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Current File : //var/www/html/node_modules/regexp.prototype.flags/shim.js

'use strict';

var supportsDescriptors = require('define-properties').supportsDescriptors;
var getPolyfill = require('./polyfill');
var gOPD = Object.getOwnPropertyDescriptor;
var defineProperty = Object.defineProperty;
var TypeErr = TypeError;
var getProto = Object.getPrototypeOf;
var regex = /a/;

module.exports = function shimFlags() {
	if (!supportsDescriptors || !getProto) {
		throw new TypeErr('RegExp.prototype.flags requires a true ES5 environment that supports property descriptors');
	}
	var polyfill = getPolyfill();
	var proto = getProto(regex);
	var descriptor = gOPD(proto, 'flags');
	if (!descriptor || descriptor.get !== polyfill) {
		defineProperty(proto, 'flags', {
			configurable: true,
			enumerable: false,
			get: polyfill
		});
	}
	return polyfill;
};

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