🐞 Bug Fixes

• Don't merge errors with different diffs for reporting  -  by @hi-ogawa in #8871 (3e19f)
• Do not throw when importing a type from an external package  -  by @sheremet-va in #8875 (7e6c3)
• Improve spying types  -  by @sheremet-va in #8878 (ca041)
• Reuse the same environment when isolate and fileParallelism are false  -  by @sheremet-va in #8889 (31706)
• browser:
  • Support module tracking  -  by @sheremet-va in #8877 (9e24a)
  • Ensure setup files are re-evaluated on each test run  -  by @yjaaidi in #8883 and #8884 (f50ea)
• coverage:
  • Prevent filtering out virtual files before remapping to sources  -  by @AriPerkkio in #8860 (e3b77)
• happy-dom:
  • Properly teardown additional keys  -  by @sheremet-va in #8888 (10a06)
• jsdom:
  • Pass down Node.js FormData to Request  -  by @sheremet-va in #8880 (197ca)

    View changes on GitHub

   🐞 Bug Fixes

• Respect ssr.noExternal when externalizing dependencies, fix Svelte and Astro  -  by @sheremet-va in #8862 (a4f86)
• Allow module in --config  -  by @sheremet-va in #8864 (b9521)
• browser: Allow Locator type in selectOptions element parameter  -  by @rzzf and @sheremet-va in #8848 (7ee28)
• module-runner: Don't return node builtins for getBuiltins unconditionally  -  by @sapphi-red in #8863 (0e858)
• pool: Rename groupId to groupOrder in error message  -  by @Yohannfra in #8856 (b9aab)

   🏎 Performance

• Pass testfiles at once when --no-isolate --maxWorkers=1  -  by @AriPerkkio in #8835 (584aa)
• expect: Optimize checking the input type  -  by @Connormiha in #8840 (06968)

    View changes on GitHub

   🐞 Bug Fixes

• browser:
  • Correct typo  -  by @benmccann in #8796 (ede1f)
  • Publish a missing context file for webdriverio  -  by @sheremet-va in #8824 (7c7b6)
• mocker:
  • Support mocking builtins without node: prefix  -  by @sheremet-va in #8829 (06208)
• pool:
  • Runner's error listener causing MaxListenersExceededWarning  -  by @AriPerkkio in #8820 (d1bff)
  • Capture workers stdio to logger  -  by @AriPerkkio in #8809 (fb95f)
• spy:
  • Allow classes in vi.mocked utility  -  by @sheremet-va in #8839 (f8756)
• worker:
  • Rpc listener leak when isolate: false  -  by @AriPerkkio in #8821 (573dc)

   🏎 Performance

• utils: Optimized reducer to avoid creating new objects  -  by @Connormiha in #8818 (d19ce)

    View changes on GitHub

   🐞 Bug Fixes

• Preserve reporter options from config when CLI reporters override them  -  by @Copilot and sheremet-va in #8794 (15552)
• browser: More stable in-source testing validation  -  by @sheremet-va in #8793 (62297)
• happy-dom: Support fetch globals  -  by @sheremet-va in #8791 (0fb74)
• init: Use correct jsx/tsx extension  -  by @sheremet-va in #8792 (abc04)

    View changes on GitHub

   🐞 Bug Fixes

• browser:
  • Don't print the deprecation notice in node_modules  -  by @sheremet-va in #8779 (588f7)
• pool:
  • Assign envs before running tests to keep in sync with process.env  -  by @sheremet-va in #8769 (26ce8)
• spy:
  • Properly inherit implementation's length  -  by @sheremet-va in #8778 (d4c2b)
  • Reset spies if both restoreMocks and mockReset are set in the config  -  by @sheremet-va in #8781 (2eedb)

    View changes on GitHub

   🐞 Bug Fixes

• Move the getBuiltins check  -  by @sheremet-va in #8765 (81000)
• pool: Don't teardown the communication channel too soon if something is running after the test  -  by @sheremet-va in #8767 (3fae7)

    View changes on GitHub

Vitest 4.0 is out!

To stay updated, read our blog post and check the migration guide.

   🚨 Breaking Changes

• Remove 'basic' reporter  -  by @AriPerkkio in #7884 (82fcf)
• Simplify default exclude pattern  -  by @sheremet-va in #6287 (14c50)
• Remove deprecated getSourceMap  -  by @sheremet-va in #8194 (ff934)
• Replace deprecated ErrorWithDiff with TestError  -  by @sheremet-va in #8195 (da59e)
• Remove UserConfig type in favor of ViteUserConfig  -  by @sheremet-va in #8196 (22f7f)
• Remove deprecated coverage options in favor of vitest/node exports  -  by @sheremet-va in #8197 (dc848)
• Remove deprecated internal helpers and environment exports  -  by @sheremet-va in #8198 (4703c)
• Remove deprecated typecheck and runner types  -  by @sheremet-va in #8199 (89a1c)
• Remove Node types from the main entry point, use vitest/node instead  -  by @sheremet-va in #8200 (1e60c)
• Remove support for Vite 5  -  by @sheremet-va in #8202 (cb8b0)
• Remove deprecated types  -  by @sheremet-va in #8203 (66bee)
• Remove deprecated environmentMatchGlobs and poolMatchGlobs  -  by @sheremet-va in #8205 (be11d)
• Remove deprecated workspace option in favor of projects  -  by @sheremet-va in #8218 (76fb7)
• Ignore --standalone when CLI filename filter is used  -  by @AriPerkkio in #8262 (013bf)
• Use module-runner instead of vite-node  -  by @sheremet-va and @AriPerkkio in #8208 (9be01)
• Rewrite spying implementation to make module mocking more intuitive  -  by @sheremet-va in #8363 (9e412)
• Remove deprecated APIs  -  by @sheremet-va in #8428 (a1cb9)
• Remove minWorkers and set it automatically to 0 in non watch mode  -  by @sheremet-va in #8454 (2c2d1)
• Verbose reporter prints tests in a list, introduce tree reporter  -  by @sheremet-va and @AriPerkkio in #8500 (25fd3)
• Include shadow root contents in pretty-format output  -  by @wkillerud in #8545 (9e722)
• Remove deprecated order from test() API  -  by @sheremet-va in #8594 (4d419)
• Rewrite pools without tinypool  -  by @AriPerkkio and @sheremet-va in #8705 (4822d)
• browser: Require a provider factory instead of a string  -  by @sheremet-va in #8445 (606cb)
• expect: Pass current equality testers to asymmetric matcher  -  by @hi-ogawa in #6825 (965ce)
• projects: Allow only files that have "vitest.config" or "vite.config" in the name  -  by @sheremet-va in #8542 (304bc)
• reporter: Remove deprecated APIs  -  by @AriPerkkio and @sheremet-va in #8223 (149f8)
• runner: Set mode to todo if no function is passed down to test or describe  -  by @sheremet-va in #8346 (1a81c)
• snapshot: Fail test with obsolete snapshot on CI  -  by @hi-ogawa in #7963 (4d84f)
• spy: Support spying on classes  -  by @sheremet-va in #6160 (abc0d)

   🚀 Features

• Provide entity to onConsoleLog  -  by @sheremet-va in #8159 (437d4)
• Add onUnhandledError callback  -  by @sheremet-va in #8162 (924cb)
• Add spy option to vi.mockObject  -  by @rChaoz in #8285 (81d76)
• Don't use vite-node in coverage packages  -  by @sheremet-va (ffdb4)
• Clickable dashboard numbers  -  by @shairez in #7406 (2344c)
• Display test "path" when filtering  -  by @userquin in #8547 (2e491)
• Introduce separate packages for browser mode providers  -  by @sheremet-va in #8629 (0dc93)
• Add hooks with type-safe extra context to TestAPI  -  by @ysfaran in #8623 (6b21c)
• Support expect.assert for type narrowing  -  by @sheremet-va in #8695 (fe589)
• Add displayAnnotations option to github-options  -  by @sheremet-va in #8706 (4a66d)
• Add schema validation matchers  -  by @zirkelc in #8527 (c0b25)
• Add a way to dump transformed content  -  by @sheremet-va in #8711 (931c0)
• api:
  • Expose experimental_parseSpecifications  -  by @sheremet-va in #8408 (fdeb2)
  • Expose Vitest watcher  -  by @sheremet-va in #8413 (aaa6e)
  • Add enableCoverage and disableCoverage methods  -  by @sheremet-va and @AriPerkkio in #8412 (61eb7)
  • Add getGlobalTestNamePattern method  -  by @sheremet-va in #8438 (bdb70)
  • Add relativeModuleId to TestModule  -  by @sheremet-va in #8505 (3be09)
  • Add getSeed method  -  by @sheremet-va in #85...

   🚨 Breaking Changes

• Rewrite pools without tinypool  -  by @AriPerkkio and @sheremet-va in #8705 (4822d)

   🐞 Bug Fixes

• Disable trackUnhandledErrors if inspector is enabled  -  by @sheremet-va in #8732 (acac7)
• browser:
  • Allow service workers to mock the network in chromium without breaking vi.mock  -  by @Georgegriff and @sheremet-va in #8668 (87108)
  • Support sync not.toBeInTheDocument()  -  by @sheremet-va in #8751 (f5d06)
• coverage:
  • V8 to ignore Vite's generated cjs import helpers  -  by @mrginglymus and @AriPerkkio in #8718 (35816)
  • Keep only strings in coverage.exclude  -  by @sheremet-va in #8731 (c9c30)
• module-runner:
  • Resolve resolvedSources correctly  -  by @sheremet-va in #8736 (8fc52)
  • Support getBuiltins  -  by @sheremet-va in #8746 (87bb8)

    View changes on GitHub

   🚀 Features

• Support expect.assert for type narrowing  -  by @sheremet-va in #8695 (fe589)
• Add displayAnnotations option to github-options  -  by @sheremet-va in #8706 (4a66d)
• Add schema validation matchers  -  by @zirkelc in #8527 (c0b25)
• Add a way to dump transformed content  -  by @sheremet-va in #8711 (931c0)
• browser: Support custom screenshot comparison algorithms  -  by @macarie in #8687 (e63b1)

   🐞 Bug Fixes

• Re-export CDP Session directly from playwright  -  by @mrginglymus in #8702 (9553a)
• browser: Define an export for browser/utils  -  by @sheremet-va in #8678 (529ab)
• jsdom: Support AbortSignal API  -  by @sheremet-va in #8704 (f6690)

    View changes on GitHub

   🐞 Bug Fixes

• browser: Allow importing BrowserCommand if no browser package is installed  -  by @sheremet-va in #8666 (95c36)

    View changes on GitHub