Class: EventEmitter\

Polyv Wx Live Player Component

Polyv Wx Live Player Component / modules/super-miniprogram/tool/eventEmitter / EventEmitter

Class: EventEmitter<EventTypes, Context>

Minimal EventEmitter interface that is molded against the Node.js EventEmitter interface.

Type Parameters

EventTypes

EventTypes extends ValidEventTypes = string | symbol

Context

Context extends any = any

Constructors

Constructor

new EventEmitter<EventTypes, Context>(): EventEmitter<EventTypes, Context>

Returns

EventEmitter<EventTypes, Context>

Properties

prefixed

static prefixed: string | boolean

Methods

addListener()

addListener<T>(event, fn, context?): this

Type Parameters

T

T extends string | symbol

Parameters

event

T

fn

EventListener<EventTypes, T>

context?

Context

Returns

this

emit()

emit<T>(event, ...args): boolean

Calls each of the listeners registered for a given event.

Type Parameters

T

T extends string | symbol

Parameters

event

T

args

...Parameters<EventListener<EventTypes, T>>

Returns

boolean

eventNames()

eventNames(): EventNames<EventTypes>[]

Return an array listing the events for which the emitter has registered listeners.

Returns

EventNames<EventTypes>[]

listenerCount()

listenerCount(event): number

Return the number of listeners listening to a given event.

Parameters

event

EventNames<EventTypes>

Returns

number

listeners()

listeners<T>(event): EventListener<EventTypes, T>[]

Return the listeners registered for a given event.

Type Parameters

T

T extends string | symbol

Parameters

event

T

Returns

EventListener<EventTypes, T>[]

off()

off<T>(event, fn?, context?, once?): this

Type Parameters

T

T extends string | symbol

Parameters

event

T

fn?

EventListener<EventTypes, T>

context?

Context

once?

boolean

Returns

this

on()

on<T>(event, fn, context?): this

Add a listener for a given event.

Type Parameters

T

T extends string | symbol

Parameters

event

T

fn

EventListener<EventTypes, T>

context?

Context

Returns

this

once()

once<T>(event, fn, context?): this

Add a one-time listener for a given event.

Type Parameters

T

T extends string | symbol

Parameters

event

T

fn

EventListener<EventTypes, T>

context?

Context

Returns

this

removeAllListeners()

removeAllListeners(event?): this

Remove all listeners, or those of the specified event.

Parameters

event?

EventNames<EventTypes>

Returns

this

removeListener()

removeListener<T>(event, fn?, context?, once?): this

Remove the listeners of a given event.

Type Parameters

T

T extends string | symbol

Parameters

event

T

fn?

EventListener<EventTypes, T>

context?

Context

once?

boolean

Returns

this