Basic configuration for Apollo Server

example_apollo_server.js

const { ApolloServer } = require('apollo-server');

// Import of the file where we define/fetch data
const api = require('./server/api');

// Import of the file where we build data structures/schemas
const typeDefs = require('./server/schema');

// Bind queries from schemas definition to data from API's
const resolvers = {
  Query: {
    books: () => api.books,
    countries: () => api.countries
  },
};

// Build new server
const server = new ApolloServer({ typeDefs, resolvers });

// Start new server
server.listen().then(({ url }) => {
  console.log(`🚀  Server ready at ${url}`);
});