block26.ts

export function listenToElementOutputs(view: ViewData, compView: ViewData, def: NodeDef, el: any) {
  for (let i = 0; i < def.outputs.length; i++) {
    const output = def.outputs[i];
    const handleEventClosure = renderEventHandlerClosure(
        view, def.nodeIndex, elementEventFullName(output.target, output.eventName));
...
    const disposable =
        <any>listenerView.renderer.listen(listenTarget || el, output.eventName, handleEventClosure);
    view.disposables ![def.outputIndex + i] = disposable;
  }
}

function renderEventHandlerClosure(view: ViewData, index: number, eventName: string) {
  return (event: any) => dispatchEvent(view, index, eventName, event);
}