Spoonman•3d 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 from the BE as per the instructions, and importing the type in the FE and passing it as a type argument to createTRPCNext. When inspecting 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>({...})), the trpc variable has a complex type attached to it (posted below), but nothing is really typed. when I do trpc.example (one of my procedures), it's any. When I try to get the tRPC HOC (withTRPC), that is 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!

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