migrate to typescript

src/middleware/cors.ts

@@ -0,0 +1,7 @@
+import {NextFunction, Request, Response} from 'express';
+
+export function corsMiddleware(req: Request, res: Response, next: NextFunction) {
+    res.header("Access-Control-Allow-Origin", "*");
+    res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
+    next();
+}