30-seconds-of-code/snippets/UUID-generator.md

UUID generator

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

const uuid = _ =>
  ( [1e7]+-1e3+-4e3+-8e3+-1e11 ).replace( /[018]/g, c =>
    (c ^ crypto.getRandomValues(new Uint8Array(1))[0] & 15 >> c / 4).toString(16)
  );
// uuid() -> '7982fcfe-5721-4632-bede-6000885be57d'