Apollo link

apolloClient.js

import { ApolloClient } from "apollo-client";
import link from "./apolloLink";

const client = new ApolloClient({
  link,
});

export default client;

apolloLink.js

import { ApolloLink } from "apollo-link";
import { onError } from "apollo-link-error";
import { HttpLink } from "apollo-link-http";
import fetch from "unfetch";

const errorLink = 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}`);
});

const link = ApolloLink.from([
  errorLink,
  new HttpLink({ uri: env.ENDPOINT_URL, fetch }),
]);

export default link;