trpc-patterns
Implement ChatJS tRPC routers, TanStack Query hooks, mutations, and cache invalidation. Use when adding or changing tRPC procedures or their React consumers in apps/chat.
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- FranciscoMoretti/chat-js
- 最近来源活动
- 2026年9月12日 06:41
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- trpc-patterns
- description
- Implement ChatJS tRPC routers, TanStack Query hooks, mutations, and cache invalidation. Use when adding or changing tRPC procedures or their React consumers in apps/chat.
# ChatJS tRPC patterns
## Backend
- Add feature routers under `apps/chat/trpc/routers/*.router.ts` and register them in `apps/chat/trpc/routers/_app.ts`.
- Use `protectedProcedure` for authenticated operations.
- Validate inputs with Zod and verify ownership before mutations.
- Keep database access in `apps/chat/lib/db/queries.ts`.
## React queries
Use `useTRPC()` with TanStack Query:
```tsx
const trpc = useTRPC();
const query = useQuery({
...trpc.feature.list.queryOptions(),
enabled: Boolean(condition),
});
```
For mutations, use generated mutation options and invalidate related keys after success:
```tsx
const trpc = useTRPC();
const queryClient = useQueryClient();
const mutation = useMutation(
trpc.feature.update.mutationOptions({
onSuccess: () =>
queryClient.invalidateQueries({
queryKey: trpc.feature.list.queryKey(),
}),
})
);
```
Handle loading and error states in the consumer.
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