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Vitest Changelog & Release History

Vite-powered testing framework for JavaScript and TypeScript projects.

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Partial archive: 58 tracked releases, Feb 03, 2025–Oct 15, 2026. Includes multiple channels and packages. Coverage & limitations.

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Tracked Releases
58
Newest tracked stable: v4.1.12
Average Impact Score
5.1/10
AI-evaluated significance
Source-flagged Breaking Releases
3%
2 of 58 tracked releases have source flags
Release Impact Pulse (Recent → Oldest)
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Summarize tracked notes between two versions of the same package and channel. Gaps may exist: this is not a complete migration plan or a safety guarantee.

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Tracked Vitest Releases (58) · Full archive →
v5.0.0stable Sep 03, 2026
⚠️ Breaking Impact 7/10

Vitest v5.0.0 — Release Notes & Engineering Impact

Vitest v5.0.0. Source highlight: Vitest 5 is officially out! This release focuses on performance and brings a lot of new features while fixing long-standing bugs. See our blog post for the official announcement.

✨ 6 features • ⚡ 6 improvements • 🔧 6 fixes Read Release Breakdown →
v4.1.9stable Jun 16, 2026
Impact 5/10

Vitest v4.1.9 — Release Notes & Engineering Impact

Vitest v4.1.9. Source highlight: Fix `importOriginal` with optimizer and query import [backport to v4] - by **Hiroshi Ogawa**, **David Harris**, **Codex**and **Vladimir** in https://github.com/vitest-dev/vitest/issues/10546 <samp>(a5180)</samp>

✨ 0 features • ⚡ 0 improvements • 🔧 5 fixes Read Release Breakdown →