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"use client";
import { type QueryClient, QueryClientProvider } from "@tanstack/react-query";
import { httpBatchStreamLink, loggerLink } from "@trpc/client";
import { createTRPCReact } from "@trpc/react-query";
import type { inferRouterInputs, inferRouterOutputs } from "@trpc/server";
import { useState } from "react";
import SuperJSON from "superjson";
import type { AppRouter } from "~/server/api/root";
import { createQueryClient } from "./query-client";
let clientQueryClientSingleton: QueryClient | undefined;
const getQueryClient = () => {
if (typeof window === "undefined") {
// Server: always make a new query client
return createQueryClient();
}
// Browser: use singleton pattern to keep the same query client
clientQueryClientSingleton ??= createQueryClient();
return clientQueryClientSingleton;
};
export const api = createTRPCReact<AppRouter>();
/**
* Inference helper for inputs.
*
* @example type HelloInput = RouterInputs['example']['hello']
*/
export type RouterInputs = inferRouterInputs<AppRouter>;
/**
* Inference helper for outputs.
*
* @example type HelloOutput = RouterOutputs['example']['hello']
*/
export type RouterOutputs = inferRouterOutputs<AppRouter>;
export function TRPCReactProvider(props: { children: React.ReactNode }) {
const queryClient = getQueryClient();
const [trpcClient] = useState(() =>
api.createClient({
links: [
loggerLink({
enabled: (op) =>
process.env.NODE_ENV === "development" ||
(op.direction === "down" && op.result instanceof Error),
}),
httpBatchStreamLink({
transformer: SuperJSON,
url: `${getBaseUrl()}/api/trpc`,
headers: () => {
const headers = new Headers();
headers.set("x-trpc-source", "nextjs-react");
return headers;
},
}),
],
}),
);
return (
<QueryClientProvider client={queryClient}>
<api.Provider client={trpcClient} queryClient={queryClient}>
{props.children}
</api.Provider>
</QueryClientProvider>
);
}
function getBaseUrl() {
if (typeof window !== "undefined") return window.location.origin;
if (process.env.VERCEL_URL) return `https://${process.env.VERCEL_URL}`;
return `http://localhost:${process.env.PORT ?? 3000}`;
}
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