import { type PossibleBytes } from "./bytes.js";
import type { Data } from "./data.js";
import type { AnyFunction } from "./function.js";
/**
 * Encode a JWT and return the string token.
 * - Currently only supports HMAC SHA-512 signing.
 *
 * @throws ValueError If the input parameters, e.g. `secret` or `issuer`, are invalid.
 */
export declare function encodeToken(claims: Data, secret: PossibleBytes): Promise<string>;
/** Parts that make up a JSON Web Token. */
export type TokenData = {
    header: string;
    payload: string;
    signature: string;
    headerData: Data;
    payloadData: Data;
    signatureBytes: Uint8Array;
};
/**
 * Split a JSON Web Token into its header, payload, and signature, and decode and parse the JSON.
 */
export declare function splitToken(token: unknown): TokenData;
export declare function _splitToken(caller: AnyFunction, token: unknown): TokenData;
/**
 * Decode a JWT, verify it, and return the full payload data.
 * - Currently only supports HMAC SHA-512 signing.
 *
 * @throws ValueError If the input parameters, e.g. `secret` or `issuer`, are invalid.
 * @throws RequestError If the token is invalid or malformed.
 * @throws UnauthorizedError If the token signature is incorrect, token is expired or not issued yet.
 */
export declare function verifyToken(token: unknown, secret: PossibleBytes): Promise<Data>;