Drupal 10 officially deprecates many jQuery APIs. Modern theming requires modern JS.
Modernizing Drupal 10 Theme Development: A Comprehensive Guide
Drupal 10 marks a significant shift in how developers approach the frontend. Moving away from legacy base themes like Classy and Stable, the ecosystem now embraces modern tools like Single Directory Components (SDC), Tailwind CSS, and the Starterkit API. This guide explores the core strategies for modernizing your Drupal 10 development workflow to build faster, more maintainable, and accessible websites. 1. Embracing the New Theming Foundation
Historically, Drupal themes relied heavily on sub-theming from core themes. Drupal 10 changes this paradigm with the Starterkit theme. modernizing drupal 10 theme development pdf
From Sub-theming to Generating: Instead of creating a sub-theme of a core theme that might change, you now use the Starterkit API to generate a standalone theme folder. This copies a clean, modern codebase into your theme directory, ensuring your theme is independent of core updates that might break styles.
The .info.yml Evolution: The .info.yml file remains the heart of your theme, defining metadata, regions, and core version requirements. Modernizing means properly defining core_version_requirement: ^10 and utilizing the libraries key to manage assets efficiently. 2. Component-Driven Development with SDC
One of the most transformative features introduced in Drupal 10.1 is Single Directory Components (SDC). Drupal 10 officially deprecates many jQuery APIs
Unified Structure: SDC allows you to keep all files related to a component—Twig templates, CSS, JavaScript, and metadata—in a single directory. This mirrors modern frontend frameworks like React or Vue.
Integration with Storybook: Many teams now map Storybook components directly to Drupal structures. This allows designers and frontend developers to build and test UI components in isolation before they are integrated into the Drupal backend. 3. Advanced Asset Management and Build Processes
Gone are the days of manually writing large CSS files. Modern Drupal themes leverage utility-first frameworks and automated build tools. Book Review: Modernizing Drupal 10 Theme Development How do you modernize an existing Drupal 9/10
How do you modernize an existing Drupal 9/10 theme without breaking production?
Pro Script (run locally):
# Install puppeteer
npm install puppeteer