Is there a way to check for @Output wire up from within a component in Angular?

In the ngOnInit method of a component the @Input values will have been bound so you can check those properties on the component, but there doesn't seem to be a way to check @Output event bindings. I want to be able to know if the @Output was wired up on the component or not.

(using Angular and TypeScript)

import {Component, Output, EventEmitter} from '@angular/core';

@Component({
selector: 'sample',
template: `<p>a sample</p>`
})
export class SampleComponent {
@Output() cancel = new EventEmitter();

ngOnInit() {
// would like to check and see if cancel was used
// on the element <sample (cancel)="doSomething()"></sample>
// or not <sample></sample>
}
}

Continue reading...