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@renovate renovate bot commented Aug 6, 2024

This PR contains the following updates:

Package Change Age Confidence
postcss (source) 8.3.8 -> 8.4.31 age confidence

GitHub Vulnerability Alerts

CVE-2023-44270

An issue was discovered in PostCSS before 8.4.31. It affects linters using PostCSS to parse external Cascading Style Sheets (CSS). There may be \r discrepancies, as demonstrated by @font-face{ font:(\r/*);} in a rule.

This vulnerability affects linters using PostCSS to parse external untrusted CSS. An attacker can prepare CSS in such a way that it will contains parts parsed by PostCSS as a CSS comment. After processing by PostCSS, it will be included in the PostCSS output in CSS nodes (rules, properties) despite being originally included in a comment.


Release Notes

postcss/postcss (postcss)

v8.4.31

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v8.4.30

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  • Improved source map performance (by Romain Menke).

v8.4.29

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  • Fixed Node#source.offset (by Ido Rosenthal).
  • Fixed docs (by Christian Oliff).

v8.4.28

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  • Fixed Root.source.end for better source map (by Romain Menke).
  • Fixed Result.root types when process() has no parser.

v8.4.27

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  • Fixed Container clone methods types.

v8.4.26

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  • Fixed clone methods types.

v8.4.25

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v8.4.24

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  • Fixed Plugin types.

v8.4.23

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  • Fixed warnings in TypeDoc.

v8.4.22

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  • Fixed TypeScript support with node16 (by Remco Haszing).

v8.4.21

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  • Fixed Input#error types (by Aleks Hudochenkov).

v8.4.20

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  • Fixed source map generation for childless at-rules like @layer.

v8.4.19

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  • Fixed whitespace preserving after AST transformations (by Romain Menke).

v8.4.18

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  • Fixed an error on absolute: true with empty sourceContent (by Rene Haas).

v8.4.17

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  • Fixed Node.before() unexpected behavior (by Romain Menke).
  • Added TOC to docs (by Mikhail Dedov).

v8.4.16

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  • Fixed Root AST migration.

v8.4.15

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  • Fixed AST normalization after using custom parser with old PostCSS AST.

v8.4.14

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  • Print “old plugin API” warning only if plugin was used (by @​zardoy).

v8.4.13

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  • Fixed append() error after using .parent (by Jordan Pittman).

v8.4.12

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  • Fixed package.funding to have same value between all PostCSS packages.

v8.4.11

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  • Fixed Declaration#raws.value type.

v8.4.10

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  • Fixed package.funding URL format.

v8.4.9

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  • Fixed package.funding (by Álvaro Mondéjar).

v8.4.8

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  • Fixed end position in empty Custom Properties.

v8.4.7

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  • Fixed Node#warn() type (by Masafumi Koba).
  • Fixed comment removal in values after ,.

v8.4.6

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  • Prevented comment removing when it change meaning of CSS.
  • Fixed parsing space in last semicolon-less CSS Custom Properties.
  • Fixed comment cleaning in CSS Custom Properties with space.
  • Fixed throwing an error on .root access for plugin-less case.

v8.4.5

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  • Fixed raws types to make object extendable (by James Garbutt).
  • Moved from Yarn 1 to pnpm.

v8.4.4

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v8.4.3

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v8.4.2

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  • Fixed Node#source.offset (by Ido Rosenthal).
  • Fixed docs (by Christian Oliff).

v8.4.1

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  • Fixed whitespace preserving after AST transformations (by Romain Menke).

v8.4.0: 8.4 “President Camio”

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President Camio seal

PostCSS 8.4 brought ranges for warnings and errors, smaller node_modules size, lazy parsing to avoid PostCSS does nothing warning, and TypeScript fixes.

Thanks to Sponsors

This release was possible thanks to our community.

Sponsored by Tailwind CSS Sponsored by ThemeIsle

If your company wants to support the sustainability of front-end infrastructure or wants to give some love to PostCSS, you can join our supporters by:

Rages for Errors and Warnings

@​adalinesimonian, the author of amazing Stylelint extension for VS Code, added ranges to errors and warnings.

result.warn(msg, { index })           // One character warning at index
result.warn(msg, { endIndex })        // Starts at node start, ends at endIndex
result.warn(msg, { index, endIndex }) // Starts at index, ends at endIndex
result.warn(msg, { start })           // Starts at start, ends at node end
result.warn(msg, { end })             // Starts at node start, ends at end
result.warn(msg, { start, end })      // Starts at start, ends at end
result.warn(msg, { word })            // Starts at word location, ends at word index + length

It will improve DX in the IDE extension.

Lazy Parsing

Previously, we found that many tools run PostCSS even if the developer didn’t pass any PostCSS plugins. Parsing is the most expensive step in CSS processing. It led to a waste of resources without any reason.

We tried to resolve the problem by adding a PostCSS does nothing warning. But it didn’t force tool authors to be more careful with user’s resources.

If PostCSS sees that tool call it without passing plugins (or changing parser/stringifier), PostCSS will not parse CSS (until toll will call Result#root). In 8.4, @​bogdan0083 (with the help of @​WilhelmYakunin) tries to solve the problem in another way. It allows us to save resources and remove the PostCSS does nothing warning.

// No plugins, we do not parse CSS
let result = await postcss().process(css, { from  })
result.css  // Is the same string passed to process()
result.map  // Special 1-to-1 source map
result.root // CSS will parsed only here

Install Size Reduction

With ≈60M weekly downloads, PostCSS has responsibility for the world’s resource spending.

Together with @​7rulnik we reduced source-map-js size. It is transitive dependency of PostCSS.

In 8.4, we moved to a fixed version of source-map-js, which reduced the postcss size in your node_modules from ≈1 MB to 0.3 MB. With the huge popularity of PostCSS, it will free a lot of resources on our CIs.

PostCSS install size reduction

Migration from Jest to uvu

@​kimoofey refactored all tests from the popular Jest framework to small and fast uvu.

It will not affect end-users. However, it reduced our node_modules size by 33 MB and made tests twice faster (yarn install & yarn unit: 24 → 13 seconds).

TypeScript Fixes

  • Added Processor types.
  • Added Stringifier types (by @​43081j).
  • Fixed types Root and Document in result values (by @​43081j).
  • Fixed Node#walkRules() types (by @​hudochenkov).

Other Changes

v8.3.11

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  • Remove debugging code.

v8.3.10

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  • Fixed Maximum call stack issue of some source maps (by Yeting Li).

v8.3.9

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  • Replaced nanocolors to picocolors.
  • Reduced package size.

Configuration

📅 Schedule: Branch creation - "" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.


  • If you want to rebase/retry this PR, check this box

This PR was generated by Mend Renovate. View the repository job log.

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sonarqubecloud bot commented Aug 6, 2024

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codecov bot commented Aug 6, 2024

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.15%. Comparing base (588ffe4) to head (ae4fd19).

Additional details and impacted files
@@           Coverage Diff           @@
##           master     #296   +/-   ##
=======================================
  Coverage   90.15%   90.15%           
=======================================
  Files          66       66           
  Lines         650      650           
  Branches       83       83           
=======================================
  Hits          586      586           
  Misses         64       64           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

@renovate renovate bot changed the title chore(deps): update dependency postcss to v8.4.31 [security] chore(deps): update dependency postcss to v8.4.31 [security] - autoclosed Dec 8, 2024
@renovate renovate bot closed this Dec 8, 2024
@renovate renovate bot deleted the renovate/npm-postcss-vulnerability branch December 8, 2024 18:26
@renovate renovate bot changed the title chore(deps): update dependency postcss to v8.4.31 [security] - autoclosed chore(deps): update dependency postcss to v8.4.31 [security] Dec 8, 2024
@renovate renovate bot reopened this Dec 8, 2024
@renovate renovate bot force-pushed the renovate/npm-postcss-vulnerability branch from d2397d6 to 03feb0d Compare December 8, 2024 21:57
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sonarqubecloud bot commented Dec 8, 2024

@renovate renovate bot force-pushed the renovate/npm-postcss-vulnerability branch 2 times, most recently from 047b539 to a33d457 Compare August 13, 2025 16:07
@renovate renovate bot force-pushed the renovate/npm-postcss-vulnerability branch from a33d457 to b28529e Compare August 19, 2025 12:48
@renovate renovate bot force-pushed the renovate/npm-postcss-vulnerability branch from b28529e to efad54a Compare August 31, 2025 10:14
@renovate renovate bot force-pushed the renovate/npm-postcss-vulnerability branch from efad54a to 0d97e61 Compare September 25, 2025 15:31
@renovate renovate bot force-pushed the renovate/npm-postcss-vulnerability branch from 0d97e61 to ae4fd19 Compare October 21, 2025 14:52
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