typia/src/internal/_randomFormatUuid.ts

Superfast runtime validators with only one line

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