Vitest v4.0.18 — 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 3

⚡ Executive Summary (TL;DR)

Vitest v4.0.18. Source highlight:    🚀 Experimental Features

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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.

✨ New Features & Capabilities (1)

**experimental**: Add `onModuleRunner` hook to `worker.init`  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9286 <samp>(ea837)</samp>

🔧 Bug Fixes & Patches (3)

Use `meta.url` in `createRequire`  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9441 <samp>(e0572)</samp>
**browser**: Hide injected data-testid attributes  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9503 <samp>(f8989)</samp>
**ui**: Process artifact attachments when generating HTML reporter  -  by @macarie in https://github.com/vitest-dev/vitest/issues/9472 <samp>(22543)</samp>

📄 View Raw Release Notes (Original Developer Log)

###    🚀 Experimental Features - **experimental**: Add `onModuleRunner` hook to `worker.init`  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9286 [<samp>(ea837)</samp>](https://github.com/vitest-dev/vitest/commit/ea837de7d) ###    🐞 Bug Fixes - Use `meta.url` in `createRequire`  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9441 [<samp>(e0572)</samp>](https://github.com/vitest-dev/vitest/commit/e057281ca) - **browser**: Hide injected data-testid attributes  -  by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9503 [<samp>(f8989)</samp>](https://github.com/vitest-dev/vitest/commit/f89899cd8) - **ui**: Process artifact attachments when generating HTML reporter  -  by @macarie in https://github.com/vitest-dev/vitest/issues/9472 [<samp>(22543)</samp>](https://github.com/vitest-dev/vitest/commit/225435647) #####     [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v4.0.17...v4.0.18)

← Older Version Vitest v4.0.17 Newer Version → Vitest v4.1.0