NodeNoDefaultAuthorHooks.php

<?php

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

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

/**
 * Hook implementations for node_no_default_author.
 */
class NodeNoDefaultAuthorHooks {
    
    /**
     * Implements hook_entity_base_field_info_alter().
     */
    public function entityBaseFieldInfoAlter(&$fields, EntityTypeInterface $entity_type) : void {
        if ($entity_type->id() === 'node') {
            $fields['uid']->setDefaultValueCallback(static::class . '::noDefaultAuthor');
        }
    }
    
    /**
     * An empty callback to set for the default value callback of uid.
     */
    public static function noDefaultAuthor() : void {
    }

}