Can't run test with fbjs 0.8.0

[Freddy03h]

Issue

Hello, I installed Draft.js on my project, a Rich Text Editor by Facebook : https://facebook.github.io/draft-js/
And this project has the particularity to be dependent of fbjs@0.8.0-alpha.2

And since, test doesn't run anymore, when I npm run test, I've got the following error :

START:
06 04 2016 17:53:21.039:INFO [karma]: Karma v0.13.22 server started at http://localhost:9876/
06 04 2016 17:53:21.071:INFO [launcher]: Starting browser PhantomJS
06 04 2016 17:53:22.960:INFO [PhantomJS 2.1.1 (Mac OS X 0.0.0)]: Connected on socket /#gba2WCoQqyELMJKhAAAA with id 86581400
PhantomJS 2.1.1 (Mac OS X 0.0.0) ERROR
  TypeError: undefined is not a constructor (evaluating 'query.startsWith(name)')
  at /Users/freddy/Desktop/react-redux-starter-kit/tests/test-bundler.js:91609 <- webpack:///~/draft-js/~/fbjs/lib/UserAgent.js:35:0

Finished in 0.654 secs / 0 secs

SUMMARY:
✔ 0 tests completed

How to reproduce

You can reproduce it on a new project, after cloning the starter kit : npm install draft-js --save and add dependancies of this lib to a view, for example add the following code to src/views/HomeView/HomeView.js :

import {
  Editor,
  EditorState,
  RichUtils,
  Entity,
  CompositeDecorator,
} from 'draft-js'

and npm run test

related ?

I don't know if it's an issue related to this project, or directly related to fbjs or maybe phantomjs. So, sorry if it's not related to this project.

I also noticed that react@15.0.0 will use fbjs@0.8.0 https://github.com/facebook/react/blob/master/package.json#L38
So it will be also problematic for the react update.

[Freddy03h]

Ok, thank's to the great help of @zpao on this issue facebook/fbjs#133 (comment)

I fixed the issue by adding babel-polyfill to the karma.conf.js file.

[dvdzkwsk]

Awesome, thanks for digging into it to figure out the exact issue and solution. I have some more to add to the discussion, but I will save that for your PR. Closing this since it's not an issue with the starter kit as it's intended, but see this comment and let me know your thoughts.