method

tls.TLSSocket.listenerCount

eventName: E,
listener?: (...args: TLSSocketEventMap[E]) => void
): number;

Returns 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.

@param eventName

The name of the event being listened for

@param listener

The event handler function

eventName: string | symbol,
listener?: (...args: any[]) => void
): number;