Introduce processor

src/server/api/reply.ts

@@ -0,0 +1,13 @@
+import * as express from 'express';
+
+export default (res: express.Response, x?: any, y?: any) => {
+	if (x === undefined) {
+		res.sendStatus(204);
+	} else if (typeof x === 'number') {
+		res.status(x).send({
+			error: x === 500 ? 'INTERNAL_ERROR' : y
+		});
+	} else {
+		res.send(x);
+	}
+};