Impact Score: 5/10
Vitest v0.18.1 — 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.
⚡ Executive Summary (TL;DR)
Vitest v0.18.1. Source highlight: 🚀 Features
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)
- Make fallbackCJS mode try resolve from `/es/...` and `/lib/...` -
🔧 Bug Fixes & Patches (3)
- Add spec to defaults to exclude from coverage (fix #1612) -
- Mock properties of classes/functions (fix #1523) -
- **types**: Fix `test.each` and `describe.each` types -
📄 View Raw Release Notes (Original Developer Log)
### 🚀 Features
- Make fallbackCJS mode try resolve from `/es/...` and `/lib/...` - by @zthxxx in https://github.com/vitest-dev/vitest/issues/1633
### 🐞 Bug Fixes
- Add spec to defaults to exclude from coverage (fix #1612) - by @pandyarudra in https://github.com/vitest-dev/vitest/issues/1627
- Mock properties of classes/functions (fix #1523) - by @simon-abbott in https://github.com/vitest-dev/vitest/issues/1648
- **types**: Fix `test.each` and `describe.each` types - by @Demivan in https://github.com/vitest-dev/vitest/issues/1653
##### [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v0.18.0...v0.18.1)