<script src="../dist/ajanuw-duration.js"></script>
<script>
   const { Duration } = AjanuwDuration;
   const d = new Duration({ days: 1 });
   console.log(d.inHours); // 24

   let d2 = d.add(new Duration({ hours: 3, seconds: 10 }));
   console.log(d2.toString()); /// 27:00:10.000000
</script>