social_media_links-8.x-2.x-dev/modules/social_media_links_field/social_media_links_field.module

<?php

/**
 * @file
 * Contains social_media_links_field.module.
 */

/**
 * Implements hook_theme_registry_alter().
 */
function social_media_links_field_theme_registry_alter(&$theme_registry) {
  $theme_registry['social_media_links_platforms']['variables']['entity_type'] = NULL;
  $theme_registry['social_media_links_platforms']['variables']['entity_bundle'] = NULL;
  $theme_registry['social_media_links_platforms']['variables']['field_name'] = NULL;
}

/**
 * Implements hook_theme_suggestions_HOOK_alter().
 */
function social_media_links_field_theme_suggestions_social_media_links_platforms_alter(array &$suggestions, array $variables) {
  $suggestions = [];
  if (isset($variables['field_name'])) {
    $suggestions[] = 'social_media_links_platforms__' . $variables['field_name'];
    $suggestions[] = 'social_media_links_platforms__' . $variables['entity_type'] . '__' . $variables['entity_bundle'];
    $suggestions[] = 'social_media_links_platforms__' . $variables['entity_type'] . '__' . $variables['field_name'];
    $suggestions[] = 'social_media_links_platforms__' . $variables['entity_type'] . '__' . $variables['field_name'] . '__' . $variables['entity_bundle'];
  }

  return $suggestions;
}