Function classify

scripts/fix-links.mjs:244–274

(row)

}

function classify(row) {
  const orig = safeUrl(row.original_url);
  const fin = safeUrl(row.resolved_url);
  const status = row.status_code;
  const expl = row.explanation;

  if (!orig) return { class: CLASS.UNKNOWN, reason: 'malformed original URL' };

  if (fin && isParked(fin.href)) {
    return { class: CLASS.PARKED, reason: `final URL on parked host: ${fin.hostname}` };
  }

  if (status === 'DNS' || /DNS lookup failed/i.test(expl)) {
    return { class: CLASS.DEAD_DNS, reason: 'host does not resolve in DNS' };
  }

  if (status === '404' || /Not found/i.test(expl)) {
    return { class: CLASS.NOT_FOUND, reason: '404' };
  }

  if (status === '403' || status === '429' || status === '999' || status === '525' || status === '522' || /Forbidden|HTTP 999|HTTP 5/.test(expl) || /Connection failed/i.test(expl)) {
    return { class: CLASS.THROTTLED, reason: `${status} ${expl}` };
  }

  if (status === '200' || /Redirects to final URL/i.test(expl)) {
    if (!fin || row.original_url === row.resolved_url) return { class: CLASS.OK, reason: '' };
    return classifyRedirect(orig, fin);
  }

  return { class: CLASS.UNKNOWN, reason: `${status} ${expl}` };
}

function classifyRedirect(orig, fin) {
  // Strip ALL query params before comparing — redirect-added params are almost