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Vitest

Official
supabase·vlatest·testing·Apache-2.0

Official supabase skill covering Supabase, Vitest for working with databases and data persistence.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add supabase/supabase --skill vitest -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

supabase

Matched to the vendor's own GitHub organisation.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned supabase/supabase at 13de8189c9.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
13de8189c9
Manifest
.agents/skills/vitest/SKILL.md
Scanned
18 files, 3,330 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill provides access to Vitest, a testing framework designed as a drop-in replacement for Jest. It leverages Vite's transformation pipeline for fast test updates and offers features like smart watch mode, native support for ESM, TypeScript, and JSX, all without requiring complex configuration. Vitest is particularly useful for projects already using Vite due to its seamless integration with existing configurations, transformers, resolvers, and plugins.

When to use it

  • Testing JavaScript or TypeScript codebases that utilize Vite as a build tool.
  • Migrating from Jest to Vitest for faster test execution and improved developer experience.
  • Developing projects requiring native ESM, TypeScript, or JSX support in tests.
  • Running automated tests with parallel execution using multi-threaded workers.
  • Generating code coverage reports using V8 or Istanbul providers.

Key capabilities

  • Vite-native: Fast test updates leveraging Vite's transformation pipeline.
  • Jest-compatible API: Easy migration from existing Jest test suites.
  • Smart watch mode: Only reruns affected tests based on module dependencies.
  • Native ESM, TypeScript, and JSX support: No extra configuration needed.
  • Multi-threaded workers: Parallel test execution for faster results.
  • Snapshot testing: Compare snapshots of component output over time.
  • Mocking utilities: Mock functions, modules, timers, and dates.
  • Coverage reporting: Generate code coverage reports using V8 or Istanbul.

Example prompts

  • "Run all tests in the src directory."
  • "Execute only the tests matching the pattern *.test.ts."
  • "Generate a code coverage report for the project."
  • "Run the test suite and display results with concurrency enabled."

Tips & gotchas

  • This skill is based on Vitest 3.x, so ensure compatibility with your existing codebase.
  • Vitest integrates seamlessly with Vite configurations; leverage existing vite.config.js or similar files for optimal setup.
  • The skill supports various testing environments including node, jsdom, and happy-dom.