Polyfill for Array.prototype.from
npm install phantomjs-polyfill-array-fromA PhantomJS polyfill for Array.prototype.from. Based on MDN specification.

```
npm install --save-dev phantomjs-polyfill-array-from
``
require('phantomjs-polyfill-array-from')
Include the polyfill directly in the files list of your karma.conf
```
...
files: [
'./node_modules/phantomjs-polyfill-array-from/array-from-polyfill.js',
...
]
...