Create a new GUID or UUID in TypeScript

guid.ts

/**
 * Create a GUID
 * @see https://stackoverflow.com/a/2117523/319711
 *
 * @returns RFC4122 version 4 compliant GUID
 */
export const uuid4 = () => {
  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
    // tslint:disable-next-line:no-bitwise
    const r = (Math.random() * 16) | 0;
    // tslint:disable-next-line:no-bitwise
    const v = c === 'x' ? r : (r & 0x3) | 0x8;
    return v.toString(16);
  });
};