import jwt from 'jsonwebtoken';
/**
 * Represents the response of a JWT validation.
 * @typedef {Object} JWTValidationResponse
 * @property {boolean} isValid - Indicates whether the JWT is valid or not.
 * @property {jwt.JwtPayload} [decodedToken] - The decoded JWT payload if the JWT is valid.
 * @property {boolean} [isExpired] - Indicates whether the JWT is expired or not, only present if isValid is false.
 */
type JWTValidationResponse = {
    isValid: true;
    decodedToken: jwt.JwtPayload;
} | {
    isValid: false;
    isExpired?: boolean;
};
/**
 * Represents a JSON Web Token (JWT) utility class.
 */
export default class JWT {
    /**
     * The secret key used for generating and verifying tokens.
     * @type {string}
     */
    private readonly tokenSecret;
    /**
     * The default expiration time for a cache entry.
     * @type {string}
     */
    private readonly defaultExpiration?;
    /**
     * Constructs a new instance of the class.
     * @param {string} tokenSecret - The secret used to sign the tokens.
     * @param {string} [defaultExpiration] - The default expiration time for the tokens.
     * @returns None
     */
    constructor(tokenSecret: string, defaultExpiration?: string);
    /**
     * Creates a JSON Web Token (JWT) using the provided data and options.
     * @param {object} data - The data to be included in the token payload.
     * @param {string} [expiration] - The expiration time for the token. If not provided, the default expiration time will be used.
     * @param {string} [overrideToken] - An optional token secret to override the default token secret.
     * @param {any} [opts] - Additional options to be passed to the jwt.sign() function.
     * @returns {string} - The generated JWT.
     */
    createToken(data: object, expiration?: string, overrideToken?: string, opts?: any): string;
    /**
     * Validates a JSON Web Token (JWT) and returns the validation response.
     * @param {string} token - The JWT to validate.
     * @returns {JWTValidationResponse} - The validation response object.
     */
    validateToken(token: string): JWTValidationResponse;
}
export {};