1 | /**
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2 | * lodash (Custom Build) <https://lodash.com/>
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3 | * Build: `lodash modularize exports="npm" -o ./`
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4 | * Copyright jQuery Foundation and other contributors <https://jquery.org/>
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5 | * Released under MIT license <https://lodash.com/license>
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6 | * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
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7 | * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
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8 | */
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9 |
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10 | /** Used as the size to enable large array optimizations. */
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11 | var LARGE_ARRAY_SIZE = 200;
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12 |
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13 | /** Used as the `TypeError` message for "Functions" methods. */
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14 | var FUNC_ERROR_TEXT = 'Expected a function';
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15 |
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16 | /** Used to stand-in for `undefined` hash values. */
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17 | var HASH_UNDEFINED = '__lodash_hash_undefined__';
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18 |
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19 | /** Used to compose bitmasks for comparison styles. */
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20 | var UNORDERED_COMPARE_FLAG = 1,
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21 | PARTIAL_COMPARE_FLAG = 2;
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22 |
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23 | /** Used as references for various `Number` constants. */
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24 | var INFINITY = 1 / 0,
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25 | MAX_SAFE_INTEGER = 9007199254740991;
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26 |
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27 | /** `Object#toString` result references. */
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28 | var argsTag = '[object Arguments]',
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29 | arrayTag = '[object Array]',
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30 | boolTag = '[object Boolean]',
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31 | dateTag = '[object Date]',
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32 | errorTag = '[object Error]',
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33 | funcTag = '[object Function]',
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34 | genTag = '[object GeneratorFunction]',
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35 | mapTag = '[object Map]',
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36 | numberTag = '[object Number]',
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37 | objectTag = '[object Object]',
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38 | promiseTag = '[object Promise]',
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39 | regexpTag = '[object RegExp]',
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40 | setTag = '[object Set]',
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41 | stringTag = '[object String]',
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42 | symbolTag = '[object Symbol]',
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43 | weakMapTag = '[object WeakMap]';
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44 |
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45 | var arrayBufferTag = '[object ArrayBuffer]',
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46 | dataViewTag = '[object DataView]',
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47 | float32Tag = '[object Float32Array]',
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48 | float64Tag = '[object Float64Array]',
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49 | int8Tag = '[object Int8Array]',
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50 | int16Tag = '[object Int16Array]',
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51 | int32Tag = '[object Int32Array]',
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52 | uint8Tag = '[object Uint8Array]',
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53 | uint8ClampedTag = '[object Uint8ClampedArray]',
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54 | uint16Tag = '[object Uint16Array]',
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55 | uint32Tag = '[object Uint32Array]';
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56 |
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57 | /** Used to match property names within property paths. */
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58 | var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
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59 | reIsPlainProp = /^\w*$/,
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60 | reLeadingDot = /^\./,
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61 | rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;
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62 |
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63 | /**
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64 | * Used to match `RegExp`
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65 | * [syntax characters](http://ecma-international.org/ecma-262/6.0/#sec-patterns).
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66 | */
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67 | var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;
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68 |
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69 | /** Used to match backslashes in property paths. */
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70 | var reEscapeChar = /\\(\\)?/g;
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71 |
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72 | /** Used to detect host constructors (Safari). */
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73 | var reIsHostCtor = /^\[object .+?Constructor\]$/;
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74 |
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75 | /** Used to detect unsigned integer values. */
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76 | var reIsUint = /^(?:0|[1-9]\d*)$/;
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77 |
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78 | /** Used to identify `toStringTag` values of typed arrays. */
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79 | var typedArrayTags = {};
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80 | typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
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81 | typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
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82 | typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
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83 | typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
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84 | typedArrayTags[uint32Tag] = true;
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85 | typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
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86 | typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
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87 | typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =
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88 | typedArrayTags[errorTag] = typedArrayTags[funcTag] =
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89 | typedArrayTags[mapTag] = typedArrayTags[numberTag] =
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90 | typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
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91 | typedArrayTags[setTag] = typedArrayTags[stringTag] =
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92 | typedArrayTags[weakMapTag] = false;
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93 |
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94 | /** Detect free variable `global` from Node.js. */
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95 | var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;
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96 |
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97 | /** Detect free variable `self`. */
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98 | var freeSelf = typeof self == 'object' && self && self.Object === Object && self;
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99 |
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100 | /** Used as a reference to the global object. */
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101 | var root = freeGlobal || freeSelf || Function('return this')();
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102 |
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103 | /** Detect free variable `exports`. */
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104 | var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;
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105 |
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106 | /** Detect free variable `module`. */
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107 | var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;
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108 |
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109 | /** Detect the popular CommonJS extension `module.exports`. */
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110 | var moduleExports = freeModule && freeModule.exports === freeExports;
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111 |
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112 | /** Detect free variable `process` from Node.js. */
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113 | var freeProcess = moduleExports && freeGlobal.process;
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114 |
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115 | /** Used to access faster Node.js helpers. */
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116 | var nodeUtil = (function() {
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117 | try {
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118 | return freeProcess && freeProcess.binding('util');
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119 | } catch (e) {}
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120 | }());
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121 |
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122 | /* Node.js helper references. */
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123 | var nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;
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124 |
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125 | /**
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126 | * A specialized version of `_.some` for arrays without support for iteratee
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127 | * shorthands.
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128 | *
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129 | * @private
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130 | * @param {Array} [array] The array to iterate over.
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131 | * @param {Function} predicate The function invoked per iteration.
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132 | * @returns {boolean} Returns `true` if any element passes the predicate check,
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133 | * else `false`.
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134 | */
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135 | function arraySome(array, predicate) {
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136 | var index = -1,
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137 | length = array ? array.length : 0;
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138 |
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139 | while (++index < length) {
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140 | if (predicate(array[index], index, array)) {
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141 | return true;
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142 | }
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143 | }
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144 | return false;
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145 | }
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146 |
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147 | /**
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148 | * The base implementation of `_.property` without support for deep paths.
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149 | *
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150 | * @private
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151 | * @param {string} key The key of the property to get.
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152 | * @returns {Function} Returns the new accessor function.
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153 | */
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154 | function baseProperty(key) {
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155 | return function(object) {
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156 | return object == null ? undefined : object[key];
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157 | };
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158 | }
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159 |
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160 | /**
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161 | * The base implementation of `_.times` without support for iteratee shorthands
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162 | * or max array length checks.
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163 | *
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164 | * @private
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165 | * @param {number} n The number of times to invoke `iteratee`.
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166 | * @param {Function} iteratee The function invoked per iteration.
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167 | * @returns {Array} Returns the array of results.
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168 | */
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169 | function baseTimes(n, iteratee) {
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170 | var index = -1,
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171 | result = Array(n);
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172 |
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173 | while (++index < n) {
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174 | result[index] = iteratee(index);
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175 | }
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176 | return result;
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177 | }
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178 |
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179 | /**
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180 | * The base implementation of `_.unary` without support for storing metadata.
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181 | *
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182 | * @private
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183 | * @param {Function} func The function to cap arguments for.
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184 | * @returns {Function} Returns the new capped function.
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185 | */
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186 | function baseUnary(func) {
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187 | return function(value) {
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188 | return func(value);
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189 | };
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190 | }
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191 |
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192 | /**
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193 | * Gets the value at `key` of `object`.
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194 | *
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195 | * @private
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196 | * @param {Object} [object] The object to query.
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197 | * @param {string} key The key of the property to get.
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198 | * @returns {*} Returns the property value.
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199 | */
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200 | function getValue(object, key) {
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201 | return object == null ? undefined : object[key];
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202 | }
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203 |
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204 | /**
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205 | * Checks if `value` is a host object in IE < 9.
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206 | *
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207 | * @private
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208 | * @param {*} value The value to check.
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209 | * @returns {boolean} Returns `true` if `value` is a host object, else `false`.
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210 | */
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211 | function isHostObject(value) {
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212 | // Many host objects are `Object` objects that can coerce to strings
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213 | // despite having improperly defined `toString` methods.
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214 | var result = false;
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215 | if (value != null && typeof value.toString != 'function') {
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216 | try {
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217 | result = !!(value + '');
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218 | } catch (e) {}
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219 | }
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220 | return result;
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221 | }
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222 |
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223 | /**
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224 | * Converts `map` to its key-value pairs.
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225 | *
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226 | * @private
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227 | * @param {Object} map The map to convert.
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228 | * @returns {Array} Returns the key-value pairs.
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229 | */
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230 | function mapToArray(map) {
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231 | var index = -1,
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232 | result = Array(map.size);
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233 |
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234 | map.forEach(function(value, key) {
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235 | result[++index] = [key, value];
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236 | });
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237 | return result;
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238 | }
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239 |
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240 | /**
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241 | * Creates a function that invokes `func` with its first argument transformed.
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242 | *
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243 | * @private
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244 | * @param {Function} func The function to wrap.
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245 | * @param {Function} transform The argument transform.
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246 | * @returns {Function} Returns the new function.
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247 | */
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248 | function overArg(func, transform) {
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249 | return function(arg) {
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250 | return func(transform(arg));
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251 | };
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252 | }
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253 |
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254 | /**
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255 | * Converts `set` to an array of its values.
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256 | *
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257 | * @private
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258 | * @param {Object} set The set to convert.
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259 | * @returns {Array} Returns the values.
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260 | */
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261 | function setToArray(set) {
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262 | var index = -1,
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263 | result = Array(set.size);
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264 |
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265 | set.forEach(function(value) {
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266 | result[++index] = value;
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267 | });
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268 | return result;
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269 | }
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270 |
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271 | /** Used for built-in method references. */
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272 | var arrayProto = Array.prototype,
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273 | objectProto = Object.prototype;
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274 |
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275 | /** Used to detect overreaching core-js shims. */
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276 | var coreJsData = root['__core-js_shared__'];
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277 |
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278 | /** Used to detect methods masquerading as native. */
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279 | var maskSrcKey = (function() {
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280 | var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
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281 | return uid ? ('Symbol(src)_1.' + uid) : '';
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282 | }());
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283 |
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284 | /** Used to resolve the decompiled source of functions. */
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285 | var funcToString = Function.prototype.toString;
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286 |
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287 | /** Used to check objects for own properties. */
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288 | var hasOwnProperty = objectProto.hasOwnProperty;
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289 |
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290 | /**
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291 | * Used to resolve the
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292 | * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
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293 | * of values.
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294 | */
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295 | var objectToString = objectProto.toString;
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296 |
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297 | /** Used to detect if a method is native. */
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298 | var reIsNative = RegExp('^' +
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299 | funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
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300 | .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
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301 | );
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302 |
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303 | /** Built-in value references. */
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304 | var Symbol = root.Symbol,
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305 | Uint8Array = root.Uint8Array,
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306 | propertyIsEnumerable = objectProto.propertyIsEnumerable,
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307 | splice = arrayProto.splice;
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308 |
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309 | /* Built-in method references for those with the same name as other `lodash` methods. */
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310 | var nativeGetPrototype = Object.getPrototypeOf,
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311 | nativeKeys = Object.keys;
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312 |
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313 | /* Built-in method references that are verified to be native. */
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314 | var DataView = getNative(root, 'DataView'),
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315 | Map = getNative(root, 'Map'),
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316 | Promise = getNative(root, 'Promise'),
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317 | Set = getNative(root, 'Set'),
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318 | WeakMap = getNative(root, 'WeakMap'),
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319 | nativeCreate = getNative(Object, 'create');
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320 |
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321 | /** Used to detect maps, sets, and weakmaps. */
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322 | var dataViewCtorString = toSource(DataView),
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323 | mapCtorString = toSource(Map),
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324 | promiseCtorString = toSource(Promise),
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325 | setCtorString = toSource(Set),
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326 | weakMapCtorString = toSource(WeakMap);
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327 |
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328 | /** Used to convert symbols to primitives and strings. */
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329 | var symbolProto = Symbol ? Symbol.prototype : undefined,
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330 | symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,
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331 | symbolToString = symbolProto ? symbolProto.toString : undefined;
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332 |
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333 | /**
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334 | * Creates a hash object.
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335 | *
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336 | * @private
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337 | * @constructor
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338 | * @param {Array} [entries] The key-value pairs to cache.
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339 | */
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340 | function Hash(entries) {
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341 | var index = -1,
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342 | length = entries ? entries.length : 0;
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343 |
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344 | this.clear();
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345 | while (++index < length) {
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346 | var entry = entries[index];
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347 | this.set(entry[0], entry[1]);
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348 | }
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349 | }
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350 |
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351 | /**
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352 | * Removes all key-value entries from the hash.
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353 | *
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354 | * @private
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355 | * @name clear
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356 | * @memberOf Hash
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357 | */
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358 | function hashClear() {
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359 | this.__data__ = nativeCreate ? nativeCreate(null) : {};
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360 | }
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361 |
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362 | /**
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363 | * Removes `key` and its value from the hash.
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364 | *
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365 | * @private
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366 | * @name delete
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367 | * @memberOf Hash
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368 | * @param {Object} hash The hash to modify.
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369 | * @param {string} key The key of the value to remove.
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370 | * @returns {boolean} Returns `true` if the entry was removed, else `false`.
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371 | */
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372 | function hashDelete(key) {
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373 | return this.has(key) && delete this.__data__[key];
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374 | }
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375 |
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376 | /**
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377 | * Gets the hash value for `key`.
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378 | *
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379 | * @private
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380 | * @name get
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381 | * @memberOf Hash
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382 | * @param {string} key The key of the value to get.
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383 | * @returns {*} Returns the entry value.
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384 | */
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385 | function hashGet(key) {
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386 | var data = this.__data__;
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387 | if (nativeCreate) {
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388 | var result = data[key];
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389 | return result === HASH_UNDEFINED ? undefined : result;
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390 | }
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391 | return hasOwnProperty.call(data, key) ? data[key] : undefined;
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392 | }
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393 |
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394 | /**
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395 | * Checks if a hash value for `key` exists.
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396 | *
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397 | * @private
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398 | * @name has
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399 | * @memberOf Hash
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400 | * @param {string} key The key of the entry to check.
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401 | * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
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402 | */
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403 | function hashHas(key) {
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404 | var data = this.__data__;
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405 | return nativeCreate ? data[key] !== undefined : hasOwnProperty.call(data, key);
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406 | }
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407 |
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408 | /**
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409 | * Sets the hash `key` to `value`.
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410 | *
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411 | * @private
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412 | * @name set
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413 | * @memberOf Hash
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414 | * @param {string} key The key of the value to set.
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415 | * @param {*} value The value to set.
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416 | * @returns {Object} Returns the hash instance.
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417 | */
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418 | function hashSet(key, value) {
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419 | var data = this.__data__;
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420 | data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
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421 | return this;
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422 | }
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423 |
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424 | // Add methods to `Hash`.
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425 | Hash.prototype.clear = hashClear;
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426 | Hash.prototype['delete'] = hashDelete;
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427 | Hash.prototype.get = hashGet;
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428 | Hash.prototype.has = hashHas;
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429 | Hash.prototype.set = hashSet;
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430 |
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431 | /**
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432 | * Creates an list cache object.
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433 | *
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434 | * @private
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435 | * @constructor
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436 | * @param {Array} [entries] The key-value pairs to cache.
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437 | */
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438 | function ListCache(entries) {
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439 | var index = -1,
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440 | length = entries ? entries.length : 0;
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441 |
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442 | this.clear();
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443 | while (++index < length) {
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444 | var entry = entries[index];
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445 | this.set(entry[0], entry[1]);
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446 | }
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447 | }
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448 |
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449 | /**
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450 | * Removes all key-value entries from the list cache.
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451 | *
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452 | * @private
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453 | * @name clear
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454 | * @memberOf ListCache
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455 | */
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456 | function listCacheClear() {
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457 | this.__data__ = [];
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458 | }
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459 |
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460 | /**
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461 | * Removes `key` and its value from the list cache.
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462 | *
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463 | * @private
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464 | * @name delete
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465 | * @memberOf ListCache
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466 | * @param {string} key The key of the value to remove.
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467 | * @returns {boolean} Returns `true` if the entry was removed, else `false`.
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468 | */
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469 | function listCacheDelete(key) {
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470 | var data = this.__data__,
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471 | index = assocIndexOf(data, key);
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472 |
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473 | if (index < 0) {
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474 | return false;
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475 | }
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476 | var lastIndex = data.length - 1;
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477 | if (index == lastIndex) {
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478 | data.pop();
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479 | } else {
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480 | splice.call(data, index, 1);
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481 | }
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482 | return true;
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483 | }
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484 |
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485 | /**
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486 | * Gets the list cache value for `key`.
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487 | *
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488 | * @private
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489 | * @name get
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490 | * @memberOf ListCache
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491 | * @param {string} key The key of the value to get.
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492 | * @returns {*} Returns the entry value.
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493 | */
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494 | function listCacheGet(key) {
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495 | var data = this.__data__,
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496 | index = assocIndexOf(data, key);
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497 |
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498 | return index < 0 ? undefined : data[index][1];
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499 | }
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500 |
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501 | /**
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502 | * Checks if a list cache value for `key` exists.
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503 | *
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504 | * @private
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505 | * @name has
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506 | * @memberOf ListCache
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507 | * @param {string} key The key of the entry to check.
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508 | * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
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509 | */
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510 | function listCacheHas(key) {
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511 | return assocIndexOf(this.__data__, key) > -1;
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512 | }
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513 |
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514 | /**
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515 | * Sets the list cache `key` to `value`.
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516 | *
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517 | * @private
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518 | * @name set
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519 | * @memberOf ListCache
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520 | * @param {string} key The key of the value to set.
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521 | * @param {*} value The value to set.
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522 | * @returns {Object} Returns the list cache instance.
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523 | */
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524 | function listCacheSet(key, value) {
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525 | var data = this.__data__,
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526 | index = assocIndexOf(data, key);
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527 |
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528 | if (index < 0) {
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529 | data.push([key, value]);
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530 | } else {
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531 | data[index][1] = value;
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532 | }
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533 | return this;
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534 | }
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535 |
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536 | // Add methods to `ListCache`.
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537 | ListCache.prototype.clear = listCacheClear;
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538 | ListCache.prototype['delete'] = listCacheDelete;
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539 | ListCache.prototype.get = listCacheGet;
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540 | ListCache.prototype.has = listCacheHas;
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541 | ListCache.prototype.set = listCacheSet;
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542 |
|
543 | /**
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544 | * Creates a map cache object to store key-value pairs.
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545 | *
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546 | * @private
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547 | * @constructor
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548 | * @param {Array} [entries] The key-value pairs to cache.
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549 | */
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550 | function MapCache(entries) {
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551 | var index = -1,
|
552 | length = entries ? entries.length : 0;
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553 |
|
554 | this.clear();
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555 | while (++index < length) {
|
556 | var entry = entries[index];
|
557 | this.set(entry[0], entry[1]);
|
558 | }
|
559 | }
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560 |
|
561 | /**
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562 | * Removes all key-value entries from the map.
|
563 | *
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564 | * @private
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565 | * @name clear
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566 | * @memberOf MapCache
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567 | */
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568 | function mapCacheClear() {
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569 | this.__data__ = {
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570 | 'hash': new Hash,
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571 | 'map': new (Map || ListCache),
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572 | 'string': new Hash
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573 | };
|
574 | }
|
575 |
|
576 | /**
|
577 | * Removes `key` and its value from the map.
|
578 | *
|
579 | * @private
|
580 | * @name delete
|
581 | * @memberOf MapCache
|
582 | * @param {string} key The key of the value to remove.
|
583 | * @returns {boolean} Returns `true` if the entry was removed, else `false`.
|
584 | */
|
585 | function mapCacheDelete(key) {
|
586 | return getMapData(this, key)['delete'](key);
|
587 | }
|
588 |
|
589 | /**
|
590 | * Gets the map value for `key`.
|
591 | *
|
592 | * @private
|
593 | * @name get
|
594 | * @memberOf MapCache
|
595 | * @param {string} key The key of the value to get.
|
596 | * @returns {*} Returns the entry value.
|
597 | */
|
598 | function mapCacheGet(key) {
|
599 | return getMapData(this, key).get(key);
|
600 | }
|
601 |
|
602 | /**
|
603 | * Checks if a map value for `key` exists.
|
604 | *
|
605 | * @private
|
606 | * @name has
|
607 | * @memberOf MapCache
|
608 | * @param {string} key The key of the entry to check.
|
609 | * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
|
610 | */
|
611 | function mapCacheHas(key) {
|
612 | return getMapData(this, key).has(key);
|
613 | }
|
614 |
|
615 | /**
|
616 | * Sets the map `key` to `value`.
|
617 | *
|
618 | * @private
|
619 | * @name set
|
620 | * @memberOf MapCache
|
621 | * @param {string} key The key of the value to set.
|
622 | * @param {*} value The value to set.
|
623 | * @returns {Object} Returns the map cache instance.
|
624 | */
|
625 | function mapCacheSet(key, value) {
|
626 | getMapData(this, key).set(key, value);
|
627 | return this;
|
628 | }
|
629 |
|
630 | // Add methods to `MapCache`.
|
631 | MapCache.prototype.clear = mapCacheClear;
|
632 | MapCache.prototype['delete'] = mapCacheDelete;
|
633 | MapCache.prototype.get = mapCacheGet;
|
634 | MapCache.prototype.has = mapCacheHas;
|
635 | MapCache.prototype.set = mapCacheSet;
|
636 |
|
637 | /**
|
638 | *
|
639 | * Creates an array cache object to store unique values.
|
640 | *
|
641 | * @private
|
642 | * @constructor
|
643 | * @param {Array} [values] The values to cache.
|
644 | */
|
645 | function SetCache(values) {
|
646 | var index = -1,
|
647 | length = values ? values.length : 0;
|
648 |
|
649 | this.__data__ = new MapCache;
|
650 | while (++index < length) {
|
651 | this.add(values[index]);
|
652 | }
|
653 | }
|
654 |
|
655 | /**
|
656 | * Adds `value` to the array cache.
|
657 | *
|
658 | * @private
|
659 | * @name add
|
660 | * @memberOf SetCache
|
661 | * @alias push
|
662 | * @param {*} value The value to cache.
|
663 | * @returns {Object} Returns the cache instance.
|
664 | */
|
665 | function setCacheAdd(value) {
|
666 | this.__data__.set(value, HASH_UNDEFINED);
|
667 | return this;
|
668 | }
|
669 |
|
670 | /**
|
671 | * Checks if `value` is in the array cache.
|
672 | *
|
673 | * @private
|
674 | * @name has
|
675 | * @memberOf SetCache
|
676 | * @param {*} value The value to search for.
|
677 | * @returns {number} Returns `true` if `value` is found, else `false`.
|
678 | */
|
679 | function setCacheHas(value) {
|
680 | return this.__data__.has(value);
|
681 | }
|
682 |
|
683 | // Add methods to `SetCache`.
|
684 | SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
|
685 | SetCache.prototype.has = setCacheHas;
|
686 |
|
687 | /**
|
688 | * Creates a stack cache object to store key-value pairs.
|
689 | *
|
690 | * @private
|
691 | * @constructor
|
692 | * @param {Array} [entries] The key-value pairs to cache.
|
693 | */
|
694 | function Stack(entries) {
|
695 | this.__data__ = new ListCache(entries);
|
696 | }
|
697 |
|
698 | /**
|
699 | * Removes all key-value entries from the stack.
|
700 | *
|
701 | * @private
|
702 | * @name clear
|
703 | * @memberOf Stack
|
704 | */
|
705 | function stackClear() {
|
706 | this.__data__ = new ListCache;
|
707 | }
|
708 |
|
709 | /**
|
710 | * Removes `key` and its value from the stack.
|
711 | *
|
712 | * @private
|
713 | * @name delete
|
714 | * @memberOf Stack
|
715 | * @param {string} key The key of the value to remove.
|
716 | * @returns {boolean} Returns `true` if the entry was removed, else `false`.
|
717 | */
|
718 | function stackDelete(key) {
|
719 | return this.__data__['delete'](key);
|
720 | }
|
721 |
|
722 | /**
|
723 | * Gets the stack value for `key`.
|
724 | *
|
725 | * @private
|
726 | * @name get
|
727 | * @memberOf Stack
|
728 | * @param {string} key The key of the value to get.
|
729 | * @returns {*} Returns the entry value.
|
730 | */
|
731 | function stackGet(key) {
|
732 | return this.__data__.get(key);
|
733 | }
|
734 |
|
735 | /**
|
736 | * Checks if a stack value for `key` exists.
|
737 | *
|
738 | * @private
|
739 | * @name has
|
740 | * @memberOf Stack
|
741 | * @param {string} key The key of the entry to check.
|
742 | * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
|
743 | */
|
744 | function stackHas(key) {
|
745 | return this.__data__.has(key);
|
746 | }
|
747 |
|
748 | /**
|
749 | * Sets the stack `key` to `value`.
|
750 | *
|
751 | * @private
|
752 | * @name set
|
753 | * @memberOf Stack
|
754 | * @param {string} key The key of the value to set.
|
755 | * @param {*} value The value to set.
|
756 | * @returns {Object} Returns the stack cache instance.
|
757 | */
|
758 | function stackSet(key, value) {
|
759 | var cache = this.__data__;
|
760 | if (cache instanceof ListCache) {
|
761 | var pairs = cache.__data__;
|
762 | if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
|
763 | pairs.push([key, value]);
|
764 | return this;
|
765 | }
|
766 | cache = this.__data__ = new MapCache(pairs);
|
767 | }
|
768 | cache.set(key, value);
|
769 | return this;
|
770 | }
|
771 |
|
772 | // Add methods to `Stack`.
|
773 | Stack.prototype.clear = stackClear;
|
774 | Stack.prototype['delete'] = stackDelete;
|
775 | Stack.prototype.get = stackGet;
|
776 | Stack.prototype.has = stackHas;
|
777 | Stack.prototype.set = stackSet;
|
778 |
|
779 | /**
|
780 | * Gets the index at which the `key` is found in `array` of key-value pairs.
|
781 | *
|
782 | * @private
|
783 | * @param {Array} array The array to search.
|
784 | * @param {*} key The key to search for.
|
785 | * @returns {number} Returns the index of the matched value, else `-1`.
|
786 | */
|
787 | function assocIndexOf(array, key) {
|
788 | var length = array.length;
|
789 | while (length--) {
|
790 | if (eq(array[length][0], key)) {
|
791 | return length;
|
792 | }
|
793 | }
|
794 | return -1;
|
795 | }
|
796 |
|
797 | /**
|
798 | * The base implementation of methods like `_.max` and `_.min` which accepts a
|
799 | * `comparator` to determine the extremum value.
|
800 | *
|
801 | * @private
|
802 | * @param {Array} array The array to iterate over.
|
803 | * @param {Function} iteratee The iteratee invoked per iteration.
|
804 | * @param {Function} comparator The comparator used to compare values.
|
805 | * @returns {*} Returns the extremum value.
|
806 | */
|
807 | function baseExtremum(array, iteratee, comparator) {
|
808 | var index = -1,
|
809 | length = array.length;
|
810 |
|
811 | while (++index < length) {
|
812 | var value = array[index],
|
813 | current = iteratee(value);
|
814 |
|
815 | if (current != null && (computed === undefined
|
816 | ? (current === current && !isSymbol(current))
|
817 | : comparator(current, computed)
|
818 | )) {
|
819 | var computed = current,
|
820 | result = value;
|
821 | }
|
822 | }
|
823 | return result;
|
824 | }
|
825 |
|
826 | /**
|
827 | * The base implementation of `_.get` without support for default values.
|
828 | *
|
829 | * @private
|
830 | * @param {Object} object The object to query.
|
831 | * @param {Array|string} path The path of the property to get.
|
832 | * @returns {*} Returns the resolved value.
|
833 | */
|
834 | function baseGet(object, path) {
|
835 | path = isKey(path, object) ? [path] : castPath(path);
|
836 |
|
837 | var index = 0,
|
838 | length = path.length;
|
839 |
|
840 | while (object != null && index < length) {
|
841 | object = object[toKey(path[index++])];
|
842 | }
|
843 | return (index && index == length) ? object : undefined;
|
844 | }
|
845 |
|
846 | /**
|
847 | * The base implementation of `getTag`.
|
848 | *
|
849 | * @private
|
850 | * @param {*} value The value to query.
|
851 | * @returns {string} Returns the `toStringTag`.
|
852 | */
|
853 | function baseGetTag(value) {
|
854 | return objectToString.call(value);
|
855 | }
|
856 |
|
857 | /**
|
858 | * The base implementation of `_.has` without support for deep paths.
|
859 | *
|
860 | * @private
|
861 | * @param {Object} [object] The object to query.
|
862 | * @param {Array|string} key The key to check.
|
863 | * @returns {boolean} Returns `true` if `key` exists, else `false`.
|
864 | */
|
865 | function baseHas(object, key) {
|
866 | // Avoid a bug in IE 10-11 where objects with a [[Prototype]] of `null`,
|
867 | // that are composed entirely of index properties, return `false` for
|
868 | // `hasOwnProperty` checks of them.
|
869 | return object != null &&
|
870 | (hasOwnProperty.call(object, key) ||
|
871 | (typeof object == 'object' && key in object && getPrototype(object) === null));
|
872 | }
|
873 |
|
874 | /**
|
875 | * The base implementation of `_.hasIn` without support for deep paths.
|
876 | *
|
877 | * @private
|
878 | * @param {Object} [object] The object to query.
|
879 | * @param {Array|string} key The key to check.
|
880 | * @returns {boolean} Returns `true` if `key` exists, else `false`.
|
881 | */
|
882 | function baseHasIn(object, key) {
|
883 | return object != null && key in Object(object);
|
884 | }
|
885 |
|
886 | /**
|
887 | * The base implementation of `_.isEqual` which supports partial comparisons
|
888 | * and tracks traversed objects.
|
889 | *
|
890 | * @private
|
891 | * @param {*} value The value to compare.
|
892 | * @param {*} other The other value to compare.
|
893 | * @param {Function} [customizer] The function to customize comparisons.
|
894 | * @param {boolean} [bitmask] The bitmask of comparison flags.
|
895 | * The bitmask may be composed of the following flags:
|
896 | * 1 - Unordered comparison
|
897 | * 2 - Partial comparison
|
898 | * @param {Object} [stack] Tracks traversed `value` and `other` objects.
|
899 | * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
|
900 | */
|
901 | function baseIsEqual(value, other, customizer, bitmask, stack) {
|
902 | if (value === other) {
|
903 | return true;
|
904 | }
|
905 | if (value == null || other == null || (!isObject(value) && !isObjectLike(other))) {
|
906 | return value !== value && other !== other;
|
907 | }
|
908 | return baseIsEqualDeep(value, other, baseIsEqual, customizer, bitmask, stack);
|
909 | }
|
910 |
|
911 | /**
|
912 | * A specialized version of `baseIsEqual` for arrays and objects which performs
|
913 | * deep comparisons and tracks traversed objects enabling objects with circular
|
914 | * references to be compared.
|
915 | *
|
916 | * @private
|
917 | * @param {Object} object The object to compare.
|
918 | * @param {Object} other The other object to compare.
|
919 | * @param {Function} equalFunc The function to determine equivalents of values.
|
920 | * @param {Function} [customizer] The function to customize comparisons.
|
921 | * @param {number} [bitmask] The bitmask of comparison flags. See `baseIsEqual`
|
922 | * for more details.
|
923 | * @param {Object} [stack] Tracks traversed `object` and `other` objects.
|
924 | * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
|
925 | */
|
926 | function baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) {
|
927 | var objIsArr = isArray(object),
|
928 | othIsArr = isArray(other),
|
929 | objTag = arrayTag,
|
930 | othTag = arrayTag;
|
931 |
|
932 | if (!objIsArr) {
|
933 | objTag = getTag(object);
|
934 | objTag = objTag == argsTag ? objectTag : objTag;
|
935 | }
|
936 | if (!othIsArr) {
|
937 | othTag = getTag(other);
|
938 | othTag = othTag == argsTag ? objectTag : othTag;
|
939 | }
|
940 | var objIsObj = objTag == objectTag && !isHostObject(object),
|
941 | othIsObj = othTag == objectTag && !isHostObject(other),
|
942 | isSameTag = objTag == othTag;
|
943 |
|
944 | if (isSameTag && !objIsObj) {
|
945 | stack || (stack = new Stack);
|
946 | return (objIsArr || isTypedArray(object))
|
947 | ? equalArrays(object, other, equalFunc, customizer, bitmask, stack)
|
948 | : equalByTag(object, other, objTag, equalFunc, customizer, bitmask, stack);
|
949 | }
|
950 | if (!(bitmask & PARTIAL_COMPARE_FLAG)) {
|
951 | var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
|
952 | othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');
|
953 |
|
954 | if (objIsWrapped || othIsWrapped) {
|
955 | var objUnwrapped = objIsWrapped ? object.value() : object,
|
956 | othUnwrapped = othIsWrapped ? other.value() : other;
|
957 |
|
958 | stack || (stack = new Stack);
|
959 | return equalFunc(objUnwrapped, othUnwrapped, customizer, bitmask, stack);
|
960 | }
|
961 | }
|
962 | if (!isSameTag) {
|
963 | return false;
|
964 | }
|
965 | stack || (stack = new Stack);
|
966 | return equalObjects(object, other, equalFunc, customizer, bitmask, stack);
|
967 | }
|
968 |
|
969 | /**
|
970 | * The base implementation of `_.isMatch` without support for iteratee shorthands.
|
971 | *
|
972 | * @private
|
973 | * @param {Object} object The object to inspect.
|
974 | * @param {Object} source The object of property values to match.
|
975 | * @param {Array} matchData The property names, values, and compare flags to match.
|
976 | * @param {Function} [customizer] The function to customize comparisons.
|
977 | * @returns {boolean} Returns `true` if `object` is a match, else `false`.
|
978 | */
|
979 | function baseIsMatch(object, source, matchData, customizer) {
|
980 | var index = matchData.length,
|
981 | length = index,
|
982 | noCustomizer = !customizer;
|
983 |
|
984 | if (object == null) {
|
985 | return !length;
|
986 | }
|
987 | object = Object(object);
|
988 | while (index--) {
|
989 | var data = matchData[index];
|
990 | if ((noCustomizer && data[2])
|
991 | ? data[1] !== object[data[0]]
|
992 | : !(data[0] in object)
|
993 | ) {
|
994 | return false;
|
995 | }
|
996 | }
|
997 | while (++index < length) {
|
998 | data = matchData[index];
|
999 | var key = data[0],
|
1000 | objValue = object[key],
|
1001 | srcValue = data[1];
|
1002 |
|
1003 | if (noCustomizer && data[2]) {
|
1004 | if (objValue === undefined && !(key in object)) {
|
1005 | return false;
|
1006 | }
|
1007 | } else {
|
1008 | var stack = new Stack;
|
1009 | if (customizer) {
|
1010 | var result = customizer(objValue, srcValue, key, object, source, stack);
|
1011 | }
|
1012 | if (!(result === undefined
|
1013 | ? baseIsEqual(srcValue, objValue, customizer, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG, stack)
|
1014 | : result
|
1015 | )) {
|
1016 | return false;
|
1017 | }
|
1018 | }
|
1019 | }
|
1020 | return true;
|
1021 | }
|
1022 |
|
1023 | /**
|
1024 | * The base implementation of `_.isNative` without bad shim checks.
|
1025 | *
|
1026 | * @private
|
1027 | * @param {*} value The value to check.
|
1028 | * @returns {boolean} Returns `true` if `value` is a native function,
|
1029 | * else `false`.
|
1030 | */
|
1031 | function baseIsNative(value) {
|
1032 | if (!isObject(value) || isMasked(value)) {
|
1033 | return false;
|
1034 | }
|
1035 | var pattern = (isFunction(value) || isHostObject(value)) ? reIsNative : reIsHostCtor;
|
1036 | return pattern.test(toSource(value));
|
1037 | }
|
1038 |
|
1039 | /**
|
1040 | * The base implementation of `_.isTypedArray` without Node.js optimizations.
|
1041 | *
|
1042 | * @private
|
1043 | * @param {*} value The value to check.
|
1044 | * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
|
1045 | */
|
1046 | function baseIsTypedArray(value) {
|
1047 | return isObjectLike(value) &&
|
1048 | isLength(value.length) && !!typedArrayTags[objectToString.call(value)];
|
1049 | }
|
1050 |
|
1051 | /**
|
1052 | * The base implementation of `_.iteratee`.
|
1053 | *
|
1054 | * @private
|
1055 | * @param {*} [value=_.identity] The value to convert to an iteratee.
|
1056 | * @returns {Function} Returns the iteratee.
|
1057 | */
|
1058 | function baseIteratee(value) {
|
1059 | // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.
|
1060 | // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.
|
1061 | if (typeof value == 'function') {
|
1062 | return value;
|
1063 | }
|
1064 | if (value == null) {
|
1065 | return identity;
|
1066 | }
|
1067 | if (typeof value == 'object') {
|
1068 | return isArray(value)
|
1069 | ? baseMatchesProperty(value[0], value[1])
|
1070 | : baseMatches(value);
|
1071 | }
|
1072 | return property(value);
|
1073 | }
|
1074 |
|
1075 | /**
|
1076 | * The base implementation of `_.keys` which doesn't skip the constructor
|
1077 | * property of prototypes or treat sparse arrays as dense.
|
1078 | *
|
1079 | * @private
|
1080 | * @param {Object} object The object to query.
|
1081 | * @returns {Array} Returns the array of property names.
|
1082 | */
|
1083 | var baseKeys = overArg(nativeKeys, Object);
|
1084 |
|
1085 | /**
|
1086 | * The base implementation of `_.lt` which doesn't coerce arguments.
|
1087 | *
|
1088 | * @private
|
1089 | * @param {*} value The value to compare.
|
1090 | * @param {*} other The other value to compare.
|
1091 | * @returns {boolean} Returns `true` if `value` is less than `other`,
|
1092 | * else `false`.
|
1093 | */
|
1094 | function baseLt(value, other) {
|
1095 | return value < other;
|
1096 | }
|
1097 |
|
1098 | /**
|
1099 | * The base implementation of `_.matches` which doesn't clone `source`.
|
1100 | *
|
1101 | * @private
|
1102 | * @param {Object} source The object of property values to match.
|
1103 | * @returns {Function} Returns the new spec function.
|
1104 | */
|
1105 | function baseMatches(source) {
|
1106 | var matchData = getMatchData(source);
|
1107 | if (matchData.length == 1 && matchData[0][2]) {
|
1108 | return matchesStrictComparable(matchData[0][0], matchData[0][1]);
|
1109 | }
|
1110 | return function(object) {
|
1111 | return object === source || baseIsMatch(object, source, matchData);
|
1112 | };
|
1113 | }
|
1114 |
|
1115 | /**
|
1116 | * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.
|
1117 | *
|
1118 | * @private
|
1119 | * @param {string} path The path of the property to get.
|
1120 | * @param {*} srcValue The value to match.
|
1121 | * @returns {Function} Returns the new spec function.
|
1122 | */
|
1123 | function baseMatchesProperty(path, srcValue) {
|
1124 | if (isKey(path) && isStrictComparable(srcValue)) {
|
1125 | return matchesStrictComparable(toKey(path), srcValue);
|
1126 | }
|
1127 | return function(object) {
|
1128 | var objValue = get(object, path);
|
1129 | return (objValue === undefined && objValue === srcValue)
|
1130 | ? hasIn(object, path)
|
1131 | : baseIsEqual(srcValue, objValue, undefined, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG);
|
1132 | };
|
1133 | }
|
1134 |
|
1135 | /**
|
1136 | * A specialized version of `baseProperty` which supports deep paths.
|
1137 | *
|
1138 | * @private
|
1139 | * @param {Array|string} path The path of the property to get.
|
1140 | * @returns {Function} Returns the new accessor function.
|
1141 | */
|
1142 | function basePropertyDeep(path) {
|
1143 | return function(object) {
|
1144 | return baseGet(object, path);
|
1145 | };
|
1146 | }
|
1147 |
|
1148 | /**
|
1149 | * The base implementation of `_.toString` which doesn't convert nullish
|
1150 | * values to empty strings.
|
1151 | *
|
1152 | * @private
|
1153 | * @param {*} value The value to process.
|
1154 | * @returns {string} Returns the string.
|
1155 | */
|
1156 | function baseToString(value) {
|
1157 | // Exit early for strings to avoid a performance hit in some environments.
|
1158 | if (typeof value == 'string') {
|
1159 | return value;
|
1160 | }
|
1161 | if (isSymbol(value)) {
|
1162 | return symbolToString ? symbolToString.call(value) : '';
|
1163 | }
|
1164 | var result = (value + '');
|
1165 | return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
|
1166 | }
|
1167 |
|
1168 | /**
|
1169 | * Casts `value` to a path array if it's not one.
|
1170 | *
|
1171 | * @private
|
1172 | * @param {*} value The value to inspect.
|
1173 | * @returns {Array} Returns the cast property path array.
|
1174 | */
|
1175 | function castPath(value) {
|
1176 | return isArray(value) ? value : stringToPath(value);
|
1177 | }
|
1178 |
|
1179 | /**
|
1180 | * A specialized version of `baseIsEqualDeep` for arrays with support for
|
1181 | * partial deep comparisons.
|
1182 | *
|
1183 | * @private
|
1184 | * @param {Array} array The array to compare.
|
1185 | * @param {Array} other The other array to compare.
|
1186 | * @param {Function} equalFunc The function to determine equivalents of values.
|
1187 | * @param {Function} customizer The function to customize comparisons.
|
1188 | * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`
|
1189 | * for more details.
|
1190 | * @param {Object} stack Tracks traversed `array` and `other` objects.
|
1191 | * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
|
1192 | */
|
1193 | function equalArrays(array, other, equalFunc, customizer, bitmask, stack) {
|
1194 | var isPartial = bitmask & PARTIAL_COMPARE_FLAG,
|
1195 | arrLength = array.length,
|
1196 | othLength = other.length;
|
1197 |
|
1198 | if (arrLength != othLength && !(isPartial && othLength > arrLength)) {
|
1199 | return false;
|
1200 | }
|
1201 | // Assume cyclic values are equal.
|
1202 | var stacked = stack.get(array);
|
1203 | if (stacked && stack.get(other)) {
|
1204 | return stacked == other;
|
1205 | }
|
1206 | var index = -1,
|
1207 | result = true,
|
1208 | seen = (bitmask & UNORDERED_COMPARE_FLAG) ? new SetCache : undefined;
|
1209 |
|
1210 | stack.set(array, other);
|
1211 | stack.set(other, array);
|
1212 |
|
1213 | // Ignore non-index properties.
|
1214 | while (++index < arrLength) {
|
1215 | var arrValue = array[index],
|
1216 | othValue = other[index];
|
1217 |
|
1218 | if (customizer) {
|
1219 | var compared = isPartial
|
1220 | ? customizer(othValue, arrValue, index, other, array, stack)
|
1221 | : customizer(arrValue, othValue, index, array, other, stack);
|
1222 | }
|
1223 | if (compared !== undefined) {
|
1224 | if (compared) {
|
1225 | continue;
|
1226 | }
|
1227 | result = false;
|
1228 | break;
|
1229 | }
|
1230 | // Recursively compare arrays (susceptible to call stack limits).
|
1231 | if (seen) {
|
1232 | if (!arraySome(other, function(othValue, othIndex) {
|
1233 | if (!seen.has(othIndex) &&
|
1234 | (arrValue === othValue || equalFunc(arrValue, othValue, customizer, bitmask, stack))) {
|
1235 | return seen.add(othIndex);
|
1236 | }
|
1237 | })) {
|
1238 | result = false;
|
1239 | break;
|
1240 | }
|
1241 | } else if (!(
|
1242 | arrValue === othValue ||
|
1243 | equalFunc(arrValue, othValue, customizer, bitmask, stack)
|
1244 | )) {
|
1245 | result = false;
|
1246 | break;
|
1247 | }
|
1248 | }
|
1249 | stack['delete'](array);
|
1250 | stack['delete'](other);
|
1251 | return result;
|
1252 | }
|
1253 |
|
1254 | /**
|
1255 | * A specialized version of `baseIsEqualDeep` for comparing objects of
|
1256 | * the same `toStringTag`.
|
1257 | *
|
1258 | * **Note:** This function only supports comparing values with tags of
|
1259 | * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
|
1260 | *
|
1261 | * @private
|
1262 | * @param {Object} object The object to compare.
|
1263 | * @param {Object} other The other object to compare.
|
1264 | * @param {string} tag The `toStringTag` of the objects to compare.
|
1265 | * @param {Function} equalFunc The function to determine equivalents of values.
|
1266 | * @param {Function} customizer The function to customize comparisons.
|
1267 | * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`
|
1268 | * for more details.
|
1269 | * @param {Object} stack Tracks traversed `object` and `other` objects.
|
1270 | * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
|
1271 | */
|
1272 | function equalByTag(object, other, tag, equalFunc, customizer, bitmask, stack) {
|
1273 | switch (tag) {
|
1274 | case dataViewTag:
|
1275 | if ((object.byteLength != other.byteLength) ||
|
1276 | (object.byteOffset != other.byteOffset)) {
|
1277 | return false;
|
1278 | }
|
1279 | object = object.buffer;
|
1280 | other = other.buffer;
|
1281 |
|
1282 | case arrayBufferTag:
|
1283 | if ((object.byteLength != other.byteLength) ||
|
1284 | !equalFunc(new Uint8Array(object), new Uint8Array(other))) {
|
1285 | return false;
|
1286 | }
|
1287 | return true;
|
1288 |
|
1289 | case boolTag:
|
1290 | case dateTag:
|
1291 | case numberTag:
|
1292 | // Coerce booleans to `1` or `0` and dates to milliseconds.
|
1293 | // Invalid dates are coerced to `NaN`.
|
1294 | return eq(+object, +other);
|
1295 |
|
1296 | case errorTag:
|
1297 | return object.name == other.name && object.message == other.message;
|
1298 |
|
1299 | case regexpTag:
|
1300 | case stringTag:
|
1301 | // Coerce regexes to strings and treat strings, primitives and objects,
|
1302 | // as equal. See http://www.ecma-international.org/ecma-262/6.0/#sec-regexp.prototype.tostring
|
1303 | // for more details.
|
1304 | return object == (other + '');
|
1305 |
|
1306 | case mapTag:
|
1307 | var convert = mapToArray;
|
1308 |
|
1309 | case setTag:
|
1310 | var isPartial = bitmask & PARTIAL_COMPARE_FLAG;
|
1311 | convert || (convert = setToArray);
|
1312 |
|
1313 | if (object.size != other.size && !isPartial) {
|
1314 | return false;
|
1315 | }
|
1316 | // Assume cyclic values are equal.
|
1317 | var stacked = stack.get(object);
|
1318 | if (stacked) {
|
1319 | return stacked == other;
|
1320 | }
|
1321 | bitmask |= UNORDERED_COMPARE_FLAG;
|
1322 |
|
1323 | // Recursively compare objects (susceptible to call stack limits).
|
1324 | stack.set(object, other);
|
1325 | var result = equalArrays(convert(object), convert(other), equalFunc, customizer, bitmask, stack);
|
1326 | stack['delete'](object);
|
1327 | return result;
|
1328 |
|
1329 | case symbolTag:
|
1330 | if (symbolValueOf) {
|
1331 | return symbolValueOf.call(object) == symbolValueOf.call(other);
|
1332 | }
|
1333 | }
|
1334 | return false;
|
1335 | }
|
1336 |
|
1337 | /**
|
1338 | * A specialized version of `baseIsEqualDeep` for objects with support for
|
1339 | * partial deep comparisons.
|
1340 | *
|
1341 | * @private
|
1342 | * @param {Object} object The object to compare.
|
1343 | * @param {Object} other The other object to compare.
|
1344 | * @param {Function} equalFunc The function to determine equivalents of values.
|
1345 | * @param {Function} customizer The function to customize comparisons.
|
1346 | * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`
|
1347 | * for more details.
|
1348 | * @param {Object} stack Tracks traversed `object` and `other` objects.
|
1349 | * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
|
1350 | */
|
1351 | function equalObjects(object, other, equalFunc, customizer, bitmask, stack) {
|
1352 | var isPartial = bitmask & PARTIAL_COMPARE_FLAG,
|
1353 | objProps = keys(object),
|
1354 | objLength = objProps.length,
|
1355 | othProps = keys(other),
|
1356 | othLength = othProps.length;
|
1357 |
|
1358 | if (objLength != othLength && !isPartial) {
|
1359 | return false;
|
1360 | }
|
1361 | var index = objLength;
|
1362 | while (index--) {
|
1363 | var key = objProps[index];
|
1364 | if (!(isPartial ? key in other : baseHas(other, key))) {
|
1365 | return false;
|
1366 | }
|
1367 | }
|
1368 | // Assume cyclic values are equal.
|
1369 | var stacked = stack.get(object);
|
1370 | if (stacked && stack.get(other)) {
|
1371 | return stacked == other;
|
1372 | }
|
1373 | var result = true;
|
1374 | stack.set(object, other);
|
1375 | stack.set(other, object);
|
1376 |
|
1377 | var skipCtor = isPartial;
|
1378 | while (++index < objLength) {
|
1379 | key = objProps[index];
|
1380 | var objValue = object[key],
|
1381 | othValue = other[key];
|
1382 |
|
1383 | if (customizer) {
|
1384 | var compared = isPartial
|
1385 | ? customizer(othValue, objValue, key, other, object, stack)
|
1386 | : customizer(objValue, othValue, key, object, other, stack);
|
1387 | }
|
1388 | // Recursively compare objects (susceptible to call stack limits).
|
1389 | if (!(compared === undefined
|
1390 | ? (objValue === othValue || equalFunc(objValue, othValue, customizer, bitmask, stack))
|
1391 | : compared
|
1392 | )) {
|
1393 | result = false;
|
1394 | break;
|
1395 | }
|
1396 | skipCtor || (skipCtor = key == 'constructor');
|
1397 | }
|
1398 | if (result && !skipCtor) {
|
1399 | var objCtor = object.constructor,
|
1400 | othCtor = other.constructor;
|
1401 |
|
1402 | // Non `Object` object instances with different constructors are not equal.
|
1403 | if (objCtor != othCtor &&
|
1404 | ('constructor' in object && 'constructor' in other) &&
|
1405 | !(typeof objCtor == 'function' && objCtor instanceof objCtor &&
|
1406 | typeof othCtor == 'function' && othCtor instanceof othCtor)) {
|
1407 | result = false;
|
1408 | }
|
1409 | }
|
1410 | stack['delete'](object);
|
1411 | stack['delete'](other);
|
1412 | return result;
|
1413 | }
|
1414 |
|
1415 | /**
|
1416 | * Gets the "length" property value of `object`.
|
1417 | *
|
1418 | * **Note:** This function is used to avoid a
|
1419 | * [JIT bug](https://bugs.webkit.org/show_bug.cgi?id=142792) that affects
|
1420 | * Safari on at least iOS 8.1-8.3 ARM64.
|
1421 | *
|
1422 | * @private
|
1423 | * @param {Object} object The object to query.
|
1424 | * @returns {*} Returns the "length" value.
|
1425 | */
|
1426 | var getLength = baseProperty('length');
|
1427 |
|
1428 | /**
|
1429 | * Gets the data for `map`.
|
1430 | *
|
1431 | * @private
|
1432 | * @param {Object} map The map to query.
|
1433 | * @param {string} key The reference key.
|
1434 | * @returns {*} Returns the map data.
|
1435 | */
|
1436 | function getMapData(map, key) {
|
1437 | var data = map.__data__;
|
1438 | return isKeyable(key)
|
1439 | ? data[typeof key == 'string' ? 'string' : 'hash']
|
1440 | : data.map;
|
1441 | }
|
1442 |
|
1443 | /**
|
1444 | * Gets the property names, values, and compare flags of `object`.
|
1445 | *
|
1446 | * @private
|
1447 | * @param {Object} object The object to query.
|
1448 | * @returns {Array} Returns the match data of `object`.
|
1449 | */
|
1450 | function getMatchData(object) {
|
1451 | var result = keys(object),
|
1452 | length = result.length;
|
1453 |
|
1454 | while (length--) {
|
1455 | var key = result[length],
|
1456 | value = object[key];
|
1457 |
|
1458 | result[length] = [key, value, isStrictComparable(value)];
|
1459 | }
|
1460 | return result;
|
1461 | }
|
1462 |
|
1463 | /**
|
1464 | * Gets the native function at `key` of `object`.
|
1465 | *
|
1466 | * @private
|
1467 | * @param {Object} object The object to query.
|
1468 | * @param {string} key The key of the method to get.
|
1469 | * @returns {*} Returns the function if it's native, else `undefined`.
|
1470 | */
|
1471 | function getNative(object, key) {
|
1472 | var value = getValue(object, key);
|
1473 | return baseIsNative(value) ? value : undefined;
|
1474 | }
|
1475 |
|
1476 | /**
|
1477 | * Gets the `[[Prototype]]` of `value`.
|
1478 | *
|
1479 | * @private
|
1480 | * @param {*} value The value to query.
|
1481 | * @returns {null|Object} Returns the `[[Prototype]]`.
|
1482 | */
|
1483 | var getPrototype = overArg(nativeGetPrototype, Object);
|
1484 |
|
1485 | /**
|
1486 | * Gets the `toStringTag` of `value`.
|
1487 | *
|
1488 | * @private
|
1489 | * @param {*} value The value to query.
|
1490 | * @returns {string} Returns the `toStringTag`.
|
1491 | */
|
1492 | var getTag = baseGetTag;
|
1493 |
|
1494 | // Fallback for data views, maps, sets, and weak maps in IE 11,
|
1495 | // for data views in Edge, and promises in Node.js.
|
1496 | if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
|
1497 | (Map && getTag(new Map) != mapTag) ||
|
1498 | (Promise && getTag(Promise.resolve()) != promiseTag) ||
|
1499 | (Set && getTag(new Set) != setTag) ||
|
1500 | (WeakMap && getTag(new WeakMap) != weakMapTag)) {
|
1501 | getTag = function(value) {
|
1502 | var result = objectToString.call(value),
|
1503 | Ctor = result == objectTag ? value.constructor : undefined,
|
1504 | ctorString = Ctor ? toSource(Ctor) : undefined;
|
1505 |
|
1506 | if (ctorString) {
|
1507 | switch (ctorString) {
|
1508 | case dataViewCtorString: return dataViewTag;
|
1509 | case mapCtorString: return mapTag;
|
1510 | case promiseCtorString: return promiseTag;
|
1511 | case setCtorString: return setTag;
|
1512 | case weakMapCtorString: return weakMapTag;
|
1513 | }
|
1514 | }
|
1515 | return result;
|
1516 | };
|
1517 | }
|
1518 |
|
1519 | /**
|
1520 | * Checks if `path` exists on `object`.
|
1521 | *
|
1522 | * @private
|
1523 | * @param {Object} object The object to query.
|
1524 | * @param {Array|string} path The path to check.
|
1525 | * @param {Function} hasFunc The function to check properties.
|
1526 | * @returns {boolean} Returns `true` if `path` exists, else `false`.
|
1527 | */
|
1528 | function hasPath(object, path, hasFunc) {
|
1529 | path = isKey(path, object) ? [path] : castPath(path);
|
1530 |
|
1531 | var result,
|
1532 | index = -1,
|
1533 | length = path.length;
|
1534 |
|
1535 | while (++index < length) {
|
1536 | var key = toKey(path[index]);
|
1537 | if (!(result = object != null && hasFunc(object, key))) {
|
1538 | break;
|
1539 | }
|
1540 | object = object[key];
|
1541 | }
|
1542 | if (result) {
|
1543 | return result;
|
1544 | }
|
1545 | var length = object ? object.length : 0;
|
1546 | return !!length && isLength(length) && isIndex(key, length) &&
|
1547 | (isArray(object) || isString(object) || isArguments(object));
|
1548 | }
|
1549 |
|
1550 | /**
|
1551 | * Creates an array of index keys for `object` values of arrays,
|
1552 | * `arguments` objects, and strings, otherwise `null` is returned.
|
1553 | *
|
1554 | * @private
|
1555 | * @param {Object} object The object to query.
|
1556 | * @returns {Array|null} Returns index keys, else `null`.
|
1557 | */
|
1558 | function indexKeys(object) {
|
1559 | var length = object ? object.length : undefined;
|
1560 | if (isLength(length) &&
|
1561 | (isArray(object) || isString(object) || isArguments(object))) {
|
1562 | return baseTimes(length, String);
|
1563 | }
|
1564 | return null;
|
1565 | }
|
1566 |
|
1567 | /**
|
1568 | * Checks if `value` is a valid array-like index.
|
1569 | *
|
1570 | * @private
|
1571 | * @param {*} value The value to check.
|
1572 | * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
|
1573 | * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
|
1574 | */
|
1575 | function isIndex(value, length) {
|
1576 | length = length == null ? MAX_SAFE_INTEGER : length;
|
1577 | return !!length &&
|
1578 | (typeof value == 'number' || reIsUint.test(value)) &&
|
1579 | (value > -1 && value % 1 == 0 && value < length);
|
1580 | }
|
1581 |
|
1582 | /**
|
1583 | * Checks if `value` is a property name and not a property path.
|
1584 | *
|
1585 | * @private
|
1586 | * @param {*} value The value to check.
|
1587 | * @param {Object} [object] The object to query keys on.
|
1588 | * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
|
1589 | */
|
1590 | function isKey(value, object) {
|
1591 | if (isArray(value)) {
|
1592 | return false;
|
1593 | }
|
1594 | var type = typeof value;
|
1595 | if (type == 'number' || type == 'symbol' || type == 'boolean' ||
|
1596 | value == null || isSymbol(value)) {
|
1597 | return true;
|
1598 | }
|
1599 | return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
|
1600 | (object != null && value in Object(object));
|
1601 | }
|
1602 |
|
1603 | /**
|
1604 | * Checks if `value` is suitable for use as unique object key.
|
1605 | *
|
1606 | * @private
|
1607 | * @param {*} value The value to check.
|
1608 | * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
|
1609 | */
|
1610 | function isKeyable(value) {
|
1611 | var type = typeof value;
|
1612 | return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
|
1613 | ? (value !== '__proto__')
|
1614 | : (value === null);
|
1615 | }
|
1616 |
|
1617 | /**
|
1618 | * Checks if `func` has its source masked.
|
1619 | *
|
1620 | * @private
|
1621 | * @param {Function} func The function to check.
|
1622 | * @returns {boolean} Returns `true` if `func` is masked, else `false`.
|
1623 | */
|
1624 | function isMasked(func) {
|
1625 | return !!maskSrcKey && (maskSrcKey in func);
|
1626 | }
|
1627 |
|
1628 | /**
|
1629 | * Checks if `value` is likely a prototype object.
|
1630 | *
|
1631 | * @private
|
1632 | * @param {*} value The value to check.
|
1633 | * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
|
1634 | */
|
1635 | function isPrototype(value) {
|
1636 | var Ctor = value && value.constructor,
|
1637 | proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;
|
1638 |
|
1639 | return value === proto;
|
1640 | }
|
1641 |
|
1642 | /**
|
1643 | * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
|
1644 | *
|
1645 | * @private
|
1646 | * @param {*} value The value to check.
|
1647 | * @returns {boolean} Returns `true` if `value` if suitable for strict
|
1648 | * equality comparisons, else `false`.
|
1649 | */
|
1650 | function isStrictComparable(value) {
|
1651 | return value === value && !isObject(value);
|
1652 | }
|
1653 |
|
1654 | /**
|
1655 | * A specialized version of `matchesProperty` for source values suitable
|
1656 | * for strict equality comparisons, i.e. `===`.
|
1657 | *
|
1658 | * @private
|
1659 | * @param {string} key The key of the property to get.
|
1660 | * @param {*} srcValue The value to match.
|
1661 | * @returns {Function} Returns the new spec function.
|
1662 | */
|
1663 | function matchesStrictComparable(key, srcValue) {
|
1664 | return function(object) {
|
1665 | if (object == null) {
|
1666 | return false;
|
1667 | }
|
1668 | return object[key] === srcValue &&
|
1669 | (srcValue !== undefined || (key in Object(object)));
|
1670 | };
|
1671 | }
|
1672 |
|
1673 | /**
|
1674 | * Converts `string` to a property path array.
|
1675 | *
|
1676 | * @private
|
1677 | * @param {string} string The string to convert.
|
1678 | * @returns {Array} Returns the property path array.
|
1679 | */
|
1680 | var stringToPath = memoize(function(string) {
|
1681 | string = toString(string);
|
1682 |
|
1683 | var result = [];
|
1684 | if (reLeadingDot.test(string)) {
|
1685 | result.push('');
|
1686 | }
|
1687 | string.replace(rePropName, function(match, number, quote, string) {
|
1688 | result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match));
|
1689 | });
|
1690 | return result;
|
1691 | });
|
1692 |
|
1693 | /**
|
1694 | * Converts `value` to a string key if it's not a string or symbol.
|
1695 | *
|
1696 | * @private
|
1697 | * @param {*} value The value to inspect.
|
1698 | * @returns {string|symbol} Returns the key.
|
1699 | */
|
1700 | function toKey(value) {
|
1701 | if (typeof value == 'string' || isSymbol(value)) {
|
1702 | return value;
|
1703 | }
|
1704 | var result = (value + '');
|
1705 | return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
|
1706 | }
|
1707 |
|
1708 | /**
|
1709 | * Converts `func` to its source code.
|
1710 | *
|
1711 | * @private
|
1712 | * @param {Function} func The function to process.
|
1713 | * @returns {string} Returns the source code.
|
1714 | */
|
1715 | function toSource(func) {
|
1716 | if (func != null) {
|
1717 | try {
|
1718 | return funcToString.call(func);
|
1719 | } catch (e) {}
|
1720 | try {
|
1721 | return (func + '');
|
1722 | } catch (e) {}
|
1723 | }
|
1724 | return '';
|
1725 | }
|
1726 |
|
1727 | /**
|
1728 | * Creates a function that memoizes the result of `func`. If `resolver` is
|
1729 | * provided, it determines the cache key for storing the result based on the
|
1730 | * arguments provided to the memoized function. By default, the first argument
|
1731 | * provided to the memoized function is used as the map cache key. The `func`
|
1732 | * is invoked with the `this` binding of the memoized function.
|
1733 | *
|
1734 | * **Note:** The cache is exposed as the `cache` property on the memoized
|
1735 | * function. Its creation may be customized by replacing the `_.memoize.Cache`
|
1736 | * constructor with one whose instances implement the
|
1737 | * [`Map`](http://ecma-international.org/ecma-262/6.0/#sec-properties-of-the-map-prototype-object)
|
1738 | * method interface of `delete`, `get`, `has`, and `set`.
|
1739 | *
|
1740 | * @static
|
1741 | * @memberOf _
|
1742 | * @since 0.1.0
|
1743 | * @category Function
|
1744 | * @param {Function} func The function to have its output memoized.
|
1745 | * @param {Function} [resolver] The function to resolve the cache key.
|
1746 | * @returns {Function} Returns the new memoized function.
|
1747 | * @example
|
1748 | *
|
1749 | * var object = { 'a': 1, 'b': 2 };
|
1750 | * var other = { 'c': 3, 'd': 4 };
|
1751 | *
|
1752 | * var values = _.memoize(_.values);
|
1753 | * values(object);
|
1754 | * // => [1, 2]
|
1755 | *
|
1756 | * values(other);
|
1757 | * // => [3, 4]
|
1758 | *
|
1759 | * object.a = 2;
|
1760 | * values(object);
|
1761 | * // => [1, 2]
|
1762 | *
|
1763 | * // Modify the result cache.
|
1764 | * values.cache.set(object, ['a', 'b']);
|
1765 | * values(object);
|
1766 | * // => ['a', 'b']
|
1767 | *
|
1768 | * // Replace `_.memoize.Cache`.
|
1769 | * _.memoize.Cache = WeakMap;
|
1770 | */
|
1771 | function memoize(func, resolver) {
|
1772 | if (typeof func != 'function' || (resolver && typeof resolver != 'function')) {
|
1773 | throw new TypeError(FUNC_ERROR_TEXT);
|
1774 | }
|
1775 | var memoized = function() {
|
1776 | var args = arguments,
|
1777 | key = resolver ? resolver.apply(this, args) : args[0],
|
1778 | cache = memoized.cache;
|
1779 |
|
1780 | if (cache.has(key)) {
|
1781 | return cache.get(key);
|
1782 | }
|
1783 | var result = func.apply(this, args);
|
1784 | memoized.cache = cache.set(key, result);
|
1785 | return result;
|
1786 | };
|
1787 | memoized.cache = new (memoize.Cache || MapCache);
|
1788 | return memoized;
|
1789 | }
|
1790 |
|
1791 | // Assign cache to `_.memoize`.
|
1792 | memoize.Cache = MapCache;
|
1793 |
|
1794 | /**
|
1795 | * Performs a
|
1796 | * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
|
1797 | * comparison between two values to determine if they are equivalent.
|
1798 | *
|
1799 | * @static
|
1800 | * @memberOf _
|
1801 | * @since 4.0.0
|
1802 | * @category Lang
|
1803 | * @param {*} value The value to compare.
|
1804 | * @param {*} other The other value to compare.
|
1805 | * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
|
1806 | * @example
|
1807 | *
|
1808 | * var object = { 'a': 1 };
|
1809 | * var other = { 'a': 1 };
|
1810 | *
|
1811 | * _.eq(object, object);
|
1812 | * // => true
|
1813 | *
|
1814 | * _.eq(object, other);
|
1815 | * // => false
|
1816 | *
|
1817 | * _.eq('a', 'a');
|
1818 | * // => true
|
1819 | *
|
1820 | * _.eq('a', Object('a'));
|
1821 | * // => false
|
1822 | *
|
1823 | * _.eq(NaN, NaN);
|
1824 | * // => true
|
1825 | */
|
1826 | function eq(value, other) {
|
1827 | return value === other || (value !== value && other !== other);
|
1828 | }
|
1829 |
|
1830 | /**
|
1831 | * Checks if `value` is likely an `arguments` object.
|
1832 | *
|
1833 | * @static
|
1834 | * @memberOf _
|
1835 | * @since 0.1.0
|
1836 | * @category Lang
|
1837 | * @param {*} value The value to check.
|
1838 | * @returns {boolean} Returns `true` if `value` is an `arguments` object,
|
1839 | * else `false`.
|
1840 | * @example
|
1841 | *
|
1842 | * _.isArguments(function() { return arguments; }());
|
1843 | * // => true
|
1844 | *
|
1845 | * _.isArguments([1, 2, 3]);
|
1846 | * // => false
|
1847 | */
|
1848 | function isArguments(value) {
|
1849 | // Safari 8.1 incorrectly makes `arguments.callee` enumerable in strict mode.
|
1850 | return isArrayLikeObject(value) && hasOwnProperty.call(value, 'callee') &&
|
1851 | (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag);
|
1852 | }
|
1853 |
|
1854 | /**
|
1855 | * Checks if `value` is classified as an `Array` object.
|
1856 | *
|
1857 | * @static
|
1858 | * @memberOf _
|
1859 | * @since 0.1.0
|
1860 | * @category Lang
|
1861 | * @param {*} value The value to check.
|
1862 | * @returns {boolean} Returns `true` if `value` is an array, else `false`.
|
1863 | * @example
|
1864 | *
|
1865 | * _.isArray([1, 2, 3]);
|
1866 | * // => true
|
1867 | *
|
1868 | * _.isArray(document.body.children);
|
1869 | * // => false
|
1870 | *
|
1871 | * _.isArray('abc');
|
1872 | * // => false
|
1873 | *
|
1874 | * _.isArray(_.noop);
|
1875 | * // => false
|
1876 | */
|
1877 | var isArray = Array.isArray;
|
1878 |
|
1879 | /**
|
1880 | * Checks if `value` is array-like. A value is considered array-like if it's
|
1881 | * not a function and has a `value.length` that's an integer greater than or
|
1882 | * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
|
1883 | *
|
1884 | * @static
|
1885 | * @memberOf _
|
1886 | * @since 4.0.0
|
1887 | * @category Lang
|
1888 | * @param {*} value The value to check.
|
1889 | * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
|
1890 | * @example
|
1891 | *
|
1892 | * _.isArrayLike([1, 2, 3]);
|
1893 | * // => true
|
1894 | *
|
1895 | * _.isArrayLike(document.body.children);
|
1896 | * // => true
|
1897 | *
|
1898 | * _.isArrayLike('abc');
|
1899 | * // => true
|
1900 | *
|
1901 | * _.isArrayLike(_.noop);
|
1902 | * // => false
|
1903 | */
|
1904 | function isArrayLike(value) {
|
1905 | return value != null && isLength(getLength(value)) && !isFunction(value);
|
1906 | }
|
1907 |
|
1908 | /**
|
1909 | * This method is like `_.isArrayLike` except that it also checks if `value`
|
1910 | * is an object.
|
1911 | *
|
1912 | * @static
|
1913 | * @memberOf _
|
1914 | * @since 4.0.0
|
1915 | * @category Lang
|
1916 | * @param {*} value The value to check.
|
1917 | * @returns {boolean} Returns `true` if `value` is an array-like object,
|
1918 | * else `false`.
|
1919 | * @example
|
1920 | *
|
1921 | * _.isArrayLikeObject([1, 2, 3]);
|
1922 | * // => true
|
1923 | *
|
1924 | * _.isArrayLikeObject(document.body.children);
|
1925 | * // => true
|
1926 | *
|
1927 | * _.isArrayLikeObject('abc');
|
1928 | * // => false
|
1929 | *
|
1930 | * _.isArrayLikeObject(_.noop);
|
1931 | * // => false
|
1932 | */
|
1933 | function isArrayLikeObject(value) {
|
1934 | return isObjectLike(value) && isArrayLike(value);
|
1935 | }
|
1936 |
|
1937 | /**
|
1938 | * Checks if `value` is classified as a `Function` object.
|
1939 | *
|
1940 | * @static
|
1941 | * @memberOf _
|
1942 | * @since 0.1.0
|
1943 | * @category Lang
|
1944 | * @param {*} value The value to check.
|
1945 | * @returns {boolean} Returns `true` if `value` is a function, else `false`.
|
1946 | * @example
|
1947 | *
|
1948 | * _.isFunction(_);
|
1949 | * // => true
|
1950 | *
|
1951 | * _.isFunction(/abc/);
|
1952 | * // => false
|
1953 | */
|
1954 | function isFunction(value) {
|
1955 | // The use of `Object#toString` avoids issues with the `typeof` operator
|
1956 | // in Safari 8 which returns 'object' for typed array and weak map constructors,
|
1957 | // and PhantomJS 1.9 which returns 'function' for `NodeList` instances.
|
1958 | var tag = isObject(value) ? objectToString.call(value) : '';
|
1959 | return tag == funcTag || tag == genTag;
|
1960 | }
|
1961 |
|
1962 | /**
|
1963 | * Checks if `value` is a valid array-like length.
|
1964 | *
|
1965 | * **Note:** This function is loosely based on
|
1966 | * [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength).
|
1967 | *
|
1968 | * @static
|
1969 | * @memberOf _
|
1970 | * @since 4.0.0
|
1971 | * @category Lang
|
1972 | * @param {*} value The value to check.
|
1973 | * @returns {boolean} Returns `true` if `value` is a valid length,
|
1974 | * else `false`.
|
1975 | * @example
|
1976 | *
|
1977 | * _.isLength(3);
|
1978 | * // => true
|
1979 | *
|
1980 | * _.isLength(Number.MIN_VALUE);
|
1981 | * // => false
|
1982 | *
|
1983 | * _.isLength(Infinity);
|
1984 | * // => false
|
1985 | *
|
1986 | * _.isLength('3');
|
1987 | * // => false
|
1988 | */
|
1989 | function isLength(value) {
|
1990 | return typeof value == 'number' &&
|
1991 | value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
|
1992 | }
|
1993 |
|
1994 | /**
|
1995 | * Checks if `value` is the
|
1996 | * [language type](http://www.ecma-international.org/ecma-262/6.0/#sec-ecmascript-language-types)
|
1997 | * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
|
1998 | *
|
1999 | * @static
|
2000 | * @memberOf _
|
2001 | * @since 0.1.0
|
2002 | * @category Lang
|
2003 | * @param {*} value The value to check.
|
2004 | * @returns {boolean} Returns `true` if `value` is an object, else `false`.
|
2005 | * @example
|
2006 | *
|
2007 | * _.isObject({});
|
2008 | * // => true
|
2009 | *
|
2010 | * _.isObject([1, 2, 3]);
|
2011 | * // => true
|
2012 | *
|
2013 | * _.isObject(_.noop);
|
2014 | * // => true
|
2015 | *
|
2016 | * _.isObject(null);
|
2017 | * // => false
|
2018 | */
|
2019 | function isObject(value) {
|
2020 | var type = typeof value;
|
2021 | return !!value && (type == 'object' || type == 'function');
|
2022 | }
|
2023 |
|
2024 | /**
|
2025 | * Checks if `value` is object-like. A value is object-like if it's not `null`
|
2026 | * and has a `typeof` result of "object".
|
2027 | *
|
2028 | * @static
|
2029 | * @memberOf _
|
2030 | * @since 4.0.0
|
2031 | * @category Lang
|
2032 | * @param {*} value The value to check.
|
2033 | * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
|
2034 | * @example
|
2035 | *
|
2036 | * _.isObjectLike({});
|
2037 | * // => true
|
2038 | *
|
2039 | * _.isObjectLike([1, 2, 3]);
|
2040 | * // => true
|
2041 | *
|
2042 | * _.isObjectLike(_.noop);
|
2043 | * // => false
|
2044 | *
|
2045 | * _.isObjectLike(null);
|
2046 | * // => false
|
2047 | */
|
2048 | function isObjectLike(value) {
|
2049 | return !!value && typeof value == 'object';
|
2050 | }
|
2051 |
|
2052 | /**
|
2053 | * Checks if `value` is classified as a `String` primitive or object.
|
2054 | *
|
2055 | * @static
|
2056 | * @since 0.1.0
|
2057 | * @memberOf _
|
2058 | * @category Lang
|
2059 | * @param {*} value The value to check.
|
2060 | * @returns {boolean} Returns `true` if `value` is a string, else `false`.
|
2061 | * @example
|
2062 | *
|
2063 | * _.isString('abc');
|
2064 | * // => true
|
2065 | *
|
2066 | * _.isString(1);
|
2067 | * // => false
|
2068 | */
|
2069 | function isString(value) {
|
2070 | return typeof value == 'string' ||
|
2071 | (!isArray(value) && isObjectLike(value) && objectToString.call(value) == stringTag);
|
2072 | }
|
2073 |
|
2074 | /**
|
2075 | * Checks if `value` is classified as a `Symbol` primitive or object.
|
2076 | *
|
2077 | * @static
|
2078 | * @memberOf _
|
2079 | * @since 4.0.0
|
2080 | * @category Lang
|
2081 | * @param {*} value The value to check.
|
2082 | * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
|
2083 | * @example
|
2084 | *
|
2085 | * _.isSymbol(Symbol.iterator);
|
2086 | * // => true
|
2087 | *
|
2088 | * _.isSymbol('abc');
|
2089 | * // => false
|
2090 | */
|
2091 | function isSymbol(value) {
|
2092 | return typeof value == 'symbol' ||
|
2093 | (isObjectLike(value) && objectToString.call(value) == symbolTag);
|
2094 | }
|
2095 |
|
2096 | /**
|
2097 | * Checks if `value` is classified as a typed array.
|
2098 | *
|
2099 | * @static
|
2100 | * @memberOf _
|
2101 | * @since 3.0.0
|
2102 | * @category Lang
|
2103 | * @param {*} value The value to check.
|
2104 | * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
|
2105 | * @example
|
2106 | *
|
2107 | * _.isTypedArray(new Uint8Array);
|
2108 | * // => true
|
2109 | *
|
2110 | * _.isTypedArray([]);
|
2111 | * // => false
|
2112 | */
|
2113 | var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;
|
2114 |
|
2115 | /**
|
2116 | * Converts `value` to a string. An empty string is returned for `null`
|
2117 | * and `undefined` values. The sign of `-0` is preserved.
|
2118 | *
|
2119 | * @static
|
2120 | * @memberOf _
|
2121 | * @since 4.0.0
|
2122 | * @category Lang
|
2123 | * @param {*} value The value to process.
|
2124 | * @returns {string} Returns the string.
|
2125 | * @example
|
2126 | *
|
2127 | * _.toString(null);
|
2128 | * // => ''
|
2129 | *
|
2130 | * _.toString(-0);
|
2131 | * // => '-0'
|
2132 | *
|
2133 | * _.toString([1, 2, 3]);
|
2134 | * // => '1,2,3'
|
2135 | */
|
2136 | function toString(value) {
|
2137 | return value == null ? '' : baseToString(value);
|
2138 | }
|
2139 |
|
2140 | /**
|
2141 | * Gets the value at `path` of `object`. If the resolved value is
|
2142 | * `undefined`, the `defaultValue` is returned in its place.
|
2143 | *
|
2144 | * @static
|
2145 | * @memberOf _
|
2146 | * @since 3.7.0
|
2147 | * @category Object
|
2148 | * @param {Object} object The object to query.
|
2149 | * @param {Array|string} path The path of the property to get.
|
2150 | * @param {*} [defaultValue] The value returned for `undefined` resolved values.
|
2151 | * @returns {*} Returns the resolved value.
|
2152 | * @example
|
2153 | *
|
2154 | * var object = { 'a': [{ 'b': { 'c': 3 } }] };
|
2155 | *
|
2156 | * _.get(object, 'a[0].b.c');
|
2157 | * // => 3
|
2158 | *
|
2159 | * _.get(object, ['a', '0', 'b', 'c']);
|
2160 | * // => 3
|
2161 | *
|
2162 | * _.get(object, 'a.b.c', 'default');
|
2163 | * // => 'default'
|
2164 | */
|
2165 | function get(object, path, defaultValue) {
|
2166 | var result = object == null ? undefined : baseGet(object, path);
|
2167 | return result === undefined ? defaultValue : result;
|
2168 | }
|
2169 |
|
2170 | /**
|
2171 | * Checks if `path` is a direct or inherited property of `object`.
|
2172 | *
|
2173 | * @static
|
2174 | * @memberOf _
|
2175 | * @since 4.0.0
|
2176 | * @category Object
|
2177 | * @param {Object} object The object to query.
|
2178 | * @param {Array|string} path The path to check.
|
2179 | * @returns {boolean} Returns `true` if `path` exists, else `false`.
|
2180 | * @example
|
2181 | *
|
2182 | * var object = _.create({ 'a': _.create({ 'b': 2 }) });
|
2183 | *
|
2184 | * _.hasIn(object, 'a');
|
2185 | * // => true
|
2186 | *
|
2187 | * _.hasIn(object, 'a.b');
|
2188 | * // => true
|
2189 | *
|
2190 | * _.hasIn(object, ['a', 'b']);
|
2191 | * // => true
|
2192 | *
|
2193 | * _.hasIn(object, 'b');
|
2194 | * // => false
|
2195 | */
|
2196 | function hasIn(object, path) {
|
2197 | return object != null && hasPath(object, path, baseHasIn);
|
2198 | }
|
2199 |
|
2200 | /**
|
2201 | * Creates an array of the own enumerable property names of `object`.
|
2202 | *
|
2203 | * **Note:** Non-object values are coerced to objects. See the
|
2204 | * [ES spec](http://ecma-international.org/ecma-262/6.0/#sec-object.keys)
|
2205 | * for more details.
|
2206 | *
|
2207 | * @static
|
2208 | * @since 0.1.0
|
2209 | * @memberOf _
|
2210 | * @category Object
|
2211 | * @param {Object} object The object to query.
|
2212 | * @returns {Array} Returns the array of property names.
|
2213 | * @example
|
2214 | *
|
2215 | * function Foo() {
|
2216 | * this.a = 1;
|
2217 | * this.b = 2;
|
2218 | * }
|
2219 | *
|
2220 | * Foo.prototype.c = 3;
|
2221 | *
|
2222 | * _.keys(new Foo);
|
2223 | * // => ['a', 'b'] (iteration order is not guaranteed)
|
2224 | *
|
2225 | * _.keys('hi');
|
2226 | * // => ['0', '1']
|
2227 | */
|
2228 | function keys(object) {
|
2229 | var isProto = isPrototype(object);
|
2230 | if (!(isProto || isArrayLike(object))) {
|
2231 | return baseKeys(object);
|
2232 | }
|
2233 | var indexes = indexKeys(object),
|
2234 | skipIndexes = !!indexes,
|
2235 | result = indexes || [],
|
2236 | length = result.length;
|
2237 |
|
2238 | for (var key in object) {
|
2239 | if (baseHas(object, key) &&
|
2240 | !(skipIndexes && (key == 'length' || isIndex(key, length))) &&
|
2241 | !(isProto && key == 'constructor')) {
|
2242 | result.push(key);
|
2243 | }
|
2244 | }
|
2245 | return result;
|
2246 | }
|
2247 |
|
2248 | /**
|
2249 | * This method returns the first argument it receives.
|
2250 | *
|
2251 | * @static
|
2252 | * @since 0.1.0
|
2253 | * @memberOf _
|
2254 | * @category Util
|
2255 | * @param {*} value Any value.
|
2256 | * @returns {*} Returns `value`.
|
2257 | * @example
|
2258 | *
|
2259 | * var object = { 'a': 1 };
|
2260 | *
|
2261 | * console.log(_.identity(object) === object);
|
2262 | * // => true
|
2263 | */
|
2264 | function identity(value) {
|
2265 | return value;
|
2266 | }
|
2267 |
|
2268 | /**
|
2269 | * Creates a function that returns the value at `path` of a given object.
|
2270 | *
|
2271 | * @static
|
2272 | * @memberOf _
|
2273 | * @since 2.4.0
|
2274 | * @category Util
|
2275 | * @param {Array|string} path The path of the property to get.
|
2276 | * @returns {Function} Returns the new accessor function.
|
2277 | * @example
|
2278 | *
|
2279 | * var objects = [
|
2280 | * { 'a': { 'b': 2 } },
|
2281 | * { 'a': { 'b': 1 } }
|
2282 | * ];
|
2283 | *
|
2284 | * _.map(objects, _.property('a.b'));
|
2285 | * // => [2, 1]
|
2286 | *
|
2287 | * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');
|
2288 | * // => [1, 2]
|
2289 | */
|
2290 | function property(path) {
|
2291 | return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);
|
2292 | }
|
2293 |
|
2294 | /**
|
2295 | * This method is like `_.min` except that it accepts `iteratee` which is
|
2296 | * invoked for each element in `array` to generate the criterion by which
|
2297 | * the value is ranked. The iteratee is invoked with one argument: (value).
|
2298 | *
|
2299 | * @static
|
2300 | * @memberOf _
|
2301 | * @since 4.0.0
|
2302 | * @category Math
|
2303 | * @param {Array} array The array to iterate over.
|
2304 | * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
|
2305 | * @returns {*} Returns the minimum value.
|
2306 | * @example
|
2307 | *
|
2308 | * var objects = [{ 'n': 1 }, { 'n': 2 }];
|
2309 | *
|
2310 | * _.minBy(objects, function(o) { return o.n; });
|
2311 | * // => { 'n': 1 }
|
2312 | *
|
2313 | * // The `_.property` iteratee shorthand.
|
2314 | * _.minBy(objects, 'n');
|
2315 | * // => { 'n': 1 }
|
2316 | */
|
2317 | function minBy(array, iteratee) {
|
2318 | return (array && array.length)
|
2319 | ? baseExtremum(array, baseIteratee(iteratee, 2), baseLt)
|
2320 | : undefined;
|
2321 | }
|
2322 |
|
2323 | module.exports = minBy;
|