import { JwtService } from '@nestjs/jwt';
import { SocketUser } from './socket-user.type';
export declare class WsAuthService {
    private readonly jwtService;
    constructor(jwtService: JwtService);
    extractTokenFromHandshake(authToken?: unknown, authorizationHeader?: string | string[]): string;
    authenticateToken(token: string): Promise<SocketUser>;
}