trpc

apps/web/next.config.js

@@ -2,7 +2,7 @@ import './src/env.js';
 
 /** @type {import('next').NextConfig} */
 const nextConfig = {
-  transpilePackages: ['@orbitkit/db', '@orbitkit/auth'],
+  transpilePackages: ['@orbitkit/db', '@orbitkit/auth', '@orbitkit/trpc'],
 };
 
 export default nextConfig;

apps/web/package.json

@@ -16,14 +16,21 @@
   "dependencies": {
     "@orbitkit/auth": "workspace:^",
     "@orbitkit/db": "workspace:^",
+    "@orbitkit/trpc": "workspace:^",
     "@orbitkit/ui": "workspace:^",
     "@t3-oss/env-nextjs": "^0.8.0",
+    "@tanstack/react-query": "4.36.1",
     "@total-typescript/ts-reset": "^0.5.1",
+    "@trpc/client": "^10.45.1",
+    "@trpc/react-query": "^10.45.1",
+    "@trpc/server": "^10.45.1",
     "geist": "^1.2.2",
     "next": "14.1.0",
     "next-themes": "^0.2.1",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
+    "server-only": "^0.0.1",
+    "superjson": "^2.2.1",
     "zod": "^3.22.4"
   },
   "devDependencies": {

apps/web/src/app/api/trpc/[trpc]/route.ts

@@ -0,0 +1,29 @@
+import { type NextRequest } from 'next/server';
+
+import { fetchRequestHandler } from '@trpc/server/adapters/fetch';
+
+import { appRouter, createTRPCContext } from '@orbitkit/trpc';
+
+import { env } from '@/env';
+
+const createContext = async (req: NextRequest) => {
+  return createTRPCContext({
+    headers: req.headers,
+  });
+};
+
+const handler = (req: NextRequest) =>
+  fetchRequestHandler({
+    endpoint: '/api/trpc',
+    req,
+    router: appRouter,
+    createContext: () => createContext(req),
+    onError: ({ path, error }) => {
+      env.NODE_ENV === 'development' &&
+        console.error(
+          `❌ tRPC failed on ${path ?? '<no-path>'}: ${error.message}`,
+        );
+    },
+  });
+
+export { handler as GET, handler as POST };

apps/web/src/app/page.tsx

@@ -3,15 +3,22 @@ import { redirect } from 'next/navigation';
 import { getSession } from '@orbitkit/auth';
 import { Avatar, AvatarFallback, AvatarImage } from '@orbitkit/ui/avatar';
 
+import { ThemeSwitcher } from '@/components/ThemeSwitcher';
+import { trpc } from '@/lib/trpc/server';
+
 export default async function Home() {
   const { user } = await getSession();
   if (!user) {
     return redirect('/login');
   }
 
+  const hello = await trpc.greeting.protectedHello.query();
+
   return (
     <main className="container mx-auto py-6 px-6">
       <h1>Next.js app</h1>
+      <h1>{hello.greeting}</h1>
+      <ThemeSwitcher />
       <Avatar>
         <AvatarImage src="https://github.com/shadcn.png" alt="@shadcn" />
         <AvatarFallback>CN</AvatarFallback>

apps/web/src/app/providers.tsx

@@ -3,10 +3,12 @@
 import { type FC, type PropsWithChildren } from 'react';
 import { ThemeProvider as NextThemesProvider } from 'next-themes';
 
+import { TRPCReactProvider } from '@/lib/trpc/client';
+
 export const Providers: FC<PropsWithChildren> = ({ children }) => {
   return (
     <NextThemesProvider attribute="class" enableSystem>
-      {children}
+      <TRPCReactProvider>{children}</TRPCReactProvider>
     </NextThemesProvider>
   );
 };

apps/web/src/env.js

@@ -1,13 +1,20 @@
 import { createEnv } from '@t3-oss/env-nextjs';
 import { vercel } from '@t3-oss/env-nextjs/presets';
+import { z } from 'zod';
 
 import { env as authEnv } from '@orbitkit/auth/env';
 import { env as dbEnv } from '@orbitkit/db/env';
 
 export const env = createEnv({
   extends: [dbEnv, authEnv, vercel],
-  server: {},
+  server: {
+    NODE_ENV: z.enum(['development', 'test', 'production']).optional(),
+    PORT: z.coerce.number().default(3000),
+  },
   client: {},
-  runtimeEnv: {},
+  runtimeEnv: {
+    NODE_ENV: process.env.NODE_ENV,
+    PORT: process.env['PORT'],
+  },
   emptyStringAsUndefined: true,
 });

apps/web/src/lib/trpc/client.tsx

@@ -0,0 +1,44 @@
+'use client';
+
+import { useState } from 'react';
+
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
+import { loggerLink, unstable_httpBatchStreamLink } from '@trpc/client';
+import { createTRPCReact } from '@trpc/react-query';
+import superjson from 'superjson';
+
+import { type AppRouter } from '@orbitkit/trpc';
+
+import { env } from '@/env';
+
+import { getUrl } from './shared';
+
+export const trpc = createTRPCReact<AppRouter>();
+
+export function TRPCReactProvider(props: { children: React.ReactNode }) {
+  const [queryClient] = useState(() => new QueryClient());
+
+  const [trpcClient] = useState(() =>
+    trpc.createClient({
+      transformer: superjson,
+      links: [
+        loggerLink({
+          enabled: (op) =>
+            env.NODE_ENV === 'development' ||
+            (op.direction === 'down' && op.result instanceof Error),
+        }),
+        unstable_httpBatchStreamLink({
+          url: getUrl(),
+        }),
+      ],
+    }),
+  );
+
+  return (
+    <QueryClientProvider client={queryClient}>
+      <trpc.Provider client={trpcClient} queryClient={queryClient}>
+        {props.children}
+      </trpc.Provider>
+    </QueryClientProvider>
+  );
+}

apps/web/src/lib/trpc/server.ts

@@ -0,0 +1,59 @@
+import 'server-only';
+
+import { cache } from 'react';
+import { headers } from 'next/headers';
+
+import type { AppRouter } from '@orbitkit/trpc';
+
+import {
+  createTRPCProxyClient,
+  loggerLink,
+  TRPCClientError,
+} from '@trpc/client';
+import { callProcedure } from '@trpc/server';
+import { observable } from '@trpc/server/observable';
+import { type TRPCErrorResponse } from '@trpc/server/rpc';
+import superjson from 'superjson';
+
+import { appRouter, createTRPCContext } from '@orbitkit/trpc';
+
+const createContext = cache(() => {
+  const heads = new Headers(headers());
+  heads.set('x-trpc-source', 'rsc');
+
+  return createTRPCContext({
+    headers: heads,
+  });
+});
+
+export const trpc = createTRPCProxyClient<AppRouter>({
+  transformer: superjson,
+  links: [
+    loggerLink({
+      enabled: (op) =>
+        process.env.NODE_ENV === 'development' ||
+        (op.direction === 'down' && op.result instanceof Error),
+    }),
+    () =>
+      ({ op }) =>
+        observable((observer) => {
+          createContext()
+            .then((ctx) => {
+              return callProcedure({
+                procedures: appRouter._def.procedures,
+                path: op.path,
+                rawInput: op.input,
+                ctx,
+                type: op.type,
+              });
+            })
+            .then((data) => {
+              observer.next({ result: { data } });
+              observer.complete();
+            })
+            .catch((cause: TRPCErrorResponse) => {
+              observer.error(TRPCClientError.from(cause));
+            });
+        }),
+  ],
+});

apps/web/src/lib/trpc/shared.ts

@@ -0,0 +1,18 @@
+import { type inferRouterInputs, type inferRouterOutputs } from '@trpc/server';
+
+import { type AppRouter } from '@orbitkit/trpc';
+
+import { env } from '@/env';
+
+function getBaseUrl() {
+  if (typeof window !== 'undefined') return '';
+  if (env.VERCEL_URL) return `https://${env.VERCEL_URL}`;
+  return `http://localhost:${env.PORT}`;
+}
+
+export function getUrl() {
+  return getBaseUrl() + '/api/trpc';
+}
+
+export type RouterInputs = inferRouterInputs<AppRouter>;
+export type RouterOutputs = inferRouterOutputs<AppRouter>;

cspell.config.yaml

@@ -25,7 +25,10 @@ words:
   - packagejson
   - shadcn
   - stylesheet
+  - superjson
   - tailwindcss
+  - tanstack
+  - trpc
   - tsbuildinfo
   - tsconfigs
   - tsup

package.json

@@ -39,7 +39,7 @@
     "prettier-plugin-packagejson": "^2.4.10",
     "prettier-plugin-tailwindcss": "^0.5.11",
     "rimraf": "^5.0.5",
-    "turbo": "^1.12.2",
+    "turbo": "^1.12.3",
     "typescript": "^5.3.3"
   },
   "packageManager": "[email protected]",

packages/auth/package.json

@@ -25,7 +25,7 @@
     "arctic": "^1.1.4",
     "lucia": "^3.0.1",
     "next": "14.1.0",
-    "oslo": "^1.0.4",
+    "oslo": "^1.1.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "zod": "^3.22.4"

packages/db/package.json

@@ -25,7 +25,7 @@
     "typecheck": "tsc --noEmit --tsBuildInfoFile .tsbuildinfo"
   },
   "dependencies": {
-    "@neondatabase/serverless": "^0.7.2",
+    "@neondatabase/serverless": "^0.8.1",
     "@t3-oss/env-core": "^0.8.0",
     "drizzle-orm": "^0.29.3",
     "pg": "^8.11.3",

packages/trpc/.eslintrc.cjs

@@ -0,0 +1,7 @@
+/** @type {import('eslint').Linter.Config} */
+const config = {
+  root: true,
+  extends: ['orbitkit/base'],
+};
+
+module.exports = config;

packages/trpc/package.json

@@ -0,0 +1,31 @@
+{
+  "name": "@orbitkit/trpc",
+  "version": "0.1.0",
+  "private": true,
+  "description": "tRPC api for Orbitkit",
+  "license": "MIT",
+  "author": "Orbitkit",
+  "type": "module",
+  "exports": {
+    ".": "./src/index.ts"
+  },
+  "scripts": {
+    "lint": "eslint . --cache --max-warnings 0",
+    "typecheck": "tsc --noEmit --tsBuildInfoFile .tsbuildinfo"
+  },
+  "dependencies": {
+    "@orbitkit/auth": "workspace:^",
+    "@orbitkit/db": "workspace:^",
+    "@trpc/server": "^10.45.1",
+    "superjson": "^2.2.1",
+    "zod": "^3.22.4"
+  },
+  "devDependencies": {
+    "@orbitkit/tsconfig": "workspace:^",
+    "@types/node": "^20.11.16",
+    "eslint-config-orbitkit": "workspace:^"
+  },
+  "volta": {
+    "extends": "../../package.json"
+  }
+}

packages/trpc/src/index.ts

@@ -0,0 +1,10 @@
+import { greetingRouter } from './routers/greeting';
+import { router } from './trpc';
+
+export const appRouter = router({
+  greeting: greetingRouter,
+});
+
+export type AppRouter = typeof appRouter;
+
+export { createTRPCContext } from './trpc';

packages/trpc/src/routers/greeting.ts

@@ -0,0 +1,21 @@
+import { z } from 'zod';
+
+import { protectedProcedure, publicProcedure, router } from '../trpc';
+
+export const greetingRouter = router({
+  hello: publicProcedure
+    .input(z.object({ name: z.string().optional() }).optional())
+    .query(({ input }) => {
+      return {
+        greeting: `Hello, ${input?.name ?? 'World'}!`,
+      };
+    }),
+
+  protectedHello: protectedProcedure
+    .input(z.object({ name: z.string().optional() }).optional())
+    .query(({ input, ctx }) => {
+      return {
+        greeting: `Hello, ${input?.name ?? 'World'}! Your user ID is ${ctx.session.user.id}`,
+      };
+    }),
+});