Parsing JSON lines data for https://overinstagram.com

parser.js

var lineReader = require('readline').createInterface({
  input: require('fs').createReadStream('./focussion-filtered-2.jl')
});

var results = {};

lineReader.on('line', function (line) {
  var json = JSON.parse(line);
  try {
    if (json["username"] && json["username"][0] === "/ViewsOfParadise") {
      var feedbackCount = json["feedback-count"];
      var regexp = /([0-9]+\s[a-z]+\s[0-9]+)/;
      var postMeta = json["post-meta"];
      var date = regexp.exec(postMeta)[0];
      results[date] = results[date] ? results[date] + 1 : 1;
    }
  } catch(err) {
    console.log(err);
  }
});

lineReader.on('close', function() {
  Object.keys(results).forEach(function(key) {
    require('fs').appendFileSync('./focussion-seanAllenTimeline.csv', '"' + key + '"' + ',"' + results[key] + '"\n');
  });
});