Summary:Adds a test so that people can create RCTBridgeModules that aren't auto-exported. This is useful for when you have more than one RCTBridge and want a module to be exposed in one but not the other.
RCTBridge/RCTBatchedBridge already supports this functionality; this diff adds a test so that it doesn't break.
Closes https://github.com/facebook/react-native/pull/6424
Differential Revision: D3044959
Pulled By: nicklockwood
fb-gh-sync-id: f8977249b1bf4023e704be6422ad77372d8f1714
shipit-source-id: f8977249b1bf4023e704be6422ad77372d8f1714
Building the app on both iOS and Android means building the React Native framework from source. This way you're running the latest native and JS code the way you see it in your clone of the github repo.
This is different from apps created using react-native init which have a dependency on a specific version of React Native JS and native code, declared in a package.json file (and build.gradle for Android apps).