[feat] Bring back stylex.attrs

[nmn]

What changed / motivation ?

Brings back stylex.attrs which works like stylex.props but instead of returning an object with className string and a style object, it returns an object with class and style strings.

This API makes it simpler and easier to use StyleX with UI libraries such as Solid.js, Qwik.js, Svelte, Vue and others.

---

TODO:

• Looking for ways to further refactor the code to simplify and improve types.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
stylex	Ready	Preview, Comment	Mar 22, 2026 2:30am

[github-actions]

workflow: benchmarks/perf

Comparison of performance test results, measured in operations per second. Larger is better.
yarn workspace v1.22.22
yarn run v1.22.22
$ node ./compare.js /tmp/tmp.7uEtO7WD9a /tmp/tmp.v5uhlYL5sK

Results	Base	Patch	Ratio
babel-plugin: stylex.create
· basic create	526	534	1.02	+
· complex create	65	65	1.00
babel-plugin: stylex.createTheme
· basic themes	435	431	0.99	-
· complex themes	33	33	1.00
Done in 0.09s.
Done in 0.33s.

[github-actions]

workflow: benchmarks/size

Comparison of minified (terser) and compressed (brotli) size results, measured in bytes. Smaller is better.
yarn workspace v1.22.22
yarn run v1.22.22
$ node ./compare.js /tmp/tmp.PIaSf3V3Pz /tmp/tmp.oYrtx4p1Sj

Results	Base	Patch	Ratio
@stylexjs/stylex/lib/cjs/stylex.js
· compressed	1,331	1,447	1.09	!!
· minified	4,209	4,558	1.08	!!
@stylexjs/stylex/lib/cjs/inject.js
· compressed	1,793	1,793	1.00
· minified	4,915	4,915	1.00
benchmarks/size/.build/bundle.js
· compressed	496,650	496,650	1.00
· minified	4,847,840	4,847,840	1.00
benchmarks/size/.build/stylex.css
· compressed	99,653	99,867	1.00	+
· minified	747,850	747,613	1.00	-
Done in 0.08s.
Done in 0.31s.