varbase_heroslider.module

<?php

/**
 * @file
 * The varbase_heroslider.module.
 */

use Drupal\media\Entity\Media;

/**
 * Implements hook_theme().
 */
function varbase_heroslider_theme($existing, $type, $theme, $path) {
  return [
    'views_view__varbase_heroslider' => [
      'template' => 'views-view--varbase-heroslider',
      'base hook' => 'view',
    ],
  ];
}

/**
 * Implements hook_preprocess_node_HOOK().
 */
function varbase_heroslider_preprocess_node__varbase_heroslider(&$variables) {

  $node = $variables['elements']['#node'];
  if ($node->hasField('field_media_single')) {
    $media = $node->get('field_media_single')->getValue();
  }

  if (!empty($media)) {
    $entity = Media::load($media[0]['target_id']);
    $entity_bundle = $entity->bundle();

    if ($entity_bundle == 'remote_video') {
      $variables['provider'] = $entity->field_provider->value;
    }
  }
}