import * as v1 from "./v1";
import * as v4 from "./v4";
import * as v5 from "./v5";
export declare const NIL_UUID = "00000000-0000-0000-0000-000000000000";
/**
 * Check if the passed UUID is the nil UUID.
 *
 * ```js
 * import { isNil } from "./mod.ts";
 *
 * isNil("00000000-0000-0000-0000-000000000000") // true
 * isNil(crypto.randomUUID()) // false
 * ```
 */
export declare function isNil(id: string): boolean;
/**
 * Test a string to see if it is a valid UUID.
 *
 * ```js
 * import { validate } from "./mod.ts"
 *
 * validate("not a UUID") // false
 * validate("6ec0bd7f-11c0-43da-975e-2a8ad9ebae0b") // true
 * ```
 */
export declare function validate(uuid: string): boolean;
/**
 * Detect RFC version of a UUID.
 *
 * ```js
 * import { version } from "./mod.ts"
 *
 * version("d9428888-122b-11e1-b85c-61cd3cbb3210") // 1
 * version("109156be-c4fb-41ea-b1b4-efe1671c5836") // 4
 * ```
 */
export declare function version(uuid: string): number;
export { v1, v4, v5 };