Chrome Cookies to CSV

cookiescsv.js

var savefile = (function() {
  var a = document.createElement('a');
  document.body.appendChild(a);
  a.style = 'display: none';
  return function(data, name) {
    var blob = new Blob(data, { type: 'text/plain;charset=utf-8' }),
      url = window.URL.createObjectURL(blob);
    a.href = url;
    a.download = name;
    a.click();
    window.URL.revokeObjectURL(url);
  };
})();
function json2csv(arr, filename) {
  var replacer = (key, value) => (value === null ? '' : value); // specify how you want to handle null values here
  var header = Object.keys(arr[0]);
  var csv = arr.map(row =>
    header.map(fieldName => JSON.stringify(row[fieldName], replacer)).join(',')
  );
  csv.unshift(header.join(','));
  var data = new Blob(
    [csv.join('\r\n')], 
    { type: 'text/plain;charset=utf-8' }
  );
  savefile([data], filename);
}
chrome.cookies.getAll(
  {}, 
  v => json2csv(v, 'all.csv')
);