/**
 * @param {KeyInput} key
 * @param {string} alg
 * @param {'sign' | 'verify'} direction
 * @returns {Promise<import('node:crypto').KeyObject>}
 */
export function normalizeKey(key: KeyInput, alg: string, direction: "sign" | "verify"): Promise<any>;
export type KeyInput = any | Buffer | Uint8Array | string | Record<string, unknown>;