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facebook/stylex

v0.19.1

Curated styling / build tool repository (facebook/stylex) tracked via conditional GitHub .atom polling.

BREAKING
What is facebook/stylex?

@stylexjs/stylex is an open-source library and developer tool in the facebook/stylex ecosystem. It saves developers from writing repetitive low-level boilerplate from scratch by providing a battle-tested, open-source implementation ready for production.

STYLINGnpm:@stylexjs/stylexTypeScriptreleases.atom
10,453+16 stars (24h)
#stylex
AI Executive Summary & Artifact Size Impact
Quick Summary: What Changed · What To Do · Upgrade Effort

[devtools-extension] Fix panel CSS, dedupe rules, and add. Review breaking API changes before upg… Migration: Moderate.

Semver: PATCH·Manifest: package.json
Artifact Size Impactunavailable
Size Unavailable
Telemetry unmeasured for pre-release or source-only registry build
Breaking Changes, Release Highlights & Migration Snippet

Key Release Highlights (v0.19.1)

  • [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

Breaking Changes (Action Required)

  • [babel-plugin] Deterministic ordering for px min/max-width defineConsts breakpoints by @henryqdineen in #1652
  • Remove property-prefixed debug class names by @nmn in #1834
Copy-Paste Upgrade / Migration Snippet
npm install @stylexjs/stylex@0.19.1

Ecosystem Compatibility Matrix & Verified Graph Warnings

TypeScript 5.xcompatible— Ships standard TypeScript declaration files without type regressions.

Zero-Noise Historical Release Timeline (1)

Format: [Core Change] + [Required Action] + [Migration Effort]
v0.19.1BREAKING⚖️ Size Unavailable

[devtools-extension] Fix panel CSS, dedupe rules, and add. Review breaking API changes before upg… Migration: Moderate.

Upgrade & Migration Q&A (facebook/stylex v0.19.1)

Direct Answers for Engineers & AI Agents

Is facebook/stylex v0.19.1 safe to upgrade in production?

facebook/stylex v0.19.1 is classified as BREAKING (PATCH release). [devtools-extension] Fix panel CSS, dedupe rules, and add. Review breaking API changes before upg… Migration: Moderate.

What breaking changes or compatibility risks exist in facebook/stylex v0.19.1?

[babel-plugin] Deterministic ordering for px min/max-width defineConsts breakpoints by @henryqdineen in #1652 Remove property-prefixed debug class names by @nmn in #1834

What is the bundle size impact of @stylexjs/stylex v0.19.1?

Measured bundle size telemetry is currently unavailable for @stylexjs/stylex v0.19.1; verify build output locally before deploying.

How do I upgrade @stylexjs/stylex to v0.19.1?

Upgrade @stylexjs/stylex to v0.19.1 by running "npm install @stylexjs/stylex@0.19.1" and applying the migration steps: npm install @stylexjs/stylex@0.19.1