App.tsx

import * as React from 'react';
import { AppContextInterface, AppContextProvider } from './AppContext';

const sampleAppContext: AppContextInterface = {
  name: 'Using React Context in a Typescript App',
  author: 'thehappybug',
  url: 'http://www.example.com'
};

export const App = () => (
  <AppContextProvider value={sampleAppContext}>
    ...
  </AppContextProvider>
);