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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.import { bytesToUuid } from "./_common.ts";
const UUID_RE =  /^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
/** * Validates the UUID v4. * @param id UUID value. */export function validate(id: string): boolean {  return UUID_RE.test(id);}
/** Generates a RFC4122 v4 UUID (pseudo-randomly-based) */export function generate(): string {  const rnds = crypto.getRandomValues(new Uint8Array(16));
  rnds[6] = (rnds[6] & 0x0f) | 0x40; // Version 4  rnds[8] = (rnds[8] & 0x3f) | 0x80; // Variant 10
  return bytesToUuid(rnds);}