Vitest v0.26.3 — 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 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Vitest v0.26.3. 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 (1)

**mock**: Expose a `importOriginal` helper to the factory  -  by @antfu in https://github.com/vitest-dev/vitest/issues/2551 <samp>(853ee)</samp>

🔧 Bug Fixes & Patches (6)

Correctly automock nested interoped defaults  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/2559 <samp>(a431d)</samp>
Start tracking module resolution as soon as possible for easier tracking  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/2560 <samp>(9f41e)</samp>
Don't hang when mocking module with circular dependency  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/2572 <samp>(c479d)</samp>
Show list of tests when typechecking  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/2585 <samp>(32a57)</samp>
**api**: Make api parse error stacks and return sourcePos in onTaskUpdate  -  by @adrienbaron in https://github.com/vitest-dev/vitest/issues/2563 <samp>(ef77d)</samp>
**coverage**: Env-replacer to remove query params from sourcemaps filenames  -  by @AriPerkkio in https://github.com/vitest-dev/vitest/issues/2584 <samp>(dba13)</samp>

📄 View Raw Release Notes (Original Developer Log)

###    🚀 Features - **mock**: Expose a `importOriginal` helper to the factory  -  by @antfu in https://github.com/vitest-dev/vitest/issues/2551 [<samp>(853ee)</samp>](https://github.com/vitest-dev/vitest/commit/853eeddb) ###    🐞 Bug Fixes - Correctly automock nested interoped defaults  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/2559 [<samp>(a431d)</samp>](https://github.com/vitest-dev/vitest/commit/a431df80) - Start tracking module resolution as soon as possible for easier tracking  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/2560 [<samp>(9f41e)</samp>](https://github.com/vitest-dev/vitest/commit/9f41edda) - Don't hang when mocking module with circular dependency  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/2572 [<samp>(c479d)</samp>](https://github.com/vitest-dev/vitest/commit/c479d9c0) - Show list of tests when typechecking  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/2585 [<samp>(32a57)</samp>](https://github.com/vitest-dev/vitest/commit/32a577b1) - **api**: Make api parse error stacks and return sourcePos in onTaskUpdate  -  by @adrienbaron in https://github.com/vitest-dev/vitest/issues/2563 [<samp>(ef77d)</samp>](https://github.com/vitest-dev/vitest/commit/ef77dccf) - **coverage**: Env-replacer to remove query params from sourcemaps filenames  -  by @AriPerkkio in https://github.com/vitest-dev/vitest/issues/2584 [<samp>(dba13)</samp>](https://github.com/vitest-dev/vitest/commit/dba13374) #####     [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v0.26.2...v0.26.3)

← Older Version Vitest v0.26.2 Newer Version → Vitest v0.27.0