Alternative to global namespacing. Rather than having globals or Singletons, declare each object you want to access to as a "lineage". The spawn() function is used to pass lineage values from an instance of class Elder to a new instance of class Younger: youngerInstance = elderInstance.spawn(Younger).

lineage-example.js

Pet = Model.extend({})

PetController = Controller.extend({
	"initialize": function (options) {
		this.names = options.names;
		this.model = this.spawn(Pet)
		this.view = this.spawn(PetView, {
			"model": this.model
		}) // "names" is passed implicitly
		this.view.render();
	}
})

PetView = View.extend({
	"lineages": {"names": []}, // Set from spawning object if possible, otherwise default to []
	"render": function () {
		if (!this.model.get("name")) {
			// "names" is never explicitly passed, but has been taken from PetController
			return new Chooser(this.names))
		}
		return this.model.get("name")
	}
})

c = new PetController({
	"names": ['Lemon', 'Max', 'Cotton', 'Bruiser']
});