Scope of events from process.emit in Node.js

I have code to sent event like this:

process.emit('event', event);

I would like to listen to these event like this:

process.on('event', function(event) {
     //HANDLING LOGIC
});

It works fine when files are located in the same folder. When I located listener in other folder it is not fired. What can be a root cause of this and hwo can I handle it?

via kadiii