import { type JWTAlgorithm, type JWTConfig, type JWTPayload } from './types.ts';
/** Import a CryptoKey from JWT configuration for signature verification. */
export declare function importJWTKey(config: JWTConfig): Promise<CryptoKey>;
/** Sign a JWT payload. Primarily for testing. */
export declare function signJWT(payload: JWTPayload, secret: string, algorithm?: JWTAlgorithm): Promise<string>;
/** Verify a JWT token and return its decoded payload. */
export declare function verifyJWT(token: string, key: CryptoKey, config: JWTConfig): Promise<JWTPayload>;