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backend/.gitignore

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+.DS_Store
+.env
+.env.local
+node_modules/
+*.db

backend/README.md

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+# backend
+
+# Setup
+
+Follow these steps to run [Elysia.js](https://elysiajs.com) under [Bun](https://bun.sh):
+
+1. Download packages
+   ```bash
+   bun install
+   ```
+2. You're ready to go!
+   ```bash
+   bun run main.ts
+   ```
+

backend/main.ts

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+import { Elysia } from "elysia";
+import cors from "@elysiajs/cors";
+
+const app = new Elysia().use(
+  cors({
+    origin: ["http://127.0.0.1:3000", "http://localhost:3000"],
+    credentials: true,
+  }),
+);
+
+app.get("/", () => ({
+  service: "landing-backend",
+  status: "ok",
+}));
+
+app.get("/health", () => ({
+  status: "ok",
+}));
+
+const port = Number(process.env.PORT ?? 4000);
+const hostname = process.env.HOST ?? "127.0.0.1";
+const server = app.listen({ port, hostname });
+
+console.log(`Backend listening on ${server.server!.url}`);

backend/package.json

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+{
+  "name": "backend",
+  "type": "module",
+  "scripts": {
+    "dev": "bun run main.ts",
+    "start": "bun run main.ts",
+    "typecheck": "tsc"
+  },
+  "packageManager": "bun@1.3.9",
+  "devDependencies": {
+    "@types/bun": "1",
+    "typescript": "5"
+  },
+  "dependencies": {
+    "@elysiajs/cors": "^1.2.1",
+    "elysia": "1"
+  }
+}

backend/tsconfig.json

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+{
+  "compilerOptions": {
+    "lib": [
+      "ESNext"
+    ],
+    "module": "ESNext",
+    "target": "ESNext",
+    "moduleResolution": "bundler",
+    "strict": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "resolveJsonModule": true,
+    "moduleDetection": "force",
+    "noUncheckedIndexedAccess": true,
+    "noEmit": true,
+    "types": [
+      "bun-types" // add Bun global
+    ]
+  }
+}