Tiny php script to show all available JFormFields in Joomla! 3

all.php

<?php
/**
 * @package       all
 * @author        Alexandre ELISÉ <contact@alexandre-elise.fr>
 * @link          https://alexandre-elise.fr
 * @copyright (c) 2020 . Alexandre ELISÉ . Tous droits réservés.
 * @license       GPL-2.0-and-later GNU General Public License v2.0 or later
 * Created Date : 19/07/2020
 * Created Time : 16:04
 */

use Joomla\CMS\Filesystem\File;
use Joomla\CMS\Filesystem\Folder;
use Joomla\CMS\Form\Form;
use Joomla\CMS\Form\FormHelper;

defined('_JEXEC') or die;

$fields_path = JPATH_LIBRARIES . '/joomla/form/fields';
FormHelper::addFieldPath($fields_path);
$exclude = ['predefinedlist.php', 'repeatable.php'];
$files = Folder::files($fields_path, '.php', false, false, $exclude);
$xml = <<<XML
<?xml version="1.0" encoding="UTF-8" ?>
<form name="all">
<fieldset name="all">
<fields name="all" />
</fieldset>
</form>
XML;
$form = Form::getInstance('all', $xml);
if (empty($files)) {
   echo 'No fields found<br>';
   return;
}
foreach ($files as $file)
{
	try
	{
		$type  = File::stripExt($file);
		$field = new SimpleXMLElement('<field name="name-of-'.$type.'" type="'.$type.'" label="Label of '.$type.'" description="Description of '.$type.'" />');
		$form->setField($field, 'all', true, 'all');
	}
	catch (Exception $err)
	{
		echo $err->getMessage() . ' ' . $err->getFile() . ' ' . $err->getLine();
		continue;
	}
}
echo $form->renderFieldset('all');