Vitest Release Notes

   🐞 Bug Fixes

• Isolate result.status between repeats runs  -  by @hi-ogawa, Hiroshi Ogawa and Codex (GPT-6) in https://github.com/vitest-dev/vitest/issues/11218 <samp>(5dbeb)</samp>
• Don't print an interceptor warning in browser mode  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/11377 <samp>(15cc0)</samp>
• Don't retry when test.fails expectedly failed  -  by @hi-ogawa, Hiroshi Ogawa and Codex (GPT-6) in https://github.com/vitest-dev/vitest/issues/11219 <samp>(b2458)</samp>
• Scope cache key generators to projects  -  by @ecoyoung in https://github.com/vitest-dev/vitest/issues/11281 and https://github.com/vitest-dev/vitest/issues/11301 <samp>(92ba7)</samp>
• browser:
  • Delay server listen until tests start running  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/11366 <samp>(7d8ed)</samp> …

   🐞 Bug Fixes

• Bind process in case global is overwritten  -  by @AriPerkkio in https://github.com/vitest-dev/vitest/issues/11343 <samp>(0b792)</samp>
• detect-async-leaks:
  • Ignore process.stdio handles  -  by @AriPerkkio in https://github.com/vitest-dev/vitest/issues/11333 <samp>(0fd6b)</samp>
• expect:
  • Fix toMatchObject with asymmetric matchers  -  by @ShreeBohara, Claude Opus 5, @hi-ogawa, Hiroshi Ogawa and Codex (GPT-5) in https://github.com/vitest-dev/vitest/issues/11100 <samp>(42523)</samp>
• jsdom:
  • Fix Request with Blob body on jsdom 28+  -  by @harshit-d3v in https://github.com/vitest-dev/vitest/issues/11295 <samp>(d1c3e)</samp>
• reporter:
  • agent to respect --silent  -  by @Raj4478 and @AriPerkkio in https://github.com/vitest-dev/vitest/issues/11271 <samp>(5b95e)</samp>
• reporters:
  • Handle concurrent createReport calls  -  by @7rulnik in https://github.com/vitest-dev/vitest/issues/11278 <samp>(e8e55)</samp> …

   🚀 Features

• ui:
  • Move trace attempts selector to viewer header  -  by @hi-ogawa, Hiroshi Ogawa and Codex in https://github.com/vitest-dev/vitest/issues/11189 <samp>(5dc4b)</samp>
  • Add focused trace view layout mode  -  by @hi-ogawa, Hiroshi Ogawa, OpenCode (gpt-5.6-sol) and Codex in https://github.com/vitest-dev/vitest/issues/11190 <samp>(376dc)</samp>

   🐞 Bug Fixes

• Exit 1 when vitest list fails collection  -  by @hamed-bavar in https://github.com/vitest-dev/vitest/issues/11145 and https://github.com/vitest-dev/vitest/issues/11146 <samp>(6108b)</samp>
• Keep parse error details in static collection  -  by @hamed-bavar in https://github.com/vitest-dev/vitest/issues/11150 and https://github.com/vitest-dev/vitest/issues/11151 <samp>(7c818)</samp>
• Avoid recursive prototype in automocking  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/11195 <samp>(99fc5)</samp> …

Vitest 5 is officially out! This release focuses on performance and brings a lot of new features while fixing long-standing bugs. See our blog post for the official announcement.

   🚨 Breaking Changes

• Replace loupe.inspect with pretty-format  -  by @hi-ogawa, Claude Opus 5 (1M context) and OpenAI Codex in https://github.com/vitest-dev/vitest/issues/9609 <samp>(3f802)</samp>
• Remove quotes from string values in test.for/each title $ variable (take 2)  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/10170 <samp>(04d37)</samp>
• Default attachmentsDir from .vitest-attachements/ to .vitest/attachments/  -  by @MdSadiqMd in https://github.com/vitest-dev/vitest/issues/10186 <samp>(1ba73)</samp>
• Remove sequential test/suite options in favor of concurrent  -  by @hi-ogawa and OpenAI Codex in https://github.com/vitest-dev/vitest/issues/10198 <samp>(9229f)</samp>
• Represent locator as an object instead of a string  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/10212 <samp>(80f07)</samp> …

   🚨 Breaking Changes

• Parse files statically in vitest list by default  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/11088 <samp>(51e94)</samp>

   🚀 Features

• Promote clearCache out of experimental  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/11086 <samp>(d4fe1)</samp>
• ui: Add link to open playwright trace  -  by @hi-ogawa, Hiroshi Ogawa and OpenCode (gpt-5.6-sol) in https://github.com/vitest-dev/vitest/issues/11059 <samp>(58f02)</samp>

   🐞 Bug Fixes

• Don't duplicte oxc.target if user provides a custom array  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/11095 <samp>(848d7)</samp>
• Propagate --maxWorkers to projects  -  by @Gaurav1112 in https://github.com/vitest-dev/vitest/issues/11102 <samp>(2122f)</samp>
• browser: Report the action error when a task times out  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/11101 <samp>(dc10f)</samp> …

   🚀 Features

• Promote parseSpecifications out of experimental  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/11087 <samp>(b628c)</samp>
• coverage:
  • Switch to @vitest/istanbuljs packages  -  by @AriPerkkio in https://github.com/vitest-dev/vitest/issues/11053 <samp>(5f6a5)</samp>
• ui:
  • Highlight editor source locations  -  by @sheremet-va, Hiroshi Ogawa and OpenCode in https://github.com/vitest-dev/vitest/issues/11004 <samp>(bce2d)</samp>
  • Navigate trace steps with keyboard and remove indirect editor focus  -  by @sheremet-va, Hiroshi Ogawa and OpenCode in https://github.com/vitest-dev/vitest/issues/11005 <samp>(6816f)</samp>
  • Persist trace view selection in URL  -  by @hi-ogawa, Hiroshi Ogawa and OpenCode in https://github.com/vitest-dev/vitest/issues/10981 <samp>(3069e)</samp>
  • Toggle trace target highlight  -  by @hi-ogawa, Hiroshi Ogawa and OpenCode in https://github.com/vitest-dev/vitest/issues/11049 <samp>(cd63e)</samp>

   🐞 Bug Fixes …

   🐞 Bug Fixes

• Revive global concurrency limit for test lifecycle [backport to v4]  -  by @sheremet-va and @hi-ogawa in https://github.com/vitest-dev/vitest/issues/10992 <samp>(5146d)</samp>
• browser:
  • Encode iframeId in tester iframe URL [backport to v4]  -  by @sheremet-va, Pduhard and Claude Opus 4.8 in https://github.com/vitest-dev/vitest/issues/10955 <samp>(10b2c)</samp>
  • Trigger playwright/chromium gc on lower disk availability [backport to v4]  -  by @hi-ogawa, Hiroshi Ogawa and OpenCode in https://github.com/vitest-dev/vitest/issues/10951 <samp>(9851d)</samp>
• mocker:
  • Restrict redirect mocks to the fs allowlist [backport to v4]  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/10974 <samp>(fe5a1)</samp>

    View changes on GitHub

   🚀 Features

• reporter: Add custom GitHub Actions summary title  -  by @heyJonBray and @macarie in https://github.com/vitest-dev/vitest/issues/10891 <samp>(4363c)</samp>

   🐞 Bug Fixes

• Revive global concurrency limit for test lifecycle  -  by @hi-ogawa, Hiroshi Ogawa, OpenCode (claude-opus-4-8) and @sheremet-va in https://github.com/vitest-dev/vitest/issues/10928 <samp>(cf917)</samp>
• Own the post-restart rerun, keep process.exit disabled in workers  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/10963 <samp>(5e69a)</samp>
• Preserve correct root during resolve config  -  by @AriPerkkio and @sheremet-va in https://github.com/vitest-dev/vitest/issues/10909 <samp>(210ba)</samp>
• browser:
  • Trigger playwright/chromium gc on lower disk availability  -  by @hi-ogawa, Hiroshi Ogawa and OpenCode (claude-opus-4-8) in https://github.com/vitest-dev/vitest/issues/10912 <samp>(032d3)</samp> …

   🚨 Breaking Changes

• Inline projects extend the root config by default  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/10750 <samp>(fec00)</samp>
• Enable mocking Temporal without fake timers  -  by @fabon-f, Hiroshi Ogawa and OpenCode in https://github.com/vitest-dev/vitest/issues/10757 <samp>(ac2d4)</samp>
• Support nested projects  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/10846 <samp>(ec367)</samp>
• Use > as separator in -t, calculate only once  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/10686 <samp>(a0b20)</samp>
• Fail the test when an asynchronous assertion is not awaited  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/10868 <samp>(86d4a)</samp>
• Share the Vite server between inline projects  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/10848 <samp>(d87c9)</samp> …

   🚨 Breaking Changes

• Separate config resolution from the server creation  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/10554 <samp>(1c0ec)</samp>

   🚀 Features

• Add toggable injectCjsGlobals option  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/10709 <samp>(82671)</samp>
• Promote fsModuleCache to a top-level option  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/10734 <samp>(78ed7)</samp>
• Support non-ascii characters in for/each title placeholders  -  by @k-yle in https://github.com/vitest-dev/vitest/issues/10773 <samp>(15e0a)</samp>
• benchmark: Add pluggable benchmark provider API  -  by @GuillaumeLagrange and @sheremet-va in https://github.com/vitest-dev/vitest/issues/10799 <samp>(86c70)</samp>

   🐞 Bug Fixes

• Disable server HMR before plugins read it in their config hook  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/10731 <samp>(e060b)</samp> …

   🚨 Breaking Changes

• Add screenshotDirectory config to browser.expect.toMatchScreenshot  -  by @macarie in https://github.com/vitest-dev/vitest/issues/10592 <samp>(a60de)</samp>
• Update @sinonjs/fake-timers and support mocking Temporal  -  by @hi-ogawa, Hiroshi Ogawa and OpenCode (claude-opus-4-8) in https://github.com/vitest-dev/vitest/issues/10654 <samp>(f8b15)</samp>
• Remove webdriverio package  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/10675 <samp>(5fed6)</samp>
• Clear mocks by default before each test  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/10613 <samp>(0f646)</samp>
• Don't emit localStorage warnings on Node 26, fail gracefully when worker fails to start  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/10293 <samp>(334ed)</samp>
• reporters: …

   🐞 Bug Fixes

• browser: Check fs access in builtin commands [backport to v4]  -  by @hi-ogawa, Hiroshi Ogawa and OpenCode (claude-opus-4-8) in https://github.com/vitest-dev/vitest/issues/10680 <samp>(5c18d)</samp>
• vm: Fix external module resolve error with deps optimizer query for encoded URI [backport to v4]  -  by @SveLil and @hi-ogawa in https://github.com/vitest-dev/vitest/issues/10661 <samp>(bae52)</samp>

    View changes on GitHub