lodash - query string to object

var getQueryString = function (queryString) {
  var query = (queryString || window.location.search).substring(1); // delete ?
  if (!query) {
    return false;
  }
  return _
  .chain(query.split('&'))
  .map(function(params) {
    var p = params.split('=');
    return [p[0], decodeURIComponent(p[1])];
  })
  .fromPairs()
  .value();
};