graalvm/elide.runtime.intrinsics.js.node/EventsAPI/listenerCount

listenerCount

abstract fun listenerCount(emitter: Value, event: String): Int

Returns the number of listeners listening to the event named event.

Return

The number of listeners listening to the event named event.

Parameters

emitter

The EventEmitter to query.

event

The name of the event to query.

abstract fun listenerCount(emitter: EventEmitterOrTarget, eventName: String): Int

Returns the number of listeners listening to the event named eventName.

Return

The number of listeners listening to the event named eventName.

Parameters

emitter

The EventEmitter or EventTarget to query.

eventName

The name of the event to query.