I've written a web scraper using node.js which scrapes a particular website, gets some data from there and then tweets it. I've deployed this app on Heroku and app crashes by giving an error that $PORT couldn't be bound within 60 seconds. I've tried putting both worker: node index.js and web: node index.js in Procfile one by one, but it crashes.
Since my app is not a server hence does not need a port number, how can I keep it running with out making my app a server?
Turn on the worker process and off the default web process:
$ heroku scale web=0 worker=1