ship

Enforce the no-useEffect rule when writing or reviewing React code. ACTIVATE when writing React components, refactoring existing useEffect calls, reviewing PRs with useEffect, or when an agent adds useEffect "just in case." Provides the five replacement patterns and the useMountEffect escape hatch.

Write and consume TanStack Start server functions — the web-only data layer. ACTIVATE when adding backend logic to a web-only Ship app (no apps/api), fetching data in a route loader, or when an agent reaches for createServerFn. Enforces importing createServerFn from @tanstack/react-start (NOT @tanstack/react-router), the createServerFn({ method }).handler() shape with optional .inputValidator(zodSchema), and consuming via a route loader + Route.useLoaderData(). Covers when to use server functions vs the oRPC client.