// IMPURE
export const genUUID = (len=16) => {
  const arr = crypto.getRandomValues(new Uint8Array(len));
  let result = "";
  for (let i=0; i<len; i++) {
    const unsignedByte = arr[i];
    if (unsignedByte < 16) {
      result += '0' + unsignedByte.toString(16);
    } else {
      result += unsignedByte.toString(16);
    }
  }
  return result;
};

console.log(genUUID())