create base project

.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
+
+#env
+.env

package.json

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+{
+  "name": "backend",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "dev": "nodemon server.js"
+
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "bcryptjs": "^2.4.3",
+    "body-parser": "^1.20.2",
+    "cookie-session": "^2.0.0",
+    "cors": "^2.8.5",
+    "dotenv": "^16.3.1",
+    "express": "^4.18.2",
+    "express-async-handler": "^1.2.0",
+    "express-session": "^1.17.3",
+    "jsonwebtoken": "^9.0.2",
+    "mongoose": "^7.5.1",
+    "nodemon": "^3.0.1",
+    "validator": "^13.11.0"
+  }
+}

server.js

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+const express = require("express");
+const app = express();
+const cors = require('cors');
+const dotenv = require("dotenv").config();
+const connectDb = require('./config/dbConnection');
+
+app.use(express.json());
+app.use(cors());
+
+
+app.listen(process.env.PORT, () => {
+    console.log(`server's running on port ${process.env.PORT}`);
+})
+
+connectDb();