text: import React, { Component } from 'react';
  import { connect } from 'react-redux';
  
  class BookDetail extends Component {
    render() {
  
      if (!this.props.book) {
        return <div>Select a book to get started</div>
      }
  
      return (
        <div>
          <h3>Details for: </h3>
          <div>{this.props.book.title}</div>
        </div>
      );
    }
  }
  
  
  function mapStateToProps(state) {
    return {
      book: state.activeBook
    };
  }
  
  
  export default connect(mapStateToProps)(BookDetail);
  