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Bump jsdom (major) - #1807

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@code-infra-renovate code-infra-renovate Bot commented Aug 23, 2026

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This PR contains the following updates:

Package Change Age Confidence
@types/jsdom (source) 28.0.330.0.0 age confidence
jsdom 28.1.030.0.1 age confidence
jsdom ^28.1.0^30.0.1 age confidence

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Some dependencies could not be looked up. Check the Dependency Dashboard for more information.


Release Notes

jsdom/jsdom (jsdom)

v30.0.1

Compare Source

  • Fixed getComputedStyle() with calc() and other functions throwing an exception, which regressed in v30.0.0. (@​asamuzaK)
  • Sped up up range operations on large documents (@​leonidaz)

v30.0.0

Compare Source

Breaking changes:

  • Node.js minimum version raised to ^22.22.2 || ^24.15.0 || >=26.0.0.

Other changes:

  • Added CSS.escape() and CSS.supports() functions. (@​asamuzaK)
  • Added 'background-position-x' and 'background-position-y' CSS properties. (@​olagokemills)
  • Fixed getComputedStyle() to convert length values into pixels. (@​asamuzaK)
  • Fixed CSS function serialization, e.g., in the return value of getPropertyValue(). (@​asamuzaK)
  • Fixed the type of error thrown by document.evaluate() (@​dokson)

v29.1.1

Compare Source

  • Fixed 'border-radius' computed style serialization. (@​asamuzaK)
  • Fixed computed style computation when using 'background-origin' and 'background-clip' CSS properties. (@​asamuzaK)
  • Significantly optimized initial calls to getComputedStyle(), before the cache warms up. (@​asamuzaK)

v29.1.0

Compare Source

  • Added basic support for the ratio CSS type. (@​asamuzaK)
  • Fixed getComputedStyle() sometimes returning outdated results after CSS was modified. (@​asamuzaK)

v29.0.2

Compare Source

  • Significantly improved and sped up getComputedStyle(). Computed value rules are now applied across a broader set of properties, and include fixes related to inheritance, defaulting keywords, custom properties, and color-related values such as currentcolor and system colors. (@​asamuzaK)
  • Fixed CSS 'background' and 'border' shorthand parsing. (@​asamuzaK)

v29.0.1

Compare Source

  • Fixed CSS parsing of 'border', 'background', and their sub-shorthands containing keywords or var(). (@​asamuzaK)
  • Fixed getComputedStyle() to return a more functional CSSStyleDeclaration object, including indexed access support, which regressed in v29.0.0.

v29.0.0

Compare Source

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.

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code-infra-dashboard Bot commented Aug 23, 2026

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Details of bundle changes

Performance

Total duration: 19.79 ms +1.72 ms(+9.5%) | Renders: 5 (+0) | Paint: 70.56 ms +10.04 ms(+16.6%)

Test Duration Renders
HeavyList mount 11.80 ms +1.55 ms(+15.1%) 1 (+0)
custom scalar + discrete metrics 0.00 ms 0 (+0)

5 tests within noise — details

Metric alarms

Test Metric Change
HeavyList mount bench:paint 🔺 +10.39 ms
custom scalar + discrete metrics fib_duration 🔺 +0.07 ms

Check out the code infra dashboard for more information about this PR.

@github-actions github-actions Bot added the PR: out-of-date The pull request has merge conflicts and can't be merged. label Aug 24, 2026
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@github-actions github-actions Bot added PR: out-of-date The pull request has merge conflicts and can't be merged. and removed PR: out-of-date The pull request has merge conflicts and can't be merged. labels Aug 24, 2026
@github-actions github-actions Bot removed the PR: out-of-date The pull request has merge conflicts and can't be merged. label Aug 26, 2026
@github-actions github-actions Bot added the PR: out-of-date The pull request has merge conflicts and can't be merged. label Aug 31, 2026
@github-actions github-actions Bot removed the PR: out-of-date The pull request has merge conflicts and can't be merged. label Aug 31, 2026
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