Re-enter angular2 component cause multiple 'Idle' instance subscribing

[vincent-cm]

In my application, there is a necessary to frequently re-visit a core component. I follow the example to reset the idle using idle.watch() every time the component class constructs. The behaviour is wrong so that each visit will create a running instance. Thus multiple onTimeout, onIdleEnd event will fire together when due. Even if I have programmably enforce idle.stop when the component onDestroy.

[vincent-cm]

unsubscribe programmably in OnDestroy