Generate UUID (Node.js)

JavaScript, Node, Random · Mar 14, 2022

Generates a UUID in Node.JS.

Use crypto.randomBytes() to generate a UUID, compliant with RFC4122 version 4.
Use Number.prototype.toString() to convert it to a proper UUID (hexadecimal string).
crypto.randomUUID() provides similar functionality.

const crypto = require('crypto');

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

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

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