ept_image_gallery-1.4.2/ept_image_gallery.module

<?php

/**
 * @file
 * Add template for EPT Image Gallery.
 */

/**
 * Implements hook_theme().
 */
function ept_image_gallery_gallery_theme($existing, $type, $theme, $path) {
  $theme_templates = [];

  // Register custom Paragraph field.
  $theme_templates['field__paragraph__field_ept_image_gallery__ept_image_gallery'] = [
    'base hook' => 'field',
  ];

  return $theme_templates;
}

/**
 * Implements hook_theme_suggestions_hook_alter().
 */
function ept_image_gallery_theme_suggestions_field_alter(array &$suggestions, array $variables, $hook) {
  $field = $variables['element']['#field_name'];

  if ($field == 'field_ept_image_gallery') {
    $suggestions[] = 'field__paragraph__field_ept_image_gallery__ept_image_gallery';
  }
}

/**
 * Implements hook_theme_registry_alter().
 */
function ept_image_gallery_theme_registry_alter(&$theme_registry) {
  $ept_module = 'ept_image_gallery';
  $module_path = \Drupal::service('extension.list.module')->getPath($ept_module);

  $base_theme = 'field';
  $theme_registry['field__paragraph__ept_image_gallery__field_ept_image_gallery'] = [
    'path' => $module_path . '/templates',
    'template' => 'field--paragraph--field-ept-image-gallery--field-ept-image-gallery',
    'render element' => $theme_registry[$base_theme]['render element'],
    'base hook' => $base_theme,
    'type' => 'module',
    'theme path' => $module_path,
    'preprocess functions' => $theme_registry[$base_theme]['preprocess functions'],
  ];

}