conf.js

const mysql = require('mysql');

const connection = mysql.createConnection({
    host: 'localhost',
    user: 'root',
    password: process.env['SQLPASSWORD'],
    database: 'my_db',
})
module.exports = connection;

index.js

const express = require('express');
const app = express();
const connection = require('./conf');

app.get('/api/movies', (req, res) => { 
    connection.query('SELECT * from movie', (err, results) => {
        if (err) {
            res.status(500).send(`Error retrieving the movies: ${err}`);
          } else {
            res.json(results);
          }
    })
});
app.get('/api/movies/names', (req, res) => { 
    connection.query('SELECT name from movie', (err, results) => {
        if (err) {
            res.status(500).send(`Error retrieving movie names: ${err}`);
          } else {
            res.json(results);
          }
    })
});

app.listen(3000, (err) => {
    if(err) {
        throw new Error('Something bad happened...')
    }
    console.log(`Server is listening on ${3000}`)
});