cal.pub0.org/packages/trpc/react/trpc.ts

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import type { NextPageContext } from "next/types";
import superjson from "superjson";
import { httpLink } from "../client/links/httpLink";
import { loggerLink } from "../client/links/loggerLink";
import { splitLink } from "../client/links/splitLink";
import { createTRPCNext } from "../next";
// Type-only import:
// https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-8.html#type-only-imports-and-export
import type { TRPCClientErrorLike } from "../react";
import { httpBatchLink } from "../react";
import type { inferRouterInputs, inferRouterOutputs, Maybe } from "../server";
import type { AppRouter } from "../server/routers/_app";
/**
* A set of strongly-typed React hooks from your `AppRouter` type signature with `createTRPCReact`.
* @link https://trpc.io/docs/v10/react#2-create-trpc-hooks
*/
export const trpc = createTRPCNext<AppRouter, NextPageContext, "ExperimentalSuspense">({
config() {
const url =
typeof window !== "undefined"
? "/api/trpc"
: process.env.VERCEL_URL
? `https://${process.env.VERCEL_URL}/api/trpc`
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: `${process.env.NEXT_PUBLIC_WEBAPP_URL}/api/trpc`;
/**
* If you want to use SSR, you need to use the server's full URL
* @link https://trpc.io/docs/ssr
*/
return {
/**
* @link https://trpc.io/docs/links
*/
links: [
// adds pretty logs to your console in development and logs errors in production
loggerLink({
enabled: (opts) =>
!!process.env.NEXT_PUBLIC_DEBUG || (opts.direction === "down" && opts.result instanceof Error),
}),
splitLink({
// check for context property `skipBatch`
condition: (op) => {
return op.context.skipBatch === true;
},
// when condition is true, use normal request
true: httpLink({ url }),
// when condition is false, use batching
false: httpBatchLink({
url,
/** @link https://github.com/trpc/trpc/issues/2008 */
// maxBatchSize: 7
}),
}),
],
/**
* @link https://react-query.tanstack.com/reference/QueryClient
*/
queryClientConfig: {
defaultOptions: {
queries: {
/**
* 1s should be enough to just keep identical query waterfalls low
* @example if one page components uses a query that is also used further down the tree
*/
staleTime: 1000,
/**
* Retry `useQuery()` calls depending on this function
*/
retry(failureCount, _err) {
const err = _err as never as Maybe<TRPCClientErrorLike<AppRouter>>;
const code = err?.data?.code;
if (code === "BAD_REQUEST" || code === "FORBIDDEN" || code === "UNAUTHORIZED") {
// if input data is wrong or you're not authorized there's no point retrying a query
return false;
}
const MAX_QUERY_RETRIES = 3;
return failureCount < MAX_QUERY_RETRIES;
},
},
},
},
/**
* @link https://trpc.io/docs/data-transformers
*/
transformer: superjson,
};
},
/**
* @link https://trpc.io/docs/ssr
*/
ssr: false,
});
export const transformer = superjson;
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export type RouterInputs = inferRouterInputs<AppRouter>;
export type RouterOutputs = inferRouterOutputs<AppRouter>;