Comment by boubiyeah

That compiler flag is wonderful, and so is the newer 'strictNullChecks'

I use these typings: https://github.com/DefinitelyTyped/DefinitelyTyped/blob/mast...

Then create my components like this:

interface Props {

}

interface State {

}

class MyComponent extends React.Component<Props, State> {

}

and everything is typed correctly (beside setState which is impossible to type exactly as of today)