appendTo(selector: string | Simple.Element) {
    let target;

    if (this._environment.hasDOM) {
      target = typeof selector === 'string' ? document.querySelector(selector) : selector;
    } else {
      target = selector;
    }

    schedule('render', this.renderer, 'appendOutletView', this, target);
  }

    activeObservers.forEach((observer, eventName) => {
      if (!observer.tag.validate(observer.lastRevision)) {
        let sendObserver = () => {
          try {
            sendEvent(target, eventName, [target, observer.path]);
          } finally {
            observer.tag = getChainTagsForKey(target, observer.path);
            observer.lastRevision = observer.tag.value();
          }
        };

        if (shouldSchedule) {
          schedule('actions', sendObserver);
        } else {
          // TODO: we need to schedule eagerly in exactly one location (_internalReset),
          // for query params. We should get rid of this ASAP
          sendObserver();
        }
      }
    });

 didUpdateAttrs() {
   schedule('render', () => this.mountElement());
 }