import { PricingContext } from '../configuration/PricingContext';
import { FeatureStatus } from './pricing-evaluator';
/**
 * Utility class for handling JSON Web Tokens related to pricing.
 */
export declare class PricingJwtUtils {
    private static context;
    /**
     * Decodes a Pricing JSON Web Token.
     *
     * @param token - The JWT to decode.
     * @returns The decoded token as a Record<string, any.
     * @throws {PricingTokenError} If the token is not found or expired.
     */
    static decodeToken(token: string | undefined): Record<string, any>;
    /**
     * Encodes a set of claims into a JSON Web Token (JWT).
     *
     * @param claims - The claims to encode into the token.
     * @returns The encoded JWT.
     * @throws {PricingTokenError} If required claims are missing.
     */
    static encodeToken(claims: Record<string, any>): string;
    /**
     * Extracts the evaluated features from a Pricing JSON Web Token (JWT).
     *
     * @param token - The JWT to extract features from.
     * @returns The features as a Record<string, {@link FeatureStatus}>.
     */
    static getFeaturesFromJwtToken(token: string): Record<string, FeatureStatus>;
    /**
     * Extracts the subject from a Pricing JSON Web Token (JWT).
     *
     * @param token - The JWT to extract the subject from.
     * @returns The subject as a string.
     */
    static getSubjectFromJwtToken(token: string): string;
    /**
     * Updates the features in a Pricing JSON Web Token (JWT).
     *
     * @param oldToken - The JWT to update.
     * @param newFeatureStatuses - A *Record<string, {@link FeatureStatus}>* showcasing the new features evaluation to update in the token.
     * @returns The updated JWT.
     */
    static updateTokenFeatures(oldToken: string, newFeatureStatuses: Record<string, FeatureStatus>): string;
    /**
     * Updates a specific feature in a Pricing JSON Web Token (JWT).
     *
     * @param oldToken - The JWT to update.
     * @param newFeatureStatuses - A *Record<string, {@link FeatureStatus}>* showcasing the new features evaluation to update in the token.
     * @returns The updated JWT.
     */
    static updateEvalOfTokenFeature(oldToken: string, featureToChangeEval: string, newEval: string): string;
    /**
     * Configures the {@links PricingContext} that will be used to perform the JWT operations.
     *
     * @param context - The {@link PricingContext} to set.
     */
    static setContext(context: PricingContext): void;
    /**
     * Checks if a JSON Web Token is expired.
     *
     * @param token - The JWT to check.
     * @returns *true* if the token is expired, *false* otherwise.
     */
    private static isJwtExpired;
}