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) {
        $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 &$definitions) {
        if (\Drupal::state()->get('hook_element_plugin_alter:remove_weight', FALSE)) {
            unset($definitions['weight']);
        }
    }

}