import WebSocket from 'ws';
export declare class RoomManager {
    private rooms;
    constructor();
    /**
     * Adds a user to a specific room.
     * Creates the room if it doesn't exist.
     */
    joinRoom(roomId: string, username: string, socket: WebSocket): void;
    renameUser(roomId: string, username: string, newUsername: string, socket: WebSocket): boolean;
    /**
     * Removes a user from a room.
     * Cleans up the room if it becomes empty.
     */
    leaveRoom(roomId: string, username: string): boolean;
    /**
     * Checks if a room exists.
     */
    hasRoom(roomId: string): boolean;
    /**
     * Sends a message to all users in a specific room.
     */
    broadcast(roomId: string, message: string): void;
}
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