customElements.define('custom-accordion', Accordion);
environment setup to complex theming of blocks, views, and paragraphs. Advanced Topics : Coverage extends to advanced areas such as visual regression testing
Modern development isn't just about Twig. Drupal 10 is designed to act as a powerful back-end for headless setups. Book Review: Modernizing Drupal 10 Theme Development
| Pitfall | Solution | | :--- | :--- | | Trying to use SDC with a legacy base theme (e.g., Classy). | Use starterkit_theme generator. | | CSS cache issues after Vite build. | Set $config['system.performance']['css']['preprocess'] = FALSE; in settings.local.php . | | JavaScript not re-attaching after BigPipe load. | Use MutationObserver or web components (auto-attaches). | | Responsive images break with modern CSS. | Use picture element and Tw’s responsive_image formatter. |