You first have to install express server in your ionic project.
npm install express --save
Then create a server.js
file:
var express = require('express'),
app = express();
app.use(express.static('www'));
app.set('port', process.env.PORT || 5000);
app.listen(app.get('port'), function () {
console.log('Express server listening on port ' + app.get('port'));
});
Add an app.json
file with some data
{
"name": "app name",
"description": "A simple Ionic app for Heroku",
"logo": "http://pathToYourLogo.png",
"keywords": ["ionic", "devdactic", "whatever"]
}
Then when you deploy your app to Heroku (preferably with dropbox) it will start as an express server.