type UUIDv7toUnsignedInteger = bigint | undefined;
/**
 * @function uuidv7toUnsignedInteger
 * @description Converts a UUIDv7 string or Buffer to its unsigned integer representation.
 *
 * Validates the input as a UUID, checks that it is version 7, and then
 * returns a BigInt representing the complete 128-bit UUID value. If the input is not a valid
 * UUIDv7, returns `undefined`.
 *
 * @param {string | Buffer} uuid - The UUIDv7 as a string or Buffer.
 * @returns {bigint | undefined} The 128-bit unsigned integer representation of the UUIDv7, or `undefined` if invalid.
 *
 * @example
 * // Returns a BigInt
 * uuidv7toUnsignedInteger('018fd8f9-8c00-7a4c-8a47-1a6d4b90f3a1');
 * // 2087074048307655244234234738893601n
 *
 * @example
 * // Returns undefined for invalid UUID
 * uuidv7toUnsignedInteger('not-a-uuid');
 */
declare const uuidv7toUnsignedInteger: (uuid: string | Buffer) => UUIDv7toUnsignedInteger;
export { type UUIDv7toUnsignedInteger, uuidv7toUnsignedInteger };