New Features

• Prepare some upcoming changes by @dcastil in #713
  • Theme getters returned by fromTheme now expose the theme key they read as a themeKey property, so tooling can identify the referenced theme scale without calling the getter.
  • Release tags now include the package name, starting with tailwind-merge@3.7.0.

Bug Fixes

• Fix arbitrary values using color() or light-dark() being classified as lengths instead of colors by @ddussi in #712
• Fix bare bg-conic not merging with other background image classes by @dcastil in #708
• Fix columns-auto not conflicting with other columns classes by @dcastil in #707
• Fix container sizes like inline-2xl not merging by @dcastil in #706
• Fix max-h-none missing in max-h class group by @mutewinter in #704
• Fix axis shorthands like px not overriding logical sides like ps by @dcastil in #705
• Fix leading-none being removed when the leading theme scale is overridden by @chatman-media in #689
• Fix deprecated shadow-inner being classified as shadow color instead of shadow by @dcastil in #703

Documentation

• Add Deno to install instructions by @bartlomieju in #687
• Add missing text-shadow theme key to configuration docs by @dcastil in 3e6d208

Other

• Switch package manager from yarn to pnpm by @dcastil in #680
• Harden CI security by @dcastil in #679

Full Changelog: v3.6.0...v3.7.0

Thanks to @brandonmcconnell, @manavm1990, @langy, @roboflow, @syntaxfm, @getsentry, @codecov, a private sponsor, @openclaw, @sourcegraph, @cesarvcanal, @CasperKristiansson, @jbisasky, @FrontendMasters and more via @thnxdev for sponsoring tailwind-merge! ❤️

New Features

• Add support for Tailwind CSS v4.3 by @dcastil in #677
  • Add postfixLookupClassGroups option to config to support Tailwind utilities where a slash is part of the full class name, like named container queries
• Add support for readonly array values by @unional in #652

Documentation

• Fix broken links in README by @maurer2 in #662

Other

• Harden internal CI pipeline security by omitting git checkout by @dcastil, suggested by @kyletaylored in 6b2499c

Full Changelog: v3.5.0...v3.6.0

Thanks to @brandonmcconnell, @manavm1990, @langy, @roboflow, @syntaxfm, @getsentry, @codecov, a private sponsor, @block, @openclaw, @sourcegraph, @mike-healy and more via @thnxdev for sponsoring tailwind-merge! ❤️

New Features

• Add support for Tailwind CSS v4.2 by @dcastil in #651

Full Changelog: v3.4.1...v3.5.0

Thanks to @brandonmcconnell, @manavm1990, @langy, @roboflow, @syntaxfm, @getsentry, @codecov, a private sponsor, @block, @openclaw, @sourcegraph and more via @thnxdev for sponsoring tailwind-merge! ❤️

Bug Fixes

• Prevent arbitrary font-family and font-weight from merging by @roneymoon in #635

Full Changelog: v3.4.0...v3.4.1

Thanks to @brandonmcconnell, @manavm1990, @langy, @roboflow, @syntaxfm, @getsentry, @codecov, a private sponsor, @block, @openclaw, @sourcegraph and more via @thnxdev for sponsoring tailwind-merge! ❤️

Bug Fixes

• Fix arbitrary value using color-mix not being detected as color by @dcastil in #591
  • This fix was backported from v3.3.1 to make it available for v2 users.

Full Changelog: v2.6.0...v2.6.1

Thanks to @brandonmcconnell, @manavm1990, @langy, @roboflow, @syntaxfm, @getsentry, @codecov, a private sponsor, @block, @openclaw and more via @thnxdev for sponsoring tailwind-merge! ❤️

New Features

• Performance optimizations which make tailwind-merge >10% faster
  • Vibe optimization by @quantizor in #547
  • Additional optimizations by @quantizor in #619

Documentation

• Improve docs by clarifying things, adding more examples by @dcastil in #618
• Make examples more realistic by @dcastil in #617
• Add custom variant as an alternative to docs by @kidonng in #592

Other

• Improve benchmarking suite by @quantizor in #620

Full Changelog: v3.3.1...v3.4.0

Thanks to @brandonmcconnell, @manavm1990, @langy, @roboflow, @syntaxfm, @getsentry, @codecov and a private sponsor for sponsoring tailwind-merge! ❤️

Bug Fixes

• Fix arbitrary value using color-mix() not being detected as color by @dcastil in #591

Full Changelog: v3.3.0...v3.3.1

Thanks to @brandonmcconnell, @manavm1990, @langy, @roboflow, @syntaxfm, @getsentry, @codecov, @sourcegraph, a private sponsor, @block and @shawt3000 for sponsoring tailwind-merge! ❤️

New Features

• Add support for tailwind CSS v4.1.5 by @dcastil in #575

Full Changelog: v3.2.0...v3.3.0

Thanks to @brandonmcconnell, @manavm1990, @langy, @roboflow, @syntaxfm, @getsentry, @codecov, @sourcegraph, a private sponsor and @block for sponsoring tailwind-merge! ❤️

New Features

• Add support for Tailwind CSS v4.1 by @dcastil in #565

Full Changelog: v3.1.0...v3.2.0

Thanks to @brandonmcconnell, @manavm1990, @langy, @jamesreaco, @roboflow, @syntaxfm, @getsentry, @codecov, @sourcegraph and a private sponsor for sponsoring tailwind-merge! ❤️

New Features

• Add support for Tailwind CSS v4.0.10 by @dcastil in #546

Bug Fixes

• Fix length variable in via-(length:*) class being merged with via-<color> classes accidentally by @dcastil in #559

Documentation

• Fix typo in comment in types.ts by @roottool in #549
• Update shadow scale recipe to tailwind merge v3 API by @dcastil in #545

Other

• Fix metrics report action erroring on PRs from forks by @dcastil in #551

Full Changelog: v3.0.2...v3.1.0

Thanks to @brandonmcconnell, @manavm1990, @langy, @jamesreaco, @roboflow, @syntaxfm, @getsentry, @codecov, @sourcegraph and a private sponsor for sponsoring tailwind-merge! ❤️