diff --git a/gql commands b/gql commands
new file mode 100644
index 0000000..dbc6e56
--- /dev/null
+++ b/gql commands	
@@ -0,0 +1,60 @@
+ {
+  stores{
+    id,
+    name,
+    city,
+    number,
+    postalCode,
+    street,
+    products{description,name,price}
+  }
+}
+
+mutation{
+  createStore( 
+    	input:{ 
+        name: "asdf",
+        city: "asdf",
+        number:2,
+    		postalCode: "hallohallo",
+    		street: "asdf"
+    	}
+  	) {
+    id,
+    name,
+    city,
+    number,
+    postalCode,
+    street
+  }
+}
+
+query getStore($storeId: String!, $withProducts: Boolean!){
+  store (id:$storeId){
+    id,
+    name,
+    city,
+    number,
+    postalCode,
+    street,
+    products @include(if: $withProducts) {id,description,name,price}
+  }
+}
+var {"storeId": "5f2919aa-333a-4745-8166-3002ab30de0e","withProducts":true}
+
+mutation($productId:String!){
+  createReservation(
+    input:{
+      reservationProducts:
+      	[
+          {	
+            productId:$productId,
+            quantity:2
+          }
+        ]
+    }
+  ) {
+    id,date,reservationProducts{product{name,description,price},quantity}
+  }
+}
+var {"productId":"5bb3fbcc-7ec2-44fe-a04b-a0251cecf1e6"}
\ No newline at end of file
diff --git a/package.json b/package.json
index 5987d8a..4782824 100644
--- a/package.json
+++ b/package.json
@@ -1,21 +1,26 @@
 {
   "name": "food-graphql-server",
+  "type": "module",
   "version": "1.0.0",
   "description": "The GraphQL server to reserve food.",
   "main": "index.js",
   "scripts": {
-    "start": "nodemon src/index.js"
+    "start": "tsc-watch --onsuccess \"node ./src/index.js\""
   },
   "keywords": [],
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "apollo-server": "^2.3.1",
-    "graphql": "^14.1.1",
+    "apollo-server": "^2.19.2",
+    "class-validator": "^0.13.1",
+    "graphql": "^15.5.0",
+    "reflect-metadata": "^0.1.13",
+    "type-graphql": "^1.1.1",
+    "typescript": "^4.1.3",
     "uuid": "^3.3.2",
-    "yup": "^0.26.10"
+    "yup": "^0.32.8"
   },
   "devDependencies": {
-    "nodemon": "^1.18.9"
+    "tsc-watch": "^4.2.9"
   }
-}
+}
\ No newline at end of file
diff --git a/schema.gql b/schema.gql
new file mode 100644
index 0000000..fcf2815
--- /dev/null
+++ b/schema.gql
@@ -0,0 +1,70 @@
+# -----------------------------------------------
+# !!! THIS FILE WAS GENERATED BY TYPE-GRAPHQL !!!
+# !!!   DO NOT MODIFY THIS FILE BY YOURSELF   !!!
+# -----------------------------------------------
+
+"""
+The javascript `Date` as string. Type represents date and time as the ISO Date string.
+"""
+scalar DateTime
+
+type Mutation {
+  """Create a new reservation"""
+  createReservation(input: ReservationInput): Reservation
+
+  """Create a new store"""
+  createStore(input: StoreInput): Store
+}
+
+type Product {
+  description: String
+  id: String
+  name: String
+  price: Float
+}
+
+type Query {
+  """Get a specific store"""
+  store(id: String): Store
+
+  """Get all the stores"""
+  stores: [Store]
+}
+
+type Reservation {
+  date: DateTime
+  id: String
+  reservationProducts: [ReservationProduct]
+}
+
+input ReservationInput {
+  reservationProducts: [ReservationProductInput]
+}
+
+type ReservationProduct {
+  product: Product
+  quantity: Int
+}
+
+input ReservationProductInput {
+  productId: String
+  quantity: Int
+}
+
+type Store {
+  city: String
+  id: String
+  name: String
+  number: Int
+  postalCode: String
+  products: [Product]
+  street: String
+}
+
+input StoreInput {
+  city: String
+  name: String
+  number: Int
+  postalCode: String
+  street: String
+}
diff --git a/src/data.js b/src/data.js
index 221aaea..fa605a4 100644
--- a/src/data.js
+++ b/src/data.js
@@ -1,4 +1,4 @@
-const uuid = require('uuid');
+import uuid from 'uuid';
 
 const stores = [
   {
@@ -55,7 +55,8 @@ const reservations = [];
 
 let reservationProducts = [];
 
-function createStore({ city, name, number, postalCode, street }) {
+
+export function createStore({ city, name, number, postalCode, street }) {
   const newStore = {
     city,
     id: uuid(),
@@ -76,41 +77,38 @@ function getStores() {
   return stores;
 }
 
-function getStoreProducts(storeId) {
-  return products.filter((p) => p.storeId === storeId)
+export function getStore(storeId) {
+  return stores.find(store => store.id === storeId);
 }
 
-function getReservationProducts(reservationId) {
+export function getStoreProducts(storeId) {
+  return products.filter(prod => prod.storeId === storeId)
+}
+
+export function getReservationProducts(reservationId) {
   return reservationProducts
-    // Join
-    .filter((rp) => rp.reservationId === reservationId)
-    .map((rp) => ({
+    .filter(rp => rp.reservationId === reservationId)
+    .map(rp => ({
       product: products.find(p => p.id === rp.productId),
       quantity: rp.quantity
-    }));
+    })
+    );
 }
 
-function createReservation(reservation) {
+export function createReservation(reservation) {
+  //create new reservation and add it to db
   const reservationId = uuid();
   const newReservation = {
-    date: new Date(),
     id: reservationId,
+    date: new Date(),
   };
   reservations.push(newReservation);
+  //add the reservationID to the reservationproducts, then add them to the db
   reservationProducts = reservationProducts.concat(
-    reservation.reservationProducts.map((reservationProduct) => ({
-      ...reservationProduct,
+    reservation.reservationProducts.map(rp => ({
+      ...rp,
       reservationId
     })
-  ));
+    ));
   return newReservation;
 }
-
-module.exports = {
-  createStore,
-  createReservation,
-  getStore,
-  getStores,
-  getStoreProducts,
-  getReservationProducts
-};
\ No newline at end of file
diff --git a/src/index.js b/src/index.js
index f34c9a4..0541ef1 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,6 +1,10 @@
-const { ApolloServer, gql } = require('apollo-server');
-const resolvers = require('./resolvers');
-const typeDefs = require('./typeDefs');
+
+import "reflect-metadata";
+import { buildSchema } from "type-graphql";
+
+import * as path from "path";
+import { ApolloServer, gql } from "apollo-server";
+import { StoreResolver, ReservationResolver } from './resolvers.js';
 
 // ⚽️  Goal
 // --------
@@ -14,22 +18,26 @@ const typeDefs = require('./typeDefs');
 // 🏪  Exercise 4
 // --------------
 
-// Now we will focus on creating a reservation, which looks like this:
-// { id, date, reservationProducts: { product: { id, name price }, quantity })).
+// 1) First we create two files. One for our type definitions, `typeDefs.js`,
+//    and one for our resolver functions, `resolvers.js`.
+// 2) Create a GraphQL type definition for our store. A store has an id and a name.
+// 3) Create a Query `stores` to get a list of stores.
+// 4) Create a resolver function that returns the list of stores.
+// 5) Try out the GraphQL query in the GraphQL Playground (🚀 http://localhost:4000/)
 
-// 1) Create a Mutation to create a reservation `createReservation`
-//    that takes an object as input. The input type is named `ReservationInput`.
-//    ReservationInput contains a list of { productId, quantity } (input type is named `ReservationProductInput`),
-//    named `reservationProducts` (field of `ReservationInput`).
-// 2) Now create a resolver function for the mutation and insert it into our in-memory database.
-// 3) Create a query field reservationProducts under Reservation, to get the reservationProducts [{ product, quantity }].
-//    Similar as stores under Query.
-// 4) Go to the GraphQL Playground and try out the createReservation mutation!
+
+
+// create the schema using TypeGraphQL, pass the resolver
+const schema = await buildSchema({
+  resolvers: [StoreResolver, ReservationResolver],
+  nullableByDefault: true,
+  emitSchemaFile: path.resolve(".", "schema.gql"),
+});
 
 // In the most basic sense, the ApolloServer can be started
 // by passing type definitions (typeDefs) and the resolvers
 // responsible for fetching the data for those types.
-const server = new ApolloServer({ typeDefs, resolvers });
+const server = new ApolloServer({ schema });
 
 // This `listen` method launches a web-server. Existing apps
 // can utilize middleware options.
diff --git a/src/resolvers.js b/src/resolvers.js
index e4e0e3f..e2953e7 100644
--- a/src/resolvers.js
+++ b/src/resolvers.js
@@ -1,82 +1,134 @@
-const { UserInputError } = require('apollo-server');
-const yup = require('yup');
-const dateTimeScalar = require('./scalars/dateTime');
-const data = require('./data');
-
-const uuidSchema = yup.string().min(36).max(36);
-
+var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
+  var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
+  if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
+  else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
+  return c > 3 && r && Object.defineProperty(target, key, r), r;
+};
+var __metadata = (this && this.__metadata) || function (k, v) {
+  if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
+};
+var __param = (this && this.__param) || function (paramIndex, decorator) {
+  return function (target, key) { decorator(target, key, paramIndex); }
+};
+import "reflect-metadata";
+import { Resolver, Query, Mutation, Arg, FieldResolver, Root } from "type-graphql";
+import { Store, StoreInput, Product, Reservation, ReservationProduct, ReservationInput } from "./typeDefs.js";
+import { createStore, getStores, getStore, getStoreProducts, createReservation, getReservationProducts } from "./data.js";
+import * as yup from 'yup';
+import { UserInputError } from "apollo-server";
+// define input validations
 const createStoreSchema = yup.object()
   .shape({
-    city: yup.string().max(255),
-    name: yup.string().min(1).max(255).required(),
-    number: yup
-      .number()
-      .required()
-      .positive()
-      .integer(),
-    postalCode: yup.string().max(10),
-    street: yup.string().max(255),
+    city: yup.string().max(255).required(),
+    name: yup.string().max(255).required(),
+    number: yup.number().required().positive().integer(),
+    postalCode: yup.string().required().max(10),
+    street: yup.string().required().max(255),
   });
-
 const getStoreSchema = yup.object()
   .shape({
-    id: uuidSchema,
+    id: yup.string().length(36).required()
   });
-
 const createReservationSchema = yup.object()
   .shape({
-    reservationProducts: yup.array(
-      yup.object().shape({
-        productId: uuidSchema,
-        quantity: yup.number().required().positive().integer(),
-      })
-    ),
+    reservationProducts: yup.array(yup.object().shape({
+      productId: yup.string().length(36),
+      quantity: yup.number().required().positive().integer(),
+    })),
   });
-
-// Resolvers define the technique for fetching the types in the
-// schema.
-module.exports = {
-  Query: {
-    stores: () => data.getStores(),
-    store: async (parent, input) => {
-      try {
-        await getStoreSchema.validate(input);
-      } catch (e) {
-        throw new UserInputError('Invalid input.', { validationErrors: e.errors });
-      }
-      const { id } = input;
-      return data.getStore(id);
-    },
-  },
-  Reservation: {
-    reservationProducts: async ({ id }) => {
-      return data.getReservationProducts(id);
-    }
-  },
-  Store: {
-    products: async ({ id: storeId }) => {
-      return data.getStoreProducts(storeId);
-    }
-  },
-  Mutation: {
-    createStore: async (parent, { input }) => {
-      try {
-        await createStoreSchema.validate(input);
-      } catch (e) {
-        throw new UserInputError('Invalid input.', { validationErrors: e.errors });
-      }
-      const { city, name, number, postalCode, street } = input;
-      return data.createStore({ city, name, number, postalCode, street });
-    },
-    createReservation: async (parent, { input }) => {
-      try {
-        await createReservationSchema.validate(input);
-      } catch (e) {
-        throw new UserInputError('Invalid input.', { validationErrors: e.errors });
-      }
-      const { reservationProducts } = input;
-      return data.createReservation({ reservationProducts });
-    }
-  },
-  DateTime: dateTimeScalar,
-};
\ No newline at end of file
+let StoreResolver = class StoreResolver {
+  async stores() {
+    return await getStores();
+  }
+  async store(id /* ,@Arg("withProducts", { nullable: true }) withProducts: boolean*/) {
+    // check validity
+    return await getStoreSchema
+      .validate({ id: id })
+      .then(validData => {
+        return getStore(validData.id);
+      })
+      .catch(err => {
+        return new UserInputError('Invalid input', { validationErrors: err.errors });
+      });
+  }
+  //Extend the Store type with a list of its products.
+  async products(store) {
+    return await getStoreProducts(store.id);
+  }
+  async createStore(input) {
+    // check validity
+    return await createStoreSchema
+      .validate(input)
+      .then(validData => {
+        // put in db with data.js and return the value to grapqhl
+        return createStore(validData);
+      })
+      .catch(err => {
+        return new UserInputError('Invalid input', { validationErrors: err.errors });
+      });
+  }
+};
+__decorate([
+  Query(() => [Store], { description: "Get all the stores" }),
+  __metadata("design:type", Function),
+  __metadata("design:paramtypes", []),
+  __metadata("design:returntype", Promise)
+], StoreResolver.prototype, "stores", null);
+__decorate([
+  Query(() => Store, { description: "Get a specific store" }),
+  __param(0, Arg("id")),
+  __metadata("design:type", Function),
+  __metadata("design:paramtypes", [String /* ,@Arg("withProducts", { nullable: true }) withProducts: boolean*/]),
+  __metadata("design:returntype", Promise)
+], StoreResolver.prototype, "store", null);
+__decorate([
+  FieldResolver(() => [Product]),
+  __param(0, Root()),
+  __metadata("design:type", Function),
+  __metadata("design:paramtypes", [Store]),
+  __metadata("design:returntype", Promise)
+], StoreResolver.prototype, "products", null);
+__decorate([
+  Mutation(() => Store, { description: "Create a new store" }),
+  __param(0, Arg("input")),
+  __metadata("design:type", Function),
+  __metadata("design:paramtypes", [StoreInput]),
+  __metadata("design:returntype", Promise)
+], StoreResolver.prototype, "createStore", null);
+StoreResolver = __decorate([
+  Resolver(() => Store)
+], StoreResolver);
+export { StoreResolver };
+let ReservationResolver = class ReservationResolver {
+  async reservationProducts(reservation) {
+    return await getReservationProducts(reservation.id);
+  }
+  async createReservation(input) {
+    return await createReservationSchema
+      .validate(input)
+      .then(validData => {
+        return createReservation(validData);
+      })
+      .catch(err => {
+        return new UserInputError('Invalid input', { validationErrors: err.errors });
+      });
+  }
+};
+__decorate([
+  FieldResolver(() => [ReservationProduct]),
+  __param(0, Root()),
+  __metadata("design:type", Function),
+  __metadata("design:paramtypes", [Reservation]),
+  __metadata("design:returntype", Promise)
+], ReservationResolver.prototype, "reservationProducts", null);
+__decorate([
+  Mutation(() => Reservation, { description: "Create a new reservation" }),
+  __param(0, Arg("input")),
+  __metadata("design:type", Function),
+  __metadata("design:paramtypes", [ReservationInput]),
+  __metadata("design:returntype", Promise)
+], ReservationResolver.prototype, "createReservation", null);
+ReservationResolver = __decorate([
+  Resolver(() => Reservation)
+], ReservationResolver);
+export { ReservationResolver };
diff --git a/src/resolvers.ts b/src/resolvers.ts
new file mode 100644
index 0000000..31084ef
--- /dev/null
+++ b/src/resolvers.ts
@@ -0,0 +1,95 @@
+import "reflect-metadata";
+import { Resolver, Query, Mutation, Arg, FieldResolver, Root } from "type-graphql";
+import { Store, StoreInput, Product, Reservation, ReservationProduct, ReservationInput } from "./typeDefs.js";
+import { createStore, getStores, getStore, getStoreProducts, createReservation, getReservationProducts } from "./data.js";
+import * as yup from 'yup';
+import { UserInputError } from "apollo-server";
+
+// define input validations
+const createStoreSchema = yup.object()
+  .shape({
+    city: yup.string().max(255).required(),
+    name: yup.string().max(255).required(),
+    number: yup.number().required().positive().integer(),
+    postalCode: yup.string().required().max(10),
+    street: yup.string().required().max(255),
+  });
+
+const getStoreSchema = yup.object()
+  .shape({
+    id: yup.string().length(36).required()
+  });
+
+const createReservationSchema = yup.object()
+  .shape({
+    reservationProducts: yup.array(
+      yup.object().shape({
+        productId: yup.string().length(36),
+        quantity: yup.number().required().positive().integer(),
+      })
+    ),
+  });
+
+@Resolver(() => Store)
+export class StoreResolver {
+
+  @Query(() => [Store], { description: "Get all the stores" })
+  async stores(): Promise<Store[]> {
+    return await getStores();
+  }
+
+  @Query(() => Store, { description: "Get a specific store" })
+  async store(@Arg("id") id: String/* ,@Arg("withProducts", { nullable: true }) withProducts: boolean*/): Promise<Store> {
+    // check validity
+    return await getStoreSchema
+      .validate({ id: id })
+      .then(validData => {
+        return getStore(validData.id);
+      })
+      .catch(err => {
+        return new UserInputError('Invalid input', { validationErrors: err.errors });
+      });
+  }
+
+  //Extend the Store type with a list of its products.
+  @FieldResolver(() => [Product])
+  async products(@Root() store: Store): Promise<[Product]> {
+    return await getStoreProducts(store.id);
+  }
+
+
+
+  @Mutation(() => Store, { description: "Create a new store" })
+  async createStore(@Arg("input") input: StoreInput): Promise<Store | UserInputError> {
+    // check validity
+    return await createStoreSchema
+      .validate(input)
+      .then(validData => {
+        // put in db with data.js and return the value to grapqhl
+        return createStore(validData);
+      })
+      .catch(err => {
+        return new UserInputError('Invalid input', { validationErrors: err.errors });
+      });
+  }
+}
+@Resolver(() => Reservation)
+export class ReservationResolver {
+
+  @FieldResolver(() => [ReservationProduct])
+  async reservationProducts(@Root() reservation: Reservation) {
+    return await getReservationProducts(reservation.id);
+  }
+
+  @Mutation(() => Reservation, { description: "Create a new reservation" })
+  async createReservation(@Arg("input") input: ReservationInput): Promise<Reservation | UserInputError> {
+    return await createReservationSchema
+      .validate(input)
+      .then(validData => {
+        return createReservation(validData);
+      })
+      .catch(err => {
+        return new UserInputError('Invalid input', { validationErrors: err.errors });
+      })
+  }
+}
diff --git a/src/typeDefs.js b/src/typeDefs.js
index 2247f4b..36163dd 100644
--- a/src/typeDefs.js
+++ b/src/typeDefs.js
@@ -1,67 +1,151 @@
-const { gql } = require('apollo-server');
-
 // Type definitions define the "shape" of your data and specify
 // which ways the data can be fetched from the GraphQL server.
-module.exports = gql`
-  scalar DateTime
-
-  # Comments in GraphQL are defined with the hash (#) symbol.
-
-  type Product {
-    description: String
-    id: ID
-    name: String
-    price: Float
-  }
-
-  # This "Store" type can be used in other type declarations.
-  type Store {
-    city: String
-    id: ID
-    name: String
-    number: Int
-    postalCode: String
-    products: [Product]
-    street: String
-  }
-
-  type ReservationProduct {
-    product: Product
-    quantity: Int
-  }
-
-  type Reservation {
-    date: DateTime
-    id: ID
-    reservationProducts: [ReservationProduct]
-  }
-
-  # The "Query" type is the root of all GraphQL queries.
-  # (A "Mutation" type will be covered later on.)
-  type Query {
-    stores: [Store]
-    store(id: ID): Store
-  }
-
-  input StoreInput {
-    city: String
-    name: String!
-    number: Int
-    postalCode: String
-    street: String
-  }
-
-  input ReservationProductInput {
-    productId: ID
-    quantity: Int
-  }
-
-  input ReservationInput {
-    reservationProducts: [ReservationProductInput]
-  }
-
-  type Mutation {
-    createStore(input: StoreInput): Store
-    createReservation(input: ReservationInput): Reservation
-  }
-`;
\ No newline at end of file
+var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
+    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
+    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
+    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
+    return c > 3 && r && Object.defineProperty(target, key, r), r;
+};
+var __metadata = (this && this.__metadata) || function (k, v) {
+    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
+};
+import "reflect-metadata";
+import { ObjectType, Field, InputType, Int, Float } from "type-graphql";
+let Store = class Store {
+};
+__decorate([
+    Field(),
+    __metadata("design:type", String)
+], Store.prototype, "id", void 0);
+__decorate([
+    Field(),
+    __metadata("design:type", String)
+], Store.prototype, "name", void 0);
+__decorate([
+    Field(),
+    __metadata("design:type", String)
+], Store.prototype, "city", void 0);
+__decorate([
+    Field(type => Int),
+    __metadata("design:type", Number)
+], Store.prototype, "number", void 0);
+__decorate([
+    Field(),
+    __metadata("design:type", String)
+], Store.prototype, "postalCode", void 0);
+__decorate([
+    Field(),
+    __metadata("design:type", String)
+], Store.prototype, "street", void 0);
+__decorate([
+    Field(type => [Product]),
+    __metadata("design:type", Array)
+], Store.prototype, "products", void 0);
+Store = __decorate([
+    ObjectType()
+], Store);
+export { Store };
+let StoreInput = class StoreInput {
+};
+__decorate([
+    Field(),
+    __metadata("design:type", String)
+], StoreInput.prototype, "name", void 0);
+__decorate([
+    Field(),
+    __metadata("design:type", String)
+], StoreInput.prototype, "city", void 0);
+__decorate([
+    Field(type => Int),
+    __metadata("design:type", Number)
+], StoreInput.prototype, "number", void 0);
+__decorate([
+    Field(),
+    __metadata("design:type", String)
+], StoreInput.prototype, "postalCode", void 0);
+__decorate([
+    Field(),
+    __metadata("design:type", String)
+], StoreInput.prototype, "street", void 0);
+StoreInput = __decorate([
+    InputType()
+], StoreInput);
+export { StoreInput };
+let Product = class Product {
+};
+__decorate([
+    Field(),
+    __metadata("design:type", String)
+], Product.prototype, "id", void 0);
+__decorate([
+    Field(),
+    __metadata("design:type", String)
+], Product.prototype, "name", void 0);
+__decorate([
+    Field(),
+    __metadata("design:type", String)
+], Product.prototype, "description", void 0);
+__decorate([
+    Field(type => Float),
+    __metadata("design:type", Number)
+], Product.prototype, "price", void 0);
+Product = __decorate([
+    ObjectType()
+], Product);
+export { Product };
+let Reservation = class Reservation {
+};
+__decorate([
+    Field(),
+    __metadata("design:type", String)
+], Reservation.prototype, "id", void 0);
+__decorate([
+    Field(type => [ReservationProduct]),
+    __metadata("design:type", Array)
+], Reservation.prototype, "reservationProducts", void 0);
+__decorate([
+    Field(type => Date),
+    __metadata("design:type", Date)
+], Reservation.prototype, "date", void 0);
+Reservation = __decorate([
+    ObjectType()
+], Reservation);
+export { Reservation };
+let ReservationProduct = class ReservationProduct {
+};
+__decorate([
+    Field(type => Product),
+    __metadata("design:type", Product)
+], ReservationProduct.prototype, "product", void 0);
+__decorate([
+    Field(type => Int),
+    __metadata("design:type", Number)
+], ReservationProduct.prototype, "quantity", void 0);
+ReservationProduct = __decorate([
+    ObjectType()
+], ReservationProduct);
+export { ReservationProduct };
+let ReservationInput = class ReservationInput {
+};
+__decorate([
+    Field(type => [ReservationProductInput]),
+    __metadata("design:type", Array)
+], ReservationInput.prototype, "reservationProducts", void 0);
+ReservationInput = __decorate([
+    InputType()
+], ReservationInput);
+export { ReservationInput };
+let ReservationProductInput = class ReservationProductInput {
+};
+__decorate([
+    Field(),
+    __metadata("design:type", String)
+], ReservationProductInput.prototype, "productId", void 0);
+__decorate([
+    Field(type => Int),
+    __metadata("design:type", Number)
+], ReservationProductInput.prototype, "quantity", void 0);
+ReservationProductInput = __decorate([
+    InputType()
+], ReservationProductInput);
+export { ReservationProductInput };
diff --git a/src/typeDefs.ts b/src/typeDefs.ts
new file mode 100644
index 0000000..cc05f41
--- /dev/null
+++ b/src/typeDefs.ts
@@ -0,0 +1,82 @@
+// Type definitions define the "shape" of your data and specify
+// which ways the data can be fetched from the GraphQL server.
+
+import "reflect-metadata";
+import { ObjectType, Field, InputType, Int, Float } from "type-graphql";
+
+
+@ObjectType()
+export class Store {
+  @Field()
+  id: string;
+  @Field()
+  name: string;
+  @Field()
+  city: string;
+  @Field(type => Int)
+  number: number;
+  @Field()
+  postalCode: string
+  @Field()
+  street: string
+  @Field(type => [Product])
+  products?: [Product]
+}
+@InputType()
+export class StoreInput {
+  @Field()
+  name: string;
+  @Field()
+  city: string;
+  @Field(type => Int)
+  number: number;
+  @Field()
+  postalCode: string
+  @Field()
+  street: string
+}
+
+@ObjectType()
+export class Product {
+  @Field()
+  id: string;
+  @Field()
+  name: string;
+  @Field()
+  description: string;
+  @Field(type => Float)
+  price: number;
+}
+
+@ObjectType()
+export class Reservation {
+  @Field()
+  id: String;
+  @Field(type => [ReservationProduct])
+  reservationProducts: [ReservationProduct];
+  @Field(type => Date)
+  date: Date;
+}
+
+@ObjectType()
+export class ReservationProduct {
+  @Field(type => Product)
+  product: Product;
+  @Field(type => Int)
+  quantity: number;
+}
+
+
+@InputType()
+export class ReservationInput {
+  @Field(type => [ReservationProductInput])
+  reservationProducts: [ReservationProductInput];
+}
+
+@InputType()
+export class ReservationProductInput {
+  @Field()
+  productId: string;
+  @Field(type => Int)
+  quantity: number;
+}
\ No newline at end of file
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..80c8404
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,14 @@
+{
+  "compilerOptions": {
+    "target": "es2018",
+    "module": "esnext",
+    "lib": [
+      "es2018",
+      "esnext.asynciterable"
+    ],
+    "moduleResolution": "node",
+    "experimentalDecorators": true,
+    "emitDecoratorMetadata": true,
+    "allowSyntheticDefaultImports": true
+  }
+}
\ No newline at end of file