diff --git a/packages/frontend/src/boot/common.ts b/packages/frontend/src/boot/common.ts
index d09c6d39d2..e84b6672ae 100644
--- a/packages/frontend/src/boot/common.ts
+++ b/packages/frontend/src/boot/common.ts
@@ -180,12 +180,12 @@ export async function common(createVue: () => App<Element>) {
 
 	//#region Sync dark mode
 	if (prefer.s.syncDeviceDarkMode) {
-		store.set('darkMode', isDeviceDarkmode());
+		store.commit('darkMode', isDeviceDarkmode());
 	}
 
 	window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', (mql) => {
 		if (prefer.s.syncDeviceDarkMode) {
-			store.set('darkMode', mql.matches);
+			store.commit('darkMode', mql.matches);
 		}
 	});
 	//#endregion
@@ -198,8 +198,8 @@ export async function common(createVue: () => App<Element>) {
 
 	fetchInstanceMetaPromise.then(() => {
 		// TODO: instance.defaultLightTheme/instance.defaultDarkThemeが不正な形式だった場合のケア
-		if (prefer.s.lightTheme == null && instance.defaultLightTheme != null) prefer.set('lightTheme', JSON.parse(instance.defaultLightTheme));
-		if (prefer.s.darkTheme == null && instance.defaultDarkTheme != null) prefer.set('darkTheme', JSON.parse(instance.defaultDarkTheme));
+		if (prefer.s.lightTheme == null && instance.defaultLightTheme != null) prefer.commit('lightTheme', JSON.parse(instance.defaultLightTheme));
+		if (prefer.s.darkTheme == null && instance.defaultDarkTheme != null) prefer.commit('darkTheme', JSON.parse(instance.defaultDarkTheme));
 	});
 
 	watch(prefer.r.overridedDeviceKind, (kind) => {
diff --git a/packages/frontend/src/boot/main-boot.ts b/packages/frontend/src/boot/main-boot.ts
index 411cf3f672..e36ba30c80 100644
--- a/packages/frontend/src/boot/main-boot.ts
+++ b/packages/frontend/src/boot/main-boot.ts
@@ -141,92 +141,92 @@ export async function mainBoot() {
 			if (store.s.menu.length > 0) {
 				const themes = await misskeyApi('i/registry/get', { scope: ['client'], key: 'themes' }).catch(() => []);
 				if (themes.length > 0) {
-					prefer.set('themes', themes);
+					prefer.commit('themes', themes);
 				}
 				const plugins = ColdDeviceStorage.get('plugins');
-				prefer.set('plugins', plugins.map(p => ({
+				prefer.commit('plugins', plugins.map(p => ({
 					...p,
 					installId: (p as any).id,
 					id: undefined,
 				})));
-				prefer.set('lightTheme', ColdDeviceStorage.get('lightTheme'));
-				prefer.set('darkTheme', ColdDeviceStorage.get('darkTheme'));
-				prefer.set('syncDeviceDarkMode', ColdDeviceStorage.get('syncDeviceDarkMode'));
-				prefer.set('overridedDeviceKind', store.s.overridedDeviceKind);
-				prefer.set('widgets', store.s.widgets);
-				prefer.set('keepCw', store.s.keepCw);
-				prefer.set('collapseRenotes', store.s.collapseRenotes);
-				prefer.set('rememberNoteVisibility', store.s.rememberNoteVisibility);
-				prefer.set('uploadFolder', store.s.uploadFolder);
-				prefer.set('keepOriginalUploading', store.s.keepOriginalUploading);
-				prefer.set('menu', store.s.menu);
-				prefer.set('statusbars', store.s.statusbars);
-				prefer.set('pinnedUserLists', store.s.pinnedUserLists);
-				prefer.set('serverDisconnectedBehavior', store.s.serverDisconnectedBehavior);
-				prefer.set('nsfw', store.s.nsfw);
-				prefer.set('highlightSensitiveMedia', store.s.highlightSensitiveMedia);
-				prefer.set('animation', store.s.animation);
-				prefer.set('animatedMfm', store.s.animatedMfm);
-				prefer.set('advancedMfm', store.s.advancedMfm);
-				prefer.set('showReactionsCount', store.s.showReactionsCount);
-				prefer.set('enableQuickAddMfmFunction', store.s.enableQuickAddMfmFunction);
-				prefer.set('loadRawImages', store.s.loadRawImages);
-				prefer.set('imageNewTab', store.s.imageNewTab);
-				prefer.set('disableShowingAnimatedImages', store.s.disableShowingAnimatedImages);
-				prefer.set('emojiStyle', store.s.emojiStyle);
-				prefer.set('menuStyle', store.s.menuStyle);
-				prefer.set('useBlurEffectForModal', store.s.useBlurEffectForModal);
-				prefer.set('useBlurEffect', store.s.useBlurEffect);
-				prefer.set('showFixedPostForm', store.s.showFixedPostForm);
-				prefer.set('showFixedPostFormInChannel', store.s.showFixedPostFormInChannel);
-				prefer.set('enableInfiniteScroll', store.s.enableInfiniteScroll);
-				prefer.set('useReactionPickerForContextMenu', store.s.useReactionPickerForContextMenu);
-				prefer.set('showGapBetweenNotesInTimeline', store.s.showGapBetweenNotesInTimeline);
-				prefer.set('instanceTicker', store.s.instanceTicker);
-				prefer.set('emojiPickerScale', store.s.emojiPickerScale);
-				prefer.set('emojiPickerWidth', store.s.emojiPickerWidth);
-				prefer.set('emojiPickerHeight', store.s.emojiPickerHeight);
-				prefer.set('emojiPickerStyle', store.s.emojiPickerStyle);
-				prefer.set('reportError', store.s.reportError);
-				prefer.set('squareAvatars', store.s.squareAvatars);
-				prefer.set('showAvatarDecorations', store.s.showAvatarDecorations);
-				prefer.set('numberOfPageCache', store.s.numberOfPageCache);
-				prefer.set('showNoteActionsOnlyHover', store.s.showNoteActionsOnlyHover);
-				prefer.set('showClipButtonInNoteFooter', store.s.showClipButtonInNoteFooter);
-				prefer.set('reactionsDisplaySize', store.s.reactionsDisplaySize);
-				prefer.set('limitWidthOfReaction', store.s.limitWidthOfReaction);
-				prefer.set('forceShowAds', store.s.forceShowAds);
-				prefer.set('aiChanMode', store.s.aiChanMode);
-				prefer.set('devMode', store.s.devMode);
-				prefer.set('mediaListWithOneImageAppearance', store.s.mediaListWithOneImageAppearance);
-				prefer.set('notificationPosition', store.s.notificationPosition);
-				prefer.set('notificationStackAxis', store.s.notificationStackAxis);
-				prefer.set('enableCondensedLine', store.s.enableCondensedLine);
-				prefer.set('keepScreenOn', store.s.keepScreenOn);
-				prefer.set('disableStreamingTimeline', store.s.disableStreamingTimeline);
-				prefer.set('useGroupedNotifications', store.s.useGroupedNotifications);
-				prefer.set('dataSaver', store.s.dataSaver);
-				prefer.set('enableSeasonalScreenEffect', store.s.enableSeasonalScreenEffect);
-				prefer.set('enableHorizontalSwipe', store.s.enableHorizontalSwipe);
-				prefer.set('useNativeUiForVideoAudioPlayer', store.s.useNativeUIForVideoAudioPlayer);
-				prefer.set('keepOriginalFilename', store.s.keepOriginalFilename);
-				prefer.set('alwaysConfirmFollow', store.s.alwaysConfirmFollow);
-				prefer.set('confirmWhenRevealingSensitiveMedia', store.s.confirmWhenRevealingSensitiveMedia);
-				prefer.set('contextMenu', store.s.contextMenu);
-				prefer.set('skipNoteRender', store.s.skipNoteRender);
-				prefer.set('showSoftWordMutedWord', store.s.showSoftWordMutedWord);
-				prefer.set('confirmOnReact', store.s.confirmOnReact);
-				prefer.set('sound.masterVolume', store.s.sound_masterVolume);
-				prefer.set('sound.notUseSound', store.s.sound_notUseSound);
-				prefer.set('sound.useSoundOnlyWhenActive', store.s.sound_useSoundOnlyWhenActive);
-				prefer.set('sound.on.note', store.s.sound_note as any);
-				prefer.set('sound.on.noteMy', store.s.sound_noteMy as any);
-				prefer.set('sound.on.notification', store.s.sound_notification as any);
-				prefer.set('sound.on.reaction', store.s.sound_reaction as any);
-				store.set('deck.profile', deckStore.state.profile);
-				store.set('deck.columns', deckStore.state.columns);
-				store.set('deck.layout', deckStore.state.layout);
-				store.set('menu', []);
+				prefer.commit('lightTheme', ColdDeviceStorage.get('lightTheme'));
+				prefer.commit('darkTheme', ColdDeviceStorage.get('darkTheme'));
+				prefer.commit('syncDeviceDarkMode', ColdDeviceStorage.get('syncDeviceDarkMode'));
+				prefer.commit('overridedDeviceKind', store.s.overridedDeviceKind);
+				prefer.commit('widgets', store.s.widgets);
+				prefer.commit('keepCw', store.s.keepCw);
+				prefer.commit('collapseRenotes', store.s.collapseRenotes);
+				prefer.commit('rememberNoteVisibility', store.s.rememberNoteVisibility);
+				prefer.commit('uploadFolder', store.s.uploadFolder);
+				prefer.commit('keepOriginalUploading', store.s.keepOriginalUploading);
+				prefer.commit('menu', store.s.menu);
+				prefer.commit('statusbars', store.s.statusbars);
+				prefer.commit('pinnedUserLists', store.s.pinnedUserLists);
+				prefer.commit('serverDisconnectedBehavior', store.s.serverDisconnectedBehavior);
+				prefer.commit('nsfw', store.s.nsfw);
+				prefer.commit('highlightSensitiveMedia', store.s.highlightSensitiveMedia);
+				prefer.commit('animation', store.s.animation);
+				prefer.commit('animatedMfm', store.s.animatedMfm);
+				prefer.commit('advancedMfm', store.s.advancedMfm);
+				prefer.commit('showReactionsCount', store.s.showReactionsCount);
+				prefer.commit('enableQuickAddMfmFunction', store.s.enableQuickAddMfmFunction);
+				prefer.commit('loadRawImages', store.s.loadRawImages);
+				prefer.commit('imageNewTab', store.s.imageNewTab);
+				prefer.commit('disableShowingAnimatedImages', store.s.disableShowingAnimatedImages);
+				prefer.commit('emojiStyle', store.s.emojiStyle);
+				prefer.commit('menuStyle', store.s.menuStyle);
+				prefer.commit('useBlurEffectForModal', store.s.useBlurEffectForModal);
+				prefer.commit('useBlurEffect', store.s.useBlurEffect);
+				prefer.commit('showFixedPostForm', store.s.showFixedPostForm);
+				prefer.commit('showFixedPostFormInChannel', store.s.showFixedPostFormInChannel);
+				prefer.commit('enableInfiniteScroll', store.s.enableInfiniteScroll);
+				prefer.commit('useReactionPickerForContextMenu', store.s.useReactionPickerForContextMenu);
+				prefer.commit('showGapBetweenNotesInTimeline', store.s.showGapBetweenNotesInTimeline);
+				prefer.commit('instanceTicker', store.s.instanceTicker);
+				prefer.commit('emojiPickerScale', store.s.emojiPickerScale);
+				prefer.commit('emojiPickerWidth', store.s.emojiPickerWidth);
+				prefer.commit('emojiPickerHeight', store.s.emojiPickerHeight);
+				prefer.commit('emojiPickerStyle', store.s.emojiPickerStyle);
+				prefer.commit('reportError', store.s.reportError);
+				prefer.commit('squareAvatars', store.s.squareAvatars);
+				prefer.commit('showAvatarDecorations', store.s.showAvatarDecorations);
+				prefer.commit('numberOfPageCache', store.s.numberOfPageCache);
+				prefer.commit('showNoteActionsOnlyHover', store.s.showNoteActionsOnlyHover);
+				prefer.commit('showClipButtonInNoteFooter', store.s.showClipButtonInNoteFooter);
+				prefer.commit('reactionsDisplaySize', store.s.reactionsDisplaySize);
+				prefer.commit('limitWidthOfReaction', store.s.limitWidthOfReaction);
+				prefer.commit('forceShowAds', store.s.forceShowAds);
+				prefer.commit('aiChanMode', store.s.aiChanMode);
+				prefer.commit('devMode', store.s.devMode);
+				prefer.commit('mediaListWithOneImageAppearance', store.s.mediaListWithOneImageAppearance);
+				prefer.commit('notificationPosition', store.s.notificationPosition);
+				prefer.commit('notificationStackAxis', store.s.notificationStackAxis);
+				prefer.commit('enableCondensedLine', store.s.enableCondensedLine);
+				prefer.commit('keepScreenOn', store.s.keepScreenOn);
+				prefer.commit('disableStreamingTimeline', store.s.disableStreamingTimeline);
+				prefer.commit('useGroupedNotifications', store.s.useGroupedNotifications);
+				prefer.commit('dataSaver', store.s.dataSaver);
+				prefer.commit('enableSeasonalScreenEffect', store.s.enableSeasonalScreenEffect);
+				prefer.commit('enableHorizontalSwipe', store.s.enableHorizontalSwipe);
+				prefer.commit('useNativeUiForVideoAudioPlayer', store.s.useNativeUIForVideoAudioPlayer);
+				prefer.commit('keepOriginalFilename', store.s.keepOriginalFilename);
+				prefer.commit('alwaysConfirmFollow', store.s.alwaysConfirmFollow);
+				prefer.commit('confirmWhenRevealingSensitiveMedia', store.s.confirmWhenRevealingSensitiveMedia);
+				prefer.commit('contextMenu', store.s.contextMenu);
+				prefer.commit('skipNoteRender', store.s.skipNoteRender);
+				prefer.commit('showSoftWordMutedWord', store.s.showSoftWordMutedWord);
+				prefer.commit('confirmOnReact', store.s.confirmOnReact);
+				prefer.commit('sound.masterVolume', store.s.sound_masterVolume);
+				prefer.commit('sound.notUseSound', store.s.sound_notUseSound);
+				prefer.commit('sound.useSoundOnlyWhenActive', store.s.sound_useSoundOnlyWhenActive);
+				prefer.commit('sound.on.note', store.s.sound_note as any);
+				prefer.commit('sound.on.noteMy', store.s.sound_noteMy as any);
+				prefer.commit('sound.on.notification', store.s.sound_notification as any);
+				prefer.commit('sound.on.reaction', store.s.sound_reaction as any);
+				store.commit('deck.profile', deckStore.state.profile);
+				store.commit('deck.columns', deckStore.state.columns);
+				store.commit('deck.layout', deckStore.state.layout);
+				store.commit('menu', []);
 			}
 
 			if (store.s.accountSetupWizard !== -1) {
@@ -502,7 +502,7 @@ export async function mainBoot() {
 			post();
 		},
 		'd': () => {
-			store.set('darkMode', !store.s.darkMode);
+			store.commit('darkMode', !store.s.darkMode);
 		},
 		's': () => {
 			mainRouter.push('/search');
diff --git a/packages/frontend/src/components/MkAutocomplete.vue b/packages/frontend/src/components/MkAutocomplete.vue
index 7436d4f1b2..2c661ccff7 100644
--- a/packages/frontend/src/components/MkAutocomplete.vue
+++ b/packages/frontend/src/components/MkAutocomplete.vue
@@ -158,7 +158,7 @@ function complete(type: string, value: any) {
 		let recents = store.s.recentlyUsedEmojis;
 		recents = recents.filter((emoji: any) => emoji !== value);
 		recents.unshift(value);
-		store.set('recentlyUsedEmojis', recents.splice(0, 32));
+		store.commit('recentlyUsedEmojis', recents.splice(0, 32));
 	}
 }
 
diff --git a/packages/frontend/src/components/MkDrive.folder.vue b/packages/frontend/src/components/MkDrive.folder.vue
index 7b8d81f7f0..3bcd934f8a 100644
--- a/packages/frontend/src/components/MkDrive.folder.vue
+++ b/packages/frontend/src/components/MkDrive.folder.vue
@@ -245,7 +245,7 @@ function deleteFolder() {
 		folderId: props.folder.id,
 	}).then(() => {
 		if (prefer.s.uploadFolder === props.folder.id) {
-			prefer.set('uploadFolder', null);
+			prefer.commit('uploadFolder', null);
 		}
 	}).catch(err => {
 		switch (err.id) {
@@ -266,7 +266,7 @@ function deleteFolder() {
 }
 
 function setAsUploadFolder() {
-	prefer.set('uploadFolder', props.folder.id);
+	prefer.commit('uploadFolder', props.folder.id);
 }
 
 function onContextmenu(ev: MouseEvent) {
diff --git a/packages/frontend/src/components/MkEmojiPicker.vue b/packages/frontend/src/components/MkEmojiPicker.vue
index 384682277e..e9239780df 100644
--- a/packages/frontend/src/components/MkEmojiPicker.vue
+++ b/packages/frontend/src/components/MkEmojiPicker.vue
@@ -432,7 +432,7 @@ function chosen(emoji: string | Misskey.entities.EmojiSimple | UnicodeEmojiDef,
 		let recents = store.s.recentlyUsedEmojis;
 		recents = recents.filter((emoji) => emoji !== key);
 		recents.unshift(key);
-		store.set('recentlyUsedEmojis', recents.splice(0, 32));
+		store.commit('recentlyUsedEmojis', recents.splice(0, 32));
 	}
 }
 
diff --git a/packages/frontend/src/components/MkPostForm.vue b/packages/frontend/src/components/MkPostForm.vue
index aa2fe59578..6a94024a21 100644
--- a/packages/frontend/src/components/MkPostForm.vue
+++ b/packages/frontend/src/components/MkPostForm.vue
@@ -177,9 +177,9 @@ const files = ref(props.initialFiles ?? []);
 const poll = ref<PollEditorModelValue | null>(null);
 const useCw = ref<boolean>(!!props.initialCw);
 const showPreview = ref(store.s.showPreview);
-watch(showPreview, () => store.set('showPreview', showPreview.value));
+watch(showPreview, () => store.commit('showPreview', showPreview.value));
 const showAddMfmFunction = ref(prefer.s.enableQuickAddMfmFunction);
-watch(showAddMfmFunction, () => prefer.set('enableQuickAddMfmFunction', showAddMfmFunction.value));
+watch(showAddMfmFunction, () => prefer.commit('enableQuickAddMfmFunction', showAddMfmFunction.value));
 const cw = ref<string | null>(props.initialCw ?? null);
 const localOnly = ref(props.initialLocalOnly ?? (prefer.s.rememberNoteVisibility ? store.s.localOnly : prefer.s.defaultNoteLocalOnly));
 const visibility = ref(props.initialVisibility ?? (prefer.s.rememberNoteVisibility ? store.s.visibility : prefer.s.defaultNoteVisibility));
@@ -480,7 +480,7 @@ function setVisibility() {
 		changeVisibility: v => {
 			visibility.value = v;
 			if (prefer.s.rememberNoteVisibility) {
-				store.set('visibility', visibility.value);
+				store.commit('visibility', visibility.value);
 			}
 		},
 		closed: () => dispose(),
@@ -528,7 +528,7 @@ async function toggleLocalOnly() {
 
 	localOnly.value = !localOnly.value;
 	if (prefer.s.rememberNoteVisibility) {
-		store.set('localOnly', localOnly.value);
+		store.commit('localOnly', localOnly.value);
 	}
 }
 
diff --git a/packages/frontend/src/components/MkUserSelectDialog.vue b/packages/frontend/src/components/MkUserSelectDialog.vue
index e5c6df267b..2f0e529d24 100644
--- a/packages/frontend/src/components/MkUserSelectDialog.vue
+++ b/packages/frontend/src/components/MkUserSelectDialog.vue
@@ -131,7 +131,7 @@ async function ok() {
 	let recents = store.s.recentlyUsedUsers;
 	recents = recents.filter(x => x !== selected.value?.id);
 	recents.unshift(selected.value.id);
-	store.set('recentlyUsedUsers', recents.splice(0, 16));
+	store.commit('recentlyUsedUsers', recents.splice(0, 16));
 }
 
 function cancel() {
diff --git a/packages/frontend/src/components/MkUserSetupDialog.vue b/packages/frontend/src/components/MkUserSetupDialog.vue
index eb3a69217e..0eb9717ec4 100644
--- a/packages/frontend/src/components/MkUserSetupDialog.vue
+++ b/packages/frontend/src/components/MkUserSetupDialog.vue
@@ -152,7 +152,7 @@ const dialog = shallowRef<InstanceType<typeof MkModalWindow>>();
 const page = ref(store.s.accountSetupWizard);
 
 watch(page, () => {
-	store.set('accountSetupWizard', page.value);
+	store.commit('accountSetupWizard', page.value);
 });
 
 async function close(skip: boolean) {
@@ -165,11 +165,11 @@ async function close(skip: boolean) {
 	}
 
 	dialog.value?.close();
-	store.set('accountSetupWizard', -1);
+	store.commit('accountSetupWizard', -1);
 }
 
 function setupComplete() {
-	store.set('accountSetupWizard', -1);
+	store.commit('accountSetupWizard', -1);
 	dialog.value?.close();
 }
 
@@ -194,7 +194,7 @@ async function later(later: boolean) {
 	}
 
 	dialog.value?.close();
-	store.set('accountSetupWizard', 0);
+	store.commit('accountSetupWizard', 0);
 }
 </script>
 
diff --git a/packages/frontend/src/deck.ts b/packages/frontend/src/deck.ts
index f158db2f85..38eed71c2e 100644
--- a/packages/frontend/src/deck.ts
+++ b/packages/frontend/src/deck.ts
@@ -69,15 +69,15 @@ export const loadDeck = async () => {
 				return;
 			}
 
-			store.set('deck.columns', []);
-			store.set('deck.layout', []);
+			store.commit('deck.columns', []);
+			store.commit('deck.layout', []);
 			return;
 		}
 		throw err;
 	}
 
-	store.set('deck.columns', deck.columns);
-	store.set('deck.layout', deck.layout);
+	store.commit('deck.columns', deck.columns);
+	store.commit('deck.layout', deck.layout);
 };
 
 export async function forceSaveDeck() {
@@ -117,8 +117,8 @@ export function addColumn(column: Column) {
 }
 
 export function removeColumn(id: Column['id']) {
-	store.set('deck.columns', store.s['deck.columns'].filter(c => c.id !== id));
-	store.set('deck.layout', store.s['deck.layout']
+	store.commit('deck.columns', store.s['deck.columns'].filter(c => c.id !== id));
+	store.commit('deck.layout', store.s['deck.layout']
 		.map(ids => ids.filter(_id => _id !== id))
 		.filter(ids => ids.length > 0));
 	saveDeck();
@@ -132,7 +132,7 @@ export function swapColumn(a: Column['id'], b: Column['id']) {
 	const layout = deepClone(store.s['deck.layout']);
 	layout[aX][aY] = b;
 	layout[bX][bY] = a;
-	store.set('deck.layout', layout);
+	store.commit('deck.layout', layout);
 	saveDeck();
 }
 
@@ -144,7 +144,7 @@ export function swapLeftColumn(id: Column['id']) {
 			if (left) {
 				layout[i - 1] = store.s['deck.layout'][i];
 				layout[i] = left;
-				store.set('deck.layout', layout);
+				store.commit('deck.layout', layout);
 			}
 			return true;
 		}
@@ -161,7 +161,7 @@ export function swapRightColumn(id: Column['id']) {
 			if (right) {
 				layout[i + 1] = store.s['deck.layout'][i];
 				layout[i] = right;
-				store.set('deck.layout', layout);
+				store.commit('deck.layout', layout);
 			}
 			return true;
 		}
@@ -182,7 +182,7 @@ export function swapUpColumn(id: Column['id']) {
 				ids[i] = up;
 
 				layout[idsIndex] = ids;
-				store.set('deck.layout', layout);
+				store.commit('deck.layout', layout);
 			}
 			return true;
 		}
@@ -203,7 +203,7 @@ export function swapDownColumn(id: Column['id']) {
 				ids[i] = down;
 
 				layout[idsIndex] = ids;
-				store.set('deck.layout', layout);
+				store.commit('deck.layout', layout);
 			}
 			return true;
 		}
@@ -218,7 +218,7 @@ export function stackLeftColumn(id: Column['id']) {
 	layout = layout.map(ids => ids.filter(_id => _id !== id));
 	layout[i - 1].push(id);
 	layout = layout.filter(ids => ids.length > 0);
-	store.set('deck.layout', layout);
+	store.commit('deck.layout', layout);
 	saveDeck();
 }
 
@@ -229,7 +229,7 @@ export function popRightColumn(id: Column['id']) {
 	layout = layout.map(ids => ids.filter(_id => _id !== id));
 	layout.splice(i + 1, 0, [id]);
 	layout = layout.filter(ids => ids.length > 0);
-	store.set('deck.layout', layout);
+	store.commit('deck.layout', layout);
 
 	const columns = deepClone(store.s['deck.columns']);
 	for (const column of columns) {
@@ -237,7 +237,7 @@ export function popRightColumn(id: Column['id']) {
 			column.active = true;
 		}
 	}
-	store.set('deck.columns', columns);
+	store.commit('deck.columns', columns);
 
 	saveDeck();
 }
@@ -250,7 +250,7 @@ export function addColumnWidget(id: Column['id'], widget: ColumnWidget) {
 	if (column.widgets == null) column.widgets = [];
 	column.widgets.unshift(widget);
 	columns[columnIndex] = column;
-	store.set('deck.columns', columns);
+	store.commit('deck.columns', columns);
 	saveDeck();
 }
 
@@ -262,7 +262,7 @@ export function removeColumnWidget(id: Column['id'], widget: ColumnWidget) {
 	if (column.widgets == null) column.widgets = [];
 	column.widgets = column.widgets.filter(w => w.id !== widget.id);
 	columns[columnIndex] = column;
-	store.set('deck.columns', columns);
+	store.commit('deck.columns', columns);
 	saveDeck();
 }
 
@@ -273,7 +273,7 @@ export function setColumnWidgets(id: Column['id'], widgets: ColumnWidget[]) {
 	if (column == null) return;
 	column.widgets = widgets;
 	columns[columnIndex] = column;
-	store.set('deck.columns', columns);
+	store.commit('deck.columns', columns);
 	saveDeck();
 }
 
@@ -288,7 +288,7 @@ export function updateColumnWidget(id: Column['id'], widgetId: string, widgetDat
 		data: widgetData,
 	} : w);
 	columns[columnIndex] = column;
-	store.set('deck.columns', columns);
+	store.commit('deck.columns', columns);
 	saveDeck();
 }
 
@@ -301,6 +301,6 @@ export function updateColumn(id: Column['id'], column: Partial<Column>) {
 		currentColumn[k] = v;
 	}
 	columns[columnIndex] = currentColumn;
-	store.set('deck.columns', columns);
+	store.commit('deck.columns', columns);
 	saveDeck();
 }
diff --git a/packages/frontend/src/pages/admin/abuses.vue b/packages/frontend/src/pages/admin/abuses.vue
index 8b396c1821..0de81056ce 100644
--- a/packages/frontend/src/pages/admin/abuses.vue
+++ b/packages/frontend/src/pages/admin/abuses.vue
@@ -93,7 +93,7 @@ function resolved(reportId) {
 }
 
 function closeTutorial() {
-	store.set('abusesTutorial', false);
+	store.commit('abusesTutorial', false);
 }
 
 const headerActions = computed(() => []);
diff --git a/packages/frontend/src/pages/drop-and-fusion.game.vue b/packages/frontend/src/pages/drop-and-fusion.game.vue
index 6a48cde290..d34702fd07 100644
--- a/packages/frontend/src/pages/drop-and-fusion.game.vue
+++ b/packages/frontend/src/pages/drop-and-fusion.game.vue
@@ -858,7 +858,7 @@ function updateSettings<
 >(key: K, value: V) {
 	const changes: { [P in K]?: V } = {};
 	changes[key] = value;
-	prefer.set('game.dropAndFusion', {
+	prefer.commit('game.dropAndFusion', {
 		...prefer.s['game.dropAndFusion'],
 		...changes,
 	});
diff --git a/packages/frontend/src/pages/settings/drive.vue b/packages/frontend/src/pages/settings/drive.vue
index aab04ebc9c..8e7c7e82df 100644
--- a/packages/frontend/src/pages/settings/drive.vue
+++ b/packages/frontend/src/pages/settings/drive.vue
@@ -144,7 +144,7 @@ if (prefer.s.uploadFolder) {
 
 function chooseUploadFolder() {
 	os.selectDriveFolder(false).then(async folder => {
-		prefer.set('uploadFolder', folder[0] ? folder[0].id : null);
+		prefer.commit('uploadFolder', folder[0] ? folder[0].id : null);
 		os.success();
 		if (prefer.s.uploadFolder) {
 			uploadFolder.value = await misskeyApi('drive/folders/show', {
diff --git a/packages/frontend/src/pages/settings/emoji-picker.vue b/packages/frontend/src/pages/settings/emoji-picker.vue
index 36cebb05dc..b833180083 100644
--- a/packages/frontend/src/pages/settings/emoji-picker.vue
+++ b/packages/frontend/src/pages/settings/emoji-picker.vue
@@ -240,13 +240,13 @@ function getHTMLElement(ev: MouseEvent): HTMLElement {
 }
 
 watch(pinnedEmojisForReaction, () => {
-	store.set('reactions', pinnedEmojisForReaction.value);
+	store.commit('reactions', pinnedEmojisForReaction.value);
 }, {
 	deep: true,
 });
 
 watch(pinnedEmojis, () => {
-	store.set('pinnedEmojis', pinnedEmojis.value);
+	store.commit('pinnedEmojis', pinnedEmojis.value);
 }, {
 	deep: true,
 });
diff --git a/packages/frontend/src/pages/settings/index.vue b/packages/frontend/src/pages/settings/index.vue
index b782a575c7..d72b336616 100644
--- a/packages/frontend/src/pages/settings/index.vue
+++ b/packages/frontend/src/pages/settings/index.vue
@@ -72,7 +72,7 @@ const ro = new ResizeObserver((entries, observer) => {
 });
 
 function skipAutoBackup() {
-	store.set('showPreferencesAutoCloudBackupSuggestion', false);
+	store.commit('showPreferencesAutoCloudBackupSuggestion', false);
 }
 
 const menuDef = computed<SuperMenuDef[]>(() => [{
diff --git a/packages/frontend/src/pages/settings/navbar.vue b/packages/frontend/src/pages/settings/navbar.vue
index d8afbcdb27..db7f4dac3c 100644
--- a/packages/frontend/src/pages/settings/navbar.vue
+++ b/packages/frontend/src/pages/settings/navbar.vue
@@ -91,7 +91,7 @@ function removeItem(index: number) {
 }
 
 async function save() {
-	prefer.set('menu', items.value.map(x => x.type));
+	prefer.commit('menu', items.value.map(x => x.type));
 	await reloadAsk({ reason: i18n.ts.reloadToApplySetting, unison: true });
 }
 
diff --git a/packages/frontend/src/pages/settings/preferences.vue b/packages/frontend/src/pages/settings/preferences.vue
index bf762d8aeb..f92539e02b 100644
--- a/packages/frontend/src/pages/settings/preferences.vue
+++ b/packages/frontend/src/pages/settings/preferences.vue
@@ -461,7 +461,7 @@ function downloadEmojiIndex(lang: typeof emojiIndexLangs[number]) {
 		}
 
 		currentIndexes[lang] = await download();
-		await store.set('additionalUnicodeEmojiIndexes', currentIndexes);
+		await store.commit('additionalUnicodeEmojiIndexes', currentIndexes);
 	}
 
 	os.promiseDialog(main());
@@ -471,7 +471,7 @@ function removeEmojiIndex(lang: string) {
 	async function main() {
 		const currentIndexes = store.s.additionalUnicodeEmojiIndexes;
 		delete currentIndexes[lang];
-		await store.set('additionalUnicodeEmojiIndexes', currentIndexes);
+		await store.commit('additionalUnicodeEmojiIndexes', currentIndexes);
 	}
 
 	os.promiseDialog(main());
@@ -488,11 +488,11 @@ async function setPinnedList() {
 	if (canceled) return;
 	if (list == null) return;
 
-	prefer.set('pinnedUserLists', [list]);
+	prefer.commit('pinnedUserLists', [list]);
 }
 
 function removePinnedList() {
-	prefer.set('pinnedUserLists', []);
+	prefer.commit('pinnedUserLists', []);
 }
 
 function enableAllDataSaver() {
@@ -512,7 +512,7 @@ function disableAllDataSaver() {
 }
 
 watch(dataSaver, (to) => {
-	prefer.set('dataSaver', to);
+	prefer.commit('dataSaver', to);
 }, {
 	deep: true,
 });
diff --git a/packages/frontend/src/pages/settings/sounds.vue b/packages/frontend/src/pages/settings/sounds.vue
index 7d800a8a37..ea634646f6 100644
--- a/packages/frontend/src/pages/settings/sounds.vue
+++ b/packages/frontend/src/pages/settings/sounds.vue
@@ -101,14 +101,14 @@ async function updated(type: keyof typeof sounds.value, sound) {
 		volume: sound.volume,
 	};
 
-	prefer.set(`sound.on.${type}`, v);
+	prefer.commit(`sound.on.${type}`, v);
 	sounds.value[type] = v;
 }
 
 function reset() {
 	for (const sound of Object.keys(sounds.value) as Array<keyof typeof sounds.value>) {
 		const v = PREF_DEF[`sound.on.${sound}`].default;
-		prefer.set(`sound.on.${sound}`, v);
+		prefer.commit(`sound.on.${sound}`, v);
 		sounds.value[sound] = v;
 	}
 }
diff --git a/packages/frontend/src/pages/settings/statusbar.statusbar.vue b/packages/frontend/src/pages/settings/statusbar.statusbar.vue
index 55d976295a..dbb640123a 100644
--- a/packages/frontend/src/pages/settings/statusbar.statusbar.vue
+++ b/packages/frontend/src/pages/settings/statusbar.statusbar.vue
@@ -137,10 +137,10 @@ async function save() {
 	const i = prefer.s.statusbars.findIndex(x => x.id === props._id);
 	const statusbars = deepClone(prefer.s.statusbars);
 	statusbars[i] = deepClone(statusbar);
-	prefer.set('statusbars', statusbars);
+	prefer.commit('statusbars', statusbars);
 }
 
 function del() {
-	prefer.set('statusbars', prefer.s.statusbars.filter(x => x.id !== props._id));
+	prefer.commit('statusbars', prefer.s.statusbars.filter(x => x.id !== props._id));
 }
 </script>
diff --git a/packages/frontend/src/pages/settings/statusbar.vue b/packages/frontend/src/pages/settings/statusbar.vue
index 2737af3aa4..7b09093c85 100644
--- a/packages/frontend/src/pages/settings/statusbar.vue
+++ b/packages/frontend/src/pages/settings/statusbar.vue
@@ -37,7 +37,7 @@ onMounted(() => {
 });
 
 async function add() {
-	prefer.set('statusbars', [...statusbars.value, {
+	prefer.commit('statusbars', [...statusbars.value, {
 		id: uuid(),
 		type: null,
 		black: false,
diff --git a/packages/frontend/src/pages/settings/theme.vue b/packages/frontend/src/pages/settings/theme.vue
index bb61f25c61..27165e0e51 100644
--- a/packages/frontend/src/pages/settings/theme.vue
+++ b/packages/frontend/src/pages/settings/theme.vue
@@ -179,7 +179,7 @@ const darkThemeId = computed({
 	set(id) {
 		const t = themes.value.find(x => x.id === id);
 		if (t) { // テーマエディタでテーマを作成したときなどは、themesに反映されないため undefined になる
-			prefer.set('darkTheme', t);
+			prefer.commit('darkTheme', t);
 		}
 	},
 });
@@ -191,7 +191,7 @@ const lightThemeId = computed({
 	set(id) {
 		const t = themes.value.find(x => x.id === id);
 		if (t) { // テーマエディタでテーマを作成したときなどは、themesに反映されないため undefined になる
-			prefer.set('lightTheme', t);
+			prefer.commit('lightTheme', t);
 		}
 	},
 });
@@ -203,7 +203,7 @@ const themesCount = installedThemes.value.length;
 
 watch(syncDeviceDarkMode, () => {
 	if (syncDeviceDarkMode.value) {
-		store.set('darkMode', isDeviceDarkmode());
+		store.commit('darkMode', isDeviceDarkmode());
 	}
 });
 
diff --git a/packages/frontend/src/pages/tag.vue b/packages/frontend/src/pages/tag.vue
index f7e0302ca7..582bf3ee38 100644
--- a/packages/frontend/src/pages/tag.vue
+++ b/packages/frontend/src/pages/tag.vue
@@ -44,11 +44,11 @@ const pagination = {
 const notes = ref<InstanceType<typeof MkNotes>>();
 
 async function post() {
-	store.set('postFormHashtags', props.tag);
-	store.set('postFormWithHashtags', true);
+	store.commit('postFormHashtags', props.tag);
+	store.commit('postFormWithHashtags', true);
 	await os.post();
-	store.set('postFormHashtags', '');
-	store.set('postFormWithHashtags', false);
+	store.commit('postFormHashtags', '');
+	store.commit('postFormWithHashtags', false);
 	notes.value?.pagingComponent?.reload();
 }
 
diff --git a/packages/frontend/src/pages/theme-editor.vue b/packages/frontend/src/pages/theme-editor.vue
index 64e16987a9..43ac5f38d7 100644
--- a/packages/frontend/src/pages/theme-editor.vue
+++ b/packages/frontend/src/pages/theme-editor.vue
@@ -201,9 +201,9 @@ async function saveAs() {
 	await addTheme(theme.value);
 	applyTheme(theme.value);
 	if (store.s.darkMode) {
-		prefer.set('darkTheme', theme.value);
+		prefer.commit('darkTheme', theme.value);
 	} else {
-		prefer.set('lightTheme', theme.value);
+		prefer.commit('lightTheme', theme.value);
 	}
 	changed.value = false;
 	os.alert({
diff --git a/packages/frontend/src/pages/timeline.vue b/packages/frontend/src/pages/timeline.vue
index 8d64b0a974..808100cf76 100644
--- a/packages/frontend/src/pages/timeline.vue
+++ b/packages/frontend/src/pages/timeline.vue
@@ -203,7 +203,7 @@ function saveSrc(newSrc: TimelinePageSrc): void {
 		out.userList = prefer.r.pinnedUserLists.value.find(l => l.id === id) ?? null;
 	}
 
-	store.set('tl', out);
+	store.commit('tl', out);
 	if (['local', 'global'].includes(newSrc)) {
 		srcWhenNotSignin.value = newSrc as 'local' | 'global';
 	}
@@ -212,7 +212,7 @@ function saveSrc(newSrc: TimelinePageSrc): void {
 function saveTlFilter(key: keyof typeof store.s.tl.filter, newValue: boolean) {
 	if (key !== 'withReplies' || $i) {
 		const out = deepMerge({ filter: { [key]: newValue } }, store.s.tl);
-		store.set('tl', out);
+		store.commit('tl', out);
 	}
 }
 
@@ -233,7 +233,7 @@ function closeTutorial(): void {
 	if (!isBasicTimeline(src.value)) return;
 	const before = store.s.timelineTutorials;
 	before[src.value] = true;
-	store.set('timelineTutorials', before);
+	store.commit('timelineTutorials', before);
 }
 
 function switchTlIfNeeded() {
diff --git a/packages/frontend/src/pizzax.ts b/packages/frontend/src/pizzax.ts
index 6908b87596..8609b4b5cc 100644
--- a/packages/frontend/src/pizzax.ts
+++ b/packages/frontend/src/pizzax.ts
@@ -44,7 +44,7 @@ export class Pizzax<Data extends Record<string, any>> extends EventEmitter<Pizza
 		}
 	}
 
-	public set<K extends keyof Data>(key: K, value: Data[K]) {
+	public commit<K extends keyof Data>(key: K, value: Data[K]) {
 		this.r[key].value = this.s[key] = value;
 		this.emit('updated', { key, value });
 	}
@@ -84,7 +84,7 @@ export class Pizzax<Data extends Record<string, any>> extends EventEmitter<Pizza
 			},
 			set: (value) => {
 				const val = setter ? setter(value) : value;
-				this.set(key, val);
+				this.commit(key, val);
 				valueRef.value = val;
 			},
 		});
diff --git a/packages/frontend/src/plugin.ts b/packages/frontend/src/plugin.ts
index 25d69cd727..35781a64fe 100644
--- a/packages/frontend/src/plugin.ts
+++ b/packages/frontend/src/plugin.ts
@@ -115,7 +115,7 @@ export async function authorizePlugin(plugin: Plugin) {
 		});
 	});
 
-	store.set('pluginTokens', {
+	store.commit('pluginTokens', {
 		...store.s.pluginTokens,
 		[plugin.installId]: token,
 	});
@@ -145,7 +145,7 @@ export async function installPlugin(code: string, meta?: AiScriptPluginMeta) {
 		src: code,
 	};
 
-	prefer.set('plugins', prefer.s.plugins.concat(plugin));
+	prefer.commit('plugins', prefer.s.plugins.concat(plugin));
 
 	await authorizePlugin(plugin);
 
@@ -154,14 +154,14 @@ export async function installPlugin(code: string, meta?: AiScriptPluginMeta) {
 
 export async function uninstallPlugin(plugin: Plugin) {
 	abortPlugin(plugin);
-	prefer.set('plugins', prefer.s.plugins.filter(x => x.installId !== plugin.installId));
+	prefer.commit('plugins', prefer.s.plugins.filter(x => x.installId !== plugin.installId));
 	if (Object.hasOwn(store.s.pluginTokens, plugin.installId)) {
 		await os.apiWithDialog('i/revoke-token', {
 			token: store.s.pluginTokens[plugin.installId],
 		});
 		const pluginTokens = { ...store.s.pluginTokens };
 		delete pluginTokens[plugin.installId];
-		store.set('pluginTokens', pluginTokens);
+		store.commit('pluginTokens', pluginTokens);
 	}
 }
 
@@ -311,13 +311,13 @@ export async function configPlugin(plugin: Plugin) {
 	const { canceled, result } = await os.form(plugin.name, config);
 	if (canceled) return;
 
-	prefer.set('plugins', prefer.s.plugins.map(x => x.installId === plugin.installId ? { ...x, configData: result } : x));
+	prefer.commit('plugins', prefer.s.plugins.map(x => x.installId === plugin.installId ? { ...x, configData: result } : x));
 
 	reloadPlugin(plugin);
 }
 
 export function changePluginActive(plugin: Plugin, active: boolean) {
-	prefer.set('plugins', prefer.s.plugins.map(x => x.installId === plugin.installId ? { ...x, active } : x));
+	prefer.commit('plugins', prefer.s.plugins.map(x => x.installId === plugin.installId ? { ...x, active } : x));
 
 	if (active) {
 		launchPlugin(plugin.installId);
diff --git a/packages/frontend/src/preferences/profile.ts b/packages/frontend/src/preferences/profile.ts
index 146373039c..c693112937 100644
--- a/packages/frontend/src/preferences/profile.ts
+++ b/packages/frontend/src/preferences/profile.ts
@@ -222,7 +222,7 @@ export class ProfileManager extends EventEmitter<{
 			text: i18n.ts.resetToDefaultValue,
 			danger: true,
 			action: () => {
-				this.store.set(key, PREF_DEF[key].default);
+				this.store.commit(key, PREF_DEF[key].default);
 			},
 		}, {
 			type: 'divider',
diff --git a/packages/frontend/src/preferences/utility.ts b/packages/frontend/src/preferences/utility.ts
index 64b2bde4de..064eb0e8cf 100644
--- a/packages/frontend/src/preferences/utility.ts
+++ b/packages/frontend/src/preferences/utility.ts
@@ -34,9 +34,9 @@ export function getPreferencesProfileMenu(): MenuItem[] {
 				return;
 			}
 
-			store.set('enablePreferencesAutoCloudBackup', true);
+			store.commit('enablePreferencesAutoCloudBackup', true);
 		} else {
-			store.set('enablePreferencesAutoCloudBackup', false);
+			store.commit('enablePreferencesAutoCloudBackup', false);
 		}
 	});
 
@@ -183,7 +183,7 @@ export async function restoreFromCloudBackup() {
 
 	miLocalStorage.setItem('preferences', JSON.stringify(profile));
 	miLocalStorage.setItem('hidePreferencesRestoreSuggestion', 'true');
-	store.set('enablePreferencesAutoCloudBackup', true);
+	store.commit('enablePreferencesAutoCloudBackup', true);
 	shouldSuggestRestoreBackup.value = false;
 	unisonReload();
 }
@@ -197,7 +197,7 @@ export async function enableAutoBackup() {
 		return;
 	}
 
-	store.set('enablePreferencesAutoCloudBackup', true);
+	store.commit('enablePreferencesAutoCloudBackup', true);
 }
 
 export const shouldSuggestRestoreBackup = ref(false);
diff --git a/packages/frontend/src/theme-store.ts b/packages/frontend/src/theme-store.ts
index c02005a15c..5d09ec27f9 100644
--- a/packages/frontend/src/theme-store.ts
+++ b/packages/frontend/src/theme-store.ts
@@ -23,11 +23,11 @@ export async function addTheme(theme: Theme): Promise<void> {
 	if (themes.some(t => t.id === theme.id)) {
 		throw new Error('already exists');
 	}
-	prefer.set('themes', [...themes, theme]);
+	prefer.commit('themes', [...themes, theme]);
 }
 
 export async function removeTheme(theme: Theme): Promise<void> {
 	if ($i == null) return;
 	const themes = getThemes().filter(t => t.id !== theme.id);
-	prefer.set('themes', themes);
+	prefer.commit('themes', themes);
 }
diff --git a/packages/frontend/src/ui/_common_/navbar.vue b/packages/frontend/src/ui/_common_/navbar.vue
index bd5e0bba8a..753fde5ea9 100644
--- a/packages/frontend/src/ui/_common_/navbar.vue
+++ b/packages/frontend/src/ui/_common_/navbar.vue
@@ -128,7 +128,7 @@ watch(store.r.menuDisplay, () => {
 });
 
 function toggleIconOnly() {
-	store.set('menuDisplay', iconOnly.value ? 'sideFull' : 'sideIcon');
+	store.commit('menuDisplay', iconOnly.value ? 'sideFull' : 'sideIcon');
 }
 
 function openAccountMenu(ev: MouseEvent) {
diff --git a/packages/frontend/src/ui/classic.vue b/packages/frontend/src/ui/classic.vue
index 3d4e8ed19d..3faacc5125 100644
--- a/packages/frontend/src/ui/classic.vue
+++ b/packages/frontend/src/ui/classic.vue
@@ -144,7 +144,7 @@ if (window.innerWidth < 1024) {
 document.documentElement.style.overflowY = 'scroll';
 
 if (prefer.s.widgets.length === 0) {
-	prefer.set('widgets', [{
+	prefer.commit('widgets', [{
 		name: 'calendar',
 		id: 'a', place: null, data: {},
 	}, {
diff --git a/packages/frontend/src/ui/deck.vue b/packages/frontend/src/ui/deck.vue
index 08f8ca4f65..d7a336b775 100644
--- a/packages/frontend/src/ui/deck.vue
+++ b/packages/frontend/src/ui/deck.vue
@@ -222,7 +222,7 @@ function changeProfile(ev: MouseEvent) {
 		items.push(...(profiles.filter(k => k !== store.s['deck.profile']).map(k => ({
 			text: k,
 			action: () => {
-				store.set('deck.profile', k);
+				store.commit('deck.profile', k);
 				unisonReload();
 			},
 		}))), { type: 'divider' as const }, {
@@ -237,7 +237,7 @@ function changeProfile(ev: MouseEvent) {
 				if (canceled || name == null) return;
 
 				os.promiseDialog((async () => {
-					await store.set('deck.profile', name);
+					await store.commit('deck.profile', name);
 					await forceSaveDeck();
 				})(), () => {
 					unisonReload();
@@ -258,13 +258,13 @@ async function deleteProfile() {
 
 	os.promiseDialog((async () => {
 		if (store.s['deck.profile'] === 'default') {
-			await store.set('deck.columns', []);
-			await store.set('deck.layout', []);
+			await store.commit('deck.columns', []);
+			await store.commit('deck.layout', []);
 			await forceSaveDeck();
 		} else {
 			await deleteProfile_(store.s['deck.profile']);
 		}
-		await store.set('deck.profile', 'default');
+		await store.commit('deck.profile', 'default');
 	})(), () => {
 		unisonReload();
 	});
diff --git a/packages/frontend/src/ui/universal.vue b/packages/frontend/src/ui/universal.vue
index 633eca7542..8d0015a046 100644
--- a/packages/frontend/src/ui/universal.vue
+++ b/packages/frontend/src/ui/universal.vue
@@ -178,7 +178,7 @@ if (window.innerWidth > 1024) {
 }
 
 if (prefer.s.widgets.length === 0) {
-	prefer.set('widgets', [{
+	prefer.commit('widgets', [{
 		name: 'calendar',
 		id: 'a', place: 'right', data: {},
 	}, {
diff --git a/packages/frontend/src/ui/universal.widgets.vue b/packages/frontend/src/ui/universal.widgets.vue
index ea2b7f2cf2..1a6d62e19b 100644
--- a/packages/frontend/src/ui/universal.widgets.vue
+++ b/packages/frontend/src/ui/universal.widgets.vue
@@ -37,18 +37,18 @@ const widgets = computed(() => {
 });
 
 function addWidget(widget) {
-	prefer.set('widgets', [{
+	prefer.commit('widgets', [{
 		...widget,
 		place: props.place,
 	}, ...prefer.s.widgets]);
 }
 
 function removeWidget(widget) {
-	prefer.set('widgets', prefer.s.widgets.filter(w => w.id !== widget.id));
+	prefer.commit('widgets', prefer.s.widgets.filter(w => w.id !== widget.id));
 }
 
 function updateWidget({ id, data }) {
-	prefer.set('widgets', prefer.s.widgets.map(w => w.id === id ? {
+	prefer.commit('widgets', prefer.s.widgets.map(w => w.id === id ? {
 		...w,
 		data,
 		place: props.place,
@@ -57,17 +57,17 @@ function updateWidget({ id, data }) {
 
 function updateWidgets(thisWidgets) {
 	if (props.place === null) {
-		prefer.set('widgets', thisWidgets);
+		prefer.commit('widgets', thisWidgets);
 		return;
 	}
 	if (props.place === 'left') {
-		prefer.set('widgets', [
+		prefer.commit('widgets', [
 			...thisWidgets.map(w => ({ ...w, place: 'left' })),
 			...prefer.s.widgets.filter(w => w.place !== 'left' && !thisWidgets.some(t => w.id === t.id)),
 		]);
 		return;
 	}
-	prefer.set('widgets', [
+	prefer.commit('widgets', [
 		...prefer.s.widgets.filter(w => w.place === 'left' && !thisWidgets.some(t => w.id === t.id)),
 		...thisWidgets.map(w => ({ ...w, place: 'right' })),
 	]);
diff --git a/packages/frontend/src/widgets/WidgetMemo.vue b/packages/frontend/src/widgets/WidgetMemo.vue
index 3df5c5bfd7..b92ac6fdd8 100644
--- a/packages/frontend/src/widgets/WidgetMemo.vue
+++ b/packages/frontend/src/widgets/WidgetMemo.vue
@@ -53,7 +53,7 @@ const changed = ref(false);
 let timeoutId;
 
 const saveMemo = () => {
-	store.set('memo', text.value);
+	store.commit('memo', text.value);
 	changed.value = false;
 };