AppContext.tsx

type Omit<T, K extends keyof T> = Pick<T, Exclude<keyof T, K>>;

export function withAppContext<
  P extends { appContext?: AppContextInterface },
  R = Omit<P, 'appContext'>
  >(
  Component: React.ComponentClass<P> | React.StatelessComponent<P>
  ): React.SFC<R> {
  return function BoundComponent(props: R) {
    return (
      <AppContextConsumer>
        {value => <Component {...props} appContext={value} />}
      </AppContextConsumer>
    );
  };
}