Testing out the OLOO pattern

oloo.es5.js

/* jshint esversion: 5, strict: global, devel: true */

// Requires an Object.assign polyfill, depending on your environment.
// Nothing else special needed.

'use strict';

var log = console.log.bind(console);

var Vehicle = {
	init: function (options) {
		var optionsDefaults = Object.assign({ 
			make: '(make not supplied)', 
			model: '(model not supplied)' 
		}, options);
		for (var arg in optionsDefaults) {
			this[arg] = optionsDefaults[arg];
		}
	},
	identify: function () {
		return 'I am a very nice ' + this.make + ' ' + this.model;
	}
};

var Car = Object.assign(Object.create(Vehicle), {
	describe: function () {
		log('Car: ' + this.identify());
	}
});

var subaru = Object.create(Car);
subaru.init({ make: 'Subaru', model: 'Outback'});
var toyota = Object.create(Car);
toyota.init({ make: 'Toyota', model: 'Corolla' });

subaru.describe();
toyota.describe();

var Truck = Object.assign(Object.create(Vehicle), {
	describe: function () {
		log('Truck: ' + this.identify());
	}
});


var dodge = Object.create(Truck);
dodge.init({ make: 'Dodge' });
var toyotaT = Object.create(Truck);
toyotaT.init({ make: 'Toyota', model: 'Tacoma' });

dodge.describe();
toyotaT.describe();

oloo.es6.js

/* jshint esversion: 6, strict: global, devel: true */

// Requires Babel, which must also be set up correctly with the es2015 preset
// https://babeljs.io/docs/setup/#babel_cli

'use strict';

const log = console.log.bind(console);

// http://www.2ality.com/2015/01/es6-destructuring.html
// if called with zero arguments, the destructuring fails, because you can’t 
// match an object pattern against undefined. That can be fixed via a default 
// value. In the following code, the object pattern is matched against {} if 
// there isn’t at least one argument.

let Vehicle = {
	init({ make='(make not supplied)', model='(model not supplied)' } = {}) {
		this.make = make;
		this.model = model;
	},
	identify() {
		return `I am a very nice ${ this.make } ${ this.model }`;
	}
};

let Car = Object.create(Vehicle);

Car.describe = function () {
	log(`Car: ${ this.identify() }`);
};

let subaru = Object.create(Car);
subaru.init({ make: 'Subaru', model: 'Outback'});
let toyota = Object.create(Car);
toyota.init({ make: 'Toyota', model: 'Corolla' });

subaru.describe();
toyota.describe();

let Truck = Object.create(Vehicle);

Truck.describe = function () {
	log(`Truck: ${ this.identify() }`);
};

let dodge = Object.create(Truck);
dodge.init({ make: 'Dodge' });
let toyotaT = Object.create(Truck);
toyotaT.init({ make: 'Toyota', model: 'Tacoma' });

dodge.describe();
toyotaT.describe();