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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.
/** * Generators and validators for UUIDs for versions v1, v3, v4 and v5. * * Use {@linkcode crypto.randomUUID} for v4 generating v4 UUIDs. * * Based on https://github.com/kelektiv/node-uuid -> https://www.ietf.org/rfc/rfc4122.txt * * Support for RFC4122 version 1, 3, 4, and 5 UUIDs * * This module is browser compatible. * * @module */
export * from "./constants.ts";export * as v1 from "./v1.ts";export * as v3 from "./v3.ts";export * as v4 from "./v4.ts";export * as v5 from "./v5.ts";
/** * The nil UUID is special form of UUID that is specified to have all 128 bits * set to zero. */export const NIL_UUID = "00000000-0000-0000-0000-000000000000";
/** * Check if the passed UUID is the nil UUID. * * @example * ```ts * import { isNil } from "https://deno.land/std@$STD_VERSION/uuid/mod.ts"; * * isNil("00000000-0000-0000-0000-000000000000"); // true * isNil(crypto.randomUUID()); // false * ``` */export function isNil(id: string): boolean {  return id === NIL_UUID;}
/** * Test a string to see if it is a valid UUID. * * @example * ```ts * import { validate } from "https://deno.land/std@$STD_VERSION/uuid/mod.ts"; * * validate("not a UUID"); // false * validate("6ec0bd7f-11c0-43da-975e-2a8ad9ebae0b"); // true * ``` */export function validate(uuid: string): boolean {  return /^(?:[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}|00000000-0000-0000-0000-000000000000)$/i    .test(      uuid,    );}
/** * Detect RFC version of a UUID. * * @example * ```ts * import { version } from "https://deno.land/std@$STD_VERSION/uuid/mod.ts"; * * version("d9428888-122b-11e1-b85c-61cd3cbb3210"); // 1 * version("109156be-c4fb-41ea-b1b4-efe1671c5836"); // 4 * ``` */export function version(uuid: string): number {  if (!validate(uuid)) {    throw new TypeError("Invalid UUID");  }
  return parseInt(uuid[14]!, 16);}