node-inherits
Inheritance module for node.js
Getting started
npm install node-inherits
Overview
Inherits
To inherit from a super constructor, call inherits with your constructor and the super one:
Super = function () {};
Constructor = inherits(function () {}, Super);
Another way to do this is to call inherits with your super constructor and use its new inherits method:
Super = inherits(function () {});
Constructor = Super.inherits(function () {});
During inheritance, all constructor are called from the super to last inherited.
Super = inherits(function () {
this.name = 'Super';
});
Constructor = Super.inherits(function () {
this.name += ' > Constructor';
});
object = new Constructor();
console.log(object.name); // 'Super > Constructor';
instanceof
Like with node.js util.inherits, your constructor instances will be also instance of super constructor:
object = new Constructor();
console.log(object instanceof Constructor); // true
console.log(object instanceof Super); // true
prototype and constructor properties
All properties attached to the constructor and prototype are inherited, taking care of their descriptors.
This means that if Super constructor declared a property with configurable
set to false
, it will be preserved.