u-fit/frontend/lib/withApollo.js

/**
 * Using next-with-apollo
 * https://github.com/lfades/next-with-apollo
 *
 * Changes:
 * * Reading endpoint and prodEndpoint from a config file
 * * Setting request to handle credentials.
 */

import withApollo from 'next-with-apollo'
import ApolloClient from 'apollo-client'
import { InMemoryCache } from 'apollo-cache-inmemory'
import { onError } from 'apollo-link-error'
import { ApolloLink } from 'apollo-link'

const cache = new InMemoryCache()

function createClient({ ctx, headers }) {
  return new ApolloClient({
    link: ApolloLink.from([
      onError(({ graphQLErrors, networkError }) => {
        if (graphQLErrors) {
          graphQLErrors.map(({ message, locations, path }) =>
            console.log(
              `[GraphQL error]: Message: ${message}, Location: ${locations}, Path: ${path}`
            )
          )
        }
        if (networkError) console.log(`[Network error]: ${networkError}`)
      })
    ]),
    fetchOptions: { mode: 'no-cors' },
    cache
  })
}

export default withApollo(createClient)