Modernizing Drupal 10 Theme Development Pdf __link__

Modernizing Drupal 10 Theme Development

Performance: Lazy Building

Instead of loading all CSS/JS globally, attach libraries only to the specific components rendered on the page. Drupal 10’s lazy-loading ensures that if a card component isn't on the page, its CSS isn't downloaded.

Part 7: Tooling Stack for the Modern D10 Themer

You cannot modernize with just a text editor. You need a build step. modernizing drupal 10 theme development pdf

| Tool | Purpose | | :--- | :--- | | DDEV | Local dev with Node 18+ and PHP 8.2. | | Vite | Ultra-fast HMR for Twig/CSS/JS. | | Storybook (with SDC) | Isolate component dev outside Drupal. | | PHPStorm/VSCode | With Twig SDK for auto-completion of SDC props. | | CSpell | Lint your Twig variables. | Part 7: Tooling Stack for the Modern D10

Theming Patterns

• Use Twig component templates with render arrays or preprocessed variables; avoid heavy logic in Twig.
• Prefer small, focused CSS files imported per component to reduce global scope.
• Progressive enhancement: ensure pages work without JS; enhance interactions with JS modules.
• Use Drupal libraries.yml to register assets and attach them per component or route, not globally.