tsee/lib/types.d.ts

Typed EventEmitter implemented with typed args

/// <reference types="node" />
export declare type Listener = (...args: any[]) => Promise<any> | void;
export declare type DefaultEventMap = {
    [event in string | symbol]: Listener;
};
export interface IEventEmitter<EventMap extends DefaultEventMap = DefaultEventMap> {
    emit<EventKey extends keyof EventMap>(event: EventKey, ...args: Parameters<EventMap[EventKey]>): boolean;
    on<EventKey extends keyof EventMap = string>(event: EventKey, listener: EventMap[EventKey]): this;
    once<EventKey extends keyof EventMap = string>(event: EventKey, listener: EventMap[EventKey]): this;
    addListener<EventKey extends keyof EventMap = string>(event: EventKey, listener: EventMap[EventKey]): this;
    removeListener<EventKey extends keyof EventMap = string>(event: EventKey, listener: EventMap[EventKey]): this;
    prependListener<EventKey extends keyof EventMap = string>(event: EventKey, listener: EventMap[EventKey]): this;
    prependOnceListener<EventKey extends keyof EventMap = string>(event: EventKey, listener: EventMap[EventKey]): this;
    off<EventKey extends keyof EventMap = string>(event: EventKey, listener: EventMap[EventKey]): this;
    removeAllListeners<EventKey extends keyof EventMap = string>(event?: EventKey): this;
    setMaxListeners(n: number): this;
    getMaxListeners(): number;
    listeners<EventKey extends keyof EventMap = string>(event: EventKey): EventMap[EventKey][];
    rawListeners<EventKey extends keyof EventMap = string>(event: EventKey): EventMap[EventKey][];
    eventNames(): Array<string | symbol>;
    listenerCount<EventKey extends keyof EventMap = string>(type: EventKey): number;
}
/** cast type of any event emitter to typed event emitter */
export declare function asTypedEventEmitter<EventMap extends DefaultEventMap, X extends NodeJS.EventEmitter>(x: X): IEventEmitter<EventMap>;