Backbone like Class.extend utility for Node
npm install class-extendClass.extend
============
Backbone like .extend inheritance helper for Node.js
Usage
------------
You basically got two options:
`` javascript
// 1. Extend from the blank class
const Base = require('class-extend');
const Sub = Base.extend();
// 2. Add the .extend helper to a class
MyClass.extend = require('class-extend').extend;
`
#### .extend()
.extend allow you to assign prototype and static methods.
If no constructor method is assigned, the parent constructor method will be called by default.
` javascript
// Extend a class
const Sub = Parent.extend({
// Overwrite the default constructor
constructor() {},
// Sub class prototypes methods
hello() { console.log('hello'); }
}, {
// Constructor static methods
hey() { console.log('hey'); }
});
Sub.hey();
// LOG: hey
const instance = new Sub();
instance.hello();
// LOG: hello
`
#### .__super__
Sub classes are assigned a __super__ static property pointing to their parent prototype.
` javascript``
const Sub = Parent.extend();
assert(Sub.__super__ === Parent.prototype);
License
---------------
Copyright (c) 2025 Simon Boudrias
Licensed under the MIT license.