Does this skill support TypeScript?

Yes, it includes specialized patterns and configurations specifically designed for TypeScript testing, including ts-jest and Vitest TS support.

Does it support Test-Driven Development (TDD)?

Yes, it provides workflows and implementation patterns specifically designed to support TDD and BDD cycles within the Claude Code environment.

Which frameworks are supported?

The skill primarily focuses on Jest and Vitest, but the patterns provided are compatible with most modern JavaScript testing libraries.

Can it help with mocking external APIs?

Absolutely. It includes specific patterns for mocking global fetch, node modules like nodemailer, and implementing dependency injection for easier testing.

JavaScript Testing Patterns

Name: JavaScript Testing Patterns
Author: kinneyyan

bykinneyyan

•

Security & Testing

Implements robust testing architectures using Jest, Vitest, and Testing Library for JavaScript and TypeScript applications.

This skill equips Claude with specialized patterns for building comprehensive test suites, covering everything from simple unit tests for pure functions to complex integration and end-to-end flows. It provides standardized configurations for popular frameworks like Jest and Vitest, while promoting best practices in test-driven development (TDD), mocking external dependencies, and dependency injection. Use this skill to automate the creation of high-quality, maintainable tests that ensure application reliability, performance, and coverage across the entire development lifecycle.

Key Features

01Support for TDD and BDD development workflows

02Pre-configured Jest and Vitest setup patterns

032 GitHub stars

04Dependency injection patterns for testable architecture

05Advanced mocking strategies for modules and external APIs

06Comprehensive unit testing for classes and async functions

Use Cases

01Refactoring legacy code with a focus on testability and coverage

02Initializing testing infrastructure for a new TypeScript project

03Writing complex integration tests with mocked external services

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add kinneyyan/prompts javascript-testing-patterns

For use in Claude.ai and ChatGPT

Download Skill