Drupal - Autosubmit exposed form in JS

autosubmit.js

(function () {
  Drupal.behaviors.autosubmitForm = {
    attach: function (context) {
      once('form-autosubmit', '[data-autosubmit]', context).forEach(function (el) {
        const parentForm = el.form;

        // Hide submit buttons.
        parentForm.querySelectorAll('input[type="submit"]').forEach(function(input) {
          input.classList.add('visually-hidden');
        });

        // Submit form when input change.
        el.addEventListener('change', function(event) {
          parentForm.submit();
        })
      });
    }
  }
})(Drupal, once);

MyCustomForm.php

<?php

namespace Drupal\mymodule\Form;

use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;

/**
 * Provides a custom form.
 */
class AutosubmitForm extends FormBase {

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'my_custom_form';
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    $form['a_dropdown_list'] = [
      '#type' => 'select',
      '#title' => 'Options',
      '#options' => [
        0 => $this->t('Hello'),
        1 => $this->t('Moto'),        
      ],
      '#attributes' => ['data-autosubmit' => TRUE],
    ];

    $form['actions'] = ['#type' => 'actions'];
    
    // This button will be hidden by JS.
    $form['actions']['submit'] = [
      '#type' => 'submit',
      '#value' => $this->t('Sort'),
    ];

    $form['#attached']['library'][] = 'mymodule/autosubmit';

    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $query = $form_state->getValues();
    $form_state->setRedirect('<current>', [], ['query' => $query]);
  }
}

mymodule.libraries.yml

autosubmit:
  js:
    js/autosubmit.js: {}
  dependencies:
    - core/drupal
    - core/once