Does it handle asynchronous code and API calls?

Absolutely. It features specific patterns for testing async functions, mocking fetch requests, and handling promise-based logic.

Can I use this to set up code coverage reporting?

Yes, the skill includes configuration patterns for tracking code coverage, setting thresholds, and integrating with CI/CD pipelines.

Which testing frameworks does this skill support?

The skill provides optimized patterns for Jest and Vitest, which are the industry standards for JavaScript and TypeScript testing.

Can this skill help with testing frontend components?

Yes, it includes patterns for Testing Library, making it ideal for testing React, Vue, and other modern frontend frameworks.

JavaScript Testing Patterns

Name: JavaScript Testing Patterns
Author: kivilaid

bykivilaid

•

Security & Testing

Implement robust testing strategies for JavaScript and TypeScript applications using modern frameworks like Jest and Vitest.

This skill empowers Claude to architect and implement comprehensive testing suites for JavaScript and TypeScript projects. It provides domain-specific expertise in configuring testing environments, writing unit and integration tests for complex logic, and mastering advanced mocking patterns for external dependencies. Whether you are bootstrapping a new project's test infrastructure, implementing Test-Driven Development (TDD) workflows, or ensuring high code coverage in CI/CD pipelines, this skill provides the patterns and best practices needed to build reliable, production-grade software.

Key Features

01Automated setup for Jest and Vitest testing environments

02Test-driven development (TDD) and BDD implementation guidance

03Advanced mocking patterns for modules, APIs, and dependencies

04Comprehensive unit testing for functions, classes, and async logic

05Dependency injection strategies for highly testable code architecture

066 GitHub stars

Use Cases

01Bootstrapping test configurations and coverage thresholds for new TypeScript repositories

02Refactoring legacy codebases by adding defensive unit and integration tests

03Mocking complex third-party services like payment gateways or database connectors

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add kivilaid/plugin-marketplace javascript-testing-patterns

For use in Claude.ai and ChatGPT

Download Skill