refactor: add devMessage field (useful in front-end)

src/app.ts

@@ -20,6 +20,14 @@ const APP_PORT = +(process.env.APP_PORT || 3000);
 
   RegisterRoutes(app);
 
+  app.get("*", (_, res) =>
+    res.status(404).send({
+      status: 404,
+      message: "Route not found.",
+      devMessage: "unknown_url",
+    }),
+  );
+
   app.use(error);
 
   app.listen(APP_PORT, APP_HOST, () => console.log(`Listening on: http://localhost:${APP_PORT}`));

src/interfaces/http-error.ts

@@ -6,13 +6,15 @@ class HttpError extends Error {
    */
   status: HttpStatus;
   message: string;
+  devMessage?: string;
 
-  constructor(status: HttpStatus, message: string) {
+  constructor(status: HttpStatus, message: string, devMessage?: string) {
     super(message);
 
     this.name = "HttpError";
     this.status = status;
     this.message = message;
+    this.devMessage = devMessage;
   }
 }
 

src/middlewares/error.ts

@@ -8,6 +8,7 @@ function error(error: Error, _req: Request, res: Response, _next: NextFunction)
     return res.status(error.status).json({
       status: error.status,
       message: error.message,
+      devMessage: error.devMessage,
     });
   }
 
@@ -16,6 +17,7 @@ function error(error: Error, _req: Request, res: Response, _next: NextFunction)
       status: HttpStatus.UNPROCESSABLE_ENTITY,
       message: "Validation error(s).",
       detail: error.fields,
+      devMessage: "missing_or_invalid_parameter",
     });
   }
 
@@ -24,6 +26,7 @@ function error(error: Error, _req: Request, res: Response, _next: NextFunction)
   return res.status(HttpStatus.INTERNAL_SERVER_ERROR).json({
     status: HttpStatus.INTERNAL_SERVER_ERROR,
     message: error.message,
+    devMessage: "system_error",
   });
 }