gistfile1.txt

            var chunksize = 50;
            
            return (function next(items) {
                if (!items.length) { return; }
                
                return knex('sites')
                    .insert(items.slice(0, chunksize))
                    .then(function () {
                        return next(items.slice(chunksize));
                    });
            })(data())
            .then(function() { return deps.updateSeq('sites') });