Execute GraphQL Query Inside of Endpoint

index.js

'use strict';

const express = require('express');
const bodyParser = require('body-parser');
const graphql = require('graphql');

const app = express();

app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());

app.get('/', function(req, res) {
    res.send('We\'re in business');
});

app.post('/api', function(req, res) {
    const schema = graphql.buildSchema(`
        type Query {
            hello: String
        }
    `);

    const root = {
        hello: () => {
            return 'Hello world!';
        },
    };

    graphql.graphql(schema, req.body.query, root).then((response) => {
        res.send(response);
    });
});

app.listen(8080, (app) => {
    console.log('App is listening');
});