Summary:
When writing a native module in C++ using CxxModule, its not currently possible to write async methods which take two callbacks, that shouldn't be projected to JS as a promise. I hit this when trying to implement the AppState module in c++. AppState has a single method on it, getCurrentAppState, which takes two callbacks (a success and a failure callback).
This change adds a couple of new CxxModule::Method ctors, which allow devs to specify that they want two callbacks, but not a promise. This is done using an extra tag in the ctor, similar to how you specify that you want to make a synchronous method. I used the existing AsyncTag to indicate that the 2 callback version should be async, and not a promise.
Pull Request resolved: https://github.com/facebook/react-native/pull/21586
Reviewed By: shergin
Differential Revision: D10520204
Pulled By: fkgozali
fbshipit-source-id: bcb2dbd91cba3c1db987dc18960247218fdbc032
Summary: This change drops the year from the copyright headers and the LICENSE file.
Reviewed By: yungsters
Differential Revision: D9727774
fbshipit-source-id: df4fc1e4390733fe774b1a160dd41b4a3d83302a