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skills/javascript-testing-patterns/SKILL.md

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+---
+name: javascript-testing-patterns
+description: Implement comprehensive testing strategies using Jest, Vitest, and Testing Library for unit tests, integration tests, and end-to-end testing with mocking, fixtures, and test-driven development. Use when writing JavaScript/TypeScript tests, setting up test infrastructure, or implementing TDD/BDD workflows.
+---
+
+# JavaScript Testing Patterns
+
+Comprehensive guide for implementing robust testing strategies in JavaScript/TypeScript applications using modern testing frameworks and best practices.
+
+## Use this skill when
+
+- Setting up test infrastructure for new projects
+- Writing unit tests for functions and classes
+- Creating integration tests for APIs and services
+- Implementing end-to-end tests for user flows
+- Mocking external dependencies and APIs
+- Testing React, Vue, or other frontend components
+- Implementing test-driven development (TDD)
+- Setting up continuous testing in CI/CD pipelines
+
+## Do not use this skill when
+
+- The task is unrelated to javascript testing patterns
+- You need a different domain or tool outside this scope
+
+## Instructions
+
+- Clarify goals, constraints, and required inputs.
+- Apply relevant best practices and validate outcomes.
+- Provide actionable steps and verification.
+- If detailed examples are required, open `resources/implementation-playbook.md`.
+
+## Resources
+
+- `resources/implementation-playbook.md` for detailed patterns and examples.