Added designers

src/resolvers/products-resolver.ts

@@ -1,24 +1,33 @@
 // (parent, args, ctx, info)
 import { IResolverObject } from 'graphql-tools';
+import { OrderAPI } from '../datasources/order-api';
+import { ProductAPI } from '../datasources/product-api';
 
 const ProductBlacklist: IResolverObject = {
   async market(parent, args, { dataSources }) {
-    return dataSources.orderApi.getMarketById(parent.marketId);
+    return (<OrderAPI>dataSources.orderApi).getMarketById(parent.marketId);
   },
 };
 
 const Product: IResolverObject = {
   async categories({ id }, args, { dataSources }) {
-    return dataSources.productApi.getCategories(id);
+    return (<ProductAPI>dataSources.productApi).getCategories(id);
+  },
+  async designer({ designerId }, args, { dataSources }) {
+    return dataSources.designerApi.getDesignerById(designerId);
   },
 };
 
 async function getProducts(_, { limit, visible, browsable }, { dataSources }) {
-  return dataSources.productApi.getProducts(limit, visible, browsable);
+  return (<ProductAPI>dataSources.productApi).getProducts(
+    limit,
+    visible,
+    browsable,
+  );
 }
 
 async function getProduct(_, { id }, { dataSources }) {
-  return dataSources.productApi.getProduct(id);
+  return (<ProductAPI>dataSources.productApi).getProduct(id);
 }
 
 export const productTypeDefs = {