/**
 * This module simulates the builtin events.EventEmitter but with the use of redis.
 * This is useful for when companion is running on multiple instances and events need
 * to be distributed across.
 *
 * @param {import('ioredis').Redis} redisClient
 * @param {string} redisPubSubScope
 * @returns
 */
export default function redisEmitter(redisClient: import("ioredis").Redis, redisPubSubScope: string): {
    on: (eventName: string, handler: any) => Promise<void>;
    off: (eventName: string, handler: any) => Promise<void>;
    once: (eventName: string, handler: any) => Promise<void>;
    emit: (eventName: string, ...args: any[]) => Promise<void>;
    removeListener: (eventName: string, handler: any) => Promise<void>;
    removeAllListeners: (eventName: string) => Promise<void>;
};