---
title: "JavaScript Testing Expert - Air Market"
description: "Tests that only pass are not much use; you want ones that catch mistakes and read as an explanation of how the code behaves. This helps you write those, including testing against general rules rather…"
canonical: "https://airmarket.ai/app/javascript-testing-expert"
---

[Air Market](/) / [Developer Tools](/category/devtools) / JavaScript Testing Expert

Skill by [Hong Minhee (洪 民憙)](/@dahlia)

# JavaScript Testing Expert

Write tests that find real bugs and explain the code to the next reader

## What this does

Tests that only pass are not much use; you want ones that catch mistakes and read as an explanation of how the code behaves. This helps you write those, including testing against general rules rather than a handful of examples, and keeping out the kind of code that makes tests unreliable. It does not cover testing a finished app from the outside.

### Top 3 things it does for you

- Write tests that actually catch bugs
- Test against properties instead of hand-picked cases
- Keep a flaky test from getting in

## Information

**JavaScript Testing Expert at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Hong Minhee (洪 民憙)](/@dahlia) |
| Category | [Developer Tools](/category/devtools) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Size | 16 KB |
| Licence | MIT |
| Repository | [dahlia/logtape](https://github.com/dahlia/logtape/tree/abfa44ef15122a37a184b1de00f1fa8bd786e4a9/.agents/skills/javascript-testing-expert) |
| GitHub stars | 1,972 (as of Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of JavaScript Testing Expert and flagged nothing. AIR's verdict: **safe**.

**What JavaScript Testing Expert's check was run against**

|  |  |
| --- | --- |
| Commit | abfa44ef15122a37a184b1de00f1fa8bd786e4a9 |
| Content hash | 8a877c4ad202a8393b974d929f6ec2590ec41d86bf547b3c4f1ae06134a8cbd9 |
| Files read | [Browse the files at this exact commit](https://github.com/dahlia/logtape/blob/abfa44ef15122a37a184b1de00f1fa8bd786e4a9/.agents/skills/javascript-testing-expert/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for JavaScript Testing Expert](/security/javascript-testing-expert)

## About JavaScript Testing Expert

This is an expert-level JavaScript testing skill aimed at high-quality tests: ones that find bugs, serve as documentation, and prevent regressions.

It advocates property-based testing with fast-check and guards against indeterministic code getting into tests. It does not cover black-box end-to-end testing.

## What's inside

- SKILL.md - instructions

## Questions

### Is JavaScript Testing Expert safe to install?

AIR scanned this exact version of JavaScript Testing Expert and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit abfa44ef1512, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/javascript-testing-expert.

### How do I install JavaScript Testing Expert?

Open https://airmarket.ai/app/javascript-testing-expert on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/dahlia/logtape/tree/abfa44ef15122a37a184b1de00f1fa8bd786e4a9/.agents/skills/javascript-testing-expert. Install from that link, not the branch.

## Related on Air Market

- [More Developer Tools listings](/category/devtools)
- [Everything by Hong Minhee (洪 民憙)](/@dahlia)

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Canonical URL: <https://airmarket.ai/app/javascript-testing-expert>