fix ts

hwe/ts/map.ts

@@ -189,7 +189,7 @@ export async function reloadWorldMap(option: loadMapOption, drawTarget = '.world
     async function setMapBackground(obj: MapResult): Promise<MapResult> {
         function setTheme() {
             const oldTheme = $world_map.data('currentTheme');
-            const newTheme = obj.theme;
+            const newTheme = (obj as unknown as Record<string, string>).theme;
             if (oldTheme === newTheme) {
                 return;
             }