compositionOverInheritance.js

"use strict";

const barker = (state) => ({
	bark: () => console.log('Woof, I am ' + state.name)
})

const driver = (state) => ({
	drive: () => state.position = state.position + state.speed
})

barker({name: 'karo'}).bark()

const murderRobotDog = (name) => {
	let state = {
		name,
		speed: 100,
		position: 0
	}

	return Object.assign(
		{},
		barker(state),
		driver(state)
		// killer(state)
	)
}

murderRobotDog('sniffles').bark()