The user agents in spitsgids iRail data

filter.js

// get user agents out of json
// CCO
const data = require('./occupancy.json');

function count(acc, curr) {
  if (typeof acc[curr] == 'undefined') {
    acc[curr] = 1;
  } else {
    acc[curr] += 1;
  }

  return acc;
}

const amount = data
  .filter(point => point.user_agent)
  .map(point => point.user_agent)
  .map(agent => /Railer/i.test(agent) ? 'Railer' : agent)
  .map(agent => /Windows/i.test(agent) ? 'Windows' : agent)
  .map(agent => /Macintosh/i.test(agent) ? 'Macintosh' : agent)
  .map(agent => /iPhone/i.test(agent) ? 'iPhone' : agent)
  .map(agent => /iPad/i.test(agent) ? 'iPad' : agent)
  .map(agent => /Android/i.test(agent) ? 'Android' : agent)
  .map(agent => /Linux/i.test(agent) ? 'Linux' : agent)
  .reduce(count, {});

console.log(amount);

spitsgids.csv

source: http://gtfs.irail.be/nmbs/feedback/occupancy-2016-10-10.newlinedelimitedjsonobjects.jsonstream