withRouter throws a compiler error

[bezreyhan]

I have a class PageHeader that uses withRouter like so:

interface IProps {
   router: { goBack: { (): void } };
}
interface IState {}

class PageHeader extends React.Component <IProps, IState> {
   ...
}

export default withRouter(PageHeader)

However, I get the following error: TS2324: Property 'router' is missing in type 'IntrinsicAttributes & IntrinsicClassAttributes<PageHeader> & IProps & { children?: {} | undefined...'.

[bezreyhan]

This is not a bug. The reason for this error was that I was not providing an interface for context. Adding this to my component class fixed the issue:

context: IContext

static contextTypes = { router: React.PropTypes.func.isRequired } where IContext is:

interface IContext { router: { goBack: { (): void } }; }