---
title: "JavaScript TypeScript Jest - Air Market"
description: "You are writing tests in JavaScript or TypeScript with Jest and keep making judgement calls about structure and mocking on the fly. This gives you the accepted practices: how to lay out tests, how to…"
canonical: "https://airmarket.ai/app/javascript-typescript-jest"
---

[Air Market](/) / [Developer Tools](/category/devtools) / JavaScript TypeScript Jest

Skill by [GitHub](/@github)

# JavaScript TypeScript Jest

Write Jest tests you will still understand next month

## What this does

You are writing tests in JavaScript or TypeScript with Jest and keep making judgement calls about structure and mocking on the fly. This gives you the accepted practices: how to lay out tests, how to approach mocking, and the patterns that come up again and again. Reach for it while writing or tidying a test suite.

### Top 3 things it does for you

- Structure my Jest test files
- Work out what to mock and how
- Follow the common patterns instead of inventing mine

## Information

**JavaScript TypeScript Jest at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [GitHub](/@github) |
| Category | [Developer Tools](/category/devtools) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Size | 2 KB |
| Licence | MIT |
| Repository | [github/awesome-copilot](https://github.com/github/awesome-copilot/tree/90921cc46f4e452ea379e70884d60ec25263f16a/skills/javascript-typescript-jest) |
| GitHub stars | 38,187 (as of Nov 2026) |
| Installs | 14,546, counted by skills.sh (Nov 2026) |

## Security report

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

**What JavaScript TypeScript Jest's check was run against**

|  |  |
| --- | --- |
| Commit | 90921cc46f4e452ea379e70884d60ec25263f16a |
| Content hash | 61b8c37928b0eceef9d2c97187ef448a84602a8e43bb3cf281900842a0527594 |
| Files read | [Browse the files at this exact commit](https://github.com/github/awesome-copilot/blob/90921cc46f4e452ea379e70884d60ec25263f16a/skills/javascript-typescript-jest/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 TypeScript Jest](/security/javascript-typescript-jest)

## About JavaScript TypeScript Jest

This covers best practices for writing JavaScript and TypeScript tests with Jest.

It includes mocking strategies, how to structure your tests, and the patterns that come up commonly.

## What's inside

- SKILL.md - instructions

## Questions

### Is JavaScript TypeScript Jest safe to install?

AIR scanned this exact version of JavaScript TypeScript Jest and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit 90921cc46f4e, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/javascript-typescript-jest.

### How do I install JavaScript TypeScript Jest?

Open https://airmarket.ai/app/javascript-typescript-jest 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/github/awesome-copilot/tree/90921cc46f4e452ea379e70884d60ec25263f16a/skills/javascript-typescript-jest. Install from that link, not the branch.

## Related on Air Market

- [More Developer Tools listings](/category/devtools)
- [Everything by GitHub](/@github)

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Canonical URL: <https://airmarket.ai/app/javascript-typescript-jest>