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build(deps-dev): bump jsdom from 28.1.0 to 29.0.0#54

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dependabot/npm_and_yarn/jsdom-29.0.0
Mar 16, 2026
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build(deps-dev): bump jsdom from 28.1.0 to 29.0.0#54
mergify[bot] merged 1 commit intomasterfrom
dependabot/npm_and_yarn/jsdom-29.0.0

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@dependabot dependabot bot commented on behalf of github Mar 16, 2026

Bumps jsdom from 28.1.0 to 29.0.0.

Release notes

Sourced from jsdom's releases.

v29.0.0

Breaking changes:

  • Node.js v22.13.0+ is now the minimum supported v22 version (was v22.12.0+).

Other changes:

  • Overhauled the CSSOM implementation, replacing the @acemir/cssom and cssstyle dependencies with fresh internal implementations built on webidl2js wrappers and the css-tree parser. Serialization, parsing, and API behavior is improved in various ways, especially around edge cases.
  • Added CSSCounterStyleRule and CSSNamespaceRule to jsdom Windows.
  • Added cssMediaRule.matches and cssSupportsRule.matches getters.
  • Added proper media query parsing in MediaList, using css-tree instead of naive comma-splitting. Invalid queries become "not all" per spec.
  • Added cssKeyframeRule.keyText getter/setter validation.
  • Added cssStyleRule.selectorText setter validation: invalid selectors are now rejected.
  • Added styleSheet.ownerNode, styleSheet.href, and styleSheet.title.
  • Added bad port blocking per the fetch specification, preventing fetches to commonly-abused ports.
  • Improved Document initialization performance by lazily initializing the CSS selector engine, avoiding ~0.5 ms of overhead per Document. (@​thypon)
  • Fixed a memory leak when stylesheets were removed from the document.
  • Fixed CSSStyleDeclaration modifications to properly trigger custom element reactions.
  • Fixed nested @media rule parsing.
  • Fixed CSSStyleSheet's "disallow modification" flag not being checked in all mutation methods.
  • Fixed XMLHttpRequest's response getter returning parsed JSON during the LOADING state instead of null.
  • Fixed getComputedStyle() crashing in XHTML documents when stylesheets contained at-rules such as @page or @font-face.
  • Fixed a potential hang in synchronous XMLHttpRequest caused by a race condition with the worker thread's idle timeout.
Changelog

Sourced from jsdom's changelog.

29.0.0

Breaking changes:

  • Node.js v22.13.0+ is now the minimum supported v22 version (was v22.12.0+).

Other changes:

  • Overhauled the CSSOM implementation, replacing the @acemir/cssom and cssstyle dependencies with fresh internal implementations built on webidl2js wrappers and the css-tree parser. Serialization, parsing, and API behavior is improved in various ways, especially around edge cases.
  • Added CSSCounterStyleRule and CSSNamespaceRule to jsdom Windows.
  • Added cssMediaRule.matches and cssSupportsRule.matches getters.
  • Added proper media query parsing in MediaList, using css-tree instead of naive comma-splitting. Invalid queries become "not all" per spec.
  • Added cssKeyframeRule.keyText getter/setter validation.
  • Added cssStyleRule.selectorText setter validation: invalid selectors are now rejected.
  • Added styleSheet.ownerNode, styleSheet.href, and styleSheet.title.
  • Added bad port blocking per the fetch specification, preventing fetches to commonly-abused ports.
  • Improved Document initialization performance by lazily initializing the CSS selector engine, avoiding ~0.5 ms of overhead per Document. (thypon)
  • Fixed a memory leak when stylesheets were removed from the document.
  • Fixed CSSStyleDeclaration modifications to properly trigger custom element reactions.
  • Fixed nested @media rule parsing.
  • Fixed CSSStyleSheet's "disallow modification" flag not being checked in all mutation methods.
  • Fixed XMLHttpRequest's response getter returning parsed JSON during the LOADING state instead of null.
  • Fixed getComputedStyle() crashing in XHTML documents when stylesheets contained at-rules such as @page or @font-face.
  • Fixed a potential hang in synchronous XMLHttpRequest caused by a race condition with the worker thread's idle timeout.
Commits
  • 00522ce Version 29.0.0
  • a217975 Use undici's request() API for XHR dispatching
  • f29722d Convert CSSStyleDeclaration to webidl2js
  • 4aaacc6 Merge in cssstyle and replace @acemir/cssom
  • 6c2769a Remove unused http(s)-proxy-agent dependencies
  • eba96b5 Update domSelector
  • 54f9995 Use --fgrep for npm run test:tuwpt:browser
  • 15e7664 Use stable ports for test:tuwpt:browser
  • 7410bdb Suppress informational WPT output when using the min reporter
  • c44377e Lazily initialize DOMSelector
  • Additional commits viewable in compare view
Install script changes

This version modifies prepare script that runs during installation. Review the package contents before updating.


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Bumps [jsdom](https://github.com/jsdom/jsdom) from 28.1.0 to 29.0.0.
- [Release notes](https://github.com/jsdom/jsdom/releases)
- [Changelog](https://github.com/jsdom/jsdom/blob/v29.0.0/Changelog.md)
- [Commits](jsdom/jsdom@v28.1.0...v29.0.0)

---
updated-dependencies:
- dependency-name: jsdom
  dependency-version: 29.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot bot added dependencies Pull requests that update a dependency file javascript Pull requests that update javascript code labels Mar 16, 2026
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codecov bot commented Mar 16, 2026

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (9ec9c16) to head (7cf7c18).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files
@@            Coverage Diff            @@
##            master       #54   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           17        17           
  Lines          284       284           
  Branches        73        73           
=========================================
  Hits           284       284           

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@mergify mergify bot merged commit e752706 into master Mar 16, 2026
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@mergify mergify bot deleted the dependabot/npm_and_yarn/jsdom-29.0.0 branch March 16, 2026 11:37
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