Move selected objects from groups to top of layer. Adobe Illustrator script

MoveFromGroupsToLayers.jsx

/*
  Moves selected objects from groups to top of layer
  Author: Sergey Osokin, email: hi@sergosokin.ru
  Check my other scripts: https://github.com/creold
  
  Donate (optional):
  If you find this script helpful, you can buy me a coffee
  - via Buymeacoffee: https://www.buymeacoffee.com/aiscripts
  - via Donatty https://donatty.com/sergosokin
  - via DonatePay https://new.donatepay.ru/en/@osokin
  - via YooMoney https://yoomoney.ru/to/410011149615582
*/

//@target illustrator
app.preferences.setBooleanPreference('ShowExternalJSXWarning', false); // Fix drag and drop a .jsx file

// Main function
function main() {
  if (!documents.length) {
    alert('No documents\nOpen a document and try again', 'Script error');
    return;
  }

  if (!selection.length || selection.typename === 'TextRange') {
    alert('Nothing selected\nPlease, select at least one object', 'Script error');
    return;
  }

  var doc = activeDocument,
      sel = doc.selection,
      len = sel.length,
      prnt, lay;

  for (var i = 0; i < len; i++) {
    prnt = sel[i].parent;
    lay = getTopLayer(sel[i]);
    if (prnt.typename === "GroupItem" && prnt.parent.typename !== "PluginItem") {
      sel[i].move(lay, ElementPlacement.PLACEATBEGINNING);
    }
  }
}

// Get top-level parent layer
function getTopLayer(item) {
  if (item.parent.typename === 'Document') return item;
  else return getTopLayer(item.parent);
}

// Run script
try {
  main();
} catch (err) {}