test-ts SKILL.md skillA

test-ts from sergeyklay/.agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add sergeyklay/.agents/test-ts@v1.0

Pins v1.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
sergeyklay/.agents
Path
.agents/skills/test-ts/SKILL.md
Versions recorded
2
Latest version
v1.0, committed May 5, 2026
First version recorded
Apr 27, 2026
Size
15,477 bytes
Repository stars
6
License
Apache-2.0

Write, review, and run TypeScript/React tests for this Next.js 16 App Router project. Use whenever writing or modifying *.test.ts or *.test.tsx files, adding test coverage to components, hooks, Server Actions, or utilities, setting up Vitest configuration, or asked about testing strategy. Covers Vitest (the project's test runner, not Jest), React Testing Library v16, accessibility-first queries, user-event for interactions, AAA structure, parameterized tests with describe.each and it.each…

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

# TypeScript/React testing

This project uses **Vitest** as the test runner. The Next.js 16 official documentation recommends Vitest over Jest for App Router projects: native ESM and TypeScript support require no additional transformation configuration, and Vitest runs 3–5x faster than Jest on equivalent suites. Do not introduce Jest.

## Test runner commands

```bash
npm test                                   # run all tests once
npm run test:watch                         # watch mode
npm run test:coverage                      # with coverage report

# Targeted runs
npx vitest run src/components/invoice/     # run tests in a directory
npx vitest run -t "renders the client"     # filter by test name pattern
npx vitest run path/to/component.test.tsx  # run a single file
```

## Decision framework

Before writing any test, classify it:

| Category | What it covers | Vitest environment |
|---|---|---|
| **Unit** | Pure functions, utilities, Zod schemas, computed logic | `node` |
| **Component** | Client Components rendered with RTL | `jsdom` |
| **Hook** | Custom hooks via `renderHook` | `jsdom` |
| **Server Action** | `'use server'` functions with mocked Prisma | `node` |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add sergeyklay/.agents/test-ts@sha256:f5daaf55e4d5d146

The line at the top of this page pins the label v1.0, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_vadxl7ip4yxpmet4.svg)](https://markdownregistry.com/a/art_vadxl7ip4yxpmet4)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, between Apr 27, 2026 and May 5, 2026, about one every 8 days.

versioncommittedcommitsizeaudit
v1.0 latest2026-05-05 b755ef0 15,477 BA view · diff
git:20260427.88dd6802026-04-27 88dd680 15,481 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (15477 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

GitHub

sergeyklay/.agents · 6 stars · license Apache-2.0 · pushed 2026-11-04 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_vadxl7ip4yxpmet4
GET https://markdownregistry.com/api/v1/resolve?ref=sergeyklay/.agents/test-ts
GET https://markdownregistry.com/api/v1/blob/f5daaf55e4d5d146b7bc73f5d6f4f39dd77ef3b7945781c6ab53f137443c3af7

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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