Medium: Überschriften-Gliederung auflisten

// List the article headings in the console as a quick outline
(function () {
  const art = document.querySelector('article');
  if (!art) { console.warn('No article found'); return; }
  const heads = art.querySelectorAll('h1, h2, h3');
  if (!heads.length) { console.log('No headings'); return; }
  console.group('Article outline (' + heads.length + ')');
  heads.forEach(function (h) {
    const indent = h.tagName === 'H3' ? '    ' :
                   h.tagName === 'H2' ? '  ' : '';
    console.log(indent + (h.innerText || '').trim());
  });
  console.groupEnd();
})();