mirror of
https://github.com/denoland/deno.git
synced 2024-11-29 16:30:56 -05:00
9837d324a7
and update to prettier 1.19 Also, update `assert()` and remove not null assertions where possibly in `cli`. Closes #3273
33 lines
801 B
TypeScript
33 lines
801 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 {
|
|
const rnds = crypto.getRandomValues(new Uint8Array(16));
|
|
|
|
rnds[6] = (rnds[6] & 0x0f) | 0x40; // Version 4
|
|
rnds[8] = (rnds[8] & 0x3f) | 0x80; // Variant 10
|
|
|
|
const bits: string[] = [...rnds].map((bit): string => {
|
|
const s: string = bit.toString(16);
|
|
return bit < 0x10 ? "0" + s : s;
|
|
});
|
|
return [
|
|
...bits.slice(0, 4),
|
|
"-",
|
|
...bits.slice(4, 6),
|
|
"-",
|
|
...bits.slice(6, 8),
|
|
"-",
|
|
...bits.slice(8, 10),
|
|
"-",
|
|
...bits.slice(10)
|
|
].join("");
|
|
}
|