node-fps-hk/example/index.js

var fps = require('node-fps-hk')
var qrimage = require('qr-image');
var http = require('http');

const server = http.createServer(function (req, res) {
  if (req.url == '/') {
    fps.setMerchantID("0000001");
    fps.setBillNumber("0002");
    fps.setStoreLabel("0003");
    fps.setLoyaltyNumber("0004");
    fps.setCustomerLabel("0005");
    fps.setTerminalLabel("0006");
    fps.setPurposeOfTransaction("0007");
    fps.setMobileNumber("12345678");
    fps.setTransactionAmount("5000");
    fps.setReferenceLabel("HKFPS_TESTING");
    var string = fps.generate();
    var code = qrimage.image(string, { type: 'png' });
    res.setHeader('Content-type', 'image/png');  //sent qr image to client side
    code.pipe(res);
  }
});

server.listen(8080, () => {
  console.log('Server is running on http://localhost:8080');
});