export interface JWTPayload {
    exp?: number;
    [key: string]: unknown;
}
/**
 * Parses a JWT token and returns its payload
 * @param token - The JWT token to parse
 * @returns The parsed JWT payload or null if invalid
 */
export declare function parseJWT(token?: string): JWTPayload | null;
/**
 * Checks if a JWT token should be renewed (expired or will expire soon)
 * @param token - The JWT token to check
 * @param bufferSeconds - Buffer time in seconds before expiration to consider token as needing renewal
 * @returns true if the token should be renewed (expired or expiring within buffer time), false otherwise
 */
export declare function shouldRenewJWT(token?: string, bufferSeconds?: number): boolean;