/**
 * V4 UUID Generator
 *
 * Adapted from @orbi/utils:
 *
 * ---------------------------------------------------------------------------------------------------------
 * Fast UUID generator, RFC4122 version 4 compliant.
 *
 * @author Jeff Ward (jcward.com).
 * @license MIT license
 * @link http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/21963136#21963136
 * ---------------------------------------------------------------------------------------------------------
 */
/**
 * `uuid`
 * generates a Version 4 UUID using Jeff Ward's high performance generator.
 *
 * @public
 * @method uuid
 * @returns {string}
 */
export default function uuid(): string;
export declare function isValidUUID(id: string): boolean;