Summary:
Just some small changes that made the core easier for me to understand as I went through it.
**Test plan (required)**
$ cd react-native
# "Install globally" without using Sinopia :)
$ cp -r react-native-git-upgrade /usr/local/lib/node_modules/
$ cd ~
$ react-native init Zero29App --version=0.29.2
$ cd Zero29App
Made a small change in `MainApplication.java` to introduce a conflict with the new template.
$ git init && git add . && git commit -m "Initial commit"
$ react-native-git-upgrade
Worked, printed the conflicting file. Output: http://pastie.org/10972793
$ git reset --hard
$ react-native-git-upgrade --verbose
Worked, printed the conflicting file. Output: http://pastie.org/10972796
In both cases (with and without --verbose) the output of `git st` was http://pastie.org/10972795
Closes https://github.com/facebook/react-native/pull/11197
Differential Revision: D4251008
Pulled By: mkonicek
fbshipit-source-id: c5bbbeaf996cb5cb46cccc12fd1da7634cc23520
Summary:
The upgrading process based on Yeoman is a pain. For each file, Yeoman (or the brand new copyAndReplace solution a477aec) compares the newly generated content with the existing one and prompts the user if it differs, with very basic options: overwrite or skip.
I have digged into this problem and came with [rn-diff](https://github.com/ncuillery/rn-diff) (you may have read [this article](https://medium.com/ncuillery/easier-react-native-upgrades-with-rn-diff-5020b5c3de2d#.llvy2dym5)). This repository helps people to upgrade RN on their projects. An alternative upgrading process using `git apply` instead of Yeoman is described [here](https://github.com/ncuillery/rn-diff/blob/master/USAGE.md).
This PR is the integration of this process into the core. I got rid of the drawbacks mentioned in the link below in order to make it a clean, elegant, one-step operation.
This process is based on some Shell operations that:
- Generate the blank sources of both old and new versions
Closes https://github.com/facebook/react-native/pull/11110
Differential Revision: D4237107
Pulled By: mkonicek
fbshipit-source-id: 15e82e030b762415c925ccb2a62ddb354a6e18b9
