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ℹ️ Note

This PR body was truncated due to platform limits.

This PR contains the following updates:

Package	Change	Age	Confidence
@vitest/coverage-v8 (source)	^3.2.4 → ^4.0.0
vitest (source)	^3.2.4 → ^4.0.0

---

Release Notes

vitest-dev/vitest (@​vitest/coverage-v8)

v4.1.9

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🐞 Bug Fixes

• Fix importOriginal with optimizer and query import [backport to v4] - by Hiroshi Ogawa, David Harris, Codexand Vladimir in #​10546 (a5180)
• browser:
  • Wait for orchestrator readiness before resolving browser sessions [backport to v4] - by Vladimir and Séamus O'Connor in #​10555 (7fb29)
  • Wait for iframe tester readiness before preparing [backport to v4] - by Vladimir and Séamus O'Connor in #​10497 and #​10556 (fbc62)
• mocker:
  • Hoist vi.mock() for vite-plus/test imports [backport to v4] - by Hiroshi Ogawa, LongYinan, Claude Opus 4.8 and Vladimir in #​10548 (2c955)
• pool:
  • Prevent test run hang on worker crash [backport to v4] - by Ari Perkkiö and Jattioui Ismail in #​10543 and #​10564 (934b0)

View changes on GitHub

v4.1.8

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   🐞 Bug Fixes

• browser:
  • Disable client cdp API when allowWrite/allowExec: false [backport to v4]  -  by @​hi-ogawa and Codex in #​10450 (e4067)
  • Remove orphaned Playwright route when same module is mocked via multiple ids [backport to v4]  -  by @​toxik and @​Zelys-DFKH in #​10474 (675b4)

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v4.1.7

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   🐞 Bug Fixes

• runner: Limit concurrency per task branch in addition to per leaf callbacks (backport)  -  by @​hi-ogawa in #​10384 (4f0f2)

    View changes on GitHub

v4.1.6

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   🐞 Bug Fixes

• browser: Provide project reference in ToMatchScreenshotResolvePath  -  by @​macarie and @​sheremet-va in #​10138 (31882)
• Global sequence.concurrent: true with top-level test(..., { concurrent: false }) + depreacte sequential test API and options  -  by @​hi-ogawa, Codex and @​sheremet-va in #​10196 (2847d)
• browser: Simplify orchestrator otel carrier  -  by @​hi-ogawa in #​10285 (18af9)

   🏎 Performance

• Stringify diff objects only once  -  by @​sheremet-va in #​10276 (9f7b1)

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v4.1.5

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   🚀 Experimental Features

• coverage: Istanbul to support instrumenter option  -  by @​BartWaardenburg and @​AriPerkkio in #​10119 (0e0ff)

   🐞 Bug Fixes

• --project negation excludes browser instances  -  by @​felamaslen in #​10131 (9423d)
• Project color label on html reporter  -  by @​hi-ogawa in #​10142 (596f7)
• Fix vi.defineHelper called as object method  -  by @​hi-ogawa in #​10163 (122c2)
• Alias agent reporter to minimal  -  by @​sheremet-va in #​10157 (663b9)
• Respect diff config options in soft assertions  -  by @​Copilot, sheremet-va and @​sheremet-va in #​8696 (9787d)
• Respect diff config options in soft assertions "  -  by @​sheremet-va in #​8696 (7dc6d)
• ast-collect: Recognize _vi_import prefix in static test discovery  -  by @​Yejneshwar in #​10129 (32546)
• coverage: Descriptive error message when reports directory is removed during test run  -  by @​DaveT1991 and @​AriPerkkio in #​10117 (14133)
• snapshot: Increase default snapshot max output length  -  by @​hi-ogawa and Codex in #​10150 (21e66)
• ui: Fix jsx/tsx syntax highlight  -  by @​hi-ogawa in #​10152 (f1b1f)
• web-worker: Support MessagePort objects referenced inside postMessage data  -  by @​whitphx and Claude Opus 4.6 (1M context) in #​9927 and #​10124 (7ad7d)
• api: Make test-specification options writable  -  by @​sheremet-va in #​10154 (6abd5)

    View changes on GitHub

v4.1.4

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   🚀 Features

• coverage:
  • Default to text reporter skipFull if agent detected  -  by @​hi-ogawa in #​10018 (53757)
• experimental:
  • Expose assertion as a public field  -  by @​sheremet-va in #​10095 (a120e)
  • Support aria snapshot  -  by @​hi-ogawa, Claude Opus 4.6 (1M context), @​AriPerkkio, Codex and @​sheremet-va in #​9668 (d4fbb)
• reporter:
  • Add filterMeta option to json reporter  -  by @​nami8824 and @​sheremet-va in #​10078 (b77de)

   🐞 Bug Fixes

• Use "black" foreground for labeled terminal message to ensure contrast  -  by @​hi-ogawa in #​10076 (203f0)
• Make expect(..., message) consistent as error message prefix  -  by @​hi-ogawa and Codex in #​10068 (a1b5f)
• Do not hoist imports whose names match class properties .  -  by @​SunsetFi in #​10093 and #​10094 (0fc4b)
• browser: Spread user server options into browser Vite server in project  -  by @​GoldStrikeArch in #​10049 (65c9d)

    View changes on GitHub

v4.1.3

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   🚀 Experimental Features

• Add experimental.preParse flag  -  by @​sheremet-va in #​10070 (78273)
• Support browser.locators.exact option  -  by @​sheremet-va in #​10013 (48799)
• Add TestAttachment.bodyEncoding  -  by @​hi-ogawa in #​9969 (89ca0)
• Support custom snapshot matcher  -  by @​hi-ogawa, Claude Sonnet 4.6 and Codex in #​9973 (59b0e)

   🐞 Bug Fixes

• Advance fake timers with expect.poll interval  -  by @​hi-ogawa and Claude Sonnet 4.6 in #​10022 (3f5bf)
• Add @vitest/coverage-v8 and @vitest/coverage-istanbul as optional dependency  -  by @​alan-agius4 in #​10025 (146d4)
• Fix defineHelper for webkit async stack trace + update playwright 1.59.0  -  by @​hi-ogawa in #​10036 (5a5fa)
• Fix suite hook throwing errors for unused auto test-scoped fixture  -  by @​hi-ogawa and Claude Sonnet 4.6 in #​10035 (39865)
• expect:
  • Remove JestExtendError.context from verbose error reporting  -  by @​hi-ogawa in #​9983 (66751)
  • Don't leak "runner" types  -  by @​sheremet-va in #​10004 (ec204)
• snapshot:
  • Fix flagging obsolete snapshots for snapshot properties mismatch  -  by @​hi-ogawa and Claude Sonnet 4.6 in #​9986 (6b869)
  • Export custom snapshot matcher helper from vitest  -  by @​hi-ogawa and Codex in #​10042 (691d3)
• ui:
  • Don't leak vite types  -  by @​sheremet-va in #​10005 (fdff1)
• vm:
  • Fix external module resolve error with deps optimizer query  -  by @​hi-ogawa and Claude Sonnet 4.6 in #​10024 (9dbf4)

    View changes on GitHub

v4.1.2

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This release bumps Vitest's flatted version and removes version pinning to resolve flatted's CVE related issues (#​9975).

   🐞 Bug Fixes

• Don't resolve setupFiles from parent directory  -  by @​hi-ogawa in #​9960 (7aa93)
• Ensure sequential mock/unmock resolution  -  by @​hi-ogawa and Claude Opus 4.6 in #​9830 (7c065)
• browser: Take failure screenshot if toMatchScreenshot can't capture a stable screenshot  -  by @​macarie in #​9847 (faace)
• coverage: Correct coverageConfigDefaults values and types  -  by @​Arthie in #​9940 (b3c99)
• pretty-format: Fix output limit over counting  -  by @​hi-ogawa in #​9965 (d3b7a)
• Disable colors if agent is detected  -  by @​sheremet-va and @​AriPerkkio in #​9851 (6f97b)

    View changes on GitHub

v4.1.1

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   🚀 Features

• experimental:
  • Expose matchesTagsFilter to test if the current filter matches tags  -  by @​sheremet-va in #​9913 (eec53)
  • Introduce experimental.vcsProvider  -  by @​sheremet-va in #​9928 (56115)

   🐞 Bug Fixes

• Mark TestProject.testFilesList internal properly  -  by @​sapphi-red in #​9867 (54f26)
• Detect fixture that returns without calling use  -  by @​oilater in #​9831 and #​9861 (633ae)
• Drop vite 8.beta support  -  by @​AriPerkkio in #​9862 (b78f5)
• Type regression in vi.mocked() static class methods  -  by @​purepear and @​hi-ogawa in #​9857 (90926)
• Properly re-evaluate actual modules of mocked external  -  by @​hi-ogawa in #​9898 (ae5ec)
• Preserve coverage report when html reporter overlaps  -  by @​hi-ogawa in #​9889 (2d81a)
• Provide vi.advanceTimers to the preview provider  -  by @​sheremet-va in #​9891 (1bc3e)
• Don't leak event listener in playwright provider  -  by @​sheremet-va in #​9910 (d9355)
• Open browser in --standalone mode without running tests  -  by @​sheremet-va in #​9911 (e78ad)
• Guard disposable and optional body  -  by @​sheremet-va in #​9912 (6fdb2)
• Resolve retry.condition RegExp serialization issue  -  by @​nstepien and @​hi-ogawa in #​9942 (7b605)
• collect:
  • Don't treat extra props on test return as tests  -  by @​sheremet-va in #​9871 (141e7)
• coverage:
  • Simplify provider types  -  by @​AriPerkkio in #​9931 (aaf9f)
  • Load built-in provider without module runner  -  by @​AriPerkkio in #​9939 (bf892)
• expect:
  • Soft assertions continue after .resolves/.rejects promise errors  -  by @​mixelburg, Maks Pikov, Claude Opus 4.6 (1M context) and @​hi-ogawa in #​9843 (6d74b)
  • Fix sinon-chai style API  -  by @​hi-ogawa in #​9943 (0f08d)
• pretty-format:
  • Limit output for large object  -  by @​hi-ogawa and Claude Opus 4.6 (1M context) in #​9949 (0d5f9)

    View changes on GitHub

v4.1.0

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Vitest 4.1 is out!

This release page lists all changes made to the project during the 4.1 beta. To get a review of all the new features, read our blog post.

   🚀 Features

• Return a disposable from doMock()  -  by @​kirkwaiblinger in #​9332 (e3e65)
• Added chai style assertions  -  by @​ronnakamoto and @​sheremet-va in #​8842 (841df)
• Update to sinon/fake-timers v15 and add setTickMode to timer controls  -  by @​atscott and @​sheremet-va in #​8726 (4b480)
• Expose matcher types  -  by @​sheremet-va in #​9448 (3e4b9)
• Add toTestSpecification to reported tasks  -  by @​sheremet-va in #​9464 (1a470)
• Show a warning if vi.mock or vi.hoisted are declared outside of top level of the module  -  by @​sheremet-va in #​9387 (5db54)
• Track and display expectedly failed tests (.fails) in UI and CLI  -  by @​Copilot, sheremet-va and @​sheremet-va in #​9476 (77d75)
• Support tags  -  by @​sheremet-va in #​9478 (de7c8)
• Implement aroundEach and aroundAll hooks  -  by @​sheremet-va in #​9450 (2a8cb)
• Stabilize experimental features  -  by @​sheremet-va in #​9529 (b5fd2)
• Accept new or all in --update flag  -  by @​sheremet-va in #​9543 (a5acf)
• Support meta in test options  -  by @​sheremet-va in #​9535 (7d622)
• Support type inference with a new test.extend syntax  -  by @​sheremet-va in #​9550 (e5385)
• Support vite 8 beta, fix type issues in the config with different vite versions  -  by @​sheremet-va in #​9587 (99028)
• Add assertion helper to hide internal stack traces  -  by @​hi-ogawa and Claude Opus 4.6 in #​9594 (eeb0a)
• Store failure screenshots using artifacts API  -  by @​macarie in #​9588 (24603)
• Allow vitest list to statically collect tests instead of running files to collect them  -  by @​sheremet-va in #​9630 (7a8e7)
• Add --detect-async-leaks  -  by @​AriPerkkio in #​9528 (c594d)
• Implement mockThrow and mockThrowOnce  -  by @​thor-juhasz and @​sheremet-va in #​9512 (61917)
• Support update: "none" and add docs about snapshots behavior on CI  -  by @​hi-ogawa in #​9700 (05f18)
• Support playwright launchOptions with connectOptions  -  by @​hi-ogawa in #​9702 (f0ff1)
• Add page/locator.mark API to enhance playwright trace  -  by @​hi-ogawa in #​9652 (d0ee5)
• api:
  • Support tests starting or ending with test in experimental_parseSpecification  -  by @​jgillick and Jeremy Gillick in #​9235 (2f367)
  • Add filters to createSpecification  -  by @​sheremet-va in #​9336 (c8e6c)
  • Expose runTestFiles as alternative to runTestSpecifications  -  by @​sheremet-va in #​9443 (43d76)
  • Add allowWrite and allowExec options to api  -  by @​sheremet-va in #​9350 (20e00)
  • Allow passing down test cases to toTestSpecification  -  by @​sheremet-va in #​9627 (6f17d)
• browser:
  • Add userEvent.wheel API  -  by @​macarie in #​9188 (66080)
  • Add filterNode option to prettyDOM for filtering browser assertion error output  -  by @​Copilot, sheremet-va and @​sheremet-va in #​9475 (d3220)
  • Support playwright persistent context  -  by @​hi-ogawa, Claude Opus 4.6 and @​sheremet-va in #​9229 (f865d)
  • Added detailsPanelPosition option and button  -  by @​shairez in #​9525 (c8a31)
  • Use BlazeDiff instead of pixelmatch  -  by @​macarie in #​9514 (30936)
  • Add findElement and enable strict mode in webdriverio and preview  -  by @​sheremet-va in #​9677 (c3f37)
• cli:
  • Add @​bomb.sh/tab completions  -  by @​AmirSa12 and @​sheremet-va in #​8639 (200f3)
• coverage:
  • Support ignore start/stop ignore hints  -  by @​AriPerkkio in #​9204 (e59c9)
  • Add coverage.changed option to report only changed files  -  by @​kykim00 and @​AriPerkkio in #​9521 (1d939)
• experimental:
  • Add onModuleRunner hook to worker.init  -  by @​sheremet-va in #​9286 (e977f)
  • Option to disable the module runner  -  by @​sheremet-va and @​AriPerkkio in #​9210 (9be61)
  • Add importDurations: { limit, print } options  -  by @​hi-ogawa, Claude Opus 4.6 and @​sheremet-va in #​9401 (7e10f)
  • Add print and fail thresholds for importDurations  -  by @​hi-ogawa and Claude Opus 4.6 in #​9533 (3f7a5)
• fixtures:
  • Pass down file context to beforeAll/afterAll  -  by @​sheremet-va in #​9572 (c8339)
• reporters:
  • Add agent reporter to reduce ai agent token usage  -  by @​cpojer in #​9779 (3e9e0)
• runner:
  • Enhance retry options  -  by @​MazenSamehR, Matan Shavit, @​AriPerkkio and @​sheremet-va in #​9370 (9e4cf)
• ui:
  • Allow run individual test/suites  -  by @​userquin in #​9465 (73b10)
  • Add project filter/sort support  -  by @​userquin in #​8689 (0c7ea)
  • Add duration sorting to explorer  -  by @​julianhahn and @​cursoragent in #​9603 (209b1)
  • Implement filter for slow tests  -  by @​DerYeger and @​userquin in #​9705 (8880c)
• vitest:
  • Add run summary in GitHub Actions Reporter  -  by @​macarie and jhnance in #​9579 (96bfc)

   🐞 Bug Fixes

• Deprecate several vitest/* entry points  -  by @​sheremet-va in #​9347 (fd459)
• Use meta.url in createRequire  -  by @​sheremet-va in #​9441 (e3422)
• Preact browser mode init example of render function not async  -  by @​WuMingDao in #​9375 (2bea5)
• Deprecate unused types in matcher context  -  by @​sheremet-va in #​9449 (20f87)
• Handle external/noExternal during configEnvironment hook  -  by @​hi-ogawa and Claude Opus 4.6 in #​9508 (59ea2)
• Replace default ssr environment runner with Vitest server module runner  -  by @​hi-ogawa and Claude Opus 4.6 in #​9506 (cd5db)
• Propagate experimental CLI options to child projects  -  by @​hi-ogawa and Claude Opus 4.6 in #​9531 (b624f)
• Show a warning when browser.isolate is used  -  by @​sheremet-va in #​9410 (3d48e)
• Fix vi.mock({ spy: true }) node v8 coverage  -  by @​hi-ogawa, hi-ogawa and Claude Opus 4.6 in #​9541 (687b6)
• Don't show internal ssr handler in errors  -  by @​sheremet-va in #​9547 (76c43)
• Close vitest if it failed to start  -  by @​sheremet-va in #​9573 (728ba)
• Fix ssr environment runner in project  -  by @​hi-ogawa in #​9584 (09006)
• Trim trailing white spaces in code block  -  by @​hi-ogawa in #​9591 (f78be)
• Support inline snapshot inside test.for/each  -  by @​hi-ogawa in #​9590 (615fd)
• Apply source maps for external module stack trace  -  by @​hi-ogawa in #​9152 (79e20)
• Remove the .name from statically collected test  -  by @​sheremet-va in #​9596 (b66ff)
• Don't suppress warnings on pnp  -  by @​sheremet-va in #​9602 (89cbd)
• Support snapshot with expect.soft  -  by @​iumehara, @​hi-ogawa and Claude Opus 4.6 in #​9231 (3eb2c)
• Log seed when only sequence.shuffle.tests is enabled  -  by @​kaigritun, Kai Gritun and @​sheremet-va in #​9576 (8182b)
• Externalize expect/src/utils from vitest  -  by @​hi-ogawa in #​9616 (48739)
• Ignore test.override during static collection  -  by @​sheremet-va in #​9620 (09174)
• Increase stacktrace limit for --detect-async-leaks  -  by @​AriPerkkio in #​9638 (9fd4c)
• Hanging-reporter link in cli  -  by @​flx-sta in #​9649 (7c103)
• Fix teardown timeout of aroundEach/All when inner aroundEach/All throws  -  by @​hi-ogawa in #​9657 (4ec6c)
• Fix ui mode / html reporter and coverage integration  -  by @​hi-ogawa and Claude Opus 4.6 in #​9626 (86fad)
• Don't continue when aroundEach/All setup timed out  -  by @​hi-ogawa in #​9670 (bb013)
• Align VitestRunnerConfig optional fields with SerializedConfig  -  by @​hi-ogawa in #​9661 (79520)
• Handle Symbol values in format utility  -  by @​nami8824 in #​9658 (0583f)
• Deprecate toBe* spy assertions in favor of toHaveBeen* (and toThrowError)  -  by @​sheremet-va in #​9665 (4d390)
• Don't propagate nested aroundEach/All errors but aggregate them on runner  -  by @​hi-ogawa in #​9673 (b6365)
• Show a better error if there is a pending dynamic import  -  by @​sheremet-va in #​9676 (7ef5c)
• Preserve stack trace of resolves/rejects chained assertion error  -  by @​hi-ogawa in #​9679 (c6151)
• Handle module-sync condition in vmThreads/vmForks require  -  by @​lesleh in #​9650 and #​9651 (bb203)
• Hooks should respect maxConcurrency  -  by @​hi-ogawa in #​9653 (16d13)
• Recursively autospy module object  -  by @​hi-ogawa in #​9687 (695a8)
• Remove trailing spaces from diff error log  -  by @​hi-ogawa and @​sheremet-va in #​9680 (395d1)
• Respect project resolve.conditions for externals  -  by @​hi-ogawa in #​9717 (1d498)
• Use object for WeakMap instead of a symbol to support webcontainers  -  by @​sheremet-va in #​9731 (c5225)
• Fix re-mocking virtual module  -  by @​hi-ogawa in #​9748 (3cbbb)
• Cancelling should stop current test immediately  -  by @​AriPerkkio in #​9729 (0cb2f)
• Make mockObject change backwards compatible  -  by @​sheremet-va in #​9744 (84c69)
• Fix URL.name on jsdom  -  by @​hi-ogawa in #​9767 (031f3)
• Save and restore module graph in blob reporter  -  by @​hi-ogawa in #​9740 (84355)
• Don't silence reporter errors from test runtime events handler in normal run and --merge-reports  -  by @​hi-ogawa in #​9727 (4072d)
• Fix vi.importActual() for virtual modules  -  by @​hi-ogawa and Claude Opus 4.6 in #​9772 (1e89e)
• Throw FixtureAccessError if suite hook accesses undefined fixture  -  by @​sheremet-va in #​9786 (fc2ce)
• Allow hyphens in project config file name pattern  -  by @​Koutaro-Hanabusa and @​hi-ogawa in #​9760 (33e96)
• Manual and redirect mock shouldn't load or transform original module  -  by @​hi-ogawa and Claude Opus 4.6 in #​9774 (a8216)
• hideSkippedTests should not hide test.todo  -  by @​oilater in #​9562 and #​9781 (8181e)
• Allow catch/finally for async assertion  -  by @​hi-ogawa in #​9827 (031f0)
• Resolve fixture overrides from test's suite in beforeEach hooks  -  by @​hi-ogawa and Claude Opus 4.6 in #​9826 [(99e52)](https://redirect.github.com/vitest-dev/vitest/commit/

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