chore: restrict area replacing

Author: leaftail1880

src/lib/region/form.ts

@@ -213,15 +213,7 @@ const editRegion = form.params<{ region: Region; displayName: boolean }>(
       noI18n`Заменить зону`,
       selectArea({
         title: noI18n`Заменить зону`,
-        onSelect: area => {
-          // Area changed, need to update chunk query storages too
-          Region.chunkQuery.remove(region)
-          region.area = area
-          region.save()
-          Region.chunkQuery.add(region)
-
-          return self
-        },
+        onSelect: area => (region.replaceArea(area), self),
       }),
     )
 

src/lib/region/kinds/region.ts

@@ -211,11 +211,19 @@ export class Region {
    * @param o.key - The key of the region. This is used to identify the region.
    */
   constructor(
-    public area: Area,
+    readonly area: Area,
     options: RegionCreationOptions,
     readonly id: string,
   ) {}
 
+  public replaceArea(newArea: Area) {
+    // Area changed, need to update chunk query storages too
+    Region.chunkQuery.remove(this)
+    ;(this as { area: Area }).area = newArea
+    this.save()
+    Region.chunkQuery.add(this)
+  }
+
   /** Function that gets called on region creation after saving (once) */
   protected onCreate() {
     // Hook