perf(backend): createdAtをidから取得するように & 無駄なDateインスタンスの生成を避けるように

packages/backend/src/core/entities/AbuseUserReportEntityService.ts

@@ -9,6 +9,7 @@ import type { AbuseUserReportsRepository } from '@/models/_.js';
 import { awaitAll } from '@/misc/prelude/await-all.js';
 import type { MiAbuseUserReport } from '@/models/AbuseUserReport.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 import { UserEntityService } from './UserEntityService.js';
 
 @Injectable()
@@ -18,6 +19,7 @@ export class AbuseUserReportEntityService {
 		private abuseUserReportsRepository: AbuseUserReportsRepository,
 
 		private userEntityService: UserEntityService,
+		private idService: IdService,
 	) {
 	}
 
@@ -29,7 +31,7 @@ export class AbuseUserReportEntityService {
 
 		return await awaitAll({
 			id: report.id,
-			createdAt: report.createdAt.toISOString(),
+			createdAt: this.idService.parse(report.id).date.toISOString(),
 			comment: report.comment,
 			resolved: report.resolved,
 			reporterId: report.reporterId,

packages/backend/src/core/entities/AntennaEntityService.ts

@@ -9,12 +9,15 @@ import type { AntennasRepository } from '@/models/_.js';
 import type { Packed } from '@/misc/json-schema.js';
 import type { MiAntenna } from '@/models/Antenna.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 
 @Injectable()
 export class AntennaEntityService {
 	constructor(
 		@Inject(DI.antennasRepository)
 		private antennasRepository: AntennasRepository,
+
+		private idService: IdService,
 	) {
 	}
 
@@ -26,7 +29,7 @@ export class AntennaEntityService {
 
 		return {
 			id: antenna.id,
-			createdAt: antenna.createdAt.toISOString(),
+			createdAt: this.idService.parse(antenna.id).date.toISOString(),
 			name: antenna.name,
 			keywords: antenna.keywords,
 			excludeKeywords: antenna.excludeKeywords,

packages/backend/src/core/entities/BlockingEntityService.ts

@@ -11,6 +11,7 @@ import type { Packed } from '@/misc/json-schema.js';
 import type { MiBlocking } from '@/models/Blocking.js';
 import type { MiUser } from '@/models/User.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 import { UserEntityService } from './UserEntityService.js';
 
 @Injectable()
@@ -20,6 +21,7 @@ export class BlockingEntityService {
 		private blockingsRepository: BlockingsRepository,
 
 		private userEntityService: UserEntityService,
+		private idService: IdService,
 	) {
 	}
 
@@ -32,7 +34,7 @@ export class BlockingEntityService {
 
 		return await awaitAll({
 			id: blocking.id,
-			createdAt: blocking.createdAt.toISOString(),
+			createdAt: this.idService.parse(blocking.id).date.toISOString(),
 			blockeeId: blocking.blockeeId,
 			blockee: this.userEntityService.pack(blocking.blockeeId, me, {
 				detail: true,

packages/backend/src/core/entities/ChannelEntityService.ts

@@ -11,6 +11,7 @@ import type { } from '@/models/Blocking.js';
 import type { MiUser } from '@/models/User.js';
 import type { MiChannel } from '@/models/Channel.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 import { DriveFileEntityService } from './DriveFileEntityService.js';
 import { NoteEntityService } from './NoteEntityService.js';
 import { In } from 'typeorm';
@@ -38,6 +39,7 @@ export class ChannelEntityService {
 
 		private noteEntityService: NoteEntityService,
 		private driveFileEntityService: DriveFileEntityService,
+		private idService: IdService,
 	) {
 	}
 
@@ -81,7 +83,7 @@ export class ChannelEntityService {
 
 		return {
 			id: channel.id,
-			createdAt: channel.createdAt.toISOString(),
+			createdAt: this.idService.parse(channel.id).date.toISOString(),
 			lastNotedAt: channel.lastNotedAt ? channel.lastNotedAt.toISOString() : null,
 			name: channel.name,
 			description: channel.description,

packages/backend/src/core/entities/ClipEntityService.ts

@@ -11,6 +11,7 @@ import type { Packed } from '@/misc/json-schema.js';
 import type { } from '@/models/Blocking.js';
 import type { MiClip } from '@/models/Clip.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 import { UserEntityService } from './UserEntityService.js';
 
 @Injectable()
@@ -23,6 +24,7 @@ export class ClipEntityService {
 		private clipFavoritesRepository: ClipFavoritesRepository,
 
 		private userEntityService: UserEntityService,
+		private idService: IdService,
 	) {
 	}
 
@@ -36,7 +38,7 @@ export class ClipEntityService {
 
 		return await awaitAll({
 			id: clip.id,
-			createdAt: clip.createdAt.toISOString(),
+			createdAt: this.idService.parse(clip.id).date.toISOString(),
 			lastClippedAt: clip.lastClippedAt ? clip.lastClippedAt.toISOString() : null,
 			userId: clip.userId,
 			user: this.userEntityService.pack(clip.user ?? clip.userId),

packages/backend/src/core/entities/DriveFileEntityService.ts

@@ -17,6 +17,7 @@ import { deepClone } from '@/misc/clone.js';
 import { bindThis } from '@/decorators.js';
 import { isMimeImage } from '@/misc/is-mime-image.js';
 import { isNotNull } from '@/misc/is-not-null.js';
+import { IdService } from '@/core/IdService.js';
 import { UtilityService } from '../UtilityService.js';
 import { VideoProcessingService } from '../VideoProcessingService.js';
 import { UserEntityService } from './UserEntityService.js';
@@ -44,6 +45,7 @@ export class DriveFileEntityService {
 		private utilityService: UtilityService,
 		private driveFolderEntityService: DriveFolderEntityService,
 		private videoProcessingService: VideoProcessingService,
+		private idService: IdService,
 	) {
 	}
 
@@ -196,7 +198,7 @@ export class DriveFileEntityService {
 
 		return await awaitAll<Packed<'DriveFile'>>({
 			id: file.id,
-			createdAt: file.createdAt.toISOString(),
+			createdAt: this.idService.parse(file.id).date.toISOString(),
 			name: file.name,
 			type: file.type,
 			md5: file.md5,
@@ -231,7 +233,7 @@ export class DriveFileEntityService {
 
 		return await awaitAll<Packed<'DriveFile'>>({
 			id: file.id,
-			createdAt: file.createdAt.toISOString(),
+			createdAt: this.idService.parse(file.id).date.toISOString(),
 			name: file.name,
 			type: file.type,
 			md5: file.md5,

packages/backend/src/core/entities/DriveFolderEntityService.ts

@@ -11,6 +11,7 @@ import type { Packed } from '@/misc/json-schema.js';
 import type { } from '@/models/Blocking.js';
 import type { MiDriveFolder } from '@/models/DriveFolder.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 
 @Injectable()
 export class DriveFolderEntityService {
@@ -20,6 +21,8 @@ export class DriveFolderEntityService {
 
 		@Inject(DI.driveFilesRepository)
 		private driveFilesRepository: DriveFilesRepository,
+
+		private idService: IdService,
 	) {
 	}
 
@@ -38,7 +41,7 @@ export class DriveFolderEntityService {
 
 		return await awaitAll({
 			id: folder.id,
-			createdAt: folder.createdAt.toISOString(),
+			createdAt: this.idService.parse(folder.id).date.toISOString(),
 			name: folder.name,
 			parentId: folder.parentId,
 

packages/backend/src/core/entities/FlashEntityService.ts

@@ -12,6 +12,7 @@ import type { } from '@/models/Blocking.js';
 import type { MiUser } from '@/models/User.js';
 import type { MiFlash } from '@/models/Flash.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 import { UserEntityService } from './UserEntityService.js';
 
 @Injectable()
@@ -24,6 +25,7 @@ export class FlashEntityService {
 		private flashLikesRepository: FlashLikesRepository,
 
 		private userEntityService: UserEntityService,
+		private idService: IdService,
 	) {
 	}
 
@@ -37,7 +39,7 @@ export class FlashEntityService {
 
 		return await awaitAll({
 			id: flash.id,
-			createdAt: flash.createdAt.toISOString(),
+			createdAt: this.idService.parse(flash.id).date.toISOString(),
 			updatedAt: flash.updatedAt.toISOString(),
 			userId: flash.userId,
 			user: this.userEntityService.pack(flash.user ?? flash.userId, me), // { detail: true } すると無限ループするので注意

packages/backend/src/core/entities/FollowingEntityService.ts

@@ -12,6 +12,7 @@ import type { } from '@/models/Blocking.js';
 import type { MiUser } from '@/models/User.js';
 import type { MiFollowing } from '@/models/Following.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 import { UserEntityService } from './UserEntityService.js';
 
 type LocalFollowerFollowing = MiFollowing & {
@@ -45,6 +46,7 @@ export class FollowingEntityService {
 		private followingsRepository: FollowingsRepository,
 
 		private userEntityService: UserEntityService,
+		private idService: IdService,
 	) {
 	}
 
@@ -83,7 +85,7 @@ export class FollowingEntityService {
 
 		return await awaitAll({
 			id: following.id,
-			createdAt: following.createdAt.toISOString(),
+			createdAt: this.idService.parse(following.id).date.toISOString(),
 			followeeId: following.followeeId,
 			followerId: following.followerId,
 			followee: opts.populateFollowee ? this.userEntityService.pack(following.followee ?? following.followeeId, me, {

packages/backend/src/core/entities/GalleryPostEntityService.ts

@@ -12,6 +12,7 @@ import type { } from '@/models/Blocking.js';
 import type { MiUser } from '@/models/User.js';
 import type { MiGalleryPost } from '@/models/GalleryPost.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 import { UserEntityService } from './UserEntityService.js';
 import { DriveFileEntityService } from './DriveFileEntityService.js';
 
@@ -26,6 +27,7 @@ export class GalleryPostEntityService {
 
 		private userEntityService: UserEntityService,
 		private driveFileEntityService: DriveFileEntityService,
+		private idService: IdService,
 	) {
 	}
 
@@ -39,7 +41,7 @@ export class GalleryPostEntityService {
 
 		return await awaitAll({
 			id: post.id,
-			createdAt: post.createdAt.toISOString(),
+			createdAt: this.idService.parse(post.id).date.toISOString(),
 			updatedAt: post.updatedAt.toISOString(),
 			userId: post.userId,
 			user: this.userEntityService.pack(post.user ?? post.userId, me),

packages/backend/src/core/entities/InviteCodeEntityService.ts

@@ -11,6 +11,7 @@ import type { Packed } from '@/misc/json-schema.js';
 import type { MiUser } from '@/models/User.js';
 import type { MiRegistrationTicket } from '@/models/RegistrationTicket.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 import { UserEntityService } from './UserEntityService.js';
 
 @Injectable()
@@ -20,6 +21,7 @@ export class InviteCodeEntityService {
 		private registrationTicketsRepository: RegistrationTicketsRepository,
 
 		private userEntityService: UserEntityService,
+		private idService: IdService,
 	) {
 	}
 
@@ -39,7 +41,7 @@ export class InviteCodeEntityService {
 			id: target.id,
 			code: target.code,
 			expiresAt: target.expiresAt ? target.expiresAt.toISOString() : null,
-			createdAt: target.createdAt.toISOString(),
+			createdAt: this.idService.parse(target.id).date.toISOString(),
 			createdBy: target.createdBy ? await this.userEntityService.pack(target.createdBy, me) : null,
 			usedBy: target.usedBy ? await this.userEntityService.pack(target.usedBy, me) : null,
 			usedAt: target.usedAt ? target.usedAt.toISOString() : null,

packages/backend/src/core/entities/ModerationLogEntityService.ts

@@ -10,6 +10,7 @@ import { awaitAll } from '@/misc/prelude/await-all.js';
 import type { } from '@/models/Blocking.js';
 import type { MiModerationLog } from '@/models/ModerationLog.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 import { UserEntityService } from './UserEntityService.js';
 
 @Injectable()
@@ -19,6 +20,7 @@ export class ModerationLogEntityService {
 		private moderationLogsRepository: ModerationLogsRepository,
 
 		private userEntityService: UserEntityService,
+		private idService: IdService,
 	) {
 	}
 
@@ -30,7 +32,7 @@ export class ModerationLogEntityService {
 
 		return await awaitAll({
 			id: log.id,
-			createdAt: log.createdAt.toISOString(),
+			createdAt: this.idService.parse(log.id).date.toISOString(),
 			type: log.type,
 			info: log.info,
 			userId: log.userId,

packages/backend/src/core/entities/MutingEntityService.ts

@@ -12,6 +12,7 @@ import type { } from '@/models/Blocking.js';
 import type { MiUser } from '@/models/User.js';
 import type { MiMuting } from '@/models/Muting.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 import { UserEntityService } from './UserEntityService.js';
 
 @Injectable()
@@ -21,6 +22,7 @@ export class MutingEntityService {
 		private mutingsRepository: MutingsRepository,
 
 		private userEntityService: UserEntityService,
+		private idService: IdService,
 	) {
 	}
 
@@ -33,7 +35,7 @@ export class MutingEntityService {
 
 		return await awaitAll({
 			id: muting.id,
-			createdAt: muting.createdAt.toISOString(),
+			createdAt: this.idService.parse(muting.id).date.toISOString(),
 			expiresAt: muting.expiresAt ? muting.expiresAt.toISOString() : null,
 			muteeId: muting.muteeId,
 			mutee: this.userEntityService.pack(muting.muteeId, me, {

packages/backend/src/core/entities/NoteEntityService.ts

@@ -310,7 +310,7 @@ export class NoteEntityService implements OnModuleInit {
 
 		const packed: Packed<'Note'> = await awaitAll({
 			id: note.id,
-			createdAt: note.createdAt.toISOString(),
+			createdAt: this.idService.parse(note.id).date.toISOString(),
 			userId: note.userId,
 			user: this.userEntityService.pack(note.user ?? note.userId, me, {
 				detail: false,
@@ -386,7 +386,8 @@ export class NoteEntityService implements OnModuleInit {
 		if (meId) {
 			const renoteIds = notes.filter(n => n.renoteId != null).map(n => n.renoteId!);
 			// パフォーマンスのためノートが作成されてから2秒以上経っていない場合はリアクションを取得しない
-			const targets = [...notes.filter(n => n.createdAt.getTime() + 2000 < Date.now()).map(n => n.id), ...renoteIds];
+			const oldId = this.idService.gen(Date.now() - 2000);
+			const targets = [...notes.filter(n => n.id < oldId).map(n => n.id), ...renoteIds];
 			const myReactions = await this.noteReactionsRepository.findBy({
 				userId: meId,
 				noteId: In(targets),

packages/backend/src/core/entities/NoteFavoriteEntityService.ts

@@ -10,6 +10,7 @@ import type { } from '@/models/Blocking.js';
 import type { MiUser } from '@/models/User.js';
 import type { MiNoteFavorite } from '@/models/NoteFavorite.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 import { NoteEntityService } from './NoteEntityService.js';
 
 @Injectable()
@@ -19,6 +20,7 @@ export class NoteFavoriteEntityService {
 		private noteFavoritesRepository: NoteFavoritesRepository,
 
 		private noteEntityService: NoteEntityService,
+		private idService: IdService,
 	) {
 	}
 
@@ -31,7 +33,7 @@ export class NoteFavoriteEntityService {
 
 		return {
 			id: favorite.id,
-			createdAt: favorite.createdAt.toISOString(),
+			createdAt: this.idService.parse(favorite.id).date.toISOString(),
 			noteId: favorite.noteId,
 			note: await this.noteEntityService.pack(favorite.note ?? favorite.noteId, me),
 		};

packages/backend/src/core/entities/NoteReactionEntityService.ts

@@ -8,6 +8,7 @@ import { DI } from '@/di-symbols.js';
 import type { NoteReactionsRepository } from '@/models/_.js';
 import type { Packed } from '@/misc/json-schema.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 import type { OnModuleInit } from '@nestjs/common';
 import type { } from '@/models/Blocking.js';
 import type { MiUser } from '@/models/User.js';
@@ -22,6 +23,7 @@ export class NoteReactionEntityService implements OnModuleInit {
 	private userEntityService: UserEntityService;
 	private noteEntityService: NoteEntityService;
 	private reactionService: ReactionService;
+	private idService: IdService;
 
 	constructor(
 		private moduleRef: ModuleRef,
@@ -32,6 +34,7 @@ export class NoteReactionEntityService implements OnModuleInit {
 		//private userEntityService: UserEntityService,
 		//private noteEntityService: NoteEntityService,
 		//private reactionService: ReactionService,
+		//private idService: IdService,
 	) {
 	}
 
@@ -39,6 +42,7 @@ export class NoteReactionEntityService implements OnModuleInit {
 		this.userEntityService = this.moduleRef.get('UserEntityService');
 		this.noteEntityService = this.moduleRef.get('NoteEntityService');
 		this.reactionService = this.moduleRef.get('ReactionService');
+		this.idService = this.moduleRef.get('IdService');
 	}
 
 	@bindThis
@@ -57,7 +61,7 @@ export class NoteReactionEntityService implements OnModuleInit {
 
 		return {
 			id: reaction.id,
-			createdAt: reaction.createdAt.toISOString(),
+			createdAt: this.idService.parse(reaction.id).date.toISOString(),
 			user: await this.userEntityService.pack(reaction.user ?? reaction.userId, me),
 			type: this.reactionService.convertLegacyReaction(reaction.reaction),
 			...(opts.withNote ? {

packages/backend/src/core/entities/PageEntityService.ts

@@ -13,6 +13,7 @@ import type { MiUser } from '@/models/User.js';
 import type { MiPage } from '@/models/Page.js';
 import type { MiDriveFile } from '@/models/DriveFile.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 import { UserEntityService } from './UserEntityService.js';
 import { DriveFileEntityService } from './DriveFileEntityService.js';
 
@@ -30,6 +31,7 @@ export class PageEntityService {
 
 		private userEntityService: UserEntityService,
 		private driveFileEntityService: DriveFileEntityService,
+		private idService: IdService,
 	) {
 	}
 
@@ -85,7 +87,7 @@ export class PageEntityService {
 
 		return await awaitAll({
 			id: page.id,
-			createdAt: page.createdAt.toISOString(),
+			createdAt: this.idService.parse(page.id).date.toISOString(),
 			updatedAt: page.updatedAt.toISOString(),
 			userId: page.userId,
 			user: this.userEntityService.pack(page.user ?? page.userId, me), // { detail: true } すると無限ループするので注意

packages/backend/src/core/entities/RenoteMutingEntityService.ts

@@ -12,6 +12,7 @@ import type { } from '@/models/Blocking.js';
 import type { MiUser } from '@/models/User.js';
 import type { MiRenoteMuting } from '@/models/RenoteMuting.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 import { UserEntityService } from './UserEntityService.js';
 
 @Injectable()
@@ -21,6 +22,7 @@ export class RenoteMutingEntityService {
 		private renoteMutingsRepository: RenoteMutingsRepository,
 
 		private userEntityService: UserEntityService,
+		private idService: IdService,
 	) {
 	}
 
@@ -33,7 +35,7 @@ export class RenoteMutingEntityService {
 
 		return await awaitAll({
 			id: muting.id,
-			createdAt: muting.createdAt.toISOString(),
+			createdAt: this.idService.parse(muting.id).date.toISOString(),
 			muteeId: muting.muteeId,
 			mutee: this.userEntityService.pack(muting.muteeId, me, {
 				detail: true,

packages/backend/src/core/entities/RoleEntityService.ts

@@ -12,6 +12,7 @@ import type { MiUser } from '@/models/User.js';
 import type { MiRole } from '@/models/Role.js';
 import { bindThis } from '@/decorators.js';
 import { DEFAULT_POLICIES } from '@/core/RoleService.js';
+import { IdService } from '@/core/IdService.js';
 
 @Injectable()
 export class RoleEntityService {
@@ -21,6 +22,8 @@ export class RoleEntityService {
 
 		@Inject(DI.roleAssignmentsRepository)
 		private roleAssignmentsRepository: RoleAssignmentsRepository,
+
+		private idService: IdService,
 	) {
 	}
 
@@ -51,7 +54,7 @@ export class RoleEntityService {
 
 		return await awaitAll({
 			id: role.id,
-			createdAt: role.createdAt.toISOString(),
+			createdAt: this.idService.parse(role.id).date.toISOString(),
 			updatedAt: role.updatedAt.toISOString(),
 			name: role.name,
 			description: role.description,

packages/backend/src/core/entities/UserEntityService.ts

@@ -20,6 +20,7 @@ import { bindThis } from '@/decorators.js';
 import { RoleService } from '@/core/RoleService.js';
 import { ApPersonService } from '@/core/activitypub/models/ApPersonService.js';
 import { FederatedInstanceService } from '@/core/FederatedInstanceService.js';
+import { IdService } from '@/core/IdService.js';
 import type { OnModuleInit } from '@nestjs/common';
 import type { AnnouncementService } from '../AnnouncementService.js';
 import type { CustomEmojiService } from '../CustomEmojiService.js';
@@ -60,6 +61,7 @@ export class UserEntityService implements OnModuleInit {
 	private announcementService: AnnouncementService;
 	private roleService: RoleService;
 	private federatedInstanceService: FederatedInstanceService;
+	private idService: IdService;
 
 	constructor(
 		private moduleRef: ModuleRef,
@@ -111,13 +113,6 @@ export class UserEntityService implements OnModuleInit {
 
 		@Inject(DI.userMemosRepository)
 		private userMemosRepository: UserMemoRepository,
-
-		//private noteEntityService: NoteEntityService,
-		//private driveFileEntityService: DriveFileEntityService,
-		//private pageEntityService: PageEntityService,
-		//private customEmojiService: CustomEmojiService,
-		//private antennaService: AntennaService,
-		//private roleService: RoleService,
 	) {
 	}
 
@@ -130,6 +125,7 @@ export class UserEntityService implements OnModuleInit {
 		this.announcementService = this.moduleRef.get('AnnouncementService');
 		this.roleService = this.moduleRef.get('RoleService');
 		this.federatedInstanceService = this.moduleRef.get('FederatedInstanceService');
+		this.idService = this.moduleRef.get('IdService');
 	}
 
 	//#region Validators
@@ -364,7 +360,7 @@ export class UserEntityService implements OnModuleInit {
 					? Promise.all(user.alsoKnownAs.map(uri => this.apPersonService.fetchPerson(uri).then(user => user?.id).catch(() => null)))
 						.then(xs => xs.length === 0 ? null : xs.filter(x => x != null) as string[])
 					: null,
-				createdAt: user.createdAt.toISOString(),
+				createdAt: this.idService.parse(user.id).date.toISOString(),
 				updatedAt: user.updatedAt ? user.updatedAt.toISOString() : null,
 				lastFetchedAt: user.lastFetchedAt ? user.lastFetchedAt.toISOString() : null,
 				bannerUrl: user.bannerUrl,

packages/backend/src/core/entities/UserListEntityService.ts

@@ -10,6 +10,7 @@ import type { Packed } from '@/misc/json-schema.js';
 import type { } from '@/models/Blocking.js';
 import type { MiUserList } from '@/models/UserList.js';
 import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
 import { UserEntityService } from './UserEntityService.js';
 
 @Injectable()
@@ -22,6 +23,7 @@ export class UserListEntityService {
 		private userListMembershipsRepository: UserListMembershipsRepository,
 
 		private userEntityService: UserEntityService,
+		private idService: IdService,
 	) {
 	}
 
@@ -37,7 +39,7 @@ export class UserListEntityService {
 
 		return {
 			id: userList.id,
-			createdAt: userList.createdAt.toISOString(),
+			createdAt: this.idService.parse(userList.id).date.toISOString(),
 			name: userList.name,
 			userIds: users.map(x => x.userId),
 			isPublic: userList.isPublic,
@@ -50,7 +52,7 @@ export class UserListEntityService {
 	) {
 		return Promise.all(memberships.map(async x => ({
 			id: x.id,
-			createdAt: x.createdAt.toISOString(),
+			createdAt: this.idService.parse(x.id).date.toISOString(),
 			userId: x.userId,
 			user: await this.userEntityService.pack(x.userId),
 			withReplies: x.withReplies,