update backend to the new templates

packages/backend/src/core/DriveService.ts

@@ -767,7 +767,7 @@ export class DriveService {
 
 	@bindThis
 	public async deleteFileSync(file: MiDriveFile, isExpired = false, deleter?: { id: string }) {
-		const promises = [];
+		const promises: Promise<void>[] = [];
 
 		if (file.storedInternal) {
 			promises.push(this.deleteLocalFile(file.accessKey!));

packages/backend/src/core/MfmService.ts

@@ -299,7 +299,7 @@ export class MfmService {
 							(note that the `rp` are to be ignored, they only exist
 							for browsers who don't understand ruby)
 						*/
-						let nonRtNodes = [];
+						let nonRtNodes: ChildNode[] = [];
 						// scan children, ignore `rp`, split on `rt`
 						for (const child of node.childNodes) {
 							if (isText(child)) {

packages/backend/src/core/ReactionsBufferingService.ts

@@ -147,7 +147,7 @@ export class ReactionsBufferingService implements OnApplicationShutdown {
 	// TODO: scanは重い可能性があるので、別途 bufferedNoteIds を直接Redis上に持っておいてもいいかもしれない
 	@bindThis
 	public async bake(): Promise<void> {
-		const bufferedNoteIds = [];
+		const bufferedNoteIds: string[] = [];
 		let cursor = '0';
 		do {
 			// https://github.com/redis/ioredis#transparent-key-prefixing

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

@@ -40,7 +40,7 @@ export class FlashEntityService {
 		// { schema: 'UserDetailed' } すると無限ループするので注意
 		const user = hint?.packedUser ?? await this.userEntityService.pack(flash.user ?? flash.userId, me);
 
-		let isLiked = undefined;
+		let isLiked: boolean | undefined = undefined;
 		if (meId) {
 			isLiked = hint?.likedFlashIds
 				? hint.likedFlashIds.includes(flash.id)

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

@@ -51,8 +51,8 @@ export class MetaEntityService {
 			.getMany();
 
 		// クライアントの手間を減らすためあらかじめJSONに変換しておく
-		let defaultLightTheme = null;
-		let defaultDarkTheme = null;
+		let defaultLightTheme: string | null = null;
+		let defaultDarkTheme: string | null = null;
 		if (instance.defaultLightTheme) {
 			try {
 				defaultLightTheme = JSON.stringify(JSON5.parse(instance.defaultLightTheme));

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

@@ -491,7 +491,7 @@ export class NoteEntityService implements OnModuleInit {
 
 	@bindThis
 	public async packAttachedFiles(fileIds: MiNote['fileIds'], packedFiles: Map<MiNote['fileIds'][number], Packed<'DriveFile'> | null>): Promise<Packed<'DriveFile'>[]> {
-		const missingIds = [];
+		const missingIds: string[] = [];
 		for (const id of fileIds) {
 			if (!packedFiles.has(id)) missingIds.push(id);
 		}

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

@@ -232,7 +232,7 @@ export class NotificationEntityService implements OnModuleInit {
 
 		validNotifications = validNotifications.filter(x => !('noteId' in x) || packedNotes.has(x.noteId));
 
-		const userIds = [];
+		const userIds: string[] = [];
 		for (const notification of validNotifications) {
 			if ('notifierId' in notification) userIds.push(notification.notifierId);
 			if (notification.type === 'reaction:grouped') userIds.push(...notification.reactions.map(x => x.userId));