deps: bump jsdom from 28.1.0 to 29.0.0

[dependabot]

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

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Summary by cubic

Upgrade jsdom from 28.1.0 to 29.0.0 for more accurate CSSOM, stricter selector/media query validation, and spec-compliant XHR/fetch in tests. Dev-only change; app code is unchanged.

• Migration
  • Ensure Node 20.19+ or 22.13+ (or 24+) in local/CI.
  • Tests with invalid CSS selectors/media queries may now fail due to stricter validation.
  • Fetch/XHR now block bad ports per spec; avoid restricted ports in test servers.

^{Written for commit 7fb0dee. Summary will update on new commits.}

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Project	Deployment	Actions	Updated (UTC)
continuum	Error		Mar 16, 2026 4:27pm

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