import { ClusterEngine, type Message } from "./engine";
import { type ServerOptions } from "engine.io";
interface PrimaryWithRedisOptions {
    /**
     * The prefix for the Redis Pub/Sub channels.
     *
     * @default "engine.io"
     */
    channelPrefix?: string;
}
export declare function setupPrimaryWithRedis(pubClient: any, subClient: any, opts?: PrimaryWithRedisOptions): void;
interface RedisEngineOptions extends ServerOptions {
    /**
     * The prefix for the Redis Pub/Sub channels.
     *
     * @default "engine.io"
     */
    channelPrefix?: string;
}
export declare class RedisEngine extends ClusterEngine {
    private readonly _pubClient;
    private readonly _channelPrefix;
    constructor(pubClient: any, subClient: any, opts?: RedisEngineOptions);
    publishMessage(message: Message & {
        _source?: string;
    }): void;
}
export {};