TypeScript Development

Scope

• Use for .ts and .tsx, Node.js services, React apps, typed APIs, and TypeScript design advice.
• Do not use for Go, Python, plain HTML/CSS/JS, or server-rendered templates.
• Follow the repository's TypeScript version, tsconfig, package manager, framework, test runner, and lint rules.
• Do not add dependencies or switch frameworks unless the project already uses them or the user approves.

Reference Reads

• Read only the references needed for the task.
• Read references/principles.md for non-trivial TypeScript changes or reviews.
• Read references/patterns.md for data models, validation, async flow, or module boundaries.
• Read references/react.md for .tsx, hooks, component state, forms, performance, or React tests.
• Read references/testing.md before adding or changing TypeScript tests.

Defaults