Release 0.19.1 · facebook/stylex

What's Changed

[devtools-extension] Fix panel CSS, dedupe rules, and add metadata export by @mellyeliu in #1721
[devtools] Improvements to the DevTools extension and expansion to all browsers by @nmn in #1822
[eslint-plugin] Allow type exports in enforce-extension rule by @henryqdineen in #1743
[eslint-plugin] Accept numeric values for grid line properties by @ahmedsadid in #1730
[babel-plugin] Deterministic ordering for px min/max-width defineConsts breakpoints by @henryqdineen in #1652
[babel-plugin] Restrict what the compile-time evaluator can reach by @mellyeliu in #1818

[eslint-plugin] Add missing valid-styles property validators by @skovhus in #1708
[eslint-plugin] Allow calc() for outlineWidth in valid-styles by @LeSingh1 in #1760
[eslint-plugin] Fix formatting for outlineWidth rule by @mellyeliu in #1804
[eslint-plugin] Respect enableMediaQueryOrder in sort-keys by @gunjanjaswal in #1756
Fix concurrent PostCSS builds by @Hashim1999164 in #1808
[unplugin] Match hashed index and style CSS asset names by @Om-singhaI in #1817
[babel-plugin] Quote content values that contain quote characters by @Om-singhaI in #1828
Avoid Chromium rounding generated max-width bounds by @rksharma-owg in #1858
[docs] Recover from stale client chunks by @mellyeliu in #1823
[docs] Keep the playground running when the initial code fails to compile by @mellyeliu in #1827
Fix broken playground by @nmn in #1847

Fix RSS/Atom feed dates all showing the build date by @henryqdineen in #1649
Add publication date to blog posts by @ahmedsadid in #1734
Improve playground readability by @mellyeliu in #1819
Fix last-wins wording after property-specificity default by @mccafferson in #1826
Update copyright year to 2026 in Footer component by @Yxmura in #1694

Full Changelog: 0.19.0...0.19.1