Use own favicon fetcher

lib/favicon.js

@@ -0,0 +1,57 @@
+import fetch from 'node-fetch';
+import AbortController from 'abort-controller';
+import { parse } from 'node-html-parser';
+
+//Node.js >=14.17 only
+//const AbortController = globalThis.AbortController || (await import('abort-controller'));
+
+const filterLinks = links => {
+  const attrs = ['rel', 'href', 'sizes'];
+  const filterAttrs = link =>
+    attrs.reduce((total, attr) => ({ ...total, [attr]: link.getAttribute(attr) }), {});
+  return [...links]
+    .filter(link => link.getAttribute('href') && link.getAttribute('rel').includes('icon'))
+    .map(filterAttrs);
+};
+
+const updateAttrs = url => icons => {
+  const getOrigin = url => new URL(url).origin;
+  return icons.map(({ sizes, href, rel }) => ({
+    size: parseInt(sizes?.split('x')[0]) || undefined,
+    href: href[0] === '/' ? `${getOrigin(url)}${href}` : href,
+    rel,
+  }));
+};
+
+const fetchLinks = url => {
+  const controller = new AbortController();
+  const timeout = setTimeout(() => {
+    // eslint-disable-next-line no-console
+    console.log('Aborting!');
+    controller.abort();
+  }, 1000);
+
+  try {
+    return fetch(url, { signal: controller.signal })
+      .then(res => res.text())
+      .then(str => parse(str))
+      .then(html => html.querySelectorAll('head link'));
+  } catch (e) {
+    // eslint-disable-next-line no-console
+    console.log(`Could not fetch favicon for url ${url}`, e);
+  } finally {
+    clearTimeout(timeout);
+  }
+};
+
+const getIcons = url => fetchLinks(url).then(filterLinks).then(updateAttrs(url));
+
+export default async domain => {
+  const icons = await getIcons(`https://${domain}`);
+
+  if (icons.length && icons.length > 0) {
+    return icons[0]?.href;
+  }
+
+  return null;
+};