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

​

// Initialize Apollo Client

const client = new ApolloClient({

  uri: 'http://localhost:4000/graphql',

  cache: new InMemoryCache()

});

​

// Define your query

const GET_USERS = gql`

  query GetUsers {

    users {

      id

      name

      email

    }

  }

`;

​

// Fetch data

client.query({

  query: GET_USERS

})

.then(result => console.log(result))

.catch(error => console.error(error));

const { ApolloServer, gql } = require("apollo-server");

​

//Define your GraphQL schema

const typeDefs = gql`

  type Book {

    title: String

    author: String

  }

  type Query {

    books: [Book]

  }

  // NOTE: please do not use any colon " : " or " , "

`;

​

  //Define your data set

const books = [

  {

    title: "The Awakening",

    author: "Kate Chopin",

  },

  {

    title: "City of Glass",

    author: "Paul Auster",

  },

];

​

//Define a resolver

const resolvers = {

  Query: {

    books: () => {

      return [books];

    },

  },

};

​

// Apollo Server

const server = new ApolloServer({

  typeDefs,

  resolvers,

});

​

server.listen().then(({ url }) => {

  console.log(`server ready at ${url}`);

});

​