no callback nodejs

no callback nodejs

var co = require('co'),
Agenda = require('agenda');

var check = function (queryName, checkCursor, done) {
    console.log("1. this gets printed  ...");
    co(function*() {
        try {
            console.log("2. this gets printed");
            const cursor = checkCursor;
            for (let token = yield cursor.next(); token != null; token = yield cursor.next()) {
                console.log("this is not printed");
            }
        } finally {
            console.log("this is not printed");
        }
        console.log("this is not printed");
        done();
    }).then(function () {
        console.log("this is not printed");
        done();
    }, function () {
        console.log("this is not printed");
        done();
    }).catch(function(e) {
        console.log("this is not printed");
    });
};
var mongoose = require("mongoose");
var Schema = mongoose.Schema;

var TokenSchema = new Schema({
   ts: Number
});

var Token =  mongoose.model("Token", TokenSchema);
var enableChecks = function () {
var agenda = new Agenda();
agenda.database("mongodb://127.0.0.1:27017/eis", 'scheduler');
agenda.defaultLockLifetime(10000);
agenda.define("check old entries", function (job, done) {
    console.log("00. this get printed (job is run every 10s - it times out ): " + job.attrs.name);
    var c = Token.find({}).cursor();
    console.log("0. this gets printed (got cursor): " + job.attrs.name);
    check(job.attrs.name, c, done); // this collection is empty
});

agenda.on('ready', function () {
    agenda.every("2 seconds", "check old entries");
    agenda.start();
});
agenda.on('error', function (err) {
    console.log("Mongo connection failed");
});
};

enableChecks();