server.js

import express from 'express';
import graphQLHTTP from 'express-graphql';
import path from 'path';
import bodyParser from 'body-parser';
// import morgan from 'morgan';

//database and schema
import { Schema } from './data/schema';
import db from './data';
import config from './config';

const GRAPHQL_PORT = config.port;

let graphQLServer;

if (graphQLServer) {
  graphQLServer.close();
}

const app = express();

app.use(bodyParser.json()) //parsing application/json
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.text({ type: 'application/graphql' }));

// app.use(morgan('combined'));

app.use('/graphql', graphQLHTTP({
  graphiql: true,
  pretty: true,
  schema: Schema,
  formatError: error => ({
    message: error.message,
  })
}));

app.get('*', (req, res) => {
  res.json({
    message: 'graphql server at /graphql endpoint',
  });
});

graphQLServer = app.listen(GRAPHQL_PORT, err => {
  if (err) {
    return err;
  }
  console.log(`GraphQL server running on http://localhost:${GRAPHQL_PORT}/graphql`)
})