Rename each group from text frame contents. Adobe Illustrator script

GroupNameByTopText.jsx

/*
  The script changes each group name in the active layer/selection to its first TextFrame content
  Discussion: https://community.adobe.com/t5/illustrator-discussions/change-layer-name-by-name-text-in-group/td-p/13224168
  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
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*/

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

// Main function
function main() {
  if (!/illustrator/i.test(app.name)) return;
  if (!documents.length) return;

  var doc = app.activeDocument;
  var lay = doc.activeLayer;
  var arr = selection;
  var prefix = "";
  var suffix = "";

  if (!arr.length || arr.typename === 'TextRange') {
    var endMsg = 'or select groups manually';
    if (!lay.visible) {
      alert('Enable ' + lay.name + ' visibility ' + endMsg, 'Error');
      return;
    } else if (lay.locked) {
      alert('Unlock ' + lay.name + ' ' + endMsg, 'Error');
      return;
    }
    arr = lay.groupItems;
  }

  renameGroups(arr, prefix, suffix);

  // Force name update
  if (parseInt(app.version) <= 23) {
    try {
      var tmp = doc.pathItems.add();
      tmp.remove();
    } catch (err) {}
  }
}

// Get first TextFrame in GroupItem
function getFirstTF(grp) {
  var tf;
  if (grp.textFrames.length) {
    for (var i = 0; i < grp.textFrames.length; i++) {
      if (!isEmpty(grp.textFrames[i].contents)) {
        return grp.textFrames[i];
      }
    }
  }
  if (grp.groupItems.length) {
    for (var i = 0; i < grp.pageItems.length; i++) {
      if (grp.pageItems[i].typename === 'GroupItem') {
        tf = getFirstTF(grp.pageItems[i]);
      }
    }
  }
  return tf;
}

// Check empty string
function isEmpty(str) {
  return str.replace(/\s/g, '').length == 0;
}

// Rename groups to their first TextFrame content
function renameGroups(arr, prefix, suffix) {
  for (var i = 0, len = arr.length; i < len; i++) {
    var item = arr[i];
    if (item.typename === 'GroupItem') {
      var tf = getFirstTF(item);
      var str = '';
      if (tf == undefined) continue;
      str = tf.contents.replace(/(\r\n|\n|\r|\u0003)/gm, ' ').substr(0, 240);
      item.name = prefix + str + suffix;
    }
  }
}

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

• Renames the selected groups or all groups of the active layer.
• Replaces line breaks with spaces.
• Limits the name to 240 characters if there is a lot of content in the text frame.