CommentDisplayConfigurableTestHooks.php

<?php

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

use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Hook\Attribute\Hook;

/**
 * Hook implementations for comment_display_configurable_test.
 */
class CommentDisplayConfigurableTestHooks {
  
  /**
   * Implements hook_entity_base_field_info_alter().
   */
  public function entityBaseFieldInfoAlter(&$base_field_definitions, EntityTypeInterface $entity_type) : void {
    if ($entity_type->id() == 'comment') {
      foreach ([
        'created',
        'uid',
        'pid',
        'subject',
      ] as $field) {
        /** @var \Drupal\Core\Field\BaseFieldDefinition[] $base_field_definitions */
        $base_field_definitions[$field]->setDisplayConfigurable('view', TRUE);
      }
    }
  }
  
  /**
   * Implements hook_entity_type_build().
   */
  public function entityTypeBuild(array &$entity_types) : void {
    // Allow skipping of extra preprocessing for configurable display.
    $entity_types['comment']->set('enable_base_field_custom_preprocess_skipping', TRUE);
  }

}