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56 lines
1.5 KiB
56 lines
1.5 KiB
2 years ago
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var global = require('../internals/global');
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var DESCRIPTORS = require('../internals/descriptors');
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var defineBuiltInAccessor = require('../internals/define-built-in-accessor');
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var regExpFlags = require('../internals/regexp-flags');
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var fails = require('../internals/fails');
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// babel-minify and Closure Compiler transpiles RegExp('.', 'd') -> /./d and it causes SyntaxError
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var RegExp = global.RegExp;
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var RegExpPrototype = RegExp.prototype;
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var FORCED = DESCRIPTORS && fails(function () {
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var INDICES_SUPPORT = true;
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try {
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RegExp('.', 'd');
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} catch (error) {
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INDICES_SUPPORT = false;
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}
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var O = {};
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// modern V8 bug
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var calls = '';
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var expected = INDICES_SUPPORT ? 'dgimsy' : 'gimsy';
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var addGetter = function (key, chr) {
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// eslint-disable-next-line es-x/no-object-defineproperty -- safe
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Object.defineProperty(O, key, { get: function () {
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calls += chr;
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return true;
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} });
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};
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var pairs = {
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dotAll: 's',
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global: 'g',
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ignoreCase: 'i',
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multiline: 'm',
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sticky: 'y'
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};
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if (INDICES_SUPPORT) pairs.hasIndices = 'd';
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for (var key in pairs) addGetter(key, pairs[key]);
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// eslint-disable-next-line es-x/no-object-getownpropertydescriptor -- safe
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var result = Object.getOwnPropertyDescriptor(RegExpPrototype, 'flags').get.call(O);
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return result !== expected || calls !== expected;
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});
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// `RegExp.prototype.flags` getter
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// https://tc39.es/ecma262/#sec-get-regexp.prototype.flags
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if (FORCED) defineBuiltInAccessor(RegExpPrototype, 'flags', {
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configurable: true,
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get: regExpFlags
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});
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