/**
 * 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.
 */
export declare function uuid(): string;