__loop(
    function, // function
    timer,    // nubmer
  )

  setTimeout(
    function, // function
    timer,    // nubmer
  )

  // Async, every 2s loop this function
  setInterval(function() {
    print(123);
  }, 2000);

  // Sync, every 2s loop this function
  __loop(function() {
    print(123);
  }, 2000);