import * as jwt from 'jsonwebtoken';
import { ConfigService } from "@nestjs/config";
import { PgPersistenceService, UserInfoService } from "../../persistence";
export declare class WebsocketsJwtValidateService {
    private readonly config;
    private readonly persistence;
    constructor(config: ConfigService, persistence: PgPersistenceService);
    validateFromHeaders(headers: any): string | jwt.JwtPayload;
    validateAndReturnUserInfoService(headers: any): UserInfoService;
}