More typescript improvements

src/events/gameMaster/mapEditor/create.ts

@@ -1,5 +1,7 @@
+import type { MapCacheT } from '#entities/map'
+
 import { BaseEvent } from '#application/base/baseEvent'
-import { Map, MapCacheT } from '#entities/map'
+import { Map } from '#entities/map'
 
 type Payload = {
   name: string

src/events/gameMaster/mapEditor/update.ts

@@ -63,9 +63,11 @@ export default class MapUpdateEvent extends BaseEvent {
       if (data.tiles.length > data.height) {
         data.tiles = data.tiles.slice(0, data.height)
       }
+
       for (let i = 0; i < data.tiles.length; i++) {
-        if (data.tiles[i].length > data.width) {
-          data.tiles[i] = data.tiles[i].slice(0, data.width)
+        const row = data.tiles[i]
+        if (row !== undefined && row.length > data.width) {
+          data.tiles[i] = row.slice(0, data.width)
         }
       }