import * as Soap from "@soapjs/soap";
import { MfaConfig } from "../types";
export declare class MfaService<TContext = unknown, TUser = unknown> {
    private config;
    private logger;
    constructor(config: MfaConfig, logger: Soap.Logger);
    checkMfa(user: TUser, context: TContext): Promise<void>;
    protected lockMfaOnFailure(user: TUser): void;
    protected getMfaAttempts(user: TUser): Promise<number>;
    protected incrementMfaAttempts(user: TUser): void;
    protected resetMfaAttempts(user: TUser): void;
}