index.js

const express = require('express');
const graphqlHTTP = require('express-graphql');

const mongo = require('mongoose');
const app = express();

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

mongo.connect('mongodb://mongo:27017/example', {
    useNewUrlParser: true,
    useUnifiedTopology: true
})

mongo.connection.once('open', () => {
    console.log('connected to database');
})

app.use('/graphql', graphqlHTTP({
    graphiql: true,
    schema: schema
}));

app.listen(8080, () => {
    console.log('Server running succefully...')
})