text: 
  const appNav = (state = {}, action) => {
      switch (action.type) {
          case 'OPEN_NAVBAR':
              return {
                  ...state,
                  isOpen: true
              }
  
          case 'CLOSE_NAVBAR':
              return {
                  ...state,
                  isOpen: false
              }
  
          default:
              return state
          }
      }
  
  export default appNav
  