Vitest v0.34.2 — 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 2 ⚡ Improvements 1 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Vitest v0.34.2. Source highlight:    🚀 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 (2)

Allow importing CSS and assets inside external dependencies when using `--experimental-vm-threads`  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3880 <samp>(f4e6e)</samp>
**vitest**: Allow calling `ctx.skip()` inside the running test  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3966 <samp>(5c88d)</samp>

⚡ Performance & Enhancements (1)

**dot-renderer**: Speed up getTests  -  by @gtm-nayan in https://github.com/vitest-dev/vitest/issues/3923 <samp>(e9404)</samp>

🔧 Bug Fixes & Patches (6)

Don't bundle utils' source-map entry  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3865 <samp>(a08e5)</samp>
Reduce the memory consumption when running --experimental-vm-threads  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3872 <samp>(d1a08)</samp>
Indicator position of error message  -  by @fenghan34 in https://github.com/vitest-dev/vitest/issues/3855 <samp>(3e1e7)</samp>
Don't crash when using --experimental-vm-threads, interop CJS default inside node_modules  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3876 <samp>(0c53e)</samp>
Don't crash if total memory is not supported  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3879 <samp>(7d1f8)</samp>
Check memory and limit value  -  by @sheremet-va <samp>(f8dfb)</samp>

📄 View Raw Release Notes (Original Developer Log)

###    🚀 Features - Allow importing CSS and assets inside external dependencies when using `--experimental-vm-threads`  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3880 [<samp>(f4e6e)</samp>](https://github.com/vitest-dev/vitest/commit/f4e6e99f) - **vitest**: Allow calling `ctx.skip()` inside the running test  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3966 [<samp>(5c88d)</samp>](https://github.com/vitest-dev/vitest/commit/5c88d8e5) ###    🐞 Bug Fixes - Don't bundle utils' source-map entry  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3865 [<samp>(a08e5)</samp>](https://github.com/vitest-dev/vitest/commit/a08e5993) - Reduce the memory consumption when running --experimental-vm-threads  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3872 [<samp>(d1a08)</samp>](https://github.com/vitest-dev/vitest/commit/d1a08c88) - Indicator position of error message  -  by @fenghan34 in https://github.com/vitest-dev/vitest/issues/3855 [<samp>(3e1e7)</samp>](https://github.com/vitest-dev/vitest/commit/3e1e7a1f) - Don't crash when using --experimental-vm-threads, interop CJS default inside node_modules  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3876 [<samp>(0c53e)</samp>](https://github.com/vitest-dev/vitest/commit/0c53e098) - Don't crash if total memory is not supported  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3879 [<samp>(7d1f8)</samp>](https://github.com/vitest-dev/vitest/commit/7d1f86b8) - Check memory and limit value  -  by @sheremet-va [<samp>(f8dfb)</samp>](https://github.com/vitest-dev/vitest/commit/f8dfbd38) - Update module warning as it is moved into server config  -  by @jellyfishgh in https://github.com/vitest-dev/vitest/issues/3931 [<samp>(3a3eb)</samp>](https://github.com/vitest-dev/vitest/commit/3a3eb22c) - Define process variable and using import.meta.env together did not work  -  by @Dunqing in https://github.com/vitest-dev/vitest/issues/3944 [<samp>(e73ca)</samp>](https://github.com/vitest-dev/vitest/commit/e73ca9ed) - Correctly resolve config in a workspace  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3947 [<samp>(1c08d)</samp>](https://github.com/vitest-dev/vitest/commit/1c08d5da) - Don't crash when calling useFakeTimers in VM pool  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3958 [<samp>(91fe4)</samp>](https://github.com/vitest-dev/vitest/commit/91fe4853) - Restrict access to file system via API  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3956 [<samp>(bcb41)</samp>](https://github.com/vitest-dev/vitest/commit/bcb41e51) - Typo of mocks plugin name  -  by @antfu [<samp>(3073b)</samp>](https://github.com/vitest-dev/vitest/commit/3073b9a2) - Build not generated `execute.d.ts`  -  by @btea in https://github.com/vitest-dev/vitest/issues/3970 [<samp>(0f8e6)</samp>](https://github.com/vitest-dev/vitest/commit/0f8e60b7) - **css**: - Don't mock css-module if `?inline` query is specified  -  by @thebanjomatic and **Adam Hines** in https://github.com/vitest-dev/vitest/issues/3952 [<samp>(3891d)</samp>](https://github.com/vitest-dev/vitest/commit/3891d055) - **expect**: - Correctly show async matcher diff  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3960 [<samp>(9423b)</samp>](https://github.com/vitest-dev/vitest/commit/9423b6f8) - **snapshots**: - Update inline snapshot correctly  -  by @fenghan34 in https://github.com/vitest-dev/vitest/issues/3887 [<samp>(7b740)</samp>](https://github.com/vitest-dev/vitest/commit/7b740a27) - **ui**: - Incorrect duration time in vitest ui  -  by @Dunqing in https://github.com/vitest-dev/vitest/issues/3945 [<samp>(35139)</samp>](https://github.com/vitest-dev/vitest/commit/351399f2) - Add support for ui coverage with subdir option  -  by @userquin in https://github.com/vitest-dev/vitest/issues/3917 [<samp>(6ecfc)</samp>](https://github.com/vitest-dev/vitest/commit/6ecfc4e1) - **vitest**: - Use esm module resolution to resolve env  -  by @danielroe in https://github.com/vitest-dev/vitest/issues/3951 [<samp>(edb32)</samp>](https://github.com/vitest-dev/vitest/commit/edb322fe) - Allow rewriting process.env.NODE_MODE when using web transform mode  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3957 [<samp>(eca4b)</samp>](https://github.com/vitest-dev/vitest/commit/eca4b87f) - Only consider cwd when using glob  -  by @g-plane in https://github.com/vitest-dev/vitest/issues/3802 and https://github.com/vitest-dev/vitest/issues/3949 [<samp>(15b4f)</samp>](https://github.com/vitest-dev/vitest/commit/15b4fd6d) - Pass environmentOptions to happy-dom integration  -  by @sheremet-va and **Raul de Melo** in https://github.com/vitest-dev/vitest/issues/3972 [<samp>(6a0cb)</samp>](https://github.com/vitest-dev/vitest/commit/6a0cb647) - **web**: - Correctly resolve assets in new URL  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3950 [<samp>(a428f)</samp>](https://github.com/vitest-dev/vitest/commit/a428f8d4) ###    🏎 Performance - **dot-renderer**: Speed up getTests  -  by @gtm-nayan in https://github.com/vitest-dev/vitest/issues/3923 [<samp>(e9404)</samp>](https://github.com/vitest-dev/vitest/commit/e94044d7) #####     [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v0.34.1...v0.34.2)

← Older Version Vitest v0.34.1 Newer Version → Vitest v0.34.3