Add @ReactModule annotation

[janicduplessis]

Add @ReactModule annotation, this will eventually be used by TurboModules annotation processor.

[jdnichollsc]

Hi @janicduplessis,
So it looks like we need to revert this change? dcbfaef#diff-7ae5a9093507568eabbf35c3b0665732

What do you think? 🤔

[janicduplessis]

@jdnichollsc Hmm why do we need to revert this? Should not be related to this PR.

[jdnichollsc]

So is com.facebook.react.module.annotations already included? 🤔

[janicduplessis]

@jdnichollsc Yes it is included in react native already, there is no need to add dependencies.

[jdnichollsc]

@janicduplessis thanks for your help mate, Do you know any link to see the documentation of this? 👍

[janicduplessis]

There is not much documentation yet except react-native-community/discussions-and-proposals#40. Basically the annotation allows generating some info about the native module (mostly the name) that can be used by TurboReactPackage. The annotation was added a long time ago so there's no issue with backwards compatibility.

[janicduplessis]

Also some info in this twitter thread https://twitter.com/janicduplessis/status/1157172268495179776

[jdnichollsc]

Hey mate, thanks for your help! In order to merge this PR, how can we avoid an issue like this? react-native-async-storage/async-storage#153

[janicduplessis]

Hmm I think this might just happen as a result of a weird issue when upgrading. It is mentionned in the issue that it does not happen on a new project.

[jdnichollsc]

Thanks for your help! 👍