CSS Modules vs CSS-in-JS: Which is Better?

What are the main differences between CSS Modules and CSS-in-JS?

CSS Modules are a way to write CSS that is scoped locally to the component, preventing style conflicts. CSS-in-JS, on the other hand, allows you to write CSS directly within your JavaScript files, often using libraries like styled-components or Emotion.

What are the advantages of using CSS-in-JS?

CSS-in-JS offers dynamic styling capabilities, easier theming, and the ability to leverage JavaScript logic for styles. It also helps in maintaining styles alongside component logic.

Are there any downsides to using CSS Modules?

One downside of CSS Modules is that they can lead to larger bundle sizes since styles are often imported separately. Additionally, they may require a build step to process the CSS.

Which approach is better for large applications?

It depends on the team's preference and the project's requirements. CSS Modules can be more straightforward for larger teams, while CSS-in-JS can provide more flexibility and dynamic styling.