Summary:
When testing `react-native-git-upgrade` locally I noticed a warning:
A more recent version of "react-native-git-upgrade" has been found:
Current: 0.1.0
Latest: 0.0.1
See https://www.npmjs.com/package/react-native-git-upgrade
This won't happen to a lot of people but better fix the warning. Also, if the check for updates fails, don't crash - the check for updates is not critical to the tool working.
Also, slightly updated one error message.
**Test plan (required)**
Installed `react-native-git-upgrade` locally, ran it inside an app folder (RN 0.29).
Didn't see the wrong "more recent version" warning anymore.
Tried making `checkForUpdates` fail by adding some dummy code: `semver.foo()`. Saw a warning but the process continued:
git-upgrade WARN Check for latest version failed semver.foo is not a function
Saw a more descriptive error message:
git-upgrade ERR! Error: react-native version in "package.json" (0.29.0) doesn't match the installed version in "node_mod
Closes https://github.com/facebook/react-native/pull/11188
Differential Revision: D4244002
Pulled By: bestander
fbshipit-source-id: 772044750a933663cb516201d09e2873462cca4a
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
