Code

Only expose used CSS variables#16211

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RobinMalfait merged 44 commits intomaintailwindlabs/tailwindcss:mainfrom feat/only-expose-used-variablestailwindlabs/tailwindcss:feat/only-expose-used-variablesCopy head branch name to clipboardFeb 7, 2025

+688-1,409

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Commits on Feb 7, 2025

• track if CSS variable is used

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  RobinMalfait

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• move :root population to build(…) step

  RobinMalfait

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• do not emit unused theme variables

  RobinMalfait

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• update tests

  RobinMalfait

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• mark variables as used when used in your CSS

  RobinMalfait

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• update tests

  RobinMalfait

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• do not mark CSS variables in @utility and @custom-variant as used

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  RobinMalfait

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• add method to track CSS variables in an AST

  RobinMalfait

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• update tests

  RobinMalfait

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• fast path: only scan if var() is used in the raw candidate

  RobinMalfait

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• add failing tests for @utility

  RobinMalfait

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• track CSS variables in @utility

  RobinMalfait

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• add Oxide tests to ensure we find CSS variables

  RobinMalfait

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• add integration test

  RobinMalfait

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• emit CSS variables when new CSS variables are found

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  RobinMalfait

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• only emit --foo-bar if preceded by var(

  RobinMalfait

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• run cargo clippy

  RobinMalfait

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• use fs.expectFileToContain

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• implement different approach

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• update tests to reflect changes

  RobinMalfait

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• handle escaped CSS variables

  RobinMalfait

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• update tests

  RobinMalfait

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• improve ValueParser, handle escaped characters

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• cleanup unnecessary code

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• cleanup unnecessary check

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• cache tracking of variables

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• detect all variables that start with --

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• update changelog

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• rename USED to STATIC

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• allow theme(static)

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• add test for @theme static

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• allow accessing context in the optimizeAst step

  RobinMalfait

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• track usage of @keyframes

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  RobinMalfait

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• remove unnecessary logic

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• reflect removal of unused @keyframes in tests

  RobinMalfait

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• update CHANGELOG

  RobinMalfait

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• remove unnecessary check

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• add test for @theme static

  RobinMalfait

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• Test that non-theme keyframes are always preserved

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• improve naming

  RobinMalfait

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• move tracking of variables up

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• keep static and used separate

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• remove unnecessary code

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• remove unnecessary reset

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