Vitest v4.0.16 — 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

🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Vitest v4.0.16. Source highlight:    🐞 Bug Fixes

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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.

🔧 Bug Fixes & Patches (6)

Fix browser mode default testTimeout back to 15 seconds  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/9167 <samp>(da0ad)</samp>
Avoid crashing on `process.versions` stub  -  by @AriPerkkio in https://github.com/vitest-dev/vitest/issues/9174 <samp>(78cfb)</samp>
Reject calling suite function inside test  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/9198 <samp>(1a259)</samp>
Allow inlining fully dynamic import  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/9137 <samp>(56851)</samp>
Fix module graph UI on html reporter with headless browser mode  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/9219 <samp>(60642)</samp>
Log deprecated `test.poolOptions` if it's set  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9226 <samp>(f7f6a)</samp>

📄 View Raw Release Notes (Original Developer Log)

###    🐞 Bug Fixes - Fix browser mode default testTimeout back to 15 seconds  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/9167 [<samp>(da0ad)</samp>](https://github.com/vitest-dev/vitest/commit/da0ade249) - Avoid crashing on `process.versions` stub  -  by @AriPerkkio in https://github.com/vitest-dev/vitest/issues/9174 [<samp>(78cfb)</samp>](https://github.com/vitest-dev/vitest/commit/78cfbf99a) - Reject calling suite function inside test  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/9198 [<samp>(1a259)</samp>](https://github.com/vitest-dev/vitest/commit/1a259c340) - Allow inlining fully dynamic import  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/9137 [<samp>(56851)</samp>](https://github.com/vitest-dev/vitest/commit/568513ca6) - Fix module graph UI on html reporter with headless browser mode  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/9219 [<samp>(60642)</samp>](https://github.com/vitest-dev/vitest/commit/60642b304) - Log deprecated `test.poolOptions` if it's set  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9226 [<samp>(f7f6a)</samp>](https://github.com/vitest-dev/vitest/commit/f7f6aa8ba) - **browser**: - Import `recordArtifact` from the vitest package  -  by @macarie in https://github.com/vitest-dev/vitest/issues/9186 [<samp>(01c56)</samp>](https://github.com/vitest-dev/vitest/commit/01c56454d) - Fix `import.meta.env` define  -  by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/9205 [<samp>(01a9a)</samp>](https://github.com/vitest-dev/vitest/commit/01a9a58d9) - String formatting bug when including placeholders in console.log  -  by @michael-debs and @hi-ogawa in https://github.com/vitest-dev/vitest/issues/9030 and https://github.com/vitest-dev/vitest/issues/9131 [<samp>(84a30)</samp>](https://github.com/vitest-dev/vitest/commit/84a306210) - **coverage**: - Istanbul untested files source maps are off  -  by @AriPerkkio in https://github.com/vitest-dev/vitest/issues/9208 [<samp>(372e8)</samp>](https://github.com/vitest-dev/vitest/commit/372e86fde) - **experimental**: - Export `setupEnvironment` for custom pools  -  by @AriPerkkio in https://github.com/vitest-dev/vitest/issues/9187 [<samp>(5d26b)</samp>](https://github.com/vitest-dev/vitest/commit/5d26b87b0) #####     [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v4.0.15...v4.0.16)

← Older Version Vitest v4.0.15 Newer Version → Vitest v4.0.17