Lets you pass UK station codes to this script to view delays etc

late-trains.js

let lateFlag = 0;
const isTrainLate = train => (train.sta !== train.eta && train.eta.toLowerCase() !== 'on time');

const processTrains = ({ trainServices }) => trainServices.some((train) => {
  if (isTrainLate(train)) {
    console.log(`The ${train.sta} won't arrive until ${train.eta} 😕`);
    lateFlag = 1;
  } else if (lateFlag) {
    console.log('Subsequent trains are running fine');
    lateFlag = 0;
    return true;
  } else {
    console.log('Service looks good');
    lateFlag = 0;
    return true;
  }
});

if (!process.argv[2] || !process.argv[3]) {
  throw new Error('No station code given');
}

console.log('Loading...\n');

require('https').get(`https://huxley.apphb.com/all/${process.argv[3]}/from/${process.argv[2]}/2?accessToken=DA1C7740-9DA0-11E4-80E6-A920340000B1`, (response) => {
  let body = '';
  response.on('data', chunk => body += chunk);
  response.on('end', () => processTrains(JSON.parse(body)));
})