🎯

javascript-typescript-jest

🎯Skill

from github/awesome-copilot

Installation

Vibe Index InstallInstalls to .claude/skills/

$npx vibeindex add github/awesome-copilot --skill javascript-typescript-jest

skills.sh Install⚠ Installs to .agents/skills/

$npx skills add github/awesome-copilot --skill javascript-typescript-jest

Manual InstallCopy SKILL.md content and save to the path below

path

~/.claude/skills/javascript-typescript-jest/SKILL.md

What it does

Provides Jest best practices for JavaScript/TypeScript testing, covering test structure, mocking strategies with jest.mock and spyOn, async testing, and snapshot testing patterns.

Overview

JavaScript TypeScript Jest is a skill from the Awesome GitHub Copilot collection that provides best practices for writing JavaScript and TypeScript tests using the Jest testing framework. It covers test structure, file naming conventions, mocking strategies with jest.mock and spyOn, async testing patterns, snapshot testing, and React component testing with React Testing Library.

Key Features

Test Structure Guidance - Defines naming conventions (.test.ts/.test.js), file placement, and describe/it block organization patterns
Comprehensive Mocking - Covers jest.mock() for modules, jest.spyOn() for functions, mockImplementation/mockReturnValue, and mock reset strategies
Async Testing Patterns - Provides patterns for testing promises with async/await, resolves/rejects matchers, and timeout management
Snapshot Testing - Guides snapshot test creation for UI components and complex objects with review best practices
React Testing Library Integration - Recommends testing user behavior with userEvent, accessibility-focused queries, and role/label-based selectors

Who is this for?

This skill is designed for JavaScript and TypeScript developers who write tests with Jest and want AI-assisted guidance on testing best practices. It is particularly useful for frontend teams testing React applications who need consistent testing patterns, proper mocking strategies, and guidance on when to use snapshot testing versus behavioral testing.

📦

Same repository

github/awesome-copilot(378 items)

javascript-typescript-jest

SKILL.md

11,900Installs

AddedFeb 25, 2026

View on GitHub Back to Skills

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