Vitest v0.28.4 — 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

🔧 Bug Fixes 4

⚡ Executive Summary (TL;DR)

Vitest v0.28.4. 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 (4)

Setup correct utils inside asymmetric matchers  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/2768 <samp>(415c8)</samp>
Cjs exports has Object.prototype instead of null  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/2769 <samp>(4fc49)</samp>
Duplicate callbacks in vite-node HMR  -  by @jgoux in https://github.com/vitest-dev/vitest/issues/2792 <samp>(f0333)</samp>
Do not include source files in `onWatcherStart` when `typecheck.ignoreSourceErrors` is true  -  by @mascii and @sheremet-va in https://github.com/vitest-dev/vitest/issues/2774 <samp>(d612e)</samp>

📄 View Raw Release Notes (Original Developer Log)

###    🐞 Bug Fixes - Setup correct utils inside asymmetric matchers  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/2768 [<samp>(415c8)</samp>](https://github.com/vitest-dev/vitest/commit/415c8a93) - Cjs exports has Object.prototype instead of null  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/2769 [<samp>(4fc49)</samp>](https://github.com/vitest-dev/vitest/commit/4fc492c6) - Duplicate callbacks in vite-node HMR  -  by @jgoux in https://github.com/vitest-dev/vitest/issues/2792 [<samp>(f0333)</samp>](https://github.com/vitest-dev/vitest/commit/f03337ae) - Do not include source files in `onWatcherStart` when `typecheck.ignoreSourceErrors` is true  -  by @mascii and @sheremet-va in https://github.com/vitest-dev/vitest/issues/2774 [<samp>(d612e)</samp>](https://github.com/vitest-dev/vitest/commit/d612efdf) #####     [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v0.28.3...v0.28.4)

← Older Version Vitest v0.28.3 Newer Version → Vitest v0.28.5