65 lines
1.8 KiB
TypeScript
65 lines
1.8 KiB
TypeScript
/**
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* Minimal `EventEmitter` interface that is molded against the Node.js
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* `EventEmitter` interface.
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*/
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declare class EventEmitter<EventTypes extends string | symbol = string | symbol> {
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static prefixed: string | boolean;
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/**
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* Return an array listing the events for which the emitter has registered
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* listeners.
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*/
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eventNames(): Array<EventTypes>;
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/**
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* Return the listeners registered for a given event.
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*/
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listeners(event: EventTypes): Array<EventEmitter.ListenerFn>;
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/**
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* Return the number of listeners listening to a given event.
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*/
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listenerCount(event: EventTypes): number;
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/**
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* Calls each of the listeners registered for a given event.
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*/
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emit(event: EventTypes, ...args: Array<any>): boolean;
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/**
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* Add a listener for a given event.
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*/
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on(event: EventTypes, fn: EventEmitter.ListenerFn, context?: any): this;
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addListener(event: EventTypes, fn: EventEmitter.ListenerFn, context?: any): this;
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/**
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* Add a one-time listener for a given event.
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*/
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once(event: EventTypes, fn: EventEmitter.ListenerFn, context?: any): this;
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/**
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* Remove the listeners of a given event.
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*/
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removeListener(event: EventTypes, fn?: EventEmitter.ListenerFn, context?: any, once?: boolean): this;
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off(event: EventTypes, fn?: EventEmitter.ListenerFn, context?: any, once?: boolean): this;
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/**
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* Remove all listeners, or those of the specified event.
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*/
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removeAllListeners(event?: EventTypes): this;
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}
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declare namespace EventEmitter {
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export interface ListenerFn {
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(...args: Array<any>): void;
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}
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export interface EventEmitterStatic {
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new<EventTypes extends string | symbol = string | symbol>(): EventEmitter<EventTypes>;
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}
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export const EventEmitter: EventEmitterStatic;
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}
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export = EventEmitter;
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