funki
funki•8mo ago

How can i use inferprocedureoutput?

I'd like to write this code type-safely:
const handleQuery = (query: /* ? */) => {}

const MyComponent = () => {
  const query = trpc.foo.useQuery()
  handleQuery(query)
  // ...
}
const handleQuery = (query: /* ? */) => {}

const MyComponent = () => {
  const query = trpc.foo.useQuery()
  handleQuery(query)
  // ...
}
I'm pretty sure i need to use inferProcedureOutput but i couldn't figure out what to pass. I can never access query.isLoading for example.
2 Replies
funki
funki•8mo ago
Seems like i actually need something like
type RouterOutputs = inferRouterOutputs<AppRouter>
UseTRPCQueryResult<RouterOutputs["foo"], TRPCClientErrorLike<AppRouter>>
type RouterOutputs = inferRouterOutputs<AppRouter>
UseTRPCQueryResult<RouterOutputs["foo"], TRPCClientErrorLike<AppRouter>>
but i don't understand why i need to pass TRPCClientErrorLike
Alex / KATT 🐱
Alex / KATT 🐱•8mo ago
https://trpc.io/docs/client/vanilla/infer-types
Inferring Types | tRPC
It is often useful to access the types of your API within your clients. For this purpose, you are able to infer the types contained in your AppRouter.
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