update deps (#15311)

* wip

* bump misskey-dev/eslint-plugin

* lint fixes (backend)

* lint fixes (frontend)

* lint fixes (frontend-embed)

* rollback nsfwjs to 4.2.0

ref: infinitered/nsfwjs#904

* rollback openapi-typescript to v6

v7でOpenAPIのバリデーションが入るようになった関係でスコープ外での変更が避けられないため一時的に戻した

* lint fixes (misskey-js)

* temporarily disable errored lint rule (frontend-shared)

* fix lint

* temporarily ignore errored file for lint (frontend-shared)

* rollback simplewebauthn/server to 12.0.0

v13 contains breaking changes that require some decision making

* lint fixes (frontend-shared)

* build misskey-js with types

* fix(backend): migrate simplewebauthn/server to v12

* fix(misskey-js/autogen): ignore indent rules to generate consistent output

* attempt to fix test

changes due to capricorn86/happy-dom#1617 (XMLSerializer now produces valid XML)

* attempt to fix test

changes due to capricorn86/happy-dom#1617 (XMLSerializer now produces valid XML)

* fix test

* fix test

* fix test

* Apply suggestions from code review

Co-authored-by: anatawa12 <anatawa12@icloud.com>

* bump summaly to v5.2.0

* update tabler-icons to v3.30.0-based

---------

Co-authored-by: かっこかり <67428053+kakkokari-gtyih@users.noreply.github.com>
Co-authored-by: anatawa12 <anatawa12@icloud.com>

20 files changed, 92 insertions, 88 deletions

diff --git a/packages/backend/package.json b/packages/backend/package.json
index 757912755a..d6d87c54ae 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -69,28 +69,28 @@
 	"dependencies": {
 		"@aws-sdk/client-s3": "3.620.0",
 		"@aws-sdk/lib-storage": "3.620.0",
-		"@bull-board/api": "6.5.0",
-		"@bull-board/fastify": "6.5.0",
-		"@bull-board/ui": "6.5.0",
+		"@bull-board/api": "6.7.0",
+		"@bull-board/fastify": "6.7.0",
+		"@bull-board/ui": "6.7.0",
 		"@discordapp/twemoji": "15.1.0",
-		"@fastify/accepts": "5.0.1",
-		"@fastify/cookie": "11.0.1",
-		"@fastify/cors": "10.0.1",
-		"@fastify/express": "4.0.1",
+		"@fastify/accepts": "5.0.2",
+		"@fastify/cookie": "11.0.2",
+		"@fastify/cors": "10.0.2",
+		"@fastify/express": "4.0.2",
 		"@fastify/http-proxy": "10.0.1",
-		"@fastify/multipart": "9.0.1",
-		"@fastify/static": "8.0.2",
-		"@fastify/view": "10.0.1",
+		"@fastify/multipart": "9.0.2",
+		"@fastify/static": "8.0.4",
+		"@fastify/view": "10.0.2",
 		"@misskey-dev/sharp-read-bmp": "1.2.0",
-		"@misskey-dev/summaly": "5.1.0",
-		"@napi-rs/canvas": "0.1.56",
-		"@nestjs/common": "10.4.7",
-		"@nestjs/core": "10.4.7",
-		"@nestjs/testing": "10.4.7",
+		"@misskey-dev/summaly": "5.2.0",
+		"@napi-rs/canvas": "0.1.65",
+		"@nestjs/common": "11.0.1",
+		"@nestjs/core": "11.0.1",
+		"@nestjs/testing": "11.0.1",
 		"@peertube/http-signature": "1.7.0",
-		"@sentry/node": "8.38.0",
-		"@sentry/profiling-node": "8.38.0",
-		"@simplewebauthn/server": "10.0.1",
+		"@sentry/node": "8.50.0",
+		"@sentry/profiling-node": "8.50.0",
+		"@simplewebauthn/server": "12.0.0",
 		"@sinonjs/fake-timers": "11.2.2",
 		"@smithy/node-http-handler": "2.5.0",
 		"@swc/cli": "0.3.12",
@@ -103,10 +103,10 @@
 		"bcryptjs": "2.4.3",
 		"blurhash": "2.0.5",
 		"body-parser": "1.20.3",
-		"bullmq": "5.26.1",
+		"bullmq": "5.34.10",
 		"cacheable-lookup": "7.0.0",
 		"cbor": "9.0.2",
-		"chalk": "5.3.0",
+		"chalk": "5.4.1",
 		"chalk-template": "1.1.0",
 		"chokidar": "3.6.0",
 		"cli-highlight": "2.1.11",
@@ -114,35 +114,35 @@
 		"content-disposition": "0.5.4",
 		"date-fns": "2.30.0",
 		"deep-email-validator": "0.1.21",
-		"fastify": "5.0.0",
+		"fastify": "5.2.1",
 		"fastify-raw-body": "5.0.0",
 		"feed": "4.2.2",
 		"file-type": "19.6.0",
 		"fluent-ffmpeg": "2.1.3",
 		"form-data": "4.0.1",
-		"got": "14.4.4",
-		"happy-dom": "15.11.4",
+		"got": "14.4.5",
+		"happy-dom": "16.6.0",
 		"hpagent": "1.2.0",
 		"htmlescape": "1.1.1",
 		"http-link-header": "1.1.3",
-		"ioredis": "5.4.1",
+		"ioredis": "5.4.2",
 		"ip-cidr": "4.0.2",
 		"ipaddr.js": "2.2.0",
 		"is-svg": "5.1.0",
 		"js-yaml": "4.1.0",
-		"jsdom": "24.1.1",
+		"jsdom": "26.0.0",
 		"json5": "2.2.3",
-		"jsonld": "8.3.2",
+		"jsonld": "8.3.3",
 		"jsrsasign": "11.1.0",
 		"juice": "11.0.0",
-		"meilisearch": "0.45.0",
+		"meilisearch": "0.48.2",
 		"mfm-js": "0.24.0",
 		"microformats-parser": "2.0.2",
 		"mime-types": "2.1.35",
 		"misskey-js": "workspace:*",
 		"misskey-reversi": "workspace:*",
 		"ms": "3.0.0-canary.1",
-		"nanoid": "5.0.8",
+		"nanoid": "5.0.9",
 		"nested-property": "4.0.0",
 		"node-fetch": "3.3.2",
 		"nodemailer": "6.9.16",
@@ -151,7 +151,7 @@
 		"oauth2orize": "1.12.0",
 		"oauth2orize-pkce": "0.1.2",
 		"os-utils": "0.0.14",
-		"otpauth": "9.3.4",
+		"otpauth": "9.3.6",
 		"parse5": "7.2.1",
 		"pg": "8.13.1",
 		"pkce-challenge": "4.1.0",
@@ -167,19 +167,19 @@
 		"rename": "1.0.4",
 		"rss-parser": "3.13.0",
 		"rxjs": "7.8.1",
-		"sanitize-html": "2.13.1",
-		"secure-json-parse": "2.7.0",
+		"sanitize-html": "2.14.0",
+		"secure-json-parse": "3.0.2",
 		"sharp": "0.33.5",
 		"slacc": "0.0.10",
 		"strict-event-emitter-types": "2.0.0",
 		"stringz": "2.1.0",
-		"systeminformation": "5.23.5",
+		"systeminformation": "5.25.11",
 		"tinycolor2": "1.6.0",
 		"tmp": "0.2.3",
 		"tsc-alias": "1.8.10",
 		"tsconfig-paths": "4.2.0",
 		"typeorm": "0.3.20",
-		"typescript": "5.6.3",
+		"typescript": "5.7.3",
 		"ulid": "2.3.0",
 		"vary": "1.1.2",
 		"web-push": "3.6.7",
@@ -189,7 +189,7 @@
 	"devDependencies": {
 		"@jest/globals": "29.7.0",
 		"@nestjs/platform-express": "10.4.7",
-		"@simplewebauthn/types": "10.0.0",
+		"@simplewebauthn/types": "12.0.0",
 		"@swc/jest": "0.2.37",
 		"@types/accepts": "1.3.7",
 		"@types/archiver": "6.0.3",
@@ -204,11 +204,11 @@
 		"@types/js-yaml": "4.0.9",
 		"@types/jsdom": "21.1.7",
 		"@types/jsonld": "1.5.15",
-		"@types/jsrsasign": "10.5.14",
+		"@types/jsrsasign": "10.5.15",
 		"@types/mime-types": "2.1.4",
 		"@types/ms": "0.7.34",
-		"@types/node": "22.9.0",
-		"@types/nodemailer": "6.4.16",
+		"@types/node": "22.10.7",
+		"@types/nodemailer": "6.4.17",
 		"@types/oauth": "0.9.6",
 		"@types/oauth2orize": "1.11.5",
 		"@types/oauth2orize-pkce": "0.1.2",
@@ -227,16 +227,16 @@
 		"@types/vary": "1.1.3",
 		"@types/web-push": "3.6.4",
 		"@types/ws": "8.5.13",
-		"@typescript-eslint/eslint-plugin": "7.17.0",
-		"@typescript-eslint/parser": "7.17.0",
+		"@typescript-eslint/eslint-plugin": "8.20.0",
+		"@typescript-eslint/parser": "8.20.0",
 		"aws-sdk-client-mock": "4.0.1",
 		"cross-env": "7.0.3",
-		"eslint-plugin-import": "2.30.0",
+		"eslint-plugin-import": "2.31.0",
 		"execa": "8.0.1",
 		"fkill": "9.0.0",
 		"jest": "29.7.0",
 		"jest-mock": "29.7.0",
-		"nodemon": "3.1.7",
+		"nodemon": "3.1.9",
 		"pid-port": "1.0.0",
 		"simple-oauth2": "5.1.0"
 	}
diff --git a/packages/backend/src/config.ts b/packages/backend/src/config.ts
index c0b1484804..d5fd2ba558 100644
--- a/packages/backend/src/config.ts
+++ b/packages/backend/src/config.ts
@@ -105,8 +105,8 @@ type Source = {
 
 	logging?: {
 		sql?: {
-			disableQueryTruncation? : boolean,
-			enableQueryParamLogging? : boolean,
+			disableQueryTruncation?: boolean,
+			enableQueryParamLogging?: boolean,
 		}
 	}
 };
@@ -166,8 +166,8 @@ export type Config = {
 	signToActivityPubGet: boolean | undefined;
 	logging?: {
 		sql?: {
-			disableQueryTruncation? : boolean,
-			enableQueryParamLogging? : boolean,
+			disableQueryTruncation?: boolean,
+			enableQueryParamLogging?: boolean,
 		}
 	}
 
diff --git a/packages/backend/src/core/CaptchaService.ts b/packages/backend/src/core/CaptchaService.ts
index 8c7f66236e..ee081f29b0 100644
--- a/packages/backend/src/core/CaptchaService.ts
+++ b/packages/backend/src/core/CaptchaService.ts
@@ -43,7 +43,7 @@ export type CaptchaSetting = {
 		siteKey: string | null;
 		secretKey: string | null;
 	}
-}
+};
 
 export class CaptchaError extends Error {
 	public readonly code: CaptchaErrorCode;
@@ -59,11 +59,11 @@ export class CaptchaError extends Error {
 
 export type CaptchaSaveSuccess = {
 	success: true;
-}
+};
 export type CaptchaSaveFailure = {
 	success: false;
 	error: CaptchaError;
-}
+};
 export type CaptchaSaveResult = CaptchaSaveSuccess | CaptchaSaveFailure;
 
 type CaptchaResponse = {
diff --git a/packages/backend/src/core/FanoutTimelineService.ts b/packages/backend/src/core/FanoutTimelineService.ts
index f6dabfadcd..24999bf4da 100644
--- a/packages/backend/src/core/FanoutTimelineService.ts
+++ b/packages/backend/src/core/FanoutTimelineService.ts
@@ -9,7 +9,7 @@ import { DI } from '@/di-symbols.js';
 import { bindThis } from '@/decorators.js';
 import { IdService } from '@/core/IdService.js';
 
-export type FanoutTimelineName =
+export type FanoutTimelineName = (
 	// home timeline
 	| `homeTimeline:${string}`
 	| `homeTimelineWithFiles:${string}` // only notes with files are included
@@ -37,6 +37,7 @@ export type FanoutTimelineName =
 
 	// role timelines
 	| `roleTimeline:${string}` // any notes are included
+);
 
 @Injectable()
 export class FanoutTimelineService {
diff --git a/packages/backend/src/core/GlobalEventService.ts b/packages/backend/src/core/GlobalEventService.ts
index 03646ff566..224fdabc4c 100644
--- a/packages/backend/src/core/GlobalEventService.ts
+++ b/packages/backend/src/core/GlobalEventService.ts
@@ -211,7 +211,7 @@ type SerializedAll<T> = {
 
 type UndefinedAsNullAll<T> = {
 	[K in keyof T]: T[K] extends undefined ? null : T[K];
-}
+};
 
 export interface InternalEventTypes {
 	userChangeSuspendedState: { id: MiUser['id']; isSuspended: MiUser['isSuspended']; };
diff --git a/packages/backend/src/core/MfmService.ts b/packages/backend/src/core/MfmService.ts
index bf06d4457e..00208927e2 100644
--- a/packages/backend/src/core/MfmService.ts
+++ b/packages/backend/src/core/MfmService.ts
@@ -492,7 +492,8 @@ export class MfmService {
 
 		appendChildren(nodes, body);
 
-		const serialized = new XMLSerializer().serializeToString(body);
+		// Remove the unnecessary namespace
+		const serialized = new XMLSerializer().serializeToString(body).replace(/^\s*<p xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\">/, '<p>');
 
 		happyDOM.close().catch(err => {});
 
diff --git a/packages/backend/src/core/UserWebhookService.ts b/packages/backend/src/core/UserWebhookService.ts
index b1728671ae..9b0a598a1b 100644
--- a/packages/backend/src/core/UserWebhookService.ts
+++ b/packages/backend/src/core/UserWebhookService.ts
@@ -15,7 +15,7 @@ import { QueueService } from '@/core/QueueService.js';
 import type { OnApplicationShutdown } from '@nestjs/common';
 
 export type UserWebhookPayload<T extends WebhookEventTypes> =
-	T extends 'note' | 'reply' | 'renote' |'mention' ? {
+	T extends 'note' | 'reply' | 'renote' | 'mention' ? {
 		note: Packed<'Note'>,
 	} :
 	T extends 'follow' | 'unfollow' ? {
diff --git a/packages/backend/src/core/WebAuthnService.ts b/packages/backend/src/core/WebAuthnService.ts
index ed75e4f467..372e1e2ab7 100644
--- a/packages/backend/src/core/WebAuthnService.ts
+++ b/packages/backend/src/core/WebAuthnService.ts
@@ -127,11 +127,11 @@ export class WebAuthnService {
 		const { registrationInfo } = verification;
 
 		return {
-			credentialID: registrationInfo.credentialID,
-			credentialPublicKey: registrationInfo.credentialPublicKey,
+			credentialID: registrationInfo.credential.id,
+			credentialPublicKey: registrationInfo.credential.publicKey,
 			attestationObject: registrationInfo.attestationObject,
 			fmt: registrationInfo.fmt,
-			counter: registrationInfo.counter,
+			counter: registrationInfo.credential.counter,
 			userVerified: registrationInfo.userVerified,
 			credentialDeviceType: registrationInfo.credentialDeviceType,
 			credentialBackedUp: registrationInfo.credentialBackedUp,
@@ -212,9 +212,9 @@ export class WebAuthnService {
 				expectedChallenge: challenge,
 				expectedOrigin: relyingParty.origin,
 				expectedRPID: relyingParty.rpId,
-				authenticator: {
-					credentialID: key.id,
-					credentialPublicKey: Buffer.from(key.publicKey, 'base64url'),
+				credential: {
+					id: key.id,
+					publicKey: Buffer.from(key.publicKey, 'base64url'),
 					counter: key.counter,
 					transports: key.transports ? key.transports as AuthenticatorTransportFuture[] : undefined,
 				},
@@ -292,9 +292,9 @@ export class WebAuthnService {
 				expectedChallenge: challenge,
 				expectedOrigin: relyingParty.origin,
 				expectedRPID: relyingParty.rpId,
-				authenticator: {
-					credentialID: key.id,
-					credentialPublicKey: Buffer.from(key.publicKey, 'base64url'),
+				credential: {
+					id: key.id,
+					publicKey: Buffer.from(key.publicKey, 'base64url'),
 					counter: key.counter,
 					transports: key.transports ? key.transports as AuthenticatorTransportFuture[] : undefined,
 				},
diff --git a/packages/backend/src/core/entities/UserEntityService.ts b/packages/backend/src/core/entities/UserEntityService.ts
index d3c087a153..fbd3892dd4 100644
--- a/packages/backend/src/core/entities/UserEntityService.ts
+++ b/packages/backend/src/core/entities/UserEntityService.ts
@@ -57,12 +57,14 @@ const ajv = new Ajv();
 
 function isLocalUser(user: MiUser): user is MiLocalUser;
 function isLocalUser<T extends { host: MiUser['host'] }>(user: T): user is (T & { host: null; });
+
 function isLocalUser(user: MiUser | { host: MiUser['host'] }): boolean {
 	return user.host == null;
 }
 
 function isRemoteUser(user: MiUser): user is MiRemoteUser;
 function isRemoteUser<T extends { host: MiUser['host'] }>(user: T): user is (T & { host: string; });
+
 function isRemoteUser(user: MiUser | { host: MiUser['host'] }): boolean {
 	return !isLocalUser(user);
 }
@@ -78,7 +80,7 @@ export type UserRelation = {
 	isBlocked: boolean
 	isMuted: boolean
 	isRenoteMuted: boolean
-}
+};
 
 @Injectable()
 export class UserEntityService implements OnModuleInit {
diff --git a/packages/backend/src/misc/json-schema.ts b/packages/backend/src/misc/json-schema.ts
index f612591eda..ac74d68c95 100644
--- a/packages/backend/src/misc/json-schema.ts
+++ b/packages/backend/src/misc/json-schema.ts
@@ -143,7 +143,7 @@ type OfSchema = {
 	readonly anyOf?: ReadonlyArray<Schema>;
 	readonly oneOf?: ReadonlyArray<Schema>;
 	readonly allOf?: ReadonlyArray<Schema>;
-}
+};
 
 export interface Schema extends OfSchema {
 	readonly type?: TypeStringef;
@@ -217,7 +217,7 @@ type ObjectSchemaTypeDef<p extends Schema> =
 	:
 	p['anyOf'] extends ReadonlyArray<Schema> ? never : // see CONTRIBUTING.md
 	p['allOf'] extends ReadonlyArray<Schema> ? UnionToIntersection<UnionSchemaType<p['allOf']>> :
-	any
+	any;
 
 type ObjectSchemaType<p extends Schema> = NullOrUndefined<p, ObjectSchemaTypeDef<p>>;
 
diff --git a/packages/backend/src/misc/json-value.ts b/packages/backend/src/misc/json-value.ts
index bd7fe12058..195f7c4d47 100644
--- a/packages/backend/src/misc/json-value.ts
+++ b/packages/backend/src/misc/json-value.ts
@@ -4,7 +4,7 @@
  */
 
 export type JsonValue = JsonArray | JsonObject | string | number | boolean | null;
-export type JsonObject = {[K in string]?: JsonValue};
+export type JsonObject = { [K in string]?: JsonValue };
 export type JsonArray = JsonValue[];
 
 export function isJsonObject(value: JsonValue | undefined): value is JsonObject {
diff --git a/packages/backend/src/models/User.ts b/packages/backend/src/models/User.ts
index 96de30c4c2..549d78a22c 100644
--- a/packages/backend/src/models/User.ts
+++ b/packages/backend/src/models/User.ts
@@ -288,24 +288,24 @@ export class MiUser {
 export type MiLocalUser = MiUser & {
 	host: null;
 	uri: null;
-}
+};
 
 export type MiPartialLocalUser = Partial<MiUser> & {
 	id: MiUser['id'];
 	host: null;
 	uri: null;
-}
+};
 
 export type MiRemoteUser = MiUser & {
 	host: string;
 	uri: string;
-}
+};
 
 export type MiPartialRemoteUser = Partial<MiUser> & {
 	id: MiUser['id'];
 	host: string;
 	uri: string;
-}
+};
 
 export const localUsernameSchema = { type: 'string', pattern: /^\w{1,20}$/.toString().slice(1, -1) } as const;
 export const passwordSchema = { type: 'string', minLength: 1 } as const;
diff --git a/packages/backend/src/postgres.ts b/packages/backend/src/postgres.ts
index d09240eba1..8a0b7d97d7 100644
--- a/packages/backend/src/postgres.ts
+++ b/packages/backend/src/postgres.ts
@@ -92,7 +92,7 @@ const sqlLogger = dbLogger.createSubLogger('sql', 'gray');
 export type LoggerProps = {
 	disableQueryTruncation?: boolean;
 	enableQueryParamLogging?: boolean;
-}
+};
 
 function highlightSql(sql: string) {
 	return highlight.highlight(sql, {
diff --git a/packages/backend/src/queue/processors/CheckModeratorsActivityProcessorService.ts b/packages/backend/src/queue/processors/CheckModeratorsActivityProcessorService.ts
index 2e84430e72..c9fe4fca73 100644
--- a/packages/backend/src/queue/processors/CheckModeratorsActivityProcessorService.ts
+++ b/packages/backend/src/queue/processors/CheckModeratorsActivityProcessorService.ts
@@ -29,7 +29,7 @@ export type ModeratorInactivityEvaluationResult = {
 	isModeratorsInactive: boolean;
 	inactiveModerators: MiUser[];
 	remainingTime: ModeratorInactivityRemainingTime;
-}
+};
 
 export type ModeratorInactivityRemainingTime = {
 	time: number;
diff --git a/packages/backend/src/queue/types.ts b/packages/backend/src/queue/types.ts
index 5db919a149..757daea88b 100644
--- a/packages/backend/src/queue/types.ts
+++ b/packages/backend/src/queue/types.ts
@@ -38,7 +38,7 @@ export type RelationshipJobData = {
 	silent?: boolean;
 	requestId?: string;
 	withReplies?: boolean;
-}
+};
 
 export type DbJobData<T extends keyof DbJobMap> = DbJobMap[T];
 
@@ -61,11 +61,11 @@ export type DbJobMap = {
 	importUserLists: DbUserImportJobData;
 	importCustomEmojis: DbUserImportJobData;
 	deleteAccount: DbUserDeleteJobData;
-}
+};
 
 export type DbJobDataWithUser = {
 	user: ThinUser;
-}
+};
 
 export type DbExportFollowingData = {
 	user: ThinUser;
@@ -75,7 +75,7 @@ export type DbExportFollowingData = {
 
 export type DBExportAntennasData = {
 	user: ThinUser
-}
+};
 
 export type DbUserDeleteJobData = {
 	user: ThinUser;
@@ -91,7 +91,7 @@ export type DbUserImportJobData = {
 export type DBAntennaImportJobData = {
 	user: ThinUser,
 	antenna: Antenna
-}
+};
 
 export type DbUserImportToDbJobData = {
 	user: ThinUser;
diff --git a/packages/backend/src/server/api/endpoints.ts b/packages/backend/src/server/api/endpoints.ts
index a9a2ebc041..7f4ca9c0e0 100644
--- a/packages/backend/src/server/api/endpoints.ts
+++ b/packages/backend/src/server/api/endpoints.ts
@@ -122,7 +122,7 @@ export type IEndpointMeta = (Omit<IEndpointMetaBase, 'requireCrential' | 'requir
 }) | (Omit<IEndpointMetaBase, 'requireAdmin' | 'kind'> & {
 	requireAdmin: true,
 	kind: (typeof permissions)[number],
-})
+});
 
 export interface IEndpoint {
 	name: string;
diff --git a/packages/backend/src/server/api/stream/channel.ts b/packages/backend/src/server/api/stream/channel.ts
index 84cb552369..686aea423c 100644
--- a/packages/backend/src/server/api/stream/channel.ts
+++ b/packages/backend/src/server/api/stream/channel.ts
@@ -82,8 +82,8 @@ export default abstract class Channel {
 		this.connection = connection;
 	}
 
-	public send(payload: { type: string, body: JsonValue }): void
-	public send(type: string, payload: JsonValue): void
+	public send(payload: { type: string, body: JsonValue }): void;
+	public send(type: string, payload: JsonValue): void;
 	@bindThis
 	public send(typeOrPayload: { type: string, body: JsonValue } | string, payload?: JsonValue) {
 		const type = payload === undefined ? (typeOrPayload as { type: string, body: JsonValue }).type : (typeOrPayload as string);
@@ -108,4 +108,4 @@ export type MiChannelService<T extends boolean> = {
 	requireCredential: T;
 	kind: T extends true ? string : string | null | undefined;
 	create: (id: string, connection: Connection) => Channel;
-}
+};
diff --git a/packages/backend/test-federation/test/utils.ts b/packages/backend/test-federation/test/utils.ts
index 093277cdb4..db8da5025a 100644
--- a/packages/backend/test-federation/test/utils.ts
+++ b/packages/backend/test-federation/test/utils.ts
@@ -22,7 +22,7 @@ export type LoginUser = SigninResponse & {
 	client: Misskey.api.APIClient;
 	username: string;
 	password: string;
-}
+};
 
 /** used for avoiding overload and some endpoints */
 export type Request = <
diff --git a/packages/backend/test/e2e/fetch-resource.ts b/packages/backend/test/e2e/fetch-resource.ts
index 8ea4cb9800..b85cebf724 100644
--- a/packages/backend/test/e2e/fetch-resource.ts
+++ b/packages/backend/test/e2e/fetch-resource.ts
@@ -10,13 +10,13 @@ import { channel, clip, cookie, galleryPost, page, play, post, signup, simpleGet
 import type { SimpleGetResponse } from '../utils.js';
 import type * as misskey from 'misskey-js';
 
-// Request Accept
+// Request Accept in lowercase
 const ONLY_AP = 'application/activity+json';
 const PREFER_AP = 'application/activity+json, */*';
 const PREFER_HTML = 'text/html, */*';
 const UNSPECIFIED = '*/*';
 
-// Response Content-Type
+// Response Content-Type in lowercase
 const AP = 'application/activity+json; charset=utf-8';
 const HTML = 'text/html; charset=utf-8';
 const JSON_UTF8 = 'application/json; charset=utf-8';
@@ -44,7 +44,8 @@ describe('Webリソース', () => {
 		const { path, accept, cookie, type } = param;
 		const res = await simpleGet(path, accept, cookie);
 		assert.strictEqual(res.status, 200);
-		assert.strictEqual(res.type, type ?? HTML);
+		// Header values are case-insensitive
+		assert.strictEqual(res.type?.toLowerCase(), (type ?? HTML).toLowerCase());
 		return res;
 	};
 
@@ -95,8 +96,7 @@ describe('Webリソース', () => {
 	describe.each([
 		{ path: '/', type: HTML },
 		{ path: '/docs/ja-JP/about', type: HTML }, // "指定されたURLに該当するページはありませんでした。"
-		// fastify-static gives charset=UTF-8 instead of utf-8 and that's okay
-		{ path: '/api-doc', type: 'text/html; charset=UTF-8' },
+		{ path: '/api-doc', type: HTML },
 		{ path: '/api.json', type: JSON_UTF8 },
 		{ path: '/api-console', type: HTML },
 		{ path: '/_info_card_', type: HTML },
diff --git a/packages/backend/test/unit/MfmService.ts b/packages/backend/test/unit/MfmService.ts
index 36af8823f6..7350da3cae 100644
--- a/packages/backend/test/unit/MfmService.ts
+++ b/packages/backend/test/unit/MfmService.ts
@@ -24,13 +24,13 @@ describe('MfmService', () => {
 	describe('toHtml', () => {
 		test('br', () => {
 			const input = 'foo\nbar\nbaz';
-			const output = '<p><span>foo<br>bar<br>baz</span></p>';
+			const output = '<p><span>foo<br />bar<br />baz</span></p>';
 			assert.equal(mfmService.toHtml(mfm.parse(input)), output);
 		});
 
 		test('br alt', () => {
 			const input = 'foo\r\nbar\rbaz';
-			const output = '<p><span>foo<br>bar<br>baz</span></p>';
+			const output = '<p><span>foo<br />bar<br />baz</span></p>';
 			assert.equal(mfmService.toHtml(mfm.parse(input)), output);
 		});