index.js

 1import ApolloClient from 'apollo-boost'
 2import React from 'react'
 3import { ApolloProvider } from 'react-apollo'
 4import ReactDOM from 'react-dom'
 5import { BrowserRouter } from 'react-router-dom'
 6
 7import App from './App'
 8
 9const client = new ApolloClient({
10  uri: "/graphql",
11  connectToDevTools: true
12})
13
14ReactDOM.render(
15  <ApolloProvider client={client}>
16    <BrowserRouter>
17      <React.Fragment>
18        <App/>
19      </React.Fragment>
20    </BrowserRouter>
21  </ApolloProvider>,
22  document.getElementById('root')
23)