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