@primer/css is a utility-first CSS library that provides a set of pre-defined classes to help you style your HTML elements. It's created and maintained by GitHub's design system team and follows the Primer design system. @primer/css offers a robust set of styling options for typography, layout, color, and more.
Alternatives: Bootstrap, Tailwind CSS, Bulma
v12.2.1(11 months ago)
Both @primer/css and Fela are popular npm packages in the CSS-in-JS ecosystem. However, @primer/css is specifically built and maintained by GitHub's Primer team, which gives it a significant edge in popularity, especially within the GitHub community.
In terms of bundle size, @primer/css is relatively lightweight as it focuses on providing utility classes and components for building GitHub-styled applications. Fela, on the other hand, is a more feature-rich CSS-in-JS solution, and its bundle size may be larger due to the additional functionality it offers.
The developer experience with @primer/css is streamlined and intuitive, as it provides a well-structured and documented set of utility classes and components. Fela, being a more powerful CSS-in-JS solution, offers advanced features but may have a steeper learning curve. It provides a flexible API and allows for more programmatic control over styles.
Both @primer/css and Fela have active communities and are regularly maintained. However, @primer/css benefits from being an official library maintained by GitHub, which ensures sustained support and updates. Fela has a dedicated community and offers extensive documentation and support resources.