msm-story-viewer

<msm-story-viewer></msm-story-viewer>

<msm-story-viewer>
</msm-story-viewer>

<script>
  const el = document.querySelector("msm-story-viewer");
  el.addEventListener("entered", (e) => {
    console.log(e.detail);
  });

  el.addEventListener("exited", (e) => {
    console.log(e.detail);
  });

</script>