cup-mixin

This module enables multiple inheritance in JavaScript, supporting ES2020+ private fields, methods, static methods, and getters/setters.

Installation

npm i cup-mixin

Motivation

Usage

Extend the Mixin class in your modules to enable multiple inheritance. Call the mixin() static method inside the descendant class (passing this) to dynamically apply module functionality at runtime.

import { Mixin } from 'node_modules/cup-mixin/index.js'

First module

class A extends Mixin {
    constructor() {
        super()
    }

    aMethod() {
        console.log('hello')
    }
}

Second module

class B extends Mixin {
    constructor() {
        super()
    }

    bMethod() {
        console.log('world')
    }
}

Descendant class

class MyClass {
    constructor() {
        /* Multiple inheritance... */
        A.mixin(this)
        B.mixin(this)
        /* Simple as this! */
    }
}

const myClass = new MyClass()

myClass.aMethod()   // 'hello'
myClass.bMethod()   // 'world'

Supported Inheritance Types

| Feature | Supported | |-------------------|-----------| | Public Methods | ✅ | | Private Methods | ✅ | | Public Variables | ✅ | | Private Variables | ✅ | | Getters | ✅ | | Setters | ✅ | | Static Methods | ✅ |

What does 'cup' stand for?

It's like cup noodles; quick and not fancy.

Tests

npm run test

License

Released under MPL-2.0 by @blubitz.