graphql_app_wrappers.js

// Context for React Apollo
const httpLinkReactApollo = createHttpLink({
  uri: 'http://localhost:4000'
});
const clientReactApollo = new ApolloClient({
  link: httpLinkReactApollo,
  cache: new InMemoryCache()
});

// Context for GraphQL Hooks
const clientGraphQLHooks = new GraphQLClient({
  url: 'http://localhost:4000',
  cache: memCache(),
});

ReactDOM.render(
  // Remove this wrap if you use GrapQL Hooks
  <ApolloProvider client={clientReactApollo}>
    {/* Remove this wrap if you use React Apollo */}
    <ClientContext.Provider value={clientGraphQLHooks}>
      <App />
    </ClientContext.Provider>
  </ApolloProvider>,
  document.getElementById('root')
)