Readable Preact

dangerouslySetInnerHTML.js

if (
  (!oldHtml || newHtml.__html != oldHtml.__html) &&
  newHtml.__html !== dom.innerHTML
) {
  dom.innerHTML = (newHtml && newHtml.__html) || "";
}

readableDangerouslySetInnerHTML.js

// while oldHtml not null
if (!newHtml) {
  dom.innerHTML = "";
}
// while newHtml not null
if (newHtml.__html != oldHtml?.__html) {
  // fallback into real equality check
  if (newHtml.__html !== dom.innerHTML) {
    dom.innerHTML = newHtml.__html;
  }
}