hexo-theme-stellar/layout/_partial/comments/utterances/script.ejs

<script type="module">
  const el = document.querySelector("#comments #utterances");
  util.viewportLazyload(el, load_utterances, <%= theme.comments.lazyload ?? false %>);

  function load_utterances() {
    if (!el) return;
    try {
      el.innerHTML = '';
    } catch (error) {
      console.error(error);
    }
    const script = document.createElement('script');
    script.src = 'https://utteranc.es/client.js';
    script.async = true;
    for (const key of Object.keys(el.attributes)) {
      const attr = el.attributes[key];
      if (['class', 'id'].includes(attr.name) === false) {
        script.setAttribute(attr.name, attr.value);
      }
    }
    el.appendChild(script);
  }
</script>