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denoland-deno/uuid/v4.ts
2019-07-03 11:13:22 -04:00

19 lines
530 B
TypeScript

// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
const UUID_RE = new RegExp(
"^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$",
"i"
);
export function validate(id: string): boolean {
return UUID_RE.test(id);
}
export default function generate(): string {
return "00000000-0000-4000-8000-000000000000".replace(
/[0]/g,
(): string =>
// random integer from 0 to 15 as a hex digit.
(crypto.getRandomValues(new Uint8Array(1))[0] % 16).toString(16)
);
}