REDMOND\acoates 8826d8b233 Allow CxxModules to implement methods with two callbacks (#21586)
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
2018-11-13 19:52:40 -08:00
..
2018-10-31 01:37:26 -07:00