⚠️ Breaking Change
Impact Score: 7/10
Vitest v0.5.0 — 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.
Breaking-change evidence from the source
Breaking Change * `defineConfig` moved from `vitest/node` to `vitest/config`, #799
⚡ Executive Summary (TL;DR)
Vitest v0.5.0. Source highlight: `defineConfig` moved from `vitest/node` to `vitest/config`, #799
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.
⚠️ Breaking Changes & Deprecations (1)
- Breaking Change * `defineConfig` moved from `vitest/node` to `vitest/config`, #799
✨ New Features & Capabilities (1)
- allow changing name pattern during watch mode (#819) (0b2bc38)
🔧 Bug Fixes & Patches (3)
- **config:** ui and api regression (#820) (e8468d2)
- global Event should be equal to env Event (#793) (6ca343a)
- process "data:" in import correctly (#823) (600ca80)
📄 View Raw Release Notes (Original Developer Log)
## Breaking Change
* `defineConfig` moved from `vitest/node` to `vitest/config`, #799
### Bug Fixes
* **config:** ui and api regression ([#820](https://github.com/vitest-dev/vitest/issues/820)) ([e8468d2](https://github.com/vitest-dev/vitest/commit/e8468d2))
* global Event should be equal to env Event ([#793](https://github.com/vitest-dev/vitest/issues/793)) ([6ca343a](https://github.com/vitest-dev/vitest/commit/6ca343a))
* process "data:" in import correctly ([#823](https://github.com/vitest-dev/vitest/issues/823)) ([600ca80](https://github.com/vitest-dev/vitest/commit/600ca80))
### Features
* allow changing name pattern during watch mode ([#819](https://github.com/vitest-dev/vitest/issues/819)) ([0b2bc38](https://github.com/vitest-dev/vitest/commit/0b2bc38))