayBuffer.byteLength);\r\n new Uint8Array(result).set(new Uint8Array(arrayBuffer));\r\n return result;\r\n }\r\n\r\n /**\r\n * Creates a clone of `dataView`.\r\n *\r\n * @private\r\n * @param {Object} dataView The data view to clone.\r\n * @param {boolean} [isDeep] Specify a deep clone.\r\n * @returns {Object} Returns the cloned data view.\r\n */\r\n function cloneDataView(dataView, isDeep) {\r\n var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;\r\n return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);\r\n }\r\n\r\n /**\r\n * Creates a clone of `regexp`.\r\n *\r\n * @private\r\n * @param {Object} regexp The regexp to clone.\r\n * @returns {Object} Returns the cloned regexp.\r\n */\r\n function cloneRegExp(regexp) {\r\n var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));\r\n result.lastIndex = regexp.lastIndex;\r\n return result;\r\n }\r\n\r\n /**\r\n * Creates a clone of the `symbol` object.\r\n *\r\n * @private\r\n * @param {Object} symbol The symbol object to clone.\r\n * @returns {Object} Returns the cloned symbol object.\r\n */\r\n function cloneSymbol(symbol) {\r\n return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};\r\n }\r\n\r\n /**\r\n * Creates a clone of `typedArray`.\r\n *\r\n * @private\r\n * @param {Object} typedArray The typed array to clone.\r\n * @param {boolean} [isDeep] Specify a deep clone.\r\n * @returns {Object} Returns the cloned typed array.\r\n */\r\n function cloneTypedArray(typedArray, isDeep) {\r\n var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;\r\n return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);\r\n }\r\n\r\n /**\r\n * Compares values to sort them in ascending order.\r\n *\r\n * @private\r\n * @param {*} value The value to compare.\r\n * @param {*} other The other value to compare.\r\n * @returns {number} Returns the sort order indicator for `value`.\r\n */\r\n function compareAscending(value, other) {\r\n if (value !== other) {\r\n var valIsDefined = value !== undefined,\r\n valIsNull = value === null,\r\n valIsReflexive = value === value,\r\n valIsSymbol = isSymbol(value);\r\n\r\n var othIsDefined = other !== undefined,\r\n othIsNull = other === null,\r\n othIsReflexive = other === other,\r\n othIsSymbol = isSymbol(other);\r\n\r\n if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||\r\n (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||\r\n (valIsNull && othIsDefined && othIsReflexive) ||\r\n (!valIsDefined && othIsReflexive) ||\r\n !valIsReflexive) {\r\n return 1;\r\n }\r\n if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||\r\n (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||\r\n (othIsNull && valIsDefined && valIsReflexive) ||\r\n (!othIsDefined && valIsReflexive) ||\r\n !othIsReflexive) {\r\n return -1;\r\n }\r\n }\r\n return 0;\r\n }\r\n\r\n /**\r\n * Used by `_.orderBy` to compare multiple properties of a value to another\r\n * and stable sort them.\r\n *\r\n * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,\r\n * specify an order of \"desc\" for descending or \"asc\" for ascending sort order\r\n * of corresponding values.\r\n *\r\n * @private\r\n * @param {Object} object The object to compare.\r\n * @param {Object} other The other object to compare.\r\n * @param {boolean[]|string[]} orders The order to sort by for each property.\r\n * @returns {number} Returns the sort order indicator for `object`.\r\n */\r\n function compareMultiple(object, other, orders) {\r\n var index = -1,\r\n objCriteria = object.criteria,\r\n othCriteria = other.criteria,\r\n length = objCriteria.length,\r\n ordersLength = orders.length;\r\n\r\n while (++index < length) {\r\n var result = compareAscending(objCriteria[index], othCriteria[index]);\r\n if (result) {\r\n if (index >= ordersLength) {\r\n return result;\r\n }\r\n var order = orders[index];\r\n return result * (order == 'desc' ? -1 : 1);\r\n }\r\n }\r\n // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications\r\n // that causes it, under certain circumstances, to provide the same value for\r\n // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247\r\n // for more details.\r\n //\r\n // This also ensures a stable sort in V8 and other engines.\r\n // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.\r\n return object.index - other.index;\r\n }\r\n\r\n /**\r\n * Creates an array that is the composition of partially applied arguments,\r\n * placeholders, and provided arguments into a single array of arguments.\r\n *\r\n * @private\r\n * @param {Array} args The provided arguments.\r\n * @param {Array} partials The arguments to prepend to those provided.\r\n * @param {Array} holders The `partials` placeholder indexes.\r\n * @params {boolean} [isCurried] Specify composing for a curried function.\r\n * @returns {Array} Returns the new array of composed arguments.\r\n */\r\n function composeArgs(args, partials, holders, isCurried) {\r\n var argsIndex = -1,\r\n argsLength = args.length,\r\n holdersLength = holders.length,\r\n leftIndex = -1,\r\n leftLength = partials.length,\r\n rangeLength = nativeMax(argsLength - holdersLength, 0),\r\n result = Array(leftLength + rangeLength),\r\n isUncurried = !isCurried;\r\n\r\n while (++leftIndex < leftLength) {\r\n result[leftIndex] = partials[leftIndex];\r\n }\r\n while (++argsIndex < holdersLength) {\r\n if (isUncurried || argsIndex < argsLength) {\r\n result[holders[argsIndex]] = args[argsIndex];\r\n }\r\n }\r\n while (rangeLength--) {\r\n result[leftIndex++] = args[argsIndex++];\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * This function is like `composeArgs` except that the arguments composition\r\n * is tailored for `_.partialRight`.\r\n *\r\n * @private\r\n * @param {Array} args The provided arguments.\r\n * @param {Array} partials The arguments to append to those provided.\r\n * @param {Array} holders The `partials` placeholder indexes.\r\n * @params {boolean} [isCurried] Specify composing for a curried function.\r\n * @returns {Array} Returns the new array of composed arguments.\r\n */\r\n function composeArgsRight(args, partials, holders, isCurried) {\r\n var argsIndex = -1,\r\n argsLength = args.length,\r\n holdersIndex = -1,\r\n holdersLength = holders.length,\r\n rightIndex = -1,\r\n rightLength = partials.length,\r\n rangeLength = nativeMax(argsLength - holdersLength, 0),\r\n result = Array(rangeLength + rightLength),\r\n isUncurried = !isCurried;\r\n\r\n while (++argsIndex < rangeLength) {\r\n result[argsIndex] = args[argsIndex];\r\n }\r\n var offset = argsIndex;\r\n while (++rightIndex < rightLength) {\r\n result[offset + rightIndex] = partials[rightIndex];\r\n }\r\n while (++holdersIndex < holdersLength) {\r\n if (isUncurried || argsIndex < argsLength) {\r\n result[offset + holders[holdersIndex]] = args[argsIndex++];\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Copies the values of `source` to `array`.\r\n *\r\n * @private\r\n * @param {Array} source The array to copy values from.\r\n * @param {Array} [array=[]] The array to copy values to.\r\n * @returns {Array} Returns `array`.\r\n */\r\n function copyArray(source, array) {\r\n var index = -1,\r\n length = source.length;\r\n\r\n array || (array = Array(length));\r\n while (++index < length) {\r\n array[index] = source[index];\r\n }\r\n return array;\r\n }\r\n\r\n /**\r\n * Copies properties of `source` to `object`.\r\n *\r\n * @private\r\n * @param {Object} source The object to copy properties from.\r\n * @param {Array} props The property identifiers to copy.\r\n * @param {Object} [object={}] The object to copy properties to.\r\n * @param {Function} [customizer] The function to customize copied values.\r\n * @returns {Object} Returns `object`.\r\n */\r\n function copyObject(source, props, object, customizer) {\r\n var isNew = !object;\r\n object || (object = {});\r\n\r\n var index = -1,\r\n length = props.length;\r\n\r\n while (++index < length) {\r\n var key = props[index];\r\n\r\n var newValue = customizer\r\n ? customizer(object[key], source[key], key, object, source)\r\n : undefined;\r\n\r\n if (newValue === undefined) {\r\n newValue = source[key];\r\n }\r\n if (isNew) {\r\n baseAssignValue(object, key, newValue);\r\n } else {\r\n assignValue(object, key, newValue);\r\n }\r\n }\r\n return object;\r\n }\r\n\r\n /**\r\n * Copies own symbols of `source` to `object`.\r\n *\r\n * @private\r\n * @param {Object} source The object to copy symbols from.\r\n * @param {Object} [object={}] The object to copy symbols to.\r\n * @returns {Object} Returns `object`.\r\n */\r\n function copySymbols(source, object) {\r\n return copyObject(source, getSymbols(source), object);\r\n }\r\n\r\n /**\r\n * Copies own and inherited symbols of `source` to `object`.\r\n *\r\n * @private\r\n * @param {Object} source The object to copy symbols from.\r\n * @param {Object} [object={}] The object to copy symbols to.\r\n * @returns {Object} Returns `object`.\r\n */\r\n function copySymbolsIn(source, object) {\r\n return copyObject(source, getSymbolsIn(source), object);\r\n }\r\n\r\n /**\r\n * Creates a function like `_.groupBy`.\r\n *\r\n * @private\r\n * @param {Function} setter The function to set accumulator values.\r\n * @param {Function} [initializer] The accumulator object initializer.\r\n * @returns {Function} Returns the new aggregator function.\r\n */\r\n function createAggregator(setter, initializer) {\r\n return function(collection, iteratee) {\r\n var func = isArray(collection) ? arrayAggregator : baseAggregator,\r\n accumulator = initializer ? initializer() : {};\r\n\r\n return func(collection, setter, getIteratee(iteratee, 2), accumulator);\r\n };\r\n }\r\n\r\n /**\r\n * Creates a function like `_.assign`.\r\n *\r\n * @private\r\n * @param {Function} assigner The function to assign values.\r\n * @returns {Function} Returns the new assigner function.\r\n */\r\n function createAssigner(assigner) {\r\n return baseRest(function(object, sources) {\r\n var index = -1,\r\n length = sources.length,\r\n customizer = length > 1 ? sources[length - 1] : undefined,\r\n guard = length > 2 ? sources[2] : undefined;\r\n\r\n customizer = (assigner.length > 3 && typeof customizer == 'function')\r\n ? (length--, customizer)\r\n : undefined;\r\n\r\n if (guard && isIterateeCall(sources[0], sources[1], guard)) {\r\n customizer = length < 3 ? undefined : customizer;\r\n length = 1;\r\n }\r\n object = Object(object);\r\n while (++index < length) {\r\n var source = sources[index];\r\n if (source) {\r\n assigner(object, source, index, customizer);\r\n }\r\n }\r\n return object;\r\n });\r\n }\r\n\r\n /**\r\n * Creates a `baseEach` or `baseEachRight` function.\r\n *\r\n * @private\r\n * @param {Function} eachFunc The function to iterate over a collection.\r\n * @param {boolean} [fromRight] Specify iterating from right to left.\r\n * @returns {Function} Returns the new base function.\r\n */\r\n function createBaseEach(eachFunc, fromRight) {\r\n return function(collection, iteratee) {\r\n if (collection == null) {\r\n return collection;\r\n }\r\n if (!isArrayLike(collection)) {\r\n return eachFunc(collection, iteratee);\r\n }\r\n var length = collection.length,\r\n index = fromRight ? length : -1,\r\n iterable = Object(collection);\r\n\r\n while ((fromRight ? index-- : ++index < length)) {\r\n if (iteratee(iterable[index], index, iterable) === false) {\r\n break;\r\n }\r\n }\r\n return collection;\r\n };\r\n }\r\n\r\n /**\r\n * Creates a base function for methods like `_.forIn` and `_.forOwn`.\r\n *\r\n * @private\r\n * @param {boolean} [fromRight] Specify iterating from right to left.\r\n * @returns {Function} Returns the new base function.\r\n */\r\n function createBaseFor(fromRight) {\r\n return function(object, iteratee, keysFunc) {\r\n var index = -1,\r\n iterable = Object(object),\r\n props = keysFunc(object),\r\n length = props.length;\r\n\r\n while (length--) {\r\n var key = props[fromRight ? length : ++index];\r\n if (iteratee(iterable[key], key, iterable) === false) {\r\n break;\r\n }\r\n }\r\n return object;\r\n };\r\n }\r\n\r\n /**\r\n * Creates a function that wraps `func` to invoke it with the optional `this`\r\n * binding of `thisArg`.\r\n *\r\n * @private\r\n * @param {Function} func The function to wrap.\r\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\r\n * @param {*} [thisArg] The `this` binding of `func`.\r\n * @returns {Function} Returns the new wrapped function.\r\n */\r\n function createBind(func, bitmask, thisArg) {\r\n var isBind = bitmask & WRAP_BIND_FLAG,\r\n Ctor = createCtor(func);\r\n\r\n function wrapper() {\r\n var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\r\n return fn.apply(isBind ? thisArg : this, arguments);\r\n }\r\n return wrapper;\r\n }\r\n\r\n /**\r\n * Creates a function like `_.lowerFirst`.\r\n *\r\n * @private\r\n * @param {string} methodName The name of the `String` case method to use.\r\n * @returns {Function} Returns the new case function.\r\n */\r\n function createCaseFirst(methodName) {\r\n return function(string) {\r\n string = toString(string);\r\n\r\n var strSymbols = hasUnicode(string)\r\n ? stringToArray(string)\r\n : undefined;\r\n\r\n var chr = strSymbols\r\n ? strSymbols[0]\r\n : string.charAt(0);\r\n\r\n var trailing = strSymbols\r\n ? castSlice(strSymbols, 1).join('')\r\n : string.slice(1);\r\n\r\n return chr[methodName]() + trailing;\r\n };\r\n }\r\n\r\n /**\r\n * Creates a function like `_.camelCase`.\r\n *\r\n * @private\r\n * @param {Function} callback The function to combine each word.\r\n * @returns {Function} Returns the new compounder function.\r\n */\r\n function createCompounder(callback) {\r\n return function(string) {\r\n return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');\r\n };\r\n }\r\n\r\n /**\r\n * Creates a function that produces an instance of `Ctor` regardless of\r\n * whether it was invoked as part of a `new` expression or by `call` or `apply`.\r\n *\r\n * @private\r\n * @param {Function} Ctor The constructor to wrap.\r\n * @returns {Function} Returns the new wrapped function.\r\n */\r\n function createCtor(Ctor) {\r\n return function() {\r\n // Use a `switch` statement to work with class constructors. See\r\n // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist\r\n // for more details.\r\n var args = arguments;\r\n switch (args.length) {\r\n case 0: return new Ctor;\r\n case 1: return new Ctor(args[0]);\r\n case 2: return new Ctor(args[0], args[1]);\r\n case 3: return new Ctor(args[0], args[1], args[2]);\r\n case 4: return new Ctor(args[0], args[1], args[2], args[3]);\r\n case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);\r\n case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);\r\n case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);\r\n }\r\n var thisBinding = baseCreate(Ctor.prototype),\r\n result = Ctor.apply(thisBinding, args);\r\n\r\n // Mimic the constructor's `return` behavior.\r\n // See https://es5.github.io/#x13.2.2 for more details.\r\n return isObject(result) ? result : thisBinding;\r\n };\r\n }\r\n\r\n /**\r\n * Creates a function that wraps `func` to enable currying.\r\n *\r\n * @private\r\n * @param {Function} func The function to wrap.\r\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\r\n * @param {number} arity The arity of `func`.\r\n * @returns {Function} Returns the new wrapped function.\r\n */\r\n function createCurry(func, bitmask, arity) {\r\n var Ctor = createCtor(func);\r\n\r\n function wrapper() {\r\n var length = arguments.length,\r\n args = Array(length),\r\n index = length,\r\n placeholder = getHolder(wrapper);\r\n\r\n while (index--) {\r\n args[index] = arguments[index];\r\n }\r\n var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)\r\n ? []\r\n : replaceHolders(args, placeholder);\r\n\r\n length -= holders.length;\r\n if (length < arity) {\r\n return createRecurry(\r\n func, bitmask, createHybrid, wrapper.placeholder, undefined,\r\n args, holders, undefined, undefined, arity - length);\r\n }\r\n var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\r\n return apply(fn, this, args);\r\n }\r\n return wrapper;\r\n }\r\n\r\n /**\r\n * Creates a `_.find` or `_.findLast` function.\r\n *\r\n * @private\r\n * @param {Function} findIndexFunc The function to find the collection index.\r\n * @returns {Function} Returns the new find function.\r\n */\r\n function createFind(findIndexFunc) {\r\n return function(collection, predicate, fromIndex) {\r\n var iterable = Object(collection);\r\n if (!isArrayLike(collection)) {\r\n var iteratee = getIteratee(predicate, 3);\r\n collection = keys(collection);\r\n predicate = function(key) { return iteratee(iterable[key], key, iterable); };\r\n }\r\n var index = findIndexFunc(collection, predicate, fromIndex);\r\n return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;\r\n };\r\n }\r\n\r\n /**\r\n * Creates a `_.flow` or `_.flowRight` function.\r\n *\r\n * @private\r\n * @param {boolean} [fromRight] Specify iterating from right to left.\r\n * @returns {Function} Returns the new flow function.\r\n */\r\n function createFlow(fromRight) {\r\n return flatRest(function(funcs) {\r\n var length = funcs.length,\r\n index = length,\r\n prereq = LodashWrapper.prototype.thru;\r\n\r\n if (fromRight) {\r\n funcs.reverse();\r\n }\r\n while (index--) {\r\n var func = funcs[index];\r\n if (typeof func != 'function') {\r\n throw new TypeError(FUNC_ERROR_TEXT);\r\n }\r\n if (prereq && !wrapper && getFuncName(func) == 'wrapper') {\r\n var wrapper = new LodashWrapper([], true);\r\n }\r\n }\r\n index = wrapper ? index : length;\r\n while (++index < length) {\r\n func = funcs[index];\r\n\r\n var funcName = getFuncName(func),\r\n data = funcName == 'wrapper' ? getData(func) : undefined;\r\n\r\n if (data && isLaziable(data[0]) &&\r\n data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&\r\n !data[4].length && data[9] == 1\r\n ) {\r\n wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);\r\n } else {\r\n wrapper = (func.length == 1 && isLaziable(func))\r\n ? wrapper[funcName]()\r\n : wrapper.thru(func);\r\n }\r\n }\r\n return function() {\r\n var args = arguments,\r\n value = args[0];\r\n\r\n if (wrapper && args.length == 1 && isArray(value)) {\r\n return wrapper.plant(value).value();\r\n }\r\n var index = 0,\r\n result = length ? funcs[index].apply(this, args) : value;\r\n\r\n while (++index < length) {\r\n result = funcs[index].call(this, result);\r\n }\r\n return result;\r\n };\r\n });\r\n }\r\n\r\n /**\r\n * Creates a function that wraps `func` to invoke it with optional `this`\r\n * binding of `thisArg`, partial application, and currying.\r\n *\r\n * @private\r\n * @param {Function|string} func The function or method name to wrap.\r\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\r\n * @param {*} [thisArg] The `this` binding of `func`.\r\n * @param {Array} [partials] The arguments to prepend to those provided to\r\n * the new function.\r\n * @param {Array} [holders] The `partials` placeholder indexes.\r\n * @param {Array} [partialsRight] The arguments to append to those provided\r\n * to the new function.\r\n * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.\r\n * @param {Array} [argPos] The argument positions of the new function.\r\n * @param {number} [ary] The arity cap of `func`.\r\n * @param {number} [arity] The arity of `func`.\r\n * @returns {Function} Returns the new wrapped function.\r\n */\r\n function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {\r\n var isAry = bitmask & WRAP_ARY_FLAG,\r\n isBind = bitmask & WRAP_BIND_FLAG,\r\n isBindKey = bitmask & WRAP_BIND_KEY_FLAG,\r\n isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),\r\n isFlip = bitmask & WRAP_FLIP_FLAG,\r\n Ctor = isBindKey ? undefined : createCtor(func);\r\n\r\n function wrapper() {\r\n var length = arguments.length,\r\n args = Array(length),\r\n index = length;\r\n\r\n while (index--) {\r\n args[index] = arguments[index];\r\n }\r\n if (isCurried) {\r\n var placeholder = getHolder(wrapper),\r\n holdersCount = countHolders(args, placeholder);\r\n }\r\n if (partials) {\r\n args = composeArgs(args, partials, holders, isCurried);\r\n }\r\n if (partialsRight) {\r\n args = composeArgsRight(args, partialsRight, holdersRight, isCurried);\r\n }\r\n length -= holdersCount;\r\n if (isCurried && length < arity) {\r\n var newHolders = replaceHolders(args, placeholder);\r\n return createRecurry(\r\n func, bitmask, createHybrid, wrapper.placeholder, thisArg,\r\n args, newHolders, argPos, ary, arity - length\r\n );\r\n }\r\n var thisBinding = isBind ? thisArg : this,\r\n fn = isBindKey ? thisBinding[func] : func;\r\n\r\n length = args.length;\r\n if (argPos) {\r\n args = reorder(args, argPos);\r\n } else if (isFlip && length > 1) {\r\n args.reverse();\r\n }\r\n if (isAry && ary < length) {\r\n args.length = ary;\r\n }\r\n if (this && this !== root && this instanceof wrapper) {\r\n fn = Ctor || createCtor(fn);\r\n }\r\n return fn.apply(thisBinding, args);\r\n }\r\n return wrapper;\r\n }\r\n\r\n /**\r\n * Creates a function like `_.invertBy`.\r\n *\r\n * @private\r\n * @param {Function} setter The function to set accumulator values.\r\n * @param {Function} toIteratee The function to resolve iteratees.\r\n * @returns {Function} Returns the new inverter function.\r\n */\r\n function createInverter(setter, toIteratee) {\r\n return function(object, iteratee) {\r\n return baseInverter(object, setter, toIteratee(iteratee), {});\r\n };\r\n }\r\n\r\n /**\r\n * Creates a function that performs a mathematical operation on two values.\r\n *\r\n * @private\r\n * @param {Function} operator The function to perform the operation.\r\n * @param {number} [defaultValue] The value used for `undefined` arguments.\r\n * @returns {Function} Returns the new mathematical operation function.\r\n */\r\n function createMathOperation(operator, defaultValue) {\r\n return function(value, other) {\r\n var result;\r\n if (value === undefined && other === undefined) {\r\n return defaultValue;\r\n }\r\n if (value !== undefined) {\r\n result = value;\r\n }\r\n if (other !== undefined) {\r\n if (result === undefined) {\r\n return other;\r\n }\r\n if (typeof value == 'string' || typeof other == 'string') {\r\n value = baseToString(value);\r\n other = baseToString(other);\r\n } else {\r\n value = baseToNumber(value);\r\n other = baseToNumber(other);\r\n }\r\n result = operator(value, other);\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n /**\r\n * Creates a function like `_.over`.\r\n *\r\n * @private\r\n * @param {Function} arrayFunc The function to iterate over iteratees.\r\n * @returns {Function} Returns the new over function.\r\n */\r\n function createOver(arrayFunc) {\r\n return flatRest(function(iteratees) {\r\n iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\r\n return baseRest(function(args) {\r\n var thisArg = this;\r\n return arrayFunc(iteratees, function(iteratee) {\r\n return apply(iteratee, thisArg, args);\r\n });\r\n });\r\n });\r\n }\r\n\r\n /**\r\n * Creates the padding for `string` based on `length`. The `chars` string\r\n * is truncated if the number of characters exceeds `length`.\r\n *\r\n * @private\r\n * @param {number} length The padding length.\r\n * @param {string} [chars=' '] The string used as padding.\r\n * @returns {string} Returns the padding for `string`.\r\n */\r\n function createPadding(length, chars) {\r\n chars = chars === undefined ? ' ' : baseToString(chars);\r\n\r\n var charsLength = chars.length;\r\n if (charsLength < 2) {\r\n return charsLength ? baseRepeat(chars, length) : chars;\r\n }\r\n var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));\r\n return hasUnicode(chars)\r\n ? castSlice(stringToArray(result), 0, length).join('')\r\n : result.slice(0, length);\r\n }\r\n\r\n /**\r\n * Creates a function that wraps `func` to invoke it with the `this` binding\r\n * of `thisArg` and `partials` prepended to the arguments it receives.\r\n *\r\n * @private\r\n * @param {Function} func The function to wrap.\r\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\r\n * @param {*} thisArg The `this` binding of `func`.\r\n * @param {Array} partials The arguments to prepend to those provided to\r\n * the new function.\r\n * @returns {Function} Returns the new wrapped function.\r\n */\r\n function createPartial(func, bitmask, thisArg, partials) {\r\n var isBind = bitmask & WRAP_BIND_FLAG,\r\n Ctor = createCtor(func);\r\n\r\n function wrapper() {\r\n var argsIndex = -1,\r\n argsLength = arguments.length,\r\n leftIndex = -1,\r\n leftLength = partials.length,\r\n args = Array(leftLength + argsLength),\r\n fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\r\n\r\n while (++leftIndex < leftLength) {\r\n args[leftIndex] = partials[leftIndex];\r\n }\r\n while (argsLength--) {\r\n args[leftIndex++] = arguments[++argsIndex];\r\n }\r\n return apply(fn, isBind ? thisArg : this, args);\r\n }\r\n return wrapper;\r\n }\r\n\r\n /**\r\n * Creates a `_.range` or `_.rangeRight` function.\r\n *\r\n * @private\r\n * @param {boolean} [fromRight] Specify iterating from right to left.\r\n * @returns {Function} Returns the new range function.\r\n */\r\n function createRange(fromRight) {\r\n return function(start, end, step) {\r\n if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {\r\n end = step = undefined;\r\n }\r\n // Ensure the sign of `-0` is preserved.\r\n start = toFinite(start);\r\n if (end === undefined) {\r\n end = start;\r\n start = 0;\r\n } else {\r\n end = toFinite(end);\r\n }\r\n step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);\r\n return baseRange(start, end, step, fromRight);\r\n };\r\n }\r\n\r\n /**\r\n * Creates a function that performs a relational operation on two values.\r\n *\r\n * @private\r\n * @param {Function} operator The function to perform the operation.\r\n * @returns {Function} Returns the new relational operation function.\r\n */\r\n function createRelationalOperation(operator) {\r\n return function(value, other) {\r\n if (!(typeof value == 'string' && typeof other == 'string')) {\r\n value = toNumber(value);\r\n other = toNumber(other);\r\n }\r\n return operator(value, other);\r\n };\r\n }\r\n\r\n /**\r\n * Creates a function that wraps `func` to continue currying.\r\n *\r\n * @private\r\n * @param {Function} func The function to wrap.\r\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\r\n * @param {Function} wrapFunc The function to create the `func` wrapper.\r\n * @param {*} placeholder The placeholder value.\r\n * @param {*} [thisArg] The `this` binding of `func`.\r\n * @param {Array} [partials] The arguments to prepend to those provided to\r\n * the new function.\r\n * @param {Array} [holders] The `partials` placeholder indexes.\r\n * @param {Array} [argPos] The argument positions of the new function.\r\n * @param {number} [ary] The arity cap of `func`.\r\n * @param {number} [arity] The arity of `func`.\r\n * @returns {Function} Returns the new wrapped function.\r\n */\r\n function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {\r\n var isCurry = bitmask & WRAP_CURRY_FLAG,\r\n newHolders = isCurry ? holders : undefined,\r\n newHoldersRight = isCurry ? undefined : holders,\r\n newPartials = isCurry ? partials : undefined,\r\n newPartialsRight = isCurry ? undefined : partials;\r\n\r\n bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);\r\n bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);\r\n\r\n if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {\r\n bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);\r\n }\r\n var newData = [\r\n func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,\r\n newHoldersRight, argPos, ary, arity\r\n ];\r\n\r\n var result = wrapFunc.apply(undefined, newData);\r\n if (isLaziable(func)) {\r\n setData(result, newData);\r\n }\r\n result.placeholder = placeholder;\r\n return setWrapToString(result, func, bitmask);\r\n }\r\n\r\n /**\r\n * Creates a function like `_.round`.\r\n *\r\n * @private\r\n * @param {string} methodName The name of the `Math` method to use when rounding.\r\n * @returns {Function} Returns the new round function.\r\n */\r\n function createRound(methodName) {\r\n var func = Math[methodName];\r\n return function(number, precision) {\r\n number = toNumber(number);\r\n precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);\r\n if (precision && nativeIsFinite(number)) {\r\n // Shift with exponential notation to avoid floating-point issues.\r\n // See [MDN](https://mdn.io/round#Examples) for more details.\r\n var pair = (toString(number) + 'e').split('e'),\r\n value = func(pair[0] + 'e' + (+pair[1] + precision));\r\n\r\n pair = (toString(value) + 'e').split('e');\r\n return +(pair[0] + 'e' + (+pair[1] - precision));\r\n }\r\n return func(number);\r\n };\r\n }\r\n\r\n /**\r\n * Creates a set object of `values`.\r\n *\r\n * @private\r\n * @param {Array} values The values to add to the set.\r\n * @returns {Object} Returns the new set.\r\n */\r\n var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {\r\n return new Set(values);\r\n };\r\n\r\n /**\r\n * Creates a `_.toPairs` or `_.toPairsIn` function.\r\n *\r\n * @private\r\n * @param {Function} keysFunc The function to get the keys of a given object.\r\n * @returns {Function} Returns the new pairs function.\r\n */\r\n function createToPairs(keysFunc) {\r\n return function(object) {\r\n var tag = getTag(object);\r\n if (tag == mapTag) {\r\n return mapToArray(object);\r\n }\r\n if (tag == setTag) {\r\n return setToPairs(object);\r\n }\r\n return baseToPairs(object, keysFunc(object));\r\n };\r\n }\r\n\r\n /**\r\n * Creates a function that either curries or invokes `func` with optional\r\n * `this` binding and partially applied arguments.\r\n *\r\n * @private\r\n * @param {Function|string} func The function or method name to wrap.\r\n * @param {number} bitmask The bitmask flags.\r\n * 1 - `_.bind`\r\n * 2 - `_.bindKey`\r\n * 4 - `_.curry` or `_.curryRight` of a bound function\r\n * 8 - `_.curry`\r\n * 16 - `_.curryRight`\r\n * 32 - `_.partial`\r\n * 64 - `_.partialRight`\r\n * 128 - `_.rearg`\r\n * 256 - `_.ary`\r\n * 512 - `_.flip`\r\n * @param {*} [thisArg] The `this` binding of `func`.\r\n * @param {Array} [partials] The arguments to be partially applied.\r\n * @param {Array} [holders] The `partials` placeholder indexes.\r\n * @param {Array} [argPos] The argument positions of the new function.\r\n * @param {number} [ary] The arity cap of `func`.\r\n * @param {number} [arity] The arity of `func`.\r\n * @returns {Function} Returns the new wrapped function.\r\n */\r\n function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {\r\n var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;\r\n if (!isBindKey && typeof func != 'function') {\r\n throw new TypeError(FUNC_ERROR_TEXT);\r\n }\r\n var length = partials ? partials.length : 0;\r\n if (!length) {\r\n bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);\r\n partials = holders = undefined;\r\n }\r\n ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);\r\n arity = arity === undefined ? arity : toInteger(arity);\r\n length -= holders ? holders.length : 0;\r\n\r\n if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {\r\n var partialsRight = partials,\r\n holdersRight = holders;\r\n\r\n partials = holders = undefined;\r\n }\r\n var data = isBindKey ? undefined : getData(func);\r\n\r\n var newData = [\r\n func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,\r\n argPos, ary, arity\r\n ];\r\n\r\n if (data) {\r\n mergeData(newData, data);\r\n }\r\n func = newData[0];\r\n bitmask = newData[1];\r\n thisArg = newData[2];\r\n partials = newData[3];\r\n holders = newData[4];\r\n arity = newData[9] = newData[9] === undefined\r\n ? (isBindKey ? 0 : func.length)\r\n : nativeMax(newData[9] - length, 0);\r\n\r\n if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {\r\n bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);\r\n }\r\n if (!bitmask || bitmask == WRAP_BIND_FLAG) {\r\n var result = createBind(func, bitmask, thisArg);\r\n } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {\r\n result = createCurry(func, bitmask, arity);\r\n } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {\r\n result = createPartial(func, bitmask, thisArg, partials);\r\n } else {\r\n result = createHybrid.apply(undefined, newData);\r\n }\r\n var setter = data ? baseSetData : setData;\r\n return setWrapToString(setter(result, newData), func, bitmask);\r\n }\r\n\r\n /**\r\n * Used by `_.defaults` to customize its `_.assignIn` use to assign properties\r\n * of source objects to the destination object for all destination properties\r\n * that resolve to `undefined`.\r\n *\r\n * @private\r\n * @param {*} objValue The destination value.\r\n * @param {*} srcValue The source value.\r\n * @param {string} key The key of the property to assign.\r\n * @param {Object} object The parent object of `objValue`.\r\n * @returns {*} Returns the value to assign.\r\n */\r\n function customDefaultsAssignIn(objValue, srcValue, key, object) {\r\n if (objValue === undefined ||\r\n (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {\r\n return srcValue;\r\n }\r\n return objValue;\r\n }\r\n\r\n /**\r\n * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source\r\n * objects into destination objects that are passed thru.\r\n *\r\n * @private\r\n * @param {*} objValue The destination value.\r\n * @param {*} srcValue The source value.\r\n * @param {string} key The key of the property to merge.\r\n * @param {Object} object The parent object of `objValue`.\r\n * @param {Object} source The parent object of `srcValue`.\r\n * @param {Object} [stack] Tracks traversed source values and their merged\r\n * counterparts.\r\n * @returns {*} Returns the value to assign.\r\n */\r\n function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {\r\n if (isObject(objValue) && isObject(srcValue)) {\r\n // Recursively merge objects and arrays (susceptible to call stack limits).\r\n stack.set(srcValue, objValue);\r\n baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);\r\n stack['delete'](srcValue);\r\n }\r\n return objValue;\r\n }\r\n\r\n /**\r\n * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain\r\n * objects.\r\n *\r\n * @private\r\n * @param {*} value The value to inspect.\r\n * @param {string} key The key of the property to inspect.\r\n * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.\r\n */\r\n function customOmitClone(value) {\r\n return isPlainObject(value) ? undefined : value;\r\n }\r\n\r\n /**\r\n * A specialized version of `baseIsEqualDeep` for arrays with support for\r\n * partial deep comparisons.\r\n *\r\n * @private\r\n * @param {Array} array The array to compare.\r\n * @param {Array} other The other array to compare.\r\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\r\n * @param {Function} customizer The function to customize comparisons.\r\n * @param {Function} equalFunc The function to determine equivalents of values.\r\n * @param {Object} stack Tracks traversed `array` and `other` objects.\r\n * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\r\n */\r\n function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {\r\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\r\n arrLength = array.length,\r\n othLength = other.length;\r\n\r\n if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\r\n return false;\r\n }\r\n // Check that cyclic values are equal.\r\n var arrStacked = stack.get(array);\r\n var othStacked = stack.get(other);\r\n if (arrStacked && othStacked) {\r\n return arrStacked == other && othStacked == array;\r\n }\r\n var index = -1,\r\n result = true,\r\n seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;\r\n\r\n stack.set(array, other);\r\n stack.set(other, array);\r\n\r\n // Ignore non-index properties.\r\n while (++index < arrLength) {\r\n var arrValue = array[index],\r\n othValue = other[index];\r\n\r\n if (customizer) {\r\n var compared = isPartial\r\n ? customizer(othValue, arrValue, index, other, array, stack)\r\n : customizer(arrValue, othValue, index, array, other, stack);\r\n }\r\n if (compared !== undefined) {\r\n if (compared) {\r\n continue;\r\n }\r\n result = false;\r\n break;\r\n }\r\n // Recursively compare arrays (susceptible to call stack limits).\r\n if (seen) {\r\n if (!arraySome(other, function(othValue, othIndex) {\r\n if (!cacheHas(seen, othIndex) &&\r\n (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {\r\n return seen.push(othIndex);\r\n }\r\n })) {\r\n result = false;\r\n break;\r\n }\r\n } else if (!(\r\n arrValue === othValue ||\r\n equalFunc(arrValue, othValue, bitmask, customizer, stack)\r\n )) {\r\n result = false;\r\n break;\r\n }\r\n }\r\n stack['delete'](array);\r\n stack['delete'](other);\r\n return result;\r\n }\r\n\r\n /**\r\n * A specialized version of `baseIsEqualDeep` for comparing objects of\r\n * the same `toStringTag`.\r\n *\r\n * **Note:** This function only supports comparing values with tags of\r\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\r\n *\r\n * @private\r\n * @param {Object} object The object to compare.\r\n * @param {Object} other The other object to compare.\r\n * @param {string} tag The `toStringTag` of the objects to compare.\r\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\r\n * @param {Function} customizer The function to customize comparisons.\r\n * @param {Function} equalFunc The function to determine equivalents of values.\r\n * @param {Object} stack Tracks traversed `object` and `other` objects.\r\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\r\n */\r\n function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {\r\n switch (tag) {\r\n case dataViewTag:\r\n if ((object.byteLength != other.byteLength) ||\r\n (object.byteOffset != other.byteOffset)) {\r\n return false;\r\n }\r\n object = object.buffer;\r\n other = other.buffer;\r\n\r\n case arrayBufferTag:\r\n if ((object.byteLength != other.byteLength) ||\r\n !equalFunc(new Uint8Array(object), new Uint8Array(other))) {\r\n return false;\r\n }\r\n return true;\r\n\r\n case boolTag:\r\n case dateTag:\r\n case numberTag:\r\n // Coerce booleans to `1` or `0` and dates to milliseconds.\r\n // Invalid dates are coerced to `NaN`.\r\n return eq(+object, +other);\r\n\r\n case errorTag:\r\n return object.name == other.name && object.message == other.message;\r\n\r\n case regexpTag:\r\n case stringTag:\r\n // Coerce regexes to strings and treat strings, primitives and objects,\r\n // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring\r\n // for more details.\r\n return object == (other + '');\r\n\r\n case mapTag:\r\n var convert = mapToArray;\r\n\r\n case setTag:\r\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG;\r\n convert || (convert = setToArray);\r\n\r\n if (object.size != other.size && !isPartial) {\r\n return false;\r\n }\r\n // Assume cyclic values are equal.\r\n var stacked = stack.get(object);\r\n if (stacked) {\r\n return stacked == other;\r\n }\r\n bitmask |= COMPARE_UNORDERED_FLAG;\r\n\r\n // Recursively compare objects (susceptible to call stack limits).\r\n stack.set(object, other);\r\n var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);\r\n stack['delete'](object);\r\n return result;\r\n\r\n case symbolTag:\r\n if (symbolValueOf) {\r\n return symbolValueOf.call(object) == symbolValueOf.call(other);\r\n }\r\n }\r\n return false;\r\n }\r\n\r\n /**\r\n * A specialized version of `baseIsEqualDeep` for objects with support for\r\n * partial deep comparisons.\r\n *\r\n * @private\r\n * @param {Object} object The object to compare.\r\n * @param {Object} other The other object to compare.\r\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\r\n * @param {Function} customizer The function to customize comparisons.\r\n * @param {Function} equalFunc The function to determine equivalents of values.\r\n * @param {Object} stack Tracks traversed `object` and `other` objects.\r\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\r\n */\r\n function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {\r\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\r\n objProps = getAllKeys(object),\r\n objLength = objProps.length,\r\n othProps = getAllKeys(other),\r\n othLength = othProps.length;\r\n\r\n if (objLength != othLength && !isPartial) {\r\n return false;\r\n }\r\n var index = objLength;\r\n while (index--) {\r\n var key = objProps[index];\r\n if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {\r\n return false;\r\n }\r\n }\r\n // Check that cyclic values are equal.\r\n var objStacked = stack.get(object);\r\n var othStacked = stack.get(other);\r\n if (objStacked && othStacked) {\r\n return objStacked == other && othStacked == object;\r\n }\r\n var result = true;\r\n stack.set(object, other);\r\n stack.set(other, object);\r\n\r\n var skipCtor = isPartial;\r\n while (++index < objLength) {\r\n key = objProps[index];\r\n var objValue = object[key],\r\n othValue = other[key];\r\n\r\n if (customizer) {\r\n var compared = isPartial\r\n ? customizer(othValue, objValue, key, other, object, stack)\r\n : customizer(objValue, othValue, key, object, other, stack);\r\n }\r\n // Recursively compare objects (susceptible to call stack limits).\r\n if (!(compared === undefined\r\n ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))\r\n : compared\r\n )) {\r\n result = false;\r\n break;\r\n }\r\n skipCtor || (skipCtor = key == 'constructor');\r\n }\r\n if (result && !skipCtor) {\r\n var objCtor = object.constructor,\r\n othCtor = other.constructor;\r\n\r\n // Non `Object` object instances with different constructors are not equal.\r\n if (objCtor != othCtor &&\r\n ('constructor' in object && 'constructor' in other) &&\r\n !(typeof objCtor == 'function' && objCtor instanceof objCtor &&\r\n typeof othCtor == 'function' && othCtor instanceof othCtor)) {\r\n result = false;\r\n }\r\n }\r\n stack['delete'](object);\r\n stack['delete'](other);\r\n return result;\r\n }\r\n\r\n /**\r\n * A specialized version of `baseRest` which flattens the rest array.\r\n *\r\n * @private\r\n * @param {Function} func The function to apply a rest parameter to.\r\n * @returns {Function} Returns the new function.\r\n */\r\n function flatRest(func) {\r\n return setToString(overRest(func, undefined, flatten), func + '');\r\n }\r\n\r\n /**\r\n * Creates an array of own enumerable property names and symbols of `object`.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @returns {Array} Returns the array of property names and symbols.\r\n */\r\n function getAllKeys(object) {\r\n return baseGetAllKeys(object, keys, getSymbols);\r\n }\r\n\r\n /**\r\n * Creates an array of own and inherited enumerable property names and\r\n * symbols of `object`.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @returns {Array} Returns the array of property names and symbols.\r\n */\r\n function getAllKeysIn(object) {\r\n return baseGetAllKeys(object, keysIn, getSymbolsIn);\r\n }\r\n\r\n /**\r\n * Gets metadata for `func`.\r\n *\r\n * @private\r\n * @param {Function} func The function to query.\r\n * @returns {*} Returns the metadata for `func`.\r\n */\r\n var getData = !metaMap ? noop : function(func) {\r\n return metaMap.get(func);\r\n };\r\n\r\n /**\r\n * Gets the name of `func`.\r\n *\r\n * @private\r\n * @param {Function} func The function to query.\r\n * @returns {string} Returns the function name.\r\n */\r\n function getFuncName(func) {\r\n var result = (func.name + ''),\r\n array = realNames[result],\r\n length = hasOwnProperty.call(realNames, result) ? array.length : 0;\r\n\r\n while (length--) {\r\n var data = array[length],\r\n otherFunc = data.func;\r\n if (otherFunc == null || otherFunc == func) {\r\n return data.name;\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Gets the argument placeholder value for `func`.\r\n *\r\n * @private\r\n * @param {Function} func The function to inspect.\r\n * @returns {*} Returns the placeholder value.\r\n */\r\n function getHolder(func) {\r\n var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;\r\n return object.placeholder;\r\n }\r\n\r\n /**\r\n * Gets the appropriate \"iteratee\" function. If `_.iteratee` is customized,\r\n * this function returns the custom method, otherwise it returns `baseIteratee`.\r\n * If arguments are provided, the chosen function is invoked with them and\r\n * its result is returned.\r\n *\r\n * @private\r\n * @param {*} [value] The value to convert to an iteratee.\r\n * @param {number} [arity] The arity of the created iteratee.\r\n * @returns {Function} Returns the chosen function or its result.\r\n */\r\n function getIteratee() {\r\n var result = lodash.iteratee || iteratee;\r\n result = result === iteratee ? baseIteratee : result;\r\n return arguments.length ? result(arguments[0], arguments[1]) : result;\r\n }\r\n\r\n /**\r\n * Gets the data for `map`.\r\n *\r\n * @private\r\n * @param {Object} map The map to query.\r\n * @param {string} key The reference key.\r\n * @returns {*} Returns the map data.\r\n */\r\n function getMapData(map, key) {\r\n var data = map.__data__;\r\n return isKeyable(key)\r\n ? data[typeof key == 'string' ? 'string' : 'hash']\r\n : data.map;\r\n }\r\n\r\n /**\r\n * Gets the property names, values, and compare flags of `object`.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @returns {Array} Returns the match data of `object`.\r\n */\r\n function getMatchData(object) {\r\n var result = keys(object),\r\n length = result.length;\r\n\r\n while (length--) {\r\n var key = result[length],\r\n value = object[key];\r\n\r\n result[length] = [key, value, isStrictComparable(value)];\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Gets the native function at `key` of `object`.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @param {string} key The key of the method to get.\r\n * @returns {*} Returns the function if it's native, else `undefined`.\r\n */\r\n function getNative(object, key) {\r\n var value = getValue(object, key);\r\n return baseIsNative(value) ? value : undefined;\r\n }\r\n\r\n /**\r\n * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.\r\n *\r\n * @private\r\n * @param {*} value The value to query.\r\n * @returns {string} Returns the raw `toStringTag`.\r\n */\r\n function getRawTag(value) {\r\n var isOwn = hasOwnProperty.call(value, symToStringTag),\r\n tag = value[symToStringTag];\r\n\r\n try {\r\n value[symToStringTag] = undefined;\r\n var unmasked = true;\r\n } catch (e) {}\r\n\r\n var result = nativeObjectToString.call(value);\r\n if (unmasked) {\r\n if (isOwn) {\r\n value[symToStringTag] = tag;\r\n } else {\r\n delete value[symToStringTag];\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Creates an array of the own enumerable symbols of `object`.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @returns {Array} Returns the array of symbols.\r\n */\r\n var getSymbols = !nativeGetSymbols ? stubArray : function(object) {\r\n if (object == null) {\r\n return [];\r\n }\r\n object = Object(object);\r\n return arrayFilter(nativeGetSymbols(object), function(symbol) {\r\n return propertyIsEnumerable.call(object, symbol);\r\n });\r\n };\r\n\r\n /**\r\n * Creates an array of the own and inherited enumerable symbols of `object`.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @returns {Array} Returns the array of symbols.\r\n */\r\n var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {\r\n var result = [];\r\n while (object) {\r\n arrayPush(result, getSymbols(object));\r\n object = getPrototype(object);\r\n }\r\n return result;\r\n };\r\n\r\n /**\r\n * Gets the `toStringTag` of `value`.\r\n *\r\n * @private\r\n * @param {*} value The value to query.\r\n * @returns {string} Returns the `toStringTag`.\r\n */\r\n var getTag = baseGetTag;\r\n\r\n // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.\r\n if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||\r\n (Map && getTag(new Map) != mapTag) ||\r\n (Promise && getTag(Promise.resolve()) != promiseTag) ||\r\n (Set && getTag(new Set) != setTag) ||\r\n (WeakMap && getTag(new WeakMap) != weakMapTag)) {\r\n getTag = function(value) {\r\n var result = baseGetTag(value),\r\n Ctor = result == objectTag ? value.constructor : undefined,\r\n ctorString = Ctor ? toSource(Ctor) : '';\r\n\r\n if (ctorString) {\r\n switch (ctorString) {\r\n case dataViewCtorString: return dataViewTag;\r\n case mapCtorString: return mapTag;\r\n case promiseCtorString: return promiseTag;\r\n case setCtorString: return setTag;\r\n case weakMapCtorString: return weakMapTag;\r\n }\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n /**\r\n * Gets the view, applying any `transforms` to the `start` and `end` positions.\r\n *\r\n * @private\r\n * @param {number} start The start of the view.\r\n * @param {number} end The end of the view.\r\n * @param {Array} transforms The transformations to apply to the view.\r\n * @returns {Object} Returns an object containing the `start` and `end`\r\n * positions of the view.\r\n */\r\n function getView(start, end, transforms) {\r\n var index = -1,\r\n length = transforms.length;\r\n\r\n while (++index < length) {\r\n var data = transforms[index],\r\n size = data.size;\r\n\r\n switch (data.type) {\r\n case 'drop': start += size; break;\r\n case 'dropRight': end -= size; break;\r\n case 'take': end = nativeMin(end, start + size); break;\r\n case 'takeRight': start = nativeMax(start, end - size); break;\r\n }\r\n }\r\n return { 'start': start, 'end': end };\r\n }\r\n\r\n /**\r\n * Extracts wrapper details from the `source` body comment.\r\n *\r\n * @private\r\n * @param {string} source The source to inspect.\r\n * @returns {Array} Returns the wrapper details.\r\n */\r\n function getWrapDetails(source) {\r\n var match = source.match(reWrapDetails);\r\n return match ? match[1].split(reSplitDetails) : [];\r\n }\r\n\r\n /**\r\n * Checks if `path` exists on `object`.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @param {Array|string} path The path to check.\r\n * @param {Function} hasFunc The function to check properties.\r\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\r\n */\r\n function hasPath(object, path, hasFunc) {\r\n path = castPath(path, object);\r\n\r\n var index = -1,\r\n length = path.length,\r\n result = false;\r\n\r\n while (++index < length) {\r\n var key = toKey(path[index]);\r\n if (!(result = object != null && hasFunc(object, key))) {\r\n break;\r\n }\r\n object = object[key];\r\n }\r\n if (result || ++index != length) {\r\n return result;\r\n }\r\n length = object == null ? 0 : object.length;\r\n return !!length && isLength(length) && isIndex(key, length) &&\r\n (isArray(object) || isArguments(object));\r\n }\r\n\r\n /**\r\n * Initializes an array clone.\r\n *\r\n * @private\r\n * @param {Array} array The array to clone.\r\n * @returns {Array} Returns the initialized clone.\r\n */\r\n function initCloneArray(array) {\r\n var length = array.length,\r\n result = new array.constructor(length);\r\n\r\n // Add properties assigned by `RegExp#exec`.\r\n if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {\r\n result.index = array.index;\r\n result.input = array.input;\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Initializes an object clone.\r\n *\r\n * @private\r\n * @param {Object} object The object to clone.\r\n * @returns {Object} Returns the initialized clone.\r\n */\r\n function initCloneObject(object) {\r\n return (typeof object.constructor == 'function' && !isPrototype(object))\r\n ? baseCreate(getPrototype(object))\r\n : {};\r\n }\r\n\r\n /**\r\n * Initializes an object clone based on its `toStringTag`.\r\n *\r\n * **Note:** This function only supports cloning values with tags of\r\n * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.\r\n *\r\n * @private\r\n * @param {Object} object The object to clone.\r\n * @param {string} tag The `toStringTag` of the object to clone.\r\n * @param {boolean} [isDeep] Specify a deep clone.\r\n * @returns {Object} Returns the initialized clone.\r\n */\r\n function initCloneByTag(object, tag, isDeep) {\r\n var Ctor = object.constructor;\r\n switch (tag) {\r\n case arrayBufferTag:\r\n return cloneArrayBuffer(object);\r\n\r\n case boolTag:\r\n case dateTag:\r\n return new Ctor(+object);\r\n\r\n case dataViewTag:\r\n return cloneDataView(object, isDeep);\r\n\r\n case float32Tag: case float64Tag:\r\n case int8Tag: case int16Tag: case int32Tag:\r\n case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:\r\n return cloneTypedArray(object, isDeep);\r\n\r\n case mapTag:\r\n return new Ctor;\r\n\r\n case numberTag:\r\n case stringTag:\r\n return new Ctor(object);\r\n\r\n case regexpTag:\r\n return cloneRegExp(object);\r\n\r\n case setTag:\r\n return new Ctor;\r\n\r\n case symbolTag:\r\n return cloneSymbol(object);\r\n }\r\n }\r\n\r\n /**\r\n * Inserts wrapper `details` in a comment at the top of the `source` body.\r\n *\r\n * @private\r\n * @param {string} source The source to modify.\r\n * @returns {Array} details The details to insert.\r\n * @returns {string} Returns the modified source.\r\n */\r\n function insertWrapDetails(source, details) {\r\n var length = details.length;\r\n if (!length) {\r\n return source;\r\n }\r\n var lastIndex = length - 1;\r\n details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];\r\n details = details.join(length > 2 ? ', ' : ' ');\r\n return source.replace(reWrapComment, '{\\n/* [wrapped with ' + details + '] */\\n');\r\n }\r\n\r\n /**\r\n * Checks if `value` is a flattenable `arguments` object or array.\r\n *\r\n * @private\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.\r\n */\r\n function isFlattenable(value) {\r\n return isArray(value) || isArguments(value) ||\r\n !!(spreadableSymbol && value && value[spreadableSymbol]);\r\n }\r\n\r\n /**\r\n * Checks if `value` is a valid array-like index.\r\n *\r\n * @private\r\n * @param {*} value The value to check.\r\n * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\r\n * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\r\n */\r\n function isIndex(value, length) {\r\n var type = typeof value;\r\n length = length == null ? MAX_SAFE_INTEGER : length;\r\n\r\n return !!length &&\r\n (type == 'number' ||\r\n (type != 'symbol' && reIsUint.test(value))) &&\r\n (value > -1 && value % 1 == 0 && value < length);\r\n }\r\n\r\n /**\r\n * Checks if the given arguments are from an iteratee call.\r\n *\r\n * @private\r\n * @param {*} value The potential iteratee value argument.\r\n * @param {*} index The potential iteratee index or key argument.\r\n * @param {*} object The potential iteratee object argument.\r\n * @returns {boolean} Returns `true` if the arguments are from an iteratee call,\r\n * else `false`.\r\n */\r\n function isIterateeCall(value, index, object) {\r\n if (!isObject(object)) {\r\n return false;\r\n }\r\n var type = typeof index;\r\n if (type == 'number'\r\n ? (isArrayLike(object) && isIndex(index, object.length))\r\n : (type == 'string' && index in object)\r\n ) {\r\n return eq(object[index], value);\r\n }\r\n return false;\r\n }\r\n\r\n /**\r\n * Checks if `value` is a property name and not a property path.\r\n *\r\n * @private\r\n * @param {*} value The value to check.\r\n * @param {Object} [object] The object to query keys on.\r\n * @returns {boolean} Returns `true` if `value` is a property name, else `false`.\r\n */\r\n function isKey(value, object) {\r\n if (isArray(value)) {\r\n return false;\r\n }\r\n var type = typeof value;\r\n if (type == 'number' || type == 'symbol' || type == 'boolean' ||\r\n value == null || isSymbol(value)) {\r\n return true;\r\n }\r\n return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||\r\n (object != null && value in Object(object));\r\n }\r\n\r\n /**\r\n * Checks if `value` is suitable for use as unique object key.\r\n *\r\n * @private\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\r\n */\r\n function isKeyable(value) {\r\n var type = typeof value;\r\n return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')\r\n ? (value !== '__proto__')\r\n : (value === null);\r\n }\r\n\r\n /**\r\n * Checks if `func` has a lazy counterpart.\r\n *\r\n * @private\r\n * @param {Function} func The function to check.\r\n * @returns {boolean} Returns `true` if `func` has a lazy counterpart,\r\n * else `false`.\r\n */\r\n function isLaziable(func) {\r\n var funcName = getFuncName(func),\r\n other = lodash[funcName];\r\n\r\n if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {\r\n return false;\r\n }\r\n if (func === other) {\r\n return true;\r\n }\r\n var data = getData(other);\r\n return !!data && func === data[0];\r\n }\r\n\r\n /**\r\n * Checks if `func` has its source masked.\r\n *\r\n * @private\r\n * @param {Function} func The function to check.\r\n * @returns {boolean} Returns `true` if `func` is masked, else `false`.\r\n */\r\n function isMasked(func) {\r\n return !!maskSrcKey && (maskSrcKey in func);\r\n }\r\n\r\n /**\r\n * Checks if `func` is capable of being masked.\r\n *\r\n * @private\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `func` is maskable, else `false`.\r\n */\r\n var isMaskable = coreJsData ? isFunction : stubFalse;\r\n\r\n /**\r\n * Checks if `value` is likely a prototype object.\r\n *\r\n * @private\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\r\n */\r\n function isPrototype(value) {\r\n var Ctor = value && value.constructor,\r\n proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;\r\n\r\n return value === proto;\r\n }\r\n\r\n /**\r\n * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.\r\n *\r\n * @private\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` if suitable for strict\r\n * equality comparisons, else `false`.\r\n */\r\n function isStrictComparable(value) {\r\n return value === value && !isObject(value);\r\n }\r\n\r\n /**\r\n * A specialized version of `matchesProperty` for source values suitable\r\n * for strict equality comparisons, i.e. `===`.\r\n *\r\n * @private\r\n * @param {string} key The key of the property to get.\r\n * @param {*} srcValue The value to match.\r\n * @returns {Function} Returns the new spec function.\r\n */\r\n function matchesStrictComparable(key, srcValue) {\r\n return function(object) {\r\n if (object == null) {\r\n return false;\r\n }\r\n return object[key] === srcValue &&\r\n (srcValue !== undefined || (key in Object(object)));\r\n };\r\n }\r\n\r\n /**\r\n * A specialized version of `_.memoize` which clears the memoized function's\r\n * cache when it exceeds `MAX_MEMOIZE_SIZE`.\r\n *\r\n * @private\r\n * @param {Function} func The function to have its output memoized.\r\n * @returns {Function} Returns the new memoized function.\r\n */\r\n function memoizeCapped(func) {\r\n var result = memoize(func, function(key) {\r\n if (cache.size === MAX_MEMOIZE_SIZE) {\r\n cache.clear();\r\n }\r\n return key;\r\n });\r\n\r\n var cache = result.cache;\r\n return result;\r\n }\r\n\r\n /**\r\n * Merges the function metadata of `source` into `data`.\r\n *\r\n * Merging metadata reduces the number of wrappers used to invoke a function.\r\n * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`\r\n * may be applied regardless of execution order. Methods like `_.ary` and\r\n * `_.rearg` modify function arguments, making the order in which they are\r\n * executed important, preventing the merging of metadata. However, we make\r\n * an exception for a safe combined case where curried functions have `_.ary`\r\n * and or `_.rearg` applied.\r\n *\r\n * @private\r\n * @param {Array} data The destination metadata.\r\n * @param {Array} source The source metadata.\r\n * @returns {Array} Returns `data`.\r\n */\r\n function mergeData(data, source) {\r\n var bitmask = data[1],\r\n srcBitmask = source[1],\r\n newBitmask = bitmask | srcBitmask,\r\n isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);\r\n\r\n var isCombo =\r\n ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||\r\n ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||\r\n ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));\r\n\r\n // Exit early if metadata can't be merged.\r\n if (!(isCommon || isCombo)) {\r\n return data;\r\n }\r\n // Use source `thisArg` if available.\r\n if (srcBitmask & WRAP_BIND_FLAG) {\r\n data[2] = source[2];\r\n // Set when currying a bound function.\r\n newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;\r\n }\r\n // Compose partial arguments.\r\n var value = source[3];\r\n if (value) {\r\n var partials = data[3];\r\n data[3] = partials ? composeArgs(partials, value, source[4]) : value;\r\n data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];\r\n }\r\n // Compose partial right arguments.\r\n value = source[5];\r\n if (value) {\r\n partials = data[5];\r\n data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;\r\n data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];\r\n }\r\n // Use source `argPos` if available.\r\n value = source[7];\r\n if (value) {\r\n data[7] = value;\r\n }\r\n // Use source `ary` if it's smaller.\r\n if (srcBitmask & WRAP_ARY_FLAG) {\r\n data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);\r\n }\r\n // Use source `arity` if one is not provided.\r\n if (data[9] == null) {\r\n data[9] = source[9];\r\n }\r\n // Use source `func` and merge bitmasks.\r\n data[0] = source[0];\r\n data[1] = newBitmask;\r\n\r\n return data;\r\n }\r\n\r\n /**\r\n * This function is like\r\n * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\r\n * except that it includes inherited enumerable properties.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @returns {Array} Returns the array of property names.\r\n */\r\n function nativeKeysIn(object) {\r\n var result = [];\r\n if (object != null) {\r\n for (var key in Object(object)) {\r\n result.push(key);\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Converts `value` to a string using `Object.prototype.toString`.\r\n *\r\n * @private\r\n * @param {*} value The value to convert.\r\n * @returns {string} Returns the converted string.\r\n */\r\n function objectToString(value) {\r\n return nativeObjectToString.call(value);\r\n }\r\n\r\n /**\r\n * A specialized version of `baseRest` which transforms the rest array.\r\n *\r\n * @private\r\n * @param {Function} func The function to apply a rest parameter to.\r\n * @param {number} [start=func.length-1] The start position of the rest parameter.\r\n * @param {Function} transform The rest array transform.\r\n * @returns {Function} Returns the new function.\r\n */\r\n function overRest(func, start, transform) {\r\n start = nativeMax(start === undefined ? (func.length - 1) : start, 0);\r\n return function() {\r\n var args = arguments,\r\n index = -1,\r\n length = nativeMax(args.length - start, 0),\r\n array = Array(length);\r\n\r\n while (++index < length) {\r\n array[index] = args[start + index];\r\n }\r\n index = -1;\r\n var otherArgs = Array(start + 1);\r\n while (++index < start) {\r\n otherArgs[index] = args[index];\r\n }\r\n otherArgs[start] = transform(array);\r\n return apply(func, this, otherArgs);\r\n };\r\n }\r\n\r\n /**\r\n * Gets the parent value at `path` of `object`.\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @param {Array} path The path to get the parent value of.\r\n * @returns {*} Returns the parent value.\r\n */\r\n function parent(object, path) {\r\n return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));\r\n }\r\n\r\n /**\r\n * Reorder `array` according to the specified indexes where the element at\r\n * the first index is assigned as the first element, the element at\r\n * the second index is assigned as the second element, and so on.\r\n *\r\n * @private\r\n * @param {Array} array The array to reorder.\r\n * @param {Array} indexes The arranged array indexes.\r\n * @returns {Array} Returns `array`.\r\n */\r\n function reorder(array, indexes) {\r\n var arrLength = array.length,\r\n length = nativeMin(indexes.length, arrLength),\r\n oldArray = copyArray(array);\r\n\r\n while (length--) {\r\n var index = indexes[length];\r\n array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;\r\n }\r\n return array;\r\n }\r\n\r\n /**\r\n * Gets the value at `key`, unless `key` is \"__proto__\" or \"constructor\".\r\n *\r\n * @private\r\n * @param {Object} object The object to query.\r\n * @param {string} key The key of the property to get.\r\n * @returns {*} Returns the property value.\r\n */\r\n function safeGet(object, key) {\r\n if (key === 'constructor' && typeof object[key] === 'function') {\r\n return;\r\n }\r\n\r\n if (key == '__proto__') {\r\n return;\r\n }\r\n\r\n return object[key];\r\n }\r\n\r\n /**\r\n * Sets metadata for `func`.\r\n *\r\n * **Note:** If this function becomes hot, i.e. is invoked a lot in a short\r\n * period of time, it will trip its breaker and transition to an identity\r\n * function to avoid garbage collection pauses in V8. See\r\n * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)\r\n * for more details.\r\n *\r\n * @private\r\n * @param {Function} func The function to associate metadata with.\r\n * @param {*} data The metadata.\r\n * @returns {Function} Returns `func`.\r\n */\r\n var setData = shortOut(baseSetData);\r\n\r\n /**\r\n * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).\r\n *\r\n * @private\r\n * @param {Function} func The function to delay.\r\n * @param {number} wait The number of milliseconds to delay invocation.\r\n * @returns {number|Object} Returns the timer id or timeout object.\r\n */\r\n var setTimeout = ctxSetTimeout || function(func, wait) {\r\n return root.setTimeout(func, wait);\r\n };\r\n\r\n /**\r\n * Sets the `toString` method of `func` to return `string`.\r\n *\r\n * @private\r\n * @param {Function} func The function to modify.\r\n * @param {Function} string The `toString` result.\r\n * @returns {Function} Returns `func`.\r\n */\r\n var setToString = shortOut(baseSetToString);\r\n\r\n /**\r\n * Sets the `toString` method of `wrapper` to mimic the source of `reference`\r\n * with wrapper details in a comment at the top of the source body.\r\n *\r\n * @private\r\n * @param {Function} wrapper The function to modify.\r\n * @param {Function} reference The reference function.\r\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\r\n * @returns {Function} Returns `wrapper`.\r\n */\r\n function setWrapToString(wrapper, reference, bitmask) {\r\n var source = (reference + '');\r\n return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));\r\n }\r\n\r\n /**\r\n * Creates a function that'll short out and invoke `identity` instead\r\n * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`\r\n * milliseconds.\r\n *\r\n * @private\r\n * @param {Function} func The function to restrict.\r\n * @returns {Function} Returns the new shortable function.\r\n */\r\n function shortOut(func) {\r\n var count = 0,\r\n lastCalled = 0;\r\n\r\n return function() {\r\n var stamp = nativeNow(),\r\n remaining = HOT_SPAN - (stamp - lastCalled);\r\n\r\n lastCalled = stamp;\r\n if (remaining > 0) {\r\n if (++count >= HOT_COUNT) {\r\n return arguments[0];\r\n }\r\n } else {\r\n count = 0;\r\n }\r\n return func.apply(undefined, arguments);\r\n };\r\n }\r\n\r\n /**\r\n * A specialized version of `_.shuffle` which mutates and sets the size of `array`.\r\n *\r\n * @private\r\n * @param {Array} array The array to shuffle.\r\n * @param {number} [size=array.length] The size of `array`.\r\n * @returns {Array} Returns `array`.\r\n */\r\n function shuffleSelf(array, size) {\r\n var index = -1,\r\n length = array.length,\r\n lastIndex = length - 1;\r\n\r\n size = size === undefined ? length : size;\r\n while (++index < size) {\r\n var rand = baseRandom(index, lastIndex),\r\n value = array[rand];\r\n\r\n array[rand] = array[index];\r\n array[index] = value;\r\n }\r\n array.length = size;\r\n return array;\r\n }\r\n\r\n /**\r\n * Converts `string` to a property path array.\r\n *\r\n * @private\r\n * @param {string} string The string to convert.\r\n * @returns {Array} Returns the property path array.\r\n */\r\n var stringToPath = memoizeCapped(function(string) {\r\n var result = [];\r\n if (string.charCodeAt(0) === 46 /* . */) {\r\n result.push('');\r\n }\r\n string.replace(rePropName, function(match, number, quote, subString) {\r\n result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));\r\n });\r\n return result;\r\n });\r\n\r\n /**\r\n * Converts `value` to a string key if it's not a string or symbol.\r\n *\r\n * @private\r\n * @param {*} value The value to inspect.\r\n * @returns {string|symbol} Returns the key.\r\n */\r\n function toKey(value) {\r\n if (typeof value == 'string' || isSymbol(value)) {\r\n return value;\r\n }\r\n var result = (value + '');\r\n return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\r\n }\r\n\r\n /**\r\n * Converts `func` to its source code.\r\n *\r\n * @private\r\n * @param {Function} func The function to convert.\r\n * @returns {string} Returns the source code.\r\n */\r\n function toSource(func) {\r\n if (func != null) {\r\n try {\r\n return funcToString.call(func);\r\n } catch (e) {}\r\n try {\r\n return (func + '');\r\n } catch (e) {}\r\n }\r\n return '';\r\n }\r\n\r\n /**\r\n * Updates wrapper `details` based on `bitmask` flags.\r\n *\r\n * @private\r\n * @returns {Array} details The details to modify.\r\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\r\n * @returns {Array} Returns `details`.\r\n */\r\n function updateWrapDetails(details, bitmask) {\r\n arrayEach(wrapFlags, function(pair) {\r\n var value = '_.' + pair[0];\r\n if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {\r\n details.push(value);\r\n }\r\n });\r\n return details.sort();\r\n }\r\n\r\n /**\r\n * Creates a clone of `wrapper`.\r\n *\r\n * @private\r\n * @param {Object} wrapper The wrapper to clone.\r\n * @returns {Object} Returns the cloned wrapper.\r\n */\r\n function wrapperClone(wrapper) {\r\n if (wrapper instanceof LazyWrapper) {\r\n return wrapper.clone();\r\n }\r\n var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);\r\n result.__actions__ = copyArray(wrapper.__actions__);\r\n result.__index__ = wrapper.__index__;\r\n result.__values__ = wrapper.__values__;\r\n return result;\r\n }\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Creates an array of elements split into groups the length of `size`.\r\n * If `array` can't be split evenly, the final chunk will be the remaining\r\n * elements.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Array\r\n * @param {Array} array The array to process.\r\n * @param {number} [size=1] The length of each chunk\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {Array} Returns the new array of chunks.\r\n * @example\r\n *\r\n * _.chunk(['a', 'b', 'c', 'd'], 2);\r\n * // => [['a', 'b'], ['c', 'd']]\r\n *\r\n * _.chunk(['a', 'b', 'c', 'd'], 3);\r\n * // => [['a', 'b', 'c'], ['d']]\r\n */\r\n function chunk(array, size, guard) {\r\n if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {\r\n size = 1;\r\n } else {\r\n size = nativeMax(toInteger(size), 0);\r\n }\r\n var length = array == null ? 0 : array.length;\r\n if (!length || size < 1) {\r\n return [];\r\n }\r\n var index = 0,\r\n resIndex = 0,\r\n result = Array(nativeCeil(length / size));\r\n\r\n while (index < length) {\r\n result[resIndex++] = baseSlice(array, index, (index += size));\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Creates an array with all falsey values removed. The values `false`, `null`,\r\n * `0`, `\"\"`, `undefined`, and `NaN` are falsey.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Array\r\n * @param {Array} array The array to compact.\r\n * @returns {Array} Returns the new array of filtered values.\r\n * @example\r\n *\r\n * _.compact([0, 1, false, 2, '', 3]);\r\n * // => [1, 2, 3]\r\n */\r\n function compact(array) {\r\n var index = -1,\r\n length = array == null ? 0 : array.length,\r\n resIndex = 0,\r\n result = [];\r\n\r\n while (++index < length) {\r\n var value = array[index];\r\n if (value) {\r\n result[resIndex++] = value;\r\n }\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Creates a new array concatenating `array` with any additional arrays\r\n * and/or values.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} array The array to concatenate.\r\n * @param {...*} [values] The values to concatenate.\r\n * @returns {Array} Returns the new concatenated array.\r\n * @example\r\n *\r\n * var array = [1];\r\n * var other = _.concat(array, 2, [3], [[4]]);\r\n *\r\n * console.log(other);\r\n * // => [1, 2, 3, [4]]\r\n *\r\n * console.log(array);\r\n * // => [1]\r\n */\r\n function concat() {\r\n var length = arguments.length;\r\n if (!length) {\r\n return [];\r\n }\r\n var args = Array(length - 1),\r\n array = arguments[0],\r\n index = length;\r\n\r\n while (index--) {\r\n args[index - 1] = arguments[index];\r\n }\r\n return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));\r\n }\r\n\r\n /**\r\n * Creates an array of `array` values not included in the other given arrays\r\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\r\n * for equality comparisons. The order and references of result values are\r\n * determined by the first array.\r\n *\r\n * **Note:** Unlike `_.pullAll`, this method returns a new array.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Array\r\n * @param {Array} array The array to inspect.\r\n * @param {...Array} [values] The values to exclude.\r\n * @returns {Array} Returns the new array of filtered values.\r\n * @see _.without, _.xor\r\n * @example\r\n *\r\n * _.difference([2, 1], [2, 3]);\r\n * // => [1]\r\n */\r\n var difference = baseRest(function(array, values) {\r\n return isArrayLikeObject(array)\r\n ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))\r\n : [];\r\n });\r\n\r\n /**\r\n * This method is like `_.difference` except that it accepts `iteratee` which\r\n * is invoked for each element of `array` and `values` to generate the criterion\r\n * by which they're compared. The order and references of result values are\r\n * determined by the first array. The iteratee is invoked with one argument:\r\n * (value).\r\n *\r\n * **Note:** Unlike `_.pullAllBy`, this method returns a new array.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} array The array to inspect.\r\n * @param {...Array} [values] The values to exclude.\r\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\r\n * @returns {Array} Returns the new array of filtered values.\r\n * @example\r\n *\r\n * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);\r\n * // => [1.2]\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');\r\n * // => [{ 'x': 2 }]\r\n */\r\n var differenceBy = baseRest(function(array, values) {\r\n var iteratee = last(values);\r\n if (isArrayLikeObject(iteratee)) {\r\n iteratee = undefined;\r\n }\r\n return isArrayLikeObject(array)\r\n ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))\r\n : [];\r\n });\r\n\r\n /**\r\n * This method is like `_.difference` except that it accepts `comparator`\r\n * which is invoked to compare elements of `array` to `values`. The order and\r\n * references of result values are determined by the first array. The comparator\r\n * is invoked with two arguments: (arrVal, othVal).\r\n *\r\n * **Note:** Unlike `_.pullAllWith`, this method returns a new array.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} array The array to inspect.\r\n * @param {...Array} [values] The values to exclude.\r\n * @param {Function} [comparator] The comparator invoked per element.\r\n * @returns {Array} Returns the new array of filtered values.\r\n * @example\r\n *\r\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\r\n *\r\n * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);\r\n * // => [{ 'x': 2, 'y': 1 }]\r\n */\r\n var differenceWith = baseRest(function(array, values) {\r\n var comparator = last(values);\r\n if (isArrayLikeObject(comparator)) {\r\n comparator = undefined;\r\n }\r\n return isArrayLikeObject(array)\r\n ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)\r\n : [];\r\n });\r\n\r\n /**\r\n * Creates a slice of `array` with `n` elements dropped from the beginning.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.5.0\r\n * @category Array\r\n * @param {Array} array The array to query.\r\n * @param {number} [n=1] The number of elements to drop.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {Array} Returns the slice of `array`.\r\n * @example\r\n *\r\n * _.drop([1, 2, 3]);\r\n * // => [2, 3]\r\n *\r\n * _.drop([1, 2, 3], 2);\r\n * // => [3]\r\n *\r\n * _.drop([1, 2, 3], 5);\r\n * // => []\r\n *\r\n * _.drop([1, 2, 3], 0);\r\n * // => [1, 2, 3]\r\n */\r\n function drop(array, n, guard) {\r\n var length = array == null ? 0 : array.length;\r\n if (!length) {\r\n return [];\r\n }\r\n n = (guard || n === undefined) ? 1 : toInteger(n);\r\n return baseSlice(array, n < 0 ? 0 : n, length);\r\n }\r\n\r\n /**\r\n * Creates a slice of `array` with `n` elements dropped from the end.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Array\r\n * @param {Array} array The array to query.\r\n * @param {number} [n=1] The number of elements to drop.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {Array} Returns the slice of `array`.\r\n * @example\r\n *\r\n * _.dropRight([1, 2, 3]);\r\n * // => [1, 2]\r\n *\r\n * _.dropRight([1, 2, 3], 2);\r\n * // => [1]\r\n *\r\n * _.dropRight([1, 2, 3], 5);\r\n * // => []\r\n *\r\n * _.dropRight([1, 2, 3], 0);\r\n * // => [1, 2, 3]\r\n */\r\n function dropRight(array, n, guard) {\r\n var length = array == null ? 0 : array.length;\r\n if (!length) {\r\n return [];\r\n }\r\n n = (guard || n === undefined) ? 1 : toInteger(n);\r\n n = length - n;\r\n return baseSlice(array, 0, n < 0 ? 0 : n);\r\n }\r\n\r\n /**\r\n * Creates a slice of `array` excluding elements dropped from the end.\r\n * Elements are dropped until `predicate` returns falsey. The predicate is\r\n * invoked with three arguments: (value, index, array).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Array\r\n * @param {Array} array The array to query.\r\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\r\n * @returns {Array} Returns the slice of `array`.\r\n * @example\r\n *\r\n * var users = [\r\n * { 'user': 'barney', 'active': true },\r\n * { 'user': 'fred', 'active': false },\r\n * { 'user': 'pebbles', 'active': false }\r\n * ];\r\n *\r\n * _.dropRightWhile(users, function(o) { return !o.active; });\r\n * // => objects for ['barney']\r\n *\r\n * // The `_.matches` iteratee shorthand.\r\n * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });\r\n * // => objects for ['barney', 'fred']\r\n *\r\n * // The `_.matchesProperty` iteratee shorthand.\r\n * _.dropRightWhile(users, ['active', false]);\r\n * // => objects for ['barney']\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.dropRightWhile(users, 'active');\r\n * // => objects for ['barney', 'fred', 'pebbles']\r\n */\r\n function dropRightWhile(array, predicate) {\r\n return (array && array.length)\r\n ? baseWhile(array, getIteratee(predicate, 3), true, true)\r\n : [];\r\n }\r\n\r\n /**\r\n * Creates a slice of `array` excluding elements dropped from the beginning.\r\n * Elements are dropped until `predicate` returns falsey. The predicate is\r\n * invoked with three arguments: (value, index, array).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Array\r\n * @param {Array} array The array to query.\r\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\r\n * @returns {Array} Returns the slice of `array`.\r\n * @example\r\n *\r\n * var users = [\r\n * { 'user': 'barney', 'active': false },\r\n * { 'user': 'fred', 'active': false },\r\n * { 'user': 'pebbles', 'active': true }\r\n * ];\r\n *\r\n * _.dropWhile(users, function(o) { return !o.active; });\r\n * // => objects for ['pebbles']\r\n *\r\n * // The `_.matches` iteratee shorthand.\r\n * _.dropWhile(users, { 'user': 'barney', 'active': false });\r\n * // => objects for ['fred', 'pebbles']\r\n *\r\n * // The `_.matchesProperty` iteratee shorthand.\r\n * _.dropWhile(users, ['active', false]);\r\n * // => objects for ['pebbles']\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.dropWhile(users, 'active');\r\n * // => objects for ['barney', 'fred', 'pebbles']\r\n */\r\n function dropWhile(array, predicate) {\r\n return (array && array.length)\r\n ? baseWhile(array, getIteratee(predicate, 3), true)\r\n : [];\r\n }\r\n\r\n /**\r\n * Fills elements of `array` with `value` from `start` up to, but not\r\n * including, `end`.\r\n *\r\n * **Note:** This method mutates `array`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.2.0\r\n * @category Array\r\n * @param {Array} array The array to fill.\r\n * @param {*} value The value to fill `array` with.\r\n * @param {number} [start=0] The start position.\r\n * @param {number} [end=array.length] The end position.\r\n * @returns {Array} Returns `array`.\r\n * @example\r\n *\r\n * var array = [1, 2, 3];\r\n *\r\n * _.fill(array, 'a');\r\n * console.log(array);\r\n * // => ['a', 'a', 'a']\r\n *\r\n * _.fill(Array(3), 2);\r\n * // => [2, 2, 2]\r\n *\r\n * _.fill([4, 6, 8, 10], '*', 1, 3);\r\n * // => [4, '*', '*', 10]\r\n */\r\n function fill(array, value, start, end) {\r\n var length = array == null ? 0 : array.length;\r\n if (!length) {\r\n return [];\r\n }\r\n if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {\r\n start = 0;\r\n end = length;\r\n }\r\n return baseFill(array, value, start, end);\r\n }\r\n\r\n /**\r\n * This method is like `_.find` except that it returns the index of the first\r\n * element `predicate` returns truthy for instead of the element itself.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 1.1.0\r\n * @category Array\r\n * @param {Array} array The array to inspect.\r\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\r\n * @param {number} [fromIndex=0] The index to search from.\r\n * @returns {number} Returns the index of the found element, else `-1`.\r\n * @example\r\n *\r\n * var users = [\r\n * { 'user': 'barney', 'active': false },\r\n * { 'user': 'fred', 'active': false },\r\n * { 'user': 'pebbles', 'active': true }\r\n * ];\r\n *\r\n * _.findIndex(users, function(o) { return o.user == 'barney'; });\r\n * // => 0\r\n *\r\n * // The `_.matches` iteratee shorthand.\r\n * _.findIndex(users, { 'user': 'fred', 'active': false });\r\n * // => 1\r\n *\r\n * // The `_.matchesProperty` iteratee shorthand.\r\n * _.findIndex(users, ['active', false]);\r\n * // => 0\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.findIndex(users, 'active');\r\n * // => 2\r\n */\r\n function findIndex(array, predicate, fromIndex) {\r\n var length = array == null ? 0 : array.length;\r\n if (!length) {\r\n return -1;\r\n }\r\n var index = fromIndex == null ? 0 : toInteger(fromIndex);\r\n if (index < 0) {\r\n index = nativeMax(length + index, 0);\r\n }\r\n return baseFindIndex(array, getIteratee(predicate, 3), index);\r\n }\r\n\r\n /**\r\n * This method is like `_.findIndex` except that it iterates over elements\r\n * of `collection` from right to left.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.0.0\r\n * @category Array\r\n * @param {Array} array The array to inspect.\r\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\r\n * @param {number} [fromIndex=array.length-1] The index to search from.\r\n * @returns {number} Returns the index of the found element, else `-1`.\r\n * @example\r\n *\r\n * var users = [\r\n * { 'user': 'barney', 'active': true },\r\n * { 'user': 'fred', 'active': false },\r\n * { 'user': 'pebbles', 'active': false }\r\n * ];\r\n *\r\n * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });\r\n * // => 2\r\n *\r\n * // The `_.matches` iteratee shorthand.\r\n * _.findLastIndex(users, { 'user': 'barney', 'active': true });\r\n * // => 0\r\n *\r\n * // The `_.matchesProperty` iteratee shorthand.\r\n * _.findLastIndex(users, ['active', false]);\r\n * // => 2\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.findLastIndex(users, 'active');\r\n * // => 0\r\n */\r\n function findLastIndex(array, predicate, fromIndex) {\r\n var length = array == null ? 0 : array.length;\r\n if (!length) {\r\n return -1;\r\n }\r\n var index = length - 1;\r\n if (fromIndex !== undefined) {\r\n index = toInteger(fromIndex);\r\n index = fromIndex < 0\r\n ? nativeMax(length + index, 0)\r\n : nativeMin(index, length - 1);\r\n }\r\n return baseFindIndex(array, getIteratee(predicate, 3), index, true);\r\n }\r\n\r\n /**\r\n * Flattens `array` a single level deep.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Array\r\n * @param {Array} array The array to flatten.\r\n * @returns {Array} Returns the new flattened array.\r\n * @example\r\n *\r\n * _.flatten([1, [2, [3, [4]], 5]]);\r\n * // => [1, 2, [3, [4]], 5]\r\n */\r\n function flatten(array) {\r\n var length = array == null ? 0 : array.length;\r\n return length ? baseFlatten(array, 1) : [];\r\n }\r\n\r\n /**\r\n * Recursively flattens `array`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Array\r\n * @param {Array} array The array to flatten.\r\n * @returns {Array} Returns the new flattened array.\r\n * @example\r\n *\r\n * _.flattenDeep([1, [2, [3, [4]], 5]]);\r\n * // => [1, 2, 3, 4, 5]\r\n */\r\n function flattenDeep(array) {\r\n var length = array == null ? 0 : array.length;\r\n return length ? baseFlatten(array, INFINITY) : [];\r\n }\r\n\r\n /**\r\n * Recursively flatten `array` up to `depth` times.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.4.0\r\n * @category Array\r\n * @param {Array} array The array to flatten.\r\n * @param {number} [depth=1] The maximum recursion depth.\r\n * @returns {Array} Returns the new flattened array.\r\n * @example\r\n *\r\n * var array = [1, [2, [3, [4]], 5]];\r\n *\r\n * _.flattenDepth(array, 1);\r\n * // => [1, 2, [3, [4]], 5]\r\n *\r\n * _.flattenDepth(array, 2);\r\n * // => [1, 2, 3, [4], 5]\r\n */\r\n function flattenDepth(array, depth) {\r\n var length = array == null ? 0 : array.length;\r\n if (!length) {\r\n return [];\r\n }\r\n depth = depth === undefined ? 1 : toInteger(depth);\r\n return baseFlatten(array, depth);\r\n }\r\n\r\n /**\r\n * The inverse of `_.toPairs`; this method returns an object composed\r\n * from key-value `pairs`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} pairs The key-value pairs.\r\n * @returns {Object} Returns the new object.\r\n * @example\r\n *\r\n * _.fromPairs([['a', 1], ['b', 2]]);\r\n * // => { 'a': 1, 'b': 2 }\r\n */\r\n function fromPairs(pairs) {\r\n var index = -1,\r\n length = pairs == null ? 0 : pairs.length,\r\n result = {};\r\n\r\n while (++index < length) {\r\n var pair = pairs[index];\r\n result[pair[0]] = pair[1];\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Gets the first element of `array`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @alias first\r\n * @category Array\r\n * @param {Array} array The array to query.\r\n * @returns {*} Returns the first element of `array`.\r\n * @example\r\n *\r\n * _.head([1, 2, 3]);\r\n * // => 1\r\n *\r\n * _.head([]);\r\n * // => undefined\r\n */\r\n function head(array) {\r\n return (array && array.length) ? array[0] : undefined;\r\n }\r\n\r\n /**\r\n * Gets the index at which the first occurrence of `value` is found in `array`\r\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\r\n * for equality comparisons. If `fromIndex` is negative, it's used as the\r\n * offset from the end of `array`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Array\r\n * @param {Array} array The array to inspect.\r\n * @param {*} value The value to search for.\r\n * @param {number} [fromIndex=0] The index to search from.\r\n * @returns {number} Returns the index of the matched value, else `-1`.\r\n * @example\r\n *\r\n * _.indexOf([1, 2, 1, 2], 2);\r\n * // => 1\r\n *\r\n * // Search from the `fromIndex`.\r\n * _.indexOf([1, 2, 1, 2], 2, 2);\r\n * // => 3\r\n */\r\n function indexOf(array, value, fromIndex) {\r\n var length = array == null ? 0 : array.length;\r\n if (!length) {\r\n return -1;\r\n }\r\n var index = fromIndex == null ? 0 : toInteger(fromIndex);\r\n if (index < 0) {\r\n index = nativeMax(length + index, 0);\r\n }\r\n return baseIndexOf(array, value, index);\r\n }\r\n\r\n /**\r\n * Gets all but the last element of `array`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Array\r\n * @param {Array} array The array to query.\r\n * @returns {Array} Returns the slice of `array`.\r\n * @example\r\n *\r\n * _.initial([1, 2, 3]);\r\n * // => [1, 2]\r\n */\r\n function initial(array) {\r\n var length = array == null ? 0 : array.length;\r\n return length ? baseSlice(array, 0, -1) : [];\r\n }\r\n\r\n /**\r\n * Creates an array of unique values that are included in all given arrays\r\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\r\n * for equality comparisons. The order and references of result values are\r\n * determined by the first array.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Array\r\n * @param {...Array} [arrays] The arrays to inspect.\r\n * @returns {Array} Returns the new array of intersecting values.\r\n * @example\r\n *\r\n * _.intersection([2, 1], [2, 3]);\r\n * // => [2]\r\n */\r\n var intersection = baseRest(function(arrays) {\r\n var mapped = arrayMap(arrays, castArrayLikeObject);\r\n return (mapped.length && mapped[0] === arrays[0])\r\n ? baseIntersection(mapped)\r\n : [];\r\n });\r\n\r\n /**\r\n * This method is like `_.intersection` except that it accepts `iteratee`\r\n * which is invoked for each element of each `arrays` to generate the criterion\r\n * by which they're compared. The order and references of result values are\r\n * determined by the first array. The iteratee is invoked with one argument:\r\n * (value).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {...Array} [arrays] The arrays to inspect.\r\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\r\n * @returns {Array} Returns the new array of intersecting values.\r\n * @example\r\n *\r\n * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);\r\n * // => [2.1]\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\r\n * // => [{ 'x': 1 }]\r\n */\r\n var intersectionBy = baseRest(function(arrays) {\r\n var iteratee = last(arrays),\r\n mapped = arrayMap(arrays, castArrayLikeObject);\r\n\r\n if (iteratee === last(mapped)) {\r\n iteratee = undefined;\r\n } else {\r\n mapped.pop();\r\n }\r\n return (mapped.length && mapped[0] === arrays[0])\r\n ? baseIntersection(mapped, getIteratee(iteratee, 2))\r\n : [];\r\n });\r\n\r\n /**\r\n * This method is like `_.intersection` except that it accepts `comparator`\r\n * which is invoked to compare elements of `arrays`. The order and references\r\n * of result values are determined by the first array. The comparator is\r\n * invoked with two arguments: (arrVal, othVal).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {...Array} [arrays] The arrays to inspect.\r\n * @param {Function} [comparator] The comparator invoked per element.\r\n * @returns {Array} Returns the new array of intersecting values.\r\n * @example\r\n *\r\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\r\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\r\n *\r\n * _.intersectionWith(objects, others, _.isEqual);\r\n * // => [{ 'x': 1, 'y': 2 }]\r\n */\r\n var intersectionWith = baseRest(function(arrays) {\r\n var comparator = last(arrays),\r\n mapped = arrayMap(arrays, castArrayLikeObject);\r\n\r\n comparator = typeof comparator == 'function' ? comparator : undefined;\r\n if (comparator) {\r\n mapped.pop();\r\n }\r\n return (mapped.length && mapped[0] === arrays[0])\r\n ? baseIntersection(mapped, undefined, comparator)\r\n : [];\r\n });\r\n\r\n /**\r\n * Converts all elements in `array` into a string separated by `separator`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} array The array to convert.\r\n * @param {string} [separator=','] The element separator.\r\n * @returns {string} Returns the joined string.\r\n * @example\r\n *\r\n * _.join(['a', 'b', 'c'], '~');\r\n * // => 'a~b~c'\r\n */\r\n function join(array, separator) {\r\n return array == null ? '' : nativeJoin.call(array, separator);\r\n }\r\n\r\n /**\r\n * Gets the last element of `array`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Array\r\n * @param {Array} array The array to query.\r\n * @returns {*} Returns the last element of `array`.\r\n * @example\r\n *\r\n * _.last([1, 2, 3]);\r\n * // => 3\r\n */\r\n function last(array) {\r\n var length = array == null ? 0 : array.length;\r\n return length ? array[length - 1] : undefined;\r\n }\r\n\r\n /**\r\n * This method is like `_.indexOf` except that it iterates over elements of\r\n * `array` from right to left.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Array\r\n * @param {Array} array The array to inspect.\r\n * @param {*} value The value to search for.\r\n * @param {number} [fromIndex=array.length-1] The index to search from.\r\n * @returns {number} Returns the index of the matched value, else `-1`.\r\n * @example\r\n *\r\n * _.lastIndexOf([1, 2, 1, 2], 2);\r\n * // => 3\r\n *\r\n * // Search from the `fromIndex`.\r\n * _.lastIndexOf([1, 2, 1, 2], 2, 2);\r\n * // => 1\r\n */\r\n function lastIndexOf(array, value, fromIndex) {\r\n var length = array == null ? 0 : array.length;\r\n if (!length) {\r\n return -1;\r\n }\r\n var index = length;\r\n if (fromIndex !== undefined) {\r\n index = toInteger(fromIndex);\r\n index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);\r\n }\r\n return value === value\r\n ? strictLastIndexOf(array, value, index)\r\n : baseFindIndex(array, baseIsNaN, index, true);\r\n }\r\n\r\n /**\r\n * Gets the element at index `n` of `array`. If `n` is negative, the nth\r\n * element from the end is returned.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.11.0\r\n * @category Array\r\n * @param {Array} array The array to query.\r\n * @param {number} [n=0] The index of the element to return.\r\n * @returns {*} Returns the nth element of `array`.\r\n * @example\r\n *\r\n * var array = ['a', 'b', 'c', 'd'];\r\n *\r\n * _.nth(array, 1);\r\n * // => 'b'\r\n *\r\n * _.nth(array, -2);\r\n * // => 'c';\r\n */\r\n function nth(array, n) {\r\n return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;\r\n }\r\n\r\n /**\r\n * Removes all given values from `array` using\r\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\r\n * for equality comparisons.\r\n *\r\n * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`\r\n * to remove elements from an array by predicate.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.0.0\r\n * @category Array\r\n * @param {Array} array The array to modify.\r\n * @param {...*} [values] The values to remove.\r\n * @returns {Array} Returns `array`.\r\n * @example\r\n *\r\n * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\r\n *\r\n * _.pull(array, 'a', 'c');\r\n * console.log(array);\r\n * // => ['b', 'b']\r\n */\r\n var pull = baseRest(pullAll);\r\n\r\n /**\r\n * This method is like `_.pull` except that it accepts an array of values to remove.\r\n *\r\n * **Note:** Unlike `_.difference`, this method mutates `array`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} array The array to modify.\r\n * @param {Array} values The values to remove.\r\n * @returns {Array} Returns `array`.\r\n * @example\r\n *\r\n * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\r\n *\r\n * _.pullAll(array, ['a', 'c']);\r\n * console.log(array);\r\n * // => ['b', 'b']\r\n */\r\n function pullAll(array, values) {\r\n return (array && array.length && values && values.length)\r\n ? basePullAll(array, values)\r\n : array;\r\n }\r\n\r\n /**\r\n * This method is like `_.pullAll` except that it accepts `iteratee` which is\r\n * invoked for each element of `array` and `values` to generate the criterion\r\n * by which they're compared. The iteratee is invoked with one argument: (value).\r\n *\r\n * **Note:** Unlike `_.differenceBy`, this method mutates `array`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} array The array to modify.\r\n * @param {Array} values The values to remove.\r\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\r\n * @returns {Array} Returns `array`.\r\n * @example\r\n *\r\n * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];\r\n *\r\n * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');\r\n * console.log(array);\r\n * // => [{ 'x': 2 }]\r\n */\r\n function pullAllBy(array, values, iteratee) {\r\n return (array && array.length && values && values.length)\r\n ? basePullAll(array, values, getIteratee(iteratee, 2))\r\n : array;\r\n }\r\n\r\n /**\r\n * This method is like `_.pullAll` except that it accepts `comparator` which\r\n * is invoked to compare elements of `array` to `values`. The comparator is\r\n * invoked with two arguments: (arrVal, othVal).\r\n *\r\n * **Note:** Unlike `_.differenceWith`, this method mutates `array`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.6.0\r\n * @category Array\r\n * @param {Array} array The array to modify.\r\n * @param {Array} values The values to remove.\r\n * @param {Function} [comparator] The comparator invoked per element.\r\n * @returns {Array} Returns `array`.\r\n * @example\r\n *\r\n * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];\r\n *\r\n * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);\r\n * console.log(array);\r\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]\r\n */\r\n function pullAllWith(array, values, comparator) {\r\n return (array && array.length && values && values.length)\r\n ? basePullAll(array, values, undefined, comparator)\r\n : array;\r\n }\r\n\r\n /**\r\n * Removes elements from `array` corresponding to `indexes` and returns an\r\n * array of removed elements.\r\n *\r\n * **Note:** Unlike `_.at`, this method mutates `array`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Array\r\n * @param {Array} array The array to modify.\r\n * @param {...(number|number[])} [indexes] The indexes of elements to remove.\r\n * @returns {Array} Returns the new array of removed elements.\r\n * @example\r\n *\r\n * var array = ['a', 'b', 'c', 'd'];\r\n * var pulled = _.pullAt(array, [1, 3]);\r\n *\r\n * console.log(array);\r\n * // => ['a', 'c']\r\n *\r\n * console.log(pulled);\r\n * // => ['b', 'd']\r\n */\r\n var pullAt = flatRest(function(array, indexes) {\r\n var length = array == null ? 0 : array.length,\r\n result = baseAt(array, indexes);\r\n\r\n basePullAt(array, arrayMap(indexes, function(index) {\r\n return isIndex(index, length) ? +index : index;\r\n }).sort(compareAscending));\r\n\r\n return result;\r\n });\r\n\r\n /**\r\n * Removes all elements from `array` that `predicate` returns truthy for\r\n * and returns an array of the removed elements. The predicate is invoked\r\n * with three arguments: (value, index, array).\r\n *\r\n * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`\r\n * to pull elements from an array by value.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.0.0\r\n * @category Array\r\n * @param {Array} array The array to modify.\r\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\r\n * @returns {Array} Returns the new array of removed elements.\r\n * @example\r\n *\r\n * var array = [1, 2, 3, 4];\r\n * var evens = _.remove(array, function(n) {\r\n * return n % 2 == 0;\r\n * });\r\n *\r\n * console.log(array);\r\n * // => [1, 3]\r\n *\r\n * console.log(evens);\r\n * // => [2, 4]\r\n */\r\n function remove(array, predicate) {\r\n var result = [];\r\n if (!(array && array.length)) {\r\n return result;\r\n }\r\n var index = -1,\r\n indexes = [],\r\n length = array.length;\r\n\r\n predicate = getIteratee(predicate, 3);\r\n while (++index < length) {\r\n var value = array[index];\r\n if (predicate(value, index, array)) {\r\n result.push(value);\r\n indexes.push(index);\r\n }\r\n }\r\n basePullAt(array, indexes);\r\n return result;\r\n }\r\n\r\n /**\r\n * Reverses `array` so that the first element becomes the last, the second\r\n * element becomes the second to last, and so on.\r\n *\r\n * **Note:** This method mutates `array` and is based on\r\n * [`Array#reverse`](https://mdn.io/Array/reverse).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} array The array to modify.\r\n * @returns {Array} Returns `array`.\r\n * @example\r\n *\r\n * var array = [1, 2, 3];\r\n *\r\n * _.reverse(array);\r\n * // => [3, 2, 1]\r\n *\r\n * console.log(array);\r\n * // => [3, 2, 1]\r\n */\r\n function reverse(array) {\r\n return array == null ? array : nativeReverse.call(array);\r\n }\r\n\r\n /**\r\n * Creates a slice of `array` from `start` up to, but not including, `end`.\r\n *\r\n * **Note:** This method is used instead of\r\n * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are\r\n * returned.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Array\r\n * @param {Array} array The array to slice.\r\n * @param {number} [start=0] The start position.\r\n * @param {number} [end=array.length] The end position.\r\n * @returns {Array} Returns the slice of `array`.\r\n */\r\n function slice(array, start, end) {\r\n var length = array == null ? 0 : array.length;\r\n if (!length) {\r\n return [];\r\n }\r\n if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {\r\n start = 0;\r\n end = length;\r\n }\r\n else {\r\n start = start == null ? 0 : toInteger(start);\r\n end = end === undefined ? length : toInteger(end);\r\n }\r\n return baseSlice(array, start, end);\r\n }\r\n\r\n /**\r\n * Uses a binary search to determine the lowest index at which `value`\r\n * should be inserted into `array` in order to maintain its sort order.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Array\r\n * @param {Array} array The sorted array to inspect.\r\n * @param {*} value The value to evaluate.\r\n * @returns {number} Returns the index at which `value` should be inserted\r\n * into `array`.\r\n * @example\r\n *\r\n * _.sortedIndex([30, 50], 40);\r\n * // => 1\r\n */\r\n function sortedIndex(array, value) {\r\n return baseSortedIndex(array, value);\r\n }\r\n\r\n /**\r\n * This method is like `_.sortedIndex` except that it accepts `iteratee`\r\n * which is invoked for `value` and each element of `array` to compute their\r\n * sort ranking. The iteratee is invoked with one argument: (value).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} array The sorted array to inspect.\r\n * @param {*} value The value to evaluate.\r\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\r\n * @returns {number} Returns the index at which `value` should be inserted\r\n * into `array`.\r\n * @example\r\n *\r\n * var objects = [{ 'x': 4 }, { 'x': 5 }];\r\n *\r\n * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\r\n * // => 0\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.sortedIndexBy(objects, { 'x': 4 }, 'x');\r\n * // => 0\r\n */\r\n function sortedIndexBy(array, value, iteratee) {\r\n return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));\r\n }\r\n\r\n /**\r\n * This method is like `_.indexOf` except that it performs a binary\r\n * search on a sorted `array`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} array The array to inspect.\r\n * @param {*} value The value to search for.\r\n * @returns {number} Returns the index of the matched value, else `-1`.\r\n * @example\r\n *\r\n * _.sortedIndexOf([4, 5, 5, 5, 6], 5);\r\n * // => 1\r\n */\r\n function sortedIndexOf(array, value) {\r\n var length = array == null ? 0 : array.length;\r\n if (length) {\r\n var index = baseSortedIndex(array, value);\r\n if (index < length && eq(array[index], value)) {\r\n return index;\r\n }\r\n }\r\n return -1;\r\n }\r\n\r\n /**\r\n * This method is like `_.sortedIndex` except that it returns the highest\r\n * index at which `value` should be inserted into `array` in order to\r\n * maintain its sort order.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Array\r\n * @param {Array} array The sorted array to inspect.\r\n * @param {*} value The value to evaluate.\r\n * @returns {number} Returns the index at which `value` should be inserted\r\n * into `array`.\r\n * @example\r\n *\r\n * _.sortedLastIndex([4, 5, 5, 5, 6], 5);\r\n * // => 4\r\n */\r\n function sortedLastIndex(array, value) {\r\n return baseSortedIndex(array, value, true);\r\n }\r\n\r\n /**\r\n * This method is like `_.sortedLastIndex` except that it accepts `iteratee`\r\n * which is invoked for `value` and each element of `array` to compute their\r\n * sort ranking. The iteratee is invoked with one argument: (value).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} array The sorted array to inspect.\r\n * @param {*} value The value to evaluate.\r\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\r\n * @returns {number} Returns the index at which `value` should be inserted\r\n * into `array`.\r\n * @example\r\n *\r\n * var objects = [{ 'x': 4 }, { 'x': 5 }];\r\n *\r\n * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\r\n * // => 1\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');\r\n * // => 1\r\n */\r\n function sortedLastIndexBy(array, value, iteratee) {\r\n return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);\r\n }\r\n\r\n /**\r\n * This method is like `_.lastIndexOf` except that it performs a binary\r\n * search on a sorted `array`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} array The array to inspect.\r\n * @param {*} value The value to search for.\r\n * @returns {number} Returns the index of the matched value, else `-1`.\r\n * @example\r\n *\r\n * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);\r\n * // => 3\r\n */\r\n function sortedLastIndexOf(array, value) {\r\n var length = array == null ? 0 : array.length;\r\n if (length) {\r\n var index = baseSortedIndex(array, value, true) - 1;\r\n if (eq(array[index], value)) {\r\n return index;\r\n }\r\n }\r\n return -1;\r\n }\r\n\r\n /**\r\n * This method is like `_.uniq` except that it's designed and optimized\r\n * for sorted arrays.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} array The array to inspect.\r\n * @returns {Array} Returns the new duplicate free array.\r\n * @example\r\n *\r\n * _.sortedUniq([1, 1, 2]);\r\n * // => [1, 2]\r\n */\r\n function sortedUniq(array) {\r\n return (array && array.length)\r\n ? baseSortedUniq(array)\r\n : [];\r\n }\r\n\r\n /**\r\n * This method is like `_.uniqBy` except that it's designed and optimized\r\n * for sorted arrays.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} array The array to inspect.\r\n * @param {Function} [iteratee] The iteratee invoked per element.\r\n * @returns {Array} Returns the new duplicate free array.\r\n * @example\r\n *\r\n * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);\r\n * // => [1.1, 2.3]\r\n */\r\n function sortedUniqBy(array, iteratee) {\r\n return (array && array.length)\r\n ? baseSortedUniq(array, getIteratee(iteratee, 2))\r\n : [];\r\n }\r\n\r\n /**\r\n * Gets all but the first element of `array`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} array The array to query.\r\n * @returns {Array} Returns the slice of `array`.\r\n * @example\r\n *\r\n * _.tail([1, 2, 3]);\r\n * // => [2, 3]\r\n */\r\n function tail(array) {\r\n var length = array == null ? 0 : array.length;\r\n return length ? baseSlice(array, 1, length) : [];\r\n }\r\n\r\n /**\r\n * Creates a slice of `array` with `n` elements taken from the beginning.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Array\r\n * @param {Array} array The array to query.\r\n * @param {number} [n=1] The number of elements to take.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {Array} Returns the slice of `array`.\r\n * @example\r\n *\r\n * _.take([1, 2, 3]);\r\n * // => [1]\r\n *\r\n * _.take([1, 2, 3], 2);\r\n * // => [1, 2]\r\n *\r\n * _.take([1, 2, 3], 5);\r\n * // => [1, 2, 3]\r\n *\r\n * _.take([1, 2, 3], 0);\r\n * // => []\r\n */\r\n function take(array, n, guard) {\r\n if (!(array && array.length)) {\r\n return [];\r\n }\r\n n = (guard || n === undefined) ? 1 : toInteger(n);\r\n return baseSlice(array, 0, n < 0 ? 0 : n);\r\n }\r\n\r\n /**\r\n * Creates a slice of `array` with `n` elements taken from the end.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Array\r\n * @param {Array} array The array to query.\r\n * @param {number} [n=1] The number of elements to take.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {Array} Returns the slice of `array`.\r\n * @example\r\n *\r\n * _.takeRight([1, 2, 3]);\r\n * // => [3]\r\n *\r\n * _.takeRight([1, 2, 3], 2);\r\n * // => [2, 3]\r\n *\r\n * _.takeRight([1, 2, 3], 5);\r\n * // => [1, 2, 3]\r\n *\r\n * _.takeRight([1, 2, 3], 0);\r\n * // => []\r\n */\r\n function takeRight(array, n, guard) {\r\n var length = array == null ? 0 : array.length;\r\n if (!length) {\r\n return [];\r\n }\r\n n = (guard || n === undefined) ? 1 : toInteger(n);\r\n n = length - n;\r\n return baseSlice(array, n < 0 ? 0 : n, length);\r\n }\r\n\r\n /**\r\n * Creates a slice of `array` with elements taken from the end. Elements are\r\n * taken until `predicate` returns falsey. The predicate is invoked with\r\n * three arguments: (value, index, array).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Array\r\n * @param {Array} array The array to query.\r\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\r\n * @returns {Array} Returns the slice of `array`.\r\n * @example\r\n *\r\n * var users = [\r\n * { 'user': 'barney', 'active': true },\r\n * { 'user': 'fred', 'active': false },\r\n * { 'user': 'pebbles', 'active': false }\r\n * ];\r\n *\r\n * _.takeRightWhile(users, function(o) { return !o.active; });\r\n * // => objects for ['fred', 'pebbles']\r\n *\r\n * // The `_.matches` iteratee shorthand.\r\n * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });\r\n * // => objects for ['pebbles']\r\n *\r\n * // The `_.matchesProperty` iteratee shorthand.\r\n * _.takeRightWhile(users, ['active', false]);\r\n * // => objects for ['fred', 'pebbles']\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.takeRightWhile(users, 'active');\r\n * // => []\r\n */\r\n function takeRightWhile(array, predicate) {\r\n return (array && array.length)\r\n ? baseWhile(array, getIteratee(predicate, 3), false, true)\r\n : [];\r\n }\r\n\r\n /**\r\n * Creates a slice of `array` with elements taken from the beginning. Elements\r\n * are taken until `predicate` returns falsey. The predicate is invoked with\r\n * three arguments: (value, index, array).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Array\r\n * @param {Array} array The array to query.\r\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\r\n * @returns {Array} Returns the slice of `array`.\r\n * @example\r\n *\r\n * var users = [\r\n * { 'user': 'barney', 'active': false },\r\n * { 'user': 'fred', 'active': false },\r\n * { 'user': 'pebbles', 'active': true }\r\n * ];\r\n *\r\n * _.takeWhile(users, function(o) { return !o.active; });\r\n * // => objects for ['barney', 'fred']\r\n *\r\n * // The `_.matches` iteratee shorthand.\r\n * _.takeWhile(users, { 'user': 'barney', 'active': false });\r\n * // => objects for ['barney']\r\n *\r\n * // The `_.matchesProperty` iteratee shorthand.\r\n * _.takeWhile(users, ['active', false]);\r\n * // => objects for ['barney', 'fred']\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.takeWhile(users, 'active');\r\n * // => []\r\n */\r\n function takeWhile(array, predicate) {\r\n return (array && array.length)\r\n ? baseWhile(array, getIteratee(predicate, 3))\r\n : [];\r\n }\r\n\r\n /**\r\n * Creates an array of unique values, in order, from all given arrays using\r\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\r\n * for equality comparisons.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Array\r\n * @param {...Array} [arrays] The arrays to inspect.\r\n * @returns {Array} Returns the new array of combined values.\r\n * @example\r\n *\r\n * _.union([2], [1, 2]);\r\n * // => [2, 1]\r\n */\r\n var union = baseRest(function(arrays) {\r\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));\r\n });\r\n\r\n /**\r\n * This method is like `_.union` except that it accepts `iteratee` which is\r\n * invoked for each element of each `arrays` to generate the criterion by\r\n * which uniqueness is computed. Result values are chosen from the first\r\n * array in which the value occurs. The iteratee is invoked with one argument:\r\n * (value).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {...Array} [arrays] The arrays to inspect.\r\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\r\n * @returns {Array} Returns the new array of combined values.\r\n * @example\r\n *\r\n * _.unionBy([2.1], [1.2, 2.3], Math.floor);\r\n * // => [2.1, 1.2]\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\r\n * // => [{ 'x': 1 }, { 'x': 2 }]\r\n */\r\n var unionBy = baseRest(function(arrays) {\r\n var iteratee = last(arrays);\r\n if (isArrayLikeObject(iteratee)) {\r\n iteratee = undefined;\r\n }\r\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));\r\n });\r\n\r\n /**\r\n * This method is like `_.union` except that it accepts `comparator` which\r\n * is invoked to compare elements of `arrays`. Result values are chosen from\r\n * the first array in which the value occurs. The comparator is invoked\r\n * with two arguments: (arrVal, othVal).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {...Array} [arrays] The arrays to inspect.\r\n * @param {Function} [comparator] The comparator invoked per element.\r\n * @returns {Array} Returns the new array of combined values.\r\n * @example\r\n *\r\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\r\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\r\n *\r\n * _.unionWith(objects, others, _.isEqual);\r\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\r\n */\r\n var unionWith = baseRest(function(arrays) {\r\n var comparator = last(arrays);\r\n comparator = typeof comparator == 'function' ? comparator : undefined;\r\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);\r\n });\r\n\r\n /**\r\n * Creates a duplicate-free version of an array, using\r\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\r\n * for equality comparisons, in which only the first occurrence of each element\r\n * is kept. The order of result values is determined by the order they occur\r\n * in the array.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Array\r\n * @param {Array} array The array to inspect.\r\n * @returns {Array} Returns the new duplicate free array.\r\n * @example\r\n *\r\n * _.uniq([2, 1, 2]);\r\n * // => [2, 1]\r\n */\r\n function uniq(array) {\r\n return (array && array.length) ? baseUniq(array) : [];\r\n }\r\n\r\n /**\r\n * This method is like `_.uniq` except that it accepts `iteratee` which is\r\n * invoked for each element in `array` to generate the criterion by which\r\n * uniqueness is computed. The order of result values is determined by the\r\n * order they occur in the array. The iteratee is invoked with one argument:\r\n * (value).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} array The array to inspect.\r\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\r\n * @returns {Array} Returns the new duplicate free array.\r\n * @example\r\n *\r\n * _.uniqBy([2.1, 1.2, 2.3], Math.floor);\r\n * // => [2.1, 1.2]\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');\r\n * // => [{ 'x': 1 }, { 'x': 2 }]\r\n */\r\n function uniqBy(array, iteratee) {\r\n return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];\r\n }\r\n\r\n /**\r\n * This method is like `_.uniq` except that it accepts `comparator` which\r\n * is invoked to compare elements of `array`. The order of result values is\r\n * determined by the order they occur in the array.The comparator is invoked\r\n * with two arguments: (arrVal, othVal).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {Array} array The array to inspect.\r\n * @param {Function} [comparator] The comparator invoked per element.\r\n * @returns {Array} Returns the new duplicate free array.\r\n * @example\r\n *\r\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];\r\n *\r\n * _.uniqWith(objects, _.isEqual);\r\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]\r\n */\r\n function uniqWith(array, comparator) {\r\n comparator = typeof comparator == 'function' ? comparator : undefined;\r\n return (array && array.length) ? baseUniq(array, undefined, comparator) : [];\r\n }\r\n\r\n /**\r\n * This method is like `_.zip` except that it accepts an array of grouped\r\n * elements and creates an array regrouping the elements to their pre-zip\r\n * configuration.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 1.2.0\r\n * @category Array\r\n * @param {Array} array The array of grouped elements to process.\r\n * @returns {Array} Returns the new array of regrouped elements.\r\n * @example\r\n *\r\n * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);\r\n * // => [['a', 1, true], ['b', 2, false]]\r\n *\r\n * _.unzip(zipped);\r\n * // => [['a', 'b'], [1, 2], [true, false]]\r\n */\r\n function unzip(array) {\r\n if (!(array && array.length)) {\r\n return [];\r\n }\r\n var length = 0;\r\n array = arrayFilter(array, function(group) {\r\n if (isArrayLikeObject(group)) {\r\n length = nativeMax(group.length, length);\r\n return true;\r\n }\r\n });\r\n return baseTimes(length, function(index) {\r\n return arrayMap(array, baseProperty(index));\r\n });\r\n }\r\n\r\n /**\r\n * This method is like `_.unzip` except that it accepts `iteratee` to specify\r\n * how regrouped values should be combined. The iteratee is invoked with the\r\n * elements of each group: (...group).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.8.0\r\n * @category Array\r\n * @param {Array} array The array of grouped elements to process.\r\n * @param {Function} [iteratee=_.identity] The function to combine\r\n * regrouped values.\r\n * @returns {Array} Returns the new array of regrouped elements.\r\n * @example\r\n *\r\n * var zipped = _.zip([1, 2], [10, 20], [100, 200]);\r\n * // => [[1, 10, 100], [2, 20, 200]]\r\n *\r\n * _.unzipWith(zipped, _.add);\r\n * // => [3, 30, 300]\r\n */\r\n function unzipWith(array, iteratee) {\r\n if (!(array && array.length)) {\r\n return [];\r\n }\r\n var result = unzip(array);\r\n if (iteratee == null) {\r\n return result;\r\n }\r\n return arrayMap(result, function(group) {\r\n return apply(iteratee, undefined, group);\r\n });\r\n }\r\n\r\n /**\r\n * Creates an array excluding all given values using\r\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\r\n * for equality comparisons.\r\n *\r\n * **Note:** Unlike `_.pull`, this method returns a new array.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Array\r\n * @param {Array} array The array to inspect.\r\n * @param {...*} [values] The values to exclude.\r\n * @returns {Array} Returns the new array of filtered values.\r\n * @see _.difference, _.xor\r\n * @example\r\n *\r\n * _.without([2, 1, 2, 3], 1, 2);\r\n * // => [3]\r\n */\r\n var without = baseRest(function(array, values) {\r\n return isArrayLikeObject(array)\r\n ? baseDifference(array, values)\r\n : [];\r\n });\r\n\r\n /**\r\n * Creates an array of unique values that is the\r\n * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)\r\n * of the given arrays. The order of result values is determined by the order\r\n * they occur in the arrays.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.4.0\r\n * @category Array\r\n * @param {...Array} [arrays] The arrays to inspect.\r\n * @returns {Array} Returns the new array of filtered values.\r\n * @see _.difference, _.without\r\n * @example\r\n *\r\n * _.xor([2, 1], [2, 3]);\r\n * // => [1, 3]\r\n */\r\n var xor = baseRest(function(arrays) {\r\n return baseXor(arrayFilter(arrays, isArrayLikeObject));\r\n });\r\n\r\n /**\r\n * This method is like `_.xor` except that it accepts `iteratee` which is\r\n * invoked for each element of each `arrays` to generate the criterion by\r\n * which by which they're compared. The order of result values is determined\r\n * by the order they occur in the arrays. The iteratee is invoked with one\r\n * argument: (value).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {...Array} [arrays] The arrays to inspect.\r\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\r\n * @returns {Array} Returns the new array of filtered values.\r\n * @example\r\n *\r\n * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);\r\n * // => [1.2, 3.4]\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\r\n * // => [{ 'x': 2 }]\r\n */\r\n var xorBy = baseRest(function(arrays) {\r\n var iteratee = last(arrays);\r\n if (isArrayLikeObject(iteratee)) {\r\n iteratee = undefined;\r\n }\r\n return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));\r\n });\r\n\r\n /**\r\n * This method is like `_.xor` except that it accepts `comparator` which is\r\n * invoked to compare elements of `arrays`. The order of result values is\r\n * determined by the order they occur in the arrays. The comparator is invoked\r\n * with two arguments: (arrVal, othVal).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Array\r\n * @param {...Array} [arrays] The arrays to inspect.\r\n * @param {Function} [comparator] The comparator invoked per element.\r\n * @returns {Array} Returns the new array of filtered values.\r\n * @example\r\n *\r\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\r\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\r\n *\r\n * _.xorWith(objects, others, _.isEqual);\r\n * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\r\n */\r\n var xorWith = baseRest(function(arrays) {\r\n var comparator = last(arrays);\r\n comparator = typeof comparator == 'function' ? comparator : undefined;\r\n return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);\r\n });\r\n\r\n /**\r\n * Creates an array of grouped elements, the first of which contains the\r\n * first elements of the given arrays, the second of which contains the\r\n * second elements of the given arrays, and so on.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Array\r\n * @param {...Array} [arrays] The arrays to process.\r\n * @returns {Array} Returns the new array of grouped elements.\r\n * @example\r\n *\r\n * _.zip(['a', 'b'], [1, 2], [true, false]);\r\n * // => [['a', 1, true], ['b', 2, false]]\r\n */\r\n var zip = baseRest(unzip);\r\n\r\n /**\r\n * This method is like `_.fromPairs` except that it accepts two arrays,\r\n * one of property identifiers and one of corresponding values.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.4.0\r\n * @category Array\r\n * @param {Array} [props=[]] The property identifiers.\r\n * @param {Array} [values=[]] The property values.\r\n * @returns {Object} Returns the new object.\r\n * @example\r\n *\r\n * _.zipObject(['a', 'b'], [1, 2]);\r\n * // => { 'a': 1, 'b': 2 }\r\n */\r\n function zipObject(props, values) {\r\n return baseZipObject(props || [], values || [], assignValue);\r\n }\r\n\r\n /**\r\n * This method is like `_.zipObject` except that it supports property paths.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.1.0\r\n * @category Array\r\n * @param {Array} [props=[]] The property identifiers.\r\n * @param {Array} [values=[]] The property values.\r\n * @returns {Object} Returns the new object.\r\n * @example\r\n *\r\n * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);\r\n * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }\r\n */\r\n function zipObjectDeep(props, values) {\r\n return baseZipObject(props || [], values || [], baseSet);\r\n }\r\n\r\n /**\r\n * This method is like `_.zip` except that it accepts `iteratee` to specify\r\n * how grouped values should be combined. The iteratee is invoked with the\r\n * elements of each group: (...group).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.8.0\r\n * @category Array\r\n * @param {...Array} [arrays] The arrays to process.\r\n * @param {Function} [iteratee=_.identity] The function to combine\r\n * grouped values.\r\n * @returns {Array} Returns the new array of grouped elements.\r\n * @example\r\n *\r\n * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {\r\n * return a + b + c;\r\n * });\r\n * // => [111, 222]\r\n */\r\n var zipWith = baseRest(function(arrays) {\r\n var length = arrays.length,\r\n iteratee = length > 1 ? arrays[length - 1] : undefined;\r\n\r\n iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;\r\n return unzipWith(arrays, iteratee);\r\n });\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Creates a `lodash` wrapper instance that wraps `value` with explicit method\r\n * chain sequences enabled. The result of such sequences must be unwrapped\r\n * with `_#value`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 1.3.0\r\n * @category Seq\r\n * @param {*} value The value to wrap.\r\n * @returns {Object} Returns the new `lodash` wrapper instance.\r\n * @example\r\n *\r\n * var users = [\r\n * { 'user': 'barney', 'age': 36 },\r\n * { 'user': 'fred', 'age': 40 },\r\n * { 'user': 'pebbles', 'age': 1 }\r\n * ];\r\n *\r\n * var youngest = _\r\n * .chain(users)\r\n * .sortBy('age')\r\n * .map(function(o) {\r\n * return o.user + ' is ' + o.age;\r\n * })\r\n * .head()\r\n * .value();\r\n * // => 'pebbles is 1'\r\n */\r\n function chain(value) {\r\n var result = lodash(value);\r\n result.__chain__ = true;\r\n return result;\r\n }\r\n\r\n /**\r\n * This method invokes `interceptor` and returns `value`. The interceptor\r\n * is invoked with one argument; (value). The purpose of this method is to\r\n * \"tap into\" a method chain sequence in order to modify intermediate results.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Seq\r\n * @param {*} value The value to provide to `interceptor`.\r\n * @param {Function} interceptor The function to invoke.\r\n * @returns {*} Returns `value`.\r\n * @example\r\n *\r\n * _([1, 2, 3])\r\n * .tap(function(array) {\r\n * // Mutate input array.\r\n * array.pop();\r\n * })\r\n * .reverse()\r\n * .value();\r\n * // => [2, 1]\r\n */\r\n function tap(value, interceptor) {\r\n interceptor(value);\r\n return value;\r\n }\r\n\r\n /**\r\n * This method is like `_.tap` except that it returns the result of `interceptor`.\r\n * The purpose of this method is to \"pass thru\" values replacing intermediate\r\n * results in a method chain sequence.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Seq\r\n * @param {*} value The value to provide to `interceptor`.\r\n * @param {Function} interceptor The function to invoke.\r\n * @returns {*} Returns the result of `interceptor`.\r\n * @example\r\n *\r\n * _(' abc ')\r\n * .chain()\r\n * .trim()\r\n * .thru(function(value) {\r\n * return [value];\r\n * })\r\n * .value();\r\n * // => ['abc']\r\n */\r\n function thru(value, interceptor) {\r\n return interceptor(value);\r\n }\r\n\r\n /**\r\n * This method is the wrapper version of `_.at`.\r\n *\r\n * @name at\r\n * @memberOf _\r\n * @since 1.0.0\r\n * @category Seq\r\n * @param {...(string|string[])} [paths] The property paths to pick.\r\n * @returns {Object} Returns the new `lodash` wrapper instance.\r\n * @example\r\n *\r\n * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\r\n *\r\n * _(object).at(['a[0].b.c', 'a[1]']).value();\r\n * // => [3, 4]\r\n */\r\n var wrapperAt = flatRest(function(paths) {\r\n var length = paths.length,\r\n start = length ? paths[0] : 0,\r\n value = this.__wrapped__,\r\n interceptor = function(object) { return baseAt(object, paths); };\r\n\r\n if (length > 1 || this.__actions__.length ||\r\n !(value instanceof LazyWrapper) || !isIndex(start)) {\r\n return this.thru(interceptor);\r\n }\r\n value = value.slice(start, +start + (length ? 1 : 0));\r\n value.__actions__.push({\r\n 'func': thru,\r\n 'args': [interceptor],\r\n 'thisArg': undefined\r\n });\r\n return new LodashWrapper(value, this.__chain__).thru(function(array) {\r\n if (length && !array.length) {\r\n array.push(undefined);\r\n }\r\n return array;\r\n });\r\n });\r\n\r\n /**\r\n * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.\r\n *\r\n * @name chain\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Seq\r\n * @returns {Object} Returns the new `lodash` wrapper instance.\r\n * @example\r\n *\r\n * var users = [\r\n * { 'user': 'barney', 'age': 36 },\r\n * { 'user': 'fred', 'age': 40 }\r\n * ];\r\n *\r\n * // A sequence without explicit chaining.\r\n * _(users).head();\r\n * // => { 'user': 'barney', 'age': 36 }\r\n *\r\n * // A sequence with explicit chaining.\r\n * _(users)\r\n * .chain()\r\n * .head()\r\n * .pick('user')\r\n * .value();\r\n * // => { 'user': 'barney' }\r\n */\r\n function wrapperChain() {\r\n return chain(this);\r\n }\r\n\r\n /**\r\n * Executes the chain sequence and returns the wrapped result.\r\n *\r\n * @name commit\r\n * @memberOf _\r\n * @since 3.2.0\r\n * @category Seq\r\n * @returns {Object} Returns the new `lodash` wrapper instance.\r\n * @example\r\n *\r\n * var array = [1, 2];\r\n * var wrapped = _(array).push(3);\r\n *\r\n * console.log(array);\r\n * // => [1, 2]\r\n *\r\n * wrapped = wrapped.commit();\r\n * console.log(array);\r\n * // => [1, 2, 3]\r\n *\r\n * wrapped.last();\r\n * // => 3\r\n *\r\n * console.log(array);\r\n * // => [1, 2, 3]\r\n */\r\n function wrapperCommit() {\r\n return new LodashWrapper(this.value(), this.__chain__);\r\n }\r\n\r\n /**\r\n * Gets the next value on a wrapped object following the\r\n * [iterator protocol](https://mdn.io/iteration_protocols#iterator).\r\n *\r\n * @name next\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Seq\r\n * @returns {Object} Returns the next iterator value.\r\n * @example\r\n *\r\n * var wrapped = _([1, 2]);\r\n *\r\n * wrapped.next();\r\n * // => { 'done': false, 'value': 1 }\r\n *\r\n * wrapped.next();\r\n * // => { 'done': false, 'value': 2 }\r\n *\r\n * wrapped.next();\r\n * // => { 'done': true, 'value': undefined }\r\n */\r\n function wrapperNext() {\r\n if (this.__values__ === undefined) {\r\n this.__values__ = toArray(this.value());\r\n }\r\n var done = this.__index__ >= this.__values__.length,\r\n value = done ? undefined : this.__values__[this.__index__++];\r\n\r\n return { 'done': done, 'value': value };\r\n }\r\n\r\n /**\r\n * Enables the wrapper to be iterable.\r\n *\r\n * @name Symbol.iterator\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Seq\r\n * @returns {Object} Returns the wrapper object.\r\n * @example\r\n *\r\n * var wrapped = _([1, 2]);\r\n *\r\n * wrapped[Symbol.iterator]() === wrapped;\r\n * // => true\r\n *\r\n * Array.from(wrapped);\r\n * // => [1, 2]\r\n */\r\n function wrapperToIterator() {\r\n return this;\r\n }\r\n\r\n /**\r\n * Creates a clone of the chain sequence planting `value` as the wrapped value.\r\n *\r\n * @name plant\r\n * @memberOf _\r\n * @since 3.2.0\r\n * @category Seq\r\n * @param {*} value The value to plant.\r\n * @returns {Object} Returns the new `lodash` wrapper instance.\r\n * @example\r\n *\r\n * function square(n) {\r\n * return n * n;\r\n * }\r\n *\r\n * var wrapped = _([1, 2]).map(square);\r\n * var other = wrapped.plant([3, 4]);\r\n *\r\n * other.value();\r\n * // => [9, 16]\r\n *\r\n * wrapped.value();\r\n * // => [1, 4]\r\n */\r\n function wrapperPlant(value) {\r\n var result,\r\n parent = this;\r\n\r\n while (parent instanceof baseLodash) {\r\n var clone = wrapperClone(parent);\r\n clone.__index__ = 0;\r\n clone.__values__ = undefined;\r\n if (result) {\r\n previous.__wrapped__ = clone;\r\n } else {\r\n result = clone;\r\n }\r\n var previous = clone;\r\n parent = parent.__wrapped__;\r\n }\r\n previous.__wrapped__ = value;\r\n return result;\r\n }\r\n\r\n /**\r\n * This method is the wrapper version of `_.reverse`.\r\n *\r\n * **Note:** This method mutates the wrapped array.\r\n *\r\n * @name reverse\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Seq\r\n * @returns {Object} Returns the new `lodash` wrapper instance.\r\n * @example\r\n *\r\n * var array = [1, 2, 3];\r\n *\r\n * _(array).reverse().value()\r\n * // => [3, 2, 1]\r\n *\r\n * console.log(array);\r\n * // => [3, 2, 1]\r\n */\r\n function wrapperReverse() {\r\n var value = this.__wrapped__;\r\n if (value instanceof LazyWrapper) {\r\n var wrapped = value;\r\n if (this.__actions__.length) {\r\n wrapped = new LazyWrapper(this);\r\n }\r\n wrapped = wrapped.reverse();\r\n wrapped.__actions__.push({\r\n 'func': thru,\r\n 'args': [reverse],\r\n 'thisArg': undefined\r\n });\r\n return new LodashWrapper(wrapped, this.__chain__);\r\n }\r\n return this.thru(reverse);\r\n }\r\n\r\n /**\r\n * Executes the chain sequence to resolve the unwrapped value.\r\n *\r\n * @name value\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @alias toJSON, valueOf\r\n * @category Seq\r\n * @returns {*} Returns the resolved unwrapped value.\r\n * @example\r\n *\r\n * _([1, 2, 3]).value();\r\n * // => [1, 2, 3]\r\n */\r\n function wrapperValue() {\r\n return baseWrapperValue(this.__wrapped__, this.__actions__);\r\n }\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Creates an object composed of keys generated from the results of running\r\n * each element of `collection` thru `iteratee`. The corresponding value of\r\n * each key is the number of times the key was returned by `iteratee`. The\r\n * iteratee is invoked with one argument: (value).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.5.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\r\n * @returns {Object} Returns the composed aggregate object.\r\n * @example\r\n *\r\n * _.countBy([6.1, 4.2, 6.3], Math.floor);\r\n * // => { '4': 1, '6': 2 }\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.countBy(['one', 'two', 'three'], 'length');\r\n * // => { '3': 2, '5': 1 }\r\n */\r\n var countBy = createAggregator(function(result, value, key) {\r\n if (hasOwnProperty.call(result, key)) {\r\n ++result[key];\r\n } else {\r\n baseAssignValue(result, key, 1);\r\n }\r\n });\r\n\r\n /**\r\n * Checks if `predicate` returns truthy for **all** elements of `collection`.\r\n * Iteration is stopped once `predicate` returns falsey. The predicate is\r\n * invoked with three arguments: (value, index|key, collection).\r\n *\r\n * **Note:** This method returns `true` for\r\n * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because\r\n * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of\r\n * elements of empty collections.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\r\n * else `false`.\r\n * @example\r\n *\r\n * _.every([true, 1, null, 'yes'], Boolean);\r\n * // => false\r\n *\r\n * var users = [\r\n * { 'user': 'barney', 'age': 36, 'active': false },\r\n * { 'user': 'fred', 'age': 40, 'active': false }\r\n * ];\r\n *\r\n * // The `_.matches` iteratee shorthand.\r\n * _.every(users, { 'user': 'barney', 'active': false });\r\n * // => false\r\n *\r\n * // The `_.matchesProperty` iteratee shorthand.\r\n * _.every(users, ['active', false]);\r\n * // => true\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.every(users, 'active');\r\n * // => false\r\n */\r\n function every(collection, predicate, guard) {\r\n var func = isArray(collection) ? arrayEvery : baseEvery;\r\n if (guard && isIterateeCall(collection, predicate, guard)) {\r\n predicate = undefined;\r\n }\r\n return func(collection, getIteratee(predicate, 3));\r\n }\r\n\r\n /**\r\n * Iterates over elements of `collection`, returning an array of all elements\r\n * `predicate` returns truthy for. The predicate is invoked with three\r\n * arguments: (value, index|key, collection).\r\n *\r\n * **Note:** Unlike `_.remove`, this method returns a new array.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\r\n * @returns {Array} Returns the new filtered array.\r\n * @see _.reject\r\n * @example\r\n *\r\n * var users = [\r\n * { 'user': 'barney', 'age': 36, 'active': true },\r\n * { 'user': 'fred', 'age': 40, 'active': false }\r\n * ];\r\n *\r\n * _.filter(users, function(o) { return !o.active; });\r\n * // => objects for ['fred']\r\n *\r\n * // The `_.matches` iteratee shorthand.\r\n * _.filter(users, { 'age': 36, 'active': true });\r\n * // => objects for ['barney']\r\n *\r\n * // The `_.matchesProperty` iteratee shorthand.\r\n * _.filter(users, ['active', false]);\r\n * // => objects for ['fred']\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.filter(users, 'active');\r\n * // => objects for ['barney']\r\n *\r\n * // Combining several predicates using `_.overEvery` or `_.overSome`.\r\n * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]]));\r\n * // => objects for ['fred', 'barney']\r\n */\r\n function filter(collection, predicate) {\r\n var func = isArray(collection) ? arrayFilter : baseFilter;\r\n return func(collection, getIteratee(predicate, 3));\r\n }\r\n\r\n /**\r\n * Iterates over elements of `collection`, returning the first element\r\n * `predicate` returns truthy for. The predicate is invoked with three\r\n * arguments: (value, index|key, collection).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to inspect.\r\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\r\n * @param {number} [fromIndex=0] The index to search from.\r\n * @returns {*} Returns the matched element, else `undefined`.\r\n * @example\r\n *\r\n * var users = [\r\n * { 'user': 'barney', 'age': 36, 'active': true },\r\n * { 'user': 'fred', 'age': 40, 'active': false },\r\n * { 'user': 'pebbles', 'age': 1, 'active': true }\r\n * ];\r\n *\r\n * _.find(users, function(o) { return o.age < 40; });\r\n * // => object for 'barney'\r\n *\r\n * // The `_.matches` iteratee shorthand.\r\n * _.find(users, { 'age': 1, 'active': true });\r\n * // => object for 'pebbles'\r\n *\r\n * // The `_.matchesProperty` iteratee shorthand.\r\n * _.find(users, ['active', false]);\r\n * // => object for 'fred'\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.find(users, 'active');\r\n * // => object for 'barney'\r\n */\r\n var find = createFind(findIndex);\r\n\r\n /**\r\n * This method is like `_.find` except that it iterates over elements of\r\n * `collection` from right to left.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.0.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to inspect.\r\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\r\n * @param {number} [fromIndex=collection.length-1] The index to search from.\r\n * @returns {*} Returns the matched element, else `undefined`.\r\n * @example\r\n *\r\n * _.findLast([1, 2, 3, 4], function(n) {\r\n * return n % 2 == 1;\r\n * });\r\n * // => 3\r\n */\r\n var findLast = createFind(findLastIndex);\r\n\r\n /**\r\n * Creates a flattened array of values by running each element in `collection`\r\n * thru `iteratee` and flattening the mapped results. The iteratee is invoked\r\n * with three arguments: (value, index|key, collection).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\r\n * @returns {Array} Returns the new flattened array.\r\n * @example\r\n *\r\n * function duplicate(n) {\r\n * return [n, n];\r\n * }\r\n *\r\n * _.flatMap([1, 2], duplicate);\r\n * // => [1, 1, 2, 2]\r\n */\r\n function flatMap(collection, iteratee) {\r\n return baseFlatten(map(collection, iteratee), 1);\r\n }\r\n\r\n /**\r\n * This method is like `_.flatMap` except that it recursively flattens the\r\n * mapped results.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.7.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\r\n * @returns {Array} Returns the new flattened array.\r\n * @example\r\n *\r\n * function duplicate(n) {\r\n * return [[[n, n]]];\r\n * }\r\n *\r\n * _.flatMapDeep([1, 2], duplicate);\r\n * // => [1, 1, 2, 2]\r\n */\r\n function flatMapDeep(collection, iteratee) {\r\n return baseFlatten(map(collection, iteratee), INFINITY);\r\n }\r\n\r\n /**\r\n * This method is like `_.flatMap` except that it recursively flattens the\r\n * mapped results up to `depth` times.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.7.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\r\n * @param {number} [depth=1] The maximum recursion depth.\r\n * @returns {Array} Returns the new flattened array.\r\n * @example\r\n *\r\n * function duplicate(n) {\r\n * return [[[n, n]]];\r\n * }\r\n *\r\n * _.flatMapDepth([1, 2], duplicate, 2);\r\n * // => [[1, 1], [2, 2]]\r\n */\r\n function flatMapDepth(collection, iteratee, depth) {\r\n depth = depth === undefined ? 1 : toInteger(depth);\r\n return baseFlatten(map(collection, iteratee), depth);\r\n }\r\n\r\n /**\r\n * Iterates over elements of `collection` and invokes `iteratee` for each element.\r\n * The iteratee is invoked with three arguments: (value, index|key, collection).\r\n * Iteratee functions may exit iteration early by explicitly returning `false`.\r\n *\r\n * **Note:** As with other \"Collections\" methods, objects with a \"length\"\r\n * property are iterated like arrays. To avoid this behavior use `_.forIn`\r\n * or `_.forOwn` for object iteration.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @alias each\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\r\n * @returns {Array|Object} Returns `collection`.\r\n * @see _.forEachRight\r\n * @example\r\n *\r\n * _.forEach([1, 2], function(value) {\r\n * console.log(value);\r\n * });\r\n * // => Logs `1` then `2`.\r\n *\r\n * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {\r\n * console.log(key);\r\n * });\r\n * // => Logs 'a' then 'b' (iteration order is not guaranteed).\r\n */\r\n function forEach(collection, iteratee) {\r\n var func = isArray(collection) ? arrayEach : baseEach;\r\n return func(collection, getIteratee(iteratee, 3));\r\n }\r\n\r\n /**\r\n * This method is like `_.forEach` except that it iterates over elements of\r\n * `collection` from right to left.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.0.0\r\n * @alias eachRight\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\r\n * @returns {Array|Object} Returns `collection`.\r\n * @see _.forEach\r\n * @example\r\n *\r\n * _.forEachRight([1, 2], function(value) {\r\n * console.log(value);\r\n * });\r\n * // => Logs `2` then `1`.\r\n */\r\n function forEachRight(collection, iteratee) {\r\n var func = isArray(collection) ? arrayEachRight : baseEachRight;\r\n return func(collection, getIteratee(iteratee, 3));\r\n }\r\n\r\n /**\r\n * Creates an object composed of keys generated from the results of running\r\n * each element of `collection` thru `iteratee`. The order of grouped values\r\n * is determined by the order they occur in `collection`. The corresponding\r\n * value of each key is an array of elements responsible for generating the\r\n * key. The iteratee is invoked with one argument: (value).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\r\n * @returns {Object} Returns the composed aggregate object.\r\n * @example\r\n *\r\n * _.groupBy([6.1, 4.2, 6.3], Math.floor);\r\n * // => { '4': [4.2], '6': [6.1, 6.3] }\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.groupBy(['one', 'two', 'three'], 'length');\r\n * // => { '3': ['one', 'two'], '5': ['three'] }\r\n */\r\n var groupBy = createAggregator(function(result, value, key) {\r\n if (hasOwnProperty.call(result, key)) {\r\n result[key].push(value);\r\n } else {\r\n baseAssignValue(result, key, [value]);\r\n }\r\n });\r\n\r\n /**\r\n * Checks if `value` is in `collection`. If `collection` is a string, it's\r\n * checked for a substring of `value`, otherwise\r\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\r\n * is used for equality comparisons. If `fromIndex` is negative, it's used as\r\n * the offset from the end of `collection`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Collection\r\n * @param {Array|Object|string} collection The collection to inspect.\r\n * @param {*} value The value to search for.\r\n * @param {number} [fromIndex=0] The index to search from.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\r\n * @returns {boolean} Returns `true` if `value` is found, else `false`.\r\n * @example\r\n *\r\n * _.includes([1, 2, 3], 1);\r\n * // => true\r\n *\r\n * _.includes([1, 2, 3], 1, 2);\r\n * // => false\r\n *\r\n * _.includes({ 'a': 1, 'b': 2 }, 1);\r\n * // => true\r\n *\r\n * _.includes('abcd', 'bc');\r\n * // => true\r\n */\r\n function includes(collection, value, fromIndex, guard) {\r\n collection = isArrayLike(collection) ? collection : values(collection);\r\n fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;\r\n\r\n var length = collection.length;\r\n if (fromIndex < 0) {\r\n fromIndex = nativeMax(length + fromIndex, 0);\r\n }\r\n return isString(collection)\r\n ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)\r\n : (!!length && baseIndexOf(collection, value, fromIndex) > -1);\r\n }\r\n\r\n /**\r\n * Invokes the method at `path` of each element in `collection`, returning\r\n * an array of the results of each invoked method. Any additional arguments\r\n * are provided to each invoked method. If `path` is a function, it's invoked\r\n * for, and `this` bound to, each element in `collection`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Array|Function|string} path The path of the method to invoke or\r\n * the function invoked per iteration.\r\n * @param {...*} [args] The arguments to invoke each method with.\r\n * @returns {Array} Returns the array of results.\r\n * @example\r\n *\r\n * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');\r\n * // => [[1, 5, 7], [1, 2, 3]]\r\n *\r\n * _.invokeMap([123, 456], String.prototype.split, '');\r\n * // => [['1', '2', '3'], ['4', '5', '6']]\r\n */\r\n var invokeMap = baseRest(function(collection, path, args) {\r\n var index = -1,\r\n isFunc = typeof path == 'function',\r\n result = isArrayLike(collection) ? Array(collection.length) : [];\r\n\r\n baseEach(collection, function(value) {\r\n result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);\r\n });\r\n return result;\r\n });\r\n\r\n /**\r\n * Creates an object composed of keys generated from the results of running\r\n * each element of `collection` thru `iteratee`. The corresponding value of\r\n * each key is the last element responsible for generating the key. The\r\n * iteratee is invoked with one argument: (value).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\r\n * @returns {Object} Returns the composed aggregate object.\r\n * @example\r\n *\r\n * var array = [\r\n * { 'dir': 'left', 'code': 97 },\r\n * { 'dir': 'right', 'code': 100 }\r\n * ];\r\n *\r\n * _.keyBy(array, function(o) {\r\n * return String.fromCharCode(o.code);\r\n * });\r\n * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }\r\n *\r\n * _.keyBy(array, 'dir');\r\n * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }\r\n */\r\n var keyBy = createAggregator(function(result, value, key) {\r\n baseAssignValue(result, key, value);\r\n });\r\n\r\n /**\r\n * Creates an array of values by running each element in `collection` thru\r\n * `iteratee`. The iteratee is invoked with three arguments:\r\n * (value, index|key, collection).\r\n *\r\n * Many lodash methods are guarded to work as iteratees for methods like\r\n * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.\r\n *\r\n * The guarded methods are:\r\n * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,\r\n * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,\r\n * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,\r\n * `template`, `trim`, `trimEnd`, `trimStart`, and `words`\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\r\n * @returns {Array} Returns the new mapped array.\r\n * @example\r\n *\r\n * function square(n) {\r\n * return n * n;\r\n * }\r\n *\r\n * _.map([4, 8], square);\r\n * // => [16, 64]\r\n *\r\n * _.map({ 'a': 4, 'b': 8 }, square);\r\n * // => [16, 64] (iteration order is not guaranteed)\r\n *\r\n * var users = [\r\n * { 'user': 'barney' },\r\n * { 'user': 'fred' }\r\n * ];\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.map(users, 'user');\r\n * // => ['barney', 'fred']\r\n */\r\n function map(collection, iteratee) {\r\n var func = isArray(collection) ? arrayMap : baseMap;\r\n return func(collection, getIteratee(iteratee, 3));\r\n }\r\n\r\n /**\r\n * This method is like `_.sortBy` except that it allows specifying the sort\r\n * orders of the iteratees to sort by. If `orders` is unspecified, all values\r\n * are sorted in ascending order. Otherwise, specify an order of \"desc\" for\r\n * descending or \"asc\" for ascending sort order of corresponding values.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]\r\n * The iteratees to sort by.\r\n * @param {string[]} [orders] The sort orders of `iteratees`.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\r\n * @returns {Array} Returns the new sorted array.\r\n * @example\r\n *\r\n * var users = [\r\n * { 'user': 'fred', 'age': 48 },\r\n * { 'user': 'barney', 'age': 34 },\r\n * { 'user': 'fred', 'age': 40 },\r\n * { 'user': 'barney', 'age': 36 }\r\n * ];\r\n *\r\n * // Sort by `user` in ascending order and by `age` in descending order.\r\n * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);\r\n * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]\r\n */\r\n function orderBy(collection, iteratees, orders, guard) {\r\n if (collection == null) {\r\n return [];\r\n }\r\n if (!isArray(iteratees)) {\r\n iteratees = iteratees == null ? [] : [iteratees];\r\n }\r\n orders = guard ? undefined : orders;\r\n if (!isArray(orders)) {\r\n orders = orders == null ? [] : [orders];\r\n }\r\n return baseOrderBy(collection, iteratees, orders);\r\n }\r\n\r\n /**\r\n * Creates an array of elements split into two groups, the first of which\r\n * contains elements `predicate` returns truthy for, the second of which\r\n * contains elements `predicate` returns falsey for. The predicate is\r\n * invoked with one argument: (value).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\r\n * @returns {Array} Returns the array of grouped elements.\r\n * @example\r\n *\r\n * var users = [\r\n * { 'user': 'barney', 'age': 36, 'active': false },\r\n * { 'user': 'fred', 'age': 40, 'active': true },\r\n * { 'user': 'pebbles', 'age': 1, 'active': false }\r\n * ];\r\n *\r\n * _.partition(users, function(o) { return o.active; });\r\n * // => objects for [['fred'], ['barney', 'pebbles']]\r\n *\r\n * // The `_.matches` iteratee shorthand.\r\n * _.partition(users, { 'age': 1, 'active': false });\r\n * // => objects for [['pebbles'], ['barney', 'fred']]\r\n *\r\n * // The `_.matchesProperty` iteratee shorthand.\r\n * _.partition(users, ['active', false]);\r\n * // => objects for [['barney', 'pebbles'], ['fred']]\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.partition(users, 'active');\r\n * // => objects for [['fred'], ['barney', 'pebbles']]\r\n */\r\n var partition = createAggregator(function(result, value, key) {\r\n result[key ? 0 : 1].push(value);\r\n }, function() { return [[], []]; });\r\n\r\n /**\r\n * Reduces `collection` to a value which is the accumulated result of running\r\n * each element in `collection` thru `iteratee`, where each successive\r\n * invocation is supplied the return value of the previous. If `accumulator`\r\n * is not given, the first element of `collection` is used as the initial\r\n * value. The iteratee is invoked with four arguments:\r\n * (accumulator, value, index|key, collection).\r\n *\r\n * Many lodash methods are guarded to work as iteratees for methods like\r\n * `_.reduce`, `_.reduceRight`, and `_.transform`.\r\n *\r\n * The guarded methods are:\r\n * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,\r\n * and `sortBy`\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\r\n * @param {*} [accumulator] The initial value.\r\n * @returns {*} Returns the accumulated value.\r\n * @see _.reduceRight\r\n * @example\r\n *\r\n * _.reduce([1, 2], function(sum, n) {\r\n * return sum + n;\r\n * }, 0);\r\n * // => 3\r\n *\r\n * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\r\n * (result[value] || (result[value] = [])).push(key);\r\n * return result;\r\n * }, {});\r\n * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)\r\n */\r\n function reduce(collection, iteratee, accumulator) {\r\n var func = isArray(collection) ? arrayReduce : baseReduce,\r\n initAccum = arguments.length < 3;\r\n\r\n return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);\r\n }\r\n\r\n /**\r\n * This method is like `_.reduce` except that it iterates over elements of\r\n * `collection` from right to left.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\r\n * @param {*} [accumulator] The initial value.\r\n * @returns {*} Returns the accumulated value.\r\n * @see _.reduce\r\n * @example\r\n *\r\n * var array = [[0, 1], [2, 3], [4, 5]];\r\n *\r\n * _.reduceRight(array, function(flattened, other) {\r\n * return flattened.concat(other);\r\n * }, []);\r\n * // => [4, 5, 2, 3, 0, 1]\r\n */\r\n function reduceRight(collection, iteratee, accumulator) {\r\n var func = isArray(collection) ? arrayReduceRight : baseReduce,\r\n initAccum = arguments.length < 3;\r\n\r\n return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);\r\n }\r\n\r\n /**\r\n * The opposite of `_.filter`; this method returns the elements of `collection`\r\n * that `predicate` does **not** return truthy for.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\r\n * @returns {Array} Returns the new filtered array.\r\n * @see _.filter\r\n * @example\r\n *\r\n * var users = [\r\n * { 'user': 'barney', 'age': 36, 'active': false },\r\n * { 'user': 'fred', 'age': 40, 'active': true }\r\n * ];\r\n *\r\n * _.reject(users, function(o) { return !o.active; });\r\n * // => objects for ['fred']\r\n *\r\n * // The `_.matches` iteratee shorthand.\r\n * _.reject(users, { 'age': 40, 'active': true });\r\n * // => objects for ['barney']\r\n *\r\n * // The `_.matchesProperty` iteratee shorthand.\r\n * _.reject(users, ['active', false]);\r\n * // => objects for ['fred']\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.reject(users, 'active');\r\n * // => objects for ['barney']\r\n */\r\n function reject(collection, predicate) {\r\n var func = isArray(collection) ? arrayFilter : baseFilter;\r\n return func(collection, negate(getIteratee(predicate, 3)));\r\n }\r\n\r\n /**\r\n * Gets a random element from `collection`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.0.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to sample.\r\n * @returns {*} Returns the random element.\r\n * @example\r\n *\r\n * _.sample([1, 2, 3, 4]);\r\n * // => 2\r\n */\r\n function sample(collection) {\r\n var func = isArray(collection) ? arraySample : baseSample;\r\n return func(collection);\r\n }\r\n\r\n /**\r\n * Gets `n` random elements at unique keys from `collection` up to the\r\n * size of `collection`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to sample.\r\n * @param {number} [n=1] The number of elements to sample.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {Array} Returns the random elements.\r\n * @example\r\n *\r\n * _.sampleSize([1, 2, 3], 2);\r\n * // => [3, 1]\r\n *\r\n * _.sampleSize([1, 2, 3], 4);\r\n * // => [2, 3, 1]\r\n */\r\n function sampleSize(collection, n, guard) {\r\n if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {\r\n n = 1;\r\n } else {\r\n n = toInteger(n);\r\n }\r\n var func = isArray(collection) ? arraySampleSize : baseSampleSize;\r\n return func(collection, n);\r\n }\r\n\r\n /**\r\n * Creates an array of shuffled values, using a version of the\r\n * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to shuffle.\r\n * @returns {Array} Returns the new shuffled array.\r\n * @example\r\n *\r\n * _.shuffle([1, 2, 3, 4]);\r\n * // => [4, 1, 3, 2]\r\n */\r\n function shuffle(collection) {\r\n var func = isArray(collection) ? arrayShuffle : baseShuffle;\r\n return func(collection);\r\n }\r\n\r\n /**\r\n * Gets the size of `collection` by returning its length for array-like\r\n * values or the number of own enumerable string keyed properties for objects.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Collection\r\n * @param {Array|Object|string} collection The collection to inspect.\r\n * @returns {number} Returns the collection size.\r\n * @example\r\n *\r\n * _.size([1, 2, 3]);\r\n * // => 3\r\n *\r\n * _.size({ 'a': 1, 'b': 2 });\r\n * // => 2\r\n *\r\n * _.size('pebbles');\r\n * // => 7\r\n */\r\n function size(collection) {\r\n if (collection == null) {\r\n return 0;\r\n }\r\n if (isArrayLike(collection)) {\r\n return isString(collection) ? stringSize(collection) : collection.length;\r\n }\r\n var tag = getTag(collection);\r\n if (tag == mapTag || tag == setTag) {\r\n return collection.size;\r\n }\r\n return baseKeys(collection).length;\r\n }\r\n\r\n /**\r\n * Checks if `predicate` returns truthy for **any** element of `collection`.\r\n * Iteration is stopped once `predicate` returns truthy. The predicate is\r\n * invoked with three arguments: (value, index|key, collection).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {boolean} Returns `true` if any element passes the predicate check,\r\n * else `false`.\r\n * @example\r\n *\r\n * _.some([null, 0, 'yes', false], Boolean);\r\n * // => true\r\n *\r\n * var users = [\r\n * { 'user': 'barney', 'active': true },\r\n * { 'user': 'fred', 'active': false }\r\n * ];\r\n *\r\n * // The `_.matches` iteratee shorthand.\r\n * _.some(users, { 'user': 'barney', 'active': false });\r\n * // => false\r\n *\r\n * // The `_.matchesProperty` iteratee shorthand.\r\n * _.some(users, ['active', false]);\r\n * // => true\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.some(users, 'active');\r\n * // => true\r\n */\r\n function some(collection, predicate, guard) {\r\n var func = isArray(collection) ? arraySome : baseSome;\r\n if (guard && isIterateeCall(collection, predicate, guard)) {\r\n predicate = undefined;\r\n }\r\n return func(collection, getIteratee(predicate, 3));\r\n }\r\n\r\n /**\r\n * Creates an array of elements, sorted in ascending order by the results of\r\n * running each element in a collection thru each iteratee. This method\r\n * performs a stable sort, that is, it preserves the original sort order of\r\n * equal elements. The iteratees are invoked with one argument: (value).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {...(Function|Function[])} [iteratees=[_.identity]]\r\n * The iteratees to sort by.\r\n * @returns {Array} Returns the new sorted array.\r\n * @example\r\n *\r\n * var users = [\r\n * { 'user': 'fred', 'age': 48 },\r\n * { 'user': 'barney', 'age': 36 },\r\n * { 'user': 'fred', 'age': 30 },\r\n * { 'user': 'barney', 'age': 34 }\r\n * ];\r\n *\r\n * _.sortBy(users, [function(o) { return o.user; }]);\r\n * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 30]]\r\n *\r\n * _.sortBy(users, ['user', 'age']);\r\n * // => objects for [['barney', 34], ['barney', 36], ['fred', 30], ['fred', 48]]\r\n */\r\n var sortBy = baseRest(function(collection, iteratees) {\r\n if (collection == null) {\r\n return [];\r\n }\r\n var length = iteratees.length;\r\n if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {\r\n iteratees = [];\r\n } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {\r\n iteratees = [iteratees[0]];\r\n }\r\n return baseOrderBy(collection, baseFlatten(iteratees, 1), []);\r\n });\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Gets the timestamp of the number of milliseconds that have elapsed since\r\n * the Unix epoch (1 January 1970 00:00:00 UTC).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.4.0\r\n * @category Date\r\n * @returns {number} Returns the timestamp.\r\n * @example\r\n *\r\n * _.defer(function(stamp) {\r\n * console.log(_.now() - stamp);\r\n * }, _.now());\r\n * // => Logs the number of milliseconds it took for the deferred invocation.\r\n */\r\n var now = ctxNow || function() {\r\n return root.Date.now();\r\n };\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * The opposite of `_.before`; this method creates a function that invokes\r\n * `func` once it's called `n` or more times.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Function\r\n * @param {number} n The number of calls before `func` is invoked.\r\n * @param {Function} func The function to restrict.\r\n * @returns {Function} Returns the new restricted function.\r\n * @example\r\n *\r\n * var saves = ['profile', 'settings'];\r\n *\r\n * var done = _.after(saves.length, function() {\r\n * console.log('done saving!');\r\n * });\r\n *\r\n * _.forEach(saves, function(type) {\r\n * asyncSave({ 'type': type, 'complete': done });\r\n * });\r\n * // => Logs 'done saving!' after the two async saves have completed.\r\n */\r\n function after(n, func) {\r\n if (typeof func != 'function') {\r\n throw new TypeError(FUNC_ERROR_TEXT);\r\n }\r\n n = toInteger(n);\r\n return function() {\r\n if (--n < 1) {\r\n return func.apply(this, arguments);\r\n }\r\n };\r\n }\r\n\r\n /**\r\n * Creates a function that invokes `func`, with up to `n` arguments,\r\n * ignoring any additional arguments.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Function\r\n * @param {Function} func The function to cap arguments for.\r\n * @param {number} [n=func.length] The arity cap.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {Function} Returns the new capped function.\r\n * @example\r\n *\r\n * _.map(['6', '8', '10'], _.ary(parseInt, 1));\r\n * // => [6, 8, 10]\r\n */\r\n function ary(func, n, guard) {\r\n n = guard ? undefined : n;\r\n n = (func && n == null) ? func.length : n;\r\n return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);\r\n }\r\n\r\n /**\r\n * Creates a function that invokes `func`, with the `this` binding and arguments\r\n * of the created function, while it's called less than `n` times. Subsequent\r\n * calls to the created function return the result of the last `func` invocation.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Function\r\n * @param {number} n The number of calls at which `func` is no longer invoked.\r\n * @param {Function} func The function to restrict.\r\n * @returns {Function} Returns the new restricted function.\r\n * @example\r\n *\r\n * jQuery(element).on('click', _.before(5, addContactToList));\r\n * // => Allows adding up to 4 contacts to the list.\r\n */\r\n function before(n, func) {\r\n var result;\r\n if (typeof func != 'function') {\r\n throw new TypeError(FUNC_ERROR_TEXT);\r\n }\r\n n = toInteger(n);\r\n return function() {\r\n if (--n > 0) {\r\n result = func.apply(this, arguments);\r\n }\r\n if (n <= 1) {\r\n func = undefined;\r\n }\r\n return result;\r\n };\r\n }\r\n\r\n /**\r\n * Creates a function that invokes `func` with the `this` binding of `thisArg`\r\n * and `partials` prepended to the arguments it receives.\r\n *\r\n * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,\r\n * may be used as a placeholder for partially applied arguments.\r\n *\r\n * **Note:** Unlike native `Function#bind`, this method doesn't set the \"length\"\r\n * property of bound functions.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Function\r\n * @param {Function} func The function to bind.\r\n * @param {*} thisArg The `this` binding of `func`.\r\n * @param {...*} [partials] The arguments to be partially applied.\r\n * @returns {Function} Returns the new bound function.\r\n * @example\r\n *\r\n * function greet(greeting, punctuation) {\r\n * return greeting + ' ' + this.user + punctuation;\r\n * }\r\n *\r\n * var object = { 'user': 'fred' };\r\n *\r\n * var bound = _.bind(greet, object, 'hi');\r\n * bound('!');\r\n * // => 'hi fred!'\r\n *\r\n * // Bound with placeholders.\r\n * var bound = _.bind(greet, object, _, '!');\r\n * bound('hi');\r\n * // => 'hi fred!'\r\n */\r\n var bind = baseRest(function(func, thisArg, partials) {\r\n var bitmask = WRAP_BIND_FLAG;\r\n if (partials.length) {\r\n var holders = replaceHolders(partials, getHolder(bind));\r\n bitmask |= WRAP_PARTIAL_FLAG;\r\n }\r\n return createWrap(func, bitmask, thisArg, partials, holders);\r\n });\r\n\r\n /**\r\n * Creates a function that invokes the method at `object[key]` with `partials`\r\n * prepended to the arguments it receives.\r\n *\r\n * This method differs from `_.bind` by allowing bound functions to reference\r\n * methods that may be redefined or don't yet exist. See\r\n * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)\r\n * for more details.\r\n *\r\n * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic\r\n * builds, may be used as a placeholder for partially applied arguments.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.10.0\r\n * @category Function\r\n * @param {Object} object The object to invoke the method on.\r\n * @param {string} key The key of the method.\r\n * @param {...*} [partials] The arguments to be partially applied.\r\n * @returns {Function} Returns the new bound function.\r\n * @example\r\n *\r\n * var object = {\r\n * 'user': 'fred',\r\n * 'greet': function(greeting, punctuation) {\r\n * return greeting + ' ' + this.user + punctuation;\r\n * }\r\n * };\r\n *\r\n * var bound = _.bindKey(object, 'greet', 'hi');\r\n * bound('!');\r\n * // => 'hi fred!'\r\n *\r\n * object.greet = function(greeting, punctuation) {\r\n * return greeting + 'ya ' + this.user + punctuation;\r\n * };\r\n *\r\n * bound('!');\r\n * // => 'hiya fred!'\r\n *\r\n * // Bound with placeholders.\r\n * var bound = _.bindKey(object, 'greet', _, '!');\r\n * bound('hi');\r\n * // => 'hiya fred!'\r\n */\r\n var bindKey = baseRest(function(object, key, partials) {\r\n var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;\r\n if (partials.length) {\r\n var holders = replaceHolders(partials, getHolder(bindKey));\r\n bitmask |= WRAP_PARTIAL_FLAG;\r\n }\r\n return createWrap(key, bitmask, object, partials, holders);\r\n });\r\n\r\n /**\r\n * Creates a function that accepts arguments of `func` and either invokes\r\n * `func` returning its result, if at least `arity` number of arguments have\r\n * been provided, or returns a function that accepts the remaining `func`\r\n * arguments, and so on. The arity of `func` may be specified if `func.length`\r\n * is not sufficient.\r\n *\r\n * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,\r\n * may be used as a placeholder for provided arguments.\r\n *\r\n * **Note:** This method doesn't set the \"length\" property of curried functions.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.0.0\r\n * @category Function\r\n * @param {Function} func The function to curry.\r\n * @param {number} [arity=func.length] The arity of `func`.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {Function} Returns the new curried function.\r\n * @example\r\n *\r\n * var abc = function(a, b, c) {\r\n * return [a, b, c];\r\n * };\r\n *\r\n * var curried = _.curry(abc);\r\n *\r\n * curried(1)(2)(3);\r\n * // => [1, 2, 3]\r\n *\r\n * curried(1, 2)(3);\r\n * // => [1, 2, 3]\r\n *\r\n * curried(1, 2, 3);\r\n * // => [1, 2, 3]\r\n *\r\n * // Curried with placeholders.\r\n * curried(1)(_, 3)(2);\r\n * // => [1, 2, 3]\r\n */\r\n function curry(func, arity, guard) {\r\n arity = guard ? undefined : arity;\r\n var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\r\n result.placeholder = curry.placeholder;\r\n return result;\r\n }\r\n\r\n /**\r\n * This method is like `_.curry` except that arguments are applied to `func`\r\n * in the manner of `_.partialRight` instead of `_.partial`.\r\n *\r\n * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic\r\n * builds, may be used as a placeholder for provided arguments.\r\n *\r\n * **Note:** This method doesn't set the \"length\" property of curried functions.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Function\r\n * @param {Function} func The function to curry.\r\n * @param {number} [arity=func.length] The arity of `func`.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {Function} Returns the new curried function.\r\n * @example\r\n *\r\n * var abc = function(a, b, c) {\r\n * return [a, b, c];\r\n * };\r\n *\r\n * var curried = _.curryRight(abc);\r\n *\r\n * curried(3)(2)(1);\r\n * // => [1, 2, 3]\r\n *\r\n * curried(2, 3)(1);\r\n * // => [1, 2, 3]\r\n *\r\n * curried(1, 2, 3);\r\n * // => [1, 2, 3]\r\n *\r\n * // Curried with placeholders.\r\n * curried(3)(1, _)(2);\r\n * // => [1, 2, 3]\r\n */\r\n function curryRight(func, arity, guard) {\r\n arity = guard ? undefined : arity;\r\n var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\r\n result.placeholder = curryRight.placeholder;\r\n return result;\r\n }\r\n\r\n /**\r\n * Creates a debounced function that delays invoking `func` until after `wait`\r\n * milliseconds have elapsed since the last time the debounced function was\r\n * invoked. The debounced function comes with a `cancel` method to cancel\r\n * delayed `func` invocations and a `flush` method to immediately invoke them.\r\n * Provide `options` to indicate whether `func` should be invoked on the\r\n * leading and/or trailing edge of the `wait` timeout. The `func` is invoked\r\n * with the last arguments provided to the debounced function. Subsequent\r\n * calls to the debounced function return the result of the last `func`\r\n * invocation.\r\n *\r\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\r\n * invoked on the trailing edge of the timeout only if the debounced function\r\n * is invoked more than once during the `wait` timeout.\r\n *\r\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\r\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\r\n *\r\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\r\n * for details over the differences between `_.debounce` and `_.throttle`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Function\r\n * @param {Function} func The function to debounce.\r\n * @param {number} [wait=0] The number of milliseconds to delay.\r\n * @param {Object} [options={}] The options object.\r\n * @param {boolean} [options.leading=false]\r\n * Specify invoking on the leading edge of the timeout.\r\n * @param {number} [options.maxWait]\r\n * The maximum time `func` is allowed to be delayed before it's invoked.\r\n * @param {boolean} [options.trailing=true]\r\n * Specify invoking on the trailing edge of the timeout.\r\n * @returns {Function} Returns the new debounced function.\r\n * @example\r\n *\r\n * // Avoid costly calculations while the window size is in flux.\r\n * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\r\n *\r\n * // Invoke `sendMail` when clicked, debouncing subsequent calls.\r\n * jQuery(element).on('click', _.debounce(sendMail, 300, {\r\n * 'leading': true,\r\n * 'trailing': false\r\n * }));\r\n *\r\n * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\r\n * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\r\n * var source = new EventSource('/stream');\r\n * jQuery(source).on('message', debounced);\r\n *\r\n * // Cancel the trailing debounced invocation.\r\n * jQuery(window).on('popstate', debounced.cancel);\r\n */\r\n function debounce(func, wait, options) {\r\n var lastArgs,\r\n lastThis,\r\n maxWait,\r\n result,\r\n timerId,\r\n lastCallTime,\r\n lastInvokeTime = 0,\r\n leading = false,\r\n maxing = false,\r\n trailing = true;\r\n\r\n if (typeof func != 'function') {\r\n throw new TypeError(FUNC_ERROR_TEXT);\r\n }\r\n wait = toNumber(wait) || 0;\r\n if (isObject(options)) {\r\n leading = !!options.leading;\r\n maxing = 'maxWait' in options;\r\n maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\r\n trailing = 'trailing' in options ? !!options.trailing : trailing;\r\n }\r\n\r\n function invokeFunc(time) {\r\n var args = lastArgs,\r\n thisArg = lastThis;\r\n\r\n lastArgs = lastThis = undefined;\r\n lastInvokeTime = time;\r\n result = func.apply(thisArg, args);\r\n return result;\r\n }\r\n\r\n function leadingEdge(time) {\r\n // Reset any `maxWait` timer.\r\n lastInvokeTime = time;\r\n // Start the timer for the trailing edge.\r\n timerId = setTimeout(timerExpired, wait);\r\n // Invoke the leading edge.\r\n return leading ? invokeFunc(time) : result;\r\n }\r\n\r\n function remainingWait(time) {\r\n var timeSinceLastCall = time - lastCallTime,\r\n timeSinceLastInvoke = time - lastInvokeTime,\r\n timeWaiting = wait - timeSinceLastCall;\r\n\r\n return maxing\r\n ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)\r\n : timeWaiting;\r\n }\r\n\r\n function shouldInvoke(time) {\r\n var timeSinceLastCall = time - lastCallTime,\r\n timeSinceLastInvoke = time - lastInvokeTime;\r\n\r\n // Either this is the first call, activity has stopped and we're at the\r\n // trailing edge, the system time has gone backwards and we're treating\r\n // it as the trailing edge, or we've hit the `maxWait` limit.\r\n return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||\r\n (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));\r\n }\r\n\r\n function timerExpired() {\r\n var time = now();\r\n if (shouldInvoke(time)) {\r\n return trailingEdge(time);\r\n }\r\n // Restart the timer.\r\n timerId = setTimeout(timerExpired, remainingWait(time));\r\n }\r\n\r\n function trailingEdge(time) {\r\n timerId = undefined;\r\n\r\n // Only invoke if we have `lastArgs` which means `func` has been\r\n // debounced at least once.\r\n if (trailing && lastArgs) {\r\n return invokeFunc(time);\r\n }\r\n lastArgs = lastThis = undefined;\r\n return result;\r\n }\r\n\r\n function cancel() {\r\n if (timerId !== undefined) {\r\n clearTimeout(timerId);\r\n }\r\n lastInvokeTime = 0;\r\n lastArgs = lastCallTime = lastThis = timerId = undefined;\r\n }\r\n\r\n function flush() {\r\n return timerId === undefined ? result : trailingEdge(now());\r\n }\r\n\r\n function debounced() {\r\n var time = now(),\r\n isInvoking = shouldInvoke(time);\r\n\r\n lastArgs = arguments;\r\n lastThis = this;\r\n lastCallTime = time;\r\n\r\n if (isInvoking) {\r\n if (timerId === undefined) {\r\n return leadingEdge(lastCallTime);\r\n }\r\n if (maxing) {\r\n // Handle invocations in a tight loop.\r\n clearTimeout(timerId);\r\n timerId = setTimeout(timerExpired, wait);\r\n return invokeFunc(lastCallTime);\r\n }\r\n }\r\n if (timerId === undefined) {\r\n timerId = setTimeout(timerExpired, wait);\r\n }\r\n return result;\r\n }\r\n debounced.cancel = cancel;\r\n debounced.flush = flush;\r\n return debounced;\r\n }\r\n\r\n /**\r\n * Defers invoking the `func` until the current call stack has cleared. Any\r\n * additional arguments are provided to `func` when it's invoked.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Function\r\n * @param {Function} func The function to defer.\r\n * @param {...*} [args] The arguments to invoke `func` with.\r\n * @returns {number} Returns the timer id.\r\n * @example\r\n *\r\n * _.defer(function(text) {\r\n * console.log(text);\r\n * }, 'deferred');\r\n * // => Logs 'deferred' after one millisecond.\r\n */\r\n var defer = baseRest(function(func, args) {\r\n return baseDelay(func, 1, args);\r\n });\r\n\r\n /**\r\n * Invokes `func` after `wait` milliseconds. Any additional arguments are\r\n * provided to `func` when it's invoked.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Function\r\n * @param {Function} func The function to delay.\r\n * @param {number} wait The number of milliseconds to delay invocation.\r\n * @param {...*} [args] The arguments to invoke `func` with.\r\n * @returns {number} Returns the timer id.\r\n * @example\r\n *\r\n * _.delay(function(text) {\r\n * console.log(text);\r\n * }, 1000, 'later');\r\n * // => Logs 'later' after one second.\r\n */\r\n var delay = baseRest(function(func, wait, args) {\r\n return baseDelay(func, toNumber(wait) || 0, args);\r\n });\r\n\r\n /**\r\n * Creates a function that invokes `func` with arguments reversed.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Function\r\n * @param {Function} func The function to flip arguments for.\r\n * @returns {Function} Returns the new flipped function.\r\n * @example\r\n *\r\n * var flipped = _.flip(function() {\r\n * return _.toArray(arguments);\r\n * });\r\n *\r\n * flipped('a', 'b', 'c', 'd');\r\n * // => ['d', 'c', 'b', 'a']\r\n */\r\n function flip(func) {\r\n return createWrap(func, WRAP_FLIP_FLAG);\r\n }\r\n\r\n /**\r\n * Creates a function that memoizes the result of `func`. If `resolver` is\r\n * provided, it determines the cache key for storing the result based on the\r\n * arguments provided to the memoized function. By default, the first argument\r\n * provided to the memoized function is used as the map cache key. The `func`\r\n * is invoked with the `this` binding of the memoized function.\r\n *\r\n * **Note:** The cache is exposed as the `cache` property on the memoized\r\n * function. Its creation may be customized by replacing the `_.memoize.Cache`\r\n * constructor with one whose instances implement the\r\n * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)\r\n * method interface of `clear`, `delete`, `get`, `has`, and `set`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Function\r\n * @param {Function} func The function to have its output memoized.\r\n * @param {Function} [resolver] The function to resolve the cache key.\r\n * @returns {Function} Returns the new memoized function.\r\n * @example\r\n *\r\n * var object = { 'a': 1, 'b': 2 };\r\n * var other = { 'c': 3, 'd': 4 };\r\n *\r\n * var values = _.memoize(_.values);\r\n * values(object);\r\n * // => [1, 2]\r\n *\r\n * values(other);\r\n * // => [3, 4]\r\n *\r\n * object.a = 2;\r\n * values(object);\r\n * // => [1, 2]\r\n *\r\n * // Modify the result cache.\r\n * values.cache.set(object, ['a', 'b']);\r\n * values(object);\r\n * // => ['a', 'b']\r\n *\r\n * // Replace `_.memoize.Cache`.\r\n * _.memoize.Cache = WeakMap;\r\n */\r\n function memoize(func, resolver) {\r\n if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {\r\n throw new TypeError(FUNC_ERROR_TEXT);\r\n }\r\n var memoized = function() {\r\n var args = arguments,\r\n key = resolver ? resolver.apply(this, args) : args[0],\r\n cache = memoized.cache;\r\n\r\n if (cache.has(key)) {\r\n return cache.get(key);\r\n }\r\n var result = func.apply(this, args);\r\n memoized.cache = cache.set(key, result) || cache;\r\n return result;\r\n };\r\n memoized.cache = new (memoize.Cache || MapCache);\r\n return memoized;\r\n }\r\n\r\n // Expose `MapCache`.\r\n memoize.Cache = MapCache;\r\n\r\n /**\r\n * Creates a function that negates the result of the predicate `func`. The\r\n * `func` predicate is invoked with the `this` binding and arguments of the\r\n * created function.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Function\r\n * @param {Function} predicate The predicate to negate.\r\n * @returns {Function} Returns the new negated function.\r\n * @example\r\n *\r\n * function isEven(n) {\r\n * return n % 2 == 0;\r\n * }\r\n *\r\n * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));\r\n * // => [1, 3, 5]\r\n */\r\n function negate(predicate) {\r\n if (typeof predicate != 'function') {\r\n throw new TypeError(FUNC_ERROR_TEXT);\r\n }\r\n return function() {\r\n var args = arguments;\r\n switch (args.length) {\r\n case 0: return !predicate.call(this);\r\n case 1: return !predicate.call(this, args[0]);\r\n case 2: return !predicate.call(this, args[0], args[1]);\r\n case 3: return !predicate.call(this, args[0], args[1], args[2]);\r\n }\r\n return !predicate.apply(this, args);\r\n };\r\n }\r\n\r\n /**\r\n * Creates a function that is restricted to invoking `func` once. Repeat calls\r\n * to the function return the value of the first invocation. The `func` is\r\n * invoked with the `this` binding and arguments of the created function.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Function\r\n * @param {Function} func The function to restrict.\r\n * @returns {Function} Returns the new restricted function.\r\n * @example\r\n *\r\n * var initialize = _.once(createApplication);\r\n * initialize();\r\n * initialize();\r\n * // => `createApplication` is invoked once\r\n */\r\n function once(func) {\r\n return before(2, func);\r\n }\r\n\r\n /**\r\n * Creates a function that invokes `func` with its arguments transformed.\r\n *\r\n * @static\r\n * @since 4.0.0\r\n * @memberOf _\r\n * @category Function\r\n * @param {Function} func The function to wrap.\r\n * @param {...(Function|Function[])} [transforms=[_.identity]]\r\n * The argument transforms.\r\n * @returns {Function} Returns the new function.\r\n * @example\r\n *\r\n * function doubled(n) {\r\n * return n * 2;\r\n * }\r\n *\r\n * function square(n) {\r\n * return n * n;\r\n * }\r\n *\r\n * var func = _.overArgs(function(x, y) {\r\n * return [x, y];\r\n * }, [square, doubled]);\r\n *\r\n * func(9, 3);\r\n * // => [81, 6]\r\n *\r\n * func(10, 5);\r\n * // => [100, 10]\r\n */\r\n var overArgs = castRest(function(func, transforms) {\r\n transforms = (transforms.length == 1 && isArray(transforms[0]))\r\n ? arrayMap(transforms[0], baseUnary(getIteratee()))\r\n : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));\r\n\r\n var funcsLength = transforms.length;\r\n return baseRest(function(args) {\r\n var index = -1,\r\n length = nativeMin(args.length, funcsLength);\r\n\r\n while (++index < length) {\r\n args[index] = transforms[index].call(this, args[index]);\r\n }\r\n return apply(func, this, args);\r\n });\r\n });\r\n\r\n /**\r\n * Creates a function that invokes `func` with `partials` prepended to the\r\n * arguments it receives. This method is like `_.bind` except it does **not**\r\n * alter the `this` binding.\r\n *\r\n * The `_.partial.placeholder` value, which defaults to `_` in monolithic\r\n * builds, may be used as a placeholder for partially applied arguments.\r\n *\r\n * **Note:** This method doesn't set the \"length\" property of partially\r\n * applied functions.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.2.0\r\n * @category Function\r\n * @param {Function} func The function to partially apply arguments to.\r\n * @param {...*} [partials] The arguments to be partially applied.\r\n * @returns {Function} Returns the new partially applied function.\r\n * @example\r\n *\r\n * function greet(greeting, name) {\r\n * return greeting + ' ' + name;\r\n * }\r\n *\r\n * var sayHelloTo = _.partial(greet, 'hello');\r\n * sayHelloTo('fred');\r\n * // => 'hello fred'\r\n *\r\n * // Partially applied with placeholders.\r\n * var greetFred = _.partial(greet, _, 'fred');\r\n * greetFred('hi');\r\n * // => 'hi fred'\r\n */\r\n var partial = baseRest(function(func, partials) {\r\n var holders = replaceHolders(partials, getHolder(partial));\r\n return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);\r\n });\r\n\r\n /**\r\n * This method is like `_.partial` except that partially applied arguments\r\n * are appended to the arguments it receives.\r\n *\r\n * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic\r\n * builds, may be used as a placeholder for partially applied arguments.\r\n *\r\n * **Note:** This method doesn't set the \"length\" property of partially\r\n * applied functions.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 1.0.0\r\n * @category Function\r\n * @param {Function} func The function to partially apply arguments to.\r\n * @param {...*} [partials] The arguments to be partially applied.\r\n * @returns {Function} Returns the new partially applied function.\r\n * @example\r\n *\r\n * function greet(greeting, name) {\r\n * return greeting + ' ' + name;\r\n * }\r\n *\r\n * var greetFred = _.partialRight(greet, 'fred');\r\n * greetFred('hi');\r\n * // => 'hi fred'\r\n *\r\n * // Partially applied with placeholders.\r\n * var sayHelloTo = _.partialRight(greet, 'hello', _);\r\n * sayHelloTo('fred');\r\n * // => 'hello fred'\r\n */\r\n var partialRight = baseRest(function(func, partials) {\r\n var holders = replaceHolders(partials, getHolder(partialRight));\r\n return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);\r\n });\r\n\r\n /**\r\n * Creates a function that invokes `func` with arguments arranged according\r\n * to the specified `indexes` where the argument value at the first index is\r\n * provided as the first argument, the argument value at the second index is\r\n * provided as the second argument, and so on.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Function\r\n * @param {Function} func The function to rearrange arguments for.\r\n * @param {...(number|number[])} indexes The arranged argument indexes.\r\n * @returns {Function} Returns the new function.\r\n * @example\r\n *\r\n * var rearged = _.rearg(function(a, b, c) {\r\n * return [a, b, c];\r\n * }, [2, 0, 1]);\r\n *\r\n * rearged('b', 'c', 'a')\r\n * // => ['a', 'b', 'c']\r\n */\r\n var rearg = flatRest(function(func, indexes) {\r\n return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);\r\n });\r\n\r\n /**\r\n * Creates a function that invokes `func` with the `this` binding of the\r\n * created function and arguments from `start` and beyond provided as\r\n * an array.\r\n *\r\n * **Note:** This method is based on the\r\n * [rest parameter](https://mdn.io/rest_parameters).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Function\r\n * @param {Function} func The function to apply a rest parameter to.\r\n * @param {number} [start=func.length-1] The start position of the rest parameter.\r\n * @returns {Function} Returns the new function.\r\n * @example\r\n *\r\n * var say = _.rest(function(what, names) {\r\n * return what + ' ' + _.initial(names).join(', ') +\r\n * (_.size(names) > 1 ? ', & ' : '') + _.last(names);\r\n * });\r\n *\r\n * say('hello', 'fred', 'barney', 'pebbles');\r\n * // => 'hello fred, barney, & pebbles'\r\n */\r\n function rest(func, start) {\r\n if (typeof func != 'function') {\r\n throw new TypeError(FUNC_ERROR_TEXT);\r\n }\r\n start = start === undefined ? start : toInteger(start);\r\n return baseRest(func, start);\r\n }\r\n\r\n /**\r\n * Creates a function that invokes `func` with the `this` binding of the\r\n * create function and an array of arguments much like\r\n * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).\r\n *\r\n * **Note:** This method is based on the\r\n * [spread operator](https://mdn.io/spread_operator).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.2.0\r\n * @category Function\r\n * @param {Function} func The function to spread arguments over.\r\n * @param {number} [start=0] The start position of the spread.\r\n * @returns {Function} Returns the new function.\r\n * @example\r\n *\r\n * var say = _.spread(function(who, what) {\r\n * return who + ' says ' + what;\r\n * });\r\n *\r\n * say(['fred', 'hello']);\r\n * // => 'fred says hello'\r\n *\r\n * var numbers = Promise.all([\r\n * Promise.resolve(40),\r\n * Promise.resolve(36)\r\n * ]);\r\n *\r\n * numbers.then(_.spread(function(x, y) {\r\n * return x + y;\r\n * }));\r\n * // => a Promise of 76\r\n */\r\n function spread(func, start) {\r\n if (typeof func != 'function') {\r\n throw new TypeError(FUNC_ERROR_TEXT);\r\n }\r\n start = start == null ? 0 : nativeMax(toInteger(start), 0);\r\n return baseRest(function(args) {\r\n var array = args[start],\r\n otherArgs = castSlice(args, 0, start);\r\n\r\n if (array) {\r\n arrayPush(otherArgs, array);\r\n }\r\n return apply(func, this, otherArgs);\r\n });\r\n }\r\n\r\n /**\r\n * Creates a throttled function that only invokes `func` at most once per\r\n * every `wait` milliseconds. The throttled function comes with a `cancel`\r\n * method to cancel delayed `func` invocations and a `flush` method to\r\n * immediately invoke them. Provide `options` to indicate whether `func`\r\n * should be invoked on the leading and/or trailing edge of the `wait`\r\n * timeout. The `func` is invoked with the last arguments provided to the\r\n * throttled function. Subsequent calls to the throttled function return the\r\n * result of the last `func` invocation.\r\n *\r\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\r\n * invoked on the trailing edge of the timeout only if the throttled function\r\n * is invoked more than once during the `wait` timeout.\r\n *\r\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\r\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\r\n *\r\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\r\n * for details over the differences between `_.throttle` and `_.debounce`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Function\r\n * @param {Function} func The function to throttle.\r\n * @param {number} [wait=0] The number of milliseconds to throttle invocations to.\r\n * @param {Object} [options={}] The options object.\r\n * @param {boolean} [options.leading=true]\r\n * Specify invoking on the leading edge of the timeout.\r\n * @param {boolean} [options.trailing=true]\r\n * Specify invoking on the trailing edge of the timeout.\r\n * @returns {Function} Returns the new throttled function.\r\n * @example\r\n *\r\n * // Avoid excessively updating the position while scrolling.\r\n * jQuery(window).on('scroll', _.throttle(updatePosition, 100));\r\n *\r\n * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.\r\n * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });\r\n * jQuery(element).on('click', throttled);\r\n *\r\n * // Cancel the trailing throttled invocation.\r\n * jQuery(window).on('popstate', throttled.cancel);\r\n */\r\n function throttle(func, wait, options) {\r\n var leading = true,\r\n trailing = true;\r\n\r\n if (typeof func != 'function') {\r\n throw new TypeError(FUNC_ERROR_TEXT);\r\n }\r\n if (isObject(options)) {\r\n leading = 'leading' in options ? !!options.leading : leading;\r\n trailing = 'trailing' in options ? !!options.trailing : trailing;\r\n }\r\n return debounce(func, wait, {\r\n 'leading': leading,\r\n 'maxWait': wait,\r\n 'trailing': trailing\r\n });\r\n }\r\n\r\n /**\r\n * Creates a function that accepts up to one argument, ignoring any\r\n * additional arguments.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Function\r\n * @param {Function} func The function to cap arguments for.\r\n * @returns {Function} Returns the new capped function.\r\n * @example\r\n *\r\n * _.map(['6', '8', '10'], _.unary(parseInt));\r\n * // => [6, 8, 10]\r\n */\r\n function unary(func) {\r\n return ary(func, 1);\r\n }\r\n\r\n /**\r\n * Creates a function that provides `value` to `wrapper` as its first\r\n * argument. Any additional arguments provided to the function are appended\r\n * to those provided to the `wrapper`. The wrapper is invoked with the `this`\r\n * binding of the created function.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Function\r\n * @param {*} value The value to wrap.\r\n * @param {Function} [wrapper=identity] The wrapper function.\r\n * @returns {Function} Returns the new function.\r\n * @example\r\n *\r\n * var p = _.wrap(_.escape, function(func, text) {\r\n * return '<p>' + func(text) + '</p>';\r\n * });\r\n *\r\n * p('fred, barney, & pebbles');\r\n * // => '<p>fred, barney, &amp; pebbles</p>'\r\n */\r\n function wrap(value, wrapper) {\r\n return partial(castFunction(wrapper), value);\r\n }\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Casts `value` as an array if it's not one.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.4.0\r\n * @category Lang\r\n * @param {*} value The value to inspect.\r\n * @returns {Array} Returns the cast array.\r\n * @example\r\n *\r\n * _.castArray(1);\r\n * // => [1]\r\n *\r\n * _.castArray({ 'a': 1 });\r\n * // => [{ 'a': 1 }]\r\n *\r\n * _.castArray('abc');\r\n * // => ['abc']\r\n *\r\n * _.castArray(null);\r\n * // => [null]\r\n *\r\n * _.castArray(undefined);\r\n * // => [undefined]\r\n *\r\n * _.castArray();\r\n * // => []\r\n *\r\n * var array = [1, 2, 3];\r\n * console.log(_.castArray(array) === array);\r\n * // => true\r\n */\r\n function castArray() {\r\n if (!arguments.length) {\r\n return [];\r\n }\r\n var value = arguments[0];\r\n return isArray(value) ? value : [value];\r\n }\r\n\r\n /**\r\n * Creates a shallow clone of `value`.\r\n *\r\n * **Note:** This method is loosely based on the\r\n * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)\r\n * and supports cloning arrays, array buffers, booleans, date objects, maps,\r\n * numbers, `Object` objects, regexes, sets, strings, symbols, and typed\r\n * arrays. The own enumerable properties of `arguments` objects are cloned\r\n * as plain objects. An empty object is returned for uncloneable values such\r\n * as error objects, functions, DOM nodes, and WeakMaps.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Lang\r\n * @param {*} value The value to clone.\r\n * @returns {*} Returns the cloned value.\r\n * @see _.cloneDeep\r\n * @example\r\n *\r\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\r\n *\r\n * var shallow = _.clone(objects);\r\n * console.log(shallow[0] === objects[0]);\r\n * // => true\r\n */\r\n function clone(value) {\r\n return baseClone(value, CLONE_SYMBOLS_FLAG);\r\n }\r\n\r\n /**\r\n * This method is like `_.clone` except that it accepts `customizer` which\r\n * is invoked to produce the cloned value. If `customizer` returns `undefined`,\r\n * cloning is handled by the method instead. The `customizer` is invoked with\r\n * up to four arguments; (value [, index|key, object, stack]).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to clone.\r\n * @param {Function} [customizer] The function to customize cloning.\r\n * @returns {*} Returns the cloned value.\r\n * @see _.cloneDeepWith\r\n * @example\r\n *\r\n * function customizer(value) {\r\n * if (_.isElement(value)) {\r\n * return value.cloneNode(false);\r\n * }\r\n * }\r\n *\r\n * var el = _.cloneWith(document.body, customizer);\r\n *\r\n * console.log(el === document.body);\r\n * // => false\r\n * console.log(el.nodeName);\r\n * // => 'BODY'\r\n * console.log(el.childNodes.length);\r\n * // => 0\r\n */\r\n function cloneWith(value, customizer) {\r\n customizer = typeof customizer == 'function' ? customizer : undefined;\r\n return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);\r\n }\r\n\r\n /**\r\n * This method is like `_.clone` except that it recursively clones `value`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 1.0.0\r\n * @category Lang\r\n * @param {*} value The value to recursively clone.\r\n * @returns {*} Returns the deep cloned value.\r\n * @see _.clone\r\n * @example\r\n *\r\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\r\n *\r\n * var deep = _.cloneDeep(objects);\r\n * console.log(deep[0] === objects[0]);\r\n * // => false\r\n */\r\n function cloneDeep(value) {\r\n return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);\r\n }\r\n\r\n /**\r\n * This method is like `_.cloneWith` except that it recursively clones `value`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to recursively clone.\r\n * @param {Function} [customizer] The function to customize cloning.\r\n * @returns {*} Returns the deep cloned value.\r\n * @see _.cloneWith\r\n * @example\r\n *\r\n * function customizer(value) {\r\n * if (_.isElement(value)) {\r\n * return value.cloneNode(true);\r\n * }\r\n * }\r\n *\r\n * var el = _.cloneDeepWith(document.body, customizer);\r\n *\r\n * console.log(el === document.body);\r\n * // => false\r\n * console.log(el.nodeName);\r\n * // => 'BODY'\r\n * console.log(el.childNodes.length);\r\n * // => 20\r\n */\r\n function cloneDeepWith(value, customizer) {\r\n customizer = typeof customizer == 'function' ? customizer : undefined;\r\n return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);\r\n }\r\n\r\n /**\r\n * Checks if `object` conforms to `source` by invoking the predicate\r\n * properties of `source` with the corresponding property values of `object`.\r\n *\r\n * **Note:** This method is equivalent to `_.conforms` when `source` is\r\n * partially applied.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.14.0\r\n * @category Lang\r\n * @param {Object} object The object to inspect.\r\n * @param {Object} source The object of property predicates to conform to.\r\n * @returns {boolean} Returns `true` if `object` conforms, else `false`.\r\n * @example\r\n *\r\n * var object = { 'a': 1, 'b': 2 };\r\n *\r\n * _.conformsTo(object, { 'b': function(n) { return n > 1; } });\r\n * // => true\r\n *\r\n * _.conformsTo(object, { 'b': function(n) { return n > 2; } });\r\n * // => false\r\n */\r\n function conformsTo(object, source) {\r\n return source == null || baseConformsTo(object, source, keys(source));\r\n }\r\n\r\n /**\r\n * Performs a\r\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\r\n * comparison between two values to determine if they are equivalent.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to compare.\r\n * @param {*} other The other value to compare.\r\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\r\n * @example\r\n *\r\n * var object = { 'a': 1 };\r\n * var other = { 'a': 1 };\r\n *\r\n * _.eq(object, object);\r\n * // => true\r\n *\r\n * _.eq(object, other);\r\n * // => false\r\n *\r\n * _.eq('a', 'a');\r\n * // => true\r\n *\r\n * _.eq('a', Object('a'));\r\n * // => false\r\n *\r\n * _.eq(NaN, NaN);\r\n * // => true\r\n */\r\n function eq(value, other) {\r\n return value === other || (value !== value && other !== other);\r\n }\r\n\r\n /**\r\n * Checks if `value` is greater than `other`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.9.0\r\n * @category Lang\r\n * @param {*} value The value to compare.\r\n * @param {*} other The other value to compare.\r\n * @returns {boolean} Returns `true` if `value` is greater than `other`,\r\n * else `false`.\r\n * @see _.lt\r\n * @example\r\n *\r\n * _.gt(3, 1);\r\n * // => true\r\n *\r\n * _.gt(3, 3);\r\n * // => false\r\n *\r\n * _.gt(1, 3);\r\n * // => false\r\n */\r\n var gt = createRelationalOperation(baseGt);\r\n\r\n /**\r\n * Checks if `value` is greater than or equal to `other`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.9.0\r\n * @category Lang\r\n * @param {*} value The value to compare.\r\n * @param {*} other The other value to compare.\r\n * @returns {boolean} Returns `true` if `value` is greater than or equal to\r\n * `other`, else `false`.\r\n * @see _.lte\r\n * @example\r\n *\r\n * _.gte(3, 1);\r\n * // => true\r\n *\r\n * _.gte(3, 3);\r\n * // => true\r\n *\r\n * _.gte(1, 3);\r\n * // => false\r\n */\r\n var gte = createRelationalOperation(function(value, other) {\r\n return value >= other;\r\n });\r\n\r\n /**\r\n * Checks if `value` is likely an `arguments` object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\r\n * else `false`.\r\n * @example\r\n *\r\n * _.isArguments(function() { return arguments; }());\r\n * // => true\r\n *\r\n * _.isArguments([1, 2, 3]);\r\n * // => false\r\n */\r\n var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {\r\n return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&\r\n !propertyIsEnumerable.call(value, 'callee');\r\n };\r\n\r\n /**\r\n * Checks if `value` is classified as an `Array` object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is an array, else `false`.\r\n * @example\r\n *\r\n * _.isArray([1, 2, 3]);\r\n * // => true\r\n *\r\n * _.isArray(document.body.children);\r\n * // => false\r\n *\r\n * _.isArray('abc');\r\n * // => false\r\n *\r\n * _.isArray(_.noop);\r\n * // => false\r\n */\r\n var isArray = Array.isArray;\r\n\r\n /**\r\n * Checks if `value` is classified as an `ArrayBuffer` object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.3.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\r\n * @example\r\n *\r\n * _.isArrayBuffer(new ArrayBuffer(2));\r\n * // => true\r\n *\r\n * _.isArrayBuffer(new Array(2));\r\n * // => false\r\n */\r\n var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;\r\n\r\n /**\r\n * Checks if `value` is array-like. A value is considered array-like if it's\r\n * not a function and has a `value.length` that's an integer greater than or\r\n * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\r\n * @example\r\n *\r\n * _.isArrayLike([1, 2, 3]);\r\n * // => true\r\n *\r\n * _.isArrayLike(document.body.children);\r\n * // => true\r\n *\r\n * _.isArrayLike('abc');\r\n * // => true\r\n *\r\n * _.isArrayLike(_.noop);\r\n * // => false\r\n */\r\n function isArrayLike(value) {\r\n return value != null && isLength(value.length) && !isFunction(value);\r\n }\r\n\r\n /**\r\n * This method is like `_.isArrayLike` except that it also checks if `value`\r\n * is an object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is an array-like object,\r\n * else `false`.\r\n * @example\r\n *\r\n * _.isArrayLikeObject([1, 2, 3]);\r\n * // => true\r\n *\r\n * _.isArrayLikeObject(document.body.children);\r\n * // => true\r\n *\r\n * _.isArrayLikeObject('abc');\r\n * // => false\r\n *\r\n * _.isArrayLikeObject(_.noop);\r\n * // => false\r\n */\r\n function isArrayLikeObject(value) {\r\n return isObjectLike(value) && isArrayLike(value);\r\n }\r\n\r\n /**\r\n * Checks if `value` is classified as a boolean primitive or object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.\r\n * @example\r\n *\r\n * _.isBoolean(false);\r\n * // => true\r\n *\r\n * _.isBoolean(null);\r\n * // => false\r\n */\r\n function isBoolean(value) {\r\n return value === true || value === false ||\r\n (isObjectLike(value) && baseGetTag(value) == boolTag);\r\n }\r\n\r\n /**\r\n * Checks if `value` is a buffer.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.3.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\r\n * @example\r\n *\r\n * _.isBuffer(new Buffer(2));\r\n * // => true\r\n *\r\n * _.isBuffer(new Uint8Array(2));\r\n * // => false\r\n */\r\n var isBuffer = nativeIsBuffer || stubFalse;\r\n\r\n /**\r\n * Checks if `value` is classified as a `Date` object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\r\n * @example\r\n *\r\n * _.isDate(new Date);\r\n * // => true\r\n *\r\n * _.isDate('Mon April 23 2012');\r\n * // => false\r\n */\r\n var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;\r\n\r\n /**\r\n * Checks if `value` is likely a DOM element.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.\r\n * @example\r\n *\r\n * _.isElement(document.body);\r\n * // => true\r\n *\r\n * _.isElement('<body>');\r\n * // => false\r\n */\r\n function isElement(value) {\r\n return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);\r\n }\r\n\r\n /**\r\n * Checks if `value` is an empty object, collection, map, or set.\r\n *\r\n * Objects are considered empty if they have no own enumerable string keyed\r\n * properties.\r\n *\r\n * Array-like values such as `arguments` objects, arrays, buffers, strings, or\r\n * jQuery-like collections are considered empty if they have a `length` of `0`.\r\n * Similarly, maps and sets are considered empty if they have a `size` of `0`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is empty, else `false`.\r\n * @example\r\n *\r\n * _.isEmpty(null);\r\n * // => true\r\n *\r\n * _.isEmpty(true);\r\n * // => true\r\n *\r\n * _.isEmpty(1);\r\n * // => true\r\n *\r\n * _.isEmpty([1, 2, 3]);\r\n * // => false\r\n *\r\n * _.isEmpty({ 'a': 1 });\r\n * // => false\r\n */\r\n function isEmpty(value) {\r\n if (value == null) {\r\n return true;\r\n }\r\n if (isArrayLike(value) &&\r\n (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||\r\n isBuffer(value) || isTypedArray(value) || isArguments(value))) {\r\n return !value.length;\r\n }\r\n var tag = getTag(value);\r\n if (tag == mapTag || tag == setTag) {\r\n return !value.size;\r\n }\r\n if (isPrototype(value)) {\r\n return !baseKeys(value).length;\r\n }\r\n for (var key in value) {\r\n if (hasOwnProperty.call(value, key)) {\r\n return false;\r\n }\r\n }\r\n return true;\r\n }\r\n\r\n /**\r\n * Performs a deep comparison between two values to determine if they are\r\n * equivalent.\r\n *\r\n * **Note:** This method supports comparing arrays, array buffers, booleans,\r\n * date objects, error objects, maps, numbers, `Object` objects, regexes,\r\n * sets, strings, symbols, and typed arrays. `Object` objects are compared\r\n * by their own, not inherited, enumerable properties. Functions and DOM\r\n * nodes are compared by strict equality, i.e. `===`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Lang\r\n * @param {*} value The value to compare.\r\n * @param {*} other The other value to compare.\r\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\r\n * @example\r\n *\r\n * var object = { 'a': 1 };\r\n * var other = { 'a': 1 };\r\n *\r\n * _.isEqual(object, other);\r\n * // => true\r\n *\r\n * object === other;\r\n * // => false\r\n */\r\n function isEqual(value, other) {\r\n return baseIsEqual(value, other);\r\n }\r\n\r\n /**\r\n * This method is like `_.isEqual` except that it accepts `customizer` which\r\n * is invoked to compare values. If `customizer` returns `undefined`, comparisons\r\n * are handled by the method instead. The `customizer` is invoked with up to\r\n * six arguments: (objValue, othValue [, index|key, object, other, stack]).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to compare.\r\n * @param {*} other The other value to compare.\r\n * @param {Function} [customizer] The function to customize comparisons.\r\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\r\n * @example\r\n *\r\n * function isGreeting(value) {\r\n * return /^h(?:i|ello)$/.test(value);\r\n * }\r\n *\r\n * function customizer(objValue, othValue) {\r\n * if (isGreeting(objValue) && isGreeting(othValue)) {\r\n * return true;\r\n * }\r\n * }\r\n *\r\n * var array = ['hello', 'goodbye'];\r\n * var other = ['hi', 'goodbye'];\r\n *\r\n * _.isEqualWith(array, other, customizer);\r\n * // => true\r\n */\r\n function isEqualWith(value, other, customizer) {\r\n customizer = typeof customizer == 'function' ? customizer : undefined;\r\n var result = customizer ? customizer(value, other) : undefined;\r\n return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;\r\n }\r\n\r\n /**\r\n * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,\r\n * `SyntaxError`, `TypeError`, or `URIError` object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is an error object, else `false`.\r\n * @example\r\n *\r\n * _.isError(new Error);\r\n * // => true\r\n *\r\n * _.isError(Error);\r\n * // => false\r\n */\r\n function isError(value) {\r\n if (!isObjectLike(value)) {\r\n return false;\r\n }\r\n var tag = baseGetTag(value);\r\n return tag == errorTag || tag == domExcTag ||\r\n (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));\r\n }\r\n\r\n /**\r\n * Checks if `value` is a finite primitive number.\r\n *\r\n * **Note:** This method is based on\r\n * [`Number.isFinite`](https://mdn.io/Number/isFinite).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.\r\n * @example\r\n *\r\n * _.isFinite(3);\r\n * // => true\r\n *\r\n * _.isFinite(Number.MIN_VALUE);\r\n * // => true\r\n *\r\n * _.isFinite(Infinity);\r\n * // => false\r\n *\r\n * _.isFinite('3');\r\n * // => false\r\n */\r\n function isFinite(value) {\r\n return typeof value == 'number' && nativeIsFinite(value);\r\n }\r\n\r\n /**\r\n * Checks if `value` is classified as a `Function` object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a function, else `false`.\r\n * @example\r\n *\r\n * _.isFunction(_);\r\n * // => true\r\n *\r\n * _.isFunction(/abc/);\r\n * // => false\r\n */\r\n function isFunction(value) {\r\n if (!isObject(value)) {\r\n return false;\r\n }\r\n // The use of `Object#toString` avoids issues with the `typeof` operator\r\n // in Safari 9 which returns 'object' for typed arrays and other constructors.\r\n var tag = baseGetTag(value);\r\n return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;\r\n }\r\n\r\n /**\r\n * Checks if `value` is an integer.\r\n *\r\n * **Note:** This method is based on\r\n * [`Number.isInteger`](https://mdn.io/Number/isInteger).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is an integer, else `false`.\r\n * @example\r\n *\r\n * _.isInteger(3);\r\n * // => true\r\n *\r\n * _.isInteger(Number.MIN_VALUE);\r\n * // => false\r\n *\r\n * _.isInteger(Infinity);\r\n * // => false\r\n *\r\n * _.isInteger('3');\r\n * // => false\r\n */\r\n function isInteger(value) {\r\n return typeof value == 'number' && value == toInteger(value);\r\n }\r\n\r\n /**\r\n * Checks if `value` is a valid array-like length.\r\n *\r\n * **Note:** This method is loosely based on\r\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.\r\n * @example\r\n *\r\n * _.isLength(3);\r\n * // => true\r\n *\r\n * _.isLength(Number.MIN_VALUE);\r\n * // => false\r\n *\r\n * _.isLength(Infinity);\r\n * // => false\r\n *\r\n * _.isLength('3');\r\n * // => false\r\n */\r\n function isLength(value) {\r\n return typeof value == 'number' &&\r\n value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\r\n }\r\n\r\n /**\r\n * Checks if `value` is the\r\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\r\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\r\n * @example\r\n *\r\n * _.isObject({});\r\n * // => true\r\n *\r\n * _.isObject([1, 2, 3]);\r\n * // => true\r\n *\r\n * _.isObject(_.noop);\r\n * // => true\r\n *\r\n * _.isObject(null);\r\n * // => false\r\n */\r\n function isObject(value) {\r\n var type = typeof value;\r\n return value != null && (type == 'object' || type == 'function');\r\n }\r\n\r\n /**\r\n * Checks if `value` is object-like. A value is object-like if it's not `null`\r\n * and has a `typeof` result of \"object\".\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\r\n * @example\r\n *\r\n * _.isObjectLike({});\r\n * // => true\r\n *\r\n * _.isObjectLike([1, 2, 3]);\r\n * // => true\r\n *\r\n * _.isObjectLike(_.noop);\r\n * // => false\r\n *\r\n * _.isObjectLike(null);\r\n * // => false\r\n */\r\n function isObjectLike(value) {\r\n return value != null && typeof value == 'object';\r\n }\r\n\r\n /**\r\n * Checks if `value` is classified as a `Map` object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.3.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a map, else `false`.\r\n * @example\r\n *\r\n * _.isMap(new Map);\r\n * // => true\r\n *\r\n * _.isMap(new WeakMap);\r\n * // => false\r\n */\r\n var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;\r\n\r\n /**\r\n * Performs a partial deep comparison between `object` and `source` to\r\n * determine if `object` contains equivalent property values.\r\n *\r\n * **Note:** This method is equivalent to `_.matches` when `source` is\r\n * partially applied.\r\n *\r\n * Partial comparisons will match empty array and empty object `source`\r\n * values against any array or object value, respectively. See `_.isEqual`\r\n * for a list of supported value comparisons.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Lang\r\n * @param {Object} object The object to inspect.\r\n * @param {Object} source The object of property values to match.\r\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\r\n * @example\r\n *\r\n * var object = { 'a': 1, 'b': 2 };\r\n *\r\n * _.isMatch(object, { 'b': 2 });\r\n * // => true\r\n *\r\n * _.isMatch(object, { 'b': 1 });\r\n * // => false\r\n */\r\n function isMatch(object, source) {\r\n return object === source || baseIsMatch(object, source, getMatchData(source));\r\n }\r\n\r\n /**\r\n * This method is like `_.isMatch` except that it accepts `customizer` which\r\n * is invoked to compare values. If `customizer` returns `undefined`, comparisons\r\n * are handled by the method instead. The `customizer` is invoked with five\r\n * arguments: (objValue, srcValue, index|key, object, source).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {Object} object The object to inspect.\r\n * @param {Object} source The object of property values to match.\r\n * @param {Function} [customizer] The function to customize comparisons.\r\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\r\n * @example\r\n *\r\n * function isGreeting(value) {\r\n * return /^h(?:i|ello)$/.test(value);\r\n * }\r\n *\r\n * function customizer(objValue, srcValue) {\r\n * if (isGreeting(objValue) && isGreeting(srcValue)) {\r\n * return true;\r\n * }\r\n * }\r\n *\r\n * var object = { 'greeting': 'hello' };\r\n * var source = { 'greeting': 'hi' };\r\n *\r\n * _.isMatchWith(object, source, customizer);\r\n * // => true\r\n */\r\n function isMatchWith(object, source, customizer) {\r\n customizer = typeof customizer == 'function' ? customizer : undefined;\r\n return baseIsMatch(object, source, getMatchData(source), customizer);\r\n }\r\n\r\n /**\r\n * Checks if `value` is `NaN`.\r\n *\r\n * **Note:** This method is based on\r\n * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as\r\n * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for\r\n * `undefined` and other non-number values.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\r\n * @example\r\n *\r\n * _.isNaN(NaN);\r\n * // => true\r\n *\r\n * _.isNaN(new Number(NaN));\r\n * // => true\r\n *\r\n * isNaN(undefined);\r\n * // => true\r\n *\r\n * _.isNaN(undefined);\r\n * // => false\r\n */\r\n function isNaN(value) {\r\n // An `NaN` primitive is the only value that is not equal to itself.\r\n // Perform the `toStringTag` check first to avoid errors with some\r\n // ActiveX objects in IE.\r\n return isNumber(value) && value != +value;\r\n }\r\n\r\n /**\r\n * Checks if `value` is a pristine native function.\r\n *\r\n * **Note:** This method can't reliably detect native functions in the presence\r\n * of the core-js package because core-js circumvents this kind of detection.\r\n * Despite multiple requests, the core-js maintainer has made it clear: any\r\n * attempt to fix the detection will be obstructed. As a result, we're left\r\n * with little choice but to throw an error. Unfortunately, this also affects\r\n * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),\r\n * which rely on core-js.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a native function,\r\n * else `false`.\r\n * @example\r\n *\r\n * _.isNative(Array.prototype.push);\r\n * // => true\r\n *\r\n * _.isNative(_);\r\n * // => false\r\n */\r\n function isNative(value) {\r\n if (isMaskable(value)) {\r\n throw new Error(CORE_ERROR_TEXT);\r\n }\r\n return baseIsNative(value);\r\n }\r\n\r\n /**\r\n * Checks if `value` is `null`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is `null`, else `false`.\r\n * @example\r\n *\r\n * _.isNull(null);\r\n * // => true\r\n *\r\n * _.isNull(void 0);\r\n * // => false\r\n */\r\n function isNull(value) {\r\n return value === null;\r\n }\r\n\r\n /**\r\n * Checks if `value` is `null` or `undefined`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is nullish, else `false`.\r\n * @example\r\n *\r\n * _.isNil(null);\r\n * // => true\r\n *\r\n * _.isNil(void 0);\r\n * // => true\r\n *\r\n * _.isNil(NaN);\r\n * // => false\r\n */\r\n function isNil(value) {\r\n return value == null;\r\n }\r\n\r\n /**\r\n * Checks if `value` is classified as a `Number` primitive or object.\r\n *\r\n * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are\r\n * classified as numbers, use the `_.isFinite` method.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a number, else `false`.\r\n * @example\r\n *\r\n * _.isNumber(3);\r\n * // => true\r\n *\r\n * _.isNumber(Number.MIN_VALUE);\r\n * // => true\r\n *\r\n * _.isNumber(Infinity);\r\n * // => true\r\n *\r\n * _.isNumber('3');\r\n * // => false\r\n */\r\n function isNumber(value) {\r\n return typeof value == 'number' ||\r\n (isObjectLike(value) && baseGetTag(value) == numberTag);\r\n }\r\n\r\n /**\r\n * Checks if `value` is a plain object, that is, an object created by the\r\n * `Object` constructor or one with a `[[Prototype]]` of `null`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.8.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.\r\n * @example\r\n *\r\n * function Foo() {\r\n * this.a = 1;\r\n * }\r\n *\r\n * _.isPlainObject(new Foo);\r\n * // => false\r\n *\r\n * _.isPlainObject([1, 2, 3]);\r\n * // => false\r\n *\r\n * _.isPlainObject({ 'x': 0, 'y': 0 });\r\n * // => true\r\n *\r\n * _.isPlainObject(Object.create(null));\r\n * // => true\r\n */\r\n function isPlainObject(value) {\r\n if (!isObjectLike(value) || baseGetTag(value) != objectTag) {\r\n return false;\r\n }\r\n var proto = getPrototype(value);\r\n if (proto === null) {\r\n return true;\r\n }\r\n var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\r\n return typeof Ctor == 'function' && Ctor instanceof Ctor &&\r\n funcToString.call(Ctor) == objectCtorString;\r\n }\r\n\r\n /**\r\n * Checks if `value` is classified as a `RegExp` object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.1.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\r\n * @example\r\n *\r\n * _.isRegExp(/abc/);\r\n * // => true\r\n *\r\n * _.isRegExp('/abc/');\r\n * // => false\r\n */\r\n var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;\r\n\r\n /**\r\n * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754\r\n * double precision number which isn't the result of a rounded unsafe integer.\r\n *\r\n * **Note:** This method is based on\r\n * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.\r\n * @example\r\n *\r\n * _.isSafeInteger(3);\r\n * // => true\r\n *\r\n * _.isSafeInteger(Number.MIN_VALUE);\r\n * // => false\r\n *\r\n * _.isSafeInteger(Infinity);\r\n * // => false\r\n *\r\n * _.isSafeInteger('3');\r\n * // => false\r\n */\r\n function isSafeInteger(value) {\r\n return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;\r\n }\r\n\r\n /**\r\n * Checks if `value` is classified as a `Set` object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.3.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a set, else `false`.\r\n * @example\r\n *\r\n * _.isSet(new Set);\r\n * // => true\r\n *\r\n * _.isSet(new WeakSet);\r\n * // => false\r\n */\r\n var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;\r\n\r\n /**\r\n * Checks if `value` is classified as a `String` primitive or object.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a string, else `false`.\r\n * @example\r\n *\r\n * _.isString('abc');\r\n * // => true\r\n *\r\n * _.isString(1);\r\n * // => false\r\n */\r\n function isString(value) {\r\n return typeof value == 'string' ||\r\n (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);\r\n }\r\n\r\n /**\r\n * Checks if `value` is classified as a `Symbol` primitive or object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\r\n * @example\r\n *\r\n * _.isSymbol(Symbol.iterator);\r\n * // => true\r\n *\r\n * _.isSymbol('abc');\r\n * // => false\r\n */\r\n function isSymbol(value) {\r\n return typeof value == 'symbol' ||\r\n (isObjectLike(value) && baseGetTag(value) == symbolTag);\r\n }\r\n\r\n /**\r\n * Checks if `value` is classified as a typed array.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\r\n * @example\r\n *\r\n * _.isTypedArray(new Uint8Array);\r\n * // => true\r\n *\r\n * _.isTypedArray([]);\r\n * // => false\r\n */\r\n var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;\r\n\r\n /**\r\n * Checks if `value` is `undefined`.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.\r\n * @example\r\n *\r\n * _.isUndefined(void 0);\r\n * // => true\r\n *\r\n * _.isUndefined(null);\r\n * // => false\r\n */\r\n function isUndefined(value) {\r\n return value === undefined;\r\n }\r\n\r\n /**\r\n * Checks if `value` is classified as a `WeakMap` object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.3.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.\r\n * @example\r\n *\r\n * _.isWeakMap(new WeakMap);\r\n * // => true\r\n *\r\n * _.isWeakMap(new Map);\r\n * // => false\r\n */\r\n function isWeakMap(value) {\r\n return isObjectLike(value) && getTag(value) == weakMapTag;\r\n }\r\n\r\n /**\r\n * Checks if `value` is classified as a `WeakSet` object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.3.0\r\n * @category Lang\r\n * @param {*} value The value to check.\r\n * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.\r\n * @example\r\n *\r\n * _.isWeakSet(new WeakSet);\r\n * // => true\r\n *\r\n * _.isWeakSet(new Set);\r\n * // => false\r\n */\r\n function isWeakSet(value) {\r\n return isObjectLike(value) && baseGetTag(value) == weakSetTag;\r\n }\r\n\r\n /**\r\n * Checks if `value` is less than `other`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.9.0\r\n * @category Lang\r\n * @param {*} value The value to compare.\r\n * @param {*} other The other value to compare.\r\n * @returns {boolean} Returns `true` if `value` is less than `other`,\r\n * else `false`.\r\n * @see _.gt\r\n * @example\r\n *\r\n * _.lt(1, 3);\r\n * // => true\r\n *\r\n * _.lt(3, 3);\r\n * // => false\r\n *\r\n * _.lt(3, 1);\r\n * // => false\r\n */\r\n var lt = createRelationalOperation(baseLt);\r\n\r\n /**\r\n * Checks if `value` is less than or equal to `other`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.9.0\r\n * @category Lang\r\n * @param {*} value The value to compare.\r\n * @param {*} other The other value to compare.\r\n * @returns {boolean} Returns `true` if `value` is less than or equal to\r\n * `other`, else `false`.\r\n * @see _.gte\r\n * @example\r\n *\r\n * _.lte(1, 3);\r\n * // => true\r\n *\r\n * _.lte(3, 3);\r\n * // => true\r\n *\r\n * _.lte(3, 1);\r\n * // => false\r\n */\r\n var lte = createRelationalOperation(function(value, other) {\r\n return value <= other;\r\n });\r\n\r\n /**\r\n * Converts `value` to an array.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Lang\r\n * @param {*} value The value to convert.\r\n * @returns {Array} Returns the converted array.\r\n * @example\r\n *\r\n * _.toArray({ 'a': 1, 'b': 2 });\r\n * // => [1, 2]\r\n *\r\n * _.toArray('abc');\r\n * // => ['a', 'b', 'c']\r\n *\r\n * _.toArray(1);\r\n * // => []\r\n *\r\n * _.toArray(null);\r\n * // => []\r\n */\r\n function toArray(value) {\r\n if (!value) {\r\n return [];\r\n }\r\n if (isArrayLike(value)) {\r\n return isString(value) ? stringToArray(value) : copyArray(value);\r\n }\r\n if (symIterator && value[symIterator]) {\r\n return iteratorToArray(value[symIterator]());\r\n }\r\n var tag = getTag(value),\r\n func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);\r\n\r\n return func(value);\r\n }\r\n\r\n /**\r\n * Converts `value` to a finite number.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.12.0\r\n * @category Lang\r\n * @param {*} value The value to convert.\r\n * @returns {number} Returns the converted number.\r\n * @example\r\n *\r\n * _.toFinite(3.2);\r\n * // => 3.2\r\n *\r\n * _.toFinite(Number.MIN_VALUE);\r\n * // => 5e-324\r\n *\r\n * _.toFinite(Infinity);\r\n * // => 1.7976931348623157e+308\r\n *\r\n * _.toFinite('3.2');\r\n * // => 3.2\r\n */\r\n function toFinite(value) {\r\n if (!value) {\r\n return value === 0 ? value : 0;\r\n }\r\n value = toNumber(value);\r\n if (value === INFINITY || value === -INFINITY) {\r\n var sign = (value < 0 ? -1 : 1);\r\n return sign * MAX_INTEGER;\r\n }\r\n return value === value ? value : 0;\r\n }\r\n\r\n /**\r\n * Converts `value` to an integer.\r\n *\r\n * **Note:** This method is loosely based on\r\n * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to convert.\r\n * @returns {number} Returns the converted integer.\r\n * @example\r\n *\r\n * _.toInteger(3.2);\r\n * // => 3\r\n *\r\n * _.toInteger(Number.MIN_VALUE);\r\n * // => 0\r\n *\r\n * _.toInteger(Infinity);\r\n * // => 1.7976931348623157e+308\r\n *\r\n * _.toInteger('3.2');\r\n * // => 3\r\n */\r\n function toInteger(value) {\r\n var result = toFinite(value),\r\n remainder = result % 1;\r\n\r\n return result === result ? (remainder ? result - remainder : result) : 0;\r\n }\r\n\r\n /**\r\n * Converts `value` to an integer suitable for use as the length of an\r\n * array-like object.\r\n *\r\n * **Note:** This method is based on\r\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to convert.\r\n * @returns {number} Returns the converted integer.\r\n * @example\r\n *\r\n * _.toLength(3.2);\r\n * // => 3\r\n *\r\n * _.toLength(Number.MIN_VALUE);\r\n * // => 0\r\n *\r\n * _.toLength(Infinity);\r\n * // => 4294967295\r\n *\r\n * _.toLength('3.2');\r\n * // => 3\r\n */\r\n function toLength(value) {\r\n return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;\r\n }\r\n\r\n /**\r\n * Converts `value` to a number.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to process.\r\n * @returns {number} Returns the number.\r\n * @example\r\n *\r\n * _.toNumber(3.2);\r\n * // => 3.2\r\n *\r\n * _.toNumber(Number.MIN_VALUE);\r\n * // => 5e-324\r\n *\r\n * _.toNumber(Infinity);\r\n * // => Infinity\r\n *\r\n * _.toNumber('3.2');\r\n * // => 3.2\r\n */\r\n function toNumber(value) {\r\n if (typeof value == 'number') {\r\n return value;\r\n }\r\n if (isSymbol(value)) {\r\n return NAN;\r\n }\r\n if (isObject(value)) {\r\n var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\r\n value = isObject(other) ? (other + '') : other;\r\n }\r\n if (typeof value != 'string') {\r\n return value === 0 ? value : +value;\r\n }\r\n value = baseTrim(value);\r\n var isBinary = reIsBinary.test(value);\r\n return (isBinary || reIsOctal.test(value))\r\n ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\r\n : (reIsBadHex.test(value) ? NAN : +value);\r\n }\r\n\r\n /**\r\n * Converts `value` to a plain object flattening inherited enumerable string\r\n * keyed properties of `value` to own properties of the plain object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Lang\r\n * @param {*} value The value to convert.\r\n * @returns {Object} Returns the converted plain object.\r\n * @example\r\n *\r\n * function Foo() {\r\n * this.b = 2;\r\n * }\r\n *\r\n * Foo.prototype.c = 3;\r\n *\r\n * _.assign({ 'a': 1 }, new Foo);\r\n * // => { 'a': 1, 'b': 2 }\r\n *\r\n * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));\r\n * // => { 'a': 1, 'b': 2, 'c': 3 }\r\n */\r\n function toPlainObject(value) {\r\n return copyObject(value, keysIn(value));\r\n }\r\n\r\n /**\r\n * Converts `value` to a safe integer. A safe integer can be compared and\r\n * represented correctly.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to convert.\r\n * @returns {number} Returns the converted integer.\r\n * @example\r\n *\r\n * _.toSafeInteger(3.2);\r\n * // => 3\r\n *\r\n * _.toSafeInteger(Number.MIN_VALUE);\r\n * // => 0\r\n *\r\n * _.toSafeInteger(Infinity);\r\n * // => 9007199254740991\r\n *\r\n * _.toSafeInteger('3.2');\r\n * // => 3\r\n */\r\n function toSafeInteger(value) {\r\n return value\r\n ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)\r\n : (value === 0 ? value : 0);\r\n }\r\n\r\n /**\r\n * Converts `value` to a string. An empty string is returned for `null`\r\n * and `undefined` values. The sign of `-0` is preserved.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Lang\r\n * @param {*} value The value to convert.\r\n * @returns {string} Returns the converted string.\r\n * @example\r\n *\r\n * _.toString(null);\r\n * // => ''\r\n *\r\n * _.toString(-0);\r\n * // => '-0'\r\n *\r\n * _.toString([1, 2, 3]);\r\n * // => '1,2,3'\r\n */\r\n function toString(value) {\r\n return value == null ? '' : baseToString(value);\r\n }\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Assigns own enumerable string keyed properties of source objects to the\r\n * destination object. Source objects are applied from left to right.\r\n * Subsequent sources overwrite property assignments of previous sources.\r\n *\r\n * **Note:** This method mutates `object` and is loosely based on\r\n * [`Object.assign`](https://mdn.io/Object/assign).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.10.0\r\n * @category Object\r\n * @param {Object} object The destination object.\r\n * @param {...Object} [sources] The source objects.\r\n * @returns {Object} Returns `object`.\r\n * @see _.assignIn\r\n * @example\r\n *\r\n * function Foo() {\r\n * this.a = 1;\r\n * }\r\n *\r\n * function Bar() {\r\n * this.c = 3;\r\n * }\r\n *\r\n * Foo.prototype.b = 2;\r\n * Bar.prototype.d = 4;\r\n *\r\n * _.assign({ 'a': 0 }, new Foo, new Bar);\r\n * // => { 'a': 1, 'c': 3 }\r\n */\r\n var assign = createAssigner(function(object, source) {\r\n if (isPrototype(source) || isArrayLike(source)) {\r\n copyObject(source, keys(source), object);\r\n return;\r\n }\r\n for (var key in source) {\r\n if (hasOwnProperty.call(source, key)) {\r\n assignValue(object, key, source[key]);\r\n }\r\n }\r\n });\r\n\r\n /**\r\n * This method is like `_.assign` except that it iterates over own and\r\n * inherited source properties.\r\n *\r\n * **Note:** This method mutates `object`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @alias extend\r\n * @category Object\r\n * @param {Object} object The destination object.\r\n * @param {...Object} [sources] The source objects.\r\n * @returns {Object} Returns `object`.\r\n * @see _.assign\r\n * @example\r\n *\r\n * function Foo() {\r\n * this.a = 1;\r\n * }\r\n *\r\n * function Bar() {\r\n * this.c = 3;\r\n * }\r\n *\r\n * Foo.prototype.b = 2;\r\n * Bar.prototype.d = 4;\r\n *\r\n * _.assignIn({ 'a': 0 }, new Foo, new Bar);\r\n * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }\r\n */\r\n var assignIn = createAssigner(function(object, source) {\r\n copyObject(source, keysIn(source), object);\r\n });\r\n\r\n /**\r\n * This method is like `_.assignIn` except that it accepts `customizer`\r\n * which is invoked to produce the assigned values. If `customizer` returns\r\n * `undefined`, assignment is handled by the method instead. The `customizer`\r\n * is invoked with five arguments: (objValue, srcValue, key, object, source).\r\n *\r\n * **Note:** This method mutates `object`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @alias extendWith\r\n * @category Object\r\n * @param {Object} object The destination object.\r\n * @param {...Object} sources The source objects.\r\n * @param {Function} [customizer] The function to customize assigned values.\r\n * @returns {Object} Returns `object`.\r\n * @see _.assignWith\r\n * @example\r\n *\r\n * function customizer(objValue, srcValue) {\r\n * return _.isUndefined(objValue) ? srcValue : objValue;\r\n * }\r\n *\r\n * var defaults = _.partialRight(_.assignInWith, customizer);\r\n *\r\n * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\r\n * // => { 'a': 1, 'b': 2 }\r\n */\r\n var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {\r\n copyObject(source, keysIn(source), object, customizer);\r\n });\r\n\r\n /**\r\n * This method is like `_.assign` except that it accepts `customizer`\r\n * which is invoked to produce the assigned values. If `customizer` returns\r\n * `undefined`, assignment is handled by the method instead. The `customizer`\r\n * is invoked with five arguments: (objValue, srcValue, key, object, source).\r\n *\r\n * **Note:** This method mutates `object`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Object\r\n * @param {Object} object The destination object.\r\n * @param {...Object} sources The source objects.\r\n * @param {Function} [customizer] The function to customize assigned values.\r\n * @returns {Object} Returns `object`.\r\n * @see _.assignInWith\r\n * @example\r\n *\r\n * function customizer(objValue, srcValue) {\r\n * return _.isUndefined(objValue) ? srcValue : objValue;\r\n * }\r\n *\r\n * var defaults = _.partialRight(_.assignWith, customizer);\r\n *\r\n * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\r\n * // => { 'a': 1, 'b': 2 }\r\n */\r\n var assignWith = createAssigner(function(object, source, srcIndex, customizer) {\r\n copyObject(source, keys(source), object, customizer);\r\n });\r\n\r\n /**\r\n * Creates an array of values corresponding to `paths` of `object`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 1.0.0\r\n * @category Object\r\n * @param {Object} object The object to iterate over.\r\n * @param {...(string|string[])} [paths] The property paths to pick.\r\n * @returns {Array} Returns the picked values.\r\n * @example\r\n *\r\n * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\r\n *\r\n * _.at(object, ['a[0].b.c', 'a[1]']);\r\n * // => [3, 4]\r\n */\r\n var at = flatRest(baseAt);\r\n\r\n /**\r\n * Creates an object that inherits from the `prototype` object. If a\r\n * `properties` object is given, its own enumerable string keyed properties\r\n * are assigned to the created object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.3.0\r\n * @category Object\r\n * @param {Object} prototype The object to inherit from.\r\n * @param {Object} [properties] The properties to assign to the object.\r\n * @returns {Object} Returns the new object.\r\n * @example\r\n *\r\n * function Shape() {\r\n * this.x = 0;\r\n * this.y = 0;\r\n * }\r\n *\r\n * function Circle() {\r\n * Shape.call(this);\r\n * }\r\n *\r\n * Circle.prototype = _.create(Shape.prototype, {\r\n * 'constructor': Circle\r\n * });\r\n *\r\n * var circle = new Circle;\r\n * circle instanceof Circle;\r\n * // => true\r\n *\r\n * circle instanceof Shape;\r\n * // => true\r\n */\r\n function create(prototype, properties) {\r\n var result = baseCreate(prototype);\r\n return properties == null ? result : baseAssign(result, properties);\r\n }\r\n\r\n /**\r\n * Assigns own and inherited enumerable string keyed properties of source\r\n * objects to the destination object for all destination properties that\r\n * resolve to `undefined`. Source objects are applied from left to right.\r\n * Once a property is set, additional values of the same property are ignored.\r\n *\r\n * **Note:** This method mutates `object`.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Object\r\n * @param {Object} object The destination object.\r\n * @param {...Object} [sources] The source objects.\r\n * @returns {Object} Returns `object`.\r\n * @see _.defaultsDeep\r\n * @example\r\n *\r\n * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\r\n * // => { 'a': 1, 'b': 2 }\r\n */\r\n var defaults = baseRest(function(object, sources) {\r\n object = Object(object);\r\n\r\n var index = -1;\r\n var length = sources.length;\r\n var guard = length > 2 ? sources[2] : undefined;\r\n\r\n if (guard && isIterateeCall(sources[0], sources[1], guard)) {\r\n length = 1;\r\n }\r\n\r\n while (++index < length) {\r\n var source = sources[index];\r\n var props = keysIn(source);\r\n var propsIndex = -1;\r\n var propsLength = props.length;\r\n\r\n while (++propsIndex < propsLength) {\r\n var key = props[propsIndex];\r\n var value = object[key];\r\n\r\n if (value === undefined ||\r\n (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {\r\n object[key] = source[key];\r\n }\r\n }\r\n }\r\n\r\n return object;\r\n });\r\n\r\n /**\r\n * This method is like `_.defaults` except that it recursively assigns\r\n * default properties.\r\n *\r\n * **Note:** This method mutates `object`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.10.0\r\n * @category Object\r\n * @param {Object} object The destination object.\r\n * @param {...Object} [sources] The source objects.\r\n * @returns {Object} Returns `object`.\r\n * @see _.defaults\r\n * @example\r\n *\r\n * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });\r\n * // => { 'a': { 'b': 2, 'c': 3 } }\r\n */\r\n var defaultsDeep = baseRest(function(args) {\r\n args.push(undefined, customDefaultsMerge);\r\n return apply(mergeWith, undefined, args);\r\n });\r\n\r\n /**\r\n * This method is like `_.find` except that it returns the key of the first\r\n * element `predicate` returns truthy for instead of the element itself.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 1.1.0\r\n * @category Object\r\n * @param {Object} object The object to inspect.\r\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\r\n * @returns {string|undefined} Returns the key of the matched element,\r\n * else `undefined`.\r\n * @example\r\n *\r\n * var users = {\r\n * 'barney': { 'age': 36, 'active': true },\r\n * 'fred': { 'age': 40, 'active': false },\r\n * 'pebbles': { 'age': 1, 'active': true }\r\n * };\r\n *\r\n * _.findKey(users, function(o) { return o.age < 40; });\r\n * // => 'barney' (iteration order is not guaranteed)\r\n *\r\n * // The `_.matches` iteratee shorthand.\r\n * _.findKey(users, { 'age': 1, 'active': true });\r\n * // => 'pebbles'\r\n *\r\n * // The `_.matchesProperty` iteratee shorthand.\r\n * _.findKey(users, ['active', false]);\r\n * // => 'fred'\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.findKey(users, 'active');\r\n * // => 'barney'\r\n */\r\n function findKey(object, predicate) {\r\n return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);\r\n }\r\n\r\n /**\r\n * This method is like `_.findKey` except that it iterates over elements of\r\n * a collection in the opposite order.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.0.0\r\n * @category Object\r\n * @param {Object} object The object to inspect.\r\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\r\n * @returns {string|undefined} Returns the key of the matched element,\r\n * else `undefined`.\r\n * @example\r\n *\r\n * var users = {\r\n * 'barney': { 'age': 36, 'active': true },\r\n * 'fred': { 'age': 40, 'active': false },\r\n * 'pebbles': { 'age': 1, 'active': true }\r\n * };\r\n *\r\n * _.findLastKey(users, function(o) { return o.age < 40; });\r\n * // => returns 'pebbles' assuming `_.findKey` returns 'barney'\r\n *\r\n * // The `_.matches` iteratee shorthand.\r\n * _.findLastKey(users, { 'age': 36, 'active': true });\r\n * // => 'barney'\r\n *\r\n * // The `_.matchesProperty` iteratee shorthand.\r\n * _.findLastKey(users, ['active', false]);\r\n * // => 'fred'\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.findLastKey(users, 'active');\r\n * // => 'pebbles'\r\n */\r\n function findLastKey(object, predicate) {\r\n return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);\r\n }\r\n\r\n /**\r\n * Iterates over own and inherited enumerable string keyed properties of an\r\n * object and invokes `iteratee` for each property. The iteratee is invoked\r\n * with three arguments: (value, key, object). Iteratee functions may exit\r\n * iteration early by explicitly returning `false`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.3.0\r\n * @category Object\r\n * @param {Object} object The object to iterate over.\r\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\r\n * @returns {Object} Returns `object`.\r\n * @see _.forInRight\r\n * @example\r\n *\r\n * function Foo() {\r\n * this.a = 1;\r\n * this.b = 2;\r\n * }\r\n *\r\n * Foo.prototype.c = 3;\r\n *\r\n * _.forIn(new Foo, function(value, key) {\r\n * console.log(key);\r\n * });\r\n * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).\r\n */\r\n function forIn(object, iteratee) {\r\n return object == null\r\n ? object\r\n : baseFor(object, getIteratee(iteratee, 3), keysIn);\r\n }\r\n\r\n /**\r\n * This method is like `_.forIn` except that it iterates over properties of\r\n * `object` in the opposite order.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.0.0\r\n * @category Object\r\n * @param {Object} object The object to iterate over.\r\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\r\n * @returns {Object} Returns `object`.\r\n * @see _.forIn\r\n * @example\r\n *\r\n * function Foo() {\r\n * this.a = 1;\r\n * this.b = 2;\r\n * }\r\n *\r\n * Foo.prototype.c = 3;\r\n *\r\n * _.forInRight(new Foo, function(value, key) {\r\n * console.log(key);\r\n * });\r\n * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.\r\n */\r\n function forInRight(object, iteratee) {\r\n return object == null\r\n ? object\r\n : baseForRight(object, getIteratee(iteratee, 3), keysIn);\r\n }\r\n\r\n /**\r\n * Iterates over own enumerable string keyed properties of an object and\r\n * invokes `iteratee` for each property. The iteratee is invoked with three\r\n * arguments: (value, key, object). Iteratee functions may exit iteration\r\n * early by explicitly returning `false`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.3.0\r\n * @category Object\r\n * @param {Object} object The object to iterate over.\r\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\r\n * @returns {Object} Returns `object`.\r\n * @see _.forOwnRight\r\n * @example\r\n *\r\n * function Foo() {\r\n * this.a = 1;\r\n * this.b = 2;\r\n * }\r\n *\r\n * Foo.prototype.c = 3;\r\n *\r\n * _.forOwn(new Foo, function(value, key) {\r\n * console.log(key);\r\n * });\r\n * // => Logs 'a' then 'b' (iteration order is not guaranteed).\r\n */\r\n function forOwn(object, iteratee) {\r\n return object && baseForOwn(object, getIteratee(iteratee, 3));\r\n }\r\n\r\n /**\r\n * This method is like `_.forOwn` except that it iterates over properties of\r\n * `object` in the opposite order.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.0.0\r\n * @category Object\r\n * @param {Object} object The object to iterate over.\r\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\r\n * @returns {Object} Returns `object`.\r\n * @see _.forOwn\r\n * @example\r\n *\r\n * function Foo() {\r\n * this.a = 1;\r\n * this.b = 2;\r\n * }\r\n *\r\n * Foo.prototype.c = 3;\r\n *\r\n * _.forOwnRight(new Foo, function(value, key) {\r\n * console.log(key);\r\n * });\r\n * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.\r\n */\r\n function forOwnRight(object, iteratee) {\r\n return object && baseForOwnRight(object, getIteratee(iteratee, 3));\r\n }\r\n\r\n /**\r\n * Creates an array of function property names from own enumerable properties\r\n * of `object`.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Object\r\n * @param {Object} object The object to inspect.\r\n * @returns {Array} Returns the function names.\r\n * @see _.functionsIn\r\n * @example\r\n *\r\n * function Foo() {\r\n * this.a = _.constant('a');\r\n * this.b = _.constant('b');\r\n * }\r\n *\r\n * Foo.prototype.c = _.constant('c');\r\n *\r\n * _.functions(new Foo);\r\n * // => ['a', 'b']\r\n */\r\n function functions(object) {\r\n return object == null ? [] : baseFunctions(object, keys(object));\r\n }\r\n\r\n /**\r\n * Creates an array of function property names from own and inherited\r\n * enumerable properties of `object`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Object\r\n * @param {Object} object The object to inspect.\r\n * @returns {Array} Returns the function names.\r\n * @see _.functions\r\n * @example\r\n *\r\n * function Foo() {\r\n * this.a = _.constant('a');\r\n * this.b = _.constant('b');\r\n * }\r\n *\r\n * Foo.prototype.c = _.constant('c');\r\n *\r\n * _.functionsIn(new Foo);\r\n * // => ['a', 'b', 'c']\r\n */\r\n function functionsIn(object) {\r\n return object == null ? [] : baseFunctions(object, keysIn(object));\r\n }\r\n\r\n /**\r\n * Gets the value at `path` of `object`. If the resolved value is\r\n * `undefined`, the `defaultValue` is returned in its place.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.7.0\r\n * @category Object\r\n * @param {Object} object The object to query.\r\n * @param {Array|string} path The path of the property to get.\r\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\r\n * @returns {*} Returns the resolved value.\r\n * @example\r\n *\r\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\r\n *\r\n * _.get(object, 'a[0].b.c');\r\n * // => 3\r\n *\r\n * _.get(object, ['a', '0', 'b', 'c']);\r\n * // => 3\r\n *\r\n * _.get(object, 'a.b.c', 'default');\r\n * // => 'default'\r\n */\r\n function get(object, path, defaultValue) {\r\n var result = object == null ? undefined : baseGet(object, path);\r\n return result === undefined ? defaultValue : result;\r\n }\r\n\r\n /**\r\n * Checks if `path` is a direct property of `object`.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Object\r\n * @param {Object} object The object to query.\r\n * @param {Array|string} path The path to check.\r\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\r\n * @example\r\n *\r\n * var object = { 'a': { 'b': 2 } };\r\n * var other = _.create({ 'a': _.create({ 'b': 2 }) });\r\n *\r\n * _.has(object, 'a');\r\n * // => true\r\n *\r\n * _.has(object, 'a.b');\r\n * // => true\r\n *\r\n * _.has(object, ['a', 'b']);\r\n * // => true\r\n *\r\n * _.has(other, 'a');\r\n * // => false\r\n */\r\n function has(object, path) {\r\n return object != null && hasPath(object, path, baseHas);\r\n }\r\n\r\n /**\r\n * Checks if `path` is a direct or inherited property of `object`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Object\r\n * @param {Object} object The object to query.\r\n * @param {Array|string} path The path to check.\r\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\r\n * @example\r\n *\r\n * var object = _.create({ 'a': _.create({ 'b': 2 }) });\r\n *\r\n * _.hasIn(object, 'a');\r\n * // => true\r\n *\r\n * _.hasIn(object, 'a.b');\r\n * // => true\r\n *\r\n * _.hasIn(object, ['a', 'b']);\r\n * // => true\r\n *\r\n * _.hasIn(object, 'b');\r\n * // => false\r\n */\r\n function hasIn(object, path) {\r\n return object != null && hasPath(object, path, baseHasIn);\r\n }\r\n\r\n /**\r\n * Creates an object composed of the inverted keys and values of `object`.\r\n * If `object` contains duplicate values, subsequent values overwrite\r\n * property assignments of previous values.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.7.0\r\n * @category Object\r\n * @param {Object} object The object to invert.\r\n * @returns {Object} Returns the new inverted object.\r\n * @example\r\n *\r\n * var object = { 'a': 1, 'b': 2, 'c': 1 };\r\n *\r\n * _.invert(object);\r\n * // => { '1': 'c', '2': 'b' }\r\n */\r\n var invert = createInverter(function(result, value, key) {\r\n if (value != null &&\r\n typeof value.toString != 'function') {\r\n value = nativeObjectToString.call(value);\r\n }\r\n\r\n result[value] = key;\r\n }, constant(identity));\r\n\r\n /**\r\n * This method is like `_.invert` except that the inverted object is generated\r\n * from the results of running each element of `object` thru `iteratee`. The\r\n * corresponding inverted value of each inverted key is an array of keys\r\n * responsible for generating the inverted value. The iteratee is invoked\r\n * with one argument: (value).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.1.0\r\n * @category Object\r\n * @param {Object} object The object to invert.\r\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\r\n * @returns {Object} Returns the new inverted object.\r\n * @example\r\n *\r\n * var object = { 'a': 1, 'b': 2, 'c': 1 };\r\n *\r\n * _.invertBy(object);\r\n * // => { '1': ['a', 'c'], '2': ['b'] }\r\n *\r\n * _.invertBy(object, function(value) {\r\n * return 'group' + value;\r\n * });\r\n * // => { 'group1': ['a', 'c'], 'group2': ['b'] }\r\n */\r\n var invertBy = createInverter(function(result, value, key) {\r\n if (value != null &&\r\n typeof value.toString != 'function') {\r\n value = nativeObjectToString.call(value);\r\n }\r\n\r\n if (hasOwnProperty.call(result, value)) {\r\n result[value].push(key);\r\n } else {\r\n result[value] = [key];\r\n }\r\n }, getIteratee);\r\n\r\n /**\r\n * Invokes the method at `path` of `object`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Object\r\n * @param {Object} object The object to query.\r\n * @param {Array|string} path The path of the method to invoke.\r\n * @param {...*} [args] The arguments to invoke the method with.\r\n * @returns {*} Returns the result of the invoked method.\r\n * @example\r\n *\r\n * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };\r\n *\r\n * _.invoke(object, 'a[0].b.c.slice', 1, 3);\r\n * // => [2, 3]\r\n */\r\n var invoke = baseRest(baseInvoke);\r\n\r\n /**\r\n * Creates an array of the own enumerable property names of `object`.\r\n *\r\n * **Note:** Non-object values are coerced to objects. See the\r\n * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\r\n * for more details.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Object\r\n * @param {Object} object The object to query.\r\n * @returns {Array} Returns the array of property names.\r\n * @example\r\n *\r\n * function Foo() {\r\n * this.a = 1;\r\n * this.b = 2;\r\n * }\r\n *\r\n * Foo.prototype.c = 3;\r\n *\r\n * _.keys(new Foo);\r\n * // => ['a', 'b'] (iteration order is not guaranteed)\r\n *\r\n * _.keys('hi');\r\n * // => ['0', '1']\r\n */\r\n function keys(object) {\r\n return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\r\n }\r\n\r\n /**\r\n * Creates an array of the own and inherited enumerable property names of `object`.\r\n *\r\n * **Note:** Non-object values are coerced to objects.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Object\r\n * @param {Object} object The object to query.\r\n * @returns {Array} Returns the array of property names.\r\n * @example\r\n *\r\n * function Foo() {\r\n * this.a = 1;\r\n * this.b = 2;\r\n * }\r\n *\r\n * Foo.prototype.c = 3;\r\n *\r\n * _.keysIn(new Foo);\r\n * // => ['a', 'b', 'c'] (iteration order is not guaranteed)\r\n */\r\n function keysIn(object) {\r\n return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);\r\n }\r\n\r\n /**\r\n * The opposite of `_.mapValues`; this method creates an object with the\r\n * same values as `object` and keys generated by running each own enumerable\r\n * string keyed property of `object` thru `iteratee`. The iteratee is invoked\r\n * with three arguments: (value, key, object).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.8.0\r\n * @category Object\r\n * @param {Object} object The object to iterate over.\r\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\r\n * @returns {Object} Returns the new mapped object.\r\n * @see _.mapValues\r\n * @example\r\n *\r\n * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {\r\n * return key + value;\r\n * });\r\n * // => { 'a1': 1, 'b2': 2 }\r\n */\r\n function mapKeys(object, iteratee) {\r\n var result = {};\r\n iteratee = getIteratee(iteratee, 3);\r\n\r\n baseForOwn(object, function(value, key, object) {\r\n baseAssignValue(result, iteratee(value, key, object), value);\r\n });\r\n return result;\r\n }\r\n\r\n /**\r\n * Creates an object with the same keys as `object` and values generated\r\n * by running each own enumerable string keyed property of `object` thru\r\n * `iteratee`. The iteratee is invoked with three arguments:\r\n * (value, key, object).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.4.0\r\n * @category Object\r\n * @param {Object} object The object to iterate over.\r\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\r\n * @returns {Object} Returns the new mapped object.\r\n * @see _.mapKeys\r\n * @example\r\n *\r\n * var users = {\r\n * 'fred': { 'user': 'fred', 'age': 40 },\r\n * 'pebbles': { 'user': 'pebbles', 'age': 1 }\r\n * };\r\n *\r\n * _.mapValues(users, function(o) { return o.age; });\r\n * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.mapValues(users, 'age');\r\n * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\r\n */\r\n function mapValues(object, iteratee) {\r\n var result = {};\r\n iteratee = getIteratee(iteratee, 3);\r\n\r\n baseForOwn(object, function(value, key, object) {\r\n baseAssignValue(result, key, iteratee(value, key, object));\r\n });\r\n return result;\r\n }\r\n\r\n /**\r\n * This method is like `_.assign` except that it recursively merges own and\r\n * inherited enumerable string keyed properties of source objects into the\r\n * destination object. Source properties that resolve to `undefined` are\r\n * skipped if a destination value exists. Array and plain object properties\r\n * are merged recursively. Other objects and value types are overridden by\r\n * assignment. Source objects are applied from left to right. Subsequent\r\n * sources overwrite property assignments of previous sources.\r\n *\r\n * **Note:** This method mutates `object`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.5.0\r\n * @category Object\r\n * @param {Object} object The destination object.\r\n * @param {...Object} [sources] The source objects.\r\n * @returns {Object} Returns `object`.\r\n * @example\r\n *\r\n * var object = {\r\n * 'a': [{ 'b': 2 }, { 'd': 4 }]\r\n * };\r\n *\r\n * var other = {\r\n * 'a': [{ 'c': 3 }, { 'e': 5 }]\r\n * };\r\n *\r\n * _.merge(object, other);\r\n * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }\r\n */\r\n var merge = createAssigner(function(object, source, srcIndex) {\r\n baseMerge(object, source, srcIndex);\r\n });\r\n\r\n /**\r\n * This method is like `_.merge` except that it accepts `customizer` which\r\n * is invoked to produce the merged values of the destination and source\r\n * properties. If `customizer` returns `undefined`, merging is handled by the\r\n * method instead. The `customizer` is invoked with six arguments:\r\n * (objValue, srcValue, key, object, source, stack).\r\n *\r\n * **Note:** This method mutates `object`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Object\r\n * @param {Object} object The destination object.\r\n * @param {...Object} sources The source objects.\r\n * @param {Function} customizer The function to customize assigned values.\r\n * @returns {Object} Returns `object`.\r\n * @example\r\n *\r\n * function customizer(objValue, srcValue) {\r\n * if (_.isArray(objValue)) {\r\n * return objValue.concat(srcValue);\r\n * }\r\n * }\r\n *\r\n * var object = { 'a': [1], 'b': [2] };\r\n * var other = { 'a': [3], 'b': [4] };\r\n *\r\n * _.mergeWith(object, other, customizer);\r\n * // => { 'a': [1, 3], 'b': [2, 4] }\r\n */\r\n var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {\r\n baseMerge(object, source, srcIndex, customizer);\r\n });\r\n\r\n /**\r\n * The opposite of `_.pick`; this method creates an object composed of the\r\n * own and inherited enumerable property paths of `object` that are not omitted.\r\n *\r\n * **Note:** This method is considerably slower than `_.pick`.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Object\r\n * @param {Object} object The source object.\r\n * @param {...(string|string[])} [paths] The property paths to omit.\r\n * @returns {Object} Returns the new object.\r\n * @example\r\n *\r\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\r\n *\r\n * _.omit(object, ['a', 'c']);\r\n * // => { 'b': '2' }\r\n */\r\n var omit = flatRest(function(object, paths) {\r\n var result = {};\r\n if (object == null) {\r\n return result;\r\n }\r\n var isDeep = false;\r\n paths = arrayMap(paths, function(path) {\r\n path = castPath(path, object);\r\n isDeep || (isDeep = path.length > 1);\r\n return path;\r\n });\r\n copyObject(object, getAllKeysIn(object), result);\r\n if (isDeep) {\r\n result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);\r\n }\r\n var length = paths.length;\r\n while (length--) {\r\n baseUnset(result, paths[length]);\r\n }\r\n return result;\r\n });\r\n\r\n /**\r\n * The opposite of `_.pickBy`; this method creates an object composed of\r\n * the own and inherited enumerable string keyed properties of `object` that\r\n * `predicate` doesn't return truthy for. The predicate is invoked with two\r\n * arguments: (value, key).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Object\r\n * @param {Object} object The source object.\r\n * @param {Function} [predicate=_.identity] The function invoked per property.\r\n * @returns {Object} Returns the new object.\r\n * @example\r\n *\r\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\r\n *\r\n * _.omitBy(object, _.isNumber);\r\n * // => { 'b': '2' }\r\n */\r\n function omitBy(object, predicate) {\r\n return pickBy(object, negate(getIteratee(predicate)));\r\n }\r\n\r\n /**\r\n * Creates an object composed of the picked `object` properties.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Object\r\n * @param {Object} object The source object.\r\n * @param {...(string|string[])} [paths] The property paths to pick.\r\n * @returns {Object} Returns the new object.\r\n * @example\r\n *\r\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\r\n *\r\n * _.pick(object, ['a', 'c']);\r\n * // => { 'a': 1, 'c': 3 }\r\n */\r\n var pick = flatRest(function(object, paths) {\r\n return object == null ? {} : basePick(object, paths);\r\n });\r\n\r\n /**\r\n * Creates an object composed of the `object` properties `predicate` returns\r\n * truthy for. The predicate is invoked with two arguments: (value, key).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Object\r\n * @param {Object} object The source object.\r\n * @param {Function} [predicate=_.identity] The function invoked per property.\r\n * @returns {Object} Returns the new object.\r\n * @example\r\n *\r\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\r\n *\r\n * _.pickBy(object, _.isNumber);\r\n * // => { 'a': 1, 'c': 3 }\r\n */\r\n function pickBy(object, predicate) {\r\n if (object == null) {\r\n return {};\r\n }\r\n var props = arrayMap(getAllKeysIn(object), function(prop) {\r\n return [prop];\r\n });\r\n predicate = getIteratee(predicate);\r\n return basePickBy(object, props, function(value, path) {\r\n return predicate(value, path[0]);\r\n });\r\n }\r\n\r\n /**\r\n * This method is like `_.get` except that if the resolved value is a\r\n * function it's invoked with the `this` binding of its parent object and\r\n * its result is returned.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Object\r\n * @param {Object} object The object to query.\r\n * @param {Array|string} path The path of the property to resolve.\r\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\r\n * @returns {*} Returns the resolved value.\r\n * @example\r\n *\r\n * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };\r\n *\r\n * _.result(object, 'a[0].b.c1');\r\n * // => 3\r\n *\r\n * _.result(object, 'a[0].b.c2');\r\n * // => 4\r\n *\r\n * _.result(object, 'a[0].b.c3', 'default');\r\n * // => 'default'\r\n *\r\n * _.result(object, 'a[0].b.c3', _.constant('default'));\r\n * // => 'default'\r\n */\r\n function result(object, path, defaultValue) {\r\n path = castPath(path, object);\r\n\r\n var index = -1,\r\n length = path.length;\r\n\r\n // Ensure the loop is entered when path is empty.\r\n if (!length) {\r\n length = 1;\r\n object = undefined;\r\n }\r\n while (++index < length) {\r\n var value = object == null ? undefined : object[toKey(path[index])];\r\n if (value === undefined) {\r\n index = length;\r\n value = defaultValue;\r\n }\r\n object = isFunction(value) ? value.call(object) : value;\r\n }\r\n return object;\r\n }\r\n\r\n /**\r\n * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,\r\n * it's created. Arrays are created for missing index properties while objects\r\n * are created for all other missing properties. Use `_.setWith` to customize\r\n * `path` creation.\r\n *\r\n * **Note:** This method mutates `object`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.7.0\r\n * @category Object\r\n * @param {Object} object The object to modify.\r\n * @param {Array|string} path The path of the property to set.\r\n * @param {*} value The value to set.\r\n * @returns {Object} Returns `object`.\r\n * @example\r\n *\r\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\r\n *\r\n * _.set(object, 'a[0].b.c', 4);\r\n * console.log(object.a[0].b.c);\r\n * // => 4\r\n *\r\n * _.set(object, ['x', '0', 'y', 'z'], 5);\r\n * console.log(object.x[0].y.z);\r\n * // => 5\r\n */\r\n function set(object, path, value) {\r\n return object == null ? object : baseSet(object, path, value);\r\n }\r\n\r\n /**\r\n * This method is like `_.set` except that it accepts `customizer` which is\r\n * invoked to produce the objects of `path`. If `customizer` returns `undefined`\r\n * path creation is handled by the method instead. The `customizer` is invoked\r\n * with three arguments: (nsValue, key, nsObject).\r\n *\r\n * **Note:** This method mutates `object`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Object\r\n * @param {Object} object The object to modify.\r\n * @param {Array|string} path The path of the property to set.\r\n * @param {*} value The value to set.\r\n * @param {Function} [customizer] The function to customize assigned values.\r\n * @returns {Object} Returns `object`.\r\n * @example\r\n *\r\n * var object = {};\r\n *\r\n * _.setWith(object, '[0][1]', 'a', Object);\r\n * // => { '0': { '1': 'a' } }\r\n */\r\n function setWith(object, path, value, customizer) {\r\n customizer = typeof customizer == 'function' ? customizer : undefined;\r\n return object == null ? object : baseSet(object, path, value, customizer);\r\n }\r\n\r\n /**\r\n * Creates an array of own enumerable string keyed-value pairs for `object`\r\n * which can be consumed by `_.fromPairs`. If `object` is a map or set, its\r\n * entries are returned.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @alias entries\r\n * @category Object\r\n * @param {Object} object The object to query.\r\n * @returns {Array} Returns the key-value pairs.\r\n * @example\r\n *\r\n * function Foo() {\r\n * this.a = 1;\r\n * this.b = 2;\r\n * }\r\n *\r\n * Foo.prototype.c = 3;\r\n *\r\n * _.toPairs(new Foo);\r\n * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)\r\n */\r\n var toPairs = createToPairs(keys);\r\n\r\n /**\r\n * Creates an array of own and inherited enumerable string keyed-value pairs\r\n * for `object` which can be consumed by `_.fromPairs`. If `object` is a map\r\n * or set, its entries are returned.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @alias entriesIn\r\n * @category Object\r\n * @param {Object} object The object to query.\r\n * @returns {Array} Returns the key-value pairs.\r\n * @example\r\n *\r\n * function Foo() {\r\n * this.a = 1;\r\n * this.b = 2;\r\n * }\r\n *\r\n * Foo.prototype.c = 3;\r\n *\r\n * _.toPairsIn(new Foo);\r\n * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)\r\n */\r\n var toPairsIn = createToPairs(keysIn);\r\n\r\n /**\r\n * An alternative to `_.reduce`; this method transforms `object` to a new\r\n * `accumulator` object which is the result of running each of its own\r\n * enumerable string keyed properties thru `iteratee`, with each invocation\r\n * potentially mutating the `accumulator` object. If `accumulator` is not\r\n * provided, a new object with the same `[[Prototype]]` will be used. The\r\n * iteratee is invoked with four arguments: (accumulator, value, key, object).\r\n * Iteratee functions may exit iteration early by explicitly returning `false`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 1.3.0\r\n * @category Object\r\n * @param {Object} object The object to iterate over.\r\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\r\n * @param {*} [accumulator] The custom accumulator value.\r\n * @returns {*} Returns the accumulated value.\r\n * @example\r\n *\r\n * _.transform([2, 3, 4], function(result, n) {\r\n * result.push(n *= n);\r\n * return n % 2 == 0;\r\n * }, []);\r\n * // => [4, 9]\r\n *\r\n * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\r\n * (result[value] || (result[value] = [])).push(key);\r\n * }, {});\r\n * // => { '1': ['a', 'c'], '2': ['b'] }\r\n */\r\n function transform(object, iteratee, accumulator) {\r\n var isArr = isArray(object),\r\n isArrLike = isArr || isBuffer(object) || isTypedArray(object);\r\n\r\n iteratee = getIteratee(iteratee, 4);\r\n if (accumulator == null) {\r\n var Ctor = object && object.constructor;\r\n if (isArrLike) {\r\n accumulator = isArr ? new Ctor : [];\r\n }\r\n else if (isObject(object)) {\r\n accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};\r\n }\r\n else {\r\n accumulator = {};\r\n }\r\n }\r\n (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {\r\n return iteratee(accumulator, value, index, object);\r\n });\r\n return accumulator;\r\n }\r\n\r\n /**\r\n * Removes the property at `path` of `object`.\r\n *\r\n * **Note:** This method mutates `object`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Object\r\n * @param {Object} object The object to modify.\r\n * @param {Array|string} path The path of the property to unset.\r\n * @returns {boolean} Returns `true` if the property is deleted, else `false`.\r\n * @example\r\n *\r\n * var object = { 'a': [{ 'b': { 'c': 7 } }] };\r\n * _.unset(object, 'a[0].b.c');\r\n * // => true\r\n *\r\n * console.log(object);\r\n * // => { 'a': [{ 'b': {} }] };\r\n *\r\n * _.unset(object, ['a', '0', 'b', 'c']);\r\n * // => true\r\n *\r\n * console.log(object);\r\n * // => { 'a': [{ 'b': {} }] };\r\n */\r\n function unset(object, path) {\r\n return object == null ? true : baseUnset(object, path);\r\n }\r\n\r\n /**\r\n * This method is like `_.set` except that accepts `updater` to produce the\r\n * value to set. Use `_.updateWith` to customize `path` creation. The `updater`\r\n * is invoked with one argument: (value).\r\n *\r\n * **Note:** This method mutates `object`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.6.0\r\n * @category Object\r\n * @param {Object} object The object to modify.\r\n * @param {Array|string} path The path of the property to set.\r\n * @param {Function} updater The function to produce the updated value.\r\n * @returns {Object} Returns `object`.\r\n * @example\r\n *\r\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\r\n *\r\n * _.update(object, 'a[0].b.c', function(n) { return n * n; });\r\n * console.log(object.a[0].b.c);\r\n * // => 9\r\n *\r\n * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });\r\n * console.log(object.x[0].y.z);\r\n * // => 0\r\n */\r\n function update(object, path, updater) {\r\n return object == null ? object : baseUpdate(object, path, castFunction(updater));\r\n }\r\n\r\n /**\r\n * This method is like `_.update` except that it accepts `customizer` which is\r\n * invoked to produce the objects of `path`. If `customizer` returns `undefined`\r\n * path creation is handled by the method instead. The `customizer` is invoked\r\n * with three arguments: (nsValue, key, nsObject).\r\n *\r\n * **Note:** This method mutates `object`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.6.0\r\n * @category Object\r\n * @param {Object} object The object to modify.\r\n * @param {Array|string} path The path of the property to set.\r\n * @param {Function} updater The function to produce the updated value.\r\n * @param {Function} [customizer] The function to customize assigned values.\r\n * @returns {Object} Returns `object`.\r\n * @example\r\n *\r\n * var object = {};\r\n *\r\n * _.updateWith(object, '[0][1]', _.constant('a'), Object);\r\n * // => { '0': { '1': 'a' } }\r\n */\r\n function updateWith(object, path, updater, customizer) {\r\n customizer = typeof customizer == 'function' ? customizer : undefined;\r\n return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);\r\n }\r\n\r\n /**\r\n * Creates an array of the own enumerable string keyed property values of `object`.\r\n *\r\n * **Note:** Non-object values are coerced to objects.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Object\r\n * @param {Object} object The object to query.\r\n * @returns {Array} Returns the array of property values.\r\n * @example\r\n *\r\n * function Foo() {\r\n * this.a = 1;\r\n * this.b = 2;\r\n * }\r\n *\r\n * Foo.prototype.c = 3;\r\n *\r\n * _.values(new Foo);\r\n * // => [1, 2] (iteration order is not guaranteed)\r\n *\r\n * _.values('hi');\r\n * // => ['h', 'i']\r\n */\r\n function values(object) {\r\n return object == null ? [] : baseValues(object, keys(object));\r\n }\r\n\r\n /**\r\n * Creates an array of the own and inherited enumerable string keyed property\r\n * values of `object`.\r\n *\r\n * **Note:** Non-object values are coerced to objects.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Object\r\n * @param {Object} object The object to query.\r\n * @returns {Array} Returns the array of property values.\r\n * @example\r\n *\r\n * function Foo() {\r\n * this.a = 1;\r\n * this.b = 2;\r\n * }\r\n *\r\n * Foo.prototype.c = 3;\r\n *\r\n * _.valuesIn(new Foo);\r\n * // => [1, 2, 3] (iteration order is not guaranteed)\r\n */\r\n function valuesIn(object) {\r\n return object == null ? [] : baseValues(object, keysIn(object));\r\n }\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Clamps `number` within the inclusive `lower` and `upper` bounds.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Number\r\n * @param {number} number The number to clamp.\r\n * @param {number} [lower] The lower bound.\r\n * @param {number} upper The upper bound.\r\n * @returns {number} Returns the clamped number.\r\n * @example\r\n *\r\n * _.clamp(-10, -5, 5);\r\n * // => -5\r\n *\r\n * _.clamp(10, -5, 5);\r\n * // => 5\r\n */\r\n function clamp(number, lower, upper) {\r\n if (upper === undefined) {\r\n upper = lower;\r\n lower = undefined;\r\n }\r\n if (upper !== undefined) {\r\n upper = toNumber(upper);\r\n upper = upper === upper ? upper : 0;\r\n }\r\n if (lower !== undefined) {\r\n lower = toNumber(lower);\r\n lower = lower === lower ? lower : 0;\r\n }\r\n return baseClamp(toNumber(number), lower, upper);\r\n }\r\n\r\n /**\r\n * Checks if `n` is between `start` and up to, but not including, `end`. If\r\n * `end` is not specified, it's set to `start` with `start` then set to `0`.\r\n * If `start` is greater than `end` the params are swapped to support\r\n * negative ranges.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.3.0\r\n * @category Number\r\n * @param {number} number The number to check.\r\n * @param {number} [start=0] The start of the range.\r\n * @param {number} end The end of the range.\r\n * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\r\n * @see _.range, _.rangeRight\r\n * @example\r\n *\r\n * _.inRange(3, 2, 4);\r\n * // => true\r\n *\r\n * _.inRange(4, 8);\r\n * // => true\r\n *\r\n * _.inRange(4, 2);\r\n * // => false\r\n *\r\n * _.inRange(2, 2);\r\n * // => false\r\n *\r\n * _.inRange(1.2, 2);\r\n * // => true\r\n *\r\n * _.inRange(5.2, 4);\r\n * // => false\r\n *\r\n * _.inRange(-3, -2, -6);\r\n * // => true\r\n */\r\n function inRange(number, start, end) {\r\n start = toFinite(start);\r\n if (end === undefined) {\r\n end = start;\r\n start = 0;\r\n } else {\r\n end = toFinite(end);\r\n }\r\n number = toNumber(number);\r\n return baseInRange(number, start, end);\r\n }\r\n\r\n /**\r\n * Produces a random number between the inclusive `lower` and `upper` bounds.\r\n * If only one argument is provided a number between `0` and the given number\r\n * is returned. If `floating` is `true`, or either `lower` or `upper` are\r\n * floats, a floating-point number is returned instead of an integer.\r\n *\r\n * **Note:** JavaScript follows the IEEE-754 standard for resolving\r\n * floating-point values which can produce unexpected results.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.7.0\r\n * @category Number\r\n * @param {number} [lower=0] The lower bound.\r\n * @param {number} [upper=1] The upper bound.\r\n * @param {boolean} [floating] Specify returning a floating-point number.\r\n * @returns {number} Returns the random number.\r\n * @example\r\n *\r\n * _.random(0, 5);\r\n * // => an integer between 0 and 5\r\n *\r\n * _.random(5);\r\n * // => also an integer between 0 and 5\r\n *\r\n * _.random(5, true);\r\n * // => a floating-point number between 0 and 5\r\n *\r\n * _.random(1.2, 5.2);\r\n * // => a floating-point number between 1.2 and 5.2\r\n */\r\n function random(lower, upper, floating) {\r\n if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {\r\n upper = floating = undefined;\r\n }\r\n if (floating === undefined) {\r\n if (typeof upper == 'boolean') {\r\n floating = upper;\r\n upper = undefined;\r\n }\r\n else if (typeof lower == 'boolean') {\r\n floating = lower;\r\n lower = undefined;\r\n }\r\n }\r\n if (lower === undefined && upper === undefined) {\r\n lower = 0;\r\n upper = 1;\r\n }\r\n else {\r\n lower = toFinite(lower);\r\n if (upper === undefined) {\r\n upper = lower;\r\n lower = 0;\r\n } else {\r\n upper = toFinite(upper);\r\n }\r\n }\r\n if (lower > upper) {\r\n var temp = lower;\r\n lower = upper;\r\n upper = temp;\r\n }\r\n if (floating || lower % 1 || upper % 1) {\r\n var rand = nativeRandom();\r\n return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);\r\n }\r\n return baseRandom(lower, upper);\r\n }\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to convert.\r\n * @returns {string} Returns the camel cased string.\r\n * @example\r\n *\r\n * _.camelCase('Foo Bar');\r\n * // => 'fooBar'\r\n *\r\n * _.camelCase('--foo-bar--');\r\n * // => 'fooBar'\r\n *\r\n * _.camelCase('__FOO_BAR__');\r\n * // => 'fooBar'\r\n */\r\n var camelCase = createCompounder(function(result, word, index) {\r\n word = word.toLowerCase();\r\n return result + (index ? capitalize(word) : word);\r\n });\r\n\r\n /**\r\n * Converts the first character of `string` to upper case and the remaining\r\n * to lower case.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to capitalize.\r\n * @returns {string} Returns the capitalized string.\r\n * @example\r\n *\r\n * _.capitalize('FRED');\r\n * // => 'Fred'\r\n */\r\n function capitalize(string) {\r\n return upperFirst(toString(string).toLowerCase());\r\n }\r\n\r\n /**\r\n * Deburrs `string` by converting\r\n * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)\r\n * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)\r\n * letters to basic Latin letters and removing\r\n * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to deburr.\r\n * @returns {string} Returns the deburred string.\r\n * @example\r\n *\r\n * _.deburr('déjà vu');\r\n * // => 'deja vu'\r\n */\r\n function deburr(string) {\r\n string = toString(string);\r\n return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');\r\n }\r\n\r\n /**\r\n * Checks if `string` ends with the given target string.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to inspect.\r\n * @param {string} [target] The string to search for.\r\n * @param {number} [position=string.length] The position to search up to.\r\n * @returns {boolean} Returns `true` if `string` ends with `target`,\r\n * else `false`.\r\n * @example\r\n *\r\n * _.endsWith('abc', 'c');\r\n * // => true\r\n *\r\n * _.endsWith('abc', 'b');\r\n * // => false\r\n *\r\n * _.endsWith('abc', 'b', 2);\r\n * // => true\r\n */\r\n function endsWith(string, target, position) {\r\n string = toString(string);\r\n target = baseToString(target);\r\n\r\n var length = string.length;\r\n position = position === undefined\r\n ? length\r\n : baseClamp(toInteger(position), 0, length);\r\n\r\n var end = position;\r\n position -= target.length;\r\n return position >= 0 && string.slice(position, end) == target;\r\n }\r\n\r\n /**\r\n * Converts the characters \"&\", \"<\", \">\", '\"', and \"'\" in `string` to their\r\n * corresponding HTML entities.\r\n *\r\n * **Note:** No other characters are escaped. To escape additional\r\n * characters use a third-party library like [_he_](https://mths.be/he).\r\n *\r\n * Though the \">\" character is escaped for symmetry, characters like\r\n * \">\" and \"/\" don't need escaping in HTML and have no special meaning\r\n * unless they're part of a tag or unquoted attribute value. See\r\n * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)\r\n * (under \"semi-related fun fact\") for more details.\r\n *\r\n * When working with HTML you should always\r\n * [quote attribute values](http://wonko.com/post/html-escaping) to reduce\r\n * XSS vectors.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category String\r\n * @param {string} [string=''] The string to escape.\r\n * @returns {string} Returns the escaped string.\r\n * @example\r\n *\r\n * _.escape('fred, barney, & pebbles');\r\n * // => 'fred, barney, &amp; pebbles'\r\n */\r\n function escape(string) {\r\n string = toString(string);\r\n return (string && reHasUnescapedHtml.test(string))\r\n ? string.replace(reUnescapedHtml, escapeHtmlChar)\r\n : string;\r\n }\r\n\r\n /**\r\n * Escapes the `RegExp` special characters \"^\", \"$\", \"\\\", \".\", \"*\", \"+\",\r\n * \"?\", \"(\", \")\", \"[\", \"]\", \"{\", \"}\", and \"|\" in `string`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to escape.\r\n * @returns {string} Returns the escaped string.\r\n * @example\r\n *\r\n * _.escapeRegExp('[lodash](https://lodash.com/)');\r\n * // => '\\[lodash\\]\\(https://lodash\\.com/\\)'\r\n */\r\n function escapeRegExp(string) {\r\n string = toString(string);\r\n return (string && reHasRegExpChar.test(string))\r\n ? string.replace(reRegExpChar, '\\\\$&')\r\n : string;\r\n }\r\n\r\n /**\r\n * Converts `string` to\r\n * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to convert.\r\n * @returns {string} Returns the kebab cased string.\r\n * @example\r\n *\r\n * _.kebabCase('Foo Bar');\r\n * // => 'foo-bar'\r\n *\r\n * _.kebabCase('fooBar');\r\n * // => 'foo-bar'\r\n *\r\n * _.kebabCase('__FOO_BAR__');\r\n * // => 'foo-bar'\r\n */\r\n var kebabCase = createCompounder(function(result, word, index) {\r\n return result + (index ? '-' : '') + word.toLowerCase();\r\n });\r\n\r\n /**\r\n * Converts `string`, as space separated words, to lower case.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to convert.\r\n * @returns {string} Returns the lower cased string.\r\n * @example\r\n *\r\n * _.lowerCase('--Foo-Bar--');\r\n * // => 'foo bar'\r\n *\r\n * _.lowerCase('fooBar');\r\n * // => 'foo bar'\r\n *\r\n * _.lowerCase('__FOO_BAR__');\r\n * // => 'foo bar'\r\n */\r\n var lowerCase = createCompounder(function(result, word, index) {\r\n return result + (index ? ' ' : '') + word.toLowerCase();\r\n });\r\n\r\n /**\r\n * Converts the first character of `string` to lower case.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to convert.\r\n * @returns {string} Returns the converted string.\r\n * @example\r\n *\r\n * _.lowerFirst('Fred');\r\n * // => 'fred'\r\n *\r\n * _.lowerFirst('FRED');\r\n * // => 'fRED'\r\n */\r\n var lowerFirst = createCaseFirst('toLowerCase');\r\n\r\n /**\r\n * Pads `string` on the left and right sides if it's shorter than `length`.\r\n * Padding characters are truncated if they can't be evenly divided by `length`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to pad.\r\n * @param {number} [length=0] The padding length.\r\n * @param {string} [chars=' '] The string used as padding.\r\n * @returns {string} Returns the padded string.\r\n * @example\r\n *\r\n * _.pad('abc', 8);\r\n * // => ' abc '\r\n *\r\n * _.pad('abc', 8, '_-');\r\n * // => '_-abc_-_'\r\n *\r\n * _.pad('abc', 3);\r\n * // => 'abc'\r\n */\r\n function pad(string, length, chars) {\r\n string = toString(string);\r\n length = toInteger(length);\r\n\r\n var strLength = length ? stringSize(string) : 0;\r\n if (!length || strLength >= length) {\r\n return string;\r\n }\r\n var mid = (length - strLength) / 2;\r\n return (\r\n createPadding(nativeFloor(mid), chars) +\r\n string +\r\n createPadding(nativeCeil(mid), chars)\r\n );\r\n }\r\n\r\n /**\r\n * Pads `string` on the right side if it's shorter than `length`. Padding\r\n * characters are truncated if they exceed `length`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to pad.\r\n * @param {number} [length=0] The padding length.\r\n * @param {string} [chars=' '] The string used as padding.\r\n * @returns {string} Returns the padded string.\r\n * @example\r\n *\r\n * _.padEnd('abc', 6);\r\n * // => 'abc '\r\n *\r\n * _.padEnd('abc', 6, '_-');\r\n * // => 'abc_-_'\r\n *\r\n * _.padEnd('abc', 3);\r\n * // => 'abc'\r\n */\r\n function padEnd(string, length, chars) {\r\n string = toString(string);\r\n length = toInteger(length);\r\n\r\n var strLength = length ? stringSize(string) : 0;\r\n return (length && strLength < length)\r\n ? (string + createPadding(length - strLength, chars))\r\n : string;\r\n }\r\n\r\n /**\r\n * Pads `string` on the left side if it's shorter than `length`. Padding\r\n * characters are truncated if they exceed `length`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to pad.\r\n * @param {number} [length=0] The padding length.\r\n * @param {string} [chars=' '] The string used as padding.\r\n * @returns {string} Returns the padded string.\r\n * @example\r\n *\r\n * _.padStart('abc', 6);\r\n * // => ' abc'\r\n *\r\n * _.padStart('abc', 6, '_-');\r\n * // => '_-_abc'\r\n *\r\n * _.padStart('abc', 3);\r\n * // => 'abc'\r\n */\r\n function padStart(string, length, chars) {\r\n string = toString(string);\r\n length = toInteger(length);\r\n\r\n var strLength = length ? stringSize(string) : 0;\r\n return (length && strLength < length)\r\n ? (createPadding(length - strLength, chars) + string)\r\n : string;\r\n }\r\n\r\n /**\r\n * Converts `string` to an integer of the specified radix. If `radix` is\r\n * `undefined` or `0`, a `radix` of `10` is used unless `value` is a\r\n * hexadecimal, in which case a `radix` of `16` is used.\r\n *\r\n * **Note:** This method aligns with the\r\n * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 1.1.0\r\n * @category String\r\n * @param {string} string The string to convert.\r\n * @param {number} [radix=10] The radix to interpret `value` by.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {number} Returns the converted integer.\r\n * @example\r\n *\r\n * _.parseInt('08');\r\n * // => 8\r\n *\r\n * _.map(['6', '08', '10'], _.parseInt);\r\n * // => [6, 8, 10]\r\n */\r\n function parseInt(string, radix, guard) {\r\n if (guard || radix == null) {\r\n radix = 0;\r\n } else if (radix) {\r\n radix = +radix;\r\n }\r\n return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);\r\n }\r\n\r\n /**\r\n * Repeats the given string `n` times.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to repeat.\r\n * @param {number} [n=1] The number of times to repeat the string.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {string} Returns the repeated string.\r\n * @example\r\n *\r\n * _.repeat('*', 3);\r\n * // => '***'\r\n *\r\n * _.repeat('abc', 2);\r\n * // => 'abcabc'\r\n *\r\n * _.repeat('abc', 0);\r\n * // => ''\r\n */\r\n function repeat(string, n, guard) {\r\n if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {\r\n n = 1;\r\n } else {\r\n n = toInteger(n);\r\n }\r\n return baseRepeat(toString(string), n);\r\n }\r\n\r\n /**\r\n * Replaces matches for `pattern` in `string` with `replacement`.\r\n *\r\n * **Note:** This method is based on\r\n * [`String#replace`](https://mdn.io/String/replace).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to modify.\r\n * @param {RegExp|string} pattern The pattern to replace.\r\n * @param {Function|string} replacement The match replacement.\r\n * @returns {string} Returns the modified string.\r\n * @example\r\n *\r\n * _.replace('Hi Fred', 'Fred', 'Barney');\r\n * // => 'Hi Barney'\r\n */\r\n function replace() {\r\n var args = arguments,\r\n string = toString(args[0]);\r\n\r\n return args.length < 3 ? string : string.replace(args[1], args[2]);\r\n }\r\n\r\n /**\r\n * Converts `string` to\r\n * [snake case](https://en.wikipedia.org/wiki/Snake_case).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to convert.\r\n * @returns {string} Returns the snake cased string.\r\n * @example\r\n *\r\n * _.snakeCase('Foo Bar');\r\n * // => 'foo_bar'\r\n *\r\n * _.snakeCase('fooBar');\r\n * // => 'foo_bar'\r\n *\r\n * _.snakeCase('--FOO-BAR--');\r\n * // => 'foo_bar'\r\n */\r\n var snakeCase = createCompounder(function(result, word, index) {\r\n return result + (index ? '_' : '') + word.toLowerCase();\r\n });\r\n\r\n /**\r\n * Splits `string` by `separator`.\r\n *\r\n * **Note:** This method is based on\r\n * [`String#split`](https://mdn.io/String/split).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to split.\r\n * @param {RegExp|string} separator The separator pattern to split by.\r\n * @param {number} [limit] The length to truncate results to.\r\n * @returns {Array} Returns the string segments.\r\n * @example\r\n *\r\n * _.split('a-b-c', '-', 2);\r\n * // => ['a', 'b']\r\n */\r\n function split(string, separator, limit) {\r\n if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {\r\n separator = limit = undefined;\r\n }\r\n limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;\r\n if (!limit) {\r\n return [];\r\n }\r\n string = toString(string);\r\n if (string && (\r\n typeof separator == 'string' ||\r\n (separator != null && !isRegExp(separator))\r\n )) {\r\n separator = baseToString(separator);\r\n if (!separator && hasUnicode(string)) {\r\n return castSlice(stringToArray(string), 0, limit);\r\n }\r\n }\r\n return string.split(separator, limit);\r\n }\r\n\r\n /**\r\n * Converts `string` to\r\n * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.1.0\r\n * @category String\r\n * @param {string} [string=''] The string to convert.\r\n * @returns {string} Returns the start cased string.\r\n * @example\r\n *\r\n * _.startCase('--foo-bar--');\r\n * // => 'Foo Bar'\r\n *\r\n * _.startCase('fooBar');\r\n * // => 'Foo Bar'\r\n *\r\n * _.startCase('__FOO_BAR__');\r\n * // => 'FOO BAR'\r\n */\r\n var startCase = createCompounder(function(result, word, index) {\r\n return result + (index ? ' ' : '') + upperFirst(word);\r\n });\r\n\r\n /**\r\n * Checks if `string` starts with the given target string.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to inspect.\r\n * @param {string} [target] The string to search for.\r\n * @param {number} [position=0] The position to search from.\r\n * @returns {boolean} Returns `true` if `string` starts with `target`,\r\n * else `false`.\r\n * @example\r\n *\r\n * _.startsWith('abc', 'a');\r\n * // => true\r\n *\r\n * _.startsWith('abc', 'b');\r\n * // => false\r\n *\r\n * _.startsWith('abc', 'b', 1);\r\n * // => true\r\n */\r\n function startsWith(string, target, position) {\r\n string = toString(string);\r\n position = position == null\r\n ? 0\r\n : baseClamp(toInteger(position), 0, string.length);\r\n\r\n target = baseToString(target);\r\n return string.slice(position, position + target.length) == target;\r\n }\r\n\r\n /**\r\n * Creates a compiled template function that can interpolate data properties\r\n * in \"interpolate\" delimiters, HTML-escape interpolated data properties in\r\n * \"escape\" delimiters, and execute JavaScript in \"evaluate\" delimiters. Data\r\n * properties may be accessed as free variables in the template. If a setting\r\n * object is given, it takes precedence over `_.templateSettings` values.\r\n *\r\n * **Note:** In the development build `_.template` utilizes\r\n * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)\r\n * for easier debugging.\r\n *\r\n * For more information on precompiling templates see\r\n * [lodash's custom builds documentation](https://lodash.com/custom-builds).\r\n *\r\n * For more information on Chrome extension sandboxes see\r\n * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category String\r\n * @param {string} [string=''] The template string.\r\n * @param {Object} [options={}] The options object.\r\n * @param {RegExp} [options.escape=_.templateSettings.escape]\r\n * The HTML \"escape\" delimiter.\r\n * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]\r\n * The \"evaluate\" delimiter.\r\n * @param {Object} [options.imports=_.templateSettings.imports]\r\n * An object to import into the template as free variables.\r\n * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]\r\n * The \"interpolate\" delimiter.\r\n * @param {string} [options.sourceURL='lodash.templateSources[n]']\r\n * The sourceURL of the compiled template.\r\n * @param {string} [options.variable='obj']\r\n * The data object variable name.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {Function} Returns the compiled template function.\r\n * @example\r\n *\r\n * // Use the \"interpolate\" delimiter to create a compiled template.\r\n * var compiled = _.template('hello <%= user %>!');\r\n * compiled({ 'user': 'fred' });\r\n * // => 'hello fred!'\r\n *\r\n * // Use the HTML \"escape\" delimiter to escape data property values.\r\n * var compiled = _.template('<b><%- value %></b>');\r\n * compiled({ 'value': '<script>' });\r\n * // => '<b>&lt;script&gt;</b>'\r\n *\r\n * // Use the \"evaluate\" delimiter to execute JavaScript and generate HTML.\r\n * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');\r\n * compiled({ 'users': ['fred', 'barney'] });\r\n * // => '<li>fred</li><li>barney</li>'\r\n *\r\n * // Use the internal `print` function in \"evaluate\" delimiters.\r\n * var compiled = _.template('<% print(\"hello \" + user); %>!');\r\n * compiled({ 'user': 'barney' });\r\n * // => 'hello barney!'\r\n *\r\n * // Use the ES template literal delimiter as an \"interpolate\" delimiter.\r\n * // Disable support by replacing the \"interpolate\" delimiter.\r\n * var compiled = _.template('hello ${ user }!');\r\n * compiled({ 'user': 'pebbles' });\r\n * // => 'hello pebbles!'\r\n *\r\n * // Use backslashes to treat delimiters as plain text.\r\n * var compiled = _.template('<%= \"\\\\<%- value %\\\\>\" %>');\r\n * compiled({ 'value': 'ignored' });\r\n * // => '<%- value %>'\r\n *\r\n * // Use the `imports` option to import `jQuery` as `jq`.\r\n * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';\r\n * var compiled = _.template(text, { 'imports': { 'jq': jQuery } });\r\n * compiled({ 'users': ['fred', 'barney'] });\r\n * // => '<li>fred</li><li>barney</li>'\r\n *\r\n * // Use the `sourceURL` option to specify a custom sourceURL for the template.\r\n * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });\r\n * compiled(data);\r\n * // => Find the source of \"greeting.jst\" under the Sources tab or Resources panel of the web inspector.\r\n *\r\n * // Use the `variable` option to ensure a with-statement isn't used in the compiled template.\r\n * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });\r\n * compiled.source;\r\n * // => function(data) {\r\n * // var __t, __p = '';\r\n * // __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';\r\n * // return __p;\r\n * // }\r\n *\r\n * // Use custom template delimiters.\r\n * _.templateSettings.interpolate = /{{([\\s\\S]+?)}}/g;\r\n * var compiled = _.template('hello {{ user }}!');\r\n * compiled({ 'user': 'mustache' });\r\n * // => 'hello mustache!'\r\n *\r\n * // Use the `source` property to inline compiled templates for meaningful\r\n * // line numbers in error messages and stack traces.\r\n * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\\\r\n * var JST = {\\\r\n * \"main\": ' + _.template(mainText).source + '\\\r\n * };\\\r\n * ');\r\n */\r\n function template(string, options, guard) {\r\n // Based on John Resig's `tmpl` implementation\r\n // (http://ejohn.org/blog/javascript-micro-templating/)\r\n // and Laura Doktorova's doT.js (https://github.com/olado/doT).\r\n var settings = lodash.templateSettings;\r\n\r\n if (guard && isIterateeCall(string, options, guard)) {\r\n options = undefined;\r\n }\r\n string = toString(string);\r\n options = assignInWith({}, options, settings, customDefaultsAssignIn);\r\n\r\n var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),\r\n importsKeys = keys(imports),\r\n importsValues = baseValues(imports, importsKeys);\r\n\r\n var isEscaping,\r\n isEvaluating,\r\n index = 0,\r\n interpolate = options.interpolate || reNoMatch,\r\n source = \"__p += '\";\r\n\r\n // Compile the regexp to match each delimiter.\r\n var reDelimiters = RegExp(\r\n (options.escape || reNoMatch).source + '|' +\r\n interpolate.source + '|' +\r\n (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +\r\n (options.evaluate || reNoMatch).source + '|$'\r\n , 'g');\r\n\r\n // Use a sourceURL for easier debugging.\r\n // The sourceURL gets injected into the source that's eval-ed, so be careful\r\n // to normalize all kinds of whitespace, so e.g. newlines (and unicode versions of it) can't sneak in\r\n // and escape the comment, thus injecting code that gets evaled.\r\n var sourceURL = '//# sourceURL=' +\r\n (hasOwnProperty.call(options, 'sourceURL')\r\n ? (options.sourceURL + '').replace(/\\s/g, ' ')\r\n : ('lodash.templateSources[' + (++templateCounter) + ']')\r\n ) + '\\n';\r\n\r\n string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {\r\n interpolateValue || (interpolateValue = esTemplateValue);\r\n\r\n // Escape characters that can't be included in string literals.\r\n source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar);\r\n\r\n // Replace delimiters with snippets.\r\n if (escapeValue) {\r\n isEscaping = true;\r\n source += \"' +\\n__e(\" + escapeValue + \") +\\n'\";\r\n }\r\n if (evaluateValue) {\r\n isEvaluating = true;\r\n source += \"';\\n\" + evaluateValue + \";\\n__p += '\";\r\n }\r\n if (interpolateValue) {\r\n source += \"' +\\n((__t = (\" + interpolateValue + \")) == null ? '' : __t) +\\n'\";\r\n }\r\n index = offset + match.length;\r\n\r\n // The JS engine embedded in Adobe products needs `match` returned in\r\n // order to produce the correct `offset` value.\r\n return match;\r\n });\r\n\r\n source += \"';\\n\";\r\n\r\n // If `variable` is not specified wrap a with-statement around the generated\r\n // code to add the data object to the top of the scope chain.\r\n var variable = hasOwnProperty.call(options, 'variable') && options.variable;\r\n if (!variable) {\r\n source = 'with (obj) {\\n' + source + '\\n}\\n';\r\n }\r\n // Throw an error if a forbidden character was found in `variable`, to prevent\r\n // potential command injection attacks.\r\n else if (reForbiddenIdentifierChars.test(variable)) {\r\n throw new Error(INVALID_TEMPL_VAR_ERROR_TEXT);\r\n }\r\n\r\n // Cleanup code by stripping empty strings.\r\n source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)\r\n .replace(reEmptyStringMiddle, '$1')\r\n .replace(reEmptyStringTrailing, '$1;');\r\n\r\n // Frame code as the function body.\r\n source = 'function(' + (variable || 'obj') + ') {\\n' +\r\n (variable\r\n ? ''\r\n : 'obj || (obj = {});\\n'\r\n ) +\r\n \"var __t, __p = ''\" +\r\n (isEscaping\r\n ? ', __e = _.escape'\r\n : ''\r\n ) +\r\n (isEvaluating\r\n ? ', __j = Array.prototype.join;\\n' +\r\n \"function print() { __p += __j.call(arguments, '') }\\n\"\r\n : ';\\n'\r\n ) +\r\n source +\r\n 'return __p\\n}';\r\n\r\n var result = attempt(function() {\r\n return Function(importsKeys, sourceURL + 'return ' + source)\r\n .apply(undefined, importsValues);\r\n });\r\n\r\n // Provide the compiled function's source by its `toString` method or\r\n // the `source` property as a convenience for inlining compiled templates.\r\n result.source = source;\r\n if (isError(result)) {\r\n throw result;\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Converts `string`, as a whole, to lower case just like\r\n * [String#toLowerCase](https://mdn.io/toLowerCase).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to convert.\r\n * @returns {string} Returns the lower cased string.\r\n * @example\r\n *\r\n * _.toLower('--Foo-Bar--');\r\n * // => '--foo-bar--'\r\n *\r\n * _.toLower('fooBar');\r\n * // => 'foobar'\r\n *\r\n * _.toLower('__FOO_BAR__');\r\n * // => '__foo_bar__'\r\n */\r\n function toLower(value) {\r\n return toString(value).toLowerCase();\r\n }\r\n\r\n /**\r\n * Converts `string`, as a whole, to upper case just like\r\n * [String#toUpperCase](https://mdn.io/toUpperCase).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to convert.\r\n * @returns {string} Returns the upper cased string.\r\n * @example\r\n *\r\n * _.toUpper('--foo-bar--');\r\n * // => '--FOO-BAR--'\r\n *\r\n * _.toUpper('fooBar');\r\n * // => 'FOOBAR'\r\n *\r\n * _.toUpper('__foo_bar__');\r\n * // => '__FOO_BAR__'\r\n */\r\n function toUpper(value) {\r\n return toString(value).toUpperCase();\r\n }\r\n\r\n /**\r\n * Removes leading and trailing whitespace or specified characters from `string`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to trim.\r\n * @param {string} [chars=whitespace] The characters to trim.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {string} Returns the trimmed string.\r\n * @example\r\n *\r\n * _.trim(' abc ');\r\n * // => 'abc'\r\n *\r\n * _.trim('-_-abc-_-', '_-');\r\n * // => 'abc'\r\n *\r\n * _.map([' foo ', ' bar '], _.trim);\r\n * // => ['foo', 'bar']\r\n */\r\n function trim(string, chars, guard) {\r\n string = toString(string);\r\n if (string && (guard || chars === undefined)) {\r\n return baseTrim(string);\r\n }\r\n if (!string || !(chars = baseToString(chars))) {\r\n return string;\r\n }\r\n var strSymbols = stringToArray(string),\r\n chrSymbols = stringToArray(chars),\r\n start = charsStartIndex(strSymbols, chrSymbols),\r\n end = charsEndIndex(strSymbols, chrSymbols) + 1;\r\n\r\n return castSlice(strSymbols, start, end).join('');\r\n }\r\n\r\n /**\r\n * Removes trailing whitespace or specified characters from `string`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to trim.\r\n * @param {string} [chars=whitespace] The characters to trim.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {string} Returns the trimmed string.\r\n * @example\r\n *\r\n * _.trimEnd(' abc ');\r\n * // => ' abc'\r\n *\r\n * _.trimEnd('-_-abc-_-', '_-');\r\n * // => '-_-abc'\r\n */\r\n function trimEnd(string, chars, guard) {\r\n string = toString(string);\r\n if (string && (guard || chars === undefined)) {\r\n return string.slice(0, trimmedEndIndex(string) + 1);\r\n }\r\n if (!string || !(chars = baseToString(chars))) {\r\n return string;\r\n }\r\n var strSymbols = stringToArray(string),\r\n end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;\r\n\r\n return castSlice(strSymbols, 0, end).join('');\r\n }\r\n\r\n /**\r\n * Removes leading whitespace or specified characters from `string`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to trim.\r\n * @param {string} [chars=whitespace] The characters to trim.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {string} Returns the trimmed string.\r\n * @example\r\n *\r\n * _.trimStart(' abc ');\r\n * // => 'abc '\r\n *\r\n * _.trimStart('-_-abc-_-', '_-');\r\n * // => 'abc-_-'\r\n */\r\n function trimStart(string, chars, guard) {\r\n string = toString(string);\r\n if (string && (guard || chars === undefined)) {\r\n return string.replace(reTrimStart, '');\r\n }\r\n if (!string || !(chars = baseToString(chars))) {\r\n return string;\r\n }\r\n var strSymbols = stringToArray(string),\r\n start = charsStartIndex(strSymbols, stringToArray(chars));\r\n\r\n return castSlice(strSymbols, start).join('');\r\n }\r\n\r\n /**\r\n * Truncates `string` if it's longer than the given maximum string length.\r\n * The last characters of the truncated string are replaced with the omission\r\n * string which defaults to \"...\".\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to truncate.\r\n * @param {Object} [options={}] The options object.\r\n * @param {number} [options.length=30] The maximum string length.\r\n * @param {string} [options.omission='...'] The string to indicate text is omitted.\r\n * @param {RegExp|string} [options.separator] The separator pattern to truncate to.\r\n * @returns {string} Returns the truncated string.\r\n * @example\r\n *\r\n * _.truncate('hi-diddly-ho there, neighborino');\r\n * // => 'hi-diddly-ho there, neighbo...'\r\n *\r\n * _.truncate('hi-diddly-ho there, neighborino', {\r\n * 'length': 24,\r\n * 'separator': ' '\r\n * });\r\n * // => 'hi-diddly-ho there,...'\r\n *\r\n * _.truncate('hi-diddly-ho there, neighborino', {\r\n * 'length': 24,\r\n * 'separator': /,? +/\r\n * });\r\n * // => 'hi-diddly-ho there...'\r\n *\r\n * _.truncate('hi-diddly-ho there, neighborino', {\r\n * 'omission': ' [...]'\r\n * });\r\n * // => 'hi-diddly-ho there, neig [...]'\r\n */\r\n function truncate(string, options) {\r\n var length = DEFAULT_TRUNC_LENGTH,\r\n omission = DEFAULT_TRUNC_OMISSION;\r\n\r\n if (isObject(options)) {\r\n var separator = 'separator' in options ? options.separator : separator;\r\n length = 'length' in options ? toInteger(options.length) : length;\r\n omission = 'omission' in options ? baseToString(options.omission) : omission;\r\n }\r\n string = toString(string);\r\n\r\n var strLength = string.length;\r\n if (hasUnicode(string)) {\r\n var strSymbols = stringToArray(string);\r\n strLength = strSymbols.length;\r\n }\r\n if (length >= strLength) {\r\n return string;\r\n }\r\n var end = length - stringSize(omission);\r\n if (end < 1) {\r\n return omission;\r\n }\r\n var result = strSymbols\r\n ? castSlice(strSymbols, 0, end).join('')\r\n : string.slice(0, end);\r\n\r\n if (separator === undefined) {\r\n return result + omission;\r\n }\r\n if (strSymbols) {\r\n end += (result.length - end);\r\n }\r\n if (isRegExp(separator)) {\r\n if (string.slice(end).search(separator)) {\r\n var match,\r\n substring = result;\r\n\r\n if (!separator.global) {\r\n separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g');\r\n }\r\n separator.lastIndex = 0;\r\n while ((match = separator.exec(substring))) {\r\n var newEnd = match.index;\r\n }\r\n result = result.slice(0, newEnd === undefined ? end : newEnd);\r\n }\r\n } else if (string.indexOf(baseToString(separator), end) != end) {\r\n var index = result.lastIndexOf(separator);\r\n if (index > -1) {\r\n result = result.slice(0, index);\r\n }\r\n }\r\n return result + omission;\r\n }\r\n\r\n /**\r\n * The inverse of `_.escape`; this method converts the HTML entities\r\n * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to\r\n * their corresponding characters.\r\n *\r\n * **Note:** No other HTML entities are unescaped. To unescape additional\r\n * HTML entities use a third-party library like [_he_](https://mths.be/he).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 0.6.0\r\n * @category String\r\n * @param {string} [string=''] The string to unescape.\r\n * @returns {string} Returns the unescaped string.\r\n * @example\r\n *\r\n * _.unescape('fred, barney, &amp; pebbles');\r\n * // => 'fred, barney, & pebbles'\r\n */\r\n function unescape(string) {\r\n string = toString(string);\r\n return (string && reHasEscapedHtml.test(string))\r\n ? string.replace(reEscapedHtml, unescapeHtmlChar)\r\n : string;\r\n }\r\n\r\n /**\r\n * Converts `string`, as space separated words, to upper case.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to convert.\r\n * @returns {string} Returns the upper cased string.\r\n * @example\r\n *\r\n * _.upperCase('--foo-bar');\r\n * // => 'FOO BAR'\r\n *\r\n * _.upperCase('fooBar');\r\n * // => 'FOO BAR'\r\n *\r\n * _.upperCase('__foo_bar__');\r\n * // => 'FOO BAR'\r\n */\r\n var upperCase = createCompounder(function(result, word, index) {\r\n return result + (index ? ' ' : '') + word.toUpperCase();\r\n });\r\n\r\n /**\r\n * Converts the first character of `string` to upper case.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to convert.\r\n * @returns {string} Returns the converted string.\r\n * @example\r\n *\r\n * _.upperFirst('fred');\r\n * // => 'Fred'\r\n *\r\n * _.upperFirst('FRED');\r\n * // => 'FRED'\r\n */\r\n var upperFirst = createCaseFirst('toUpperCase');\r\n\r\n /**\r\n * Splits `string` into an array of its words.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category String\r\n * @param {string} [string=''] The string to inspect.\r\n * @param {RegExp|string} [pattern] The pattern to match words.\r\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\r\n * @returns {Array} Returns the words of `string`.\r\n * @example\r\n *\r\n * _.words('fred, barney, & pebbles');\r\n * // => ['fred', 'barney', 'pebbles']\r\n *\r\n * _.words('fred, barney, & pebbles', /[^, ]+/g);\r\n * // => ['fred', 'barney', '&', 'pebbles']\r\n */\r\n function words(string, pattern, guard) {\r\n string = toString(string);\r\n pattern = guard ? undefined : pattern;\r\n\r\n if (pattern === undefined) {\r\n return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);\r\n }\r\n return string.match(pattern) || [];\r\n }\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Attempts to invoke `func`, returning either the result or the caught error\r\n * object. Any additional arguments are provided to `func` when it's invoked.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Util\r\n * @param {Function} func The function to attempt.\r\n * @param {...*} [args] The arguments to invoke `func` with.\r\n * @returns {*} Returns the `func` result or error object.\r\n * @example\r\n *\r\n * // Avoid throwing errors for invalid selectors.\r\n * var elements = _.attempt(function(selector) {\r\n * return document.querySelectorAll(selector);\r\n * }, '>_>');\r\n *\r\n * if (_.isError(elements)) {\r\n * elements = [];\r\n * }\r\n */\r\n var attempt = baseRest(function(func, args) {\r\n try {\r\n return apply(func, undefined, args);\r\n } catch (e) {\r\n return isError(e) ? e : new Error(e);\r\n }\r\n });\r\n\r\n /**\r\n * Binds methods of an object to the object itself, overwriting the existing\r\n * method.\r\n *\r\n * **Note:** This method doesn't set the \"length\" property of bound functions.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Util\r\n * @param {Object} object The object to bind and assign the bound methods to.\r\n * @param {...(string|string[])} methodNames The object method names to bind.\r\n * @returns {Object} Returns `object`.\r\n * @example\r\n *\r\n * var view = {\r\n * 'label': 'docs',\r\n * 'click': function() {\r\n * console.log('clicked ' + this.label);\r\n * }\r\n * };\r\n *\r\n * _.bindAll(view, ['click']);\r\n * jQuery(element).on('click', view.click);\r\n * // => Logs 'clicked docs' when clicked.\r\n */\r\n var bindAll = flatRest(function(object, methodNames) {\r\n arrayEach(methodNames, function(key) {\r\n key = toKey(key);\r\n baseAssignValue(object, key, bind(object[key], object));\r\n });\r\n return object;\r\n });\r\n\r\n /**\r\n * Creates a function that iterates over `pairs` and invokes the corresponding\r\n * function of the first predicate to return truthy. The predicate-function\r\n * pairs are invoked with the `this` binding and arguments of the created\r\n * function.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Util\r\n * @param {Array} pairs The predicate-function pairs.\r\n * @returns {Function} Returns the new composite function.\r\n * @example\r\n *\r\n * var func = _.cond([\r\n * [_.matches({ 'a': 1 }), _.constant('matches A')],\r\n * [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],\r\n * [_.stubTrue, _.constant('no match')]\r\n * ]);\r\n *\r\n * func({ 'a': 1, 'b': 2 });\r\n * // => 'matches A'\r\n *\r\n * func({ 'a': 0, 'b': 1 });\r\n * // => 'matches B'\r\n *\r\n * func({ 'a': '1', 'b': '2' });\r\n * // => 'no match'\r\n */\r\n function cond(pairs) {\r\n var length = pairs == null ? 0 : pairs.length,\r\n toIteratee = getIteratee();\r\n\r\n pairs = !length ? [] : arrayMap(pairs, function(pair) {\r\n if (typeof pair[1] != 'function') {\r\n throw new TypeError(FUNC_ERROR_TEXT);\r\n }\r\n return [toIteratee(pair[0]), pair[1]];\r\n });\r\n\r\n return baseRest(function(args) {\r\n var index = -1;\r\n while (++index < length) {\r\n var pair = pairs[index];\r\n if (apply(pair[0], this, args)) {\r\n return apply(pair[1], this, args);\r\n }\r\n }\r\n });\r\n }\r\n\r\n /**\r\n * Creates a function that invokes the predicate properties of `source` with\r\n * the corresponding property values of a given object, returning `true` if\r\n * all predicates return truthy, else `false`.\r\n *\r\n * **Note:** The created function is equivalent to `_.conformsTo` with\r\n * `source` partially applied.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Util\r\n * @param {Object} source The object of property predicates to conform to.\r\n * @returns {Function} Returns the new spec function.\r\n * @example\r\n *\r\n * var objects = [\r\n * { 'a': 2, 'b': 1 },\r\n * { 'a': 1, 'b': 2 }\r\n * ];\r\n *\r\n * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } }));\r\n * // => [{ 'a': 1, 'b': 2 }]\r\n */\r\n function conforms(source) {\r\n return baseConforms(baseClone(source, CLONE_DEEP_FLAG));\r\n }\r\n\r\n /**\r\n * Creates a function that returns `value`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.4.0\r\n * @category Util\r\n * @param {*} value The value to return from the new function.\r\n * @returns {Function} Returns the new constant function.\r\n * @example\r\n *\r\n * var objects = _.times(2, _.constant({ 'a': 1 }));\r\n *\r\n * console.log(objects);\r\n * // => [{ 'a': 1 }, { 'a': 1 }]\r\n *\r\n * console.log(objects[0] === objects[1]);\r\n * // => true\r\n */\r\n function constant(value) {\r\n return function() {\r\n return value;\r\n };\r\n }\r\n\r\n /**\r\n * Checks `value` to determine whether a default value should be returned in\r\n * its place. The `defaultValue` is returned if `value` is `NaN`, `null`,\r\n * or `undefined`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.14.0\r\n * @category Util\r\n * @param {*} value The value to check.\r\n * @param {*} defaultValue The default value.\r\n * @returns {*} Returns the resolved value.\r\n * @example\r\n *\r\n * _.defaultTo(1, 10);\r\n * // => 1\r\n *\r\n * _.defaultTo(undefined, 10);\r\n * // => 10\r\n */\r\n function defaultTo(value, defaultValue) {\r\n return (value == null || value !== value) ? defaultValue : value;\r\n }\r\n\r\n /**\r\n * Creates a function that returns the result of invoking the given functions\r\n * with the `this` binding of the created function, where each successive\r\n * invocation is supplied the return value of the previous.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Util\r\n * @param {...(Function|Function[])} [funcs] The functions to invoke.\r\n * @returns {Function} Returns the new composite function.\r\n * @see _.flowRight\r\n * @example\r\n *\r\n * function square(n) {\r\n * return n * n;\r\n * }\r\n *\r\n * var addSquare = _.flow([_.add, square]);\r\n * addSquare(1, 2);\r\n * // => 9\r\n */\r\n var flow = createFlow();\r\n\r\n /**\r\n * This method is like `_.flow` except that it creates a function that\r\n * invokes the given functions from right to left.\r\n *\r\n * @static\r\n * @since 3.0.0\r\n * @memberOf _\r\n * @category Util\r\n * @param {...(Function|Function[])} [funcs] The functions to invoke.\r\n * @returns {Function} Returns the new composite function.\r\n * @see _.flow\r\n * @example\r\n *\r\n * function square(n) {\r\n * return n * n;\r\n * }\r\n *\r\n * var addSquare = _.flowRight([square, _.add]);\r\n * addSquare(1, 2);\r\n * // => 9\r\n */\r\n var flowRight = createFlow(true);\r\n\r\n /**\r\n * This method returns the first argument it receives.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Util\r\n * @param {*} value Any value.\r\n * @returns {*} Returns `value`.\r\n * @example\r\n *\r\n * var object = { 'a': 1 };\r\n *\r\n * console.log(_.identity(object) === object);\r\n * // => true\r\n */\r\n function identity(value) {\r\n return value;\r\n }\r\n\r\n /**\r\n * Creates a function that invokes `func` with the arguments of the created\r\n * function. If `func` is a property name, the created function returns the\r\n * property value for a given element. If `func` is an array or object, the\r\n * created function returns `true` for elements that contain the equivalent\r\n * source properties, otherwise it returns `false`.\r\n *\r\n * @static\r\n * @since 4.0.0\r\n * @memberOf _\r\n * @category Util\r\n * @param {*} [func=_.identity] The value to convert to a callback.\r\n * @returns {Function} Returns the callback.\r\n * @example\r\n *\r\n * var users = [\r\n * { 'user': 'barney', 'age': 36, 'active': true },\r\n * { 'user': 'fred', 'age': 40, 'active': false }\r\n * ];\r\n *\r\n * // The `_.matches` iteratee shorthand.\r\n * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));\r\n * // => [{ 'user': 'barney', 'age': 36, 'active': true }]\r\n *\r\n * // The `_.matchesProperty` iteratee shorthand.\r\n * _.filter(users, _.iteratee(['user', 'fred']));\r\n * // => [{ 'user': 'fred', 'age': 40 }]\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.map(users, _.iteratee('user'));\r\n * // => ['barney', 'fred']\r\n *\r\n * // Create custom iteratee shorthands.\r\n * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {\r\n * return !_.isRegExp(func) ? iteratee(func) : function(string) {\r\n * return func.test(string);\r\n * };\r\n * });\r\n *\r\n * _.filter(['abc', 'def'], /ef/);\r\n * // => ['def']\r\n */\r\n function iteratee(func) {\r\n return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));\r\n }\r\n\r\n /**\r\n * Creates a function that performs a partial deep comparison between a given\r\n * object and `source`, returning `true` if the given object has equivalent\r\n * property values, else `false`.\r\n *\r\n * **Note:** The created function is equivalent to `_.isMatch` with `source`\r\n * partially applied.\r\n *\r\n * Partial comparisons will match empty array and empty object `source`\r\n * values against any array or object value, respectively. See `_.isEqual`\r\n * for a list of supported value comparisons.\r\n *\r\n * **Note:** Multiple values can be checked by combining several matchers\r\n * using `_.overSome`\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Util\r\n * @param {Object} source The object of property values to match.\r\n * @returns {Function} Returns the new spec function.\r\n * @example\r\n *\r\n * var objects = [\r\n * { 'a': 1, 'b': 2, 'c': 3 },\r\n * { 'a': 4, 'b': 5, 'c': 6 }\r\n * ];\r\n *\r\n * _.filter(objects, _.matches({ 'a': 4, 'c': 6 }));\r\n * // => [{ 'a': 4, 'b': 5, 'c': 6 }]\r\n *\r\n * // Checking for several possible values\r\n * _.filter(objects, _.overSome([_.matches({ 'a': 1 }), _.matches({ 'a': 4 })]));\r\n * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]\r\n */\r\n function matches(source) {\r\n return baseMatches(baseClone(source, CLONE_DEEP_FLAG));\r\n }\r\n\r\n /**\r\n * Creates a function that performs a partial deep comparison between the\r\n * value at `path` of a given object to `srcValue`, returning `true` if the\r\n * object value is equivalent, else `false`.\r\n *\r\n * **Note:** Partial comparisons will match empty array and empty object\r\n * `srcValue` values against any array or object value, respectively. See\r\n * `_.isEqual` for a list of supported value comparisons.\r\n *\r\n * **Note:** Multiple values can be checked by combining several matchers\r\n * using `_.overSome`\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.2.0\r\n * @category Util\r\n * @param {Array|string} path The path of the property to get.\r\n * @param {*} srcValue The value to match.\r\n * @returns {Function} Returns the new spec function.\r\n * @example\r\n *\r\n * var objects = [\r\n * { 'a': 1, 'b': 2, 'c': 3 },\r\n * { 'a': 4, 'b': 5, 'c': 6 }\r\n * ];\r\n *\r\n * _.find(objects, _.matchesProperty('a', 4));\r\n * // => { 'a': 4, 'b': 5, 'c': 6 }\r\n *\r\n * // Checking for several possible values\r\n * _.filter(objects, _.overSome([_.matchesProperty('a', 1), _.matchesProperty('a', 4)]));\r\n * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]\r\n */\r\n function matchesProperty(path, srcValue) {\r\n return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG));\r\n }\r\n\r\n /**\r\n * Creates a function that invokes the method at `path` of a given object.\r\n * Any additional arguments are provided to the invoked method.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.7.0\r\n * @category Util\r\n * @param {Array|string} path The path of the method to invoke.\r\n * @param {...*} [args] The arguments to invoke the method with.\r\n * @returns {Function} Returns the new invoker function.\r\n * @example\r\n *\r\n * var objects = [\r\n * { 'a': { 'b': _.constant(2) } },\r\n * { 'a': { 'b': _.constant(1) } }\r\n * ];\r\n *\r\n * _.map(objects, _.method('a.b'));\r\n * // => [2, 1]\r\n *\r\n * _.map(objects, _.method(['a', 'b']));\r\n * // => [2, 1]\r\n */\r\n var method = baseRest(function(path, args) {\r\n return function(object) {\r\n return baseInvoke(object, path, args);\r\n };\r\n });\r\n\r\n /**\r\n * The opposite of `_.method`; this method creates a function that invokes\r\n * the method at a given path of `object`. Any additional arguments are\r\n * provided to the invoked method.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.7.0\r\n * @category Util\r\n * @param {Object} object The object to query.\r\n * @param {...*} [args] The arguments to invoke the method with.\r\n * @returns {Function} Returns the new invoker function.\r\n * @example\r\n *\r\n * var array = _.times(3, _.constant),\r\n * object = { 'a': array, 'b': array, 'c': array };\r\n *\r\n * _.map(['a[2]', 'c[0]'], _.methodOf(object));\r\n * // => [2, 0]\r\n *\r\n * _.map([['a', '2'], ['c', '0']], _.methodOf(object));\r\n * // => [2, 0]\r\n */\r\n var methodOf = baseRest(function(object, args) {\r\n return function(path) {\r\n return baseInvoke(object, path, args);\r\n };\r\n });\r\n\r\n /**\r\n * Adds all own enumerable string keyed function properties of a source\r\n * object to the destination object. If `object` is a function, then methods\r\n * are added to its prototype as well.\r\n *\r\n * **Note:** Use `_.runInContext` to create a pristine `lodash` function to\r\n * avoid conflicts caused by modifying the original.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Util\r\n * @param {Function|Object} [object=lodash] The destination object.\r\n * @param {Object} source The object of functions to add.\r\n * @param {Object} [options={}] The options object.\r\n * @param {boolean} [options.chain=true] Specify whether mixins are chainable.\r\n * @returns {Function|Object} Returns `object`.\r\n * @example\r\n *\r\n * function vowels(string) {\r\n * return _.filter(string, function(v) {\r\n * return /[aeiou]/i.test(v);\r\n * });\r\n * }\r\n *\r\n * _.mixin({ 'vowels': vowels });\r\n * _.vowels('fred');\r\n * // => ['e']\r\n *\r\n * _('fred').vowels().value();\r\n * // => ['e']\r\n *\r\n * _.mixin({ 'vowels': vowels }, { 'chain': false });\r\n * _('fred').vowels();\r\n * // => ['e']\r\n */\r\n function mixin(object, source, options) {\r\n var props = keys(source),\r\n methodNames = baseFunctions(source, props);\r\n\r\n if (options == null &&\r\n !(isObject(source) && (methodNames.length || !props.length))) {\r\n options = source;\r\n source = object;\r\n object = this;\r\n methodNames = baseFunctions(source, keys(source));\r\n }\r\n var chain = !(isObject(options) && 'chain' in options) || !!options.chain,\r\n isFunc = isFunction(object);\r\n\r\n arrayEach(methodNames, function(methodName) {\r\n var func = source[methodName];\r\n object[methodName] = func;\r\n if (isFunc) {\r\n object.prototype[methodName] = function() {\r\n var chainAll = this.__chain__;\r\n if (chain || chainAll) {\r\n var result = object(this.__wrapped__),\r\n actions = result.__actions__ = copyArray(this.__actions__);\r\n\r\n actions.push({ 'func': func, 'args': arguments, 'thisArg': object });\r\n result.__chain__ = chainAll;\r\n return result;\r\n }\r\n return func.apply(object, arrayPush([this.value()], arguments));\r\n };\r\n }\r\n });\r\n\r\n return object;\r\n }\r\n\r\n /**\r\n * Reverts the `_` variable to its previous value and returns a reference to\r\n * the `lodash` function.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Util\r\n * @returns {Function} Returns the `lodash` function.\r\n * @example\r\n *\r\n * var lodash = _.noConflict();\r\n */\r\n function noConflict() {\r\n if (root._ === this) {\r\n root._ = oldDash;\r\n }\r\n return this;\r\n }\r\n\r\n /**\r\n * This method returns `undefined`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.3.0\r\n * @category Util\r\n * @example\r\n *\r\n * _.times(2, _.noop);\r\n * // => [undefined, undefined]\r\n */\r\n function noop() {\r\n // No operation performed.\r\n }\r\n\r\n /**\r\n * Creates a function that gets the argument at index `n`. If `n` is negative,\r\n * the nth argument from the end is returned.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Util\r\n * @param {number} [n=0] The index of the argument to return.\r\n * @returns {Function} Returns the new pass-thru function.\r\n * @example\r\n *\r\n * var func = _.nthArg(1);\r\n * func('a', 'b', 'c', 'd');\r\n * // => 'b'\r\n *\r\n * var func = _.nthArg(-2);\r\n * func('a', 'b', 'c', 'd');\r\n * // => 'c'\r\n */\r\n function nthArg(n) {\r\n n = toInteger(n);\r\n return baseRest(function(args) {\r\n return baseNth(args, n);\r\n });\r\n }\r\n\r\n /**\r\n * Creates a function that invokes `iteratees` with the arguments it receives\r\n * and returns their results.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Util\r\n * @param {...(Function|Function[])} [iteratees=[_.identity]]\r\n * The iteratees to invoke.\r\n * @returns {Function} Returns the new function.\r\n * @example\r\n *\r\n * var func = _.over([Math.max, Math.min]);\r\n *\r\n * func(1, 2, 3, 4);\r\n * // => [4, 1]\r\n */\r\n var over = createOver(arrayMap);\r\n\r\n /**\r\n * Creates a function that checks if **all** of the `predicates` return\r\n * truthy when invoked with the arguments it receives.\r\n *\r\n * Following shorthands are possible for providing predicates.\r\n * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.\r\n * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Util\r\n * @param {...(Function|Function[])} [predicates=[_.identity]]\r\n * The predicates to check.\r\n * @returns {Function} Returns the new function.\r\n * @example\r\n *\r\n * var func = _.overEvery([Boolean, isFinite]);\r\n *\r\n * func('1');\r\n * // => true\r\n *\r\n * func(null);\r\n * // => false\r\n *\r\n * func(NaN);\r\n * // => false\r\n */\r\n var overEvery = createOver(arrayEvery);\r\n\r\n /**\r\n * Creates a function that checks if **any** of the `predicates` return\r\n * truthy when invoked with the arguments it receives.\r\n *\r\n * Following shorthands are possible for providing predicates.\r\n * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.\r\n * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Util\r\n * @param {...(Function|Function[])} [predicates=[_.identity]]\r\n * The predicates to check.\r\n * @returns {Function} Returns the new function.\r\n * @example\r\n *\r\n * var func = _.overSome([Boolean, isFinite]);\r\n *\r\n * func('1');\r\n * // => true\r\n *\r\n * func(null);\r\n * // => true\r\n *\r\n * func(NaN);\r\n * // => false\r\n *\r\n * var matchesFunc = _.overSome([{ 'a': 1 }, { 'a': 2 }])\r\n * var matchesPropertyFunc = _.overSome([['a', 1], ['a', 2]])\r\n */\r\n var overSome = createOver(arraySome);\r\n\r\n /**\r\n * Creates a function that returns the value at `path` of a given object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 2.4.0\r\n * @category Util\r\n * @param {Array|string} path The path of the property to get.\r\n * @returns {Function} Returns the new accessor function.\r\n * @example\r\n *\r\n * var objects = [\r\n * { 'a': { 'b': 2 } },\r\n * { 'a': { 'b': 1 } }\r\n * ];\r\n *\r\n * _.map(objects, _.property('a.b'));\r\n * // => [2, 1]\r\n *\r\n * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');\r\n * // => [1, 2]\r\n */\r\n function property(path) {\r\n return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);\r\n }\r\n\r\n /**\r\n * The opposite of `_.property`; this method creates a function that returns\r\n * the value at a given path of `object`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.0.0\r\n * @category Util\r\n * @param {Object} object The object to query.\r\n * @returns {Function} Returns the new accessor function.\r\n * @example\r\n *\r\n * var array = [0, 1, 2],\r\n * object = { 'a': array, 'b': array, 'c': array };\r\n *\r\n * _.map(['a[2]', 'c[0]'], _.propertyOf(object));\r\n * // => [2, 0]\r\n *\r\n * _.map([['a', '2'], ['c', '0']], _.propertyOf(object));\r\n * // => [2, 0]\r\n */\r\n function propertyOf(object) {\r\n return function(path) {\r\n return object == null ? undefined : baseGet(object, path);\r\n };\r\n }\r\n\r\n /**\r\n * Creates an array of numbers (positive and/or negative) progressing from\r\n * `start` up to, but not including, `end`. A step of `-1` is used if a negative\r\n * `start` is specified without an `end` or `step`. If `end` is not specified,\r\n * it's set to `start` with `start` then set to `0`.\r\n *\r\n * **Note:** JavaScript follows the IEEE-754 standard for resolving\r\n * floating-point values which can produce unexpected results.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Util\r\n * @param {number} [start=0] The start of the range.\r\n * @param {number} end The end of the range.\r\n * @param {number} [step=1] The value to increment or decrement by.\r\n * @returns {Array} Returns the range of numbers.\r\n * @see _.inRange, _.rangeRight\r\n * @example\r\n *\r\n * _.range(4);\r\n * // => [0, 1, 2, 3]\r\n *\r\n * _.range(-4);\r\n * // => [0, -1, -2, -3]\r\n *\r\n * _.range(1, 5);\r\n * // => [1, 2, 3, 4]\r\n *\r\n * _.range(0, 20, 5);\r\n * // => [0, 5, 10, 15]\r\n *\r\n * _.range(0, -4, -1);\r\n * // => [0, -1, -2, -3]\r\n *\r\n * _.range(1, 4, 0);\r\n * // => [1, 1, 1]\r\n *\r\n * _.range(0);\r\n * // => []\r\n */\r\n var range = createRange();\r\n\r\n /**\r\n * This method is like `_.range` except that it populates values in\r\n * descending order.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Util\r\n * @param {number} [start=0] The start of the range.\r\n * @param {number} end The end of the range.\r\n * @param {number} [step=1] The value to increment or decrement by.\r\n * @returns {Array} Returns the range of numbers.\r\n * @see _.inRange, _.range\r\n * @example\r\n *\r\n * _.rangeRight(4);\r\n * // => [3, 2, 1, 0]\r\n *\r\n * _.rangeRight(-4);\r\n * // => [-3, -2, -1, 0]\r\n *\r\n * _.rangeRight(1, 5);\r\n * // => [4, 3, 2, 1]\r\n *\r\n * _.rangeRight(0, 20, 5);\r\n * // => [15, 10, 5, 0]\r\n *\r\n * _.rangeRight(0, -4, -1);\r\n * // => [-3, -2, -1, 0]\r\n *\r\n * _.rangeRight(1, 4, 0);\r\n * // => [1, 1, 1]\r\n *\r\n * _.rangeRight(0);\r\n * // => []\r\n */\r\n var rangeRight = createRange(true);\r\n\r\n /**\r\n * This method returns a new empty array.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.13.0\r\n * @category Util\r\n * @returns {Array} Returns the new empty array.\r\n * @example\r\n *\r\n * var arrays = _.times(2, _.stubArray);\r\n *\r\n * console.log(arrays);\r\n * // => [[], []]\r\n *\r\n * console.log(arrays[0] === arrays[1]);\r\n * // => false\r\n */\r\n function stubArray() {\r\n return [];\r\n }\r\n\r\n /**\r\n * This method returns `false`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.13.0\r\n * @category Util\r\n * @returns {boolean} Returns `false`.\r\n * @example\r\n *\r\n * _.times(2, _.stubFalse);\r\n * // => [false, false]\r\n */\r\n function stubFalse() {\r\n return false;\r\n }\r\n\r\n /**\r\n * This method returns a new empty object.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.13.0\r\n * @category Util\r\n * @returns {Object} Returns the new empty object.\r\n * @example\r\n *\r\n * var objects = _.times(2, _.stubObject);\r\n *\r\n * console.log(objects);\r\n * // => [{}, {}]\r\n *\r\n * console.log(objects[0] === objects[1]);\r\n * // => false\r\n */\r\n function stubObject() {\r\n return {};\r\n }\r\n\r\n /**\r\n * This method returns an empty string.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.13.0\r\n * @category Util\r\n * @returns {string} Returns the empty string.\r\n * @example\r\n *\r\n * _.times(2, _.stubString);\r\n * // => ['', '']\r\n */\r\n function stubString() {\r\n return '';\r\n }\r\n\r\n /**\r\n * This method returns `true`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.13.0\r\n * @category Util\r\n * @returns {boolean} Returns `true`.\r\n * @example\r\n *\r\n * _.times(2, _.stubTrue);\r\n * // => [true, true]\r\n */\r\n function stubTrue() {\r\n return true;\r\n }\r\n\r\n /**\r\n * Invokes the iteratee `n` times, returning an array of the results of\r\n * each invocation. The iteratee is invoked with one argument; (index).\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Util\r\n * @param {number} n The number of times to invoke `iteratee`.\r\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\r\n * @returns {Array} Returns the array of results.\r\n * @example\r\n *\r\n * _.times(3, String);\r\n * // => ['0', '1', '2']\r\n *\r\n * _.times(4, _.constant(0));\r\n * // => [0, 0, 0, 0]\r\n */\r\n function times(n, iteratee) {\r\n n = toInteger(n);\r\n if (n < 1 || n > MAX_SAFE_INTEGER) {\r\n return [];\r\n }\r\n var index = MAX_ARRAY_LENGTH,\r\n length = nativeMin(n, MAX_ARRAY_LENGTH);\r\n\r\n iteratee = getIteratee(iteratee);\r\n n -= MAX_ARRAY_LENGTH;\r\n\r\n var result = baseTimes(length, iteratee);\r\n while (++index < n) {\r\n iteratee(index);\r\n }\r\n return result;\r\n }\r\n\r\n /**\r\n * Converts `value` to a property path array.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Util\r\n * @param {*} value The value to convert.\r\n * @returns {Array} Returns the new property path array.\r\n * @example\r\n *\r\n * _.toPath('a.b.c');\r\n * // => ['a', 'b', 'c']\r\n *\r\n * _.toPath('a[0].b.c');\r\n * // => ['a', '0', 'b', 'c']\r\n */\r\n function toPath(value) {\r\n if (isArray(value)) {\r\n return arrayMap(value, toKey);\r\n }\r\n return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));\r\n }\r\n\r\n /**\r\n * Generates a unique ID. If `prefix` is given, the ID is appended to it.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Util\r\n * @param {string} [prefix=''] The value to prefix the ID with.\r\n * @returns {string} Returns the unique ID.\r\n * @example\r\n *\r\n * _.uniqueId('contact_');\r\n * // => 'contact_104'\r\n *\r\n * _.uniqueId();\r\n * // => '105'\r\n */\r\n function uniqueId(prefix) {\r\n var id = ++idCounter;\r\n return toString(prefix) + id;\r\n }\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * Adds two numbers.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.4.0\r\n * @category Math\r\n * @param {number} augend The first number in an addition.\r\n * @param {number} addend The second number in an addition.\r\n * @returns {number} Returns the total.\r\n * @example\r\n *\r\n * _.add(6, 4);\r\n * // => 10\r\n */\r\n var add = createMathOperation(function(augend, addend) {\r\n return augend + addend;\r\n }, 0);\r\n\r\n /**\r\n * Computes `number` rounded up to `precision`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.10.0\r\n * @category Math\r\n * @param {number} number The number to round up.\r\n * @param {number} [precision=0] The precision to round up to.\r\n * @returns {number} Returns the rounded up number.\r\n * @example\r\n *\r\n * _.ceil(4.006);\r\n * // => 5\r\n *\r\n * _.ceil(6.004, 2);\r\n * // => 6.01\r\n *\r\n * _.ceil(6040, -2);\r\n * // => 6100\r\n */\r\n var ceil = createRound('ceil');\r\n\r\n /**\r\n * Divide two numbers.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.7.0\r\n * @category Math\r\n * @param {number} dividend The first number in a division.\r\n * @param {number} divisor The second number in a division.\r\n * @returns {number} Returns the quotient.\r\n * @example\r\n *\r\n * _.divide(6, 4);\r\n * // => 1.5\r\n */\r\n var divide = createMathOperation(function(dividend, divisor) {\r\n return dividend / divisor;\r\n }, 1);\r\n\r\n /**\r\n * Computes `number` rounded down to `precision`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.10.0\r\n * @category Math\r\n * @param {number} number The number to round down.\r\n * @param {number} [precision=0] The precision to round down to.\r\n * @returns {number} Returns the rounded down number.\r\n * @example\r\n *\r\n * _.floor(4.006);\r\n * // => 4\r\n *\r\n * _.floor(0.046, 2);\r\n * // => 0.04\r\n *\r\n * _.floor(4060, -2);\r\n * // => 4000\r\n */\r\n var floor = createRound('floor');\r\n\r\n /**\r\n * Computes the maximum value of `array`. If `array` is empty or falsey,\r\n * `undefined` is returned.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Math\r\n * @param {Array} array The array to iterate over.\r\n * @returns {*} Returns the maximum value.\r\n * @example\r\n *\r\n * _.max([4, 2, 8, 6]);\r\n * // => 8\r\n *\r\n * _.max([]);\r\n * // => undefined\r\n */\r\n function max(array) {\r\n return (array && array.length)\r\n ? baseExtremum(array, identity, baseGt)\r\n : undefined;\r\n }\r\n\r\n /**\r\n * This method is like `_.max` except that it accepts `iteratee` which is\r\n * invoked for each element in `array` to generate the criterion by which\r\n * the value is ranked. The iteratee is invoked with one argument: (value).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Math\r\n * @param {Array} array The array to iterate over.\r\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\r\n * @returns {*} Returns the maximum value.\r\n * @example\r\n *\r\n * var objects = [{ 'n': 1 }, { 'n': 2 }];\r\n *\r\n * _.maxBy(objects, function(o) { return o.n; });\r\n * // => { 'n': 2 }\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.maxBy(objects, 'n');\r\n * // => { 'n': 2 }\r\n */\r\n function maxBy(array, iteratee) {\r\n return (array && array.length)\r\n ? baseExtremum(array, getIteratee(iteratee, 2), baseGt)\r\n : undefined;\r\n }\r\n\r\n /**\r\n * Computes the mean of the values in `array`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Math\r\n * @param {Array} array The array to iterate over.\r\n * @returns {number} Returns the mean.\r\n * @example\r\n *\r\n * _.mean([4, 2, 8, 6]);\r\n * // => 5\r\n */\r\n function mean(array) {\r\n return baseMean(array, identity);\r\n }\r\n\r\n /**\r\n * This method is like `_.mean` except that it accepts `iteratee` which is\r\n * invoked for each element in `array` to generate the value to be averaged.\r\n * The iteratee is invoked with one argument: (value).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.7.0\r\n * @category Math\r\n * @param {Array} array The array to iterate over.\r\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\r\n * @returns {number} Returns the mean.\r\n * @example\r\n *\r\n * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];\r\n *\r\n * _.meanBy(objects, function(o) { return o.n; });\r\n * // => 5\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.meanBy(objects, 'n');\r\n * // => 5\r\n */\r\n function meanBy(array, iteratee) {\r\n return baseMean(array, getIteratee(iteratee, 2));\r\n }\r\n\r\n /**\r\n * Computes the minimum value of `array`. If `array` is empty or falsey,\r\n * `undefined` is returned.\r\n *\r\n * @static\r\n * @since 0.1.0\r\n * @memberOf _\r\n * @category Math\r\n * @param {Array} array The array to iterate over.\r\n * @returns {*} Returns the minimum value.\r\n * @example\r\n *\r\n * _.min([4, 2, 8, 6]);\r\n * // => 2\r\n *\r\n * _.min([]);\r\n * // => undefined\r\n */\r\n function min(array) {\r\n return (array && array.length)\r\n ? baseExtremum(array, identity, baseLt)\r\n : undefined;\r\n }\r\n\r\n /**\r\n * This method is like `_.min` except that it accepts `iteratee` which is\r\n * invoked for each element in `array` to generate the criterion by which\r\n * the value is ranked. The iteratee is invoked with one argument: (value).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Math\r\n * @param {Array} array The array to iterate over.\r\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\r\n * @returns {*} Returns the minimum value.\r\n * @example\r\n *\r\n * var objects = [{ 'n': 1 }, { 'n': 2 }];\r\n *\r\n * _.minBy(objects, function(o) { return o.n; });\r\n * // => { 'n': 1 }\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.minBy(objects, 'n');\r\n * // => { 'n': 1 }\r\n */\r\n function minBy(array, iteratee) {\r\n return (array && array.length)\r\n ? baseExtremum(array, getIteratee(iteratee, 2), baseLt)\r\n : undefined;\r\n }\r\n\r\n /**\r\n * Multiply two numbers.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.7.0\r\n * @category Math\r\n * @param {number} multiplier The first number in a multiplication.\r\n * @param {number} multiplicand The second number in a multiplication.\r\n * @returns {number} Returns the product.\r\n * @example\r\n *\r\n * _.multiply(6, 4);\r\n * // => 24\r\n */\r\n var multiply = createMathOperation(function(multiplier, multiplicand) {\r\n return multiplier * multiplicand;\r\n }, 1);\r\n\r\n /**\r\n * Computes `number` rounded to `precision`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.10.0\r\n * @category Math\r\n * @param {number} number The number to round.\r\n * @param {number} [precision=0] The precision to round to.\r\n * @returns {number} Returns the rounded number.\r\n * @example\r\n *\r\n * _.round(4.006);\r\n * // => 4\r\n *\r\n * _.round(4.006, 2);\r\n * // => 4.01\r\n *\r\n * _.round(4060, -2);\r\n * // => 4100\r\n */\r\n var round = createRound('round');\r\n\r\n /**\r\n * Subtract two numbers.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Math\r\n * @param {number} minuend The first number in a subtraction.\r\n * @param {number} subtrahend The second number in a subtraction.\r\n * @returns {number} Returns the difference.\r\n * @example\r\n *\r\n * _.subtract(6, 4);\r\n * // => 2\r\n */\r\n var subtract = createMathOperation(function(minuend, subtrahend) {\r\n return minuend - subtrahend;\r\n }, 0);\r\n\r\n /**\r\n * Computes the sum of the values in `array`.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 3.4.0\r\n * @category Math\r\n * @param {Array} array The array to iterate over.\r\n * @returns {number} Returns the sum.\r\n * @example\r\n *\r\n * _.sum([4, 2, 8, 6]);\r\n * // => 20\r\n */\r\n function sum(array) {\r\n return (array && array.length)\r\n ? baseSum(array, identity)\r\n : 0;\r\n }\r\n\r\n /**\r\n * This method is like `_.sum` except that it accepts `iteratee` which is\r\n * invoked for each element in `array` to generate the value to be summed.\r\n * The iteratee is invoked with one argument: (value).\r\n *\r\n * @static\r\n * @memberOf _\r\n * @since 4.0.0\r\n * @category Math\r\n * @param {Array} array The array to iterate over.\r\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\r\n * @returns {number} Returns the sum.\r\n * @example\r\n *\r\n * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];\r\n *\r\n * _.sumBy(objects, function(o) { return o.n; });\r\n * // => 20\r\n *\r\n * // The `_.property` iteratee shorthand.\r\n * _.sumBy(objects, 'n');\r\n * // => 20\r\n */\r\n function sumBy(array, iteratee) {\r\n return (array && array.length)\r\n ? baseSum(array, getIteratee(iteratee, 2))\r\n : 0;\r\n }\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n // Add methods that return wrapped values in chain sequences.\r\n lodash.after = after;\r\n lodash.ary = ary;\r\n lodash.assign = assign;\r\n lodash.assignIn = assignIn;\r\n lodash.assignInWith = assignInWith;\r\n lodash.assignWith = assignWith;\r\n lodash.at = at;\r\n lodash.before = before;\r\n lodash.bind = bind;\r\n lodash.bindAll = bindAll;\r\n lodash.bindKey = bindKey;\r\n lodash.castArray = castArray;\r\n lodash.chain = chain;\r\n lodash.chunk = chunk;\r\n lodash.compact = compact;\r\n lodash.concat = concat;\r\n lodash.cond = cond;\r\n lodash.conforms = conforms;\r\n lodash.constant = constant;\r\n lodash.countBy = countBy;\r\n lodash.create = create;\r\n lodash.curry = curry;\r\n lodash.curryRight = curryRight;\r\n lodash.debounce = debounce;\r\n lodash.defaults = defaults;\r\n lodash.defaultsDeep = defaultsDeep;\r\n lodash.defer = defer;\r\n lodash.delay = delay;\r\n lodash.difference = difference;\r\n lodash.differenceBy = differenceBy;\r\n lodash.differenceWith = differenceWith;\r\n lodash.drop = drop;\r\n lodash.dropRight = dropRight;\r\n lodash.dropRightWhile = dropRightWhile;\r\n lodash.dropWhile = dropWhile;\r\n lodash.fill = fill;\r\n lodash.filter = filter;\r\n lodash.flatMap = flatMap;\r\n lodash.flatMapDeep = flatMapDeep;\r\n lodash.flatMapDepth = flatMapDepth;\r\n lodash.flatten = flatten;\r\n lodash.flattenDeep = flattenDeep;\r\n lodash.flattenDepth = flattenDepth;\r\n lodash.flip = flip;\r\n lodash.flow = flow;\r\n lodash.flowRight = flowRight;\r\n lodash.fromPairs = fromPairs;\r\n lodash.functions = functions;\r\n lodash.functionsIn = functionsIn;\r\n lodash.groupBy = groupBy;\r\n lodash.initial = initial;\r\n lodash.intersection = intersection;\r\n lodash.intersectionBy = intersectionBy;\r\n lodash.intersectionWith = intersectionWith;\r\n lodash.invert = invert;\r\n lodash.invertBy = invertBy;\r\n lodash.invokeMap = invokeMap;\r\n lodash.iteratee = iteratee;\r\n lodash.keyBy = keyBy;\r\n lodash.keys = keys;\r\n lodash.keysIn = keysIn;\r\n lodash.map = map;\r\n lodash.mapKeys = mapKeys;\r\n lodash.mapValues = mapValues;\r\n lodash.matches = matches;\r\n lodash.matchesProperty = matchesProperty;\r\n lodash.memoize = memoize;\r\n lodash.merge = merge;\r\n lodash.mergeWith = mergeWith;\r\n lodash.method = method;\r\n lodash.methodOf = methodOf;\r\n lodash.mixin = mixin;\r\n lodash.negate = negate;\r\n lodash.nthArg = nthArg;\r\n lodash.omit = omit;\r\n lodash.omitBy = omitBy;\r\n lodash.once = once;\r\n lodash.orderBy = orderBy;\r\n lodash.over = over;\r\n lodash.overArgs = overArgs;\r\n lodash.overEvery = overEvery;\r\n lodash.overSome = overSome;\r\n lodash.partial = partial;\r\n lodash.partialRight = partialRight;\r\n lodash.partition = partition;\r\n lodash.pick = pick;\r\n lodash.pickBy = pickBy;\r\n lodash.property = property;\r\n lodash.propertyOf = propertyOf;\r\n lodash.pull = pull;\r\n lodash.pullAll = pullAll;\r\n lodash.pullAllBy = pullAllBy;\r\n lodash.pullAllWith = pullAllWith;\r\n lodash.pullAt = pullAt;\r\n lodash.range = range;\r\n lodash.rangeRight = rangeRight;\r\n lodash.rearg = rearg;\r\n lodash.reject = reject;\r\n lodash.remove = remove;\r\n lodash.rest = rest;\r\n lodash.reverse = reverse;\r\n lodash.sampleSize = sampleSize;\r\n lodash.set = set;\r\n lodash.setWith = setWith;\r\n lodash.shuffle = shuffle;\r\n lodash.slice = slice;\r\n lodash.sortBy = sortBy;\r\n lodash.sortedUniq = sortedUniq;\r\n lodash.sortedUniqBy = sortedUniqBy;\r\n lodash.split = split;\r\n lodash.spread = spread;\r\n lodash.tail = tail;\r\n lodash.take = take;\r\n lodash.takeRight = takeRight;\r\n lodash.takeRightWhile = takeRightWhile;\r\n lodash.takeWhile = takeWhile;\r\n lodash.tap = tap;\r\n lodash.throttle = throttle;\r\n lodash.thru = thru;\r\n lodash.toArray = toArray;\r\n lodash.toPairs = toPairs;\r\n lodash.toPairsIn = toPairsIn;\r\n lodash.toPath = toPath;\r\n lodash.toPlainObject = toPlainObject;\r\n lodash.transform = transform;\r\n lodash.unary = unary;\r\n lodash.union = union;\r\n lodash.unionBy = unionBy;\r\n lodash.unionWith = unionWith;\r\n lodash.uniq = uniq;\r\n lodash.uniqBy = uniqBy;\r\n lodash.uniqWith = uniqWith;\r\n lodash.unset = unset;\r\n lodash.unzip = unzip;\r\n lodash.unzipWith = unzipWith;\r\n lodash.update = update;\r\n lodash.updateWith = updateWith;\r\n lodash.values = values;\r\n lodash.valuesIn = valuesIn;\r\n lodash.without = without;\r\n lodash.words = words;\r\n lodash.wrap = wrap;\r\n lodash.xor = xor;\r\n lodash.xorBy = xorBy;\r\n lodash.xorWith = xorWith;\r\n lodash.zip = zip;\r\n lodash.zipObject = zipObject;\r\n lodash.zipObjectDeep = zipObjectDeep;\r\n lodash.zipWith = zipWith;\r\n\r\n // Add aliases.\r\n lodash.entries = toPairs;\r\n lodash.entriesIn = toPairsIn;\r\n lodash.extend = assignIn;\r\n lodash.extendWith = assignInWith;\r\n\r\n // Add methods to `lodash.prototype`.\r\n mixin(lodash, lodash);\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n // Add methods that return unwrapped values in chain sequences.\r\n lodash.add = add;\r\n lodash.attempt = attempt;\r\n lodash.camelCase = camelCase;\r\n lodash.capitalize = capitalize;\r\n lodash.ceil = ceil;\r\n lodash.clamp = clamp;\r\n lodash.clone = clone;\r\n lodash.cloneDeep = cloneDeep;\r\n lodash.cloneDeepWith = cloneDeepWith;\r\n lodash.cloneWith = cloneWith;\r\n lodash.conformsTo = conformsTo;\r\n lodash.deburr = deburr;\r\n lodash.defaultTo = defaultTo;\r\n lodash.divide = divide;\r\n lodash.endsWith = endsWith;\r\n lodash.eq = eq;\r\n lodash.escape = escape;\r\n lodash.escapeRegExp = escapeRegExp;\r\n lodash.every = every;\r\n lodash.find = find;\r\n lodash.findIndex = findIndex;\r\n lodash.findKey = findKey;\r\n lodash.findLast = findLast;\r\n lodash.findLastIndex = findLastIndex;\r\n lodash.findLastKey = findLastKey;\r\n lodash.floor = floor;\r\n lodash.forEach = forEach;\r\n lodash.forEachRight = forEachRight;\r\n lodash.forIn = forIn;\r\n lodash.forInRight = forInRight;\r\n lodash.forOwn = forOwn;\r\n lodash.forOwnRight = forOwnRight;\r\n lodash.get = get;\r\n lodash.gt = gt;\r\n lodash.gte = gte;\r\n lodash.has = has;\r\n lodash.hasIn = hasIn;\r\n lodash.head = head;\r\n lodash.identity = identity;\r\n lodash.includes = includes;\r\n lodash.indexOf = indexOf;\r\n lodash.inRange = inRange;\r\n lodash.invoke = invoke;\r\n lodash.isArguments = isArguments;\r\n lodash.isArray = isArray;\r\n lodash.isArrayBuffer = isArrayBuffer;\r\n lodash.isArrayLike = isArrayLike;\r\n lodash.isArrayLikeObject = isArrayLikeObject;\r\n lodash.isBoolean = isBoolean;\r\n lodash.isBuffer = isBuffer;\r\n lodash.isDate = isDate;\r\n lodash.isElement = isElement;\r\n lodash.isEmpty = isEmpty;\r\n lodash.isEqual = isEqual;\r\n lodash.isEqualWith = isEqualWith;\r\n lodash.isError = isError;\r\n lodash.isFinite = isFinite;\r\n lodash.isFunction = isFunction;\r\n lodash.isInteger = isInteger;\r\n lodash.isLength = isLength;\r\n lodash.isMap = isMap;\r\n lodash.isMatch = isMatch;\r\n lodash.isMatchWith = isMatchWith;\r\n lodash.isNaN = isNaN;\r\n lodash.isNative = isNative;\r\n lodash.isNil = isNil;\r\n lodash.isNull = isNull;\r\n lodash.isNumber = isNumber;\r\n lodash.isObject = isObject;\r\n lodash.isObjectLike = isObjectLike;\r\n lodash.isPlainObject = isPlainObject;\r\n lodash.isRegExp = isRegExp;\r\n lodash.isSafeInteger = isSafeInteger;\r\n lodash.isSet = isSet;\r\n lodash.isString = isString;\r\n lodash.isSymbol = isSymbol;\r\n lodash.isTypedArray = isTypedArray;\r\n lodash.isUndefined = isUndefined;\r\n lodash.isWeakMap = isWeakMap;\r\n lodash.isWeakSet = isWeakSet;\r\n lodash.join = join;\r\n lodash.kebabCase = kebabCase;\r\n lodash.last = last;\r\n lodash.lastIndexOf = lastIndexOf;\r\n lodash.lowerCase = lowerCase;\r\n lodash.lowerFirst = lowerFirst;\r\n lodash.lt = lt;\r\n lodash.lte = lte;\r\n lodash.max = max;\r\n lodash.maxBy = maxBy;\r\n lodash.mean = mean;\r\n lodash.meanBy = meanBy;\r\n lodash.min = min;\r\n lodash.minBy = minBy;\r\n lodash.stubArray = stubArray;\r\n lodash.stubFalse = stubFalse;\r\n lodash.stubObject = stubObject;\r\n lodash.stubString = stubString;\r\n lodash.stubTrue = stubTrue;\r\n lodash.multiply = multiply;\r\n lodash.nth = nth;\r\n lodash.noConflict = noConflict;\r\n lodash.noop = noop;\r\n lodash.now = now;\r\n lodash.pad = pad;\r\n lodash.padEnd = padEnd;\r\n lodash.padStart = padStart;\r\n lodash.parseInt = parseInt;\r\n lodash.random = random;\r\n lodash.reduce = reduce;\r\n lodash.reduceRight = reduceRight;\r\n lodash.repeat = repeat;\r\n lodash.replace = replace;\r\n lodash.result = result;\r\n lodash.round = round;\r\n lodash.runInContext = runInContext;\r\n lodash.sample = sample;\r\n lodash.size = size;\r\n lodash.snakeCase = snakeCase;\r\n lodash.some = some;\r\n lodash.sortedIndex = sortedIndex;\r\n lodash.sortedIndexBy = sortedIndexBy;\r\n lodash.sortedIndexOf = sortedIndexOf;\r\n lodash.sortedLastIndex = sortedLastIndex;\r\n lodash.sortedLastIndexBy = sortedLastIndexBy;\r\n lodash.sortedLastIndexOf = sortedLastIndexOf;\r\n lodash.startCase = startCase;\r\n lodash.startsWith = startsWith;\r\n lodash.subtract = subtract;\r\n lodash.sum = sum;\r\n lodash.sumBy = sumBy;\r\n lodash.template = template;\r\n lodash.times = times;\r\n lodash.toFinite = toFinite;\r\n lodash.toInteger = toInteger;\r\n lodash.toLength = toLength;\r\n lodash.toLower = toLower;\r\n lodash.toNumber = toNumber;\r\n lodash.toSafeInteger = toSafeInteger;\r\n lodash.toString = toString;\r\n lodash.toUpper = toUpper;\r\n lodash.trim = trim;\r\n lodash.trimEnd = trimEnd;\r\n lodash.trimStart = trimStart;\r\n lodash.truncate = truncate;\r\n lodash.unescape = unescape;\r\n lodash.uniqueId = uniqueId;\r\n lodash.upperCase = upperCase;\r\n lodash.upperFirst = upperFirst;\r\n\r\n // Add aliases.\r\n lodash.each = forEach;\r\n lodash.eachRight = forEachRight;\r\n lodash.first = head;\r\n\r\n mixin(lodash, (function() {\r\n var source = {};\r\n baseForOwn(lodash, function(func, methodName) {\r\n if (!hasOwnProperty.call(lodash.prototype, methodName)) {\r\n source[methodName] = func;\r\n }\r\n });\r\n return source;\r\n }()), { 'chain': false });\r\n\r\n /*------------------------------------------------------------------------*/\r\n\r\n /**\r\n * The semantic version number.\r\n *\r\n * @static\r\n * @memberOf _\r\n * @type {string}\r\n */\r\n lodash.VERSION = VERSION;\r\n\r\n // Assign default placeholders.\r\n arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) {\r\n lodash[methodName].placeholder = lodash;\r\n });\r\n\r\n // Add `LazyWrapper` methods for `_.drop` and `_.take` variants.\r\n arrayEach(['drop', 'take'], function(methodName, index) {\r\n LazyWrapper.prototype[methodName] = function(n) {\r\n n = n === undefined ? 1 : nativeMax(toInteger(n), 0);\r\n\r\n var result = (this.__filtered__ && !index)\r\n ? new LazyWrapper(this)\r\n : this.clone();\r\n\r\n if (result.__filtered__) {\r\n result.__takeCount__ = nativeMin(n, result.__takeCount__);\r\n } else {\r\n result.__views__.push({\r\n 'size': nativeMin(n, MAX_ARRAY_LENGTH),\r\n 'type': methodName + (result.__dir__ < 0 ? 'Right' : '')\r\n });\r\n }\r\n return result;\r\n };\r\n\r\n LazyWrapper.prototype[methodName + 'Right'] = function(n) {\r\n return this.reverse()[methodName](n).reverse();\r\n };\r\n });\r\n\r\n // Add `LazyWrapper` methods that accept an `iteratee` value.\r\n arrayEach(['filter', 'map', 'takeWhile'], function(methodName, index) {\r\n var type = index + 1,\r\n isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG;\r\n\r\n LazyWrapper.prototype[methodName] = function(iteratee) {\r\n var result = this.clone();\r\n result.__iteratees__.push({\r\n 'iteratee': getIteratee(iteratee, 3),\r\n 'type': type\r\n });\r\n result.__filtered__ = result.__filtered__ || isFilter;\r\n return result;\r\n };\r\n });\r\n\r\n // Add `LazyWrapper` methods for `_.head` and `_.last`.\r\n arrayEach(['head', 'last'], function(methodName, index) {\r\n var takeName = 'take' + (index ? 'Right' : '');\r\n\r\n LazyWrapper.prototype[methodName] = function() {\r\n return this[takeName](1).value()[0];\r\n };\r\n });\r\n\r\n // Add `LazyWrapper` methods for `_.initial` and `_.tail`.\r\n arrayEach(['initial', 'tail'], function(methodName, index) {\r\n var dropName = 'drop' + (index ? '' : 'Right');\r\n\r\n LazyWrapper.prototype[methodName] = function() {\r\n return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1);\r\n };\r\n });\r\n\r\n LazyWrapper.prototype.compact = function() {\r\n return this.filter(identity);\r\n };\r\n\r\n LazyWrapper.prototype.find = function(predicate) {\r\n return this.filter(predicate).head();\r\n };\r\n\r\n LazyWrapper.prototype.findLast = function(predicate) {\r\n return this.reverse().find(predicate);\r\n };\r\n\r\n LazyWrapper.prototype.invokeMap = baseRest(function(path, args) {\r\n if (typeof path == 'function') {\r\n return new LazyWrapper(this);\r\n }\r\n return this.map(function(value) {\r\n return baseInvoke(value, path, args);\r\n });\r\n });\r\n\r\n LazyWrapper.prototype.reject = function(predicate) {\r\n return this.filter(negate(getIteratee(predicate)));\r\n };\r\n\r\n LazyWrapper.prototype.slice = function(start, end) {\r\n start = toInteger(start);\r\n\r\n var result = this;\r\n if (result.__filtered__ && (start > 0 || end < 0)) {\r\n return new LazyWrapper(result);\r\n }\r\n if (start < 0) {\r\n result = result.takeRight(-start);\r\n } else if (start) {\r\n result = result.drop(start);\r\n }\r\n if (end !== undefined) {\r\n end = toInteger(end);\r\n result = end < 0 ? result.dropRight(-end) : result.take(end - start);\r\n }\r\n return result;\r\n };\r\n\r\n LazyWrapper.prototype.takeRightWhile = function(predicate) {\r\n return this.reverse().takeWhile(predicate).reverse();\r\n };\r\n\r\n LazyWrapper.prototype.toArray = function() {\r\n return this.take(MAX_ARRAY_LENGTH);\r\n };\r\n\r\n // Add `LazyWrapper` methods to `lodash.prototype`.\r\n baseForOwn(LazyWrapper.prototype, function(func, methodName) {\r\n var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName),\r\n isTaker = /^(?:head|last)$/.test(methodName),\r\n lodashFunc = lodash[isTaker ? ('take' + (methodName == 'last' ? 'Right' : '')) : methodName],\r\n retUnwrapped = isTaker || /^find/.test(methodName);\r\n\r\n if (!lodashFunc) {\r\n return;\r\n }\r\n lodash.prototype[methodName] = function() {\r\n var value = this.__wrapped__,\r\n args = isTaker ? 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}