time-to-botec

lodash.js (544098B)

---

 /**
  * @license
  * Lodash <https://lodash.com/>
  * Copyright OpenJS Foundation and other contributors <https://openjsf.org/>
  * Released under MIT license <https://lodash.com/license>
  * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
  * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
  */
 ;(function() {
 
   /** Used as a safe reference for `undefined` in pre-ES5 environments. */
   var undefined;
 
   /** Used as the semantic version number. */
   var VERSION = '4.17.21';
 
   /** Used as the size to enable large array optimizations. */
   var LARGE_ARRAY_SIZE = 200;
 
   /** Error message constants. */
   var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',
       FUNC_ERROR_TEXT = 'Expected a function',
       INVALID_TEMPL_VAR_ERROR_TEXT = 'Invalid `variable` option passed into `_.template`';
 
   /** Used to stand-in for `undefined` hash values. */
   var HASH_UNDEFINED = '__lodash_hash_undefined__';
 
   /** Used as the maximum memoize cache size. */
   var MAX_MEMOIZE_SIZE = 500;
 
   /** Used as the internal argument placeholder. */
   var PLACEHOLDER = '__lodash_placeholder__';
 
   /** Used to compose bitmasks for cloning. */
   var CLONE_DEEP_FLAG = 1,
       CLONE_FLAT_FLAG = 2,
       CLONE_SYMBOLS_FLAG = 4;
 
   /** Used to compose bitmasks for value comparisons. */
   var COMPARE_PARTIAL_FLAG = 1,
       COMPARE_UNORDERED_FLAG = 2;
 
   /** Used to compose bitmasks for function metadata. */
   var WRAP_BIND_FLAG = 1,
       WRAP_BIND_KEY_FLAG = 2,
       WRAP_CURRY_BOUND_FLAG = 4,
       WRAP_CURRY_FLAG = 8,
       WRAP_CURRY_RIGHT_FLAG = 16,
       WRAP_PARTIAL_FLAG = 32,
       WRAP_PARTIAL_RIGHT_FLAG = 64,
       WRAP_ARY_FLAG = 128,
       WRAP_REARG_FLAG = 256,
       WRAP_FLIP_FLAG = 512;
 
   /** Used as default options for `_.truncate`. */
   var DEFAULT_TRUNC_LENGTH = 30,
       DEFAULT_TRUNC_OMISSION = '...';
 
   /** Used to detect hot functions by number of calls within a span of milliseconds. */
   var HOT_COUNT = 800,
       HOT_SPAN = 16;
 
   /** Used to indicate the type of lazy iteratees. */
   var LAZY_FILTER_FLAG = 1,
       LAZY_MAP_FLAG = 2,
       LAZY_WHILE_FLAG = 3;
 
   /** Used as references for various `Number` constants. */
   var INFINITY = 1 / 0,
       MAX_SAFE_INTEGER = 9007199254740991,
       MAX_INTEGER = 1.7976931348623157e+308,
       NAN = 0 / 0;
 
   /** Used as references for the maximum length and index of an array. */
   var MAX_ARRAY_LENGTH = 4294967295,
       MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,
       HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;
 
   /** Used to associate wrap methods with their bit flags. */
   var wrapFlags = [
     ['ary', WRAP_ARY_FLAG],
     ['bind', WRAP_BIND_FLAG],
     ['bindKey', WRAP_BIND_KEY_FLAG],
     ['curry', WRAP_CURRY_FLAG],
     ['curryRight', WRAP_CURRY_RIGHT_FLAG],
     ['flip', WRAP_FLIP_FLAG],
     ['partial', WRAP_PARTIAL_FLAG],
     ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],
     ['rearg', WRAP_REARG_FLAG]
   ];
 
   /** `Object#toString` result references. */
   var argsTag = '[object Arguments]',
       arrayTag = '[object Array]',
       asyncTag = '[object AsyncFunction]',
       boolTag = '[object Boolean]',
       dateTag = '[object Date]',
       domExcTag = '[object DOMException]',
       errorTag = '[object Error]',
       funcTag = '[object Function]',
       genTag = '[object GeneratorFunction]',
       mapTag = '[object Map]',
       numberTag = '[object Number]',
       nullTag = '[object Null]',
       objectTag = '[object Object]',
       promiseTag = '[object Promise]',
       proxyTag = '[object Proxy]',
       regexpTag = '[object RegExp]',
       setTag = '[object Set]',
       stringTag = '[object String]',
       symbolTag = '[object Symbol]',
       undefinedTag = '[object Undefined]',
       weakMapTag = '[object WeakMap]',
       weakSetTag = '[object WeakSet]';
 
   var arrayBufferTag = '[object ArrayBuffer]',
       dataViewTag = '[object DataView]',
       float32Tag = '[object Float32Array]',
       float64Tag = '[object Float64Array]',
       int8Tag = '[object Int8Array]',
       int16Tag = '[object Int16Array]',
       int32Tag = '[object Int32Array]',
       uint8Tag = '[object Uint8Array]',
       uint8ClampedTag = '[object Uint8ClampedArray]',
       uint16Tag = '[object Uint16Array]',
       uint32Tag = '[object Uint32Array]';
 
   /** Used to match empty string literals in compiled template source. */
   var reEmptyStringLeading = /\b__p \+= '';/g,
       reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
       reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;
 
   /** Used to match HTML entities and HTML characters. */
   var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,
       reUnescapedHtml = /[&<>"']/g,
       reHasEscapedHtml = RegExp(reEscapedHtml.source),
       reHasUnescapedHtml = RegExp(reUnescapedHtml.source);
 
   /** Used to match template delimiters. */
   var reEscape = /<%-([\s\S]+?)%>/g,
       reEvaluate = /<%([\s\S]+?)%>/g,
       reInterpolate = /<%=([\s\S]+?)%>/g;
 
   /** Used to match property names within property paths. */
   var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
       reIsPlainProp = /^\w*$/,
       rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;
 
   /**
    * Used to match `RegExp`
    * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
    */
   var reRegExpChar = /[\\^$.*+?()[\]{}|]/g,
       reHasRegExpChar = RegExp(reRegExpChar.source);
 
   /** Used to match leading whitespace. */
   var reTrimStart = /^\s+/;
 
   /** Used to match a single whitespace character. */
   var reWhitespace = /\s/;
 
   /** Used to match wrap detail comments. */
   var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/,
       reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/,
       reSplitDetails = /,? & /;
 
   /** Used to match words composed of alphanumeric characters. */
   var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g;
 
   /**
    * Used to validate the `validate` option in `_.template` variable.
    *
    * Forbids characters which could potentially change the meaning of the function argument definition:
    * - "()," (modification of function parameters)
    * - "=" (default value)
    * - "[]{}" (destructuring of function parameters)
    * - "/" (beginning of a comment)
    * - whitespace
    */
   var reForbiddenIdentifierChars = /[()=,{}\[\]\/\s]/;
 
   /** Used to match backslashes in property paths. */
   var reEscapeChar = /\\(\\)?/g;
 
   /**
    * Used to match
    * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).
    */
   var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;
 
   /** Used to match `RegExp` flags from their coerced string values. */
   var reFlags = /\w*$/;
 
   /** Used to detect bad signed hexadecimal string values. */
   var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;
 
   /** Used to detect binary string values. */
   var reIsBinary = /^0b[01]+$/i;
 
   /** Used to detect host constructors (Safari). */
   var reIsHostCtor = /^\[object .+?Constructor\]$/;
 
   /** Used to detect octal string values. */
   var reIsOctal = /^0o[0-7]+$/i;
 
   /** Used to detect unsigned integer values. */
   var reIsUint = /^(?:0|[1-9]\d*)$/;
 
   /** Used to match Latin Unicode letters (excluding mathematical operators). */
   var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;
 
   /** Used to ensure capturing order of template delimiters. */
   var reNoMatch = /($^)/;
 
   /** Used to match unescaped characters in compiled string literals. */
   var reUnescapedString = /['\n\r\u2028\u2029\\]/g;
 
   /** Used to compose unicode character classes. */
   var rsAstralRange = '\\ud800-\\udfff',
       rsComboMarksRange = '\\u0300-\\u036f',
       reComboHalfMarksRange = '\\ufe20-\\ufe2f',
       rsComboSymbolsRange = '\\u20d0-\\u20ff',
       rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
       rsDingbatRange = '\\u2700-\\u27bf',
       rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff',
       rsMathOpRange = '\\xac\\xb1\\xd7\\xf7',
       rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf',
       rsPunctuationRange = '\\u2000-\\u206f',
       rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000',
       rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde',
       rsVarRange = '\\ufe0e\\ufe0f',
       rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;
 
   /** Used to compose unicode capture groups. */
   var rsApos = "['\u2019]",
       rsAstral = '[' + rsAstralRange + ']',
       rsBreak = '[' + rsBreakRange + ']',
       rsCombo = '[' + rsComboRange + ']',
       rsDigits = '\\d+',
       rsDingbat = '[' + rsDingbatRange + ']',
       rsLower = '[' + rsLowerRange + ']',
       rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',
       rsFitz = '\\ud83c[\\udffb-\\udfff]',
       rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
       rsNonAstral = '[^' + rsAstralRange + ']',
       rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
       rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
       rsUpper = '[' + rsUpperRange + ']',
       rsZWJ = '\\u200d';
 
   /** Used to compose unicode regexes. */
   var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',
       rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',
       rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',
       rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',
       reOptMod = rsModifier + '?',
       rsOptVar = '[' + rsVarRange + ']?',
       rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
       rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])',
       rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])',
       rsSeq = rsOptVar + reOptMod + rsOptJoin,
       rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,
       rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
 
   /** Used to match apostrophes. */
   var reApos = RegExp(rsApos, 'g');
 
   /**
    * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and
    * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).
    */
   var reComboMark = RegExp(rsCombo, 'g');
 
   /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
   var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
 
   /** Used to match complex or compound words. */
   var reUnicodeWord = RegExp([
     rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',
     rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',
     rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,
     rsUpper + '+' + rsOptContrUpper,
     rsOrdUpper,
     rsOrdLower,
     rsDigits,
     rsEmoji
   ].join('|'), 'g');
 
   /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
   var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboRange + rsVarRange + ']');
 
   /** Used to detect strings that need a more robust regexp to match words. */
   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 ]/;
 
   /** Used to assign default `context` object properties. */
   var contextProps = [
     'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',
     'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',
     'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',
     'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',
     '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'
   ];
 
   /** Used to make template sourceURLs easier to identify. */
   var templateCounter = -1;
 
   /** Used to identify `toStringTag` values of typed arrays. */
   var typedArrayTags = {};
   typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
   typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
   typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
   typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
   typedArrayTags[uint32Tag] = true;
   typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
   typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
   typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =
   typedArrayTags[errorTag] = typedArrayTags[funcTag] =
   typedArrayTags[mapTag] = typedArrayTags[numberTag] =
   typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
   typedArrayTags[setTag] = typedArrayTags[stringTag] =
   typedArrayTags[weakMapTag] = false;
 
   /** Used to identify `toStringTag` values supported by `_.clone`. */
   var cloneableTags = {};
   cloneableTags[argsTag] = cloneableTags[arrayTag] =
   cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =
   cloneableTags[boolTag] = cloneableTags[dateTag] =
   cloneableTags[float32Tag] = cloneableTags[float64Tag] =
   cloneableTags[int8Tag] = cloneableTags[int16Tag] =
   cloneableTags[int32Tag] = cloneableTags[mapTag] =
   cloneableTags[numberTag] = cloneableTags[objectTag] =
   cloneableTags[regexpTag] = cloneableTags[setTag] =
   cloneableTags[stringTag] = cloneableTags[symbolTag] =
   cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =
   cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;
   cloneableTags[errorTag] = cloneableTags[funcTag] =
   cloneableTags[weakMapTag] = false;
 
   /** Used to map Latin Unicode letters to basic Latin letters. */
   var deburredLetters = {
     // Latin-1 Supplement block.
     '\xc0': 'A',  '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A',
     '\xe0': 'a',  '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a',
     '\xc7': 'C',  '\xe7': 'c',
     '\xd0': 'D',  '\xf0': 'd',
     '\xc8': 'E',  '\xc9': 'E', '\xca': 'E', '\xcb': 'E',
     '\xe8': 'e',  '\xe9': 'e', '\xea': 'e', '\xeb': 'e',
     '\xcc': 'I',  '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
     '\xec': 'i',  '\xed': 'i', '\xee': 'i', '\xef': 'i',
     '\xd1': 'N',  '\xf1': 'n',
     '\xd2': 'O',  '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O',
     '\xf2': 'o',  '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o',
     '\xd9': 'U',  '\xda': 'U', '\xdb': 'U', '\xdc': 'U',
     '\xf9': 'u',  '\xfa': 'u', '\xfb': 'u', '\xfc': 'u',
     '\xdd': 'Y',  '\xfd': 'y', '\xff': 'y',
     '\xc6': 'Ae', '\xe6': 'ae',
     '\xde': 'Th', '\xfe': 'th',
     '\xdf': 'ss',
     // Latin Extended-A block.
     '\u0100': 'A',  '\u0102': 'A', '\u0104': 'A',
     '\u0101': 'a',  '\u0103': 'a', '\u0105': 'a',
     '\u0106': 'C',  '\u0108': 'C', '\u010a': 'C', '\u010c': 'C',
     '\u0107': 'c',  '\u0109': 'c', '\u010b': 'c', '\u010d': 'c',
     '\u010e': 'D',  '\u0110': 'D', '\u010f': 'd', '\u0111': 'd',
     '\u0112': 'E',  '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E',
     '\u0113': 'e',  '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e',
     '\u011c': 'G',  '\u011e': 'G', '\u0120': 'G', '\u0122': 'G',
     '\u011d': 'g',  '\u011f': 'g', '\u0121': 'g', '\u0123': 'g',
     '\u0124': 'H',  '\u0126': 'H', '\u0125': 'h', '\u0127': 'h',
     '\u0128': 'I',  '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I',
     '\u0129': 'i',  '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i',
     '\u0134': 'J',  '\u0135': 'j',
     '\u0136': 'K',  '\u0137': 'k', '\u0138': 'k',
     '\u0139': 'L',  '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L',
     '\u013a': 'l',  '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l',
     '\u0143': 'N',  '\u0145': 'N', '\u0147': 'N', '\u014a': 'N',
     '\u0144': 'n',  '\u0146': 'n', '\u0148': 'n', '\u014b': 'n',
     '\u014c': 'O',  '\u014e': 'O', '\u0150': 'O',
     '\u014d': 'o',  '\u014f': 'o', '\u0151': 'o',
     '\u0154': 'R',  '\u0156': 'R', '\u0158': 'R',
     '\u0155': 'r',  '\u0157': 'r', '\u0159': 'r',
     '\u015a': 'S',  '\u015c': 'S', '\u015e': 'S', '\u0160': 'S',
     '\u015b': 's',  '\u015d': 's', '\u015f': 's', '\u0161': 's',
     '\u0162': 'T',  '\u0164': 'T', '\u0166': 'T',
     '\u0163': 't',  '\u0165': 't', '\u0167': 't',
     '\u0168': 'U',  '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U',
     '\u0169': 'u',  '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u',
     '\u0174': 'W',  '\u0175': 'w',
     '\u0176': 'Y',  '\u0177': 'y', '\u0178': 'Y',
     '\u0179': 'Z',  '\u017b': 'Z', '\u017d': 'Z',
     '\u017a': 'z',  '\u017c': 'z', '\u017e': 'z',
     '\u0132': 'IJ', '\u0133': 'ij',
     '\u0152': 'Oe', '\u0153': 'oe',
     '\u0149': "'n", '\u017f': 's'
   };
 
   /** Used to map characters to HTML entities. */
   var htmlEscapes = {
     '&': '&amp;',
     '<': '&lt;',
     '>': '&gt;',
     '"': '&quot;',
     "'": '&#39;'
   };
 
   /** Used to map HTML entities to characters. */
   var htmlUnescapes = {
     '&amp;': '&',
     '&lt;': '<',
     '&gt;': '>',
     '&quot;': '"',
     '&#39;': "'"
   };
 
   /** Used to escape characters for inclusion in compiled string literals. */
   var stringEscapes = {
     '\\': '\\',
     "'": "'",
     '\n': 'n',
     '\r': 'r',
     '\u2028': 'u2028',
     '\u2029': 'u2029'
   };
 
   /** Built-in method references without a dependency on `root`. */
   var freeParseFloat = parseFloat,
       freeParseInt = parseInt;
 
   /** Detect free variable `global` from Node.js. */
   var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;
 
   /** Detect free variable `self`. */
   var freeSelf = typeof self == 'object' && self && self.Object === Object && self;
 
   /** Used as a reference to the global object. */
   var root = freeGlobal || freeSelf || Function('return this')();
 
   /** Detect free variable `exports`. */
   var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;
 
   /** Detect free variable `module`. */
   var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;
 
   /** Detect the popular CommonJS extension `module.exports`. */
   var moduleExports = freeModule && freeModule.exports === freeExports;
 
   /** Detect free variable `process` from Node.js. */
   var freeProcess = moduleExports && freeGlobal.process;
 
   /** Used to access faster Node.js helpers. */
   var nodeUtil = (function() {
     try {
       // Use `util.types` for Node.js 10+.
       var types = freeModule && freeModule.require && freeModule.require('util').types;
 
       if (types) {
         return types;
       }
 
       // Legacy `process.binding('util')` for Node.js < 10.
       return freeProcess && freeProcess.binding && freeProcess.binding('util');
     } catch (e) {}
   }());
 
   /* Node.js helper references. */
   var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,
       nodeIsDate = nodeUtil && nodeUtil.isDate,
       nodeIsMap = nodeUtil && nodeUtil.isMap,
       nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,
       nodeIsSet = nodeUtil && nodeUtil.isSet,
       nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;
 
   /*--------------------------------------------------------------------------*/
 
   /**
    * A faster alternative to `Function#apply`, this function invokes `func`
    * with the `this` binding of `thisArg` and the arguments of `args`.
    *
    * @private
    * @param {Function} func The function to invoke.
    * @param {*} thisArg The `this` binding of `func`.
    * @param {Array} args The arguments to invoke `func` with.
    * @returns {*} Returns the result of `func`.
    */
   function apply(func, thisArg, args) {
     switch (args.length) {
       case 0: return func.call(thisArg);
       case 1: return func.call(thisArg, args[0]);
       case 2: return func.call(thisArg, args[0], args[1]);
       case 3: return func.call(thisArg, args[0], args[1], args[2]);
     }
     return func.apply(thisArg, args);
   }
 
   /**
    * A specialized version of `baseAggregator` for arrays.
    *
    * @private
    * @param {Array} [array] The array to iterate over.
    * @param {Function} setter The function to set `accumulator` values.
    * @param {Function} iteratee The iteratee to transform keys.
    * @param {Object} accumulator The initial aggregated object.
    * @returns {Function} Returns `accumulator`.
    */
   function arrayAggregator(array, setter, iteratee, accumulator) {
     var index = -1,
         length = array == null ? 0 : array.length;
 
     while (++index < length) {
       var value = array[index];
       setter(accumulator, value, iteratee(value), array);
     }
     return accumulator;
   }
 
   /**
    * A specialized version of `_.forEach` for arrays without support for
    * iteratee shorthands.
    *
    * @private
    * @param {Array} [array] The array to iterate over.
    * @param {Function} iteratee The function invoked per iteration.
    * @returns {Array} Returns `array`.
    */
   function arrayEach(array, iteratee) {
     var index = -1,
         length = array == null ? 0 : array.length;
 
     while (++index < length) {
       if (iteratee(array[index], index, array) === false) {
         break;
       }
     }
     return array;
   }
 
   /**
    * A specialized version of `_.forEachRight` for arrays without support for
    * iteratee shorthands.
    *
    * @private
    * @param {Array} [array] The array to iterate over.
    * @param {Function} iteratee The function invoked per iteration.
    * @returns {Array} Returns `array`.
    */
   function arrayEachRight(array, iteratee) {
     var length = array == null ? 0 : array.length;
 
     while (length--) {
       if (iteratee(array[length], length, array) === false) {
         break;
       }
     }
     return array;
   }
 
   /**
    * A specialized version of `_.every` for arrays without support for
    * iteratee shorthands.
    *
    * @private
    * @param {Array} [array] The array to iterate over.
    * @param {Function} predicate The function invoked per iteration.
    * @returns {boolean} Returns `true` if all elements pass the predicate check,
    *  else `false`.
    */
   function arrayEvery(array, predicate) {
     var index = -1,
         length = array == null ? 0 : array.length;
 
     while (++index < length) {
       if (!predicate(array[index], index, array)) {
         return false;
       }
     }
     return true;
   }
 
   /**
    * A specialized version of `_.filter` for arrays without support for
    * iteratee shorthands.
    *
    * @private
    * @param {Array} [array] The array to iterate over.
    * @param {Function} predicate The function invoked per iteration.
    * @returns {Array} Returns the new filtered array.
    */
   function arrayFilter(array, predicate) {
     var index = -1,
         length = array == null ? 0 : array.length,
         resIndex = 0,
         result = [];
 
     while (++index < length) {
       var value = array[index];
       if (predicate(value, index, array)) {
         result[resIndex++] = value;
       }
     }
     return result;
   }
 
   /**
    * A specialized version of `_.includes` for arrays without support for
    * specifying an index to search from.
    *
    * @private
    * @param {Array} [array] The array to inspect.
    * @param {*} target The value to search for.
    * @returns {boolean} Returns `true` if `target` is found, else `false`.
    */
   function arrayIncludes(array, value) {
     var length = array == null ? 0 : array.length;
     return !!length && baseIndexOf(array, value, 0) > -1;
   }
 
   /**
    * This function is like `arrayIncludes` except that it accepts a comparator.
    *
    * @private
    * @param {Array} [array] The array to inspect.
    * @param {*} target The value to search for.
    * @param {Function} comparator The comparator invoked per element.
    * @returns {boolean} Returns `true` if `target` is found, else `false`.
    */
   function arrayIncludesWith(array, value, comparator) {
     var index = -1,
         length = array == null ? 0 : array.length;
 
     while (++index < length) {
       if (comparator(value, array[index])) {
         return true;
       }
     }
     return false;
   }
 
   /**
    * A specialized version of `_.map` for arrays without support for iteratee
    * shorthands.
    *
    * @private
    * @param {Array} [array] The array to iterate over.
    * @param {Function} iteratee The function invoked per iteration.
    * @returns {Array} Returns the new mapped array.
    */
   function arrayMap(array, iteratee) {
     var index = -1,
         length = array == null ? 0 : array.length,
         result = Array(length);
 
     while (++index < length) {
       result[index] = iteratee(array[index], index, array);
     }
     return result;
   }
 
   /**
    * Appends the elements of `values` to `array`.
    *
    * @private
    * @param {Array} array The array to modify.
    * @param {Array} values The values to append.
    * @returns {Array} Returns `array`.
    */
   function arrayPush(array, values) {
     var index = -1,
         length = values.length,
         offset = array.length;
 
     while (++index < length) {
       array[offset + index] = values[index];
     }
     return array;
   }
 
   /**
    * A specialized version of `_.reduce` for arrays without support for
    * iteratee shorthands.
    *
    * @private
    * @param {Array} [array] The array to iterate over.
    * @param {Function} iteratee The function invoked per iteration.
    * @param {*} [accumulator] The initial value.
    * @param {boolean} [initAccum] Specify using the first element of `array` as
    *  the initial value.
    * @returns {*} Returns the accumulated value.
    */
   function arrayReduce(array, iteratee, accumulator, initAccum) {
     var index = -1,
         length = array == null ? 0 : array.length;
 
     if (initAccum && length) {
       accumulator = array[++index];
     }
     while (++index < length) {
       accumulator = iteratee(accumulator, array[index], index, array);
     }
     return accumulator;
   }
 
   /**
    * A specialized version of `_.reduceRight` for arrays without support for
    * iteratee shorthands.
    *
    * @private
    * @param {Array} [array] The array to iterate over.
    * @param {Function} iteratee The function invoked per iteration.
    * @param {*} [accumulator] The initial value.
    * @param {boolean} [initAccum] Specify using the last element of `array` as
    *  the initial value.
    * @returns {*} Returns the accumulated value.
    */
   function arrayReduceRight(array, iteratee, accumulator, initAccum) {
     var length = array == null ? 0 : array.length;
     if (initAccum && length) {
       accumulator = array[--length];
     }
     while (length--) {
       accumulator = iteratee(accumulator, array[length], length, array);
     }
     return accumulator;
   }
 
   /**
    * A specialized version of `_.some` for arrays without support for iteratee
    * shorthands.
    *
    * @private
    * @param {Array} [array] The array to iterate over.
    * @param {Function} predicate The function invoked per iteration.
    * @returns {boolean} Returns `true` if any element passes the predicate check,
    *  else `false`.
    */
   function arraySome(array, predicate) {
     var index = -1,
         length = array == null ? 0 : array.length;
 
     while (++index < length) {
       if (predicate(array[index], index, array)) {
         return true;
       }
     }
     return false;
   }
 
   /**
    * Gets the size of an ASCII `string`.
    *
    * @private
    * @param {string} string The string inspect.
    * @returns {number} Returns the string size.
    */
   var asciiSize = baseProperty('length');
 
   /**
    * Converts an ASCII `string` to an array.
    *
    * @private
    * @param {string} string The string to convert.
    * @returns {Array} Returns the converted array.
    */
   function asciiToArray(string) {
     return string.split('');
   }
 
   /**
    * Splits an ASCII `string` into an array of its words.
    *
    * @private
    * @param {string} The string to inspect.
    * @returns {Array} Returns the words of `string`.
    */
   function asciiWords(string) {
     return string.match(reAsciiWord) || [];
   }
 
   /**
    * The base implementation of methods like `_.findKey` and `_.findLastKey`,
    * without support for iteratee shorthands, which iterates over `collection`
    * using `eachFunc`.
    *
    * @private
    * @param {Array|Object} collection The collection to inspect.
    * @param {Function} predicate The function invoked per iteration.
    * @param {Function} eachFunc The function to iterate over `collection`.
    * @returns {*} Returns the found element or its key, else `undefined`.
    */
   function baseFindKey(collection, predicate, eachFunc) {
     var result;
     eachFunc(collection, function(value, key, collection) {
       if (predicate(value, key, collection)) {
         result = key;
         return false;
       }
     });
     return result;
   }
 
   /**
    * The base implementation of `_.findIndex` and `_.findLastIndex` without
    * support for iteratee shorthands.
    *
    * @private
    * @param {Array} array The array to inspect.
    * @param {Function} predicate The function invoked per iteration.
    * @param {number} fromIndex The index to search from.
    * @param {boolean} [fromRight] Specify iterating from right to left.
    * @returns {number} Returns the index of the matched value, else `-1`.
    */
   function baseFindIndex(array, predicate, fromIndex, fromRight) {
     var length = array.length,
         index = fromIndex + (fromRight ? 1 : -1);
 
     while ((fromRight ? index-- : ++index < length)) {
       if (predicate(array[index], index, array)) {
         return index;
       }
     }
     return -1;
   }
 
   /**
    * The base implementation of `_.indexOf` without `fromIndex` bounds checks.
    *
    * @private
    * @param {Array} array The array to inspect.
    * @param {*} value The value to search for.
    * @param {number} fromIndex The index to search from.
    * @returns {number} Returns the index of the matched value, else `-1`.
    */
   function baseIndexOf(array, value, fromIndex) {
     return value === value
       ? strictIndexOf(array, value, fromIndex)
       : baseFindIndex(array, baseIsNaN, fromIndex);
   }
 
   /**
    * This function is like `baseIndexOf` except that it accepts a comparator.
    *
    * @private
    * @param {Array} array The array to inspect.
    * @param {*} value The value to search for.
    * @param {number} fromIndex The index to search from.
    * @param {Function} comparator The comparator invoked per element.
    * @returns {number} Returns the index of the matched value, else `-1`.
    */
   function baseIndexOfWith(array, value, fromIndex, comparator) {
     var index = fromIndex - 1,
         length = array.length;
 
     while (++index < length) {
       if (comparator(array[index], value)) {
         return index;
       }
     }
     return -1;
   }
 
   /**
    * The base implementation of `_.isNaN` without support for number objects.
    *
    * @private
    * @param {*} value The value to check.
    * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
    */
   function baseIsNaN(value) {
     return value !== value;
   }
 
   /**
    * The base implementation of `_.mean` and `_.meanBy` without support for
    * iteratee shorthands.
    *
    * @private
    * @param {Array} array The array to iterate over.
    * @param {Function} iteratee The function invoked per iteration.
    * @returns {number} Returns the mean.
    */
   function baseMean(array, iteratee) {
     var length = array == null ? 0 : array.length;
     return length ? (baseSum(array, iteratee) / length) : NAN;
   }
 
   /**
    * The base implementation of `_.property` without support for deep paths.
    *
    * @private
    * @param {string} key The key of the property to get.
    * @returns {Function} Returns the new accessor function.
    */
   function baseProperty(key) {
     return function(object) {
       return object == null ? undefined : object[key];
     };
   }
 
   /**
    * The base implementation of `_.propertyOf` without support for deep paths.
    *
    * @private
    * @param {Object} object The object to query.
    * @returns {Function} Returns the new accessor function.
    */
   function basePropertyOf(object) {
     return function(key) {
       return object == null ? undefined : object[key];
     };
   }
 
   /**
    * The base implementation of `_.reduce` and `_.reduceRight`, without support
    * for iteratee shorthands, which iterates over `collection` using `eachFunc`.
    *
    * @private
    * @param {Array|Object} collection The collection to iterate over.
    * @param {Function} iteratee The function invoked per iteration.
    * @param {*} accumulator The initial value.
    * @param {boolean} initAccum Specify using the first or last element of
    *  `collection` as the initial value.
    * @param {Function} eachFunc The function to iterate over `collection`.
    * @returns {*} Returns the accumulated value.
    */
   function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {
     eachFunc(collection, function(value, index, collection) {
       accumulator = initAccum
         ? (initAccum = false, value)
         : iteratee(accumulator, value, index, collection);
     });
     return accumulator;
   }
 
   /**
    * The base implementation of `_.sortBy` which uses `comparer` to define the
    * sort order of `array` and replaces criteria objects with their corresponding
    * values.
    *
    * @private
    * @param {Array} array The array to sort.
    * @param {Function} comparer The function to define sort order.
    * @returns {Array} Returns `array`.
    */
   function baseSortBy(array, comparer) {
     var length = array.length;
 
     array.sort(comparer);
     while (length--) {
       array[length] = array[length].value;
     }
     return array;
   }
 
   /**
    * The base implementation of `_.sum` and `_.sumBy` without support for
    * iteratee shorthands.
    *
    * @private
    * @param {Array} array The array to iterate over.
    * @param {Function} iteratee The function invoked per iteration.
    * @returns {number} Returns the sum.
    */
   function baseSum(array, iteratee) {
     var result,
         index = -1,
         length = array.length;
 
     while (++index < length) {
       var current = iteratee(array[index]);
       if (current !== undefined) {
         result = result === undefined ? current : (result + current);
       }
     }
     return result;
   }
 
   /**
    * The base implementation of `_.times` without support for iteratee shorthands
    * or max array length checks.
    *
    * @private
    * @param {number} n The number of times to invoke `iteratee`.
    * @param {Function} iteratee The function invoked per iteration.
    * @returns {Array} Returns the array of results.
    */
   function baseTimes(n, iteratee) {
     var index = -1,
         result = Array(n);
 
     while (++index < n) {
       result[index] = iteratee(index);
     }
     return result;
   }
 
   /**
    * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array
    * of key-value pairs for `object` corresponding to the property names of `props`.
    *
    * @private
    * @param {Object} object The object to query.
    * @param {Array} props The property names to get values for.
    * @returns {Object} Returns the key-value pairs.
    */
   function baseToPairs(object, props) {
     return arrayMap(props, function(key) {
       return [key, object[key]];
     });
   }
 
   /**
    * The base implementation of `_.trim`.
    *
    * @private
    * @param {string} string The string to trim.
    * @returns {string} Returns the trimmed string.
    */
   function baseTrim(string) {
     return string
       ? string.slice(0, trimmedEndIndex(string) + 1).replace(reTrimStart, '')
       : string;
   }
 
   /**
    * The base implementation of `_.unary` without support for storing metadata.
    *
    * @private
    * @param {Function} func The function to cap arguments for.
    * @returns {Function} Returns the new capped function.
    */
   function baseUnary(func) {
     return function(value) {
       return func(value);
     };
   }
 
   /**
    * The base implementation of `_.values` and `_.valuesIn` which creates an
    * array of `object` property values corresponding to the property names
    * of `props`.
    *
    * @private
    * @param {Object} object The object to query.
    * @param {Array} props The property names to get values for.
    * @returns {Object} Returns the array of property values.
    */
   function baseValues(object, props) {
     return arrayMap(props, function(key) {
       return object[key];
     });
   }
 
   /**
    * Checks if a `cache` value for `key` exists.
    *
    * @private
    * @param {Object} cache The cache to query.
    * @param {string} key The key of the entry to check.
    * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
    */
   function cacheHas(cache, key) {
     return cache.has(key);
   }
 
   /**
    * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol
    * that is not found in the character symbols.
    *
    * @private
    * @param {Array} strSymbols The string symbols to inspect.
    * @param {Array} chrSymbols The character symbols to find.
    * @returns {number} Returns the index of the first unmatched string symbol.
    */
   function charsStartIndex(strSymbols, chrSymbols) {
     var index = -1,
         length = strSymbols.length;
 
     while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
     return index;
   }
 
   /**
    * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol
    * that is not found in the character symbols.
    *
    * @private
    * @param {Array} strSymbols The string symbols to inspect.
    * @param {Array} chrSymbols The character symbols to find.
    * @returns {number} Returns the index of the last unmatched string symbol.
    */
   function charsEndIndex(strSymbols, chrSymbols) {
     var index = strSymbols.length;
 
     while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
     return index;
   }
 
   /**
    * Gets the number of `placeholder` occurrences in `array`.
    *
    * @private
    * @param {Array} array The array to inspect.
    * @param {*} placeholder The placeholder to search for.
    * @returns {number} Returns the placeholder count.
    */
   function countHolders(array, placeholder) {
     var length = array.length,
         result = 0;
 
     while (length--) {
       if (array[length] === placeholder) {
         ++result;
       }
     }
     return result;
   }
 
   /**
    * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A
    * letters to basic Latin letters.
    *
    * @private
    * @param {string} letter The matched letter to deburr.
    * @returns {string} Returns the deburred letter.
    */
   var deburrLetter = basePropertyOf(deburredLetters);
 
   /**
    * Used by `_.escape` to convert characters to HTML entities.
    *
    * @private
    * @param {string} chr The matched character to escape.
    * @returns {string} Returns the escaped character.
    */
   var escapeHtmlChar = basePropertyOf(htmlEscapes);
 
   /**
    * Used by `_.template` to escape characters for inclusion in compiled string literals.
    *
    * @private
    * @param {string} chr The matched character to escape.
    * @returns {string} Returns the escaped character.
    */
   function escapeStringChar(chr) {
     return '\\' + stringEscapes[chr];
   }
 
   /**
    * Gets the value at `key` of `object`.
    *
    * @private
    * @param {Object} [object] The object to query.
    * @param {string} key The key of the property to get.
    * @returns {*} Returns the property value.
    */
   function getValue(object, key) {
     return object == null ? undefined : object[key];
   }
 
   /**
    * Checks if `string` contains Unicode symbols.
    *
    * @private
    * @param {string} string The string to inspect.
    * @returns {boolean} Returns `true` if a symbol is found, else `false`.
    */
   function hasUnicode(string) {
     return reHasUnicode.test(string);
   }
 
   /**
    * Checks if `string` contains a word composed of Unicode symbols.
    *
    * @private
    * @param {string} string The string to inspect.
    * @returns {boolean} Returns `true` if a word is found, else `false`.
    */
   function hasUnicodeWord(string) {
     return reHasUnicodeWord.test(string);
   }
 
   /**
    * Converts `iterator` to an array.
    *
    * @private
    * @param {Object} iterator The iterator to convert.
    * @returns {Array} Returns the converted array.
    */
   function iteratorToArray(iterator) {
     var data,
         result = [];
 
     while (!(data = iterator.next()).done) {
       result.push(data.value);
     }
     return result;
   }
 
   /**
    * Converts `map` to its key-value pairs.
    *
    * @private
    * @param {Object} map The map to convert.
    * @returns {Array} Returns the key-value pairs.
    */
   function mapToArray(map) {
     var index = -1,
         result = Array(map.size);
 
     map.forEach(function(value, key) {
       result[++index] = [key, value];
     });
     return result;
   }
 
   /**
    * Creates a unary function that invokes `func` with its argument transformed.
    *
    * @private
    * @param {Function} func The function to wrap.
    * @param {Function} transform The argument transform.
    * @returns {Function} Returns the new function.
    */
   function overArg(func, transform) {
     return function(arg) {
       return func(transform(arg));
     };
   }
 
   /**
    * Replaces all `placeholder` elements in `array` with an internal placeholder
    * and returns an array of their indexes.
    *
    * @private
    * @param {Array} array The array to modify.
    * @param {*} placeholder The placeholder to replace.
    * @returns {Array} Returns the new array of placeholder indexes.
    */
   function replaceHolders(array, placeholder) {
     var index = -1,
         length = array.length,
         resIndex = 0,
         result = [];
 
     while (++index < length) {
       var value = array[index];
       if (value === placeholder || value === PLACEHOLDER) {
         array[index] = PLACEHOLDER;
         result[resIndex++] = index;
       }
     }
     return result;
   }
 
   /**
    * Converts `set` to an array of its values.
    *
    * @private
    * @param {Object} set The set to convert.
    * @returns {Array} Returns the values.
    */
   function setToArray(set) {
     var index = -1,
         result = Array(set.size);
 
     set.forEach(function(value) {
       result[++index] = value;
     });
     return result;
   }
 
   /**
    * Converts `set` to its value-value pairs.
    *
    * @private
    * @param {Object} set The set to convert.
    * @returns {Array} Returns the value-value pairs.
    */
   function setToPairs(set) {
     var index = -1,
         result = Array(set.size);
 
     set.forEach(function(value) {
       result[++index] = [value, value];
     });
     return result;
   }
 
   /**
    * A specialized version of `_.indexOf` which performs strict equality
    * comparisons of values, i.e. `===`.
    *
    * @private
    * @param {Array} array The array to inspect.
    * @param {*} value The value to search for.
    * @param {number} fromIndex The index to search from.
    * @returns {number} Returns the index of the matched value, else `-1`.
    */
   function strictIndexOf(array, value, fromIndex) {
     var index = fromIndex - 1,
         length = array.length;
 
     while (++index < length) {
       if (array[index] === value) {
         return index;
       }
     }
     return -1;
   }
 
   /**
    * A specialized version of `_.lastIndexOf` which performs strict equality
    * comparisons of values, i.e. `===`.
    *
    * @private
    * @param {Array} array The array to inspect.
    * @param {*} value The value to search for.
    * @param {number} fromIndex The index to search from.
    * @returns {number} Returns the index of the matched value, else `-1`.
    */
   function strictLastIndexOf(array, value, fromIndex) {
     var index = fromIndex + 1;
     while (index--) {
       if (array[index] === value) {
         return index;
       }
     }
     return index;
   }
 
   /**
    * Gets the number of symbols in `string`.
    *
    * @private
    * @param {string} string The string to inspect.
    * @returns {number} Returns the string size.
    */
   function stringSize(string) {
     return hasUnicode(string)
       ? unicodeSize(string)
       : asciiSize(string);
   }
 
   /**
    * Converts `string` to an array.
    *
    * @private
    * @param {string} string The string to convert.
    * @returns {Array} Returns the converted array.
    */
   function stringToArray(string) {
     return hasUnicode(string)
       ? unicodeToArray(string)
       : asciiToArray(string);
   }
 
   /**
    * Used by `_.trim` and `_.trimEnd` to get the index of the last non-whitespace
    * character of `string`.
    *
    * @private
    * @param {string} string The string to inspect.
    * @returns {number} Returns the index of the last non-whitespace character.
    */
   function trimmedEndIndex(string) {
     var index = string.length;
 
     while (index-- && reWhitespace.test(string.charAt(index))) {}
     return index;
   }
 
   /**
    * Used by `_.unescape` to convert HTML entities to characters.
    *
    * @private
    * @param {string} chr The matched character to unescape.
    * @returns {string} Returns the unescaped character.
    */
   var unescapeHtmlChar = basePropertyOf(htmlUnescapes);
 
   /**
    * Gets the size of a Unicode `string`.
    *
    * @private
    * @param {string} string The string inspect.
    * @returns {number} Returns the string size.
    */
   function unicodeSize(string) {
     var result = reUnicode.lastIndex = 0;
     while (reUnicode.test(string)) {
       ++result;
     }
     return result;
   }
 
   /**
    * Converts a Unicode `string` to an array.
    *
    * @private
    * @param {string} string The string to convert.
    * @returns {Array} Returns the converted array.
    */
   function unicodeToArray(string) {
     return string.match(reUnicode) || [];
   }
 
   /**
    * Splits a Unicode `string` into an array of its words.
    *
    * @private
    * @param {string} The string to inspect.
    * @returns {Array} Returns the words of `string`.
    */
   function unicodeWords(string) {
     return string.match(reUnicodeWord) || [];
   }
 
   /*--------------------------------------------------------------------------*/
 
   /**
    * Create a new pristine `lodash` function using the `context` object.
    *
    * @static
    * @memberOf _
    * @since 1.1.0
    * @category Util
    * @param {Object} [context=root] The context object.
    * @returns {Function} Returns a new `lodash` function.
    * @example
    *
    * _.mixin({ 'foo': _.constant('foo') });
    *
    * var lodash = _.runInContext();
    * lodash.mixin({ 'bar': lodash.constant('bar') });
    *
    * _.isFunction(_.foo);
    * // => true
    * _.isFunction(_.bar);
    * // => false
    *
    * lodash.isFunction(lodash.foo);
    * // => false
    * lodash.isFunction(lodash.bar);
    * // => true
    *
    * // Create a suped-up `defer` in Node.js.
    * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;
    */
   var runInContext = (function runInContext(context) {
     context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));
 
     /** Built-in constructor references. */
     var Array = context.Array,
         Date = context.Date,
         Error = context.Error,
         Function = context.Function,
         Math = context.Math,
         Object = context.Object,
         RegExp = context.RegExp,
         String = context.String,
         TypeError = context.TypeError;
 
     /** Used for built-in method references. */
     var arrayProto = Array.prototype,
         funcProto = Function.prototype,
         objectProto = Object.prototype;
 
     /** Used to detect overreaching core-js shims. */
     var coreJsData = context['__core-js_shared__'];
 
     /** Used to resolve the decompiled source of functions. */
     var funcToString = funcProto.toString;
 
     /** Used to check objects for own properties. */
     var hasOwnProperty = objectProto.hasOwnProperty;
 
     /** Used to generate unique IDs. */
     var idCounter = 0;
 
     /** Used to detect methods masquerading as native. */
     var maskSrcKey = (function() {
       var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
       return uid ? ('Symbol(src)_1.' + uid) : '';
     }());
 
     /**
      * Used to resolve the
      * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
      * of values.
      */
     var nativeObjectToString = objectProto.toString;
 
     /** Used to infer the `Object` constructor. */
     var objectCtorString = funcToString.call(Object);
 
     /** Used to restore the original `_` reference in `_.noConflict`. */
     var oldDash = root._;
 
     /** Used to detect if a method is native. */
     var reIsNative = RegExp('^' +
       funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
       .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
     );
 
     /** Built-in value references. */
     var Buffer = moduleExports ? context.Buffer : undefined,
         Symbol = context.Symbol,
         Uint8Array = context.Uint8Array,
         allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,
         getPrototype = overArg(Object.getPrototypeOf, Object),
         objectCreate = Object.create,
         propertyIsEnumerable = objectProto.propertyIsEnumerable,
         splice = arrayProto.splice,
         spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined,
         symIterator = Symbol ? Symbol.iterator : undefined,
         symToStringTag = Symbol ? Symbol.toStringTag : undefined;
 
     var defineProperty = (function() {
       try {
         var func = getNative(Object, 'defineProperty');
         func({}, '', {});
         return func;
       } catch (e) {}
     }());
 
     /** Mocked built-ins. */
     var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,
         ctxNow = Date && Date.now !== root.Date.now && Date.now,
         ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;
 
     /* Built-in method references for those with the same name as other `lodash` methods. */
     var nativeCeil = Math.ceil,
         nativeFloor = Math.floor,
         nativeGetSymbols = Object.getOwnPropertySymbols,
         nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,
         nativeIsFinite = context.isFinite,
         nativeJoin = arrayProto.join,
         nativeKeys = overArg(Object.keys, Object),
         nativeMax = Math.max,
         nativeMin = Math.min,
         nativeNow = Date.now,
         nativeParseInt = context.parseInt,
         nativeRandom = Math.random,
         nativeReverse = arrayProto.reverse;
 
     /* Built-in method references that are verified to be native. */
     var DataView = getNative(context, 'DataView'),
         Map = getNative(context, 'Map'),
         Promise = getNative(context, 'Promise'),
         Set = getNative(context, 'Set'),
         WeakMap = getNative(context, 'WeakMap'),
         nativeCreate = getNative(Object, 'create');
 
     /** Used to store function metadata. */
     var metaMap = WeakMap && new WeakMap;
 
     /** Used to lookup unminified function names. */
     var realNames = {};
 
     /** Used to detect maps, sets, and weakmaps. */
     var dataViewCtorString = toSource(DataView),
         mapCtorString = toSource(Map),
         promiseCtorString = toSource(Promise),
         setCtorString = toSource(Set),
         weakMapCtorString = toSource(WeakMap);
 
     /** Used to convert symbols to primitives and strings. */
     var symbolProto = Symbol ? Symbol.prototype : undefined,
         symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,
         symbolToString = symbolProto ? symbolProto.toString : undefined;
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Creates a `lodash` object which wraps `value` to enable implicit method
      * chain sequences. Methods that operate on and return arrays, collections,
      * and functions can be chained together. Methods that retrieve a single value
      * or may return a primitive value will automatically end the chain sequence
      * and return the unwrapped value. Otherwise, the value must be unwrapped
      * with `_#value`.
      *
      * Explicit chain sequences, which must be unwrapped with `_#value`, may be
      * enabled using `_.chain`.
      *
      * The execution of chained methods is lazy, that is, it's deferred until
      * `_#value` is implicitly or explicitly called.
      *
      * Lazy evaluation allows several methods to support shortcut fusion.
      * Shortcut fusion is an optimization to merge iteratee calls; this avoids
      * the creation of intermediate arrays and can greatly reduce the number of
      * iteratee executions. Sections of a chain sequence qualify for shortcut
      * fusion if the section is applied to an array and iteratees accept only
      * one argument. The heuristic for whether a section qualifies for shortcut
      * fusion is subject to change.
      *
      * Chaining is supported in custom builds as long as the `_#value` method is
      * directly or indirectly included in the build.
      *
      * In addition to lodash methods, wrappers have `Array` and `String` methods.
      *
      * The wrapper `Array` methods are:
      * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`
      *
      * The wrapper `String` methods are:
      * `replace` and `split`
      *
      * The wrapper methods that support shortcut fusion are:
      * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,
      * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,
      * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`
      *
      * The chainable wrapper methods are:
      * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,
      * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,
      * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,
      * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,
      * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,
      * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,
      * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,
      * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,
      * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,
      * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,
      * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,
      * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,
      * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,
      * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,
      * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,
      * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,
      * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,
      * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,
      * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,
      * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,
      * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,
      * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,
      * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,
      * `zipObject`, `zipObjectDeep`, and `zipWith`
      *
      * The wrapper methods that are **not** chainable by default are:
      * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,
      * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,
      * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,
      * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,
      * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,
      * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,
      * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,
      * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,
      * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,
      * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,
      * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,
      * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,
      * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,
      * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,
      * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,
      * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,
      * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,
      * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,
      * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,
      * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,
      * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,
      * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,
      * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,
      * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,
      * `upperFirst`, `value`, and `words`
      *
      * @name _
      * @constructor
      * @category Seq
      * @param {*} value The value to wrap in a `lodash` instance.
      * @returns {Object} Returns the new `lodash` wrapper instance.
      * @example
      *
      * function square(n) {
      *   return n * n;
      * }
      *
      * var wrapped = _([1, 2, 3]);
      *
      * // Returns an unwrapped value.
      * wrapped.reduce(_.add);
      * // => 6
      *
      * // Returns a wrapped value.
      * var squares = wrapped.map(square);
      *
      * _.isArray(squares);
      * // => false
      *
      * _.isArray(squares.value());
      * // => true
      */
     function lodash(value) {
       if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {
         if (value instanceof LodashWrapper) {
           return value;
         }
         if (hasOwnProperty.call(value, '__wrapped__')) {
           return wrapperClone(value);
         }
       }
       return new LodashWrapper(value);
     }
 
     /**
      * The base implementation of `_.create` without support for assigning
      * properties to the created object.
      *
      * @private
      * @param {Object} proto The object to inherit from.
      * @returns {Object} Returns the new object.
      */
     var baseCreate = (function() {
       function object() {}
       return function(proto) {
         if (!isObject(proto)) {
           return {};
         }
         if (objectCreate) {
           return objectCreate(proto);
         }
         object.prototype = proto;
         var result = new object;
         object.prototype = undefined;
         return result;
       };
     }());
 
     /**
      * The function whose prototype chain sequence wrappers inherit from.
      *
      * @private
      */
     function baseLodash() {
       // No operation performed.
     }
 
     /**
      * The base constructor for creating `lodash` wrapper objects.
      *
      * @private
      * @param {*} value The value to wrap.
      * @param {boolean} [chainAll] Enable explicit method chain sequences.
      */
     function LodashWrapper(value, chainAll) {
       this.__wrapped__ = value;
       this.__actions__ = [];
       this.__chain__ = !!chainAll;
       this.__index__ = 0;
       this.__values__ = undefined;
     }
 
     /**
      * By default, the template delimiters used by lodash are like those in
      * embedded Ruby (ERB) as well as ES2015 template strings. Change the
      * following template settings to use alternative delimiters.
      *
      * @static
      * @memberOf _
      * @type {Object}
      */
     lodash.templateSettings = {
 
       /**
        * Used to detect `data` property values to be HTML-escaped.
        *
        * @memberOf _.templateSettings
        * @type {RegExp}
        */
       'escape': reEscape,
 
       /**
        * Used to detect code to be evaluated.
        *
        * @memberOf _.templateSettings
        * @type {RegExp}
        */
       'evaluate': reEvaluate,
 
       /**
        * Used to detect `data` property values to inject.
        *
        * @memberOf _.templateSettings
        * @type {RegExp}
        */
       'interpolate': reInterpolate,
 
       /**
        * Used to reference the data object in the template text.
        *
        * @memberOf _.templateSettings
        * @type {string}
        */
       'variable': '',
 
       /**
        * Used to import variables into the compiled template.
        *
        * @memberOf _.templateSettings
        * @type {Object}
        */
       'imports': {
 
         /**
          * A reference to the `lodash` function.
          *
          * @memberOf _.templateSettings.imports
          * @type {Function}
          */
         '_': lodash
       }
     };
 
     // Ensure wrappers are instances of `baseLodash`.
     lodash.prototype = baseLodash.prototype;
     lodash.prototype.constructor = lodash;
 
     LodashWrapper.prototype = baseCreate(baseLodash.prototype);
     LodashWrapper.prototype.constructor = LodashWrapper;
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.
      *
      * @private
      * @constructor
      * @param {*} value The value to wrap.
      */
     function LazyWrapper(value) {
       this.__wrapped__ = value;
       this.__actions__ = [];
       this.__dir__ = 1;
       this.__filtered__ = false;
       this.__iteratees__ = [];
       this.__takeCount__ = MAX_ARRAY_LENGTH;
       this.__views__ = [];
     }
 
     /**
      * Creates a clone of the lazy wrapper object.
      *
      * @private
      * @name clone
      * @memberOf LazyWrapper
      * @returns {Object} Returns the cloned `LazyWrapper` object.
      */
     function lazyClone() {
       var result = new LazyWrapper(this.__wrapped__);
       result.__actions__ = copyArray(this.__actions__);
       result.__dir__ = this.__dir__;
       result.__filtered__ = this.__filtered__;
       result.__iteratees__ = copyArray(this.__iteratees__);
       result.__takeCount__ = this.__takeCount__;
       result.__views__ = copyArray(this.__views__);
       return result;
     }
 
     /**
      * Reverses the direction of lazy iteration.
      *
      * @private
      * @name reverse
      * @memberOf LazyWrapper
      * @returns {Object} Returns the new reversed `LazyWrapper` object.
      */
     function lazyReverse() {
       if (this.__filtered__) {
         var result = new LazyWrapper(this);
         result.__dir__ = -1;
         result.__filtered__ = true;
       } else {
         result = this.clone();
         result.__dir__ *= -1;
       }
       return result;
     }
 
     /**
      * Extracts the unwrapped value from its lazy wrapper.
      *
      * @private
      * @name value
      * @memberOf LazyWrapper
      * @returns {*} Returns the unwrapped value.
      */
     function lazyValue() {
       var array = this.__wrapped__.value(),
           dir = this.__dir__,
           isArr = isArray(array),
           isRight = dir < 0,
           arrLength = isArr ? array.length : 0,
           view = getView(0, arrLength, this.__views__),
           start = view.start,
           end = view.end,
           length = end - start,
           index = isRight ? end : (start - 1),
           iteratees = this.__iteratees__,
           iterLength = iteratees.length,
           resIndex = 0,
           takeCount = nativeMin(length, this.__takeCount__);
 
       if (!isArr || (!isRight && arrLength == length && takeCount == length)) {
         return baseWrapperValue(array, this.__actions__);
       }
       var result = [];
 
       outer:
       while (length-- && resIndex < takeCount) {
         index += dir;
 
         var iterIndex = -1,
             value = array[index];
 
         while (++iterIndex < iterLength) {
           var data = iteratees[iterIndex],
               iteratee = data.iteratee,
               type = data.type,
               computed = iteratee(value);
 
           if (type == LAZY_MAP_FLAG) {
             value = computed;
           } else if (!computed) {
             if (type == LAZY_FILTER_FLAG) {
               continue outer;
             } else {
               break outer;
             }
           }
         }
         result[resIndex++] = value;
       }
       return result;
     }
 
     // Ensure `LazyWrapper` is an instance of `baseLodash`.
     LazyWrapper.prototype = baseCreate(baseLodash.prototype);
     LazyWrapper.prototype.constructor = LazyWrapper;
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Creates a hash object.
      *
      * @private
      * @constructor
      * @param {Array} [entries] The key-value pairs to cache.
      */
     function Hash(entries) {
       var index = -1,
           length = entries == null ? 0 : entries.length;
 
       this.clear();
       while (++index < length) {
         var entry = entries[index];
         this.set(entry[0], entry[1]);
       }
     }
 
     /**
      * Removes all key-value entries from the hash.
      *
      * @private
      * @name clear
      * @memberOf Hash
      */
     function hashClear() {
       this.__data__ = nativeCreate ? nativeCreate(null) : {};
       this.size = 0;
     }
 
     /**
      * Removes `key` and its value from the hash.
      *
      * @private
      * @name delete
      * @memberOf Hash
      * @param {Object} hash The hash to modify.
      * @param {string} key The key of the value to remove.
      * @returns {boolean} Returns `true` if the entry was removed, else `false`.
      */
     function hashDelete(key) {
       var result = this.has(key) && delete this.__data__[key];
       this.size -= result ? 1 : 0;
       return result;
     }
 
     /**
      * Gets the hash value for `key`.
      *
      * @private
      * @name get
      * @memberOf Hash
      * @param {string} key The key of the value to get.
      * @returns {*} Returns the entry value.
      */
     function hashGet(key) {
       var data = this.__data__;
       if (nativeCreate) {
         var result = data[key];
         return result === HASH_UNDEFINED ? undefined : result;
       }
       return hasOwnProperty.call(data, key) ? data[key] : undefined;
     }
 
     /**
      * Checks if a hash value for `key` exists.
      *
      * @private
      * @name has
      * @memberOf Hash
      * @param {string} key The key of the entry to check.
      * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
      */
     function hashHas(key) {
       var data = this.__data__;
       return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);
     }
 
     /**
      * Sets the hash `key` to `value`.
      *
      * @private
      * @name set
      * @memberOf Hash
      * @param {string} key The key of the value to set.
      * @param {*} value The value to set.
      * @returns {Object} Returns the hash instance.
      */
     function hashSet(key, value) {
       var data = this.__data__;
       this.size += this.has(key) ? 0 : 1;
       data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
       return this;
     }
 
     // Add methods to `Hash`.
     Hash.prototype.clear = hashClear;
     Hash.prototype['delete'] = hashDelete;
     Hash.prototype.get = hashGet;
     Hash.prototype.has = hashHas;
     Hash.prototype.set = hashSet;
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Creates an list cache object.
      *
      * @private
      * @constructor
      * @param {Array} [entries] The key-value pairs to cache.
      */
     function ListCache(entries) {
       var index = -1,
           length = entries == null ? 0 : entries.length;
 
       this.clear();
       while (++index < length) {
         var entry = entries[index];
         this.set(entry[0], entry[1]);
       }
     }
 
     /**
      * Removes all key-value entries from the list cache.
      *
      * @private
      * @name clear
      * @memberOf ListCache
      */
     function listCacheClear() {
       this.__data__ = [];
       this.size = 0;
     }
 
     /**
      * Removes `key` and its value from the list cache.
      *
      * @private
      * @name delete
      * @memberOf ListCache
      * @param {string} key The key of the value to remove.
      * @returns {boolean} Returns `true` if the entry was removed, else `false`.
      */
     function listCacheDelete(key) {
       var data = this.__data__,
           index = assocIndexOf(data, key);
 
       if (index < 0) {
         return false;
       }
       var lastIndex = data.length - 1;
       if (index == lastIndex) {
         data.pop();
       } else {
         splice.call(data, index, 1);
       }
       --this.size;
       return true;
     }
 
     /**
      * Gets the list cache value for `key`.
      *
      * @private
      * @name get
      * @memberOf ListCache
      * @param {string} key The key of the value to get.
      * @returns {*} Returns the entry value.
      */
     function listCacheGet(key) {
       var data = this.__data__,
           index = assocIndexOf(data, key);
 
       return index < 0 ? undefined : data[index][1];
     }
 
     /**
      * Checks if a list cache value for `key` exists.
      *
      * @private
      * @name has
      * @memberOf ListCache
      * @param {string} key The key of the entry to check.
      * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
      */
     function listCacheHas(key) {
       return assocIndexOf(this.__data__, key) > -1;
     }
 
     /**
      * Sets the list cache `key` to `value`.
      *
      * @private
      * @name set
      * @memberOf ListCache
      * @param {string} key The key of the value to set.
      * @param {*} value The value to set.
      * @returns {Object} Returns the list cache instance.
      */
     function listCacheSet(key, value) {
       var data = this.__data__,
           index = assocIndexOf(data, key);
 
       if (index < 0) {
         ++this.size;
         data.push([key, value]);
       } else {
         data[index][1] = value;
       }
       return this;
     }
 
     // Add methods to `ListCache`.
     ListCache.prototype.clear = listCacheClear;
     ListCache.prototype['delete'] = listCacheDelete;
     ListCache.prototype.get = listCacheGet;
     ListCache.prototype.has = listCacheHas;
     ListCache.prototype.set = listCacheSet;
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Creates a map cache object to store key-value pairs.
      *
      * @private
      * @constructor
      * @param {Array} [entries] The key-value pairs to cache.
      */
     function MapCache(entries) {
       var index = -1,
           length = entries == null ? 0 : entries.length;
 
       this.clear();
       while (++index < length) {
         var entry = entries[index];
         this.set(entry[0], entry[1]);
       }
     }
 
     /**
      * Removes all key-value entries from the map.
      *
      * @private
      * @name clear
      * @memberOf MapCache
      */
     function mapCacheClear() {
       this.size = 0;
       this.__data__ = {
         'hash': new Hash,
         'map': new (Map || ListCache),
         'string': new Hash
       };
     }
 
     /**
      * Removes `key` and its value from the map.
      *
      * @private
      * @name delete
      * @memberOf MapCache
      * @param {string} key The key of the value to remove.
      * @returns {boolean} Returns `true` if the entry was removed, else `false`.
      */
     function mapCacheDelete(key) {
       var result = getMapData(this, key)['delete'](key);
       this.size -= result ? 1 : 0;
       return result;
     }
 
     /**
      * Gets the map value for `key`.
      *
      * @private
      * @name get
      * @memberOf MapCache
      * @param {string} key The key of the value to get.
      * @returns {*} Returns the entry value.
      */
     function mapCacheGet(key) {
       return getMapData(this, key).get(key);
     }
 
     /**
      * Checks if a map value for `key` exists.
      *
      * @private
      * @name has
      * @memberOf MapCache
      * @param {string} key The key of the entry to check.
      * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
      */
     function mapCacheHas(key) {
       return getMapData(this, key).has(key);
     }
 
     /**
      * Sets the map `key` to `value`.
      *
      * @private
      * @name set
      * @memberOf MapCache
      * @param {string} key The key of the value to set.
      * @param {*} value The value to set.
      * @returns {Object} Returns the map cache instance.
      */
     function mapCacheSet(key, value) {
       var data = getMapData(this, key),
           size = data.size;
 
       data.set(key, value);
       this.size += data.size == size ? 0 : 1;
       return this;
     }
 
     // Add methods to `MapCache`.
     MapCache.prototype.clear = mapCacheClear;
     MapCache.prototype['delete'] = mapCacheDelete;
     MapCache.prototype.get = mapCacheGet;
     MapCache.prototype.has = mapCacheHas;
     MapCache.prototype.set = mapCacheSet;
 
     /*------------------------------------------------------------------------*/
 
     /**
      *
      * Creates an array cache object to store unique values.
      *
      * @private
      * @constructor
      * @param {Array} [values] The values to cache.
      */
     function SetCache(values) {
       var index = -1,
           length = values == null ? 0 : values.length;
 
       this.__data__ = new MapCache;
       while (++index < length) {
         this.add(values[index]);
       }
     }
 
     /**
      * Adds `value` to the array cache.
      *
      * @private
      * @name add
      * @memberOf SetCache
      * @alias push
      * @param {*} value The value to cache.
      * @returns {Object} Returns the cache instance.
      */
     function setCacheAdd(value) {
       this.__data__.set(value, HASH_UNDEFINED);
       return this;
     }
 
     /**
      * Checks if `value` is in the array cache.
      *
      * @private
      * @name has
      * @memberOf SetCache
      * @param {*} value The value to search for.
      * @returns {number} Returns `true` if `value` is found, else `false`.
      */
     function setCacheHas(value) {
       return this.__data__.has(value);
     }
 
     // Add methods to `SetCache`.
     SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
     SetCache.prototype.has = setCacheHas;
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Creates a stack cache object to store key-value pairs.
      *
      * @private
      * @constructor
      * @param {Array} [entries] The key-value pairs to cache.
      */
     function Stack(entries) {
       var data = this.__data__ = new ListCache(entries);
       this.size = data.size;
     }
 
     /**
      * Removes all key-value entries from the stack.
      *
      * @private
      * @name clear
      * @memberOf Stack
      */
     function stackClear() {
       this.__data__ = new ListCache;
       this.size = 0;
     }
 
     /**
      * Removes `key` and its value from the stack.
      *
      * @private
      * @name delete
      * @memberOf Stack
      * @param {string} key The key of the value to remove.
      * @returns {boolean} Returns `true` if the entry was removed, else `false`.
      */
     function stackDelete(key) {
       var data = this.__data__,
           result = data['delete'](key);
 
       this.size = data.size;
       return result;
     }
 
     /**
      * Gets the stack value for `key`.
      *
      * @private
      * @name get
      * @memberOf Stack
      * @param {string} key The key of the value to get.
      * @returns {*} Returns the entry value.
      */
     function stackGet(key) {
       return this.__data__.get(key);
     }
 
     /**
      * Checks if a stack value for `key` exists.
      *
      * @private
      * @name has
      * @memberOf Stack
      * @param {string} key The key of the entry to check.
      * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
      */
     function stackHas(key) {
       return this.__data__.has(key);
     }
 
     /**
      * Sets the stack `key` to `value`.
      *
      * @private
      * @name set
      * @memberOf Stack
      * @param {string} key The key of the value to set.
      * @param {*} value The value to set.
      * @returns {Object} Returns the stack cache instance.
      */
     function stackSet(key, value) {
       var data = this.__data__;
       if (data instanceof ListCache) {
         var pairs = data.__data__;
         if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
           pairs.push([key, value]);
           this.size = ++data.size;
           return this;
         }
         data = this.__data__ = new MapCache(pairs);
       }
       data.set(key, value);
       this.size = data.size;
       return this;
     }
 
     // Add methods to `Stack`.
     Stack.prototype.clear = stackClear;
     Stack.prototype['delete'] = stackDelete;
     Stack.prototype.get = stackGet;
     Stack.prototype.has = stackHas;
     Stack.prototype.set = stackSet;
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Creates an array of the enumerable property names of the array-like `value`.
      *
      * @private
      * @param {*} value The value to query.
      * @param {boolean} inherited Specify returning inherited property names.
      * @returns {Array} Returns the array of property names.
      */
     function arrayLikeKeys(value, inherited) {
       var isArr = isArray(value),
           isArg = !isArr && isArguments(value),
           isBuff = !isArr && !isArg && isBuffer(value),
           isType = !isArr && !isArg && !isBuff && isTypedArray(value),
           skipIndexes = isArr || isArg || isBuff || isType,
           result = skipIndexes ? baseTimes(value.length, String) : [],
           length = result.length;
 
       for (var key in value) {
         if ((inherited || hasOwnProperty.call(value, key)) &&
             !(skipIndexes && (
                // Safari 9 has enumerable `arguments.length` in strict mode.
                key == 'length' ||
                // Node.js 0.10 has enumerable non-index properties on buffers.
                (isBuff && (key == 'offset' || key == 'parent')) ||
                // PhantomJS 2 has enumerable non-index properties on typed arrays.
                (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||
                // Skip index properties.
                isIndex(key, length)
             ))) {
           result.push(key);
         }
       }
       return result;
     }
 
     /**
      * A specialized version of `_.sample` for arrays.
      *
      * @private
      * @param {Array} array The array to sample.
      * @returns {*} Returns the random element.
      */
     function arraySample(array) {
       var length = array.length;
       return length ? array[baseRandom(0, length - 1)] : undefined;
     }
 
     /**
      * A specialized version of `_.sampleSize` for arrays.
      *
      * @private
      * @param {Array} array The array to sample.
      * @param {number} n The number of elements to sample.
      * @returns {Array} Returns the random elements.
      */
     function arraySampleSize(array, n) {
       return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));
     }
 
     /**
      * A specialized version of `_.shuffle` for arrays.
      *
      * @private
      * @param {Array} array The array to shuffle.
      * @returns {Array} Returns the new shuffled array.
      */
     function arrayShuffle(array) {
       return shuffleSelf(copyArray(array));
     }
 
     /**
      * This function is like `assignValue` except that it doesn't assign
      * `undefined` values.
      *
      * @private
      * @param {Object} object The object to modify.
      * @param {string} key The key of the property to assign.
      * @param {*} value The value to assign.
      */
     function assignMergeValue(object, key, value) {
       if ((value !== undefined && !eq(object[key], value)) ||
           (value === undefined && !(key in object))) {
         baseAssignValue(object, key, value);
       }
     }
 
     /**
      * Assigns `value` to `key` of `object` if the existing value is not equivalent
      * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
      * for equality comparisons.
      *
      * @private
      * @param {Object} object The object to modify.
      * @param {string} key The key of the property to assign.
      * @param {*} value The value to assign.
      */
     function assignValue(object, key, value) {
       var objValue = object[key];
       if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
           (value === undefined && !(key in object))) {
         baseAssignValue(object, key, value);
       }
     }
 
     /**
      * Gets the index at which the `key` is found in `array` of key-value pairs.
      *
      * @private
      * @param {Array} array The array to inspect.
      * @param {*} key The key to search for.
      * @returns {number} Returns the index of the matched value, else `-1`.
      */
     function assocIndexOf(array, key) {
       var length = array.length;
       while (length--) {
         if (eq(array[length][0], key)) {
           return length;
         }
       }
       return -1;
     }
 
     /**
      * Aggregates elements of `collection` on `accumulator` with keys transformed
      * by `iteratee` and values set by `setter`.
      *
      * @private
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} setter The function to set `accumulator` values.
      * @param {Function} iteratee The iteratee to transform keys.
      * @param {Object} accumulator The initial aggregated object.
      * @returns {Function} Returns `accumulator`.
      */
     function baseAggregator(collection, setter, iteratee, accumulator) {
       baseEach(collection, function(value, key, collection) {
         setter(accumulator, value, iteratee(value), collection);
       });
       return accumulator;
     }
 
     /**
      * The base implementation of `_.assign` without support for multiple sources
      * or `customizer` functions.
      *
      * @private
      * @param {Object} object The destination object.
      * @param {Object} source The source object.
      * @returns {Object} Returns `object`.
      */
     function baseAssign(object, source) {
       return object && copyObject(source, keys(source), object);
     }
 
     /**
      * The base implementation of `_.assignIn` without support for multiple sources
      * or `customizer` functions.
      *
      * @private
      * @param {Object} object The destination object.
      * @param {Object} source The source object.
      * @returns {Object} Returns `object`.
      */
     function baseAssignIn(object, source) {
       return object && copyObject(source, keysIn(source), object);
     }
 
     /**
      * The base implementation of `assignValue` and `assignMergeValue` without
      * value checks.
      *
      * @private
      * @param {Object} object The object to modify.
      * @param {string} key The key of the property to assign.
      * @param {*} value The value to assign.
      */
     function baseAssignValue(object, key, value) {
       if (key == '__proto__' && defineProperty) {
         defineProperty(object, key, {
           'configurable': true,
           'enumerable': true,
           'value': value,
           'writable': true
         });
       } else {
         object[key] = value;
       }
     }
 
     /**
      * The base implementation of `_.at` without support for individual paths.
      *
      * @private
      * @param {Object} object The object to iterate over.
      * @param {string[]} paths The property paths to pick.
      * @returns {Array} Returns the picked elements.
      */
     function baseAt(object, paths) {
       var index = -1,
           length = paths.length,
           result = Array(length),
           skip = object == null;
 
       while (++index < length) {
         result[index] = skip ? undefined : get(object, paths[index]);
       }
       return result;
     }
 
     /**
      * The base implementation of `_.clamp` which doesn't coerce arguments.
      *
      * @private
      * @param {number} number The number to clamp.
      * @param {number} [lower] The lower bound.
      * @param {number} upper The upper bound.
      * @returns {number} Returns the clamped number.
      */
     function baseClamp(number, lower, upper) {
       if (number === number) {
         if (upper !== undefined) {
           number = number <= upper ? number : upper;
         }
         if (lower !== undefined) {
           number = number >= lower ? number : lower;
         }
       }
       return number;
     }
 
     /**
      * The base implementation of `_.clone` and `_.cloneDeep` which tracks
      * traversed objects.
      *
      * @private
      * @param {*} value The value to clone.
      * @param {boolean} bitmask The bitmask flags.
      *  1 - Deep clone
      *  2 - Flatten inherited properties
      *  4 - Clone symbols
      * @param {Function} [customizer] The function to customize cloning.
      * @param {string} [key] The key of `value`.
      * @param {Object} [object] The parent object of `value`.
      * @param {Object} [stack] Tracks traversed objects and their clone counterparts.
      * @returns {*} Returns the cloned value.
      */
     function baseClone(value, bitmask, customizer, key, object, stack) {
       var result,
           isDeep = bitmask & CLONE_DEEP_FLAG,
           isFlat = bitmask & CLONE_FLAT_FLAG,
           isFull = bitmask & CLONE_SYMBOLS_FLAG;
 
       if (customizer) {
         result = object ? customizer(value, key, object, stack) : customizer(value);
       }
       if (result !== undefined) {
         return result;
       }
       if (!isObject(value)) {
         return value;
       }
       var isArr = isArray(value);
       if (isArr) {
         result = initCloneArray(value);
         if (!isDeep) {
           return copyArray(value, result);
         }
       } else {
         var tag = getTag(value),
             isFunc = tag == funcTag || tag == genTag;
 
         if (isBuffer(value)) {
           return cloneBuffer(value, isDeep);
         }
         if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
           result = (isFlat || isFunc) ? {} : initCloneObject(value);
           if (!isDeep) {
             return isFlat
               ? copySymbolsIn(value, baseAssignIn(result, value))
               : copySymbols(value, baseAssign(result, value));
           }
         } else {
           if (!cloneableTags[tag]) {
             return object ? value : {};
           }
           result = initCloneByTag(value, tag, isDeep);
         }
       }
       // Check for circular references and return its corresponding clone.
       stack || (stack = new Stack);
       var stacked = stack.get(value);
       if (stacked) {
         return stacked;
       }
       stack.set(value, result);
 
       if (isSet(value)) {
         value.forEach(function(subValue) {
           result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));
         });
       } else if (isMap(value)) {
         value.forEach(function(subValue, key) {
           result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));
         });
       }
 
       var keysFunc = isFull
         ? (isFlat ? getAllKeysIn : getAllKeys)
         : (isFlat ? keysIn : keys);
 
       var props = isArr ? undefined : keysFunc(value);
       arrayEach(props || value, function(subValue, key) {
         if (props) {
           key = subValue;
           subValue = value[key];
         }
         // Recursively populate clone (susceptible to call stack limits).
         assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));
       });
       return result;
     }
 
     /**
      * The base implementation of `_.conforms` which doesn't clone `source`.
      *
      * @private
      * @param {Object} source The object of property predicates to conform to.
      * @returns {Function} Returns the new spec function.
      */
     function baseConforms(source) {
       var props = keys(source);
       return function(object) {
         return baseConformsTo(object, source, props);
       };
     }
 
     /**
      * The base implementation of `_.conformsTo` which accepts `props` to check.
      *
      * @private
      * @param {Object} object The object to inspect.
      * @param {Object} source The object of property predicates to conform to.
      * @returns {boolean} Returns `true` if `object` conforms, else `false`.
      */
     function baseConformsTo(object, source, props) {
       var length = props.length;
       if (object == null) {
         return !length;
       }
       object = Object(object);
       while (length--) {
         var key = props[length],
             predicate = source[key],
             value = object[key];
 
         if ((value === undefined && !(key in object)) || !predicate(value)) {
           return false;
         }
       }
       return true;
     }
 
     /**
      * The base implementation of `_.delay` and `_.defer` which accepts `args`
      * to provide to `func`.
      *
      * @private
      * @param {Function} func The function to delay.
      * @param {number} wait The number of milliseconds to delay invocation.
      * @param {Array} args The arguments to provide to `func`.
      * @returns {number|Object} Returns the timer id or timeout object.
      */
     function baseDelay(func, wait, args) {
       if (typeof func != 'function') {
         throw new TypeError(FUNC_ERROR_TEXT);
       }
       return setTimeout(function() { func.apply(undefined, args); }, wait);
     }
 
     /**
      * The base implementation of methods like `_.difference` without support
      * for excluding multiple arrays or iteratee shorthands.
      *
      * @private
      * @param {Array} array The array to inspect.
      * @param {Array} values The values to exclude.
      * @param {Function} [iteratee] The iteratee invoked per element.
      * @param {Function} [comparator] The comparator invoked per element.
      * @returns {Array} Returns the new array of filtered values.
      */
     function baseDifference(array, values, iteratee, comparator) {
       var index = -1,
           includes = arrayIncludes,
           isCommon = true,
           length = array.length,
           result = [],
           valuesLength = values.length;
 
       if (!length) {
         return result;
       }
       if (iteratee) {
         values = arrayMap(values, baseUnary(iteratee));
       }
       if (comparator) {
         includes = arrayIncludesWith;
         isCommon = false;
       }
       else if (values.length >= LARGE_ARRAY_SIZE) {
         includes = cacheHas;
         isCommon = false;
         values = new SetCache(values);
       }
       outer:
       while (++index < length) {
         var value = array[index],
             computed = iteratee == null ? value : iteratee(value);
 
         value = (comparator || value !== 0) ? value : 0;
         if (isCommon && computed === computed) {
           var valuesIndex = valuesLength;
           while (valuesIndex--) {
             if (values[valuesIndex] === computed) {
               continue outer;
             }
           }
           result.push(value);
         }
         else if (!includes(values, computed, comparator)) {
           result.push(value);
         }
       }
       return result;
     }
 
     /**
      * The base implementation of `_.forEach` without support for iteratee shorthands.
      *
      * @private
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} iteratee The function invoked per iteration.
      * @returns {Array|Object} Returns `collection`.
      */
     var baseEach = createBaseEach(baseForOwn);
 
     /**
      * The base implementation of `_.forEachRight` without support for iteratee shorthands.
      *
      * @private
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} iteratee The function invoked per iteration.
      * @returns {Array|Object} Returns `collection`.
      */
     var baseEachRight = createBaseEach(baseForOwnRight, true);
 
     /**
      * The base implementation of `_.every` without support for iteratee shorthands.
      *
      * @private
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} predicate The function invoked per iteration.
      * @returns {boolean} Returns `true` if all elements pass the predicate check,
      *  else `false`
      */
     function baseEvery(collection, predicate) {
       var result = true;
       baseEach(collection, function(value, index, collection) {
         result = !!predicate(value, index, collection);
         return result;
       });
       return result;
     }
 
     /**
      * The base implementation of methods like `_.max` and `_.min` which accepts a
      * `comparator` to determine the extremum value.
      *
      * @private
      * @param {Array} array The array to iterate over.
      * @param {Function} iteratee The iteratee invoked per iteration.
      * @param {Function} comparator The comparator used to compare values.
      * @returns {*} Returns the extremum value.
      */
     function baseExtremum(array, iteratee, comparator) {
       var index = -1,
           length = array.length;
 
       while (++index < length) {
         var value = array[index],
             current = iteratee(value);
 
         if (current != null && (computed === undefined
               ? (current === current && !isSymbol(current))
               : comparator(current, computed)
             )) {
           var computed = current,
               result = value;
         }
       }
       return result;
     }
 
     /**
      * The base implementation of `_.fill` without an iteratee call guard.
      *
      * @private
      * @param {Array} array The array to fill.
      * @param {*} value The value to fill `array` with.
      * @param {number} [start=0] The start position.
      * @param {number} [end=array.length] The end position.
      * @returns {Array} Returns `array`.
      */
     function baseFill(array, value, start, end) {
       var length = array.length;
 
       start = toInteger(start);
       if (start < 0) {
         start = -start > length ? 0 : (length + start);
       }
       end = (end === undefined || end > length) ? length : toInteger(end);
       if (end < 0) {
         end += length;
       }
       end = start > end ? 0 : toLength(end);
       while (start < end) {
         array[start++] = value;
       }
       return array;
     }
 
     /**
      * The base implementation of `_.filter` without support for iteratee shorthands.
      *
      * @private
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} predicate The function invoked per iteration.
      * @returns {Array} Returns the new filtered array.
      */
     function baseFilter(collection, predicate) {
       var result = [];
       baseEach(collection, function(value, index, collection) {
         if (predicate(value, index, collection)) {
           result.push(value);
         }
       });
       return result;
     }
 
     /**
      * The base implementation of `_.flatten` with support for restricting flattening.
      *
      * @private
      * @param {Array} array The array to flatten.
      * @param {number} depth The maximum recursion depth.
      * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.
      * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.
      * @param {Array} [result=[]] The initial result value.
      * @returns {Array} Returns the new flattened array.
      */
     function baseFlatten(array, depth, predicate, isStrict, result) {
       var index = -1,
           length = array.length;
 
       predicate || (predicate = isFlattenable);
       result || (result = []);
 
       while (++index < length) {
         var value = array[index];
         if (depth > 0 && predicate(value)) {
           if (depth > 1) {
             // Recursively flatten arrays (susceptible to call stack limits).
             baseFlatten(value, depth - 1, predicate, isStrict, result);
           } else {
             arrayPush(result, value);
           }
         } else if (!isStrict) {
           result[result.length] = value;
         }
       }
       return result;
     }
 
     /**
      * The base implementation of `baseForOwn` which iterates over `object`
      * properties returned by `keysFunc` and invokes `iteratee` for each property.
      * Iteratee functions may exit iteration early by explicitly returning `false`.
      *
      * @private
      * @param {Object} object The object to iterate over.
      * @param {Function} iteratee The function invoked per iteration.
      * @param {Function} keysFunc The function to get the keys of `object`.
      * @returns {Object} Returns `object`.
      */
     var baseFor = createBaseFor();
 
     /**
      * This function is like `baseFor` except that it iterates over properties
      * in the opposite order.
      *
      * @private
      * @param {Object} object The object to iterate over.
      * @param {Function} iteratee The function invoked per iteration.
      * @param {Function} keysFunc The function to get the keys of `object`.
      * @returns {Object} Returns `object`.
      */
     var baseForRight = createBaseFor(true);
 
     /**
      * The base implementation of `_.forOwn` without support for iteratee shorthands.
      *
      * @private
      * @param {Object} object The object to iterate over.
      * @param {Function} iteratee The function invoked per iteration.
      * @returns {Object} Returns `object`.
      */
     function baseForOwn(object, iteratee) {
       return object && baseFor(object, iteratee, keys);
     }
 
     /**
      * The base implementation of `_.forOwnRight` without support for iteratee shorthands.
      *
      * @private
      * @param {Object} object The object to iterate over.
      * @param {Function} iteratee The function invoked per iteration.
      * @returns {Object} Returns `object`.
      */
     function baseForOwnRight(object, iteratee) {
       return object && baseForRight(object, iteratee, keys);
     }
 
     /**
      * The base implementation of `_.functions` which creates an array of
      * `object` function property names filtered from `props`.
      *
      * @private
      * @param {Object} object The object to inspect.
      * @param {Array} props The property names to filter.
      * @returns {Array} Returns the function names.
      */
     function baseFunctions(object, props) {
       return arrayFilter(props, function(key) {
         return isFunction(object[key]);
       });
     }
 
     /**
      * The base implementation of `_.get` without support for default values.
      *
      * @private
      * @param {Object} object The object to query.
      * @param {Array|string} path The path of the property to get.
      * @returns {*} Returns the resolved value.
      */
     function baseGet(object, path) {
       path = castPath(path, object);
 
       var index = 0,
           length = path.length;
 
       while (object != null && index < length) {
         object = object[toKey(path[index++])];
       }
       return (index && index == length) ? object : undefined;
     }
 
     /**
      * The base implementation of `getAllKeys` and `getAllKeysIn` which uses
      * `keysFunc` and `symbolsFunc` to get the enumerable property names and
      * symbols of `object`.
      *
      * @private
      * @param {Object} object The object to query.
      * @param {Function} keysFunc The function to get the keys of `object`.
      * @param {Function} symbolsFunc The function to get the symbols of `object`.
      * @returns {Array} Returns the array of property names and symbols.
      */
     function baseGetAllKeys(object, keysFunc, symbolsFunc) {
       var result = keysFunc(object);
       return isArray(object) ? result : arrayPush(result, symbolsFunc(object));
     }
 
     /**
      * The base implementation of `getTag` without fallbacks for buggy environments.
      *
      * @private
      * @param {*} value The value to query.
      * @returns {string} Returns the `toStringTag`.
      */
     function baseGetTag(value) {
       if (value == null) {
         return value === undefined ? undefinedTag : nullTag;
       }
       return (symToStringTag && symToStringTag in Object(value))
         ? getRawTag(value)
         : objectToString(value);
     }
 
     /**
      * The base implementation of `_.gt` which doesn't coerce arguments.
      *
      * @private
      * @param {*} value The value to compare.
      * @param {*} other The other value to compare.
      * @returns {boolean} Returns `true` if `value` is greater than `other`,
      *  else `false`.
      */
     function baseGt(value, other) {
       return value > other;
     }
 
     /**
      * The base implementation of `_.has` without support for deep paths.
      *
      * @private
      * @param {Object} [object] The object to query.
      * @param {Array|string} key The key to check.
      * @returns {boolean} Returns `true` if `key` exists, else `false`.
      */
     function baseHas(object, key) {
       return object != null && hasOwnProperty.call(object, key);
     }
 
     /**
      * The base implementation of `_.hasIn` without support for deep paths.
      *
      * @private
      * @param {Object} [object] The object to query.
      * @param {Array|string} key The key to check.
      * @returns {boolean} Returns `true` if `key` exists, else `false`.
      */
     function baseHasIn(object, key) {
       return object != null && key in Object(object);
     }
 
     /**
      * The base implementation of `_.inRange` which doesn't coerce arguments.
      *
      * @private
      * @param {number} number The number to check.
      * @param {number} start The start of the range.
      * @param {number} end The end of the range.
      * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
      */
     function baseInRange(number, start, end) {
       return number >= nativeMin(start, end) && number < nativeMax(start, end);
     }
 
     /**
      * The base implementation of methods like `_.intersection`, without support
      * for iteratee shorthands, that accepts an array of arrays to inspect.
      *
      * @private
      * @param {Array} arrays The arrays to inspect.
      * @param {Function} [iteratee] The iteratee invoked per element.
      * @param {Function} [comparator] The comparator invoked per element.
      * @returns {Array} Returns the new array of shared values.
      */
     function baseIntersection(arrays, iteratee, comparator) {
       var includes = comparator ? arrayIncludesWith : arrayIncludes,
           length = arrays[0].length,
           othLength = arrays.length,
           othIndex = othLength,
           caches = Array(othLength),
           maxLength = Infinity,
           result = [];
 
       while (othIndex--) {
         var array = arrays[othIndex];
         if (othIndex && iteratee) {
           array = arrayMap(array, baseUnary(iteratee));
         }
         maxLength = nativeMin(array.length, maxLength);
         caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))
           ? new SetCache(othIndex && array)
           : undefined;
       }
       array = arrays[0];
 
       var index = -1,
           seen = caches[0];
 
       outer:
       while (++index < length && result.length < maxLength) {
         var value = array[index],
             computed = iteratee ? iteratee(value) : value;
 
         value = (comparator || value !== 0) ? value : 0;
         if (!(seen
               ? cacheHas(seen, computed)
               : includes(result, computed, comparator)
             )) {
           othIndex = othLength;
           while (--othIndex) {
             var cache = caches[othIndex];
             if (!(cache
                   ? cacheHas(cache, computed)
                   : includes(arrays[othIndex], computed, comparator))
                 ) {
               continue outer;
             }
           }
           if (seen) {
             seen.push(computed);
           }
           result.push(value);
         }
       }
       return result;
     }
 
     /**
      * The base implementation of `_.invert` and `_.invertBy` which inverts
      * `object` with values transformed by `iteratee` and set by `setter`.
      *
      * @private
      * @param {Object} object The object to iterate over.
      * @param {Function} setter The function to set `accumulator` values.
      * @param {Function} iteratee The iteratee to transform values.
      * @param {Object} accumulator The initial inverted object.
      * @returns {Function} Returns `accumulator`.
      */
     function baseInverter(object, setter, iteratee, accumulator) {
       baseForOwn(object, function(value, key, object) {
         setter(accumulator, iteratee(value), key, object);
       });
       return accumulator;
     }
 
     /**
      * The base implementation of `_.invoke` without support for individual
      * method arguments.
      *
      * @private
      * @param {Object} object The object to query.
      * @param {Array|string} path The path of the method to invoke.
      * @param {Array} args The arguments to invoke the method with.
      * @returns {*} Returns the result of the invoked method.
      */
     function baseInvoke(object, path, args) {
       path = castPath(path, object);
       object = parent(object, path);
       var func = object == null ? object : object[toKey(last(path))];
       return func == null ? undefined : apply(func, object, args);
     }
 
     /**
      * The base implementation of `_.isArguments`.
      *
      * @private
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is an `arguments` object,
      */
     function baseIsArguments(value) {
       return isObjectLike(value) && baseGetTag(value) == argsTag;
     }
 
     /**
      * The base implementation of `_.isArrayBuffer` without Node.js optimizations.
      *
      * @private
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
      */
     function baseIsArrayBuffer(value) {
       return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;
     }
 
     /**
      * The base implementation of `_.isDate` without Node.js optimizations.
      *
      * @private
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
      */
     function baseIsDate(value) {
       return isObjectLike(value) && baseGetTag(value) == dateTag;
     }
 
     /**
      * The base implementation of `_.isEqual` which supports partial comparisons
      * and tracks traversed objects.
      *
      * @private
      * @param {*} value The value to compare.
      * @param {*} other The other value to compare.
      * @param {boolean} bitmask The bitmask flags.
      *  1 - Unordered comparison
      *  2 - Partial comparison
      * @param {Function} [customizer] The function to customize comparisons.
      * @param {Object} [stack] Tracks traversed `value` and `other` objects.
      * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
      */
     function baseIsEqual(value, other, bitmask, customizer, stack) {
       if (value === other) {
         return true;
       }
       if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {
         return value !== value && other !== other;
       }
       return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
     }
 
     /**
      * A specialized version of `baseIsEqual` for arrays and objects which performs
      * deep comparisons and tracks traversed objects enabling objects with circular
      * references to be compared.
      *
      * @private
      * @param {Object} object The object to compare.
      * @param {Object} other The other object to compare.
      * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
      * @param {Function} customizer The function to customize comparisons.
      * @param {Function} equalFunc The function to determine equivalents of values.
      * @param {Object} [stack] Tracks traversed `object` and `other` objects.
      * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
      */
     function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
       var objIsArr = isArray(object),
           othIsArr = isArray(other),
           objTag = objIsArr ? arrayTag : getTag(object),
           othTag = othIsArr ? arrayTag : getTag(other);
 
       objTag = objTag == argsTag ? objectTag : objTag;
       othTag = othTag == argsTag ? objectTag : othTag;
 
       var objIsObj = objTag == objectTag,
           othIsObj = othTag == objectTag,
           isSameTag = objTag == othTag;
 
       if (isSameTag && isBuffer(object)) {
         if (!isBuffer(other)) {
           return false;
         }
         objIsArr = true;
         objIsObj = false;
       }
       if (isSameTag && !objIsObj) {
         stack || (stack = new Stack);
         return (objIsArr || isTypedArray(object))
           ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
           : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
       }
       if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
         var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
             othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');
 
         if (objIsWrapped || othIsWrapped) {
           var objUnwrapped = objIsWrapped ? object.value() : object,
               othUnwrapped = othIsWrapped ? other.value() : other;
 
           stack || (stack = new Stack);
           return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
         }
       }
       if (!isSameTag) {
         return false;
       }
       stack || (stack = new Stack);
       return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
     }
 
     /**
      * The base implementation of `_.isMap` without Node.js optimizations.
      *
      * @private
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a map, else `false`.
      */
     function baseIsMap(value) {
       return isObjectLike(value) && getTag(value) == mapTag;
     }
 
     /**
      * The base implementation of `_.isMatch` without support for iteratee shorthands.
      *
      * @private
      * @param {Object} object The object to inspect.
      * @param {Object} source The object of property values to match.
      * @param {Array} matchData The property names, values, and compare flags to match.
      * @param {Function} [customizer] The function to customize comparisons.
      * @returns {boolean} Returns `true` if `object` is a match, else `false`.
      */
     function baseIsMatch(object, source, matchData, customizer) {
       var index = matchData.length,
           length = index,
           noCustomizer = !customizer;
 
       if (object == null) {
         return !length;
       }
       object = Object(object);
       while (index--) {
         var data = matchData[index];
         if ((noCustomizer && data[2])
               ? data[1] !== object[data[0]]
               : !(data[0] in object)
             ) {
           return false;
         }
       }
       while (++index < length) {
         data = matchData[index];
         var key = data[0],
             objValue = object[key],
             srcValue = data[1];
 
         if (noCustomizer && data[2]) {
           if (objValue === undefined && !(key in object)) {
             return false;
           }
         } else {
           var stack = new Stack;
           if (customizer) {
             var result = customizer(objValue, srcValue, key, object, source, stack);
           }
           if (!(result === undefined
                 ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)
                 : result
               )) {
             return false;
           }
         }
       }
       return true;
     }
 
     /**
      * The base implementation of `_.isNative` without bad shim checks.
      *
      * @private
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a native function,
      *  else `false`.
      */
     function baseIsNative(value) {
       if (!isObject(value) || isMasked(value)) {
         return false;
       }
       var pattern = isFunction(value) ? reIsNative : reIsHostCtor;
       return pattern.test(toSource(value));
     }
 
     /**
      * The base implementation of `_.isRegExp` without Node.js optimizations.
      *
      * @private
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
      */
     function baseIsRegExp(value) {
       return isObjectLike(value) && baseGetTag(value) == regexpTag;
     }
 
     /**
      * The base implementation of `_.isSet` without Node.js optimizations.
      *
      * @private
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a set, else `false`.
      */
     function baseIsSet(value) {
       return isObjectLike(value) && getTag(value) == setTag;
     }
 
     /**
      * The base implementation of `_.isTypedArray` without Node.js optimizations.
      *
      * @private
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
      */
     function baseIsTypedArray(value) {
       return isObjectLike(value) &&
         isLength(value.length) && !!typedArrayTags[baseGetTag(value)];
     }
 
     /**
      * The base implementation of `_.iteratee`.
      *
      * @private
      * @param {*} [value=_.identity] The value to convert to an iteratee.
      * @returns {Function} Returns the iteratee.
      */
     function baseIteratee(value) {
       // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.
       // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.
       if (typeof value == 'function') {
         return value;
       }
       if (value == null) {
         return identity;
       }
       if (typeof value == 'object') {
         return isArray(value)
           ? baseMatchesProperty(value[0], value[1])
           : baseMatches(value);
       }
       return property(value);
     }
 
     /**
      * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
      *
      * @private
      * @param {Object} object The object to query.
      * @returns {Array} Returns the array of property names.
      */
     function baseKeys(object) {
       if (!isPrototype(object)) {
         return nativeKeys(object);
       }
       var result = [];
       for (var key in Object(object)) {
         if (hasOwnProperty.call(object, key) && key != 'constructor') {
           result.push(key);
         }
       }
       return result;
     }
 
     /**
      * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.
      *
      * @private
      * @param {Object} object The object to query.
      * @returns {Array} Returns the array of property names.
      */
     function baseKeysIn(object) {
       if (!isObject(object)) {
         return nativeKeysIn(object);
       }
       var isProto = isPrototype(object),
           result = [];
 
       for (var key in object) {
         if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
           result.push(key);
         }
       }
       return result;
     }
 
     /**
      * The base implementation of `_.lt` which doesn't coerce arguments.
      *
      * @private
      * @param {*} value The value to compare.
      * @param {*} other The other value to compare.
      * @returns {boolean} Returns `true` if `value` is less than `other`,
      *  else `false`.
      */
     function baseLt(value, other) {
       return value < other;
     }
 
     /**
      * The base implementation of `_.map` without support for iteratee shorthands.
      *
      * @private
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} iteratee The function invoked per iteration.
      * @returns {Array} Returns the new mapped array.
      */
     function baseMap(collection, iteratee) {
       var index = -1,
           result = isArrayLike(collection) ? Array(collection.length) : [];
 
       baseEach(collection, function(value, key, collection) {
         result[++index] = iteratee(value, key, collection);
       });
       return result;
     }
 
     /**
      * The base implementation of `_.matches` which doesn't clone `source`.
      *
      * @private
      * @param {Object} source The object of property values to match.
      * @returns {Function} Returns the new spec function.
      */
     function baseMatches(source) {
       var matchData = getMatchData(source);
       if (matchData.length == 1 && matchData[0][2]) {
         return matchesStrictComparable(matchData[0][0], matchData[0][1]);
       }
       return function(object) {
         return object === source || baseIsMatch(object, source, matchData);
       };
     }
 
     /**
      * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.
      *
      * @private
      * @param {string} path The path of the property to get.
      * @param {*} srcValue The value to match.
      * @returns {Function} Returns the new spec function.
      */
     function baseMatchesProperty(path, srcValue) {
       if (isKey(path) && isStrictComparable(srcValue)) {
         return matchesStrictComparable(toKey(path), srcValue);
       }
       return function(object) {
         var objValue = get(object, path);
         return (objValue === undefined && objValue === srcValue)
           ? hasIn(object, path)
           : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);
       };
     }
 
     /**
      * The base implementation of `_.merge` without support for multiple sources.
      *
      * @private
      * @param {Object} object The destination object.
      * @param {Object} source The source object.
      * @param {number} srcIndex The index of `source`.
      * @param {Function} [customizer] The function to customize merged values.
      * @param {Object} [stack] Tracks traversed source values and their merged
      *  counterparts.
      */
     function baseMerge(object, source, srcIndex, customizer, stack) {
       if (object === source) {
         return;
       }
       baseFor(source, function(srcValue, key) {
         stack || (stack = new Stack);
         if (isObject(srcValue)) {
           baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
         }
         else {
           var newValue = customizer
             ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)
             : undefined;
 
           if (newValue === undefined) {
             newValue = srcValue;
           }
           assignMergeValue(object, key, newValue);
         }
       }, keysIn);
     }
 
     /**
      * A specialized version of `baseMerge` for arrays and objects which performs
      * deep merges and tracks traversed objects enabling objects with circular
      * references to be merged.
      *
      * @private
      * @param {Object} object The destination object.
      * @param {Object} source The source object.
      * @param {string} key The key of the value to merge.
      * @param {number} srcIndex The index of `source`.
      * @param {Function} mergeFunc The function to merge values.
      * @param {Function} [customizer] The function to customize assigned values.
      * @param {Object} [stack] Tracks traversed source values and their merged
      *  counterparts.
      */
     function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {
       var objValue = safeGet(object, key),
           srcValue = safeGet(source, key),
           stacked = stack.get(srcValue);
 
       if (stacked) {
         assignMergeValue(object, key, stacked);
         return;
       }
       var newValue = customizer
         ? customizer(objValue, srcValue, (key + ''), object, source, stack)
         : undefined;
 
       var isCommon = newValue === undefined;
 
       if (isCommon) {
         var isArr = isArray(srcValue),
             isBuff = !isArr && isBuffer(srcValue),
             isTyped = !isArr && !isBuff && isTypedArray(srcValue);
 
         newValue = srcValue;
         if (isArr || isBuff || isTyped) {
           if (isArray(objValue)) {
             newValue = objValue;
           }
           else if (isArrayLikeObject(objValue)) {
             newValue = copyArray(objValue);
           }
           else if (isBuff) {
             isCommon = false;
             newValue = cloneBuffer(srcValue, true);
           }
           else if (isTyped) {
             isCommon = false;
             newValue = cloneTypedArray(srcValue, true);
           }
           else {
             newValue = [];
           }
         }
         else if (isPlainObject(srcValue) || isArguments(srcValue)) {
           newValue = objValue;
           if (isArguments(objValue)) {
             newValue = toPlainObject(objValue);
           }
           else if (!isObject(objValue) || isFunction(objValue)) {
             newValue = initCloneObject(srcValue);
           }
         }
         else {
           isCommon = false;
         }
       }
       if (isCommon) {
         // Recursively merge objects and arrays (susceptible to call stack limits).
         stack.set(srcValue, newValue);
         mergeFunc(newValue, srcValue, srcIndex, customizer, stack);
         stack['delete'](srcValue);
       }
       assignMergeValue(object, key, newValue);
     }
 
     /**
      * The base implementation of `_.nth` which doesn't coerce arguments.
      *
      * @private
      * @param {Array} array The array to query.
      * @param {number} n The index of the element to return.
      * @returns {*} Returns the nth element of `array`.
      */
     function baseNth(array, n) {
       var length = array.length;
       if (!length) {
         return;
       }
       n += n < 0 ? length : 0;
       return isIndex(n, length) ? array[n] : undefined;
     }
 
     /**
      * The base implementation of `_.orderBy` without param guards.
      *
      * @private
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.
      * @param {string[]} orders The sort orders of `iteratees`.
      * @returns {Array} Returns the new sorted array.
      */
     function baseOrderBy(collection, iteratees, orders) {
       if (iteratees.length) {
         iteratees = arrayMap(iteratees, function(iteratee) {
           if (isArray(iteratee)) {
             return function(value) {
               return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee);
             }
           }
           return iteratee;
         });
       } else {
         iteratees = [identity];
       }
 
       var index = -1;
       iteratees = arrayMap(iteratees, baseUnary(getIteratee()));
 
       var result = baseMap(collection, function(value, key, collection) {
         var criteria = arrayMap(iteratees, function(iteratee) {
           return iteratee(value);
         });
         return { 'criteria': criteria, 'index': ++index, 'value': value };
       });
 
       return baseSortBy(result, function(object, other) {
         return compareMultiple(object, other, orders);
       });
     }
 
     /**
      * The base implementation of `_.pick` without support for individual
      * property identifiers.
      *
      * @private
      * @param {Object} object The source object.
      * @param {string[]} paths The property paths to pick.
      * @returns {Object} Returns the new object.
      */
     function basePick(object, paths) {
       return basePickBy(object, paths, function(value, path) {
         return hasIn(object, path);
       });
     }
 
     /**
      * The base implementation of  `_.pickBy` without support for iteratee shorthands.
      *
      * @private
      * @param {Object} object The source object.
      * @param {string[]} paths The property paths to pick.
      * @param {Function} predicate The function invoked per property.
      * @returns {Object} Returns the new object.
      */
     function basePickBy(object, paths, predicate) {
       var index = -1,
           length = paths.length,
           result = {};
 
       while (++index < length) {
         var path = paths[index],
             value = baseGet(object, path);
 
         if (predicate(value, path)) {
           baseSet(result, castPath(path, object), value);
         }
       }
       return result;
     }
 
     /**
      * A specialized version of `baseProperty` which supports deep paths.
      *
      * @private
      * @param {Array|string} path The path of the property to get.
      * @returns {Function} Returns the new accessor function.
      */
     function basePropertyDeep(path) {
       return function(object) {
         return baseGet(object, path);
       };
     }
 
     /**
      * The base implementation of `_.pullAllBy` without support for iteratee
      * shorthands.
      *
      * @private
      * @param {Array} array The array to modify.
      * @param {Array} values The values to remove.
      * @param {Function} [iteratee] The iteratee invoked per element.
      * @param {Function} [comparator] The comparator invoked per element.
      * @returns {Array} Returns `array`.
      */
     function basePullAll(array, values, iteratee, comparator) {
       var indexOf = comparator ? baseIndexOfWith : baseIndexOf,
           index = -1,
           length = values.length,
           seen = array;
 
       if (array === values) {
         values = copyArray(values);
       }
       if (iteratee) {
         seen = arrayMap(array, baseUnary(iteratee));
       }
       while (++index < length) {
         var fromIndex = 0,
             value = values[index],
             computed = iteratee ? iteratee(value) : value;
 
         while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {
           if (seen !== array) {
             splice.call(seen, fromIndex, 1);
           }
           splice.call(array, fromIndex, 1);
         }
       }
       return array;
     }
 
     /**
      * The base implementation of `_.pullAt` without support for individual
      * indexes or capturing the removed elements.
      *
      * @private
      * @param {Array} array The array to modify.
      * @param {number[]} indexes The indexes of elements to remove.
      * @returns {Array} Returns `array`.
      */
     function basePullAt(array, indexes) {
       var length = array ? indexes.length : 0,
           lastIndex = length - 1;
 
       while (length--) {
         var index = indexes[length];
         if (length == lastIndex || index !== previous) {
           var previous = index;
           if (isIndex(index)) {
             splice.call(array, index, 1);
           } else {
             baseUnset(array, index);
           }
         }
       }
       return array;
     }
 
     /**
      * The base implementation of `_.random` without support for returning
      * floating-point numbers.
      *
      * @private
      * @param {number} lower The lower bound.
      * @param {number} upper The upper bound.
      * @returns {number} Returns the random number.
      */
     function baseRandom(lower, upper) {
       return lower + nativeFloor(nativeRandom() * (upper - lower + 1));
     }
 
     /**
      * The base implementation of `_.range` and `_.rangeRight` which doesn't
      * coerce arguments.
      *
      * @private
      * @param {number} start The start of the range.
      * @param {number} end The end of the range.
      * @param {number} step The value to increment or decrement by.
      * @param {boolean} [fromRight] Specify iterating from right to left.
      * @returns {Array} Returns the range of numbers.
      */
     function baseRange(start, end, step, fromRight) {
       var index = -1,
           length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),
           result = Array(length);
 
       while (length--) {
         result[fromRight ? length : ++index] = start;
         start += step;
       }
       return result;
     }
 
     /**
      * The base implementation of `_.repeat` which doesn't coerce arguments.
      *
      * @private
      * @param {string} string The string to repeat.
      * @param {number} n The number of times to repeat the string.
      * @returns {string} Returns the repeated string.
      */
     function baseRepeat(string, n) {
       var result = '';
       if (!string || n < 1 || n > MAX_SAFE_INTEGER) {
         return result;
       }
       // Leverage the exponentiation by squaring algorithm for a faster repeat.
       // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.
       do {
         if (n % 2) {
           result += string;
         }
         n = nativeFloor(n / 2);
         if (n) {
           string += string;
         }
       } while (n);
 
       return result;
     }
 
     /**
      * The base implementation of `_.rest` which doesn't validate or coerce arguments.
      *
      * @private
      * @param {Function} func The function to apply a rest parameter to.
      * @param {number} [start=func.length-1] The start position of the rest parameter.
      * @returns {Function} Returns the new function.
      */
     function baseRest(func, start) {
       return setToString(overRest(func, start, identity), func + '');
     }
 
     /**
      * The base implementation of `_.sample`.
      *
      * @private
      * @param {Array|Object} collection The collection to sample.
      * @returns {*} Returns the random element.
      */
     function baseSample(collection) {
       return arraySample(values(collection));
     }
 
     /**
      * The base implementation of `_.sampleSize` without param guards.
      *
      * @private
      * @param {Array|Object} collection The collection to sample.
      * @param {number} n The number of elements to sample.
      * @returns {Array} Returns the random elements.
      */
     function baseSampleSize(collection, n) {
       var array = values(collection);
       return shuffleSelf(array, baseClamp(n, 0, array.length));
     }
 
     /**
      * The base implementation of `_.set`.
      *
      * @private
      * @param {Object} object The object to modify.
      * @param {Array|string} path The path of the property to set.
      * @param {*} value The value to set.
      * @param {Function} [customizer] The function to customize path creation.
      * @returns {Object} Returns `object`.
      */
     function baseSet(object, path, value, customizer) {
       if (!isObject(object)) {
         return object;
       }
       path = castPath(path, object);
 
       var index = -1,
           length = path.length,
           lastIndex = length - 1,
           nested = object;
 
       while (nested != null && ++index < length) {
         var key = toKey(path[index]),
             newValue = value;
 
         if (key === '__proto__' || key === 'constructor' || key === 'prototype') {
           return object;
         }
 
         if (index != lastIndex) {
           var objValue = nested[key];
           newValue = customizer ? customizer(objValue, key, nested) : undefined;
           if (newValue === undefined) {
             newValue = isObject(objValue)
               ? objValue
               : (isIndex(path[index + 1]) ? [] : {});
           }
         }
         assignValue(nested, key, newValue);
         nested = nested[key];
       }
       return object;
     }
 
     /**
      * The base implementation of `setData` without support for hot loop shorting.
      *
      * @private
      * @param {Function} func The function to associate metadata with.
      * @param {*} data The metadata.
      * @returns {Function} Returns `func`.
      */
     var baseSetData = !metaMap ? identity : function(func, data) {
       metaMap.set(func, data);
       return func;
     };
 
     /**
      * The base implementation of `setToString` without support for hot loop shorting.
      *
      * @private
      * @param {Function} func The function to modify.
      * @param {Function} string The `toString` result.
      * @returns {Function} Returns `func`.
      */
     var baseSetToString = !defineProperty ? identity : function(func, string) {
       return defineProperty(func, 'toString', {
         'configurable': true,
         'enumerable': false,
         'value': constant(string),
         'writable': true
       });
     };
 
     /**
      * The base implementation of `_.shuffle`.
      *
      * @private
      * @param {Array|Object} collection The collection to shuffle.
      * @returns {Array} Returns the new shuffled array.
      */
     function baseShuffle(collection) {
       return shuffleSelf(values(collection));
     }
 
     /**
      * The base implementation of `_.slice` without an iteratee call guard.
      *
      * @private
      * @param {Array} array The array to slice.
      * @param {number} [start=0] The start position.
      * @param {number} [end=array.length] The end position.
      * @returns {Array} Returns the slice of `array`.
      */
     function baseSlice(array, start, end) {
       var index = -1,
           length = array.length;
 
       if (start < 0) {
         start = -start > length ? 0 : (length + start);
       }
       end = end > length ? length : end;
       if (end < 0) {
         end += length;
       }
       length = start > end ? 0 : ((end - start) >>> 0);
       start >>>= 0;
 
       var result = Array(length);
       while (++index < length) {
         result[index] = array[index + start];
       }
       return result;
     }
 
     /**
      * The base implementation of `_.some` without support for iteratee shorthands.
      *
      * @private
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} predicate The function invoked per iteration.
      * @returns {boolean} Returns `true` if any element passes the predicate check,
      *  else `false`.
      */
     function baseSome(collection, predicate) {
       var result;
 
       baseEach(collection, function(value, index, collection) {
         result = predicate(value, index, collection);
         return !result;
       });
       return !!result;
     }
 
     /**
      * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which
      * performs a binary search of `array` to determine the index at which `value`
      * should be inserted into `array` in order to maintain its sort order.
      *
      * @private
      * @param {Array} array The sorted array to inspect.
      * @param {*} value The value to evaluate.
      * @param {boolean} [retHighest] Specify returning the highest qualified index.
      * @returns {number} Returns the index at which `value` should be inserted
      *  into `array`.
      */
     function baseSortedIndex(array, value, retHighest) {
       var low = 0,
           high = array == null ? low : array.length;
 
       if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {
         while (low < high) {
           var mid = (low + high) >>> 1,
               computed = array[mid];
 
           if (computed !== null && !isSymbol(computed) &&
               (retHighest ? (computed <= value) : (computed < value))) {
             low = mid + 1;
           } else {
             high = mid;
           }
         }
         return high;
       }
       return baseSortedIndexBy(array, value, identity, retHighest);
     }
 
     /**
      * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`
      * which invokes `iteratee` for `value` and each element of `array` to compute
      * their sort ranking. The iteratee is invoked with one argument; (value).
      *
      * @private
      * @param {Array} array The sorted array to inspect.
      * @param {*} value The value to evaluate.
      * @param {Function} iteratee The iteratee invoked per element.
      * @param {boolean} [retHighest] Specify returning the highest qualified index.
      * @returns {number} Returns the index at which `value` should be inserted
      *  into `array`.
      */
     function baseSortedIndexBy(array, value, iteratee, retHighest) {
       var low = 0,
           high = array == null ? 0 : array.length;
       if (high === 0) {
         return 0;
       }
 
       value = iteratee(value);
       var valIsNaN = value !== value,
           valIsNull = value === null,
           valIsSymbol = isSymbol(value),
           valIsUndefined = value === undefined;
 
       while (low < high) {
         var mid = nativeFloor((low + high) / 2),
             computed = iteratee(array[mid]),
             othIsDefined = computed !== undefined,
             othIsNull = computed === null,
             othIsReflexive = computed === computed,
             othIsSymbol = isSymbol(computed);
 
         if (valIsNaN) {
           var setLow = retHighest || othIsReflexive;
         } else if (valIsUndefined) {
           setLow = othIsReflexive && (retHighest || othIsDefined);
         } else if (valIsNull) {
           setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);
         } else if (valIsSymbol) {
           setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);
         } else if (othIsNull || othIsSymbol) {
           setLow = false;
         } else {
           setLow = retHighest ? (computed <= value) : (computed < value);
         }
         if (setLow) {
           low = mid + 1;
         } else {
           high = mid;
         }
       }
       return nativeMin(high, MAX_ARRAY_INDEX);
     }
 
     /**
      * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without
      * support for iteratee shorthands.
      *
      * @private
      * @param {Array} array The array to inspect.
      * @param {Function} [iteratee] The iteratee invoked per element.
      * @returns {Array} Returns the new duplicate free array.
      */
     function baseSortedUniq(array, iteratee) {
       var index = -1,
           length = array.length,
           resIndex = 0,
           result = [];
 
       while (++index < length) {
         var value = array[index],
             computed = iteratee ? iteratee(value) : value;
 
         if (!index || !eq(computed, seen)) {
           var seen = computed;
           result[resIndex++] = value === 0 ? 0 : value;
         }
       }
       return result;
     }
 
     /**
      * The base implementation of `_.toNumber` which doesn't ensure correct
      * conversions of binary, hexadecimal, or octal string values.
      *
      * @private
      * @param {*} value The value to process.
      * @returns {number} Returns the number.
      */
     function baseToNumber(value) {
       if (typeof value == 'number') {
         return value;
       }
       if (isSymbol(value)) {
         return NAN;
       }
       return +value;
     }
 
     /**
      * The base implementation of `_.toString` which doesn't convert nullish
      * values to empty strings.
      *
      * @private
      * @param {*} value The value to process.
      * @returns {string} Returns the string.
      */
     function baseToString(value) {
       // Exit early for strings to avoid a performance hit in some environments.
       if (typeof value == 'string') {
         return value;
       }
       if (isArray(value)) {
         // Recursively convert values (susceptible to call stack limits).
         return arrayMap(value, baseToString) + '';
       }
       if (isSymbol(value)) {
         return symbolToString ? symbolToString.call(value) : '';
       }
       var result = (value + '');
       return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
     }
 
     /**
      * The base implementation of `_.uniqBy` without support for iteratee shorthands.
      *
      * @private
      * @param {Array} array The array to inspect.
      * @param {Function} [iteratee] The iteratee invoked per element.
      * @param {Function} [comparator] The comparator invoked per element.
      * @returns {Array} Returns the new duplicate free array.
      */
     function baseUniq(array, iteratee, comparator) {
       var index = -1,
           includes = arrayIncludes,
           length = array.length,
           isCommon = true,
           result = [],
           seen = result;
 
       if (comparator) {
         isCommon = false;
         includes = arrayIncludesWith;
       }
       else if (length >= LARGE_ARRAY_SIZE) {
         var set = iteratee ? null : createSet(array);
         if (set) {
           return setToArray(set);
         }
         isCommon = false;
         includes = cacheHas;
         seen = new SetCache;
       }
       else {
         seen = iteratee ? [] : result;
       }
       outer:
       while (++index < length) {
         var value = array[index],
             computed = iteratee ? iteratee(value) : value;
 
         value = (comparator || value !== 0) ? value : 0;
         if (isCommon && computed === computed) {
           var seenIndex = seen.length;
           while (seenIndex--) {
             if (seen[seenIndex] === computed) {
               continue outer;
             }
           }
           if (iteratee) {
             seen.push(computed);
           }
           result.push(value);
         }
         else if (!includes(seen, computed, comparator)) {
           if (seen !== result) {
             seen.push(computed);
           }
           result.push(value);
         }
       }
       return result;
     }
 
     /**
      * The base implementation of `_.unset`.
      *
      * @private
      * @param {Object} object The object to modify.
      * @param {Array|string} path The property path to unset.
      * @returns {boolean} Returns `true` if the property is deleted, else `false`.
      */
     function baseUnset(object, path) {
       path = castPath(path, object);
       object = parent(object, path);
       return object == null || delete object[toKey(last(path))];
     }
 
     /**
      * The base implementation of `_.update`.
      *
      * @private
      * @param {Object} object The object to modify.
      * @param {Array|string} path The path of the property to update.
      * @param {Function} updater The function to produce the updated value.
      * @param {Function} [customizer] The function to customize path creation.
      * @returns {Object} Returns `object`.
      */
     function baseUpdate(object, path, updater, customizer) {
       return baseSet(object, path, updater(baseGet(object, path)), customizer);
     }
 
     /**
      * The base implementation of methods like `_.dropWhile` and `_.takeWhile`
      * without support for iteratee shorthands.
      *
      * @private
      * @param {Array} array The array to query.
      * @param {Function} predicate The function invoked per iteration.
      * @param {boolean} [isDrop] Specify dropping elements instead of taking them.
      * @param {boolean} [fromRight] Specify iterating from right to left.
      * @returns {Array} Returns the slice of `array`.
      */
     function baseWhile(array, predicate, isDrop, fromRight) {
       var length = array.length,
           index = fromRight ? length : -1;
 
       while ((fromRight ? index-- : ++index < length) &&
         predicate(array[index], index, array)) {}
 
       return isDrop
         ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))
         : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));
     }
 
     /**
      * The base implementation of `wrapperValue` which returns the result of
      * performing a sequence of actions on the unwrapped `value`, where each
      * successive action is supplied the return value of the previous.
      *
      * @private
      * @param {*} value The unwrapped value.
      * @param {Array} actions Actions to perform to resolve the unwrapped value.
      * @returns {*} Returns the resolved value.
      */
     function baseWrapperValue(value, actions) {
       var result = value;
       if (result instanceof LazyWrapper) {
         result = result.value();
       }
       return arrayReduce(actions, function(result, action) {
         return action.func.apply(action.thisArg, arrayPush([result], action.args));
       }, result);
     }
 
     /**
      * The base implementation of methods like `_.xor`, without support for
      * iteratee shorthands, that accepts an array of arrays to inspect.
      *
      * @private
      * @param {Array} arrays The arrays to inspect.
      * @param {Function} [iteratee] The iteratee invoked per element.
      * @param {Function} [comparator] The comparator invoked per element.
      * @returns {Array} Returns the new array of values.
      */
     function baseXor(arrays, iteratee, comparator) {
       var length = arrays.length;
       if (length < 2) {
         return length ? baseUniq(arrays[0]) : [];
       }
       var index = -1,
           result = Array(length);
 
       while (++index < length) {
         var array = arrays[index],
             othIndex = -1;
 
         while (++othIndex < length) {
           if (othIndex != index) {
             result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);
           }
         }
       }
       return baseUniq(baseFlatten(result, 1), iteratee, comparator);
     }
 
     /**
      * This base implementation of `_.zipObject` which assigns values using `assignFunc`.
      *
      * @private
      * @param {Array} props The property identifiers.
      * @param {Array} values The property values.
      * @param {Function} assignFunc The function to assign values.
      * @returns {Object} Returns the new object.
      */
     function baseZipObject(props, values, assignFunc) {
       var index = -1,
           length = props.length,
           valsLength = values.length,
           result = {};
 
       while (++index < length) {
         var value = index < valsLength ? values[index] : undefined;
         assignFunc(result, props[index], value);
       }
       return result;
     }
 
     /**
      * Casts `value` to an empty array if it's not an array like object.
      *
      * @private
      * @param {*} value The value to inspect.
      * @returns {Array|Object} Returns the cast array-like object.
      */
     function castArrayLikeObject(value) {
       return isArrayLikeObject(value) ? value : [];
     }
 
     /**
      * Casts `value` to `identity` if it's not a function.
      *
      * @private
      * @param {*} value The value to inspect.
      * @returns {Function} Returns cast function.
      */
     function castFunction(value) {
       return typeof value == 'function' ? value : identity;
     }
 
     /**
      * Casts `value` to a path array if it's not one.
      *
      * @private
      * @param {*} value The value to inspect.
      * @param {Object} [object] The object to query keys on.
      * @returns {Array} Returns the cast property path array.
      */
     function castPath(value, object) {
       if (isArray(value)) {
         return value;
       }
       return isKey(value, object) ? [value] : stringToPath(toString(value));
     }
 
     /**
      * A `baseRest` alias which can be replaced with `identity` by module
      * replacement plugins.
      *
      * @private
      * @type {Function}
      * @param {Function} func The function to apply a rest parameter to.
      * @returns {Function} Returns the new function.
      */
     var castRest = baseRest;
 
     /**
      * Casts `array` to a slice if it's needed.
      *
      * @private
      * @param {Array} array The array to inspect.
      * @param {number} start The start position.
      * @param {number} [end=array.length] The end position.
      * @returns {Array} Returns the cast slice.
      */
     function castSlice(array, start, end) {
       var length = array.length;
       end = end === undefined ? length : end;
       return (!start && end >= length) ? array : baseSlice(array, start, end);
     }
 
     /**
      * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).
      *
      * @private
      * @param {number|Object} id The timer id or timeout object of the timer to clear.
      */
     var clearTimeout = ctxClearTimeout || function(id) {
       return root.clearTimeout(id);
     };
 
     /**
      * Creates a clone of  `buffer`.
      *
      * @private
      * @param {Buffer} buffer The buffer to clone.
      * @param {boolean} [isDeep] Specify a deep clone.
      * @returns {Buffer} Returns the cloned buffer.
      */
     function cloneBuffer(buffer, isDeep) {
       if (isDeep) {
         return buffer.slice();
       }
       var length = buffer.length,
           result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);
 
       buffer.copy(result);
       return result;
     }
 
     /**
      * Creates a clone of `arrayBuffer`.
      *
      * @private
      * @param {ArrayBuffer} arrayBuffer The array buffer to clone.
      * @returns {ArrayBuffer} Returns the cloned array buffer.
      */
     function cloneArrayBuffer(arrayBuffer) {
       var result = new arrayBuffer.constructor(arrayBuffer.byteLength);
       new Uint8Array(result).set(new Uint8Array(arrayBuffer));
       return result;
     }
 
     /**
      * Creates a clone of `dataView`.
      *
      * @private
      * @param {Object} dataView The data view to clone.
      * @param {boolean} [isDeep] Specify a deep clone.
      * @returns {Object} Returns the cloned data view.
      */
     function cloneDataView(dataView, isDeep) {
       var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;
       return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);
     }
 
     /**
      * Creates a clone of `regexp`.
      *
      * @private
      * @param {Object} regexp The regexp to clone.
      * @returns {Object} Returns the cloned regexp.
      */
     function cloneRegExp(regexp) {
       var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));
       result.lastIndex = regexp.lastIndex;
       return result;
     }
 
     /**
      * Creates a clone of the `symbol` object.
      *
      * @private
      * @param {Object} symbol The symbol object to clone.
      * @returns {Object} Returns the cloned symbol object.
      */
     function cloneSymbol(symbol) {
       return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};
     }
 
     /**
      * Creates a clone of `typedArray`.
      *
      * @private
      * @param {Object} typedArray The typed array to clone.
      * @param {boolean} [isDeep] Specify a deep clone.
      * @returns {Object} Returns the cloned typed array.
      */
     function cloneTypedArray(typedArray, isDeep) {
       var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;
       return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);
     }
 
     /**
      * Compares values to sort them in ascending order.
      *
      * @private
      * @param {*} value The value to compare.
      * @param {*} other The other value to compare.
      * @returns {number} Returns the sort order indicator for `value`.
      */
     function compareAscending(value, other) {
       if (value !== other) {
         var valIsDefined = value !== undefined,
             valIsNull = value === null,
             valIsReflexive = value === value,
             valIsSymbol = isSymbol(value);
 
         var othIsDefined = other !== undefined,
             othIsNull = other === null,
             othIsReflexive = other === other,
             othIsSymbol = isSymbol(other);
 
         if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||
             (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||
             (valIsNull && othIsDefined && othIsReflexive) ||
             (!valIsDefined && othIsReflexive) ||
             !valIsReflexive) {
           return 1;
         }
         if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||
             (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||
             (othIsNull && valIsDefined && valIsReflexive) ||
             (!othIsDefined && valIsReflexive) ||
             !othIsReflexive) {
           return -1;
         }
       }
       return 0;
     }
 
     /**
      * Used by `_.orderBy` to compare multiple properties of a value to another
      * and stable sort them.
      *
      * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,
      * specify an order of "desc" for descending or "asc" for ascending sort order
      * of corresponding values.
      *
      * @private
      * @param {Object} object The object to compare.
      * @param {Object} other The other object to compare.
      * @param {boolean[]|string[]} orders The order to sort by for each property.
      * @returns {number} Returns the sort order indicator for `object`.
      */
     function compareMultiple(object, other, orders) {
       var index = -1,
           objCriteria = object.criteria,
           othCriteria = other.criteria,
           length = objCriteria.length,
           ordersLength = orders.length;
 
       while (++index < length) {
         var result = compareAscending(objCriteria[index], othCriteria[index]);
         if (result) {
           if (index >= ordersLength) {
             return result;
           }
           var order = orders[index];
           return result * (order == 'desc' ? -1 : 1);
         }
       }
       // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
       // that causes it, under certain circumstances, to provide the same value for
       // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247
       // for more details.
       //
       // This also ensures a stable sort in V8 and other engines.
       // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.
       return object.index - other.index;
     }
 
     /**
      * Creates an array that is the composition of partially applied arguments,
      * placeholders, and provided arguments into a single array of arguments.
      *
      * @private
      * @param {Array} args The provided arguments.
      * @param {Array} partials The arguments to prepend to those provided.
      * @param {Array} holders The `partials` placeholder indexes.
      * @params {boolean} [isCurried] Specify composing for a curried function.
      * @returns {Array} Returns the new array of composed arguments.
      */
     function composeArgs(args, partials, holders, isCurried) {
       var argsIndex = -1,
           argsLength = args.length,
           holdersLength = holders.length,
           leftIndex = -1,
           leftLength = partials.length,
           rangeLength = nativeMax(argsLength - holdersLength, 0),
           result = Array(leftLength + rangeLength),
           isUncurried = !isCurried;
 
       while (++leftIndex < leftLength) {
         result[leftIndex] = partials[leftIndex];
       }
       while (++argsIndex < holdersLength) {
         if (isUncurried || argsIndex < argsLength) {
           result[holders[argsIndex]] = args[argsIndex];
         }
       }
       while (rangeLength--) {
         result[leftIndex++] = args[argsIndex++];
       }
       return result;
     }
 
     /**
      * This function is like `composeArgs` except that the arguments composition
      * is tailored for `_.partialRight`.
      *
      * @private
      * @param {Array} args The provided arguments.
      * @param {Array} partials The arguments to append to those provided.
      * @param {Array} holders The `partials` placeholder indexes.
      * @params {boolean} [isCurried] Specify composing for a curried function.
      * @returns {Array} Returns the new array of composed arguments.
      */
     function composeArgsRight(args, partials, holders, isCurried) {
       var argsIndex = -1,
           argsLength = args.length,
           holdersIndex = -1,
           holdersLength = holders.length,
           rightIndex = -1,
           rightLength = partials.length,
           rangeLength = nativeMax(argsLength - holdersLength, 0),
           result = Array(rangeLength + rightLength),
           isUncurried = !isCurried;
 
       while (++argsIndex < rangeLength) {
         result[argsIndex] = args[argsIndex];
       }
       var offset = argsIndex;
       while (++rightIndex < rightLength) {
         result[offset + rightIndex] = partials[rightIndex];
       }
       while (++holdersIndex < holdersLength) {
         if (isUncurried || argsIndex < argsLength) {
           result[offset + holders[holdersIndex]] = args[argsIndex++];
         }
       }
       return result;
     }
 
     /**
      * Copies the values of `source` to `array`.
      *
      * @private
      * @param {Array} source The array to copy values from.
      * @param {Array} [array=[]] The array to copy values to.
      * @returns {Array} Returns `array`.
      */
     function copyArray(source, array) {
       var index = -1,
           length = source.length;
 
       array || (array = Array(length));
       while (++index < length) {
         array[index] = source[index];
       }
       return array;
     }
 
     /**
      * Copies properties of `source` to `object`.
      *
      * @private
      * @param {Object} source The object to copy properties from.
      * @param {Array} props The property identifiers to copy.
      * @param {Object} [object={}] The object to copy properties to.
      * @param {Function} [customizer] The function to customize copied values.
      * @returns {Object} Returns `object`.
      */
     function copyObject(source, props, object, customizer) {
       var isNew = !object;
       object || (object = {});
 
       var index = -1,
           length = props.length;
 
       while (++index < length) {
         var key = props[index];
 
         var newValue = customizer
           ? customizer(object[key], source[key], key, object, source)
           : undefined;
 
         if (newValue === undefined) {
           newValue = source[key];
         }
         if (isNew) {
           baseAssignValue(object, key, newValue);
         } else {
           assignValue(object, key, newValue);
         }
       }
       return object;
     }
 
     /**
      * Copies own symbols of `source` to `object`.
      *
      * @private
      * @param {Object} source The object to copy symbols from.
      * @param {Object} [object={}] The object to copy symbols to.
      * @returns {Object} Returns `object`.
      */
     function copySymbols(source, object) {
       return copyObject(source, getSymbols(source), object);
     }
 
     /**
      * Copies own and inherited symbols of `source` to `object`.
      *
      * @private
      * @param {Object} source The object to copy symbols from.
      * @param {Object} [object={}] The object to copy symbols to.
      * @returns {Object} Returns `object`.
      */
     function copySymbolsIn(source, object) {
       return copyObject(source, getSymbolsIn(source), object);
     }
 
     /**
      * Creates a function like `_.groupBy`.
      *
      * @private
      * @param {Function} setter The function to set accumulator values.
      * @param {Function} [initializer] The accumulator object initializer.
      * @returns {Function} Returns the new aggregator function.
      */
     function createAggregator(setter, initializer) {
       return function(collection, iteratee) {
         var func = isArray(collection) ? arrayAggregator : baseAggregator,
             accumulator = initializer ? initializer() : {};
 
         return func(collection, setter, getIteratee(iteratee, 2), accumulator);
       };
     }
 
     /**
      * Creates a function like `_.assign`.
      *
      * @private
      * @param {Function} assigner The function to assign values.
      * @returns {Function} Returns the new assigner function.
      */
     function createAssigner(assigner) {
       return baseRest(function(object, sources) {
         var index = -1,
             length = sources.length,
             customizer = length > 1 ? sources[length - 1] : undefined,
             guard = length > 2 ? sources[2] : undefined;
 
         customizer = (assigner.length > 3 && typeof customizer == 'function')
           ? (length--, customizer)
           : undefined;
 
         if (guard && isIterateeCall(sources[0], sources[1], guard)) {
           customizer = length < 3 ? undefined : customizer;
           length = 1;
         }
         object = Object(object);
         while (++index < length) {
           var source = sources[index];
           if (source) {
             assigner(object, source, index, customizer);
           }
         }
         return object;
       });
     }
 
     /**
      * Creates a `baseEach` or `baseEachRight` function.
      *
      * @private
      * @param {Function} eachFunc The function to iterate over a collection.
      * @param {boolean} [fromRight] Specify iterating from right to left.
      * @returns {Function} Returns the new base function.
      */
     function createBaseEach(eachFunc, fromRight) {
       return function(collection, iteratee) {
         if (collection == null) {
           return collection;
         }
         if (!isArrayLike(collection)) {
           return eachFunc(collection, iteratee);
         }
         var length = collection.length,
             index = fromRight ? length : -1,
             iterable = Object(collection);
 
         while ((fromRight ? index-- : ++index < length)) {
           if (iteratee(iterable[index], index, iterable) === false) {
             break;
           }
         }
         return collection;
       };
     }
 
     /**
      * Creates a base function for methods like `_.forIn` and `_.forOwn`.
      *
      * @private
      * @param {boolean} [fromRight] Specify iterating from right to left.
      * @returns {Function} Returns the new base function.
      */
     function createBaseFor(fromRight) {
       return function(object, iteratee, keysFunc) {
         var index = -1,
             iterable = Object(object),
             props = keysFunc(object),
             length = props.length;
 
         while (length--) {
           var key = props[fromRight ? length : ++index];
           if (iteratee(iterable[key], key, iterable) === false) {
             break;
           }
         }
         return object;
       };
     }
 
     /**
      * Creates a function that wraps `func` to invoke it with the optional `this`
      * binding of `thisArg`.
      *
      * @private
      * @param {Function} func The function to wrap.
      * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
      * @param {*} [thisArg] The `this` binding of `func`.
      * @returns {Function} Returns the new wrapped function.
      */
     function createBind(func, bitmask, thisArg) {
       var isBind = bitmask & WRAP_BIND_FLAG,
           Ctor = createCtor(func);
 
       function wrapper() {
         var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
         return fn.apply(isBind ? thisArg : this, arguments);
       }
       return wrapper;
     }
 
     /**
      * Creates a function like `_.lowerFirst`.
      *
      * @private
      * @param {string} methodName The name of the `String` case method to use.
      * @returns {Function} Returns the new case function.
      */
     function createCaseFirst(methodName) {
       return function(string) {
         string = toString(string);
 
         var strSymbols = hasUnicode(string)
           ? stringToArray(string)
           : undefined;
 
         var chr = strSymbols
           ? strSymbols[0]
           : string.charAt(0);
 
         var trailing = strSymbols
           ? castSlice(strSymbols, 1).join('')
           : string.slice(1);
 
         return chr[methodName]() + trailing;
       };
     }
 
     /**
      * Creates a function like `_.camelCase`.
      *
      * @private
      * @param {Function} callback The function to combine each word.
      * @returns {Function} Returns the new compounder function.
      */
     function createCompounder(callback) {
       return function(string) {
         return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');
       };
     }
 
     /**
      * Creates a function that produces an instance of `Ctor` regardless of
      * whether it was invoked as part of a `new` expression or by `call` or `apply`.
      *
      * @private
      * @param {Function} Ctor The constructor to wrap.
      * @returns {Function} Returns the new wrapped function.
      */
     function createCtor(Ctor) {
       return function() {
         // Use a `switch` statement to work with class constructors. See
         // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist
         // for more details.
         var args = arguments;
         switch (args.length) {
           case 0: return new Ctor;
           case 1: return new Ctor(args[0]);
           case 2: return new Ctor(args[0], args[1]);
           case 3: return new Ctor(args[0], args[1], args[2]);
           case 4: return new Ctor(args[0], args[1], args[2], args[3]);
           case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);
           case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);
           case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
         }
         var thisBinding = baseCreate(Ctor.prototype),
             result = Ctor.apply(thisBinding, args);
 
         // Mimic the constructor's `return` behavior.
         // See https://es5.github.io/#x13.2.2 for more details.
         return isObject(result) ? result : thisBinding;
       };
     }
 
     /**
      * Creates a function that wraps `func` to enable currying.
      *
      * @private
      * @param {Function} func The function to wrap.
      * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
      * @param {number} arity The arity of `func`.
      * @returns {Function} Returns the new wrapped function.
      */
     function createCurry(func, bitmask, arity) {
       var Ctor = createCtor(func);
 
       function wrapper() {
         var length = arguments.length,
             args = Array(length),
             index = length,
             placeholder = getHolder(wrapper);
 
         while (index--) {
           args[index] = arguments[index];
         }
         var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)
           ? []
           : replaceHolders(args, placeholder);
 
         length -= holders.length;
         if (length < arity) {
           return createRecurry(
             func, bitmask, createHybrid, wrapper.placeholder, undefined,
             args, holders, undefined, undefined, arity - length);
         }
         var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
         return apply(fn, this, args);
       }
       return wrapper;
     }
 
     /**
      * Creates a `_.find` or `_.findLast` function.
      *
      * @private
      * @param {Function} findIndexFunc The function to find the collection index.
      * @returns {Function} Returns the new find function.
      */
     function createFind(findIndexFunc) {
       return function(collection, predicate, fromIndex) {
         var iterable = Object(collection);
         if (!isArrayLike(collection)) {
           var iteratee = getIteratee(predicate, 3);
           collection = keys(collection);
           predicate = function(key) { return iteratee(iterable[key], key, iterable); };
         }
         var index = findIndexFunc(collection, predicate, fromIndex);
         return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;
       };
     }
 
     /**
      * Creates a `_.flow` or `_.flowRight` function.
      *
      * @private
      * @param {boolean} [fromRight] Specify iterating from right to left.
      * @returns {Function} Returns the new flow function.
      */
     function createFlow(fromRight) {
       return flatRest(function(funcs) {
         var length = funcs.length,
             index = length,
             prereq = LodashWrapper.prototype.thru;
 
         if (fromRight) {
           funcs.reverse();
         }
         while (index--) {
           var func = funcs[index];
           if (typeof func != 'function') {
             throw new TypeError(FUNC_ERROR_TEXT);
           }
           if (prereq && !wrapper && getFuncName(func) == 'wrapper') {
             var wrapper = new LodashWrapper([], true);
           }
         }
         index = wrapper ? index : length;
         while (++index < length) {
           func = funcs[index];
 
           var funcName = getFuncName(func),
               data = funcName == 'wrapper' ? getData(func) : undefined;
 
           if (data && isLaziable(data[0]) &&
                 data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&
                 !data[4].length && data[9] == 1
               ) {
             wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);
           } else {
             wrapper = (func.length == 1 && isLaziable(func))
               ? wrapper[funcName]()
               : wrapper.thru(func);
           }
         }
         return function() {
           var args = arguments,
               value = args[0];
 
           if (wrapper && args.length == 1 && isArray(value)) {
             return wrapper.plant(value).value();
           }
           var index = 0,
               result = length ? funcs[index].apply(this, args) : value;
 
           while (++index < length) {
             result = funcs[index].call(this, result);
           }
           return result;
         };
       });
     }
 
     /**
      * Creates a function that wraps `func` to invoke it with optional `this`
      * binding of `thisArg`, partial application, and currying.
      *
      * @private
      * @param {Function|string} func The function or method name to wrap.
      * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
      * @param {*} [thisArg] The `this` binding of `func`.
      * @param {Array} [partials] The arguments to prepend to those provided to
      *  the new function.
      * @param {Array} [holders] The `partials` placeholder indexes.
      * @param {Array} [partialsRight] The arguments to append to those provided
      *  to the new function.
      * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.
      * @param {Array} [argPos] The argument positions of the new function.
      * @param {number} [ary] The arity cap of `func`.
      * @param {number} [arity] The arity of `func`.
      * @returns {Function} Returns the new wrapped function.
      */
     function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {
       var isAry = bitmask & WRAP_ARY_FLAG,
           isBind = bitmask & WRAP_BIND_FLAG,
           isBindKey = bitmask & WRAP_BIND_KEY_FLAG,
           isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),
           isFlip = bitmask & WRAP_FLIP_FLAG,
           Ctor = isBindKey ? undefined : createCtor(func);
 
       function wrapper() {
         var length = arguments.length,
             args = Array(length),
             index = length;
 
         while (index--) {
           args[index] = arguments[index];
         }
         if (isCurried) {
           var placeholder = getHolder(wrapper),
               holdersCount = countHolders(args, placeholder);
         }
         if (partials) {
           args = composeArgs(args, partials, holders, isCurried);
         }
         if (partialsRight) {
           args = composeArgsRight(args, partialsRight, holdersRight, isCurried);
         }
         length -= holdersCount;
         if (isCurried && length < arity) {
           var newHolders = replaceHolders(args, placeholder);
           return createRecurry(
             func, bitmask, createHybrid, wrapper.placeholder, thisArg,
             args, newHolders, argPos, ary, arity - length
           );
         }
         var thisBinding = isBind ? thisArg : this,
             fn = isBindKey ? thisBinding[func] : func;
 
         length = args.length;
         if (argPos) {
           args = reorder(args, argPos);
         } else if (isFlip && length > 1) {
           args.reverse();
         }
         if (isAry && ary < length) {
           args.length = ary;
         }
         if (this && this !== root && this instanceof wrapper) {
           fn = Ctor || createCtor(fn);
         }
         return fn.apply(thisBinding, args);
       }
       return wrapper;
     }
 
     /**
      * Creates a function like `_.invertBy`.
      *
      * @private
      * @param {Function} setter The function to set accumulator values.
      * @param {Function} toIteratee The function to resolve iteratees.
      * @returns {Function} Returns the new inverter function.
      */
     function createInverter(setter, toIteratee) {
       return function(object, iteratee) {
         return baseInverter(object, setter, toIteratee(iteratee), {});
       };
     }
 
     /**
      * Creates a function that performs a mathematical operation on two values.
      *
      * @private
      * @param {Function} operator The function to perform the operation.
      * @param {number} [defaultValue] The value used for `undefined` arguments.
      * @returns {Function} Returns the new mathematical operation function.
      */
     function createMathOperation(operator, defaultValue) {
       return function(value, other) {
         var result;
         if (value === undefined && other === undefined) {
           return defaultValue;
         }
         if (value !== undefined) {
           result = value;
         }
         if (other !== undefined) {
           if (result === undefined) {
             return other;
           }
           if (typeof value == 'string' || typeof other == 'string') {
             value = baseToString(value);
             other = baseToString(other);
           } else {
             value = baseToNumber(value);
             other = baseToNumber(other);
           }
           result = operator(value, other);
         }
         return result;
       };
     }
 
     /**
      * Creates a function like `_.over`.
      *
      * @private
      * @param {Function} arrayFunc The function to iterate over iteratees.
      * @returns {Function} Returns the new over function.
      */
     function createOver(arrayFunc) {
       return flatRest(function(iteratees) {
         iteratees = arrayMap(iteratees, baseUnary(getIteratee()));
         return baseRest(function(args) {
           var thisArg = this;
           return arrayFunc(iteratees, function(iteratee) {
             return apply(iteratee, thisArg, args);
           });
         });
       });
     }
 
     /**
      * Creates the padding for `string` based on `length`. The `chars` string
      * is truncated if the number of characters exceeds `length`.
      *
      * @private
      * @param {number} length The padding length.
      * @param {string} [chars=' '] The string used as padding.
      * @returns {string} Returns the padding for `string`.
      */
     function createPadding(length, chars) {
       chars = chars === undefined ? ' ' : baseToString(chars);
 
       var charsLength = chars.length;
       if (charsLength < 2) {
         return charsLength ? baseRepeat(chars, length) : chars;
       }
       var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));
       return hasUnicode(chars)
         ? castSlice(stringToArray(result), 0, length).join('')
         : result.slice(0, length);
     }
 
     /**
      * Creates a function that wraps `func` to invoke it with the `this` binding
      * of `thisArg` and `partials` prepended to the arguments it receives.
      *
      * @private
      * @param {Function} func The function to wrap.
      * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
      * @param {*} thisArg The `this` binding of `func`.
      * @param {Array} partials The arguments to prepend to those provided to
      *  the new function.
      * @returns {Function} Returns the new wrapped function.
      */
     function createPartial(func, bitmask, thisArg, partials) {
       var isBind = bitmask & WRAP_BIND_FLAG,
           Ctor = createCtor(func);
 
       function wrapper() {
         var argsIndex = -1,
             argsLength = arguments.length,
             leftIndex = -1,
             leftLength = partials.length,
             args = Array(leftLength + argsLength),
             fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
 
         while (++leftIndex < leftLength) {
           args[leftIndex] = partials[leftIndex];
         }
         while (argsLength--) {
           args[leftIndex++] = arguments[++argsIndex];
         }
         return apply(fn, isBind ? thisArg : this, args);
       }
       return wrapper;
     }
 
     /**
      * Creates a `_.range` or `_.rangeRight` function.
      *
      * @private
      * @param {boolean} [fromRight] Specify iterating from right to left.
      * @returns {Function} Returns the new range function.
      */
     function createRange(fromRight) {
       return function(start, end, step) {
         if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {
           end = step = undefined;
         }
         // Ensure the sign of `-0` is preserved.
         start = toFinite(start);
         if (end === undefined) {
           end = start;
           start = 0;
         } else {
           end = toFinite(end);
         }
         step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);
         return baseRange(start, end, step, fromRight);
       };
     }
 
     /**
      * Creates a function that performs a relational operation on two values.
      *
      * @private
      * @param {Function} operator The function to perform the operation.
      * @returns {Function} Returns the new relational operation function.
      */
     function createRelationalOperation(operator) {
       return function(value, other) {
         if (!(typeof value == 'string' && typeof other == 'string')) {
           value = toNumber(value);
           other = toNumber(other);
         }
         return operator(value, other);
       };
     }
 
     /**
      * Creates a function that wraps `func` to continue currying.
      *
      * @private
      * @param {Function} func The function to wrap.
      * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
      * @param {Function} wrapFunc The function to create the `func` wrapper.
      * @param {*} placeholder The placeholder value.
      * @param {*} [thisArg] The `this` binding of `func`.
      * @param {Array} [partials] The arguments to prepend to those provided to
      *  the new function.
      * @param {Array} [holders] The `partials` placeholder indexes.
      * @param {Array} [argPos] The argument positions of the new function.
      * @param {number} [ary] The arity cap of `func`.
      * @param {number} [arity] The arity of `func`.
      * @returns {Function} Returns the new wrapped function.
      */
     function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {
       var isCurry = bitmask & WRAP_CURRY_FLAG,
           newHolders = isCurry ? holders : undefined,
           newHoldersRight = isCurry ? undefined : holders,
           newPartials = isCurry ? partials : undefined,
           newPartialsRight = isCurry ? undefined : partials;
 
       bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);
       bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);
 
       if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {
         bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);
       }
       var newData = [
         func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,
         newHoldersRight, argPos, ary, arity
       ];
 
       var result = wrapFunc.apply(undefined, newData);
       if (isLaziable(func)) {
         setData(result, newData);
       }
       result.placeholder = placeholder;
       return setWrapToString(result, func, bitmask);
     }
 
     /**
      * Creates a function like `_.round`.
      *
      * @private
      * @param {string} methodName The name of the `Math` method to use when rounding.
      * @returns {Function} Returns the new round function.
      */
     function createRound(methodName) {
       var func = Math[methodName];
       return function(number, precision) {
         number = toNumber(number);
         precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);
         if (precision && nativeIsFinite(number)) {
           // Shift with exponential notation to avoid floating-point issues.
           // See [MDN](https://mdn.io/round#Examples) for more details.
           var pair = (toString(number) + 'e').split('e'),
               value = func(pair[0] + 'e' + (+pair[1] + precision));
 
           pair = (toString(value) + 'e').split('e');
           return +(pair[0] + 'e' + (+pair[1] - precision));
         }
         return func(number);
       };
     }
 
     /**
      * Creates a set object of `values`.
      *
      * @private
      * @param {Array} values The values to add to the set.
      * @returns {Object} Returns the new set.
      */
     var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {
       return new Set(values);
     };
 
     /**
      * Creates a `_.toPairs` or `_.toPairsIn` function.
      *
      * @private
      * @param {Function} keysFunc The function to get the keys of a given object.
      * @returns {Function} Returns the new pairs function.
      */
     function createToPairs(keysFunc) {
       return function(object) {
         var tag = getTag(object);
         if (tag == mapTag) {
           return mapToArray(object);
         }
         if (tag == setTag) {
           return setToPairs(object);
         }
         return baseToPairs(object, keysFunc(object));
       };
     }
 
     /**
      * Creates a function that either curries or invokes `func` with optional
      * `this` binding and partially applied arguments.
      *
      * @private
      * @param {Function|string} func The function or method name to wrap.
      * @param {number} bitmask The bitmask flags.
      *    1 - `_.bind`
      *    2 - `_.bindKey`
      *    4 - `_.curry` or `_.curryRight` of a bound function
      *    8 - `_.curry`
      *   16 - `_.curryRight`
      *   32 - `_.partial`
      *   64 - `_.partialRight`
      *  128 - `_.rearg`
      *  256 - `_.ary`
      *  512 - `_.flip`
      * @param {*} [thisArg] The `this` binding of `func`.
      * @param {Array} [partials] The arguments to be partially applied.
      * @param {Array} [holders] The `partials` placeholder indexes.
      * @param {Array} [argPos] The argument positions of the new function.
      * @param {number} [ary] The arity cap of `func`.
      * @param {number} [arity] The arity of `func`.
      * @returns {Function} Returns the new wrapped function.
      */
     function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
       var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;
       if (!isBindKey && typeof func != 'function') {
         throw new TypeError(FUNC_ERROR_TEXT);
       }
       var length = partials ? partials.length : 0;
       if (!length) {
         bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);
         partials = holders = undefined;
       }
       ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);
       arity = arity === undefined ? arity : toInteger(arity);
       length -= holders ? holders.length : 0;
 
       if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {
         var partialsRight = partials,
             holdersRight = holders;
 
         partials = holders = undefined;
       }
       var data = isBindKey ? undefined : getData(func);
 
       var newData = [
         func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,
         argPos, ary, arity
       ];
 
       if (data) {
         mergeData(newData, data);
       }
       func = newData[0];
       bitmask = newData[1];
       thisArg = newData[2];
       partials = newData[3];
       holders = newData[4];
       arity = newData[9] = newData[9] === undefined
         ? (isBindKey ? 0 : func.length)
         : nativeMax(newData[9] - length, 0);
 
       if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {
         bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);
       }
       if (!bitmask || bitmask == WRAP_BIND_FLAG) {
         var result = createBind(func, bitmask, thisArg);
       } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {
         result = createCurry(func, bitmask, arity);
       } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {
         result = createPartial(func, bitmask, thisArg, partials);
       } else {
         result = createHybrid.apply(undefined, newData);
       }
       var setter = data ? baseSetData : setData;
       return setWrapToString(setter(result, newData), func, bitmask);
     }
 
     /**
      * Used by `_.defaults` to customize its `_.assignIn` use to assign properties
      * of source objects to the destination object for all destination properties
      * that resolve to `undefined`.
      *
      * @private
      * @param {*} objValue The destination value.
      * @param {*} srcValue The source value.
      * @param {string} key The key of the property to assign.
      * @param {Object} object The parent object of `objValue`.
      * @returns {*} Returns the value to assign.
      */
     function customDefaultsAssignIn(objValue, srcValue, key, object) {
       if (objValue === undefined ||
           (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {
         return srcValue;
       }
       return objValue;
     }
 
     /**
      * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source
      * objects into destination objects that are passed thru.
      *
      * @private
      * @param {*} objValue The destination value.
      * @param {*} srcValue The source value.
      * @param {string} key The key of the property to merge.
      * @param {Object} object The parent object of `objValue`.
      * @param {Object} source The parent object of `srcValue`.
      * @param {Object} [stack] Tracks traversed source values and their merged
      *  counterparts.
      * @returns {*} Returns the value to assign.
      */
     function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {
       if (isObject(objValue) && isObject(srcValue)) {
         // Recursively merge objects and arrays (susceptible to call stack limits).
         stack.set(srcValue, objValue);
         baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);
         stack['delete'](srcValue);
       }
       return objValue;
     }
 
     /**
      * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain
      * objects.
      *
      * @private
      * @param {*} value The value to inspect.
      * @param {string} key The key of the property to inspect.
      * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.
      */
     function customOmitClone(value) {
       return isPlainObject(value) ? undefined : value;
     }
 
     /**
      * A specialized version of `baseIsEqualDeep` for arrays with support for
      * partial deep comparisons.
      *
      * @private
      * @param {Array} array The array to compare.
      * @param {Array} other The other array to compare.
      * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
      * @param {Function} customizer The function to customize comparisons.
      * @param {Function} equalFunc The function to determine equivalents of values.
      * @param {Object} stack Tracks traversed `array` and `other` objects.
      * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
      */
     function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
       var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
           arrLength = array.length,
           othLength = other.length;
 
       if (arrLength != othLength && !(isPartial && othLength > arrLength)) {
         return false;
       }
       // Check that cyclic values are equal.
       var arrStacked = stack.get(array);
       var othStacked = stack.get(other);
       if (arrStacked && othStacked) {
         return arrStacked == other && othStacked == array;
       }
       var index = -1,
           result = true,
           seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;
 
       stack.set(array, other);
       stack.set(other, array);
 
       // Ignore non-index properties.
       while (++index < arrLength) {
         var arrValue = array[index],
             othValue = other[index];
 
         if (customizer) {
           var compared = isPartial
             ? customizer(othValue, arrValue, index, other, array, stack)
             : customizer(arrValue, othValue, index, array, other, stack);
         }
         if (compared !== undefined) {
           if (compared) {
             continue;
           }
           result = false;
           break;
         }
         // Recursively compare arrays (susceptible to call stack limits).
         if (seen) {
           if (!arraySome(other, function(othValue, othIndex) {
                 if (!cacheHas(seen, othIndex) &&
                     (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
                   return seen.push(othIndex);
                 }
               })) {
             result = false;
             break;
           }
         } else if (!(
               arrValue === othValue ||
                 equalFunc(arrValue, othValue, bitmask, customizer, stack)
             )) {
           result = false;
           break;
         }
       }
       stack['delete'](array);
       stack['delete'](other);
       return result;
     }
 
     /**
      * A specialized version of `baseIsEqualDeep` for comparing objects of
      * the same `toStringTag`.
      *
      * **Note:** This function only supports comparing values with tags of
      * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
      *
      * @private
      * @param {Object} object The object to compare.
      * @param {Object} other The other object to compare.
      * @param {string} tag The `toStringTag` of the objects to compare.
      * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
      * @param {Function} customizer The function to customize comparisons.
      * @param {Function} equalFunc The function to determine equivalents of values.
      * @param {Object} stack Tracks traversed `object` and `other` objects.
      * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
      */
     function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
       switch (tag) {
         case dataViewTag:
           if ((object.byteLength != other.byteLength) ||
               (object.byteOffset != other.byteOffset)) {
             return false;
           }
           object = object.buffer;
           other = other.buffer;
 
         case arrayBufferTag:
           if ((object.byteLength != other.byteLength) ||
               !equalFunc(new Uint8Array(object), new Uint8Array(other))) {
             return false;
           }
           return true;
 
         case boolTag:
         case dateTag:
         case numberTag:
           // Coerce booleans to `1` or `0` and dates to milliseconds.
           // Invalid dates are coerced to `NaN`.
           return eq(+object, +other);
 
         case errorTag:
           return object.name == other.name && object.message == other.message;
 
         case regexpTag:
         case stringTag:
           // Coerce regexes to strings and treat strings, primitives and objects,
           // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring
           // for more details.
           return object == (other + '');
 
         case mapTag:
           var convert = mapToArray;
 
         case setTag:
           var isPartial = bitmask & COMPARE_PARTIAL_FLAG;
           convert || (convert = setToArray);
 
           if (object.size != other.size && !isPartial) {
             return false;
           }
           // Assume cyclic values are equal.
           var stacked = stack.get(object);
           if (stacked) {
             return stacked == other;
           }
           bitmask |= COMPARE_UNORDERED_FLAG;
 
           // Recursively compare objects (susceptible to call stack limits).
           stack.set(object, other);
           var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);
           stack['delete'](object);
           return result;
 
         case symbolTag:
           if (symbolValueOf) {
             return symbolValueOf.call(object) == symbolValueOf.call(other);
           }
       }
       return false;
     }
 
     /**
      * A specialized version of `baseIsEqualDeep` for objects with support for
      * partial deep comparisons.
      *
      * @private
      * @param {Object} object The object to compare.
      * @param {Object} other The other object to compare.
      * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
      * @param {Function} customizer The function to customize comparisons.
      * @param {Function} equalFunc The function to determine equivalents of values.
      * @param {Object} stack Tracks traversed `object` and `other` objects.
      * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
      */
     function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
       var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
           objProps = getAllKeys(object),
           objLength = objProps.length,
           othProps = getAllKeys(other),
           othLength = othProps.length;
 
       if (objLength != othLength && !isPartial) {
         return false;
       }
       var index = objLength;
       while (index--) {
         var key = objProps[index];
         if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {
           return false;
         }
       }
       // Check that cyclic values are equal.
       var objStacked = stack.get(object);
       var othStacked = stack.get(other);
       if (objStacked && othStacked) {
         return objStacked == other && othStacked == object;
       }
       var result = true;
       stack.set(object, other);
       stack.set(other, object);
 
       var skipCtor = isPartial;
       while (++index < objLength) {
         key = objProps[index];
         var objValue = object[key],
             othValue = other[key];
 
         if (customizer) {
           var compared = isPartial
             ? customizer(othValue, objValue, key, other, object, stack)
             : customizer(objValue, othValue, key, object, other, stack);
         }
         // Recursively compare objects (susceptible to call stack limits).
         if (!(compared === undefined
               ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))
               : compared
             )) {
           result = false;
           break;
         }
         skipCtor || (skipCtor = key == 'constructor');
       }
       if (result && !skipCtor) {
         var objCtor = object.constructor,
             othCtor = other.constructor;
 
         // Non `Object` object instances with different constructors are not equal.
         if (objCtor != othCtor &&
             ('constructor' in object && 'constructor' in other) &&
             !(typeof objCtor == 'function' && objCtor instanceof objCtor &&
               typeof othCtor == 'function' && othCtor instanceof othCtor)) {
           result = false;
         }
       }
       stack['delete'](object);
       stack['delete'](other);
       return result;
     }
 
     /**
      * A specialized version of `baseRest` which flattens the rest array.
      *
      * @private
      * @param {Function} func The function to apply a rest parameter to.
      * @returns {Function} Returns the new function.
      */
     function flatRest(func) {
       return setToString(overRest(func, undefined, flatten), func + '');
     }
 
     /**
      * Creates an array of own enumerable property names and symbols of `object`.
      *
      * @private
      * @param {Object} object The object to query.
      * @returns {Array} Returns the array of property names and symbols.
      */
     function getAllKeys(object) {
       return baseGetAllKeys(object, keys, getSymbols);
     }
 
     /**
      * Creates an array of own and inherited enumerable property names and
      * symbols of `object`.
      *
      * @private
      * @param {Object} object The object to query.
      * @returns {Array} Returns the array of property names and symbols.
      */
     function getAllKeysIn(object) {
       return baseGetAllKeys(object, keysIn, getSymbolsIn);
     }
 
     /**
      * Gets metadata for `func`.
      *
      * @private
      * @param {Function} func The function to query.
      * @returns {*} Returns the metadata for `func`.
      */
     var getData = !metaMap ? noop : function(func) {
       return metaMap.get(func);
     };
 
     /**
      * Gets the name of `func`.
      *
      * @private
      * @param {Function} func The function to query.
      * @returns {string} Returns the function name.
      */
     function getFuncName(func) {
       var result = (func.name + ''),
           array = realNames[result],
           length = hasOwnProperty.call(realNames, result) ? array.length : 0;
 
       while (length--) {
         var data = array[length],
             otherFunc = data.func;
         if (otherFunc == null || otherFunc == func) {
           return data.name;
         }
       }
       return result;
     }
 
     /**
      * Gets the argument placeholder value for `func`.
      *
      * @private
      * @param {Function} func The function to inspect.
      * @returns {*} Returns the placeholder value.
      */
     function getHolder(func) {
       var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;
       return object.placeholder;
     }
 
     /**
      * Gets the appropriate "iteratee" function. If `_.iteratee` is customized,
      * this function returns the custom method, otherwise it returns `baseIteratee`.
      * If arguments are provided, the chosen function is invoked with them and
      * its result is returned.
      *
      * @private
      * @param {*} [value] The value to convert to an iteratee.
      * @param {number} [arity] The arity of the created iteratee.
      * @returns {Function} Returns the chosen function or its result.
      */
     function getIteratee() {
       var result = lodash.iteratee || iteratee;
       result = result === iteratee ? baseIteratee : result;
       return arguments.length ? result(arguments[0], arguments[1]) : result;
     }
 
     /**
      * Gets the data for `map`.
      *
      * @private
      * @param {Object} map The map to query.
      * @param {string} key The reference key.
      * @returns {*} Returns the map data.
      */
     function getMapData(map, key) {
       var data = map.__data__;
       return isKeyable(key)
         ? data[typeof key == 'string' ? 'string' : 'hash']
         : data.map;
     }
 
     /**
      * Gets the property names, values, and compare flags of `object`.
      *
      * @private
      * @param {Object} object The object to query.
      * @returns {Array} Returns the match data of `object`.
      */
     function getMatchData(object) {
       var result = keys(object),
           length = result.length;
 
       while (length--) {
         var key = result[length],
             value = object[key];
 
         result[length] = [key, value, isStrictComparable(value)];
       }
       return result;
     }
 
     /**
      * Gets the native function at `key` of `object`.
      *
      * @private
      * @param {Object} object The object to query.
      * @param {string} key The key of the method to get.
      * @returns {*} Returns the function if it's native, else `undefined`.
      */
     function getNative(object, key) {
       var value = getValue(object, key);
       return baseIsNative(value) ? value : undefined;
     }
 
     /**
      * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
      *
      * @private
      * @param {*} value The value to query.
      * @returns {string} Returns the raw `toStringTag`.
      */
     function getRawTag(value) {
       var isOwn = hasOwnProperty.call(value, symToStringTag),
           tag = value[symToStringTag];
 
       try {
         value[symToStringTag] = undefined;
         var unmasked = true;
       } catch (e) {}
 
       var result = nativeObjectToString.call(value);
       if (unmasked) {
         if (isOwn) {
           value[symToStringTag] = tag;
         } else {
           delete value[symToStringTag];
         }
       }
       return result;
     }
 
     /**
      * Creates an array of the own enumerable symbols of `object`.
      *
      * @private
      * @param {Object} object The object to query.
      * @returns {Array} Returns the array of symbols.
      */
     var getSymbols = !nativeGetSymbols ? stubArray : function(object) {
       if (object == null) {
         return [];
       }
       object = Object(object);
       return arrayFilter(nativeGetSymbols(object), function(symbol) {
         return propertyIsEnumerable.call(object, symbol);
       });
     };
 
     /**
      * Creates an array of the own and inherited enumerable symbols of `object`.
      *
      * @private
      * @param {Object} object The object to query.
      * @returns {Array} Returns the array of symbols.
      */
     var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {
       var result = [];
       while (object) {
         arrayPush(result, getSymbols(object));
         object = getPrototype(object);
       }
       return result;
     };
 
     /**
      * Gets the `toStringTag` of `value`.
      *
      * @private
      * @param {*} value The value to query.
      * @returns {string} Returns the `toStringTag`.
      */
     var getTag = baseGetTag;
 
     // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.
     if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
         (Map && getTag(new Map) != mapTag) ||
         (Promise && getTag(Promise.resolve()) != promiseTag) ||
         (Set && getTag(new Set) != setTag) ||
         (WeakMap && getTag(new WeakMap) != weakMapTag)) {
       getTag = function(value) {
         var result = baseGetTag(value),
             Ctor = result == objectTag ? value.constructor : undefined,
             ctorString = Ctor ? toSource(Ctor) : '';
 
         if (ctorString) {
           switch (ctorString) {
             case dataViewCtorString: return dataViewTag;
             case mapCtorString: return mapTag;
             case promiseCtorString: return promiseTag;
             case setCtorString: return setTag;
             case weakMapCtorString: return weakMapTag;
           }
         }
         return result;
       };
     }
 
     /**
      * Gets the view, applying any `transforms` to the `start` and `end` positions.
      *
      * @private
      * @param {number} start The start of the view.
      * @param {number} end The end of the view.
      * @param {Array} transforms The transformations to apply to the view.
      * @returns {Object} Returns an object containing the `start` and `end`
      *  positions of the view.
      */
     function getView(start, end, transforms) {
       var index = -1,
           length = transforms.length;
 
       while (++index < length) {
         var data = transforms[index],
             size = data.size;
 
         switch (data.type) {
           case 'drop':      start += size; break;
           case 'dropRight': end -= size; break;
           case 'take':      end = nativeMin(end, start + size); break;
           case 'takeRight': start = nativeMax(start, end - size); break;
         }
       }
       return { 'start': start, 'end': end };
     }
 
     /**
      * Extracts wrapper details from the `source` body comment.
      *
      * @private
      * @param {string} source The source to inspect.
      * @returns {Array} Returns the wrapper details.
      */
     function getWrapDetails(source) {
       var match = source.match(reWrapDetails);
       return match ? match[1].split(reSplitDetails) : [];
     }
 
     /**
      * Checks if `path` exists on `object`.
      *
      * @private
      * @param {Object} object The object to query.
      * @param {Array|string} path The path to check.
      * @param {Function} hasFunc The function to check properties.
      * @returns {boolean} Returns `true` if `path` exists, else `false`.
      */
     function hasPath(object, path, hasFunc) {
       path = castPath(path, object);
 
       var index = -1,
           length = path.length,
           result = false;
 
       while (++index < length) {
         var key = toKey(path[index]);
         if (!(result = object != null && hasFunc(object, key))) {
           break;
         }
         object = object[key];
       }
       if (result || ++index != length) {
         return result;
       }
       length = object == null ? 0 : object.length;
       return !!length && isLength(length) && isIndex(key, length) &&
         (isArray(object) || isArguments(object));
     }
 
     /**
      * Initializes an array clone.
      *
      * @private
      * @param {Array} array The array to clone.
      * @returns {Array} Returns the initialized clone.
      */
     function initCloneArray(array) {
       var length = array.length,
           result = new array.constructor(length);
 
       // Add properties assigned by `RegExp#exec`.
       if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
         result.index = array.index;
         result.input = array.input;
       }
       return result;
     }
 
     /**
      * Initializes an object clone.
      *
      * @private
      * @param {Object} object The object to clone.
      * @returns {Object} Returns the initialized clone.
      */
     function initCloneObject(object) {
       return (typeof object.constructor == 'function' && !isPrototype(object))
         ? baseCreate(getPrototype(object))
         : {};
     }
 
     /**
      * Initializes an object clone based on its `toStringTag`.
      *
      * **Note:** This function only supports cloning values with tags of
      * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.
      *
      * @private
      * @param {Object} object The object to clone.
      * @param {string} tag The `toStringTag` of the object to clone.
      * @param {boolean} [isDeep] Specify a deep clone.
      * @returns {Object} Returns the initialized clone.
      */
     function initCloneByTag(object, tag, isDeep) {
       var Ctor = object.constructor;
       switch (tag) {
         case arrayBufferTag:
           return cloneArrayBuffer(object);
 
         case boolTag:
         case dateTag:
           return new Ctor(+object);
 
         case dataViewTag:
           return cloneDataView(object, isDeep);
 
         case float32Tag: case float64Tag:
         case int8Tag: case int16Tag: case int32Tag:
         case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
           return cloneTypedArray(object, isDeep);
 
         case mapTag:
           return new Ctor;
 
         case numberTag:
         case stringTag:
           return new Ctor(object);
 
         case regexpTag:
           return cloneRegExp(object);
 
         case setTag:
           return new Ctor;
 
         case symbolTag:
           return cloneSymbol(object);
       }
     }
 
     /**
      * Inserts wrapper `details` in a comment at the top of the `source` body.
      *
      * @private
      * @param {string} source The source to modify.
      * @returns {Array} details The details to insert.
      * @returns {string} Returns the modified source.
      */
     function insertWrapDetails(source, details) {
       var length = details.length;
       if (!length) {
         return source;
       }
       var lastIndex = length - 1;
       details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];
       details = details.join(length > 2 ? ', ' : ' ');
       return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n');
     }
 
     /**
      * Checks if `value` is a flattenable `arguments` object or array.
      *
      * @private
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.
      */
     function isFlattenable(value) {
       return isArray(value) || isArguments(value) ||
         !!(spreadableSymbol && value && value[spreadableSymbol]);
     }
 
     /**
      * Checks if `value` is a valid array-like index.
      *
      * @private
      * @param {*} value The value to check.
      * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
      * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
      */
     function isIndex(value, length) {
       var type = typeof value;
       length = length == null ? MAX_SAFE_INTEGER : length;
 
       return !!length &&
         (type == 'number' ||
           (type != 'symbol' && reIsUint.test(value))) &&
             (value > -1 && value % 1 == 0 && value < length);
     }
 
     /**
      * Checks if the given arguments are from an iteratee call.
      *
      * @private
      * @param {*} value The potential iteratee value argument.
      * @param {*} index The potential iteratee index or key argument.
      * @param {*} object The potential iteratee object argument.
      * @returns {boolean} Returns `true` if the arguments are from an iteratee call,
      *  else `false`.
      */
     function isIterateeCall(value, index, object) {
       if (!isObject(object)) {
         return false;
       }
       var type = typeof index;
       if (type == 'number'
             ? (isArrayLike(object) && isIndex(index, object.length))
             : (type == 'string' && index in object)
           ) {
         return eq(object[index], value);
       }
       return false;
     }
 
     /**
      * Checks if `value` is a property name and not a property path.
      *
      * @private
      * @param {*} value The value to check.
      * @param {Object} [object] The object to query keys on.
      * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
      */
     function isKey(value, object) {
       if (isArray(value)) {
         return false;
       }
       var type = typeof value;
       if (type == 'number' || type == 'symbol' || type == 'boolean' ||
           value == null || isSymbol(value)) {
         return true;
       }
       return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
         (object != null && value in Object(object));
     }
 
     /**
      * Checks if `value` is suitable for use as unique object key.
      *
      * @private
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
      */
     function isKeyable(value) {
       var type = typeof value;
       return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
         ? (value !== '__proto__')
         : (value === null);
     }
 
     /**
      * Checks if `func` has a lazy counterpart.
      *
      * @private
      * @param {Function} func The function to check.
      * @returns {boolean} Returns `true` if `func` has a lazy counterpart,
      *  else `false`.
      */
     function isLaziable(func) {
       var funcName = getFuncName(func),
           other = lodash[funcName];
 
       if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {
         return false;
       }
       if (func === other) {
         return true;
       }
       var data = getData(other);
       return !!data && func === data[0];
     }
 
     /**
      * Checks if `func` has its source masked.
      *
      * @private
      * @param {Function} func The function to check.
      * @returns {boolean} Returns `true` if `func` is masked, else `false`.
      */
     function isMasked(func) {
       return !!maskSrcKey && (maskSrcKey in func);
     }
 
     /**
      * Checks if `func` is capable of being masked.
      *
      * @private
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `func` is maskable, else `false`.
      */
     var isMaskable = coreJsData ? isFunction : stubFalse;
 
     /**
      * Checks if `value` is likely a prototype object.
      *
      * @private
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
      */
     function isPrototype(value) {
       var Ctor = value && value.constructor,
           proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;
 
       return value === proto;
     }
 
     /**
      * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
      *
      * @private
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` if suitable for strict
      *  equality comparisons, else `false`.
      */
     function isStrictComparable(value) {
       return value === value && !isObject(value);
     }
 
     /**
      * A specialized version of `matchesProperty` for source values suitable
      * for strict equality comparisons, i.e. `===`.
      *
      * @private
      * @param {string} key The key of the property to get.
      * @param {*} srcValue The value to match.
      * @returns {Function} Returns the new spec function.
      */
     function matchesStrictComparable(key, srcValue) {
       return function(object) {
         if (object == null) {
           return false;
         }
         return object[key] === srcValue &&
           (srcValue !== undefined || (key in Object(object)));
       };
     }
 
     /**
      * A specialized version of `_.memoize` which clears the memoized function's
      * cache when it exceeds `MAX_MEMOIZE_SIZE`.
      *
      * @private
      * @param {Function} func The function to have its output memoized.
      * @returns {Function} Returns the new memoized function.
      */
     function memoizeCapped(func) {
       var result = memoize(func, function(key) {
         if (cache.size === MAX_MEMOIZE_SIZE) {
           cache.clear();
         }
         return key;
       });
 
       var cache = result.cache;
       return result;
     }
 
     /**
      * Merges the function metadata of `source` into `data`.
      *
      * Merging metadata reduces the number of wrappers used to invoke a function.
      * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`
      * may be applied regardless of execution order. Methods like `_.ary` and
      * `_.rearg` modify function arguments, making the order in which they are
      * executed important, preventing the merging of metadata. However, we make
      * an exception for a safe combined case where curried functions have `_.ary`
      * and or `_.rearg` applied.
      *
      * @private
      * @param {Array} data The destination metadata.
      * @param {Array} source The source metadata.
      * @returns {Array} Returns `data`.
      */
     function mergeData(data, source) {
       var bitmask = data[1],
           srcBitmask = source[1],
           newBitmask = bitmask | srcBitmask,
           isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);
 
       var isCombo =
         ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||
         ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||
         ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));
 
       // Exit early if metadata can't be merged.
       if (!(isCommon || isCombo)) {
         return data;
       }
       // Use source `thisArg` if available.
       if (srcBitmask & WRAP_BIND_FLAG) {
         data[2] = source[2];
         // Set when currying a bound function.
         newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;
       }
       // Compose partial arguments.
       var value = source[3];
       if (value) {
         var partials = data[3];
         data[3] = partials ? composeArgs(partials, value, source[4]) : value;
         data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];
       }
       // Compose partial right arguments.
       value = source[5];
       if (value) {
         partials = data[5];
         data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;
         data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];
       }
       // Use source `argPos` if available.
       value = source[7];
       if (value) {
         data[7] = value;
       }
       // Use source `ary` if it's smaller.
       if (srcBitmask & WRAP_ARY_FLAG) {
         data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);
       }
       // Use source `arity` if one is not provided.
       if (data[9] == null) {
         data[9] = source[9];
       }
       // Use source `func` and merge bitmasks.
       data[0] = source[0];
       data[1] = newBitmask;
 
       return data;
     }
 
     /**
      * This function is like
      * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
      * except that it includes inherited enumerable properties.
      *
      * @private
      * @param {Object} object The object to query.
      * @returns {Array} Returns the array of property names.
      */
     function nativeKeysIn(object) {
       var result = [];
       if (object != null) {
         for (var key in Object(object)) {
           result.push(key);
         }
       }
       return result;
     }
 
     /**
      * Converts `value` to a string using `Object.prototype.toString`.
      *
      * @private
      * @param {*} value The value to convert.
      * @returns {string} Returns the converted string.
      */
     function objectToString(value) {
       return nativeObjectToString.call(value);
     }
 
     /**
      * A specialized version of `baseRest` which transforms the rest array.
      *
      * @private
      * @param {Function} func The function to apply a rest parameter to.
      * @param {number} [start=func.length-1] The start position of the rest parameter.
      * @param {Function} transform The rest array transform.
      * @returns {Function} Returns the new function.
      */
     function overRest(func, start, transform) {
       start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
       return function() {
         var args = arguments,
             index = -1,
             length = nativeMax(args.length - start, 0),
             array = Array(length);
 
         while (++index < length) {
           array[index] = args[start + index];
         }
         index = -1;
         var otherArgs = Array(start + 1);
         while (++index < start) {
           otherArgs[index] = args[index];
         }
         otherArgs[start] = transform(array);
         return apply(func, this, otherArgs);
       };
     }
 
     /**
      * Gets the parent value at `path` of `object`.
      *
      * @private
      * @param {Object} object The object to query.
      * @param {Array} path The path to get the parent value of.
      * @returns {*} Returns the parent value.
      */
     function parent(object, path) {
       return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));
     }
 
     /**
      * Reorder `array` according to the specified indexes where the element at
      * the first index is assigned as the first element, the element at
      * the second index is assigned as the second element, and so on.
      *
      * @private
      * @param {Array} array The array to reorder.
      * @param {Array} indexes The arranged array indexes.
      * @returns {Array} Returns `array`.
      */
     function reorder(array, indexes) {
       var arrLength = array.length,
           length = nativeMin(indexes.length, arrLength),
           oldArray = copyArray(array);
 
       while (length--) {
         var index = indexes[length];
         array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;
       }
       return array;
     }
 
     /**
      * Gets the value at `key`, unless `key` is "__proto__" or "constructor".
      *
      * @private
      * @param {Object} object The object to query.
      * @param {string} key The key of the property to get.
      * @returns {*} Returns the property value.
      */
     function safeGet(object, key) {
       if (key === 'constructor' && typeof object[key] === 'function') {
         return;
       }
 
       if (key == '__proto__') {
         return;
       }
 
       return object[key];
     }
 
     /**
      * Sets metadata for `func`.
      *
      * **Note:** If this function becomes hot, i.e. is invoked a lot in a short
      * period of time, it will trip its breaker and transition to an identity
      * function to avoid garbage collection pauses in V8. See
      * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)
      * for more details.
      *
      * @private
      * @param {Function} func The function to associate metadata with.
      * @param {*} data The metadata.
      * @returns {Function} Returns `func`.
      */
     var setData = shortOut(baseSetData);
 
     /**
      * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).
      *
      * @private
      * @param {Function} func The function to delay.
      * @param {number} wait The number of milliseconds to delay invocation.
      * @returns {number|Object} Returns the timer id or timeout object.
      */
     var setTimeout = ctxSetTimeout || function(func, wait) {
       return root.setTimeout(func, wait);
     };
 
     /**
      * Sets the `toString` method of `func` to return `string`.
      *
      * @private
      * @param {Function} func The function to modify.
      * @param {Function} string The `toString` result.
      * @returns {Function} Returns `func`.
      */
     var setToString = shortOut(baseSetToString);
 
     /**
      * Sets the `toString` method of `wrapper` to mimic the source of `reference`
      * with wrapper details in a comment at the top of the source body.
      *
      * @private
      * @param {Function} wrapper The function to modify.
      * @param {Function} reference The reference function.
      * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
      * @returns {Function} Returns `wrapper`.
      */
     function setWrapToString(wrapper, reference, bitmask) {
       var source = (reference + '');
       return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));
     }
 
     /**
      * Creates a function that'll short out and invoke `identity` instead
      * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`
      * milliseconds.
      *
      * @private
      * @param {Function} func The function to restrict.
      * @returns {Function} Returns the new shortable function.
      */
     function shortOut(func) {
       var count = 0,
           lastCalled = 0;
 
       return function() {
         var stamp = nativeNow(),
             remaining = HOT_SPAN - (stamp - lastCalled);
 
         lastCalled = stamp;
         if (remaining > 0) {
           if (++count >= HOT_COUNT) {
             return arguments[0];
           }
         } else {
           count = 0;
         }
         return func.apply(undefined, arguments);
       };
     }
 
     /**
      * A specialized version of `_.shuffle` which mutates and sets the size of `array`.
      *
      * @private
      * @param {Array} array The array to shuffle.
      * @param {number} [size=array.length] The size of `array`.
      * @returns {Array} Returns `array`.
      */
     function shuffleSelf(array, size) {
       var index = -1,
           length = array.length,
           lastIndex = length - 1;
 
       size = size === undefined ? length : size;
       while (++index < size) {
         var rand = baseRandom(index, lastIndex),
             value = array[rand];
 
         array[rand] = array[index];
         array[index] = value;
       }
       array.length = size;
       return array;
     }
 
     /**
      * Converts `string` to a property path array.
      *
      * @private
      * @param {string} string The string to convert.
      * @returns {Array} Returns the property path array.
      */
     var stringToPath = memoizeCapped(function(string) {
       var result = [];
       if (string.charCodeAt(0) === 46 /* . */) {
         result.push('');
       }
       string.replace(rePropName, function(match, number, quote, subString) {
         result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));
       });
       return result;
     });
 
     /**
      * Converts `value` to a string key if it's not a string or symbol.
      *
      * @private
      * @param {*} value The value to inspect.
      * @returns {string|symbol} Returns the key.
      */
     function toKey(value) {
       if (typeof value == 'string' || isSymbol(value)) {
         return value;
       }
       var result = (value + '');
       return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
     }
 
     /**
      * Converts `func` to its source code.
      *
      * @private
      * @param {Function} func The function to convert.
      * @returns {string} Returns the source code.
      */
     function toSource(func) {
       if (func != null) {
         try {
           return funcToString.call(func);
         } catch (e) {}
         try {
           return (func + '');
         } catch (e) {}
       }
       return '';
     }
 
     /**
      * Updates wrapper `details` based on `bitmask` flags.
      *
      * @private
      * @returns {Array} details The details to modify.
      * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
      * @returns {Array} Returns `details`.
      */
     function updateWrapDetails(details, bitmask) {
       arrayEach(wrapFlags, function(pair) {
         var value = '_.' + pair[0];
         if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {
           details.push(value);
         }
       });
       return details.sort();
     }
 
     /**
      * Creates a clone of `wrapper`.
      *
      * @private
      * @param {Object} wrapper The wrapper to clone.
      * @returns {Object} Returns the cloned wrapper.
      */
     function wrapperClone(wrapper) {
       if (wrapper instanceof LazyWrapper) {
         return wrapper.clone();
       }
       var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);
       result.__actions__ = copyArray(wrapper.__actions__);
       result.__index__  = wrapper.__index__;
       result.__values__ = wrapper.__values__;
       return result;
     }
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Creates an array of elements split into groups the length of `size`.
      * If `array` can't be split evenly, the final chunk will be the remaining
      * elements.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Array
      * @param {Array} array The array to process.
      * @param {number} [size=1] The length of each chunk
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {Array} Returns the new array of chunks.
      * @example
      *
      * _.chunk(['a', 'b', 'c', 'd'], 2);
      * // => [['a', 'b'], ['c', 'd']]
      *
      * _.chunk(['a', 'b', 'c', 'd'], 3);
      * // => [['a', 'b', 'c'], ['d']]
      */
     function chunk(array, size, guard) {
       if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {
         size = 1;
       } else {
         size = nativeMax(toInteger(size), 0);
       }
       var length = array == null ? 0 : array.length;
       if (!length || size < 1) {
         return [];
       }
       var index = 0,
           resIndex = 0,
           result = Array(nativeCeil(length / size));
 
       while (index < length) {
         result[resIndex++] = baseSlice(array, index, (index += size));
       }
       return result;
     }
 
     /**
      * Creates an array with all falsey values removed. The values `false`, `null`,
      * `0`, `""`, `undefined`, and `NaN` are falsey.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Array
      * @param {Array} array The array to compact.
      * @returns {Array} Returns the new array of filtered values.
      * @example
      *
      * _.compact([0, 1, false, 2, '', 3]);
      * // => [1, 2, 3]
      */
     function compact(array) {
       var index = -1,
           length = array == null ? 0 : array.length,
           resIndex = 0,
           result = [];
 
       while (++index < length) {
         var value = array[index];
         if (value) {
           result[resIndex++] = value;
         }
       }
       return result;
     }
 
     /**
      * Creates a new array concatenating `array` with any additional arrays
      * and/or values.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} array The array to concatenate.
      * @param {...*} [values] The values to concatenate.
      * @returns {Array} Returns the new concatenated array.
      * @example
      *
      * var array = [1];
      * var other = _.concat(array, 2, [3], [[4]]);
      *
      * console.log(other);
      * // => [1, 2, 3, [4]]
      *
      * console.log(array);
      * // => [1]
      */
     function concat() {
       var length = arguments.length;
       if (!length) {
         return [];
       }
       var args = Array(length - 1),
           array = arguments[0],
           index = length;
 
       while (index--) {
         args[index - 1] = arguments[index];
       }
       return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));
     }
 
     /**
      * Creates an array of `array` values not included in the other given arrays
      * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
      * for equality comparisons. The order and references of result values are
      * determined by the first array.
      *
      * **Note:** Unlike `_.pullAll`, this method returns a new array.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Array
      * @param {Array} array The array to inspect.
      * @param {...Array} [values] The values to exclude.
      * @returns {Array} Returns the new array of filtered values.
      * @see _.without, _.xor
      * @example
      *
      * _.difference([2, 1], [2, 3]);
      * // => [1]
      */
     var difference = baseRest(function(array, values) {
       return isArrayLikeObject(array)
         ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))
         : [];
     });
 
     /**
      * This method is like `_.difference` except that it accepts `iteratee` which
      * is invoked for each element of `array` and `values` to generate the criterion
      * by which they're compared. The order and references of result values are
      * determined by the first array. The iteratee is invoked with one argument:
      * (value).
      *
      * **Note:** Unlike `_.pullAllBy`, this method returns a new array.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} array The array to inspect.
      * @param {...Array} [values] The values to exclude.
      * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
      * @returns {Array} Returns the new array of filtered values.
      * @example
      *
      * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);
      * // => [1.2]
      *
      * // The `_.property` iteratee shorthand.
      * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');
      * // => [{ 'x': 2 }]
      */
     var differenceBy = baseRest(function(array, values) {
       var iteratee = last(values);
       if (isArrayLikeObject(iteratee)) {
         iteratee = undefined;
       }
       return isArrayLikeObject(array)
         ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))
         : [];
     });
 
     /**
      * This method is like `_.difference` except that it accepts `comparator`
      * which is invoked to compare elements of `array` to `values`. The order and
      * references of result values are determined by the first array. The comparator
      * is invoked with two arguments: (arrVal, othVal).
      *
      * **Note:** Unlike `_.pullAllWith`, this method returns a new array.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} array The array to inspect.
      * @param {...Array} [values] The values to exclude.
      * @param {Function} [comparator] The comparator invoked per element.
      * @returns {Array} Returns the new array of filtered values.
      * @example
      *
      * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
      *
      * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);
      * // => [{ 'x': 2, 'y': 1 }]
      */
     var differenceWith = baseRest(function(array, values) {
       var comparator = last(values);
       if (isArrayLikeObject(comparator)) {
         comparator = undefined;
       }
       return isArrayLikeObject(array)
         ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)
         : [];
     });
 
     /**
      * Creates a slice of `array` with `n` elements dropped from the beginning.
      *
      * @static
      * @memberOf _
      * @since 0.5.0
      * @category Array
      * @param {Array} array The array to query.
      * @param {number} [n=1] The number of elements to drop.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {Array} Returns the slice of `array`.
      * @example
      *
      * _.drop([1, 2, 3]);
      * // => [2, 3]
      *
      * _.drop([1, 2, 3], 2);
      * // => [3]
      *
      * _.drop([1, 2, 3], 5);
      * // => []
      *
      * _.drop([1, 2, 3], 0);
      * // => [1, 2, 3]
      */
     function drop(array, n, guard) {
       var length = array == null ? 0 : array.length;
       if (!length) {
         return [];
       }
       n = (guard || n === undefined) ? 1 : toInteger(n);
       return baseSlice(array, n < 0 ? 0 : n, length);
     }
 
     /**
      * Creates a slice of `array` with `n` elements dropped from the end.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Array
      * @param {Array} array The array to query.
      * @param {number} [n=1] The number of elements to drop.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {Array} Returns the slice of `array`.
      * @example
      *
      * _.dropRight([1, 2, 3]);
      * // => [1, 2]
      *
      * _.dropRight([1, 2, 3], 2);
      * // => [1]
      *
      * _.dropRight([1, 2, 3], 5);
      * // => []
      *
      * _.dropRight([1, 2, 3], 0);
      * // => [1, 2, 3]
      */
     function dropRight(array, n, guard) {
       var length = array == null ? 0 : array.length;
       if (!length) {
         return [];
       }
       n = (guard || n === undefined) ? 1 : toInteger(n);
       n = length - n;
       return baseSlice(array, 0, n < 0 ? 0 : n);
     }
 
     /**
      * Creates a slice of `array` excluding elements dropped from the end.
      * Elements are dropped until `predicate` returns falsey. The predicate is
      * invoked with three arguments: (value, index, array).
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Array
      * @param {Array} array The array to query.
      * @param {Function} [predicate=_.identity] The function invoked per iteration.
      * @returns {Array} Returns the slice of `array`.
      * @example
      *
      * var users = [
      *   { 'user': 'barney',  'active': true },
      *   { 'user': 'fred',    'active': false },
      *   { 'user': 'pebbles', 'active': false }
      * ];
      *
      * _.dropRightWhile(users, function(o) { return !o.active; });
      * // => objects for ['barney']
      *
      * // The `_.matches` iteratee shorthand.
      * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });
      * // => objects for ['barney', 'fred']
      *
      * // The `_.matchesProperty` iteratee shorthand.
      * _.dropRightWhile(users, ['active', false]);
      * // => objects for ['barney']
      *
      * // The `_.property` iteratee shorthand.
      * _.dropRightWhile(users, 'active');
      * // => objects for ['barney', 'fred', 'pebbles']
      */
     function dropRightWhile(array, predicate) {
       return (array && array.length)
         ? baseWhile(array, getIteratee(predicate, 3), true, true)
         : [];
     }
 
     /**
      * Creates a slice of `array` excluding elements dropped from the beginning.
      * Elements are dropped until `predicate` returns falsey. The predicate is
      * invoked with three arguments: (value, index, array).
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Array
      * @param {Array} array The array to query.
      * @param {Function} [predicate=_.identity] The function invoked per iteration.
      * @returns {Array} Returns the slice of `array`.
      * @example
      *
      * var users = [
      *   { 'user': 'barney',  'active': false },
      *   { 'user': 'fred',    'active': false },
      *   { 'user': 'pebbles', 'active': true }
      * ];
      *
      * _.dropWhile(users, function(o) { return !o.active; });
      * // => objects for ['pebbles']
      *
      * // The `_.matches` iteratee shorthand.
      * _.dropWhile(users, { 'user': 'barney', 'active': false });
      * // => objects for ['fred', 'pebbles']
      *
      * // The `_.matchesProperty` iteratee shorthand.
      * _.dropWhile(users, ['active', false]);
      * // => objects for ['pebbles']
      *
      * // The `_.property` iteratee shorthand.
      * _.dropWhile(users, 'active');
      * // => objects for ['barney', 'fred', 'pebbles']
      */
     function dropWhile(array, predicate) {
       return (array && array.length)
         ? baseWhile(array, getIteratee(predicate, 3), true)
         : [];
     }
 
     /**
      * Fills elements of `array` with `value` from `start` up to, but not
      * including, `end`.
      *
      * **Note:** This method mutates `array`.
      *
      * @static
      * @memberOf _
      * @since 3.2.0
      * @category Array
      * @param {Array} array The array to fill.
      * @param {*} value The value to fill `array` with.
      * @param {number} [start=0] The start position.
      * @param {number} [end=array.length] The end position.
      * @returns {Array} Returns `array`.
      * @example
      *
      * var array = [1, 2, 3];
      *
      * _.fill(array, 'a');
      * console.log(array);
      * // => ['a', 'a', 'a']
      *
      * _.fill(Array(3), 2);
      * // => [2, 2, 2]
      *
      * _.fill([4, 6, 8, 10], '*', 1, 3);
      * // => [4, '*', '*', 10]
      */
     function fill(array, value, start, end) {
       var length = array == null ? 0 : array.length;
       if (!length) {
         return [];
       }
       if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {
         start = 0;
         end = length;
       }
       return baseFill(array, value, start, end);
     }
 
     /**
      * This method is like `_.find` except that it returns the index of the first
      * element `predicate` returns truthy for instead of the element itself.
      *
      * @static
      * @memberOf _
      * @since 1.1.0
      * @category Array
      * @param {Array} array The array to inspect.
      * @param {Function} [predicate=_.identity] The function invoked per iteration.
      * @param {number} [fromIndex=0] The index to search from.
      * @returns {number} Returns the index of the found element, else `-1`.
      * @example
      *
      * var users = [
      *   { 'user': 'barney',  'active': false },
      *   { 'user': 'fred',    'active': false },
      *   { 'user': 'pebbles', 'active': true }
      * ];
      *
      * _.findIndex(users, function(o) { return o.user == 'barney'; });
      * // => 0
      *
      * // The `_.matches` iteratee shorthand.
      * _.findIndex(users, { 'user': 'fred', 'active': false });
      * // => 1
      *
      * // The `_.matchesProperty` iteratee shorthand.
      * _.findIndex(users, ['active', false]);
      * // => 0
      *
      * // The `_.property` iteratee shorthand.
      * _.findIndex(users, 'active');
      * // => 2
      */
     function findIndex(array, predicate, fromIndex) {
       var length = array == null ? 0 : array.length;
       if (!length) {
         return -1;
       }
       var index = fromIndex == null ? 0 : toInteger(fromIndex);
       if (index < 0) {
         index = nativeMax(length + index, 0);
       }
       return baseFindIndex(array, getIteratee(predicate, 3), index);
     }
 
     /**
      * This method is like `_.findIndex` except that it iterates over elements
      * of `collection` from right to left.
      *
      * @static
      * @memberOf _
      * @since 2.0.0
      * @category Array
      * @param {Array} array The array to inspect.
      * @param {Function} [predicate=_.identity] The function invoked per iteration.
      * @param {number} [fromIndex=array.length-1] The index to search from.
      * @returns {number} Returns the index of the found element, else `-1`.
      * @example
      *
      * var users = [
      *   { 'user': 'barney',  'active': true },
      *   { 'user': 'fred',    'active': false },
      *   { 'user': 'pebbles', 'active': false }
      * ];
      *
      * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });
      * // => 2
      *
      * // The `_.matches` iteratee shorthand.
      * _.findLastIndex(users, { 'user': 'barney', 'active': true });
      * // => 0
      *
      * // The `_.matchesProperty` iteratee shorthand.
      * _.findLastIndex(users, ['active', false]);
      * // => 2
      *
      * // The `_.property` iteratee shorthand.
      * _.findLastIndex(users, 'active');
      * // => 0
      */
     function findLastIndex(array, predicate, fromIndex) {
       var length = array == null ? 0 : array.length;
       if (!length) {
         return -1;
       }
       var index = length - 1;
       if (fromIndex !== undefined) {
         index = toInteger(fromIndex);
         index = fromIndex < 0
           ? nativeMax(length + index, 0)
           : nativeMin(index, length - 1);
       }
       return baseFindIndex(array, getIteratee(predicate, 3), index, true);
     }
 
     /**
      * Flattens `array` a single level deep.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Array
      * @param {Array} array The array to flatten.
      * @returns {Array} Returns the new flattened array.
      * @example
      *
      * _.flatten([1, [2, [3, [4]], 5]]);
      * // => [1, 2, [3, [4]], 5]
      */
     function flatten(array) {
       var length = array == null ? 0 : array.length;
       return length ? baseFlatten(array, 1) : [];
     }
 
     /**
      * Recursively flattens `array`.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Array
      * @param {Array} array The array to flatten.
      * @returns {Array} Returns the new flattened array.
      * @example
      *
      * _.flattenDeep([1, [2, [3, [4]], 5]]);
      * // => [1, 2, 3, 4, 5]
      */
     function flattenDeep(array) {
       var length = array == null ? 0 : array.length;
       return length ? baseFlatten(array, INFINITY) : [];
     }
 
     /**
      * Recursively flatten `array` up to `depth` times.
      *
      * @static
      * @memberOf _
      * @since 4.4.0
      * @category Array
      * @param {Array} array The array to flatten.
      * @param {number} [depth=1] The maximum recursion depth.
      * @returns {Array} Returns the new flattened array.
      * @example
      *
      * var array = [1, [2, [3, [4]], 5]];
      *
      * _.flattenDepth(array, 1);
      * // => [1, 2, [3, [4]], 5]
      *
      * _.flattenDepth(array, 2);
      * // => [1, 2, 3, [4], 5]
      */
     function flattenDepth(array, depth) {
       var length = array == null ? 0 : array.length;
       if (!length) {
         return [];
       }
       depth = depth === undefined ? 1 : toInteger(depth);
       return baseFlatten(array, depth);
     }
 
     /**
      * The inverse of `_.toPairs`; this method returns an object composed
      * from key-value `pairs`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} pairs The key-value pairs.
      * @returns {Object} Returns the new object.
      * @example
      *
      * _.fromPairs([['a', 1], ['b', 2]]);
      * // => { 'a': 1, 'b': 2 }
      */
     function fromPairs(pairs) {
       var index = -1,
           length = pairs == null ? 0 : pairs.length,
           result = {};
 
       while (++index < length) {
         var pair = pairs[index];
         result[pair[0]] = pair[1];
       }
       return result;
     }
 
     /**
      * Gets the first element of `array`.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @alias first
      * @category Array
      * @param {Array} array The array to query.
      * @returns {*} Returns the first element of `array`.
      * @example
      *
      * _.head([1, 2, 3]);
      * // => 1
      *
      * _.head([]);
      * // => undefined
      */
     function head(array) {
       return (array && array.length) ? array[0] : undefined;
     }
 
     /**
      * Gets the index at which the first occurrence of `value` is found in `array`
      * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
      * for equality comparisons. If `fromIndex` is negative, it's used as the
      * offset from the end of `array`.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Array
      * @param {Array} array The array to inspect.
      * @param {*} value The value to search for.
      * @param {number} [fromIndex=0] The index to search from.
      * @returns {number} Returns the index of the matched value, else `-1`.
      * @example
      *
      * _.indexOf([1, 2, 1, 2], 2);
      * // => 1
      *
      * // Search from the `fromIndex`.
      * _.indexOf([1, 2, 1, 2], 2, 2);
      * // => 3
      */
     function indexOf(array, value, fromIndex) {
       var length = array == null ? 0 : array.length;
       if (!length) {
         return -1;
       }
       var index = fromIndex == null ? 0 : toInteger(fromIndex);
       if (index < 0) {
         index = nativeMax(length + index, 0);
       }
       return baseIndexOf(array, value, index);
     }
 
     /**
      * Gets all but the last element of `array`.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Array
      * @param {Array} array The array to query.
      * @returns {Array} Returns the slice of `array`.
      * @example
      *
      * _.initial([1, 2, 3]);
      * // => [1, 2]
      */
     function initial(array) {
       var length = array == null ? 0 : array.length;
       return length ? baseSlice(array, 0, -1) : [];
     }
 
     /**
      * Creates an array of unique values that are included in all given arrays
      * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
      * for equality comparisons. The order and references of result values are
      * determined by the first array.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Array
      * @param {...Array} [arrays] The arrays to inspect.
      * @returns {Array} Returns the new array of intersecting values.
      * @example
      *
      * _.intersection([2, 1], [2, 3]);
      * // => [2]
      */
     var intersection = baseRest(function(arrays) {
       var mapped = arrayMap(arrays, castArrayLikeObject);
       return (mapped.length && mapped[0] === arrays[0])
         ? baseIntersection(mapped)
         : [];
     });
 
     /**
      * This method is like `_.intersection` except that it accepts `iteratee`
      * which is invoked for each element of each `arrays` to generate the criterion
      * by which they're compared. The order and references of result values are
      * determined by the first array. The iteratee is invoked with one argument:
      * (value).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {...Array} [arrays] The arrays to inspect.
      * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
      * @returns {Array} Returns the new array of intersecting values.
      * @example
      *
      * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);
      * // => [2.1]
      *
      * // The `_.property` iteratee shorthand.
      * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
      * // => [{ 'x': 1 }]
      */
     var intersectionBy = baseRest(function(arrays) {
       var iteratee = last(arrays),
           mapped = arrayMap(arrays, castArrayLikeObject);
 
       if (iteratee === last(mapped)) {
         iteratee = undefined;
       } else {
         mapped.pop();
       }
       return (mapped.length && mapped[0] === arrays[0])
         ? baseIntersection(mapped, getIteratee(iteratee, 2))
         : [];
     });
 
     /**
      * This method is like `_.intersection` except that it accepts `comparator`
      * which is invoked to compare elements of `arrays`. The order and references
      * of result values are determined by the first array. The comparator is
      * invoked with two arguments: (arrVal, othVal).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {...Array} [arrays] The arrays to inspect.
      * @param {Function} [comparator] The comparator invoked per element.
      * @returns {Array} Returns the new array of intersecting values.
      * @example
      *
      * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
      * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
      *
      * _.intersectionWith(objects, others, _.isEqual);
      * // => [{ 'x': 1, 'y': 2 }]
      */
     var intersectionWith = baseRest(function(arrays) {
       var comparator = last(arrays),
           mapped = arrayMap(arrays, castArrayLikeObject);
 
       comparator = typeof comparator == 'function' ? comparator : undefined;
       if (comparator) {
         mapped.pop();
       }
       return (mapped.length && mapped[0] === arrays[0])
         ? baseIntersection(mapped, undefined, comparator)
         : [];
     });
 
     /**
      * Converts all elements in `array` into a string separated by `separator`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} array The array to convert.
      * @param {string} [separator=','] The element separator.
      * @returns {string} Returns the joined string.
      * @example
      *
      * _.join(['a', 'b', 'c'], '~');
      * // => 'a~b~c'
      */
     function join(array, separator) {
       return array == null ? '' : nativeJoin.call(array, separator);
     }
 
     /**
      * Gets the last element of `array`.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Array
      * @param {Array} array The array to query.
      * @returns {*} Returns the last element of `array`.
      * @example
      *
      * _.last([1, 2, 3]);
      * // => 3
      */
     function last(array) {
       var length = array == null ? 0 : array.length;
       return length ? array[length - 1] : undefined;
     }
 
     /**
      * This method is like `_.indexOf` except that it iterates over elements of
      * `array` from right to left.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Array
      * @param {Array} array The array to inspect.
      * @param {*} value The value to search for.
      * @param {number} [fromIndex=array.length-1] The index to search from.
      * @returns {number} Returns the index of the matched value, else `-1`.
      * @example
      *
      * _.lastIndexOf([1, 2, 1, 2], 2);
      * // => 3
      *
      * // Search from the `fromIndex`.
      * _.lastIndexOf([1, 2, 1, 2], 2, 2);
      * // => 1
      */
     function lastIndexOf(array, value, fromIndex) {
       var length = array == null ? 0 : array.length;
       if (!length) {
         return -1;
       }
       var index = length;
       if (fromIndex !== undefined) {
         index = toInteger(fromIndex);
         index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);
       }
       return value === value
         ? strictLastIndexOf(array, value, index)
         : baseFindIndex(array, baseIsNaN, index, true);
     }
 
     /**
      * Gets the element at index `n` of `array`. If `n` is negative, the nth
      * element from the end is returned.
      *
      * @static
      * @memberOf _
      * @since 4.11.0
      * @category Array
      * @param {Array} array The array to query.
      * @param {number} [n=0] The index of the element to return.
      * @returns {*} Returns the nth element of `array`.
      * @example
      *
      * var array = ['a', 'b', 'c', 'd'];
      *
      * _.nth(array, 1);
      * // => 'b'
      *
      * _.nth(array, -2);
      * // => 'c';
      */
     function nth(array, n) {
       return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;
     }
 
     /**
      * Removes all given values from `array` using
      * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
      * for equality comparisons.
      *
      * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`
      * to remove elements from an array by predicate.
      *
      * @static
      * @memberOf _
      * @since 2.0.0
      * @category Array
      * @param {Array} array The array to modify.
      * @param {...*} [values] The values to remove.
      * @returns {Array} Returns `array`.
      * @example
      *
      * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
      *
      * _.pull(array, 'a', 'c');
      * console.log(array);
      * // => ['b', 'b']
      */
     var pull = baseRest(pullAll);
 
     /**
      * This method is like `_.pull` except that it accepts an array of values to remove.
      *
      * **Note:** Unlike `_.difference`, this method mutates `array`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} array The array to modify.
      * @param {Array} values The values to remove.
      * @returns {Array} Returns `array`.
      * @example
      *
      * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
      *
      * _.pullAll(array, ['a', 'c']);
      * console.log(array);
      * // => ['b', 'b']
      */
     function pullAll(array, values) {
       return (array && array.length && values && values.length)
         ? basePullAll(array, values)
         : array;
     }
 
     /**
      * This method is like `_.pullAll` except that it accepts `iteratee` which is
      * invoked for each element of `array` and `values` to generate the criterion
      * by which they're compared. The iteratee is invoked with one argument: (value).
      *
      * **Note:** Unlike `_.differenceBy`, this method mutates `array`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} array The array to modify.
      * @param {Array} values The values to remove.
      * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
      * @returns {Array} Returns `array`.
      * @example
      *
      * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];
      *
      * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');
      * console.log(array);
      * // => [{ 'x': 2 }]
      */
     function pullAllBy(array, values, iteratee) {
       return (array && array.length && values && values.length)
         ? basePullAll(array, values, getIteratee(iteratee, 2))
         : array;
     }
 
     /**
      * This method is like `_.pullAll` except that it accepts `comparator` which
      * is invoked to compare elements of `array` to `values`. The comparator is
      * invoked with two arguments: (arrVal, othVal).
      *
      * **Note:** Unlike `_.differenceWith`, this method mutates `array`.
      *
      * @static
      * @memberOf _
      * @since 4.6.0
      * @category Array
      * @param {Array} array The array to modify.
      * @param {Array} values The values to remove.
      * @param {Function} [comparator] The comparator invoked per element.
      * @returns {Array} Returns `array`.
      * @example
      *
      * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];
      *
      * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);
      * console.log(array);
      * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]
      */
     function pullAllWith(array, values, comparator) {
       return (array && array.length && values && values.length)
         ? basePullAll(array, values, undefined, comparator)
         : array;
     }
 
     /**
      * Removes elements from `array` corresponding to `indexes` and returns an
      * array of removed elements.
      *
      * **Note:** Unlike `_.at`, this method mutates `array`.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Array
      * @param {Array} array The array to modify.
      * @param {...(number|number[])} [indexes] The indexes of elements to remove.
      * @returns {Array} Returns the new array of removed elements.
      * @example
      *
      * var array = ['a', 'b', 'c', 'd'];
      * var pulled = _.pullAt(array, [1, 3]);
      *
      * console.log(array);
      * // => ['a', 'c']
      *
      * console.log(pulled);
      * // => ['b', 'd']
      */
     var pullAt = flatRest(function(array, indexes) {
       var length = array == null ? 0 : array.length,
           result = baseAt(array, indexes);
 
       basePullAt(array, arrayMap(indexes, function(index) {
         return isIndex(index, length) ? +index : index;
       }).sort(compareAscending));
 
       return result;
     });
 
     /**
      * Removes all elements from `array` that `predicate` returns truthy for
      * and returns an array of the removed elements. The predicate is invoked
      * with three arguments: (value, index, array).
      *
      * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`
      * to pull elements from an array by value.
      *
      * @static
      * @memberOf _
      * @since 2.0.0
      * @category Array
      * @param {Array} array The array to modify.
      * @param {Function} [predicate=_.identity] The function invoked per iteration.
      * @returns {Array} Returns the new array of removed elements.
      * @example
      *
      * var array = [1, 2, 3, 4];
      * var evens = _.remove(array, function(n) {
      *   return n % 2 == 0;
      * });
      *
      * console.log(array);
      * // => [1, 3]
      *
      * console.log(evens);
      * // => [2, 4]
      */
     function remove(array, predicate) {
       var result = [];
       if (!(array && array.length)) {
         return result;
       }
       var index = -1,
           indexes = [],
           length = array.length;
 
       predicate = getIteratee(predicate, 3);
       while (++index < length) {
         var value = array[index];
         if (predicate(value, index, array)) {
           result.push(value);
           indexes.push(index);
         }
       }
       basePullAt(array, indexes);
       return result;
     }
 
     /**
      * Reverses `array` so that the first element becomes the last, the second
      * element becomes the second to last, and so on.
      *
      * **Note:** This method mutates `array` and is based on
      * [`Array#reverse`](https://mdn.io/Array/reverse).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} array The array to modify.
      * @returns {Array} Returns `array`.
      * @example
      *
      * var array = [1, 2, 3];
      *
      * _.reverse(array);
      * // => [3, 2, 1]
      *
      * console.log(array);
      * // => [3, 2, 1]
      */
     function reverse(array) {
       return array == null ? array : nativeReverse.call(array);
     }
 
     /**
      * Creates a slice of `array` from `start` up to, but not including, `end`.
      *
      * **Note:** This method is used instead of
      * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are
      * returned.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Array
      * @param {Array} array The array to slice.
      * @param {number} [start=0] The start position.
      * @param {number} [end=array.length] The end position.
      * @returns {Array} Returns the slice of `array`.
      */
     function slice(array, start, end) {
       var length = array == null ? 0 : array.length;
       if (!length) {
         return [];
       }
       if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {
         start = 0;
         end = length;
       }
       else {
         start = start == null ? 0 : toInteger(start);
         end = end === undefined ? length : toInteger(end);
       }
       return baseSlice(array, start, end);
     }
 
     /**
      * Uses a binary search to determine the lowest index at which `value`
      * should be inserted into `array` in order to maintain its sort order.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Array
      * @param {Array} array The sorted array to inspect.
      * @param {*} value The value to evaluate.
      * @returns {number} Returns the index at which `value` should be inserted
      *  into `array`.
      * @example
      *
      * _.sortedIndex([30, 50], 40);
      * // => 1
      */
     function sortedIndex(array, value) {
       return baseSortedIndex(array, value);
     }
 
     /**
      * This method is like `_.sortedIndex` except that it accepts `iteratee`
      * which is invoked for `value` and each element of `array` to compute their
      * sort ranking. The iteratee is invoked with one argument: (value).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} array The sorted array to inspect.
      * @param {*} value The value to evaluate.
      * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
      * @returns {number} Returns the index at which `value` should be inserted
      *  into `array`.
      * @example
      *
      * var objects = [{ 'x': 4 }, { 'x': 5 }];
      *
      * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
      * // => 0
      *
      * // The `_.property` iteratee shorthand.
      * _.sortedIndexBy(objects, { 'x': 4 }, 'x');
      * // => 0
      */
     function sortedIndexBy(array, value, iteratee) {
       return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));
     }
 
     /**
      * This method is like `_.indexOf` except that it performs a binary
      * search on a sorted `array`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} array The array to inspect.
      * @param {*} value The value to search for.
      * @returns {number} Returns the index of the matched value, else `-1`.
      * @example
      *
      * _.sortedIndexOf([4, 5, 5, 5, 6], 5);
      * // => 1
      */
     function sortedIndexOf(array, value) {
       var length = array == null ? 0 : array.length;
       if (length) {
         var index = baseSortedIndex(array, value);
         if (index < length && eq(array[index], value)) {
           return index;
         }
       }
       return -1;
     }
 
     /**
      * This method is like `_.sortedIndex` except that it returns the highest
      * index at which `value` should be inserted into `array` in order to
      * maintain its sort order.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Array
      * @param {Array} array The sorted array to inspect.
      * @param {*} value The value to evaluate.
      * @returns {number} Returns the index at which `value` should be inserted
      *  into `array`.
      * @example
      *
      * _.sortedLastIndex([4, 5, 5, 5, 6], 5);
      * // => 4
      */
     function sortedLastIndex(array, value) {
       return baseSortedIndex(array, value, true);
     }
 
     /**
      * This method is like `_.sortedLastIndex` except that it accepts `iteratee`
      * which is invoked for `value` and each element of `array` to compute their
      * sort ranking. The iteratee is invoked with one argument: (value).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} array The sorted array to inspect.
      * @param {*} value The value to evaluate.
      * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
      * @returns {number} Returns the index at which `value` should be inserted
      *  into `array`.
      * @example
      *
      * var objects = [{ 'x': 4 }, { 'x': 5 }];
      *
      * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
      * // => 1
      *
      * // The `_.property` iteratee shorthand.
      * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');
      * // => 1
      */
     function sortedLastIndexBy(array, value, iteratee) {
       return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);
     }
 
     /**
      * This method is like `_.lastIndexOf` except that it performs a binary
      * search on a sorted `array`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} array The array to inspect.
      * @param {*} value The value to search for.
      * @returns {number} Returns the index of the matched value, else `-1`.
      * @example
      *
      * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);
      * // => 3
      */
     function sortedLastIndexOf(array, value) {
       var length = array == null ? 0 : array.length;
       if (length) {
         var index = baseSortedIndex(array, value, true) - 1;
         if (eq(array[index], value)) {
           return index;
         }
       }
       return -1;
     }
 
     /**
      * This method is like `_.uniq` except that it's designed and optimized
      * for sorted arrays.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} array The array to inspect.
      * @returns {Array} Returns the new duplicate free array.
      * @example
      *
      * _.sortedUniq([1, 1, 2]);
      * // => [1, 2]
      */
     function sortedUniq(array) {
       return (array && array.length)
         ? baseSortedUniq(array)
         : [];
     }
 
     /**
      * This method is like `_.uniqBy` except that it's designed and optimized
      * for sorted arrays.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} array The array to inspect.
      * @param {Function} [iteratee] The iteratee invoked per element.
      * @returns {Array} Returns the new duplicate free array.
      * @example
      *
      * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);
      * // => [1.1, 2.3]
      */
     function sortedUniqBy(array, iteratee) {
       return (array && array.length)
         ? baseSortedUniq(array, getIteratee(iteratee, 2))
         : [];
     }
 
     /**
      * Gets all but the first element of `array`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} array The array to query.
      * @returns {Array} Returns the slice of `array`.
      * @example
      *
      * _.tail([1, 2, 3]);
      * // => [2, 3]
      */
     function tail(array) {
       var length = array == null ? 0 : array.length;
       return length ? baseSlice(array, 1, length) : [];
     }
 
     /**
      * Creates a slice of `array` with `n` elements taken from the beginning.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Array
      * @param {Array} array The array to query.
      * @param {number} [n=1] The number of elements to take.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {Array} Returns the slice of `array`.
      * @example
      *
      * _.take([1, 2, 3]);
      * // => [1]
      *
      * _.take([1, 2, 3], 2);
      * // => [1, 2]
      *
      * _.take([1, 2, 3], 5);
      * // => [1, 2, 3]
      *
      * _.take([1, 2, 3], 0);
      * // => []
      */
     function take(array, n, guard) {
       if (!(array && array.length)) {
         return [];
       }
       n = (guard || n === undefined) ? 1 : toInteger(n);
       return baseSlice(array, 0, n < 0 ? 0 : n);
     }
 
     /**
      * Creates a slice of `array` with `n` elements taken from the end.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Array
      * @param {Array} array The array to query.
      * @param {number} [n=1] The number of elements to take.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {Array} Returns the slice of `array`.
      * @example
      *
      * _.takeRight([1, 2, 3]);
      * // => [3]
      *
      * _.takeRight([1, 2, 3], 2);
      * // => [2, 3]
      *
      * _.takeRight([1, 2, 3], 5);
      * // => [1, 2, 3]
      *
      * _.takeRight([1, 2, 3], 0);
      * // => []
      */
     function takeRight(array, n, guard) {
       var length = array == null ? 0 : array.length;
       if (!length) {
         return [];
       }
       n = (guard || n === undefined) ? 1 : toInteger(n);
       n = length - n;
       return baseSlice(array, n < 0 ? 0 : n, length);
     }
 
     /**
      * Creates a slice of `array` with elements taken from the end. Elements are
      * taken until `predicate` returns falsey. The predicate is invoked with
      * three arguments: (value, index, array).
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Array
      * @param {Array} array The array to query.
      * @param {Function} [predicate=_.identity] The function invoked per iteration.
      * @returns {Array} Returns the slice of `array`.
      * @example
      *
      * var users = [
      *   { 'user': 'barney',  'active': true },
      *   { 'user': 'fred',    'active': false },
      *   { 'user': 'pebbles', 'active': false }
      * ];
      *
      * _.takeRightWhile(users, function(o) { return !o.active; });
      * // => objects for ['fred', 'pebbles']
      *
      * // The `_.matches` iteratee shorthand.
      * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });
      * // => objects for ['pebbles']
      *
      * // The `_.matchesProperty` iteratee shorthand.
      * _.takeRightWhile(users, ['active', false]);
      * // => objects for ['fred', 'pebbles']
      *
      * // The `_.property` iteratee shorthand.
      * _.takeRightWhile(users, 'active');
      * // => []
      */
     function takeRightWhile(array, predicate) {
       return (array && array.length)
         ? baseWhile(array, getIteratee(predicate, 3), false, true)
         : [];
     }
 
     /**
      * Creates a slice of `array` with elements taken from the beginning. Elements
      * are taken until `predicate` returns falsey. The predicate is invoked with
      * three arguments: (value, index, array).
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Array
      * @param {Array} array The array to query.
      * @param {Function} [predicate=_.identity] The function invoked per iteration.
      * @returns {Array} Returns the slice of `array`.
      * @example
      *
      * var users = [
      *   { 'user': 'barney',  'active': false },
      *   { 'user': 'fred',    'active': false },
      *   { 'user': 'pebbles', 'active': true }
      * ];
      *
      * _.takeWhile(users, function(o) { return !o.active; });
      * // => objects for ['barney', 'fred']
      *
      * // The `_.matches` iteratee shorthand.
      * _.takeWhile(users, { 'user': 'barney', 'active': false });
      * // => objects for ['barney']
      *
      * // The `_.matchesProperty` iteratee shorthand.
      * _.takeWhile(users, ['active', false]);
      * // => objects for ['barney', 'fred']
      *
      * // The `_.property` iteratee shorthand.
      * _.takeWhile(users, 'active');
      * // => []
      */
     function takeWhile(array, predicate) {
       return (array && array.length)
         ? baseWhile(array, getIteratee(predicate, 3))
         : [];
     }
 
     /**
      * Creates an array of unique values, in order, from all given arrays using
      * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
      * for equality comparisons.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Array
      * @param {...Array} [arrays] The arrays to inspect.
      * @returns {Array} Returns the new array of combined values.
      * @example
      *
      * _.union([2], [1, 2]);
      * // => [2, 1]
      */
     var union = baseRest(function(arrays) {
       return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));
     });
 
     /**
      * This method is like `_.union` except that it accepts `iteratee` which is
      * invoked for each element of each `arrays` to generate the criterion by
      * which uniqueness is computed. Result values are chosen from the first
      * array in which the value occurs. The iteratee is invoked with one argument:
      * (value).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {...Array} [arrays] The arrays to inspect.
      * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
      * @returns {Array} Returns the new array of combined values.
      * @example
      *
      * _.unionBy([2.1], [1.2, 2.3], Math.floor);
      * // => [2.1, 1.2]
      *
      * // The `_.property` iteratee shorthand.
      * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
      * // => [{ 'x': 1 }, { 'x': 2 }]
      */
     var unionBy = baseRest(function(arrays) {
       var iteratee = last(arrays);
       if (isArrayLikeObject(iteratee)) {
         iteratee = undefined;
       }
       return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));
     });
 
     /**
      * This method is like `_.union` except that it accepts `comparator` which
      * is invoked to compare elements of `arrays`. Result values are chosen from
      * the first array in which the value occurs. The comparator is invoked
      * with two arguments: (arrVal, othVal).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {...Array} [arrays] The arrays to inspect.
      * @param {Function} [comparator] The comparator invoked per element.
      * @returns {Array} Returns the new array of combined values.
      * @example
      *
      * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
      * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
      *
      * _.unionWith(objects, others, _.isEqual);
      * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
      */
     var unionWith = baseRest(function(arrays) {
       var comparator = last(arrays);
       comparator = typeof comparator == 'function' ? comparator : undefined;
       return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);
     });
 
     /**
      * Creates a duplicate-free version of an array, using
      * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
      * for equality comparisons, in which only the first occurrence of each element
      * is kept. The order of result values is determined by the order they occur
      * in the array.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Array
      * @param {Array} array The array to inspect.
      * @returns {Array} Returns the new duplicate free array.
      * @example
      *
      * _.uniq([2, 1, 2]);
      * // => [2, 1]
      */
     function uniq(array) {
       return (array && array.length) ? baseUniq(array) : [];
     }
 
     /**
      * This method is like `_.uniq` except that it accepts `iteratee` which is
      * invoked for each element in `array` to generate the criterion by which
      * uniqueness is computed. The order of result values is determined by the
      * order they occur in the array. The iteratee is invoked with one argument:
      * (value).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} array The array to inspect.
      * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
      * @returns {Array} Returns the new duplicate free array.
      * @example
      *
      * _.uniqBy([2.1, 1.2, 2.3], Math.floor);
      * // => [2.1, 1.2]
      *
      * // The `_.property` iteratee shorthand.
      * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
      * // => [{ 'x': 1 }, { 'x': 2 }]
      */
     function uniqBy(array, iteratee) {
       return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];
     }
 
     /**
      * This method is like `_.uniq` except that it accepts `comparator` which
      * is invoked to compare elements of `array`. The order of result values is
      * determined by the order they occur in the array.The comparator is invoked
      * with two arguments: (arrVal, othVal).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {Array} array The array to inspect.
      * @param {Function} [comparator] The comparator invoked per element.
      * @returns {Array} Returns the new duplicate free array.
      * @example
      *
      * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];
      *
      * _.uniqWith(objects, _.isEqual);
      * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]
      */
     function uniqWith(array, comparator) {
       comparator = typeof comparator == 'function' ? comparator : undefined;
       return (array && array.length) ? baseUniq(array, undefined, comparator) : [];
     }
 
     /**
      * This method is like `_.zip` except that it accepts an array of grouped
      * elements and creates an array regrouping the elements to their pre-zip
      * configuration.
      *
      * @static
      * @memberOf _
      * @since 1.2.0
      * @category Array
      * @param {Array} array The array of grouped elements to process.
      * @returns {Array} Returns the new array of regrouped elements.
      * @example
      *
      * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);
      * // => [['a', 1, true], ['b', 2, false]]
      *
      * _.unzip(zipped);
      * // => [['a', 'b'], [1, 2], [true, false]]
      */
     function unzip(array) {
       if (!(array && array.length)) {
         return [];
       }
       var length = 0;
       array = arrayFilter(array, function(group) {
         if (isArrayLikeObject(group)) {
           length = nativeMax(group.length, length);
           return true;
         }
       });
       return baseTimes(length, function(index) {
         return arrayMap(array, baseProperty(index));
       });
     }
 
     /**
      * This method is like `_.unzip` except that it accepts `iteratee` to specify
      * how regrouped values should be combined. The iteratee is invoked with the
      * elements of each group: (...group).
      *
      * @static
      * @memberOf _
      * @since 3.8.0
      * @category Array
      * @param {Array} array The array of grouped elements to process.
      * @param {Function} [iteratee=_.identity] The function to combine
      *  regrouped values.
      * @returns {Array} Returns the new array of regrouped elements.
      * @example
      *
      * var zipped = _.zip([1, 2], [10, 20], [100, 200]);
      * // => [[1, 10, 100], [2, 20, 200]]
      *
      * _.unzipWith(zipped, _.add);
      * // => [3, 30, 300]
      */
     function unzipWith(array, iteratee) {
       if (!(array && array.length)) {
         return [];
       }
       var result = unzip(array);
       if (iteratee == null) {
         return result;
       }
       return arrayMap(result, function(group) {
         return apply(iteratee, undefined, group);
       });
     }
 
     /**
      * Creates an array excluding all given values using
      * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
      * for equality comparisons.
      *
      * **Note:** Unlike `_.pull`, this method returns a new array.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Array
      * @param {Array} array The array to inspect.
      * @param {...*} [values] The values to exclude.
      * @returns {Array} Returns the new array of filtered values.
      * @see _.difference, _.xor
      * @example
      *
      * _.without([2, 1, 2, 3], 1, 2);
      * // => [3]
      */
     var without = baseRest(function(array, values) {
       return isArrayLikeObject(array)
         ? baseDifference(array, values)
         : [];
     });
 
     /**
      * Creates an array of unique values that is the
      * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)
      * of the given arrays. The order of result values is determined by the order
      * they occur in the arrays.
      *
      * @static
      * @memberOf _
      * @since 2.4.0
      * @category Array
      * @param {...Array} [arrays] The arrays to inspect.
      * @returns {Array} Returns the new array of filtered values.
      * @see _.difference, _.without
      * @example
      *
      * _.xor([2, 1], [2, 3]);
      * // => [1, 3]
      */
     var xor = baseRest(function(arrays) {
       return baseXor(arrayFilter(arrays, isArrayLikeObject));
     });
 
     /**
      * This method is like `_.xor` except that it accepts `iteratee` which is
      * invoked for each element of each `arrays` to generate the criterion by
      * which by which they're compared. The order of result values is determined
      * by the order they occur in the arrays. The iteratee is invoked with one
      * argument: (value).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {...Array} [arrays] The arrays to inspect.
      * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
      * @returns {Array} Returns the new array of filtered values.
      * @example
      *
      * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);
      * // => [1.2, 3.4]
      *
      * // The `_.property` iteratee shorthand.
      * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
      * // => [{ 'x': 2 }]
      */
     var xorBy = baseRest(function(arrays) {
       var iteratee = last(arrays);
       if (isArrayLikeObject(iteratee)) {
         iteratee = undefined;
       }
       return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));
     });
 
     /**
      * This method is like `_.xor` except that it accepts `comparator` which is
      * invoked to compare elements of `arrays`. The order of result values is
      * determined by the order they occur in the arrays. The comparator is invoked
      * with two arguments: (arrVal, othVal).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Array
      * @param {...Array} [arrays] The arrays to inspect.
      * @param {Function} [comparator] The comparator invoked per element.
      * @returns {Array} Returns the new array of filtered values.
      * @example
      *
      * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
      * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
      *
      * _.xorWith(objects, others, _.isEqual);
      * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
      */
     var xorWith = baseRest(function(arrays) {
       var comparator = last(arrays);
       comparator = typeof comparator == 'function' ? comparator : undefined;
       return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);
     });
 
     /**
      * Creates an array of grouped elements, the first of which contains the
      * first elements of the given arrays, the second of which contains the
      * second elements of the given arrays, and so on.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Array
      * @param {...Array} [arrays] The arrays to process.
      * @returns {Array} Returns the new array of grouped elements.
      * @example
      *
      * _.zip(['a', 'b'], [1, 2], [true, false]);
      * // => [['a', 1, true], ['b', 2, false]]
      */
     var zip = baseRest(unzip);
 
     /**
      * This method is like `_.fromPairs` except that it accepts two arrays,
      * one of property identifiers and one of corresponding values.
      *
      * @static
      * @memberOf _
      * @since 0.4.0
      * @category Array
      * @param {Array} [props=[]] The property identifiers.
      * @param {Array} [values=[]] The property values.
      * @returns {Object} Returns the new object.
      * @example
      *
      * _.zipObject(['a', 'b'], [1, 2]);
      * // => { 'a': 1, 'b': 2 }
      */
     function zipObject(props, values) {
       return baseZipObject(props || [], values || [], assignValue);
     }
 
     /**
      * This method is like `_.zipObject` except that it supports property paths.
      *
      * @static
      * @memberOf _
      * @since 4.1.0
      * @category Array
      * @param {Array} [props=[]] The property identifiers.
      * @param {Array} [values=[]] The property values.
      * @returns {Object} Returns the new object.
      * @example
      *
      * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);
      * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }
      */
     function zipObjectDeep(props, values) {
       return baseZipObject(props || [], values || [], baseSet);
     }
 
     /**
      * This method is like `_.zip` except that it accepts `iteratee` to specify
      * how grouped values should be combined. The iteratee is invoked with the
      * elements of each group: (...group).
      *
      * @static
      * @memberOf _
      * @since 3.8.0
      * @category Array
      * @param {...Array} [arrays] The arrays to process.
      * @param {Function} [iteratee=_.identity] The function to combine
      *  grouped values.
      * @returns {Array} Returns the new array of grouped elements.
      * @example
      *
      * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {
      *   return a + b + c;
      * });
      * // => [111, 222]
      */
     var zipWith = baseRest(function(arrays) {
       var length = arrays.length,
           iteratee = length > 1 ? arrays[length - 1] : undefined;
 
       iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;
       return unzipWith(arrays, iteratee);
     });
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Creates a `lodash` wrapper instance that wraps `value` with explicit method
      * chain sequences enabled. The result of such sequences must be unwrapped
      * with `_#value`.
      *
      * @static
      * @memberOf _
      * @since 1.3.0
      * @category Seq
      * @param {*} value The value to wrap.
      * @returns {Object} Returns the new `lodash` wrapper instance.
      * @example
      *
      * var users = [
      *   { 'user': 'barney',  'age': 36 },
      *   { 'user': 'fred',    'age': 40 },
      *   { 'user': 'pebbles', 'age': 1 }
      * ];
      *
      * var youngest = _
      *   .chain(users)
      *   .sortBy('age')
      *   .map(function(o) {
      *     return o.user + ' is ' + o.age;
      *   })
      *   .head()
      *   .value();
      * // => 'pebbles is 1'
      */
     function chain(value) {
       var result = lodash(value);
       result.__chain__ = true;
       return result;
     }
 
     /**
      * This method invokes `interceptor` and returns `value`. The interceptor
      * is invoked with one argument; (value). The purpose of this method is to
      * "tap into" a method chain sequence in order to modify intermediate results.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Seq
      * @param {*} value The value to provide to `interceptor`.
      * @param {Function} interceptor The function to invoke.
      * @returns {*} Returns `value`.
      * @example
      *
      * _([1, 2, 3])
      *  .tap(function(array) {
      *    // Mutate input array.
      *    array.pop();
      *  })
      *  .reverse()
      *  .value();
      * // => [2, 1]
      */
     function tap(value, interceptor) {
       interceptor(value);
       return value;
     }
 
     /**
      * This method is like `_.tap` except that it returns the result of `interceptor`.
      * The purpose of this method is to "pass thru" values replacing intermediate
      * results in a method chain sequence.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Seq
      * @param {*} value The value to provide to `interceptor`.
      * @param {Function} interceptor The function to invoke.
      * @returns {*} Returns the result of `interceptor`.
      * @example
      *
      * _('  abc  ')
      *  .chain()
      *  .trim()
      *  .thru(function(value) {
      *    return [value];
      *  })
      *  .value();
      * // => ['abc']
      */
     function thru(value, interceptor) {
       return interceptor(value);
     }
 
     /**
      * This method is the wrapper version of `_.at`.
      *
      * @name at
      * @memberOf _
      * @since 1.0.0
      * @category Seq
      * @param {...(string|string[])} [paths] The property paths to pick.
      * @returns {Object} Returns the new `lodash` wrapper instance.
      * @example
      *
      * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
      *
      * _(object).at(['a[0].b.c', 'a[1]']).value();
      * // => [3, 4]
      */
     var wrapperAt = flatRest(function(paths) {
       var length = paths.length,
           start = length ? paths[0] : 0,
           value = this.__wrapped__,
           interceptor = function(object) { return baseAt(object, paths); };
 
       if (length > 1 || this.__actions__.length ||
           !(value instanceof LazyWrapper) || !isIndex(start)) {
         return this.thru(interceptor);
       }
       value = value.slice(start, +start + (length ? 1 : 0));
       value.__actions__.push({
         'func': thru,
         'args': [interceptor],
         'thisArg': undefined
       });
       return new LodashWrapper(value, this.__chain__).thru(function(array) {
         if (length && !array.length) {
           array.push(undefined);
         }
         return array;
       });
     });
 
     /**
      * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.
      *
      * @name chain
      * @memberOf _
      * @since 0.1.0
      * @category Seq
      * @returns {Object} Returns the new `lodash` wrapper instance.
      * @example
      *
      * var users = [
      *   { 'user': 'barney', 'age': 36 },
      *   { 'user': 'fred',   'age': 40 }
      * ];
      *
      * // A sequence without explicit chaining.
      * _(users).head();
      * // => { 'user': 'barney', 'age': 36 }
      *
      * // A sequence with explicit chaining.
      * _(users)
      *   .chain()
      *   .head()
      *   .pick('user')
      *   .value();
      * // => { 'user': 'barney' }
      */
     function wrapperChain() {
       return chain(this);
     }
 
     /**
      * Executes the chain sequence and returns the wrapped result.
      *
      * @name commit
      * @memberOf _
      * @since 3.2.0
      * @category Seq
      * @returns {Object} Returns the new `lodash` wrapper instance.
      * @example
      *
      * var array = [1, 2];
      * var wrapped = _(array).push(3);
      *
      * console.log(array);
      * // => [1, 2]
      *
      * wrapped = wrapped.commit();
      * console.log(array);
      * // => [1, 2, 3]
      *
      * wrapped.last();
      * // => 3
      *
      * console.log(array);
      * // => [1, 2, 3]
      */
     function wrapperCommit() {
       return new LodashWrapper(this.value(), this.__chain__);
     }
 
     /**
      * Gets the next value on a wrapped object following the
      * [iterator protocol](https://mdn.io/iteration_protocols#iterator).
      *
      * @name next
      * @memberOf _
      * @since 4.0.0
      * @category Seq
      * @returns {Object} Returns the next iterator value.
      * @example
      *
      * var wrapped = _([1, 2]);
      *
      * wrapped.next();
      * // => { 'done': false, 'value': 1 }
      *
      * wrapped.next();
      * // => { 'done': false, 'value': 2 }
      *
      * wrapped.next();
      * // => { 'done': true, 'value': undefined }
      */
     function wrapperNext() {
       if (this.__values__ === undefined) {
         this.__values__ = toArray(this.value());
       }
       var done = this.__index__ >= this.__values__.length,
           value = done ? undefined : this.__values__[this.__index__++];
 
       return { 'done': done, 'value': value };
     }
 
     /**
      * Enables the wrapper to be iterable.
      *
      * @name Symbol.iterator
      * @memberOf _
      * @since 4.0.0
      * @category Seq
      * @returns {Object} Returns the wrapper object.
      * @example
      *
      * var wrapped = _([1, 2]);
      *
      * wrapped[Symbol.iterator]() === wrapped;
      * // => true
      *
      * Array.from(wrapped);
      * // => [1, 2]
      */
     function wrapperToIterator() {
       return this;
     }
 
     /**
      * Creates a clone of the chain sequence planting `value` as the wrapped value.
      *
      * @name plant
      * @memberOf _
      * @since 3.2.0
      * @category Seq
      * @param {*} value The value to plant.
      * @returns {Object} Returns the new `lodash` wrapper instance.
      * @example
      *
      * function square(n) {
      *   return n * n;
      * }
      *
      * var wrapped = _([1, 2]).map(square);
      * var other = wrapped.plant([3, 4]);
      *
      * other.value();
      * // => [9, 16]
      *
      * wrapped.value();
      * // => [1, 4]
      */
     function wrapperPlant(value) {
       var result,
           parent = this;
 
       while (parent instanceof baseLodash) {
         var clone = wrapperClone(parent);
         clone.__index__ = 0;
         clone.__values__ = undefined;
         if (result) {
           previous.__wrapped__ = clone;
         } else {
           result = clone;
         }
         var previous = clone;
         parent = parent.__wrapped__;
       }
       previous.__wrapped__ = value;
       return result;
     }
 
     /**
      * This method is the wrapper version of `_.reverse`.
      *
      * **Note:** This method mutates the wrapped array.
      *
      * @name reverse
      * @memberOf _
      * @since 0.1.0
      * @category Seq
      * @returns {Object} Returns the new `lodash` wrapper instance.
      * @example
      *
      * var array = [1, 2, 3];
      *
      * _(array).reverse().value()
      * // => [3, 2, 1]
      *
      * console.log(array);
      * // => [3, 2, 1]
      */
     function wrapperReverse() {
       var value = this.__wrapped__;
       if (value instanceof LazyWrapper) {
         var wrapped = value;
         if (this.__actions__.length) {
           wrapped = new LazyWrapper(this);
         }
         wrapped = wrapped.reverse();
         wrapped.__actions__.push({
           'func': thru,
           'args': [reverse],
           'thisArg': undefined
         });
         return new LodashWrapper(wrapped, this.__chain__);
       }
       return this.thru(reverse);
     }
 
     /**
      * Executes the chain sequence to resolve the unwrapped value.
      *
      * @name value
      * @memberOf _
      * @since 0.1.0
      * @alias toJSON, valueOf
      * @category Seq
      * @returns {*} Returns the resolved unwrapped value.
      * @example
      *
      * _([1, 2, 3]).value();
      * // => [1, 2, 3]
      */
     function wrapperValue() {
       return baseWrapperValue(this.__wrapped__, this.__actions__);
     }
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Creates an object composed of keys generated from the results of running
      * each element of `collection` thru `iteratee`. The corresponding value of
      * each key is the number of times the key was returned by `iteratee`. The
      * iteratee is invoked with one argument: (value).
      *
      * @static
      * @memberOf _
      * @since 0.5.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
      * @returns {Object} Returns the composed aggregate object.
      * @example
      *
      * _.countBy([6.1, 4.2, 6.3], Math.floor);
      * // => { '4': 1, '6': 2 }
      *
      * // The `_.property` iteratee shorthand.
      * _.countBy(['one', 'two', 'three'], 'length');
      * // => { '3': 2, '5': 1 }
      */
     var countBy = createAggregator(function(result, value, key) {
       if (hasOwnProperty.call(result, key)) {
         ++result[key];
       } else {
         baseAssignValue(result, key, 1);
       }
     });
 
     /**
      * Checks if `predicate` returns truthy for **all** elements of `collection`.
      * Iteration is stopped once `predicate` returns falsey. The predicate is
      * invoked with three arguments: (value, index|key, collection).
      *
      * **Note:** This method returns `true` for
      * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because
      * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of
      * elements of empty collections.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} [predicate=_.identity] The function invoked per iteration.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {boolean} Returns `true` if all elements pass the predicate check,
      *  else `false`.
      * @example
      *
      * _.every([true, 1, null, 'yes'], Boolean);
      * // => false
      *
      * var users = [
      *   { 'user': 'barney', 'age': 36, 'active': false },
      *   { 'user': 'fred',   'age': 40, 'active': false }
      * ];
      *
      * // The `_.matches` iteratee shorthand.
      * _.every(users, { 'user': 'barney', 'active': false });
      * // => false
      *
      * // The `_.matchesProperty` iteratee shorthand.
      * _.every(users, ['active', false]);
      * // => true
      *
      * // The `_.property` iteratee shorthand.
      * _.every(users, 'active');
      * // => false
      */
     function every(collection, predicate, guard) {
       var func = isArray(collection) ? arrayEvery : baseEvery;
       if (guard && isIterateeCall(collection, predicate, guard)) {
         predicate = undefined;
       }
       return func(collection, getIteratee(predicate, 3));
     }
 
     /**
      * Iterates over elements of `collection`, returning an array of all elements
      * `predicate` returns truthy for. The predicate is invoked with three
      * arguments: (value, index|key, collection).
      *
      * **Note:** Unlike `_.remove`, this method returns a new array.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} [predicate=_.identity] The function invoked per iteration.
      * @returns {Array} Returns the new filtered array.
      * @see _.reject
      * @example
      *
      * var users = [
      *   { 'user': 'barney', 'age': 36, 'active': true },
      *   { 'user': 'fred',   'age': 40, 'active': false }
      * ];
      *
      * _.filter(users, function(o) { return !o.active; });
      * // => objects for ['fred']
      *
      * // The `_.matches` iteratee shorthand.
      * _.filter(users, { 'age': 36, 'active': true });
      * // => objects for ['barney']
      *
      * // The `_.matchesProperty` iteratee shorthand.
      * _.filter(users, ['active', false]);
      * // => objects for ['fred']
      *
      * // The `_.property` iteratee shorthand.
      * _.filter(users, 'active');
      * // => objects for ['barney']
      *
      * // Combining several predicates using `_.overEvery` or `_.overSome`.
      * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]]));
      * // => objects for ['fred', 'barney']
      */
     function filter(collection, predicate) {
       var func = isArray(collection) ? arrayFilter : baseFilter;
       return func(collection, getIteratee(predicate, 3));
     }
 
     /**
      * Iterates over elements of `collection`, returning the first element
      * `predicate` returns truthy for. The predicate is invoked with three
      * arguments: (value, index|key, collection).
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Collection
      * @param {Array|Object} collection The collection to inspect.
      * @param {Function} [predicate=_.identity] The function invoked per iteration.
      * @param {number} [fromIndex=0] The index to search from.
      * @returns {*} Returns the matched element, else `undefined`.
      * @example
      *
      * var users = [
      *   { 'user': 'barney',  'age': 36, 'active': true },
      *   { 'user': 'fred',    'age': 40, 'active': false },
      *   { 'user': 'pebbles', 'age': 1,  'active': true }
      * ];
      *
      * _.find(users, function(o) { return o.age < 40; });
      * // => object for 'barney'
      *
      * // The `_.matches` iteratee shorthand.
      * _.find(users, { 'age': 1, 'active': true });
      * // => object for 'pebbles'
      *
      * // The `_.matchesProperty` iteratee shorthand.
      * _.find(users, ['active', false]);
      * // => object for 'fred'
      *
      * // The `_.property` iteratee shorthand.
      * _.find(users, 'active');
      * // => object for 'barney'
      */
     var find = createFind(findIndex);
 
     /**
      * This method is like `_.find` except that it iterates over elements of
      * `collection` from right to left.
      *
      * @static
      * @memberOf _
      * @since 2.0.0
      * @category Collection
      * @param {Array|Object} collection The collection to inspect.
      * @param {Function} [predicate=_.identity] The function invoked per iteration.
      * @param {number} [fromIndex=collection.length-1] The index to search from.
      * @returns {*} Returns the matched element, else `undefined`.
      * @example
      *
      * _.findLast([1, 2, 3, 4], function(n) {
      *   return n % 2 == 1;
      * });
      * // => 3
      */
     var findLast = createFind(findLastIndex);
 
     /**
      * Creates a flattened array of values by running each element in `collection`
      * thru `iteratee` and flattening the mapped results. The iteratee is invoked
      * with three arguments: (value, index|key, collection).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} [iteratee=_.identity] The function invoked per iteration.
      * @returns {Array} Returns the new flattened array.
      * @example
      *
      * function duplicate(n) {
      *   return [n, n];
      * }
      *
      * _.flatMap([1, 2], duplicate);
      * // => [1, 1, 2, 2]
      */
     function flatMap(collection, iteratee) {
       return baseFlatten(map(collection, iteratee), 1);
     }
 
     /**
      * This method is like `_.flatMap` except that it recursively flattens the
      * mapped results.
      *
      * @static
      * @memberOf _
      * @since 4.7.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} [iteratee=_.identity] The function invoked per iteration.
      * @returns {Array} Returns the new flattened array.
      * @example
      *
      * function duplicate(n) {
      *   return [[[n, n]]];
      * }
      *
      * _.flatMapDeep([1, 2], duplicate);
      * // => [1, 1, 2, 2]
      */
     function flatMapDeep(collection, iteratee) {
       return baseFlatten(map(collection, iteratee), INFINITY);
     }
 
     /**
      * This method is like `_.flatMap` except that it recursively flattens the
      * mapped results up to `depth` times.
      *
      * @static
      * @memberOf _
      * @since 4.7.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} [iteratee=_.identity] The function invoked per iteration.
      * @param {number} [depth=1] The maximum recursion depth.
      * @returns {Array} Returns the new flattened array.
      * @example
      *
      * function duplicate(n) {
      *   return [[[n, n]]];
      * }
      *
      * _.flatMapDepth([1, 2], duplicate, 2);
      * // => [[1, 1], [2, 2]]
      */
     function flatMapDepth(collection, iteratee, depth) {
       depth = depth === undefined ? 1 : toInteger(depth);
       return baseFlatten(map(collection, iteratee), depth);
     }
 
     /**
      * Iterates over elements of `collection` and invokes `iteratee` for each element.
      * The iteratee is invoked with three arguments: (value, index|key, collection).
      * Iteratee functions may exit iteration early by explicitly returning `false`.
      *
      * **Note:** As with other "Collections" methods, objects with a "length"
      * property are iterated like arrays. To avoid this behavior use `_.forIn`
      * or `_.forOwn` for object iteration.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @alias each
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} [iteratee=_.identity] The function invoked per iteration.
      * @returns {Array|Object} Returns `collection`.
      * @see _.forEachRight
      * @example
      *
      * _.forEach([1, 2], function(value) {
      *   console.log(value);
      * });
      * // => Logs `1` then `2`.
      *
      * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {
      *   console.log(key);
      * });
      * // => Logs 'a' then 'b' (iteration order is not guaranteed).
      */
     function forEach(collection, iteratee) {
       var func = isArray(collection) ? arrayEach : baseEach;
       return func(collection, getIteratee(iteratee, 3));
     }
 
     /**
      * This method is like `_.forEach` except that it iterates over elements of
      * `collection` from right to left.
      *
      * @static
      * @memberOf _
      * @since 2.0.0
      * @alias eachRight
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} [iteratee=_.identity] The function invoked per iteration.
      * @returns {Array|Object} Returns `collection`.
      * @see _.forEach
      * @example
      *
      * _.forEachRight([1, 2], function(value) {
      *   console.log(value);
      * });
      * // => Logs `2` then `1`.
      */
     function forEachRight(collection, iteratee) {
       var func = isArray(collection) ? arrayEachRight : baseEachRight;
       return func(collection, getIteratee(iteratee, 3));
     }
 
     /**
      * Creates an object composed of keys generated from the results of running
      * each element of `collection` thru `iteratee`. The order of grouped values
      * is determined by the order they occur in `collection`. The corresponding
      * value of each key is an array of elements responsible for generating the
      * key. The iteratee is invoked with one argument: (value).
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
      * @returns {Object} Returns the composed aggregate object.
      * @example
      *
      * _.groupBy([6.1, 4.2, 6.3], Math.floor);
      * // => { '4': [4.2], '6': [6.1, 6.3] }
      *
      * // The `_.property` iteratee shorthand.
      * _.groupBy(['one', 'two', 'three'], 'length');
      * // => { '3': ['one', 'two'], '5': ['three'] }
      */
     var groupBy = createAggregator(function(result, value, key) {
       if (hasOwnProperty.call(result, key)) {
         result[key].push(value);
       } else {
         baseAssignValue(result, key, [value]);
       }
     });
 
     /**
      * Checks if `value` is in `collection`. If `collection` is a string, it's
      * checked for a substring of `value`, otherwise
      * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
      * is used for equality comparisons. If `fromIndex` is negative, it's used as
      * the offset from the end of `collection`.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Collection
      * @param {Array|Object|string} collection The collection to inspect.
      * @param {*} value The value to search for.
      * @param {number} [fromIndex=0] The index to search from.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
      * @returns {boolean} Returns `true` if `value` is found, else `false`.
      * @example
      *
      * _.includes([1, 2, 3], 1);
      * // => true
      *
      * _.includes([1, 2, 3], 1, 2);
      * // => false
      *
      * _.includes({ 'a': 1, 'b': 2 }, 1);
      * // => true
      *
      * _.includes('abcd', 'bc');
      * // => true
      */
     function includes(collection, value, fromIndex, guard) {
       collection = isArrayLike(collection) ? collection : values(collection);
       fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;
 
       var length = collection.length;
       if (fromIndex < 0) {
         fromIndex = nativeMax(length + fromIndex, 0);
       }
       return isString(collection)
         ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)
         : (!!length && baseIndexOf(collection, value, fromIndex) > -1);
     }
 
     /**
      * Invokes the method at `path` of each element in `collection`, returning
      * an array of the results of each invoked method. Any additional arguments
      * are provided to each invoked method. If `path` is a function, it's invoked
      * for, and `this` bound to, each element in `collection`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Array|Function|string} path The path of the method to invoke or
      *  the function invoked per iteration.
      * @param {...*} [args] The arguments to invoke each method with.
      * @returns {Array} Returns the array of results.
      * @example
      *
      * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');
      * // => [[1, 5, 7], [1, 2, 3]]
      *
      * _.invokeMap([123, 456], String.prototype.split, '');
      * // => [['1', '2', '3'], ['4', '5', '6']]
      */
     var invokeMap = baseRest(function(collection, path, args) {
       var index = -1,
           isFunc = typeof path == 'function',
           result = isArrayLike(collection) ? Array(collection.length) : [];
 
       baseEach(collection, function(value) {
         result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);
       });
       return result;
     });
 
     /**
      * Creates an object composed of keys generated from the results of running
      * each element of `collection` thru `iteratee`. The corresponding value of
      * each key is the last element responsible for generating the key. The
      * iteratee is invoked with one argument: (value).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
      * @returns {Object} Returns the composed aggregate object.
      * @example
      *
      * var array = [
      *   { 'dir': 'left', 'code': 97 },
      *   { 'dir': 'right', 'code': 100 }
      * ];
      *
      * _.keyBy(array, function(o) {
      *   return String.fromCharCode(o.code);
      * });
      * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
      *
      * _.keyBy(array, 'dir');
      * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
      */
     var keyBy = createAggregator(function(result, value, key) {
       baseAssignValue(result, key, value);
     });
 
     /**
      * Creates an array of values by running each element in `collection` thru
      * `iteratee`. The iteratee is invoked with three arguments:
      * (value, index|key, collection).
      *
      * Many lodash methods are guarded to work as iteratees for methods like
      * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.
      *
      * The guarded methods are:
      * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,
      * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,
      * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,
      * `template`, `trim`, `trimEnd`, `trimStart`, and `words`
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} [iteratee=_.identity] The function invoked per iteration.
      * @returns {Array} Returns the new mapped array.
      * @example
      *
      * function square(n) {
      *   return n * n;
      * }
      *
      * _.map([4, 8], square);
      * // => [16, 64]
      *
      * _.map({ 'a': 4, 'b': 8 }, square);
      * // => [16, 64] (iteration order is not guaranteed)
      *
      * var users = [
      *   { 'user': 'barney' },
      *   { 'user': 'fred' }
      * ];
      *
      * // The `_.property` iteratee shorthand.
      * _.map(users, 'user');
      * // => ['barney', 'fred']
      */
     function map(collection, iteratee) {
       var func = isArray(collection) ? arrayMap : baseMap;
       return func(collection, getIteratee(iteratee, 3));
     }
 
     /**
      * This method is like `_.sortBy` except that it allows specifying the sort
      * orders of the iteratees to sort by. If `orders` is unspecified, all values
      * are sorted in ascending order. Otherwise, specify an order of "desc" for
      * descending or "asc" for ascending sort order of corresponding values.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]
      *  The iteratees to sort by.
      * @param {string[]} [orders] The sort orders of `iteratees`.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
      * @returns {Array} Returns the new sorted array.
      * @example
      *
      * var users = [
      *   { 'user': 'fred',   'age': 48 },
      *   { 'user': 'barney', 'age': 34 },
      *   { 'user': 'fred',   'age': 40 },
      *   { 'user': 'barney', 'age': 36 }
      * ];
      *
      * // Sort by `user` in ascending order and by `age` in descending order.
      * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);
      * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
      */
     function orderBy(collection, iteratees, orders, guard) {
       if (collection == null) {
         return [];
       }
       if (!isArray(iteratees)) {
         iteratees = iteratees == null ? [] : [iteratees];
       }
       orders = guard ? undefined : orders;
       if (!isArray(orders)) {
         orders = orders == null ? [] : [orders];
       }
       return baseOrderBy(collection, iteratees, orders);
     }
 
     /**
      * Creates an array of elements split into two groups, the first of which
      * contains elements `predicate` returns truthy for, the second of which
      * contains elements `predicate` returns falsey for. The predicate is
      * invoked with one argument: (value).
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} [predicate=_.identity] The function invoked per iteration.
      * @returns {Array} Returns the array of grouped elements.
      * @example
      *
      * var users = [
      *   { 'user': 'barney',  'age': 36, 'active': false },
      *   { 'user': 'fred',    'age': 40, 'active': true },
      *   { 'user': 'pebbles', 'age': 1,  'active': false }
      * ];
      *
      * _.partition(users, function(o) { return o.active; });
      * // => objects for [['fred'], ['barney', 'pebbles']]
      *
      * // The `_.matches` iteratee shorthand.
      * _.partition(users, { 'age': 1, 'active': false });
      * // => objects for [['pebbles'], ['barney', 'fred']]
      *
      * // The `_.matchesProperty` iteratee shorthand.
      * _.partition(users, ['active', false]);
      * // => objects for [['barney', 'pebbles'], ['fred']]
      *
      * // The `_.property` iteratee shorthand.
      * _.partition(users, 'active');
      * // => objects for [['fred'], ['barney', 'pebbles']]
      */
     var partition = createAggregator(function(result, value, key) {
       result[key ? 0 : 1].push(value);
     }, function() { return [[], []]; });
 
     /**
      * Reduces `collection` to a value which is the accumulated result of running
      * each element in `collection` thru `iteratee`, where each successive
      * invocation is supplied the return value of the previous. If `accumulator`
      * is not given, the first element of `collection` is used as the initial
      * value. The iteratee is invoked with four arguments:
      * (accumulator, value, index|key, collection).
      *
      * Many lodash methods are guarded to work as iteratees for methods like
      * `_.reduce`, `_.reduceRight`, and `_.transform`.
      *
      * The guarded methods are:
      * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,
      * and `sortBy`
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} [iteratee=_.identity] The function invoked per iteration.
      * @param {*} [accumulator] The initial value.
      * @returns {*} Returns the accumulated value.
      * @see _.reduceRight
      * @example
      *
      * _.reduce([1, 2], function(sum, n) {
      *   return sum + n;
      * }, 0);
      * // => 3
      *
      * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
      *   (result[value] || (result[value] = [])).push(key);
      *   return result;
      * }, {});
      * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)
      */
     function reduce(collection, iteratee, accumulator) {
       var func = isArray(collection) ? arrayReduce : baseReduce,
           initAccum = arguments.length < 3;
 
       return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);
     }
 
     /**
      * This method is like `_.reduce` except that it iterates over elements of
      * `collection` from right to left.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} [iteratee=_.identity] The function invoked per iteration.
      * @param {*} [accumulator] The initial value.
      * @returns {*} Returns the accumulated value.
      * @see _.reduce
      * @example
      *
      * var array = [[0, 1], [2, 3], [4, 5]];
      *
      * _.reduceRight(array, function(flattened, other) {
      *   return flattened.concat(other);
      * }, []);
      * // => [4, 5, 2, 3, 0, 1]
      */
     function reduceRight(collection, iteratee, accumulator) {
       var func = isArray(collection) ? arrayReduceRight : baseReduce,
           initAccum = arguments.length < 3;
 
       return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);
     }
 
     /**
      * The opposite of `_.filter`; this method returns the elements of `collection`
      * that `predicate` does **not** return truthy for.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} [predicate=_.identity] The function invoked per iteration.
      * @returns {Array} Returns the new filtered array.
      * @see _.filter
      * @example
      *
      * var users = [
      *   { 'user': 'barney', 'age': 36, 'active': false },
      *   { 'user': 'fred',   'age': 40, 'active': true }
      * ];
      *
      * _.reject(users, function(o) { return !o.active; });
      * // => objects for ['fred']
      *
      * // The `_.matches` iteratee shorthand.
      * _.reject(users, { 'age': 40, 'active': true });
      * // => objects for ['barney']
      *
      * // The `_.matchesProperty` iteratee shorthand.
      * _.reject(users, ['active', false]);
      * // => objects for ['fred']
      *
      * // The `_.property` iteratee shorthand.
      * _.reject(users, 'active');
      * // => objects for ['barney']
      */
     function reject(collection, predicate) {
       var func = isArray(collection) ? arrayFilter : baseFilter;
       return func(collection, negate(getIteratee(predicate, 3)));
     }
 
     /**
      * Gets a random element from `collection`.
      *
      * @static
      * @memberOf _
      * @since 2.0.0
      * @category Collection
      * @param {Array|Object} collection The collection to sample.
      * @returns {*} Returns the random element.
      * @example
      *
      * _.sample([1, 2, 3, 4]);
      * // => 2
      */
     function sample(collection) {
       var func = isArray(collection) ? arraySample : baseSample;
       return func(collection);
     }
 
     /**
      * Gets `n` random elements at unique keys from `collection` up to the
      * size of `collection`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Collection
      * @param {Array|Object} collection The collection to sample.
      * @param {number} [n=1] The number of elements to sample.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {Array} Returns the random elements.
      * @example
      *
      * _.sampleSize([1, 2, 3], 2);
      * // => [3, 1]
      *
      * _.sampleSize([1, 2, 3], 4);
      * // => [2, 3, 1]
      */
     function sampleSize(collection, n, guard) {
       if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {
         n = 1;
       } else {
         n = toInteger(n);
       }
       var func = isArray(collection) ? arraySampleSize : baseSampleSize;
       return func(collection, n);
     }
 
     /**
      * Creates an array of shuffled values, using a version of the
      * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Collection
      * @param {Array|Object} collection The collection to shuffle.
      * @returns {Array} Returns the new shuffled array.
      * @example
      *
      * _.shuffle([1, 2, 3, 4]);
      * // => [4, 1, 3, 2]
      */
     function shuffle(collection) {
       var func = isArray(collection) ? arrayShuffle : baseShuffle;
       return func(collection);
     }
 
     /**
      * Gets the size of `collection` by returning its length for array-like
      * values or the number of own enumerable string keyed properties for objects.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Collection
      * @param {Array|Object|string} collection The collection to inspect.
      * @returns {number} Returns the collection size.
      * @example
      *
      * _.size([1, 2, 3]);
      * // => 3
      *
      * _.size({ 'a': 1, 'b': 2 });
      * // => 2
      *
      * _.size('pebbles');
      * // => 7
      */
     function size(collection) {
       if (collection == null) {
         return 0;
       }
       if (isArrayLike(collection)) {
         return isString(collection) ? stringSize(collection) : collection.length;
       }
       var tag = getTag(collection);
       if (tag == mapTag || tag == setTag) {
         return collection.size;
       }
       return baseKeys(collection).length;
     }
 
     /**
      * Checks if `predicate` returns truthy for **any** element of `collection`.
      * Iteration is stopped once `predicate` returns truthy. The predicate is
      * invoked with three arguments: (value, index|key, collection).
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {Function} [predicate=_.identity] The function invoked per iteration.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {boolean} Returns `true` if any element passes the predicate check,
      *  else `false`.
      * @example
      *
      * _.some([null, 0, 'yes', false], Boolean);
      * // => true
      *
      * var users = [
      *   { 'user': 'barney', 'active': true },
      *   { 'user': 'fred',   'active': false }
      * ];
      *
      * // The `_.matches` iteratee shorthand.
      * _.some(users, { 'user': 'barney', 'active': false });
      * // => false
      *
      * // The `_.matchesProperty` iteratee shorthand.
      * _.some(users, ['active', false]);
      * // => true
      *
      * // The `_.property` iteratee shorthand.
      * _.some(users, 'active');
      * // => true
      */
     function some(collection, predicate, guard) {
       var func = isArray(collection) ? arraySome : baseSome;
       if (guard && isIterateeCall(collection, predicate, guard)) {
         predicate = undefined;
       }
       return func(collection, getIteratee(predicate, 3));
     }
 
     /**
      * Creates an array of elements, sorted in ascending order by the results of
      * running each element in a collection thru each iteratee. This method
      * performs a stable sort, that is, it preserves the original sort order of
      * equal elements. The iteratees are invoked with one argument: (value).
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Collection
      * @param {Array|Object} collection The collection to iterate over.
      * @param {...(Function|Function[])} [iteratees=[_.identity]]
      *  The iteratees to sort by.
      * @returns {Array} Returns the new sorted array.
      * @example
      *
      * var users = [
      *   { 'user': 'fred',   'age': 48 },
      *   { 'user': 'barney', 'age': 36 },
      *   { 'user': 'fred',   'age': 30 },
      *   { 'user': 'barney', 'age': 34 }
      * ];
      *
      * _.sortBy(users, [function(o) { return o.user; }]);
      * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 30]]
      *
      * _.sortBy(users, ['user', 'age']);
      * // => objects for [['barney', 34], ['barney', 36], ['fred', 30], ['fred', 48]]
      */
     var sortBy = baseRest(function(collection, iteratees) {
       if (collection == null) {
         return [];
       }
       var length = iteratees.length;
       if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {
         iteratees = [];
       } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {
         iteratees = [iteratees[0]];
       }
       return baseOrderBy(collection, baseFlatten(iteratees, 1), []);
     });
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Gets the timestamp of the number of milliseconds that have elapsed since
      * the Unix epoch (1 January 1970 00:00:00 UTC).
      *
      * @static
      * @memberOf _
      * @since 2.4.0
      * @category Date
      * @returns {number} Returns the timestamp.
      * @example
      *
      * _.defer(function(stamp) {
      *   console.log(_.now() - stamp);
      * }, _.now());
      * // => Logs the number of milliseconds it took for the deferred invocation.
      */
     var now = ctxNow || function() {
       return root.Date.now();
     };
 
     /*------------------------------------------------------------------------*/
 
     /**
      * The opposite of `_.before`; this method creates a function that invokes
      * `func` once it's called `n` or more times.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Function
      * @param {number} n The number of calls before `func` is invoked.
      * @param {Function} func The function to restrict.
      * @returns {Function} Returns the new restricted function.
      * @example
      *
      * var saves = ['profile', 'settings'];
      *
      * var done = _.after(saves.length, function() {
      *   console.log('done saving!');
      * });
      *
      * _.forEach(saves, function(type) {
      *   asyncSave({ 'type': type, 'complete': done });
      * });
      * // => Logs 'done saving!' after the two async saves have completed.
      */
     function after(n, func) {
       if (typeof func != 'function') {
         throw new TypeError(FUNC_ERROR_TEXT);
       }
       n = toInteger(n);
       return function() {
         if (--n < 1) {
           return func.apply(this, arguments);
         }
       };
     }
 
     /**
      * Creates a function that invokes `func`, with up to `n` arguments,
      * ignoring any additional arguments.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Function
      * @param {Function} func The function to cap arguments for.
      * @param {number} [n=func.length] The arity cap.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {Function} Returns the new capped function.
      * @example
      *
      * _.map(['6', '8', '10'], _.ary(parseInt, 1));
      * // => [6, 8, 10]
      */
     function ary(func, n, guard) {
       n = guard ? undefined : n;
       n = (func && n == null) ? func.length : n;
       return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);
     }
 
     /**
      * Creates a function that invokes `func`, with the `this` binding and arguments
      * of the created function, while it's called less than `n` times. Subsequent
      * calls to the created function return the result of the last `func` invocation.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Function
      * @param {number} n The number of calls at which `func` is no longer invoked.
      * @param {Function} func The function to restrict.
      * @returns {Function} Returns the new restricted function.
      * @example
      *
      * jQuery(element).on('click', _.before(5, addContactToList));
      * // => Allows adding up to 4 contacts to the list.
      */
     function before(n, func) {
       var result;
       if (typeof func != 'function') {
         throw new TypeError(FUNC_ERROR_TEXT);
       }
       n = toInteger(n);
       return function() {
         if (--n > 0) {
           result = func.apply(this, arguments);
         }
         if (n <= 1) {
           func = undefined;
         }
         return result;
       };
     }
 
     /**
      * Creates a function that invokes `func` with the `this` binding of `thisArg`
      * and `partials` prepended to the arguments it receives.
      *
      * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,
      * may be used as a placeholder for partially applied arguments.
      *
      * **Note:** Unlike native `Function#bind`, this method doesn't set the "length"
      * property of bound functions.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Function
      * @param {Function} func The function to bind.
      * @param {*} thisArg The `this` binding of `func`.
      * @param {...*} [partials] The arguments to be partially applied.
      * @returns {Function} Returns the new bound function.
      * @example
      *
      * function greet(greeting, punctuation) {
      *   return greeting + ' ' + this.user + punctuation;
      * }
      *
      * var object = { 'user': 'fred' };
      *
      * var bound = _.bind(greet, object, 'hi');
      * bound('!');
      * // => 'hi fred!'
      *
      * // Bound with placeholders.
      * var bound = _.bind(greet, object, _, '!');
      * bound('hi');
      * // => 'hi fred!'
      */
     var bind = baseRest(function(func, thisArg, partials) {
       var bitmask = WRAP_BIND_FLAG;
       if (partials.length) {
         var holders = replaceHolders(partials, getHolder(bind));
         bitmask |= WRAP_PARTIAL_FLAG;
       }
       return createWrap(func, bitmask, thisArg, partials, holders);
     });
 
     /**
      * Creates a function that invokes the method at `object[key]` with `partials`
      * prepended to the arguments it receives.
      *
      * This method differs from `_.bind` by allowing bound functions to reference
      * methods that may be redefined or don't yet exist. See
      * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)
      * for more details.
      *
      * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic
      * builds, may be used as a placeholder for partially applied arguments.
      *
      * @static
      * @memberOf _
      * @since 0.10.0
      * @category Function
      * @param {Object} object The object to invoke the method on.
      * @param {string} key The key of the method.
      * @param {...*} [partials] The arguments to be partially applied.
      * @returns {Function} Returns the new bound function.
      * @example
      *
      * var object = {
      *   'user': 'fred',
      *   'greet': function(greeting, punctuation) {
      *     return greeting + ' ' + this.user + punctuation;
      *   }
      * };
      *
      * var bound = _.bindKey(object, 'greet', 'hi');
      * bound('!');
      * // => 'hi fred!'
      *
      * object.greet = function(greeting, punctuation) {
      *   return greeting + 'ya ' + this.user + punctuation;
      * };
      *
      * bound('!');
      * // => 'hiya fred!'
      *
      * // Bound with placeholders.
      * var bound = _.bindKey(object, 'greet', _, '!');
      * bound('hi');
      * // => 'hiya fred!'
      */
     var bindKey = baseRest(function(object, key, partials) {
       var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;
       if (partials.length) {
         var holders = replaceHolders(partials, getHolder(bindKey));
         bitmask |= WRAP_PARTIAL_FLAG;
       }
       return createWrap(key, bitmask, object, partials, holders);
     });
 
     /**
      * Creates a function that accepts arguments of `func` and either invokes
      * `func` returning its result, if at least `arity` number of arguments have
      * been provided, or returns a function that accepts the remaining `func`
      * arguments, and so on. The arity of `func` may be specified if `func.length`
      * is not sufficient.
      *
      * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,
      * may be used as a placeholder for provided arguments.
      *
      * **Note:** This method doesn't set the "length" property of curried functions.
      *
      * @static
      * @memberOf _
      * @since 2.0.0
      * @category Function
      * @param {Function} func The function to curry.
      * @param {number} [arity=func.length] The arity of `func`.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {Function} Returns the new curried function.
      * @example
      *
      * var abc = function(a, b, c) {
      *   return [a, b, c];
      * };
      *
      * var curried = _.curry(abc);
      *
      * curried(1)(2)(3);
      * // => [1, 2, 3]
      *
      * curried(1, 2)(3);
      * // => [1, 2, 3]
      *
      * curried(1, 2, 3);
      * // => [1, 2, 3]
      *
      * // Curried with placeholders.
      * curried(1)(_, 3)(2);
      * // => [1, 2, 3]
      */
     function curry(func, arity, guard) {
       arity = guard ? undefined : arity;
       var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
       result.placeholder = curry.placeholder;
       return result;
     }
 
     /**
      * This method is like `_.curry` except that arguments are applied to `func`
      * in the manner of `_.partialRight` instead of `_.partial`.
      *
      * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic
      * builds, may be used as a placeholder for provided arguments.
      *
      * **Note:** This method doesn't set the "length" property of curried functions.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Function
      * @param {Function} func The function to curry.
      * @param {number} [arity=func.length] The arity of `func`.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {Function} Returns the new curried function.
      * @example
      *
      * var abc = function(a, b, c) {
      *   return [a, b, c];
      * };
      *
      * var curried = _.curryRight(abc);
      *
      * curried(3)(2)(1);
      * // => [1, 2, 3]
      *
      * curried(2, 3)(1);
      * // => [1, 2, 3]
      *
      * curried(1, 2, 3);
      * // => [1, 2, 3]
      *
      * // Curried with placeholders.
      * curried(3)(1, _)(2);
      * // => [1, 2, 3]
      */
     function curryRight(func, arity, guard) {
       arity = guard ? undefined : arity;
       var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
       result.placeholder = curryRight.placeholder;
       return result;
     }
 
     /**
      * Creates a debounced function that delays invoking `func` until after `wait`
      * milliseconds have elapsed since the last time the debounced function was
      * invoked. The debounced function comes with a `cancel` method to cancel
      * delayed `func` invocations and a `flush` method to immediately invoke them.
      * Provide `options` to indicate whether `func` should be invoked on the
      * leading and/or trailing edge of the `wait` timeout. The `func` is invoked
      * with the last arguments provided to the debounced function. Subsequent
      * calls to the debounced function return the result of the last `func`
      * invocation.
      *
      * **Note:** If `leading` and `trailing` options are `true`, `func` is
      * invoked on the trailing edge of the timeout only if the debounced function
      * is invoked more than once during the `wait` timeout.
      *
      * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
      * until to the next tick, similar to `setTimeout` with a timeout of `0`.
      *
      * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
      * for details over the differences between `_.debounce` and `_.throttle`.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Function
      * @param {Function} func The function to debounce.
      * @param {number} [wait=0] The number of milliseconds to delay.
      * @param {Object} [options={}] The options object.
      * @param {boolean} [options.leading=false]
      *  Specify invoking on the leading edge of the timeout.
      * @param {number} [options.maxWait]
      *  The maximum time `func` is allowed to be delayed before it's invoked.
      * @param {boolean} [options.trailing=true]
      *  Specify invoking on the trailing edge of the timeout.
      * @returns {Function} Returns the new debounced function.
      * @example
      *
      * // Avoid costly calculations while the window size is in flux.
      * jQuery(window).on('resize', _.debounce(calculateLayout, 150));
      *
      * // Invoke `sendMail` when clicked, debouncing subsequent calls.
      * jQuery(element).on('click', _.debounce(sendMail, 300, {
      *   'leading': true,
      *   'trailing': false
      * }));
      *
      * // Ensure `batchLog` is invoked once after 1 second of debounced calls.
      * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });
      * var source = new EventSource('/stream');
      * jQuery(source).on('message', debounced);
      *
      * // Cancel the trailing debounced invocation.
      * jQuery(window).on('popstate', debounced.cancel);
      */
     function debounce(func, wait, options) {
       var lastArgs,
           lastThis,
           maxWait,
           result,
           timerId,
           lastCallTime,
           lastInvokeTime = 0,
           leading = false,
           maxing = false,
           trailing = true;
 
       if (typeof func != 'function') {
         throw new TypeError(FUNC_ERROR_TEXT);
       }
       wait = toNumber(wait) || 0;
       if (isObject(options)) {
         leading = !!options.leading;
         maxing = 'maxWait' in options;
         maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;
         trailing = 'trailing' in options ? !!options.trailing : trailing;
       }
 
       function invokeFunc(time) {
         var args = lastArgs,
             thisArg = lastThis;
 
         lastArgs = lastThis = undefined;
         lastInvokeTime = time;
         result = func.apply(thisArg, args);
         return result;
       }
 
       function leadingEdge(time) {
         // Reset any `maxWait` timer.
         lastInvokeTime = time;
         // Start the timer for the trailing edge.
         timerId = setTimeout(timerExpired, wait);
         // Invoke the leading edge.
         return leading ? invokeFunc(time) : result;
       }
 
       function remainingWait(time) {
         var timeSinceLastCall = time - lastCallTime,
             timeSinceLastInvoke = time - lastInvokeTime,
             timeWaiting = wait - timeSinceLastCall;
 
         return maxing
           ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)
           : timeWaiting;
       }
 
       function shouldInvoke(time) {
         var timeSinceLastCall = time - lastCallTime,
             timeSinceLastInvoke = time - lastInvokeTime;
 
         // Either this is the first call, activity has stopped and we're at the
         // trailing edge, the system time has gone backwards and we're treating
         // it as the trailing edge, or we've hit the `maxWait` limit.
         return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||
           (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));
       }
 
       function timerExpired() {
         var time = now();
         if (shouldInvoke(time)) {
           return trailingEdge(time);
         }
         // Restart the timer.
         timerId = setTimeout(timerExpired, remainingWait(time));
       }
 
       function trailingEdge(time) {
         timerId = undefined;
 
         // Only invoke if we have `lastArgs` which means `func` has been
         // debounced at least once.
         if (trailing && lastArgs) {
           return invokeFunc(time);
         }
         lastArgs = lastThis = undefined;
         return result;
       }
 
       function cancel() {
         if (timerId !== undefined) {
           clearTimeout(timerId);
         }
         lastInvokeTime = 0;
         lastArgs = lastCallTime = lastThis = timerId = undefined;
       }
 
       function flush() {
         return timerId === undefined ? result : trailingEdge(now());
       }
 
       function debounced() {
         var time = now(),
             isInvoking = shouldInvoke(time);
 
         lastArgs = arguments;
         lastThis = this;
         lastCallTime = time;
 
         if (isInvoking) {
           if (timerId === undefined) {
             return leadingEdge(lastCallTime);
           }
           if (maxing) {
             // Handle invocations in a tight loop.
             clearTimeout(timerId);
             timerId = setTimeout(timerExpired, wait);
             return invokeFunc(lastCallTime);
           }
         }
         if (timerId === undefined) {
           timerId = setTimeout(timerExpired, wait);
         }
         return result;
       }
       debounced.cancel = cancel;
       debounced.flush = flush;
       return debounced;
     }
 
     /**
      * Defers invoking the `func` until the current call stack has cleared. Any
      * additional arguments are provided to `func` when it's invoked.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Function
      * @param {Function} func The function to defer.
      * @param {...*} [args] The arguments to invoke `func` with.
      * @returns {number} Returns the timer id.
      * @example
      *
      * _.defer(function(text) {
      *   console.log(text);
      * }, 'deferred');
      * // => Logs 'deferred' after one millisecond.
      */
     var defer = baseRest(function(func, args) {
       return baseDelay(func, 1, args);
     });
 
     /**
      * Invokes `func` after `wait` milliseconds. Any additional arguments are
      * provided to `func` when it's invoked.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Function
      * @param {Function} func The function to delay.
      * @param {number} wait The number of milliseconds to delay invocation.
      * @param {...*} [args] The arguments to invoke `func` with.
      * @returns {number} Returns the timer id.
      * @example
      *
      * _.delay(function(text) {
      *   console.log(text);
      * }, 1000, 'later');
      * // => Logs 'later' after one second.
      */
     var delay = baseRest(function(func, wait, args) {
       return baseDelay(func, toNumber(wait) || 0, args);
     });
 
     /**
      * Creates a function that invokes `func` with arguments reversed.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Function
      * @param {Function} func The function to flip arguments for.
      * @returns {Function} Returns the new flipped function.
      * @example
      *
      * var flipped = _.flip(function() {
      *   return _.toArray(arguments);
      * });
      *
      * flipped('a', 'b', 'c', 'd');
      * // => ['d', 'c', 'b', 'a']
      */
     function flip(func) {
       return createWrap(func, WRAP_FLIP_FLAG);
     }
 
     /**
      * Creates a function that memoizes the result of `func`. If `resolver` is
      * provided, it determines the cache key for storing the result based on the
      * arguments provided to the memoized function. By default, the first argument
      * provided to the memoized function is used as the map cache key. The `func`
      * is invoked with the `this` binding of the memoized function.
      *
      * **Note:** The cache is exposed as the `cache` property on the memoized
      * function. Its creation may be customized by replacing the `_.memoize.Cache`
      * constructor with one whose instances implement the
      * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)
      * method interface of `clear`, `delete`, `get`, `has`, and `set`.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Function
      * @param {Function} func The function to have its output memoized.
      * @param {Function} [resolver] The function to resolve the cache key.
      * @returns {Function} Returns the new memoized function.
      * @example
      *
      * var object = { 'a': 1, 'b': 2 };
      * var other = { 'c': 3, 'd': 4 };
      *
      * var values = _.memoize(_.values);
      * values(object);
      * // => [1, 2]
      *
      * values(other);
      * // => [3, 4]
      *
      * object.a = 2;
      * values(object);
      * // => [1, 2]
      *
      * // Modify the result cache.
      * values.cache.set(object, ['a', 'b']);
      * values(object);
      * // => ['a', 'b']
      *
      * // Replace `_.memoize.Cache`.
      * _.memoize.Cache = WeakMap;
      */
     function memoize(func, resolver) {
       if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {
         throw new TypeError(FUNC_ERROR_TEXT);
       }
       var memoized = function() {
         var args = arguments,
             key = resolver ? resolver.apply(this, args) : args[0],
             cache = memoized.cache;
 
         if (cache.has(key)) {
           return cache.get(key);
         }
         var result = func.apply(this, args);
         memoized.cache = cache.set(key, result) || cache;
         return result;
       };
       memoized.cache = new (memoize.Cache || MapCache);
       return memoized;
     }
 
     // Expose `MapCache`.
     memoize.Cache = MapCache;
 
     /**
      * Creates a function that negates the result of the predicate `func`. The
      * `func` predicate is invoked with the `this` binding and arguments of the
      * created function.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Function
      * @param {Function} predicate The predicate to negate.
      * @returns {Function} Returns the new negated function.
      * @example
      *
      * function isEven(n) {
      *   return n % 2 == 0;
      * }
      *
      * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));
      * // => [1, 3, 5]
      */
     function negate(predicate) {
       if (typeof predicate != 'function') {
         throw new TypeError(FUNC_ERROR_TEXT);
       }
       return function() {
         var args = arguments;
         switch (args.length) {
           case 0: return !predicate.call(this);
           case 1: return !predicate.call(this, args[0]);
           case 2: return !predicate.call(this, args[0], args[1]);
           case 3: return !predicate.call(this, args[0], args[1], args[2]);
         }
         return !predicate.apply(this, args);
       };
     }
 
     /**
      * Creates a function that is restricted to invoking `func` once. Repeat calls
      * to the function return the value of the first invocation. The `func` is
      * invoked with the `this` binding and arguments of the created function.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Function
      * @param {Function} func The function to restrict.
      * @returns {Function} Returns the new restricted function.
      * @example
      *
      * var initialize = _.once(createApplication);
      * initialize();
      * initialize();
      * // => `createApplication` is invoked once
      */
     function once(func) {
       return before(2, func);
     }
 
     /**
      * Creates a function that invokes `func` with its arguments transformed.
      *
      * @static
      * @since 4.0.0
      * @memberOf _
      * @category Function
      * @param {Function} func The function to wrap.
      * @param {...(Function|Function[])} [transforms=[_.identity]]
      *  The argument transforms.
      * @returns {Function} Returns the new function.
      * @example
      *
      * function doubled(n) {
      *   return n * 2;
      * }
      *
      * function square(n) {
      *   return n * n;
      * }
      *
      * var func = _.overArgs(function(x, y) {
      *   return [x, y];
      * }, [square, doubled]);
      *
      * func(9, 3);
      * // => [81, 6]
      *
      * func(10, 5);
      * // => [100, 10]
      */
     var overArgs = castRest(function(func, transforms) {
       transforms = (transforms.length == 1 && isArray(transforms[0]))
         ? arrayMap(transforms[0], baseUnary(getIteratee()))
         : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));
 
       var funcsLength = transforms.length;
       return baseRest(function(args) {
         var index = -1,
             length = nativeMin(args.length, funcsLength);
 
         while (++index < length) {
           args[index] = transforms[index].call(this, args[index]);
         }
         return apply(func, this, args);
       });
     });
 
     /**
      * Creates a function that invokes `func` with `partials` prepended to the
      * arguments it receives. This method is like `_.bind` except it does **not**
      * alter the `this` binding.
      *
      * The `_.partial.placeholder` value, which defaults to `_` in monolithic
      * builds, may be used as a placeholder for partially applied arguments.
      *
      * **Note:** This method doesn't set the "length" property of partially
      * applied functions.
      *
      * @static
      * @memberOf _
      * @since 0.2.0
      * @category Function
      * @param {Function} func The function to partially apply arguments to.
      * @param {...*} [partials] The arguments to be partially applied.
      * @returns {Function} Returns the new partially applied function.
      * @example
      *
      * function greet(greeting, name) {
      *   return greeting + ' ' + name;
      * }
      *
      * var sayHelloTo = _.partial(greet, 'hello');
      * sayHelloTo('fred');
      * // => 'hello fred'
      *
      * // Partially applied with placeholders.
      * var greetFred = _.partial(greet, _, 'fred');
      * greetFred('hi');
      * // => 'hi fred'
      */
     var partial = baseRest(function(func, partials) {
       var holders = replaceHolders(partials, getHolder(partial));
       return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);
     });
 
     /**
      * This method is like `_.partial` except that partially applied arguments
      * are appended to the arguments it receives.
      *
      * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic
      * builds, may be used as a placeholder for partially applied arguments.
      *
      * **Note:** This method doesn't set the "length" property of partially
      * applied functions.
      *
      * @static
      * @memberOf _
      * @since 1.0.0
      * @category Function
      * @param {Function} func The function to partially apply arguments to.
      * @param {...*} [partials] The arguments to be partially applied.
      * @returns {Function} Returns the new partially applied function.
      * @example
      *
      * function greet(greeting, name) {
      *   return greeting + ' ' + name;
      * }
      *
      * var greetFred = _.partialRight(greet, 'fred');
      * greetFred('hi');
      * // => 'hi fred'
      *
      * // Partially applied with placeholders.
      * var sayHelloTo = _.partialRight(greet, 'hello', _);
      * sayHelloTo('fred');
      * // => 'hello fred'
      */
     var partialRight = baseRest(function(func, partials) {
       var holders = replaceHolders(partials, getHolder(partialRight));
       return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);
     });
 
     /**
      * Creates a function that invokes `func` with arguments arranged according
      * to the specified `indexes` where the argument value at the first index is
      * provided as the first argument, the argument value at the second index is
      * provided as the second argument, and so on.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Function
      * @param {Function} func The function to rearrange arguments for.
      * @param {...(number|number[])} indexes The arranged argument indexes.
      * @returns {Function} Returns the new function.
      * @example
      *
      * var rearged = _.rearg(function(a, b, c) {
      *   return [a, b, c];
      * }, [2, 0, 1]);
      *
      * rearged('b', 'c', 'a')
      * // => ['a', 'b', 'c']
      */
     var rearg = flatRest(function(func, indexes) {
       return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);
     });
 
     /**
      * Creates a function that invokes `func` with the `this` binding of the
      * created function and arguments from `start` and beyond provided as
      * an array.
      *
      * **Note:** This method is based on the
      * [rest parameter](https://mdn.io/rest_parameters).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Function
      * @param {Function} func The function to apply a rest parameter to.
      * @param {number} [start=func.length-1] The start position of the rest parameter.
      * @returns {Function} Returns the new function.
      * @example
      *
      * var say = _.rest(function(what, names) {
      *   return what + ' ' + _.initial(names).join(', ') +
      *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);
      * });
      *
      * say('hello', 'fred', 'barney', 'pebbles');
      * // => 'hello fred, barney, & pebbles'
      */
     function rest(func, start) {
       if (typeof func != 'function') {
         throw new TypeError(FUNC_ERROR_TEXT);
       }
       start = start === undefined ? start : toInteger(start);
       return baseRest(func, start);
     }
 
     /**
      * Creates a function that invokes `func` with the `this` binding of the
      * create function and an array of arguments much like
      * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).
      *
      * **Note:** This method is based on the
      * [spread operator](https://mdn.io/spread_operator).
      *
      * @static
      * @memberOf _
      * @since 3.2.0
      * @category Function
      * @param {Function} func The function to spread arguments over.
      * @param {number} [start=0] The start position of the spread.
      * @returns {Function} Returns the new function.
      * @example
      *
      * var say = _.spread(function(who, what) {
      *   return who + ' says ' + what;
      * });
      *
      * say(['fred', 'hello']);
      * // => 'fred says hello'
      *
      * var numbers = Promise.all([
      *   Promise.resolve(40),
      *   Promise.resolve(36)
      * ]);
      *
      * numbers.then(_.spread(function(x, y) {
      *   return x + y;
      * }));
      * // => a Promise of 76
      */
     function spread(func, start) {
       if (typeof func != 'function') {
         throw new TypeError(FUNC_ERROR_TEXT);
       }
       start = start == null ? 0 : nativeMax(toInteger(start), 0);
       return baseRest(function(args) {
         var array = args[start],
             otherArgs = castSlice(args, 0, start);
 
         if (array) {
           arrayPush(otherArgs, array);
         }
         return apply(func, this, otherArgs);
       });
     }
 
     /**
      * Creates a throttled function that only invokes `func` at most once per
      * every `wait` milliseconds. The throttled function comes with a `cancel`
      * method to cancel delayed `func` invocations and a `flush` method to
      * immediately invoke them. Provide `options` to indicate whether `func`
      * should be invoked on the leading and/or trailing edge of the `wait`
      * timeout. The `func` is invoked with the last arguments provided to the
      * throttled function. Subsequent calls to the throttled function return the
      * result of the last `func` invocation.
      *
      * **Note:** If `leading` and `trailing` options are `true`, `func` is
      * invoked on the trailing edge of the timeout only if the throttled function
      * is invoked more than once during the `wait` timeout.
      *
      * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
      * until to the next tick, similar to `setTimeout` with a timeout of `0`.
      *
      * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
      * for details over the differences between `_.throttle` and `_.debounce`.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Function
      * @param {Function} func The function to throttle.
      * @param {number} [wait=0] The number of milliseconds to throttle invocations to.
      * @param {Object} [options={}] The options object.
      * @param {boolean} [options.leading=true]
      *  Specify invoking on the leading edge of the timeout.
      * @param {boolean} [options.trailing=true]
      *  Specify invoking on the trailing edge of the timeout.
      * @returns {Function} Returns the new throttled function.
      * @example
      *
      * // Avoid excessively updating the position while scrolling.
      * jQuery(window).on('scroll', _.throttle(updatePosition, 100));
      *
      * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.
      * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });
      * jQuery(element).on('click', throttled);
      *
      * // Cancel the trailing throttled invocation.
      * jQuery(window).on('popstate', throttled.cancel);
      */
     function throttle(func, wait, options) {
       var leading = true,
           trailing = true;
 
       if (typeof func != 'function') {
         throw new TypeError(FUNC_ERROR_TEXT);
       }
       if (isObject(options)) {
         leading = 'leading' in options ? !!options.leading : leading;
         trailing = 'trailing' in options ? !!options.trailing : trailing;
       }
       return debounce(func, wait, {
         'leading': leading,
         'maxWait': wait,
         'trailing': trailing
       });
     }
 
     /**
      * Creates a function that accepts up to one argument, ignoring any
      * additional arguments.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Function
      * @param {Function} func The function to cap arguments for.
      * @returns {Function} Returns the new capped function.
      * @example
      *
      * _.map(['6', '8', '10'], _.unary(parseInt));
      * // => [6, 8, 10]
      */
     function unary(func) {
       return ary(func, 1);
     }
 
     /**
      * Creates a function that provides `value` to `wrapper` as its first
      * argument. Any additional arguments provided to the function are appended
      * to those provided to the `wrapper`. The wrapper is invoked with the `this`
      * binding of the created function.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Function
      * @param {*} value The value to wrap.
      * @param {Function} [wrapper=identity] The wrapper function.
      * @returns {Function} Returns the new function.
      * @example
      *
      * var p = _.wrap(_.escape, function(func, text) {
      *   return '<p>' + func(text) + '</p>';
      * });
      *
      * p('fred, barney, & pebbles');
      * // => '<p>fred, barney, &amp; pebbles</p>'
      */
     function wrap(value, wrapper) {
       return partial(castFunction(wrapper), value);
     }
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Casts `value` as an array if it's not one.
      *
      * @static
      * @memberOf _
      * @since 4.4.0
      * @category Lang
      * @param {*} value The value to inspect.
      * @returns {Array} Returns the cast array.
      * @example
      *
      * _.castArray(1);
      * // => [1]
      *
      * _.castArray({ 'a': 1 });
      * // => [{ 'a': 1 }]
      *
      * _.castArray('abc');
      * // => ['abc']
      *
      * _.castArray(null);
      * // => [null]
      *
      * _.castArray(undefined);
      * // => [undefined]
      *
      * _.castArray();
      * // => []
      *
      * var array = [1, 2, 3];
      * console.log(_.castArray(array) === array);
      * // => true
      */
     function castArray() {
       if (!arguments.length) {
         return [];
       }
       var value = arguments[0];
       return isArray(value) ? value : [value];
     }
 
     /**
      * Creates a shallow clone of `value`.
      *
      * **Note:** This method is loosely based on the
      * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)
      * and supports cloning arrays, array buffers, booleans, date objects, maps,
      * numbers, `Object` objects, regexes, sets, strings, symbols, and typed
      * arrays. The own enumerable properties of `arguments` objects are cloned
      * as plain objects. An empty object is returned for uncloneable values such
      * as error objects, functions, DOM nodes, and WeakMaps.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Lang
      * @param {*} value The value to clone.
      * @returns {*} Returns the cloned value.
      * @see _.cloneDeep
      * @example
      *
      * var objects = [{ 'a': 1 }, { 'b': 2 }];
      *
      * var shallow = _.clone(objects);
      * console.log(shallow[0] === objects[0]);
      * // => true
      */
     function clone(value) {
       return baseClone(value, CLONE_SYMBOLS_FLAG);
     }
 
     /**
      * This method is like `_.clone` except that it accepts `customizer` which
      * is invoked to produce the cloned value. If `customizer` returns `undefined`,
      * cloning is handled by the method instead. The `customizer` is invoked with
      * up to four arguments; (value [, index|key, object, stack]).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to clone.
      * @param {Function} [customizer] The function to customize cloning.
      * @returns {*} Returns the cloned value.
      * @see _.cloneDeepWith
      * @example
      *
      * function customizer(value) {
      *   if (_.isElement(value)) {
      *     return value.cloneNode(false);
      *   }
      * }
      *
      * var el = _.cloneWith(document.body, customizer);
      *
      * console.log(el === document.body);
      * // => false
      * console.log(el.nodeName);
      * // => 'BODY'
      * console.log(el.childNodes.length);
      * // => 0
      */
     function cloneWith(value, customizer) {
       customizer = typeof customizer == 'function' ? customizer : undefined;
       return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);
     }
 
     /**
      * This method is like `_.clone` except that it recursively clones `value`.
      *
      * @static
      * @memberOf _
      * @since 1.0.0
      * @category Lang
      * @param {*} value The value to recursively clone.
      * @returns {*} Returns the deep cloned value.
      * @see _.clone
      * @example
      *
      * var objects = [{ 'a': 1 }, { 'b': 2 }];
      *
      * var deep = _.cloneDeep(objects);
      * console.log(deep[0] === objects[0]);
      * // => false
      */
     function cloneDeep(value) {
       return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);
     }
 
     /**
      * This method is like `_.cloneWith` except that it recursively clones `value`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to recursively clone.
      * @param {Function} [customizer] The function to customize cloning.
      * @returns {*} Returns the deep cloned value.
      * @see _.cloneWith
      * @example
      *
      * function customizer(value) {
      *   if (_.isElement(value)) {
      *     return value.cloneNode(true);
      *   }
      * }
      *
      * var el = _.cloneDeepWith(document.body, customizer);
      *
      * console.log(el === document.body);
      * // => false
      * console.log(el.nodeName);
      * // => 'BODY'
      * console.log(el.childNodes.length);
      * // => 20
      */
     function cloneDeepWith(value, customizer) {
       customizer = typeof customizer == 'function' ? customizer : undefined;
       return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);
     }
 
     /**
      * Checks if `object` conforms to `source` by invoking the predicate
      * properties of `source` with the corresponding property values of `object`.
      *
      * **Note:** This method is equivalent to `_.conforms` when `source` is
      * partially applied.
      *
      * @static
      * @memberOf _
      * @since 4.14.0
      * @category Lang
      * @param {Object} object The object to inspect.
      * @param {Object} source The object of property predicates to conform to.
      * @returns {boolean} Returns `true` if `object` conforms, else `false`.
      * @example
      *
      * var object = { 'a': 1, 'b': 2 };
      *
      * _.conformsTo(object, { 'b': function(n) { return n > 1; } });
      * // => true
      *
      * _.conformsTo(object, { 'b': function(n) { return n > 2; } });
      * // => false
      */
     function conformsTo(object, source) {
       return source == null || baseConformsTo(object, source, keys(source));
     }
 
     /**
      * Performs a
      * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
      * comparison between two values to determine if they are equivalent.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to compare.
      * @param {*} other The other value to compare.
      * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
      * @example
      *
      * var object = { 'a': 1 };
      * var other = { 'a': 1 };
      *
      * _.eq(object, object);
      * // => true
      *
      * _.eq(object, other);
      * // => false
      *
      * _.eq('a', 'a');
      * // => true
      *
      * _.eq('a', Object('a'));
      * // => false
      *
      * _.eq(NaN, NaN);
      * // => true
      */
     function eq(value, other) {
       return value === other || (value !== value && other !== other);
     }
 
     /**
      * Checks if `value` is greater than `other`.
      *
      * @static
      * @memberOf _
      * @since 3.9.0
      * @category Lang
      * @param {*} value The value to compare.
      * @param {*} other The other value to compare.
      * @returns {boolean} Returns `true` if `value` is greater than `other`,
      *  else `false`.
      * @see _.lt
      * @example
      *
      * _.gt(3, 1);
      * // => true
      *
      * _.gt(3, 3);
      * // => false
      *
      * _.gt(1, 3);
      * // => false
      */
     var gt = createRelationalOperation(baseGt);
 
     /**
      * Checks if `value` is greater than or equal to `other`.
      *
      * @static
      * @memberOf _
      * @since 3.9.0
      * @category Lang
      * @param {*} value The value to compare.
      * @param {*} other The other value to compare.
      * @returns {boolean} Returns `true` if `value` is greater than or equal to
      *  `other`, else `false`.
      * @see _.lte
      * @example
      *
      * _.gte(3, 1);
      * // => true
      *
      * _.gte(3, 3);
      * // => true
      *
      * _.gte(1, 3);
      * // => false
      */
     var gte = createRelationalOperation(function(value, other) {
       return value >= other;
     });
 
     /**
      * Checks if `value` is likely an `arguments` object.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is an `arguments` object,
      *  else `false`.
      * @example
      *
      * _.isArguments(function() { return arguments; }());
      * // => true
      *
      * _.isArguments([1, 2, 3]);
      * // => false
      */
     var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {
       return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&
         !propertyIsEnumerable.call(value, 'callee');
     };
 
     /**
      * Checks if `value` is classified as an `Array` object.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is an array, else `false`.
      * @example
      *
      * _.isArray([1, 2, 3]);
      * // => true
      *
      * _.isArray(document.body.children);
      * // => false
      *
      * _.isArray('abc');
      * // => false
      *
      * _.isArray(_.noop);
      * // => false
      */
     var isArray = Array.isArray;
 
     /**
      * Checks if `value` is classified as an `ArrayBuffer` object.
      *
      * @static
      * @memberOf _
      * @since 4.3.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
      * @example
      *
      * _.isArrayBuffer(new ArrayBuffer(2));
      * // => true
      *
      * _.isArrayBuffer(new Array(2));
      * // => false
      */
     var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;
 
     /**
      * Checks if `value` is array-like. A value is considered array-like if it's
      * not a function and has a `value.length` that's an integer greater than or
      * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
      * @example
      *
      * _.isArrayLike([1, 2, 3]);
      * // => true
      *
      * _.isArrayLike(document.body.children);
      * // => true
      *
      * _.isArrayLike('abc');
      * // => true
      *
      * _.isArrayLike(_.noop);
      * // => false
      */
     function isArrayLike(value) {
       return value != null && isLength(value.length) && !isFunction(value);
     }
 
     /**
      * This method is like `_.isArrayLike` except that it also checks if `value`
      * is an object.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is an array-like object,
      *  else `false`.
      * @example
      *
      * _.isArrayLikeObject([1, 2, 3]);
      * // => true
      *
      * _.isArrayLikeObject(document.body.children);
      * // => true
      *
      * _.isArrayLikeObject('abc');
      * // => false
      *
      * _.isArrayLikeObject(_.noop);
      * // => false
      */
     function isArrayLikeObject(value) {
       return isObjectLike(value) && isArrayLike(value);
     }
 
     /**
      * Checks if `value` is classified as a boolean primitive or object.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.
      * @example
      *
      * _.isBoolean(false);
      * // => true
      *
      * _.isBoolean(null);
      * // => false
      */
     function isBoolean(value) {
       return value === true || value === false ||
         (isObjectLike(value) && baseGetTag(value) == boolTag);
     }
 
     /**
      * Checks if `value` is a buffer.
      *
      * @static
      * @memberOf _
      * @since 4.3.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
      * @example
      *
      * _.isBuffer(new Buffer(2));
      * // => true
      *
      * _.isBuffer(new Uint8Array(2));
      * // => false
      */
     var isBuffer = nativeIsBuffer || stubFalse;
 
     /**
      * Checks if `value` is classified as a `Date` object.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
      * @example
      *
      * _.isDate(new Date);
      * // => true
      *
      * _.isDate('Mon April 23 2012');
      * // => false
      */
     var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;
 
     /**
      * Checks if `value` is likely a DOM element.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.
      * @example
      *
      * _.isElement(document.body);
      * // => true
      *
      * _.isElement('<body>');
      * // => false
      */
     function isElement(value) {
       return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);
     }
 
     /**
      * Checks if `value` is an empty object, collection, map, or set.
      *
      * Objects are considered empty if they have no own enumerable string keyed
      * properties.
      *
      * Array-like values such as `arguments` objects, arrays, buffers, strings, or
      * jQuery-like collections are considered empty if they have a `length` of `0`.
      * Similarly, maps and sets are considered empty if they have a `size` of `0`.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is empty, else `false`.
      * @example
      *
      * _.isEmpty(null);
      * // => true
      *
      * _.isEmpty(true);
      * // => true
      *
      * _.isEmpty(1);
      * // => true
      *
      * _.isEmpty([1, 2, 3]);
      * // => false
      *
      * _.isEmpty({ 'a': 1 });
      * // => false
      */
     function isEmpty(value) {
       if (value == null) {
         return true;
       }
       if (isArrayLike(value) &&
           (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||
             isBuffer(value) || isTypedArray(value) || isArguments(value))) {
         return !value.length;
       }
       var tag = getTag(value);
       if (tag == mapTag || tag == setTag) {
         return !value.size;
       }
       if (isPrototype(value)) {
         return !baseKeys(value).length;
       }
       for (var key in value) {
         if (hasOwnProperty.call(value, key)) {
           return false;
         }
       }
       return true;
     }
 
     /**
      * Performs a deep comparison between two values to determine if they are
      * equivalent.
      *
      * **Note:** This method supports comparing arrays, array buffers, booleans,
      * date objects, error objects, maps, numbers, `Object` objects, regexes,
      * sets, strings, symbols, and typed arrays. `Object` objects are compared
      * by their own, not inherited, enumerable properties. Functions and DOM
      * nodes are compared by strict equality, i.e. `===`.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Lang
      * @param {*} value The value to compare.
      * @param {*} other The other value to compare.
      * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
      * @example
      *
      * var object = { 'a': 1 };
      * var other = { 'a': 1 };
      *
      * _.isEqual(object, other);
      * // => true
      *
      * object === other;
      * // => false
      */
     function isEqual(value, other) {
       return baseIsEqual(value, other);
     }
 
     /**
      * This method is like `_.isEqual` except that it accepts `customizer` which
      * is invoked to compare values. If `customizer` returns `undefined`, comparisons
      * are handled by the method instead. The `customizer` is invoked with up to
      * six arguments: (objValue, othValue [, index|key, object, other, stack]).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to compare.
      * @param {*} other The other value to compare.
      * @param {Function} [customizer] The function to customize comparisons.
      * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
      * @example
      *
      * function isGreeting(value) {
      *   return /^h(?:i|ello)$/.test(value);
      * }
      *
      * function customizer(objValue, othValue) {
      *   if (isGreeting(objValue) && isGreeting(othValue)) {
      *     return true;
      *   }
      * }
      *
      * var array = ['hello', 'goodbye'];
      * var other = ['hi', 'goodbye'];
      *
      * _.isEqualWith(array, other, customizer);
      * // => true
      */
     function isEqualWith(value, other, customizer) {
       customizer = typeof customizer == 'function' ? customizer : undefined;
       var result = customizer ? customizer(value, other) : undefined;
       return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;
     }
 
     /**
      * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,
      * `SyntaxError`, `TypeError`, or `URIError` object.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is an error object, else `false`.
      * @example
      *
      * _.isError(new Error);
      * // => true
      *
      * _.isError(Error);
      * // => false
      */
     function isError(value) {
       if (!isObjectLike(value)) {
         return false;
       }
       var tag = baseGetTag(value);
       return tag == errorTag || tag == domExcTag ||
         (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));
     }
 
     /**
      * Checks if `value` is a finite primitive number.
      *
      * **Note:** This method is based on
      * [`Number.isFinite`](https://mdn.io/Number/isFinite).
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.
      * @example
      *
      * _.isFinite(3);
      * // => true
      *
      * _.isFinite(Number.MIN_VALUE);
      * // => true
      *
      * _.isFinite(Infinity);
      * // => false
      *
      * _.isFinite('3');
      * // => false
      */
     function isFinite(value) {
       return typeof value == 'number' && nativeIsFinite(value);
     }
 
     /**
      * Checks if `value` is classified as a `Function` object.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a function, else `false`.
      * @example
      *
      * _.isFunction(_);
      * // => true
      *
      * _.isFunction(/abc/);
      * // => false
      */
     function isFunction(value) {
       if (!isObject(value)) {
         return false;
       }
       // The use of `Object#toString` avoids issues with the `typeof` operator
       // in Safari 9 which returns 'object' for typed arrays and other constructors.
       var tag = baseGetTag(value);
       return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;
     }
 
     /**
      * Checks if `value` is an integer.
      *
      * **Note:** This method is based on
      * [`Number.isInteger`](https://mdn.io/Number/isInteger).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is an integer, else `false`.
      * @example
      *
      * _.isInteger(3);
      * // => true
      *
      * _.isInteger(Number.MIN_VALUE);
      * // => false
      *
      * _.isInteger(Infinity);
      * // => false
      *
      * _.isInteger('3');
      * // => false
      */
     function isInteger(value) {
       return typeof value == 'number' && value == toInteger(value);
     }
 
     /**
      * Checks if `value` is a valid array-like length.
      *
      * **Note:** This method is loosely based on
      * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
      * @example
      *
      * _.isLength(3);
      * // => true
      *
      * _.isLength(Number.MIN_VALUE);
      * // => false
      *
      * _.isLength(Infinity);
      * // => false
      *
      * _.isLength('3');
      * // => false
      */
     function isLength(value) {
       return typeof value == 'number' &&
         value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
     }
 
     /**
      * Checks if `value` is the
      * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
      * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is an object, else `false`.
      * @example
      *
      * _.isObject({});
      * // => true
      *
      * _.isObject([1, 2, 3]);
      * // => true
      *
      * _.isObject(_.noop);
      * // => true
      *
      * _.isObject(null);
      * // => false
      */
     function isObject(value) {
       var type = typeof value;
       return value != null && (type == 'object' || type == 'function');
     }
 
     /**
      * Checks if `value` is object-like. A value is object-like if it's not `null`
      * and has a `typeof` result of "object".
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
      * @example
      *
      * _.isObjectLike({});
      * // => true
      *
      * _.isObjectLike([1, 2, 3]);
      * // => true
      *
      * _.isObjectLike(_.noop);
      * // => false
      *
      * _.isObjectLike(null);
      * // => false
      */
     function isObjectLike(value) {
       return value != null && typeof value == 'object';
     }
 
     /**
      * Checks if `value` is classified as a `Map` object.
      *
      * @static
      * @memberOf _
      * @since 4.3.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a map, else `false`.
      * @example
      *
      * _.isMap(new Map);
      * // => true
      *
      * _.isMap(new WeakMap);
      * // => false
      */
     var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;
 
     /**
      * Performs a partial deep comparison between `object` and `source` to
      * determine if `object` contains equivalent property values.
      *
      * **Note:** This method is equivalent to `_.matches` when `source` is
      * partially applied.
      *
      * Partial comparisons will match empty array and empty object `source`
      * values against any array or object value, respectively. See `_.isEqual`
      * for a list of supported value comparisons.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Lang
      * @param {Object} object The object to inspect.
      * @param {Object} source The object of property values to match.
      * @returns {boolean} Returns `true` if `object` is a match, else `false`.
      * @example
      *
      * var object = { 'a': 1, 'b': 2 };
      *
      * _.isMatch(object, { 'b': 2 });
      * // => true
      *
      * _.isMatch(object, { 'b': 1 });
      * // => false
      */
     function isMatch(object, source) {
       return object === source || baseIsMatch(object, source, getMatchData(source));
     }
 
     /**
      * This method is like `_.isMatch` except that it accepts `customizer` which
      * is invoked to compare values. If `customizer` returns `undefined`, comparisons
      * are handled by the method instead. The `customizer` is invoked with five
      * arguments: (objValue, srcValue, index|key, object, source).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {Object} object The object to inspect.
      * @param {Object} source The object of property values to match.
      * @param {Function} [customizer] The function to customize comparisons.
      * @returns {boolean} Returns `true` if `object` is a match, else `false`.
      * @example
      *
      * function isGreeting(value) {
      *   return /^h(?:i|ello)$/.test(value);
      * }
      *
      * function customizer(objValue, srcValue) {
      *   if (isGreeting(objValue) && isGreeting(srcValue)) {
      *     return true;
      *   }
      * }
      *
      * var object = { 'greeting': 'hello' };
      * var source = { 'greeting': 'hi' };
      *
      * _.isMatchWith(object, source, customizer);
      * // => true
      */
     function isMatchWith(object, source, customizer) {
       customizer = typeof customizer == 'function' ? customizer : undefined;
       return baseIsMatch(object, source, getMatchData(source), customizer);
     }
 
     /**
      * Checks if `value` is `NaN`.
      *
      * **Note:** This method is based on
      * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as
      * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for
      * `undefined` and other non-number values.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
      * @example
      *
      * _.isNaN(NaN);
      * // => true
      *
      * _.isNaN(new Number(NaN));
      * // => true
      *
      * isNaN(undefined);
      * // => true
      *
      * _.isNaN(undefined);
      * // => false
      */
     function isNaN(value) {
       // An `NaN` primitive is the only value that is not equal to itself.
       // Perform the `toStringTag` check first to avoid errors with some
       // ActiveX objects in IE.
       return isNumber(value) && value != +value;
     }
 
     /**
      * Checks if `value` is a pristine native function.
      *
      * **Note:** This method can't reliably detect native functions in the presence
      * of the core-js package because core-js circumvents this kind of detection.
      * Despite multiple requests, the core-js maintainer has made it clear: any
      * attempt to fix the detection will be obstructed. As a result, we're left
      * with little choice but to throw an error. Unfortunately, this also affects
      * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),
      * which rely on core-js.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a native function,
      *  else `false`.
      * @example
      *
      * _.isNative(Array.prototype.push);
      * // => true
      *
      * _.isNative(_);
      * // => false
      */
     function isNative(value) {
       if (isMaskable(value)) {
         throw new Error(CORE_ERROR_TEXT);
       }
       return baseIsNative(value);
     }
 
     /**
      * Checks if `value` is `null`.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is `null`, else `false`.
      * @example
      *
      * _.isNull(null);
      * // => true
      *
      * _.isNull(void 0);
      * // => false
      */
     function isNull(value) {
       return value === null;
     }
 
     /**
      * Checks if `value` is `null` or `undefined`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is nullish, else `false`.
      * @example
      *
      * _.isNil(null);
      * // => true
      *
      * _.isNil(void 0);
      * // => true
      *
      * _.isNil(NaN);
      * // => false
      */
     function isNil(value) {
       return value == null;
     }
 
     /**
      * Checks if `value` is classified as a `Number` primitive or object.
      *
      * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are
      * classified as numbers, use the `_.isFinite` method.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a number, else `false`.
      * @example
      *
      * _.isNumber(3);
      * // => true
      *
      * _.isNumber(Number.MIN_VALUE);
      * // => true
      *
      * _.isNumber(Infinity);
      * // => true
      *
      * _.isNumber('3');
      * // => false
      */
     function isNumber(value) {
       return typeof value == 'number' ||
         (isObjectLike(value) && baseGetTag(value) == numberTag);
     }
 
     /**
      * Checks if `value` is a plain object, that is, an object created by the
      * `Object` constructor or one with a `[[Prototype]]` of `null`.
      *
      * @static
      * @memberOf _
      * @since 0.8.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
      * @example
      *
      * function Foo() {
      *   this.a = 1;
      * }
      *
      * _.isPlainObject(new Foo);
      * // => false
      *
      * _.isPlainObject([1, 2, 3]);
      * // => false
      *
      * _.isPlainObject({ 'x': 0, 'y': 0 });
      * // => true
      *
      * _.isPlainObject(Object.create(null));
      * // => true
      */
     function isPlainObject(value) {
       if (!isObjectLike(value) || baseGetTag(value) != objectTag) {
         return false;
       }
       var proto = getPrototype(value);
       if (proto === null) {
         return true;
       }
       var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;
       return typeof Ctor == 'function' && Ctor instanceof Ctor &&
         funcToString.call(Ctor) == objectCtorString;
     }
 
     /**
      * Checks if `value` is classified as a `RegExp` object.
      *
      * @static
      * @memberOf _
      * @since 0.1.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
      * @example
      *
      * _.isRegExp(/abc/);
      * // => true
      *
      * _.isRegExp('/abc/');
      * // => false
      */
     var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;
 
     /**
      * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754
      * double precision number which isn't the result of a rounded unsafe integer.
      *
      * **Note:** This method is based on
      * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.
      * @example
      *
      * _.isSafeInteger(3);
      * // => true
      *
      * _.isSafeInteger(Number.MIN_VALUE);
      * // => false
      *
      * _.isSafeInteger(Infinity);
      * // => false
      *
      * _.isSafeInteger('3');
      * // => false
      */
     function isSafeInteger(value) {
       return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;
     }
 
     /**
      * Checks if `value` is classified as a `Set` object.
      *
      * @static
      * @memberOf _
      * @since 4.3.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a set, else `false`.
      * @example
      *
      * _.isSet(new Set);
      * // => true
      *
      * _.isSet(new WeakSet);
      * // => false
      */
     var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;
 
     /**
      * Checks if `value` is classified as a `String` primitive or object.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a string, else `false`.
      * @example
      *
      * _.isString('abc');
      * // => true
      *
      * _.isString(1);
      * // => false
      */
     function isString(value) {
       return typeof value == 'string' ||
         (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);
     }
 
     /**
      * Checks if `value` is classified as a `Symbol` primitive or object.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
      * @example
      *
      * _.isSymbol(Symbol.iterator);
      * // => true
      *
      * _.isSymbol('abc');
      * // => false
      */
     function isSymbol(value) {
       return typeof value == 'symbol' ||
         (isObjectLike(value) && baseGetTag(value) == symbolTag);
     }
 
     /**
      * Checks if `value` is classified as a typed array.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
      * @example
      *
      * _.isTypedArray(new Uint8Array);
      * // => true
      *
      * _.isTypedArray([]);
      * // => false
      */
     var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;
 
     /**
      * Checks if `value` is `undefined`.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
      * @example
      *
      * _.isUndefined(void 0);
      * // => true
      *
      * _.isUndefined(null);
      * // => false
      */
     function isUndefined(value) {
       return value === undefined;
     }
 
     /**
      * Checks if `value` is classified as a `WeakMap` object.
      *
      * @static
      * @memberOf _
      * @since 4.3.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.
      * @example
      *
      * _.isWeakMap(new WeakMap);
      * // => true
      *
      * _.isWeakMap(new Map);
      * // => false
      */
     function isWeakMap(value) {
       return isObjectLike(value) && getTag(value) == weakMapTag;
     }
 
     /**
      * Checks if `value` is classified as a `WeakSet` object.
      *
      * @static
      * @memberOf _
      * @since 4.3.0
      * @category Lang
      * @param {*} value The value to check.
      * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.
      * @example
      *
      * _.isWeakSet(new WeakSet);
      * // => true
      *
      * _.isWeakSet(new Set);
      * // => false
      */
     function isWeakSet(value) {
       return isObjectLike(value) && baseGetTag(value) == weakSetTag;
     }
 
     /**
      * Checks if `value` is less than `other`.
      *
      * @static
      * @memberOf _
      * @since 3.9.0
      * @category Lang
      * @param {*} value The value to compare.
      * @param {*} other The other value to compare.
      * @returns {boolean} Returns `true` if `value` is less than `other`,
      *  else `false`.
      * @see _.gt
      * @example
      *
      * _.lt(1, 3);
      * // => true
      *
      * _.lt(3, 3);
      * // => false
      *
      * _.lt(3, 1);
      * // => false
      */
     var lt = createRelationalOperation(baseLt);
 
     /**
      * Checks if `value` is less than or equal to `other`.
      *
      * @static
      * @memberOf _
      * @since 3.9.0
      * @category Lang
      * @param {*} value The value to compare.
      * @param {*} other The other value to compare.
      * @returns {boolean} Returns `true` if `value` is less than or equal to
      *  `other`, else `false`.
      * @see _.gte
      * @example
      *
      * _.lte(1, 3);
      * // => true
      *
      * _.lte(3, 3);
      * // => true
      *
      * _.lte(3, 1);
      * // => false
      */
     var lte = createRelationalOperation(function(value, other) {
       return value <= other;
     });
 
     /**
      * Converts `value` to an array.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Lang
      * @param {*} value The value to convert.
      * @returns {Array} Returns the converted array.
      * @example
      *
      * _.toArray({ 'a': 1, 'b': 2 });
      * // => [1, 2]
      *
      * _.toArray('abc');
      * // => ['a', 'b', 'c']
      *
      * _.toArray(1);
      * // => []
      *
      * _.toArray(null);
      * // => []
      */
     function toArray(value) {
       if (!value) {
         return [];
       }
       if (isArrayLike(value)) {
         return isString(value) ? stringToArray(value) : copyArray(value);
       }
       if (symIterator && value[symIterator]) {
         return iteratorToArray(value[symIterator]());
       }
       var tag = getTag(value),
           func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);
 
       return func(value);
     }
 
     /**
      * Converts `value` to a finite number.
      *
      * @static
      * @memberOf _
      * @since 4.12.0
      * @category Lang
      * @param {*} value The value to convert.
      * @returns {number} Returns the converted number.
      * @example
      *
      * _.toFinite(3.2);
      * // => 3.2
      *
      * _.toFinite(Number.MIN_VALUE);
      * // => 5e-324
      *
      * _.toFinite(Infinity);
      * // => 1.7976931348623157e+308
      *
      * _.toFinite('3.2');
      * // => 3.2
      */
     function toFinite(value) {
       if (!value) {
         return value === 0 ? value : 0;
       }
       value = toNumber(value);
       if (value === INFINITY || value === -INFINITY) {
         var sign = (value < 0 ? -1 : 1);
         return sign * MAX_INTEGER;
       }
       return value === value ? value : 0;
     }
 
     /**
      * Converts `value` to an integer.
      *
      * **Note:** This method is loosely based on
      * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to convert.
      * @returns {number} Returns the converted integer.
      * @example
      *
      * _.toInteger(3.2);
      * // => 3
      *
      * _.toInteger(Number.MIN_VALUE);
      * // => 0
      *
      * _.toInteger(Infinity);
      * // => 1.7976931348623157e+308
      *
      * _.toInteger('3.2');
      * // => 3
      */
     function toInteger(value) {
       var result = toFinite(value),
           remainder = result % 1;
 
       return result === result ? (remainder ? result - remainder : result) : 0;
     }
 
     /**
      * Converts `value` to an integer suitable for use as the length of an
      * array-like object.
      *
      * **Note:** This method is based on
      * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to convert.
      * @returns {number} Returns the converted integer.
      * @example
      *
      * _.toLength(3.2);
      * // => 3
      *
      * _.toLength(Number.MIN_VALUE);
      * // => 0
      *
      * _.toLength(Infinity);
      * // => 4294967295
      *
      * _.toLength('3.2');
      * // => 3
      */
     function toLength(value) {
       return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;
     }
 
     /**
      * Converts `value` to a number.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to process.
      * @returns {number} Returns the number.
      * @example
      *
      * _.toNumber(3.2);
      * // => 3.2
      *
      * _.toNumber(Number.MIN_VALUE);
      * // => 5e-324
      *
      * _.toNumber(Infinity);
      * // => Infinity
      *
      * _.toNumber('3.2');
      * // => 3.2
      */
     function toNumber(value) {
       if (typeof value == 'number') {
         return value;
       }
       if (isSymbol(value)) {
         return NAN;
       }
       if (isObject(value)) {
         var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
         value = isObject(other) ? (other + '') : other;
       }
       if (typeof value != 'string') {
         return value === 0 ? value : +value;
       }
       value = baseTrim(value);
       var isBinary = reIsBinary.test(value);
       return (isBinary || reIsOctal.test(value))
         ? freeParseInt(value.slice(2), isBinary ? 2 : 8)
         : (reIsBadHex.test(value) ? NAN : +value);
     }
 
     /**
      * Converts `value` to a plain object flattening inherited enumerable string
      * keyed properties of `value` to own properties of the plain object.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Lang
      * @param {*} value The value to convert.
      * @returns {Object} Returns the converted plain object.
      * @example
      *
      * function Foo() {
      *   this.b = 2;
      * }
      *
      * Foo.prototype.c = 3;
      *
      * _.assign({ 'a': 1 }, new Foo);
      * // => { 'a': 1, 'b': 2 }
      *
      * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));
      * // => { 'a': 1, 'b': 2, 'c': 3 }
      */
     function toPlainObject(value) {
       return copyObject(value, keysIn(value));
     }
 
     /**
      * Converts `value` to a safe integer. A safe integer can be compared and
      * represented correctly.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to convert.
      * @returns {number} Returns the converted integer.
      * @example
      *
      * _.toSafeInteger(3.2);
      * // => 3
      *
      * _.toSafeInteger(Number.MIN_VALUE);
      * // => 0
      *
      * _.toSafeInteger(Infinity);
      * // => 9007199254740991
      *
      * _.toSafeInteger('3.2');
      * // => 3
      */
     function toSafeInteger(value) {
       return value
         ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)
         : (value === 0 ? value : 0);
     }
 
     /**
      * Converts `value` to a string. An empty string is returned for `null`
      * and `undefined` values. The sign of `-0` is preserved.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Lang
      * @param {*} value The value to convert.
      * @returns {string} Returns the converted string.
      * @example
      *
      * _.toString(null);
      * // => ''
      *
      * _.toString(-0);
      * // => '-0'
      *
      * _.toString([1, 2, 3]);
      * // => '1,2,3'
      */
     function toString(value) {
       return value == null ? '' : baseToString(value);
     }
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Assigns own enumerable string keyed properties of source objects to the
      * destination object. Source objects are applied from left to right.
      * Subsequent sources overwrite property assignments of previous sources.
      *
      * **Note:** This method mutates `object` and is loosely based on
      * [`Object.assign`](https://mdn.io/Object/assign).
      *
      * @static
      * @memberOf _
      * @since 0.10.0
      * @category Object
      * @param {Object} object The destination object.
      * @param {...Object} [sources] The source objects.
      * @returns {Object} Returns `object`.
      * @see _.assignIn
      * @example
      *
      * function Foo() {
      *   this.a = 1;
      * }
      *
      * function Bar() {
      *   this.c = 3;
      * }
      *
      * Foo.prototype.b = 2;
      * Bar.prototype.d = 4;
      *
      * _.assign({ 'a': 0 }, new Foo, new Bar);
      * // => { 'a': 1, 'c': 3 }
      */
     var assign = createAssigner(function(object, source) {
       if (isPrototype(source) || isArrayLike(source)) {
         copyObject(source, keys(source), object);
         return;
       }
       for (var key in source) {
         if (hasOwnProperty.call(source, key)) {
           assignValue(object, key, source[key]);
         }
       }
     });
 
     /**
      * This method is like `_.assign` except that it iterates over own and
      * inherited source properties.
      *
      * **Note:** This method mutates `object`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @alias extend
      * @category Object
      * @param {Object} object The destination object.
      * @param {...Object} [sources] The source objects.
      * @returns {Object} Returns `object`.
      * @see _.assign
      * @example
      *
      * function Foo() {
      *   this.a = 1;
      * }
      *
      * function Bar() {
      *   this.c = 3;
      * }
      *
      * Foo.prototype.b = 2;
      * Bar.prototype.d = 4;
      *
      * _.assignIn({ 'a': 0 }, new Foo, new Bar);
      * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }
      */
     var assignIn = createAssigner(function(object, source) {
       copyObject(source, keysIn(source), object);
     });
 
     /**
      * This method is like `_.assignIn` except that it accepts `customizer`
      * which is invoked to produce the assigned values. If `customizer` returns
      * `undefined`, assignment is handled by the method instead. The `customizer`
      * is invoked with five arguments: (objValue, srcValue, key, object, source).
      *
      * **Note:** This method mutates `object`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @alias extendWith
      * @category Object
      * @param {Object} object The destination object.
      * @param {...Object} sources The source objects.
      * @param {Function} [customizer] The function to customize assigned values.
      * @returns {Object} Returns `object`.
      * @see _.assignWith
      * @example
      *
      * function customizer(objValue, srcValue) {
      *   return _.isUndefined(objValue) ? srcValue : objValue;
      * }
      *
      * var defaults = _.partialRight(_.assignInWith, customizer);
      *
      * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
      * // => { 'a': 1, 'b': 2 }
      */
     var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {
       copyObject(source, keysIn(source), object, customizer);
     });
 
     /**
      * This method is like `_.assign` except that it accepts `customizer`
      * which is invoked to produce the assigned values. If `customizer` returns
      * `undefined`, assignment is handled by the method instead. The `customizer`
      * is invoked with five arguments: (objValue, srcValue, key, object, source).
      *
      * **Note:** This method mutates `object`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Object
      * @param {Object} object The destination object.
      * @param {...Object} sources The source objects.
      * @param {Function} [customizer] The function to customize assigned values.
      * @returns {Object} Returns `object`.
      * @see _.assignInWith
      * @example
      *
      * function customizer(objValue, srcValue) {
      *   return _.isUndefined(objValue) ? srcValue : objValue;
      * }
      *
      * var defaults = _.partialRight(_.assignWith, customizer);
      *
      * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
      * // => { 'a': 1, 'b': 2 }
      */
     var assignWith = createAssigner(function(object, source, srcIndex, customizer) {
       copyObject(source, keys(source), object, customizer);
     });
 
     /**
      * Creates an array of values corresponding to `paths` of `object`.
      *
      * @static
      * @memberOf _
      * @since 1.0.0
      * @category Object
      * @param {Object} object The object to iterate over.
      * @param {...(string|string[])} [paths] The property paths to pick.
      * @returns {Array} Returns the picked values.
      * @example
      *
      * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
      *
      * _.at(object, ['a[0].b.c', 'a[1]']);
      * // => [3, 4]
      */
     var at = flatRest(baseAt);
 
     /**
      * Creates an object that inherits from the `prototype` object. If a
      * `properties` object is given, its own enumerable string keyed properties
      * are assigned to the created object.
      *
      * @static
      * @memberOf _
      * @since 2.3.0
      * @category Object
      * @param {Object} prototype The object to inherit from.
      * @param {Object} [properties] The properties to assign to the object.
      * @returns {Object} Returns the new object.
      * @example
      *
      * function Shape() {
      *   this.x = 0;
      *   this.y = 0;
      * }
      *
      * function Circle() {
      *   Shape.call(this);
      * }
      *
      * Circle.prototype = _.create(Shape.prototype, {
      *   'constructor': Circle
      * });
      *
      * var circle = new Circle;
      * circle instanceof Circle;
      * // => true
      *
      * circle instanceof Shape;
      * // => true
      */
     function create(prototype, properties) {
       var result = baseCreate(prototype);
       return properties == null ? result : baseAssign(result, properties);
     }
 
     /**
      * Assigns own and inherited enumerable string keyed properties of source
      * objects to the destination object for all destination properties that
      * resolve to `undefined`. Source objects are applied from left to right.
      * Once a property is set, additional values of the same property are ignored.
      *
      * **Note:** This method mutates `object`.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Object
      * @param {Object} object The destination object.
      * @param {...Object} [sources] The source objects.
      * @returns {Object} Returns `object`.
      * @see _.defaultsDeep
      * @example
      *
      * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
      * // => { 'a': 1, 'b': 2 }
      */
     var defaults = baseRest(function(object, sources) {
       object = Object(object);
 
       var index = -1;
       var length = sources.length;
       var guard = length > 2 ? sources[2] : undefined;
 
       if (guard && isIterateeCall(sources[0], sources[1], guard)) {
         length = 1;
       }
 
       while (++index < length) {
         var source = sources[index];
         var props = keysIn(source);
         var propsIndex = -1;
         var propsLength = props.length;
 
         while (++propsIndex < propsLength) {
           var key = props[propsIndex];
           var value = object[key];
 
           if (value === undefined ||
               (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {
             object[key] = source[key];
           }
         }
       }
 
       return object;
     });
 
     /**
      * This method is like `_.defaults` except that it recursively assigns
      * default properties.
      *
      * **Note:** This method mutates `object`.
      *
      * @static
      * @memberOf _
      * @since 3.10.0
      * @category Object
      * @param {Object} object The destination object.
      * @param {...Object} [sources] The source objects.
      * @returns {Object} Returns `object`.
      * @see _.defaults
      * @example
      *
      * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });
      * // => { 'a': { 'b': 2, 'c': 3 } }
      */
     var defaultsDeep = baseRest(function(args) {
       args.push(undefined, customDefaultsMerge);
       return apply(mergeWith, undefined, args);
     });
 
     /**
      * This method is like `_.find` except that it returns the key of the first
      * element `predicate` returns truthy for instead of the element itself.
      *
      * @static
      * @memberOf _
      * @since 1.1.0
      * @category Object
      * @param {Object} object The object to inspect.
      * @param {Function} [predicate=_.identity] The function invoked per iteration.
      * @returns {string|undefined} Returns the key of the matched element,
      *  else `undefined`.
      * @example
      *
      * var users = {
      *   'barney':  { 'age': 36, 'active': true },
      *   'fred':    { 'age': 40, 'active': false },
      *   'pebbles': { 'age': 1,  'active': true }
      * };
      *
      * _.findKey(users, function(o) { return o.age < 40; });
      * // => 'barney' (iteration order is not guaranteed)
      *
      * // The `_.matches` iteratee shorthand.
      * _.findKey(users, { 'age': 1, 'active': true });
      * // => 'pebbles'
      *
      * // The `_.matchesProperty` iteratee shorthand.
      * _.findKey(users, ['active', false]);
      * // => 'fred'
      *
      * // The `_.property` iteratee shorthand.
      * _.findKey(users, 'active');
      * // => 'barney'
      */
     function findKey(object, predicate) {
       return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);
     }
 
     /**
      * This method is like `_.findKey` except that it iterates over elements of
      * a collection in the opposite order.
      *
      * @static
      * @memberOf _
      * @since 2.0.0
      * @category Object
      * @param {Object} object The object to inspect.
      * @param {Function} [predicate=_.identity] The function invoked per iteration.
      * @returns {string|undefined} Returns the key of the matched element,
      *  else `undefined`.
      * @example
      *
      * var users = {
      *   'barney':  { 'age': 36, 'active': true },
      *   'fred':    { 'age': 40, 'active': false },
      *   'pebbles': { 'age': 1,  'active': true }
      * };
      *
      * _.findLastKey(users, function(o) { return o.age < 40; });
      * // => returns 'pebbles' assuming `_.findKey` returns 'barney'
      *
      * // The `_.matches` iteratee shorthand.
      * _.findLastKey(users, { 'age': 36, 'active': true });
      * // => 'barney'
      *
      * // The `_.matchesProperty` iteratee shorthand.
      * _.findLastKey(users, ['active', false]);
      * // => 'fred'
      *
      * // The `_.property` iteratee shorthand.
      * _.findLastKey(users, 'active');
      * // => 'pebbles'
      */
     function findLastKey(object, predicate) {
       return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);
     }
 
     /**
      * Iterates over own and inherited enumerable string keyed properties of an
      * object and invokes `iteratee` for each property. The iteratee is invoked
      * with three arguments: (value, key, object). Iteratee functions may exit
      * iteration early by explicitly returning `false`.
      *
      * @static
      * @memberOf _
      * @since 0.3.0
      * @category Object
      * @param {Object} object The object to iterate over.
      * @param {Function} [iteratee=_.identity] The function invoked per iteration.
      * @returns {Object} Returns `object`.
      * @see _.forInRight
      * @example
      *
      * function Foo() {
      *   this.a = 1;
      *   this.b = 2;
      * }
      *
      * Foo.prototype.c = 3;
      *
      * _.forIn(new Foo, function(value, key) {
      *   console.log(key);
      * });
      * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).
      */
     function forIn(object, iteratee) {
       return object == null
         ? object
         : baseFor(object, getIteratee(iteratee, 3), keysIn);
     }
 
     /**
      * This method is like `_.forIn` except that it iterates over properties of
      * `object` in the opposite order.
      *
      * @static
      * @memberOf _
      * @since 2.0.0
      * @category Object
      * @param {Object} object The object to iterate over.
      * @param {Function} [iteratee=_.identity] The function invoked per iteration.
      * @returns {Object} Returns `object`.
      * @see _.forIn
      * @example
      *
      * function Foo() {
      *   this.a = 1;
      *   this.b = 2;
      * }
      *
      * Foo.prototype.c = 3;
      *
      * _.forInRight(new Foo, function(value, key) {
      *   console.log(key);
      * });
      * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.
      */
     function forInRight(object, iteratee) {
       return object == null
         ? object
         : baseForRight(object, getIteratee(iteratee, 3), keysIn);
     }
 
     /**
      * Iterates over own enumerable string keyed properties of an object and
      * invokes `iteratee` for each property. The iteratee is invoked with three
      * arguments: (value, key, object). Iteratee functions may exit iteration
      * early by explicitly returning `false`.
      *
      * @static
      * @memberOf _
      * @since 0.3.0
      * @category Object
      * @param {Object} object The object to iterate over.
      * @param {Function} [iteratee=_.identity] The function invoked per iteration.
      * @returns {Object} Returns `object`.
      * @see _.forOwnRight
      * @example
      *
      * function Foo() {
      *   this.a = 1;
      *   this.b = 2;
      * }
      *
      * Foo.prototype.c = 3;
      *
      * _.forOwn(new Foo, function(value, key) {
      *   console.log(key);
      * });
      * // => Logs 'a' then 'b' (iteration order is not guaranteed).
      */
     function forOwn(object, iteratee) {
       return object && baseForOwn(object, getIteratee(iteratee, 3));
     }
 
     /**
      * This method is like `_.forOwn` except that it iterates over properties of
      * `object` in the opposite order.
      *
      * @static
      * @memberOf _
      * @since 2.0.0
      * @category Object
      * @param {Object} object The object to iterate over.
      * @param {Function} [iteratee=_.identity] The function invoked per iteration.
      * @returns {Object} Returns `object`.
      * @see _.forOwn
      * @example
      *
      * function Foo() {
      *   this.a = 1;
      *   this.b = 2;
      * }
      *
      * Foo.prototype.c = 3;
      *
      * _.forOwnRight(new Foo, function(value, key) {
      *   console.log(key);
      * });
      * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.
      */
     function forOwnRight(object, iteratee) {
       return object && baseForOwnRight(object, getIteratee(iteratee, 3));
     }
 
     /**
      * Creates an array of function property names from own enumerable properties
      * of `object`.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Object
      * @param {Object} object The object to inspect.
      * @returns {Array} Returns the function names.
      * @see _.functionsIn
      * @example
      *
      * function Foo() {
      *   this.a = _.constant('a');
      *   this.b = _.constant('b');
      * }
      *
      * Foo.prototype.c = _.constant('c');
      *
      * _.functions(new Foo);
      * // => ['a', 'b']
      */
     function functions(object) {
       return object == null ? [] : baseFunctions(object, keys(object));
     }
 
     /**
      * Creates an array of function property names from own and inherited
      * enumerable properties of `object`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Object
      * @param {Object} object The object to inspect.
      * @returns {Array} Returns the function names.
      * @see _.functions
      * @example
      *
      * function Foo() {
      *   this.a = _.constant('a');
      *   this.b = _.constant('b');
      * }
      *
      * Foo.prototype.c = _.constant('c');
      *
      * _.functionsIn(new Foo);
      * // => ['a', 'b', 'c']
      */
     function functionsIn(object) {
       return object == null ? [] : baseFunctions(object, keysIn(object));
     }
 
     /**
      * Gets the value at `path` of `object`. If the resolved value is
      * `undefined`, the `defaultValue` is returned in its place.
      *
      * @static
      * @memberOf _
      * @since 3.7.0
      * @category Object
      * @param {Object} object The object to query.
      * @param {Array|string} path The path of the property to get.
      * @param {*} [defaultValue] The value returned for `undefined` resolved values.
      * @returns {*} Returns the resolved value.
      * @example
      *
      * var object = { 'a': [{ 'b': { 'c': 3 } }] };
      *
      * _.get(object, 'a[0].b.c');
      * // => 3
      *
      * _.get(object, ['a', '0', 'b', 'c']);
      * // => 3
      *
      * _.get(object, 'a.b.c', 'default');
      * // => 'default'
      */
     function get(object, path, defaultValue) {
       var result = object == null ? undefined : baseGet(object, path);
       return result === undefined ? defaultValue : result;
     }
 
     /**
      * Checks if `path` is a direct property of `object`.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Object
      * @param {Object} object The object to query.
      * @param {Array|string} path The path to check.
      * @returns {boolean} Returns `true` if `path` exists, else `false`.
      * @example
      *
      * var object = { 'a': { 'b': 2 } };
      * var other = _.create({ 'a': _.create({ 'b': 2 }) });
      *
      * _.has(object, 'a');
      * // => true
      *
      * _.has(object, 'a.b');
      * // => true
      *
      * _.has(object, ['a', 'b']);
      * // => true
      *
      * _.has(other, 'a');
      * // => false
      */
     function has(object, path) {
       return object != null && hasPath(object, path, baseHas);
     }
 
     /**
      * Checks if `path` is a direct or inherited property of `object`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Object
      * @param {Object} object The object to query.
      * @param {Array|string} path The path to check.
      * @returns {boolean} Returns `true` if `path` exists, else `false`.
      * @example
      *
      * var object = _.create({ 'a': _.create({ 'b': 2 }) });
      *
      * _.hasIn(object, 'a');
      * // => true
      *
      * _.hasIn(object, 'a.b');
      * // => true
      *
      * _.hasIn(object, ['a', 'b']);
      * // => true
      *
      * _.hasIn(object, 'b');
      * // => false
      */
     function hasIn(object, path) {
       return object != null && hasPath(object, path, baseHasIn);
     }
 
     /**
      * Creates an object composed of the inverted keys and values of `object`.
      * If `object` contains duplicate values, subsequent values overwrite
      * property assignments of previous values.
      *
      * @static
      * @memberOf _
      * @since 0.7.0
      * @category Object
      * @param {Object} object The object to invert.
      * @returns {Object} Returns the new inverted object.
      * @example
      *
      * var object = { 'a': 1, 'b': 2, 'c': 1 };
      *
      * _.invert(object);
      * // => { '1': 'c', '2': 'b' }
      */
     var invert = createInverter(function(result, value, key) {
       if (value != null &&
           typeof value.toString != 'function') {
         value = nativeObjectToString.call(value);
       }
 
       result[value] = key;
     }, constant(identity));
 
     /**
      * This method is like `_.invert` except that the inverted object is generated
      * from the results of running each element of `object` thru `iteratee`. The
      * corresponding inverted value of each inverted key is an array of keys
      * responsible for generating the inverted value. The iteratee is invoked
      * with one argument: (value).
      *
      * @static
      * @memberOf _
      * @since 4.1.0
      * @category Object
      * @param {Object} object The object to invert.
      * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
      * @returns {Object} Returns the new inverted object.
      * @example
      *
      * var object = { 'a': 1, 'b': 2, 'c': 1 };
      *
      * _.invertBy(object);
      * // => { '1': ['a', 'c'], '2': ['b'] }
      *
      * _.invertBy(object, function(value) {
      *   return 'group' + value;
      * });
      * // => { 'group1': ['a', 'c'], 'group2': ['b'] }
      */
     var invertBy = createInverter(function(result, value, key) {
       if (value != null &&
           typeof value.toString != 'function') {
         value = nativeObjectToString.call(value);
       }
 
       if (hasOwnProperty.call(result, value)) {
         result[value].push(key);
       } else {
         result[value] = [key];
       }
     }, getIteratee);
 
     /**
      * Invokes the method at `path` of `object`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Object
      * @param {Object} object The object to query.
      * @param {Array|string} path The path of the method to invoke.
      * @param {...*} [args] The arguments to invoke the method with.
      * @returns {*} Returns the result of the invoked method.
      * @example
      *
      * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };
      *
      * _.invoke(object, 'a[0].b.c.slice', 1, 3);
      * // => [2, 3]
      */
     var invoke = baseRest(baseInvoke);
 
     /**
      * Creates an array of the own enumerable property names of `object`.
      *
      * **Note:** Non-object values are coerced to objects. See the
      * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
      * for more details.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Object
      * @param {Object} object The object to query.
      * @returns {Array} Returns the array of property names.
      * @example
      *
      * function Foo() {
      *   this.a = 1;
      *   this.b = 2;
      * }
      *
      * Foo.prototype.c = 3;
      *
      * _.keys(new Foo);
      * // => ['a', 'b'] (iteration order is not guaranteed)
      *
      * _.keys('hi');
      * // => ['0', '1']
      */
     function keys(object) {
       return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
     }
 
     /**
      * Creates an array of the own and inherited enumerable property names of `object`.
      *
      * **Note:** Non-object values are coerced to objects.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Object
      * @param {Object} object The object to query.
      * @returns {Array} Returns the array of property names.
      * @example
      *
      * function Foo() {
      *   this.a = 1;
      *   this.b = 2;
      * }
      *
      * Foo.prototype.c = 3;
      *
      * _.keysIn(new Foo);
      * // => ['a', 'b', 'c'] (iteration order is not guaranteed)
      */
     function keysIn(object) {
       return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);
     }
 
     /**
      * The opposite of `_.mapValues`; this method creates an object with the
      * same values as `object` and keys generated by running each own enumerable
      * string keyed property of `object` thru `iteratee`. The iteratee is invoked
      * with three arguments: (value, key, object).
      *
      * @static
      * @memberOf _
      * @since 3.8.0
      * @category Object
      * @param {Object} object The object to iterate over.
      * @param {Function} [iteratee=_.identity] The function invoked per iteration.
      * @returns {Object} Returns the new mapped object.
      * @see _.mapValues
      * @example
      *
      * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {
      *   return key + value;
      * });
      * // => { 'a1': 1, 'b2': 2 }
      */
     function mapKeys(object, iteratee) {
       var result = {};
       iteratee = getIteratee(iteratee, 3);
 
       baseForOwn(object, function(value, key, object) {
         baseAssignValue(result, iteratee(value, key, object), value);
       });
       return result;
     }
 
     /**
      * Creates an object with the same keys as `object` and values generated
      * by running each own enumerable string keyed property of `object` thru
      * `iteratee`. The iteratee is invoked with three arguments:
      * (value, key, object).
      *
      * @static
      * @memberOf _
      * @since 2.4.0
      * @category Object
      * @param {Object} object The object to iterate over.
      * @param {Function} [iteratee=_.identity] The function invoked per iteration.
      * @returns {Object} Returns the new mapped object.
      * @see _.mapKeys
      * @example
      *
      * var users = {
      *   'fred':    { 'user': 'fred',    'age': 40 },
      *   'pebbles': { 'user': 'pebbles', 'age': 1 }
      * };
      *
      * _.mapValues(users, function(o) { return o.age; });
      * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
      *
      * // The `_.property` iteratee shorthand.
      * _.mapValues(users, 'age');
      * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
      */
     function mapValues(object, iteratee) {
       var result = {};
       iteratee = getIteratee(iteratee, 3);
 
       baseForOwn(object, function(value, key, object) {
         baseAssignValue(result, key, iteratee(value, key, object));
       });
       return result;
     }
 
     /**
      * This method is like `_.assign` except that it recursively merges own and
      * inherited enumerable string keyed properties of source objects into the
      * destination object. Source properties that resolve to `undefined` are
      * skipped if a destination value exists. Array and plain object properties
      * are merged recursively. Other objects and value types are overridden by
      * assignment. Source objects are applied from left to right. Subsequent
      * sources overwrite property assignments of previous sources.
      *
      * **Note:** This method mutates `object`.
      *
      * @static
      * @memberOf _
      * @since 0.5.0
      * @category Object
      * @param {Object} object The destination object.
      * @param {...Object} [sources] The source objects.
      * @returns {Object} Returns `object`.
      * @example
      *
      * var object = {
      *   'a': [{ 'b': 2 }, { 'd': 4 }]
      * };
      *
      * var other = {
      *   'a': [{ 'c': 3 }, { 'e': 5 }]
      * };
      *
      * _.merge(object, other);
      * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }
      */
     var merge = createAssigner(function(object, source, srcIndex) {
       baseMerge(object, source, srcIndex);
     });
 
     /**
      * This method is like `_.merge` except that it accepts `customizer` which
      * is invoked to produce the merged values of the destination and source
      * properties. If `customizer` returns `undefined`, merging is handled by the
      * method instead. The `customizer` is invoked with six arguments:
      * (objValue, srcValue, key, object, source, stack).
      *
      * **Note:** This method mutates `object`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Object
      * @param {Object} object The destination object.
      * @param {...Object} sources The source objects.
      * @param {Function} customizer The function to customize assigned values.
      * @returns {Object} Returns `object`.
      * @example
      *
      * function customizer(objValue, srcValue) {
      *   if (_.isArray(objValue)) {
      *     return objValue.concat(srcValue);
      *   }
      * }
      *
      * var object = { 'a': [1], 'b': [2] };
      * var other = { 'a': [3], 'b': [4] };
      *
      * _.mergeWith(object, other, customizer);
      * // => { 'a': [1, 3], 'b': [2, 4] }
      */
     var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {
       baseMerge(object, source, srcIndex, customizer);
     });
 
     /**
      * The opposite of `_.pick`; this method creates an object composed of the
      * own and inherited enumerable property paths of `object` that are not omitted.
      *
      * **Note:** This method is considerably slower than `_.pick`.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Object
      * @param {Object} object The source object.
      * @param {...(string|string[])} [paths] The property paths to omit.
      * @returns {Object} Returns the new object.
      * @example
      *
      * var object = { 'a': 1, 'b': '2', 'c': 3 };
      *
      * _.omit(object, ['a', 'c']);
      * // => { 'b': '2' }
      */
     var omit = flatRest(function(object, paths) {
       var result = {};
       if (object == null) {
         return result;
       }
       var isDeep = false;
       paths = arrayMap(paths, function(path) {
         path = castPath(path, object);
         isDeep || (isDeep = path.length > 1);
         return path;
       });
       copyObject(object, getAllKeysIn(object), result);
       if (isDeep) {
         result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);
       }
       var length = paths.length;
       while (length--) {
         baseUnset(result, paths[length]);
       }
       return result;
     });
 
     /**
      * The opposite of `_.pickBy`; this method creates an object composed of
      * the own and inherited enumerable string keyed properties of `object` that
      * `predicate` doesn't return truthy for. The predicate is invoked with two
      * arguments: (value, key).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Object
      * @param {Object} object The source object.
      * @param {Function} [predicate=_.identity] The function invoked per property.
      * @returns {Object} Returns the new object.
      * @example
      *
      * var object = { 'a': 1, 'b': '2', 'c': 3 };
      *
      * _.omitBy(object, _.isNumber);
      * // => { 'b': '2' }
      */
     function omitBy(object, predicate) {
       return pickBy(object, negate(getIteratee(predicate)));
     }
 
     /**
      * Creates an object composed of the picked `object` properties.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Object
      * @param {Object} object The source object.
      * @param {...(string|string[])} [paths] The property paths to pick.
      * @returns {Object} Returns the new object.
      * @example
      *
      * var object = { 'a': 1, 'b': '2', 'c': 3 };
      *
      * _.pick(object, ['a', 'c']);
      * // => { 'a': 1, 'c': 3 }
      */
     var pick = flatRest(function(object, paths) {
       return object == null ? {} : basePick(object, paths);
     });
 
     /**
      * Creates an object composed of the `object` properties `predicate` returns
      * truthy for. The predicate is invoked with two arguments: (value, key).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Object
      * @param {Object} object The source object.
      * @param {Function} [predicate=_.identity] The function invoked per property.
      * @returns {Object} Returns the new object.
      * @example
      *
      * var object = { 'a': 1, 'b': '2', 'c': 3 };
      *
      * _.pickBy(object, _.isNumber);
      * // => { 'a': 1, 'c': 3 }
      */
     function pickBy(object, predicate) {
       if (object == null) {
         return {};
       }
       var props = arrayMap(getAllKeysIn(object), function(prop) {
         return [prop];
       });
       predicate = getIteratee(predicate);
       return basePickBy(object, props, function(value, path) {
         return predicate(value, path[0]);
       });
     }
 
     /**
      * This method is like `_.get` except that if the resolved value is a
      * function it's invoked with the `this` binding of its parent object and
      * its result is returned.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Object
      * @param {Object} object The object to query.
      * @param {Array|string} path The path of the property to resolve.
      * @param {*} [defaultValue] The value returned for `undefined` resolved values.
      * @returns {*} Returns the resolved value.
      * @example
      *
      * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };
      *
      * _.result(object, 'a[0].b.c1');
      * // => 3
      *
      * _.result(object, 'a[0].b.c2');
      * // => 4
      *
      * _.result(object, 'a[0].b.c3', 'default');
      * // => 'default'
      *
      * _.result(object, 'a[0].b.c3', _.constant('default'));
      * // => 'default'
      */
     function result(object, path, defaultValue) {
       path = castPath(path, object);
 
       var index = -1,
           length = path.length;
 
       // Ensure the loop is entered when path is empty.
       if (!length) {
         length = 1;
         object = undefined;
       }
       while (++index < length) {
         var value = object == null ? undefined : object[toKey(path[index])];
         if (value === undefined) {
           index = length;
           value = defaultValue;
         }
         object = isFunction(value) ? value.call(object) : value;
       }
       return object;
     }
 
     /**
      * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,
      * it's created. Arrays are created for missing index properties while objects
      * are created for all other missing properties. Use `_.setWith` to customize
      * `path` creation.
      *
      * **Note:** This method mutates `object`.
      *
      * @static
      * @memberOf _
      * @since 3.7.0
      * @category Object
      * @param {Object} object The object to modify.
      * @param {Array|string} path The path of the property to set.
      * @param {*} value The value to set.
      * @returns {Object} Returns `object`.
      * @example
      *
      * var object = { 'a': [{ 'b': { 'c': 3 } }] };
      *
      * _.set(object, 'a[0].b.c', 4);
      * console.log(object.a[0].b.c);
      * // => 4
      *
      * _.set(object, ['x', '0', 'y', 'z'], 5);
      * console.log(object.x[0].y.z);
      * // => 5
      */
     function set(object, path, value) {
       return object == null ? object : baseSet(object, path, value);
     }
 
     /**
      * This method is like `_.set` except that it accepts `customizer` which is
      * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
      * path creation is handled by the method instead. The `customizer` is invoked
      * with three arguments: (nsValue, key, nsObject).
      *
      * **Note:** This method mutates `object`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Object
      * @param {Object} object The object to modify.
      * @param {Array|string} path The path of the property to set.
      * @param {*} value The value to set.
      * @param {Function} [customizer] The function to customize assigned values.
      * @returns {Object} Returns `object`.
      * @example
      *
      * var object = {};
      *
      * _.setWith(object, '[0][1]', 'a', Object);
      * // => { '0': { '1': 'a' } }
      */
     function setWith(object, path, value, customizer) {
       customizer = typeof customizer == 'function' ? customizer : undefined;
       return object == null ? object : baseSet(object, path, value, customizer);
     }
 
     /**
      * Creates an array of own enumerable string keyed-value pairs for `object`
      * which can be consumed by `_.fromPairs`. If `object` is a map or set, its
      * entries are returned.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @alias entries
      * @category Object
      * @param {Object} object The object to query.
      * @returns {Array} Returns the key-value pairs.
      * @example
      *
      * function Foo() {
      *   this.a = 1;
      *   this.b = 2;
      * }
      *
      * Foo.prototype.c = 3;
      *
      * _.toPairs(new Foo);
      * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)
      */
     var toPairs = createToPairs(keys);
 
     /**
      * Creates an array of own and inherited enumerable string keyed-value pairs
      * for `object` which can be consumed by `_.fromPairs`. If `object` is a map
      * or set, its entries are returned.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @alias entriesIn
      * @category Object
      * @param {Object} object The object to query.
      * @returns {Array} Returns the key-value pairs.
      * @example
      *
      * function Foo() {
      *   this.a = 1;
      *   this.b = 2;
      * }
      *
      * Foo.prototype.c = 3;
      *
      * _.toPairsIn(new Foo);
      * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)
      */
     var toPairsIn = createToPairs(keysIn);
 
     /**
      * An alternative to `_.reduce`; this method transforms `object` to a new
      * `accumulator` object which is the result of running each of its own
      * enumerable string keyed properties thru `iteratee`, with each invocation
      * potentially mutating the `accumulator` object. If `accumulator` is not
      * provided, a new object with the same `[[Prototype]]` will be used. The
      * iteratee is invoked with four arguments: (accumulator, value, key, object).
      * Iteratee functions may exit iteration early by explicitly returning `false`.
      *
      * @static
      * @memberOf _
      * @since 1.3.0
      * @category Object
      * @param {Object} object The object to iterate over.
      * @param {Function} [iteratee=_.identity] The function invoked per iteration.
      * @param {*} [accumulator] The custom accumulator value.
      * @returns {*} Returns the accumulated value.
      * @example
      *
      * _.transform([2, 3, 4], function(result, n) {
      *   result.push(n *= n);
      *   return n % 2 == 0;
      * }, []);
      * // => [4, 9]
      *
      * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
      *   (result[value] || (result[value] = [])).push(key);
      * }, {});
      * // => { '1': ['a', 'c'], '2': ['b'] }
      */
     function transform(object, iteratee, accumulator) {
       var isArr = isArray(object),
           isArrLike = isArr || isBuffer(object) || isTypedArray(object);
 
       iteratee = getIteratee(iteratee, 4);
       if (accumulator == null) {
         var Ctor = object && object.constructor;
         if (isArrLike) {
           accumulator = isArr ? new Ctor : [];
         }
         else if (isObject(object)) {
           accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};
         }
         else {
           accumulator = {};
         }
       }
       (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {
         return iteratee(accumulator, value, index, object);
       });
       return accumulator;
     }
 
     /**
      * Removes the property at `path` of `object`.
      *
      * **Note:** This method mutates `object`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Object
      * @param {Object} object The object to modify.
      * @param {Array|string} path The path of the property to unset.
      * @returns {boolean} Returns `true` if the property is deleted, else `false`.
      * @example
      *
      * var object = { 'a': [{ 'b': { 'c': 7 } }] };
      * _.unset(object, 'a[0].b.c');
      * // => true
      *
      * console.log(object);
      * // => { 'a': [{ 'b': {} }] };
      *
      * _.unset(object, ['a', '0', 'b', 'c']);
      * // => true
      *
      * console.log(object);
      * // => { 'a': [{ 'b': {} }] };
      */
     function unset(object, path) {
       return object == null ? true : baseUnset(object, path);
     }
 
     /**
      * This method is like `_.set` except that accepts `updater` to produce the
      * value to set. Use `_.updateWith` to customize `path` creation. The `updater`
      * is invoked with one argument: (value).
      *
      * **Note:** This method mutates `object`.
      *
      * @static
      * @memberOf _
      * @since 4.6.0
      * @category Object
      * @param {Object} object The object to modify.
      * @param {Array|string} path The path of the property to set.
      * @param {Function} updater The function to produce the updated value.
      * @returns {Object} Returns `object`.
      * @example
      *
      * var object = { 'a': [{ 'b': { 'c': 3 } }] };
      *
      * _.update(object, 'a[0].b.c', function(n) { return n * n; });
      * console.log(object.a[0].b.c);
      * // => 9
      *
      * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });
      * console.log(object.x[0].y.z);
      * // => 0
      */
     function update(object, path, updater) {
       return object == null ? object : baseUpdate(object, path, castFunction(updater));
     }
 
     /**
      * This method is like `_.update` except that it accepts `customizer` which is
      * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
      * path creation is handled by the method instead. The `customizer` is invoked
      * with three arguments: (nsValue, key, nsObject).
      *
      * **Note:** This method mutates `object`.
      *
      * @static
      * @memberOf _
      * @since 4.6.0
      * @category Object
      * @param {Object} object The object to modify.
      * @param {Array|string} path The path of the property to set.
      * @param {Function} updater The function to produce the updated value.
      * @param {Function} [customizer] The function to customize assigned values.
      * @returns {Object} Returns `object`.
      * @example
      *
      * var object = {};
      *
      * _.updateWith(object, '[0][1]', _.constant('a'), Object);
      * // => { '0': { '1': 'a' } }
      */
     function updateWith(object, path, updater, customizer) {
       customizer = typeof customizer == 'function' ? customizer : undefined;
       return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);
     }
 
     /**
      * Creates an array of the own enumerable string keyed property values of `object`.
      *
      * **Note:** Non-object values are coerced to objects.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Object
      * @param {Object} object The object to query.
      * @returns {Array} Returns the array of property values.
      * @example
      *
      * function Foo() {
      *   this.a = 1;
      *   this.b = 2;
      * }
      *
      * Foo.prototype.c = 3;
      *
      * _.values(new Foo);
      * // => [1, 2] (iteration order is not guaranteed)
      *
      * _.values('hi');
      * // => ['h', 'i']
      */
     function values(object) {
       return object == null ? [] : baseValues(object, keys(object));
     }
 
     /**
      * Creates an array of the own and inherited enumerable string keyed property
      * values of `object`.
      *
      * **Note:** Non-object values are coerced to objects.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Object
      * @param {Object} object The object to query.
      * @returns {Array} Returns the array of property values.
      * @example
      *
      * function Foo() {
      *   this.a = 1;
      *   this.b = 2;
      * }
      *
      * Foo.prototype.c = 3;
      *
      * _.valuesIn(new Foo);
      * // => [1, 2, 3] (iteration order is not guaranteed)
      */
     function valuesIn(object) {
       return object == null ? [] : baseValues(object, keysIn(object));
     }
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Clamps `number` within the inclusive `lower` and `upper` bounds.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Number
      * @param {number} number The number to clamp.
      * @param {number} [lower] The lower bound.
      * @param {number} upper The upper bound.
      * @returns {number} Returns the clamped number.
      * @example
      *
      * _.clamp(-10, -5, 5);
      * // => -5
      *
      * _.clamp(10, -5, 5);
      * // => 5
      */
     function clamp(number, lower, upper) {
       if (upper === undefined) {
         upper = lower;
         lower = undefined;
       }
       if (upper !== undefined) {
         upper = toNumber(upper);
         upper = upper === upper ? upper : 0;
       }
       if (lower !== undefined) {
         lower = toNumber(lower);
         lower = lower === lower ? lower : 0;
       }
       return baseClamp(toNumber(number), lower, upper);
     }
 
     /**
      * Checks if `n` is between `start` and up to, but not including, `end`. If
      * `end` is not specified, it's set to `start` with `start` then set to `0`.
      * If `start` is greater than `end` the params are swapped to support
      * negative ranges.
      *
      * @static
      * @memberOf _
      * @since 3.3.0
      * @category Number
      * @param {number} number The number to check.
      * @param {number} [start=0] The start of the range.
      * @param {number} end The end of the range.
      * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
      * @see _.range, _.rangeRight
      * @example
      *
      * _.inRange(3, 2, 4);
      * // => true
      *
      * _.inRange(4, 8);
      * // => true
      *
      * _.inRange(4, 2);
      * // => false
      *
      * _.inRange(2, 2);
      * // => false
      *
      * _.inRange(1.2, 2);
      * // => true
      *
      * _.inRange(5.2, 4);
      * // => false
      *
      * _.inRange(-3, -2, -6);
      * // => true
      */
     function inRange(number, start, end) {
       start = toFinite(start);
       if (end === undefined) {
         end = start;
         start = 0;
       } else {
         end = toFinite(end);
       }
       number = toNumber(number);
       return baseInRange(number, start, end);
     }
 
     /**
      * Produces a random number between the inclusive `lower` and `upper` bounds.
      * If only one argument is provided a number between `0` and the given number
      * is returned. If `floating` is `true`, or either `lower` or `upper` are
      * floats, a floating-point number is returned instead of an integer.
      *
      * **Note:** JavaScript follows the IEEE-754 standard for resolving
      * floating-point values which can produce unexpected results.
      *
      * @static
      * @memberOf _
      * @since 0.7.0
      * @category Number
      * @param {number} [lower=0] The lower bound.
      * @param {number} [upper=1] The upper bound.
      * @param {boolean} [floating] Specify returning a floating-point number.
      * @returns {number} Returns the random number.
      * @example
      *
      * _.random(0, 5);
      * // => an integer between 0 and 5
      *
      * _.random(5);
      * // => also an integer between 0 and 5
      *
      * _.random(5, true);
      * // => a floating-point number between 0 and 5
      *
      * _.random(1.2, 5.2);
      * // => a floating-point number between 1.2 and 5.2
      */
     function random(lower, upper, floating) {
       if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {
         upper = floating = undefined;
       }
       if (floating === undefined) {
         if (typeof upper == 'boolean') {
           floating = upper;
           upper = undefined;
         }
         else if (typeof lower == 'boolean') {
           floating = lower;
           lower = undefined;
         }
       }
       if (lower === undefined && upper === undefined) {
         lower = 0;
         upper = 1;
       }
       else {
         lower = toFinite(lower);
         if (upper === undefined) {
           upper = lower;
           lower = 0;
         } else {
           upper = toFinite(upper);
         }
       }
       if (lower > upper) {
         var temp = lower;
         lower = upper;
         upper = temp;
       }
       if (floating || lower % 1 || upper % 1) {
         var rand = nativeRandom();
         return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);
       }
       return baseRandom(lower, upper);
     }
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category String
      * @param {string} [string=''] The string to convert.
      * @returns {string} Returns the camel cased string.
      * @example
      *
      * _.camelCase('Foo Bar');
      * // => 'fooBar'
      *
      * _.camelCase('--foo-bar--');
      * // => 'fooBar'
      *
      * _.camelCase('__FOO_BAR__');
      * // => 'fooBar'
      */
     var camelCase = createCompounder(function(result, word, index) {
       word = word.toLowerCase();
       return result + (index ? capitalize(word) : word);
     });
 
     /**
      * Converts the first character of `string` to upper case and the remaining
      * to lower case.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category String
      * @param {string} [string=''] The string to capitalize.
      * @returns {string} Returns the capitalized string.
      * @example
      *
      * _.capitalize('FRED');
      * // => 'Fred'
      */
     function capitalize(string) {
       return upperFirst(toString(string).toLowerCase());
     }
 
     /**
      * Deburrs `string` by converting
      * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
      * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
      * letters to basic Latin letters and removing
      * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category String
      * @param {string} [string=''] The string to deburr.
      * @returns {string} Returns the deburred string.
      * @example
      *
      * _.deburr('déjà vu');
      * // => 'deja vu'
      */
     function deburr(string) {
       string = toString(string);
       return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
     }
 
     /**
      * Checks if `string` ends with the given target string.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category String
      * @param {string} [string=''] The string to inspect.
      * @param {string} [target] The string to search for.
      * @param {number} [position=string.length] The position to search up to.
      * @returns {boolean} Returns `true` if `string` ends with `target`,
      *  else `false`.
      * @example
      *
      * _.endsWith('abc', 'c');
      * // => true
      *
      * _.endsWith('abc', 'b');
      * // => false
      *
      * _.endsWith('abc', 'b', 2);
      * // => true
      */
     function endsWith(string, target, position) {
       string = toString(string);
       target = baseToString(target);
 
       var length = string.length;
       position = position === undefined
         ? length
         : baseClamp(toInteger(position), 0, length);
 
       var end = position;
       position -= target.length;
       return position >= 0 && string.slice(position, end) == target;
     }
 
     /**
      * Converts the characters "&", "<", ">", '"', and "'" in `string` to their
      * corresponding HTML entities.
      *
      * **Note:** No other characters are escaped. To escape additional
      * characters use a third-party library like [_he_](https://mths.be/he).
      *
      * Though the ">" character is escaped for symmetry, characters like
      * ">" and "/" don't need escaping in HTML and have no special meaning
      * unless they're part of a tag or unquoted attribute value. See
      * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)
      * (under "semi-related fun fact") for more details.
      *
      * When working with HTML you should always
      * [quote attribute values](http://wonko.com/post/html-escaping) to reduce
      * XSS vectors.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category String
      * @param {string} [string=''] The string to escape.
      * @returns {string} Returns the escaped string.
      * @example
      *
      * _.escape('fred, barney, & pebbles');
      * // => 'fred, barney, &amp; pebbles'
      */
     function escape(string) {
       string = toString(string);
       return (string && reHasUnescapedHtml.test(string))
         ? string.replace(reUnescapedHtml, escapeHtmlChar)
         : string;
     }
 
     /**
      * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+",
      * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category String
      * @param {string} [string=''] The string to escape.
      * @returns {string} Returns the escaped string.
      * @example
      *
      * _.escapeRegExp('[lodash](https://lodash.com/)');
      * // => '\[lodash\]\(https://lodash\.com/\)'
      */
     function escapeRegExp(string) {
       string = toString(string);
       return (string && reHasRegExpChar.test(string))
         ? string.replace(reRegExpChar, '\\$&')
         : string;
     }
 
     /**
      * Converts `string` to
      * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category String
      * @param {string} [string=''] The string to convert.
      * @returns {string} Returns the kebab cased string.
      * @example
      *
      * _.kebabCase('Foo Bar');
      * // => 'foo-bar'
      *
      * _.kebabCase('fooBar');
      * // => 'foo-bar'
      *
      * _.kebabCase('__FOO_BAR__');
      * // => 'foo-bar'
      */
     var kebabCase = createCompounder(function(result, word, index) {
       return result + (index ? '-' : '') + word.toLowerCase();
     });
 
     /**
      * Converts `string`, as space separated words, to lower case.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category String
      * @param {string} [string=''] The string to convert.
      * @returns {string} Returns the lower cased string.
      * @example
      *
      * _.lowerCase('--Foo-Bar--');
      * // => 'foo bar'
      *
      * _.lowerCase('fooBar');
      * // => 'foo bar'
      *
      * _.lowerCase('__FOO_BAR__');
      * // => 'foo bar'
      */
     var lowerCase = createCompounder(function(result, word, index) {
       return result + (index ? ' ' : '') + word.toLowerCase();
     });
 
     /**
      * Converts the first character of `string` to lower case.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category String
      * @param {string} [string=''] The string to convert.
      * @returns {string} Returns the converted string.
      * @example
      *
      * _.lowerFirst('Fred');
      * // => 'fred'
      *
      * _.lowerFirst('FRED');
      * // => 'fRED'
      */
     var lowerFirst = createCaseFirst('toLowerCase');
 
     /**
      * Pads `string` on the left and right sides if it's shorter than `length`.
      * Padding characters are truncated if they can't be evenly divided by `length`.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category String
      * @param {string} [string=''] The string to pad.
      * @param {number} [length=0] The padding length.
      * @param {string} [chars=' '] The string used as padding.
      * @returns {string} Returns the padded string.
      * @example
      *
      * _.pad('abc', 8);
      * // => '  abc   '
      *
      * _.pad('abc', 8, '_-');
      * // => '_-abc_-_'
      *
      * _.pad('abc', 3);
      * // => 'abc'
      */
     function pad(string, length, chars) {
       string = toString(string);
       length = toInteger(length);
 
       var strLength = length ? stringSize(string) : 0;
       if (!length || strLength >= length) {
         return string;
       }
       var mid = (length - strLength) / 2;
       return (
         createPadding(nativeFloor(mid), chars) +
         string +
         createPadding(nativeCeil(mid), chars)
       );
     }
 
     /**
      * Pads `string` on the right side if it's shorter than `length`. Padding
      * characters are truncated if they exceed `length`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category String
      * @param {string} [string=''] The string to pad.
      * @param {number} [length=0] The padding length.
      * @param {string} [chars=' '] The string used as padding.
      * @returns {string} Returns the padded string.
      * @example
      *
      * _.padEnd('abc', 6);
      * // => 'abc   '
      *
      * _.padEnd('abc', 6, '_-');
      * // => 'abc_-_'
      *
      * _.padEnd('abc', 3);
      * // => 'abc'
      */
     function padEnd(string, length, chars) {
       string = toString(string);
       length = toInteger(length);
 
       var strLength = length ? stringSize(string) : 0;
       return (length && strLength < length)
         ? (string + createPadding(length - strLength, chars))
         : string;
     }
 
     /**
      * Pads `string` on the left side if it's shorter than `length`. Padding
      * characters are truncated if they exceed `length`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category String
      * @param {string} [string=''] The string to pad.
      * @param {number} [length=0] The padding length.
      * @param {string} [chars=' '] The string used as padding.
      * @returns {string} Returns the padded string.
      * @example
      *
      * _.padStart('abc', 6);
      * // => '   abc'
      *
      * _.padStart('abc', 6, '_-');
      * // => '_-_abc'
      *
      * _.padStart('abc', 3);
      * // => 'abc'
      */
     function padStart(string, length, chars) {
       string = toString(string);
       length = toInteger(length);
 
       var strLength = length ? stringSize(string) : 0;
       return (length && strLength < length)
         ? (createPadding(length - strLength, chars) + string)
         : string;
     }
 
     /**
      * Converts `string` to an integer of the specified radix. If `radix` is
      * `undefined` or `0`, a `radix` of `10` is used unless `value` is a
      * hexadecimal, in which case a `radix` of `16` is used.
      *
      * **Note:** This method aligns with the
      * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.
      *
      * @static
      * @memberOf _
      * @since 1.1.0
      * @category String
      * @param {string} string The string to convert.
      * @param {number} [radix=10] The radix to interpret `value` by.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {number} Returns the converted integer.
      * @example
      *
      * _.parseInt('08');
      * // => 8
      *
      * _.map(['6', '08', '10'], _.parseInt);
      * // => [6, 8, 10]
      */
     function parseInt(string, radix, guard) {
       if (guard || radix == null) {
         radix = 0;
       } else if (radix) {
         radix = +radix;
       }
       return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);
     }
 
     /**
      * Repeats the given string `n` times.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category String
      * @param {string} [string=''] The string to repeat.
      * @param {number} [n=1] The number of times to repeat the string.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {string} Returns the repeated string.
      * @example
      *
      * _.repeat('*', 3);
      * // => '***'
      *
      * _.repeat('abc', 2);
      * // => 'abcabc'
      *
      * _.repeat('abc', 0);
      * // => ''
      */
     function repeat(string, n, guard) {
       if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {
         n = 1;
       } else {
         n = toInteger(n);
       }
       return baseRepeat(toString(string), n);
     }
 
     /**
      * Replaces matches for `pattern` in `string` with `replacement`.
      *
      * **Note:** This method is based on
      * [`String#replace`](https://mdn.io/String/replace).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category String
      * @param {string} [string=''] The string to modify.
      * @param {RegExp|string} pattern The pattern to replace.
      * @param {Function|string} replacement The match replacement.
      * @returns {string} Returns the modified string.
      * @example
      *
      * _.replace('Hi Fred', 'Fred', 'Barney');
      * // => 'Hi Barney'
      */
     function replace() {
       var args = arguments,
           string = toString(args[0]);
 
       return args.length < 3 ? string : string.replace(args[1], args[2]);
     }
 
     /**
      * Converts `string` to
      * [snake case](https://en.wikipedia.org/wiki/Snake_case).
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category String
      * @param {string} [string=''] The string to convert.
      * @returns {string} Returns the snake cased string.
      * @example
      *
      * _.snakeCase('Foo Bar');
      * // => 'foo_bar'
      *
      * _.snakeCase('fooBar');
      * // => 'foo_bar'
      *
      * _.snakeCase('--FOO-BAR--');
      * // => 'foo_bar'
      */
     var snakeCase = createCompounder(function(result, word, index) {
       return result + (index ? '_' : '') + word.toLowerCase();
     });
 
     /**
      * Splits `string` by `separator`.
      *
      * **Note:** This method is based on
      * [`String#split`](https://mdn.io/String/split).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category String
      * @param {string} [string=''] The string to split.
      * @param {RegExp|string} separator The separator pattern to split by.
      * @param {number} [limit] The length to truncate results to.
      * @returns {Array} Returns the string segments.
      * @example
      *
      * _.split('a-b-c', '-', 2);
      * // => ['a', 'b']
      */
     function split(string, separator, limit) {
       if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {
         separator = limit = undefined;
       }
       limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;
       if (!limit) {
         return [];
       }
       string = toString(string);
       if (string && (
             typeof separator == 'string' ||
             (separator != null && !isRegExp(separator))
           )) {
         separator = baseToString(separator);
         if (!separator && hasUnicode(string)) {
           return castSlice(stringToArray(string), 0, limit);
         }
       }
       return string.split(separator, limit);
     }
 
     /**
      * Converts `string` to
      * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).
      *
      * @static
      * @memberOf _
      * @since 3.1.0
      * @category String
      * @param {string} [string=''] The string to convert.
      * @returns {string} Returns the start cased string.
      * @example
      *
      * _.startCase('--foo-bar--');
      * // => 'Foo Bar'
      *
      * _.startCase('fooBar');
      * // => 'Foo Bar'
      *
      * _.startCase('__FOO_BAR__');
      * // => 'FOO BAR'
      */
     var startCase = createCompounder(function(result, word, index) {
       return result + (index ? ' ' : '') + upperFirst(word);
     });
 
     /**
      * Checks if `string` starts with the given target string.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category String
      * @param {string} [string=''] The string to inspect.
      * @param {string} [target] The string to search for.
      * @param {number} [position=0] The position to search from.
      * @returns {boolean} Returns `true` if `string` starts with `target`,
      *  else `false`.
      * @example
      *
      * _.startsWith('abc', 'a');
      * // => true
      *
      * _.startsWith('abc', 'b');
      * // => false
      *
      * _.startsWith('abc', 'b', 1);
      * // => true
      */
     function startsWith(string, target, position) {
       string = toString(string);
       position = position == null
         ? 0
         : baseClamp(toInteger(position), 0, string.length);
 
       target = baseToString(target);
       return string.slice(position, position + target.length) == target;
     }
 
     /**
      * Creates a compiled template function that can interpolate data properties
      * in "interpolate" delimiters, HTML-escape interpolated data properties in
      * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data
      * properties may be accessed as free variables in the template. If a setting
      * object is given, it takes precedence over `_.templateSettings` values.
      *
      * **Note:** In the development build `_.template` utilizes
      * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
      * for easier debugging.
      *
      * For more information on precompiling templates see
      * [lodash's custom builds documentation](https://lodash.com/custom-builds).
      *
      * For more information on Chrome extension sandboxes see
      * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category String
      * @param {string} [string=''] The template string.
      * @param {Object} [options={}] The options object.
      * @param {RegExp} [options.escape=_.templateSettings.escape]
      *  The HTML "escape" delimiter.
      * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]
      *  The "evaluate" delimiter.
      * @param {Object} [options.imports=_.templateSettings.imports]
      *  An object to import into the template as free variables.
      * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]
      *  The "interpolate" delimiter.
      * @param {string} [options.sourceURL='lodash.templateSources[n]']
      *  The sourceURL of the compiled template.
      * @param {string} [options.variable='obj']
      *  The data object variable name.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {Function} Returns the compiled template function.
      * @example
      *
      * // Use the "interpolate" delimiter to create a compiled template.
      * var compiled = _.template('hello <%= user %>!');
      * compiled({ 'user': 'fred' });
      * // => 'hello fred!'
      *
      * // Use the HTML "escape" delimiter to escape data property values.
      * var compiled = _.template('<b><%- value %></b>');
      * compiled({ 'value': '<script>' });
      * // => '<b>&lt;script&gt;</b>'
      *
      * // Use the "evaluate" delimiter to execute JavaScript and generate HTML.
      * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');
      * compiled({ 'users': ['fred', 'barney'] });
      * // => '<li>fred</li><li>barney</li>'
      *
      * // Use the internal `print` function in "evaluate" delimiters.
      * var compiled = _.template('<% print("hello " + user); %>!');
      * compiled({ 'user': 'barney' });
      * // => 'hello barney!'
      *
      * // Use the ES template literal delimiter as an "interpolate" delimiter.
      * // Disable support by replacing the "interpolate" delimiter.
      * var compiled = _.template('hello ${ user }!');
      * compiled({ 'user': 'pebbles' });
      * // => 'hello pebbles!'
      *
      * // Use backslashes to treat delimiters as plain text.
      * var compiled = _.template('<%= "\\<%- value %\\>" %>');
      * compiled({ 'value': 'ignored' });
      * // => '<%- value %>'
      *
      * // Use the `imports` option to import `jQuery` as `jq`.
      * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';
      * var compiled = _.template(text, { 'imports': { 'jq': jQuery } });
      * compiled({ 'users': ['fred', 'barney'] });
      * // => '<li>fred</li><li>barney</li>'
      *
      * // Use the `sourceURL` option to specify a custom sourceURL for the template.
      * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });
      * compiled(data);
      * // => Find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector.
      *
      * // Use the `variable` option to ensure a with-statement isn't used in the compiled template.
      * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });
      * compiled.source;
      * // => function(data) {
      * //   var __t, __p = '';
      * //   __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';
      * //   return __p;
      * // }
      *
      * // Use custom template delimiters.
      * _.templateSettings.interpolate = /{{([\s\S]+?)}}/g;
      * var compiled = _.template('hello {{ user }}!');
      * compiled({ 'user': 'mustache' });
      * // => 'hello mustache!'
      *
      * // Use the `source` property to inline compiled templates for meaningful
      * // line numbers in error messages and stack traces.
      * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\
      *   var JST = {\
      *     "main": ' + _.template(mainText).source + '\
      *   };\
      * ');
      */
     function template(string, options, guard) {
       // Based on John Resig's `tmpl` implementation
       // (http://ejohn.org/blog/javascript-micro-templating/)
       // and Laura Doktorova's doT.js (https://github.com/olado/doT).
       var settings = lodash.templateSettings;
 
       if (guard && isIterateeCall(string, options, guard)) {
         options = undefined;
       }
       string = toString(string);
       options = assignInWith({}, options, settings, customDefaultsAssignIn);
 
       var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),
           importsKeys = keys(imports),
           importsValues = baseValues(imports, importsKeys);
 
       var isEscaping,
           isEvaluating,
           index = 0,
           interpolate = options.interpolate || reNoMatch,
           source = "__p += '";
 
       // Compile the regexp to match each delimiter.
       var reDelimiters = RegExp(
         (options.escape || reNoMatch).source + '|' +
         interpolate.source + '|' +
         (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +
         (options.evaluate || reNoMatch).source + '|$'
       , 'g');
 
       // Use a sourceURL for easier debugging.
       // The sourceURL gets injected into the source that's eval-ed, so be careful
       // to normalize all kinds of whitespace, so e.g. newlines (and unicode versions of it) can't sneak in
       // and escape the comment, thus injecting code that gets evaled.
       var sourceURL = '//# sourceURL=' +
         (hasOwnProperty.call(options, 'sourceURL')
           ? (options.sourceURL + '').replace(/\s/g, ' ')
           : ('lodash.templateSources[' + (++templateCounter) + ']')
         ) + '\n';
 
       string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
         interpolateValue || (interpolateValue = esTemplateValue);
 
         // Escape characters that can't be included in string literals.
         source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar);
 
         // Replace delimiters with snippets.
         if (escapeValue) {
           isEscaping = true;
           source += "' +\n__e(" + escapeValue + ") +\n'";
         }
         if (evaluateValue) {
           isEvaluating = true;
           source += "';\n" + evaluateValue + ";\n__p += '";
         }
         if (interpolateValue) {
           source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
         }
         index = offset + match.length;
 
         // The JS engine embedded in Adobe products needs `match` returned in
         // order to produce the correct `offset` value.
         return match;
       });
 
       source += "';\n";
 
       // If `variable` is not specified wrap a with-statement around the generated
       // code to add the data object to the top of the scope chain.
       var variable = hasOwnProperty.call(options, 'variable') && options.variable;
       if (!variable) {
         source = 'with (obj) {\n' + source + '\n}\n';
       }
       // Throw an error if a forbidden character was found in `variable`, to prevent
       // potential command injection attacks.
       else if (reForbiddenIdentifierChars.test(variable)) {
         throw new Error(INVALID_TEMPL_VAR_ERROR_TEXT);
       }
 
       // Cleanup code by stripping empty strings.
       source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)
         .replace(reEmptyStringMiddle, '$1')
         .replace(reEmptyStringTrailing, '$1;');
 
       // Frame code as the function body.
       source = 'function(' + (variable || 'obj') + ') {\n' +
         (variable
           ? ''
           : 'obj || (obj = {});\n'
         ) +
         "var __t, __p = ''" +
         (isEscaping
            ? ', __e = _.escape'
            : ''
         ) +
         (isEvaluating
           ? ', __j = Array.prototype.join;\n' +
             "function print() { __p += __j.call(arguments, '') }\n"
           : ';\n'
         ) +
         source +
         'return __p\n}';
 
       var result = attempt(function() {
         return Function(importsKeys, sourceURL + 'return ' + source)
           .apply(undefined, importsValues);
       });
 
       // Provide the compiled function's source by its `toString` method or
       // the `source` property as a convenience for inlining compiled templates.
       result.source = source;
       if (isError(result)) {
         throw result;
       }
       return result;
     }
 
     /**
      * Converts `string`, as a whole, to lower case just like
      * [String#toLowerCase](https://mdn.io/toLowerCase).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category String
      * @param {string} [string=''] The string to convert.
      * @returns {string} Returns the lower cased string.
      * @example
      *
      * _.toLower('--Foo-Bar--');
      * // => '--foo-bar--'
      *
      * _.toLower('fooBar');
      * // => 'foobar'
      *
      * _.toLower('__FOO_BAR__');
      * // => '__foo_bar__'
      */
     function toLower(value) {
       return toString(value).toLowerCase();
     }
 
     /**
      * Converts `string`, as a whole, to upper case just like
      * [String#toUpperCase](https://mdn.io/toUpperCase).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category String
      * @param {string} [string=''] The string to convert.
      * @returns {string} Returns the upper cased string.
      * @example
      *
      * _.toUpper('--foo-bar--');
      * // => '--FOO-BAR--'
      *
      * _.toUpper('fooBar');
      * // => 'FOOBAR'
      *
      * _.toUpper('__foo_bar__');
      * // => '__FOO_BAR__'
      */
     function toUpper(value) {
       return toString(value).toUpperCase();
     }
 
     /**
      * Removes leading and trailing whitespace or specified characters from `string`.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category String
      * @param {string} [string=''] The string to trim.
      * @param {string} [chars=whitespace] The characters to trim.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {string} Returns the trimmed string.
      * @example
      *
      * _.trim('  abc  ');
      * // => 'abc'
      *
      * _.trim('-_-abc-_-', '_-');
      * // => 'abc'
      *
      * _.map(['  foo  ', '  bar  '], _.trim);
      * // => ['foo', 'bar']
      */
     function trim(string, chars, guard) {
       string = toString(string);
       if (string && (guard || chars === undefined)) {
         return baseTrim(string);
       }
       if (!string || !(chars = baseToString(chars))) {
         return string;
       }
       var strSymbols = stringToArray(string),
           chrSymbols = stringToArray(chars),
           start = charsStartIndex(strSymbols, chrSymbols),
           end = charsEndIndex(strSymbols, chrSymbols) + 1;
 
       return castSlice(strSymbols, start, end).join('');
     }
 
     /**
      * Removes trailing whitespace or specified characters from `string`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category String
      * @param {string} [string=''] The string to trim.
      * @param {string} [chars=whitespace] The characters to trim.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {string} Returns the trimmed string.
      * @example
      *
      * _.trimEnd('  abc  ');
      * // => '  abc'
      *
      * _.trimEnd('-_-abc-_-', '_-');
      * // => '-_-abc'
      */
     function trimEnd(string, chars, guard) {
       string = toString(string);
       if (string && (guard || chars === undefined)) {
         return string.slice(0, trimmedEndIndex(string) + 1);
       }
       if (!string || !(chars = baseToString(chars))) {
         return string;
       }
       var strSymbols = stringToArray(string),
           end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;
 
       return castSlice(strSymbols, 0, end).join('');
     }
 
     /**
      * Removes leading whitespace or specified characters from `string`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category String
      * @param {string} [string=''] The string to trim.
      * @param {string} [chars=whitespace] The characters to trim.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {string} Returns the trimmed string.
      * @example
      *
      * _.trimStart('  abc  ');
      * // => 'abc  '
      *
      * _.trimStart('-_-abc-_-', '_-');
      * // => 'abc-_-'
      */
     function trimStart(string, chars, guard) {
       string = toString(string);
       if (string && (guard || chars === undefined)) {
         return string.replace(reTrimStart, '');
       }
       if (!string || !(chars = baseToString(chars))) {
         return string;
       }
       var strSymbols = stringToArray(string),
           start = charsStartIndex(strSymbols, stringToArray(chars));
 
       return castSlice(strSymbols, start).join('');
     }
 
     /**
      * Truncates `string` if it's longer than the given maximum string length.
      * The last characters of the truncated string are replaced with the omission
      * string which defaults to "...".
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category String
      * @param {string} [string=''] The string to truncate.
      * @param {Object} [options={}] The options object.
      * @param {number} [options.length=30] The maximum string length.
      * @param {string} [options.omission='...'] The string to indicate text is omitted.
      * @param {RegExp|string} [options.separator] The separator pattern to truncate to.
      * @returns {string} Returns the truncated string.
      * @example
      *
      * _.truncate('hi-diddly-ho there, neighborino');
      * // => 'hi-diddly-ho there, neighbo...'
      *
      * _.truncate('hi-diddly-ho there, neighborino', {
      *   'length': 24,
      *   'separator': ' '
      * });
      * // => 'hi-diddly-ho there,...'
      *
      * _.truncate('hi-diddly-ho there, neighborino', {
      *   'length': 24,
      *   'separator': /,? +/
      * });
      * // => 'hi-diddly-ho there...'
      *
      * _.truncate('hi-diddly-ho there, neighborino', {
      *   'omission': ' [...]'
      * });
      * // => 'hi-diddly-ho there, neig [...]'
      */
     function truncate(string, options) {
       var length = DEFAULT_TRUNC_LENGTH,
           omission = DEFAULT_TRUNC_OMISSION;
 
       if (isObject(options)) {
         var separator = 'separator' in options ? options.separator : separator;
         length = 'length' in options ? toInteger(options.length) : length;
         omission = 'omission' in options ? baseToString(options.omission) : omission;
       }
       string = toString(string);
 
       var strLength = string.length;
       if (hasUnicode(string)) {
         var strSymbols = stringToArray(string);
         strLength = strSymbols.length;
       }
       if (length >= strLength) {
         return string;
       }
       var end = length - stringSize(omission);
       if (end < 1) {
         return omission;
       }
       var result = strSymbols
         ? castSlice(strSymbols, 0, end).join('')
         : string.slice(0, end);
 
       if (separator === undefined) {
         return result + omission;
       }
       if (strSymbols) {
         end += (result.length - end);
       }
       if (isRegExp(separator)) {
         if (string.slice(end).search(separator)) {
           var match,
               substring = result;
 
           if (!separator.global) {
             separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g');
           }
           separator.lastIndex = 0;
           while ((match = separator.exec(substring))) {
             var newEnd = match.index;
           }
           result = result.slice(0, newEnd === undefined ? end : newEnd);
         }
       } else if (string.indexOf(baseToString(separator), end) != end) {
         var index = result.lastIndexOf(separator);
         if (index > -1) {
           result = result.slice(0, index);
         }
       }
       return result + omission;
     }
 
     /**
      * The inverse of `_.escape`; this method converts the HTML entities
      * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to
      * their corresponding characters.
      *
      * **Note:** No other HTML entities are unescaped. To unescape additional
      * HTML entities use a third-party library like [_he_](https://mths.be/he).
      *
      * @static
      * @memberOf _
      * @since 0.6.0
      * @category String
      * @param {string} [string=''] The string to unescape.
      * @returns {string} Returns the unescaped string.
      * @example
      *
      * _.unescape('fred, barney, &amp; pebbles');
      * // => 'fred, barney, & pebbles'
      */
     function unescape(string) {
       string = toString(string);
       return (string && reHasEscapedHtml.test(string))
         ? string.replace(reEscapedHtml, unescapeHtmlChar)
         : string;
     }
 
     /**
      * Converts `string`, as space separated words, to upper case.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category String
      * @param {string} [string=''] The string to convert.
      * @returns {string} Returns the upper cased string.
      * @example
      *
      * _.upperCase('--foo-bar');
      * // => 'FOO BAR'
      *
      * _.upperCase('fooBar');
      * // => 'FOO BAR'
      *
      * _.upperCase('__foo_bar__');
      * // => 'FOO BAR'
      */
     var upperCase = createCompounder(function(result, word, index) {
       return result + (index ? ' ' : '') + word.toUpperCase();
     });
 
     /**
      * Converts the first character of `string` to upper case.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category String
      * @param {string} [string=''] The string to convert.
      * @returns {string} Returns the converted string.
      * @example
      *
      * _.upperFirst('fred');
      * // => 'Fred'
      *
      * _.upperFirst('FRED');
      * // => 'FRED'
      */
     var upperFirst = createCaseFirst('toUpperCase');
 
     /**
      * Splits `string` into an array of its words.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category String
      * @param {string} [string=''] The string to inspect.
      * @param {RegExp|string} [pattern] The pattern to match words.
      * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
      * @returns {Array} Returns the words of `string`.
      * @example
      *
      * _.words('fred, barney, & pebbles');
      * // => ['fred', 'barney', 'pebbles']
      *
      * _.words('fred, barney, & pebbles', /[^, ]+/g);
      * // => ['fred', 'barney', '&', 'pebbles']
      */
     function words(string, pattern, guard) {
       string = toString(string);
       pattern = guard ? undefined : pattern;
 
       if (pattern === undefined) {
         return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);
       }
       return string.match(pattern) || [];
     }
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Attempts to invoke `func`, returning either the result or the caught error
      * object. Any additional arguments are provided to `func` when it's invoked.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Util
      * @param {Function} func The function to attempt.
      * @param {...*} [args] The arguments to invoke `func` with.
      * @returns {*} Returns the `func` result or error object.
      * @example
      *
      * // Avoid throwing errors for invalid selectors.
      * var elements = _.attempt(function(selector) {
      *   return document.querySelectorAll(selector);
      * }, '>_>');
      *
      * if (_.isError(elements)) {
      *   elements = [];
      * }
      */
     var attempt = baseRest(function(func, args) {
       try {
         return apply(func, undefined, args);
       } catch (e) {
         return isError(e) ? e : new Error(e);
       }
     });
 
     /**
      * Binds methods of an object to the object itself, overwriting the existing
      * method.
      *
      * **Note:** This method doesn't set the "length" property of bound functions.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Util
      * @param {Object} object The object to bind and assign the bound methods to.
      * @param {...(string|string[])} methodNames The object method names to bind.
      * @returns {Object} Returns `object`.
      * @example
      *
      * var view = {
      *   'label': 'docs',
      *   'click': function() {
      *     console.log('clicked ' + this.label);
      *   }
      * };
      *
      * _.bindAll(view, ['click']);
      * jQuery(element).on('click', view.click);
      * // => Logs 'clicked docs' when clicked.
      */
     var bindAll = flatRest(function(object, methodNames) {
       arrayEach(methodNames, function(key) {
         key = toKey(key);
         baseAssignValue(object, key, bind(object[key], object));
       });
       return object;
     });
 
     /**
      * Creates a function that iterates over `pairs` and invokes the corresponding
      * function of the first predicate to return truthy. The predicate-function
      * pairs are invoked with the `this` binding and arguments of the created
      * function.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Util
      * @param {Array} pairs The predicate-function pairs.
      * @returns {Function} Returns the new composite function.
      * @example
      *
      * var func = _.cond([
      *   [_.matches({ 'a': 1 }),           _.constant('matches A')],
      *   [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],
      *   [_.stubTrue,                      _.constant('no match')]
      * ]);
      *
      * func({ 'a': 1, 'b': 2 });
      * // => 'matches A'
      *
      * func({ 'a': 0, 'b': 1 });
      * // => 'matches B'
      *
      * func({ 'a': '1', 'b': '2' });
      * // => 'no match'
      */
     function cond(pairs) {
       var length = pairs == null ? 0 : pairs.length,
           toIteratee = getIteratee();
 
       pairs = !length ? [] : arrayMap(pairs, function(pair) {
         if (typeof pair[1] != 'function') {
           throw new TypeError(FUNC_ERROR_TEXT);
         }
         return [toIteratee(pair[0]), pair[1]];
       });
 
       return baseRest(function(args) {
         var index = -1;
         while (++index < length) {
           var pair = pairs[index];
           if (apply(pair[0], this, args)) {
             return apply(pair[1], this, args);
           }
         }
       });
     }
 
     /**
      * Creates a function that invokes the predicate properties of `source` with
      * the corresponding property values of a given object, returning `true` if
      * all predicates return truthy, else `false`.
      *
      * **Note:** The created function is equivalent to `_.conformsTo` with
      * `source` partially applied.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Util
      * @param {Object} source The object of property predicates to conform to.
      * @returns {Function} Returns the new spec function.
      * @example
      *
      * var objects = [
      *   { 'a': 2, 'b': 1 },
      *   { 'a': 1, 'b': 2 }
      * ];
      *
      * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } }));
      * // => [{ 'a': 1, 'b': 2 }]
      */
     function conforms(source) {
       return baseConforms(baseClone(source, CLONE_DEEP_FLAG));
     }
 
     /**
      * Creates a function that returns `value`.
      *
      * @static
      * @memberOf _
      * @since 2.4.0
      * @category Util
      * @param {*} value The value to return from the new function.
      * @returns {Function} Returns the new constant function.
      * @example
      *
      * var objects = _.times(2, _.constant({ 'a': 1 }));
      *
      * console.log(objects);
      * // => [{ 'a': 1 }, { 'a': 1 }]
      *
      * console.log(objects[0] === objects[1]);
      * // => true
      */
     function constant(value) {
       return function() {
         return value;
       };
     }
 
     /**
      * Checks `value` to determine whether a default value should be returned in
      * its place. The `defaultValue` is returned if `value` is `NaN`, `null`,
      * or `undefined`.
      *
      * @static
      * @memberOf _
      * @since 4.14.0
      * @category Util
      * @param {*} value The value to check.
      * @param {*} defaultValue The default value.
      * @returns {*} Returns the resolved value.
      * @example
      *
      * _.defaultTo(1, 10);
      * // => 1
      *
      * _.defaultTo(undefined, 10);
      * // => 10
      */
     function defaultTo(value, defaultValue) {
       return (value == null || value !== value) ? defaultValue : value;
     }
 
     /**
      * Creates a function that returns the result of invoking the given functions
      * with the `this` binding of the created function, where each successive
      * invocation is supplied the return value of the previous.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Util
      * @param {...(Function|Function[])} [funcs] The functions to invoke.
      * @returns {Function} Returns the new composite function.
      * @see _.flowRight
      * @example
      *
      * function square(n) {
      *   return n * n;
      * }
      *
      * var addSquare = _.flow([_.add, square]);
      * addSquare(1, 2);
      * // => 9
      */
     var flow = createFlow();
 
     /**
      * This method is like `_.flow` except that it creates a function that
      * invokes the given functions from right to left.
      *
      * @static
      * @since 3.0.0
      * @memberOf _
      * @category Util
      * @param {...(Function|Function[])} [funcs] The functions to invoke.
      * @returns {Function} Returns the new composite function.
      * @see _.flow
      * @example
      *
      * function square(n) {
      *   return n * n;
      * }
      *
      * var addSquare = _.flowRight([square, _.add]);
      * addSquare(1, 2);
      * // => 9
      */
     var flowRight = createFlow(true);
 
     /**
      * This method returns the first argument it receives.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Util
      * @param {*} value Any value.
      * @returns {*} Returns `value`.
      * @example
      *
      * var object = { 'a': 1 };
      *
      * console.log(_.identity(object) === object);
      * // => true
      */
     function identity(value) {
       return value;
     }
 
     /**
      * Creates a function that invokes `func` with the arguments of the created
      * function. If `func` is a property name, the created function returns the
      * property value for a given element. If `func` is an array or object, the
      * created function returns `true` for elements that contain the equivalent
      * source properties, otherwise it returns `false`.
      *
      * @static
      * @since 4.0.0
      * @memberOf _
      * @category Util
      * @param {*} [func=_.identity] The value to convert to a callback.
      * @returns {Function} Returns the callback.
      * @example
      *
      * var users = [
      *   { 'user': 'barney', 'age': 36, 'active': true },
      *   { 'user': 'fred',   'age': 40, 'active': false }
      * ];
      *
      * // The `_.matches` iteratee shorthand.
      * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));
      * // => [{ 'user': 'barney', 'age': 36, 'active': true }]
      *
      * // The `_.matchesProperty` iteratee shorthand.
      * _.filter(users, _.iteratee(['user', 'fred']));
      * // => [{ 'user': 'fred', 'age': 40 }]
      *
      * // The `_.property` iteratee shorthand.
      * _.map(users, _.iteratee('user'));
      * // => ['barney', 'fred']
      *
      * // Create custom iteratee shorthands.
      * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {
      *   return !_.isRegExp(func) ? iteratee(func) : function(string) {
      *     return func.test(string);
      *   };
      * });
      *
      * _.filter(['abc', 'def'], /ef/);
      * // => ['def']
      */
     function iteratee(func) {
       return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));
     }
 
     /**
      * Creates a function that performs a partial deep comparison between a given
      * object and `source`, returning `true` if the given object has equivalent
      * property values, else `false`.
      *
      * **Note:** The created function is equivalent to `_.isMatch` with `source`
      * partially applied.
      *
      * Partial comparisons will match empty array and empty object `source`
      * values against any array or object value, respectively. See `_.isEqual`
      * for a list of supported value comparisons.
      *
      * **Note:** Multiple values can be checked by combining several matchers
      * using `_.overSome`
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Util
      * @param {Object} source The object of property values to match.
      * @returns {Function} Returns the new spec function.
      * @example
      *
      * var objects = [
      *   { 'a': 1, 'b': 2, 'c': 3 },
      *   { 'a': 4, 'b': 5, 'c': 6 }
      * ];
      *
      * _.filter(objects, _.matches({ 'a': 4, 'c': 6 }));
      * // => [{ 'a': 4, 'b': 5, 'c': 6 }]
      *
      * // Checking for several possible values
      * _.filter(objects, _.overSome([_.matches({ 'a': 1 }), _.matches({ 'a': 4 })]));
      * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]
      */
     function matches(source) {
       return baseMatches(baseClone(source, CLONE_DEEP_FLAG));
     }
 
     /**
      * Creates a function that performs a partial deep comparison between the
      * value at `path` of a given object to `srcValue`, returning `true` if the
      * object value is equivalent, else `false`.
      *
      * **Note:** Partial comparisons will match empty array and empty object
      * `srcValue` values against any array or object value, respectively. See
      * `_.isEqual` for a list of supported value comparisons.
      *
      * **Note:** Multiple values can be checked by combining several matchers
      * using `_.overSome`
      *
      * @static
      * @memberOf _
      * @since 3.2.0
      * @category Util
      * @param {Array|string} path The path of the property to get.
      * @param {*} srcValue The value to match.
      * @returns {Function} Returns the new spec function.
      * @example
      *
      * var objects = [
      *   { 'a': 1, 'b': 2, 'c': 3 },
      *   { 'a': 4, 'b': 5, 'c': 6 }
      * ];
      *
      * _.find(objects, _.matchesProperty('a', 4));
      * // => { 'a': 4, 'b': 5, 'c': 6 }
      *
      * // Checking for several possible values
      * _.filter(objects, _.overSome([_.matchesProperty('a', 1), _.matchesProperty('a', 4)]));
      * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]
      */
     function matchesProperty(path, srcValue) {
       return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG));
     }
 
     /**
      * Creates a function that invokes the method at `path` of a given object.
      * Any additional arguments are provided to the invoked method.
      *
      * @static
      * @memberOf _
      * @since 3.7.0
      * @category Util
      * @param {Array|string} path The path of the method to invoke.
      * @param {...*} [args] The arguments to invoke the method with.
      * @returns {Function} Returns the new invoker function.
      * @example
      *
      * var objects = [
      *   { 'a': { 'b': _.constant(2) } },
      *   { 'a': { 'b': _.constant(1) } }
      * ];
      *
      * _.map(objects, _.method('a.b'));
      * // => [2, 1]
      *
      * _.map(objects, _.method(['a', 'b']));
      * // => [2, 1]
      */
     var method = baseRest(function(path, args) {
       return function(object) {
         return baseInvoke(object, path, args);
       };
     });
 
     /**
      * The opposite of `_.method`; this method creates a function that invokes
      * the method at a given path of `object`. Any additional arguments are
      * provided to the invoked method.
      *
      * @static
      * @memberOf _
      * @since 3.7.0
      * @category Util
      * @param {Object} object The object to query.
      * @param {...*} [args] The arguments to invoke the method with.
      * @returns {Function} Returns the new invoker function.
      * @example
      *
      * var array = _.times(3, _.constant),
      *     object = { 'a': array, 'b': array, 'c': array };
      *
      * _.map(['a[2]', 'c[0]'], _.methodOf(object));
      * // => [2, 0]
      *
      * _.map([['a', '2'], ['c', '0']], _.methodOf(object));
      * // => [2, 0]
      */
     var methodOf = baseRest(function(object, args) {
       return function(path) {
         return baseInvoke(object, path, args);
       };
     });
 
     /**
      * Adds all own enumerable string keyed function properties of a source
      * object to the destination object. If `object` is a function, then methods
      * are added to its prototype as well.
      *
      * **Note:** Use `_.runInContext` to create a pristine `lodash` function to
      * avoid conflicts caused by modifying the original.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Util
      * @param {Function|Object} [object=lodash] The destination object.
      * @param {Object} source The object of functions to add.
      * @param {Object} [options={}] The options object.
      * @param {boolean} [options.chain=true] Specify whether mixins are chainable.
      * @returns {Function|Object} Returns `object`.
      * @example
      *
      * function vowels(string) {
      *   return _.filter(string, function(v) {
      *     return /[aeiou]/i.test(v);
      *   });
      * }
      *
      * _.mixin({ 'vowels': vowels });
      * _.vowels('fred');
      * // => ['e']
      *
      * _('fred').vowels().value();
      * // => ['e']
      *
      * _.mixin({ 'vowels': vowels }, { 'chain': false });
      * _('fred').vowels();
      * // => ['e']
      */
     function mixin(object, source, options) {
       var props = keys(source),
           methodNames = baseFunctions(source, props);
 
       if (options == null &&
           !(isObject(source) && (methodNames.length || !props.length))) {
         options = source;
         source = object;
         object = this;
         methodNames = baseFunctions(source, keys(source));
       }
       var chain = !(isObject(options) && 'chain' in options) || !!options.chain,
           isFunc = isFunction(object);
 
       arrayEach(methodNames, function(methodName) {
         var func = source[methodName];
         object[methodName] = func;
         if (isFunc) {
           object.prototype[methodName] = function() {
             var chainAll = this.__chain__;
             if (chain || chainAll) {
               var result = object(this.__wrapped__),
                   actions = result.__actions__ = copyArray(this.__actions__);
 
               actions.push({ 'func': func, 'args': arguments, 'thisArg': object });
               result.__chain__ = chainAll;
               return result;
             }
             return func.apply(object, arrayPush([this.value()], arguments));
           };
         }
       });
 
       return object;
     }
 
     /**
      * Reverts the `_` variable to its previous value and returns a reference to
      * the `lodash` function.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Util
      * @returns {Function} Returns the `lodash` function.
      * @example
      *
      * var lodash = _.noConflict();
      */
     function noConflict() {
       if (root._ === this) {
         root._ = oldDash;
       }
       return this;
     }
 
     /**
      * This method returns `undefined`.
      *
      * @static
      * @memberOf _
      * @since 2.3.0
      * @category Util
      * @example
      *
      * _.times(2, _.noop);
      * // => [undefined, undefined]
      */
     function noop() {
       // No operation performed.
     }
 
     /**
      * Creates a function that gets the argument at index `n`. If `n` is negative,
      * the nth argument from the end is returned.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Util
      * @param {number} [n=0] The index of the argument to return.
      * @returns {Function} Returns the new pass-thru function.
      * @example
      *
      * var func = _.nthArg(1);
      * func('a', 'b', 'c', 'd');
      * // => 'b'
      *
      * var func = _.nthArg(-2);
      * func('a', 'b', 'c', 'd');
      * // => 'c'
      */
     function nthArg(n) {
       n = toInteger(n);
       return baseRest(function(args) {
         return baseNth(args, n);
       });
     }
 
     /**
      * Creates a function that invokes `iteratees` with the arguments it receives
      * and returns their results.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Util
      * @param {...(Function|Function[])} [iteratees=[_.identity]]
      *  The iteratees to invoke.
      * @returns {Function} Returns the new function.
      * @example
      *
      * var func = _.over([Math.max, Math.min]);
      *
      * func(1, 2, 3, 4);
      * // => [4, 1]
      */
     var over = createOver(arrayMap);
 
     /**
      * Creates a function that checks if **all** of the `predicates` return
      * truthy when invoked with the arguments it receives.
      *
      * Following shorthands are possible for providing predicates.
      * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.
      * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Util
      * @param {...(Function|Function[])} [predicates=[_.identity]]
      *  The predicates to check.
      * @returns {Function} Returns the new function.
      * @example
      *
      * var func = _.overEvery([Boolean, isFinite]);
      *
      * func('1');
      * // => true
      *
      * func(null);
      * // => false
      *
      * func(NaN);
      * // => false
      */
     var overEvery = createOver(arrayEvery);
 
     /**
      * Creates a function that checks if **any** of the `predicates` return
      * truthy when invoked with the arguments it receives.
      *
      * Following shorthands are possible for providing predicates.
      * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.
      * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Util
      * @param {...(Function|Function[])} [predicates=[_.identity]]
      *  The predicates to check.
      * @returns {Function} Returns the new function.
      * @example
      *
      * var func = _.overSome([Boolean, isFinite]);
      *
      * func('1');
      * // => true
      *
      * func(null);
      * // => true
      *
      * func(NaN);
      * // => false
      *
      * var matchesFunc = _.overSome([{ 'a': 1 }, { 'a': 2 }])
      * var matchesPropertyFunc = _.overSome([['a', 1], ['a', 2]])
      */
     var overSome = createOver(arraySome);
 
     /**
      * Creates a function that returns the value at `path` of a given object.
      *
      * @static
      * @memberOf _
      * @since 2.4.0
      * @category Util
      * @param {Array|string} path The path of the property to get.
      * @returns {Function} Returns the new accessor function.
      * @example
      *
      * var objects = [
      *   { 'a': { 'b': 2 } },
      *   { 'a': { 'b': 1 } }
      * ];
      *
      * _.map(objects, _.property('a.b'));
      * // => [2, 1]
      *
      * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');
      * // => [1, 2]
      */
     function property(path) {
       return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);
     }
 
     /**
      * The opposite of `_.property`; this method creates a function that returns
      * the value at a given path of `object`.
      *
      * @static
      * @memberOf _
      * @since 3.0.0
      * @category Util
      * @param {Object} object The object to query.
      * @returns {Function} Returns the new accessor function.
      * @example
      *
      * var array = [0, 1, 2],
      *     object = { 'a': array, 'b': array, 'c': array };
      *
      * _.map(['a[2]', 'c[0]'], _.propertyOf(object));
      * // => [2, 0]
      *
      * _.map([['a', '2'], ['c', '0']], _.propertyOf(object));
      * // => [2, 0]
      */
     function propertyOf(object) {
       return function(path) {
         return object == null ? undefined : baseGet(object, path);
       };
     }
 
     /**
      * Creates an array of numbers (positive and/or negative) progressing from
      * `start` up to, but not including, `end`. A step of `-1` is used if a negative
      * `start` is specified without an `end` or `step`. If `end` is not specified,
      * it's set to `start` with `start` then set to `0`.
      *
      * **Note:** JavaScript follows the IEEE-754 standard for resolving
      * floating-point values which can produce unexpected results.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Util
      * @param {number} [start=0] The start of the range.
      * @param {number} end The end of the range.
      * @param {number} [step=1] The value to increment or decrement by.
      * @returns {Array} Returns the range of numbers.
      * @see _.inRange, _.rangeRight
      * @example
      *
      * _.range(4);
      * // => [0, 1, 2, 3]
      *
      * _.range(-4);
      * // => [0, -1, -2, -3]
      *
      * _.range(1, 5);
      * // => [1, 2, 3, 4]
      *
      * _.range(0, 20, 5);
      * // => [0, 5, 10, 15]
      *
      * _.range(0, -4, -1);
      * // => [0, -1, -2, -3]
      *
      * _.range(1, 4, 0);
      * // => [1, 1, 1]
      *
      * _.range(0);
      * // => []
      */
     var range = createRange();
 
     /**
      * This method is like `_.range` except that it populates values in
      * descending order.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Util
      * @param {number} [start=0] The start of the range.
      * @param {number} end The end of the range.
      * @param {number} [step=1] The value to increment or decrement by.
      * @returns {Array} Returns the range of numbers.
      * @see _.inRange, _.range
      * @example
      *
      * _.rangeRight(4);
      * // => [3, 2, 1, 0]
      *
      * _.rangeRight(-4);
      * // => [-3, -2, -1, 0]
      *
      * _.rangeRight(1, 5);
      * // => [4, 3, 2, 1]
      *
      * _.rangeRight(0, 20, 5);
      * // => [15, 10, 5, 0]
      *
      * _.rangeRight(0, -4, -1);
      * // => [-3, -2, -1, 0]
      *
      * _.rangeRight(1, 4, 0);
      * // => [1, 1, 1]
      *
      * _.rangeRight(0);
      * // => []
      */
     var rangeRight = createRange(true);
 
     /**
      * This method returns a new empty array.
      *
      * @static
      * @memberOf _
      * @since 4.13.0
      * @category Util
      * @returns {Array} Returns the new empty array.
      * @example
      *
      * var arrays = _.times(2, _.stubArray);
      *
      * console.log(arrays);
      * // => [[], []]
      *
      * console.log(arrays[0] === arrays[1]);
      * // => false
      */
     function stubArray() {
       return [];
     }
 
     /**
      * This method returns `false`.
      *
      * @static
      * @memberOf _
      * @since 4.13.0
      * @category Util
      * @returns {boolean} Returns `false`.
      * @example
      *
      * _.times(2, _.stubFalse);
      * // => [false, false]
      */
     function stubFalse() {
       return false;
     }
 
     /**
      * This method returns a new empty object.
      *
      * @static
      * @memberOf _
      * @since 4.13.0
      * @category Util
      * @returns {Object} Returns the new empty object.
      * @example
      *
      * var objects = _.times(2, _.stubObject);
      *
      * console.log(objects);
      * // => [{}, {}]
      *
      * console.log(objects[0] === objects[1]);
      * // => false
      */
     function stubObject() {
       return {};
     }
 
     /**
      * This method returns an empty string.
      *
      * @static
      * @memberOf _
      * @since 4.13.0
      * @category Util
      * @returns {string} Returns the empty string.
      * @example
      *
      * _.times(2, _.stubString);
      * // => ['', '']
      */
     function stubString() {
       return '';
     }
 
     /**
      * This method returns `true`.
      *
      * @static
      * @memberOf _
      * @since 4.13.0
      * @category Util
      * @returns {boolean} Returns `true`.
      * @example
      *
      * _.times(2, _.stubTrue);
      * // => [true, true]
      */
     function stubTrue() {
       return true;
     }
 
     /**
      * Invokes the iteratee `n` times, returning an array of the results of
      * each invocation. The iteratee is invoked with one argument; (index).
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Util
      * @param {number} n The number of times to invoke `iteratee`.
      * @param {Function} [iteratee=_.identity] The function invoked per iteration.
      * @returns {Array} Returns the array of results.
      * @example
      *
      * _.times(3, String);
      * // => ['0', '1', '2']
      *
      *  _.times(4, _.constant(0));
      * // => [0, 0, 0, 0]
      */
     function times(n, iteratee) {
       n = toInteger(n);
       if (n < 1 || n > MAX_SAFE_INTEGER) {
         return [];
       }
       var index = MAX_ARRAY_LENGTH,
           length = nativeMin(n, MAX_ARRAY_LENGTH);
 
       iteratee = getIteratee(iteratee);
       n -= MAX_ARRAY_LENGTH;
 
       var result = baseTimes(length, iteratee);
       while (++index < n) {
         iteratee(index);
       }
       return result;
     }
 
     /**
      * Converts `value` to a property path array.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Util
      * @param {*} value The value to convert.
      * @returns {Array} Returns the new property path array.
      * @example
      *
      * _.toPath('a.b.c');
      * // => ['a', 'b', 'c']
      *
      * _.toPath('a[0].b.c');
      * // => ['a', '0', 'b', 'c']
      */
     function toPath(value) {
       if (isArray(value)) {
         return arrayMap(value, toKey);
       }
       return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));
     }
 
     /**
      * Generates a unique ID. If `prefix` is given, the ID is appended to it.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Util
      * @param {string} [prefix=''] The value to prefix the ID with.
      * @returns {string} Returns the unique ID.
      * @example
      *
      * _.uniqueId('contact_');
      * // => 'contact_104'
      *
      * _.uniqueId();
      * // => '105'
      */
     function uniqueId(prefix) {
       var id = ++idCounter;
       return toString(prefix) + id;
     }
 
     /*------------------------------------------------------------------------*/
 
     /**
      * Adds two numbers.
      *
      * @static
      * @memberOf _
      * @since 3.4.0
      * @category Math
      * @param {number} augend The first number in an addition.
      * @param {number} addend The second number in an addition.
      * @returns {number} Returns the total.
      * @example
      *
      * _.add(6, 4);
      * // => 10
      */
     var add = createMathOperation(function(augend, addend) {
       return augend + addend;
     }, 0);
 
     /**
      * Computes `number` rounded up to `precision`.
      *
      * @static
      * @memberOf _
      * @since 3.10.0
      * @category Math
      * @param {number} number The number to round up.
      * @param {number} [precision=0] The precision to round up to.
      * @returns {number} Returns the rounded up number.
      * @example
      *
      * _.ceil(4.006);
      * // => 5
      *
      * _.ceil(6.004, 2);
      * // => 6.01
      *
      * _.ceil(6040, -2);
      * // => 6100
      */
     var ceil = createRound('ceil');
 
     /**
      * Divide two numbers.
      *
      * @static
      * @memberOf _
      * @since 4.7.0
      * @category Math
      * @param {number} dividend The first number in a division.
      * @param {number} divisor The second number in a division.
      * @returns {number} Returns the quotient.
      * @example
      *
      * _.divide(6, 4);
      * // => 1.5
      */
     var divide = createMathOperation(function(dividend, divisor) {
       return dividend / divisor;
     }, 1);
 
     /**
      * Computes `number` rounded down to `precision`.
      *
      * @static
      * @memberOf _
      * @since 3.10.0
      * @category Math
      * @param {number} number The number to round down.
      * @param {number} [precision=0] The precision to round down to.
      * @returns {number} Returns the rounded down number.
      * @example
      *
      * _.floor(4.006);
      * // => 4
      *
      * _.floor(0.046, 2);
      * // => 0.04
      *
      * _.floor(4060, -2);
      * // => 4000
      */
     var floor = createRound('floor');
 
     /**
      * Computes the maximum value of `array`. If `array` is empty or falsey,
      * `undefined` is returned.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Math
      * @param {Array} array The array to iterate over.
      * @returns {*} Returns the maximum value.
      * @example
      *
      * _.max([4, 2, 8, 6]);
      * // => 8
      *
      * _.max([]);
      * // => undefined
      */
     function max(array) {
       return (array && array.length)
         ? baseExtremum(array, identity, baseGt)
         : undefined;
     }
 
     /**
      * This method is like `_.max` except that it accepts `iteratee` which is
      * invoked for each element in `array` to generate the criterion by which
      * the value is ranked. The iteratee is invoked with one argument: (value).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Math
      * @param {Array} array The array to iterate over.
      * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
      * @returns {*} Returns the maximum value.
      * @example
      *
      * var objects = [{ 'n': 1 }, { 'n': 2 }];
      *
      * _.maxBy(objects, function(o) { return o.n; });
      * // => { 'n': 2 }
      *
      * // The `_.property` iteratee shorthand.
      * _.maxBy(objects, 'n');
      * // => { 'n': 2 }
      */
     function maxBy(array, iteratee) {
       return (array && array.length)
         ? baseExtremum(array, getIteratee(iteratee, 2), baseGt)
         : undefined;
     }
 
     /**
      * Computes the mean of the values in `array`.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Math
      * @param {Array} array The array to iterate over.
      * @returns {number} Returns the mean.
      * @example
      *
      * _.mean([4, 2, 8, 6]);
      * // => 5
      */
     function mean(array) {
       return baseMean(array, identity);
     }
 
     /**
      * This method is like `_.mean` except that it accepts `iteratee` which is
      * invoked for each element in `array` to generate the value to be averaged.
      * The iteratee is invoked with one argument: (value).
      *
      * @static
      * @memberOf _
      * @since 4.7.0
      * @category Math
      * @param {Array} array The array to iterate over.
      * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
      * @returns {number} Returns the mean.
      * @example
      *
      * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
      *
      * _.meanBy(objects, function(o) { return o.n; });
      * // => 5
      *
      * // The `_.property` iteratee shorthand.
      * _.meanBy(objects, 'n');
      * // => 5
      */
     function meanBy(array, iteratee) {
       return baseMean(array, getIteratee(iteratee, 2));
     }
 
     /**
      * Computes the minimum value of `array`. If `array` is empty or falsey,
      * `undefined` is returned.
      *
      * @static
      * @since 0.1.0
      * @memberOf _
      * @category Math
      * @param {Array} array The array to iterate over.
      * @returns {*} Returns the minimum value.
      * @example
      *
      * _.min([4, 2, 8, 6]);
      * // => 2
      *
      * _.min([]);
      * // => undefined
      */
     function min(array) {
       return (array && array.length)
         ? baseExtremum(array, identity, baseLt)
         : undefined;
     }
 
     /**
      * This method is like `_.min` except that it accepts `iteratee` which is
      * invoked for each element in `array` to generate the criterion by which
      * the value is ranked. The iteratee is invoked with one argument: (value).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Math
      * @param {Array} array The array to iterate over.
      * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
      * @returns {*} Returns the minimum value.
      * @example
      *
      * var objects = [{ 'n': 1 }, { 'n': 2 }];
      *
      * _.minBy(objects, function(o) { return o.n; });
      * // => { 'n': 1 }
      *
      * // The `_.property` iteratee shorthand.
      * _.minBy(objects, 'n');
      * // => { 'n': 1 }
      */
     function minBy(array, iteratee) {
       return (array && array.length)
         ? baseExtremum(array, getIteratee(iteratee, 2), baseLt)
         : undefined;
     }
 
     /**
      * Multiply two numbers.
      *
      * @static
      * @memberOf _
      * @since 4.7.0
      * @category Math
      * @param {number} multiplier The first number in a multiplication.
      * @param {number} multiplicand The second number in a multiplication.
      * @returns {number} Returns the product.
      * @example
      *
      * _.multiply(6, 4);
      * // => 24
      */
     var multiply = createMathOperation(function(multiplier, multiplicand) {
       return multiplier * multiplicand;
     }, 1);
 
     /**
      * Computes `number` rounded to `precision`.
      *
      * @static
      * @memberOf _
      * @since 3.10.0
      * @category Math
      * @param {number} number The number to round.
      * @param {number} [precision=0] The precision to round to.
      * @returns {number} Returns the rounded number.
      * @example
      *
      * _.round(4.006);
      * // => 4
      *
      * _.round(4.006, 2);
      * // => 4.01
      *
      * _.round(4060, -2);
      * // => 4100
      */
     var round = createRound('round');
 
     /**
      * Subtract two numbers.
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Math
      * @param {number} minuend The first number in a subtraction.
      * @param {number} subtrahend The second number in a subtraction.
      * @returns {number} Returns the difference.
      * @example
      *
      * _.subtract(6, 4);
      * // => 2
      */
     var subtract = createMathOperation(function(minuend, subtrahend) {
       return minuend - subtrahend;
     }, 0);
 
     /**
      * Computes the sum of the values in `array`.
      *
      * @static
      * @memberOf _
      * @since 3.4.0
      * @category Math
      * @param {Array} array The array to iterate over.
      * @returns {number} Returns the sum.
      * @example
      *
      * _.sum([4, 2, 8, 6]);
      * // => 20
      */
     function sum(array) {
       return (array && array.length)
         ? baseSum(array, identity)
         : 0;
     }
 
     /**
      * This method is like `_.sum` except that it accepts `iteratee` which is
      * invoked for each element in `array` to generate the value to be summed.
      * The iteratee is invoked with one argument: (value).
      *
      * @static
      * @memberOf _
      * @since 4.0.0
      * @category Math
      * @param {Array} array The array to iterate over.
      * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
      * @returns {number} Returns the sum.
      * @example
      *
      * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
      *
      * _.sumBy(objects, function(o) { return o.n; });
      * // => 20
      *
      * // The `_.property` iteratee shorthand.
      * _.sumBy(objects, 'n');
      * // => 20
      */
     function sumBy(array, iteratee) {
       return (array && array.length)
         ? baseSum(array, getIteratee(iteratee, 2))
         : 0;
     }
 
     /*------------------------------------------------------------------------*/
 
     // Add methods that return wrapped values in chain sequences.
     lodash.after = after;
     lodash.ary = ary;
     lodash.assign = assign;
     lodash.assignIn = assignIn;
     lodash.assignInWith = assignInWith;
     lodash.assignWith = assignWith;
     lodash.at = at;
     lodash.before = before;
     lodash.bind = bind;
     lodash.bindAll = bindAll;
     lodash.bindKey = bindKey;
     lodash.castArray = castArray;
     lodash.chain = chain;
     lodash.chunk = chunk;
     lodash.compact = compact;
     lodash.concat = concat;
     lodash.cond = cond;
     lodash.conforms = conforms;
     lodash.constant = constant;
     lodash.countBy = countBy;
     lodash.create = create;
     lodash.curry = curry;
     lodash.curryRight = curryRight;
     lodash.debounce = debounce;
     lodash.defaults = defaults;
     lodash.defaultsDeep = defaultsDeep;
     lodash.defer = defer;
     lodash.delay = delay;
     lodash.difference = difference;
     lodash.differenceBy = differenceBy;
     lodash.differenceWith = differenceWith;
     lodash.drop = drop;
     lodash.dropRight = dropRight;
     lodash.dropRightWhile = dropRightWhile;
     lodash.dropWhile = dropWhile;
     lodash.fill = fill;
     lodash.filter = filter;
     lodash.flatMap = flatMap;
     lodash.flatMapDeep = flatMapDeep;
     lodash.flatMapDepth = flatMapDepth;
     lodash.flatten = flatten;
     lodash.flattenDeep = flattenDeep;
     lodash.flattenDepth = flattenDepth;
     lodash.flip = flip;
     lodash.flow = flow;
     lodash.flowRight = flowRight;
     lodash.fromPairs = fromPairs;
     lodash.functions = functions;
     lodash.functionsIn = functionsIn;
     lodash.groupBy = groupBy;
     lodash.initial = initial;
     lodash.intersection = intersection;
     lodash.intersectionBy = intersectionBy;
     lodash.intersectionWith = intersectionWith;
     lodash.invert = invert;
     lodash.invertBy = invertBy;
     lodash.invokeMap = invokeMap;
     lodash.iteratee = iteratee;
     lodash.keyBy = keyBy;
     lodash.keys = keys;
     lodash.keysIn = keysIn;
     lodash.map = map;
     lodash.mapKeys = mapKeys;
     lodash.mapValues = mapValues;
     lodash.matches = matches;
     lodash.matchesProperty = matchesProperty;
     lodash.memoize = memoize;
     lodash.merge = merge;
     lodash.mergeWith = mergeWith;
     lodash.method = method;
     lodash.methodOf = methodOf;
     lodash.mixin = mixin;
     lodash.negate = negate;
     lodash.nthArg = nthArg;
     lodash.omit = omit;
     lodash.omitBy = omitBy;
     lodash.once = once;
     lodash.orderBy = orderBy;
     lodash.over = over;
     lodash.overArgs = overArgs;
     lodash.overEvery = overEvery;
     lodash.overSome = overSome;
     lodash.partial = partial;
     lodash.partialRight = partialRight;
     lodash.partition = partition;
     lodash.pick = pick;
     lodash.pickBy = pickBy;
     lodash.property = property;
     lodash.propertyOf = propertyOf;
     lodash.pull = pull;
     lodash.pullAll = pullAll;
     lodash.pullAllBy = pullAllBy;
     lodash.pullAllWith = pullAllWith;
     lodash.pullAt = pullAt;
     lodash.range = range;
     lodash.rangeRight = rangeRight;
     lodash.rearg = rearg;
     lodash.reject = reject;
     lodash.remove = remove;
     lodash.rest = rest;
     lodash.reverse = reverse;
     lodash.sampleSize = sampleSize;
     lodash.set = set;
     lodash.setWith = setWith;
     lodash.shuffle = shuffle;
     lodash.slice = slice;
     lodash.sortBy = sortBy;
     lodash.sortedUniq = sortedUniq;
     lodash.sortedUniqBy = sortedUniqBy;
     lodash.split = split;
     lodash.spread = spread;
     lodash.tail = tail;
     lodash.take = take;
     lodash.takeRight = takeRight;
     lodash.takeRightWhile = takeRightWhile;
     lodash.takeWhile = takeWhile;
     lodash.tap = tap;
     lodash.throttle = throttle;
     lodash.thru = thru;
     lodash.toArray = toArray;
     lodash.toPairs = toPairs;
     lodash.toPairsIn = toPairsIn;
     lodash.toPath = toPath;
     lodash.toPlainObject = toPlainObject;
     lodash.transform = transform;
     lodash.unary = unary;
     lodash.union = union;
     lodash.unionBy = unionBy;
     lodash.unionWith = unionWith;
     lodash.uniq = uniq;
     lodash.uniqBy = uniqBy;
     lodash.uniqWith = uniqWith;
     lodash.unset = unset;
     lodash.unzip = unzip;
     lodash.unzipWith = unzipWith;
     lodash.update = update;
     lodash.updateWith = updateWith;
     lodash.values = values;
     lodash.valuesIn = valuesIn;
     lodash.without = without;
     lodash.words = words;
     lodash.wrap = wrap;
     lodash.xor = xor;
     lodash.xorBy = xorBy;
     lodash.xorWith = xorWith;
     lodash.zip = zip;
     lodash.zipObject = zipObject;
     lodash.zipObjectDeep = zipObjectDeep;
     lodash.zipWith = zipWith;
 
     // Add aliases.
     lodash.entries = toPairs;
     lodash.entriesIn = toPairsIn;
     lodash.extend = assignIn;
     lodash.extendWith = assignInWith;
 
     // Add methods to `lodash.prototype`.
     mixin(lodash, lodash);
 
     /*------------------------------------------------------------------------*/
 
     // Add methods that return unwrapped values in chain sequences.
     lodash.add = add;
     lodash.attempt = attempt;
     lodash.camelCase = camelCase;
     lodash.capitalize = capitalize;
     lodash.ceil = ceil;
     lodash.clamp = clamp;
     lodash.clone = clone;
     lodash.cloneDeep = cloneDeep;
     lodash.cloneDeepWith = cloneDeepWith;
     lodash.cloneWith = cloneWith;
     lodash.conformsTo = conformsTo;
     lodash.deburr = deburr;
     lodash.defaultTo = defaultTo;
     lodash.divide = divide;
     lodash.endsWith = endsWith;
     lodash.eq = eq;
     lodash.escape = escape;
     lodash.escapeRegExp = escapeRegExp;
     lodash.every = every;
     lodash.find = find;
     lodash.findIndex = findIndex;
     lodash.findKey = findKey;
     lodash.findLast = findLast;
     lodash.findLastIndex = findLastIndex;
     lodash.findLastKey = findLastKey;
     lodash.floor = floor;
     lodash.forEach = forEach;
     lodash.forEachRight = forEachRight;
     lodash.forIn = forIn;
     lodash.forInRight = forInRight;
     lodash.forOwn = forOwn;
     lodash.forOwnRight = forOwnRight;
     lodash.get = get;
     lodash.gt = gt;
     lodash.gte = gte;
     lodash.has = has;
     lodash.hasIn = hasIn;
     lodash.head = head;
     lodash.identity = identity;
     lodash.includes = includes;
     lodash.indexOf = indexOf;
     lodash.inRange = inRange;
     lodash.invoke = invoke;
     lodash.isArguments = isArguments;
     lodash.isArray = isArray;
     lodash.isArrayBuffer = isArrayBuffer;
     lodash.isArrayLike = isArrayLike;
     lodash.isArrayLikeObject = isArrayLikeObject;
     lodash.isBoolean = isBoolean;
     lodash.isBuffer = isBuffer;
     lodash.isDate = isDate;
     lodash.isElement = isElement;
     lodash.isEmpty = isEmpty;
     lodash.isEqual = isEqual;
     lodash.isEqualWith = isEqualWith;
     lodash.isError = isError;
     lodash.isFinite = isFinite;
     lodash.isFunction = isFunction;
     lodash.isInteger = isInteger;
     lodash.isLength = isLength;
     lodash.isMap = isMap;
     lodash.isMatch = isMatch;
     lodash.isMatchWith = isMatchWith;
     lodash.isNaN = isNaN;
     lodash.isNative = isNative;
     lodash.isNil = isNil;
     lodash.isNull = isNull;
     lodash.isNumber = isNumber;
     lodash.isObject = isObject;
     lodash.isObjectLike = isObjectLike;
     lodash.isPlainObject = isPlainObject;
     lodash.isRegExp = isRegExp;
     lodash.isSafeInteger = isSafeInteger;
     lodash.isSet = isSet;
     lodash.isString = isString;
     lodash.isSymbol = isSymbol;
     lodash.isTypedArray = isTypedArray;
     lodash.isUndefined = isUndefined;
     lodash.isWeakMap = isWeakMap;
     lodash.isWeakSet = isWeakSet;
     lodash.join = join;
     lodash.kebabCase = kebabCase;
     lodash.last = last;
     lodash.lastIndexOf = lastIndexOf;
     lodash.lowerCase = lowerCase;
     lodash.lowerFirst = lowerFirst;
     lodash.lt = lt;
     lodash.lte = lte;
     lodash.max = max;
     lodash.maxBy = maxBy;
     lodash.mean = mean;
     lodash.meanBy = meanBy;
     lodash.min = min;
     lodash.minBy = minBy;
     lodash.stubArray = stubArray;
     lodash.stubFalse = stubFalse;
     lodash.stubObject = stubObject;
     lodash.stubString = stubString;
     lodash.stubTrue = stubTrue;
     lodash.multiply = multiply;
     lodash.nth = nth;
     lodash.noConflict = noConflict;
     lodash.noop = noop;
     lodash.now = now;
     lodash.pad = pad;
     lodash.padEnd = padEnd;
     lodash.padStart = padStart;
     lodash.parseInt = parseInt;
     lodash.random = random;
     lodash.reduce = reduce;
     lodash.reduceRight = reduceRight;
     lodash.repeat = repeat;
     lodash.replace = replace;
     lodash.result = result;
     lodash.round = round;
     lodash.runInContext = runInContext;
     lodash.sample = sample;
     lodash.size = size;
     lodash.snakeCase = snakeCase;
     lodash.some = some;
     lodash.sortedIndex = sortedIndex;
     lodash.sortedIndexBy = sortedIndexBy;
     lodash.sortedIndexOf = sortedIndexOf;
     lodash.sortedLastIndex = sortedLastIndex;
     lodash.sortedLastIndexBy = sortedLastIndexBy;
     lodash.sortedLastIndexOf = sortedLastIndexOf;
     lodash.startCase = startCase;
     lodash.startsWith = startsWith;
     lodash.subtract = subtract;
     lodash.sum = sum;
     lodash.sumBy = sumBy;
     lodash.template = template;
     lodash.times = times;
     lodash.toFinite = toFinite;
     lodash.toInteger = toInteger;
     lodash.toLength = toLength;
     lodash.toLower = toLower;
     lodash.toNumber = toNumber;
     lodash.toSafeInteger = toSafeInteger;
     lodash.toString = toString;
     lodash.toUpper = toUpper;
     lodash.trim = trim;
     lodash.trimEnd = trimEnd;
     lodash.trimStart = trimStart;
     lodash.truncate = truncate;
     lodash.unescape = unescape;
     lodash.uniqueId = uniqueId;
     lodash.upperCase = upperCase;
     lodash.upperFirst = upperFirst;
 
     // Add aliases.
     lodash.each = forEach;
     lodash.eachRight = forEachRight;
     lodash.first = head;
 
     mixin(lodash, (function() {
       var source = {};
       baseForOwn(lodash, function(func, methodName) {
         if (!hasOwnProperty.call(lodash.prototype, methodName)) {
           source[methodName] = func;
         }
       });
       return source;
     }()), { 'chain': false });
 
     /*------------------------------------------------------------------------*/
 
     /**
      * The semantic version number.
      *
      * @static
      * @memberOf _
      * @type {string}
      */
     lodash.VERSION = VERSION;
 
     // Assign default placeholders.
     arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) {
       lodash[methodName].placeholder = lodash;
     });
 
     // Add `LazyWrapper` methods for `_.drop` and `_.take` variants.
     arrayEach(['drop', 'take'], function(methodName, index) {
       LazyWrapper.prototype[methodName] = function(n) {
         n = n === undefined ? 1 : nativeMax(toInteger(n), 0);
 
         var result = (this.__filtered__ && !index)
           ? new LazyWrapper(this)
           : this.clone();
 
         if (result.__filtered__) {
           result.__takeCount__ = nativeMin(n, result.__takeCount__);
         } else {
           result.__views__.push({
             'size': nativeMin(n, MAX_ARRAY_LENGTH),
             'type': methodName + (result.__dir__ < 0 ? 'Right' : '')
           });
         }
         return result;
       };
 
       LazyWrapper.prototype[methodName + 'Right'] = function(n) {
         return this.reverse()[methodName](n).reverse();
       };
     });
 
     // Add `LazyWrapper` methods that accept an `iteratee` value.
     arrayEach(['filter', 'map', 'takeWhile'], function(methodName, index) {
       var type = index + 1,
           isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG;
 
       LazyWrapper.prototype[methodName] = function(iteratee) {
         var result = this.clone();
         result.__iteratees__.push({
           'iteratee': getIteratee(iteratee, 3),
           'type': type
         });
         result.__filtered__ = result.__filtered__ || isFilter;
         return result;
       };
     });
 
     // Add `LazyWrapper` methods for `_.head` and `_.last`.
     arrayEach(['head', 'last'], function(methodName, index) {
       var takeName = 'take' + (index ? 'Right' : '');
 
       LazyWrapper.prototype[methodName] = function() {
         return this[takeName](1).value()[0];
       };
     });
 
     // Add `LazyWrapper` methods for `_.initial` and `_.tail`.
     arrayEach(['initial', 'tail'], function(methodName, index) {
       var dropName = 'drop' + (index ? '' : 'Right');
 
       LazyWrapper.prototype[methodName] = function() {
         return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1);
       };
     });
 
     LazyWrapper.prototype.compact = function() {
       return this.filter(identity);
     };
 
     LazyWrapper.prototype.find = function(predicate) {
       return this.filter(predicate).head();
     };
 
     LazyWrapper.prototype.findLast = function(predicate) {
       return this.reverse().find(predicate);
     };
 
     LazyWrapper.prototype.invokeMap = baseRest(function(path, args) {
       if (typeof path == 'function') {
         return new LazyWrapper(this);
       }
       return this.map(function(value) {
         return baseInvoke(value, path, args);
       });
     });
 
     LazyWrapper.prototype.reject = function(predicate) {
       return this.filter(negate(getIteratee(predicate)));
     };
 
     LazyWrapper.prototype.slice = function(start, end) {
       start = toInteger(start);
 
       var result = this;
       if (result.__filtered__ && (start > 0 || end < 0)) {
         return new LazyWrapper(result);
       }
       if (start < 0) {
         result = result.takeRight(-start);
       } else if (start) {
         result = result.drop(start);
       }
       if (end !== undefined) {
         end = toInteger(end);
         result = end < 0 ? result.dropRight(-end) : result.take(end - start);
       }
       return result;
     };
 
     LazyWrapper.prototype.takeRightWhile = function(predicate) {
       return this.reverse().takeWhile(predicate).reverse();
     };
 
     LazyWrapper.prototype.toArray = function() {
       return this.take(MAX_ARRAY_LENGTH);
     };
 
     // Add `LazyWrapper` methods to `lodash.prototype`.
     baseForOwn(LazyWrapper.prototype, function(func, methodName) {
       var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName),
           isTaker = /^(?:head|last)$/.test(methodName),
           lodashFunc = lodash[isTaker ? ('take' + (methodName == 'last' ? 'Right' : '')) : methodName],
           retUnwrapped = isTaker || /^find/.test(methodName);
 
       if (!lodashFunc) {
         return;
       }
       lodash.prototype[methodName] = function() {
         var value = this.__wrapped__,
             args = isTaker ? [1] : arguments,
             isLazy = value instanceof LazyWrapper,
             iteratee = args[0],
             useLazy = isLazy || isArray(value);
 
         var interceptor = function(value) {
           var result = lodashFunc.apply(lodash, arrayPush([value], args));
           return (isTaker && chainAll) ? result[0] : result;
         };
 
         if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) {
           // Avoid lazy use if the iteratee has a "length" value other than `1`.
           isLazy = useLazy = false;
         }
         var chainAll = this.__chain__,
             isHybrid = !!this.__actions__.length,
             isUnwrapped = retUnwrapped && !chainAll,
             onlyLazy = isLazy && !isHybrid;
 
         if (!retUnwrapped && useLazy) {
           value = onlyLazy ? value : new LazyWrapper(this);
           var result = func.apply(value, args);
           result.__actions__.push({ 'func': thru, 'args': [interceptor], 'thisArg': undefined });
           return new LodashWrapper(result, chainAll);
         }
         if (isUnwrapped && onlyLazy) {
           return func.apply(this, args);
         }
         result = this.thru(interceptor);
         return isUnwrapped ? (isTaker ? result.value()[0] : result.value()) : result;
       };
     });
 
     // Add `Array` methods to `lodash.prototype`.
     arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function(methodName) {
       var func = arrayProto[methodName],
           chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru',
           retUnwrapped = /^(?:pop|shift)$/.test(methodName);
 
       lodash.prototype[methodName] = function() {
         var args = arguments;
         if (retUnwrapped && !this.__chain__) {
           var value = this.value();
           return func.apply(isArray(value) ? value : [], args);
         }
         return this[chainName](function(value) {
           return func.apply(isArray(value) ? value : [], args);
         });
       };
     });
 
     // Map minified method names to their real names.
     baseForOwn(LazyWrapper.prototype, function(func, methodName) {
       var lodashFunc = lodash[methodName];
       if (lodashFunc) {
         var key = lodashFunc.name + '';
         if (!hasOwnProperty.call(realNames, key)) {
           realNames[key] = [];
         }
         realNames[key].push({ 'name': methodName, 'func': lodashFunc });
       }
     });
 
     realNames[createHybrid(undefined, WRAP_BIND_KEY_FLAG).name] = [{
       'name': 'wrapper',
       'func': undefined
     }];
 
     // Add methods to `LazyWrapper`.
     LazyWrapper.prototype.clone = lazyClone;
     LazyWrapper.prototype.reverse = lazyReverse;
     LazyWrapper.prototype.value = lazyValue;
 
     // Add chain sequence methods to the `lodash` wrapper.
     lodash.prototype.at = wrapperAt;
     lodash.prototype.chain = wrapperChain;
     lodash.prototype.commit = wrapperCommit;
     lodash.prototype.next = wrapperNext;
     lodash.prototype.plant = wrapperPlant;
     lodash.prototype.reverse = wrapperReverse;
     lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue;
 
     // Add lazy aliases.
     lodash.prototype.first = lodash.prototype.head;
 
     if (symIterator) {
       lodash.prototype[symIterator] = wrapperToIterator;
     }
     return lodash;
   });
 
   /*--------------------------------------------------------------------------*/
 
   // Export lodash.
   var _ = runInContext();
 
   // Some AMD build optimizers, like r.js, check for condition patterns like:
   if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
     // Expose Lodash on the global object to prevent errors when Lodash is
     // loaded by a script tag in the presence of an AMD loader.
     // See http://requirejs.org/docs/errors.html#mismatch for more details.
     // Use `_.noConflict` to remove Lodash from the global object.
     root._ = _;
 
     // Define as an anonymous module so, through path mapping, it can be
     // referenced as the "underscore" module.
     define(function() {
       return _;
     });
   }
   // Check for `exports` after `define` in case a build optimizer adds it.
   else if (freeModule) {
     // Export for Node.js.
     (freeModule.exports = _)._ = _;
     // Export for CommonJS support.
     freeExports._ = _;
   }
   else {
     // Export to the global object.
     root._ = _;
   }
 }.call(this));