diff --git a/node/express/getting-started/app.ts b/node/express/getting-started/app.ts
new file mode 100644
index 0000000..fbbd29d
--- /dev/null
+++ b/node/express/getting-started/app.ts
@@ -0,0 +1,26 @@
+import express, { Request, Response, NextFunction } from 'express';
+
+const app = express();
+const port = 3000;
+
+
+interface Product {
+    name: string;
+    price: number;
+    brand: string;
+  };
+
+const getProducts = (request: Request, response: Response, next: NextFunction) => {
+    let products: Product[] = [
+      {"name":"television", "price":112.34, "brand":"samsung"},
+      {"name":"washing machine", "price": 345.34, "brand": "LG"},
+      {"name":"Macbook", "price": 3454.34, "brand": "Apple"}
+    ]
+
+    response.status(200).json(products);
+}
+app.get('/products', getProducts);
+
+app.listen(port, () => {
+    console.log(`Server listening at port ${port}.`);
+  });
\ No newline at end of file
diff --git a/node/express/getting-started/errormiddleware.js b/node/express/getting-started/errormiddleware.js
index 9f2885f..9664ac6 100644
--- a/node/express/getting-started/errormiddleware.js
+++ b/node/express/getting-started/errormiddleware.js
@@ -1,17 +1,18 @@
 // errormiddleware.js
-const errorLogger = (err, req, res, next) => {
+const errorLogger = (err, request, response, next) => {
     console.log( `error ${err.message}`) 
     next(err) // calling next middleware
   }
   
-  const errorResponder = (err, req, res, next) => {
-    res.header("Content-Type", 'application/json')
+const errorResponder = (err, request, response, next) => {
+  response.header("Content-Type", 'application/json')
     
-    res.status(err.statusCode).send(err.message)
+  const status = err.status || 400
+  response.status(status).send(err.message)
   }
-  const invalidPathHandler = (req, res, next) => {
-    res.status(400)
-    res.send('invalid path')
+const invalidPathHandler = (request, response, next) => {
+  response.status(400)
+  response.send('invalid path')
   }
   
 module.exports = { errorLogger, errorResponder, invalidPathHandler }
diff --git a/node/express/getting-started/index.js b/node/express/getting-started/index.js
index e69e8fe..7fdb3bd 100644
--- a/node/express/getting-started/index.js
+++ b/node/express/getting-started/index.js
@@ -2,14 +2,14 @@ const express = require('express');
 
 const app = express();
 
-const requestLogger = (req, res, next) => {
-  console.log(req);
+const requestLogger = (request, response, next) => {
+  console.log(request);
   next();
 };
 
-const requireJsonContent = (req, res, next) => {
-  if (req.headers['content-type'] !== 'application/json') {
-      res.status(400).send('Server requires application/json')
+const requireJsonContent = (request, response, next) => {
+  if (request.headers['content-type'] !== 'application/json') {
+      response.status(400).send('Server requires application/json')
   } else {
     next()
   }
@@ -17,17 +17,9 @@ const requireJsonContent = (req, res, next) => {
 
 app.use(requestLogger);
 
-const myErrorHandler = (err, req, res, next) => {
-                            if (req.foo) {
-                              res.status(500).send('Fail!');
-                            }else {
-                              next(err);
-                            }
-                          };
 
-app.use(myErrorHandler);
-app.use((err, req, res, next) => {
-  res.status(500).send('Error!')
+app.use((err, request, response, next) => {
+  response.status(500).send('Error!')
 })
 
 // Set the body size limit to 100 bytes
@@ -41,18 +33,18 @@ let products = [{"name":"television", "price":112.34, "brand":"samsung"},
 
 
 // handle get request for path /
-app.get('/', (req, res) => {
-  res.send('response for GET request');
+app.get('/', (request, response) => {
+  response.send('response for GET request');
 });
 
 // handle get request for path /products
-app.get('/products', (req, res) => {
+app.get('/products', (request, response) => {
 
-  res.json(products);
+  response.json(products);
 });
 
 // handle get request for path /products
-app.get('/products/:brand', (req, res) => {
+app.get('/products/:brand', (request, response) => {
 
   const brand = req.params.brand;
 
@@ -60,11 +52,11 @@ app.get('/products/:brand', (req, res) => {
   
   const productsFiltered = products.filter(product=> product.brand == brand);                  
 
-  res.json(productsFiltered);
+  response.json(productsFiltered);
 });
 
 // handle post request for path /products
-app.post('/products', requireJsonContent, (req, res) => {
+app.post('/products', requireJsonContent, (request, response) => {
   const products = [];
 
   const name = req.body.name  ;                
@@ -76,31 +68,31 @@ app.post('/products', requireJsonContent, (req, res) => {
   products.push({name: req.body.name, brand: req.body.brand, price: req.body.price});               
  
   const productCreationResponse = {productID: "12345", result: "success"};
-  res.json(productCreationResponse);
+  response.json(productCreationResponse);
 });
 
 app.set('view engine', 'pug')
 app.set('views', './views')
-app.get('/home',  (req, res) => {
-  res.render("home", { title: "Home", message: "My home page" , sysdate: new Date().toLocaleString()})
+app.get('/home',  (request, response) => {
+  response.render("home", { title: "Home", message: "My home page" , sysdate: new Date().toLocaleString()})
 })
 
 
 // handle get request with 3 middleware functions
-app.get('/users', (req, res, next) => {
+app.get('/users', (request, response, next) => {
   console.log("Stage 1 processing ");
   next()
 },
-(req, res, next) => {
+(request, response, next) => {
   console.log("Stage 2 processing ");
   next();
 },
-(req, res) => {
-  res.send('response for GET request');
+(request, response) => {
+  response.send('response for GET request');
 });
 
 
-app.get('/products/error', (req, res) => {
+app.get('/products/error', (request, response) => {
   throw new Error("processing error!")
 });
 // start the server
diff --git a/node/express/getting-started/middleware.js b/node/express/getting-started/middleware.js
index c51b197..0c92e74 100644
--- a/node/express/getting-started/middleware.js
+++ b/node/express/getting-started/middleware.js
@@ -1,13 +1,13 @@
 // middleware.js
 
-const requestLogger = (req, res, next) => {
-    console.log(req);
+const requestLogger = (request, response, next) => {
+    console.log(request);
     next();
 };
   
-const requireJsonContent = (req, res, next) => {
-    if (req.headers['content-type'] !== 'application/json') {
-        res.status(400).send('Server requires application/json')
+const requireJsonContent = (request, response, next) => {
+    if (request.headers['content-type'] !== 'application/json') {
+        response.status(400).send('Server requires application/json')
     } else {
       next()
     }
diff --git a/node/express/getting-started/package.json b/node/express/getting-started/package.json
index 9ad7f4d..4fe54ed 100644
--- a/node/express/getting-started/package.json
+++ b/node/express/getting-started/package.json
@@ -4,7 +4,8 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "serve": "nodemon app.ts"
   },
   "keywords": [],
   "author": "",
@@ -12,5 +13,12 @@
   "dependencies": {
     "express": "^4.17.2",
     "pug": "^3.0.2"
+  },
+  "devDependencies": {
+    "@types/express": "^4.17.13",
+    "@types/node": "^17.0.17",
+    "nodemon": "^2.0.15",
+    "ts-node": "^10.5.0",
+    "typescript": "^4.5.5"
   }
 }
diff --git a/node/express/getting-started/routes.js b/node/express/getting-started/routes.js
index 89a5550..97a4463 100644
--- a/node/express/getting-started/routes.js
+++ b/node/express/getting-started/routes.js
@@ -12,59 +12,60 @@ let  products = [{"name":"television", "price":112.34, "brand":"samsung"},
 {"name":"Macbook", "price": 3454.34, "brand": "Apple"}];
 
 // handle get request for path /products
-router.get('/products', (req, res) => {
-  res.json(products);
+router.get('/products', (request, response) => {
+  console.log(products)
+  response.json(products)
 });
 
 // handle get request for path /products
-router.get('/products/:brand', (req, res) => {
+router.get('/products/:brand', (request, response) => {
 
-  const brand = req.params.brand;
+  const brand = request.params.brand;
 
   console.log(`brand ${brand} `);
   
   const productsFiltered = products.filter(product=> product.brand == brand);                  
 
-  res.json(productsFiltered);
+  response.json(productsFiltered);
 });
 
 
 // handle post request for path /products
-router.post('/products', requireJsonContent,(req, res) => {
+router.post('/products', requireJsonContent,(request, response) => {
 
-  const name = req.body.name  ;                
+  const name = request.body.name  ;                
 
-  const brand = req.body.brand;
+  const brand = request.body.brand;
 
   console.log(name + " " + brand);
   
-  products.push({name: req.body.name, brand: req.body.brand, price: req.body.price});               
+  products.push({name: request.body.name, brand: request.body.brand, price: request.body.price});               
  
   const productCreationResponse = {productID: "12345", result: "success"};
-  res.json(productCreationResponse);
+  response.json(productCreationResponse);
 });
 
 // handle put request for path /products
-router.put('/products', (req, res) => {
+router.put('/products', (request, response) => {
 
-  const name = req.body.name  ;                
+  const name = request.body.name  ;                
 
-  const brand = req.body.brand;
+  const brand = request.body.brand;
 
   console.log(name + " " + brand);
   
-  products.push({name: req.body.name, brand: req.body.brand, price: req.body.price});               
+  products.push({name: request.body.name, brand: request.body.brand, price: request.body.price});               
  
   const productCreationResponse = {productID: "12345", result: "success"};
-  res.json(productCreationResponse);
+  response.json(productCreationResponse);
 })
 
-router.get('/home',  (req, res) => {
+router.get('/home',  (request, response) => {
   console.log("rendering...")
-  res.render("home", { title: "Home", message: "My home page" , sysdate: new Date().toLocaleString()})
+  response.render("home", { title: "Home", message: "My home page" , sysdate: new Date().toLocaleString()})
 })
 
-router.get('/productswitherror', (req, res) => {
+router.get('/productswitherror', (request, response) => {
   let err = new Error("processing error ")
   err.statusCode = 400
   throw err
diff --git a/node/express/getting-started/tsconfig.json b/node/express/getting-started/tsconfig.json
new file mode 100644
index 0000000..3cc5f3e
--- /dev/null
+++ b/node/express/getting-started/tsconfig.json
@@ -0,0 +1,8 @@
+{
+    "compilerOptions": {
+      "module": "commonjs",
+      "target": "es6",
+      "rootDir": "./",
+      "esModuleInterop": true
+    }
+  }
\ No newline at end of file