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Code Quality Standards

Naming Conventions

Files: kebab-case utilities, PascalCase components, camelCase hooks

Variables: camelCase functions/vars, PascalCase classes, UPPER_SNAKE constants

Descriptive: isLoading not loading, handleSubmit not submit

TypeScript Rules

No any - use unknown for truly unknown
interface for objects, type for unions/intersections
Explicit function return types
Generics for reusable type-safe code
Strict mode always enabled

Testing Philosophy

Test user interactions, not implementation
Mock external dependencies
Integration tests for critical paths
Unit tests for complex logic
Target >80% coverage on critical code

Error Handling

Custom error classes for different types
Centralized error handling
Structured logging with context
Never expose stack traces in production
Proper HTTP status codes (400, 401, 404, 500)

Git Standards

Commit Format: <type>(<scope>): <subject>

Types: feat, fix, docs, style, refactor, test, chore

Example: feat(auth): add password reset

PR Requirements:

TypeScript compiles
ESLint passes
Tests pass, coverage >80%
No console.logs
Meaningful commits
Clear description