content: import React from 'react'
  import PropTypes from 'prop-types'
  
  const Todo = ({ onClick, completed, text }) => (
      <li
          onClick={onClick}
          style={{
              textDecoration: completed ? 'line-through' : 'none'
          }}
      >
          {text}
      </li>
  )
  
  Todo.propTypes = {
      onClick: PropTypes.func.isRequired,
      completed: PropTypes.bool.isRequired,
      text: PropTypes.string.isRequired
  }
  
  export default Todo