Implements an asynchronous event emitter where callbacks can be subscribed to specific named events. When events are emitted, the callbacks are called in the order that they were originally registered.

on
once
onSync
onceSync
emit
getListeners
getListenerCount
removeListener
removeAllListeners
waitFor

Subscribes a callback to be called every time the named event is emitted. Callbacks registered with this method will automatically be wrapped as a new coroutine when they are called. Returns the original callback for convenience.

Name	Type
name	string
fn	function

Returns: function

Subscribes a callback to be called only the first time this event is emitted. Callbacks registered with this method will automatically be wrapped as a new coroutine when they are called. Returns the original callback for convenience.

Name	Type
name	string
fn	function

Returns: function

Subscribes a callback to be called every time the named event is emitted. Callbacks registered with this method are not automatically wrapped as a coroutine. Returns the original callback for convenience.

Name	Type
name	string
fn	function

Returns: function

Subscribes a callback to be called only the first time this event is emitted. Callbacks registered with this method are not automatically wrapped as a coroutine. Returns the original callback for convenience.

Name	Type
name	string
fn	function

Returns: function

Emits the named event and a variable number of arguments to pass to the event callbacks.

Name	Type	Optional
name	string
...	*	x

Returns: nil

Returns an iterator for all callbacks registered to the named event.

Name	Type
name	string

Returns: function

Returns the number of callbacks registered to the named event.

Name	Type
name	string

Returns: number

Unregisters all instances of the callback from the named event.

Name	Type
name	string

Returns: nil

Unregisters all callbacks from the named event.

Name	Type
name	string

Returns: nil

When called inside of a coroutine, this will yield the coroutine until the specific named event is emitted or until a timeout (in milliseconds) expires. If the coroutine is resumed by the event, then true is returned with any event arguments. If the coroutine is resumed by the timeout's expiration, then false is returned without any other arguments.

Name	Type	Optional	Optional
name	string
timeout	number	x
predicate	function	x

Returns: boolean, ...