/// <reference types="node" />
import * as jwt from 'jsonwebtoken';
import { JwtModuleOptions } from './interfaces/jwt-module-options.interface';
export declare class JwtService {
    private readonly options;
    constructor(options: JwtModuleOptions);
    sign(payload: string | Object | Buffer): string;
    verify<T extends object = any>(token: string): T;
    decode(token: string, options: jwt.DecodeOptions): null | {
        [key: string]: any;
    } | string;
}