Step 7.1: Add Apollo client

package.json

@@ -19,6 +19,10 @@
     "@types/react-dom": "16.9.8",
     "@types/react-router-dom": "5.1.5",
     "@types/styled-components": "5.1.0",
+    "apollo-cache-inmemory": "1.6.6",
+    "apollo-client": "2.6.10",
+    "apollo-link": "1.2.14",
+    "apollo-link-http": "1.5.17",
     "history": "4.10.1",
     "jest-environment-jsdom-sixteen": "1.0.3",
     "jest-fetch-mock": "3.0.3",

src/client.ts

@@ -0,0 +1,16 @@
+import { InMemoryCache } from 'apollo-cache-inmemory';
+import { ApolloClient } from 'apollo-client';
+import { HttpLink } from 'apollo-link-http';
+
+const httpUri = process.env.REACT_APP_SERVER_URL + '/graphql';
+
+const httpLink = new HttpLink({
+  uri: httpUri,
+});
+
+const inMemoryCache = new InMemoryCache();
+
+export default new ApolloClient({
+  link: httpLink,
+  cache: inMemoryCache,
+});