refactor(frontend): os.select, MkSelectのitem指定をオブジェクトによる定義に統一し、型を狭める (#16475)

* refactor(frontend): MkSelectのitem指定をオブジェクトによる定義に統一

* fix

* spdx

* fix

* fix os.select

* fix lint

* add comment

* fix

* fix: os.select対応漏れを修正

* fix

* fix

* fix: MkSelectのmodelに対する型チェックを厳格化

* fix

* fix

* fix

* Update packages/frontend/src/components/MkEmbedCodeGenDialog.vue

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

* fix

* fix types

* fix

* fix

* Update packages/frontend/src/pages/admin/roles.editor.vue

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

* fix: MkSelectに直接配列を指定している場合に正常に型が解決されるように

---------

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

38 files changed, 772 insertions, 442 deletions

diff --git a/packages/frontend/src/pages/about.federation.vue b/packages/frontend/src/pages/about.federation.vue
index 568bf9fd1a..bbfb9a3b7c 100644
--- a/packages/frontend/src/pages/about.federation.vue
+++ b/packages/frontend/src/pages/about.federation.vue
@@ -11,56 +11,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<template #label>{{ i18n.ts.host }}</template>
 		</MkInput>
 		<FormSplit style="margin-top: var(--MI-margin);">
-			<MkSelect v-model="state">
+			<MkSelect v-model="state" :items="stateDef">
 				<template #label>{{ i18n.ts.state }}</template>
-				<option value="all">{{ i18n.ts.all }}</option>
-				<option value="federating">{{ i18n.ts.federating }}</option>
-				<option value="subscribing">{{ i18n.ts.subscribing }}</option>
-				<option value="publishing">{{ i18n.ts.publishing }}</option>
-				<option value="suspended">{{ i18n.ts.suspended }}</option>
-				<option value="silenced">{{ i18n.ts.silence }}</option>
-				<option value="blocked">{{ i18n.ts.blocked }}</option>
-				<option value="notResponding">{{ i18n.ts.notResponding }}</option>
 			</MkSelect>
-			<MkSelect
-				v-model="sort" :items="[{
-					label: `${i18n.ts.pubSub} (${i18n.ts.descendingOrder})`,
-					value: '+pubSub',
-				}, {
-					label: `${i18n.ts.pubSub} (${i18n.ts.ascendingOrder})`,
-					value: '-pubSub',
-				}, {
-					label: `${i18n.ts.notes} (${i18n.ts.descendingOrder})`,
-					value: '+notes',
-				}, {
-					label: `${i18n.ts.notes} (${i18n.ts.ascendingOrder})`,
-					value: '-notes',
-				}, {
-					label: `${i18n.ts.users} (${i18n.ts.descendingOrder})`,
-					value: '+users',
-				}, {
-					label: `${i18n.ts.users} (${i18n.ts.ascendingOrder})`,
-					value: '-users',
-				}, {
-					label: `${i18n.ts.following} (${i18n.ts.descendingOrder})`,
-					value: '+following',
-				}, {
-					label: `${i18n.ts.following} (${i18n.ts.ascendingOrder})`,
-					value: '-following',
-				}, {
-					label: `${i18n.ts.followers} (${i18n.ts.descendingOrder})`,
-					value: '+followers',
-				}, {
-					label: `${i18n.ts.followers} (${i18n.ts.ascendingOrder})`,
-					value: '-followers',
-				}, {
-					label: `${i18n.ts.registeredAt} (${i18n.ts.descendingOrder})`,
-					value: '+firstRetrievedAt',
-				}, {
-					label: `${i18n.ts.registeredAt} (${i18n.ts.ascendingOrder})`,
-					value: '-firstRetrievedAt',
-				}]"
-			>
+			<MkSelect v-model="sort" :items="sortDef">
 				<template #label>{{ i18n.ts.sort }}</template>
 			</MkSelect>
 		</FormSplit>
@@ -85,11 +39,46 @@ import MkPagination from '@/components/MkPagination.vue';
 import MkInstanceCardMini from '@/components/MkInstanceCardMini.vue';
 import FormSplit from '@/components/form/split.vue';
 import { i18n } from '@/i18n.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import { Paginator } from '@/utility/paginator.js';
 
 const host = ref('');
-const state = ref('federating');
-const sort = ref<NonNullable<Misskey.entities.FederationInstancesRequest['sort']>>('+pubSub');
+const {
+	model: state,
+	def: stateDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.all, value: 'all' },
+		{ label: i18n.ts.federating, value: 'federating' },
+		{ label: i18n.ts.subscribing, value: 'subscribing' },
+		{ label: i18n.ts.publishing, value: 'publishing' },
+		{ label: i18n.ts.suspended, value: 'suspended' },
+		{ label: i18n.ts.silence, value: 'silenced' },
+		{ label: i18n.ts.blocked, value: 'blocked' },
+		{ label: i18n.ts.notResponding, value: 'notResponding' },
+	],
+	initialValue: 'federating',
+});
+const {
+	model: sort,
+	def: sortDef,
+} = useMkSelect({
+	items: [
+		{ label: `${i18n.ts.pubSub} (${i18n.ts.descendingOrder})`, value: '+pubSub' },
+		{ label: `${i18n.ts.pubSub} (${i18n.ts.ascendingOrder})`, value: '-pubSub' },
+		{ label: `${i18n.ts.notes} (${i18n.ts.descendingOrder})`, value: '+notes' },
+		{ label: `${i18n.ts.notes} (${i18n.ts.ascendingOrder})`, value: '-notes' },
+		{ label: `${i18n.ts.users} (${i18n.ts.descendingOrder})`, value: '+users' },
+		{ label: `${i18n.ts.users} (${i18n.ts.ascendingOrder})`, value: '-users' },
+		{ label: `${i18n.ts.following} (${i18n.ts.descendingOrder})`, value: '+following' },
+		{ label: `${i18n.ts.following} (${i18n.ts.ascendingOrder})`, value: '-following' },
+		{ label: `${i18n.ts.followers} (${i18n.ts.descendingOrder})`, value: '+followers' },
+		{ label: `${i18n.ts.followers} (${i18n.ts.ascendingOrder})`, value: '-followers' },
+		{ label: `${i18n.ts.registeredAt} (${i18n.ts.descendingOrder})`, value: '+firstRetrievedAt' },
+		{ label: `${i18n.ts.registeredAt} (${i18n.ts.ascendingOrder})`, value: '-firstRetrievedAt' },
+	],
+	initialValue: '+pubSub',
+});
 const paginator = markRaw(new Paginator('federation/instances', {
 	limit: 10,
 	offsetMode: true,
diff --git a/packages/frontend/src/pages/admin-user.vue b/packages/frontend/src/pages/admin-user.vue
index 86dfd38d81..24f2d0d5eb 100644
--- a/packages/frontend/src/pages/admin-user.vue
+++ b/packages/frontend/src/pages/admin-user.vue
@@ -153,17 +153,15 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<div v-else-if="tab === 'announcements'" class="_gaps">
 			<MkButton primary rounded @click="createAnnouncement"><i class="ti ti-plus"></i> {{ i18n.ts.new }}</MkButton>
 
-			<MkSelect v-model="announcementsStatus">
+			<MkSelect v-model="announcementsStatus" :items="announcementsStatusDef">
 				<template #label>{{ i18n.ts.filter }}</template>
-				<option value="active">{{ i18n.ts.active }}</option>
-				<option value="archived">{{ i18n.ts.archived }}</option>
 			</MkSelect>
 
 			<MkPagination :paginator="announcementsPaginator">
 				<template #default="{ items }">
 					<div class="_gaps_s">
 						<div v-for="announcement in items" :key="announcement.id" v-panel :class="$style.announcementItem" @click="editAnnouncement(announcement)">
-							<span style="margin-right: 0.5em;">
+							<span v-if="'icon' in announcement" style="margin-right: 0.5em;">
 								<i v-if="announcement.icon === 'info'" class="ti ti-info-circle"></i>
 								<i v-else-if="announcement.icon === 'warning'" class="ti ti-alert-triangle" style="color: var(--MI_THEME-warn);"></i>
 								<i v-else-if="announcement.icon === 'error'" class="ti ti-circle-x" style="color: var(--MI_THEME-error);"></i>
@@ -184,8 +182,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<div v-else-if="tab === 'chart'" class="_gaps_m">
 			<div class="cmhjzshm">
 				<div class="selects">
-					<MkSelect v-model="chartSrc" style="margin: 0 10px 0 0; flex: 1;">
-						<option value="per-user-notes">{{ i18n.ts.notes }}</option>
+					<MkSelect v-model="chartSrc" :items="chartSrcDef" style="margin: 0 10px 0 0; flex: 1;">
 					</MkSelect>
 				</div>
 				<div class="charts">
@@ -229,6 +226,7 @@ import { misskeyApi } from '@/utility/misskey-api.js';
 import { acct } from '@/filters/user.js';
 import { definePage } from '@/page.js';
 import { i18n } from '@/i18n.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import { ensureSignin, iAmAdmin, iAmModerator } from '@/i.js';
 import MkRolePreview from '@/components/MkRolePreview.vue';
 import MkPagination from '@/components/MkPagination.vue';
@@ -247,7 +245,15 @@ const props = withDefaults(defineProps<{
 const result = await _fetch_();
 
 const tab = ref(props.initialTab);
-const chartSrc = ref<ChartSrc>('per-user-notes');
+const {
+	model: chartSrc,
+	def: chartSrcDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.notes, value: 'per-user-notes' },
+],
+	initialValue: 'per-user-notes',
+});
 const user = ref(result.user);
 const info = ref(result.info);
 const ips = ref(result.ips);
@@ -264,7 +270,16 @@ const filesPaginator = markRaw(new Paginator('admin/drive/files', {
 	})),
 }));
 
-const announcementsStatus = ref<'active' | 'archived'>('active');
+const {
+	model: announcementsStatus,
+	def: announcementsStatusDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.active, value: 'active' },
+		{ label: i18n.ts.archived, value: 'archived' },
+	],
+	initialValue: 'active',
+});
 
 const announcementsPaginator = markRaw(new Paginator('admin/announcements/list', {
 	limit: 10,
@@ -428,22 +443,22 @@ async function assignRole() {
 
 	const { canceled, result: roleId } = await os.select({
 		title: i18n.ts._role.chooseRoleToAssign,
-		items: roles.map(r => ({ text: r.name, value: r.id })),
+		items: roles.map(r => ({ label: r.name, value: r.id })),
 	});
 	if (canceled || roleId == null) return;
 
 	const { canceled: canceled2, result: period } = await os.select({
 		title: i18n.ts.period + ': ' + roles.find(r => r.id === roleId)!.name,
 		items: [{
-			value: 'indefinitely', text: i18n.ts.indefinitely,
+			value: 'indefinitely', label: i18n.ts.indefinitely,
 		}, {
-			value: 'oneHour', text: i18n.ts.oneHour,
+			value: 'oneHour', label: i18n.ts.oneHour,
 		}, {
-			value: 'oneDay', text: i18n.ts.oneDay,
+			value: 'oneDay', label: i18n.ts.oneDay,
 		}, {
-			value: 'oneWeek', text: i18n.ts.oneWeek,
+			value: 'oneWeek', label: i18n.ts.oneWeek,
 		}, {
-			value: 'oneMonth', text: i18n.ts.oneMonth,
+			value: 'oneMonth', label: i18n.ts.oneMonth,
 		}],
 		default: 'indefinitely',
 	});
diff --git a/packages/frontend/src/pages/admin/RolesEditorFormula.vue b/packages/frontend/src/pages/admin/RolesEditorFormula.vue
index 89ecc155b2..9d9db9158d 100644
--- a/packages/frontend/src/pages/admin/RolesEditorFormula.vue
+++ b/packages/frontend/src/pages/admin/RolesEditorFormula.vue
@@ -6,26 +6,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <template>
 <div class="_gaps">
 	<div :class="$style.header">
-		<MkSelect v-model="type" :class="$style.typeSelect">
-			<option value="isLocal">{{ i18n.ts._role._condition.isLocal }}</option>
-			<option value="isRemote">{{ i18n.ts._role._condition.isRemote }}</option>
-			<option value="isSuspended">{{ i18n.ts._role._condition.isSuspended }}</option>
-			<option value="isLocked">{{ i18n.ts._role._condition.isLocked }}</option>
-			<option value="isBot">{{ i18n.ts._role._condition.isBot }}</option>
-			<option value="isCat">{{ i18n.ts._role._condition.isCat }}</option>
-			<option value="isExplorable">{{ i18n.ts._role._condition.isExplorable }}</option>
-			<option value="roleAssignedTo">{{ i18n.ts._role._condition.roleAssignedTo }}</option>
-			<option value="createdLessThan">{{ i18n.ts._role._condition.createdLessThan }}</option>
-			<option value="createdMoreThan">{{ i18n.ts._role._condition.createdMoreThan }}</option>
-			<option value="followersLessThanOrEq">{{ i18n.ts._role._condition.followersLessThanOrEq }}</option>
-			<option value="followersMoreThanOrEq">{{ i18n.ts._role._condition.followersMoreThanOrEq }}</option>
-			<option value="followingLessThanOrEq">{{ i18n.ts._role._condition.followingLessThanOrEq }}</option>
-			<option value="followingMoreThanOrEq">{{ i18n.ts._role._condition.followingMoreThanOrEq }}</option>
-			<option value="notesLessThanOrEq">{{ i18n.ts._role._condition.notesLessThanOrEq }}</option>
-			<option value="notesMoreThanOrEq">{{ i18n.ts._role._condition.notesMoreThanOrEq }}</option>
-			<option value="and">{{ i18n.ts._role._condition.and }}</option>
-			<option value="or">{{ i18n.ts._role._condition.or }}</option>
-			<option value="not">{{ i18n.ts._role._condition.not }}</option>
+		<MkSelect v-model="type" :items="typeDef" :class="$style.typeSelect">
 		</MkSelect>
 		<button v-if="draggable" class="drag-handle _button" :class="$style.dragHandle">
 			<i class="ti ti-menu-2"></i>
@@ -58,8 +39,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<MkInput v-else-if="['followersLessThanOrEq', 'followersMoreThanOrEq', 'followingLessThanOrEq', 'followingMoreThanOrEq', 'notesLessThanOrEq', 'notesMoreThanOrEq'].includes(type)" v-model="v.value" type="number">
 	</MkInput>
 
-	<MkSelect v-else-if="type === 'roleAssignedTo'" v-model="v.roleId">
-		<option v-for="role in roles.filter(r => r.target === 'manual')" :key="role.id" :value="role.id">{{ role.name }}</option>
+	<MkSelect v-else-if="type === 'roleAssignedTo'" v-model="v.roleId" :items="assignedToDef">
 	</MkSelect>
 </div>
 </template>
@@ -69,6 +49,7 @@ import { computed, defineAsyncComponent, ref, watch } from 'vue';
 import { genId } from '@/utility/id.js';
 import MkInput from '@/components/MkInput.vue';
 import MkSelect from '@/components/MkSelect.vue';
+import type { GetMkSelectValueTypesFromDef, MkSelectItem } from '@/components/MkSelect.vue';
 import MkButton from '@/components/MkButton.vue';
 import { i18n } from '@/i18n.js';
 import { deepClone } from '@/utility/clone.js';
@@ -99,7 +80,29 @@ watch(v, () => {
 	emit('update:modelValue', v.value);
 }, { deep: true });
 
-const type = computed({
+const typeDef = [
+	{ label: i18n.ts._role._condition.isLocal, value: 'isLocal' },
+	{ label: i18n.ts._role._condition.isRemote, value: 'isRemote' },
+	{ label: i18n.ts._role._condition.isSuspended, value: 'isSuspended' },
+	{ label: i18n.ts._role._condition.isLocked, value: 'isLocked' },
+	{ label: i18n.ts._role._condition.isBot, value: 'isBot' },
+	{ label: i18n.ts._role._condition.isCat, value: 'isCat' },
+	{ label: i18n.ts._role._condition.isExplorable, value: 'isExplorable' },
+	{ label: i18n.ts._role._condition.roleAssignedTo, value: 'roleAssignedTo' },
+	{ label: i18n.ts._role._condition.createdLessThan, value: 'createdLessThan' },
+	{ label: i18n.ts._role._condition.createdMoreThan, value: 'createdMoreThan' },
+	{ label: i18n.ts._role._condition.followersLessThanOrEq, value: 'followersLessThanOrEq' },
+	{ label: i18n.ts._role._condition.followersMoreThanOrEq, value: 'followersMoreThanOrEq' },
+	{ label: i18n.ts._role._condition.followingLessThanOrEq, value: 'followingLessThanOrEq' },
+	{ label: i18n.ts._role._condition.followingMoreThanOrEq, value: 'followingMoreThanOrEq' },
+	{ label: i18n.ts._role._condition.notesLessThanOrEq, value: 'notesLessThanOrEq' },
+	{ label: i18n.ts._role._condition.notesMoreThanOrEq, value: 'notesMoreThanOrEq' },
+	{ label: i18n.ts._role._condition.and, value: 'and' },
+	{ label: i18n.ts._role._condition.or, value: 'or' },
+	{ label: i18n.ts._role._condition.not, value: 'not' },
+] as const satisfies MkSelectItem[];
+
+const type = computed<GetMkSelectValueTypesFromDef<typeof typeDef>>({
 	get: () => v.value.type,
 	set: (t) => {
 		if (t === 'and') v.value.values = [];
@@ -118,6 +121,8 @@ const type = computed({
 	},
 });
 
+const assignedToDef = computed(() => roles.filter(r => r.target === 'manual').map(r => ({ label: r.name, value: r.id })) satisfies MkSelectItem[]);
+
 function addValue() {
 	v.value.values.push({ id: genId(), type: 'isRemote' });
 }
diff --git a/packages/frontend/src/pages/admin/abuse-report/notification-recipient.editor.vue b/packages/frontend/src/pages/admin/abuse-report/notification-recipient.editor.vue
index b69c818b48..7c3f736506 100644
--- a/packages/frontend/src/pages/admin/abuse-report/notification-recipient.editor.vue
+++ b/packages/frontend/src/pages/admin/abuse-report/notification-recipient.editor.vue
@@ -22,27 +22,19 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkInput v-model="title">
 					<template #label>{{ i18n.ts.title }}</template>
 				</MkInput>
-				<MkSelect v-model="method">
+				<MkSelect v-model="method" :items="methodDef">
 					<template #label>{{ i18n.ts._abuseReport._notificationRecipient.recipientType }}</template>
-					<option value="email">{{ i18n.ts._abuseReport._notificationRecipient._recipientType.mail }}</option>
-					<option value="webhook">{{ i18n.ts._abuseReport._notificationRecipient._recipientType.webhook }}</option>
 					<template #caption>
 						{{ methodCaption }}
 					</template>
 				</MkSelect>
 				<div>
-					<MkSelect v-if="method === 'email'" v-model="userId">
+					<MkSelect v-if="method === 'email'" v-model="userId" :items="userIdDef">
 						<template #label>{{ i18n.ts._abuseReport._notificationRecipient.notifiedUser }}</template>
-						<option v-for="user in moderators" :key="user.id" :value="user.id">
-							{{ user.name ? `${user.name}(${user.username})` : user.username }}
-						</option>
 					</MkSelect>
 					<div v-else-if="method === 'webhook'" :class="$style.systemWebhook">
-						<MkSelect v-model="systemWebhookId" style="flex: 1">
+						<MkSelect v-model="systemWebhookId" :items="systemWebhookIdDef" style="flex: 1">
 							<template #label>{{ i18n.ts._abuseReport._notificationRecipient.notifiedWebhook }}</template>
-							<option v-for="webhook in systemWebhooks" :key="webhook.id ?? undefined" :value="webhook.id">
-								{{ webhook.name }}
-							</option>
 						</MkSelect>
 						<MkButton rounded :class="$style.systemWebhookEditButton" @click="onEditSystemWebhookClicked">
 							<span v-if="systemWebhookId === null" class="ti ti-plus" style="line-height: normal"/>
@@ -79,14 +71,13 @@ import MkModalWindow from '@/components/MkModalWindow.vue';
 import { i18n } from '@/i18n.js';
 import MkInput from '@/components/MkInput.vue';
 import { misskeyApi } from '@/utility/misskey-api.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import MkSelect from '@/components/MkSelect.vue';
 import { showSystemWebhookEditorDialog } from '@/components/MkSystemWebhookEditor.impl.js';
 import MkSwitch from '@/components/MkSwitch.vue';
 import MkDivider from '@/components/MkDivider.vue';
 import * as os from '@/os.js';
 
-type NotificationRecipientMethod = 'email' | 'webhook';
-
 const emit = defineEmits<{
 	(ev: 'submitted'): void;
 	(ev: 'canceled'): void;
@@ -105,9 +96,28 @@ const dialogEl = useTemplateRef('dialogEl');
 const loading = ref<number>(0);
 
 const title = ref<string>('');
-const method = ref<NotificationRecipientMethod>('email');
-const userId = ref<string | null>(null);
-const systemWebhookId = ref<string | null>(null);
+const {
+	model: method,
+	def: methodDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts._abuseReport._notificationRecipient._recipientType.mail, value: 'email' },
+		{ label: i18n.ts._abuseReport._notificationRecipient._recipientType.webhook, value: 'webhook' },
+	],
+	initialValue: 'email',
+});
+const {
+	model: userId,
+	def: userIdDef,
+} = useMkSelect({
+	items: computed(() => moderators.value.map(u => ({ label: u.name ? `${u.name}(${u.username})` : u.username, value: u.id as string | null }))),
+});
+const {
+	model: systemWebhookId,
+	def: systemWebhookIdDef,
+} = useMkSelect({
+	items: computed(() => systemWebhooks.value.map(w => ({ label: w.name, value: w.id }))),
+});
 const isActive = ref<boolean>(true);
 
 const moderators = ref<entities.User[]>([]);
diff --git a/packages/frontend/src/pages/admin/abuse-report/notification-recipient.vue b/packages/frontend/src/pages/admin/abuse-report/notification-recipient.vue
index f5e77cbe4e..893bd8d6d3 100644
--- a/packages/frontend/src/pages/admin/abuse-report/notification-recipient.vue
+++ b/packages/frontend/src/pages/admin/abuse-report/notification-recipient.vue
@@ -13,11 +13,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkButton>
 			</div>
 			<div :class="$style.subMenus" class="_gaps_s">
-				<MkSelect v-model="filterMethod" style="flex: 1">
+				<MkSelect v-model="filterMethod" :items="filterMethodDef" style="flex: 1">
 					<template #label>{{ i18n.ts._abuseReport._notificationRecipient.recipientType }}</template>
-					<option :value="null">-</option>
-					<option :value="'email'">{{ i18n.ts._abuseReport._notificationRecipient._recipientType.mail }}</option>
-					<option :value="'webhook'">{{ i18n.ts._abuseReport._notificationRecipient._recipientType.webhook }}</option>
 				</MkSelect>
 				<MkInput v-model="filterText" type="search" style="flex: 1">
 					<template #label>{{ i18n.ts._abuseReport._notificationRecipient.keywords }}</template>
@@ -51,10 +48,21 @@ import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
 import MkDivider from '@/components/MkDivider.vue';
 import { i18n } from '@/i18n.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 
 const recipients = ref<entities.AbuseReportNotificationRecipient[]>([]);
 
-const filterMethod = ref<string | null>(null);
+const {
+	model: filterMethod,
+	def: filterMethodDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.all, value: null },
+		{ label: i18n.ts._abuseReport._notificationRecipient._recipientType.mail, value: 'email' },
+		{ label: i18n.ts._abuseReport._notificationRecipient._recipientType.webhook, value: 'webhook' },
+	],
+	initialValue: null,
+});
 const filterText = ref<string>('');
 
 const filteredRecipients = computed(() => {
diff --git a/packages/frontend/src/pages/admin/abuses.vue b/packages/frontend/src/pages/admin/abuses.vue
index ab462229a7..76bf20b409 100644
--- a/packages/frontend/src/pages/admin/abuses.vue
+++ b/packages/frontend/src/pages/admin/abuses.vue
@@ -16,23 +16,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</MkTip>
 
 			<div :class="$style.inputs" class="_gaps">
-				<MkSelect v-model="state" style="margin: 0; flex: 1;">
+				<MkSelect v-model="state" :items="stateDef" style="margin: 0; flex: 1;">
 					<template #label>{{ i18n.ts.state }}</template>
-					<option value="all">{{ i18n.ts.all }}</option>
-					<option value="unresolved">{{ i18n.ts.unresolved }}</option>
-					<option value="resolved">{{ i18n.ts.resolved }}</option>
 				</MkSelect>
-				<MkSelect v-model="targetUserOrigin" style="margin: 0; flex: 1;">
+				<MkSelect v-model="targetUserOrigin" :items="targetUserOriginDef" style="margin: 0; flex: 1;">
 					<template #label>{{ i18n.ts.reporteeOrigin }}</template>
-					<option value="combined">{{ i18n.ts.all }}</option>
-					<option value="local">{{ i18n.ts.local }}</option>
-					<option value="remote">{{ i18n.ts.remote }}</option>
 				</MkSelect>
-				<MkSelect v-model="reporterOrigin" style="margin: 0; flex: 1;">
+				<MkSelect v-model="reporterOrigin" :items="reporterOriginDef" style="margin: 0; flex: 1;">
 					<template #label>{{ i18n.ts.reporterOrigin }}</template>
-					<option value="combined">{{ i18n.ts.all }}</option>
-					<option value="local">{{ i18n.ts.local }}</option>
-					<option value="remote">{{ i18n.ts.remote }}</option>
 				</MkSelect>
 			</div>
 
@@ -64,13 +55,44 @@ import MkPagination from '@/components/MkPagination.vue';
 import XAbuseReport from '@/components/MkAbuseReport.vue';
 import { i18n } from '@/i18n.js';
 import { definePage } from '@/page.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import MkButton from '@/components/MkButton.vue';
 import { store } from '@/store.js';
 import { Paginator } from '@/utility/paginator.js';
 
-const state = ref('unresolved');
-const reporterOrigin = ref('combined');
-const targetUserOrigin = ref('combined');
+const {
+	model: state,
+	def: stateDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.all, value: 'all' },
+		{ label: i18n.ts.unresolved, value: 'unresolved' },
+		{ label: i18n.ts.resolved, value: 'resolved' },
+	],
+	initialValue: 'unresolved',
+});
+const {
+	model: reporterOrigin,
+	def: reporterOriginDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.all, value: 'combined' },
+		{ label: i18n.ts.local, value: 'local' },
+		{ label: i18n.ts.remote, value: 'remote' },
+	],
+	initialValue: 'combined',
+});
+const {
+	model: targetUserOrigin,
+	def: targetUserOriginDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.all, value: 'combined' },
+		{ label: i18n.ts.local, value: 'local' },
+		{ label: i18n.ts.remote, value: 'remote' },
+	],
+	initialValue: 'combined',
+});
 const searchUsername = ref('');
 const searchHost = ref('');
 
diff --git a/packages/frontend/src/pages/admin/ads.vue b/packages/frontend/src/pages/admin/ads.vue
index 06a28db088..17008e0c13 100644
--- a/packages/frontend/src/pages/admin/ads.vue
+++ b/packages/frontend/src/pages/admin/ads.vue
@@ -6,11 +6,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
 	<div class="_spacer" style="--MI_SPACER-w: 900px;">
-		<MkSelect v-model="filterType" :class="$style.input" @update:modelValue="filterItems">
+		<MkSelect v-model="filterType" :items="filterTypeDef" :class="$style.input" @update:modelValue="filterItems">
 			<template #label>{{ i18n.ts.state }}</template>
-			<option value="all">{{ i18n.ts.all }}</option>
-			<option value="publishing">{{ i18n.ts.publishing }}</option>
-			<option value="expired">{{ i18n.ts.expired }}</option>
 		</MkSelect>
 		<div>
 			<div v-for="ad in ads" class="_panel _gaps_m" :class="$style.ad">
@@ -95,6 +92,7 @@ import * as os from '@/os.js';
 import { misskeyApi } from '@/utility/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePage } from '@/page.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 
 const ads = ref<Misskey.entities.Ad[]>([]);
 
@@ -102,7 +100,17 @@ const ads = ref<Misskey.entities.Ad[]>([]);
 const localTime = new Date();
 const localTimeDiff = localTime.getTimezoneOffset() * 60 * 1000;
 const daysOfWeek: string[] = [i18n.ts._weekday.sunday, i18n.ts._weekday.monday, i18n.ts._weekday.tuesday, i18n.ts._weekday.wednesday, i18n.ts._weekday.thursday, i18n.ts._weekday.friday, i18n.ts._weekday.saturday];
-const filterType = ref('all');
+const {
+	model: filterType,
+	def: filterTypeDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.all, value: 'all' },
+		{ label: i18n.ts.publishing, value: 'publishing' },
+		{ label: i18n.ts.expired, value: 'expired' },
+	],
+	initialValue: 'all',
+});
 let publishing: boolean | null = null;
 
 misskeyApi('admin/ad/list', { publishing: publishing }).then(adsResponse => {
@@ -121,7 +129,7 @@ misskeyApi('admin/ad/list', { publishing: publishing }).then(adsResponse => {
 	}
 });
 
-const filterItems = (v) => {
+const filterItems = (v: typeof filterType.value) => {
 	if (v === 'publishing') {
 		publishing = true;
 	} else if (v === 'expired') {
@@ -134,7 +142,7 @@ const filterItems = (v) => {
 };
 
 // 選択された曜日(index)のビットフラグを操作する
-function toggleDayOfWeek(ad, index) {
+function toggleDayOfWeek(ad: Misskey.entities.Ad, index: number) {
 	ad.dayOfWeek ^= 1 << index;
 }
 
@@ -153,7 +161,7 @@ function add() {
 	});
 }
 
-function remove(ad) {
+function remove(ad: Misskey.entities.Ad) {
 	os.confirm({
 		type: 'warning',
 		text: i18n.tsx.removeAreYouSure({ x: ad.url }),
@@ -169,7 +177,7 @@ function remove(ad) {
 	});
 }
 
-function save(ad) {
+function save(ad: Misskey.entities.Ad) {
 	if (ad.id === '') {
 		misskeyApi('admin/ad/create', {
 			...ad,
diff --git a/packages/frontend/src/pages/admin/announcements.vue b/packages/frontend/src/pages/admin/announcements.vue
index e5903d6257..b90a724b17 100644
--- a/packages/frontend/src/pages/admin/announcements.vue
+++ b/packages/frontend/src/pages/admin/announcements.vue
@@ -10,10 +10,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkInfo>{{ i18n.ts._announcement.shouldNotBeUsedToPresentPermanentInfo }}</MkInfo>
 			<MkInfo v-if="announcements.length > 5" warn>{{ i18n.ts._announcement.tooManyActiveAnnouncementDescription }}</MkInfo>
 
-			<MkSelect v-model="announcementsStatus">
+			<MkSelect v-model="announcementsStatus" :items="announcementsStatusDef">
 				<template #label>{{ i18n.ts.filter }}</template>
-				<option value="active">{{ i18n.ts.active }}</option>
-				<option value="archived">{{ i18n.ts.archived }}</option>
 			</MkSelect>
 
 			<MkLoading v-if="loading"/>
@@ -98,8 +96,18 @@ import { definePage } from '@/page.js';
 import MkFolder from '@/components/MkFolder.vue';
 import MkTextarea from '@/components/MkTextarea.vue';
 import { genId } from '@/utility/id.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 
-const announcementsStatus = ref<'active' | 'archived'>('active');
+const {
+	model: announcementsStatus,
+	def: announcementsStatusDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.active, value: 'active' },
+		{ label: i18n.ts.archived, value: 'archived' },
+	],
+	initialValue: 'active',
+});
 
 const loading = ref(true);
 const loadingMore = ref(false);
diff --git a/packages/frontend/src/pages/admin/custom-emojis-manager.local.list.search.vue b/packages/frontend/src/pages/admin/custom-emojis-manager.local.list.search.vue
index 9938d5cc4a..6b5272914b 100644
--- a/packages/frontend/src/pages/admin/custom-emojis-manager.local.list.search.vue
+++ b/packages/frontend/src/pages/admin/custom-emojis-manager.local.list.search.vue
@@ -56,20 +56,24 @@ SPDX-License-Identifier: AGPL-3.0-only
 					</MkInput>
 					<MkSelect
 						v-model="model.sensitive"
+						:items="[
+							{ label: '-', value: null },
+							{ label: 'true', value: 'true' },
+							{ label: 'false', value: 'false' },
+						]"
 					>
 						<template #label>sensitive</template>
-						<option :value="null">-</option>
-						<option :value="true">true</option>
-						<option :value="false">false</option>
 					</MkSelect>
 
 					<MkSelect
 						v-model="model.localOnly"
+						:items="[
+							{ label: '-', value: null },
+							{ label: 'true', value: 'true' },
+							{ label: 'false', value: 'false' },
+						]"
 					>
 						<template #label>localOnly</template>
-						<option :value="null">-</option>
-						<option :value="true">true</option>
-						<option :value="false">false</option>
 					</MkSelect>
 					<MkInput
 						v-model="model.updatedAtFrom"
diff --git a/packages/frontend/src/pages/admin/custom-emojis-manager.register.vue b/packages/frontend/src/pages/admin/custom-emojis-manager.register.vue
index 176d1121c5..c343d88eb1 100644
--- a/packages/frontend/src/pages/admin/custom-emojis-manager.register.vue
+++ b/packages/frontend/src/pages/admin/custom-emojis-manager.register.vue
@@ -12,11 +12,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<template #caption>{{ i18n.ts._customEmojisManager._local._register.uploadSettingDescription }}</template>
 
 			<div class="_gaps">
-				<MkSelect v-model="selectedFolderId">
+				<MkSelect v-model="selectedFolderId" :items="selectedFolderIdDef">
 					<template #label>{{ i18n.ts.uploadFolder }}</template>
-					<option v-for="folder in uploadFolders" :key="folder.id" :value="folder.id">
-						{{ folder.name }}
-					</option>
 				</MkSelect>
 
 				<MkSwitch v-model="directoryToCategory">
@@ -63,7 +60,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script setup lang="ts">
 /* eslint-disable @typescript-eslint/no-non-null-assertion */
 import * as Misskey from 'misskey-js';
-import { onMounted, ref, useCssModule } from 'vue';
+import { computed, onMounted, ref, useCssModule } from 'vue';
 import type { RequestLogItem } from '@/pages/admin/custom-emojis-manager.impl.js';
 import type { GridCellValidationEvent, GridCellValueChangeEvent, GridEvent } from '@/components/grid/grid-event.js';
 import type { DroppedFile } from '@/utility/file-drop.js';
@@ -87,6 +84,7 @@ import { chooseDriveFile, chooseFileFromPcAndUpload } from '@/utility/drive.js';
 import { extractDroppedItems, flattenDroppedFiles } from '@/utility/file-drop.js';
 import XRegisterLogs from '@/pages/admin/custom-emojis-manager.logs.vue';
 import { copyGridDataToClipboard } from '@/components/grid/grid-utils.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 
 import { prefer } from '@/preferences.js';
 
@@ -229,7 +227,13 @@ function setupGrid(): GridSetting {
 
 const uploadFolders = ref<FolderItem[]>([]);
 const gridItems = ref<GridItem[]>([]);
-const selectedFolderId = ref(prefer.s.uploadFolder);
+const {
+	model: selectedFolderId,
+	def: selectedFolderIdDef,
+} = useMkSelect({
+	items: computed(() => uploadFolders.value.map(folder => ({ label: folder.name, value: folder.id || '' }))),
+	initialValue: prefer.s.uploadFolder,
+});
 const directoryToCategory = ref<boolean>(false);
 const registerButtonDisabled = ref<boolean>(false);
 const requestLogs = ref<RequestLogItem[]>([]);
diff --git a/packages/frontend/src/pages/admin/federation.vue b/packages/frontend/src/pages/admin/federation.vue
index ddc3ff7b79..cbf7dbbff5 100644
--- a/packages/frontend/src/pages/admin/federation.vue
+++ b/packages/frontend/src/pages/admin/federation.vue
@@ -13,31 +13,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<template #label>{{ i18n.ts.host }}</template>
 				</MkInput>
 				<FormSplit style="margin-top: var(--MI-margin);">
-					<MkSelect v-model="state">
+					<MkSelect v-model="state" :items="stateDef">
 						<template #label>{{ i18n.ts.state }}</template>
-						<option value="all">{{ i18n.ts.all }}</option>
-						<option value="federating">{{ i18n.ts.federating }}</option>
-						<option value="subscribing">{{ i18n.ts.subscribing }}</option>
-						<option value="publishing">{{ i18n.ts.publishing }}</option>
-						<option value="suspended">{{ i18n.ts.suspended }}</option>
-						<option value="blocked">{{ i18n.ts.blocked }}</option>
-						<option value="silenced">{{ i18n.ts.silence }}</option>
-						<option value="notResponding">{{ i18n.ts.notResponding }}</option>
 					</MkSelect>
-					<MkSelect v-model="sort">
+					<MkSelect v-model="sort" :items="sortDef">
 						<template #label>{{ i18n.ts.sort }}</template>
-						<option value="+pubSub">{{ i18n.ts.pubSub }} ({{ i18n.ts.descendingOrder }})</option>
-						<option value="-pubSub">{{ i18n.ts.pubSub }} ({{ i18n.ts.ascendingOrder }})</option>
-						<option value="+notes">{{ i18n.ts.notes }} ({{ i18n.ts.descendingOrder }})</option>
-						<option value="-notes">{{ i18n.ts.notes }} ({{ i18n.ts.ascendingOrder }})</option>
-						<option value="+users">{{ i18n.ts.users }} ({{ i18n.ts.descendingOrder }})</option>
-						<option value="-users">{{ i18n.ts.users }} ({{ i18n.ts.ascendingOrder }})</option>
-						<option value="+following">{{ i18n.ts.following }} ({{ i18n.ts.descendingOrder }})</option>
-						<option value="-following">{{ i18n.ts.following }} ({{ i18n.ts.ascendingOrder }})</option>
-						<option value="+followers">{{ i18n.ts.followers }} ({{ i18n.ts.descendingOrder }})</option>
-						<option value="-followers">{{ i18n.ts.followers }} ({{ i18n.ts.ascendingOrder }})</option>
-						<option value="+firstRetrievedAt">{{ i18n.ts.registeredAt }} ({{ i18n.ts.descendingOrder }})</option>
-						<option value="-firstRetrievedAt">{{ i18n.ts.registeredAt }} ({{ i18n.ts.ascendingOrder }})</option>
 					</MkSelect>
 				</FormSplit>
 			</div>
@@ -64,11 +44,46 @@ import MkInstanceCardMini from '@/components/MkInstanceCardMini.vue';
 import FormSplit from '@/components/form/split.vue';
 import { i18n } from '@/i18n.js';
 import { definePage } from '@/page.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import { Paginator } from '@/utility/paginator.js';
 
 const host = ref('');
-const state = ref('federating');
-const sort = ref('+pubSub');
+const {
+	model: state,
+	def: stateDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.all, value: 'all' },
+		{ label: i18n.ts.federating, value: 'federating' },
+		{ label: i18n.ts.subscribing, value: 'subscribing' },
+		{ label: i18n.ts.publishing, value: 'publishing' },
+		{ label: i18n.ts.suspended, value: 'suspended' },
+		{ label: i18n.ts.blocked, value: 'blocked' },
+		{ label: i18n.ts.silence, value: 'silenced' },
+		{ label: i18n.ts.notResponding, value: 'notResponding' },
+	],
+	initialValue: 'federating',
+});
+const {
+	model: sort,
+	def: sortDef,
+} = useMkSelect({
+	items: [
+		{ label: `${i18n.ts.pubSub} (${i18n.ts.descendingOrder})`, value: '+pubSub' },
+		{ label: `${i18n.ts.pubSub} (${i18n.ts.ascendingOrder})`, value: '-pubSub' },
+		{ label: `${i18n.ts.notes} (${i18n.ts.descendingOrder})`, value: '+notes' },
+		{ label: `${i18n.ts.notes} (${i18n.ts.ascendingOrder})`, value: '-notes' },
+		{ label: `${i18n.ts.users} (${i18n.ts.descendingOrder})`, value: '+users' },
+		{ label: `${i18n.ts.users} (${i18n.ts.ascendingOrder})`, value: '-users' },
+		{ label: `${i18n.ts.following} (${i18n.ts.descendingOrder})`, value: '+following' },
+		{ label: `${i18n.ts.following} (${i18n.ts.ascendingOrder})`, value: '-following' },
+		{ label: `${i18n.ts.followers} (${i18n.ts.descendingOrder})`, value: '+followers' },
+		{ label: `${i18n.ts.followers} (${i18n.ts.ascendingOrder})`, value: '-followers' },
+		{ label: `${i18n.ts.registeredAt} (${i18n.ts.descendingOrder})`, value: '+firstRetrievedAt' },
+		{ label: `${i18n.ts.registeredAt} (${i18n.ts.ascendingOrder})`, value: '-firstRetrievedAt' },
+	],
+	initialValue: '+pubSub',
+});
 const paginator = markRaw(new Paginator('federation/instances', {
 	limit: 10,
 	offsetMode: true,
diff --git a/packages/frontend/src/pages/admin/files.vue b/packages/frontend/src/pages/admin/files.vue
index b4ec930997..c8b5980883 100644
--- a/packages/frontend/src/pages/admin/files.vue
+++ b/packages/frontend/src/pages/admin/files.vue
@@ -8,11 +8,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<div class="_spacer" style="--MI_SPACER-w: 900px;">
 		<div class="_gaps">
 			<div class="inputs" style="display: flex; gap: var(--MI-margin); flex-wrap: wrap;">
-				<MkSelect v-model="origin" style="margin: 0; flex: 1;">
+				<MkSelect v-model="origin" :items="originDef" style="margin: 0; flex: 1;">
 					<template #label>{{ i18n.ts.instance }}</template>
-					<option value="combined">{{ i18n.ts.all }}</option>
-					<option value="local">{{ i18n.ts.local }}</option>
-					<option value="remote">{{ i18n.ts.remote }}</option>
 				</MkSelect>
 				<MkInput v-model="searchHost" :debounce="true" type="search" style="margin: 0; flex: 1;" :disabled="paginator.computedParams?.value?.origin === 'local'">
 					<template #label>{{ i18n.ts.host }}</template>
@@ -42,9 +39,20 @@ import * as os from '@/os.js';
 import { lookupFile } from '@/utility/admin-lookup.js';
 import { i18n } from '@/i18n.js';
 import { definePage } from '@/page.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import { Paginator } from '@/utility/paginator.js';
 
-const origin = ref<NonNullable<Misskey.entities.AdminDriveFilesRequest['origin']>>('local');
+const {
+	model: origin,
+	def: originDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.all, value: 'combined' },
+		{ label: i18n.ts.local, value: 'local' },
+		{ label: i18n.ts.remote, value: 'remote' },
+	],
+	initialValue: 'local',
+});
 const type = ref<string | null>(null);
 const searchHost = ref('');
 const userId = ref('');
diff --git a/packages/frontend/src/pages/admin/invites.vue b/packages/frontend/src/pages/admin/invites.vue
index 1c551cb477..d52a57e582 100644
--- a/packages/frontend/src/pages/admin/invites.vue
+++ b/packages/frontend/src/pages/admin/invites.vue
@@ -26,19 +26,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</MkFolder>
 
 			<div :class="$style.inputs">
-				<MkSelect v-model="type" :class="$style.input">
+				<MkSelect v-model="type" :items="typeDef" :class="$style.input">
 					<template #label>{{ i18n.ts.state }}</template>
-					<option value="all">{{ i18n.ts.all }}</option>
-					<option value="unused">{{ i18n.ts.unused }}</option>
-					<option value="used">{{ i18n.ts.used }}</option>
-					<option value="expired">{{ i18n.ts.expired }}</option>
 				</MkSelect>
-				<MkSelect v-model="sort" :class="$style.input">
+				<MkSelect v-model="sort" :items="sortDef" :class="$style.input">
 					<template #label>{{ i18n.ts.sort }}</template>
-					<option value="+createdAt">{{ i18n.ts.createdAt }} ({{ i18n.ts.ascendingOrder }})</option>
-					<option value="-createdAt">{{ i18n.ts.createdAt }} ({{ i18n.ts.descendingOrder }})</option>
-					<option value="+usedAt">{{ i18n.ts.usedAt }} ({{ i18n.ts.ascendingOrder }})</option>
-					<option value="-usedAt">{{ i18n.ts.usedAt }} ({{ i18n.ts.descendingOrder }})</option>
 				</MkSelect>
 			</div>
 			<MkPagination :paginator="paginator">
@@ -67,10 +59,33 @@ import MkSwitch from '@/components/MkSwitch.vue';
 import MkPagination from '@/components/MkPagination.vue';
 import MkInviteCode from '@/components/MkInviteCode.vue';
 import { definePage } from '@/page.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import { Paginator } from '@/utility/paginator.js';
 
-const type = ref<NonNullable<Misskey.entities.AdminInviteListRequest['type']>>('all');
-const sort = ref<NonNullable<Misskey.entities.AdminInviteListRequest['sort']>>('+createdAt');
+const {
+	model: type,
+	def: typeDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.all, value: 'all' },
+		{ label: i18n.ts.unused, value: 'unused' },
+		{ label: i18n.ts.used, value: 'used' },
+		{ label: i18n.ts.expired, value: 'expired' },
+	],
+	initialValue: 'all',
+});
+const {
+	model: sort,
+	def: sortDef,
+} = useMkSelect({
+	items: [
+		{ label: `${i18n.ts.createdAt} (${i18n.ts.ascendingOrder})`, value: '+createdAt' },
+		{ label: `${i18n.ts.createdAt} (${i18n.ts.descendingOrder})`, value: '-createdAt' },
+		{ label: `${i18n.ts.usedAt} (${i18n.ts.ascendingOrder})`, value: '+usedAt' },
+		{ label: `${i18n.ts.usedAt} (${i18n.ts.descendingOrder})`, value: '-usedAt' },
+	],
+	initialValue: '+createdAt',
+});
 
 const paginator = markRaw(new Paginator('admin/invite/list', {
 	limit: 10,
diff --git a/packages/frontend/src/pages/admin/moderation.vue b/packages/frontend/src/pages/admin/moderation.vue
index 435dd9c462..a11278b68a 100644
--- a/packages/frontend/src/pages/admin/moderation.vue
+++ b/packages/frontend/src/pages/admin/moderation.vue
@@ -25,18 +25,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</SearchMarker>
 
 				<SearchMarker :keywords="['ugc', 'content', 'visibility', 'visitor', 'guest']">
-					<MkSelect
-						v-model="ugcVisibilityForVisitor" :items="[{
-							value: 'all',
-							label: i18n.ts._serverSettings._userGeneratedContentsVisibilityForVisitor.all,
-						}, {
-							value: 'local',
-							label: i18n.ts._serverSettings._userGeneratedContentsVisibilityForVisitor.localOnly + ' (' + i18n.ts.recommended + ')',
-						}, {
-							value: 'none',
-							label: i18n.ts._serverSettings._userGeneratedContentsVisibilityForVisitor.none,
-						}] as const" @update:modelValue="onChange_ugcVisibilityForVisitor"
-					>
+					<MkSelect v-model="ugcVisibilityForVisitor" :items="ugcVisibilityForVisitorDef" @update:modelValue="onChange_ugcVisibilityForVisitor">
 						<template #label><SearchLabel>{{ i18n.ts._serverSettings.userGeneratedContentsVisibilityForVisitor }}</SearchLabel></template>
 						<template #caption>
 							<div><SearchText>{{ i18n.ts._serverSettings.userGeneratedContentsVisibilityForVisitor_description }}</SearchText></div>
@@ -176,6 +165,7 @@ import { misskeyApi } from '@/utility/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePage } from '@/page.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import MkButton from '@/components/MkButton.vue';
 import FormLink from '@/components/form/link.vue';
 import MkFolder from '@/components/MkFolder.vue';
@@ -185,7 +175,17 @@ const meta = await misskeyApi('admin/meta');
 
 const enableRegistration = ref(!meta.disableRegistration);
 const emailRequiredForSignup = ref(meta.emailRequiredForSignup);
-const ugcVisibilityForVisitor = ref(meta.ugcVisibilityForVisitor);
+const {
+	model: ugcVisibilityForVisitor,
+	def: ugcVisibilityForVisitorDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts._serverSettings._userGeneratedContentsVisibilityForVisitor.all, value: 'all' },
+		{ label: i18n.ts._serverSettings._userGeneratedContentsVisibilityForVisitor.localOnly, value: 'local' },
+		{ label: i18n.ts._serverSettings._userGeneratedContentsVisibilityForVisitor.none, value: 'none' },
+	],
+	initialValue: meta.ugcVisibilityForVisitor,
+});
 const sensitiveWords = ref(meta.sensitiveWords.join('\n'));
 const prohibitedWords = ref(meta.prohibitedWords.join('\n'));
 const prohibitedWordsForNameOfUser = ref(meta.prohibitedWordsForNameOfUser.join('\n'));
@@ -221,7 +221,7 @@ function onChange_emailRequiredForSignup(value: boolean) {
 	});
 }
 
-function onChange_ugcVisibilityForVisitor(value: Misskey.entities.AdminUpdateMetaRequest['ugcVisibilityForVisitor']) {
+function onChange_ugcVisibilityForVisitor(value: typeof ugcVisibilityForVisitor.value) {
 	os.apiWithDialog('admin/update-meta', {
 		ugcVisibilityForVisitor: value,
 	}).then(() => {
diff --git a/packages/frontend/src/pages/admin/modlog.vue b/packages/frontend/src/pages/admin/modlog.vue
index 08bdc8d254..cb75be7edd 100644
--- a/packages/frontend/src/pages/admin/modlog.vue
+++ b/packages/frontend/src/pages/admin/modlog.vue
@@ -8,10 +8,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<div class="_spacer" style="--MI_SPACER-w: 900px;">
 		<div class="_gaps">
 			<MkPaginationControl :paginator="paginator" canFilter>
-				<MkSelect v-model="type" style="margin: 0; flex: 1;">
+				<MkSelect v-model="type" :items="typeDef" style="margin: 0; flex: 1;">
 					<template #label>{{ i18n.ts.type }}</template>
-					<option :value="null">{{ i18n.ts.all }}</option>
-					<option v-for="t in Misskey.moderationLogTypes" :key="t" :value="t">{{ i18n.ts._moderationLogTypes[t] ?? t }}</option>
 				</MkSelect>
 
 				<MkInput v-model="moderatorId" style="margin: 0; flex: 1;">
@@ -54,12 +52,22 @@ import MkTl from '@/components/MkTl.vue';
 import { i18n } from '@/i18n.js';
 import { definePage } from '@/page.js';
 import { prefer } from '@/preferences.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import MkPullToRefresh from '@/components/MkPullToRefresh.vue';
 import MkButton from '@/components/MkButton.vue';
 import MkPaginationControl from '@/components/MkPaginationControl.vue';
 import { Paginator } from '@/utility/paginator.js';
 
-const type = ref<string | null>(null);
+const {
+	model: type,
+	def: typeDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.all, value: null },
+		...Misskey.moderationLogTypes.map(t => ({ label: i18n.ts._moderationLogTypes[t] ?? t, value: t })),
+	],
+	initialValue: null,
+});
 const moderatorId = ref('');
 
 const paginator = markRaw(new Paginator('admin/show-moderation-logs', {
diff --git a/packages/frontend/src/pages/admin/overview.heatmap.vue b/packages/frontend/src/pages/admin/overview.heatmap.vue
index 6192d6eb0f..5edc01404c 100644
--- a/packages/frontend/src/pages/admin/overview.heatmap.vue
+++ b/packages/frontend/src/pages/admin/overview.heatmap.vue
@@ -5,24 +5,30 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <div class="_panel" :class="$style.root">
-	<MkSelect v-model="src" style="margin: 0 0 12px 0;" small>
-		<option value="active-users">Active users</option>
-		<option value="notes">Notes</option>
-		<option value="ap-requests-inbox-received">AP Requests: inboxReceived</option>
-		<option value="ap-requests-deliver-succeeded">AP Requests: deliverSucceeded</option>
-		<option value="ap-requests-deliver-failed">AP Requests: deliverFailed</option>
+	<MkSelect v-model="src" :items="srcDef" style="margin: 0 0 12px 0;" small>
 	</MkSelect>
 	<MkHeatmap :src="src"/>
 </div>
 </template>
 
 <script lang="ts" setup>
-import { ref } from 'vue';
 import MkHeatmap from '@/components/MkHeatmap.vue';
 import MkSelect from '@/components/MkSelect.vue';
-import type { HeatmapSource } from '@/components/MkHeatmap.vue';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 
-const src = ref<HeatmapSource>('active-users');
+const {
+	model: src,
+	def: srcDef,
+} = useMkSelect({
+	items: [
+		{ label: 'Active users', value: 'active-users' },
+		{ label: 'Notes', value: 'notes' },
+		{ label: 'AP Requests: inboxReceived', value: 'ap-requests-inbox-received' },
+		{ label: 'AP Requests: deliverSucceeded', value: 'ap-requests-deliver-succeeded' },
+		{ label: 'AP Requests: deliverFailed', value: 'ap-requests-deliver-failed' },
+	],
+	initialValue: 'active-users',
+});
 </script>
 
 <style lang="scss" module>
diff --git a/packages/frontend/src/pages/admin/roles.editor.vue b/packages/frontend/src/pages/admin/roles.editor.vue
index 66004a44bb..e10eb1163e 100644
--- a/packages/frontend/src/pages/admin/roles.editor.vue
+++ b/packages/frontend/src/pages/admin/roles.editor.vue
@@ -30,19 +30,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<template #caption>{{ i18n.ts._role.descriptionOfDisplayOrder }}</template>
 	</MkInput>
 
-	<MkSelect v-model="rolePermission" :readonly="readonly">
+	<MkSelect v-model="rolePermission" :items="rolePermissionDef" :readonly="readonly">
 		<template #label><i class="ti ti-shield-lock"></i> {{ i18n.ts._role.permission }}</template>
 		<template #caption><div v-html="i18n.ts._role.descriptionOfPermission.replaceAll('\n', '<br>')"></div></template>
-		<option value="normal">{{ i18n.ts.normalUser }}</option>
-		<option value="moderator">{{ i18n.ts.moderator }}</option>
-		<option value="administrator">{{ i18n.ts.administrator }}</option>
 	</MkSelect>
 
-	<MkSelect v-model="role.target" :readonly="readonly">
+	<MkSelect v-model="role.target" :items="[{ label: i18n.ts._role.manual, value: 'manual' }, { label: i18n.ts._role.conditional, value: 'conditional' }]" :readonly="readonly">
 		<template #label><i class="ti ti-users"></i> {{ i18n.ts._role.assignTarget }}</template>
 		<template #caption><div v-html="i18n.ts._role.descriptionOfAssignTarget.replaceAll('\n', '<br>')"></div></template>
-		<option value="manual">{{ i18n.ts._role.manual }}</option>
-		<option value="conditional">{{ i18n.ts._role.conditional }}</option>
 	</MkSelect>
 
 	<MkFolder v-if="role.target === 'conditional'" defaultOpen>
@@ -176,11 +171,17 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<MkSwitch v-model="role.policies.chatAvailability.useDefault" :readonly="readonly">
 						<template #label>{{ i18n.ts._role.useBaseValue }}</template>
 					</MkSwitch>
-					<MkSelect v-model="role.policies.chatAvailability.value" :disabled="role.policies.chatAvailability.useDefault" :readonly="readonly">
+					<MkSelect
+						v-model="role.policies.chatAvailability.value"
+						:items="[
+							{ label: i18n.ts.enabled, value: 'available' },
+							{ label: i18n.ts.readonly, value: 'readonly' },
+							{ label: i18n.ts.disabled, value: 'unavailable' },
+						]"
+						:disabled="role.policies.chatAvailability.useDefault"
+						:readonly="readonly"
+					>
 						<template #label>{{ i18n.ts.enable }}</template>
-						<option value="available">{{ i18n.ts.enabled }}</option>
-						<option value="readonly">{{ i18n.ts.readonly }}</option>
-						<option value="unavailable">{{ i18n.ts.disabled }}</option>
 					</MkSelect>
 					<MkRange v-model="role.policies.chatAvailability.priority" :min="0" :max="2" :step="1" easing :textConverter="(v) => v === 0 ? i18n.ts._role._priority.low : v === 1 ? i18n.ts._role._priority.middle : v === 2 ? i18n.ts._role._priority.high : ''">
 						<template #label>{{ i18n.ts._role.priority }}</template>
@@ -841,6 +842,7 @@ import FormSlot from '@/components/form/slot.vue';
 import { i18n } from '@/i18n.js';
 import { instance } from '@/instance.js';
 import { deepClone } from '@/utility/clone.js';
+import type { MkSelectItem, GetMkSelectValueTypesFromDef } from '@/components/MkSelect.vue';
 
 const emit = defineEmits<{
 	(ev: 'update:modelValue', v: any): void;
@@ -870,11 +872,17 @@ function updateAvatarDecorationLimit(value: string | number) {
 	role.value.policies.avatarDecorationLimit.value = limited;
 }
 
-const rolePermission = computed({
+const rolePermissionDef = [
+	{ label: i18n.ts.normalUser, value: 'normal' },
+	{ label: i18n.ts.moderator, value: 'moderator' },
+	{ label: i18n.ts.administrator, value: 'administrator' },
+] as const satisfies MkSelectItem[];
+
+const rolePermission = computed<GetMkSelectValueTypesFromDef<typeof rolePermissionDef>>({
 	get: () => role.value.isAdministrator ? 'administrator' : role.value.isModerator ? 'moderator' : 'normal',
 	set: (val) => {
-		role.value.isAdministrator = val === 'administrator';
-		role.value.isModerator = val === 'moderator';
+		role.value.isAdministrator = (val === 'administrator');
+		role.value.isModerator = (val === 'moderator');
 	},
 });
 
diff --git a/packages/frontend/src/pages/admin/roles.role.vue b/packages/frontend/src/pages/admin/roles.role.vue
index 8e83cdb667..2e249eee50 100644
--- a/packages/frontend/src/pages/admin/roles.role.vue
+++ b/packages/frontend/src/pages/admin/roles.role.vue
@@ -115,15 +115,15 @@ async function assign() {
 	const { canceled: canceled2, result: period } = await os.select({
 		title: i18n.ts.period + ': ' + role.name,
 		items: [{
-			value: 'indefinitely', text: i18n.ts.indefinitely,
+			value: 'indefinitely', label: i18n.ts.indefinitely,
 		}, {
-			value: 'oneHour', text: i18n.ts.oneHour,
+			value: 'oneHour', label: i18n.ts.oneHour,
 		}, {
-			value: 'oneDay', text: i18n.ts.oneDay,
+			value: 'oneDay', label: i18n.ts.oneDay,
 		}, {
-			value: 'oneWeek', text: i18n.ts.oneWeek,
+			value: 'oneWeek', label: i18n.ts.oneWeek,
 		}, {
-			value: 'oneMonth', text: i18n.ts.oneMonth,
+			value: 'oneMonth', label: i18n.ts.oneMonth,
 		}],
 		default: 'indefinitely',
 	});
diff --git a/packages/frontend/src/pages/admin/roles.vue b/packages/frontend/src/pages/admin/roles.vue
index 6483bf16a8..7a49860b2d 100644
--- a/packages/frontend/src/pages/admin/roles.vue
+++ b/packages/frontend/src/pages/admin/roles.vue
@@ -52,11 +52,15 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<MkFolder v-if="matchQuery([i18n.ts._role._options.chatAvailability, 'chatAvailability'])">
 						<template #label>{{ i18n.ts._role._options.chatAvailability }}</template>
 						<template #suffix>{{ policies.chatAvailability === 'available' ? i18n.ts.yes : policies.chatAvailability === 'readonly' ? i18n.ts.readonly : i18n.ts.no }}</template>
-						<MkSelect v-model="policies.chatAvailability">
+						<MkSelect
+							v-model="policies.chatAvailability"
+							:items="[
+								{ label: i18n.ts.enabled, value: 'available' },
+								{ label: i18n.ts.readonly, value: 'readonly' },
+								{ label: i18n.ts.disabled, value: 'unavailable' },
+							]"
+						>
 							<template #label>{{ i18n.ts.enable }}</template>
-							<option value="available">{{ i18n.ts.enabled }}</option>
-							<option value="readonly">{{ i18n.ts.readonly }}</option>
-							<option value="unavailable">{{ i18n.ts.disabled }}</option>
 						</MkSelect>
 					</MkFolder>
 
diff --git a/packages/frontend/src/pages/admin/users.vue b/packages/frontend/src/pages/admin/users.vue
index 7cbaeba8c7..2f7ecca521 100644
--- a/packages/frontend/src/pages/admin/users.vue
+++ b/packages/frontend/src/pages/admin/users.vue
@@ -11,26 +11,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkButton style="margin-left: auto" @click="resetQuery">{{ i18n.ts.reset }}</MkButton>
 			</div>
 			<div :class="$style.inputs">
-				<MkSelect v-model="sort" style="flex: 1;">
+				<MkSelect v-model="sort" :items="sortDef" style="flex: 1;">
 					<template #label>{{ i18n.ts.sort }}</template>
-					<option value="-createdAt">{{ i18n.ts.registeredDate }} ({{ i18n.ts.ascendingOrder }})</option>
-					<option value="+createdAt">{{ i18n.ts.registeredDate }} ({{ i18n.ts.descendingOrder }})</option>
-					<option value="-updatedAt">{{ i18n.ts.lastUsed }} ({{ i18n.ts.ascendingOrder }})</option>
-					<option value="+updatedAt">{{ i18n.ts.lastUsed }} ({{ i18n.ts.descendingOrder }})</option>
 				</MkSelect>
-				<MkSelect v-model="state" style="flex: 1;">
+				<MkSelect v-model="state" :items="stateDef" style="flex: 1;">
 					<template #label>{{ i18n.ts.state }}</template>
-					<option value="all">{{ i18n.ts.all }}</option>
-					<option value="available">{{ i18n.ts.normal }}</option>
-					<option value="admin">{{ i18n.ts.administrator }}</option>
-					<option value="moderator">{{ i18n.ts.moderator }}</option>
-					<option value="suspended">{{ i18n.ts.suspend }}</option>
 				</MkSelect>
-				<MkSelect v-model="origin" style="flex: 1;">
+				<MkSelect v-model="origin" :items="originDef" style="flex: 1;">
 					<template #label>{{ i18n.ts.instance }}</template>
-					<option value="combined">{{ i18n.ts.all }}</option>
-					<option value="local">{{ i18n.ts.local }}</option>
-					<option value="remote">{{ i18n.ts.remote }}</option>
 				</MkSelect>
 			</div>
 			<div :class="$style.inputs">
@@ -67,23 +55,57 @@ import * as os from '@/os.js';
 import { lookupUser } from '@/utility/admin-lookup.js';
 import { i18n } from '@/i18n.js';
 import { definePage } from '@/page.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import MkUserCardMini from '@/components/MkUserCardMini.vue';
 import { dateString } from '@/filters/date.js';
 import { Paginator } from '@/utility/paginator.js';
 
 type SearchQuery = {
-	sort?: string;
-	state?: string;
-	origin?: string;
+	sort?: '-createdAt' | '+createdAt' | '-updatedAt' | '+updatedAt';
+	state?: 'all' | 'available' | 'admin' | 'moderator' | 'suspended';
+	origin?: 'combined' | 'local' | 'remote';
 	username?: string;
 	hostname?: string;
 };
 
 const storedQuery = JSON.parse(defaultMemoryStorage.getItem('admin-users-query') ?? '{}') as SearchQuery;
 
-const sort = ref(storedQuery.sort ?? '+createdAt');
-const state = ref(storedQuery.state ?? 'all');
-const origin = ref(storedQuery.origin ?? 'local');
+const {
+	model: sort,
+	def: sortDef,
+} = useMkSelect({
+	items: [
+		{ label: `${i18n.ts.registeredDate} (${i18n.ts.ascendingOrder})`, value: '-createdAt' },
+		{ label: `${i18n.ts.registeredDate} (${i18n.ts.descendingOrder})`, value: '+createdAt' },
+		{ label: `${i18n.ts.lastUsed} (${i18n.ts.ascendingOrder})`, value: '-updatedAt' },
+		{ label: `${i18n.ts.lastUsed} (${i18n.ts.descendingOrder})`, value: '+updatedAt' },
+	],
+	initialValue: storedQuery.sort ?? '+createdAt',
+});
+const {
+	model: state,
+	def: stateDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.all, value: 'all' },
+		{ label: i18n.ts.normal, value: 'available' },
+		{ label: i18n.ts.administrator, value: 'admin' },
+		{ label: i18n.ts.moderator, value: 'moderator' },
+		{ label: i18n.ts.suspend, value: 'suspended' },
+	],
+	initialValue: storedQuery.state ?? 'all',
+});
+const {
+	model: origin,
+	def: originDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.all, value: 'combined' },
+		{ label: i18n.ts.local, value: 'local' },
+		{ label: i18n.ts.remote, value: 'remote' },
+	],
+	initialValue: storedQuery.origin ?? 'local',
+});
 const searchUsername = ref(storedQuery.username ?? '');
 const searchHost = ref(storedQuery.hostname ?? '');
 const paginator = markRaw(new Paginator('admin/show-users', {
diff --git a/packages/frontend/src/pages/avatar-decoration-edit-dialog.vue b/packages/frontend/src/pages/avatar-decoration-edit-dialog.vue
index ddc4e89ef1..a8ce527523 100644
--- a/packages/frontend/src/pages/avatar-decoration-edit-dialog.vue
+++ b/packages/frontend/src/pages/avatar-decoration-edit-dialog.vue
@@ -101,12 +101,12 @@ async function addRole() {
 	const roles = await misskeyApi('admin/roles/list');
 	const currentRoleIds = rolesThatCanBeUsedThisDecoration.value.map(x => x.id);
 
-	const { canceled, result: role } = await os.select({
-		items: roles.filter(r => r.isPublic).filter(r => !currentRoleIds.includes(r.id)).map(r => ({ text: r.name, value: r })),
+	const { canceled, result: roleId } = await os.select({
+		items: roles.filter(r => r.isPublic).filter(r => !currentRoleIds.includes(r.id)).map(r => ({ label: r.name, value: r.id })),
 	});
-	if (canceled || role == null) return;
+	if (canceled || roleId == null) return;
 
-	rolesThatCanBeUsedThisDecoration.value.push(role);
+	rolesThatCanBeUsedThisDecoration.value.push(roles.find(r => r.id === roleId)!);
 }
 
 async function removeRole(role, ev) {
diff --git a/packages/frontend/src/pages/debug.vue b/packages/frontend/src/pages/debug.vue
index 5cd68c2c3a..9c0761f0b1 100644
--- a/packages/frontend/src/pages/debug.vue
+++ b/packages/frontend/src/pages/debug.vue
@@ -11,11 +11,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkResult v-if="resultType === 'notFound'" type="notFound"/>
 			<MkResult v-if="resultType === 'error'" type="error"/>
 			<MkSelect
-				v-model="resultType" :items="[
-					{ label: 'empty', value: 'empty' },
-					{ label: 'notFound', value: 'notFound' },
-					{ label: 'error', value: 'error' },
-				]"
+				v-model="resultType" :items="resultTypeDef"
 			></MkSelect>
 
 			<MkSystemIcon v-if="iconType === 'info'" type="info" style="width: 150px;"/>
@@ -25,14 +21,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkSystemIcon v-if="iconType === 'error'" type="error" style="width: 150px;"/>
 			<MkSystemIcon v-if="iconType === 'waiting'" type="waiting" style="width: 150px;"/>
 			<MkSelect
-				v-model="iconType" :items="[
-					{ label: 'info', value: 'info' },
-					{ label: 'question', value: 'question' },
-					{ label: 'success', value: 'success' },
-					{ label: 'warn', value: 'warn' },
-					{ label: 'error', value: 'error' },
-					{ label: 'waiting', value: 'waiting' },
-				]"
+				v-model="iconType" :items="iconTypeDef"
 			></MkSelect>
 
 			<div class="_buttons">
@@ -56,10 +45,34 @@ import MkKeyValue from '@/components/MkKeyValue.vue';
 import MkLink from '@/components/MkLink.vue';
 import MkSelect from '@/components/MkSelect.vue';
 import MkButton from '@/components/MkButton.vue';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import * as os from '@/os.js';
 
-const resultType = ref('empty');
-const iconType = ref('info');
+const {
+	model: resultType,
+	def: resultTypeDef,
+} = useMkSelect({
+	items: [
+		{ label: 'empty', value: 'empty' },
+		{ label: 'notFound', value: 'notFound' },
+		{ label: 'error', value: 'error' },
+	],
+	initialValue: 'empty',
+});
+const {
+	model: iconType,
+	def: iconTypeDef,
+} = useMkSelect({
+	items: [
+		{ label: 'info', value: 'info' },
+		{ label: 'question', value: 'question' },
+		{ label: 'success', value: 'success' },
+		{ label: 'warn', value: 'warn' },
+		{ label: 'error', value: 'error' },
+		{ label: 'waiting', value: 'waiting' },
+	],
+	initialValue: 'info',
+});
 
 definePage(() => ({
 	title: 'DEBUG ROOM',
diff --git a/packages/frontend/src/pages/drop-and-fusion.vue b/packages/frontend/src/pages/drop-and-fusion.vue
index c1a8b992b7..0a69dbdd70 100644
--- a/packages/frontend/src/pages/drop-and-fusion.vue
+++ b/packages/frontend/src/pages/drop-and-fusion.vue
@@ -23,12 +23,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<div class="_woodenFrame" style="text-align: center;">
 					<div class="_woodenFrameInner">
 						<div class="_gaps" style="padding: 16px;">
-							<MkSelect v-model="gameMode">
-								<option value="normal">NORMAL</option>
-								<option value="square">SQUARE</option>
-								<option value="yen">YEN</option>
-								<option value="sweets">SWEETS</option>
-								<!--<option value="space">SPACE</option>-->
+							<MkSelect v-model="gameMode" :items="gameModeDef">
 							</MkSelect>
 							<MkButton primary gradate large rounded inline @click="start">{{ i18n.ts.start }}</MkButton>
 						</div>
@@ -92,11 +87,24 @@ import XGame from './drop-and-fusion.game.vue';
 import { definePage } from '@/page.js';
 import MkButton from '@/components/MkButton.vue';
 import { i18n } from '@/i18n.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import MkSelect from '@/components/MkSelect.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import { misskeyApiGet } from '@/utility/misskey-api.js';
 
-const gameMode = ref<'normal' | 'square' | 'yen' | 'sweets' | 'space'>('normal');
+const {
+	model: gameMode,
+	def: gameModeDef,
+} = useMkSelect({
+	items: [
+		{ label: 'NORMAL', value: 'normal' },
+		{ label: 'SQUARE', value: 'square' },
+		{ label: 'YEN', value: 'yen' },
+		{ label: 'SWEETS', value: 'sweets' },
+		//{ label: 'SPACE', value: 'space' },
+	],
+	initialValue: 'normal',
+});
 const gameStarted = ref(false);
 const mute = ref(false);
 const ranking = ref<Misskey.entities.BubbleGameRankingResponse | null>(null);
diff --git a/packages/frontend/src/pages/emoji-edit-dialog.vue b/packages/frontend/src/pages/emoji-edit-dialog.vue
index 033e3376a5..ea4863950d 100644
--- a/packages/frontend/src/pages/emoji-edit-dialog.vue
+++ b/packages/frontend/src/pages/emoji-edit-dialog.vue
@@ -135,12 +135,12 @@ async function addRole() {
 	const roles = await misskeyApi('admin/roles/list');
 	const currentRoleIds = rolesThatCanBeUsedThisEmojiAsReaction.value.map(x => x.id);
 
-	const { canceled, result: role } = await os.select({
-		items: roles.filter(r => r.isPublic).filter(r => !currentRoleIds.includes(r.id)).map(r => ({ text: r.name, value: r })),
+	const { canceled, result: roleId } = await os.select({
+		items: roles.filter(r => r.isPublic).filter(r => !currentRoleIds.includes(r.id)).map(r => ({ label: r.name, value: r.id })),
 	});
-	if (canceled || role == null) return;
+	if (canceled || roleId == null) return;
 
-	rolesThatCanBeUsedThisEmojiAsReaction.value.push(role);
+	rolesThatCanBeUsedThisEmojiAsReaction.value.push(roles.find(r => r.id === roleId)!);
 }
 
 async function removeRole(role: Misskey.entities.RoleLite, ev: Event) {
diff --git a/packages/frontend/src/pages/flash/flash-edit.vue b/packages/frontend/src/pages/flash/flash-edit.vue
index 81b9d1cead..b3e8e88c23 100644
--- a/packages/frontend/src/pages/flash/flash-edit.vue
+++ b/packages/frontend/src/pages/flash/flash-edit.vue
@@ -10,11 +10,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkInput v-model="title">
 				<template #label>{{ i18n.ts._play.title }}</template>
 			</MkInput>
-			<MkSelect v-model="visibility">
+			<MkSelect v-model="visibility" :items="visibilityDef">
 				<template #label>{{ i18n.ts.visibility }}</template>
 				<template #caption>{{ i18n.ts._play.visibilityDescription }}</template>
-				<option :key="'public'" :value="'public'">{{ i18n.ts.public }}</option>
-				<option :key="'private'" :value="'private'">{{ i18n.ts.private }}</option>
 			</MkSelect>
 			<MkTextarea v-model="summary" :mfmAutocomplete="true" :mfmPreview="true">
 				<template #label>{{ i18n.ts._play.summary }}</template>
@@ -52,6 +50,7 @@ import MkTextarea from '@/components/MkTextarea.vue';
 import MkCodeEditor from '@/components/MkCodeEditor.vue';
 import MkInput from '@/components/MkInput.vue';
 import MkSelect from '@/components/MkSelect.vue';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import { useRouter } from '@/router.js';
 
 const PRESET_DEFAULT = `/// @ ${AISCRIPT_VERSION}
@@ -384,7 +383,16 @@ if (props.id) {
 const title = ref(flash.value?.title ?? 'New Play');
 const summary = ref(flash.value?.summary ?? '');
 const permissions = ref([]); // not implemented yet
-const visibility = ref<'private' | 'public'>(flash.value?.visibility ?? 'public');
+const {
+	model: visibility,
+	def: visibilityDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.public, value: 'public' },
+		{ label: i18n.ts.private, value: 'private' },
+	],
+	initialValue: flash.value?.visibility ?? 'public',
+});
 const script = ref(flash.value?.script ?? PRESET_DEFAULT);
 
 function selectPreset(ev: MouseEvent) {
diff --git a/packages/frontend/src/pages/instance-info.vue b/packages/frontend/src/pages/instance-info.vue
index 473207fe6e..61a40202c0 100644
--- a/packages/frontend/src/pages/instance-info.vue
+++ b/packages/frontend/src/pages/instance-info.vue
@@ -92,18 +92,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<div v-else-if="tab === 'chart'" class="_gaps_m">
 			<div>
 				<div :class="$style.selects">
-					<MkSelect v-model="chartSrc" style="margin: 0 10px 0 0; flex: 1;">
-						<option value="instance-requests">{{ i18n.ts._instanceCharts.requests }}</option>
-						<option value="instance-users">{{ i18n.ts._instanceCharts.users }}</option>
-						<option value="instance-users-total">{{ i18n.ts._instanceCharts.usersTotal }}</option>
-						<option value="instance-notes">{{ i18n.ts._instanceCharts.notes }}</option>
-						<option value="instance-notes-total">{{ i18n.ts._instanceCharts.notesTotal }}</option>
-						<option value="instance-ff">{{ i18n.ts._instanceCharts.ff }}</option>
-						<option value="instance-ff-total">{{ i18n.ts._instanceCharts.ffTotal }}</option>
-						<option value="instance-drive-usage">{{ i18n.ts._instanceCharts.cacheSize }}</option>
-						<option value="instance-drive-usage-total">{{ i18n.ts._instanceCharts.cacheSizeTotal }}</option>
-						<option value="instance-drive-files">{{ i18n.ts._instanceCharts.files }}</option>
-						<option value="instance-drive-files-total">{{ i18n.ts._instanceCharts.filesTotal }}</option>
+					<MkSelect v-model="chartSrc" :items="chartSrcDef" style="margin: 0 10px 0 0; flex: 1;">
 					</MkSelect>
 				</div>
 				<div>
@@ -154,6 +143,7 @@ import MkUserCardMini from '@/components/MkUserCardMini.vue';
 import MkPagination from '@/components/MkPagination.vue';
 import { getProxiedImageUrlNullable } from '@/utility/media-proxy.js';
 import { dateString } from '@/filters/date.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import MkTextarea from '@/components/MkTextarea.vue';
 import { Paginator } from '@/utility/paginator.js';
 
@@ -163,7 +153,25 @@ const props = defineProps<{
 
 const tab = ref('overview');
 
-const chartSrc = ref<ChartSrc>('instance-requests');
+const {
+	model: chartSrc,
+	def: chartSrcDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts._instanceCharts.requests, value: 'instance-requests' },
+		{ label: i18n.ts._instanceCharts.users, value: 'instance-users' },
+		{ label: i18n.ts._instanceCharts.usersTotal, value: 'instance-users-total' },
+		{ label: i18n.ts._instanceCharts.notes, value: 'instance-notes' },
+		{ label: i18n.ts._instanceCharts.notesTotal, value: 'instance-notes-total' },
+		{ label: i18n.ts._instanceCharts.ff, value: 'instance-ff' },
+		{ label: i18n.ts._instanceCharts.ffTotal, value: 'instance-ff-total' },
+		{ label: i18n.ts._instanceCharts.cacheSize, value: 'instance-drive-usage' },
+		{ label: i18n.ts._instanceCharts.cacheSizeTotal, value: 'instance-drive-usage-total' },
+		{ label: i18n.ts._instanceCharts.files, value: 'instance-drive-files' },
+		{ label: i18n.ts._instanceCharts.filesTotal, value: 'instance-drive-files-total' },
+	],
+	initialValue: 'instance-requests',
+});
 const meta = ref<Misskey.entities.AdminMetaResponse | null>(null);
 const instance = ref<Misskey.entities.FederationInstance | null>(null);
 const suspensionState = ref<'none' | 'manuallySuspended' | 'goneSuspended' | 'autoSuspendedForNotResponding' | 'softwareSuspended'>('none');
diff --git a/packages/frontend/src/pages/page-editor/common.ts b/packages/frontend/src/pages/page-editor/common.ts
index 420c8fc967..64cd9cde7a 100644
--- a/packages/frontend/src/pages/page-editor/common.ts
+++ b/packages/frontend/src/pages/page-editor/common.ts
@@ -4,12 +4,13 @@
  */
 
 import { i18n } from '@/i18n.js';
+import type { MkSelectItem } from '@/components/MkSelect.vue';
 
 export function getPageBlockList() {
 	return [
-		{ value: 'section', text: i18n.ts._pages.blocks.section },
-		{ value: 'text', text: i18n.ts._pages.blocks.text },
-		{ value: 'image', text: i18n.ts._pages.blocks.image },
-		{ value: 'note', text: i18n.ts._pages.blocks.note },
-	];
+		{ value: 'section', label: i18n.ts._pages.blocks.section },
+		{ value: 'text', label: i18n.ts._pages.blocks.text },
+		{ value: 'image', label: i18n.ts._pages.blocks.image },
+		{ value: 'note', label: i18n.ts._pages.blocks.note },
+	] as const satisfies MkSelectItem[];
 }
diff --git a/packages/frontend/src/pages/page-editor/page-editor.vue b/packages/frontend/src/pages/page-editor/page-editor.vue
index 3c51f25676..3dd83b25c5 100644
--- a/packages/frontend/src/pages/page-editor/page-editor.vue
+++ b/packages/frontend/src/pages/page-editor/page-editor.vue
@@ -30,10 +30,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 				<MkSwitch v-model="alignCenter">{{ i18n.ts._pages.alignCenter }}</MkSwitch>
 
-				<MkSelect v-model="font">
+				<MkSelect v-model="font" :items="fontDef">
 					<template #label>{{ i18n.ts._pages.font }}</template>
-					<option value="serif">{{ i18n.ts._pages.fontSerif }}</option>
-					<option value="sans-serif">{{ i18n.ts._pages.fontSansSerif }}</option>
 				</MkSelect>
 
 				<MkSwitch v-model="hideTitleWhenPinned">{{ i18n.ts._pages.hideTitleWhenPinned }}</MkSwitch>
@@ -76,6 +74,7 @@ import { i18n } from '@/i18n.js';
 import { definePage } from '@/page.js';
 import { $i } from '@/i.js';
 import { mainRouter } from '@/router.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import { getPageBlockList } from '@/pages/page-editor/common.js';
 
 const props = defineProps<{
@@ -95,7 +94,16 @@ const summary = ref<string | null>(null);
 const name = ref(Date.now().toString());
 const eyeCatchingImage = ref<Misskey.entities.DriveFile | null>(null);
 const eyeCatchingImageId = ref<string | null>(null);
-const font = ref<'sans-serif' | 'serif'>('sans-serif');
+const {
+	model: font,
+	def: fontDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts._pages.fontSansSerif, value: 'sans-serif' },
+		{ label: i18n.ts._pages.fontSerif, value: 'serif' },
+	],
+	initialValue: 'sans-serif',
+});
 const content = ref<Misskey.entities.Page['content']>([]);
 const alignCenter = ref(false);
 const hideTitleWhenPinned = ref(false);
diff --git a/packages/frontend/src/pages/settings/drive-cleaner.vue b/packages/frontend/src/pages/settings/drive-cleaner.vue
index 63b3c95233..57192c0fb7 100644
--- a/packages/frontend/src/pages/settings/drive-cleaner.vue
+++ b/packages/frontend/src/pages/settings/drive-cleaner.vue
@@ -5,9 +5,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <div class="_gaps">
-	<MkSelect v-model="sortModeSelect">
+	<MkSelect v-model="sortModeSelect" :items="sortModeSelectDef">
 		<template #label>{{ i18n.ts.sort }}</template>
-		<option v-for="x in sortOptions" :key="x.value" :value="x.value">{{ x.displayName }}</option>
 	</MkSelect>
 	<div v-if="!fetching">
 		<MkPagination v-slot="{items}" :paginator="paginator">
@@ -60,6 +59,7 @@ import { i18n } from '@/i18n.js';
 import bytes from '@/filters/bytes.js';
 import { definePage } from '@/page.js';
 import MkSelect from '@/components/MkSelect.vue';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import { getDriveFileMenu } from '@/utility/get-drive-file-menu.js';
 import { Paginator } from '@/utility/paginator.js';
 
@@ -69,15 +69,19 @@ const paginator = markRaw(new Paginator('drive/files', {
 	computedParams: computed(() => ({ sort: sortMode.value })),
 }));
 
-const sortOptions = [
-	{ value: 'sizeDesc', displayName: i18n.ts._drivecleaner.orderBySizeDesc },
-	{ value: 'createdAtAsc', displayName: i18n.ts._drivecleaner.orderByCreatedAtAsc },
-];
-
 const capacity = ref<number>(0);
 const usage = ref<number>(0);
 const fetching = ref(true);
-const sortModeSelect = ref('sizeDesc');
+const {
+	model: sortModeSelect,
+	def: sortModeSelectDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts._drivecleaner.orderBySizeDesc, value: 'sizeDesc' },
+		{ label: i18n.ts._drivecleaner.orderByCreatedAtAsc, value: 'createdAtAsc' },
+	],
+	initialValue: 'sizeDesc',
+});
 
 fetchDriveInfo();
 
diff --git a/packages/frontend/src/pages/settings/emoji-palette.vue b/packages/frontend/src/pages/settings/emoji-palette.vue
index 5ff5f45a2f..34bf1c14af 100644
--- a/packages/frontend/src/pages/settings/emoji-palette.vue
+++ b/packages/frontend/src/pages/settings/emoji-palette.vue
@@ -36,20 +36,16 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<div class="_gaps_m">
 				<SearchMarker :keywords="['main', 'palette']">
 					<MkPreferenceContainer k="emojiPaletteForMain">
-						<MkSelect v-model="emojiPaletteForMain">
+						<MkSelect v-model="emojiPaletteForMain" :items="emojiPaletteForMainDef">
 							<template #label><SearchLabel>{{ i18n.ts._emojiPalette.paletteForMain }}</SearchLabel></template>
-							<option key="-" :value="null">({{ i18n.ts.auto }})</option>
-							<option v-for="palette in prefer.r.emojiPalettes.value" :key="palette.id" :value="palette.id">{{ palette.name === '' ? '(' + i18n.ts.noName + ')' : palette.name }}</option>
 						</MkSelect>
 					</MkPreferenceContainer>
 				</SearchMarker>
 
 				<SearchMarker :keywords="['reaction', 'palette']">
 					<MkPreferenceContainer k="emojiPaletteForReaction">
-						<MkSelect v-model="emojiPaletteForReaction">
+						<MkSelect v-model="emojiPaletteForReaction" :items="emojiPaletteForReactionDef">
 							<template #label><SearchLabel>{{ i18n.ts._emojiPalette.paletteForReaction }}</SearchLabel></template>
-							<option key="-" :value="null">({{ i18n.ts.auto }})</option>
-							<option v-for="palette in prefer.r.emojiPalettes.value" :key="palette.id" :value="palette.id">{{ palette.name === '' ? '(' + i18n.ts.noName + ')' : palette.name }}</option>
 						</MkSelect>
 					</MkPreferenceContainer>
 				</SearchMarker>
@@ -99,12 +95,13 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 					<SearchMarker :keywords="['emoji', 'picker', 'style']">
 						<MkPreferenceContainer k="emojiPickerStyle">
-							<MkSelect v-model="emojiPickerStyle">
+							<MkSelect v-model="emojiPickerStyle" :items="[
+								{ label: i18n.ts.auto, value: 'auto' },
+								{ label: i18n.ts.popup, value: 'popup' },
+								{ label: i18n.ts.drawer, value: 'drawer' },
+							]">
 								<template #label><SearchLabel>{{ i18n.ts.style }}</SearchLabel></template>
 								<template #caption>{{ i18n.ts.needReloadToApply }}</template>
-								<option value="auto">{{ i18n.ts.auto }}</option>
-								<option value="popup">{{ i18n.ts.popup }}</option>
-								<option value="drawer">{{ i18n.ts.drawer }}</option>
 							</MkSelect>
 						</MkPreferenceContainer>
 					</SearchMarker>
@@ -125,6 +122,7 @@ import MkRadios from '@/components/MkRadios.vue';
 import MkButton from '@/components/MkButton.vue';
 import FormSection from '@/components/form/section.vue';
 import MkSelect from '@/components/MkSelect.vue';
+import type { MkSelectItem } from '@/components/MkSelect.vue';
 import * as os from '@/os.js';
 import { i18n } from '@/i18n.js';
 import { definePage } from '@/page.js';
@@ -135,7 +133,21 @@ import MkSwitch from '@/components/MkSwitch.vue';
 import { emojiPicker } from '@/utility/emoji-picker.js';
 
 const emojiPaletteForReaction = prefer.model('emojiPaletteForReaction');
+const emojiPaletteForReactionDef = computed<MkSelectItem[]>(() => [
+	{ label: `(${i18n.ts.auto})`, value: null },
+	...prefer.s.emojiPalettes.map(palette => ({
+		label: palette.name === '' ? `(${i18n.ts.noName})` : palette.name,
+		value: palette.id,
+	})),
+]);
 const emojiPaletteForMain = prefer.model('emojiPaletteForMain');
+const emojiPaletteForMainDef = computed<MkSelectItem[]>(() => [
+	{ label: `(${i18n.ts.auto})`, value: null },
+	...prefer.s.emojiPalettes.map(palette => ({
+		label: palette.name === '' ? `(${i18n.ts.noName})` : palette.name,
+		value: palette.id,
+	})),
+]);
 const emojiPickerScale = prefer.model('emojiPickerScale');
 const emojiPickerWidth = prefer.model('emojiPickerWidth');
 const emojiPickerHeight = prefer.model('emojiPickerHeight');
diff --git a/packages/frontend/src/pages/settings/navbar.vue b/packages/frontend/src/pages/settings/navbar.vue
index f7c634b42e..c8cbc0977f 100644
--- a/packages/frontend/src/pages/settings/navbar.vue
+++ b/packages/frontend/src/pages/settings/navbar.vue
@@ -86,9 +86,9 @@ async function addItem() {
 	const { canceled, result: item } = await os.select({
 		title: i18n.ts.addItem,
 		items: [...menu.map(k => ({
-			value: k, text: navbarItemDef[k].title,
+			value: k, label: navbarItemDef[k].title,
 		})), {
-			value: '-', text: i18n.ts.divider,
+			value: '-', label: i18n.ts.divider,
 		}],
 	});
 	if (canceled || item == null) return;
diff --git a/packages/frontend/src/pages/settings/notifications.notification-config.vue b/packages/frontend/src/pages/settings/notifications.notification-config.vue
index 0ea415f673..78c3312c27 100644
--- a/packages/frontend/src/pages/settings/notifications.notification-config.vue
+++ b/packages/frontend/src/pages/settings/notifications.notification-config.vue
@@ -5,13 +5,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <div class="_gaps_m">
-	<MkSelect v-model="type">
-		<option v-for="type in props.configurableTypes ?? notificationConfigTypes" :key="type" :value="type">{{ notificationConfigTypesI18nMap[type] }}</option>
+	<MkSelect v-model="type" :items="typeDef">
 	</MkSelect>
 
-	<MkSelect v-if="type === 'list'" v-model="userListId">
+	<MkSelect v-if="type === 'list'" v-model="userListId" :items="userListIdDef">
 		<template #label>{{ i18n.ts.userList }}</template>
-		<option v-for="list in props.userLists" :key="list.id" :value="list.id">{{ list.name }}</option>
 	</MkSelect>
 
 	<div class="_buttons">
@@ -41,9 +39,10 @@ export type NotificationConfig = {
 
 <script lang="ts" setup>
 import * as Misskey from 'misskey-js';
-import { ref } from 'vue';
+import { ref, computed } from 'vue';
 import MkSelect from '@/components/MkSelect.vue';
 import MkButton from '@/components/MkButton.vue';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import { i18n } from '@/i18n.js';
 
 const props = defineProps<{
@@ -66,8 +65,26 @@ const notificationConfigTypesI18nMap: Record<typeof notificationConfigTypes[numb
 	never: i18n.ts.none,
 };
 
-const type = ref(props.value.type);
-const userListId = ref(props.value.type === 'list' ? props.value.userListId : null);
+const {
+	model: type,
+	def: typeDef,
+} = useMkSelect({
+	items: computed(() => (props.configurableTypes ?? notificationConfigTypes).map((t: NotificationConfig['type']) => ({
+		label: notificationConfigTypesI18nMap[t],
+		value: t,
+	}))),
+	initialValue: props.value.type,
+});
+const {
+	model: userListId,
+	def: userListIdDef,
+} = useMkSelect({
+	items: computed(() => props.userLists.map(list => ({
+		label: list.name,
+		value: list.id,
+	}))),
+	initialValue: props.value.type === 'list' ? props.value.userListId : null,
+});
 
 function save() {
 	emit('update', type.value === 'list' ? { type: type.value, userListId: userListId.value! } : { type: type.value });
diff --git a/packages/frontend/src/pages/settings/preferences.vue b/packages/frontend/src/pages/settings/preferences.vue
index ba35dd7f43..78f0891a58 100644
--- a/packages/frontend/src/pages/settings/preferences.vue
+++ b/packages/frontend/src/pages/settings/preferences.vue
@@ -18,9 +18,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 					<div class="_gaps_m">
 						<SearchMarker :keywords="['language']">
-							<MkSelect v-model="lang">
+							<MkSelect v-model="lang" :items="langs.map(x => ({ label: x[1], value: x[0] }))">
 								<template #label><SearchLabel>{{ i18n.ts.uiLanguage }}</SearchLabel></template>
-								<option v-for="x in langs" :key="x[0]" :value="x[0]">{{ x[1] }}</option>
 								<template #caption>
 									<I18n :src="i18n.ts.i18nInfo" tag="span">
 										<template #link>
@@ -272,22 +271,31 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 							<SearchMarker :keywords="['ticker', 'information', 'label', 'instance', 'server', 'host', 'federation']">
 								<MkPreferenceContainer k="instanceTicker">
-									<MkSelect v-if="instance.federation !== 'none'" v-model="instanceTicker">
+									<MkSelect
+										v-if="instance.federation !== 'none'"
+										v-model="instanceTicker"
+										:items="[
+											{ label: i18n.ts._instanceTicker.none, value: 'none' },
+											{ label: i18n.ts._instanceTicker.remote, value: 'remote' },
+											{ label: i18n.ts._instanceTicker.always, value: 'always' },
+										]"
+									>
 										<template #label><SearchLabel>{{ i18n.ts.instanceTicker }}</SearchLabel></template>
-										<option value="none">{{ i18n.ts._instanceTicker.none }}</option>
-										<option value="remote">{{ i18n.ts._instanceTicker.remote }}</option>
-										<option value="always">{{ i18n.ts._instanceTicker.always }}</option>
 									</MkSelect>
 								</MkPreferenceContainer>
 							</SearchMarker>
 
 							<SearchMarker :keywords="['attachment', 'image', 'photo', 'picture', 'media', 'thumbnail', 'nsfw', 'sensitive', 'display', 'show', 'hide', 'visibility']">
 								<MkPreferenceContainer k="nsfw">
-									<MkSelect v-model="nsfw">
+									<MkSelect
+										v-model="nsfw"
+										:items="[
+											{ label: i18n.ts._displayOfSensitiveMedia.respect, value: 'respect' },
+											{ label: i18n.ts._displayOfSensitiveMedia.ignore, value: 'ignore' },
+											{ label: i18n.ts._displayOfSensitiveMedia.force, value: 'force' },
+										]"
+									>
 										<template #label><SearchLabel>{{ i18n.ts.displayOfSensitiveMedia }}</SearchLabel></template>
-										<option value="respect">{{ i18n.ts._displayOfSensitiveMedia.respect }}</option>
-										<option value="ignore">{{ i18n.ts._displayOfSensitiveMedia.ignore }}</option>
-										<option value="force">{{ i18n.ts._displayOfSensitiveMedia.force }}</option>
 									</MkSelect>
 								</MkPreferenceContainer>
 							</SearchMarker>
@@ -339,11 +347,15 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 									<div class="_gaps_m">
 										<MkPreferenceContainer k="defaultNoteVisibility">
-											<MkSelect v-model="defaultNoteVisibility">
-												<option value="public">{{ i18n.ts._visibility.public }}</option>
-												<option value="home">{{ i18n.ts._visibility.home }}</option>
-												<option value="followers">{{ i18n.ts._visibility.followers }}</option>
-												<option value="specified">{{ i18n.ts._visibility.specified }}</option>
+											<MkSelect
+												v-model="defaultNoteVisibility"
+												:items="[
+													{ label: i18n.ts._visibility.public, value: 'public' },
+													{ label: i18n.ts._visibility.home, value: 'home' },
+													{ label: i18n.ts._visibility.followers, value: 'followers' },
+													{ label: i18n.ts._visibility.specified, value: 'specified' },
+												]"
+											>
 											</MkSelect>
 										</MkPreferenceContainer>
 
@@ -528,22 +540,30 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 						<SearchMarker :keywords="['menu', 'style', 'popup', 'drawer']">
 							<MkPreferenceContainer k="menuStyle">
-								<MkSelect v-model="menuStyle">
+								<MkSelect
+									v-model="menuStyle"
+									:items="[
+										{ label: i18n.ts.auto, value: 'auto' },
+										{ label: i18n.ts.popup, value: 'popup' },
+										{ label: i18n.ts.drawer, value: 'drawer' },
+									]"
+								>
 									<template #label><SearchLabel>{{ i18n.ts.menuStyle }}</SearchLabel></template>
-									<option value="auto">{{ i18n.ts.auto }}</option>
-									<option value="popup">{{ i18n.ts.popup }}</option>
-									<option value="drawer">{{ i18n.ts.drawer }}</option>
 								</MkSelect>
 							</MkPreferenceContainer>
 						</SearchMarker>
 
 						<SearchMarker :keywords="['contextmenu', 'system', 'native']">
 							<MkPreferenceContainer k="contextMenu">
-								<MkSelect v-model="contextMenu">
+								<MkSelect
+									v-model="contextMenu"
+									:items="[
+										{ label: i18n.ts._contextMenu.app, value: 'app' },
+										{ label: i18n.ts._contextMenu.appWithShift, value: 'appWithShift' },
+										{ label: i18n.ts._contextMenu.native, value: 'native' },
+									]"
+								>
 									<template #label><SearchLabel>{{ i18n.ts._contextMenu.title }}</SearchLabel></template>
-									<option value="app">{{ i18n.ts._contextMenu.app }}</option>
-									<option value="appWithShift">{{ i18n.ts._contextMenu.appWithShift }}</option>
-									<option value="native">{{ i18n.ts._contextMenu.native }}</option>
 								</MkSelect>
 							</MkPreferenceContainer>
 						</SearchMarker>
@@ -719,11 +739,15 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 						<SearchMarker :keywords="['server', 'disconnect', 'reconnect', 'reload', 'streaming']">
 							<MkPreferenceContainer k="serverDisconnectedBehavior">
-								<MkSelect v-model="serverDisconnectedBehavior">
+								<MkSelect
+									v-model="serverDisconnectedBehavior"
+									:items="[
+										{ label: i18n.ts._serverDisconnectedBehavior.reload, value: 'reload' },
+										{ label: i18n.ts._serverDisconnectedBehavior.dialog, value: 'dialog' },
+										{ label: i18n.ts._serverDisconnectedBehavior.quiet, value: 'quiet' },
+									]"
+								>
 									<template #label><SearchLabel>{{ i18n.ts.whenServerDisconnected }}</SearchLabel></template>
-									<option value="reload">{{ i18n.ts._serverDisconnectedBehavior.reload }}</option>
-									<option value="dialog">{{ i18n.ts._serverDisconnectedBehavior.dialog }}</option>
-									<option value="quiet">{{ i18n.ts._serverDisconnectedBehavior.quiet }}</option>
 								</MkSelect>
 							</MkPreferenceContainer>
 						</SearchMarker>
@@ -984,16 +1008,15 @@ function removeEmojiIndex(lang: string) {
 
 async function setPinnedList() {
 	const lists = await misskeyApi('users/lists/list');
-	const { canceled, result: list } = await os.select({
+	const { canceled, result: listId } = await os.select({
 		title: i18n.ts.selectList,
 		items: lists.map(x => ({
-			value: x, text: x.name,
+			value: x.id, label: x.name,
 		})),
 	});
-	if (canceled) return;
-	if (list == null) return;
+	if (canceled || listId == null) return;
 
-	prefer.commit('pinnedUserLists', [list]);
+	prefer.commit('pinnedUserLists', [lists.find((x) => x.id === listId)!]);
 }
 
 function removePinnedList() {
diff --git a/packages/frontend/src/pages/settings/privacy.vue b/packages/frontend/src/pages/settings/privacy.vue
index 8ae8c79ebd..d3020f068b 100644
--- a/packages/frontend/src/pages/settings/privacy.vue
+++ b/packages/frontend/src/pages/settings/privacy.vue
@@ -33,20 +33,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</SearchMarker>
 
 		<SearchMarker :keywords="['following', 'visibility']">
-			<MkSelect v-model="followingVisibility" @update:modelValue="save()">
+			<MkSelect v-model="followingVisibility" :items="followingVisibilityDef" @update:modelValue="save()">
 				<template #label><SearchLabel>{{ i18n.ts.followingVisibility }}</SearchLabel></template>
-				<option value="public">{{ i18n.ts._ffVisibility.public }}</option>
-				<option value="followers">{{ i18n.ts._ffVisibility.followers }}</option>
-				<option value="private">{{ i18n.ts._ffVisibility.private }}</option>
 			</MkSelect>
 		</SearchMarker>
 
 		<SearchMarker :keywords="['follower', 'visibility']">
-			<MkSelect v-model="followersVisibility" @update:modelValue="save()">
+			<MkSelect v-model="followersVisibility" :items="followersVisibilityDef" @update:modelValue="save()">
 				<template #label><SearchLabel>{{ i18n.ts.followersVisibility }}</SearchLabel></template>
-				<option value="public">{{ i18n.ts._ffVisibility.public }}</option>
-				<option value="followers">{{ i18n.ts._ffVisibility.followers }}</option>
-				<option value="private">{{ i18n.ts._ffVisibility.private }}</option>
 			</MkSelect>
 		</SearchMarker>
 
@@ -85,13 +79,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<div class="_gaps_m">
 					<MkInfo v-if="$i.policies.chatAvailability === 'unavailable'">{{ i18n.ts._chat.chatNotAvailableForThisAccountOrServer }}</MkInfo>
 					<SearchMarker :keywords="['chat']">
-						<MkSelect v-model="chatScope" @update:modelValue="save()">
+						<MkSelect v-model="chatScope" :items="chatScopeDef" @update:modelValue="save()">
 							<template #label><SearchLabel>{{ i18n.ts._chat.chatAllowedUsers }}</SearchLabel></template>
-							<option value="everyone">{{ i18n.ts._chat._chatAllowedUsers.everyone }}</option>
-							<option value="followers">{{ i18n.ts._chat._chatAllowedUsers.followers }}</option>
-							<option value="following">{{ i18n.ts._chat._chatAllowedUsers.following }}</option>
-							<option value="mutual">{{ i18n.ts._chat._chatAllowedUsers.mutual }}</option>
-							<option value="none">{{ i18n.ts._chat._chatAllowedUsers.none }}</option>
 							<template #caption>{{ i18n.ts._chat.chatAllowedUsers_note }}</template>
 						</MkSelect>
 					</SearchMarker>
@@ -119,15 +108,24 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<template #label><SearchLabel>{{ i18n.ts._accountSettings.makeNotesFollowersOnlyBefore }}</SearchLabel></template>
 
 							<div class="_gaps_s">
-								<MkSelect v-model="makeNotesFollowersOnlyBefore_type">
-									<option :value="null">{{ i18n.ts.none }}</option>
-									<option value="relative">{{ i18n.ts._accountSettings.notesHavePassedSpecifiedPeriod }}</option>
-									<option value="absolute">{{ i18n.ts._accountSettings.notesOlderThanSpecifiedDateAndTime }}</option>
+								<MkSelect
+									v-model="makeNotesFollowersOnlyBefore_type"
+									:items="[
+										{ label: i18n.ts.none, value: null },
+										{ label: i18n.ts._accountSettings.notesHavePassedSpecifiedPeriod, value: 'relative' },
+										{ label: i18n.ts._accountSettings.notesOlderThanSpecifiedDateAndTime, value: 'absolute' },
+									]"
+								>
 								</MkSelect>
 
-								<MkSelect v-if="makeNotesFollowersOnlyBefore_type === 'relative'" v-model="makeNotesFollowersOnlyBefore_selection">
-									<option v-for="preset in makeNotesFollowersOnlyBefore_presets" :value="preset.value">{{ preset.label }}</option>
-									<option value="custom">{{ i18n.ts.custom }}</option>
+								<MkSelect
+									v-if="makeNotesFollowersOnlyBefore_type === 'relative'"
+									v-model="makeNotesFollowersOnlyBefore_selection"
+									:items="[
+										...makeNotesFollowersOnlyBefore_presets,
+										{ label: i18n.ts.custom, value: 'custom' },
+									]"
+								>
 								</MkSelect>
 
 								<MkInput
@@ -162,22 +160,22 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<div class="_gaps_s">
 								<MkSelect
 									v-model="makeNotesHiddenBefore_type"
-									:items="[{
-										value: null,
-										label: i18n.ts.none
-									}, {
-										value: 'relative',
-										label: i18n.ts._accountSettings.notesHavePassedSpecifiedPeriod
-									}, {
-										value: 'absolute',
-										label: i18n.ts._accountSettings.notesOlderThanSpecifiedDateAndTime
-									}]"
+									:items="[
+										{ label: i18n.ts.none, value: null },
+										{ label: i18n.ts._accountSettings.notesHavePassedSpecifiedPeriod, value: 'relative' },
+										{ label: i18n.ts._accountSettings.notesOlderThanSpecifiedDateAndTime, value: 'absolute' },
+									]"
 								>
 								</MkSelect>
 
-								<MkSelect v-if="makeNotesHiddenBefore_type === 'relative'" v-model="makeNotesHiddenBefore_selection">
-									<option v-for="preset in makeNotesHiddenBefore_presets" :value="preset.value">{{ preset.label }}</option>
-									<option value="custom">{{ i18n.ts.custom }}</option>
+								<MkSelect
+									v-if="makeNotesHiddenBefore_type === 'relative'"
+									v-model="makeNotesHiddenBefore_selection"
+									:items="[
+										...makeNotesHiddenBefore_presets,
+										{ label: i18n.ts.custom, value: 'custom' },
+									]"
+								>
 								</MkSelect>
 
 								<MkInput
@@ -217,6 +215,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { ref, computed, watch } from 'vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import MkSelect from '@/components/MkSelect.vue';
+import type { MkSelectItem } from '@/components/MkSelect.vue';
 import FormSection from '@/components/form/section.vue';
 import { misskeyApi } from '@/utility/misskey-api.js';
 import { i18n } from '@/i18n.js';
@@ -225,6 +224,7 @@ import { ensureSignin } from '@/i.js';
 import { definePage } from '@/page.js';
 import FormSlot from '@/components/form/slot.vue';
 import { formatDateTimeString } from '@/utility/format-time-string.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import MkInput from '@/components/MkInput.vue';
 import * as os from '@/os.js';
 import MkDisableSection from '@/components/MkDisableSection.vue';
@@ -243,9 +243,41 @@ const makeNotesFollowersOnlyBefore = ref($i.makeNotesFollowersOnlyBefore ?? null
 const makeNotesHiddenBefore = ref($i.makeNotesHiddenBefore ?? null);
 const hideOnlineStatus = ref($i.hideOnlineStatus);
 const publicReactions = ref($i.publicReactions);
-const followingVisibility = ref($i.followingVisibility);
-const followersVisibility = ref($i.followersVisibility);
-const chatScope = ref($i.chatScope);
+const {
+	model: followingVisibility,
+	def: followingVisibilityDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.public, value: 'public' },
+		{ label: i18n.ts.followers, value: 'followers' },
+		{ label: i18n.ts.private, value: 'private' },
+	],
+	initialValue: $i.followingVisibility,
+});
+const {
+	model: followersVisibility,
+	def: followersVisibilityDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts.public, value: 'public' },
+		{ label: i18n.ts.followers, value: 'followers' },
+		{ label: i18n.ts.private, value: 'private' },
+	],
+	initialValue: $i.followersVisibility,
+});
+const {
+	model: chatScope,
+	def: chatScopeDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts._chat._chatAllowedUsers.everyone, value: 'everyone' },
+		{ label: i18n.ts._chat._chatAllowedUsers.followers, value: 'followers' },
+		{ label: i18n.ts._chat._chatAllowedUsers.following, value: 'following' },
+		{ label: i18n.ts._chat._chatAllowedUsers.mutual, value: 'mutual' },
+		{ label: i18n.ts._chat._chatAllowedUsers.none, value: 'none' },
+	],
+	initialValue: $i.chatScope,
+});
 
 const makeNotesFollowersOnlyBefore_type = computed({
 	get: () => {
@@ -276,7 +308,7 @@ const makeNotesFollowersOnlyBefore_presets = [
 	{ label: i18n.ts.oneMonth, value: -2592000 },
 	{ label: i18n.ts.threeMonths, value: -7776000 },
 	{ label: i18n.ts.oneYear, value: -31104000 },
-];
+] satisfies MkSelectItem[];
 
 const makeNotesFollowersOnlyBefore_isCustomMode = ref(
 	makeNotesFollowersOnlyBefore.value != null &&
@@ -328,7 +360,7 @@ const makeNotesHiddenBefore_presets = [
 	{ label: i18n.ts.oneMonth, value: -2592000 },
 	{ label: i18n.ts.threeMonths, value: -7776000 },
 	{ label: i18n.ts.oneYear, value: -31104000 },
-];
+] satisfies MkSelectItem[];
 
 const makeNotesHiddenBefore_isCustomMode = ref(
 	makeNotesHiddenBefore.value != null &&
diff --git a/packages/frontend/src/pages/settings/profile.vue b/packages/frontend/src/pages/settings/profile.vue
index 4816a6e33b..17e8505474 100644
--- a/packages/frontend/src/pages/settings/profile.vue
+++ b/packages/frontend/src/pages/settings/profile.vue
@@ -53,9 +53,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</SearchMarker>
 
 		<SearchMarker :keywords="['language', 'locale']">
-			<MkSelect v-model="profile.lang">
+			<MkSelect v-model="profile.lang" :items="Object.entries(langmap).map(([code, def]) => ({ label: def.nativeName, value: code }))">
 				<template #label><SearchLabel>{{ i18n.ts.language }}</SearchLabel></template>
-				<option v-for="x in Object.keys(langmap)" :key="x" :value="x">{{ langmap[x].nativeName }}</option>
 			</MkSelect>
 		</SearchMarker>
 
@@ -117,13 +116,17 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</SearchMarker>
 
 		<SearchMarker :keywords="['reaction']">
-			<MkSelect v-model="reactionAcceptance">
+			<MkSelect
+				v-model="reactionAcceptance"
+				:items="[
+					{ label: i18n.ts.all, value: null },
+					{ label: i18n.ts.likeOnlyForRemote, value: 'likeOnlyForRemote' },
+					{ label: i18n.ts.nonSensitiveOnly, value: 'nonSensitiveOnly' },
+					{ label: i18n.ts.nonSensitiveOnlyForLocalLikeOnlyForRemote, value: 'nonSensitiveOnlyForLocalLikeOnlyForRemote' },
+					{ label: i18n.ts.likeOnly, value: 'likeOnly' },
+				]"
+			>
 				<template #label><SearchLabel>{{ i18n.ts.reactionAcceptance }}</SearchLabel></template>
-				<option :value="null">{{ i18n.ts.all }}</option>
-				<option value="likeOnlyForRemote">{{ i18n.ts.likeOnlyForRemote }}</option>
-				<option value="nonSensitiveOnly">{{ i18n.ts.nonSensitiveOnly }}</option>
-				<option value="nonSensitiveOnlyForLocalLikeOnlyForRemote">{{ i18n.ts.nonSensitiveOnlyForLocalLikeOnlyForRemote }}</option>
-				<option value="likeOnly">{{ i18n.ts.likeOnly }}</option>
 			</MkSelect>
 		</SearchMarker>
 
diff --git a/packages/frontend/src/pages/settings/sounds.sound.vue b/packages/frontend/src/pages/settings/sounds.sound.vue
index 9e9671487e..31fe9a64db 100644
--- a/packages/frontend/src/pages/settings/sounds.sound.vue
+++ b/packages/frontend/src/pages/settings/sounds.sound.vue
@@ -5,9 +5,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <div class="_gaps_m">
-	<MkSelect v-model="type">
+	<MkSelect v-model="type" :items="typeDef">
 		<template #label>{{ i18n.ts.sound }}</template>
-		<option v-for="x in soundsTypes" :key="x ?? 'null'" :value="x">{{ getSoundTypeName(x) }}</option>
 	</MkSelect>
 	<div v-if="type === '_driveFile_' && driveFileError === true" :class="$style.fileSelectorRoot">
 		<MkButton :class="$style.fileSelectorButton" inline rounded primary @click="selectSound">{{ i18n.ts.selectFile }}</MkButton>
@@ -38,6 +37,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkRange from '@/components/MkRange.vue';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 import { misskeyApi } from '@/utility/misskey-api.js';
 import { playMisskeySfxFile, soundsTypes, getSoundDuration } from '@/utility/sound.js';
 import { selectFile } from '@/utility/drive.js';
@@ -51,7 +51,16 @@ const emit = defineEmits<{
 	(ev: 'update', result: { type: SoundType; fileId?: string; fileUrl?: string; volume: number; }): void;
 }>();
 
-const type = ref<SoundType>(props.def.type);
+const {
+	model: type,
+	def: typeDef,
+} = useMkSelect({
+	items: soundsTypes.map((x) => ({
+		label: getSoundTypeName(x),
+		value: x,
+	})),
+	initialValue: props.def.type,
+});
 const fileId = ref('fileId' in props.def ? props.def.fileId : undefined);
 const fileUrl = ref('fileUrl' in props.def ? props.def.fileUrl : undefined);
 const fileName = ref<string>('');
diff --git a/packages/frontend/src/pages/settings/statusbar.statusbar.vue b/packages/frontend/src/pages/settings/statusbar.statusbar.vue
index 561d31148f..b69fd2596d 100644
--- a/packages/frontend/src/pages/settings/statusbar.statusbar.vue
+++ b/packages/frontend/src/pages/settings/statusbar.statusbar.vue
@@ -5,11 +5,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <div class="_gaps_m">
-	<MkSelect v-model="statusbar.type" placeholder="Please select">
+	<MkSelect v-model="statusbar.type" :items="statusbarTypeDef">
 		<template #label>{{ i18n.ts.type }}</template>
-		<option value="rss">RSS</option>
-		<option v-if="instance.federation !== 'none'" value="federation">Federation</option>
-		<option value="userList">User list timeline</option>
 	</MkSelect>
 
 	<MkInput v-model="statusbar.name" manualSave>
@@ -63,9 +60,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</MkSwitch>
 	</template>
 	<template v-else-if="statusbar.type === 'userList' && userLists != null">
-		<MkSelect v-model="statusbar.props.userListId">
+		<MkSelect v-model="statusbar.props.userListId" :items="userListsDef">
 			<template #label>{{ i18n.ts.userList }}</template>
-			<option v-for="list in userLists" :value="list.id">{{ list.name }}</option>
 		</MkSelect>
 		<MkInput v-model="statusbar.props.refreshIntervalSec" manualSave type="number">
 			<template #label>{{ i18n.ts.refreshInterval }}</template>
@@ -86,7 +82,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
-import { reactive, watch } from 'vue';
+import { reactive, computed, watch } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkSelect from '@/components/MkSelect.vue';
 import MkInput from '@/components/MkInput.vue';
@@ -98,13 +94,32 @@ import { i18n } from '@/i18n.js';
 import { instance } from '@/instance.js';
 import { deepClone } from '@/utility/clone.js';
 import { prefer } from '@/preferences.js';
+import type { MkSelectItem } from '@/components/MkSelect.vue';
+import type { StatusbarStore } from '@/preferences/def.js';
 
 const props = defineProps<{
 	_id: string;
 	userLists: Misskey.entities.UserList[] | null;
 }>();
 
-const statusbar = reactive(deepClone(prefer.s.statusbars.find(x => x.id === props._id))!);
+const statusbar = reactive<StatusbarStore>(deepClone(prefer.s.statusbars.find(x => x.id === props._id)!));
+
+const statusbarTypeDef = computed(() => {
+	const items = [
+		{ label: 'RSS', value: 'rss' },
+	] satisfies MkSelectItem[];
+	if (instance.federation !== 'none') {
+		items.push({ label: 'Federation', value: 'federation' });
+	}
+	if (props.userLists != null) {
+		items.push({ label: i18n.ts.userList, value: 'userList' });
+	}
+	return items;
+});
+
+const userListsDef = computed(() => {
+	return (props.userLists ?? []).map(x => ({ label: x.name, value: x.id })) satisfies MkSelectItem[];
+});
 
 watch(() => statusbar.type, () => {
 	if (statusbar.type === 'rss') {
diff --git a/packages/frontend/src/pages/settings/theme.manage.vue b/packages/frontend/src/pages/settings/theme.manage.vue
index e972184278..7bb877ec39 100644
--- a/packages/frontend/src/pages/settings/theme.manage.vue
+++ b/packages/frontend/src/pages/settings/theme.manage.vue
@@ -5,16 +5,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <div class="_gaps_m">
-	<MkSelect v-model="selectedThemeId">
+	<MkSelect v-model="selectedThemeId" :items="selectedThemeIdDef">
 		<template #label>{{ i18n.ts.theme }}</template>
-		<optgroup :label="i18n.ts._theme.installedThemes">
-			<option v-for="x in installedThemes" :key="x.id" :value="x.id">{{ x.name }}</option>
-		</optgroup>
-		<optgroup :label="i18n.ts._theme.builtinThemes">
-			<option v-for="x in builtinThemes" :key="x.id" :value="x.id">{{ x.name }}</option>
-		</optgroup>
 	</MkSelect>
-	<template v-if="selectedTheme">
+	<template v-if="selectedTheme != null">
 		<MkInput readonly :modelValue="selectedTheme.author">
 			<template #label>{{ i18n.ts.author }}</template>
 		</MkInput>
@@ -43,10 +37,26 @@ import { copyToClipboard } from '@/utility/copy-to-clipboard.js';
 import * as os from '@/os.js';
 import { i18n } from '@/i18n.js';
 import { definePage } from '@/page.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
+import type { MkSelectItem } from '@/components/MkSelect.vue';
 
 const installedThemes = getThemesRef();
 const builtinThemes = getBuiltinThemesRef();
-const selectedThemeId = ref<string | null>(null);
+const {
+	model: selectedThemeId,
+	def: selectedThemeIdDef,
+} = useMkSelect({
+	items: computed<MkSelectItem<string | null>[]>(() => [{
+		type: 'group',
+		label: i18n.ts._theme.installedThemes,
+		items: installedThemes.value.map(x => ({ label: x.name, value: x.id })),
+	}, {
+		type: 'group',
+		label: i18n.ts._theme.builtinThemes,
+		items: builtinThemes.value.map(x => ({ label: x.name, value: x.id })),
+	}]),
+	initialValue: null,
+});
 
 const themes = computed(() => [...installedThemes.value, ...builtinThemes.value]);