index.js

require('dotenv').config();
const express = require('express');
const { ApolloServer } = require('apollo-server-express');
const mongoose = require('mongoose');
const cors = require('cors');

const typeDefs = require('./src/schema');
const resolvers = require('./src/resolvers');

const startServer = async () => {
  const app = express();
  app.use(cors());

  const server = new ApolloServer({ typeDefs, resolvers });
  await server.start();
  server.applyMiddleware({ app, path: '/graphql' });

  const PORT = process.env.PORT || 4000;

  mongoose.connect(process.env.MONGO_URI)
    .then(() => {
      app.listen(PORT, () =>
        console.log(`Server ready at http://localhost:${PORT}${server.graphqlPath}`)
      );
    })
    .catch(err => console.error(err));
};

startServer();