code: function listenRemoved(el, cb) {  // {{{2
  /*
   * Element wrappers that has `wrap._removed = function() {...}` method defined must be removed by calling `wrap.remove()`
   */
  
    while (el) {
      if (el.ose && el.ose._removed) {
        if ('_on_removed' in el.ose) {
          el.ose._on_removed.push(cb);
          return;
        }
  
        el.ose._on_removed = [cb];
        return;
      }
  
      el = el.parentNode;
    }
  
    setTimeout(function() {
      if (! el.parentNode) {
        throw O.log.error('Can\'t listen to "removed" event on orphaned child');
      }
  
      listenRemoved(el, cb);
    });
  }
docs: Private {{{1