src/vs/base/browser/dom.ts/DomListener/constructor
class DomListener:	constructor(node: EventTarget, type: string, handler: (e: any) => void, options?: boolean | AddEventListenerOptions) {
		this._node = node;
		this._type = type;
		this._handler = handler;
		this._options = (options || false);
		this._node.addEventListener(this._type, this._handler, this._options);
	}