Synchronously calls each of the listeners registered for the event named eventName, in the order they were registered, passing the supplied arguments to each.

eventNames

external fun eventNames(): ReadonlyArray<EventType>

Returns an array listing the events for which the emitter has registered listeners. The values in the array are strings or Symbols.

getMaxListeners

external fun getMaxListeners(): Double

Returns the current max listener value for the EventEmitter which is either set by emitter.setMaxListeners(n) or defaults to {@link EventEmitter.defaultMaxListeners}.

listenerCount

external fun listenerCount(type: EventType, listener: EventListener = definedExternally): Double

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.

listeners

external fun listeners(type: EventType): ReadonlyArray<EventListener>

Returns a copy of the array of listeners for the event named eventName.

off

external fun off(type: EventType, listener: EventListener)

Alias for emitter.removeListener().

external fun on(type: EventType, listener: EventListener)

Adds the listener function to the end of the listeners array for the event named eventName. No checks are made to see if the listener has already been added. Multiple calls passing the same combination of eventName and listener will result in the listener being added, and called, multiple times.

abstract external fun on(event: String, listener: Function<Unit>)

once

external fun once(type: EventType, listener: EventListener)

Adds a one-time listener function for the event named eventName. The next time eventName is triggered, this listener is removed and then invoked.

abstract external fun once(event: String, listener: Function<Unit>)

prependListener

external fun prependListener(type: EventType, listener: EventListener)

Adds the listener function to the beginning of the listeners array for the event named eventName. No checks are made to see if the listener has already been added. Multiple calls passing the same combination of eventName and listener will result in the listener being added, and called, multiple times.

abstract external fun prependListener(event: String, listener: Function<Unit>)

prependOnceListener

external fun prependOnceListener(type: EventType, listener: EventListener)

Adds a one-timelistener function for the event named eventName to the beginning of the listeners array. The next time eventName is triggered, this listener is removed, and then invoked.

abstract external fun prependOnceListener(event: String, listener: Function<Unit>)

rawListeners

external fun rawListeners(type: EventType): ReadonlyArray<EventListener>

Returns a copy of the array of listeners for the event named eventName, including any wrappers (such as those created by .once()).

ref

abstract external fun ref()

When called, requests that the Node.js event loop not exit so long as the fs.FSWatcher is active. Calling watcher.ref() multiple times will have no effect.

removeAllListeners

external fun removeAllListeners(type: EventType = definedExternally)

Removes all listeners, or those of the specified eventName.

removeListener

external fun removeListener(type: EventType, listener: EventListener)

Removes the specified listener from the listener array for the event named eventName.

setMaxListeners

external fun setMaxListeners(n: Number)

By default EventEmitters will print a warning if more than 10 listeners are added for a particular event. This is a useful default that helps finding memory leaks. The emitter.setMaxListeners() method allows the limit to be modified for this specific EventEmitter instance. The value can be set to Infinity (or 0) to indicate an unlimited number of listeners.

unref

abstract external fun unref()

When called, the active fs.FSWatcher object will not require the Node.js event loop to remain active. If there is no other activity keeping the event loop running, the process may exit before the fs.FSWatcher object's callback is invoked. Calling watcher.unref() multiple times will have no effect.