GeezerVison

v5.1.0

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   🚀 Features

• Add --last-failed to run only failed tests  -  by @​sheremet-va in #​11558 (82f63)
• Support Temporal.Instant and Temporal.ZonedDateTime in vi.setSystemTime()  -  by @​Prajwal2246, Prajwal2246, Claude Opus 5.5 (1M context), @​hi-ogawa and Codex (GPT-6) in #​11321 (f150f)
• Introduce --since-last-run flag  -  by @​sheremet-va in #​11516 (08bd9)
• Expose per-retry/repeat attempt result  -  by @​hi-ogawa, Codex (GPT-6) and Claude Opus 5.5 (1M context) in #​11232 (21be4)
• Support fake timers for node:timers and node:timers/promise  -  by @​hi-ogawa, OpenCode and Codex (GPT-6) in #​10899 (fbe97)
• Allow coverage providers to store data in fs module cache  -  by @​AriPerkkio in #​11747 (54a2b)
• Interactively review failed snapshots  -  by @​macarie and @​hi-ogawa in #​11325 (54e5b)
• browser:
  • Mock modules through an import map  -  by @​sheremet-va in #​11534 (707f8)
  • Drop experimental label from trace view  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11518 (44c3c)
  • Introduce experimental pointer API  -  by @​macarie in #​10780 (5dc09)
  • Capture aria snapshot in trace view  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11492 (0cc39)
  • Show trace steps timeline on terminal on test failure  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11594 (973dc)
  • Add failure-only trace view mode  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11612 (d5d7d)
  • Enable failure-only trace view by default  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11766 (f37b6)
• coverage:
  • V8 to support ignoreNode option  -  by @​erickserra and @​AriPerkkio in #​11688 (e02db)
• experimental:
  • Add trace timeline for node  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11753 (4e985)
  • Add message option to vi.waitFor and vi.waitUntil  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11754 (fd145)

   🐞 Bug Fixes

• Rerun setup files after --changed filtering  -  by @​sheremet-va in #​11621 (3a39c)
• Return the mock to concurrent imports  -  by @​sheremet-va in #​11623 (1453b)
• Don't fail on console log pending at teardown  -  by @​sheremet-va in #​11619 (a60b8)
• Reference chai types in every d.ts chunk  -  by @​sheremet-va in #​11618 (fb150)
• Detect mock factory cycles that form later  -  by @​sheremet-va in #​11642 (e9554)
• Skip fs module cache for typed import.meta.glob  -  by @​sheremet-va in #​11666 (79501)
• Run tests that import a deleted file  -  by @​sheremet-va in #​11669 (80aa1)
• Keep syntax highlighting in code frames  -  by @​sheremet-va in #​11705 (d39f5)
• Respect CLI filters when prewarming browsers  -  by @​sheremet-va and Benjamin Tang in #​11706 (10947)
• Read cached source as utf-8  -  by @​juan-fernandez in #​11682 and #​11709 (867a5)
• Inherit watch from the root config in projects  -  by @​nstepien and Claude Opus 5.5 (1M context) in #​11724 (77c12)
• Prefix expect.poll message to all errors  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11756 (cab58)
• Support api.port 0  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11641 (3667c)
• Show attempts in test error logs of retried tests  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11696 (77a94)
• Preserve rootDir in project paths  -  by @​btea in #​11816 (bf96d)
• browser:
  • Change default port to 23315  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11640 (a2ec4)
  • Advance fake timers in actions and expect.element  -  by @​julienw, @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11242 (68190)
  • Drop trace view warning without html reporter  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11665 (e6407)
  • Detect shared chunks via the optimizer  -  by @​sheremet-va in #​11661 (e2e9c)
  • Clear screenshot stability timeout  -  by @​sheremet-va in #​11659 (fbe37)
  • Measure prepare duration with one clock  -  by @​sheremet-va in #​11667 (a3ed4)
  • Keep failure screenshot per attempt  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11694 (a5022)
  • Print trace timeline of each attempt  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11695 (27229)
  • Don't hang in page.viewport()  -  by @​sheremet-va in #​11738 (49ff4)
  • Skip trace entries after their attempt ended  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11771 (7a56f)
  • Focus the iframe before clicking in playwright  -  by @​sheremet-va in #​11798 (eb20a)
  • Fail the run when a tester cannot connect  -  by @​sheremet-va in #​11802 (605bf)
  • Treat edge as chromium in toHaveStyle  -  by @​aliamanatali in #​11813 (f4dd9)
• cache:
  • Handle concurrent cache clearing  -  by @​7rulnik in #​11697 (09076)
  • Key module cache on the deps optimizer  -  by @​MO2k4 and Martin Oehlert in #​11775 (52485)
  • Do not fail when the cache dir is unwritable  -  by @​ezefernandezyf in #​11781 (274ab)
• cli:
  • Use camelCase for sinceLastRun help  -  by @​fengmk2 in #​11707 (5c674)
• coverage:
  • V8 autoAttachSubprocess to use .tmp directory  -  by @​AriPerkkio in #​11632 (de5af)
  • V8 to ignore Vite's generated CJS namespace import helper  -  by @​AriPerkkio in #​11676 (5901f)
• deps:
  • Update all non-major dependencies  -  by @​sheremet-va in #​11637 (2b18e)
• expect:
  • Keep soft .resolves/.rejects error location  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11792 (42770)
• mocker:
  • Don't change the original prototype chain  -  by @​sheremet-va and Max Schwenk in #​11737 (cca42)
  • Use root mocks for linked packages  -  by @​sheremet-va in #​7708 and #​11739 (810ec)
• runner:
  • Don't drop throttled task updates  -  by @​sheremet-va in #​11795 (8e837)
• ui:
  • Escape search text in explorer highlight  -  by @​sheremet-va in #​11672 (3c6d6)
  • Fix html reporter crash when --bail cancels files  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11693 (36a5f)
  • Fix quirks mode in trace view replay  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11744 (b9b73)
  • Let coverage report follow UI color scheme  -  by @​AriPerkkio in #​11765 (59c2d)
  • Open trace view only for tests with a trace  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11770 (c022d)
• vm:
  • Strip hashbang before compiling CommonJS dependencies  -  by @​cwoebker in #​11731 (1a77c)
  • Keep node globals after teardown  -  by @​francesco-agnoletto in #​11380 and #​11681 (a57b4)
  • Reset fake timers after each test file  -  by @​francesco-agnoletto in #​11679 and #​11779 (78c46)
  • Keep assignable accessor globals writable in node environment  -  by @​MO2k4 and Martin Oehlert in #​11834 (a5ec3)

   🏎 Performance

• Reuse fsModuleCache in static collection  -  by @​sheremet-va in #​11622 (1766c)
• Cache setup/mock resolves in reused workers  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11760 (5de10)
• Don't refetch warm modules in reused runners  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11761 (4f135)
• browser:
  • Map only first frame for trace locations  -  by @​hi-ogawa and Claude Opus 5.5 (1M context) in #​11613 (a967d)
  • Disable WebSocketServer's allowSynchronousEvents  -  by @​nstepien in #​11794 (d4572)
• coverage:
  • Istanbul to use magic-string+rolldown for instrumentation  -  by @​AriPerkkio in #​11648 (2470b)
  • Istanbul to collect uncovered files in Promise.all  -  by @​AriPerkkio in #​11713 (f1092)
  • Istanbul to not store input source maps in coverage data  -  by @​AriPerkkio in #​11686 (2debb)
• expect:
  • Compare typed arrays in one loop  -  by @​sheremet-va in #​11658 (908eb)

    View changes on GitHub

v5.0.5

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   🐞 Bug Fixes

• Keep vite default fs.deny with api token file  -  by @​hi-ogawa, Hiroshi Ogawa and Claude Opus 5.5 in #​11578 (28dc1)
• Handle quoted file names in --changed  -  by @​sheremet-va in #​11583 (14921)
• Add data to the import.meta.hot stub  -  by @​sheremet-va in #​11590 (3a828)
• Set skip in skipIf, ignore undefined options  -  by @​sheremet-va in #​11591 (d523a)
• Skip builtin loading in async leak detector  -  by @​sheremet-va in #​11598 (fe86a)
• Keep the import frame in native loader errors  -  by @​sheremet-va in #​11599 (9697b)
• Run hook cleanups when a later hook fails  -  by @​sheremet-va in #​11605 (6c5a4)
• Release mocks of finished test files  -  by @​sheremet-va in #​11607 (e9c3d)
• Abort all running tests on cancel  -  by @​sheremet-va in #​11606 (6621a)
• browser:
  • Ignore synthetic pagehide events  -  by @​sheremet-va in #​11582 (ca081)
  • Run plugin buildStart on server creation  -  by @​sheremet-va in #​11593 (ea611)
  • Drop late connections of closed sessions  -  by @​sheremet-va in #​11600 (f161e)
  • Wait 30s for the browser to close  -  by @​sheremet-va in #​11601 (6498b)
  • Run global setup once with instances  -  by @​sheremet-va in #​11596 (8dd67)
• reporter:
  • End reason &#​39;failed&#​39; on worker crash  -  by @​AriPerkkio in #​11568 (6ae8e)

    View changes on GitHub

v5.0.4

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   🚀 Features

• experimental:
  • Tag cache directories with CACHEDIR.TAG  -  by @​lifeiscontent in #​11461 (a8ea3)
  • Support test.ui.theme option  -  by @​sheremet-va in #​11499 (1da66)
  • Highlight selector multiple matches in trace view  -  by @​hi-ogawa, Hiroshi Ogawa and Claude Opus 5.5 in #​11489 (5abba)
  • Print how many tests were affected and a total when running --changed  -  by @​sheremet-va in #​11424 (a2336)
  • Add an option to cache dependencies instead of statically parsing them  -  by @​sheremet-va in #​11515 (c0601)
  • Add fit and zoom controls to trace viewer  -  by @​hi-ogawa, Hiroshi Ogawa and Claude Opus 5.5 in #​11490 (f5dd9)

   🐞 Bug Fixes

• Fail the run on git and location filter errors  -  by @​sheremet-va in #​11430 (30d03)
• Enable fsModuleCache by default  -  by @​sheremet-va in #​11435 (ad208)
• Track project files and mocks with --changed  -  by @​sheremet-va in #​11432 (b0f2b)
• Refactor caching, fix : in project and change the shape of results cache  -  by @​sheremet-va in #​11453 (9673c)
• Keep full $ string values when taskTitleValueFormatTruncate is 0  -  by @​hi-ogawa, Hiroshi Ogawa and Claude Opus 5.5 in #​11485 (4f7e1)
• Resolve node builtins in client environments  -  by @​sheremet-va in #​11417 (56b31)
• Fix module graph builtin externals after #​11421  -  by @​hi-ogawa, Hiroshi Ogawa and Claude Opus 5.5 in #​11491 and #​11421 (008e1)
• Wrap module mocks during in-source testing  -  by @​sheremet-va in #​11505 (36d19)
• Handle line endings in snapshot  -  by @​sheremet-va in #​11522 (4c468)
• Respect root in projects  -  by @​sheremet-va in #​11521 (26642)
• Resolve mocks in directories with spaces  -  by @​sheremet-va in #​11539 (caaef)
• api:
  • Publish the api token atomically  -  by @​umairnawaz333 in #​11323 (6f990)
• browser:
  • Close the mock route interception race  -  by @​cplieger and @​sheremet-va in #​8339 and #​11083 (d6620)
  • Allow toHaveTextContent without arguments  -  by @​nomadical in #​11425 (8ebcf)
  • Apply API options without browser config  -  by @​sheremet-va in #​10852 (ad055)
  • Preserve undefined command arguments  -  by @​sheremet-va and @​AriPerkkio in #​11497 (1576d)
  • Wait for setup mocks before importing a test file  -  by @​kasperpeulen in #​11520 (b61d1)
  • Avoid extra scroll outside the iframe  -  by @​sheremet-va in #​11523 (662e8)
  • Run browser instances as workers  -  by @​sheremet-va in #​11525 (bf04b)
    • ⚠️ This can degrade performance if you have a custom maxWorkers setting. Previously, it was applied incorrectly and could lead to Vitest using too many resources. For example, a lower number would still open too many browsers. Fixing it means Vitest opens less instances by default now.
  • Open one cdp session per tester  -  by @​sheremet-va in #​11542 (69e63)
  • Clean up unmocked and pending mocks  -  by @​sheremet-va in #​11537 (5c955)
• coverage:
  • V8 browser memory leak between test files  -  by @​AriPerkkio in #​11466 (2297d)
  • allowExternal fails to include uncovered files  -  by @​AriPerkkio in #​11513 (4ef00)
  • Filenames containing brackets incorrectly showing as uncovered  -  by @​AriPerkkio in #​11531 (0fa80)
  • Istanbul coverage wrong when module transform warmups  -  by @​AriPerkkio in #​11529 (9f61d)
• deps:
  • Update all non-major dependencies  -  by @​sheremet-va in #​11167 (c74e0)
• expect:
  • Fix Map and Set deep equality in some assertions  -  by @​hi-ogawa, Hiroshi Ogawa and Claude Opus 5.5 in #​11402 (b4e79)
  • Check value in chai-style returned  -  by @​sheremet-va in #​11500 (1aca0)
• mocker:
  • Fix native loader mocking edge cases  -  by @​sheremet-va in #​11540 (cd423)
• pretty-format:
  • Support boxed symbols  -  by @​lehni in #​11445 and #​11446 (eba44)
• reporters:
  • Junit to strip ANSI sequences from all XML attributes  -  by @​meganemura and Claude Opus 5.5 in #​11407 (e1a73)
• runner:
  • Don't cache failed fixture setups  -  by @​hamed-bavar in #​11237 and #​11238 (4ee66)
• typecheck:
  • Use typescript pool in toTestSpecification  -  by @​sheremet-va in #​11451 (5f273)
• ui:
  • Remove duplicate browser-open call opening two tabs  -  by @​feastyr69 in #​11356 and #​11358 (d7e13)
  • Simplify explorer filtering + fix nested tests when search matches a suite  -  by @​hi-ogawa, Hiroshi Ogawa, Codex and Claude Opus 5.5 in #​11262 (a627b)
  • Store module graph once per environment  -  by @​hi-ogawa, Hiroshi Ogawa and Claude Opus 5.5 in #​11421 (af903)
  • Mount index.html handler on the ui base path  -  by @​hi-ogawa, Hiroshi Ogawa and Claude Opus 5.5 in #​11517 (1bc24)
  • Center split pane resize handle  -  by @​hi-ogawa, Hiroshi Ogawa and Claude Opus 5.5 in #​11506 (e658b)
• vm:
  • Bind this to module.exports  -  by @​sheremet-va in #​11504 (b618a)

   🏎 Performance

• Reuse fsModuleCache when filtering by source  -  by @​sheremet-va in #​11428 (7ebd9)
• spy: Reset only mocks that were called or reconfigured  -  by @​johan-gorter and Claude Opus 5.5 in #​11197 (28ef9)

    View changes on GitHub

v5.0.3

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   🐞 Bug Fixes

• Isolate result.status between repeats runs  -  by @​hi-ogawa, Hiroshi Ogawa and Codex (GPT-6) in #​11218 (5dbeb)
• Don't print an interceptor warning in browser mode  -  by @​sheremet-va in #​11377 (15cc0)
• Don't retry when test.fails expectedly failed  -  by @​hi-ogawa, Hiroshi Ogawa and Codex (GPT-6) in #​11219 (b2458)
• Scope cache key generators to projects  -  by @​ecoyoung in #​11281 and #​11301 (92ba7)
• browser:
  • Delay server listen until tests start running  -  by @​sheremet-va in #​11366 (7d8ed)
  • Check mock path boundaries  -  by @​saryn17, Ryosei Sato and @​sheremet-va in #​11361 and #​11362 (1c388)
  • Keep config of browser-consumed environments  -  by @​kasperpeulen and Claude in #​11378 (aafc0)
  • Ignore page crash while cancelling  -  by @​sheremet-va in #​11386 (7c367)
  • toMatchScreenshot uses wrong reference on retried tests  -  by @​macarie in #​11393 (c22ab)
• cache:
  • Revalidate imports of cached modules  -  by @​sheremet-va in #​11381 (38f98)
• deps:
  • Pin why-is-node-running to 3.2.1 to avoid users running into ERR_PNPM_TRUST_DOWNGRADE  -  by @​AriPerkkio in #​11403 (f6c9a)
• expect:
  • Pass current equality testers to expect.extend asymmetric matchers  -  by @​hi-ogawa, Hiroshi Ogawa and Claude in #​11401 (3e794)
• jsdom:
  • Support Blob on jsdom 30.1  -  by @​sheremet-va in #​11379 (6c49b)
• pool:
  • Preserve unique pool ids when groupOrder is set  -  by @​mtorp in #​11392 (50312)
• ui:
  • Split-pane handle overlapping iframe  -  by @​macarie in #​11221 (f91db)
• vitest:
  • Remove root temp dir on close  -  by @​abhinav-phi in #​11248 (7c711)
• vm:
  • Do not optimize deps from index.html  -  by @​ezefernandezyf, Hiroshi Ogawa and Codex (GPT-6) in #​11329 and #​11360 (caf28)
  • Don't reuse scripts across vite environments  -  by [@​MO2k4](https://re

[!IMPORTANT]
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