KnockoutJS custom component loader not executing `loadViewModel`

Context

I have been fiddling around and trying to create my own (just another) SPA framework. In this framework I've been trying to create a custom component loader to be able to do some dependency injection 'n stuff on the viewModels I'm loading.

Used KnockoutJS version: 3.3.0

Problem

The loadViewModel function on the custom component loader isn't executing when a component is loaded.

Code for reference (see file):

injector(function (ko) {
    ko.components.loaders.unshift({
        getConfig: function (name, callback) {
            var parts = name.split("/");
            callback({
                require: "components/" + name + "/" + parts[parts.length - 1]
            });
        },
        loadViewModel: function (name, viewModelConfig, callback) {
            console.log(arguments);
            callback(null);
        }
    });
});

Please not that the injector function is just some custom dependency resolver I wrote. (Almost like a define or require call on AMD components.)

The getConfig function gets executed properly whatsoever.

For a complete overview of my doodling, see this git repo

If you don't "override" the loadComponent method then the default component loader's loadComponent will be invoked which only calls the loadViewModel if you've provided a viewModel config option.

In your getConfig method you are returning a config with require which means that your require.js module has to provide the necessary viewModel config option.

However in your viewModel.js the

viewModel: func.apply(this.models[identifier], arguments) 

does not correclty set the viewModel property which remained undefined