diff --git a/classes/Auth.js b/classes/Auth.js
index e69de29..4059425 100644
--- a/classes/Auth.js
+++ b/classes/Auth.js
@@ -0,0 +1,21 @@
+const Customer = require('./Customer');
+
+class Auth{
+    constructor(){
+        this.customers = [];
+    }
+
+    register(name, email, shippingAddress){
+        const customer = new Customer(name, email, shippingAddress);
+        this.customers.push(customer);
+    }
+
+    login(email){
+        
+        const customer = this.customers.find(customer => customer.email === email);
+        
+      return customer || null;
+    }
+}
+
+module.exports = Auth;
\ No newline at end of file
diff --git a/classes/Cart.js b/classes/Cart.js
index e69de29..73d724f 100644
--- a/classes/Cart.js
+++ b/classes/Cart.js
@@ -0,0 +1,22 @@
+class Cart{
+    constructor(){
+        this.products = [];
+        this.total = 0;
+    }
+
+    addProduct(product){
+        this.products.push(product);
+        this.total += product.price;
+        }
+    removeProduct(i){
+        
+        
+        this.total -= this.products[i].price;
+        this.products.splice(i,1);
+        
+        
+    }
+
+}
+
+module.exports = Cart;
\ No newline at end of file
diff --git a/classes/Customer.js b/classes/Customer.js
index e69de29..6dbed6d 100644
--- a/classes/Customer.js
+++ b/classes/Customer.js
@@ -0,0 +1,15 @@
+class Customer{
+    constructor(name, email, shippingAddress){
+        this.name = name;
+        this.email = email;
+        this.shippingAddress = shippingAddress;
+        this.orderHistory = [];
+    }
+
+    addToOrderHistory(cart){
+        this.orderHistory.push(cart);
+    }
+
+}
+
+module.exports = Customer;
\ No newline at end of file
diff --git a/classes/Product.js b/classes/Product.js
index e69de29..2a18b79 100644
--- a/classes/Product.js
+++ b/classes/Product.js
@@ -0,0 +1,14 @@
+class Product{
+    constructor(name, price, description){
+        this.name = name;
+        this.price = price;
+        this.description = description;
+        this.inStock = true;
+    }
+
+    display(){
+        return `Name: ${this.name}, Price: $${this.price}, Description: ${this.description}`;
+    }
+}
+
+module.exports = Product;
\ No newline at end of file
diff --git a/index.js b/index.js
index efad601..06a917e 100644
--- a/index.js
+++ b/index.js
@@ -1,6 +1,8 @@
 // Import Classes Here
-
-
+const Product = require('./classes/Product');
+const Cart = require('./classes/Cart');
+const Customer = require('./classes/Customer');
+const Auth = require('./classes/Auth');
 
 
 
diff --git a/package-lock.json b/package-lock.json
index 9b68881..5713249 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4717,7 +4717,8 @@
     "jest-pnp-resolver": {
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/jest-pnp-resolver/-/jest-pnp-resolver-1.2.3.tgz",
-      "integrity": "sha512-+3NpwQEnRoIBtx4fyhblQDPgJI0H1IEIkX7ShLUjPGA7TtUTvI1oiKi3SR4oBR0hQhQR80l4WAe5RrXBwWMA8w=="
+      "integrity": "sha512-+3NpwQEnRoIBtx4fyhblQDPgJI0H1IEIkX7ShLUjPGA7TtUTvI1oiKi3SR4oBR0hQhQR80l4WAe5RrXBwWMA8w==",
+      "requires": {}
     },
     "jest-regex-util": {
       "version": "29.4.3",