es.regexp.sticky.js
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es.regexp.sticky.js
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	var DESCRIPTORS = require('../internals/descriptors');
	var MISSED_STICKY = require('../internals/regexp-sticky-helpers').MISSED_STICKY;
	var classof = require('../internals/classof-raw');
	var defineBuiltInAccessor = require('../internals/define-built-in-accessor');
	var getInternalState = require('../internals/internal-state').get;

	var RegExpPrototype = RegExp.prototype;
	var $TypeError = TypeError;

	// `RegExp.prototype.sticky` getter
	// https://tc39.es/ecma262/#sec-get-regexp.prototype.sticky
	if (DESCRIPTORS && MISSED_STICKY) {
	defineBuiltInAccessor(RegExpPrototype, 'sticky', {
	configurable: true,
	get: function sticky() {
	if (this === RegExpPrototype) return undefined;
	// We can't use InternalStateModule.getterFor because
	// we don't add metadata for regexps created by a literal.
	if (classof(this) === 'RegExp') {
	return !!getInternalState(this).sticky;
	}
	throw $TypeError('Incompatible receiver, RegExp required');
	}
	});
	}