import type { SSEMessage } from '../../sseTypes.js';
import type { SSERoomAdapter, SSERoomMessageHandler } from '../types.js';
/**
 * Default no-op adapter for single-node deployments.
 *
 * This adapter does nothing - all room operations are local only.
 * Use this (the default) when running a single server instance.
 *
 * For multi-node deployments, use RedisAdapter or a custom adapter.
 */
export declare class InMemoryAdapter implements SSERoomAdapter {
    connect(): Promise<void>;
    disconnect(): Promise<void>;
    subscribe(_room: string): Promise<void>;
    unsubscribe(_room: string): Promise<void>;
    publish(_room: string, _message: SSEMessage, _metadata?: Record<string, unknown>): Promise<void>;
    onMessage(_handler: SSERoomMessageHandler): void;
}