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@renovate renovate bot commented Oct 1, 2025

This PR contains the following updates:

Package Change Age Confidence
jsdom ^24.0.0^27.0.0 age confidence
@types/jsdom (source) ^21.1.1^27.0.0 age confidence

Release Notes

jsdom/jsdom (jsdom)

v27.4.0

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  • Added TextEncoder and TextDecoder.
  • Improved decoding of HTML bytes by using the new @exodus/bytes package; it is now much more correct. (ChALkeR)
  • Improved decoding of XML bytes to use UTF-8 more often, instead of sniffing for <meta charset> or using the parent frame's encoding.
  • Fixed a memory leak when Ranges were used and then the elements referred to by those ranges were removed.

v27.3.0

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  • Improved CSS parsing and CSSOM object APIs via updates to @acemir/cssom. (acemir)

v27.2.0

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  • Added CSSGroupingRule, CSSNestedDeclarations, CSSConditionRule, CSSContainerRule, CSSScopeRule, CSSSupportsRule, CSSLayerBlockRule, and CSSLayerStatementRule to jsdom Windows. (acemir)
  • Improved CSS parsing and CSSOM object APIs via updates to @acemir/cssom. (acemir)
  • Fixed @import-ed stylesheets to be properly exposed to CSSOM, and not to overwrite the sheet created from the <link> or <style> element. (acemir)

v27.1.0

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  • Improved CSS parsing by switching to @acemir/cssom, including support for nested selectors, nested declarations, layer statements, and improved at-rule validation. (acemir)
  • Fixed some selector cache invalidation issues where changes to attributes were not being picked up. (asamuzaK)
  • Fixed package.json "engines" field to reflect the new minimum Node.js versions needed to run jsdom, as noted in the changelog for v27.0.1.

v27.0.1

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  • Fixed some regressions in CSS selectors. Most such regression fixes were done in a minor update of a dependency, and thus available for all fresh installs of v27.0.0. However, one related to class="" attribute changes is only possible with a new version of jsdom. (asamuzaK)

v27.0.0

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Changes since 26.1.0
  • Node.js v20 is now the minimum supported version.
  • Added a variety of event constructors, even though we do not implement their associated specifications or ever fire them: BeforeUnloadEvent, BlobEvent, DeviceMotionEvent (omitting requestPermission()), DeviceOrientationEvent (omitting requestPermission()), PointerEvent, PromiseRejectionEvent, and TransitionEvent.
  • Added movementX and movementY to MouseEvent. (These are from the Pointer Lock specification, the rest of which is not implemented.)
  • Added customElements.getName(). (mash-graz)
  • Updated the virtual console:
    • "jsdomError" events are now documented, with specific type properties and other properties that depend on the type.
    • sendTo() was renamed to forwardTo().
    • The jsdomErrors option to forwardTo() can be used to control which errors are sent to the Node.js console. This replaces the previous omitJSDOMErrors boolean option.
    • "jsdomError"s for failed XMLHttpRequest fetches are no longer emitted.
    • The values that are printed when forwarding "jsdomError"s to the Node.js console are streamlined.
  • Switched our CSS selector engine from nwsapi to @asamuzakjp/dom-selector, closing over 20 selector-related bugs.
  • Upgraded tough-cookie, which now considers URLs like http://localhost/ to be secure contexts (per the spec), and thus will return Secure-flagged cookies for such URLs. (colincasey)
  • Upgraded cssstyle, which brings along many improvements and fixes to the CSSStyleDeclaration object and its properties.
  • Updated the user agent stylesheet to be derived from the HTML Standard, instead of from an old revision of Chromium.
  • Changed element.click() to fire a PointerEvent instead of a MouseEvent.
  • Changed certain events to be passive by default.
  • Changed the <input> element's pattern="" attribute to use the v regular expression flag, instead of u.
  • Fixed many specification conformance issues with the Window object, including named properties and changing various data properties to accessor properties.
  • Fixed document.createEvent() to accept a more correct set of event names.
  • Fixed the ElementInternals accessibility getters and setters. (They were introduced in v23.1.0, but due to inadequate test coverage never actually worked.)
  • Fixed using Object.defineProperty() on certain objects, such as HTMLSelectElement instances.
  • Fixed jsdom.reconfigure({ url }) not updating document.baseURI or properties derived from it. (This regressed in v26.1.0.)
  • Fixed CSS system colors, as well as the initial, inherit, and unset keywords, to resolve correctly. (asamuzaK)
  • Fixed CSS display style resolution. (asamuzaK)
Changes since 27.0.0-beta.3
  • Upgraded cssstyle, which brings along various CSS parsing fixes.

v26.1.0

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  • Added at least partial support for various SVG elements and their classes: <defs> (SVGDefsElement), <desc> (SVGDescElement), <g> (SVGGElement), <metadata> (SVGMetadataElement), <switch> (SVGSwitchElement), and <symbol> (SVGSymbolElement).
  • Added SVGAnimatedPreserveAspectRatio and SVGAnimatedRect, including support in the reflection layer.
  • Added the SVGSVGElement createSVGRect() method, and the SVGRect type (which is distinct from DOMRect.)
  • Added indexed property support to HTMLFormElement.
  • Updated the SVGElement viewportElement() method to correctly establish the viewport based on ancestor elements.
  • Removed the now-bloated form-data dependency in favor of our own smaller implementation of multipart/form-data serialization. No functional changes are expected.
  • Various performance improvements, caches, microoptimizations, and deferred object creation.

v26.0.0

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Breaking change: canvas peer dependency requirement has been upgraded from v2 to v3. (sebastianwachter)

Other changes:

  • Added AbortSignal.any(). (jdbevan)
  • Added initial support for form-associated custom elements, in particular making them labelable and supporting the ElementInternals labels property. The form-associated callbacks are not yet supported. (hesxenon)
  • Updated whatwg-url, adding support for URL.parse().
  • Updated cssstyle and rrweb-cssom, to improve CSS parsing capabilities.
  • Updated nwsapi, improving CSS selector matching.
  • Updated parse5, fixing a bug around <noframes> elements and HTML entity decoding.
  • Fixed JSDOM.fromURL() to properly reject the returned promise if the server redirects to an invalid URL, instead of causing an uncaught exception.

v25.0.1

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  • Updated dependencies, notably tough-cookie, which no longer prints a deprecation warning.

v25.0.0

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This major release changes the prototype of a jsdom's EventTarget.prototype to point to the Object.prototype inside the jsdom, instead of pointing to the Node.js Object.prototype. Thus, the prototype chain of Window stays entirely within the jsdom, never crossing over into the Node.js realm.

This only occurs when runScripts is set to non-default values of "dangerously" or "outside-only", as with the default value, there is no separate Object.prototype inside the jsdom.

This will likely not impact many programs, but could cause some changes in instanceof behavior, and so out of an abundance of caution, we're releasing it as a new major version.


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@renovate renovate bot added the renovate label Oct 1, 2025
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⚠️ No Changeset found

Latest commit: 3d4fb7c

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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@renovate renovate bot force-pushed the renovate/jsdom-27.x branch from 34a7dbe to 06233c4 Compare October 8, 2025 22:51
@renovate renovate bot force-pushed the renovate/jsdom-27.x branch from 06233c4 to 580b0ac Compare October 25, 2025 04:16
@renovate renovate bot force-pushed the renovate/jsdom-27.x branch from 580b0ac to 3679e6b Compare November 9, 2025 03:45
@renovate renovate bot force-pushed the renovate/jsdom-27.x branch 2 times, most recently from ba1489e to f36bba6 Compare November 19, 2025 16:06
@renovate renovate bot force-pushed the renovate/jsdom-27.x branch from f36bba6 to 87712d0 Compare December 3, 2025 23:11
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@renovate renovate bot force-pushed the renovate/jsdom-27.x branch 2 times, most recently from ab7c7cf to 971dce5 Compare January 1, 2026 12:14
@renovate renovate bot force-pushed the renovate/jsdom-27.x branch from 971dce5 to 3d4fb7c Compare January 9, 2026 04:11
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