Move error handler to middleware

src/middleware/error-handler.ts

@@ -0,0 +1,43 @@
+import { ErrorRequestHandler } from 'express';
+import { BaseException } from '../exceptions';
+import logger from '../logger';
+
+const errorHandler: ErrorRequestHandler = (err, req, res, next) => {
+	if (err instanceof BaseException) {
+		logger.debug(err);
+
+		res.status(err.status);
+
+		const payload: any = {
+			error: {
+				code: err.code,
+				message: err.message,
+			},
+		};
+
+		if (process.env.NODE_ENV === 'development') {
+			payload.error.stack = err.stack;
+		}
+
+		return res.json(payload);
+	} else {
+		logger.error(err);
+
+		res.status(500);
+
+		const payload: any = {
+			error: {
+				code: 'INTERNAL_SERVER_ERROR',
+				message: err.message,
+			},
+		};
+
+		if (process.env.NODE_ENV === 'development') {
+			payload.error.stack = err.stack;
+		}
+
+		return res.json(payload);
+	}
+};
+
+export default errorHandler;