<?php

function template_preprocess_edlp_search_results(&$vars){
  // dpm($vars);

  $view_builder = \Drupal::entityTypeManager()->getViewBuilder('node');

  $items = [];
  if(count($vars['items'])){
    foreach ($vars['items'] as $item) {
      $items[] = $view_builder->view($item, 'search_index');
    }
  }

  $vars['items'] = $items;

}