Add favicon to links

add_favicons.js

const addFavicons = () => {
  let filtered = Array.prototype.filter.call(document.querySelectorAll('.roam-body-main a'), a => {
    return a.hostname && a.hostname !== document.location.hostname;
  });
  Array.prototype.forEach.call(filtered, a => {
    if (a.text == "*") {
      a.style.background = `url(https://www.google.com/s2/favicons?sz=16&domain=${a.hostname}) right center no-repeat`;
      a.style.paddingRight = "18px";
    } else {
      a.style.background = `url(https://www.google.com/s2/favicons?sz=16&domain=${a.hostname}) left center no-repeat`;
      a.style.paddingLeft = "20px";
    }
  });
};

const observer = new MutationObserver(addFavicons);
observer.observe(document.querySelector('.roam-body-main'), {
  attributes: true,
  childList: true,
  subtree: true
});