Work around webpack trying to bundle react-native

[b123400]

connect #160

This PR is not exactly doing what the issue is saying, but should solve the problem.

[oursky-travis]

@b123400, thanks for your PR! By analyzing the history of the files in this pull request, we identified @limouren to be a potential reviewer.

[louischan-oursky]

I tried this patch but it seems that it does not work with react native packager.

Here are the steps

1. Build this patch and commit the build
2. Initialize a react native project and configure skygear to point to the above commit
3. Run the react native app

It should fail with the following log

2017-04-26 19:09:26.808690 MyApp[16449:6446190] 'Failed to get user', { [ReferenceError: Can't find variable: document]
  line: 98986,
  column: 32,
  sourceURL: 'http://192.168.1.127:8081/index.ios.bundle?platform=ios&dev=false&minify=false' }

I went through the line and column in the log and discovered that the storage is incorrectly recognized as CookieStorage (used in lib/store.js) which makes use of document which does not exist in react native.

[b123400]

TLDR: I give up working around webpack.

---

• webpack translates all modules' name into number, then require them by the numbers in run time. Something like this:

  require('a') // becomes require(1);
  require = id => {1:module_a()}[id]()
  

• React native is using webpack with aliasing plugin, it changes the name of a bundle according to @providesModule

  • react-native is aliased to react-native-implementation

• require('react-native') doesn't work because it is aliased

• By working around webpack, the "string to number" translation is missing, and it is still requiring react-native after built, so it does not work.

• Tried to require('react-native-implementation'), it works. But then got a message saying loading module with string does not work in production environment.

• I give up working around webpack