drupal-caravane/web/themes/custom/caravane/caravane.theme

<?php

/**
 * @file
 * Functions to support theming in the caravane theme.
 */

function caravane_page_attachments_alter(&$page) {
  if (getenv('APP_ENV') === 'development') {
    // $attachments['#attached']['html_head'][] = [['src' => 'http://localhost:5173/@vite/client', 'type' => 'module'],'vite-client'];
    // $page['#attached']['library'][] = 'http://localhost:5173/@vite/client';
    // $attachments['#attached']['html_head'][] = [['src' => 'http://localhost:5173/assets/js/main.js', 'type' => 'module'],'vite-main'];
    // $page['#attached']['library'][] = 'http://localhost:5173/assets/js/main.js';
    $page['#attached']['library'][] = 'caravane/vitehmr';
  }else{
    $page['#attached']['library'][] = 'caravane/global';
  }
}
/**
 * Implements hook_preprocess_HOOK() for html.html.twig.
 */
function caravane_preprocess_html(&$variables) {
}

/**
 * Implements hook_preprocess_HOOK() for page.html.twig.
 */
function caravane_preprocess_page(&$variables) {

}

/**
 * Implements hook_preprocess_HOOK() for node.html.twig.
 */
function caravane_preprocess_node(&$variables) {

}

function your_theme_preprocess_block(&$variables) {

}