Restructuring the Project

Updating dependencies

Backend/src/api/middlewares/stacker.ts

@@ -0,0 +1,28 @@
+import { Request, Response, NextFunction, RequestHandler } from "express";
+import promiseMiddleware from "../../helper/promiseMiddleware";
+
+type RH = (req: Request, res: Response, next?: NextFunction) => any;
+
+function call(handler: RH, req: Request, res: Response) {
+   return new Promise<void>((yes, no) => {
+      let p = handler(req, res, (err) => {
+         if (err) no(err);
+         else yes();
+      });
+      if (p && p.catch) p.catch((err) => no(err));
+   });
+}
+
+const Stacker = (...handler: RH[]) => {
+   return promiseMiddleware(
+      async (req: Request, res: Response, next: NextFunction) => {
+         let hc = handler.concat();
+         while (hc.length > 0) {
+            let h = hc.shift();
+            await call(h, req, res);
+         }
+         next();
+      }
+   );
+};
+export default Stacker;