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 Avoid any ts-no-any.md Handle unknowns ts-use-unknown.md Write components react-functional-only.md Async code async-await-promises.md Avoid legacy libs no-legacy.md 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.