{:name :tilemap
 :validator
 [:map {:closed true}
  [:map/width number?]
  [:map/height number?]
  [:map/tilesets
   [:sequential
    [:map {:closed true}
     [:tileset/start-index number?]
     [:tileset/name keyword?]]]]
  [:tiles/width number?]
  [:tiles/height number?]
  [:map/layers
   [:sequential
    [:map {:closed true}
     [:layer/id number?]
     [:layer/name string?]
     [:layer/width number?]
     [:layer/height number?]
     [:layer/tiles
      [:sequential
       [:map {:closed true}
        [:horizontal? boolean?]
        [:vertical? boolean?]
        [:diagonal? boolean?]
        [:id number?]]]]]]]]}