tRPC•17mo ago

Can't get type inference from createTRPCNext instance

Hi everyone,

I have separate FE and BE using tRPC to communicate, in a monorepo environment. The FE app is a simple Next.js app, the BE is tRPC with Express. I'm using Bun as the runtime.

I'm exporting

AppRouter

AppRouter

from the BE as per the instructions, and importing the type in the FE and passing it as a type argument to

createTRPCNext

createTRPCNext

. When inspecting

createTRPCNext

createTRPCNext

in the FE, I can see the type has resolved and the procedures are in there.

However, when I create the FE tRPC instance (

const trpc = createTRPCNext<AppRouter>({...})

const trpc = createTRPCNext<AppRouter>({...})

), the

trpc

trpc

variable has a complex type attached to it (posted below), but nothing is really typed. when I do

trpc.example

trpc.example

(one of my procedures), it's

any

any

. When I try to get the tRPC HOC (

withTRPC

withTRPC

), that is

any

any

also. Why arent the types getting infered properly in the FE? That is what I'm trying to solve at the moment.

The type:

const trpc: ProtectedIntersection<CreateTRPCNextBase<TRouter, TSSRContext>, DecoratedProcedureRecord<TRouter["_def"]["record"], TFlags>>

const trpc: ProtectedIntersection<CreateTRPCNextBase<TRouter, TSSRContext>, DecoratedProcedureRecord<TRouter["_def"]["record"], TFlags>>

Thanks!

tRPC•17mo ago

Spoonman

Can't get type inference from createTRPCNext instance

AppRouter

AppRouter

from the BE as per the instructions, and importing the type in the FE and passing it as a type argument to

createTRPCNext

createTRPCNext

. When inspecting

createTRPCNext

createTRPCNext

in the FE, I can see the type has resolved and the procedures are in there.

However, when I create the FE tRPC instance (

const trpc = createTRPCNext<AppRouter>({...})

const trpc = createTRPCNext<AppRouter>({...})

), the

trpc

trpc

variable has a complex type attached to it (posted below), but nothing is really typed. when I do

trpc.example

trpc.example

(one of my procedures), it's

any

any

. When I try to get the tRPC HOC (

withTRPC

withTRPC

), that is

any

any

also. Why arent the types getting infered properly in the FE? That is what I'm trying to solve at the moment.

The type:

const trpc: ProtectedIntersection<CreateTRPCNextBase<TRouter, TSSRContext>, DecoratedProcedureRecord<TRouter["_def"]["record"], TFlags>>

const trpc: ProtectedIntersection<CreateTRPCNextBase<TRouter, TSSRContext>, DecoratedProcedureRecord<TRouter["_def"]["record"], TFlags>>

Thanks!

Can't get type inference from createTRPCNext instance

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