delegate.js

private.getKeysSortByVote = function (cb) {
  modules.accounts.getAccounts({
    isDelegate: 1,
    sort: { "vote": -1, "publicKey": 1 },
    limit: slots.delegates
  }, ["publicKey"], function (err, rows) {
    if (err) {
      cb(err)
    }

    cb(null, rows.map(function (el) {
      return el.publicKey
    }))
  });
}