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azangrulast Saturday at 9:43 PM1 replyview on HN

Why do people prefer it over CSS modules? They also solve the style containment problem, and do not require any effort to set up, or any additional library to learn?


Replies

troupolast Saturday at 10:30 PM

You're probably confusing something with something?

CSS Modules are a JS-only third party solution re-invented/re-implemented in a dozen different ways for various JS frontend frameworks. Requires setting up, requires learning an additional library.

If you mean these CSS modules: https://github.com/css-modules/css-modules?tab=readme-ov-fil... then they need to be supported by whatever build chain you use. And you literally need to use them slightly different than normal CSS. E.g. for Vite yuo need to have `.module.css` extension. And they often rely on additional libraries to learn. E.g. you can enable Lightning CSS with aforementioned Vite which comes with its own CSS flavour: https://lightningcss.dev/css-modules.html

If you mean CSS import attributes, they only appeared in 2024 in Chrome and Firefox, early 2025 in mobile Android etc. and they don't provide magical local scoping out of the box: https://caniuse.com/wf-css-modules

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