Typescript error - don't use function as a type

I have started to use TypeScript in my React-Native project

My linter doesn't like function as a type, how can I refactor my hoc to pass my linter?

AppNavigator:

const withHeader = (
    screen: Function,
    routeName: string,
    Header,
): StackNavigator =>
    createStackNavigator(
        {
            [routeName]: {
                screen,
                navigationOptions: ({routeName, props}) => ({
                    header: props => <Header {...props} />,
                }),
            },
        },
        {
            initialRoute: 'Home',
            cardStyle: {
                backgroundColor: 'transparent',
                opacity: 1,
            },
            transitionConfig: () => ({
                containerStyle: {
                    backgroundColor: 'transparent',
                },
            }),
        },
    );

My packager also gives me an error with the same file:

error: bundling failed: Error: Unable to resolve module `./navigation/AppNavigator` from `C:\Users\Matt\sites\IAapp\App.tsx`: The module `./navigation/AppNavigator` could not be found from `C:\Users\Matt\sites\IAapp\App.tsx`. Indeed, none of these files exist: