Is this a bug report?

Yes

Have you read the Contributing Guidelines?

Yes

Environment

Scanning folders for symlinks in /Users/mark/Dev/drops-react-native/node_modules (9ms)

Environment:
OS: macOS High Sierra 10.13
Node: 8.6.0
Yarn: 1.1.0
npm: 5.3.0
Watchman: 4.9.0
Xcode: Xcode 9.0 Build version 9A235
Android Studio: 2.3 AI-162.4069837

Packages: (wanted => installed)
react: 16.0.0-beta.5 => 16.0.0-beta.5
react-native: 0.49.3 => 0.49.3

Steps to Reproduce

1. Install react-native via Cocoapods
2. Add CxxBridge instead of BatchedBridge to your Podfile
3. pod install

Expected Behavior

Download the same version & bundle of the boost library that is used by ios-install-third-party.sh.

Actual Behavior

The boost dependency defined in Folly.podspec points to:
https://github.com/CocoaPods/Specs/blob/master/Specs/9/9/d/boost/1.59.0/boost.podspec.json

Which is:

• Version 1.59.0 instead of boost
• A way larger bundle (83 Mb instead of 16 Mb)

File specified in the boost pod spec:
https://sourceforge.net/projects/boost/files/boost/1.59.0/boost_1_59_0.tar.gz/download

File that ios-install-third-party.sh downloads:
https://github.com/react-native-community/boost-for-react-native/releases/download/v1.63.0-0/boost_1_63_0.tar.gz