'use strict';

var create = Object.create, getPrototypeOf = Object.getPrototypeOf
  , x = {};

module.exports = function (/*customCreate*/) {
	var setPrototypeOf = Object.setPrototypeOf
	  , customCreate = arguments[0] || create;
	if (typeof setPrototypeOf !== 'function') return false;
	return getPrototypeOf(setPrototypeOf(customCreate(null), x)) === x;
};