Vitest v2.1.4 — Release Notes & Engineering Impact

Source available — automated, not human-reviewed

Component: vitest · Channel: stable. Automated analysis, not a compatibility certification. How this works.

Analysis updated: 2026-11-01.

Compatibility not verified — check source notes

📄 .MD

✨ Features 1 ⚡ Improvements 1 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Vitest v2.1.4. Source highlight:    🚀 Features

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Who Does This Impact? (Role-Based Analysis)

💻 Software Engineers & Devs

Check the source notes against the package and APIs you use before upgrading.

📊 Product & Engineering Leads

Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.

⚙️ DevOps & Security

Verify the target version, runtime requirements and rollback procedure in the official documentation.

✨ New Features & Capabilities (1)

**browser**: Allow custom HTML path, respect plugins `transformIndexHtml`  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6725 <samp>(16902)</samp>

⚡ Performance & Enhancements (1)

Use `hash` to replace `createHash`  -  by @btea in https://github.com/vitest-dev/vitest/issues/6703 <samp>(5d07b)</samp>

🔧 Bug Fixes & Patches (6)

Don't normalize drive case letter in root  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6792 <samp>(b28cd)</samp>
Fix default browser port  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/6700 <samp>(9c518)</samp>
Optimize expect-type  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6713 <samp>(07918)</samp>
Don't polyfill process.env  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6718 <samp>(da6d2)</samp>
Increment browser port automatically if there are several projects with browser.enabled  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6717 <samp>(a9397)</samp>
Cleanup keyboard state  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/6731 <samp>(19278)</samp>

📄 View Raw Release Notes (Original Developer Log)

###    🚀 Features _This patch release includes a non-breaking feature for the experimental Browser Mode that doesn't follow SemVer. If you want to avoid picking up releases like this, make sure to pin the Vitest version in your `package.json`. See npm's documentation about [semver](https://docs.npmjs.com/cli/v6/using-npm/semver/) for more information._ - **browser**: Allow custom HTML path, respect plugins `transformIndexHtml`  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6725 [<samp>(16902)</samp>](https://github.com/vitest-dev/vitest/commit/169028f0) ###    🐞 Bug Fixes - **windows**: - Don't normalize drive case letter in root  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6792 [<samp>(b28cd)</samp>](https://github.com/vitest-dev/vitest/commit/b28cd2e3) - **browser**: - Fix default browser port  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/6700 [<samp>(9c518)</samp>](https://github.com/vitest-dev/vitest/commit/9c518c14) - Optimize expect-type  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6713 [<samp>(07918)</samp>](https://github.com/vitest-dev/vitest/commit/07918538) - Don't polyfill process.env  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6718 [<samp>(da6d2)</samp>](https://github.com/vitest-dev/vitest/commit/da6d2ea7) - Increment browser port automatically if there are several projects with browser.enabled  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6717 [<samp>(a9397)</samp>](https://github.com/vitest-dev/vitest/commit/a939779f) - Cleanup keyboard state  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/6731 [<samp>(19278)</samp>](https://github.com/vitest-dev/vitest/commit/19278f4c) - Don't add `v=` queries to setup files imports  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6759 [<samp>(b8258)</samp>](https://github.com/vitest-dev/vitest/commit/b82584c9) - User event cleanup on retry  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/6764 [<samp>(bdd15)</samp>](https://github.com/vitest-dev/vitest/commit/bdd15dd1) - Ignore non mocked msw requests  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6770 [<samp>(9d9ba)</samp>](https://github.com/vitest-dev/vitest/commit/9d9bad5b) - Initiate MSW in the same frame as tests  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6772 [<samp>(2444f)</samp>](https://github.com/vitest-dev/vitest/commit/2444ff22) - **deps**: - Update dependency sirv to v3  -  in https://github.com/vitest-dev/vitest/issues/6701 [<samp>(fde5d)</samp>](https://github.com/vitest-dev/vitest/commit/fde5d509) - **expect**: - Correct behavior of `toThrowError` with empty string parameter  -  by @shulaoda in https://github.com/vitest-dev/vitest/issues/6710 [<samp>(a6129)</samp>](https://github.com/vitest-dev/vitest/commit/a61293e9) - **mocker**: - Remove spy from peer dependencies  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6777 [<samp>(3a8b5)</samp>](https://github.com/vitest-dev/vitest/commit/3a8b56bf) - **vitest**: - Clarify slowTestThreshold, print slow tests in non-TTY mode  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6715 [<samp>(2e6aa)</samp>](https://github.com/vitest-dev/vitest/commit/2e6aa647) - Print warnings form Vite plugins  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6724 [<samp>(121b1)</samp>](https://github.com/vitest-dev/vitest/commit/121b161f) - Don't fail if the working directory starts with a lowercase drive letter  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/6779 [<samp>(df6d7)</samp>](https://github.com/vitest-dev/vitest/commit/df6d750b) - Silence import analysis warning  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/6785 [<samp>(39041)</samp>](https://github.com/vitest-dev/vitest/commit/39041ee5) - **vitest,runner**: - Simplify `test.extend` type exports  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/6707 [<samp>(e5c38)</samp>](https://github.com/vitest-dev/vitest/commit/e5c388f0) ###    🏎 Performance - Use `hash` to replace `createHash`  -  by @btea in https://github.com/vitest-dev/vitest/issues/6703 [<samp>(5d07b)</samp>](https://github.com/vitest-dev/vitest/commit/5d07bba6) #####     [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v2.1.3...v2.1.4)

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