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Changes to PostCSS Custom Properties

Unreleased (patch)

  • Fix infinite loop for comments that contain variables (e.g. var(--foo) /* var(--bar) */)

14.0.5

May 27, 2025

14.0.4

November 1, 2024

14.0.3

October 23, 2024

14.0.2

October 10, 2024

14.0.1

August 18, 2024

14.0.0

August 3, 2024

13.3.12

July 6, 2024

13.3.11

June 29, 2024

13.3.10

May 4, 2024

13.3.9

May 4, 2024

13.3.8

April 22, 2024

13.3.7

April 11, 2024

  • Improve handling of cross references between computed values of custom properties

13.3.6

March 13, 2024

13.3.5

February 19, 2024

13.3.4

December 31, 2023

13.3.3

December 15, 2023

13.3.2

September 24, 2023

13.3.1

September 18, 2023

  • Improve performance

13.3.0

July 24, 2023

13.2.1

July 3, 2023

13.2.0

June 1, 2023

  • Do not generate fallback values when the rule is wrapped in @supports (top: var(--f)).

13.1.5

April 10, 2023

  • Updated @csstools/css-tokenizer to 2.1.1 (patch)
  • Updated @csstools/css-parser-algorithms to 2.1.1 (patch)
  • Updated @csstools/cascade-layer-name-parser to 1.0.2 (patch)

13.1.4

February 21, 2023

  • Fixed: exception on chained variable declarations.

13.1.3

February 8, 2023

  • Fixed: exception on missing variables.

13.1.2

February 7, 2023

  • Do not apply fallback values when these contain unresolvable custom properties.

13.1.1

January 28, 2023

  • Improve types declaration in package.json

13.1.0

January 24, 2023

  • Added: Support for Cascade Layers.
  • Improve plugin performance (port of fixes in v12.1.11)

13.0.0

November 14, 2022

  • Updated: Support for Node v14+ (major).
  • Removed : importFrom feature (breaking).
  • Removed : exportTo feature (breaking).
  • Added support for local custom property declarations.
.example {
	--a-value: 20px;
	margin: var(--a-value);
}

/* becomes */

.example {
	--a-value: 20px;
	margin: 20px;
	margin: var(--a-value);
}

12.1.11

December 1, 2022

  • Improve plugin performance

12.1.10

October 20, 2022

  • Fix how preserve: false interacts with logic around duplicate code (see 12.1.9).
:root {
	--my-order: 1;
}

.foo {
	order: 1;
	order: var(--my-order);
}

/* With `preserve: false` : */

.foo {
	order: 1;
}

12.1.9

September 14, 2022

  • Prevent duplicate code generation.
.foo {
	order: 1;
	order: var(--my-order, 1);
}

/* becomes */

.foo {
	order: 1;
- 	order: 1;
	order: var(--my-order, 1);
}

12.1.8

June 10, 2022

  • Remove some unneeded regular expressions.

12.1.7

April 8, 2022

  • Fix racing condition that could happen when using other async PostCSS plugins (#331)

12.1.6

April 5, 2022

  • Fix var() fallback value downgrades with value lists.

12.1.5

March 19, 2022

  • Add deprecation notice for importFrom and exportTo

see the discussion

12.1.4

January 31, 2022

  • Fix .mjs in importFrom when using export default
  • Fix .mjs in importFrom on Windows

12.1.3

January 17, 2022

  • Reset plugin state after each process. It is now safe to use the plugin multiple times for different processes or when watching.

12.1.2

January 12, 2022

  • Fix TypeScript transpilation.
  • Avoid throwing errors on unexpected option objects.

12.1.1

January 12, 2022

  • Fix Node 12/14 compatibility

12.1.0

January 12, 2022

  • Add overrideImportFromWithRoot option
  • Allow .mjs in importFrom
  • Converted to TypeScript
  • Correct typings for plugin options
  • Fix unicode support in custom property names

12.0.4

January 7, 2022

  • Fixed an issue that was causing synchronous mode to not being able to pick and transform properties that were added as part of the PostCSS flow. (#132)

12.0.2

January 2, 2022

  • Removed Sourcemaps from package tarball.
  • Moved CLI to CLI Package. See announcement.

12.0.1

December 16, 2021

  • Changed: now uses postcss-value-parser for parsing.
  • Updated: documentation

12.0.0

September 17, 2021

  • Updated: Support for PostCS 8+ (major).
  • Updated: Support for Node 12+ (major).

11.0.0

January 12, 2021

  • Added: Support for PostCSS v8.

10.0.0

September 18, 2020

  • Fixed: url-regex vulnerability (#228)
  • Breaking Change: Node v10+ now required

9.2.0

September 18, 2020

  • Added: Export variables to SCSS file (#212)
  • Added: Support for ".pcss" file resolution in importFrom (#211)
  • Fixed: Allow combined selectors (#199)
  • Fixed: Bug with spaces and commas in value (#222)
  • Fixed: importFrom priority (#222)

9.1.1

February 20, 2020

  • Fixed: Preserve spaces in multi-part values (#203)

9.1.0

July 15, 2019

  • Added: Support for preserving trailing comments within a declaration.

9.0.2

July 15, 2019

  • Updated: postcss-values-parser to 3.0.5 (patch)

9.0.1

June 20, 2019

  • Updated: postcss-values-parser to 3.0.4 (major)
  • Updated: Node 8+ compatibility (major)

This release is identical to v9.0.0, only npm publish failed to publish v9.0.0 and threw the following error:

You cannot publish over the previously published versions: 9.0.0.

I did not want this issue to distract me, and so I thoughtfully and impatiently published v9.0.0 as v9.0.1.

8.0.11

June 20, 2019

  • Added: Synchronous transforms when async is unnecessary (thank @eteeselink)
  • Fixed: Unexpected mutations to imported Custom Properties (thank @EECOLOR)
  • Fixed: Transforms throwing over unknown Custom Properties

8.0.10

April 1, 2019

  • Added: Support for ignoring lines and or blocks using postcss-custom-properties comments.
  • Updated: postcss to 7.0.14 (patch)
  • Updated: postcss-values-parser to 2.0.1 (patch)

8.0.9

November 5, 2018

  • Fixed: Issue with duplicate custom property usage within a declaration

8.0.8

October 2, 2018

  • Fixed: Issue with nested fallbacks

8.0.7

October 2, 2018

  • Fixed: Issue with parsing custom properties that are not strings
  • Updated: postcss to 7.0.5 (patch)

8.0.6

September 21, 2018

  • Fixed: Issue with regular :root and html properties not getting polyfilled
  • Updated: postcss to 7.0.3 (patch)

8.0.5

September 21, 2018

  • Fixed: Issue with multiple importFrom not getting combined

8.0.4

September 18, 2018

  • Fixed: Do not break on an empty importFrom object

8.0.3

September 18, 2018

  • Updated: PostCSS Values Parser 2

8.0.2

September 17, 2018

  • Fixed: Spacing is preserved before replaced variables.

8.0.1

September 17, 2018

  • Fixed: Workaround issue in postcss-values-parser incorrectly cloning nodes.

8.0.0

September 16, 2018

  • Added: New exportTo function to specify where to export custom properties to.
  • Added: New importFrom option to specify where to import custom properties from.
  • Added: Support for variables written within html
  • Added: Support for PostCSS v7.
  • Added: Support for Node v6+.
  • Removed: strict option, as using the fallback value isn’t necessarily more valid.
  • Removed: preserve: "computed" option, as there seems to be little use in preserving custom property declarations while removing all usages of them.
  • Removed: warnings and noValueNotifications options, as this should be the job of a linter tool.
  • Removed: variables option, which is now replaced by importFrom
  • Removed: appendVariables option, which is now replaced by exportTo
  • Fixed: Custom Properties in :root are not also transformed.
  • Fixed: Declarations that do not change are not duplicated during preserve.

7.0.0

February 16, 2018

  • Changed: preserve option defaults as true to reflect the browser climate
  • Changed: warnings option defaults to false to reflect the browser climate

6.3.1

February 16, 2018

  • Reverted: preserve and warnings option to be added in major release

6.3.0

February 15, 2018

  • Fixed: var() captures strictly var() functions and not xvar(), etc
  • Fixed: var() better captures whitespace within the function
  • Fixed: comments within declarations using var() are now preserved
  • Changed: preserve option defaults as true to reflect the browser climate
  • Changed: warnings option defaults to false to reflect the browser climate
  • Updated documentation

6.2.0

October 6, 2017

  • Added: noValueNotifications option (#71)
  • Fixed: Typo in prefixedVariables variable name (#77)

6.1.0

June 28, 2017

  • Added: Let "warnings" option silence all warnings (#67)
  • Dependencies update (postcss, balanced-match)

6.0.1

May 15, 2017

  • Fixed: incorrect export (#69)

6.0.0

May 12, 2017

  • Added: compatibility with postcss v6.x

5.0.2

February 1, 2017

  • Minor dependency update (#57)

5.0.1

April 22, 2016

  • Fixed: trailing space after custom property name causes duplicate empty property (#43)

5.0.0

August 25, 2015

  • Removed: compatibility with postcss v4.x
  • Added: compatibility with postcss v5.x

4.2.0

July 21, 2015

  • Added: warnings option allows you to disable warnings. (cssnext#186)

4.1.0

July 14, 2015

  • Added: plugin now returns itself in order to expose a setVariables function that allow you to programmatically change the variables. (#35)

4.0.0

June 17, 2015

  • Changed: messages and exceptions are now sent using postcss message API.

3.3.0

April 8, 2015

  • Added: preserve now support "computed" so only preserve resolved custom properties (see new option below)
  • Added: appendVariables allows you (when preserve is truthy) to append your variables as custom properties
  • Added: strict: false allows your to avoid too many fallbacks added in your CSS.

3.2.0

03 31, 2015

  • Added: JS defined variables are now resolved too (#22)

3.1.0

03 16, 2015

  • Added: variables defined in JS are now automatically prefixed with -- (0691784)

3.0.1

February 6, 2015

  • Fixed: logs now have filename back (#19)

3.0.0

January 20, 2015

  • Changed: upgrade to postcss 4 (#18)
  • Removed: some code that seems to be useless (16ff3c2)

2.1.1

December 2, 2014

  • Fixed: issue when multiples undefined custom properties are referenced (#16)

2.1.0

November 25, 2014

  • Added: enhanced exceptions & messages

2.0.0

November 12, 2014

  • Changed: upgrade to postcss 3

1.0.2

November 4, 2014

  • Fixed: more clear message for warning about custom prop used in non top-level :root

1.0.1

November 3, 2014

  • Fixed: warning about custom prop used in non :root

1.0.0

November 2, 2014

  • Added: warning when a custom prop is used in another place than :root
  • Added: handle !important

0.4.0

September 30, 2014

  • Added: JS-defined properties override CSS-defined

0.3.1

August 27, 2014

  • Added: nested custom properties usages are now correctly resolved
  • Changed: undefined var doesn't throw error anymore (just a console warning) & are kept as is in the output

0.3.0

August 26, 2014

  • Changed: fallback now are always added by default (see why)
  • Changed: map option renamed to variables

0.2.0

August 22, 2014

  • Added: map option
  • Changed: GNU style error message

0.1.0

August 1, 2014

✨ First release based on rework-vars v3.1.1