type UUIDv7withURNWrapper = string | undefined;
/**
 * @function uuidv7withURNWrapper
 * @description Wraps a valid UUIDv7 string or Buffer in a URN (Uniform Resource Name) as per RFC 4122.
 *
 * Validates the input as a UUID, checks that it is version 7, and then
 * returns the UUID wrapped in a URN string (`urn:uuid:<uuid>`). If the input
 * is not a valid UUIDv7, returns `undefined`.
 *
 * @param {string | Buffer} uuid - The UUIDv7 to wrap, as a string or Buffer.
 * @returns {string | undefined} The URN-wrapped UUIDv7 string if valid, otherwise `undefined`.
 *
 * @example
 * // Valid UUIDv7 string
 * uuidv7withURNWrapper('01890b27-ccf7-7def-b6c2-3b8e6e3c8e5f');
 * // 'urn:uuid:01890b27-ccf7-7def-b6c2-3b8e6e3c8e5f'
 *
 * @example
 * // Invalid UUID version
 * uuidv7withURNWrapper('01890b27-ccf7-4def-b6c2-3b8e6e3c8e5f');
 * // undefined
 *
 * @example
 * // Buffer input
 * const buf = Buffer.from('01890b27ccf77defb6c23b8e6e3c8e5f', 'hex');
 * uuidv7withURNWrapper(buf);
 * // 'urn:uuid:01890b27-ccf7-7def-b6c2-3b8e6e3c8e5f'
 */
declare const uuidv7withURNWrapper: (uuid: string | Buffer) => UUIDv7withURNWrapper;
export { type UUIDv7withURNWrapper, uuidv7withURNWrapper };