Impact Score: 5/10
Vitest v0.9.1 — 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 v0.9.1. Source highlight: `displayDiff` with non-string (61fbddb)
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)
- extend `config.outputFile` to allow objects, close #1068 (#1073) (a63cfa2)
🔧 Bug Fixes & Patches (4)
- `displayDiff` with non-string (61fbddb)
- make automocking aware of symbol indexed methods (#1119) (06faf8a)
- re-export mock types (#1120) (45ef020)
- **ui:** fix file error + add colored support (#1108) (b737476)
📄 View Raw Release Notes (Original Developer Log)
### Bug Fixes
* `displayDiff` with non-string ([61fbddb](https://github.com/vitest-dev/vitest/commit/61fbddb))
* make automocking aware of symbol indexed methods ([#1119](https://github.com/vitest-dev/vitest/issues/1119)) ([06faf8a](https://github.com/vitest-dev/vitest/commit/06faf8a))
* re-export mock types ([#1120](https://github.com/vitest-dev/vitest/issues/1120)) ([45ef020](https://github.com/vitest-dev/vitest/commit/45ef020))
### Features
* **ui:** fix file error + add colored support ([#1108](https://github.com/vitest-dev/vitest/issues/1108)) ([b737476](https://github.com/vitest-dev/vitest/commit/b737476))
* extend `config.outputFile` to allow objects, close [#1068](https://github.com/vitest-dev/vitest/issues/1068) ([#1073](https://github.com/vitest-dev/vitest/issues/1073)) ([a63cfa2](https://github.com/vitest-dev/vitest/commit/a63cfa2))