30-seconds-of-code/snippets/UUIDGeneratorNode.md

UUIDGenerator

Generates a UUID in Node.JS.

Use crypto API to generate a UUID, compliant with RFC4122 version 4.

const crypto = require("crypto");

const UUIDGenerator = () =>
  ([1e7] + -1e3 + -4e3 + -8e3 + -1e11).replace(/[018]/g, c =>
    (c ^ (crypto.randomBytes(1)[0] & (15 >> (c / 4)))).toString(16)
  );

UUIDGenerator(); // '79c7c136-60ee-40a2-beb2-856f1feabefc'