@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
Both @linaria/core and @primer/css are popular npm packages, but they serve different purposes and cater to different audiences. @primer/css is the CSS framework developed by GitHub, which has gained popularity within the GitHub community. @linaria/core, on the other hand, is a styling library based on CSS-in-JS approach and has gained popularity among developers who prefer this approach.
Both packages can be integrated into React applications, but they offer different ways of doing so. @linaria/core integrates seamlessly with React components using custom decorators or hook APIs. @primer/css, on the other hand, can be used alongside React components by applying pre-defined CSS classes or customizing the styles directly.
@linaria/core offers a modern developer experience with features like automatic code-splitting, dead code elimination, and CSS extraction. It also provides a better developer tooling and documentation compared to @primer/css. However, if you are already familiar with CSS frameworks like @primer/css, it might be easier to get started with it.
Community and Support
@primer/css benefits from being developed and maintained by GitHub, which has a large and active community. It has good support and frequent updates. @linaria/core also has a growing community and is actively maintained, but it might not have the same level of community support as @primer/css.