https://github.com/panates/multiple-extend

Helper module for Javascript that allows multiple Classes inheritance.
https://github.com/panates/multiple-extend

Last synced: about 2 months ago
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Helper module for Javascript that allows multiple Classes inheritance.

• Host: GitHub
• URL: https://github.com/panates/multiple-extend
• Owner: panates
• License: mit
• Created: 2019-09-02T13:11:19.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2023-01-09T06:55:57.000Z (almost 2 years ago)
• Last Synced: 2024-03-23T10:42:28.669Z (9 months ago)
• Language: JavaScript
• Homepage:
• Size: 142 KB
• Stars: 0
• Watchers: 4
• Forks: 0
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# multiple-extend

[![NPM Version][npm-image]][npm-url]

[![NPM Downloads][downloads-image]][downloads-url]

[![Build Status][travis-image]][travis-url]

[![Test Coverage][coveralls-image]][coveralls-url]

[![Dependencies][dependencies-image]][dependencies-url]

[![DevDependencies][devdependencies-image]][devdependencies-url]

## About

This is a helper module for Javascript that allows multiple Classes inheritance. 

## Installation

`$ npm install multiple-extend [--save]`

## Usage

```js

const classes = require('multiple-extend');

class Character {

  constructor(name) {

    this.name = name;

    this.distance = 0;

    this.canWalk = true;

  }

  walk(x) {

    return this.distance += x;

  }

}

class Jumper {

  constructor() {

    this.distance = 0;

    this.canJump = true;

  }

  jump(x) {

    return this.distance += x;

  }

}

class Diver {

  constructor() {

    this.deep = 0;

    this.canDive = true;

  }

  dive(x) {

    return this.deep += x;

  }

}

class SuperCharacter extends classes(Character, Jumper, Diver) {

}

const player = new SuperCharacter('player1');

console.log(player.name); // Prints out "player1"

if (player.canWalk) // Can walk and will walk 5

  player.walk(5);

if (player.canJump) // Can jump and will jump 1

  player.jump(1);

if (player.canDive) // Can dive and will dive 1

  player.dive(1);

```

### Argument pass-through

You can also define which arguments will be sent to subclass constructors

````js

class SuperCharacter extends classes([Character, null], [Jumper, 1, 2], [Diver, [3, null]]) {

  constructor(distanceMin, distanceMax, ...args) {

    super(distanceMin, distanceMax, ...args);

    this.name = 'player1';

  }

}

````

In the example above Character constructor will be no argument, 

Jumper constructor will be called with arguments at index 1 and 2 (distanceMin, distanceMax),

Diver constructor will be called with arguments at index from 3 to Last.

### Checking implementations

You can check if extended class and its instance has implemented any class.

````js

const classes = require('multiple-extend');

const Implemented = classes.Implemented; // Special symb ol

class SuperCharacter extends classes(Character, Jumper, Diver) {

}

if (SuperCharacter[Implemented](Jumper))

  console.log('Jumper implemented');

// You can also check using class names

if (SuperCharacter[Implemented]('Diver'))

  console.log('Diver implemented');

````

## Node Compatibility

  - node `>= 6.0`;

  

### License

[MIT](LICENSE)

[npm-image]: https://img.shields.io/npm/v/multiple-extend.svg

[npm-url]: https://npmjs.org/package/multiple-extend

[travis-image]: https://img.shields.io/travis/panates/multiple-extend/master.svg

[travis-url]: https://travis-ci.org/panates/multiple-extend

[coveralls-image]: https://img.shields.io/coveralls/panates/multiple-extend/master.svg

[coveralls-url]: https://coveralls.io/r/panates/multiple-extend

[downloads-image]: https://img.shields.io/npm/dm/multiple-extend.svg

[downloads-url]: https://npmjs.org/package/multiple-extend

[gitter-image]: https://badges.gitter.im/panates/multiple-extend.svg

[gitter-url]: https://gitter.im/panates/multiple-extend?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge

[dependencies-image]: https://david-dm.org/panates/multiple-extend/status.svg

[dependencies-url]:https://david-dm.org/panates/multiple-extend

[devdependencies-image]: https://david-dm.org/panates/multiple-extend/dev-status.svg

[devdependencies-url]:https://david-dm.org/panates/multiple-extend?type=dev

[quality-image]: http://npm.packagequality.com/shield/multiple-extend.png

[quality-url]: http://packagequality.com/#?package=multiple-extend