refactor(frontend): use* 関数の格納場所のフォルダ名を composables に変更 (#16004)

* refactor(frontend): use* 関数の格納場所を正式名称（composables）に変更

* migrate

* move useLoading

8 files changed, 0 insertions, 915 deletions

diff --git a/packages/frontend/src/use/use-chart-tooltip.ts b/packages/frontend/src/use/use-chart-tooltip.ts
deleted file mode 100644
index bba64fc6ee..0000000000
--- a/packages/frontend/src/use/use-chart-tooltip.ts
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-import { onUnmounted, onDeactivated, ref } from 'vue';
-import * as os from '@/os.js';
-import MkChartTooltip from '@/components/MkChartTooltip.vue';
-
-export function useChartTooltip(opts: { position: 'top' | 'middle' } = { position: 'top' }) {
-	const tooltipShowing = ref(false);
-	const tooltipX = ref(0);
-	const tooltipY = ref(0);
-	const tooltipTitle = ref<string | null>(null);
-	const tooltipSeries = ref<{
-		backgroundColor: string;
-		borderColor: string;
-		text: string;
-	}[] | null>(null);
-	const { dispose: disposeTooltipComponent } = os.popup(MkChartTooltip, {
-		showing: tooltipShowing,
-		x: tooltipX,
-		y: tooltipY,
-		title: tooltipTitle,
-		series: tooltipSeries,
-	}, {});
-
-	onUnmounted(() => {
-		disposeTooltipComponent();
-	});
-
-	onDeactivated(() => {
-		tooltipShowing.value = false;
-	});
-
-	function handler(context) {
-		if (context.tooltip.opacity === 0) {
-			tooltipShowing.value = false;
-			return;
-		}
-
-		tooltipTitle.value = context.tooltip.title[0];
-		tooltipSeries.value = context.tooltip.body.map((b, i) => ({
-			backgroundColor: context.tooltip.labelColors[i].backgroundColor,
-			borderColor: context.tooltip.labelColors[i].borderColor,
-			text: b.lines[0],
-		}));
-
-		const rect = context.chart.canvas.getBoundingClientRect();
-
-		tooltipShowing.value = true;
-		tooltipX.value = rect.left + window.scrollX + context.tooltip.caretX;
-		if (opts.position === 'top') {
-			tooltipY.value = rect.top + window.scrollY;
-		} else if (opts.position === 'middle') {
-			tooltipY.value = rect.top + window.scrollY + context.tooltip.caretY;
-		}
-	}
-
-	return {
-		handler,
-	};
-}
diff --git a/packages/frontend/src/use/use-form.ts b/packages/frontend/src/use/use-form.ts
deleted file mode 100644
index 1c93557413..0000000000
--- a/packages/frontend/src/use/use-form.ts
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-import { computed, reactive, watch } from 'vue';
-import type { Reactive } from 'vue';
-import { deepEqual } from '@/utility/deep-equal';
-
-function copy<T>(v: T): T {
-	return JSON.parse(JSON.stringify(v));
-}
-
-function unwrapReactive<T>(v: Reactive<T>): T {
-	return JSON.parse(JSON.stringify(v));
-}
-
-export function useForm<T extends Record<string, any>>(initialState: T, save: (newState: T) => Promise<void>) {
-	const currentState = reactive<T>(copy(initialState));
-	const previousState = reactive<T>(copy(initialState));
-
-	const modifiedStates = reactive<Record<keyof T, boolean>>({} as any);
-	for (const key in currentState) {
-		modifiedStates[key] = false;
-	}
-	const modified = computed(() => Object.values(modifiedStates).some(v => v));
-	const modifiedCount = computed(() => Object.values(modifiedStates).filter(v => v).length);
-
-	watch([currentState, previousState], () => {
-		for (const key in modifiedStates) {
-			modifiedStates[key] = !deepEqual(currentState[key], previousState[key]);
-		}
-	}, { deep: true });
-
-	async function _save() {
-		await save(unwrapReactive(currentState));
-		for (const key in currentState) {
-			previousState[key] = copy(currentState[key]);
-		}
-	}
-
-	function discard() {
-		for (const key in currentState) {
-			currentState[key] = copy(previousState[key]);
-		}
-	}
-
-	return {
-		state: currentState,
-		savedState: previousState,
-		modifiedStates,
-		modified,
-		modifiedCount,
-		save: _save,
-		discard,
-	};
-}
diff --git a/packages/frontend/src/use/use-leave-guard.ts b/packages/frontend/src/use/use-leave-guard.ts
deleted file mode 100644
index 395c12a756..0000000000
--- a/packages/frontend/src/use/use-leave-guard.ts
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-import type { Ref } from 'vue';
-
-export function useLeaveGuard(enabled: Ref<boolean>) {
-	/* TODO
-	const setLeaveGuard = inject('setLeaveGuard');
-
-	if (setLeaveGuard) {
-		setLeaveGuard(async () => {
-			if (!enabled.value) return false;
-
-			const { canceled } = await os.confirm({
-				type: 'warning',
-				text: i18n.ts.leaveConfirm,
-			});
-
-			return canceled;
-		});
-	} else {
-		onBeforeRouteLeave(async (to, from) => {
-			if (!enabled.value) return true;
-
-			const { canceled } = await os.confirm({
-				type: 'warning',
-				text: i18n.ts.leaveConfirm,
-			});
-
-			return !canceled;
-		});
-	}
-	*/
-
-	/*
-	function onBeforeLeave(ev: BeforeUnloadEvent) {
-		if (enabled.value) {
-			ev.preventDefault();
-			ev.returnValue = '';
-		}
-	}
-
-	window.addEventListener('beforeunload', onBeforeLeave);
-	onUnmounted(() => {
-		window.removeEventListener('beforeunload', onBeforeLeave);
-	});
-	*/
-}
diff --git a/packages/frontend/src/use/use-mutation-observer.ts b/packages/frontend/src/use/use-mutation-observer.ts
deleted file mode 100644
index 7b774022dc..0000000000
--- a/packages/frontend/src/use/use-mutation-observer.ts
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-import { onUnmounted, watch } from 'vue';
-import type { Ref } from 'vue';
-
-export function useMutationObserver(targetNodeRef: Ref<HTMLElement | null | undefined>, options: MutationObserverInit, callback: MutationCallback): void {
-	const observer = new MutationObserver(callback);
-
-	watch(targetNodeRef, (targetNode) => {
-		if (targetNode) {
-			observer.observe(targetNode, options);
-		}
-	}, { immediate: true });
-
-	onUnmounted(() => {
-		observer.disconnect();
-	});
-}
diff --git a/packages/frontend/src/use/use-note-capture.ts b/packages/frontend/src/use/use-note-capture.ts
deleted file mode 100644
index 2f33c25a0a..0000000000
--- a/packages/frontend/src/use/use-note-capture.ts
+++ /dev/null
@@ -1,283 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-import { onUnmounted } from 'vue';
-import * as Misskey from 'misskey-js';
-import { EventEmitter } from 'eventemitter3';
-import type { Reactive, Ref } from 'vue';
-import { useStream } from '@/stream.js';
-import { $i } from '@/i.js';
-import { store } from '@/store.js';
-import { misskeyApi } from '@/utility/misskey-api.js';
-import { prefer } from '@/preferences.js';
-import { globalEvents } from '@/events.js';
-
-export const noteEvents = new EventEmitter<{
-	[ev: `reacted:${string}`]: (ctx: { userId: Misskey.entities.User['id']; reaction: string; emoji?: { name: string; url: string; }; }) => void;
-	[ev: `unreacted:${string}`]: (ctx: { userId: Misskey.entities.User['id']; reaction: string; emoji?: { name: string; url: string; }; }) => void;
-	[ev: `pollVoted:${string}`]: (ctx: { userId: Misskey.entities.User['id']; choice: string; }) => void;
-}>();
-
-const fetchEvent = new EventEmitter<{
-	[id: string]: Pick<Misskey.entities.Note, 'reactions' | 'reactionEmojis'>;
-}>();
-
-const pollingQueue = new Map<string, {
-	referenceCount: number;
-	lastAddedAt: number;
-}>();
-
-function pollingEnqueue(note: Pick<Misskey.entities.Note, 'id' | 'createdAt'>) {
-	if (pollingQueue.has(note.id)) {
-		const data = pollingQueue.get(note.id)!;
-		pollingQueue.set(note.id, {
-			...data,
-			referenceCount: data.referenceCount + 1,
-			lastAddedAt: Date.now(),
-		});
-	} else {
-		pollingQueue.set(note.id, {
-			referenceCount: 1,
-			lastAddedAt: Date.now(),
-		});
-	}
-}
-
-function pollingDequeue(note: Pick<Misskey.entities.Note, 'id' | 'createdAt'>) {
-	const data = pollingQueue.get(note.id);
-	if (data == null) return;
-
-	if (data.referenceCount === 1) {
-		pollingQueue.delete(note.id);
-	} else {
-		pollingQueue.set(note.id, {
-			...data,
-			referenceCount: data.referenceCount - 1,
-		});
-	}
-}
-
-const CAPTURE_MAX = 30;
-const MIN_POLLING_INTERVAL = 1000 * 10;
-const POLLING_INTERVAL =
-	prefer.s.pollingInterval === 1 ? MIN_POLLING_INTERVAL * 1.5 * 1.5 :
-	prefer.s.pollingInterval === 2 ? MIN_POLLING_INTERVAL * 1.5 :
-	prefer.s.pollingInterval === 3 ? MIN_POLLING_INTERVAL :
-	MIN_POLLING_INTERVAL;
-
-window.setInterval(() => {
-	const ids = [...pollingQueue.entries()]
-		.filter(([k, v]) => Date.now() - v.lastAddedAt < 1000 * 60 * 5) // 追加されてから一定時間経過したものは省く
-		.map(([k, v]) => k)
-		.sort((a, b) => (a > b ? -1 : 1)) // 新しいものを優先するためにIDで降順ソート
-		.slice(0, CAPTURE_MAX);
-
-	if (ids.length === 0) return;
-	if (window.document.hidden) return;
-
-	// まとめてリクエストするのではなく、個別にHTTPリクエスト投げてCDNにキャッシュさせた方がサーバーの負荷低減には良いかもしれない？
-	misskeyApi('notes/show-partial-bulk', {
-		noteIds: ids,
-	}).then((items) => {
-		for (const item of items) {
-			fetchEvent.emit(item.id, {
-				reactions: item.reactions,
-				reactionEmojis: item.reactionEmojis,
-			});
-		}
-	});
-}, POLLING_INTERVAL);
-
-function pollingSubscribe(props: {
-	note: Pick<Misskey.entities.Note, 'id' | 'createdAt'>;
-	$note: ReactiveNoteData;
-}) {
-	const { note, $note } = props;
-
-	function onFetched(data: Pick<Misskey.entities.Note, 'reactions' | 'reactionEmojis'>): void {
-		$note.reactions = data.reactions;
-		$note.reactionCount = Object.values(data.reactions).reduce((a, b) => a + b, 0);
-		$note.reactionEmojis = data.reactionEmojis;
-	}
-
-	pollingEnqueue(note);
-	fetchEvent.on(note.id, onFetched);
-
-	onUnmounted(() => {
-		pollingDequeue(note);
-		fetchEvent.off(note.id, onFetched);
-	});
-}
-
-function realtimeSubscribe(props: {
-	note: Pick<Misskey.entities.Note, 'id' | 'createdAt'>;
-}): void {
-	const note = props.note;
-	const connection = useStream();
-
-	function onStreamNoteUpdated(noteData): void {
-		const { type, id, body } = noteData;
-
-		if (id !== note.id) return;
-
-		switch (type) {
-			case 'reacted': {
-				noteEvents.emit(`reacted:${id}`, {
-					userId: body.userId,
-					reaction: body.reaction,
-					emoji: body.emoji,
-				});
-				break;
-			}
-
-			case 'unreacted': {
-				noteEvents.emit(`unreacted:${id}`, {
-					userId: body.userId,
-					reaction: body.reaction,
-					emoji: body.emoji,
-				});
-				break;
-			}
-
-			case 'pollVoted': {
-				noteEvents.emit(`pollVoted:${id}`, {
-					userId: body.userId,
-					choice: body.choice,
-				});
-				break;
-			}
-
-			case 'deleted': {
-				globalEvents.emit('noteDeleted', id);
-				break;
-			}
-		}
-	}
-
-	function capture(withHandler = false): void {
-		connection.send('sr', { id: note.id });
-		if (withHandler) connection.on('noteUpdated', onStreamNoteUpdated);
-	}
-
-	function decapture(withHandler = false): void {
-		connection.send('un', { id: note.id });
-		if (withHandler) connection.off('noteUpdated', onStreamNoteUpdated);
-	}
-
-	function onStreamConnected() {
-		capture(false);
-	}
-
-	capture(true);
-	connection.on('_connected_', onStreamConnected);
-
-	onUnmounted(() => {
-		decapture(true);
-		connection.off('_connected_', onStreamConnected);
-	});
-}
-
-type ReactiveNoteData = Reactive<{
-	reactions: Misskey.entities.Note['reactions'];
-	reactionCount: Misskey.entities.Note['reactionCount'];
-	reactionEmojis: Misskey.entities.Note['reactionEmojis'];
-	myReaction: Misskey.entities.Note['myReaction'];
-	pollChoices: NonNullable<Misskey.entities.Note['poll']>['choices'];
-}>;
-
-export function useNoteCapture(props: {
-	note: Pick<Misskey.entities.Note, 'id' | 'createdAt'>;
-	parentNote: Misskey.entities.Note | null;
-	$note: ReactiveNoteData;
-}) {
-	const { note, parentNote, $note } = props;
-
-	noteEvents.on(`reacted:${note.id}`, onReacted);
-	noteEvents.on(`unreacted:${note.id}`, onUnreacted);
-	noteEvents.on(`pollVoted:${note.id}`, onPollVoted);
-
-	let latestReactedKey: string | null = null;
-	let latestUnreactedKey: string | null = null;
-	let latestPollVotedKey: string | null = null;
-
-	function onReacted(ctx: { userId: Misskey.entities.User['id']; reaction: string; emoji?: { name: string; url: string; }; }): void {
-		const newReactedKey = `${ctx.userId}:${ctx.reaction}`;
-		if (newReactedKey === latestReactedKey) return;
-		latestReactedKey = newReactedKey;
-
-		if (ctx.emoji && !(ctx.emoji.name in $note.reactionEmojis)) {
-			$note.reactionEmojis[ctx.emoji.name] = ctx.emoji.url;
-		}
-
-		const currentCount = $note.reactions[ctx.reaction] || 0;
-
-		$note.reactions[ctx.reaction] = currentCount + 1;
-		$note.reactionCount += 1;
-
-		if ($i && (ctx.userId === $i.id)) {
-			$note.myReaction = ctx.reaction;
-		}
-	}
-
-	function onUnreacted(ctx: { userId: Misskey.entities.User['id']; reaction: string; emoji?: { name: string; url: string; }; }): void {
-		const newUnreactedKey = `${ctx.userId}:${ctx.reaction}`;
-		if (newUnreactedKey === latestUnreactedKey) return;
-		latestUnreactedKey = newUnreactedKey;
-
-		const currentCount = $note.reactions[ctx.reaction] || 0;
-
-		$note.reactions[ctx.reaction] = Math.max(0, currentCount - 1);
-		$note.reactionCount = Math.max(0, $note.reactionCount - 1);
-		if ($note.reactions[ctx.reaction] === 0) delete $note.reactions[ctx.reaction];
-
-		if ($i && (ctx.userId === $i.id)) {
-			$note.myReaction = null;
-		}
-	}
-
-	function onPollVoted(ctx: { userId: Misskey.entities.User['id']; choice: string; }): void {
-		const newPollVotedKey = `${ctx.userId}:${ctx.choice}`;
-		if (newPollVotedKey === latestPollVotedKey) return;
-		latestPollVotedKey = newPollVotedKey;
-
-		const choices = [...$note.pollChoices];
-		choices[ctx.choice] = {
-			...choices[ctx.choice],
-			votes: choices[ctx.choice].votes + 1,
-			...($i && (ctx.userId === $i.id) ? {
-				isVoted: true,
-			} : {}),
-		};
-
-		$note.pollChoices = choices;
-	}
-
-	onUnmounted(() => {
-		noteEvents.off(`reacted:${note.id}`, onReacted);
-		noteEvents.off(`unreacted:${note.id}`, onUnreacted);
-		noteEvents.off(`pollVoted:${note.id}`, onPollVoted);
-	});
-
-	// 投稿からある程度経過している(=タイムラインを遡って表示した)ノートは、イベントが発生する可能性が低いためそもそも購読しない
-	// ただし「リノートされたばかりの過去のノート」(= parentNoteが存在し、かつparentNoteの投稿日時が最近)はイベント発生が考えられるため購読する
-	// TODO: デバイスとサーバーの時計がズレていると不具合の元になるため、ズレを検知して警告を表示するなどのケアが必要かもしれない
-	if (parentNote == null) {
-		if ((Date.now() - new Date(note.createdAt).getTime()) > 1000 * 60 * 5) { // 5min
-			// リノートで表示されているノートでもないし、投稿からある程度経過しているので購読しない
-			return;
-		}
-	} else {
-		if ((Date.now() - new Date(parentNote.createdAt).getTime()) > 1000 * 60 * 5) { // 5min
-			// リノートで表示されているノートだが、リノートされてからある程度経過しているので購読しない
-			return;
-		}
-	}
-
-	if ($i && store.s.realtimeMode) {
-		realtimeSubscribe(props);
-	} else {
-		pollingSubscribe(props);
-	}
-}
diff --git a/packages/frontend/src/use/use-pagination.ts b/packages/frontend/src/use/use-pagination.ts
deleted file mode 100644
index f1042985bf..0000000000
--- a/packages/frontend/src/use/use-pagination.ts
+++ /dev/null
@@ -1,258 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-import { computed, isRef, onMounted, ref, shallowRef, triggerRef, watch } from 'vue';
-import * as Misskey from 'misskey-js';
-import type { ComputedRef, DeepReadonly, Ref, ShallowRef } from 'vue';
-import { misskeyApi } from '@/utility/misskey-api.js';
-
-const MAX_ITEMS = 30;
-const MAX_QUEUE_ITEMS = 100;
-const FIRST_FETCH_LIMIT = 15;
-const SECOND_FETCH_LIMIT = 30;
-
-export type MisskeyEntity = {
-	id: string;
-	createdAt: string;
-	_shouldInsertAd_?: boolean;
-	[x: string]: any;
-};
-
-export type PagingCtx<E extends keyof Misskey.Endpoints = keyof Misskey.Endpoints> = {
-	endpoint: E;
-	limit?: number;
-	params?: Misskey.Endpoints[E]['req'] | ComputedRef<Misskey.Endpoints[E]['req']>;
-
-	/**
-	 * 検索APIのような、ページング不可なエンドポイントを利用する場合
-	 * (そのようなAPIをこの関数で使うのは若干矛盾してるけど)
-	 */
-	noPaging?: boolean;
-
-	offsetMode?: boolean;
-
-	baseId?: MisskeyEntity['id'];
-	direction?: 'newer' | 'older';
-};
-
-export function usePagination<T extends MisskeyEntity>(props: {
-	ctx: PagingCtx;
-	useShallowRef?: boolean;
-}) {
-	const items = props.useShallowRef ? shallowRef<T[]>([]) : ref<T[]>([]);
-	let aheadQueue: T[] = [];
-	const queuedAheadItemsCount = ref(0);
-	const fetching = ref(true);
-	const fetchingOlder = ref(false);
-	const canFetchOlder = ref(false);
-	const error = ref(false);
-
-	// パラメータに何らかの変更があった際、再読込したい（チャンネル等のIDが変わったなど）
-	watch(() => [props.ctx.endpoint, props.ctx.params], init, { deep: true });
-
-	function getNewestId(): string | null | undefined {
-		// 様々な要因により並び順は保証されないのでソートが必要
-		if (aheadQueue.length > 0) {
-			return aheadQueue.map(x => x.id).sort().at(-1);
-		}
-		return items.value.map(x => x.id).sort().at(-1);
-	}
-
-	function getOldestId(): string | null | undefined {
-		// 様々な要因により並び順は保証されないのでソートが必要
-		return items.value.map(x => x.id).sort().at(0);
-	}
-
-	async function init(): Promise<void> {
-		items.value = [];
-		aheadQueue = [];
-		queuedAheadItemsCount.value = 0;
-		fetching.value = true;
-		const params = props.ctx.params ? isRef(props.ctx.params) ? props.ctx.params.value : props.ctx.params : {};
-
-		await misskeyApi<T[]>(props.ctx.endpoint, {
-			...params,
-			limit: props.ctx.limit ?? FIRST_FETCH_LIMIT,
-			allowPartial: true,
-			...(props.ctx.baseId && props.ctx.direction === 'newer' ? {
-				sinceId: props.ctx.baseId,
-			} : props.ctx.baseId && props.ctx.direction === 'older' ? {
-				untilId: props.ctx.baseId,
-			} : {}),
-		}).then(res => {
-			// 逆順で返ってくるので
-			if (props.ctx.baseId && props.ctx.direction === 'newer') {
-				res.reverse();
-			}
-
-			for (let i = 0; i < res.length; i++) {
-				const item = res[i];
-				if (i === 3) item._shouldInsertAd_ = true;
-			}
-
-			if (res.length === 0 || props.ctx.noPaging) {
-				pushItems(res);
-				canFetchOlder.value = false;
-			} else {
-				pushItems(res);
-				canFetchOlder.value = true;
-			}
-
-			error.value = false;
-			fetching.value = false;
-		}, err => {
-			error.value = true;
-			fetching.value = false;
-		});
-	}
-
-	function reload(): Promise<void> {
-		return init();
-	}
-
-	async function fetchOlder(): Promise<void> {
-		if (!canFetchOlder.value || fetching.value || fetchingOlder.value || items.value.length === 0) return;
-		fetchingOlder.value = true;
-		const params = props.ctx.params ? isRef(props.ctx.params) ? props.ctx.params.value : props.ctx.params : {};
-		await misskeyApi<T[]>(props.ctx.endpoint, {
-			...params,
-			limit: SECOND_FETCH_LIMIT,
-			...(props.ctx.offsetMode ? {
-				offset: items.value.length,
-			} : {
-				untilId: getOldestId(),
-			}),
-		}).then(res => {
-			for (let i = 0; i < res.length; i++) {
-				const item = res[i];
-				if (i === 10) item._shouldInsertAd_ = true;
-			}
-
-			if (res.length === 0) {
-				canFetchOlder.value = false;
-				fetchingOlder.value = false;
-			} else {
-				pushItems(res);
-				canFetchOlder.value = true;
-				fetchingOlder.value = false;
-			}
-		}, err => {
-			fetchingOlder.value = false;
-		});
-	}
-
-	async function fetchNewer(options: {
-		toQueue?: boolean;
-	} = {}): Promise<void> {
-		const params = props.ctx.params ? isRef(props.ctx.params) ? props.ctx.params.value : props.ctx.params : {};
-		await misskeyApi<T[]>(props.ctx.endpoint, {
-			...params,
-			limit: SECOND_FETCH_LIMIT,
-			...(props.ctx.offsetMode ? {
-				offset: items.value.length,
-			} : {
-				sinceId: getNewestId(),
-			}),
-		}).then(res => {
-			if (res.length === 0) return; // これやらないと余計なre-renderが走る
-
-			if (options.toQueue) {
-				aheadQueue.unshift(...res.toReversed());
-				if (aheadQueue.length > MAX_QUEUE_ITEMS) {
-					aheadQueue = aheadQueue.slice(0, MAX_QUEUE_ITEMS);
-				}
-				queuedAheadItemsCount.value = aheadQueue.length;
-			} else {
-				unshiftItems(res.toReversed());
-			}
-		});
-	}
-
-	function trim(trigger = true) {
-		if (items.value.length >= MAX_ITEMS) canFetchOlder.value = true;
-		items.value = items.value.slice(0, MAX_ITEMS);
-		if (props.useShallowRef && trigger) triggerRef(items);
-	}
-
-	function unshiftItems(newItems: T[]) {
-		if (newItems.length === 0) return; // これやらないと余計なre-renderが走る
-		items.value.unshift(...newItems.filter(x => !items.value.some(y => y.id === x.id))); // ストリーミングやポーリングのタイミングによっては重複することがあるため
-		trim(false);
-		if (props.useShallowRef) triggerRef(items);
-	}
-
-	function pushItems(oldItems: T[]) {
-		if (oldItems.length === 0) return; // これやらないと余計なre-renderが走る
-		items.value.push(...oldItems);
-		if (props.useShallowRef) triggerRef(items);
-	}
-
-	function prepend(item: T) {
-		if (items.value.some(x => x.id === item.id)) return;
-		items.value.unshift(item);
-		trim(false);
-		if (props.useShallowRef) triggerRef(items);
-	}
-
-	function enqueue(item: T) {
-		aheadQueue.unshift(item);
-		if (aheadQueue.length > MAX_QUEUE_ITEMS) {
-			aheadQueue.pop();
-		}
-		queuedAheadItemsCount.value = aheadQueue.length;
-	}
-
-	function releaseQueue() {
-		if (aheadQueue.length === 0) return; // これやらないと余計なre-renderが走る
-		unshiftItems(aheadQueue);
-		aheadQueue = [];
-		queuedAheadItemsCount.value = 0;
-	}
-
-	function removeItem(id: string) {
-		// TODO: queueからも消す
-
-		const index = items.value.findIndex(x => x.id === id);
-		if (index !== -1) {
-			items.value.splice(index, 1);
-			if (props.useShallowRef) triggerRef(items);
-		}
-	}
-
-	function updateItem(id: string, updator: (item: T) => T) {
-		// TODO: queueのも更新
-
-		const index = items.value.findIndex(x => x.id === id);
-		if (index !== -1) {
-			const item = items.value[index]!;
-			items.value[index] = updator(item);
-			if (props.useShallowRef) triggerRef(items);
-		}
-	}
-
-	onMounted(() => {
-		init();
-	});
-
-	return {
-		items: items as DeepReadonly<ShallowRef<T[]>>,
-		queuedAheadItemsCount,
-		fetching,
-		fetchingOlder,
-		canFetchOlder,
-		init,
-		reload,
-		fetchOlder,
-		fetchNewer,
-		unshiftItems,
-		prepend,
-		trim,
-		removeItem,
-		updateItem,
-		enqueue,
-		releaseQueue,
-		error,
-	};
-}
diff --git a/packages/frontend/src/use/use-scroll-position-keeper.ts b/packages/frontend/src/use/use-scroll-position-keeper.ts
deleted file mode 100644
index b584171cbe..0000000000
--- a/packages/frontend/src/use/use-scroll-position-keeper.ts
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-import { throttle } from 'throttle-debounce';
-import { nextTick, onActivated, onDeactivated, onUnmounted, watch } from 'vue';
-import type { Ref } from 'vue';
-
-// note render skippingがオンだとズレるため、遷移直前にスクロール範囲に表示されているdata-scroll-anchor要素を特定して、復元時に当該要素までスクロールするようにする
-
-// TODO: data-scroll-anchor がひとつも存在しない場合、または手動で useAnchor みたいなフラグをfalseで呼ばれた場合、単純にスクロール位置を使用する処理にフォールバックするようにする
-
-export function useScrollPositionKeeper(scrollContainerRef: Ref<HTMLElement | null | undefined>): void {
-	let anchorId: string | null = null;
-	let ready = true;
-
-	watch(scrollContainerRef, (el) => {
-		if (!el) return;
-
-		const onScroll = () => {
-			if (!el) return;
-			if (!ready) return;
-
-			const scrollContainerRect = el.getBoundingClientRect();
-			const viewPosition = scrollContainerRect.height / 2;
-
-			const anchorEls = el.querySelectorAll('[data-scroll-anchor]');
-			for (let i = anchorEls.length - 1; i > -1; i--) { // 下から見た方が速い
-				const anchorEl = anchorEls[i] as HTMLElement;
-				const anchorRect = anchorEl.getBoundingClientRect();
-				const anchorTop = anchorRect.top;
-				const anchorBottom = anchorRect.bottom;
-				if (anchorTop <= viewPosition && anchorBottom >= viewPosition) {
-					anchorId = anchorEl.getAttribute('data-scroll-anchor');
-					break;
-				}
-			}
-		};
-
-		// ほんとはscrollイベントじゃなくてonBeforeDeactivatedでやりたい
-		// https://github.com/vuejs/vue/issues/9454
-		// https://github.com/vuejs/rfcs/pull/284
-		el.addEventListener('scroll', throttle(1000, onScroll), { passive: true });
-	}, {
-		immediate: true,
-	});
-
-	const restore = () => {
-		if (!anchorId) return;
-		const scrollContainer = scrollContainerRef.value;
-		if (!scrollContainer) return;
-		const scrollAnchorEl = scrollContainer.querySelector(`[data-scroll-anchor="${anchorId}"]`);
-		if (!scrollAnchorEl) return;
-		scrollAnchorEl.scrollIntoView({
-			behavior: 'instant',
-			block: 'center',
-			inline: 'center',
-		});
-	};
-
-	onDeactivated(() => {
-		ready = false;
-	});
-
-	onActivated(() => {
-		restore();
-		nextTick(() => {
-			restore();
-			window.setTimeout(() => {
-				restore();
-
-				ready = true;
-			}, 100);
-		});
-	});
-}
diff --git a/packages/frontend/src/use/use-tooltip.ts b/packages/frontend/src/use/use-tooltip.ts
deleted file mode 100644
index af76a3a1e8..0000000000
--- a/packages/frontend/src/use/use-tooltip.ts
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-import { ref, watch, onUnmounted } from 'vue';
-import type { Ref } from 'vue';
-
-export function useTooltip(
-	elRef: Ref<HTMLElement | { $el: HTMLElement } | null | undefined>,
-	onShow: (showing: Ref<boolean>) => void,
-	delay = 300,
-): void {
-	let isHovering = false;
-
-	// iOS(Androidも？)では、要素をタップした直後に(おせっかいで)mouseoverイベントを発火させたりするため、それを無視するためのフラグ
-	// 無視しないと、画面に触れてないのにツールチップが出たりし、ユーザビリティが損なわれる
-	// TODO: 一度でもタップすると二度とマウスでツールチップ出せなくなるのをどうにかする 定期的にfalseに戻すとか...？
-	let shouldIgnoreMouseover = false;
-
-	let timeoutId: number;
-
-	let changeShowingState: (() => void) | null;
-
-	let autoHidingTimer;
-
-	const open = () => {
-		close();
-		if (!isHovering) return;
-		if (elRef.value == null) return;
-		const el = elRef.value instanceof Element ? elRef.value : elRef.value.$el;
-		if (!window.document.body.contains(el)) return; // openしようとしたときに既に元要素がDOMから消えている場合があるため
-
-		const showing = ref(true);
-		onShow(showing);
-		changeShowingState = () => {
-			showing.value = false;
-		};
-
-		autoHidingTimer = window.setInterval(() => {
-			if (elRef.value == null || !window.document.body.contains(elRef.value instanceof Element ? elRef.value : elRef.value.$el)) {
-				if (!isHovering) return;
-				isHovering = false;
-				window.clearTimeout(timeoutId);
-				close();
-				window.clearInterval(autoHidingTimer);
-			}
-		}, 1000);
-	};
-
-	const close = () => {
-		if (changeShowingState != null) {
-			changeShowingState();
-			changeShowingState = null;
-		}
-	};
-
-	const onMouseover = () => {
-		if (isHovering) return;
-		if (shouldIgnoreMouseover) return;
-		isHovering = true;
-		timeoutId = window.setTimeout(open, delay);
-	};
-
-	const onMouseleave = () => {
-		if (!isHovering) return;
-		isHovering = false;
-		window.clearTimeout(timeoutId);
-		window.clearInterval(autoHidingTimer);
-		close();
-	};
-
-	const onTouchstart = () => {
-		shouldIgnoreMouseover = true;
-		if (isHovering) return;
-		isHovering = true;
-		timeoutId = window.setTimeout(open, delay);
-	};
-
-	const onTouchend = () => {
-		if (!isHovering) return;
-		isHovering = false;
-		window.clearTimeout(timeoutId);
-		window.clearInterval(autoHidingTimer);
-		close();
-	};
-
-	const stop = watch(elRef, () => {
-		if (elRef.value) {
-			stop();
-			const el = elRef.value instanceof Element ? elRef.value : elRef.value.$el;
-			el.addEventListener('mouseover', onMouseover, { passive: true });
-			el.addEventListener('mouseleave', onMouseleave, { passive: true });
-			el.addEventListener('touchstart', onTouchstart, { passive: true });
-			el.addEventListener('touchend', onTouchend, { passive: true });
-			el.addEventListener('click', close, { passive: true });
-		}
-	}, {
-		immediate: true,
-		flush: 'post',
-	});
-
-	onUnmounted(() => {
-		close();
-	});
-}