appConfig.js

const appConfig = {
  port: process.env.PORT || 3000,
  hostUrl: process.env.HOST_URL || `http://your-local-machine-ip`
};

var paytmConfig = {
	mid: process.env.PAYTM_MERCH_ID || '<YOUR_MERCHANT_ID_HERE>',
	key: process.env.PAYTM_MERCH_KEY || '<YOUR_MERCHANT_KEY_HERE>',
  website: process.env.PAYTM_MERCH_WEBSITE || 'WEBSTAGING',
  transactionUrl: process.env.PAYTM_TXN_URL || 'https://securegw-stage.paytm.in/theia/processTransaction',
  hostName: process.env.PAYTM_HOST || 'securegw-stage.paytm.in'
};