feat: inisialisasi server Express dengan Node.js, TypeScript, dan middleware keamanan

src/app.ts

@@ -0,0 +1,35 @@
+import express, { Request, Response, NextFunction } from 'express';
+import cors from 'cors';
+import helmet from 'helmet';
+import morgan from 'morgan';
+import routes from './routes';
+import { errorHandler, CustomError } from './middleware/errorHandler';
+
+const app = express();
+
+app.use(helmet());
+app.use(cors());
+
+app.use(morgan('dev'));
+
+app.use(express.json());
+app.use(express.urlencoded({ extended: true }));
+
+app.get('/', (_req: Request, res: Response) => {
+	res.status(200).json({
+		message: 'Welcome to the Internify API',
+		documentation: 'Check /api/health untuk status',
+	});
+});
+
+app.use('/api', routes);
+
+app.use((req: Request, _res: Response, next: NextFunction) => {
+	const error: CustomError = new Error(`Not Found - ${req.originalUrl}`);
+	error.statusCode = 404;
+	next(error);
+});
+
+app.use(errorHandler);
+
+export default app;

src/index.ts

@@ -0,0 +1,31 @@
+import dotenv from 'dotenv';
+dotenv.config();
+
+import app from './app';
+
+const PORT = process.env.PORT || 5000;
+const NODE_ENV = process.env.NODE_ENV || 'development';
+
+const server = app.listen(PORT, () => {
+	console.log(`=========================================`);
+	console.log(`  Server jalanin di ${PORT}      `);
+	console.log(`  Environment: ${NODE_ENV}               `);
+	console.log(`  API base: http://localhost:${PORT}/api   `);
+	console.log(`=========================================`);
+});
+
+process.on('unhandledRejection', (err: Error) => {
+	console.error(`[Unhandled Rejection] Shutting down...`);
+	console.error(err.name, err.message);
+	server.close(() => {
+		process.exit(1);
+	});
+});
+
+process.on('uncaughtException', (err: Error) => {
+	console.error(`[Uncaught Exception] Shutting down...`);
+	console.error(err.name, err.message);
+	server.close(() => {
+		process.exit(1);
+	});
+});

src/middleware/errorHandler.ts

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+import { Request, Response, NextFunction } from 'express';
+
+export interface CustomError extends Error {
+	statusCode?: number;
+}
+
+export const errorHandler = (
+	err: CustomError,
+	_req: Request,
+	res: Response,
+	_next: NextFunction
+) => {
+	const statusCode = err.statusCode || 500;
+	const message = err.message || 'Internal Server Error';
+
+	console.error(`[Error] ${statusCode} - ${message}`);
+	if (err.stack) {
+		console.error(err.stack);
+	}
+
+	res.status(statusCode).json({
+		status: 'error',
+		statusCode,
+		message,
+		...(process.env.NODE_ENV === 'development' && { stack: err.stack }),
+	});
+};

src/routes/index.ts

@@ -0,0 +1,31 @@
+import { Router, Request, Response, NextFunction } from 'express';
+
+const router = Router();
+
+/**
+ * @route   GET /api/health
+ * @desc    Endpoint untuk memeriksa kesehatan/status server
+ * @access  Public
+ */
+router.get('/health', (_req: Request, res: Response) => {
+	res.status(200).json({
+		status: 'OK',
+		message: 'Server is running smoothly',
+		timestamp: new Date().toISOString(),
+	});
+});
+
+/**
+ * @route   GET /api/error-test
+ * @desc    Mensimulasikan error server internal untuk memverifikasi middleware penanganan error global
+ * @access  Public
+ */
+router.get('/error-test', (_req: Request, _res: Response, next: NextFunction) => {
+	try {
+		throw new Error('This is a test error to verify our custom global error handler!');
+	} catch (error) {
+		next(error);
+	}
+});
+
+export default router;