NullTestImageEffect.php

<?php

declare (strict_types=1);
namespace Drupal\image_module_test\Plugin\ImageEffect;

use Drupal\Core\Image\ImageInterface;
use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\image\Attribute\ImageEffect;
use Drupal\image\ImageEffectBase;

/**
 * Performs no operation on an image resource.
 */
class NullTestImageEffect extends ImageEffectBase {
  
  /**
   * {@inheritdoc}
   */
  public function transformDimensions(array &$dimensions, $uri) {
    // Unset image dimensions.
    $dimensions['width'] = $dimensions['height'] = NULL;
  }
  
  /**
   * {@inheritdoc}
   */
  public function applyEffect(ImageInterface $image) {
    return TRUE;
  }

}