Pencil.dev focuses on design-to-code speed versus static tools; upcoming reusable component libraries are planned for 2026.

This plugin is still a work-in-progress, I'm currently working out how to extract used classes from templates & scripts before bundling, and replace all references within style tags, css, and scss ...

Here you can find a simple yet beautiful sample app that switches its styling between light and dark depending on current user theme stored in Account entity. (And here is the same app for Mendix 8.) ...