After 2 hours of looking for solution… it’s working.
If you want to define defaultProps, your arrow function should look like:
export const CenterBox: React.SFC<CenterBoxProps> = props => {
(...)
};
Then you can define props like:
CenterBox.defaultProps = { someProp: true }
Note that React.SFC is alias for React.StatelessComponent.
I hope that this question (and answer) help somebody. Make sure that you have installed newest React typings.