🚀 Features

• 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)
• browser:
  • 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 4.5 and @sheremet-va in #9229 (f865d)
• cli:
  • Add @bomb.sh/tab completions  -  by @AmirSa12 and @sheremet-va in #8639 (200f3)
• experimental:
  • Option to disable the module runner  -  by @sheremet-va and @AriPerkkio in #9210 (9be61)
• ui:
  • Allow run individual test/suites  -  by @userquin in #9465 (73b10)
  • Add project filter/sort support  -  by @userquin in #8689 (0c7ea)

   🐞 Bug Fixes

• Deprecate unused types in matcher context  -  by @sheremet-va in #9449 (20f87)
• coverage: thresholds.autoUpdate to preserve ending whitespace  -  by @AriPerkkio in #9436 (7e534)
• spy: Support deep partial in vi.mocked  -  by @j2h30728 in #8152 and #9493 (71cb5)
• ui: Process artifact attachments when generating HTML reporter  -  by @macarie in #9472 (96eb9)

    View changes on GitHub

   🚀 Experimental Features

• experimental: Add onModuleRunner hook to worker.init  -  by @sheremet-va in #9286 (ea837)

   🐞 Bug Fixes

• Use meta.url in createRequire  -  by @sheremet-va in #9441 (e0572)
• browser: Hide injected data-testid attributes  -  by @sheremet-va in #9503 (f8989)
• ui: Process artifact attachments when generating HTML reporter  -  by @macarie in #9472 (22543)

    View changes on GitHub

   🚀 Features

• Return a disposable from doMock()  -  by @kirkwaiblinger in #9332 (e3e65)
• Added chai style assertions for spying  -  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)
• 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)
• browser:
  • Add userEvent.wheel API  -  by @macarie in #9188 (66080)
• coverage:
  • Support ignore start/stop ignore hints  -  by @AriPerkkio in #9204 (e59c9)
• experimental:
  • Add onModuleRunner hook to worker.init  -  by @sheremet-va in #9286 (e977f)
• runner:
  • Enhance retry options  -  by @MazenSamehR, Matan Shavit, @AriPerkkio and @sheremet-va in #9370 (9e4cf)

   🐞 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)
• browser: Avoid updating screenshots when toMatchScreenshot passes  -  by @macarie in #9289 (46aab)
• coverage: Infer transform mode for uncovered files  -  by @AriPerkkio in #9435 (f3967)
• deps: Update all non-major dependencies  -  by @hi-ogawa in #9192 (90c30)

    View changes on GitHub

   🚀 Experimental Features

• Support openTelemetry for browser mode  -  by @hi-ogawa in #9180 (1ec3a)
• Support TRACEPARENT and TRACESTATE environment variables for OpenTelemetry context propagation  -  by @Copilot, hi-ogawa and @hi-ogawa in #9295 (876cb)

   🐞 Bug Fixes

• Improve asymmetric matcher diff readability by unwrapping container matchers  -  by @Copilot, sheremet-va, hi-ogawa and @hi-ogawa in #9330 (b2ec7)
• Improve runner error when importing outside of test context  -  by @sheremet-va in #9335 (2dd3d)
• Replace crypto.randomUUID to allow insecure environments (fix #9…  -  by @plusgut in #9339 and #9 (e6a3f)
• Handle null options in addEventHandler #9371  -  by @ThibautMarechal in #9372 and #9371 (40841)
• Typo in browser.provider error  -  by @deammer in #9394 (4b67f)
• browser:
  • Fix process.env and import.meta.env defines in inline project  -  by @hi-ogawa in #9239 (b70c9)
  • Fix upload File instance  -  by @hi-ogawa in #9294 (b6778)
  • Fix invalid project token for artifacts assets  -  by @hi-ogawa in #9321 (caa7d)
  • Log ErrorEvent.message when unhandled ErrorEvent.error is null  -  by @hi-ogawa in #9322 (5d84e)
  • Support fileParallelism on an instance  -  by @sheremet-va in #9328 (15006)
• coverage:
  • Remove unnecessary istanbul-lib-source-maps usage  -  by @AriPerkkio in #9344 (b0940)
  • Apply patch from istanbuljs/istanbuljs#837  -  by @AriPerkkio and sapphi-red in #9413 and #837 (e05ce)
• fsModuleCache:
  • Don't store importers in cache  -  by @sheremet-va in #9422 (75136)
  • Add importers alongside importedModules  -  by @sheremet-va in #9423 (59f92)
• mocker:
  • Fix mock transform with class  -  by @hi-ogawa in #9421 (d390e)
• pool:
  • Validate environment options when reusing the worker  -  by @sheremet-va in #9349 (a8a88)
  • Handle worker start failures gracefully  -  by @AriPerkkio in #9337 (200da)
• reporter:
  • Report test module if it failed to run  -  by @sheremet-va in #9272 (c7888)
• runner:
  • Respect nested test.only within describe.only  -  by @Ujjwaljain16 in #9021 and #9213 (55d5d)
• typecheck:
  • Improve error message when tsc outputs help text  -  by @Ujjwaljain16 in #9214 (7b10a)
• ui:
  • Detect gzip by magic numbers instead of Content-Type header in html reporter  -  by @Copilot, hi-ogawa and @hi-ogawa in #9278 (dd033)
• webdriverio:
  • Fall back to WebDriver Classic #9244  -  by @JustasMonkev in #9373 and #9244 (c23dd)

    View changes on GitHub

   🐞 Bug Fixes

• Fix browser mode default testTimeout back to 15 seconds  -  by @hi-ogawa in #9167 (da0ad)
• Avoid crashing on process.versions stub  -  by @AriPerkkio in #9174 (78cfb)
• Reject calling suite function inside test  -  by @hi-ogawa in #9198 (1a259)
• Allow inlining fully dynamic import  -  by @hi-ogawa in #9137 (56851)
• Fix module graph UI on html reporter with headless browser mode  -  by @hi-ogawa in #9219 (60642)
• Log deprecated test.poolOptions if it's set  -  by @sheremet-va in #9226 (f7f6a)
• browser:
  • Import recordArtifact from the vitest package  -  by @macarie in #9186 (01c56)
  • Fix import.meta.env define  -  by @hi-ogawa in #9205 (01a9a)
  • String formatting bug when including placeholders in console.log  -  by @michael-debs and @hi-ogawa in #9030 and #9131 (84a30)
• coverage:
  • Istanbul untested files source maps are off  -  by @AriPerkkio in #9208 (372e8)
• experimental:
  • Export setupEnvironment for custom pools  -  by @AriPerkkio in #9187 (5d26b)

    View changes on GitHub

   🚀 Experimental Features

• cache: Add opt-out on a plugin level, fix internal root cache  -  by @sheremet-va in #9154 (a68f7)
• reporters: Print import duration breakdown  -  by @sheremet-va in #9105 (122ff)

   🐞 Bug Fixes

• Keep built-in id as is in bun and deno  -  by @sheremet-va in #9117 (075ab)
• Use optimizeDeps.rolldownOptions to fix depreated warning + fix ssr.external: true  -  by @hi-ogawa in #9121 (fd8bd)
• Fix external behavior with deps.optimizer  -  by @hi-ogawa in #9125 (4c754)
• Very minor typo in "Chrome DevTools Protocol"  -  by @HowToTestFrontend in #9146 (20997)
• browser: Run toMatchScreenshot only once when used with expect.element  -  by @macarie in #9132 (0d2e7)
• coverage: Istanbul provider to not break source maps  -  by @AriPerkkio in #9040 (e4ca9)
• deps: Update dependency tinyexec to v1  -  in #9122 (fd786)
• docs: Remove --browser.provider from docs  -  by @sheremet-va in #9115 (120b3)
• expect: Preserve currentTestName in extended matchers  -  by @macarie in #9106 (e4345)
• pool: Terminate workers on CTRL+c forceful exits  -  by @AriPerkkio in #9140 (d57d8)
• reporters: Show project in github reporter  -  by @sheremet-va in #9138 (bb65e)
• spy: Do not mock overriden method, if parent was automocked  -  by @sheremet-va in #9116 (1a246)
• web-worker: MessagePort objects passed to Worker.postMessage work when clone === "native"  -  by @whitphx in #9118 (deee8)

    View changes on GitHub

   🚀 Experimental Features

• browser: Expose utils.configurePrettyDOM  -  by @sheremet-va in #9103 (2cc34)
• runner: Add full names to tasks  -  by @macarie in #9087 (821aa)
• ui: Add tabbed failure view for toMatchScreenshot with comparison slider  -  by @macarie in #8813 (c37c2)

   🐞 Bug Fixes

• Externalize before caching  -  by @sheremet-va in #9077 (e1b2e)
• Collect the duration of external imports  -  by @sheremet-va in #9097 (3326c)
• Rename collect to import, remove prepare  -  by @sheremet-va in #9091 (1256b)
• browser:
  • Unsubscribe onCancel on rpc destroy  -  by @AriPerkkio in #9088 (f5b72)
  • Revert the viewport scaling in non-ui mode #9018  -  by @sheremet-va in #9072 and #9018 (64502)
• coverage:
  • Invalidate circular modules correctly on rerun with coverage  -  by @aicest in #9096 (6f22c)
• expect:
  • Allow function as standard schema  -  by @hi-ogawa in #9099 (ed8a2)
• jsdom:
  • Reuse abort signals if possible  -  by @sheremet-va in #9090 (2c468)
• pool:
  • Init VITEST_POOL_ID + VITEST_WORKER_ID before environment setup  -  by @AriPerkkio in #9085 (37918)
• web-worker:
  • postMessage to send ports to workers  -  by @whitphx and @AriPerkkio in #9078 (9d176)

   🏎 Performance

• Replace debug with obug  -  by @sxzz and @AriPerkkio in #9057 (acc51)

    View changes on GitHub

   🐞 Bug Fixes

• types:
  • Don't use type from Vite 7.1  -  by @sheremet-va in #9071 (6356b)
  • Don't import node.js dependent types in vitest/browser  -  by @sheremet-va in #9068 (332af)

   🏎 Performance

• Avoid fetchModule roundtrip if the module is cached  -  by @sheremet-va in #9075 (b27e0)
• experimental: If fsCacheModule is enabled, read from the memory when possible  -  by @sheremet-va in #9076 (6b9a1)

    View changes on GitHub

   🐞 Bug Fixes

• Inherit fsModuleCachePath by default  -  by @sheremet-va in #9063 (9a8bc)
• Don't import from @opentelemetry/api in public types  -  by @sheremet-va in #9066 (e944a)

    View changes on GitHub

   🚀 Experimental Features

• api: Add extensible test artifact API  -  by @macarie in #8987 (77292)
  • See more at https://vitest.dev/api/advanced/artifacts
• expect: Provide task in MatchState  -  by @macarie in #9022 (afd1f)
• experimental: Support OpenTelemetry traces  -  by @sheremet-va in #8994 (d6d33)
  • See more at https://vitest.dev/guide/open-telemetry

   🏎 Performance

• experimental: Add file system cache  -  by @sheremet-va in #9026 (1b147)
  • See more at https://vitest.dev/config/experimental#experimental-fsmodulecache

    View changes on GitHub