Kendo UI file save proxy (Express)

index.js

const express = require('express');
const bodyParser = require('body-parser');
const app = express();
const port = 7569;

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

app.post('/', (req, res) => {
  const { fileName, contentType, base64 } = req.body;
  const content = Buffer.from(base64, 'base64');

  console.log(`Saving ${fileName} (${content.length} bytes)`);

  res.set('Content-Type', contentType);
  res.set('Content-Length', content.length);
  res.set('Content-Disposition', 'attachment; filename=' + fileName);
  res.send(content);
});

app.listen(port, () => {
  console.log(`Kendo UI Proxy listening at http://localhost:${port}`)
});