Snippet from node app

app.js

var Pusher = require('pusher');

var pusher = new Pusher({
  appId: 'APP_ID',
  key: 'APP_KEY',
  secret: 'APP_SECRET',
  cluster: 'APP_CLUSTER'
});

// Logic which will then trigger events to a channel
function trigger(){
...
...
pusher.trigger('my-channel', 'my-event', {"message": "hello world"});
...
...
}