Thinky OrderBy issue

orderby_test.js

// ---------------------------------------------------------------------------------------------------------------------
// Testing OrderBy on a joined model
//
// @module orderby_test.js
// ---------------------------------------------------------------------------------------------------------------------

var util = require('util');

var thinky = require('thinky')({ db: 'orderby_test' });
var r = thinky.r;

// ---------------------------------------------------------------------------------------------------------------------

var Commit = thinky.createModel('Commit', {
    message: String,
    committed: { _type: Date, default: r.now() }
});

var Revision = thinky.createModel('Revision', {
    title: String,
    body: String,
    tags: [String],
    commit_id: String
});

Revision.belongsTo(Commit, "commit", "commit_id", "id");

// ---------------------------------------------------------------------------------------------------------------------

// Clear database
Commit.delete().run()
    .then(function()
    {
        return Revision.delete().run();
    })
    .then(function()
    {
        // Populate some commits
        var commit1 = new Commit({ message: "commit 1", committed: new Date(2013, 0, 1, 10, 12) });
        var commit2 = new Commit({ message: "commit 2", committed: new Date(2014, 0, 1, 10, 12) });
        var commit3 = new Commit({ message: "commit 3", committed: new Date(2014, 1, 8, 11, 32) });
        var commit4 = new Commit({ message: "commit 4", committed: new Date(2014, 1, 8, 11, 14) });
        var commit5 = new Commit({ message: "commit 5", committed: new Date(2014, 2, 2, 12, 24) });

        return commit1.save()
            .then(function()
            {
                return commit2.save();
            })
            .then(function()
            {
                return commit3.save();
            })
            .then(function()
            {
                return commit4.save();
            })
            .then(function()
            {
                return commit5.save();
            })
            .then(function()
            {
                // Populate some revisions
                var rev1 = new Revision({ title: "Test Page", body: "Test body 1.", tags: ['test'], commit_id: commit1.id });
                var rev2 = new Revision({ title: "Test Page", body: "Test body 2.", tags: ['test'], commit_id: commit2.id });
                var rev3 = new Revision({ title: "Test Page", body: "Test body 3.", tags: ['test'], commit_id: commit3.id });
                var rev4 = new Revision({ title: "Test Page", body: "Test body 4.", tags: ['test'], commit_id: commit4.id });
                var rev5 = new Revision({ title: "Test Page", body: "Test body 5.", tags: ['test'], commit_id: commit5.id });

                return rev1.save()
                    .then(function()
                    {
                        return rev2.save();
                    })
                    .then(function()
                    {
                        return rev3.save();
                    })
                    .then(function()
                    {
                        return rev4.save();
                    })
                    .then(function()
                    {
                        return rev5.save();
                    });
            });

    })

    // Illustrate the issue
    .then(function()
    {
        console.log('Should return in reverse order (ie: rev5, rev4, rev3, rev2, rev1):\n');

        return Revision.orderBy(r.row('commit')('committed')).run().map(function(revision)
        {
            console.log(util.inspect(revision, { colors: true }));
            return revision;
        });
    })

    // Exit
    .then(function()
    {
        process.exit();
    });

// ---------------------------------------------------------------------------------------------------------------------