ElementInfoTestHooks.php

<?php

declare (strict_types=1);
namespace Drupal\element_info_test\Hook;

use Drupal\element_info_test\ElementInfoTestNumberBuilder;
use Drupal\Core\Hook\Attribute\Hook;

/**
 * Hook implementations for element_info_test.
 */
class ElementInfoTestHooks {
  
  /**
   * Implements hook_element_info_alter().
   */
  public function elementInfoAlter(array &$info) : void {
    $info['number'] += [
      '#pre_render' => [],
    ];
    /* @see \Drupal\KernelTests\Core\Render\Element\WeightTest::testProcessWeightSelectMax() */
    $info['number']['#pre_render'][] = [
      ElementInfoTestNumberBuilder::class,
      'preRender',
    ];
  }
  
  /**
   * Implements hook_element_plugin_alter().
   */
  public function elementPluginAlter(array &$definitions) : void {
    if (\Drupal::state()->get('hook_element_plugin_alter:remove_weight', FALSE)) {
      unset($definitions['weight']);
    }
  }

}