declare class WebSocketManager {
    private static instance;
    private sockets;
    private constructor();
    static getInstance(): WebSocketManager;
    getSocket(userId: string): Promise<WebSocket>;
    sendMessage(userId: string, event: string, payload: any, role?: string): Promise<void>;
    closeSocket(userId: string): void;
}
export declare const wsManager: WebSocketManager;
export {};
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