How to use

subMenus

function

in

Array

const currentSubMenu = (state = MENUS[0].subMenus ? MENUS[0].subMenus[0] : null, action) => {
 switch (action.type) {
  case SET_CURRENT_SUB_MENU:
   return Object.assign({}, action.menuItem)
  case CLEAR_CURRENT_SUB_MENU:
   return null
  default:
   return state
 }
}