content: import React from 'react'
  import { Link } from 'react-router-dom'
  
  export const Header = () => (
    <div>
      <h1>React ESC Example Project</h1>
      <Link to="/">
        Home
      </Link>
      {' · '}
      <Link to="/counter">
        Counter
      </Link>
      {' · '}
      <Link to="/async">
        Async
      </Link>
    </div>
  )
  
  export default Header
  