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 to stand-in for `undefined` hash values. */
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14 | var HASH_UNDEFINED = '__lodash_hash_undefined__';
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15 |
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16 | /** Used as references for various `Number` constants. */
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17 | var MAX_SAFE_INTEGER = 9007199254740991;
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18 |
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19 | /** `Object#toString` result references. */
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20 | var argsTag = '[object Arguments]',
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21 | arrayTag = '[object Array]',
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22 | boolTag = '[object Boolean]',
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23 | dateTag = '[object Date]',
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24 | errorTag = '[object Error]',
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25 | funcTag = '[object Function]',
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26 | genTag = '[object GeneratorFunction]',
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27 | mapTag = '[object Map]',
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28 | numberTag = '[object Number]',
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29 | objectTag = '[object Object]',
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30 | promiseTag = '[object Promise]',
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31 | regexpTag = '[object RegExp]',
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32 | setTag = '[object Set]',
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33 | stringTag = '[object String]',
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34 | symbolTag = '[object Symbol]',
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35 | weakMapTag = '[object WeakMap]';
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36 |
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37 | var arrayBufferTag = '[object ArrayBuffer]',
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38 | dataViewTag = '[object DataView]',
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39 | float32Tag = '[object Float32Array]',
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40 | float64Tag = '[object Float64Array]',
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41 | int8Tag = '[object Int8Array]',
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42 | int16Tag = '[object Int16Array]',
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43 | int32Tag = '[object Int32Array]',
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44 | uint8Tag = '[object Uint8Array]',
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45 | uint8ClampedTag = '[object Uint8ClampedArray]',
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46 | uint16Tag = '[object Uint16Array]',
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47 | uint32Tag = '[object Uint32Array]';
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48 |
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49 | /**
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50 | * Used to match `RegExp`
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51 | * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
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52 | */
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53 | var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;
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54 |
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55 | /** Used to match `RegExp` flags from their coerced string values. */
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56 | var reFlags = /\w*$/;
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57 |
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58 | /** Used to detect host constructors (Safari). */
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59 | var reIsHostCtor = /^\[object .+?Constructor\]$/;
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60 |
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61 | /** Used to detect unsigned integer values. */
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62 | var reIsUint = /^(?:0|[1-9]\d*)$/;
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63 |
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64 | /** Used to identify `toStringTag` values supported by `_.clone`. */
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65 | var cloneableTags = {};
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66 | cloneableTags[argsTag] = cloneableTags[arrayTag] =
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67 | cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =
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68 | cloneableTags[boolTag] = cloneableTags[dateTag] =
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69 | cloneableTags[float32Tag] = cloneableTags[float64Tag] =
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70 | cloneableTags[int8Tag] = cloneableTags[int16Tag] =
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71 | cloneableTags[int32Tag] = cloneableTags[mapTag] =
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72 | cloneableTags[numberTag] = cloneableTags[objectTag] =
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73 | cloneableTags[regexpTag] = cloneableTags[setTag] =
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74 | cloneableTags[stringTag] = cloneableTags[symbolTag] =
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75 | cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =
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76 | cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;
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77 | cloneableTags[errorTag] = cloneableTags[funcTag] =
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78 | cloneableTags[weakMapTag] = false;
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79 |
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80 | /** Detect free variable `global` from Node.js. */
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81 | var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;
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82 |
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83 | /** Detect free variable `self`. */
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84 | var freeSelf = typeof self == 'object' && self && self.Object === Object && self;
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85 |
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86 | /** Used as a reference to the global object. */
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87 | var root = freeGlobal || freeSelf || Function('return this')();
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88 |
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89 | /** Detect free variable `exports`. */
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90 | var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;
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91 |
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92 | /** Detect free variable `module`. */
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93 | var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;
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94 |
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95 | /** Detect the popular CommonJS extension `module.exports`. */
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96 | var moduleExports = freeModule && freeModule.exports === freeExports;
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97 |
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98 | /**
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99 | * Adds the key-value `pair` to `map`.
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100 | *
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101 | * @private
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102 | * @param {Object} map The map to modify.
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103 | * @param {Array} pair The key-value pair to add.
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104 | * @returns {Object} Returns `map`.
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105 | */
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106 | function addMapEntry(map, pair) {
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107 | // Don't return `map.set` because it's not chainable in IE 11.
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108 | map.set(pair[0], pair[1]);
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109 | return map;
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110 | }
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111 |
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112 | /**
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113 | * Adds `value` to `set`.
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114 | *
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115 | * @private
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116 | * @param {Object} set The set to modify.
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117 | * @param {*} value The value to add.
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118 | * @returns {Object} Returns `set`.
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119 | */
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120 | function addSetEntry(set, value) {
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121 | // Don't return `set.add` because it's not chainable in IE 11.
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122 | set.add(value);
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123 | return set;
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124 | }
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125 |
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126 | /**
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127 | * A specialized version of `_.forEach` for arrays without support for
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128 | * iteratee shorthands.
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129 | *
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130 | * @private
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131 | * @param {Array} [array] The array to iterate over.
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132 | * @param {Function} iteratee The function invoked per iteration.
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133 | * @returns {Array} Returns `array`.
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134 | */
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135 | function arrayEach(array, iteratee) {
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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 (iteratee(array[index], index, array) === false) {
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141 | break;
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142 | }
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143 | }
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144 | return array;
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145 | }
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146 |
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147 | /**
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148 | * Appends the elements of `values` to `array`.
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149 | *
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150 | * @private
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151 | * @param {Array} array The array to modify.
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152 | * @param {Array} values The values to append.
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153 | * @returns {Array} Returns `array`.
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154 | */
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155 | function arrayPush(array, values) {
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156 | var index = -1,
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157 | length = values.length,
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158 | offset = array.length;
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159 |
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160 | while (++index < length) {
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161 | array[offset + index] = values[index];
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162 | }
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163 | return array;
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164 | }
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165 |
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166 | /**
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167 | * A specialized version of `_.reduce` for arrays without support for
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168 | * iteratee shorthands.
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169 | *
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170 | * @private
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171 | * @param {Array} [array] The array to iterate over.
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172 | * @param {Function} iteratee The function invoked per iteration.
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173 | * @param {*} [accumulator] The initial value.
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174 | * @param {boolean} [initAccum] Specify using the first element of `array` as
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175 | * the initial value.
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176 | * @returns {*} Returns the accumulated value.
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177 | */
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178 | function arrayReduce(array, iteratee, accumulator, initAccum) {
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179 | var index = -1,
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180 | length = array ? array.length : 0;
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181 |
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182 | if (initAccum && length) {
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183 | accumulator = array[++index];
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184 | }
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185 | while (++index < length) {
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186 | accumulator = iteratee(accumulator, array[index], index, array);
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187 | }
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188 | return accumulator;
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189 | }
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190 |
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191 | /**
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192 | * The base implementation of `_.times` without support for iteratee shorthands
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193 | * or max array length checks.
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194 | *
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195 | * @private
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196 | * @param {number} n The number of times to invoke `iteratee`.
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197 | * @param {Function} iteratee The function invoked per iteration.
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198 | * @returns {Array} Returns the array of results.
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199 | */
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200 | function baseTimes(n, iteratee) {
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201 | var index = -1,
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202 | result = Array(n);
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203 |
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204 | while (++index < n) {
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205 | result[index] = iteratee(index);
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206 | }
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207 | return result;
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208 | }
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209 |
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210 | /**
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211 | * Gets the value at `key` of `object`.
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212 | *
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213 | * @private
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214 | * @param {Object} [object] The object to query.
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215 | * @param {string} key The key of the property to get.
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216 | * @returns {*} Returns the property value.
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217 | */
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218 | function getValue(object, key) {
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219 | return object == null ? undefined : object[key];
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220 | }
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221 |
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222 | /**
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223 | * Checks if `value` is a host object in IE < 9.
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224 | *
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225 | * @private
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226 | * @param {*} value The value to check.
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227 | * @returns {boolean} Returns `true` if `value` is a host object, else `false`.
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228 | */
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229 | function isHostObject(value) {
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230 | // Many host objects are `Object` objects that can coerce to strings
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231 | // despite having improperly defined `toString` methods.
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232 | var result = false;
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233 | if (value != null && typeof value.toString != 'function') {
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234 | try {
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235 | result = !!(value + '');
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236 | } catch (e) {}
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237 | }
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238 | return result;
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239 | }
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240 |
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241 | /**
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242 | * Converts `map` to its key-value pairs.
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243 | *
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244 | * @private
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245 | * @param {Object} map The map to convert.
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246 | * @returns {Array} Returns the key-value pairs.
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247 | */
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248 | function mapToArray(map) {
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249 | var index = -1,
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250 | result = Array(map.size);
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251 |
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252 | map.forEach(function(value, key) {
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253 | result[++index] = [key, value];
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254 | });
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255 | return result;
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256 | }
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257 |
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258 | /**
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259 | * Creates a unary function that invokes `func` with its argument transformed.
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260 | *
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261 | * @private
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262 | * @param {Function} func The function to wrap.
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263 | * @param {Function} transform The argument transform.
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264 | * @returns {Function} Returns the new function.
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265 | */
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266 | function overArg(func, transform) {
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267 | return function(arg) {
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268 | return func(transform(arg));
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269 | };
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270 | }
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271 |
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272 | /**
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273 | * Converts `set` to an array of its values.
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274 | *
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275 | * @private
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276 | * @param {Object} set The set to convert.
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277 | * @returns {Array} Returns the values.
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278 | */
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279 | function setToArray(set) {
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280 | var index = -1,
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281 | result = Array(set.size);
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282 |
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283 | set.forEach(function(value) {
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284 | result[++index] = value;
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285 | });
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286 | return result;
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287 | }
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288 |
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289 | /** Used for built-in method references. */
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290 | var arrayProto = Array.prototype,
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291 | funcProto = Function.prototype,
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292 | objectProto = Object.prototype;
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293 |
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294 | /** Used to detect overreaching core-js shims. */
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295 | var coreJsData = root['__core-js_shared__'];
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296 |
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297 | /** Used to detect methods masquerading as native. */
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298 | var maskSrcKey = (function() {
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299 | var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
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300 | return uid ? ('Symbol(src)_1.' + uid) : '';
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301 | }());
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302 |
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303 | /** Used to resolve the decompiled source of functions. */
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304 | var funcToString = funcProto.toString;
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305 |
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306 | /** Used to check objects for own properties. */
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307 | var hasOwnProperty = objectProto.hasOwnProperty;
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308 |
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309 | /**
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310 | * Used to resolve the
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311 | * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
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312 | * of values.
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313 | */
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314 | var objectToString = objectProto.toString;
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315 |
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316 | /** Used to detect if a method is native. */
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317 | var reIsNative = RegExp('^' +
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318 | funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
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319 | .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
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320 | );
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321 |
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322 | /** Built-in value references. */
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323 | var Buffer = moduleExports ? root.Buffer : undefined,
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324 | Symbol = root.Symbol,
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325 | Uint8Array = root.Uint8Array,
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326 | getPrototype = overArg(Object.getPrototypeOf, Object),
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327 | objectCreate = Object.create,
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328 | propertyIsEnumerable = objectProto.propertyIsEnumerable,
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329 | splice = arrayProto.splice;
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330 |
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331 | /* Built-in method references for those with the same name as other `lodash` methods. */
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332 | var nativeGetSymbols = Object.getOwnPropertySymbols,
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333 | nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,
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334 | nativeKeys = overArg(Object.keys, Object);
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335 |
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336 | /* Built-in method references that are verified to be native. */
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337 | var DataView = getNative(root, 'DataView'),
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338 | Map = getNative(root, 'Map'),
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339 | Promise = getNative(root, 'Promise'),
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340 | Set = getNative(root, 'Set'),
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341 | WeakMap = getNative(root, 'WeakMap'),
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342 | nativeCreate = getNative(Object, 'create');
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343 |
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344 | /** Used to detect maps, sets, and weakmaps. */
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345 | var dataViewCtorString = toSource(DataView),
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346 | mapCtorString = toSource(Map),
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347 | promiseCtorString = toSource(Promise),
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348 | setCtorString = toSource(Set),
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349 | weakMapCtorString = toSource(WeakMap);
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350 |
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351 | /** Used to convert symbols to primitives and strings. */
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352 | var symbolProto = Symbol ? Symbol.prototype : undefined,
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353 | symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;
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354 |
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355 | /**
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356 | * Creates a hash object.
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357 | *
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358 | * @private
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359 | * @constructor
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360 | * @param {Array} [entries] The key-value pairs to cache.
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361 | */
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362 | function Hash(entries) {
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363 | var index = -1,
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364 | length = entries ? entries.length : 0;
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365 |
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366 | this.clear();
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367 | while (++index < length) {
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368 | var entry = entries[index];
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369 | this.set(entry[0], entry[1]);
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370 | }
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371 | }
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372 |
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373 | /**
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374 | * Removes all key-value entries from the hash.
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375 | *
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376 | * @private
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377 | * @name clear
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378 | * @memberOf Hash
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379 | */
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380 | function hashClear() {
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381 | this.__data__ = nativeCreate ? nativeCreate(null) : {};
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382 | }
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383 |
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384 | /**
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385 | * Removes `key` and its value from the hash.
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386 | *
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387 | * @private
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388 | * @name delete
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389 | * @memberOf Hash
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390 | * @param {Object} hash The hash to modify.
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391 | * @param {string} key The key of the value to remove.
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392 | * @returns {boolean} Returns `true` if the entry was removed, else `false`.
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393 | */
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394 | function hashDelete(key) {
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395 | return this.has(key) && delete this.__data__[key];
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396 | }
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397 |
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398 | /**
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399 | * Gets the hash value for `key`.
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400 | *
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401 | * @private
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402 | * @name get
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403 | * @memberOf Hash
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404 | * @param {string} key The key of the value to get.
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405 | * @returns {*} Returns the entry value.
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406 | */
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407 | function hashGet(key) {
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408 | var data = this.__data__;
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409 | if (nativeCreate) {
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410 | var result = data[key];
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411 | return result === HASH_UNDEFINED ? undefined : result;
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412 | }
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413 | return hasOwnProperty.call(data, key) ? data[key] : undefined;
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414 | }
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415 |
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416 | /**
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417 | * Checks if a hash value for `key` exists.
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418 | *
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419 | * @private
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420 | * @name has
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421 | * @memberOf Hash
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422 | * @param {string} key The key of the entry to check.
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423 | * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
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424 | */
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425 | function hashHas(key) {
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426 | var data = this.__data__;
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427 | return nativeCreate ? data[key] !== undefined : hasOwnProperty.call(data, key);
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428 | }
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429 |
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430 | /**
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431 | * Sets the hash `key` to `value`.
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432 | *
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433 | * @private
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434 | * @name set
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435 | * @memberOf Hash
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436 | * @param {string} key The key of the value to set.
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437 | * @param {*} value The value to set.
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438 | * @returns {Object} Returns the hash instance.
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439 | */
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440 | function hashSet(key, value) {
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441 | var data = this.__data__;
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442 | data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
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443 | return this;
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444 | }
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445 |
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446 | // Add methods to `Hash`.
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447 | Hash.prototype.clear = hashClear;
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448 | Hash.prototype['delete'] = hashDelete;
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449 | Hash.prototype.get = hashGet;
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450 | Hash.prototype.has = hashHas;
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451 | Hash.prototype.set = hashSet;
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452 |
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453 | /**
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454 | * Creates an list cache object.
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455 | *
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456 | * @private
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457 | * @constructor
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458 | * @param {Array} [entries] The key-value pairs to cache.
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459 | */
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460 | function ListCache(entries) {
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461 | var index = -1,
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462 | length = entries ? entries.length : 0;
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463 |
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464 | this.clear();
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465 | while (++index < length) {
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466 | var entry = entries[index];
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467 | this.set(entry[0], entry[1]);
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468 | }
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469 | }
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470 |
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471 | /**
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472 | * Removes all key-value entries from the list cache.
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473 | *
|
474 | * @private
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475 | * @name clear
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476 | * @memberOf ListCache
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477 | */
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478 | function listCacheClear() {
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479 | this.__data__ = [];
|
480 | }
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481 |
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482 | /**
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483 | * Removes `key` and its value from the list cache.
|
484 | *
|
485 | * @private
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486 | * @name delete
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487 | * @memberOf ListCache
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488 | * @param {string} key The key of the value to remove.
|
489 | * @returns {boolean} Returns `true` if the entry was removed, else `false`.
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490 | */
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491 | function listCacheDelete(key) {
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492 | var data = this.__data__,
|
493 | index = assocIndexOf(data, key);
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494 |
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495 | if (index < 0) {
|
496 | return false;
|
497 | }
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498 | var lastIndex = data.length - 1;
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499 | if (index == lastIndex) {
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500 | data.pop();
|
501 | } else {
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502 | splice.call(data, index, 1);
|
503 | }
|
504 | return true;
|
505 | }
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506 |
|
507 | /**
|
508 | * Gets the list cache value for `key`.
|
509 | *
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510 | * @private
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511 | * @name get
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512 | * @memberOf ListCache
|
513 | * @param {string} key The key of the value to get.
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514 | * @returns {*} Returns the entry value.
|
515 | */
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516 | function listCacheGet(key) {
|
517 | var data = this.__data__,
|
518 | index = assocIndexOf(data, key);
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519 |
|
520 | return index < 0 ? undefined : data[index][1];
|
521 | }
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522 |
|
523 | /**
|
524 | * Checks if a list cache value for `key` exists.
|
525 | *
|
526 | * @private
|
527 | * @name has
|
528 | * @memberOf ListCache
|
529 | * @param {string} key The key of the entry to check.
|
530 | * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
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531 | */
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532 | function listCacheHas(key) {
|
533 | return assocIndexOf(this.__data__, key) > -1;
|
534 | }
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535 |
|
536 | /**
|
537 | * Sets the list cache `key` to `value`.
|
538 | *
|
539 | * @private
|
540 | * @name set
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541 | * @memberOf ListCache
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542 | * @param {string} key The key of the value to set.
|
543 | * @param {*} value The value to set.
|
544 | * @returns {Object} Returns the list cache instance.
|
545 | */
|
546 | function listCacheSet(key, value) {
|
547 | var data = this.__data__,
|
548 | index = assocIndexOf(data, key);
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549 |
|
550 | if (index < 0) {
|
551 | data.push([key, value]);
|
552 | } else {
|
553 | data[index][1] = value;
|
554 | }
|
555 | return this;
|
556 | }
|
557 |
|
558 | // Add methods to `ListCache`.
|
559 | ListCache.prototype.clear = listCacheClear;
|
560 | ListCache.prototype['delete'] = listCacheDelete;
|
561 | ListCache.prototype.get = listCacheGet;
|
562 | ListCache.prototype.has = listCacheHas;
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563 | ListCache.prototype.set = listCacheSet;
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564 |
|
565 | /**
|
566 | * Creates a map cache object to store key-value pairs.
|
567 | *
|
568 | * @private
|
569 | * @constructor
|
570 | * @param {Array} [entries] The key-value pairs to cache.
|
571 | */
|
572 | function MapCache(entries) {
|
573 | var index = -1,
|
574 | length = entries ? entries.length : 0;
|
575 |
|
576 | this.clear();
|
577 | while (++index < length) {
|
578 | var entry = entries[index];
|
579 | this.set(entry[0], entry[1]);
|
580 | }
|
581 | }
|
582 |
|
583 | /**
|
584 | * Removes all key-value entries from the map.
|
585 | *
|
586 | * @private
|
587 | * @name clear
|
588 | * @memberOf MapCache
|
589 | */
|
590 | function mapCacheClear() {
|
591 | this.__data__ = {
|
592 | 'hash': new Hash,
|
593 | 'map': new (Map || ListCache),
|
594 | 'string': new Hash
|
595 | };
|
596 | }
|
597 |
|
598 | /**
|
599 | * Removes `key` and its value from the map.
|
600 | *
|
601 | * @private
|
602 | * @name delete
|
603 | * @memberOf MapCache
|
604 | * @param {string} key The key of the value to remove.
|
605 | * @returns {boolean} Returns `true` if the entry was removed, else `false`.
|
606 | */
|
607 | function mapCacheDelete(key) {
|
608 | return getMapData(this, key)['delete'](key);
|
609 | }
|
610 |
|
611 | /**
|
612 | * Gets the map value for `key`.
|
613 | *
|
614 | * @private
|
615 | * @name get
|
616 | * @memberOf MapCache
|
617 | * @param {string} key The key of the value to get.
|
618 | * @returns {*} Returns the entry value.
|
619 | */
|
620 | function mapCacheGet(key) {
|
621 | return getMapData(this, key).get(key);
|
622 | }
|
623 |
|
624 | /**
|
625 | * Checks if a map value for `key` exists.
|
626 | *
|
627 | * @private
|
628 | * @name has
|
629 | * @memberOf MapCache
|
630 | * @param {string} key The key of the entry to check.
|
631 | * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
|
632 | */
|
633 | function mapCacheHas(key) {
|
634 | return getMapData(this, key).has(key);
|
635 | }
|
636 |
|
637 | /**
|
638 | * Sets the map `key` to `value`.
|
639 | *
|
640 | * @private
|
641 | * @name set
|
642 | * @memberOf MapCache
|
643 | * @param {string} key The key of the value to set.
|
644 | * @param {*} value The value to set.
|
645 | * @returns {Object} Returns the map cache instance.
|
646 | */
|
647 | function mapCacheSet(key, value) {
|
648 | getMapData(this, key).set(key, value);
|
649 | return this;
|
650 | }
|
651 |
|
652 | // Add methods to `MapCache`.
|
653 | MapCache.prototype.clear = mapCacheClear;
|
654 | MapCache.prototype['delete'] = mapCacheDelete;
|
655 | MapCache.prototype.get = mapCacheGet;
|
656 | MapCache.prototype.has = mapCacheHas;
|
657 | MapCache.prototype.set = mapCacheSet;
|
658 |
|
659 | /**
|
660 | * Creates a stack cache object to store key-value pairs.
|
661 | *
|
662 | * @private
|
663 | * @constructor
|
664 | * @param {Array} [entries] The key-value pairs to cache.
|
665 | */
|
666 | function Stack(entries) {
|
667 | this.__data__ = new ListCache(entries);
|
668 | }
|
669 |
|
670 | /**
|
671 | * Removes all key-value entries from the stack.
|
672 | *
|
673 | * @private
|
674 | * @name clear
|
675 | * @memberOf Stack
|
676 | */
|
677 | function stackClear() {
|
678 | this.__data__ = new ListCache;
|
679 | }
|
680 |
|
681 | /**
|
682 | * Removes `key` and its value from the stack.
|
683 | *
|
684 | * @private
|
685 | * @name delete
|
686 | * @memberOf Stack
|
687 | * @param {string} key The key of the value to remove.
|
688 | * @returns {boolean} Returns `true` if the entry was removed, else `false`.
|
689 | */
|
690 | function stackDelete(key) {
|
691 | return this.__data__['delete'](key);
|
692 | }
|
693 |
|
694 | /**
|
695 | * Gets the stack value for `key`.
|
696 | *
|
697 | * @private
|
698 | * @name get
|
699 | * @memberOf Stack
|
700 | * @param {string} key The key of the value to get.
|
701 | * @returns {*} Returns the entry value.
|
702 | */
|
703 | function stackGet(key) {
|
704 | return this.__data__.get(key);
|
705 | }
|
706 |
|
707 | /**
|
708 | * Checks if a stack value for `key` exists.
|
709 | *
|
710 | * @private
|
711 | * @name has
|
712 | * @memberOf Stack
|
713 | * @param {string} key The key of the entry to check.
|
714 | * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
|
715 | */
|
716 | function stackHas(key) {
|
717 | return this.__data__.has(key);
|
718 | }
|
719 |
|
720 | /**
|
721 | * Sets the stack `key` to `value`.
|
722 | *
|
723 | * @private
|
724 | * @name set
|
725 | * @memberOf Stack
|
726 | * @param {string} key The key of the value to set.
|
727 | * @param {*} value The value to set.
|
728 | * @returns {Object} Returns the stack cache instance.
|
729 | */
|
730 | function stackSet(key, value) {
|
731 | var cache = this.__data__;
|
732 | if (cache instanceof ListCache) {
|
733 | var pairs = cache.__data__;
|
734 | if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
|
735 | pairs.push([key, value]);
|
736 | return this;
|
737 | }
|
738 | cache = this.__data__ = new MapCache(pairs);
|
739 | }
|
740 | cache.set(key, value);
|
741 | return this;
|
742 | }
|
743 |
|
744 | // Add methods to `Stack`.
|
745 | Stack.prototype.clear = stackClear;
|
746 | Stack.prototype['delete'] = stackDelete;
|
747 | Stack.prototype.get = stackGet;
|
748 | Stack.prototype.has = stackHas;
|
749 | Stack.prototype.set = stackSet;
|
750 |
|
751 | /**
|
752 | * Creates an array of the enumerable property names of the array-like `value`.
|
753 | *
|
754 | * @private
|
755 | * @param {*} value The value to query.
|
756 | * @param {boolean} inherited Specify returning inherited property names.
|
757 | * @returns {Array} Returns the array of property names.
|
758 | */
|
759 | function arrayLikeKeys(value, inherited) {
|
760 | // Safari 8.1 makes `arguments.callee` enumerable in strict mode.
|
761 | // Safari 9 makes `arguments.length` enumerable in strict mode.
|
762 | var result = (isArray(value) || isArguments(value))
|
763 | ? baseTimes(value.length, String)
|
764 | : [];
|
765 |
|
766 | var length = result.length,
|
767 | skipIndexes = !!length;
|
768 |
|
769 | for (var key in value) {
|
770 | if ((inherited || hasOwnProperty.call(value, key)) &&
|
771 | !(skipIndexes && (key == 'length' || isIndex(key, length)))) {
|
772 | result.push(key);
|
773 | }
|
774 | }
|
775 | return result;
|
776 | }
|
777 |
|
778 | /**
|
779 | * Assigns `value` to `key` of `object` if the existing value is not equivalent
|
780 | * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
|
781 | * for equality comparisons.
|
782 | *
|
783 | * @private
|
784 | * @param {Object} object The object to modify.
|
785 | * @param {string} key The key of the property to assign.
|
786 | * @param {*} value The value to assign.
|
787 | */
|
788 | function assignValue(object, key, value) {
|
789 | var objValue = object[key];
|
790 | if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
|
791 | (value === undefined && !(key in object))) {
|
792 | object[key] = value;
|
793 | }
|
794 | }
|
795 |
|
796 | /**
|
797 | * Gets the index at which the `key` is found in `array` of key-value pairs.
|
798 | *
|
799 | * @private
|
800 | * @param {Array} array The array to inspect.
|
801 | * @param {*} key The key to search for.
|
802 | * @returns {number} Returns the index of the matched value, else `-1`.
|
803 | */
|
804 | function assocIndexOf(array, key) {
|
805 | var length = array.length;
|
806 | while (length--) {
|
807 | if (eq(array[length][0], key)) {
|
808 | return length;
|
809 | }
|
810 | }
|
811 | return -1;
|
812 | }
|
813 |
|
814 | /**
|
815 | * The base implementation of `_.assign` without support for multiple sources
|
816 | * or `customizer` functions.
|
817 | *
|
818 | * @private
|
819 | * @param {Object} object The destination object.
|
820 | * @param {Object} source The source object.
|
821 | * @returns {Object} Returns `object`.
|
822 | */
|
823 | function baseAssign(object, source) {
|
824 | return object && copyObject(source, keys(source), object);
|
825 | }
|
826 |
|
827 | /**
|
828 | * The base implementation of `_.clone` and `_.cloneDeep` which tracks
|
829 | * traversed objects.
|
830 | *
|
831 | * @private
|
832 | * @param {*} value The value to clone.
|
833 | * @param {boolean} [isDeep] Specify a deep clone.
|
834 | * @param {boolean} [isFull] Specify a clone including symbols.
|
835 | * @param {Function} [customizer] The function to customize cloning.
|
836 | * @param {string} [key] The key of `value`.
|
837 | * @param {Object} [object] The parent object of `value`.
|
838 | * @param {Object} [stack] Tracks traversed objects and their clone counterparts.
|
839 | * @returns {*} Returns the cloned value.
|
840 | */
|
841 | function baseClone(value, isDeep, isFull, customizer, key, object, stack) {
|
842 | var result;
|
843 | if (customizer) {
|
844 | result = object ? customizer(value, key, object, stack) : customizer(value);
|
845 | }
|
846 | if (result !== undefined) {
|
847 | return result;
|
848 | }
|
849 | if (!isObject(value)) {
|
850 | return value;
|
851 | }
|
852 | var isArr = isArray(value);
|
853 | if (isArr) {
|
854 | result = initCloneArray(value);
|
855 | if (!isDeep) {
|
856 | return copyArray(value, result);
|
857 | }
|
858 | } else {
|
859 | var tag = getTag(value),
|
860 | isFunc = tag == funcTag || tag == genTag;
|
861 |
|
862 | if (isBuffer(value)) {
|
863 | return cloneBuffer(value, isDeep);
|
864 | }
|
865 | if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
|
866 | if (isHostObject(value)) {
|
867 | return object ? value : {};
|
868 | }
|
869 | result = initCloneObject(isFunc ? {} : value);
|
870 | if (!isDeep) {
|
871 | return copySymbols(value, baseAssign(result, value));
|
872 | }
|
873 | } else {
|
874 | if (!cloneableTags[tag]) {
|
875 | return object ? value : {};
|
876 | }
|
877 | result = initCloneByTag(value, tag, baseClone, isDeep);
|
878 | }
|
879 | }
|
880 | // Check for circular references and return its corresponding clone.
|
881 | stack || (stack = new Stack);
|
882 | var stacked = stack.get(value);
|
883 | if (stacked) {
|
884 | return stacked;
|
885 | }
|
886 | stack.set(value, result);
|
887 |
|
888 | if (!isArr) {
|
889 | var props = isFull ? getAllKeys(value) : keys(value);
|
890 | }
|
891 | arrayEach(props || value, function(subValue, key) {
|
892 | if (props) {
|
893 | key = subValue;
|
894 | subValue = value[key];
|
895 | }
|
896 | // Recursively populate clone (susceptible to call stack limits).
|
897 | assignValue(result, key, baseClone(subValue, isDeep, isFull, customizer, key, value, stack));
|
898 | });
|
899 | return result;
|
900 | }
|
901 |
|
902 | /**
|
903 | * The base implementation of `_.create` without support for assigning
|
904 | * properties to the created object.
|
905 | *
|
906 | * @private
|
907 | * @param {Object} prototype The object to inherit from.
|
908 | * @returns {Object} Returns the new object.
|
909 | */
|
910 | function baseCreate(proto) {
|
911 | return isObject(proto) ? objectCreate(proto) : {};
|
912 | }
|
913 |
|
914 | /**
|
915 | * The base implementation of `getAllKeys` and `getAllKeysIn` which uses
|
916 | * `keysFunc` and `symbolsFunc` to get the enumerable property names and
|
917 | * symbols of `object`.
|
918 | *
|
919 | * @private
|
920 | * @param {Object} object The object to query.
|
921 | * @param {Function} keysFunc The function to get the keys of `object`.
|
922 | * @param {Function} symbolsFunc The function to get the symbols of `object`.
|
923 | * @returns {Array} Returns the array of property names and symbols.
|
924 | */
|
925 | function baseGetAllKeys(object, keysFunc, symbolsFunc) {
|
926 | var result = keysFunc(object);
|
927 | return isArray(object) ? result : arrayPush(result, symbolsFunc(object));
|
928 | }
|
929 |
|
930 | /**
|
931 | * The base implementation of `getTag`.
|
932 | *
|
933 | * @private
|
934 | * @param {*} value The value to query.
|
935 | * @returns {string} Returns the `toStringTag`.
|
936 | */
|
937 | function baseGetTag(value) {
|
938 | return objectToString.call(value);
|
939 | }
|
940 |
|
941 | /**
|
942 | * The base implementation of `_.isNative` without bad shim checks.
|
943 | *
|
944 | * @private
|
945 | * @param {*} value The value to check.
|
946 | * @returns {boolean} Returns `true` if `value` is a native function,
|
947 | * else `false`.
|
948 | */
|
949 | function baseIsNative(value) {
|
950 | if (!isObject(value) || isMasked(value)) {
|
951 | return false;
|
952 | }
|
953 | var pattern = (isFunction(value) || isHostObject(value)) ? reIsNative : reIsHostCtor;
|
954 | return pattern.test(toSource(value));
|
955 | }
|
956 |
|
957 | /**
|
958 | * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
|
959 | *
|
960 | * @private
|
961 | * @param {Object} object The object to query.
|
962 | * @returns {Array} Returns the array of property names.
|
963 | */
|
964 | function baseKeys(object) {
|
965 | if (!isPrototype(object)) {
|
966 | return nativeKeys(object);
|
967 | }
|
968 | var result = [];
|
969 | for (var key in Object(object)) {
|
970 | if (hasOwnProperty.call(object, key) && key != 'constructor') {
|
971 | result.push(key);
|
972 | }
|
973 | }
|
974 | return result;
|
975 | }
|
976 |
|
977 | /**
|
978 | * Creates a clone of `buffer`.
|
979 | *
|
980 | * @private
|
981 | * @param {Buffer} buffer The buffer to clone.
|
982 | * @param {boolean} [isDeep] Specify a deep clone.
|
983 | * @returns {Buffer} Returns the cloned buffer.
|
984 | */
|
985 | function cloneBuffer(buffer, isDeep) {
|
986 | if (isDeep) {
|
987 | return buffer.slice();
|
988 | }
|
989 | var result = new buffer.constructor(buffer.length);
|
990 | buffer.copy(result);
|
991 | return result;
|
992 | }
|
993 |
|
994 | /**
|
995 | * Creates a clone of `arrayBuffer`.
|
996 | *
|
997 | * @private
|
998 | * @param {ArrayBuffer} arrayBuffer The array buffer to clone.
|
999 | * @returns {ArrayBuffer} Returns the cloned array buffer.
|
1000 | */
|
1001 | function cloneArrayBuffer(arrayBuffer) {
|
1002 | var result = new arrayBuffer.constructor(arrayBuffer.byteLength);
|
1003 | new Uint8Array(result).set(new Uint8Array(arrayBuffer));
|
1004 | return result;
|
1005 | }
|
1006 |
|
1007 | /**
|
1008 | * Creates a clone of `dataView`.
|
1009 | *
|
1010 | * @private
|
1011 | * @param {Object} dataView The data view to clone.
|
1012 | * @param {boolean} [isDeep] Specify a deep clone.
|
1013 | * @returns {Object} Returns the cloned data view.
|
1014 | */
|
1015 | function cloneDataView(dataView, isDeep) {
|
1016 | var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;
|
1017 | return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);
|
1018 | }
|
1019 |
|
1020 | /**
|
1021 | * Creates a clone of `map`.
|
1022 | *
|
1023 | * @private
|
1024 | * @param {Object} map The map to clone.
|
1025 | * @param {Function} cloneFunc The function to clone values.
|
1026 | * @param {boolean} [isDeep] Specify a deep clone.
|
1027 | * @returns {Object} Returns the cloned map.
|
1028 | */
|
1029 | function cloneMap(map, isDeep, cloneFunc) {
|
1030 | var array = isDeep ? cloneFunc(mapToArray(map), true) : mapToArray(map);
|
1031 | return arrayReduce(array, addMapEntry, new map.constructor);
|
1032 | }
|
1033 |
|
1034 | /**
|
1035 | * Creates a clone of `regexp`.
|
1036 | *
|
1037 | * @private
|
1038 | * @param {Object} regexp The regexp to clone.
|
1039 | * @returns {Object} Returns the cloned regexp.
|
1040 | */
|
1041 | function cloneRegExp(regexp) {
|
1042 | var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));
|
1043 | result.lastIndex = regexp.lastIndex;
|
1044 | return result;
|
1045 | }
|
1046 |
|
1047 | /**
|
1048 | * Creates a clone of `set`.
|
1049 | *
|
1050 | * @private
|
1051 | * @param {Object} set The set to clone.
|
1052 | * @param {Function} cloneFunc The function to clone values.
|
1053 | * @param {boolean} [isDeep] Specify a deep clone.
|
1054 | * @returns {Object} Returns the cloned set.
|
1055 | */
|
1056 | function cloneSet(set, isDeep, cloneFunc) {
|
1057 | var array = isDeep ? cloneFunc(setToArray(set), true) : setToArray(set);
|
1058 | return arrayReduce(array, addSetEntry, new set.constructor);
|
1059 | }
|
1060 |
|
1061 | /**
|
1062 | * Creates a clone of the `symbol` object.
|
1063 | *
|
1064 | * @private
|
1065 | * @param {Object} symbol The symbol object to clone.
|
1066 | * @returns {Object} Returns the cloned symbol object.
|
1067 | */
|
1068 | function cloneSymbol(symbol) {
|
1069 | return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};
|
1070 | }
|
1071 |
|
1072 | /**
|
1073 | * Creates a clone of `typedArray`.
|
1074 | *
|
1075 | * @private
|
1076 | * @param {Object} typedArray The typed array to clone.
|
1077 | * @param {boolean} [isDeep] Specify a deep clone.
|
1078 | * @returns {Object} Returns the cloned typed array.
|
1079 | */
|
1080 | function cloneTypedArray(typedArray, isDeep) {
|
1081 | var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;
|
1082 | return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);
|
1083 | }
|
1084 |
|
1085 | /**
|
1086 | * Copies the values of `source` to `array`.
|
1087 | *
|
1088 | * @private
|
1089 | * @param {Array} source The array to copy values from.
|
1090 | * @param {Array} [array=[]] The array to copy values to.
|
1091 | * @returns {Array} Returns `array`.
|
1092 | */
|
1093 | function copyArray(source, array) {
|
1094 | var index = -1,
|
1095 | length = source.length;
|
1096 |
|
1097 | array || (array = Array(length));
|
1098 | while (++index < length) {
|
1099 | array[index] = source[index];
|
1100 | }
|
1101 | return array;
|
1102 | }
|
1103 |
|
1104 | /**
|
1105 | * Copies properties of `source` to `object`.
|
1106 | *
|
1107 | * @private
|
1108 | * @param {Object} source The object to copy properties from.
|
1109 | * @param {Array} props The property identifiers to copy.
|
1110 | * @param {Object} [object={}] The object to copy properties to.
|
1111 | * @param {Function} [customizer] The function to customize copied values.
|
1112 | * @returns {Object} Returns `object`.
|
1113 | */
|
1114 | function copyObject(source, props, object, customizer) {
|
1115 | object || (object = {});
|
1116 |
|
1117 | var index = -1,
|
1118 | length = props.length;
|
1119 |
|
1120 | while (++index < length) {
|
1121 | var key = props[index];
|
1122 |
|
1123 | var newValue = customizer
|
1124 | ? customizer(object[key], source[key], key, object, source)
|
1125 | : undefined;
|
1126 |
|
1127 | assignValue(object, key, newValue === undefined ? source[key] : newValue);
|
1128 | }
|
1129 | return object;
|
1130 | }
|
1131 |
|
1132 | /**
|
1133 | * Copies own symbol properties of `source` to `object`.
|
1134 | *
|
1135 | * @private
|
1136 | * @param {Object} source The object to copy symbols from.
|
1137 | * @param {Object} [object={}] The object to copy symbols to.
|
1138 | * @returns {Object} Returns `object`.
|
1139 | */
|
1140 | function copySymbols(source, object) {
|
1141 | return copyObject(source, getSymbols(source), object);
|
1142 | }
|
1143 |
|
1144 | /**
|
1145 | * Creates an array of own enumerable property names and symbols of `object`.
|
1146 | *
|
1147 | * @private
|
1148 | * @param {Object} object The object to query.
|
1149 | * @returns {Array} Returns the array of property names and symbols.
|
1150 | */
|
1151 | function getAllKeys(object) {
|
1152 | return baseGetAllKeys(object, keys, getSymbols);
|
1153 | }
|
1154 |
|
1155 | /**
|
1156 | * Gets the data for `map`.
|
1157 | *
|
1158 | * @private
|
1159 | * @param {Object} map The map to query.
|
1160 | * @param {string} key The reference key.
|
1161 | * @returns {*} Returns the map data.
|
1162 | */
|
1163 | function getMapData(map, key) {
|
1164 | var data = map.__data__;
|
1165 | return isKeyable(key)
|
1166 | ? data[typeof key == 'string' ? 'string' : 'hash']
|
1167 | : data.map;
|
1168 | }
|
1169 |
|
1170 | /**
|
1171 | * Gets the native function at `key` of `object`.
|
1172 | *
|
1173 | * @private
|
1174 | * @param {Object} object The object to query.
|
1175 | * @param {string} key The key of the method to get.
|
1176 | * @returns {*} Returns the function if it's native, else `undefined`.
|
1177 | */
|
1178 | function getNative(object, key) {
|
1179 | var value = getValue(object, key);
|
1180 | return baseIsNative(value) ? value : undefined;
|
1181 | }
|
1182 |
|
1183 | /**
|
1184 | * Creates an array of the own enumerable symbol properties of `object`.
|
1185 | *
|
1186 | * @private
|
1187 | * @param {Object} object The object to query.
|
1188 | * @returns {Array} Returns the array of symbols.
|
1189 | */
|
1190 | var getSymbols = nativeGetSymbols ? overArg(nativeGetSymbols, Object) : stubArray;
|
1191 |
|
1192 | /**
|
1193 | * Gets the `toStringTag` of `value`.
|
1194 | *
|
1195 | * @private
|
1196 | * @param {*} value The value to query.
|
1197 | * @returns {string} Returns the `toStringTag`.
|
1198 | */
|
1199 | var getTag = baseGetTag;
|
1200 |
|
1201 | // Fallback for data views, maps, sets, and weak maps in IE 11,
|
1202 | // for data views in Edge < 14, and promises in Node.js.
|
1203 | if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
|
1204 | (Map && getTag(new Map) != mapTag) ||
|
1205 | (Promise && getTag(Promise.resolve()) != promiseTag) ||
|
1206 | (Set && getTag(new Set) != setTag) ||
|
1207 | (WeakMap && getTag(new WeakMap) != weakMapTag)) {
|
1208 | getTag = function(value) {
|
1209 | var result = objectToString.call(value),
|
1210 | Ctor = result == objectTag ? value.constructor : undefined,
|
1211 | ctorString = Ctor ? toSource(Ctor) : undefined;
|
1212 |
|
1213 | if (ctorString) {
|
1214 | switch (ctorString) {
|
1215 | case dataViewCtorString: return dataViewTag;
|
1216 | case mapCtorString: return mapTag;
|
1217 | case promiseCtorString: return promiseTag;
|
1218 | case setCtorString: return setTag;
|
1219 | case weakMapCtorString: return weakMapTag;
|
1220 | }
|
1221 | }
|
1222 | return result;
|
1223 | };
|
1224 | }
|
1225 |
|
1226 | /**
|
1227 | * Initializes an array clone.
|
1228 | *
|
1229 | * @private
|
1230 | * @param {Array} array The array to clone.
|
1231 | * @returns {Array} Returns the initialized clone.
|
1232 | */
|
1233 | function initCloneArray(array) {
|
1234 | var length = array.length,
|
1235 | result = array.constructor(length);
|
1236 |
|
1237 | // Add properties assigned by `RegExp#exec`.
|
1238 | if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
|
1239 | result.index = array.index;
|
1240 | result.input = array.input;
|
1241 | }
|
1242 | return result;
|
1243 | }
|
1244 |
|
1245 | /**
|
1246 | * Initializes an object clone.
|
1247 | *
|
1248 | * @private
|
1249 | * @param {Object} object The object to clone.
|
1250 | * @returns {Object} Returns the initialized clone.
|
1251 | */
|
1252 | function initCloneObject(object) {
|
1253 | return (typeof object.constructor == 'function' && !isPrototype(object))
|
1254 | ? baseCreate(getPrototype(object))
|
1255 | : {};
|
1256 | }
|
1257 |
|
1258 | /**
|
1259 | * Initializes an object clone based on its `toStringTag`.
|
1260 | *
|
1261 | * **Note:** This function only supports cloning values with tags of
|
1262 | * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
|
1263 | *
|
1264 | * @private
|
1265 | * @param {Object} object The object to clone.
|
1266 | * @param {string} tag The `toStringTag` of the object to clone.
|
1267 | * @param {Function} cloneFunc The function to clone values.
|
1268 | * @param {boolean} [isDeep] Specify a deep clone.
|
1269 | * @returns {Object} Returns the initialized clone.
|
1270 | */
|
1271 | function initCloneByTag(object, tag, cloneFunc, isDeep) {
|
1272 | var Ctor = object.constructor;
|
1273 | switch (tag) {
|
1274 | case arrayBufferTag:
|
1275 | return cloneArrayBuffer(object);
|
1276 |
|
1277 | case boolTag:
|
1278 | case dateTag:
|
1279 | return new Ctor(+object);
|
1280 |
|
1281 | case dataViewTag:
|
1282 | return cloneDataView(object, isDeep);
|
1283 |
|
1284 | case float32Tag: case float64Tag:
|
1285 | case int8Tag: case int16Tag: case int32Tag:
|
1286 | case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
|
1287 | return cloneTypedArray(object, isDeep);
|
1288 |
|
1289 | case mapTag:
|
1290 | return cloneMap(object, isDeep, cloneFunc);
|
1291 |
|
1292 | case numberTag:
|
1293 | case stringTag:
|
1294 | return new Ctor(object);
|
1295 |
|
1296 | case regexpTag:
|
1297 | return cloneRegExp(object);
|
1298 |
|
1299 | case setTag:
|
1300 | return cloneSet(object, isDeep, cloneFunc);
|
1301 |
|
1302 | case symbolTag:
|
1303 | return cloneSymbol(object);
|
1304 | }
|
1305 | }
|
1306 |
|
1307 | /**
|
1308 | * Checks if `value` is a valid array-like index.
|
1309 | *
|
1310 | * @private
|
1311 | * @param {*} value The value to check.
|
1312 | * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
|
1313 | * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
|
1314 | */
|
1315 | function isIndex(value, length) {
|
1316 | length = length == null ? MAX_SAFE_INTEGER : length;
|
1317 | return !!length &&
|
1318 | (typeof value == 'number' || reIsUint.test(value)) &&
|
1319 | (value > -1 && value % 1 == 0 && value < length);
|
1320 | }
|
1321 |
|
1322 | /**
|
1323 | * Checks if `value` is suitable for use as unique object key.
|
1324 | *
|
1325 | * @private
|
1326 | * @param {*} value The value to check.
|
1327 | * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
|
1328 | */
|
1329 | function isKeyable(value) {
|
1330 | var type = typeof value;
|
1331 | return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
|
1332 | ? (value !== '__proto__')
|
1333 | : (value === null);
|
1334 | }
|
1335 |
|
1336 | /**
|
1337 | * Checks if `func` has its source masked.
|
1338 | *
|
1339 | * @private
|
1340 | * @param {Function} func The function to check.
|
1341 | * @returns {boolean} Returns `true` if `func` is masked, else `false`.
|
1342 | */
|
1343 | function isMasked(func) {
|
1344 | return !!maskSrcKey && (maskSrcKey in func);
|
1345 | }
|
1346 |
|
1347 | /**
|
1348 | * Checks if `value` is likely a prototype object.
|
1349 | *
|
1350 | * @private
|
1351 | * @param {*} value The value to check.
|
1352 | * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
|
1353 | */
|
1354 | function isPrototype(value) {
|
1355 | var Ctor = value && value.constructor,
|
1356 | proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;
|
1357 |
|
1358 | return value === proto;
|
1359 | }
|
1360 |
|
1361 | /**
|
1362 | * Converts `func` to its source code.
|
1363 | *
|
1364 | * @private
|
1365 | * @param {Function} func The function to process.
|
1366 | * @returns {string} Returns the source code.
|
1367 | */
|
1368 | function toSource(func) {
|
1369 | if (func != null) {
|
1370 | try {
|
1371 | return funcToString.call(func);
|
1372 | } catch (e) {}
|
1373 | try {
|
1374 | return (func + '');
|
1375 | } catch (e) {}
|
1376 | }
|
1377 | return '';
|
1378 | }
|
1379 |
|
1380 | /**
|
1381 | * This method is like `_.clone` except that it recursively clones `value`.
|
1382 | *
|
1383 | * @static
|
1384 | * @memberOf _
|
1385 | * @since 1.0.0
|
1386 | * @category Lang
|
1387 | * @param {*} value The value to recursively clone.
|
1388 | * @returns {*} Returns the deep cloned value.
|
1389 | * @see _.clone
|
1390 | * @example
|
1391 | *
|
1392 | * var objects = [{ 'a': 1 }, { 'b': 2 }];
|
1393 | *
|
1394 | * var deep = _.cloneDeep(objects);
|
1395 | * console.log(deep[0] === objects[0]);
|
1396 | * // => false
|
1397 | */
|
1398 | function cloneDeep(value) {
|
1399 | return baseClone(value, true, true);
|
1400 | }
|
1401 |
|
1402 | /**
|
1403 | * Performs a
|
1404 | * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
|
1405 | * comparison between two values to determine if they are equivalent.
|
1406 | *
|
1407 | * @static
|
1408 | * @memberOf _
|
1409 | * @since 4.0.0
|
1410 | * @category Lang
|
1411 | * @param {*} value The value to compare.
|
1412 | * @param {*} other The other value to compare.
|
1413 | * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
|
1414 | * @example
|
1415 | *
|
1416 | * var object = { 'a': 1 };
|
1417 | * var other = { 'a': 1 };
|
1418 | *
|
1419 | * _.eq(object, object);
|
1420 | * // => true
|
1421 | *
|
1422 | * _.eq(object, other);
|
1423 | * // => false
|
1424 | *
|
1425 | * _.eq('a', 'a');
|
1426 | * // => true
|
1427 | *
|
1428 | * _.eq('a', Object('a'));
|
1429 | * // => false
|
1430 | *
|
1431 | * _.eq(NaN, NaN);
|
1432 | * // => true
|
1433 | */
|
1434 | function eq(value, other) {
|
1435 | return value === other || (value !== value && other !== other);
|
1436 | }
|
1437 |
|
1438 | /**
|
1439 | * Checks if `value` is likely an `arguments` object.
|
1440 | *
|
1441 | * @static
|
1442 | * @memberOf _
|
1443 | * @since 0.1.0
|
1444 | * @category Lang
|
1445 | * @param {*} value The value to check.
|
1446 | * @returns {boolean} Returns `true` if `value` is an `arguments` object,
|
1447 | * else `false`.
|
1448 | * @example
|
1449 | *
|
1450 | * _.isArguments(function() { return arguments; }());
|
1451 | * // => true
|
1452 | *
|
1453 | * _.isArguments([1, 2, 3]);
|
1454 | * // => false
|
1455 | */
|
1456 | function isArguments(value) {
|
1457 | // Safari 8.1 makes `arguments.callee` enumerable in strict mode.
|
1458 | return isArrayLikeObject(value) && hasOwnProperty.call(value, 'callee') &&
|
1459 | (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag);
|
1460 | }
|
1461 |
|
1462 | /**
|
1463 | * Checks if `value` is classified as an `Array` object.
|
1464 | *
|
1465 | * @static
|
1466 | * @memberOf _
|
1467 | * @since 0.1.0
|
1468 | * @category Lang
|
1469 | * @param {*} value The value to check.
|
1470 | * @returns {boolean} Returns `true` if `value` is an array, else `false`.
|
1471 | * @example
|
1472 | *
|
1473 | * _.isArray([1, 2, 3]);
|
1474 | * // => true
|
1475 | *
|
1476 | * _.isArray(document.body.children);
|
1477 | * // => false
|
1478 | *
|
1479 | * _.isArray('abc');
|
1480 | * // => false
|
1481 | *
|
1482 | * _.isArray(_.noop);
|
1483 | * // => false
|
1484 | */
|
1485 | var isArray = Array.isArray;
|
1486 |
|
1487 | /**
|
1488 | * Checks if `value` is array-like. A value is considered array-like if it's
|
1489 | * not a function and has a `value.length` that's an integer greater than or
|
1490 | * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
|
1491 | *
|
1492 | * @static
|
1493 | * @memberOf _
|
1494 | * @since 4.0.0
|
1495 | * @category Lang
|
1496 | * @param {*} value The value to check.
|
1497 | * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
|
1498 | * @example
|
1499 | *
|
1500 | * _.isArrayLike([1, 2, 3]);
|
1501 | * // => true
|
1502 | *
|
1503 | * _.isArrayLike(document.body.children);
|
1504 | * // => true
|
1505 | *
|
1506 | * _.isArrayLike('abc');
|
1507 | * // => true
|
1508 | *
|
1509 | * _.isArrayLike(_.noop);
|
1510 | * // => false
|
1511 | */
|
1512 | function isArrayLike(value) {
|
1513 | return value != null && isLength(value.length) && !isFunction(value);
|
1514 | }
|
1515 |
|
1516 | /**
|
1517 | * This method is like `_.isArrayLike` except that it also checks if `value`
|
1518 | * is an object.
|
1519 | *
|
1520 | * @static
|
1521 | * @memberOf _
|
1522 | * @since 4.0.0
|
1523 | * @category Lang
|
1524 | * @param {*} value The value to check.
|
1525 | * @returns {boolean} Returns `true` if `value` is an array-like object,
|
1526 | * else `false`.
|
1527 | * @example
|
1528 | *
|
1529 | * _.isArrayLikeObject([1, 2, 3]);
|
1530 | * // => true
|
1531 | *
|
1532 | * _.isArrayLikeObject(document.body.children);
|
1533 | * // => true
|
1534 | *
|
1535 | * _.isArrayLikeObject('abc');
|
1536 | * // => false
|
1537 | *
|
1538 | * _.isArrayLikeObject(_.noop);
|
1539 | * // => false
|
1540 | */
|
1541 | function isArrayLikeObject(value) {
|
1542 | return isObjectLike(value) && isArrayLike(value);
|
1543 | }
|
1544 |
|
1545 | /**
|
1546 | * Checks if `value` is a buffer.
|
1547 | *
|
1548 | * @static
|
1549 | * @memberOf _
|
1550 | * @since 4.3.0
|
1551 | * @category Lang
|
1552 | * @param {*} value The value to check.
|
1553 | * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
|
1554 | * @example
|
1555 | *
|
1556 | * _.isBuffer(new Buffer(2));
|
1557 | * // => true
|
1558 | *
|
1559 | * _.isBuffer(new Uint8Array(2));
|
1560 | * // => false
|
1561 | */
|
1562 | var isBuffer = nativeIsBuffer || stubFalse;
|
1563 |
|
1564 | /**
|
1565 | * Checks if `value` is classified as a `Function` object.
|
1566 | *
|
1567 | * @static
|
1568 | * @memberOf _
|
1569 | * @since 0.1.0
|
1570 | * @category Lang
|
1571 | * @param {*} value The value to check.
|
1572 | * @returns {boolean} Returns `true` if `value` is a function, else `false`.
|
1573 | * @example
|
1574 | *
|
1575 | * _.isFunction(_);
|
1576 | * // => true
|
1577 | *
|
1578 | * _.isFunction(/abc/);
|
1579 | * // => false
|
1580 | */
|
1581 | function isFunction(value) {
|
1582 | // The use of `Object#toString` avoids issues with the `typeof` operator
|
1583 | // in Safari 8-9 which returns 'object' for typed array and other constructors.
|
1584 | var tag = isObject(value) ? objectToString.call(value) : '';
|
1585 | return tag == funcTag || tag == genTag;
|
1586 | }
|
1587 |
|
1588 | /**
|
1589 | * Checks if `value` is a valid array-like length.
|
1590 | *
|
1591 | * **Note:** This method is loosely based on
|
1592 | * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
|
1593 | *
|
1594 | * @static
|
1595 | * @memberOf _
|
1596 | * @since 4.0.0
|
1597 | * @category Lang
|
1598 | * @param {*} value The value to check.
|
1599 | * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
|
1600 | * @example
|
1601 | *
|
1602 | * _.isLength(3);
|
1603 | * // => true
|
1604 | *
|
1605 | * _.isLength(Number.MIN_VALUE);
|
1606 | * // => false
|
1607 | *
|
1608 | * _.isLength(Infinity);
|
1609 | * // => false
|
1610 | *
|
1611 | * _.isLength('3');
|
1612 | * // => false
|
1613 | */
|
1614 | function isLength(value) {
|
1615 | return typeof value == 'number' &&
|
1616 | value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
|
1617 | }
|
1618 |
|
1619 | /**
|
1620 | * Checks if `value` is the
|
1621 | * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
|
1622 | * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
|
1623 | *
|
1624 | * @static
|
1625 | * @memberOf _
|
1626 | * @since 0.1.0
|
1627 | * @category Lang
|
1628 | * @param {*} value The value to check.
|
1629 | * @returns {boolean} Returns `true` if `value` is an object, else `false`.
|
1630 | * @example
|
1631 | *
|
1632 | * _.isObject({});
|
1633 | * // => true
|
1634 | *
|
1635 | * _.isObject([1, 2, 3]);
|
1636 | * // => true
|
1637 | *
|
1638 | * _.isObject(_.noop);
|
1639 | * // => true
|
1640 | *
|
1641 | * _.isObject(null);
|
1642 | * // => false
|
1643 | */
|
1644 | function isObject(value) {
|
1645 | var type = typeof value;
|
1646 | return !!value && (type == 'object' || type == 'function');
|
1647 | }
|
1648 |
|
1649 | /**
|
1650 | * Checks if `value` is object-like. A value is object-like if it's not `null`
|
1651 | * and has a `typeof` result of "object".
|
1652 | *
|
1653 | * @static
|
1654 | * @memberOf _
|
1655 | * @since 4.0.0
|
1656 | * @category Lang
|
1657 | * @param {*} value The value to check.
|
1658 | * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
|
1659 | * @example
|
1660 | *
|
1661 | * _.isObjectLike({});
|
1662 | * // => true
|
1663 | *
|
1664 | * _.isObjectLike([1, 2, 3]);
|
1665 | * // => true
|
1666 | *
|
1667 | * _.isObjectLike(_.noop);
|
1668 | * // => false
|
1669 | *
|
1670 | * _.isObjectLike(null);
|
1671 | * // => false
|
1672 | */
|
1673 | function isObjectLike(value) {
|
1674 | return !!value && typeof value == 'object';
|
1675 | }
|
1676 |
|
1677 | /**
|
1678 | * Creates an array of the own enumerable property names of `object`.
|
1679 | *
|
1680 | * **Note:** Non-object values are coerced to objects. See the
|
1681 | * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
|
1682 | * for more details.
|
1683 | *
|
1684 | * @static
|
1685 | * @since 0.1.0
|
1686 | * @memberOf _
|
1687 | * @category Object
|
1688 | * @param {Object} object The object to query.
|
1689 | * @returns {Array} Returns the array of property names.
|
1690 | * @example
|
1691 | *
|
1692 | * function Foo() {
|
1693 | * this.a = 1;
|
1694 | * this.b = 2;
|
1695 | * }
|
1696 | *
|
1697 | * Foo.prototype.c = 3;
|
1698 | *
|
1699 | * _.keys(new Foo);
|
1700 | * // => ['a', 'b'] (iteration order is not guaranteed)
|
1701 | *
|
1702 | * _.keys('hi');
|
1703 | * // => ['0', '1']
|
1704 | */
|
1705 | function keys(object) {
|
1706 | return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
|
1707 | }
|
1708 |
|
1709 | /**
|
1710 | * This method returns a new empty array.
|
1711 | *
|
1712 | * @static
|
1713 | * @memberOf _
|
1714 | * @since 4.13.0
|
1715 | * @category Util
|
1716 | * @returns {Array} Returns the new empty array.
|
1717 | * @example
|
1718 | *
|
1719 | * var arrays = _.times(2, _.stubArray);
|
1720 | *
|
1721 | * console.log(arrays);
|
1722 | * // => [[], []]
|
1723 | *
|
1724 | * console.log(arrays[0] === arrays[1]);
|
1725 | * // => false
|
1726 | */
|
1727 | function stubArray() {
|
1728 | return [];
|
1729 | }
|
1730 |
|
1731 | /**
|
1732 | * This method returns `false`.
|
1733 | *
|
1734 | * @static
|
1735 | * @memberOf _
|
1736 | * @since 4.13.0
|
1737 | * @category Util
|
1738 | * @returns {boolean} Returns `false`.
|
1739 | * @example
|
1740 | *
|
1741 | * _.times(2, _.stubFalse);
|
1742 | * // => [false, false]
|
1743 | */
|
1744 | function stubFalse() {
|
1745 | return false;
|
1746 | }
|
1747 |
|
1748 | module.exports = cloneDeep;
|