Look up when a static audit result over- or under-reports, with a snippet to check it in a real browser

After: what comes back

The first lines of a real run on that input. Nothing here is edited by hand.

unnamed-link: static results over-report. A link with no text is reported even when the browser never exposes it.
  Over-reports when:
    - Links with aria-hidden="true" (often with tabindex="-1"), such as an image tile that sits beside a named text link to the same page.
    - Links inside a container hidden with display:none, the hidden attribute or visibility:hidden.
  Under-reports when:
    - Links whose name is supplied by script or by aria-labelledby pointing at generated text.
    - Links that get their text from CSS content (the browser may or may not count it).
  Trust it: Trust a count of unnamed links only after removing aria-hidden and hidden ones. Trust it fully for links that are visible and focusable.
  Browser check (Puppeteer, page already loaded): Count links in the browser's accessibility tree and list those with an empty name.
    const cdp = await page.createCDPSession();
    await cdp.send('Accessibility.enable');
    const { nodes } = await cdp.send('Accessibility.getFullAXTree');
    const links = nodes.filter(n => n.role?.value === 'link' && !n.ignored);
    const unnamed = links.filter(n => !(n.name?.value || '').trim());
... full output on the tool page