miragejs/lib/utils/uuid.js

A client-side server to help you build, test and demo your JavaScript app

/**
  UUID generator

  @hide
*/
export default function () {
  return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, function (c) {
    let r = (Math.random() * 16) | 0;
    let v = c === "x" ? r : (r & 0x3) | 0x8;
    return v.toString(16);
  });
}