diff --git a/packages/client/src/components/notification-setting-window.vue b/packages/client/src/components/notification-setting-window.vue
index 64d828394b..84550c9da1 100644
--- a/packages/client/src/components/notification-setting-window.vue
+++ b/packages/client/src/components/notification-setting-window.vue
@@ -6,95 +6,81 @@
 	:with-ok-button="true"
 	:ok-button-disabled="false"
 	@ok="ok()"
-	@close="$refs.dialog.close()"
-	@closed="$emit('closed')"
+	@close="dialog.close()"
+	@closed="emit('closed')"
 >
-	<template #header>{{ $ts.notificationSetting }}</template>
+	<template #header>{{ i18n.ts.notificationSetting }}</template>
 	<div class="_monolithic_">
 		<div v-if="showGlobalToggle" class="_section">
 			<MkSwitch v-model="useGlobalSetting">
-				{{ $ts.useGlobalSetting }}
-				<template #caption>{{ $ts.useGlobalSettingDesc }}</template>
+				{{ i18n.ts.useGlobalSetting }}
+				<template #caption>{{ i18n.ts.useGlobalSettingDesc }}</template>
 			</MkSwitch>
 		</div>
 		<div v-if="!useGlobalSetting" class="_section">
-			<MkInfo>{{ $ts.notificationSettingDesc }}</MkInfo>
-			<MkButton inline @click="disableAll">{{ $ts.disableAll }}</MkButton>
-			<MkButton inline @click="enableAll">{{ $ts.enableAll }}</MkButton>
-			<MkSwitch v-for="type in notificationTypes" :key="type" v-model="typesMap[type]">{{ $t(`_notification._types.${type}`) }}</MkSwitch>
+			<MkInfo>{{ i18n.ts.notificationSettingDesc }}</MkInfo>
+			<MkButton inline @click="disableAll">{{ i18n.ts.disableAll }}</MkButton>
+			<MkButton inline @click="enableAll">{{ i18n.ts.enableAll }}</MkButton>
+			<MkSwitch v-for="type in notificationTypes" :key="type" v-model="typesMap[type]">{{ i18n.t(`_notification._types.${type}`) }}</MkSwitch>
 		</div>
 	</div>
 </XModalWindow>
 </template>
 
-<script lang="ts">
-import { defineComponent, PropType } from 'vue';
+<script lang="ts" setup>
+import { PropType } from 'vue';
 import { notificationTypes } from 'misskey-js';
 import MkSwitch from './form/switch.vue';
 import MkInfo from './ui/info.vue';
 import MkButton from './ui/button.vue';
 import XModalWindow from '@/components/ui/modal-window.vue';
+import { i18n } from '@/i18n';
 
-export default defineComponent({
-	components: {
-		XModalWindow,
-		MkSwitch,
-		MkInfo,
-		MkButton,
-	},
+const emit = defineEmits<{
+	(ev: 'done', v: { includingTypes: string[] | null }): void,
+	(ev: 'closed'): void,
+}>();
 
-	props: {
-		includingTypes: {
-			// TODO: これで型に合わないものを弾いてくれるのかどうか要調査
-			type: Array as PropType<typeof notificationTypes[number][]>,
-			required: false,
-			default: null,
-		},
-		showGlobalToggle: {
-			type: Boolean,
-			required: false,
-			default: true,
-		},
-	},
-
-	emits: ['done', 'closed'],
-
-	data() {
-		return {
-			typesMap: {} as Record<typeof notificationTypes[number], boolean>,
-			useGlobalSetting: false,
-			notificationTypes,
-		};
-	},
-
-	created() {
-		this.useGlobalSetting = this.includingTypes === null && this.showGlobalToggle;
-
-		for (const type of this.notificationTypes) {
-			this.typesMap[type] = this.includingTypes === null || this.includingTypes.includes(type);
-		}
-	},
-
-	methods: {
-		ok() {
-			const includingTypes = this.useGlobalSetting ? null : (Object.keys(this.typesMap) as typeof notificationTypes[number][])
-				.filter(type => this.typesMap[type]);
-
-			this.$emit('done', { includingTypes });
-			this.$refs.dialog.close();
-		},
-
-		disableAll() {
-			for (const type in this.typesMap) {
-				this.typesMap[type as typeof notificationTypes[number]] = false;
-			}
-		},
-
-		enableAll() {
-			for (const type in this.typesMap) {
-				this.typesMap[type as typeof notificationTypes[number]] = true;
-			}
-		},
-	},
+const props = withDefaults(defineProps<{
+	// TODO: これで型に合わないものを弾いてくれるのかどうか要調査
+	includingTypes?: typeof notificationTypes[number][];
+	showGlobalToggle?: boolean;
+}>(), {
+	includingTypes: () => [],
+	showGlobalToggle: true,
 });
+
+const dialog = $ref<InstanceType<typeof XModalWindow>>();
+
+let typesMap = $ref<Record<typeof notificationTypes[number], boolean>>({});
+let useGlobalSetting = $ref(props.includingTypes === [] && props.showGlobalToggle);
+
+for (const type of notificationTypes) {
+	typesMap[type] = props.includingTypes.includes(type);
+}
+
+function ok() {
+	if (useGlobalSetting) {
+		emit('done', { includingTypes: null });
+	} else {
+		emit('done', {
+			includingTypes: (Object.keys(typesMap) as typeof notificationTypes[number][])
+				.filter(type => typesMap[type]),
+		});
+	}
+
+	dialog.close();
+}
+
+function disableAll() {
+	for (const type in typesMap) {
+		typesMap[type as typeof notificationTypes[number]] = false;
+	}
+}
+
+function enableAll() {
+	for (const type in typesMap) {
+		typesMap[type as typeof notificationTypes[number]] = true;
+	}
+}
 </script>