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An EventEmitterable behaves similar to an EventEmitter except provides async access to its methods. An EventEmitter implements the observer pattern.

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Extended by

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Type parameters

Type parameter
T

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Methods

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addListener()

addListener(
   event, 
   listener, 
zone?): Promise<EventEmitterable<T>>
Alias for on.

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Parameters

ParameterType
eventT
listenerListener
zone?Zone

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Returns

Promise<EventEmitterable<T>>

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Source

utils/events.ts:61

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emit()

emit(
   event, 
   zone?, ...
args?): Promise<boolean>
Triggers each listener for event with the args.

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Parameters

ParameterType
eventT
zone?Zone
…args?any[]

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Returns

Promise<boolean>

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Source

utils/events.ts:36

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listenerCount()

listenerCount(event?): Promise<number>
Resolves to the number of listeners for event.

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Parameters

ParameterType
event?T

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Returns

Promise<number>

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Source

utils/events.ts:41

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listeners()

listeners(event?): Promise<Listener[]>
Resolves to the listeners for event.

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Parameters

ParameterType
event?T

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Returns

Promise<Listener[]>

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Source

utils/events.ts:46

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off()

off(
   event, 
   listener?, 
zone?): Promise<EventEmitterable<T>>
Unregister the listener for event. If listener is unspecified, all listeners are unregistered.

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Parameters

ParameterType
eventT
listener?Listener
zone?Zone

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Returns

Promise<EventEmitterable<T>>

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Source

utils/events.ts:51

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on()

on(
   event, 
   listener, 
zone?): Promise<EventEmitterable<T>>
Registers a listener that is called whenever the event occurs until unregistered.

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Parameters

ParameterType
eventT
listenerListener
zone?Zone

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Returns

Promise<EventEmitterable<T>>

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Source

utils/events.ts:26

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once()

once(
   event, 
   listener, 
zone?): Promise<EventEmitterable<T>>
Registers a listener that is called the next time event occurs.

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Parameters

ParameterType
eventT
listenerListener
zone?Zone

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Returns

Promise<EventEmitterable<T>>

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Source

utils/events.ts:31

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removeAllListeners()

removeAllListeners(event?): Promise<EventEmitterable<T>>
Unregister all listeners for event.

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Parameters

ParameterType
event?T

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Returns

Promise<EventEmitterable<T>>

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Source

utils/events.ts:56

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removeListener()

removeListener(
   event, 
   listener, 
zone?): Promise<EventEmitterable<T>>
Alias for off.

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Parameters

ParameterType
eventT
listenerListener
zone?Zone

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Returns

Promise<EventEmitterable<T>>

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Source

utils/events.ts:66
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