// vvv--- shown to aide explanation

// const Library = (props) => {
//  const books = [
//  "The Adventures of Herlock Sholmes",
//  "The Life and Lessons of Manny Mole",
//  "My Brother's Book"
//  ];

const response = (books.indexOf(props.request) > -1)
 ? <p>We have that book!</p>
 : <p>Sorry, we don't have that book.</p>

// vvv--- shown to aide explanation of props.request, don't include it

// ReactDOM.render(
// <Library // request={"The Adventures of Herlock Sholmes"} // />,
//  document.getElementById("root")
// );