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');
const bodyParser = require('body-parser');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
  extended: true
}));

app.post('/api/movie', (req, res) => {
  const formData = req.body;
  connection.query('INSERT INTO movie SET ?', formData, (err, results) => {
    if (err) {
      console.log(err);
      res.status(500).send("Error saving an employee");
    } else {
      res.status(200).send(formData);
      }
     }
   );
 }
);


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