method EventEmitter.listenerCount
Jump to headingEventEmitter.listenerCount<K>(): numberReturns the number of listeners listening for the event named eventName.
If listener is provided, it will return how many times the listener is found
in the list of the listeners of the event.
Type Parameters Jump to heading
Parameters Jump to heading
Jump to headingeventName: Key<K, T>The name of the event being listened for
optional
Jump to headinglistener: Listener2<K, T>The event handler function
Return Type Jump to heading
number