Declarative Shadow DOM and the future of Drupal Theming

47:42 · 14 Oct 2025 – 17 Oct 2025 · YouTube

About this talk

In this talk, John Albin Wilkins explores the integration of modern JavaScript APIs into Drupal's traditional rendering system. He discusses how technologies such as Single Directory Components and Declarative Shadow DOM can revitalize Drupal's old-school theming system by allowing developers to implement server-side rendering with client-side JavaScript capabilities. The session covers the evolution of Web Components, highlighting the recent addition of Declarative Shadow DOM, which enables the definition of web components using just HTML and CSS. Attendees should have a basic understanding of server-side versus client-side rendering, as well as the APIs of Custom Elements and Shadow DOM. The session aims to foster an interactive environment with a collaborative Q&A, encouraging participants to engage actively.

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DrupalCon Vienna 2025

14 Oct 2025 – 17 Oct 2025

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