initializeDB out of constructor

backend/src/index.ts

@@ -5,7 +5,15 @@ import linkRoutes from "./routes/linkRoutes";
 
 const app = new App([userRoutes, statusRoutes, linkRoutes]);
 
-app.listen();
+app
+  .initializeDB()
+  .then(() => {
+    app.listen();
+  })
+  .catch((error) => {
+    console.error("Failed to initialize the application:", error);
+    process.exit(1);
+  });
 
 // import express, { Request, Response } from "express";
 // import bodyParser from "body-parser";

backend/src/server.ts

@@ -19,7 +19,6 @@ class App {
     this.initializeMiddleware();
     this.initializePassport();
     this.initializeRoutes(routes);
-    this.initializeDB();
   }
   private initializeMiddleware(): void {
     this.app.use(cors());
@@ -48,7 +47,7 @@ class App {
     });
   }
 
-  private async initializeDB(): Promise<void> {
+  public async initializeDB(): Promise<void> {
     try {
       await connectToDB();
       console.log("Database connection successful");

resolver/src/app.ts

@@ -10,7 +10,6 @@ class App {
     this.express = express();
     this.middleware();
     this.initializeRouters(routers);
-    this.databaseConnection();
   }
 
   private middleware(): void {
@@ -24,7 +23,7 @@ class App {
     });
   }
 
-  private async databaseConnection(): Promise<void> {
+  public async initializeDB(): Promise<void> {
     try {
       await connectToDB();
     } catch (error) {

resolver/src/server.ts

@@ -3,4 +3,12 @@ import linkRoutes from "./routes/linkRoutes";
 
 const app = new App([linkRoutes]);
 
-app.listen();
+app
+  .initializeDB()
+  .then(() => {
+    app.listen();
+  })
+  .catch((error) => {
+    console.error("Failed to initialize the application:", error);
+    process.exit(1);
+  });