Utils
EventEmitterable
An EventEmitterable behaves similar to an EventEmitter except provides async access to its methods.
An EventEmitter implements the observer pattern.
Alias for on.
Triggers each listener for
Resolves to the number of listeners for
Resolves to the listeners for
Unregister the
Registers a
Registers a
Unregister all listeners for
Alias for off.
Extended by
Type parameters
| Type parameter |
|---|
T |
Methods
addListener()
Parameters
| Parameter | Type |
|---|---|
event | T |
listener | Listener |
zone? | Zone |
Returns
Promise<EventEmitterable<T>>
Source
utils/events.ts:61emit()
event with the args.
Parameters
| Parameter | Type |
|---|---|
event | T |
zone? | Zone |
…args? | any[] |
Returns
Promise<boolean>
Source
utils/events.ts:36listenerCount()
event.
Parameters
| Parameter | Type |
|---|---|
event? | T |
Returns
Promise<number>
Source
utils/events.ts:41listeners()
event.
Parameters
| Parameter | Type |
|---|---|
event? | T |
Returns
Promise<Listener[]>
Source
utils/events.ts:46off()
listener for event. If listener is unspecified, all listeners are unregistered.
Parameters
| Parameter | Type |
|---|---|
event | T |
listener? | Listener |
zone? | Zone |
Returns
Promise<EventEmitterable<T>>
Source
utils/events.ts:51on()
listener that is called whenever the event occurs until unregistered.
Parameters
| Parameter | Type |
|---|---|
event | T |
listener | Listener |
zone? | Zone |
Returns
Promise<EventEmitterable<T>>
Source
utils/events.ts:26once()
listener that is called the next time event occurs.
Parameters
| Parameter | Type |
|---|---|
event | T |
listener | Listener |
zone? | Zone |
Returns
Promise<EventEmitterable<T>>
Source
utils/events.ts:31removeAllListeners()
event.
Parameters
| Parameter | Type |
|---|---|
event? | T |
Returns
Promise<EventEmitterable<T>>
Source
utils/events.ts:56removeListener()
Parameters
| Parameter | Type |
|---|---|
event | T |
listener | Listener |
zone? | Zone |
Returns
Promise<EventEmitterable<T>>