https://github.com/eriwen/es6-map-shim

Implements the evolving ES6 Map specification as closely as possible
https://github.com/eriwen/es6-map-shim

Last synced: about 2 months ago
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Implements the evolving ES6 Map specification as closely as possible

• Host: GitHub
• URL: https://github.com/eriwen/es6-map-shim
• Owner: eriwen
• License: mit
• Archived: true
• Created: 2012-11-12T15:56:27.000Z (about 12 years ago)
• Default Branch: master
• Last Pushed: 2014-10-12T17:17:15.000Z (about 10 years ago)
• Last Synced: 2024-10-29T01:19:01.039Z (2 months ago)
• Language: JavaScript
• Homepage:
• Size: 5.71 MB
• Stars: 23
• Watchers: 3
• Forks: 2
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• es6-tools - ES6 Map Shim - destructive shim that follows the latest specification as closely as possible. (Polyfills / Brunch Plugins)

README

        
# DEPRECATED: New ES6 Map Spec cannot be shimmed

# es6-map-shim - A polyfill for ES6 Maps

This is a *destructive* shim that implements the ES6 Map specification as closely as possible.

It is *slow* (lookups in O(n) time for now) and not intended for use in a production environment.

```js

var map = new Map([['foo', 'bar'], [-0, function(){}]]);

map.set(null, 42);

map.get(-0);

=> function(){}

map.has(null);

=> true

map.keys();

=> ['foo', -0, null]

map.values();

=> ['bar', function(){}, 42]

map.items();

=> [['foo', 'bar'], [-0, function(){}], [null, 42]]

map.forEach(function(value, key, mapReference) {

  console.log(typeof value);

});

=> 'string'\n'function'\n'number'\n

var iterator = map.iterator();

iterator.next();

=> ['foo', 'bar']

iterator.next();

=> [-0, function(){}]

map.delete(null);

=> true

// Remove all items

map.clear();

map.size;

=> 0

map.toString();

=> '[object Map]'

```

## Installation

In browsers, include [es6-map-shim.js](https://github.com/eriwen/es6-map-shim/downloads) in your page:

```html

```

You can install this via:

 * npm for [node.js](http://nodejs.org) v0.8+: `npm install es6-map-shim`

 * [component(1)](https://github.com/component/component): `component install eriwen/es6-map-shim`

 * [bower](http://twitter.github.com/bower/): `bower install es6-map-shim`

### Environment Support

If you also use the [es5-shim](https://github.com/kriskowal/es5-shim), you can use this in:

 * IE7+ (not fully tested yet)

 * Firefox 15+

 * Google Chrome 21+

 * Safari 4+

 * Opera 12+

 * Node.js 0.8+

 * PhantomJS