title: Property is missing in type error
body: <p>I am having an issue with working through a demo React project. Most of the issues stem from me trying to implement it in Typescript where they are using Javascript. This gist is my app.tsx file.</p>
  
  <p><a href="https://gist.github.com/jjuel/59eed01cccca0a7b4f486181f2a14c6c" rel="noreferrer">https://gist.github.com/jjuel/59eed01cccca0a7b4f486181f2a14c6c</a></p>
  
  <p>When I run this I get errors pertaining to the interface. </p>
  
  <blockquote>
    <p>ERROR in ./app/app.tsx
    (38,17): error TS2324: Property 'humans' is missing in type 'IntrinsicAttributes &amp; IntrinsicClassAttributes &amp; AppProps &amp; { children?: ReactElement |...'.</p>
    
    <p>ERROR in ./app/app.tsx
    (38,17): error TS2324: Property 'stores' is missing in type 'IntrinsicAttributes &amp; IntrinsicClassAttributes &amp; AppProps &amp; { children?: ReactElement |...'.
    webpack: bundle is now VALID.</p>
  </blockquote>
  
  <p>I have no idea what is going on with this. Does anyone know what my issue could be? Thanks!</p>