Collections-ES6

Provides support for ES6 Map, Set, WeakMap and WeakSet in ES5 for older JS environments i.e. older browsers or NodeJS.

> ES6 Map, Set, WeakMap and WeakSet polyfill in pure ES5.

Install

It depends on symbol-es6 module, so you need to include both.

$3

Install it from npm and require it before any other modules:

``bash
$ npm install --save collections-es6
`

`javascript
require("symbol-es6");
require("collections-es6");
`

$3

If you prefer CDN, then just insert it into your HTML page on the top of other scripts:

`html


`

Examples

`javascript
"use strict";

var ES6 = require("symbol-es6");
ES6 = require("collections-es6");


var map = new Map([[1, 2], ["Hi", "Hello World"]]);

console.log(map.has(1)); //true
console.log(map.has("Hi")); //true

map.set(NaN, "NaN");
map.set(NaN, "Again NaN!");
map.set(0, "Zero");
map.set(-0, "Again Zero!");

console.log(map.size); //4
console.log(map.has(NaN)); //true
console.log(map.size); //4
console.log(map.has(0)); //true
console.log(map.has(-0)); //true

var set = new Set([NaN, 0, -0, "Hi", "Hello World"]);
set.add(Infinity);

console.log(set.has(NaN)); //true
console.log(set.has("Hi")); //true
console.log(set.size); //5
console.log(set.has(Infinity)); //true
console.log(set.has(-Infinity)); //false

var wm = new WeakMap();
wm.set(Object, "object");
wm.set(Function, "function");
wm.set({}, "new Object");

console.log(wm.has(Object)); //true
console.log(wm.has({})); //false

var ws = new WeakSet();
ws.add(Function);
ws.add({});

console.log(ws.has({})); //false
console.log(ws.has(Function)); //true

console.log(ES6.isMap(map)); //true
console.log(ES6.isSet(set)); //true
console.log(ES6.isWeakMap(wm)); //true
console.log(ES6.isWeakSet(ws)); //true
`

Polyfills

* Map

* Map.prototype.size
* Map.prototype.set()
* Map.prototype.get()
* Map.prototype.has()
* Map.prototype.clear()
* Map.prototype.delete()
* Map.prototype.entries()
* Map.prototype.forEach()
* Map.prototype.keys()
* Map.prototype.values()
* Map.prototype[@@iterator]()
* Map.prototype[@@toStringTag]()

* Set
* Set.prototype.size
* Set.prototype.add()
* Set.prototype.clear()
* Set.prototype.delete()
* Set.prototype.entries()
* Set.prototype.forEach()
* Set.prototype.has()
* Set.prototype.keys()
* Set.prototype.values()
* Set.prototype[@@iterator]()
* Set.prototype[@@toStringTag]()

* WeakMap

* WeakMap.prototype.delete()
* WeakMap.prototype.get()
* WeakMap.prototype.has()
* WeakMap.prototype.set()
* WeakMap.prototype[@@toStringTag]()

* WeakSet

* WeakSet.prototype.add()
* WeakSet.prototype.delete()
* WeakSet.prototype.has()
* WeakSet.prototype[@@toStringTag]()

Contributing

Your PRs and stars are always welcome.

Please, try to follow:

* Clone the repository.
* Checkout develop branch.
* Install dependencies.
* Add your new features or fixes.
* Build the project.

`sh
$ git clone https://github.com/rousan/collections-es6.git
$ cd collections-es6
$ git checkout develop
$ npm i
$ npm run build
``