update backend project

README.md

@@ -7,6 +7,7 @@
 ```
 cd backend
 npm install
+cp .env.example .env # edit the MONGO_DB_URL according to your database
 ```
 
 ### Start and auto-reload for development

backend/package.json

@@ -9,16 +9,16 @@
   },
   "dependencies": {
     "cors": "^2.8.5",
-    "dotenv-cli": "^4.0.0",
-    "express": "^4.17.1",
-    "mongoose": "^5.12.13",
+    "dotenv-cli": "^5.1.0",
+    "express": "^4.18.1",
+    "mongoose": "^6.3.5",
     "morgan": "^1.10.0"
   },
   "devDependencies": {
-    "eslint": "^7.28.0",
-    "eslint-config-prettier": "^8.3.0",
-    "eslint-plugin-prettier": "^3.4.0",
-    "nodemon": "^2.0.7",
-    "prettier": "^2.3.1"
+    "eslint": "^8.16.0",
+    "eslint-config-prettier": "^8.5.0",
+    "eslint-plugin-prettier": "^4.0.0",
+    "nodemon": "^2.0.16",
+    "prettier": "^2.6.2"
   }
 }

backend/server.js

@@ -7,11 +7,7 @@ const usersRouter = require("./routes/users");
 const routeNotFoundJsonHandler = require("./services/routeNotFoundJsonHandler");
 const jsonErrorHandler = require("./services/jsonErrorHandler");
 
-mongoose.connect(process.env.MONGO_DB_URL, {
-  useNewUrlParser: true,
-  useUnifiedTopology: true,
-  useCreateIndex: true,
-});
+mongoose.connect(process.env.MONGO_DB_URL);
 
 const app = express();