https://github.com/xeeo/nc-singleton

a simple singleton module to be used in your contructors
https://github.com/xeeo/nc-singleton

Last synced: 12 months ago
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a simple singleton module to be used in your contructors

• Host: GitHub
• URL: https://github.com/xeeo/nc-singleton
• Owner: xeeo
• Created: 2015-09-18T16:25:55.000Z (almost 11 years ago)
• Default Branch: master
• Last Pushed: 2016-04-09T04:52:46.000Z (about 10 years ago)
• Last Synced: 2025-03-04T10:28:12.072Z (over 1 year ago)
• Language: JavaScript
• Size: 3.91 KB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# nc-singleton

A simple singleton module to be used inside your constructor.

## Usage

Let's assume you are working on a module. You use prototype and you want that all your new statements return the same instance.

```javascript

'use strict';

var singleton = require('nc-singleton');

var Cache = function Cache() {

    return singleton.call(this, Cache);

};

Cache.prototype.setTime = function() {

    this.time = new Date();

};

Cache.prototype.getTime = function() {

    return this.time;

};

var cache = new Cache()

cache.setTime();

console.log(cache.getTime());

setTimeout(function(){

  var cache = new Cache();

  console.log(cache.getTime());

}, 4000);

```

It also works with ES6

```javascript

'use strict';

var singleton = require('nc-singleton');

let instance = null;

class Cache {

      constructor() {

        return singleton.call(this, Cache);

      }

      setTime() {

          this.time = new Date();

      }

      getTime() {

          return this.time;

      }

}

let cache = new Cache()

cache.setTime();

console.log(cache.getTime());

setTimeout(function(){

  let cache = new Cache();

  console.log(cache.getTime());

}, 4000);

```

For testing just npm test :)

That's it.