ezcontent-8.x-dev/modules/ezcontent_paragraphs/modules/ezcontent_hero_media/ezcontent_hero_media.module

<?php

/**
 * @file
 * Module file for ezcontent_hero_media.
 */

/**
 * Implements hook_preprocess_field().
 */
function ezcontent_hero_media_preprocess_paragraph__card(&$variables) {
  if ($variables['view_mode'] === "hero_media") {
    $variables['#attached']['library'][] = 'ezcontent_hero_media/ezcontent_card.hero_media_display';
  }
}