[Security] Bump postcss from 8.2.9 to 8.3.4

[dependabot-preview[bot]]

Bumps postcss from 8.2.9 to 8.3.4. This update includes a security fix.

Vulnerabilities fixed

Sourced from The GitHub Security Advisory Database.

Regular Expression Denial of Service in postcss The package postcss from 7.0.0 and before 8.2.10 are vulnerable to Regular Expression Denial of Service (ReDoS) during source map parsing.

Affected versions: >= 7.0.0 < 8.2.10

Release notes

Sourced from postcss's releases.

8.3.4

• Fixed broken AST detection.

8.3.3

• Fixed broken AST on postcss dependency duplication in custom parsers.

8.3.2

• Update changelog.

8.3.1

• Fixed false positives PostCSS does nothing warning on syntax option.

8.3 “Duke Murmur”

PostCSS 8.3 improved source map parsing performance, added Node#assign() shortcut, and experimental Document node to AST.

Thanks to Sponsors

This release was possible thanks to our community.

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:

• Tidelift with a Spotify-like subscription model supporting all projects from your lock file.
• Direct donations in PostCSS & Autoprefixer Open Collective.

Source Map Performance

Because PostCSS needs synchronous API, we can’t move from the old `source-map 0.6 to 0.7 (many other open-source projects too).

@​7rulnik forked source-map 0.6 to source-map-js and back-ported performance improvements from 0.7. In 8.3 we switched from source-map to this source-map-js fork.

You map see 4x performance improvements in parsing map from processing step before PostCSS (for instance, Sass).

Document Nodes

Thanks to @​gucong3000, PostCSS already parse CSS from HTML and JS files (CSS-in-JS templates and objects).

But his plugin need big updates. @​hudochenkov from stylelint team decided to create new parsers for styles inside CSS-in-JS, HTML, and Markdown.

He suggested adding new Document node type to PostCSS AST to keep multiple Root nodes inside and JS/HTML/Markdown code blocks between these style blocks.

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Changelog

Sourced from postcss's changelog.

8.3.4

• Fixed broken AST detection.

8.3.3

• Fixed broken AST on postcss dependency duplication in custom parsers.

8.3.2

• Update changelog.

8.3.1

• Fixed false positives PostCSS does nothing warning on syntax option.

8.3 “Duke Murmur”

• Added Node#assign() shortcut (by Jonathan Neal).
• Added experimental Document node to AST (by Aleks Hudochenkov).
• Moved to faster fork of source-map (by Valentin Semirulnik).

8.2.15

• Fixed list type definitions (by @​n19htz).

8.2.14

• Removed source-map from client-side bundle (by Barak Igal).

8.2.13

• Fixed ReDoS vulnerabilities in source map parsing (by Yeting Li).

8.2.12

• Fixed package.json exports.

8.2.11

• Fixed DEP0148 warning in Node.js 16.
• Fixed docs (by @​semiromid).

8.2.10

• Fixed ReDoS vulnerabilities in source map parsing.
• Fixed webpack 5 support (by Barak Igal).
• Fixed docs (by Roeland Moors).

Commits

• c7bae29 Release 8.3.4 version
• 8b4a8b1 Fix Node[my] hack
• 7ea0c9b Release 8.3.3 version
• ff6abab Fix Symbol description
• e51efa0 Fix import order
• 714c5c6 Require PostCSS peer dependency from parser
• d8edfed Hot fix for broken isClean on AST dublication
• 2da5501 Update dependencies
• 026416d Release 8.3.2 version
• 6c30324 Merge pull request #1600 from postcss/dependabot/npm_and_yarn/lodash-4.17.21
• Additional commits viewable in compare view

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[dependabot-preview[bot]]

Superseded by #1122.