graph-ql-client

import { ApolloClient } from 'apollo-client';
import { HttpLink } from 'apollo-link-http';
import { ApolloLink, concat } from 'apollo-link';
const httpLink = new HttpLink({ uri: '/graphql' });
// registering middlewares [authMiddleware, otherMiddleware ]
const authMiddleware = new ApolloLink((operation, forward) => {
  // add the authorization to the headers
  operation.setContext({
    headers: {
      authorization: localStorage.getItem('token') || null,
    }
  });
  return forward(operation);
})

const otherMiddleware = new ApolloLink((operation, forward) => {
  // add the recent-activity custom header to the headers
  operation.setContext(({ headers = {} }) => ({
    headers: {
      ...headers,
      'recent-activity': localStorage.getItem('lastOnlineTime') || null,
    }
  }));
  return forward(operation);
})
const cache = new InMemoryCache();
const client = new ApolloClient({
  link: from([
    authMiddleware,
    otherMiddleware,
    httpLink
  ]),
  cache
});