export function newGuid(): string {
  return 'xxxxxxxx-xxxx-xxxx-yxxx-xxxxxxxxxxxx'
    .replace(/[xy]/g, function (c) {
      const r = Math.random() * 16 | 0,
        v = c === 'x' ? r : (r & 0x3 | 0x8);
      return v.toString(16);
    });
}