PropTypes undefined after update to RN 0.50.3

[coreform]

After updating from RN 0.48.4 to RN 0.50.3, an error gets thrown in Badge.js, something along the lines of PropTypes being undefined.

[coreform]

related info: https://reactjs.org/blog/2017/04/07/react-v15.5.0.html#new-deprecation-warnings

[ikhsanalatsary]

seems this repo is not active. pull request still open #4