Convert LilyBin MongoDB dump to new DB

convert.js

var Promise = require('bluebird');
const scores = require('./lib/db');

var LineByLineReader = require('line-by-line'),
    lr = new LineByLineReader('scores.json');

lr.on('line', function(line) {
  var data = JSON.parse(line);
  var id = data['_id'];
  console.log(id, data.revisions.length);
  Promise.each(data.revisions, function(rev) {
    return scores.save(id, rev.code, rev.version);
  });
});

Hi, I am trying to disable roll in flycontrols.js. please help with my code.