improve performance

4 files changed, 24 insertions, 3 deletions

diff --git a/packages/backend/src/core/RelayService.ts b/packages/backend/src/core/RelayService.ts
index 563eeac0f0..3c67e0573f 100644
--- a/packages/backend/src/core/RelayService.ts
+++ b/packages/backend/src/core/RelayService.ts
@@ -9,6 +9,7 @@ import { QueueService } from '@/core/QueueService.js';
 import { CreateSystemUserService } from '@/core/CreateSystemUserService.js';
 import { ApRendererService } from '@/core/remote/activitypub/ApRendererService.js';
 import { DI } from '@/di-symbols.js';
+import { deepClone } from '@/misc/clone.js';
 
 const ACTOR_USERNAME = 'relay.actor' as const;
 
@@ -105,7 +106,7 @@ export class RelayService {
 		}));
 		if (relays.length === 0) return;
 	
-		const copy = structuredClone(activity);
+		const copy = deepClone(activity);
 		if (!copy.to) copy.to = ['https://www.w3.org/ns/activitystreams#Public'];
 	
 		const signed = await this.apRendererService.attachLdSignature(copy, user);
diff --git a/packages/backend/src/core/entities/DriveFileEntityService.ts b/packages/backend/src/core/entities/DriveFileEntityService.ts
index d9430e1497..e0aeb70dfc 100644
--- a/packages/backend/src/core/entities/DriveFileEntityService.ts
+++ b/packages/backend/src/core/entities/DriveFileEntityService.ts
@@ -9,6 +9,7 @@ import { awaitAll } from '@/misc/prelude/await-all.js';
 import type { User } from '@/models/entities/User.js';
 import type { DriveFile } from '@/models/entities/DriveFile.js';
 import { appendQuery, query } from '@/misc/prelude/url.js';
+import { deepClone } from '@/misc/clone.js';
 import { UtilityService } from '../UtilityService.js';
 import { UserEntityService } from './UserEntityService.js';
 import { DriveFolderEntityService } from './DriveFolderEntityService.js';
@@ -55,7 +56,7 @@ export class DriveFileEntityService {
 
 	public getPublicProperties(file: DriveFile): DriveFile['properties'] {
 		if (file.properties.orientation != null) {
-			const properties = structuredClone(file.properties);
+			const properties = deepClone(file.properties);
 			if (file.properties.orientation >= 5) {
 				[properties.width, properties.height] = [properties.height, properties.width];
 			}
diff --git a/packages/backend/src/misc/clone.ts b/packages/backend/src/misc/clone.ts
new file mode 100644
index 0000000000..16fad24129
--- /dev/null
+++ b/packages/backend/src/misc/clone.ts
@@ -0,0 +1,18 @@
+// structredCloneが遅いため
+// SEE: http://var.blog.jp/archives/86038606.html
+
+type Cloneable = string | number | boolean | null | { [key: string]: Cloneable } | Cloneable[];
+
+export function deepClone<T extends Cloneable>(x: T): T {
+	if (typeof x === 'object') {
+		if (x === null) return x;
+		if (Array.isArray(x)) return x.map(deepClone) as T;
+		const obj = {} as Record<string, Cloneable>;
+		for (const [k, v] of Object.entries(x)) {
+			obj[k] = deepClone(v);
+		}
+		return obj as T;
+	} else {
+		return x;
+	}
+}
diff --git a/packages/backend/src/server/web/ClientServerService.ts b/packages/backend/src/server/web/ClientServerService.ts
index 44450245a6..8957a91309 100644
--- a/packages/backend/src/server/web/ClientServerService.ts
+++ b/packages/backend/src/server/web/ClientServerService.ts
@@ -26,6 +26,7 @@ import { GalleryPostEntityService } from '@/core/entities/GalleryPostEntityServi
 import { ClipEntityService } from '@/core/entities/ClipEntityService.js';
 import { ChannelEntityService } from '@/core/entities/ChannelEntityService.js';
 import type { ChannelsRepository, ClipsRepository, GalleryPostsRepository, NotesRepository, PagesRepository, UserProfilesRepository, UsersRepository } from '@/models/index.js';
+import { deepClone } from '@/misc/clone.js';
 import manifest from './manifest.json' assert { type: 'json' };
 import { FeedService } from './FeedService.js';
 import { UrlPreviewService } from './UrlPreviewService.js';
@@ -86,7 +87,7 @@ export class ClientServerService {
 	}
 
 	private async manifestHandler(ctx: Koa.Context) {
-		const res = structuredClone(manifest);
+		const res = deepClone(manifest);
 
 		const instance = await this.metaService.fetch(true);