Summary: Remove `$Subtype` and `$Supertype` utilities. Replacement was done on a best-effort basis. In many cases it sufficed to replace `$Supertype<T>` and `$Subtype<T>` with `T`, but when this was not possible `any | T` and `any & T` were used instead.
Reviewed By: jbrown215
Differential Revision: D13624765
fbshipit-source-id: 82ee9d43cfc318ed4bd2d84e0f4c5c1d8f488a9c
Summary:
These comments were confusing since we don't use flow-typed.
cc bvaughn.
I have replaced our local types by flow-typed, removed metro custom stub and deleted `flow-github` directory.
As result, createReactClass, PropTypes and Metro types won't be distributed to RN users. If you need it, you should relay on flow-typed.
Pull Request resolved: https://github.com/facebook/react-native/pull/20320
Reviewed By: TheSavior
Differential Revision: D13517157
Pulled By: rickhanlonii
fbshipit-source-id: e52c0b6114114a706f6152b2031c600e3dece0d2
