JavaScript: Object Swap Key With Value

const keyToUrlType = {  'city': 'cities',  'otherplace': 'places',  'province': 'provinces',  'attraction': 'attractions',  'restaurant': 'restaurants',  'hotel': 'hotels',  'all': 'nearby'}const urlTypeToKey = Object.keys(keyToUrlType).reduce((ret, key) => {  ret[keyToUrlType[key]] = key  return ret}, {})

{ 
  cities: "city", 
  places: "otherplace", 
  provinces: "province", 
  attractions: "attraction", 
  restaurants: "restaurant", 
  hotels: "hotel", 
  nearby: "all"
}