DesignTokenValuePluginBase.php

<?php

declare (strict_types=1);
namespace Drupal\Core\Theme\DesignToken;

use Drupal\Core\Plugin\ConfigurablePluginBase;
use Drupal\Core\Plugin\ContainerFactoryPluginInterface;

/**
 * Base class for design token value plugins.
 */
abstract class DesignTokenValuePluginBase extends ConfigurablePluginBase implements DesignTokenValueInterface, ContainerFactoryPluginInterface {
  
  /**
   * {@inheritdoc}
   */
  public static function prepareConfiguration(mixed $configuration) : array {
    if (!is_array($configuration) || array_is_list($configuration)) {
      $configuration = [
        'value' => $configuration,
      ];
    }
    return $configuration;
  }

}