redux-lesson-filter-link.js

 import React from 'react'

 const FilterLink = ({ active, children, handleClick }) => {
   if (active) {
     return <span>{ children }</span>
   }

   return (
     <a  href="#"
         onClick={ (e) => {
           e.preventDefault()
           handleClick()
         }}
     >
       { children }
     </a>
   )
 }

 export default FilterLink