var DESCRIPTORS = require('../internals/descriptors'); var UNSUPPORTED_Y = require('../internals/regexp-sticky-helpers').UNSUPPORTED_Y; var defineProperty = require('../internals/object-define-property').f; var getInternalState = require('../internals/internal-state').get; var RegExpPrototype = RegExp.prototype; // `RegExp.prototype.sticky` getter // https://tc39.es/ecma262/#sec-get-regexp.prototype.sticky if (DESCRIPTORS && UNSUPPORTED_Y) { defineProperty(RegExpPrototype, 'sticky', { configurable: true, get: function () { if (this === RegExpPrototype) return undefined; // We can't use InternalStateModule.getterFor because // we don't add metadata for regexps created by a literal. if (this instanceof RegExp) { return !!getInternalState(this).sticky; } throw TypeError('Incompatible receiver, RegExp required'); } }); }