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| 1 | +/*! |
| 2 | +Copyright (C) 2015 by WebReflection |
| 3 | +
|
| 4 | +Permission is hereby granted, free of charge, to any person obtaining a copy |
| 5 | +of this software and associated documentation files (the "Software"), to deal |
| 6 | +in the Software without restriction, including without limitation the rights |
| 7 | +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 8 | +copies of the Software, and to permit persons to whom the Software is |
| 9 | +furnished to do so, subject to the following conditions: |
| 10 | +
|
| 11 | +The above copyright notice and this permission notice shall be included in |
| 12 | +all copies or substantial portions of the Software. |
| 13 | +
|
| 14 | +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 15 | +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 17 | +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 18 | +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 19 | +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 20 | +THE SOFTWARE. |
| 21 | +
|
| 22 | +*/ |
| 23 | +(function (Object, GOPS) {'use strict'; |
| 24 | + |
| 25 | + // (C) Andrea Giammarchi - Mit Style |
| 26 | + |
| 27 | + if (GOPS in Object) return; |
| 28 | + |
| 29 | + var |
| 30 | + setDescriptor, |
| 31 | + G = typeof global === typeof G ? window : global, |
| 32 | + id = 0, |
| 33 | + random = '' + Math.random(), |
| 34 | + prefix = '__\x01symbol:', |
| 35 | + prefixLength = prefix.length, |
| 36 | + internalSymbol = '__\x01symbol@@' + random, |
| 37 | + DP = 'defineProperty', |
| 38 | + DPies = 'defineProperties', |
| 39 | + GOPN = 'getOwnPropertyNames', |
| 40 | + GOPD = 'getOwnPropertyDescriptor', |
| 41 | + PIE = 'propertyIsEnumerable', |
| 42 | + gOPN = Object[GOPN], |
| 43 | + gOPD = Object[GOPD], |
| 44 | + create = Object.create, |
| 45 | + keys = Object.keys, |
| 46 | + freeze = Object.freeze || Object, |
| 47 | + defineProperty = Object[DP], |
| 48 | + $defineProperties = Object[DPies], |
| 49 | + descriptor = gOPD(Object, GOPN), |
| 50 | + ObjectProto = Object.prototype, |
| 51 | + hOP = ObjectProto.hasOwnProperty, |
| 52 | + pIE = ObjectProto[PIE], |
| 53 | + toString = ObjectProto.toString, |
| 54 | + addInternalIfNeeded = function (o, uid, enumerable) { |
| 55 | + if (!hOP.call(o, internalSymbol)) { |
| 56 | + defineProperty(o, internalSymbol, { |
| 57 | + enumerable: false, |
| 58 | + configurable: false, |
| 59 | + writable: false, |
| 60 | + value: {} |
| 61 | + }); |
| 62 | + } |
| 63 | + o[internalSymbol]['@@' + uid] = enumerable; |
| 64 | + }, |
| 65 | + createWithSymbols = function (proto, descriptors) { |
| 66 | + var self = create(proto); |
| 67 | + gOPN(descriptors).forEach(function (key) { |
| 68 | + if (propertyIsEnumerable.call(descriptors, key)) { |
| 69 | + $defineProperty(self, key, descriptors[key]); |
| 70 | + } |
| 71 | + }); |
| 72 | + return self; |
| 73 | + }, |
| 74 | + copyAsNonEnumerable = function (descriptor) { |
| 75 | + var newDescriptor = create(descriptor); |
| 76 | + newDescriptor.enumerable = false; |
| 77 | + return newDescriptor; |
| 78 | + }, |
| 79 | + get = function get(){}, |
| 80 | + onlyNonSymbols = function (name) { |
| 81 | + return name != internalSymbol && |
| 82 | + !hOP.call(source, name); |
| 83 | + }, |
| 84 | + onlySymbols = function (name) { |
| 85 | + return name != internalSymbol && |
| 86 | + hOP.call(source, name); |
| 87 | + }, |
| 88 | + propertyIsEnumerable = function propertyIsEnumerable(key) { |
| 89 | + var uid = '' + key; |
| 90 | + return onlySymbols(uid) ? ( |
| 91 | + hOP.call(this, uid) && |
| 92 | + this[internalSymbol]['@@' + uid] |
| 93 | + ) : pIE.call(this, key); |
| 94 | + }, |
| 95 | + setAndGetSymbol = function (uid) { |
| 96 | + var descriptor = { |
| 97 | + enumerable: false, |
| 98 | + configurable: true, |
| 99 | + get: get, |
| 100 | + set: function (value) { |
| 101 | + setDescriptor(this, uid, { |
| 102 | + enumerable: false, |
| 103 | + configurable: true, |
| 104 | + writable: true, |
| 105 | + value: value |
| 106 | + }); |
| 107 | + addInternalIfNeeded(this, uid, true); |
| 108 | + } |
| 109 | + }; |
| 110 | + defineProperty(ObjectProto, uid, descriptor); |
| 111 | + return freeze(source[uid] = defineProperty( |
| 112 | + Object(uid), |
| 113 | + 'constructor', |
| 114 | + sourceConstructor |
| 115 | + )); |
| 116 | + }, |
| 117 | + Symbol = function Symbol(description) { |
| 118 | + if (this instanceof Symbol) { |
| 119 | + throw new TypeError('Symbol is not a constructor'); |
| 120 | + } |
| 121 | + return setAndGetSymbol( |
| 122 | + prefix.concat(description || '', random, ++id) |
| 123 | + ); |
| 124 | + }, |
| 125 | + source = create(null), |
| 126 | + sourceConstructor = {value: Symbol}, |
| 127 | + sourceMap = function (uid) { |
| 128 | + return source[uid]; |
| 129 | + }, |
| 130 | + $defineProperty = function defineProp(o, key, descriptor) { |
| 131 | + var uid = '' + key; |
| 132 | + if (onlySymbols(uid)) { |
| 133 | + setDescriptor(o, uid, descriptor.enumerable ? |
| 134 | + copyAsNonEnumerable(descriptor) : descriptor); |
| 135 | + addInternalIfNeeded(o, uid, !!descriptor.enumerable); |
| 136 | + } else { |
| 137 | + defineProperty(o, key, descriptor); |
| 138 | + } |
| 139 | + return o; |
| 140 | + }, |
| 141 | + $getOwnPropertySymbols = function getOwnPropertySymbols(o) { |
| 142 | + return gOPN(o).filter(onlySymbols).map(sourceMap); |
| 143 | + } |
| 144 | + ; |
| 145 | + |
| 146 | + descriptor.value = $defineProperty; |
| 147 | + defineProperty(Object, DP, descriptor); |
| 148 | + |
| 149 | + descriptor.value = $getOwnPropertySymbols; |
| 150 | + defineProperty(Object, GOPS, descriptor); |
| 151 | + |
| 152 | + /** |
| 153 | + * @see https://github.com/aurelia/polyfills/pull/52/files |
| 154 | + */ |
| 155 | + var cachedWindowNames = typeof window === 'object' ? Object.getOwnPropertyNames(window) : []; |
| 156 | + var originalObjectGetOwnPropertyNames = Object.getOwnPropertyNames; |
| 157 | + descriptor.value = function getOwnPropertyNames(o) { |
| 158 | + if (toString.call(o) === '[object Window]') { |
| 159 | + try { |
| 160 | + return originalObjectGetOwnPropertyNames(o); |
| 161 | + } catch (e) { |
| 162 | + // IE bug where layout engine calls userland gOPN for cross-domain "window" objects |
| 163 | + return [].concat([], cachedWindowNames); |
| 164 | + } |
| 165 | + } |
| 166 | + |
| 167 | + return gOPN(o).filter(onlyNonSymbols); |
| 168 | + }; |
| 169 | + defineProperty(Object, GOPN, descriptor); |
| 170 | + |
| 171 | + descriptor.value = function defineProperties(o, descriptors) { |
| 172 | + var symbols = $getOwnPropertySymbols(descriptors); |
| 173 | + if (symbols.length) { |
| 174 | + keys(descriptors).concat(symbols).forEach(function (uid) { |
| 175 | + if (propertyIsEnumerable.call(descriptors, uid)) { |
| 176 | + $defineProperty(o, uid, descriptors[uid]); |
| 177 | + } |
| 178 | + }); |
| 179 | + } else { |
| 180 | + $defineProperties(o, descriptors); |
| 181 | + } |
| 182 | + return o; |
| 183 | + }; |
| 184 | + defineProperty(Object, DPies, descriptor); |
| 185 | + |
| 186 | + descriptor.value = propertyIsEnumerable; |
| 187 | + defineProperty(ObjectProto, PIE, descriptor); |
| 188 | + |
| 189 | + descriptor.value = Symbol; |
| 190 | + defineProperty(G, 'Symbol', descriptor); |
| 191 | + |
| 192 | + // defining `Symbol.for(key)` |
| 193 | + descriptor.value = function (key) { |
| 194 | + var uid = prefix.concat(prefix, key, random); |
| 195 | + return uid in ObjectProto ? source[uid] : setAndGetSymbol(uid); |
| 196 | + }; |
| 197 | + defineProperty(Symbol, 'for', descriptor); |
| 198 | + |
| 199 | + // defining `Symbol.keyFor(symbol)` |
| 200 | + descriptor.value = function (symbol) { |
| 201 | + if (onlyNonSymbols(symbol)) |
| 202 | + throw new TypeError(symbol + ' is not a symbol'); |
| 203 | + if (!hOP.call(source, symbol)) { |
| 204 | + return void 0; |
| 205 | + } |
| 206 | + var label = symbol.slice(prefixLength); |
| 207 | + if (label.slice(0, prefixLength) !== prefix) { |
| 208 | + return void 0; |
| 209 | + } |
| 210 | + label = label.slice(prefixLength); |
| 211 | + if (label === random) { |
| 212 | + return void 0; |
| 213 | + } |
| 214 | + label = label.slice(0, label.length - random.length); |
| 215 | + return label.length > 0 ? label : void 0; |
| 216 | + }; |
| 217 | + defineProperty(Symbol, 'keyFor', descriptor); |
| 218 | + |
| 219 | + descriptor.value = function getOwnPropertyDescriptor(o, key) { |
| 220 | + var descriptor = gOPD(o, key); |
| 221 | + if (descriptor && onlySymbols(key)) { |
| 222 | + descriptor.enumerable = propertyIsEnumerable.call(o, key); |
| 223 | + } |
| 224 | + return descriptor; |
| 225 | + }; |
| 226 | + defineProperty(Object, GOPD, descriptor); |
| 227 | + |
| 228 | + descriptor.value = function (proto, descriptors) { |
| 229 | + return (arguments.length === 1 || typeof descriptors === "undefined") ? |
| 230 | + create(proto) : |
| 231 | + createWithSymbols(proto, descriptors); |
| 232 | + }; |
| 233 | + defineProperty(Object, 'create', descriptor); |
| 234 | + |
| 235 | + descriptor.value = function () { |
| 236 | + var str = toString.call(this); |
| 237 | + return (str === '[object String]' && onlySymbols(this)) ? '[object Symbol]' : str; |
| 238 | + }; |
| 239 | + defineProperty(ObjectProto, 'toString', descriptor); |
| 240 | + |
| 241 | + try { // fails in few pre ES 5.1 engines |
| 242 | + if (true === create( |
| 243 | + defineProperty( |
| 244 | + {}, |
| 245 | + prefix, |
| 246 | + { |
| 247 | + get: function () { |
| 248 | + return defineProperty(this, prefix, {value: true})[prefix]; |
| 249 | + } |
| 250 | + } |
| 251 | + ) |
| 252 | + )[prefix]) { |
| 253 | + setDescriptor = defineProperty; |
| 254 | + } else { |
| 255 | + throw 'IE11'; |
| 256 | + } |
| 257 | + } catch(o_O) { |
| 258 | + setDescriptor = function (o, key, descriptor) { |
| 259 | + var protoDescriptor = gOPD(ObjectProto, key); |
| 260 | + delete ObjectProto[key]; |
| 261 | + defineProperty(o, key, descriptor); |
| 262 | + defineProperty(ObjectProto, key, protoDescriptor); |
| 263 | + }; |
| 264 | + } |
| 265 | + |
| 266 | +}(Object, 'getOwnPropertySymbols')); |
| 267 | + |
| 268 | +(function (O, Symbol) {'use strict'; |
| 269 | + var |
| 270 | + dP = O.defineProperty, |
| 271 | + ObjectProto = O.prototype, |
| 272 | + toString = ObjectProto.toString, |
| 273 | + toStringTag = 'toStringTag', |
| 274 | + descriptor |
| 275 | + ; |
| 276 | + [ |
| 277 | + 'iterator', // A method returning the default iterator for an object. Used by for...of. |
| 278 | + 'match', // A method that matches against a string, also used to determine if an object may be used as a regular expression. Used by String.prototype.match(). |
| 279 | + 'replace', // A method that replaces matched substrings of a string. Used by String.prototype.replace(). |
| 280 | + 'search', // A method that returns the index within a string that matches the regular expression. Used by String.prototype.search(). |
| 281 | + 'split', // A method that splits a string at the indices that match a regular expression. Used by String.prototype.split(). |
| 282 | + 'hasInstance', // A method determining if a constructor object recognizes an object as its instance. Used by instanceof. |
| 283 | + 'isConcatSpreadable', // A Boolean value indicating if an object should be flattened to its array elements. Used by Array.prototype.concat(). |
| 284 | + 'unscopables', // An Array of string values that are property values. These are excluded from the with environment bindings of the associated objects. |
| 285 | + 'species', // A constructor function that is used to create derived objects. |
| 286 | + 'toPrimitive', // A method converting an object to a primitive value. |
| 287 | + toStringTag // A string value used for the default description of an object. Used by Object.prototype.toString(). |
| 288 | + ].forEach(function (name) { |
| 289 | + if (!(name in Symbol)) { |
| 290 | + dP(Symbol, name, {value: Symbol(name)}); |
| 291 | + switch (name) { |
| 292 | + case toStringTag: |
| 293 | + descriptor = O.getOwnPropertyDescriptor(ObjectProto, 'toString'); |
| 294 | + descriptor.value = function () { |
| 295 | + var |
| 296 | + str = toString.call(this), |
| 297 | + tst = this != null ? this[Symbol.toStringTag] : this |
| 298 | + ; |
| 299 | + return tst == null ? str : ('[object ' + tst + ']'); |
| 300 | + }; |
| 301 | + dP(ObjectProto, 'toString', descriptor); |
| 302 | + break; |
| 303 | + } |
| 304 | + } |
| 305 | + }); |
| 306 | +}(Object, Symbol)); |
| 307 | + |
| 308 | +(function (Si, AP, SP) { |
| 309 | + |
| 310 | + function returnThis() { return this; } |
| 311 | + |
| 312 | + // make Arrays usable as iterators |
| 313 | + // so that other iterables can copy same logic |
| 314 | + if (!AP[Si]) AP[Si] = function () { |
| 315 | + var |
| 316 | + i = 0, |
| 317 | + self = this, |
| 318 | + iterator = { |
| 319 | + next: function next() { |
| 320 | + var done = self.length <= i; |
| 321 | + return done ? |
| 322 | + {done: done} : |
| 323 | + {done: done, value: self[i++]}; |
| 324 | + } |
| 325 | + } |
| 326 | + ; |
| 327 | + iterator[Si] = returnThis; |
| 328 | + return iterator; |
| 329 | + }; |
| 330 | + |
| 331 | + // make Strings usable as iterators |
| 332 | + // to simplify Array.from and for/of like loops |
| 333 | + if (!SP[Si]) SP[Si] = function () { |
| 334 | + var |
| 335 | + fromCodePoint = String.fromCodePoint, |
| 336 | + self = this, |
| 337 | + i = 0, |
| 338 | + length = self.length, |
| 339 | + iterator = { |
| 340 | + next: function next() { |
| 341 | + var |
| 342 | + done = length <= i, |
| 343 | + c = done ? '' : fromCodePoint(self.codePointAt(i)) |
| 344 | + ; |
| 345 | + i += c.length; |
| 346 | + return done ? |
| 347 | + {done: done} : |
| 348 | + {done: done, value: c}; |
| 349 | + } |
| 350 | + } |
| 351 | + ; |
| 352 | + iterator[Si] = returnThis; |
| 353 | + return iterator; |
| 354 | + }; |
| 355 | + |
| 356 | +}(Symbol.iterator, Array.prototype, String.prototype)); |
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