#object-keys

An Object.keys shim. Uses Object.keys if available.

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

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

Implementation taken directly from es5-shim, with modifications, including from lodash.

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