Sortable items in Roam's right sidebar

sortable_sidebar.js

let sortableSidebar = null;

(function(d, script) {
  script = d.createElement('script');
  script.type = 'text/javascript';
  script.src = 'https://raw.githack.com/SortableJS/Sortable/master/Sortable.js';
  script.async = true;
  script.onload = function() {
    const observer = new MutationObserver(() => {
      if (document.body.contains(document.getElementById("roam-right-sidebar-content"))) {
        sortableSidebar = sortableSidebar || Sortable.create(
          document.getElementById("roam-right-sidebar-content"), {
            handle: ".bp3-button"
          });
      } else if (sortableSidebar) {
        sortableSidebar.destroy();
        sortableSidebar = null;
      }
    });
    observer.observe(document.querySelector('.roam-body-main'), {
      childList: true,
      subtree: true
    });
  };
  d.getElementsByTagName('head')[0].appendChild(script);
}(document));