smarty.module

<?php

/**
 * @file
 * Primary module hooks for Smarty module.
 */

 function smarty_element_info_alter(array &$info) {
  // Decrease the default size of textfields.
  if (isset($info['address'])) {
    $info['address']['#smarty'] = FALSE;
    $info['address']['#process'][] = 'smarty_address_process';
  }
}

function smarty_address_process($element) {
  $settings = \Drupal::config('smarty.settings');
  if ((!empty($element['#smarty']) || $settings->get('address_apply_all')) && !empty($element['address_line1'])) {
    $element['#attributes']['class'][] = 'smarty-element';
    $element['address_line1']['#attributes']['class'][] = 'smarty-autocomplete';
    $element['address_line1']['#attached']['library'][] = 'smarty/address';
    // $element['address_line1']['#attributes']['data-1p-ignore'] = '';
    $element['address_line1']['#attached']['drupalSettings']['smarty'] = [
      'key' => $settings->get('key'),
      'disable_complete' => $settings->get('disable_complete'),
    ];
    foreach ([
      'address_line2',
      'address_line3',
      'locality',
      'administrative_area',
      'postal_code',
    ] as $fieldname) {
      if (isset($element[$fieldname])) {
        $element[$fieldname]['#attributes']['class'][] = 'smarty-' . str_replace('_', '-', $fieldname);
      }
    }
  }
  return $element;
}