node package manager

heritable

Heritable

Inheritance mechanisms for making prototypal classes

Installation

via [npm]

npm install heritable

Usage

var	Heritable = require('heritable.js'),
	Animal, Human,	// Constructors
	animal, human;	// instances

Animal = new Heritable('Animal');
animal = new Animal();
console.log('animal instanceof Animal: ' + (animal instanceof Animal));

Human = new Heritable('Human');
human = new Human();
console.log('human instanceof Animal: ' + (human instanceof Animal));
console.log('human instanceof Human: ' + (human instanceof Human));
console.log('animal instanceof Human: ' + (animal instanceof Human));

Some details

You can provide an initializer function and methods for a Heritable class:

animalInitializer = function (o) {
	o = o || {};
	this.type = o.type;
};

animalMethods = {
	getType: function () {
		return this.type;
	}
};

Animal = new Heritable('Animal', null, animalInitializer, animalMethods);
animal = new Animal({type: 'gorilla'});
console.log('animal type:   ' + animal.getType());

To Do

1 do not init if already an object
2 add a method for adding methods to a Heritable class
3 perhaps: distinguish Heritable class methods from members