import { ApolloClient, InMemoryCache, HttpLink } from '@apollo/client';

const client = new ApolloClient({
  cache: new InMemoryCache(),
  link: new HttpLink({ uri: 'http://localhost:4000/graphql' }),
});

client.setResolvers({ ... });

import { createPersistedQueryLink } from "apollo-link-persisted-queries";
import { createHttpLink } from "apollo-link-http";
import { InMemoryCache } from "apollo-cache-inmemory";
import ApolloClient from "apollo-client";
 
 
// use this with Apollo Client
// use this with Apollo Client
const link = createPersistedQueryLink().concat(createHttpLink({ uri: "/graphql" }));
const client = new ApolloClient({
  cache: new InMemoryCache(),
  link: link,
});

import { ApolloClient, InMemoryCache } from '@apollo/client';
import { SchemaLink } from '@apollo/client/link/schema';

import schema from './path/to/your/schema';

const graphqlClient = new ApolloClient({
  cache: new InMemoryCache(),
  ssrMode: true,
  link: new SchemaLink({ schema })
});

import {
  ApolloClient,
  createHttpLink,
  InMemoryCache
} from '@apollo/client';

const client = new ApolloClient({
  ssrMode: true,
  link: createHttpLink({
    uri: 'http://localhost:3010',
    credentials: 'same-origin',
    headers: {
      cookie: req.header('Cookie'),
    },
  }),
  cache: new InMemoryCache(),
});

import { ApolloClient, InMemoryCache } from '@apollo/client'
import { SchemaLink } from '@apollo/client/link/schema';

// ...

const client = new ApolloClient({
  ssrMode: true,
  // Instead of "createHttpLink" use SchemaLink here
  link: new SchemaLink({ schema }),
  cache: new InMemoryCache(),
});