bee_hotel-1.x-dev/modules/beehotel_addtocart/beehotel_addtocart.module

<?php

/**
 * @file
 * Contains global features for beehotel_addtocart module.
 */

use Drupal\Component\Render\MarkupInterface;

/**
 * Hide "added to cart".
 *
 * Hide "added to cart" message when adding from these forms.
 */
function beehotel_addtocart_preprocess_status_messages(&$variables) {
  $hideMessagefrom = bee_hotel_hide_message_from_these_forms();
  if (isset($variables['message_list']['status'])) {
    $status_messages = $variables['message_list']['status'];
    foreach ($status_messages as $delta => $message) {
      if ($message instanceof MarkupInterface) {
        $session = \Drupal::request()->getSession();
        if (isset($session->get('beehotel_data')['from'])) {
          $from = $session->get('beehotel_data')['from'];
          if (isset($from) && in_array($from, $hideMessagefrom)) {
            unset($variables['message_list']['status']);
            break;
          }
        }
      }
    }
  }
}