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vitest-dev/vitest

v5.1.0

Curated build tool / testing repository (vitest-dev/vitest) tracked via conditional GitHub .atom polling.

COMPATIBLE
What is vitest-dev/vitest?

vitest is an open-source library and developer tool in the vitest-dev/vitest ecosystem. It saves developers from writing repetitive low-level boilerplate from scratch by providing a battle-tested, open-source implementation ready for production.

BUILD_TOOLnpm:vitestTypeScriptreleases.atom
17,345+26 stars (24h)
#vitest
AI Executive Summary & Artifact Size Impact
Quick Summary: What Changed · What To Do · Upgrade Effort

Add --last-failed to run only failed tests - by @shereme. Drop-in upgrade. Migration: None.

Semver: MINOR·Manifest: package.json
Artifact Size Impactunavailable
Size Unavailable
Telemetry unmeasured for pre-release or source-only registry build
Breaking Changes, Release Highlights & Migration Snippet

Key Release Highlights (v5.1.0)

  • Add --last-failed to run only failed tests - by @sheremet-va in #11558 (82f63)
  • Support Temporal.Instant and Temporal.ZonedDateTime in vi.setSystemTime() - by @Prajwal2246, Prajwal2246, Claude Opus 5.5 (1M context), @hi-ogawa and **Codex (GPT-...
  • Introduce --since-last-run flag - by @sheremet-va in #11516 (08bd9)
  • Expose per-retry/repeat attempt result - by @hi-ogawa, Codex (GPT-6) and Claude Opus 5.5 (1M context) in #11232 (21be4)
Zero Breaking Changes Detected

Verified safe drop-in upgrade for vitest in package.json.

Copy-Paste Upgrade / Migration Snippet
npm install vitest@5.1.0

Ecosystem Compatibility Matrix & Verified Graph Warnings

TypeScript 5.xcompatible— Ships standard TypeScript declaration files without type regressions.

Zero-Noise Historical Release Timeline (1)

Format: [Core Change] + [Required Action] + [Migration Effort]
v5.1.0COMPATIBLE⚖️ Size Unavailable

Add --last-failed to run only failed tests - by @shereme. Drop-in upgrade. Migration: None.

Upgrade & Migration Q&A (vitest-dev/vitest v5.1.0)

Direct Answers for Engineers & AI Agents

Is vitest-dev/vitest v5.1.0 safe to upgrade in production?

vitest-dev/vitest v5.1.0 is classified as COMPATIBLE (MINOR release). Add --last-failed to run only failed tests - by @shereme. Drop-in upgrade. Migration: None.

What breaking changes or compatibility risks exist in vitest-dev/vitest v5.1.0?

No breaking API changes or peer dependency conflicts are recorded for vitest-dev/vitest v5.1.0 in the RepoSense compatibility graph.

What is the bundle size impact of vitest v5.1.0?

Measured bundle size telemetry is currently unavailable for vitest v5.1.0; verify build output locally before deploying.

How do I upgrade vitest to v5.1.0?

Upgrade vitest to v5.1.0 by running "npm install vitest@5.1.0" and applying the migration steps: npm install vitest@5.1.0