Test to check if some of the apps I have is on the old cedar platform in heroku

ceadar-test.js

// The legacy Cedar-10 stack has been deprecated and will reach its end-of-life on November 4, 2015.
// To see if some of your apps is old;
// HEROKU_API_TOKEN="<YOUR_HEROKU_TOKEN_HERE>" node ceadar-test.js 

const Heroku = require('heroku-client');
const hl = require('highland');

var hk = new Heroku({
  token: process.env.HEROKU_API_TOKEN
});

var hkApps = hk.apps();

var list = hl.wrapCallback(hkApps.list.bind(hkApps));

list()
  .flatMap(x => x)
  .pick(['name', 'stack'])
  .map(x => ({appName: x.name, stackName: x.stack.name}))
  .filter(x => x.stackName !== 'cedar-14')
  .toArray((a) => {
    if(a.length === 0) console.log('All of your apps are on the cedar-14 app');
    else console.log('\n\nThis apps are missing on cedar-14:\n %s', JSON.stringify(a, null, 2));
  })