degov-8.x-2.0/modules/degov_node_faq/degov_node_faq.module

<?php

use Drupal\degov_common\Common;
use Drupal\views\ViewExecutable;
use Drupal\Component\Utility\Unicode;

/**
 * Implements hook_preprocess().
 */
function degov_node_faq_preprocess(&$variables, $hook, &$info) {
  // Add template suggestions and libraries implemented in this module.
  Common::addThemeSuggestions($variables, $hook, $info, [
    'module_name' => 'degov_node_faq',
    'entity_type' => 'node',
    'entity_bundles' => ['faq'],
    'entity_view_modes' => []
  ]);
}

/**
 * Implements hook_views_pre_render().
 */
function degov_node_faq_views_pre_render(ViewExecutable $view) {
  if ($view->storage->id() == 'search_faq') {
    $input = $view->getExposedInput();
    $terms = trim(strip_tags($input['volltext']));

    if (!empty($terms)) {
      $terms = array_unique(preg_split('/\s+/', Unicode::strtolower($terms)));
    }
    else {
      $terms = [];
    }

    $view->element['#attached']['drupalSettings']['degov_node_faq']['search_faq'] = $terms;
    $view->element['#attached']['library'][] = 'degov_node_faq/search_faq';
  }
}