fix code quality issues

packages/backend/src/core/ReversiService.ts

@@ -22,12 +22,12 @@ import { IdService } from '@/core/IdService.js';
 import { NotificationService } from '@/core/NotificationService.js';
 import { Serialized } from '@/types.js';
 import { ReversiGameEntityService } from './entities/ReversiGameEntityService.js';
-import type { OnApplicationShutdown, OnModuleInit } from '@nestjs/common';
+import type { OnModuleInit } from '@nestjs/common';
 
 const MATCHING_TIMEOUT_MS = 1000 * 15; // 15sec
 
 @Injectable()
-export class ReversiService implements OnApplicationShutdown, OnModuleInit {
+export class ReversiService implements OnModuleInit {
 	private notificationService: NotificationService;
 
 	constructor(
@@ -543,13 +543,4 @@ export class ReversiService implements OnApplicationShutdown, OnModuleInit {
 			return null;
 		}
 	}
-
-	@bindThis
-	public dispose(): void {
-	}
-
-	@bindThis
-	public onApplicationShutdown(signal?: string | undefined): void {
-		this.dispose();
-	}
 }

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

@@ -38,8 +38,8 @@ export class ReversiGameEntityService {
 		return await awaitAll({
 			id: game.id,
 			createdAt: game.createdAt.toISOString(),
-			startedAt: game.startedAt && game.startedAt.toISOString(),
-			endedAt: game.endedAt && game.endedAt.toISOString(),
+			startedAt: game.startedAt?.toISOString() ?? null,
+			endedAt: game.endedAt?.toISOString() ?? null,
 			isStarted: game.isStarted,
 			isEnded: game.isEnded,
 			form1: game.form1,
@@ -90,8 +90,8 @@ export class ReversiGameEntityService {
 		return await awaitAll({
 			id: game.id,
 			createdAt: game.createdAt.toISOString(),
-			startedAt: game.startedAt && game.startedAt.toISOString(),
-			endedAt: game.endedAt && game.endedAt.toISOString(),
+			startedAt: game.startedAt?.toISOString() ?? null,
+			endedAt: game.endedAt?.toISOString() ?? null,
 			isStarted: game.isStarted,
 			isEnded: game.isEnded,
 			user1Id: game.user1Id,

packages/backend/src/server/api/endpoints/reversi/cancel-match.ts

@@ -35,7 +35,6 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		super(meta, paramDef, async (ps, me) => {
 			if (ps.userId) {
 				await this.reversiService.matchSpecificUserCancel(me, ps.userId);
-				return;
 			} else {
 				await this.reversiService.matchAnyUserCancel(me);
 			}

packages/backend/src/server/api/endpoints/reversi/invitations.ts

@@ -3,9 +3,8 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Inject, Injectable } from '@nestjs/common';
+import { Injectable } from '@nestjs/common';
 import { Endpoint } from '@/server/api/endpoint-base.js';
-import { DI } from '@/di-symbols.js';
 import { UserEntityService } from '@/core/entities/UserEntityService.js';
 import { ReversiService } from '@/core/ReversiService.js';
 

packages/backend/src/server/api/stream/channels/reversi.ts

@@ -13,13 +13,6 @@ class ReversiChannel extends Channel {
 	public static requireCredential = true as const;
 	public static kind = 'read:account';
 
-	constructor(
-		id: string,
-		connection: Channel['connection'],
-	) {
-		super(id, connection);
-	}
-
 	@bindThis
 	public async init(params: any) {
 		this.subscriber.on(`reversiStream:${this.user!.id}`, this.send);
@@ -38,10 +31,6 @@ export class ReversiChannelService implements MiChannelService<true> {
 	public readonly requireCredential = ReversiChannel.requireCredential;
 	public readonly kind = ReversiChannel.kind;
 
-	constructor(
-	) {
-	}
-
 	@bindThis
 	public create(id: string, connection: Channel['connection']): ReversiChannel {
 		return new ReversiChannel(