vitest SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
vitest from b-mendoza/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add b-mendoza/agent-skills/vitest@v2026.9.25Pins v2026.9.25 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- b-mendoza/agent-skills
- Path
.agents/skills/vitest/SKILL.md- Versions recorded
- 3
- Latest version
- v2026.9.25, committed Oct 2, 2026
- First version recorded
- Mar 31, 2026
- Size
- 3,708 bytes
- Repository stars
- 3
- License
- none declared
Vitest fast unit testing framework powered by Vite with Jest-compatible API. Use when writing tests, mocking, configuring coverage, or working with test filtering and fixtures.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
Vitest is a next-generation testing framework powered by Vite. It provides a Jest-compatible API with native ESM, TypeScript, and JSX support out of the box. Vitest shares the same config, transformers, resolvers, and plugins with your Vite app. **Key Features:** - Vite-native: Uses Vite's transformation pipeline for fast HMR-like test updates - Jest-compatible: Drop-in replacement for most Jest test suites - Smart watch mode: Only reruns affected tests based on module graph - Native ESM, TypeScript, JSX support without configuration - Multi-threaded workers for parallel test execution - Built-in coverage via V8 or Istanbul - Snapshot testing, mocking, and spy utilities > The skill is based on Vitest 5.0.1, generated at 2026-09-25. ## Core | Topic | Description | Reference | |-------|-------------|-----------| | Configuration | Vitest and Vite config integration, defineConfig usage | [core-config](references/core-config.md) | | CLI | Command line interface, commands and options | [core-cli](references/core-cli.md) | | Test API | test/it function, modifiers like skip, only, concurrent | [core-test-api](references/core-test-api.md) | …
Read the whole file at its exact version.
How to install
mdr add b-mendoza/agent-skills/vitest@sha256:d0c470a07b90936cThe line at the top of this page pins the label v2026.9.25, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_aqvj22cgjevcvhac)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Mar 31, 2026 and Oct 2, 2026, about one every 92 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v2026.9.25 latest | 2026-10-02 | 354094c | 3,708 B | A | view · diff |
| v2026.6.22 | 2026-08-06 | 5f8173e | 3,713 B | A | view · diff |
| v2026.1.28 | 2026-03-31 | 62ceae7 | 3,308 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3708 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
b-mendoza/agent-skills · 3 stars · license none declared · pushed 2026-10-17 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_aqvj22cgjevcvhac GET https://markdownregistry.com/api/v1/resolve?ref=b-mendoza/agent-skills/vitest GET https://markdownregistry.com/api/v1/blob/d0c470a07b90936ca77fea9fbe25ab657a5bc1f386eb45b18bb70899df7e6baf
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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