Tachyons is a functional CSS framework that enables rapid and consistent development of responsive user interfaces in an efficient and maintainable way. It is built around the concept of atomic design, providing a library of small, single-purpose classes that can be easily composed to build complex components.
Both @emotion/css and Tachyons are popular npm packages in the front-end development community. However, Tachyons has been around for longer and has a larger user base and community support.
In terms of performance, @emotion/css generates CSS styles dynamically at runtime, which can have a small overhead. Tachyons, on the other hand, relies on static CSS classes, resulting in faster rendering times. However, the difference in performance is usually negligible for most applications.
While @emotion/css offers more flexibility and fine-grained control over styling due to its inline CSS approach, Tachyons provides a more opinionated and consistent styling system with its utility classes. Tachyons promotes a consistent and reusable set of class names across the project, which can be beneficial for maintaining a consistent design system.