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