refactor: Migrate config schema from Zod v3 to Zod v4 (#2357)

src/ha/browse-media/types.ts

@@ -7,36 +7,24 @@ export interface BrowseMediaMetadata {
   endDate?: Date;
   what?: string[];
 }
-// Recursive type, cannot use type interference:
-// See: https://github.com/colinhacks/zod#recursive-types
-//
+
 // Server side data-type defined here: https://github.com/home-assistant/core/blob/dev/homeassistant/components/media_player/browse_media.py#L90
+export const browseMediaSchema = z.object({
+  title: z.string(),
+  media_class: z.string(),
+  media_content_type: z.string(),
+  media_content_id: z.string(),
+  can_play: z.boolean(),
+  can_expand: z.boolean(),
+  children_media_class: z.string().nullable().optional(),
+  thumbnail: z.string().nullable(),
 
-export interface BrowseMedia {
-  title: string;
-  media_class: string;
-  media_content_type: string;
-  media_content_id: string;
-  can_play: boolean;
-  can_expand: boolean;
-  children_media_class?: string | null;
-  thumbnail: string | null;
-  children?: BrowseMedia[] | null;
-}
-
-export const browseMediaSchema: z.ZodSchema<BrowseMedia> = z.lazy(() =>
-  z.object({
-    title: z.string(),
-    media_class: z.string(),
-    media_content_type: z.string(),
-    media_content_id: z.string(),
-    can_play: z.boolean(),
-    can_expand: z.boolean(),
-    children_media_class: z.string().nullable().optional(),
-    thumbnail: z.string().nullable(),
-    children: z.array(browseMediaSchema).nullable().optional(),
-  }),
-);
+  get children() {
+    // Recursive schema.
+    return z.array(browseMediaSchema).nullable().optional();
+  },
+});
+export type BrowseMedia = z.infer<typeof browseMediaSchema>;
 
 export interface RichBrowseMedia<M> extends BrowseMedia {
   _metadata?: M;