feat(experimental): support aria snapshot by hi-ogawa · Pull Request #9668 · vitest-dev/vitest

hi-ogawa · 2026-02-15T05:19:56Z

Description

Closes [Brower Mode] Support aria snapshot matcher #6933
Closes Expose updateSnapshot via SnapshotState #9481
Requires feat: add aria snapshot utilities ivya#8

Adds toMatchAriaSnapshot() and toMatchAriaInlineSnapshot() matchers for asserting DOM accessibility trees, inspired by Playwright's aria snapshot feature. Core logic of aria tree generation, parsing, matching are entirely implemented on ivya vitest-dev/ivya#8 as Aria related runtime utility lives there.

Under the hood, this PR also introduces domain snapshot API in Vitest core to allow extending comparison mechanism beyond exact string equality. The simple example is added as a test case and also documented to illustrate the idea. However, I'd treat this API being "experimental" since I haven't too deeply thought through the API shape beyond what I minimally needed for implementing aria snapshot.

API

// file
expect(document.querySelector('nav')).toMatchAriaSnapshot()

// inline
expect(document.body).toMatchAriaInlineSnapshot(`
  - paragraph: Original
  - button "1234": Pattern
`)

// with expect.element
await expect.element(page.getByRole('navigation')).toMatchAriaInlineSnapshot(`
  - button: Save
  - button: Cancel
`)

// with expect.poll (technically works but not documented specifically)
await expect.poll(() => document.body).toMatchAriaInlineSnapshot(`
  - heading "Dashboard" [level=1]
`)

Example

Given HTML like

<p>Original</p>
<button aria-label="1234">Pattern</button>
<p>Extra</p>

Initially generated snapshot looks like:

- paragraph: Original
- button "1234": Pattern
- paragraph: Extra

Snapshot can be manually edited to include regex pattern or remove some part and snapshot assertion continues to pass:

- paragraph: Original
- button /\d+/: Pattern

Now when actual HTML changes to:

<p>Changes</p>        👈 (before: "Original", after: "Changed")
<button aria-label="1234">Pattern</button>
<p>Extra</p>

Snapshot would now fail, but the error diff normalizes partially matching part:

- - paragraph: Original
+ - paragraph: Changed
  - button /\d+/: Pattern

When forcing the snapshot update via --update, newly generated snapshot would reflect the same error diff, which means manually edited part is preserved:

- paragraph: Changed
- button /\d+/: Pattern

TODO

test yaml parse error (the error from adapter.parseExpected)
always require stable snapshot
- more tests
- also document
document feat: support /children directive in aria tree template ivya#10
document feat: add minimal YAML parser for aria snapshot templates ivya#13
Create follow up issues

Questions

Should poll snapshot with --update wait for stable snapshot?
- ~~TODO: new heuristics and new option? employ similar strategy as toMatchScreenshot?~~
  Yes, it should. We can simplify pool more and wait until stable on "new" (initial snaphsot) and "all" (--update) cases
~~How to pull in yaml?~~ (fixed by feat: add minimal YAML parser for aria snapshot templates ivya#13)
- Aria snapshot requires yaml parser and it's now bundled through @vitest/browser/dist/expect-element.js. The package yaml is huge around 100kb. This caused expect-element.js to go from 23kb to 140kb. Should we try code split and lazily load on runtime?
- domain snapshot itself is synchronous. lazy load requires making toMatchAriaSnapshot specifically asynchronous, which is technically possible. Or we can make explicit opt-in/out flag to lazy load early during runtime.
- Or we (AI) can hand-roll simplified yaml parser (note that yaml serializer is already hand-rolled partly by playwright).
  feat: add minimal YAML parser for aria snapshot templates ivya#13

Follow-up considered

"strict matching" via /children property (port https://playwright.dev/docs/aria-snapshots#strict-matching)
- feat: support /children directive in aria tree template ivya#10
support "raw file" output like toMatchFileSnapshot
migrate internal to use snaphsot domain like mechanism and support poll
~~config to register snapshot domain similar to snapshotSerializers feat(experimental): support aria snapshot #9668 (comment)~~
- Custom domain snapshot assertion is only available through expect.extend.

TODO

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Tests

Run the tests with pnpm test:ci.

Documentation

If you introduce new functionality, document it. You can run documentation with pnpm run docs command.

Changesets

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* refactor: use custom matcher for domain snapshot * test: test toMatchKvSnapshot and toMatchKvInlineSnapshot * test: update exports * refactor: aria snapshot via expect.extend * chore: comment what to do * feat: support `expect.extend(..., { __vitest_poll_takeover__: true })` * test: update * refactor: remove unused * test: update exports * refactor: remove more * test: update * chore: remove types * docs: remove addSnapshotDomain * chore: clean snapshot matcher transition leftovers Co-authored-by: Codex <noreply@openai.com> * chore: unused * docs: update custom snapshot matcher guidance Co-authored-by: Codex <noreply@openai.com> * docs: re-order * docs: jsdoc * refactor: use __vitest_poll_takeover__ per matcher function * refactor: revert expect.extend options * chore: comment * chore: comment --------- Co-authored-by: Codex <noreply@openai.com>

hi-ogawa · 2026-04-07T01:09:56Z

@sheremet-va This is ready yet again.

sheremet-va

I don't think I've seen a multi-line ARIA snapshot - how are they supported?

Otherwise looks good 👍

sheremet-va · 2026-04-07T19:35:03Z

+
+- **Type:** `() => void`
+
+Captures the accessibility tree of a DOM element and compares it against a stored snapshot. Inspired by [Playwright's ARIA snapshots](https://playwright.dev/docs/aria-snapshots).


Inspired or based on?

I simplified the paragraph here and removed the mention.

sheremet-va · 2026-04-07T19:36:34Z

+On first run, Vitest generates a snapshot file entry:
+
+```yaml
+- form "Log In":


Does it create a separate file or does it have exports[] file? I thought it just follow regular snapshots, but this example makes me doubt it

Good catch. Updated with the explicit file with __snapshots__/basic.test.ts.snap.

sheremet-va · 2026-04-07T19:41:36Z

+      }
+    }
+
+    // TODO: should `all` mode ignore parse error?


Not certain. Silently hiding parse error isn't good either and users can fix or purge the broken snapshot manually and that decision affects how the snapshot get updated since aria snapshot adjusts based on the template side.

I'll leave this as is and see what will happen. I've updated the comment to mention the decision.

Co-authored-by: Codex <noreply@openai.com>

hi-ogawa · 2026-04-08T04:07:18Z

I don't think I've seen a multi-line ARIA snapshot - how are they supported?

Do you mean multiline text like paragraph? ARIA snapshot normalize white space and new lines, so the generated text is always a single line. For example,

<p>
....anything...
...<br />
...
</p>

should always end up

- paragraph: ...anything but normalized...

Co-authored-by: Codex <noreply@openai.com>

sheremet-va

LGTM, let's see how it goes

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Fix suite hook throwing errors for unused auto test-scoped fixture - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Sonnet 4.6** in [#10035](https://github.com/vitest-dev/vitest/issues/10035) [<samp>(39865)</samp>](https://github.com/vitest-dev/vitest/commit/398657e8d) - **expect**: - Remove `JestExtendError.context` from verbose error reporting - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9983](https://github.com/vitest-dev/vitest/issues/9983) [<samp>(66751)</samp>](https://github.com/vitest-dev/vitest/commit/66751c9e8) - Don't leak "runner" types - by [@sheremet-va](https://github.com/sheremet-va) in [#10004](https://github.com/vitest-dev/vitest/issues/10004) [<samp>(ec204)</samp>](https://github.com/vitest-dev/vitest/commit/ec2045543) - **snapshot**: - Fix flagging obsolete snapshots for snapshot properties mismatch - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Sonnet 4.6** in [#9986](https://github.com/vitest-dev/vitest/issues/9986) [<samp>(6b869)</samp>](https://github.com/vitest-dev/vitest/commit/6b869156b) - Export custom snapshot matcher helper from `vitest` - by [@hi-ogawa](https://github.com/hi-ogawa) and **Codex** in [#10042](https://github.com/vitest-dev/vitest/issues/10042) [<samp>(691d3)</samp>](https://github.com/vitest-dev/vitest/commit/691d341fd) - **ui**: - Don't leak vite types - by [@sheremet-va](https://github.com/sheremet-va) in [#10005](https://github.com/vitest-dev/vitest/issues/10005) [<samp>(fdff1)</samp>](https://github.com/vitest-dev/vitest/commit/fdff1bf9a) - **vm**: - Fix external module resolve error with deps optimizer query - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Sonnet 4.6** in [#10024](https://github.com/vitest-dev/vitest/issues/10024) [<samp>(9dbf4)</samp>](https://github.com/vitest-dev/vitest/commit/9dbf47786) ##### [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v4.1.2...v4.1.3) ##### [v4.1.2](https://github.com/vitest-dev/vitest/releases/tag/v4.1.2) This release bumps Vitest's `flatted` version and removes version pinning to resolve `flatted`'s CVE related issues ([#9975](https://github.com/vitest-dev/vitest/issues/9975)). ##### 🐞 Bug Fixes - Don't resolve `setupFiles` from parent directory - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9960](https://github.com/vitest-dev/vitest/issues/9960) [<samp>(7aa93)</samp>](https://github.com/vitest-dev/vitest/commit/7aa937776) - Ensure sequential mock/unmock resolution - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Opus 4.6** in [#9830](https://github.com/vitest-dev/vitest/issues/9830) [<samp>(7c065)</samp>](https://github.com/vitest-dev/vitest/commit/7c06598db) - **browser**: Take failure screenshot if `toMatchScreenshot` can't capture a stable screenshot - by [@macarie](https://github.com/macarie) in [#9847](https://github.com/vitest-dev/vitest/issues/9847) [<samp>(faace)</samp>](https://github.com/vitest-dev/vitest/commit/faace1fbe) - **coverage**: Correct `coverageConfigDefaults` values and types - by [@Arthie](https://github.com/Arthie) in [#9940](https://github.com/vitest-dev/vitest/issues/9940) [<samp>(b3c99)</samp>](https://github.com/vitest-dev/vitest/commit/b3c992cb2) - **pretty-format**: Fix output limit over counting - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9965](https://github.com/vitest-dev/vitest/issues/9965) [<samp>(d3b7a)</samp>](https://github.com/vitest-dev/vitest/commit/d3b7a40fa) - Disable colors if agent is detected - by [@sheremet-va](https://github.com/sheremet-va) and [@AriPerkkio](https://github.com/AriPerkkio) in [#9851](https://github.com/vitest-dev/vitest/issues/9851) [<samp>(6f97b)</samp>](https://github.com/vitest-dev/vitest/commit/6f97b55dd) ##### [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v4.1.1...v4.1.2) ##### [v4.1.1](https://github.com/vitest-dev/vitest/releases/tag/v4.1.1) ##### 🚀 Features - **experimental**: - Expose `matchesTags` to test if the current filter matches tags - by [@sheremet-va](https://github.com/sheremet-va) in [#9913](https://github.com/vitest-dev/vitest/issues/9913) [<samp>(eec53)</samp>](https://github.com/vitest-dev/vitest/commit/eec53d9f5) - Introduce `experimental.vcsProvider` - by [@sheremet-va](https://github.com/sheremet-va) in [#9928](https://github.com/vitest-dev/vitest/issues/9928) [<samp>(56115)</samp>](https://github.com/vitest-dev/vitest/commit/561150036) ##### 🐞 Bug Fixes - Mark `TestProject.testFilesList` internal properly - by [@sapphi-red](https://github.com/sapphi-red) in [#9867](https://github.com/vitest-dev/vitest/issues/9867) [<samp>(54f26)</samp>](https://github.com/vitest-dev/vitest/commit/54f2660f5) - Detect fixture that returns without calling `use` - by [@oilater](https://github.com/oilater) in [#9831](https://github.com/vitest-dev/vitest/issues/9831) and [#9861](https://github.com/vitest-dev/vitest/issues/9861) [<samp>(633ae)</samp>](https://github.com/vitest-dev/vitest/commit/633ae2303) - Drop vite 8.beta support - by [@AriPerkkio](https://github.com/AriPerkkio) in [#9862](https://github.com/vitest-dev/vitest/issues/9862) [<samp>(b78f5)</samp>](https://github.com/vitest-dev/vitest/commit/b78f5389d) - Type regression in vi.mocked() static class methods - by [@purepear](https://github.com/purepear) and [@hi-ogawa](https://github.com/hi-ogawa) in [#9857](https://github.com/vitest-dev/vitest/issues/9857) [<samp>(90926)</samp>](https://github.com/vitest-dev/vitest/commit/90926641b) - Properly re-evaluate actual modules of mocked external - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9898](https://github.com/vitest-dev/vitest/issues/9898) [<samp>(ae5ec)</samp>](https://github.com/vitest-dev/vitest/commit/ae5ec03ef) - Preserve coverage report when html reporter overlaps - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9889](https://github.com/vitest-dev/vitest/issues/9889) [<samp>(2d81a)</samp>](https://github.com/vitest-dev/vitest/commit/2d81ad897) - Provide `vi.advanceTimers` to the preview provider - by [@sheremet-va](https://github.com/sheremet-va) in [#9891](https://github.com/vitest-dev/vitest/issues/9891) [<samp>(1bc3e)</samp>](https://github.com/vitest-dev/vitest/commit/1bc3e63be) - Don't leak event listener in playwright provider - by [@sheremet-va](https://github.com/sheremet-va) in [#9910](https://github.com/vitest-dev/vitest/issues/9910) [<samp>(d9355)</samp>](https://github.com/vitest-dev/vitest/commit/d93550ff7) - Open browser in `--standalone` mode without running tests - by [@sheremet-va](https://github.com/sheremet-va) in [#9911](https://github.com/vitest-dev/vitest/issues/9911) [<samp>(e78ad)</samp>](https://github.com/vitest-dev/vitest/commit/e78adcf97) - Guard disposable and optional `body` - by [@sheremet-va](https://github.com/sheremet-va) in [#9912](https://github.com/vitest-dev/vitest/issues/9912) [<samp>(6fdb2)</samp>](https://github.com/vitest-dev/vitest/commit/6fdb2ba61) - Resolve `retry.condition` RegExp serialization issue - by [@nstepien](https://github.com/nstepien) and [@hi-ogawa](https://github.com/hi-ogawa) in [#9942](https://github.com/vitest-dev/vitest/issues/9942) [<samp>(7b605)</samp>](https://github.com/vitest-dev/vitest/commit/7b6054328) - **collect**: - Don't treat extra props on `test` return as tests - by [@sheremet-va](https://github.com/sheremet-va) in [#9871](https://github.com/vitest-dev/vitest/issues/9871) [<samp>(141e7)</samp>](https://github.com/vitest-dev/vitest/commit/141e72aa1) - **coverage**: - Simplify provider types - by [@AriPerkkio](https://github.com/AriPerkkio) in [#9931](https://github.com/vitest-dev/vitest/issues/9931) [<samp>(aaf9f)</samp>](https://github.com/vitest-dev/vitest/commit/aaf9f18ae) - Load built-in provider without module runner - by [@AriPerkkio](https://github.com/AriPerkkio) in [#9939](https://github.com/vitest-dev/vitest/issues/9939) [<samp>(bf892)</samp>](https://github.com/vitest-dev/vitest/commit/bf8920817) - **expect**: - Soft assertions continue after .resolves/.rejects promise errors - by [@mixelburg](https://github.com/mixelburg), **Maks Pikov**, **Claude Opus 4.6 (1M context)** and [@hi-ogawa](https://github.com/hi-ogawa) in [#9843](https://github.com/vitest-dev/vitest/issues/9843) [<samp>(6d74b)</samp>](https://github.com/vitest-dev/vitest/commit/6d74b4948) - Fix sinon-chai style API - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9943](https://github.com/vitest-dev/vitest/issues/9943) [<samp>(0f08d)</samp>](https://github.com/vitest-dev/vitest/commit/0f08dda2c) - **pretty-format**: - Limit output for large object - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Opus 4.6 (1M context)** in [#9949](https://github.com/vitest-dev/vitest/issues/9949) [<samp>(0d5f9)</samp>](https://github.com/vitest-dev/vitest/commit/0d5f9d6ef) ##### [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v4.1.0...v4.1.1) ##### [v4.1.0](https://github.com/vitest-dev/vitest/releases/tag/v4.1.0) 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](https://vitest.dev/blog/vitest-4-1). ##### 🚀 Features - Return a disposable from doMock() - by [@kirkwaiblinger](https://github.com/kirkwaiblinger) in [#9332](https://github.com/vitest-dev/vitest/issues/9332) [<samp>(e3e65)</samp>](https://github.com/vitest-dev/vitest/commit/e3e659a96) - Added chai style assertions - by [@ronnakamoto](https://github.com/ronnakamoto) and [@sheremet-va](https://github.com/sheremet-va) in [#8842](https://github.com/vitest-dev/vitest/issues/8842) [<samp>(841df)</samp>](https://github.com/vitest-dev/vitest/commit/841df9ac5) - Update to sinon/fake-timers v15 and add `setTickMode` to timer controls - by [@atscott](https://github.com/atscott) and [@sheremet-va](https://github.com/sheremet-va) in [#8726](https://github.com/vitest-dev/vitest/issues/8726) [<samp>(4b480)</samp>](https://github.com/vitest-dev/vitest/commit/4b480aaed) - Expose matcher types - by [@sheremet-va](https://github.com/sheremet-va) in [#9448](https://github.com/vitest-dev/vitest/issues/9448) [<samp>(3e4b9)</samp>](https://github.com/vitest-dev/vitest/commit/3e4b913b1) - Add `toTestSpecification` to reported tasks - by [@sheremet-va](https://github.com/sheremet-va) in [#9464](https://github.com/vitest-dev/vitest/issues/9464) [<samp>(1a470)</samp>](https://github.com/vitest-dev/vitest/commit/1a4705da9) - Show a warning if `vi.mock` or `vi.hoisted` are declared outside of top level of the module - by [@sheremet-va](https://github.com/sheremet-va) in [#9387](https://github.com/vitest-dev/vitest/issues/9387) [<samp>(5db54)</samp>](https://github.com/vitest-dev/vitest/commit/5db54a468) - Track and display expectedly failed tests (.fails) in UI and CLI - by [@Copilot](https://github.com/Copilot), **sheremet-va** and [@sheremet-va](https://github.com/sheremet-va) in [#9476](https://github.com/vitest-dev/vitest/issues/9476) [<samp>(77d75)</samp>](https://github.com/vitest-dev/vitest/commit/77d75fd34) - Support tags - by [@sheremet-va](https://github.com/sheremet-va) in [#9478](https://github.com/vitest-dev/vitest/issues/9478) [<samp>(de7c8)</samp>](https://github.com/vitest-dev/vitest/commit/de7c8a521) - Implement `aroundEach` and `aroundAll` hooks - by [@sheremet-va](https://github.com/sheremet-va) in [#9450](https://github.com/vitest-dev/vitest/issues/9450) [<samp>(2a8cb)</samp>](https://github.com/vitest-dev/vitest/commit/2a8cb9dc2) - Stabilize experimental features - by [@sheremet-va](https://github.com/sheremet-va) in [#9529](https://github.com/vitest-dev/vitest/issues/9529) [<samp>(b5fd2)</samp>](https://github.com/vitest-dev/vitest/commit/b5fd2a16a) - Accept `new` or `all` in `--update` flag - by [@sheremet-va](https://github.com/sheremet-va) in [#9543](https://github.com/vitest-dev/vitest/issues/9543) [<samp>(a5acf)</samp>](https://github.com/vitest-dev/vitest/commit/a5acf28a5) - Support `meta` in test options - by [@sheremet-va](https://github.com/sheremet-va) in [#9535](https://github.com/vitest-dev/vitest/issues/9535) [<samp>(7d622)</samp>](https://github.com/vitest-dev/vitest/commit/7d622e3d1) - Support type inference with a new `test.extend` syntax - by [@sheremet-va](https://github.com/sheremet-va) in [#9550](https://github.com/vitest-dev/vitest/issues/9550) [<samp>(e5385)</samp>](https://github.com/vitest-dev/vitest/commit/e53854fcc) - Support vite 8 beta, fix type issues in the config with different vite versions - by [@sheremet-va](https://github.com/sheremet-va) in [#9587](https://github.com/vitest-dev/vitest/issues/9587) [<samp>(99028)</samp>](https://github.com/vitest-dev/vitest/commit/990281dfd) - Add assertion helper to hide internal stack traces - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Opus 4.6** in [#9594](https://github.com/vitest-dev/vitest/issues/9594) [<samp>(eeb0a)</samp>](https://github.com/vitest-dev/vitest/commit/eeb0ae2f8) - Store failure screenshots using artifacts API - by [@macarie](https://github.com/macarie) in [#9588](https://github.com/vitest-dev/vitest/issues/9588) [<samp>(24603)</samp>](https://github.com/vitest-dev/vitest/commit/24603e3c4) - Allow `vitest list` to statically collect tests instead of running files to collect them - by [@sheremet-va](https://github.com/sheremet-va) in [#9630](https://github.com/vitest-dev/vitest/issues/9630) [<samp>(7a8e7)</samp>](https://github.com/vitest-dev/vitest/commit/7a8e7fc20) - Add `--detect-async-leaks` - by [@AriPerkkio](https://github.com/AriPerkkio) in [#9528](https://github.com/vitest-dev/vitest/issues/9528) [<samp>(c594d)</samp>](https://github.com/vitest-dev/vitest/commit/c594d4af3) - Implement `mockThrow` and `mockThrowOnce` - by [@thor-juhasz](https://github.com/thor-juhasz) and [@sheremet-va](https://github.com/sheremet-va) in [#9512](https://github.com/vitest-dev/vitest/issues/9512) [<samp>(61917)</samp>](https://github.com/vitest-dev/vitest/commit/619179fb7) - Support `update: "none"` and add docs about snapshots behavior on CI - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9700](https://github.com/vitest-dev/vitest/issues/9700) [<samp>(05f18)</samp>](https://github.com/vitest-dev/vitest/commit/05f1854e2) - Support playwright `launchOptions` with `connectOptions` - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9702](https://github.com/vitest-dev/vitest/issues/9702) [<samp>(f0ff1)</samp>](https://github.com/vitest-dev/vitest/commit/f0ff1b2a0) - Add `page/locator.mark` API to enhance playwright trace - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9652](https://github.com/vitest-dev/vitest/issues/9652) [<samp>(d0ee5)</samp>](https://github.com/vitest-dev/vitest/commit/d0ee546fe) - **api**: - Support tests starting or ending with `test` in `experimental_parseSpecification` - by [@jgillick](https://github.com/jgillick) and **Jeremy Gillick** in [#9235](https://github.com/vitest-dev/vitest/issues/9235) [<samp>(2f367)</samp>](https://github.com/vitest-dev/vitest/commit/2f367fad3) - Add filters to `createSpecification` - by [@sheremet-va](https://github.com/sheremet-va) in [#9336](https://github.com/vitest-dev/vitest/issues/9336) [<samp>(c8e6c)</samp>](https://github.com/vitest-dev/vitest/commit/c8e6c7fbf) - Expose `runTestFiles` as alternative to `runTestSpecifications` - by [@sheremet-va](https://github.com/sheremet-va) in [#9443](https://github.com/vitest-dev/vitest/issues/9443) [<samp>(43d76)</samp>](https://github.com/vitest-dev/vitest/commit/43d761821) - Add `allowWrite` and `allowExec` options to `api` - by [@sheremet-va](https://github.com/sheremet-va) in [#9350](https://github.com/vitest-dev/vitest/issues/9350) [<samp>(20e00)</samp>](https://github.com/vitest-dev/vitest/commit/20e00ef78) - Allow passing down test cases to `toTestSpecification` - by [@sheremet-va](https://github.com/sheremet-va) in [#9627](https://github.com/vitest-dev/vitest/issues/9627) [<samp>(6f17d)</samp>](https://github.com/vitest-dev/vitest/commit/6f17d5ddf) - **browser**: - Add `userEvent.wheel` API - by [@macarie](https://github.com/macarie) in [#9188](https://github.com/vitest-dev/vitest/issues/9188) [<samp>(66080)</samp>](https://github.com/vitest-dev/vitest/commit/660801979) - Add `filterNode` option to prettyDOM for filtering browser assertion error output - by [@Copilot](https://github.com/Copilot), **sheremet-va** and [@sheremet-va](https://github.com/sheremet-va) in [#9475](https://github.com/vitest-dev/vitest/issues/9475) [<samp>(d3220)</samp>](https://github.com/vitest-dev/vitest/commit/d3220fcd8) - Support playwright persistent context - by [@hi-ogawa](https://github.com/hi-ogawa), **Claude Opus 4.6** and [@sheremet-va](https://github.com/sheremet-va) in [#9229](https://github.com/vitest-dev/vitest/issues/9229) [<samp>(f865d)</samp>](https://github.com/vitest-dev/vitest/commit/f865d2ba4) - Added `detailsPanelPosition` option and button - by [@shairez](https://github.com/shairez) in [#9525](https://github.com/vitest-dev/vitest/issues/9525) [<samp>(c8a31)</samp>](https://github.com/vitest-dev/vitest/commit/c8a31147c) - Use BlazeDiff instead of pixelmatch - by [@macarie](https://github.com/macarie) in [#9514](https://github.com/vitest-dev/vitest/issues/9514) [<samp>(30936)</samp>](https://github.com/vitest-dev/vitest/commit/309362089) - Add `findElement` and enable strict mode in webdriverio and preview - by [@sheremet-va](https://github.com/sheremet-va) in [#9677](https://github.com/vitest-dev/vitest/issues/9677) [<samp>(c3f37)</samp>](https://github.com/vitest-dev/vitest/commit/c3f37721c) - **cli**: - Add [@bomb](https://github.com/bomb).sh/tab completions - by [@AmirSa12](https://github.com/AmirSa12) and [@sheremet-va](https://github.com/sheremet-va) in [#8639](https://github.com/vitest-dev/vitest/issues/8639) [<samp>(200f3)</samp>](https://github.com/vitest-dev/vitest/commit/200f31704) - **coverage**: - Support `ignore start/stop` ignore hints - by [@AriPerkkio](https://github.com/AriPerkkio) in [#9204](https://github.com/vitest-dev/vitest/issues/9204) [<samp>(e59c9)</samp>](https://github.com/vitest-dev/vitest/commit/e59c94ba6) - Add `coverage.changed` option to report only changed files - by [@kykim00](https://github.com/kykim00) and [@AriPerkkio](https://github.com/AriPerkkio) in [#9521](https://github.com/vitest-dev/vitest/issues/9521) [<samp>(1d939)</samp>](https://github.com/vitest-dev/vitest/commit/1d9392c67) - **experimental**: - Add `onModuleRunner` hook to `worker.init` - by [@sheremet-va](https://github.com/sheremet-va) in [#9286](https://github.com/vitest-dev/vitest/issues/9286) [<samp>(e977f)</samp>](https://github.com/vitest-dev/vitest/commit/e977f3deb) - Option to disable the module runner - by [@sheremet-va](https://github.com/sheremet-va) and [@AriPerkkio](https://github.com/AriPerkkio) in [#9210](https://github.com/vitest-dev/vitest/issues/9210) [<samp>(9be61)</samp>](https://github.com/vitest-dev/vitest/commit/9be6121ee) - Add `importDurations: { limit, print }` options - by [@hi-ogawa](https://github.com/hi-ogawa), **Claude Opus 4.6** and [@sheremet-va](https://github.com/sheremet-va) in [#9401](https://github.com/vitest-dev/vitest/issues/9401) [<samp>(7e10f)</samp>](https://github.com/vitest-dev/vitest/commit/7e10fb356) - Add print and fail thresholds for `importDurations` - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Opus 4.6** in [#9533](https://github.com/vitest-dev/vitest/issues/9533) [<samp>(3f7a5)</samp>](https://github.com/vitest-dev/vitest/commit/3f7a5f8f8) - **fixtures**: - Pass down file context to `beforeAll`/`afterAll` - by [@sheremet-va](https://github.com/sheremet-va) in [#9572](https://github.com/vitest-dev/vitest/issues/9572) [<samp>(c8339)</samp>](https://github.com/vitest-dev/vitest/commit/c83395f2c) - **reporters**: - Add `agent` reporter to reduce ai agent token usage - by [@cpojer](https://github.com/cpojer) in [#9779](https://github.com/vitest-dev/vitest/issues/9779) [<samp>(3e9e0)</samp>](https://github.com/vitest-dev/vitest/commit/3e9e096a2) - **runner**: - Enhance `retry` options - by [@MazenSamehR](https://github.com/MazenSamehR), **Matan Shavit**, [@AriPerkkio](https://github.com/AriPerkkio) and [@sheremet-va](https://github.com/sheremet-va) in [#9370](https://github.com/vitest-dev/vitest/issues/9370) [<samp>(9e4cf)</samp>](https://github.com/vitest-dev/vitest/commit/9e4cfd295) - **ui**: - Allow run individual test/suites - by [@userquin](https://github.com/userquin) in [#9465](https://github.com/vitest-dev/vitest/issues/9465) [<samp>(73b10)</samp>](https://github.com/vitest-dev/vitest/commit/73b10f1b9) - Add project filter/sort support - by [@userquin](https://github.com/userquin) in [#8689](https://github.com/vitest-dev/vitest/issues/8689) [<samp>(0c7ea)</samp>](https://github.com/vitest-dev/vitest/commit/0c7eaac16) - Add duration sorting to explorer - by [@julianhahn](https://github.com/julianhahn) and [@cursoragent](https://github.com/cursoragent) in [#9603](https://github.com/vitest-dev/vitest/issues/9603) [<samp>(209b1)</samp>](https://github.com/vitest-dev/vitest/commit/209b1b0e1) - Implement filter for slow tests - by [@DerYeger](https://github.com/DerYeger) and [@userquin](https://github.com/userquin) in [#9705](https://github.com/vitest-dev/vitest/issues/9705) [<samp>(8880c)</samp>](https://github.com/vitest-dev/vitest/commit/8880c907a) - **vitest**: - Add run summary in GitHub Actions Reporter - by [@macarie](https://github.com/macarie) and **jhnance** in [#9579](https://github.com/vitest-dev/vitest/issues/9579) [<samp>(96bfc)</samp>](https://github.com/vitest-dev/vitest/commit/96bfc8345) ##### 🐞 Bug Fixes - Deprecate several vitest/\* entry points - by [@sheremet-va](https://github.com/sheremet-va) in [#9347](https://github.com/vitest-dev/vitest/issues/9347) [<samp>(fd459)</samp>](https://github.com/vitest-dev/vitest/commit/fd45928be) - Use `meta.url` in `createRequire` - by [@sheremet-va](https://github.com/sheremet-va) in [#9441](https://github.com/vitest-dev/vitest/issues/9441) [<samp>(e3422)</samp>](https://github.com/vitest-dev/vitest/commit/e34225563) - Preact browser mode init example of render function not async - by [@WuMingDao](https://github.com/WuMingDao) in [#9375](https://github.com/vitest-dev/vitest/issues/9375) [<samp>(2bea5)</samp>](https://github.com/vitest-dev/vitest/commit/2bea549c7) - Deprecate unused types in matcher context - by [@sheremet-va](https://github.com/sheremet-va) in [#9449](https://github.com/vitest-dev/vitest/issues/9449) [<samp>(20f87)</samp>](https://github.com/vitest-dev/vitest/commit/20f8753a2) - Handle `external/noExternal` during `configEnvironment` hook - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Opus 4.6** in [#9508](https://github.com/vitest-dev/vitest/issues/9508) [<samp>(59ea2)</samp>](https://github.com/vitest-dev/vitest/commit/59ea27c1c) - Replace default ssr environment runner with Vitest server module runner - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Opus 4.6** in [#9506](https://github.com/vitest-dev/vitest/issues/9506) [<samp>(cd5db)</samp>](https://github.com/vitest-dev/vitest/commit/cd5db660c) - Propagate experimental CLI options to child projects - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Opus 4.6** in [#9531](https://github.com/vitest-dev/vitest/issues/9531) [<samp>(b624f)</samp>](https://github.com/vitest-dev/vitest/commit/b624fae53) - Show a warning when `browser.isolate` is used - by [@sheremet-va](https://github.com/sheremet-va) in [#9410](https://github.com/vitest-dev/vitest/issues/9410) [<samp>(3d48e)</samp>](https://github.com/vitest-dev/vitest/commit/3d48ebcb9) - Fix `vi.mock({ spy: true })` node v8 coverage - by [@hi-ogawa](https://github.com/hi-ogawa), **hi-ogawa** and **Claude Opus 4.6** in [#9541](https://github.com/vitest-dev/vitest/issues/9541) [<samp>(687b6)</samp>](https://github.com/vitest-dev/vitest/commit/687b633c1) - Don't show internal ssr handler in errors - by [@sheremet-va](https://github.com/sheremet-va) in [#9547](https://github.com/vitest-dev/vitest/issues/9547) [<samp>(76c43)</samp>](https://github.com/vitest-dev/vitest/commit/76c4397b5) - Close vitest if it failed to start - by [@sheremet-va](https://github.com/sheremet-va) in [#9573](https://github.com/vitest-dev/vitest/issues/9573) [<samp>(728ba)</samp>](https://github.com/vitest-dev/vitest/commit/728ba617f) - Fix ssr environment runner in project - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9584](https://github.com/vitest-dev/vitest/issues/9584) [<samp>(09006)</samp>](https://github.com/vitest-dev/vitest/commit/090064f97) - Trim trailing white spaces in code block - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9591](https://github.com/vitest-dev/vitest/issues/9591) [<samp>(f78be)</samp>](https://github.com/vitest-dev/vitest/commit/f78bea992) - Support inline snapshot inside test.for/each - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9590](https://github.com/vitest-dev/vitest/issues/9590) [<samp>(615fd)</samp>](https://github.com/vitest-dev/vitest/commit/615fd521e) - Apply source maps for external module stack trace - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9152](https://github.com/vitest-dev/vitest/issues/9152) [<samp>(79e20)</samp>](https://github.com/vitest-dev/vitest/commit/79e20d5a3) - Remove the `.name` from statically collected test - by [@sheremet-va](https://github.com/sheremet-va) in [#9596](https://github.com/vitest-dev/vitest/issues/9596) [<samp>(b66ff)</samp>](https://github.com/vitest-dev/vitest/commit/b66ff691a) - Don't suppress warnings on pnp - by [@sheremet-va](https://github.com/sheremet-va) in [#9602](https://github.com/vitest-dev/vitest/issues/9602) [<samp>(89cbd)</samp>](https://github.com/vitest-dev/vitest/commit/89cbdaea3) - Support snapshot with `expect.soft` - by [@iumehara](https://github.com/iumehara), [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Opus 4.6** in [#9231](https://github.com/vitest-dev/vitest/issues/9231) [<samp>(3eb2c)</samp>](https://github.com/vitest-dev/vitest/commit/3eb2cd541) - Log seed when only `sequence.shuffle.tests` is enabled - by [@kaigritun](https://github.com/kaigritun), **Kai Gritun** and [@sheremet-va](https://github.com/sheremet-va) in [#9576](https://github.com/vitest-dev/vitest/issues/9576) [<samp>(8182b)</samp>](https://github.com/vitest-dev/vitest/commit/8182b77ad) - Externalize `expect/src/utils` from `vitest` - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9616](https://github.com/vitest-dev/vitest/issues/9616) [<samp>(48739)</samp>](https://github.com/vitest-dev/vitest/commit/487398422) - Ignore test.override during static collection - by [@sheremet-va](https://github.com/sheremet-va) in [#9620](https://github.com/vitest-dev/vitest/issues/9620) [<samp>(09174)</samp>](https://github.com/vitest-dev/vitest/commit/0917470ce) - Increase stacktrace limit for `--detect-async-leaks` - by [@AriPerkkio](https://github.com/AriPerkkio) in [#9638](https://github.com/vitest-dev/vitest/issues/9638) [<samp>(9fd4c)</samp>](https://github.com/vitest-dev/vitest/commit/9fd4ce533) - Hanging-reporter link in cli - by [@flx-sta](https://github.com/flx-sta) in [#9649](https://github.com/vitest-dev/vitest/issues/9649) [<samp>(7c103)</samp>](https://github.com/vitest-dev/vitest/commit/7c103055c) - Fix teardown timeout of `aroundEach/All` when inner `aroundEach/All` throws - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9657](https://github.com/vitest-dev/vitest/issues/9657) [<samp>(4ec6c)</samp>](https://github.com/vitest-dev/vitest/commit/4ec6cb305) - Fix ui mode / html reporter and coverage integration - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Opus 4.6** in [#9626](https://github.com/vitest-dev/vitest/issues/9626) [<samp>(86fad)</samp>](https://github.com/vitest-dev/vitest/commit/86fad4b42) - Don't continue when `aroundEach/All` setup timed out - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9670](https://github.com/vitest-dev/vitest/issues/9670) [<samp>(bb013)</samp>](https://github.com/vitest-dev/vitest/commit/bb013d54b) - Align `VitestRunnerConfig` optional fields with `SerializedConfig` - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9661](https://github.com/vitest-dev/vitest/issues/9661) [<samp>(79520)</samp>](https://github.com/vitest-dev/vitest/commit/79520d82d) - Handle Symbol values in format utility - by [@nami8824](https://github.com/nami8824) in [#9658](https://github.com/vitest-dev/vitest/issues/9658) [<samp>(0583f)</samp>](https://github.com/vitest-dev/vitest/commit/0583f067e) - Deprecate `toBe*` spy assertions in favor of `toHaveBeen*` (and `toThrowError`) - by [@sheremet-va](https://github.com/sheremet-va) in [#9665](https://github.com/vitest-dev/vitest/issues/9665) [<samp>(4d390)</samp>](https://github.com/vitest-dev/vitest/commit/4d390dfe9) - Don't propagate nested `aroundEach/All` errors but aggregate them on runner - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9673](https://github.com/vitest-dev/vitest/issues/9673) [<samp>(b6365)</samp>](https://github.com/vitest-dev/vitest/commit/b63653f5a) - Show a better error if there is a pending dynamic import - by [@sheremet-va](https://github.com/sheremet-va) in [#9676](https://github.com/vitest-dev/vitest/issues/9676) [<samp>(7ef5c)</samp>](https://github.com/vitest-dev/vitest/commit/7ef5cf4b7) - Preserve stack trace of `resolves/rejects` chained assertion error - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9679](https://github.com/vitest-dev/vitest/issues/9679) [<samp>(c6151)</samp>](https://github.com/vitest-dev/vitest/commit/c61511d4a) - Handle module-sync condition in vmThreads/vmForks require - by [@lesleh](https://github.com/lesleh) in [#9650](https://github.com/vitest-dev/vitest/issues/9650) and [#9651](https://github.com/vitest-dev/vitest/issues/9651) [<samp>(bb203)</samp>](https://github.com/vitest-dev/vitest/commit/bb20389f4) - Hooks should respect `maxConcurrency` - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9653](https://github.com/vitest-dev/vitest/issues/9653) [<samp>(16d13)</samp>](https://github.com/vitest-dev/vitest/commit/16d13d981) - Recursively autospy module object - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9687](https://github.com/vitest-dev/vitest/issues/9687) [<samp>(695a8)</samp>](https://github.com/vitest-dev/vitest/commit/695a86b41) - Remove trailing spaces from diff error log - by [@hi-ogawa](https://github.com/hi-ogawa) and [@sheremet-va](https://github.com/sheremet-va) in [#9680](https://github.com/vitest-dev/vitest/issues/9680) [<samp>(395d1)</samp>](https://github.com/vitest-dev/vitest/commit/395d1a29e) - Respect project `resolve.conditions` for externals - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9717](https://github.com/vitest-dev/vitest/issues/9717) [<samp>(1d498)</samp>](https://github.com/vitest-dev/vitest/commit/1d4987498) - Use object for WeakMap instead of a symbol to support webcontainers - by [@sheremet-va](https://github.com/sheremet-va) in [#9731](https://github.com/vitest-dev/vitest/issues/9731) [<samp>(c5225)</samp>](https://github.com/vitest-dev/vitest/commit/c52259330) - Fix re-mocking virtual module - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9748](https://github.com/vitest-dev/vitest/issues/9748) [<samp>(3cbbb)</samp>](https://github.com/vitest-dev/vitest/commit/3cbbb17f1) - Cancelling should stop current test immediately - by [@AriPerkkio](https://github.com/AriPerkkio) in [#9729](https://github.com/vitest-dev/vitest/issues/9729) [<samp>(0cb2f)</samp>](https://github.com/vitest-dev/vitest/commit/0cb2f7239) - Make `mockObject` change backwards compatible - by [@sheremet-va](https://github.com/sheremet-va) in [#9744](https://github.com/vitest-dev/vitest/issues/9744) [<samp>(84c69)</samp>](https://github.com/vitest-dev/vitest/commit/84c69497f) - Fix `URL.name` on jsdom - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9767](https://github.com/vitest-dev/vitest/issues/9767) [<samp>(031f3)</samp>](https://github.com/vitest-dev/vitest/commit/031f3a374) - Save and restore module graph in blob reporter - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9740](https://github.com/vitest-dev/vitest/issues/9740) [<samp>(84355)</samp>](https://github.com/vitest-dev/vitest/commit/843554bf0) - Don't silence reporter errors from test runtime events handler in normal run and --merge-reports - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9727](https://github.com/vitest-dev/vitest/issues/9727) [<samp>(4072d)</samp>](https://github.com/vitest-dev/vitest/commit/4072d0132) - Fix `vi.importActual()` for virtual modules - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Opus 4.6** in [#9772](https://github.com/vitest-dev/vitest/issues/9772) [<samp>(1e89e)</samp>](https://github.com/vitest-dev/vitest/commit/1e89ec020) - Throw `FixtureAccessError` if suite hook accesses undefined fixture - by [@sheremet-va](https://github.com/sheremet-va) in [#9786](https://github.com/vitest-dev/vitest/issues/9786) [<samp>(fc2ce)</samp>](https://github.com/vitest-dev/vitest/commit/fc2cea2b7) - Allow hyphens in project config file name pattern - by [@Koutaro-Hanabusa](https://github.com/Koutaro-Hanabusa) and [@hi-ogawa](https://github.com/hi-ogawa) in [#9760](https://github.com/vitest-dev/vitest/issues/9760) [<samp>(33e96)</samp>](https://github.com/vitest-dev/vitest/commit/33e96311a) - Manual and redirect mock shouldn't `load` or `transform` original module - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Opus 4.6** in [#9774](https://github.com/vitest-dev/vitest/issues/9774) [<samp>(a8216)</samp>](https://github.com/vitest-dev/vitest/commit/a8216b001) - `hideSkippedTests` should not hide `test.todo` - by [@oilater](https://github.com/oilater) in [#9562](https://github.com/vitest-dev/vitest/issues/9562) and [#9781](https://github.com/vitest-dev/vitest/issues/9781) [<samp>(8181e)</samp>](https://github.com/vitest-dev/vitest/commit/8181e06e7) - Allow catch/finally for async assertion - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9827](https://github.com/vitest-dev/vitest/issues/9827) [<samp>(031f0)</samp>](https://github.com/vitest-dev/vitest/commit/031f02a89) - Resolve fixture overrides from test's suite in `beforeEach` hooks - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Opus 4.6** in [#9826](https://github.com/vitest-dev/vitest/issues/9826) [<samp>(99e52)</samp>](https://github.com/vitest-dev/vitest/commit/99e52fe58) - Use isAgent check, not just TTY, for watch mode - by [@sheremet-va](https://github.com/sheremet-va) in [#9841](https://github.com/vitest-dev/vitest/issues/9841) [<samp>(c3cac)</samp>](https://github.com/vitest-dev/vitest/commit/c3cac1c1b) - Use `performance.now` to measure test timeout duration - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Opus 4.6** in [#9795](https://github.com/vitest-dev/vitest/issues/9795) [<samp>(f48a6)</samp>](https://github.com/vitest-dev/vitest/commit/f48a60114) - Correctly identify concurrent test during static analysis - by [@sheremet-va](https://github.com/sheremet-va) in [#9846](https://github.com/vitest-dev/vitest/issues/9846) [<samp>(1de0a)</samp>](https://github.com/vitest-dev/vitest/commit/1de0aa22d) - **browser**: - Avoid updating screenshots when `toMatchScreenshot` passes - by [@macarie](https://github.com/macarie) in [#9289](https://github.com/vitest-dev/vitest/issues/9289) [<samp>(46aab)</samp>](https://github.com/vitest-dev/vitest/commit/46aabaa44) - Hide injected data-testid attributes - by [@sheremet-va](https://github.com/sheremet-va) in [#9503](https://github.com/vitest-dev/vitest/issues/9503) [<samp>(c8d2c)</samp>](https://github.com/vitest-dev/vitest/commit/c8d2c411c) - Throw an error if iframe was reloaded - by [@sheremet-va](https://github.com/sheremet-va) in [#9516](https://github.com/vitest-dev/vitest/issues/9516) [<samp>(73a81)</samp>](https://github.com/vitest-dev/vitest/commit/73a81f880) - Encode projectName in browser client URL - by [@dkkim0122](https://github.com/dkkim0122) in [#9523](https://github.com/vitest-dev/vitest/issues/9523) [<samp>(5b164)</samp>](https://github.com/vitest-dev/vitest/commit/5b16483c3) - Don't take failure screenshot if tests have artifacts created by `toMatchScreenshot` - by [@macarie](https://github.com/macarie) in [#9552](https://github.com/vitest-dev/vitest/issues/9552) [<samp>(83ca0)</samp>](https://github.com/vitest-dev/vitest/commit/83ca02547) - Remove `--remote-debugging-address` from chrome args - by [@hi-ogawa](https://github.com/hi-ogawa) and [@AriPerkkio](https://github.com/AriPerkkio) in [#9712](https://github.com/vitest-dev/vitest/issues/9712) [<samp>(f09bb)</samp>](https://github.com/vitest-dev/vitest/commit/f09bb5c32) - Make sure userEvent actions support `ensureAwaited` - by [@sheremet-va](https://github.com/sheremet-va) in [#9732](https://github.com/vitest-dev/vitest/issues/9732) [<samp>(97685)</samp>](https://github.com/vitest-dev/vitest/commit/9768517b8) - Types of `getCDPSession` and `cdp()` - by [@AriPerkkio](https://github.com/AriPerkkio) in [#9716](https://github.com/vitest-dev/vitest/issues/9716) [<samp>(689a2)</samp>](https://github.com/vitest-dev/vitest/commit/689a22a1b) - Skip esbuild.legalComments when using rolldown-vite - by [@Copilot](https://github.com/Copilot), **hi-ogawa** and [@hi-ogawa](https://github.com/hi-ogawa) in [#9803](https://github.com/vitest-dev/vitest/issues/9803) [<samp>(3505f)</samp>](https://github.com/vitest-dev/vitest/commit/3505fa5a3) - **chai**: - Don't allow `deepEqual` in the config because it's not serializable - by [@sheremet-va](https://github.com/sheremet-va) in [#9666](https://github.com/vitest-dev/vitest/issues/9666) [<samp>(9ee99)</samp>](https://github.com/vitest-dev/vitest/commit/9ee999d73) - **coverage**: - Infer transform mode for uncovered files - by [@AriPerkkio](https://github.com/AriPerkkio) in [#9435](https://github.com/vitest-dev/vitest/issues/9435) [<samp>(f3967)</samp>](https://github.com/vitest-dev/vitest/commit/f396792d6) - `thresholds.autoUpdate` to preserve ending whitespace - by [@AriPerkkio](https://github.com/AriPerkkio) in [#9436](https://github.com/vitest-dev/vitest/issues/9436) [<samp>(7e534)</samp>](https://github.com/vitest-dev/vitest/commit/7e534a0b6) - **deps**: - Update all non-major dependencies - by [@hi-ogawa](https://github.com/hi-ogawa) in [#9192](https://github.com/vitest-dev/vitest/issues/9192) [<samp>(90c30)</samp>](https://github.com/vitest-dev/vitest/commit/90c302f3b) - Update all non-major dependencies - in [#9485](https://github.com/vitest-dev/vitest/issues/9485) [<samp>(c0118)</samp>](https://github.com/vitest-dev/vitest/commit/c01186022) - Update all non-major dependencies - in [#9567](https://github.com/vitest-dev/vitest/issues/9567) [<samp>(13c9e)</samp>](https://github.com/vitest-dev/vitest/commit/13c9e022b) - **docs**: - Fix old `/config/#option` hash links causing hydration errors - by [@hi-ogawa](https://github.com/hi-ogawa), **Claude Opus 4.6** and [@sheremet-va](https://github.com/sheremet-va) in [#9610](https://github.com/vitest-dev/vitest/issues/9610) [<samp>(a603c)</samp>](https://github.com/vitest-dev/vitest/commit/a603c3a30) - **expect**: - `toMatchObject(Map/Set)` should expect `Map/Set` on left hand side - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Opus 4.6** in [#9532](https://github.com/vitest-dev/vitest/issues/9532) [<samp>(381da)</samp>](https://github.com/vitest-dev/vitest/commit/381da4a9d) - Fix objectContaining with proxy - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Opus 4.6** in [#9554](https://github.com/vitest-dev/vitest/issues/9554) [<samp>(7ce34)</samp>](https://github.com/vitest-dev/vitest/commit/7ce3417b1) - Support arbitrary value equality for `toThrow` and make Error detection robust - by [@hi-ogawa](https://github.com/hi-ogawa) and **Claude Opus 4.6** in [#9570](https://github.com/vitest-dev/vitest/issues/9570) [<samp>(de215)</samp>](https://github.com/vitest-dev/vitest/commit/de215c19c) - **mock**: - Inject helpers after hashbang if present - by [@sheremet-va](https://github.com/sheremet-va) in [#9545](https://github.com/vitest-dev/vitest/issues/9545) [<samp>(65432)</samp>](https://github.com/vitest-dev/vitest/commit/65432a74b) - **mocker**: - Update vite's peer dependency range - by [@sheremet-va](https://github.com/sheremet-va) in [#9808](https://github.com/vitest-dev/vitest/issues/9808) [<samp>(36f9a)</samp>](https://github.com/vitest-dev/vitest/commit/36f9a81a2) - **reporter**: - `dot` reporter leaves pending tests - by [@AriPerkkio](https://github.com/AriPerkkio) in [#9684](https://github.com/vitest-dev/vitest/issues/9684) [<samp>(4d793)</samp>](https://github.com/vitest-dev/vitest/commit/4d7938a56) - **runner**: - Mark repeated tests as finished on last run - by [@AriPerkkio](https://github.com/AriPerkkio) in [#9707](https://github.com/vitest-dev/vitest/issues/9707) [<samp>(cc735)</samp>](https://github.com/vitest-dev/vitest/commit/cc735970a) - **spy**: - Support deep partial in vi.mocked - by [@j2h30728](https://github.com/j2h30728) in [#8152](https://github.com/vitest-dev/vitest/issues/8152) and [#9493](https://github.com/vitest-dev/vitest/issues/9493) [<samp>(71cb5)</samp>](https://github.com/vitest-dev/vitest/commit/71cb51ffc) - Fallback to object accessor if descriptor's value is `undefined` - by [@sheremet-va](https://github.com/sheremet-va) in [#9511](https://github.com/vitest-dev/vitest/issues/9511) [<samp>(6f181)</samp>](https://github.com/vitest-dev/vitest/commit/6f18103fa) - Throw correct errors when shorthand methods are used on a class - by [@sheremet-va](https://github.com/sheremet-va) in [#9513](https://github.com/vitest-dev/vitest/issues/9513) [<samp>(5d0fd)</samp>](https://github.com/vitest-dev/vitest/commit/5d0fd3b62) - **types**: - `bench.reporters` no longer gives type errors when passing file name string paths - by [@Bertie690](https://github.com/Bertie690) in [#9695](https://github.com/vitest-dev/vitest/issues/9695) [<samp>(093c8)</samp>](https://github.com/vitest-dev/vitest/commit/093c8f6b5) - **ui**: - Process artifact attachments when generating HTML reporter - by [@macarie](https://github.com/macarie) in [#9472](https://github.com/vitest-dev/vitest/issues/9472) [<samp>(96eb9)</samp>](https://github.com/vitest-dev/vitest/commit/96eb92826) - Don't fail if --ui and --root are specified together - by [@sheremet-va](https://github.com/sheremet-va) in [#9536](https://github.com/vitest-dev/vitest/issues/9536) [<samp>(d9305)</samp>](https://github.com/vitest-dev/vitest/commit/d93055fc7) ##### 🏎 Performance - **pretty-format**: Combine DOMElement plugins - by [@sheremet-va](https://github.com/sheremet-va) in [#9581](https://github.com/vitest-dev/vitest/issues/9581) [<samp>(da85a)</samp>](https://github.com/vitest-dev/vitest/commit/da85a3267) ##### [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v4.0.17...v4.1.0) ##### [v4.0.18](https://github.com/vitest-dev/vitest/releases/tag/v4.0.18) ##### 🚀 Experimental Features - **experimental**: Add `onModuleRunner` hook to `worker.init` - by [@sheremet-va](https://github.com/sheremet-va) in [#9286](https://github.com/vitest-dev/vitest/issues/9286) [<samp>(ea837)</samp>](https://github.com/vitest-dev/vitest/commit/ea837de7d) ##### 🐞 Bug Fixes - Use `meta.url` in `createRequire` - by [@sheremet-va](https://github.com/sheremet-va) in [#9441](https://github.com/vitest-dev/vitest/issues/9441) [<samp>(e0572)</samp>](https://github.com/vitest-dev/vitest/commit/e057281ca) - **browser**: Hide injected data-testid attributes - by [@sheremet-va](https://github.com/sheremet-va) in [#9503](https://github.com/vitest-dev/vitest/issues/9503) [<samp>(f8989)</samp>](https://github.com/vitest-dev/vitest/commit/f89899cd8) - **ui**: Process artifact attachments when generating HTML reporter - by [@macarie](https://github.com/macarie) in [#9472](https://github.com/vitest-dev/vitest/issues/9472) [<samp>(22543)</samp>](https://github.com/vitest-dev/vitest/commit/225435647) ##### [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v4.0.17...v4.0.18)

hi-ogawa added 5 commits February 15, 2026 13:53

feat: aria snapshot

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feat: toMatchDomainInlineSnapshot

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feat: toMatchDomainSnapshot

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wip

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chore: design doc

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hi-ogawa added 24 commits March 11, 2026 10:41

Merge branch 'main' into feat-aria-snapshot

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wip: revert slop

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test: wip

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wip: comment out more slop

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wip: custom match

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wip: aria

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wip: aria prototype

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wip: aria domain

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wip: more aria

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docs: design

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wip: docs

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test/snapshots/README.md

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chore: cleanup

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test: split

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test: gitignore

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test: wip

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test: wip

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feat: partial update

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test: diff

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design docs

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refactor: remove slop DomainMatchResult.mismatches

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test: aria

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hi-ogawa and others added 9 commits April 7, 2026 08:50

Merge branch 'main' into feat-aria-snapshot

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wip: move to Snapshots.toMatchDomain(Inline)Snapshot

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docs: update to Snapshots namespace

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test: refactor utils

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test: update exports

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chore: revert unneeded

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test: cleanup comments

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test: update snapshot

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sheremet-va requested changes Apr 7, 2026

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hi-ogawa mentioned this pull request Apr 8, 2026

Revive browser mode test in packages/ui #10098

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hi-ogawa and others added 6 commits April 8, 2026 12:22

Merge branch 'main' into feat-aria-snapshot

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fix: this.__vitest_assertion__ -> this.assertion

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docs: tweak

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docs: fix experimental API release markers

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Co-authored-by: Codex <noreply@openai.com>

docs: not this slop

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docs: correct snapshot guide version markers

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Co-authored-by: Codex <noreply@openai.com>

hi-ogawa and others added 5 commits April 8, 2026 13:12

docs: clarify aria snapshot whitespace normalization

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Co-authored-by: Codex <noreply@openai.com>

test: test multiline paragraph

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chore: tweak comment

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refactor: nit

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chore: comment

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hi-ogawa requested a review from sheremet-va April 8, 2026 04:44

sheremet-va approved these changes Apr 9, 2026

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sheremet-va merged commit d4fbb5c into vitest-dev:main Apr 9, 2026
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hi-ogawa deleted the feat-aria-snapshot branch April 9, 2026 07:29

github-actions Bot locked and limited conversation to collaborators Aug 6, 2026


		- Type: `() => void`

		Captures the accessibility tree of a DOM element and compares it against a stored snapshot. Inspired by [Playwright's ARIA snapshots](https://playwright.dev/docs/aria-snapshots).

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