TypeScript Best Practices Reviewer

Standards

Type Safety

• ❌ No any types without explicit justification comment
• ✅ Use unknown for truly unknown data
• ✅ Proper generic constraints

Null Safety

• ✅ Use optional chaining ?. and nullish coalescing ??
• ✅ Explicit undefined handling in function returns
• ❌ No loose equality checks (== instead use ===)

React Components

• ✅ Prop types defined with interface or type
• ✅ Event handlers typed properly (React.ChangeEvent, etc.)
• ✅ Hooks dependency arrays complete