graphqlClient.js

import fetch from 'cross-fetch';
import { ApolloClient } from 'apollo-client';
import { createHttpLink } from 'apollo-link-http';
import { InMemoryCache } from 'apollo-cache-inmemory';
import FragmentMatcher from './FragmentMatcher';

const cache = new InMemoryCache({ fragmentMatcher: FragmentMatcher }).restore(window.__APOLLO_STATE__);

export function client(graphqlEnv) {
  return new ApolloClient({
    ssrForceFetchDelay: 100,
    cache,
    link: createHttpLink({
      uri: `https://cmsproxy${graphqlEnv}.publicradio.org/api/v1/graphql`,
      fetch: fetch
    }),
    cacheRedirects: {
      Query: {
        episode: (_, { id }, { getCacheKey }) => getCacheKey({ id, __typename: 'Episode' })
      }
    }
  });
}