Create a UUID using window.performance or Date.now

make-uuid.ts

/**
 * Create a UUID
 * @see http://stackoverflow.com/a/8809472/188246
 *
 * @return {string}
 */
export default function makeUuid(): string {
  // your favourite guid generation function could go here
  // ex: http://stackoverflow.com/a/8809472/188246
  let d = new Date().getTime() + (window.performance || Date).now();

  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
    const r = (d + Math.random() * 16) % 16 | 0;
    d = Math.floor(d / 16);

    return (c === 'x' ? r : (r & 0x3 | 0x8)).toString(16);
  });
}