diff --git a/package.json b/package.json
index 433cd8e102f72ec8a7df960cff07a988a630047e..2e2ef0fd416963d781354bf00b37ac33b3859b55 100644
--- a/package.json
+++ b/package.json
@@ -24,6 +24,9 @@
   "author": "",
   "license": "ISC",
   "imports": {
-    "#dongception": "./src/common/dongpring/dongception.js"
+    "#dongception": "./src/common/dongpring/dongception.js",
+    "#module/*": "./src/modules/*",
+    "#repository/*": "./src/repositories/*",
+    "#common/*": "./src/common/*"
   }
 }
diff --git a/src/modules/chat/chat.service.js b/src/modules/chat/chat.service.js
index 0990c0540cccee7f4ceb00bf0bda587077c4535d..a745e3172d38a141b1eaf2b925d2fc1263d073c6 100644
--- a/src/modules/chat/chat.service.js
+++ b/src/modules/chat/chat.service.js
@@ -146,6 +146,13 @@ class ChatService {
       return [];
     }
     response.nextId = response.messages[response.messages.length - 1].id;
+    response.messages.sort((a, b) => {
+      // 두 객체 모두에서 timestamp가 null이거나 undefined인 경우를 처리
+      if (!a.timestamp) return 1; // a가 null이거나 undefined면 b를 앞으로
+      if (!b.timestamp) return -1; // b가 null이거나 undefined면 a를 앞으로
+
+      return new Date(a.timestamp) - new Date(b.timestamp);
+    });
     return response;
   }
 }
diff --git a/src/modules/user/user.routes.js b/src/modules/user/user.routes.js
index 1fb6bf789bf4351355025b2d6537d4c39ad1cc81..73589673e011622dae8e133b1dfe0f0fdc47d901 100644
--- a/src/modules/user/user.routes.js
+++ b/src/modules/user/user.routes.js
@@ -1,51 +1,53 @@
 const express = require("express");
-const UserService = require("./user.service");
-const UserController = require("./user.controller");
-const UserRepository = require("../../repositories/user.repository");
-const db = require("../../common/database");
-const userRepository = new UserRepository(db);
-const userService = new UserService(userRepository);
-const userController = new UserController(userService);
-
-const AuthController = require("./../auth/auth.controller");
-const AuthService = require("./../auth/auth.service");
-const AuthRepository = require("./../../repositories/auth.repository");
-const jwtController = require("./../../common/jwt/jwt.controller");
-
-const authRepository = new AuthRepository(db);
-const authService = new AuthService(authRepository, jwtController);
-const authController = new AuthController(authService);
-
-const userRouter = express.Router();
-
-userRouter.get(
-  "/friends",
-  authController.checkUserSession,
-  userController.getFriendsList
-);
-userRouter.get(
-  "/profile",
-  authController.checkUserSession,
-  userController.getProfile
-);
-userRouter.post(
-  "/addFriend",
-  authController.checkUserSession,
-  userController.addFriend
-);
-userRouter.post(
-  "/updateProfile",
-  authController.checkUserSession,
-  userController.updateProfile
-);
-userRouter.get("/searchUser", userController.searchUser);
-userRouter.post("/addUser", userController.addUser);
-userRouter.post("/deleteUser/:userId", userController.deleteUser);
-userRouter.get("/findUser", userController.findUserByEmail);
-userRouter.get(
-  "/findAll",
-  authController.checkUserSession,
-  userController.findAllUser
-);
-
-module.exports = userRouter;
+
+class UserRouter {
+  constructor(authController, userController) {
+    this.authController = authController;
+    this.userController = userController;
+    this.router = express.Router();
+    this.initializeRoutes();
+  }
+
+  initializeRoutes() {
+    this.router.get(
+      "/friends",
+      this.authController.checkUserSession,
+      this.userController.getFriendsList
+    );
+
+    this.router.get(
+      "/profile",
+      this.authController.checkUserSession,
+      this.userController.getProfile
+    );
+
+    this.router.post(
+      "/addFriend",
+      this.authController.checkUserSession,
+      this.userController.addFriend
+    );
+
+    this.router.post(
+      "/updateProfile",
+      this.authController.checkUserSession,
+      this.userController.updateProfile
+    );
+
+    this.router.get("/searchUser", this.userController.searchUser);
+    this.router.post("/addUser", this.userController.addUser);
+    this.router.post("/deleteUser/:userId", this.userController.deleteUser);
+    this.router.get("/findUser", this.userController.findUserByEmail);
+
+    this.router.get(
+      "/findAll",
+      this.authController.checkUserSession,
+      this.userController.findAllUser
+    );
+  }
+
+  getRouter() {
+    return this.router;
+  }
+}
+
+module.exports = UserRouter;
diff --git a/src/route.js b/src/route.js
index 9c4c825538169b1b0ae0ed277e746a8d69d4252a..b7b7442ff026526b5e54211e306ea2398ad412ae 100644
--- a/src/route.js
+++ b/src/route.js
@@ -1,8 +1,27 @@
 const express = require("express");
-const authRouter = require("./modules/auth/auth.routes");
-const userRouter = require("./modules/user/user.routes");
-const chatRouter = require("./modules/chat/chat.routes");
 
+const UserService = require("#module/user/user.service.js");
+const UserController = require("#module/user/user.controller.js");
+const UserRepository = require("#repository/user.repository.js");
+const db = require("#common/database/index.js");
+const userRepository = new UserRepository(db);
+const userService = new UserService(userRepository);
+const userController = new UserController(userService);
+
+const AuthController = require("#module/auth/auth.controller.js");
+const AuthService = require("#module/auth/auth.service.js");
+const AuthRepository = require("#repository/auth.repository.js");
+const jwtController = require("#common/jwt/jwt.controller.js");
+
+const authRepository = new AuthRepository(db);
+const authService = new AuthService(authRepository, jwtController);
+const authController = new AuthController(authService);
+
+const authRouter = require("#module/auth/auth.routes.js");
+const UserRouter = require("#module/user/user.routes.js");
+const chatRouter = require("#module/chat/chat.routes.js");
+
+const userRouter = new UserRouter(authController, userController).getRouter();
 const router = express.Router();
 
 router.use("/auth", authRouter);