i)if(has(O,key=names[i++])){~$indexOf(result,key)||result.push(key)}return result}}function Empty(){}$def($def.S,"Object",{getPrototypeOf:$.getProto=$.getProto||function(O){O=Object(assert.def(O));if(has(O,IE_PROTO))return O[IE_PROTO];if(isFunction(O.constructor)&&O instanceof O.constructor){return O.constructor.prototype}return O instanceof O