Code Standards

Write code that is accessible, performant, type-safe, and maintainable.

Activation Conditions

• Linting errors need fixing
• Code formatting issues
• Code review feedback
• Questions about style guidelines

Quick Reference

Action	Rule
Write components	react-functional-only.md
Async code	async-await-promises.md
Avoid legacy libs	no-legacy.md

any types and top-level regex are enforced by Biome (noExplicitAny, useTopLevelRegex).

Commands

bun x ultracite fix     # Format and fix
bun x ultracite check   # Check for issues
bun x ultracite doctor  # Diagnose setup

Quick Fix

Most issues are auto-fixed:

bun x ultracite fix

Console Logging

• Never use console.log, console.debug, or console.info in production code
• Only use console.error and console.warn for actionable errors
• For debug logging, wrap in if (IsDev) { ... }
• Don't use biome-ignore to suppress console warnings - remove the logs instead

Rules

See rules/ directory for detailed guidance.