title: Restore Node/Element after it has been modified/removed from DOM
body: <p>I am in need of a way to detect if any DOM Node/Element has been removed or modified and instantly restore that element to the state in which it was before.</p>
  
  <p>I tried to "backup" the body node and set the body.innerHTML to its original state every time MutationObserver is fired after the first run but that crashes the browser.</p>
  
  <p>Is there any fast way to restore elements that have been modified or removed?</p>