Vitest v4.0.14 — 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 3 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Vitest v4.0.14. Source highlight:    🚀 Experimental Features

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Who Does This Impact? (Role-Based Analysis)

💻 Software Engineers & Devs

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📊 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 (3)

**browser**: Expose `utils.configurePrettyDOM`  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9103 <samp>(2cc34)</samp>
**runner**: Add full names to tasks  -  by @macarie in https://github.com/vitest-dev/vitest/issues/9087 <samp>(821aa)</samp>
**ui**: Add tabbed failure view for `toMatchScreenshot` with comparison slider  -  by @macarie in https://github.com/vitest-dev/vitest/issues/8813 <samp>(c37c2)</samp>

🔧 Bug Fixes & Patches (6)

Externalize before caching  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9077 <samp>(e1b2e)</samp>
Collect the duration of external imports  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9097 <samp>(3326c)</samp>
Rename `collect` to `import`, remove `prepare`  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9091 <samp>(1256b)</samp>
Unsubscribe `onCancel` on rpc destroy  -  by @AriPerkkio in https://github.com/vitest-dev/vitest/issues/9088 <samp>(f5b72)</samp>
Revert the viewport scaling in non-ui mode #9018  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9072 and https://github.com/vitest-dev/vitest/issues/9018 <samp>(64502)</samp>
Invalidate circular modules correctly on rerun with coverage  -  by @aicest in https://github.com/vitest-dev/vitest/issues/9096 <samp>(6f22c)</samp>

📄 View Raw Release Notes (Original Developer Log)

###    🚀 Experimental Features - **browser**: Expose `utils.configurePrettyDOM`  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9103 [<samp>(2cc34)</samp>](https://github.com/vitest-dev/vitest/commit/2cc34e0d4) - **runner**: Add full names to tasks  -  by @macarie in https://github.com/vitest-dev/vitest/issues/9087 [<samp>(821aa)</samp>](https://github.com/vitest-dev/vitest/commit/821aa2002) - **ui**: Add tabbed failure view for `toMatchScreenshot` with comparison slider  -  by @macarie in https://github.com/vitest-dev/vitest/issues/8813 [<samp>(c37c2)</samp>](https://github.com/vitest-dev/vitest/commit/c37c2eb0b) ###    🐞 Bug Fixes - Externalize before caching  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9077 [<samp>(e1b2e)</samp>](https://github.com/vitest-dev/vitest/commit/e1b2e086a) - Collect the duration of external imports  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9097 [<samp>(3326c)</samp>](https://github.com/vitest-dev/vitest/commit/3326cc9f4) - Rename `collect` to `import`, remove `prepare`  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9091 [<samp>(1256b)</samp>](https://github.com/vitest-dev/vitest/commit/1256b5ca3) - **browser**: - Unsubscribe `onCancel` on rpc destroy  -  by @AriPerkkio in https://github.com/vitest-dev/vitest/issues/9088 [<samp>(f5b72)</samp>](https://github.com/vitest-dev/vitest/commit/f5b72374b) - Revert the viewport scaling in non-ui mode #9018  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9072 and https://github.com/vitest-dev/vitest/issues/9018 [<samp>(64502)</samp>](https://github.com/vitest-dev/vitest/commit/64502a2c4) - **coverage**: - Invalidate circular modules correctly on rerun with coverage  -  by @aicest in https://github.com/vitest-dev/vitest/issues/9096 [<samp>(6f22c)</samp>](https://github.com/vitest-dev/vitest/commit/6f22c675f) - **expect**: - Allow function as standard schema  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/9099 [<samp>(ed8a2)</samp>](https://github.com/vitest-dev/vitest/commit/ed8a2ebbd) - **jsdom**: - Reuse abort signals if possible  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9090 [<samp>(2c468)</samp>](https://github.com/vitest-dev/vitest/commit/2c468ee95) - **pool**: - Init `VITEST_POOL_ID` + `VITEST_WORKER_ID` before environment setup  -  by @AriPerkkio in https://github.com/vitest-dev/vitest/issues/9085 [<samp>(37918)</samp>](https://github.com/vitest-dev/vitest/commit/379185b40) - **web-worker**: - `postMessage` to send ports to workers  -  by @whitphx and @AriPerkkio in https://github.com/vitest-dev/vitest/issues/9078 [<samp>(9d176)</samp>](https://github.com/vitest-dev/vitest/commit/9d1763d11) ###    🏎 Performance - Replace `debug` with `obug`  -  by @sxzz and @AriPerkkio in https://github.com/vitest-dev/vitest/issues/9057 [<samp>(acc51)</samp>](https://github.com/vitest-dev/vitest/commit/acc5152b9) #####     [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v4.0.13...v4.0.14)

← Older Version Vitest v4.0.13 Newer Version → Vitest v4.0.15