It's as simple as you may think:
var transfer = require('transfer');
transfer.to('http://localhost:8080')
.then(result => {
console.log(result);
/* { token : '2kfqnpm',
url : '2kfqnpm.transfer.pub',
pathUrl : 'path.transfer.pub/2kfqnpm',
protocols : ['http', 'https'] } */
});Now all requests going to http://2kfqnpm.transfer.pub or http://path.transfer.pub/2kfqnpm are transferred to your localhost.
In order to stop listening for upcoming requests you can use transfer.disconnect:
transfer.to(8080) // Will transfer all requests to your port 8080
.then(console.log);
transfer.disconnect();