Heroku + node.js error (Web process failed to bind to $PORT within 60 seconds of launch)

Question

I have my first node.js app (runs fine locally) - but I am unable to deploy it via heroku (first time w/ heroku as well). The code is below. SO doesn\'t let me write so much

Answer 1

In my case, neither the port nor the host was the problem. The index.js was divided into 2 files. server.js:

//server.js
const express = require('express')
const path = require('path')

const app = express()

app.use(express.static(path.resolve(__dirname, 'public')));
// and all the other stuff
module.exports = app

//app.js
const app = require('./server');
const port = process.env.PORT || 3000;
app.listen(port, '0.0.0.0', () => {
    console.log('Server is running s on port: ' + port)
});

from package.json we ran node app.js.

Apparently that was the problem. Once I combined the two into one file, the Heroku app deployed as expected.