chore(deps): update tailwindcss monorepo to v4.2.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@tailwindcss/vite (source)	4.2.2 → 4.2.3
tailwindcss (source)	4.2.2 → 4.2.3

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Release Notes

tailwindlabs/tailwindcss (@​tailwindcss/vite)

v4.2.3

Compare Source

Fixed

• Canonicalization: improve canonicalizations for tracking-* utilities by preferring non-negative utilities (e.g. -tracking-tighter → tracking-wider) (#​19827)
• Fix crash due to invalid characters in candidate (exceeding valid unicode code point range) (#​19829)
• Ensure query params in imports are considered unique resources when using @tailwindcss/webpack (#​19723)
• Canonicalization: collapse arbitrary values into shorthand utilities (e.g. px-[1.2rem] py-[1.2rem] → p-[1.2rem]) (#​19837)
• Canonicalization: collapse border-{t,b}-* into border-y-*, border-{l,r}-* into border-x-*, and border-{t,r,b,l}-* into border-* (#​19842)
• Canonicalization: collapse scroll-m{t,b}-* into scroll-my-*, scroll-m{l,r}-* into scroll-mx-*, and scroll-m{t,r,b,l}-* into scroll-m-* (#​19842)
• Canonicalization: collapse scroll-p{t,b}-* into scroll-py-*, scroll-p{l,r}-* into scroll-px-*, and scroll-p{t,r,b,l}-* into scroll-p-* (#​19842)
• Canonicalization: collapse overflow-{x,y}-* into overflow-* (#​19842)
• Canonicalization: collapse overscroll-{x,y}-* into overscroll-* (#​19842)
• Read from --placeholder-color instead of --background-color for placeholder-* utilities (#​19843)
• Upgrade: ensure files are not emptied out when killing the upgrade process while it's running (#​19846)
• Upgrade: use config.content when migrating from Tailwind CSS v3 to Tailwind CSS v4 (#​19846)
• Upgrade: never migrate files that are ignored by git (#​19846)
• Add .env and .env.* to default ignored content files (#​19846)
• Canonicalization: migrate overflow-ellipsis into text-ellipsis (#​19849)
• Canonicalization: migrate start-full → inset-s-full, start-auto → inset-s-auto, start-px → inset-s-px, and start-<number> → inset-s-<number> as well as negative versions (#​19849)
• Canonicalization: migrate end-full → inset-e-full, end-auto → inset-e-auto, end-px → inset-e-px, and end-<number> → inset-e-<number> as well as negative versions (#​19849)
• Canonicalization: move the - sign inside the arbitrary value -left-[9rem] → left-[-9rem] (#​19858)
• Canonicalization: move the - sign outside the arbitrary value ml-[calc(-1*var(--width))] → -ml-(--width) (#​19858)
• Improve performance when scanning JSONL / NDJSON files (#​19862)
• Support NODE_PATH environment variable in standalone CLI (#​19617)

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Renovate PR Review Results

⚖️ Safety Assessment: ✅ Safe

🔍 Release Content Analysis

Package Updates:

• tailwindcss: 4.2.2 → 4.2.3
• @tailwindcss/vite: 4.2.2 → 4.2.3

Release Type: Patch release (bug fixes and improvements, no breaking changes)

Key Changes in v4.2.3 (Released 2026-04-20):

1. Canonicalization Improvements - Multiple fixes to improve CSS utility class suggestions and collapsing:

   • Better suggestions for tracking-* utilities (prefer non-negative forms)
   • Automatic collapsing of arbitrary values into shorthands (e.g., px-[1.2rem] py-[1.2rem] → p-[1.2rem])
   • Collapsing of directional utilities into shorthands (e.g., border-{t,b}-* → border-y-*)
   • Migration of deprecated utilities (overflow-ellipsis → text-ellipsis, start-* → inset-s-*, end-* → inset-e-*)
   • Normalization of negative signs in arbitrary values

2. Bug Fixes:

   • Fixed crash when processing invalid Unicode code points in CSS candidates (#19829)
   • Fixed placeholder-* utilities reading from wrong CSS variable (--placeholder-color instead of --background-color) (#19843)
   • Fixed webpack query params not being treated as unique resources (#19723)

3. Upgrade Tool Improvements:

   • Prevented file corruption when killing the upgrade process (#19846)
   • Now respects config.content from v3 when migrating
   • Skips git-ignored files during migration
   • Adds .env and .env.* to default ignored content files

4. Performance:

   • Improved performance when scanning JSONL/NDJSON files (#19862)

5. Standalone CLI:

   • Added support for NODE_PATH environment variable (#19617)

🎯 Impact Scope Investigation

Current Usage Analysis:

1. Tailwind CSS Integration:

   • Used via @tailwindcss/vite plugin in astro.config.ts:23
   • Main stylesheet: src/styles/global.css imports @import 'tailwindcss'
   • Configuration: tailwind.config.js with custom theme extensions
   • Vite version: 7.3.1 (compatible with @tailwindcss/vite peer dependency)

2. Affected Utilities Check:

   • No usage of deprecated utilities (overflow-ellipsis, start-*, end-*) that are migrated in this release
   • No usage of placeholder-* utilities in the codebase (the bug fix won't affect this project)
   • No usage of negative arbitrary value patterns (e.g., -left-[9rem]) that are normalized in this release
   • Custom utilities defined in tailwind.config.js are not affected by core changes

3. Dependency Chain:

   • tailwindcss@4.2.3 (core package)
   • @tailwindcss/vite@4.2.3 (Vite plugin)
   • @tailwindcss/node@4.2.3 (automatically updated)
   • @tailwindcss/oxide@4.2.3 (Rust-based engine, automatically updated)
   • All platform-specific oxide binaries updated to 4.2.3
   • enhanced-resolve: 5.20.1 → 5.21.0 (indirect dependency)
   • tapable: 2.3.2 → 2.3.3 (indirect dependency)

4. Build Configuration:

   • No changes required to astro.config.ts or tailwind.config.js
   • Current v4 migration compatibility styles in global.css:22-46 remain valid
   • All custom theme tokens and plugins are unaffected

💡 Recommended Actions

Immediate Actions:

1. ✅ Merge this PR - The update is backward compatible and safe to merge
2. No code changes required
3. No configuration updates needed

Post-Merge Validation:

1. Monitor build output to ensure no new warnings or errors
2. Verify that the site builds successfully in CI/CD
3. Check that CSS output remains consistent (canonicalization improvements are internal optimizations)

Benefits of Updating:

• Crash prevention for edge cases with invalid Unicode in CSS candidates
• Better developer experience with improved canonicalization suggestions
• Performance improvements for JSONL/NDJSON scanning
• More robust upgrade tooling (though not directly applicable to this project which is already on v4)

🔗 Reference Links

Official Release:

• Tailwind CSS v4.2.3 Changelog
• GitHub Release Comparison

Key Pull Requests:

• #19827 - Canonicalization: tracking-* utilities
• #19829 - Fix crash with invalid Unicode
• #19837 - Collapse arbitrary values into shorthands
• #19843 - Fix placeholder-* utilities CSS variable
• #19846 - Upgrade tool stability fixes
• #19862 - JSONL/NDJSON performance improvements

Package Documentation:

• @tailwindcss/vite Documentation
• Tailwind CSS v4 Documentation

Generated by koki-develop/claude-renovate-review

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