element_info_test.module

<?php


/**
 * @file
 * Element info test.
 */

use Drupal\element_info_test\ElementInfoTestNumberBuilder;

/**
 * Implements hook_element_info_alter().
 */
function element_info_test_element_info_alter(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().
 */
function element_info_test_element_plugin_alter(array &$definitions) {
  if (\Drupal::state()->get('hook_element_plugin_alter:remove_weight', FALSE)) {
    unset($definitions['weight']);
  }
}