server.js

const bodyParser = require('body-parser');
const cors = require('cors');
const express = require('express');
const graphqlExpress = require('graphql-server-express').graphqlExpress;
const graphiqlExpress = require('graphql-server-express').graphiqlExpress;

const schema = require('./Schema').schema;

const GraphQLServer = express().use('*', cors());

// basic health route, ping /health to determine server health
GraphQLServer.get('/health', (req, res) => {
  res.sendStatus(200);
});

// graphiql explorer
// ping /graphiql for an in-browser GUI explorer
GraphQLServer.use('/graphiql', graphiqlExpress({
  endpointURL: '/graphql',
}));

// graphql endpoint
GraphQLServer.use(
  '/',
  bodyParser.json(),
  graphqlExpress({ schema })
);

GraphQLServer.listen(3000, () => {
  console.log(`GraphQL Server listening on port 3000`);
});