import { Request, Response, NextFunction } from 'express';
export declare class AuthValidator {
    private logger;
    private sessionsCache;
    constructor();
    validateWebSocketAuth(sessionId: string, signature: string): Promise<boolean>;
    authMiddleware(): (req: Request, res: Response, next: NextFunction) => Promise<void>;
    private loadSession;
    clearCache(): void;
}
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