javascript-typescript-jest — Skills

What it does

Name test files with .test.ts or .test.js suffix

Place test files next to the code they test or in a dedicated tests directory

Use descriptive test names that explain the expected behavior

Use nested describe blocks to organize related tests

Follow the pattern: describe('Component/Function/Class', () => { it('should do something', () => {}) })

Mock external dependencies (APIs, databases, etc.) to isolate your tests

Use jest.mock() for module-level mocks

Jest testing best practices for JavaScript and TypeScript projects with mocking, async handling, and React patterns.

Source

Repository: https://github.com/github/awesome-copilot

javascript-typescript-jest FAQ

What does the javascript-typescript-jest skill do?

Best practices for writing JavaScript/TypeScript tests using Jest, including mocking strategies, test structure, and common patterns. Name test files with .test.ts or .test.js suffix Place test files next to the code they test or in a dedicated tests directory

How do I install javascript-typescript-jest?

Run: npx -y skills add https://github.com/github/awesome-copilot --skill javascript-typescript-jest --agent claude-code — the source lives at github.com/github/awesome-copilot.

Maintain javascript-typescript-jest?

Let people know it's listed here — add the badge (live metrics, light/dark aware) or a plain link to your README or docs.

[![javascript-typescript-jest on getagentictools](https://getagentictools.com/badge/skills/github-awesome-copilot-javascript-typescript-jest.svg)](https://getagentictools.com/skills/github-awesome-copilot-javascript-typescript-jest?ref=badge)

npx agentictools info skills/github-awesome-copilot-javascript-typescript-jest

The second line is the CLI lookup for this page — handy in READMEs and docs.