TypeScript/JavaScript Test-Driven Development with Vitest, strict red-green-refactor methodology, React component testing, and comprehensive coverage patterns. Use when implementing TypeScript features with TDD, writing Vitest tests, testing React components, developing with test-first approach, or when user mentions 'TypeScript TDD', 'Vitest', 'React testing', 'JavaScript TDD', 'red-green-refactor', 'TypeScript unit tests', or 'test-driven TypeScript'.
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checklists/tdd-quality-checklist.mdexamples/INDEX.mdexamples/api-route-tdd-example.mdexamples/component-tdd-example.mdexamples/hook-tdd-example.mdexamples/utility-tdd-example.mdreference/INDEX.mdreference/react-testing-patterns.mdreference/red-green-refactor.mdreference/test-organization.mdreference/vitest-patterns.mdtemplates/tdd-workflow-checklist.mdtemplates/test-file-template.md