textareatabs-8.x-1.x-dev/textareatabs.module

<?php
/**
 * @file
 * Contains textareatabs hook definitions.
 */

/**
 * Implements hook_element_info_alter().
 *
 * @param array &$types
 *   A reference to the element info array.
 */
function textareatabs_element_info_alter(array &$types) {
  $allowed_types = ['textarea', 'text_format'];

  foreach ($allowed_types as $type) {
    if (!isset($types[$type]['#attached'])) {
      $types[$type]['#attached'] = [
        'library' => []
      ];
    }
    $types[$type]['#attached']['library'][] = 'textareatabs/textareatabs';
  }
}