T5
}

// Actual test case from issue 7158.

func wrapNode() Node {
	return wrapElement()
}

func wrapElement() Element {
	return nil
}

type EventTarget interface {
	AddEventListener(Event)
}

type Node interface {
	EventTarget
}

type Element interface {
	Node
}

type Event interface {
	Target() Element
}

cusEvent",{relatedTarget:null},"UIEvent")}var be=window.BeforeUnloadEvent;M.prototype=Object.create(y.prototype),W(M.prototype,{get returnValue(){return q(this).returnValue},set returnValue(e){q(this).returnValue=e}}),be&&F(be,M);var ye=window.EventTarget,Ee=["addEventListener","removeEventListener","dispatchEvent"];[Node,Window].forEach(function(e){var t=e.prototype;Ee.forEach(function(e){Object.defineProperty(t,e+"_",{value:t[e]})})}),N.prototype={addEventListener:function(e,t,n){if(O(t)&&!L(e)){var...

EventTarget.decorate=function(target){for(const k in EventTarget.prototype){if(k==='decorate')continue;const v=EventTarget.prototype[k];if(typeof v!=='function')continue;target[k]=v;}};EventTarget.prototype={addEventListener(type,handler){if(!this.listeners_){this.listeners_=Object.create(null);}