How do CSS-in-JS and CSS Modules compare in performance?

How do CSS-in-JS and CSS Modules compare in performance?

CSS-in-JS and CSS Modules have different performance characteristics. CSS-in-JS can lead to larger bundle sizes due to runtime styles, while CSS Modules generate static styles that can be optimized by the browser.

Which one is better for large applications?

For large applications, CSS Modules might be better as they promote better separation of concerns and can be optimized more effectively. CSS-in-JS can be beneficial for dynamic styling but may introduce overhead.

What about the developer experience?

CSS-in-JS often provides a better developer experience with features like scoped styles and theming. However, CSS Modules also offer a good experience with familiar CSS syntax and tooling support.

Are there any specific use cases where one is preferred over the other?

Yes, CSS-in-JS is often preferred in projects requiring dynamic styling or theming, while CSS Modules are great for static styles and larger codebases where performance is critical.