/**
 * @typedef {import('./internal/keys.js').KeyInput} KeyInput
 *
 * @typedef {Object} SignOptions
 * @property {string} alg
 * @property {string | number} [expiresIn]
 * @property {string | number} [notBefore]
 * @property {string} [issuer]
 * @property {string | string[]} [audience]
 * @property {string} [subject]
 * @property {boolean | { size?: number, encoding?: string } | (() => string | Promise<string>)} [jwtId]
 * @property {string} [nonce]
 * @property {string} [typ]                                  Header `typ`. Default `'JWT'`. `'at+jwt'` for RFC 9068.
 * @property {string} [kid]
 * @property {Record<string, unknown>} [header]
 * @property {boolean} [noTimestamp]
 * @property {boolean} [returnMetadata]
 *
 * @typedef {Object} SignResultMeta
 * @property {string} token
 * @property {string} [jti]
 * @property {Date} [expiresAt]
 * @property {Date} [issuedAt]
 * @property {string} alg
 * @property {string} [kid]
 */
/**
 * @param {Record<string, unknown>} payload
 * @param {KeyInput} key
 * @param {SignOptions} options
 * @returns {Promise<string | SignResultMeta>}
 */
export function sign(payload: Record<string, unknown>, key: KeyInput, options: SignOptions): Promise<string | SignResultMeta>;
export type KeyInput = import("./internal/keys.js").KeyInput;
export type SignOptions = {
    alg: string;
    expiresIn?: string | number | undefined;
    notBefore?: string | number | undefined;
    issuer?: string | undefined;
    audience?: string | string[] | undefined;
    subject?: string | undefined;
    jwtId?: boolean | {
        size?: number;
        encoding?: string;
    } | (() => string | Promise<string>) | undefined;
    nonce?: string | undefined;
    /**
     * Header `typ`. Default `'JWT'`. `'at+jwt'` for RFC 9068.
     */
    typ?: string | undefined;
    kid?: string | undefined;
    header?: Record<string, unknown> | undefined;
    noTimestamp?: boolean | undefined;
    returnMetadata?: boolean | undefined;
};
export type SignResultMeta = {
    token: string;
    jti?: string | undefined;
    expiresAt?: Date | undefined;
    issuedAt?: Date | undefined;
    alg: string;
    kid?: string | undefined;
};