Let it rip

.env.example

@@ -0,0 +1,26 @@
+# Since the ".env" file is gitignored, you can use the ".env.example" file to
+# build a new ".env" file when you clone the repo. Keep this file up-to-date
+# when you add new variables to `.env`.
+
+# This file will be committed to version control, so make sure not to have any
+# secrets in it. If you are cloning this repo, create a copy of this file named
+# ".env" and populate it with your secrets.
+
+# When adding additional environment variables, the schema in "/src/env.mjs"
+# should be updated accordingly.
+
+# Drizzle
+# Get the Database URL from the "prisma" dropdown selector in PlanetScale. 
+# Change the query params at the end of the URL to "?ssl={"rejectUnauthorized":true}"
+DATABASE_URL='mysql://YOUR_MYSQL_URL_HERE?ssl={"rejectUnauthorized":true}'
+
+# Next Auth
+# You can generate a new secret on the command line with:
+# openssl rand -base64 32
+# https://next-auth.js.org/configuration/options#secret
+# NEXTAUTH_SECRET=""
+NEXTAUTH_URL="http://localhost:3000"
+
+# Next Auth Discord Provider
+DISCORD_CLIENT_ID=""
+DISCORD_CLIENT_SECRET=""

.eslintrc.cjs

@@ -0,0 +1,36 @@
+/** @type {import("eslint").Linter.Config} */
+const config = {
+  parser: "@typescript-eslint/parser",
+  parserOptions: {
+    project: true,
+  },
+  plugins: ["@typescript-eslint"],
+  extends: [
+    "next/core-web-vitals",
+    "plugin:@typescript-eslint/recommended-type-checked",
+    "plugin:@typescript-eslint/stylistic-type-checked",
+  ],
+  rules: {
+    // These opinionated rules are enabled in stylistic-type-checked above.
+    // Feel free to reconfigure them to your own preference.
+    "@typescript-eslint/array-type": "off",
+    "@typescript-eslint/consistent-type-definitions": "off",
+
+    "@typescript-eslint/consistent-type-imports": [
+      "warn",
+      {
+        prefer: "type-imports",
+        fixStyle: "inline-type-imports",
+      },
+    ],
+    "@typescript-eslint/no-unused-vars": ["warn", { argsIgnorePattern: "^_" }],
+    "@typescript-eslint/no-misused-promises": [
+      2,
+      {
+        checksVoidReturn: { attributes: false },
+      },
+    ],
+  },
+};
+
+module.exports = config;

.gitignore

@@ -0,0 +1,42 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# database
+/prisma/db.sqlite
+/prisma/db.sqlite-journal
+
+# next.js
+/.next/
+/out/
+next-env.d.ts
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.pnpm-debug.log*
+
+# local env files
+# do not commit any .env files to git, except for the .env.example file. https://create.t3.gg/en/usage/env-variables#using-environment-variables
+.env
+.env*.local
+
+# vercel
+.vercel
+
+# typescript
+*.tsbuildinfo

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+  "spellright.addToSystemDictionary": true
+}

README.md

@@ -0,0 +1,3 @@
+# Kan
+
+The open source Trello alternative.

drizzle.config.ts

@@ -0,0 +1,12 @@
+import { type Config } from "drizzle-kit";
+
+import { env } from "~/env.mjs";
+
+export default {
+  schema: "./src/server/db/schema.ts",
+  driver: "mysql2",
+  dbCredentials: {
+    connectionString: env.DATABASE_URL,
+  },
+  tablesFilter: ["kan_*"],
+} satisfies Config;

next.config.mjs

@@ -0,0 +1,10 @@
+/**
+ * Run `build` or `dev` with `SKIP_ENV_VALIDATION` to skip env validation. This is especially useful
+ * for Docker builds.
+ */
+await import("./src/env.mjs");
+
+/** @type {import("next").NextConfig} */
+const config = {};
+
+export default config;

package.json

@@ -0,0 +1,52 @@
+{
+  "name": "kan",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "build": "next build",
+    "db:push": "dotenv drizzle-kit push:mysql",
+    "db:studio": "dotenv drizzle-kit studio",
+    "dev": "next dev",
+    "lint": "next lint",
+    "start": "next start"
+  },
+  "dependencies": {
+    "@auth/drizzle-adapter": "^0.3.2",
+    "@planetscale/database": "^1.11.0",
+    "@t3-oss/env-nextjs": "^0.7.0",
+    "@tanstack/react-query": "^4.32.6",
+    "@trpc/client": "^10.37.1",
+    "@trpc/next": "^10.37.1",
+    "@trpc/react-query": "^10.37.1",
+    "@trpc/server": "^10.37.1",
+    "drizzle-orm": "^0.28.5",
+    "next": "^13.5.4",
+    "next-auth": "^4.23.0",
+    "react": "18.2.0",
+    "react-dom": "18.2.0",
+    "superjson": "^1.13.1",
+    "zod": "^3.22.4"
+  },
+  "devDependencies": {
+    "@types/eslint": "^8.44.2",
+    "@types/node": "^18.16.0",
+    "@types/react": "^18.2.20",
+    "@types/react-dom": "^18.2.7",
+    "@typescript-eslint/eslint-plugin": "^6.3.0",
+    "@typescript-eslint/parser": "^6.3.0",
+    "autoprefixer": "^10.4.14",
+    "dotenv-cli": "^7.3.0",
+    "drizzle-kit": "^0.19.13",
+    "eslint": "^8.47.0",
+    "eslint-config-next": "^13.5.4",
+    "mysql2": "^3.6.1",
+    "postcss": "^8.4.27",
+    "prettier": "^3.0.0",
+    "prettier-plugin-tailwindcss": "^0.5.1",
+    "tailwindcss": "^3.3.3",
+    "typescript": "^5.1.6"
+  },
+  "ct3aMetadata": {
+    "initVersion": "7.22.0"
+  }
+}

postcss.config.cjs

@@ -0,0 +1,8 @@
+const config = {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+};
+
+module.exports = config;

prettier.config.mjs

@@ -0,0 +1,6 @@
+/** @type {import('prettier').Config & import('prettier-plugin-tailwindcss').options} */
+const config = {
+  plugins: ["prettier-plugin-tailwindcss"],
+};
+
+export default config;

src/app/api/auth/[...nextauth]/route.ts

@@ -0,0 +1,11 @@
+import NextAuth from "next-auth";
+
+import { authOptions } from "~/server/auth";
+
+// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
+const handler = NextAuth(authOptions);
+export { handler as GET, handler as POST };
+
+export const runtime = "edge";
+export const preferredRegion = 'lhr1';
+export const dynamic = 'force-dynamic'

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

@@ -0,0 +1,28 @@
+import { fetchRequestHandler } from "@trpc/server/adapters/fetch";
+import { type NextRequest } from "next/server";
+
+import { env } from "~/env.mjs";
+import { appRouter } from "~/server/api/root";
+import { createTRPCContext } from "~/server/api/trpc";
+
+const handler = (req: NextRequest) =>
+  fetchRequestHandler({
+    endpoint: "/api/trpc",
+    req,
+    router: appRouter,
+    createContext: () => createTRPCContext({ req }),
+    onError:
+      env.NODE_ENV === "development"
+        ? ({ path, error }) => {
+            console.error(
+              `❌ tRPC failed on ${path ?? "<no-path>"}: ${error.message}`
+            );
+          }
+        : undefined,
+  });
+
+export { handler as GET, handler as POST };
+
+export const runtime = "edge";
+export const preferredRegion = 'lhr1';
+export const dynamic = 'force-dynamic'

src/app/layout.tsx

@@ -0,0 +1,31 @@
+import "~/styles/globals.css";
+
+import { Plus_Jakarta_Sans } from "next/font/google";
+import { headers } from "next/headers";
+
+import { TRPCReactProvider } from "~/trpc/react";
+
+const jakarta = Plus_Jakarta_Sans({
+  subsets: ["latin"],
+  variable: "--font-sans",
+});
+
+export const metadata = {
+  title: "Kan",
+  description: "The open source Trello alternative",
+  icons: [{ rel: "icon", url: "/favicon.ico" }],
+};
+
+export default function RootLayout({
+  children,
+}: {
+  children: React.ReactNode;
+}) {
+  return (
+    <html lang="en">
+      <body className={`font-sans ${jakarta.className}}`}>
+        <TRPCReactProvider headers={headers()}>{children}</TRPCReactProvider>
+      </body>
+    </html>
+  );
+}

src/app/page.tsx

@@ -0,0 +1,7 @@
+export default function Home() {
+  return (
+    <main>
+      <h1>Kan</h1>
+    </main>
+  );
+}

src/env.mjs

@@ -0,0 +1,62 @@
+import { createEnv } from "@t3-oss/env-nextjs";
+import { z } from "zod";
+
+export const env = createEnv({
+  /**
+   * Specify your server-side environment variables schema here. This way you can ensure the app
+   * isn't built with invalid env vars.
+   */
+  server: {
+    DATABASE_URL: z
+      .string()
+      .url()
+      .refine(
+        (str) => !str.includes("YOUR_MYSQL_URL_HERE"),
+        "You forgot to change the default URL",
+      ),
+    NODE_ENV: z
+      .enum(["development", "test", "production"])
+      .default("development"),
+    NEXTAUTH_SECRET:
+      process.env.NODE_ENV === "production"
+        ? z.string()
+        : z.string().optional(),
+    NEXTAUTH_URL: z.preprocess(
+      // This makes Vercel deployments not fail if you don't set NEXTAUTH_URL
+      // Since NextAuth.js automatically uses the VERCEL_URL if present.
+      (str) => process.env.VERCEL_URL ?? str,
+      // VERCEL_URL doesn't include `https` so it cant be validated as a URL
+      process.env.VERCEL ? z.string() : z.string().url(),
+    ),
+  },
+
+  /**
+   * Specify your client-side environment variables schema here. This way you can ensure the app
+   * isn't built with invalid env vars. To expose them to the client, prefix them with
+   * `NEXT_PUBLIC_`.
+   */
+  client: {
+    // NEXT_PUBLIC_CLIENTVAR: z.string(),
+  },
+
+  /**
+   * You can't destruct `process.env` as a regular object in the Next.js edge runtimes (e.g.
+   * middlewares) or client-side so we need to destruct manually.
+   */
+  runtimeEnv: {
+    DATABASE_URL: process.env.DATABASE_URL,
+    NODE_ENV: process.env.NODE_ENV,
+    NEXTAUTH_SECRET: process.env.NEXTAUTH_SECRET,
+    NEXTAUTH_URL: process.env.NEXTAUTH_URL,
+  },
+  /**
+   * Run `build` or `dev` with `SKIP_ENV_VALIDATION` to skip env validation. This is especially
+   * useful for Docker builds.
+   */
+  skipValidation: !!process.env.SKIP_ENV_VALIDATION,
+  /**
+   * Makes it so that empty strings are treated as undefined.
+   * `SOME_VAR: z.string()` and `SOME_VAR=''` will throw an error.
+   */
+  emptyStringAsUndefined: true,
+});

src/server/api/root.ts

@@ -0,0 +1,14 @@
+import { boardRouter } from "~/server/api/routers/board";
+import { createTRPCRouter } from "~/server/api/trpc";
+
+/**
+ * This is the primary router for your server.
+ *
+ * All routers added in /api/routers should be manually added here.
+ */
+export const appRouter = createTRPCRouter({
+  board: boardRouter,
+});
+
+// export type definition of API
+export type AppRouter = typeof appRouter;

src/server/api/routers/board.ts

@@ -0,0 +1,14 @@
+import {
+  createTRPCRouter,
+  publicProcedure,
+} from "~/server/api/trpc";
+
+export const boardRouter = createTRPCRouter({
+  all: publicProcedure.query(({ ctx }) => {
+    const userId = ctx.session?.user.id;
+
+    if (!userId) return;
+
+    return ctx.db.query.boards.findMany();
+  })
+});

src/server/api/trpc.ts

@@ -0,0 +1,130 @@
+/**
+ * YOU PROBABLY DON'T NEED TO EDIT THIS FILE, UNLESS:
+ * 1. You want to modify request context (see Part 1).
+ * 2. You want to create a new middleware or type of procedure (see Part 3).
+ *
+ * TL;DR - This is where all the tRPC server stuff is created and plugged in. The pieces you will
+ * need to use are documented accordingly near the end.
+ */
+
+import { initTRPC, TRPCError } from "@trpc/server";
+import { type NextRequest } from "next/server";
+import superjson from "superjson";
+import { ZodError } from "zod";
+
+import { getServerAuthSession } from "~/server/auth";
+import { db } from "~/server/db";
+
+/**
+ * 1. CONTEXT
+ *
+ * This section defines the "contexts" that are available in the backend API.
+ *
+ * These allow you to access things when processing a request, like the database, the session, etc.
+ */
+
+interface CreateContextOptions {
+  headers: Headers;
+}
+
+/**
+ * This helper generates the "internals" for a tRPC context. If you need to use it, you can export
+ * it from here.
+ *
+ * Examples of things you may need it for:
+ * - testing, so we don't have to mock Next.js' req/res
+ * - tRPC's `createSSGHelpers`, where we don't have req/res
+ *
+ * @see https://create.t3.gg/en/usage/trpc#-serverapitrpcts
+ */
+export const createInnerTRPCContext = async (opts: CreateContextOptions) => {
+  const session = await getServerAuthSession();
+
+  return {
+    session,
+    headers: opts.headers,
+    db,
+  };
+};
+
+/**
+ * This is the actual context you will use in your router. It will be used to process every request
+ * that goes through your tRPC endpoint.
+ *
+ * @see https://trpc.io/docs/context
+ */
+export const createTRPCContext = async (opts: { req: NextRequest }) => {
+  // Fetch stuff that depends on the request
+
+  return await createInnerTRPCContext({
+    headers: opts.req.headers,
+  });
+};
+
+/**
+ * 2. INITIALIZATION
+ *
+ * This is where the tRPC API is initialized, connecting the context and transformer. We also parse
+ * ZodErrors so that you get typesafety on the frontend if your procedure fails due to validation
+ * errors on the backend.
+ */
+
+const t = initTRPC.context<typeof createTRPCContext>().create({
+  transformer: superjson,
+  errorFormatter({ shape, error }) {
+    return {
+      ...shape,
+      data: {
+        ...shape.data,
+        zodError:
+          error.cause instanceof ZodError ? error.cause.flatten() : null,
+      },
+    };
+  },
+});
+
+/**
+ * 3. ROUTER & PROCEDURE (THE IMPORTANT BIT)
+ *
+ * These are the pieces you use to build your tRPC API. You should import these a lot in the
+ * "/src/server/api/routers" directory.
+ */
+
+/**
+ * This is how you create new routers and sub-routers in your tRPC API.
+ *
+ * @see https://trpc.io/docs/router
+ */
+export const createTRPCRouter = t.router;
+
+/**
+ * Public (unauthenticated) procedure
+ *
+ * This is the base piece you use to build new queries and mutations on your tRPC API. It does not
+ * guarantee that a user querying is authorized, but you can still access user session data if they
+ * are logged in.
+ */
+export const publicProcedure = t.procedure;
+
+/** Reusable middleware that enforces users are logged in before running the procedure. */
+const enforceUserIsAuthed = t.middleware(({ ctx, next }) => {
+  if (!ctx.session || !ctx.session.user) {
+    throw new TRPCError({ code: "UNAUTHORIZED" });
+  }
+  return next({
+    ctx: {
+      // infers the `session` as non-nullable
+      session: { ...ctx.session, user: ctx.session.user },
+    },
+  });
+});
+
+/**
+ * Protected (authenticated) procedure
+ *
+ * If you want a query or mutation to ONLY be accessible to logged in users, use this. It verifies
+ * the session is valid and guarantees `ctx.session.user` is not null.
+ *
+ * @see https://trpc.io/docs/procedures
+ */
+export const protectedProcedure = t.procedure.use(enforceUserIsAuthed);

src/server/auth.ts

@@ -0,0 +1,68 @@
+import { DrizzleAdapter } from "@auth/drizzle-adapter";
+import {
+  getServerSession,
+  type DefaultSession,
+  type NextAuthOptions,
+} from "next-auth";
+import DiscordProvider from "next-auth/providers/discord";
+
+import { env } from "~/env.mjs";
+import { db } from "~/server/db";
+import { mysqlTable } from "~/server/db/schema";
+
+/**
+ * Module augmentation for `next-auth` types. Allows us to add custom properties to the `session`
+ * object and keep type safety.
+ *
+ * @see https://next-auth.js.org/getting-started/typescript#module-augmentation
+ */
+declare module "next-auth" {
+  interface Session extends DefaultSession {
+    user: {
+      id: string;
+      // ...other properties
+      // role: UserRole;
+    } & DefaultSession["user"];
+  }
+
+  // interface User {
+  //   // ...other properties
+  //   // role: UserRole;
+  // }
+}
+
+/**
+ * Options for NextAuth.js used to configure adapters, providers, callbacks, etc.
+ *
+ * @see https://next-auth.js.org/configuration/options
+ */
+export const authOptions: NextAuthOptions = {
+  callbacks: {
+    session: ({ session, user }) => ({
+      ...session,
+      user: {
+        ...session.user,
+        id: user.id,
+      },
+    }),
+  },
+  adapter: DrizzleAdapter(db, mysqlTable),
+  providers: [
+    /**
+     * ...add more providers here.
+     *
+     * Most other providers require a bit more work than the Discord provider. For example, the
+     * GitHub provider requires you to add the `refresh_token_expires_in` field to the Account
+     * model. Refer to the NextAuth.js docs for the provider you want to use. Example:
+     *
+     * @see https://next-auth.js.org/providers/github
+     */
+  ],
+};
+
+/**
+ * Wrapper for `getServerSession` so that you don't need to import the `authOptions` in every file.
+ *
+ * @see https://next-auth.js.org/configuration/nextjs
+ */
+export const getServerAuthSession = () => getServerSession(authOptions);

src/server/db/index.ts

@@ -0,0 +1,12 @@
+import { Client } from "@planetscale/database";
+import { drizzle } from "drizzle-orm/planetscale-serverless";
+
+import { env } from "~/env.mjs";
+import * as schema from "./schema";
+
+export const db = drizzle(
+  new Client({
+    url: env.DATABASE_URL,
+  }).connection(),
+  { schema }
+);

src/server/db/schema.ts

@@ -0,0 +1,105 @@
+import { relations, sql } from "drizzle-orm";
+import {
+  bigint,
+  index,
+  int,
+  mysqlTableCreator,
+  primaryKey,
+  text,
+  timestamp,
+  varchar,
+} from "drizzle-orm/mysql-core";
+import { type AdapterAccount } from "next-auth/adapters";
+
+/**
+ * This is an example of how to use the multi-project schema feature of Drizzle ORM. Use the same
+ * database instance for multiple projects.
+ *
+ * @see https://orm.drizzle.team/docs/goodies#multi-project-schema
+ */
+export const mysqlTable = mysqlTableCreator((name) => `kan_${name}`);
+
+export const boards = mysqlTable(
+  "board",
+  {
+    id: bigint("id", { mode: "number" }).primaryKey().autoincrement(),
+    name: varchar("name", { length: 255 }),
+    createdBy: varchar("createdBy", { length: 255 }).notNull(),
+    createdAt: timestamp("created_at")
+      .default(sql`CURRENT_TIMESTAMP`)
+      .notNull(),
+    updatedAt: timestamp("updatedAt").onUpdateNow(),
+  },
+);
+
+export const users = mysqlTable("user", {
+  id: varchar("id", { length: 255 }).notNull().primaryKey(),
+  name: varchar("name", { length: 255 }),
+  email: varchar("email", { length: 255 }).notNull(),
+  emailVerified: timestamp("emailVerified", {
+    mode: "date",
+    fsp: 3,
+  }).default(sql`CURRENT_TIMESTAMP(3)`),
+  image: varchar("image", { length: 255 }),
+});
+
+export const usersRelations = relations(users, ({ many }) => ({
+  accounts: many(accounts),
+}));
+
+export const accounts = mysqlTable(
+  "account",
+  {
+    userId: varchar("userId", { length: 255 }).notNull(),
+    type: varchar("type", { length: 255 })
+      .$type<AdapterAccount["type"]>()
+      .notNull(),
+    provider: varchar("provider", { length: 255 }).notNull(),
+    providerAccountId: varchar("providerAccountId", { length: 255 }).notNull(),
+    refresh_token: text("refresh_token"),
+    access_token: text("access_token"),
+    expires_at: int("expires_at"),
+    token_type: varchar("token_type", { length: 255 }),
+    scope: varchar("scope", { length: 255 }),
+    id_token: text("id_token"),
+    session_state: varchar("session_state", { length: 255 }),
+  },
+  (account) => ({
+    compoundKey: primaryKey(account.provider, account.providerAccountId),
+    userIdIdx: index("userId_idx").on(account.userId),
+  })
+);
+
+export const accountsRelations = relations(accounts, ({ one }) => ({
+  user: one(users, { fields: [accounts.userId], references: [users.id] }),
+}));
+
+export const sessions = mysqlTable(
+  "session",
+  {
+    sessionToken: varchar("sessionToken", { length: 255 })
+      .notNull()
+      .primaryKey(),
+    userId: varchar("userId", { length: 255 }).notNull(),
+    expires: timestamp("expires", { mode: "date" }).notNull(),
+  },
+  (session) => ({
+    userIdIdx: index("userId_idx").on(session.userId),
+  })
+);
+
+export const sessionsRelations = relations(sessions, ({ one }) => ({
+  user: one(users, { fields: [sessions.userId], references: [users.id] }),
+}));
+
+export const verificationTokens = mysqlTable(
+  "verificationToken",
+  {
+    identifier: varchar("identifier", { length: 255 }).notNull(),
+    token: varchar("token", { length: 255 }).notNull(),
+    expires: timestamp("expires", { mode: "date" }).notNull(),
+  },
+  (vt) => ({
+    compoundKey: primaryKey(vt.identifier, vt.token),
+  })
+);

src/styles/globals.css

@@ -0,0 +1,3 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;

src/trpc/react.tsx

@@ -0,0 +1,47 @@
+"use client";
+
+import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+import { loggerLink, unstable_httpBatchStreamLink } from "@trpc/client";
+import { createTRPCReact } from "@trpc/react-query";
+import { useState } from "react";
+
+import { type AppRouter } from "~/server/api/root";
+import { getUrl, transformer } from "./shared";
+
+export const api = createTRPCReact<AppRouter>();
+
+export function TRPCReactProvider(props: {
+  children: React.ReactNode;
+  headers: Headers;
+}) {
+  const [queryClient] = useState(() => new QueryClient());
+
+  const [trpcClient] = useState(() =>
+    api.createClient({
+      transformer,
+      links: [
+        loggerLink({
+          enabled: (op) =>
+            process.env.NODE_ENV === "development" ||
+            (op.direction === "down" && op.result instanceof Error),
+        }),
+        unstable_httpBatchStreamLink({
+          url: getUrl(),
+          headers() {
+            const heads = new Map(props.headers);
+            heads.set("x-trpc-source", "react");
+            return Object.fromEntries(heads);
+          },
+        }),
+      ],
+    })
+  );
+
+  return (
+    <QueryClientProvider client={queryClient}>
+      <api.Provider client={trpcClient} queryClient={queryClient}>
+        {props.children}
+      </api.Provider>
+    </QueryClientProvider>
+  );
+}

src/trpc/server.ts

@@ -0,0 +1,28 @@
+import {
+  createTRPCProxyClient,
+  loggerLink,
+  unstable_httpBatchStreamLink,
+} from "@trpc/client";
+import { headers } from "next/headers";
+
+import { type AppRouter } from "~/server/api/root";
+import { getUrl, transformer } from "./shared";
+
+export const api = createTRPCProxyClient<AppRouter>({
+  transformer,
+  links: [
+    loggerLink({
+      enabled: (op) =>
+        process.env.NODE_ENV === "development" ||
+        (op.direction === "down" && op.result instanceof Error),
+    }),
+    unstable_httpBatchStreamLink({
+      url: getUrl(),
+      headers() {
+        const heads = new Map(headers());
+        heads.set("x-trpc-source", "rsc");
+        return Object.fromEntries(heads);
+      },
+    }),
+  ],
+});

src/trpc/shared.ts

@@ -0,0 +1,30 @@
+import { type inferRouterInputs, type inferRouterOutputs } from "@trpc/server";
+import superjson from "superjson";
+
+import { type AppRouter } from "~/server/api/root";
+
+export const transformer = superjson;
+
+function getBaseUrl() {
+  if (typeof window !== "undefined") return "";
+  if (process.env.VERCEL_URL) return `https://${process.env.VERCEL_URL}`;
+  return `http://localhost:${process.env.PORT ?? 3000}`;
+}
+
+export function getUrl() {
+  return getBaseUrl() + "/api/trpc";
+}
+
+/**
+ * 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>;

tailwind.config.ts

@@ -0,0 +1,14 @@
+import { type Config } from "tailwindcss";
+import { fontFamily } from "tailwindcss/defaultTheme";
+
+export default {
+  content: ["./src/**/*.tsx"],
+  theme: {
+    extend: {
+      fontFamily: {
+        sans: ["var(--font-sans)", ...fontFamily.sans],
+      },
+    },
+  },
+  plugins: [],
+} satisfies Config;

tsconfig.json

@@ -0,0 +1,35 @@
+{
+  "compilerOptions": {
+    "target": "es2017",
+    "lib": ["dom", "dom.iterable", "esnext"],
+    "allowJs": true,
+    "checkJs": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "noEmit": true,
+    "esModuleInterop": true,
+    "module": "esnext",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "jsx": "preserve",
+    "incremental": true,
+    "noUncheckedIndexedAccess": true,
+    "baseUrl": ".",
+    "paths": {
+      "~/*": ["./src/*"]
+    },
+    "plugins": [{ "name": "next" }]
+  },
+  "include": [
+    ".eslintrc.cjs",
+    "next-env.d.ts",
+    "**/*.ts",
+    "**/*.tsx",
+    "**/*.cjs",
+    "**/*.mjs",
+    ".next/types/**/*.ts"
+  ],
+  "exclude": ["node_modules"]
+}