weakmap-polyfill
================

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[ECMAScript6 WeakMap](http://www.ecma-international.org/ecma-262/6.0/#sec-weakmap-objects) polyfill.

## Installation

### npm

```bash
$ npm install weakmap-polyfill
```

### Usage

Import or require `weakmap-polyfill`, then **WeakMap** will be defined in the global scope if native WeakMap is not supported in running environment.

#### node

```javascript
require('weakmap-polyfill');
var weakMap = new WeakMap();
```

#### webpack etc.

```javascript
import 'weakmap-polyfill';
const weakMap = new WeakMap();
```

#### browser (standalone)

```html
<script src="weakmap-polyfill.min.js"></script>
<script>
var weakMap = new WeakMap();
</script>
```

## License

MIT