Cannot build my frontend app with tRPC on netlify

Question

I am using React Typescript and I followed the tRPC docs for the server/client setup but I am getting this error. Does anyone know why this happens when deploying? It works fine when I am using it locally?

8:41:46 AM: TS2339: Property 'createClient' does not exist on type '"useContext collides with a built-in method, you should rename this router or procedure on your backend" | "Provider collides with a built-in method, you should rename this router or procedure on your backend" | "createClient collides with a built-in method, you should rename this router or procedure on your backend...'.
8:41:46 AM:   Property 'createClient' does not exist on type '"useContext collides with a built-in method, you should rename this router or procedure on your backend"'.
8:41:46 AM:     42 |   const [queryClient] = useState(() => new QueryClient());
8:41:46 AM:     43 |   const [trpcClient] = useState(() =>
8:41:46 AM:   > 44 |     trpc.createClient({
8:41:46 AM:        |          ^^^^^^^^^^^^
8:41:46 AM:     45 |       links: [
8:41:46 AM:     46 |         httpBatchLink({
8:41:46 AM:     47 |           url: `${process.env.REACT_APP_BACKEND_URL}/trpc`,
8:41:46 AM: ​
8:41:46 AM:   "build.command" failed        

My App.tsx

export default function App() {
  const [queryClient] = useState(() => new QueryClient());
  const [trpcClient] = useState(() =>
    trpc.createClient({
      links: [
        httpBatchLink({
          url: `${process.env.REACT_APP_BACKEND_URL}/trpc`,
        }),
      ],
    })
  );

  return (
    <trpc.Provider client={trpcClient} queryClient={queryClient}>
      <QueryClientProvider client={queryClient}>    
........... rest of code here



        

Answer 1

It's because you're importing trpc from your backend, which works since you've compiled the backend locally but skipped that step when deploying on Netlify/Vercel.