/**
 * @param {number} [bytes]  entropy in bytes (default 32 → 256 bits)
 * @returns {string} base64url-encoded random value
 */
export function randomState(bytes?: number): string;
/**
 * @param {number} [bytes]  entropy in bytes (default 32 → 256 bits)
 * @returns {string} base64url-encoded random value
 */
export function randomNonce(bytes?: number): string;