1 | var DESCRIPTORS = require('../internals/descriptors');
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2 | var global = require('../internals/global');
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3 | var isForced = require('../internals/is-forced');
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4 | var inheritIfRequired = require('../internals/inherit-if-required');
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5 | var defineProperty = require('../internals/object-define-property').f;
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6 | var getOwnPropertyNames = require('../internals/object-get-own-property-names').f;
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7 | var isRegExp = require('../internals/is-regexp');
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8 | var getFlags = require('../internals/regexp-flags');
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9 | var redefine = require('../internals/redefine');
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10 | var fails = require('../internals/fails');
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11 | var setSpecies = require('../internals/set-species');
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12 | var wellKnownSymbol = require('../internals/well-known-symbol');
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13 |
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14 | var MATCH = wellKnownSymbol('match');
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15 | var NativeRegExp = global.RegExp;
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16 | var RegExpPrototype = NativeRegExp.prototype;
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17 | var re1 = /a/g;
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18 | var re2 = /a/g;
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19 |
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20 |
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21 | var CORRECT_NEW = new NativeRegExp(re1) !== re1;
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22 |
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23 | var FORCED = DESCRIPTORS && isForced('RegExp', (!CORRECT_NEW || fails(function () {
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24 | re2[MATCH] = false;
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25 |
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26 | return NativeRegExp(re1) != re1 || NativeRegExp(re2) == re2 || NativeRegExp(re1, 'i') != '/a/i';
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27 | })));
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28 |
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29 |
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30 |
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31 | if (FORCED) {
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32 | var RegExpWrapper = function RegExp(pattern, flags) {
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33 | var thisIsRegExp = this instanceof RegExpWrapper;
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34 | var patternIsRegExp = isRegExp(pattern);
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35 | var flagsAreUndefined = flags === undefined;
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36 | return !thisIsRegExp && patternIsRegExp && pattern.constructor === RegExpWrapper && flagsAreUndefined ? pattern
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37 | : inheritIfRequired(CORRECT_NEW
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38 | ? new NativeRegExp(patternIsRegExp && !flagsAreUndefined ? pattern.source : pattern, flags)
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39 | : NativeRegExp((patternIsRegExp = pattern instanceof RegExpWrapper)
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40 | ? pattern.source
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41 | : pattern, patternIsRegExp && flagsAreUndefined ? getFlags.call(pattern) : flags)
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42 | , thisIsRegExp ? this : RegExpPrototype, RegExpWrapper);
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43 | };
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44 | var proxy = function (key) {
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45 | key in RegExpWrapper || defineProperty(RegExpWrapper, key, {
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46 | configurable: true,
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47 | get: function () { return NativeRegExp[key]; },
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48 | set: function (it) { NativeRegExp[key] = it; }
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49 | });
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50 | };
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51 | var keys = getOwnPropertyNames(NativeRegExp);
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52 | var index = 0;
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53 | while (keys.length > index) proxy(keys[index++]);
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54 | RegExpPrototype.constructor = RegExpWrapper;
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55 | RegExpWrapper.prototype = RegExpPrototype;
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56 | redefine(global, 'RegExp', RegExpWrapper);
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57 | }
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58 |
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59 |
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60 | setSpecies('RegExp');
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