Is it compatible with TypeScript projects?

Yes, all provided patterns and configurations are designed with TypeScript first in mind, ensuring type safety throughout your test suites and infrastructure.

Can I use this for frontend component testing?

Absolutely. While the core focuses on logic, the patterns are compatible with Testing Library, which is the standard for testing React, Vue, and other component-based frameworks.

How does this handle external API dependencies?

It includes specific patterns for mocking modules, spying on functions, and using dependency injection to isolate code from external API calls during testing.

Does this skill support both Jest and Vitest?

Yes, it includes configuration templates and implementation patterns for both the industry-standard Jest framework and the modern, high-performance Vitest runner.

JavaScript Testing Patterns

Name: JavaScript Testing Patterns
Author: Microck

byMicrock

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Security & Testing

Implements robust testing architectures using Jest and Vitest to ensure code quality through unit, integration, and end-to-end test patterns.

This skill provides a comprehensive framework for implementing high-quality testing strategies in JavaScript and TypeScript environments. It offers standardized patterns for configuring modern test runners like Jest and Vitest, handling complex mocking scenarios, and testing asynchronous operations. Whether setting up a new project's test infrastructure or refactoring legacy code for better testability using Dependency Injection and Spying, this skill ensures that development workflows adhere to TDD/BDD best practices and maintain high coverage across API services and frontend components.

Key Features

01Standardized configurations for Jest and Vitest with TypeScript support

02Integration and E2E testing workflows for APIs and user flows

032 GitHub stars

04Advanced mocking strategies for modules and external dependencies

05Dependency injection patterns for decoupled, testable code architecture

06Unit testing patterns for pure functions, classes, and async logic

Use Cases

01Bootstrapping test-ready infrastructure for new Node.js or Vite projects

02Mocking external dependencies like email services or third-party APIs during development

03Implementing TDD workflows for complex business logic and async services

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add microck/opendots-microck javascript-testing-patterns

For use in Claude.ai and ChatGPT

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