sessionStorage & localStorage for NodeJS
===

An inefficient, but as W3C-compliant as possible using only pure JavaScript, `DOMStorage` implementation.

Purpose
----

This is meant for the purpose of being able to run unit-tests and such for browser-y modules in node.

Usage
----

```javascript
var Storage = require('dom-storage')

    // in-file, doesn't call `String(val)` on values (default)
  , localStorage = new Storage('./db.json', { strict: false, ws: '  ' })

    // in-memory, does call `String(val)` on values (i.e. `{}` becomes `'[object Object]'`
  , sessionStorage = new Storage(null, { strict: true })

  , myValue = { foo: 'bar', baz: 'quux' }
  ;

localStorage.setItem('myKey', myValue);
myValue = localStorage.getItem('myKey');

// use JSON to stringify / parse when using strict w3c compliance
sessionStorage.setItem('myKey', JSON.stringify(myValue));
myValue = JSON.parse(localStorage.getItem('myKey'));
```

API
---

  * getItem(key)
  * setItem(key, value)
  * removeItem(key)
  * clear()
  * key(n)
  * length

### Options

  * strict - whether to stringify strictly as text `[Object object]` or as json `{ foo: bar }`.
  * ws - the whitespace to use saving json to disk. Defaults to `'  '`.

Tests
---

```javascript
0 === localStorage.length;
null === localStorage.getItem('doesn't exist');
undefined === localStorage['doesn't exist'];

localStorage.setItem('myItem');
"undefined" === localStorage.getItem('myItem');
1 === localStorage.length;

localStorage.setItem('myItem', 0);
"0" === localStorage.getItem('myItem');

localStorage.removeItem('myItem', 0);
0 === localStorage.length;

localStorage.clear();
0 === localStorage.length;
```

Notes
---

  * db is read in synchronously
  * No callback when db is saved
  * Doesn't not emit `Storage` events (not sure how to do)

License
-------

* [Apache2](http://www.apache.org/licenses/LICENSE-2.0)