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.