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# object-keys

\#object-keys [![Version Badge](http://versionbadg.es/ljharb/object-keys.svg)](https://npmjs.org/package/object-keys)

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An Object.keys shim. Invoke its "shim" method to shim Object.keys if it is unavailable.

Most common usage:

```js
var keys = Object.keys || require('object-keys');
```

### Example

```js
var keys = require('object-keys');
var assert = require('assert');
var obj = {
	a: true,
	b: true,
	c: true
};

assert.deepEqual(keys(obj), ['a', 'b', 'c']);
```

```js
var keys = require('object-keys');
var assert = require('assert');
/* when Object.keys is not present */
delete Object.keys;
var shimmedKeys = keys.shim();
assert.equal(shimmedKeys, keys);
assert.deepEqual(Object.keys(obj), keys(obj));
```

```js
var keys = require('object-keys');
var assert = require('assert');
/* when Object.keys is present */
var shimmedKeys = keys.shim();
assert.equal(shimmedKeys, Object.keys);
assert.deepEqual(Object.keys(obj), keys(obj));
```

### Source

Implementation taken directly from [es5-shim](https://github.com/es-shims/es5-shim/blob/master/es5-shim.js#L542-589), with modifications, including from [lodash](https://github.com/lodash/lodash).

### Tests

Simply clone the repo, `npm install`, and run `npm test`