livre-1.0.0-beta6/book/tests/modules/book_display_configurable_test/book_display_configurable_test.module

<?php

/**
 * @file
 * A module for testing making node base fields' displays configurable.
 */

use Drupal\Core\Entity\EntityTypeInterface;

/**
 * Implements hook_entity_base_field_info_alter().
 */
function book_display_configurable_test_entity_base_field_info_alter($base_field_definitions, EntityTypeInterface $entity_type): void {
  if ($entity_type->id() == 'node') {
    foreach (['created', 'uid', 'title'] as $field) {
      /** @var \Drupal\Core\Field\BaseFieldDefinition[] $base_field_definitions */
      $base_field_definitions[$field]->setDisplayConfigurable('view', TRUE);
    }
  }
}

/**
 * Implements hook_entity_type_build().
 */
function book_display_configurable_test_entity_type_build(array $entity_types): void {
  // Allow skipping of extra preprocessing for configurable display.
  $entity_types['node']->set('enable_base_field_custom_preprocess_skipping', TRUE);
  $entity_types['node']->set('enable_page_title_template', TRUE);
}