From 6015254e59ba0526efbfa139c89546458663ccbd Mon Sep 17 00:00:00 2001
From: syuilo <4439005+syuilo@users.noreply.github.com>
Date: Thu, 20 Mar 2025 19:00:09 +0900
Subject: [PATCH] lint fixes

---
 packages/frontend/.storybook/fake-utils.ts    |  2 +-
 packages/frontend/.storybook/preview.ts       |  6 ++--
 packages/frontend/src/boot/common.ts          | 30 +++++++++----------
 packages/frontend/src/boot/main-boot.ts       |  6 ++--
 .../frontend/src/components/MkAnalogClock.vue |  2 +-
 .../src/components/MkAutocomplete.vue         |  4 +--
 packages/frontend/src/components/MkButton.vue |  2 +-
 .../frontend/src/components/MkCaptcha.vue     |  6 ++--
 .../frontend/src/components/MkContextMenu.vue |  4 +--
 .../src/components/MkCropperDialog.vue        |  2 +-
 packages/frontend/src/components/MkFolder.vue |  2 +-
 .../src/components/MkImgWithBlurhash.vue      |  4 +--
 .../src/components/MkInstanceStats.vue        |  2 +-
 .../frontend/src/components/MkMediaAudio.vue  |  2 +-
 .../frontend/src/components/MkMediaList.vue   |  6 ++--
 .../frontend/src/components/MkMediaVideo.vue  |  8 ++---
 packages/frontend/src/components/MkMenu.vue   | 16 +++++-----
 .../frontend/src/components/MkMiniChart.vue   |  2 +-
 .../src/components/MkNotifications.vue        |  2 +-
 .../frontend/src/components/MkPagination.vue  |  2 +-
 packages/frontend/src/components/MkRange.vue  |  8 ++---
 .../components/MkReactionsViewer.reaction.vue |  2 +-
 .../src/components/MkRetentionLineChart.vue   |  2 +-
 .../frontend/src/components/MkTagCloud.vue    |  4 +--
 .../MkVisitorDashboard.ActiveUsersChart.vue   |  2 +-
 packages/frontend/src/components/MkWindow.vue |  2 +-
 .../components/global/MkPageHeader.tabs.vue   |  2 +-
 .../src/components/global/MkPageHeader.vue    |  4 +--
 .../src/components/global/RouterView.vue      |  6 ++--
 .../src/components/global/SearchMarker.vue    |  2 +-
 packages/frontend/src/directives/hotkey.ts    |  4 +--
 packages/frontend/src/directives/panel.ts     |  2 +-
 packages/frontend/src/directives/tooltip.ts   |  2 +-
 .../frontend/src/directives/user-preview.ts   |  4 +--
 packages/frontend/src/instance.ts             |  2 +-
 packages/frontend/src/os.ts                   |  4 +--
 .../frontend/src/pages/admin/_header_.vue     |  2 +-
 .../frontend/src/pages/admin/overview.pie.vue |  2 +-
 packages/frontend/src/pages/auth.form.vue     |  2 +-
 .../src/pages/drop-and-fusion.game.vue        |  2 +-
 packages/frontend/src/pages/oauth.vue         | 18 +++++------
 .../src/pages/settings/2fa.qrdialog.vue       |  2 +-
 packages/frontend/src/preferences.ts          |  6 ++--
 packages/frontend/src/preferences/utility.ts  |  4 +--
 packages/frontend/src/server-context.ts       |  2 +-
 packages/frontend/src/stream.ts               |  6 ++--
 packages/frontend/src/theme.ts                | 12 ++++----
 packages/frontend/src/ui/_common_/common.vue  |  2 +-
 packages/frontend/src/ui/_common_/navbar.vue  |  4 +--
 packages/frontend/src/ui/classic.vue          |  6 ++--
 packages/frontend/src/ui/deck.vue             |  4 +--
 packages/frontend/src/ui/minimum.vue          |  4 +--
 packages/frontend/src/ui/universal.vue        | 12 ++++----
 packages/frontend/src/ui/visitor.vue          |  4 +--
 packages/frontend/src/ui/zen.vue              |  4 +--
 packages/frontend/src/use/use-note-capture.ts |  2 +-
 packages/frontend/src/use/use-tooltip.ts      |  4 +--
 packages/frontend/src/utility/focus-trap.ts   |  4 +--
 packages/frontend/src/utility/focus.ts        |  4 +--
 packages/frontend/src/utility/fullscreen.ts   |  4 +--
 packages/frontend/src/utility/hotkey.ts       |  6 ++--
 packages/frontend/src/utility/init-chart.ts   |  2 +-
 packages/frontend/src/utility/physics.ts      |  2 +-
 packages/frontend/src/utility/select-file.ts  |  2 +-
 .../frontend/src/utility/snowfall-effect.ts   |  6 ++--
 packages/frontend/src/utility/sound.ts        |  4 +--
 .../frontend/src/utility/sticky-sidebar.ts    |  2 +-
 .../src/utility/upload/isWebpSupported.ts     |  2 +-
 packages/frontend/src/widgets/WidgetRss.vue   |  2 +-
 .../frontend/src/widgets/WidgetRssTicker.vue  |  2 +-
 packages/frontend/test/scroll.test.ts         | 12 ++++----
 71 files changed, 160 insertions(+), 160 deletions(-)

diff --git a/packages/frontend/.storybook/fake-utils.ts b/packages/frontend/.storybook/fake-utils.ts
index c777cbbe72..44e2263ca0 100644
--- a/packages/frontend/.storybook/fake-utils.ts
+++ b/packages/frontend/.storybook/fake-utils.ts
@@ -131,7 +131,7 @@ export function imageDataUrl(options?: {
 		alpha?: number,
 	}
 }, seed?: string): string {
-	const canvas = document.createElement('canvas');
+	const canvas = window.document.createElement('canvas');
 	canvas.width = options?.size?.width ?? 100;
 	canvas.height = options?.size?.height ?? 100;
 
diff --git a/packages/frontend/.storybook/preview.ts b/packages/frontend/.storybook/preview.ts
index 3f6bfb62ff..269bc4fb9a 100644
--- a/packages/frontend/.storybook/preview.ts
+++ b/packages/frontend/.storybook/preview.ts
@@ -23,9 +23,9 @@ let misskeyOS = null;
 
 function loadTheme(applyTheme: typeof import('../src/theme')['applyTheme']) {
 	unobserve();
-	const theme = themes[document.documentElement.dataset.misskeyTheme];
+	const theme = themes[window.document.documentElement.dataset.misskeyTheme];
 	if (theme) {
-		applyTheme(themes[document.documentElement.dataset.misskeyTheme]);
+		applyTheme(themes[window.document.documentElement.dataset.misskeyTheme]);
 	} else {
 		applyTheme(themes['l-light']);
 	}
@@ -42,7 +42,7 @@ function loadTheme(applyTheme: typeof import('../src/theme')['applyTheme']) {
 			}
 		}
 	});
-	observer.observe(document.documentElement, {
+	observer.observe(window.document.documentElement, {
 		attributes: true,
 		attributeFilter: ['data-misskey-theme'],
 	});
diff --git a/packages/frontend/src/boot/common.ts b/packages/frontend/src/boot/common.ts
index 75b74b41f8..9a505ca9f8 100644
--- a/packages/frontend/src/boot/common.ts
+++ b/packages/frontend/src/boot/common.ts
@@ -95,7 +95,7 @@ export async function common(createVue: () => App<Element>) {
 	//#endregion
 
 	// タッチデバイスでCSSの:hoverを機能させる
-	document.addEventListener('touchend', () => {}, { passive: true });
+	window.document.addEventListener('touchend', () => {}, { passive: true });
 
 	// URLに#pswpを含む場合は取り除く
 	if (window.location.hash === '#pswp') {
@@ -110,13 +110,13 @@ export async function common(createVue: () => App<Element>) {
 
 	// If mobile, insert the viewport meta tag
 	if (['smartphone', 'tablet'].includes(deviceKind)) {
-		const viewport = document.getElementsByName('viewport').item(0);
+		const viewport = window.document.getElementsByName('viewport').item(0);
 		viewport.setAttribute('content',
 			`${viewport.getAttribute('content')}, minimum-scale=1, maximum-scale=1, user-scalable=no, viewport-fit=cover`);
 	}
 
 	//#region Set lang attr
-	const html = document.documentElement;
+	const html = window.document.documentElement;
 	html.setAttribute('lang', lang);
 	//#endregion
 
@@ -155,7 +155,7 @@ export async function common(createVue: () => App<Element>) {
 		);
 	}, { immediate: miLocalStorage.getItem('theme') == null });
 
-	document.documentElement.dataset.colorScheme = store.s.darkMode ? 'dark' : 'light';
+	window.document.documentElement.dataset.colorScheme = store.s.darkMode ? 'dark' : 'light';
 
 	const darkTheme = prefer.model('darkTheme');
 	const lightTheme = prefer.model('lightTheme');
@@ -201,20 +201,20 @@ export async function common(createVue: () => App<Element>) {
 	}, { immediate: true });
 
 	watch(prefer.r.useBlurEffectForModal, v => {
-		document.documentElement.style.setProperty('--MI-modalBgFilter', v ? 'blur(4px)' : 'none');
+		window.document.documentElement.style.setProperty('--MI-modalBgFilter', v ? 'blur(4px)' : 'none');
 	}, { immediate: true });
 
 	watch(prefer.r.useBlurEffect, v => {
 		if (v) {
-			document.documentElement.style.removeProperty('--MI-blur');
+			window.document.documentElement.style.removeProperty('--MI-blur');
 		} else {
-			document.documentElement.style.setProperty('--MI-blur', 'none');
+			window.document.documentElement.style.setProperty('--MI-blur', 'none');
 		}
 	}, { immediate: true });
 
 	// Keep screen on
-	const onVisibilityChange = () => document.addEventListener('visibilitychange', () => {
-		if (document.visibilityState === 'visible') {
+	const onVisibilityChange = () => window.document.addEventListener('visibilitychange', () => {
+		if (window.document.visibilityState === 'visible') {
 			navigator.wakeLock.request('screen');
 		}
 	});
@@ -224,7 +224,7 @@ export async function common(createVue: () => App<Element>) {
 			.catch(() => {
 				// On WebKit-based browsers, user activation is required to send wake lock request
 				// https://webkit.org/blog/13862/the-user-activation-api/
-				document.addEventListener(
+				window.document.addEventListener(
 					'click',
 					() => navigator.wakeLock.request('screen').then(onVisibilityChange),
 					{ once: true },
@@ -233,7 +233,7 @@ export async function common(createVue: () => App<Element>) {
 	}
 
 	if (prefer.s.makeEveryTextElementsSelectable) {
-		document.documentElement.classList.add('forceSelectableAll');
+		window.document.documentElement.classList.add('forceSelectableAll');
 	}
 
 	//#region Fetch user
@@ -278,16 +278,16 @@ export async function common(createVue: () => App<Element>) {
 	const rootEl = ((): HTMLElement => {
 		const MISSKEY_MOUNT_DIV_ID = 'misskey_app';
 
-		const currentRoot = document.getElementById(MISSKEY_MOUNT_DIV_ID);
+		const currentRoot = window.document.getElementById(MISSKEY_MOUNT_DIV_ID);
 
 		if (currentRoot) {
 			console.warn('multiple import detected');
 			return currentRoot;
 		}
 
-		const root = document.createElement('div');
+		const root = window.document.createElement('div');
 		root.id = MISSKEY_MOUNT_DIV_ID;
-		document.body.appendChild(root);
+		window.document.body.appendChild(root);
 		return root;
 	})();
 
@@ -330,7 +330,7 @@ export async function common(createVue: () => App<Element>) {
 }
 
 function removeSplash() {
-	const splash = document.getElementById('splash');
+	const splash = window.document.getElementById('splash');
 	if (splash) {
 		splash.style.opacity = '0';
 		splash.style.pointerEvents = 'none';
diff --git a/packages/frontend/src/boot/main-boot.ts b/packages/frontend/src/boot/main-boot.ts
index f7360a7340..134490e317 100644
--- a/packages/frontend/src/boot/main-boot.ts
+++ b/packages/frontend/src/boot/main-boot.ts
@@ -398,7 +398,7 @@ export async function mainBoot() {
 			let lastVisibilityChangedAt = Date.now();
 
 			function claimPlainLucky() {
-				if (document.visibilityState !== 'visible') {
+				if (window.document.visibilityState !== 'visible') {
 					if (justPlainLuckyTimer != null) window.clearTimeout(justPlainLuckyTimer);
 					return;
 				}
@@ -413,7 +413,7 @@ export async function mainBoot() {
 			window.addEventListener('visibilitychange', () => {
 				const now = Date.now();
 
-				if (document.visibilityState === 'visible') {
+				if (window.document.visibilityState === 'visible') {
 					// タブを高速で切り替えたら取得処理が何度も走るのを防ぐ
 					if ((now - lastVisibilityChangedAt) < 1000 * 10) {
 						justPlainLuckyTimer = window.setTimeout(claimPlainLucky, 1000 * 10);
@@ -554,7 +554,7 @@ export async function mainBoot() {
 			mainRouter.push('/search');
 		},
 	} as const satisfies Keymap;
-	document.addEventListener('keydown', makeHotkey(keymap), { passive: false });
+	window.document.addEventListener('keydown', makeHotkey(keymap), { passive: false });
 
 	initializeSw();
 }
diff --git a/packages/frontend/src/components/MkAnalogClock.vue b/packages/frontend/src/components/MkAnalogClock.vue
index b39bca5b27..eac1ea9534 100644
--- a/packages/frontend/src/components/MkAnalogClock.vue
+++ b/packages/frontend/src/components/MkAnalogClock.vue
@@ -192,7 +192,7 @@ function tick() {
 tick();
 
 function calcColors() {
-	const computedStyle = getComputedStyle(document.documentElement);
+	const computedStyle = getComputedStyle(window.document.documentElement);
 	const dark = tinycolor(computedStyle.getPropertyValue('--MI_THEME-bg')).isDark();
 	const accent = tinycolor(computedStyle.getPropertyValue('--MI_THEME-accent')).toHexString();
 	majorGraduationColor.value = dark ? 'rgba(255, 255, 255, 0.3)' : 'rgba(0, 0, 0, 0.3)';
diff --git a/packages/frontend/src/components/MkAutocomplete.vue b/packages/frontend/src/components/MkAutocomplete.vue
index 5b747a2a1a..03cf107231 100644
--- a/packages/frontend/src/components/MkAutocomplete.vue
+++ b/packages/frontend/src/components/MkAutocomplete.vue
@@ -359,7 +359,7 @@ onMounted(() => {
 
 	props.textarea.addEventListener('keydown', onKeydown);
 
-	document.body.addEventListener('mousedown', onMousedown);
+	window.document.body.addEventListener('mousedown', onMousedown);
 
 	nextTick(() => {
 		exec();
@@ -375,7 +375,7 @@ onMounted(() => {
 onBeforeUnmount(() => {
 	props.textarea.removeEventListener('keydown', onKeydown);
 
-	document.body.removeEventListener('mousedown', onMousedown);
+	window.document.body.removeEventListener('mousedown', onMousedown);
 });
 </script>
 
diff --git a/packages/frontend/src/components/MkButton.vue b/packages/frontend/src/components/MkButton.vue
index c81edc2a73..5e89dfba12 100644
--- a/packages/frontend/src/components/MkButton.vue
+++ b/packages/frontend/src/components/MkButton.vue
@@ -92,7 +92,7 @@ function onMousedown(evt: MouseEvent): void {
 	const target = evt.target! as HTMLElement;
 	const rect = target.getBoundingClientRect();
 
-	const ripple = document.createElement('div');
+	const ripple = window.document.createElement('div');
 	ripple.classList.add(ripples.value!.dataset.childrenClass!);
 	ripple.style.top = (evt.clientY - rect.top - 1).toString() + 'px';
 	ripple.style.left = (evt.clientX - rect.left - 1).toString() + 'px';
diff --git a/packages/frontend/src/components/MkCaptcha.vue b/packages/frontend/src/components/MkCaptcha.vue
index e4f953bda8..30940a34a9 100644
--- a/packages/frontend/src/components/MkCaptcha.vue
+++ b/packages/frontend/src/components/MkCaptcha.vue
@@ -112,7 +112,7 @@ watch(() => [props.instanceUrl, props.sitekey, props.secretKey], async () => {
 if (loaded || props.provider === 'mcaptcha' || props.provider === 'testcaptcha') {
 	available.value = true;
 } else if (src.value !== null) {
-	(document.getElementById(scriptId.value) ?? document.head.appendChild(Object.assign(document.createElement('script'), {
+	(window.document.getElementById(scriptId.value) ?? window.document.head.appendChild(Object.assign(window.document.createElement('script'), {
 		async: true,
 		id: scriptId.value,
 		src: src.value,
@@ -149,7 +149,7 @@ async function requestRender() {
 	if (captcha.value.render && captchaEl.value instanceof Element && props.sitekey) {
 		// reCAPTCHAのレンダリング重複判定を回避するため、captchaEl配下に仮のdivを用意する.
 		// （同じdivに対して複数回renderを呼び出すとreCAPTCHAはエラーを返すので）
-		const elem = document.createElement('div');
+		const elem = window.document.createElement('div');
 		captchaEl.value.appendChild(elem);
 
 		captchaWidgetId.value = captcha.value.render(elem, {
@@ -174,7 +174,7 @@ async function requestRender() {
 
 function clearWidget() {
 	if (props.provider === 'mcaptcha') {
-		const container = document.getElementById('mcaptcha__widget-container');
+		const container = window.document.getElementById('mcaptcha__widget-container');
 		if (container) {
 			container.innerHTML = '';
 		}
diff --git a/packages/frontend/src/components/MkContextMenu.vue b/packages/frontend/src/components/MkContextMenu.vue
index e47dba4bae..9c6397a72c 100644
--- a/packages/frontend/src/components/MkContextMenu.vue
+++ b/packages/frontend/src/components/MkContextMenu.vue
@@ -68,11 +68,11 @@ onMounted(() => {
 		rootEl.value.style.left = `${left}px`;
 	}
 
-	document.body.addEventListener('mousedown', onMousedown);
+	window.document.body.addEventListener('mousedown', onMousedown);
 });
 
 onBeforeUnmount(() => {
-	document.body.removeEventListener('mousedown', onMousedown);
+	window.document.body.removeEventListener('mousedown', onMousedown);
 });
 
 function onMousedown(evt: Event) {
diff --git a/packages/frontend/src/components/MkCropperDialog.vue b/packages/frontend/src/components/MkCropperDialog.vue
index bd2e6a9cbc..ba21394cbc 100644
--- a/packages/frontend/src/components/MkCropperDialog.vue
+++ b/packages/frontend/src/components/MkCropperDialog.vue
@@ -122,7 +122,7 @@ onMounted(() => {
 	cropper = new Cropper(imgEl.value!, {
 	});
 
-	const computedStyle = getComputedStyle(document.documentElement);
+	const computedStyle = getComputedStyle(window.document.documentElement);
 
 	const selection = cropper.getCropperSelection()!;
 	selection.themeColor = tinycolor(computedStyle.getPropertyValue('--MI_THEME-accent')).toHexString();
diff --git a/packages/frontend/src/components/MkFolder.vue b/packages/frontend/src/components/MkFolder.vue
index b13972f66d..afa09e3125 100644
--- a/packages/frontend/src/components/MkFolder.vue
+++ b/packages/frontend/src/components/MkFolder.vue
@@ -116,7 +116,7 @@ function toggle() {
 }
 
 onMounted(() => {
-	const computedStyle = getComputedStyle(document.documentElement);
+	const computedStyle = getComputedStyle(window.document.documentElement);
 	const parentBg = getBgColor(rootEl.value?.parentElement) ?? 'transparent';
 	const myBg = computedStyle.getPropertyValue('--MI_THEME-panel');
 	bgSame.value = parentBg === myBg;
diff --git a/packages/frontend/src/components/MkImgWithBlurhash.vue b/packages/frontend/src/components/MkImgWithBlurhash.vue
index 420e5e392f..e3a0a371b4 100644
--- a/packages/frontend/src/components/MkImgWithBlurhash.vue
+++ b/packages/frontend/src/components/MkImgWithBlurhash.vue
@@ -55,7 +55,7 @@ import { extractAvgColorFromBlurhash } from '@@/js/extract-avg-color-from-blurha
 const canvasPromise = new Promise<WorkerMultiDispatch | HTMLCanvasElement>(resolve => {
 	// テスト環境で Web Worker インスタンスは作成できない
 	if (import.meta.env.MODE === 'test') {
-		const canvas = document.createElement('canvas');
+		const canvas = window.document.createElement('canvas');
 		canvas.width = 64;
 		canvas.height = 64;
 		resolve(canvas);
@@ -70,7 +70,7 @@ const canvasPromise = new Promise<WorkerMultiDispatch | HTMLCanvasElement>(resol
 			);
 			resolve(workers);
 		} else {
-			const canvas = document.createElement('canvas');
+			const canvas = window.document.createElement('canvas');
 			canvas.width = 64;
 			canvas.height = 64;
 			resolve(canvas);
diff --git a/packages/frontend/src/components/MkInstanceStats.vue b/packages/frontend/src/components/MkInstanceStats.vue
index 76bec9bc66..90391005bc 100644
--- a/packages/frontend/src/components/MkInstanceStats.vue
+++ b/packages/frontend/src/components/MkInstanceStats.vue
@@ -126,7 +126,7 @@ function createDoughnut(chartEl, tooltip, data) {
 			labels: data.map(x => x.name),
 			datasets: [{
 				backgroundColor: data.map(x => x.color),
-				borderColor: getComputedStyle(document.documentElement).getPropertyValue('--MI_THEME-panel'),
+				borderColor: getComputedStyle(window.document.documentElement).getPropertyValue('--MI_THEME-panel'),
 				borderWidth: 2,
 				hoverOffset: 0,
 				data: data.map(x => x.value),
diff --git a/packages/frontend/src/components/MkMediaAudio.vue b/packages/frontend/src/components/MkMediaAudio.vue
index db6deb161a..b7052ad918 100644
--- a/packages/frontend/src/components/MkMediaAudio.vue
+++ b/packages/frontend/src/components/MkMediaAudio.vue
@@ -148,7 +148,7 @@ const keymap = {
 // PlayerElもしくはその子要素にフォーカスがあるかどうか
 function hasFocus() {
 	if (!playerEl.value) return false;
-	return playerEl.value === document.activeElement || playerEl.value.contains(document.activeElement);
+	return playerEl.value === window.document.activeElement || playerEl.value.contains(window.document.activeElement);
 }
 
 const playerEl = useTemplateRef('playerEl');
diff --git a/packages/frontend/src/components/MkMediaList.vue b/packages/frontend/src/components/MkMediaList.vue
index 44a9d14a46..ae15776041 100644
--- a/packages/frontend/src/components/MkMediaList.vue
+++ b/packages/frontend/src/components/MkMediaList.vue
@@ -48,7 +48,7 @@ const props = defineProps<{
 
 const gallery = useTemplateRef('gallery');
 const pswpZIndex = os.claimZIndex('middle');
-document.documentElement.style.setProperty('--mk-pswp-root-z-index', pswpZIndex.toString());
+window.document.documentElement.style.setProperty('--mk-pswp-root-z-index', pswpZIndex.toString());
 const count = computed(() => props.mediaList.filter(media => previewable(media)).length);
 let lightbox: PhotoSwipeLightbox | null = null;
 
@@ -166,7 +166,7 @@ onMounted(() => {
 			className: 'pswp__alt-text-container',
 			appendTo: 'wrapper',
 			onInit: (el, pswp) => {
-				const textBox = document.createElement('p');
+				const textBox = window.document.createElement('p');
 				textBox.className = 'pswp__alt-text _acrylic';
 				el.appendChild(textBox);
 
@@ -178,7 +178,7 @@ onMounted(() => {
 	});
 
 	lightbox.on('afterInit', () => {
-		activeEl = document.activeElement instanceof HTMLElement ? document.activeElement : null;
+		activeEl = window.document.activeElement instanceof HTMLElement ? window.document.activeElement : null;
 		focusParent(activeEl, true, true);
 		lightbox?.pswp?.element?.focus({
 			preventScroll: true,
diff --git a/packages/frontend/src/components/MkMediaVideo.vue b/packages/frontend/src/components/MkMediaVideo.vue
index 5475e703a5..629679a971 100644
--- a/packages/frontend/src/components/MkMediaVideo.vue
+++ b/packages/frontend/src/components/MkMediaVideo.vue
@@ -171,7 +171,7 @@ const keymap = {
 // PlayerElもしくはその子要素にフォーカスがあるかどうか
 function hasFocus() {
 	if (!playerEl.value) return false;
-	return playerEl.value === document.activeElement || playerEl.value.contains(document.activeElement);
+	return playerEl.value === window.document.activeElement || playerEl.value.contains(window.document.activeElement);
 }
 
 // eslint-disable-next-line vue/no-setup-props-reactivity-loss
@@ -216,7 +216,7 @@ function showMenu(ev: MouseEvent) {
 				'2.0x': 2,
 			},
 		},
-		...(document.pictureInPictureEnabled ? [{
+		...(window.document.pictureInPictureEnabled ? [{
 			text: i18n.ts._mediaControls.pip,
 			icon: 'ti ti-picture-in-picture',
 			action: togglePictureInPicture,
@@ -384,8 +384,8 @@ function toggleFullscreen() {
 
 function togglePictureInPicture() {
 	if (videoEl.value) {
-		if (document.pictureInPictureElement) {
-			document.exitPictureInPicture();
+		if (window.document.pictureInPictureElement) {
+			window.document.exitPictureInPicture();
 		} else {
 			videoEl.value.requestPictureInPicture();
 		}
diff --git a/packages/frontend/src/components/MkMenu.vue b/packages/frontend/src/components/MkMenu.vue
index e380d0bc37..a84bd9b256 100644
--- a/packages/frontend/src/components/MkMenu.vue
+++ b/packages/frontend/src/components/MkMenu.vue
@@ -358,10 +358,10 @@ function switchItem(item: MenuSwitch & { ref: any }) {
 
 function focusUp() {
 	if (disposed) return;
-	if (!itemsEl.value?.contains(document.activeElement)) return;
+	if (!itemsEl.value?.contains(window.document.activeElement)) return;
 
 	const focusableElements = Array.from(itemsEl.value.children).filter(isFocusable);
-	const activeIndex = focusableElements.findIndex(el => el === document.activeElement);
+	const activeIndex = focusableElements.findIndex(el => el === window.document.activeElement);
 	const targetIndex = (activeIndex !== -1 && activeIndex !== 0) ? (activeIndex - 1) : (focusableElements.length - 1);
 	const targetElement = focusableElements.at(targetIndex) ?? itemsEl.value;
 
@@ -370,10 +370,10 @@ function focusUp() {
 
 function focusDown() {
 	if (disposed) return;
-	if (!itemsEl.value?.contains(document.activeElement)) return;
+	if (!itemsEl.value?.contains(window.document.activeElement)) return;
 
 	const focusableElements = Array.from(itemsEl.value.children).filter(isFocusable);
-	const activeIndex = focusableElements.findIndex(el => el === document.activeElement);
+	const activeIndex = focusableElements.findIndex(el => el === window.document.activeElement);
 	const targetIndex = (activeIndex !== -1 && activeIndex !== (focusableElements.length - 1)) ? (activeIndex + 1) : 0;
 	const targetElement = focusableElements.at(targetIndex) ?? itemsEl.value;
 
@@ -400,9 +400,9 @@ const onGlobalMousedown = (ev: MouseEvent) => {
 
 const setupHandlers = () => {
 	if (!isNestingMenu) {
-		document.addEventListener('focusin', onGlobalFocusin, { passive: true });
+		window.document.addEventListener('focusin', onGlobalFocusin, { passive: true });
 	}
-	document.addEventListener('mousedown', onGlobalMousedown, { passive: true });
+	window.document.addEventListener('mousedown', onGlobalMousedown, { passive: true });
 };
 
 let disposed = false;
@@ -410,9 +410,9 @@ let disposed = false;
 const disposeHandlers = () => {
 	disposed = true;
 	if (!isNestingMenu) {
-		document.removeEventListener('focusin', onGlobalFocusin);
+		window.document.removeEventListener('focusin', onGlobalFocusin);
 	}
-	document.removeEventListener('mousedown', onGlobalMousedown);
+	window.document.removeEventListener('mousedown', onGlobalMousedown);
 };
 
 onMounted(() => {
diff --git a/packages/frontend/src/components/MkMiniChart.vue b/packages/frontend/src/components/MkMiniChart.vue
index 7ea585ecc2..98bd471438 100644
--- a/packages/frontend/src/components/MkMiniChart.vue
+++ b/packages/frontend/src/components/MkMiniChart.vue
@@ -48,7 +48,7 @@ const polygonPoints = ref('');
 const headX = ref<number | null>(null);
 const headY = ref<number | null>(null);
 const clock = ref<number | null>(null);
-const accent = tinycolor(getComputedStyle(document.documentElement).getPropertyValue('--MI_THEME-accent'));
+const accent = tinycolor(getComputedStyle(window.document.documentElement).getPropertyValue('--MI_THEME-accent'));
 const color = accent.toRgbString();
 
 function draw(): void {
diff --git a/packages/frontend/src/components/MkNotifications.vue b/packages/frontend/src/components/MkNotifications.vue
index 08fc846327..21f1967bfa 100644
--- a/packages/frontend/src/components/MkNotifications.vue
+++ b/packages/frontend/src/components/MkNotifications.vue
@@ -59,7 +59,7 @@ const pagination = computed(() => prefer.r.useGroupedNotifications.value ? {
 
 function onNotification(notification) {
 	const isMuted = props.excludeTypes ? props.excludeTypes.includes(notification.type) : false;
-	if (isMuted || document.visibilityState === 'visible') {
+	if (isMuted || window.document.visibilityState === 'visible') {
 		useStream().send('readNotification');
 	}
 
diff --git a/packages/frontend/src/components/MkPagination.vue b/packages/frontend/src/components/MkPagination.vue
index 6a1a91a9f4..ab8bda403b 100644
--- a/packages/frontend/src/components/MkPagination.vue
+++ b/packages/frontend/src/components/MkPagination.vue
@@ -142,7 +142,7 @@ const {
 } = prefer.r;
 
 const contentEl = computed(() => props.pagination.pageEl ?? rootEl.value);
-const scrollableElement = computed(() => contentEl.value ? getScrollContainer(contentEl.value) : document.body);
+const scrollableElement = computed(() => contentEl.value ? getScrollContainer(contentEl.value) : window.document.body);
 
 const visibility = useDocumentVisibility();
 
diff --git a/packages/frontend/src/components/MkRange.vue b/packages/frontend/src/components/MkRange.vue
index 118dbbe15a..734b624541 100644
--- a/packages/frontend/src/components/MkRange.vue
+++ b/packages/frontend/src/components/MkRange.vue
@@ -151,9 +151,9 @@ function onMousedown(ev: MouseEvent | TouchEvent) {
 		closed: () => dispose(),
 	});
 
-	const style = document.createElement('style');
-	style.appendChild(document.createTextNode('* { cursor: grabbing !important; } body * { pointer-events: none !important; }'));
-	document.head.appendChild(style);
+	const style = window.document.createElement('style');
+	style.appendChild(window.document.createTextNode('* { cursor: grabbing !important; } body * { pointer-events: none !important; }'));
+	window.document.head.appendChild(style);
 
 	const thumbWidth = getThumbWidth();
 
@@ -172,7 +172,7 @@ function onMousedown(ev: MouseEvent | TouchEvent) {
 	let beforeValue = finalValue.value;
 
 	const onMouseup = () => {
-		document.head.removeChild(style);
+		window.document.head.removeChild(style);
 		tooltipForDragShowing.value = false;
 		window.removeEventListener('mousemove', onDrag);
 		window.removeEventListener('touchmove', onDrag);
diff --git a/packages/frontend/src/components/MkReactionsViewer.reaction.vue b/packages/frontend/src/components/MkReactionsViewer.reaction.vue
index 590b0f6f19..9d941a949a 100644
--- a/packages/frontend/src/components/MkReactionsViewer.reaction.vue
+++ b/packages/frontend/src/components/MkReactionsViewer.reaction.vue
@@ -136,7 +136,7 @@ async function menu(ev) {
 }
 
 function anime() {
-	if (document.hidden || !prefer.s.animation || buttonEl.value == null) return;
+	if (window.document.hidden || !prefer.s.animation || buttonEl.value == null) return;
 
 	const rect = buttonEl.value.getBoundingClientRect();
 	const x = rect.left + 16;
diff --git a/packages/frontend/src/components/MkRetentionLineChart.vue b/packages/frontend/src/components/MkRetentionLineChart.vue
index 60b3f17b14..ba66ffecc0 100644
--- a/packages/frontend/src/components/MkRetentionLineChart.vue
+++ b/packages/frontend/src/components/MkRetentionLineChart.vue
@@ -44,7 +44,7 @@ onMounted(async () => {
 
 	const vLineColor = store.s.darkMode ? 'rgba(255, 255, 255, 0.2)' : 'rgba(0, 0, 0, 0.2)';
 
-	const accent = tinycolor(getComputedStyle(document.documentElement).getPropertyValue('--MI_THEME-accent'));
+	const accent = tinycolor(getComputedStyle(window.document.documentElement).getPropertyValue('--MI_THEME-accent'));
 	const color = accent.toHex();
 
 	if (chartEl.value == null) return;
diff --git a/packages/frontend/src/components/MkTagCloud.vue b/packages/frontend/src/components/MkTagCloud.vue
index 8ad9e14015..9d541c8acb 100644
--- a/packages/frontend/src/components/MkTagCloud.vue
+++ b/packages/frontend/src/components/MkTagCloud.vue
@@ -20,7 +20,7 @@ import tinycolor from 'tinycolor2';
 
 const loaded = !!window.TagCanvas;
 const SAFE_FOR_HTML_ID = 'abcdefghijklmnopqrstuvwxyz';
-const computedStyle = getComputedStyle(document.documentElement);
+const computedStyle = getComputedStyle(window.document.documentElement);
 const idForCanvas = Array.from({ length: 16 }, () => SAFE_FOR_HTML_ID[Math.floor(Math.random() * SAFE_FOR_HTML_ID.length)]).join('');
 const idForTags = Array.from({ length: 16 }, () => SAFE_FOR_HTML_ID[Math.floor(Math.random() * SAFE_FOR_HTML_ID.length)]).join('');
 const available = ref(false);
@@ -57,7 +57,7 @@ onMounted(() => {
 	if (loaded) {
 		available.value = true;
 	} else {
-		document.head.appendChild(Object.assign(document.createElement('script'), {
+		window.document.head.appendChild(Object.assign(window.document.createElement('script'), {
 			async: true,
 			src: '/client-assets/tagcanvas.min.js',
 		})).addEventListener('load', () => available.value = true);
diff --git a/packages/frontend/src/components/MkVisitorDashboard.ActiveUsersChart.vue b/packages/frontend/src/components/MkVisitorDashboard.ActiveUsersChart.vue
index 2c2c515032..79c9e739c4 100644
--- a/packages/frontend/src/components/MkVisitorDashboard.ActiveUsersChart.vue
+++ b/packages/frontend/src/components/MkVisitorDashboard.ActiveUsersChart.vue
@@ -61,7 +61,7 @@ async function renderChart() {
 
 	const vLineColor = store.s.darkMode ? 'rgba(255, 255, 255, 0.2)' : 'rgba(0, 0, 0, 0.2)';
 
-	const computedStyle = getComputedStyle(document.documentElement);
+	const computedStyle = getComputedStyle(window.document.documentElement);
 	const accent = tinycolor(computedStyle.getPropertyValue('--MI_THEME-accent')).toHexString();
 
 	const colorRead = accent;
diff --git a/packages/frontend/src/components/MkWindow.vue b/packages/frontend/src/components/MkWindow.vue
index 98ec448a8e..e5ac791d0b 100644
--- a/packages/frontend/src/components/MkWindow.vue
+++ b/packages/frontend/src/components/MkWindow.vue
@@ -240,7 +240,7 @@ function onHeaderMousedown(evt: MouseEvent | TouchEvent) {
 	const main = rootEl.value;
 	if (main == null) return;
 
-	if (!contains(main, document.activeElement)) main.focus();
+	if (!contains(main, window.document.activeElement)) main.focus();
 
 	const position = main.getBoundingClientRect();
 
diff --git a/packages/frontend/src/components/global/MkPageHeader.tabs.vue b/packages/frontend/src/components/global/MkPageHeader.tabs.vue
index 81adc07f26..358a17d3e8 100644
--- a/packages/frontend/src/components/global/MkPageHeader.tabs.vue
+++ b/packages/frontend/src/components/global/MkPageHeader.tabs.vue
@@ -170,7 +170,7 @@ onMounted(() => {
 
 	if (props.rootEl) {
 		ro2 = new ResizeObserver((entries, observer) => {
-			if (document.body.contains(el.value as HTMLElement)) {
+			if (window.document.body.contains(el.value as HTMLElement)) {
 				nextTick(() => renderTab());
 			}
 		});
diff --git a/packages/frontend/src/components/global/MkPageHeader.vue b/packages/frontend/src/components/global/MkPageHeader.vue
index 59bf80cfca..d5680b8413 100644
--- a/packages/frontend/src/components/global/MkPageHeader.vue
+++ b/packages/frontend/src/components/global/MkPageHeader.vue
@@ -108,7 +108,7 @@ function onTabClick(): void {
 
 const calcBg = () => {
 	const rawBg = 'var(--MI_THEME-bg)';
-	const tinyBg = tinycolor(rawBg.startsWith('var(') ? getComputedStyle(document.documentElement).getPropertyValue(rawBg.slice(4, -1)) : rawBg);
+	const tinyBg = tinycolor(rawBg.startsWith('var(') ? getComputedStyle(window.document.documentElement).getPropertyValue(rawBg.slice(4, -1)) : rawBg);
 	tinyBg.setAlpha(0.85);
 	bg.value = tinyBg.toRgbString();
 };
@@ -122,7 +122,7 @@ onMounted(() => {
 	if (el.value && el.value.parentElement) {
 		narrow.value = el.value.parentElement.offsetWidth < 500;
 		ro = new ResizeObserver((entries, observer) => {
-			if (el.value && el.value.parentElement && document.body.contains(el.value as HTMLElement)) {
+			if (el.value && el.value.parentElement && window.document.body.contains(el.value as HTMLElement)) {
 				narrow.value = el.value.parentElement.offsetWidth < 500;
 			}
 		});
diff --git a/packages/frontend/src/components/global/RouterView.vue b/packages/frontend/src/components/global/RouterView.vue
index 45cb1e3bd5..1c0c35f34e 100644
--- a/packages/frontend/src/components/global/RouterView.vue
+++ b/packages/frontend/src/components/global/RouterView.vue
@@ -48,7 +48,7 @@ onMounted(() => {
 });
 
 // view-transition-newなどの<pt-name-selector>にはcss varが使えず、v-bindできないため直接スタイルを生成
-const viewTransitionStylesTag = document.createElement('style');
+const viewTransitionStylesTag = window.document.createElement('style');
 viewTransitionStylesTag.textContent = `
 @keyframes ${viewId}-old {
 	to { transform: scale(0.95); opacity: 0; }
@@ -89,8 +89,8 @@ router.useListener('change', ({ resolved }) => {
 	}
 
 	// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
-	if (prefer.s.animation && document.startViewTransition) {
-		document.startViewTransition(() => new Promise((res) => {
+	if (prefer.s.animation && window.document.startViewTransition) {
+		window.document.startViewTransition(() => new Promise((res) => {
 			_();
 			nextTick(() => {
 				res();
diff --git a/packages/frontend/src/components/global/SearchMarker.vue b/packages/frontend/src/components/global/SearchMarker.vue
index 66a78cb7fd..061ce3f47d 100644
--- a/packages/frontend/src/components/global/SearchMarker.vue
+++ b/packages/frontend/src/components/global/SearchMarker.vue
@@ -42,7 +42,7 @@ const highlighted = ref(props.markerId === searchMarkerId.value);
 
 function checkChildren() {
 	if (props.children?.includes(searchMarkerId.value)) {
-		const el = document.querySelector(`[data-in-app-search-marker-id="${searchMarkerId.value}"]`);
+		const el = window.document.querySelector(`[data-in-app-search-marker-id="${searchMarkerId.value}"]`);
 		highlighted.value = el == null;
 	}
 }
diff --git a/packages/frontend/src/directives/hotkey.ts b/packages/frontend/src/directives/hotkey.ts
index 75e022e98f..63637ab2ba 100644
--- a/packages/frontend/src/directives/hotkey.ts
+++ b/packages/frontend/src/directives/hotkey.ts
@@ -13,7 +13,7 @@ export default {
 		el._keyHandler = makeHotkey(binding.value);
 
 		if (el._hotkey_global) {
-			document.addEventListener('keydown', el._keyHandler, { passive: false });
+			window.document.addEventListener('keydown', el._keyHandler, { passive: false });
 		} else {
 			el.addEventListener('keydown', el._keyHandler, { passive: false });
 		}
@@ -21,7 +21,7 @@ export default {
 
 	unmounted(el) {
 		if (el._hotkey_global) {
-			document.removeEventListener('keydown', el._keyHandler);
+			window.document.removeEventListener('keydown', el._keyHandler);
 		} else {
 			el.removeEventListener('keydown', el._keyHandler);
 		}
diff --git a/packages/frontend/src/directives/panel.ts b/packages/frontend/src/directives/panel.ts
index 17916fb6d3..0af19e6ca3 100644
--- a/packages/frontend/src/directives/panel.ts
+++ b/packages/frontend/src/directives/panel.ts
@@ -10,7 +10,7 @@ export default {
 	mounted(src, binding, vn) {
 		const parentBg = getBgColor(src.parentElement) ?? 'transparent';
 
-		const myBg = getComputedStyle(document.documentElement).getPropertyValue('--MI_THEME-panel');
+		const myBg = getComputedStyle(window.document.documentElement).getPropertyValue('--MI_THEME-panel');
 
 		if (parentBg === myBg) {
 			src.style.backgroundColor = 'var(--MI_THEME-bg)';
diff --git a/packages/frontend/src/directives/tooltip.ts b/packages/frontend/src/directives/tooltip.ts
index 068186dfa0..750acd0588 100644
--- a/packages/frontend/src/directives/tooltip.ts
+++ b/packages/frontend/src/directives/tooltip.ts
@@ -47,7 +47,7 @@ export default {
 		}
 
 		self.show = () => {
-			if (!document.body.contains(el)) return;
+			if (!window.document.body.contains(el)) return;
 			if (self._close) return;
 			if (self.text == null) return;
 
diff --git a/packages/frontend/src/directives/user-preview.ts b/packages/frontend/src/directives/user-preview.ts
index 43a93a0865..94deea82c7 100644
--- a/packages/frontend/src/directives/user-preview.ts
+++ b/packages/frontend/src/directives/user-preview.ts
@@ -31,7 +31,7 @@ export class UserPreview {
 	}
 
 	private show() {
-		if (!document.body.contains(this.el)) return;
+		if (!window.document.body.contains(this.el)) return;
 		if (this.promise) return;
 
 		const showing = ref(true);
@@ -58,7 +58,7 @@ export class UserPreview {
 		};
 
 		this.checkTimer = window.setInterval(() => {
-			if (!document.body.contains(this.el)) {
+			if (!window.document.body.contains(this.el)) {
 				window.clearTimeout(this.showTimer);
 				window.clearTimeout(this.hideTimer);
 				this.close();
diff --git a/packages/frontend/src/instance.ts b/packages/frontend/src/instance.ts
index c694d49c8a..e75e3dfd34 100644
--- a/packages/frontend/src/instance.ts
+++ b/packages/frontend/src/instance.ts
@@ -12,7 +12,7 @@ import { DEFAULT_INFO_IMAGE_URL, DEFAULT_NOT_FOUND_IMAGE_URL, DEFAULT_SERVER_ERR
 // TODO: 他のタブと永続化されたstateを同期
 
 //#region loader
-const providedMetaEl = document.getElementById('misskey_meta');
+const providedMetaEl = window.document.getElementById('misskey_meta');
 
 let cachedMeta = miLocalStorage.getItem('instance') ? JSON.parse(miLocalStorage.getItem('instance')!) : null;
 let cachedAt = miLocalStorage.getItem('instanceCachedAt') ? parseInt(miLocalStorage.getItem('instanceCachedAt')!) : 0;
diff --git a/packages/frontend/src/os.ts b/packages/frontend/src/os.ts
index eed929432c..7f4f7c5be3 100644
--- a/packages/frontend/src/os.ts
+++ b/packages/frontend/src/os.ts
@@ -675,7 +675,7 @@ export function popupMenu(items: MenuItem[], src?: HTMLElement | EventTarget | n
 		src = null;
 	}
 
-	let returnFocusTo = getHTMLElementOrNull(src) ?? getHTMLElementOrNull(document.activeElement);
+	let returnFocusTo = getHTMLElementOrNull(src) ?? getHTMLElementOrNull(window.document.activeElement);
 	return new Promise(resolve => nextTick(() => {
 		const { dispose } = popup(MkPopupMenu, {
 			items,
@@ -704,7 +704,7 @@ export function contextMenu(items: MenuItem[], ev: MouseEvent): Promise<void> {
 		return Promise.resolve();
 	}
 
-	let returnFocusTo = getHTMLElementOrNull(ev.currentTarget ?? ev.target) ?? getHTMLElementOrNull(document.activeElement);
+	let returnFocusTo = getHTMLElementOrNull(ev.currentTarget ?? ev.target) ?? getHTMLElementOrNull(window.document.activeElement);
 	ev.preventDefault();
 	return new Promise(resolve => nextTick(() => {
 		const { dispose } = popup(MkContextMenu, {
diff --git a/packages/frontend/src/pages/admin/_header_.vue b/packages/frontend/src/pages/admin/_header_.vue
index 819ca2c127..0af56e1b15 100644
--- a/packages/frontend/src/pages/admin/_header_.vue
+++ b/packages/frontend/src/pages/admin/_header_.vue
@@ -120,7 +120,7 @@ function onTabClick(tab: Tab, ev: MouseEvent): void {
 
 const calcBg = () => {
 	const rawBg = pageMetadata.value.bg ?? 'var(--MI_THEME-bg)';
-	const tinyBg = tinycolor(rawBg.startsWith('var(') ? getComputedStyle(document.documentElement).getPropertyValue(rawBg.slice(4, -1)) : rawBg);
+	const tinyBg = tinycolor(rawBg.startsWith('var(') ? getComputedStyle(window.document.documentElement).getPropertyValue(rawBg.slice(4, -1)) : rawBg);
 	tinyBg.setAlpha(0.85);
 	bg.value = tinyBg.toRgbString();
 };
diff --git a/packages/frontend/src/pages/admin/overview.pie.vue b/packages/frontend/src/pages/admin/overview.pie.vue
index 32dd981ca9..86c5eff4da 100644
--- a/packages/frontend/src/pages/admin/overview.pie.vue
+++ b/packages/frontend/src/pages/admin/overview.pie.vue
@@ -41,7 +41,7 @@ onMounted(() => {
 			labels: props.data.map(x => x.name),
 			datasets: [{
 				backgroundColor: props.data.map(x => x.color),
-				borderColor: getComputedStyle(document.documentElement).getPropertyValue('--MI_THEME-panel'),
+				borderColor: getComputedStyle(window.document.documentElement).getPropertyValue('--MI_THEME-panel'),
 				borderWidth: 2,
 				hoverOffset: 0,
 				data: props.data.map(x => x.value),
diff --git a/packages/frontend/src/pages/auth.form.vue b/packages/frontend/src/pages/auth.form.vue
index 1917293c06..5b1fd1a386 100644
--- a/packages/frontend/src/pages/auth.form.vue
+++ b/packages/frontend/src/pages/auth.form.vue
@@ -38,7 +38,7 @@ const emit = defineEmits<{
 const app = computed(() => props.session.app);
 
 const name = computed(() => {
-	const el = document.createElement('div');
+	const el = window.document.createElement('div');
 	el.textContent = app.value.name;
 	return el.innerHTML;
 });
diff --git a/packages/frontend/src/pages/drop-and-fusion.game.vue b/packages/frontend/src/pages/drop-and-fusion.game.vue
index 3b1a845f5b..b8b0d6aef6 100644
--- a/packages/frontend/src/pages/drop-and-fusion.game.vue
+++ b/packages/frontend/src/pages/drop-and-fusion.game.vue
@@ -875,7 +875,7 @@ function loadImage(url: string) {
 
 function getGameImageDriveFile() {
 	return new Promise<Misskey.entities.DriveFile | null>(res => {
-		const dcanvas = document.createElement('canvas');
+		const dcanvas = window.document.createElement('canvas');
 		dcanvas.width = game.GAME_WIDTH;
 		dcanvas.height = game.GAME_HEIGHT;
 		const ctx = dcanvas.getContext('2d');
diff --git a/packages/frontend/src/pages/oauth.vue b/packages/frontend/src/pages/oauth.vue
index 49664c8b08..04bb1661cf 100644
--- a/packages/frontend/src/pages/oauth.vue
+++ b/packages/frontend/src/pages/oauth.vue
@@ -27,42 +27,42 @@ import MkPageWithAnimBg from '@/components/MkPageWithAnimBg.vue';
 import { definePage } from '@/page.js';
 import MkAuthConfirm from '@/components/MkAuthConfirm.vue';
 
-const transactionIdMeta = document.querySelector<HTMLMetaElement>('meta[name="misskey:oauth:transaction-id"]');
+const transactionIdMeta = window.document.querySelector<HTMLMetaElement>('meta[name="misskey:oauth:transaction-id"]');
 if (transactionIdMeta) {
 	transactionIdMeta.remove();
 }
 
-const name = document.querySelector<HTMLMetaElement>('meta[name="misskey:oauth:client-name"]')?.content;
-const logo = document.querySelector<HTMLMetaElement>('meta[name="misskey:oauth:client-logo"]')?.content;
-const permissions = document.querySelector<HTMLMetaElement>('meta[name="misskey:oauth:scope"]')?.content.split(' ').filter((p): p is typeof Misskey.permissions[number] => (Misskey.permissions as readonly string[]).includes(p)) ?? [];
+const name = window.document.querySelector<HTMLMetaElement>('meta[name="misskey:oauth:client-name"]')?.content;
+const logo = window.document.querySelector<HTMLMetaElement>('meta[name="misskey:oauth:client-logo"]')?.content;
+const permissions = window.document.querySelector<HTMLMetaElement>('meta[name="misskey:oauth:scope"]')?.content.split(' ').filter((p): p is typeof Misskey.permissions[number] => (Misskey.permissions as readonly string[]).includes(p)) ?? [];
 
 function doPost(token: string, decision: 'accept' | 'deny') {
-	const form = document.createElement('form');
+	const form = window.document.createElement('form');
 	form.action = '/oauth/decision';
 	form.method = 'post';
 	form.acceptCharset = 'utf-8';
 
-	const loginToken = document.createElement('input');
+	const loginToken = window.document.createElement('input');
 	loginToken.type = 'hidden';
 	loginToken.name = 'login_token';
 	loginToken.value = token;
 	form.appendChild(loginToken);
 
-	const transactionId = document.createElement('input');
+	const transactionId = window.document.createElement('input');
 	transactionId.type = 'hidden';
 	transactionId.name = 'transaction_id';
 	transactionId.value = transactionIdMeta?.content ?? '';
 	form.appendChild(transactionId);
 
 	if (decision === 'deny') {
-		const cancel = document.createElement('input');
+		const cancel = window.document.createElement('input');
 		cancel.type = 'hidden';
 		cancel.name = 'cancel';
 		cancel.value = 'cancel';
 		form.appendChild(cancel);
 	}
 
-	document.body.appendChild(form);
+	window.document.body.appendChild(form);
 	form.submit();
 }
 
diff --git a/packages/frontend/src/pages/settings/2fa.qrdialog.vue b/packages/frontend/src/pages/settings/2fa.qrdialog.vue
index a13f1a7813..03f973a33e 100644
--- a/packages/frontend/src/pages/settings/2fa.qrdialog.vue
+++ b/packages/frontend/src/pages/settings/2fa.qrdialog.vue
@@ -160,7 +160,7 @@ async function tokenDone() {
 function downloadBackupCodes() {
 	if (backupCodes.value !== undefined) {
 		const txtBlob = new Blob([backupCodes.value.join('\n')], { type: 'text/plain' });
-		const dummya = document.createElement('a');
+		const dummya = window.document.createElement('a');
 		dummya.href = URL.createObjectURL(txtBlob);
 		dummya.download = `${$i.username}@${hostname}` + (port !== '' ? `_${port}` : '') + '-2fa-backup-codes.txt';
 		dummya.click();
diff --git a/packages/frontend/src/preferences.ts b/packages/frontend/src/preferences.ts
index 7681333910..73c89e23af 100644
--- a/packages/frontend/src/preferences.ts
+++ b/packages/frontend/src/preferences.ts
@@ -125,8 +125,8 @@ function syncBetweenTabs() {
 
 window.setInterval(syncBetweenTabs, 5000);
 
-document.addEventListener('visibilitychange', () => {
-	if (document.visibilityState === 'visible') {
+window.document.addEventListener('visibilitychange', () => {
+	if (window.document.visibilityState === 'visible') {
 		syncBetweenTabs();
 	}
 });
@@ -136,7 +136,7 @@ let latestBackupAt = 0;
 window.setInterval(() => {
 	if ($i == null) return;
 	if (!store.s.enablePreferencesAutoCloudBackup) return;
-	if (document.visibilityState !== 'visible') return; // 同期されていない古い値がバックアップされるのを防ぐ
+	if (window.document.visibilityState !== 'visible') return; // 同期されていない古い値がバックアップされるのを防ぐ
 	if (prefer.profile.modifiedAt <= latestBackupAt) return;
 
 	cloudBackup().then(() => {
diff --git a/packages/frontend/src/preferences/utility.ts b/packages/frontend/src/preferences/utility.ts
index bf3dfa157f..7229b7348e 100644
--- a/packages/frontend/src/preferences/utility.ts
+++ b/packages/frontend/src/preferences/utility.ts
@@ -106,14 +106,14 @@ async function renameProfile() {
 function exportCurrentProfile() {
 	const p = prefer.profile;
 	const txtBlob = new Blob([JSON.stringify(p)], { type: 'text/plain' });
-	const dummya = document.createElement('a');
+	const dummya = window.document.createElement('a');
 	dummya.href = URL.createObjectURL(txtBlob);
 	dummya.download = `${p.name || p.id}.misskeypreferences`;
 	dummya.click();
 }
 
 function importProfile() {
-	const input = document.createElement('input');
+	const input = window.document.createElement('input');
 	input.type = 'file';
 	input.accept = '.misskeypreferences';
 	input.onchange = async () => {
diff --git a/packages/frontend/src/server-context.ts b/packages/frontend/src/server-context.ts
index e79d3fa314..744bfa4b7b 100644
--- a/packages/frontend/src/server-context.ts
+++ b/packages/frontend/src/server-context.ts
@@ -5,7 +5,7 @@
 
 import * as Misskey from 'misskey-js';
 
-const providedContextEl = document.getElementById('misskey_clientCtx');
+const providedContextEl = window.document.getElementById('misskey_clientCtx');
 
 export type ServerContext = {
 	clip?: Misskey.entities.Clip;
diff --git a/packages/frontend/src/stream.ts b/packages/frontend/src/stream.ts
index c97d7d4071..25544d9d88 100644
--- a/packages/frontend/src/stream.ts
+++ b/packages/frontend/src/stream.ts
@@ -29,10 +29,10 @@ export function useStream(): Misskey.IStream {
 	timeoutHeartBeat = window.setTimeout(heartbeat, HEART_BEAT_INTERVAL);
 
 	// send heartbeat right now when last send time is over HEART_BEAT_INTERVAL
-	document.addEventListener('visibilitychange', () => {
+	window.document.addEventListener('visibilitychange', () => {
 		if (
 			!stream
-			|| document.visibilityState !== 'visible'
+			|| window.document.visibilityState !== 'visible'
 			|| Date.now() - lastHeartbeatCall < HEART_BEAT_INTERVAL
 		) return;
 		heartbeat();
@@ -42,7 +42,7 @@ export function useStream(): Misskey.IStream {
 }
 
 function heartbeat(): void {
-	if (stream != null && document.visibilityState === 'visible') {
+	if (stream != null && window.document.visibilityState === 'visible') {
 		stream.heartbeat();
 	}
 	lastHeartbeatCall = Date.now();
diff --git a/packages/frontend/src/theme.ts b/packages/frontend/src/theme.ts
index 970d143b97..cd44fff0c4 100644
--- a/packages/frontend/src/theme.ts
+++ b/packages/frontend/src/theme.ts
@@ -68,10 +68,10 @@ let timeout: number | null = null;
 export function applyTheme(theme: Theme, persist = true) {
 	if (timeout) window.clearTimeout(timeout);
 
-	document.documentElement.classList.add('_themeChanging_');
+	window.document.documentElement.classList.add('_themeChanging_');
 
 	timeout = window.setTimeout(() => {
-		document.documentElement.classList.remove('_themeChanging_');
+		window.document.documentElement.classList.remove('_themeChanging_');
 
 		// 色計算など再度行えるようにクライアント全体に通知
 		globalEvents.emit('themeChanged');
@@ -79,7 +79,7 @@ export function applyTheme(theme: Theme, persist = true) {
 
 	const colorScheme = theme.base === 'dark' ? 'dark' : 'light';
 
-	document.documentElement.dataset.colorScheme = colorScheme;
+	window.document.documentElement.dataset.colorScheme = colorScheme;
 
 	// Deep copy
 	const _theme = deepClone(theme);
@@ -91,7 +91,7 @@ export function applyTheme(theme: Theme, persist = true) {
 
 	const props = compile(_theme);
 
-	for (const tag of document.head.children) {
+	for (const tag of window.document.head.children) {
 		if (tag.tagName === 'META' && tag.getAttribute('name') === 'theme-color') {
 			tag.setAttribute('content', props['htmlThemeColor']);
 			break;
@@ -99,10 +99,10 @@ export function applyTheme(theme: Theme, persist = true) {
 	}
 
 	for (const [k, v] of Object.entries(props)) {
-		document.documentElement.style.setProperty(`--MI_THEME-${k}`, v.toString());
+		window.document.documentElement.style.setProperty(`--MI_THEME-${k}`, v.toString());
 	}
 
-	document.documentElement.style.setProperty('color-scheme', colorScheme);
+	window.document.documentElement.style.setProperty('color-scheme', colorScheme);
 
 	if (persist) {
 		miLocalStorage.setItem('theme', JSON.stringify(props));
diff --git a/packages/frontend/src/ui/_common_/common.vue b/packages/frontend/src/ui/_common_/common.vue
index a39a4ee86b..930f633c9f 100644
--- a/packages/frontend/src/ui/_common_/common.vue
+++ b/packages/frontend/src/ui/_common_/common.vue
@@ -67,7 +67,7 @@ const dev = _DEV_;
 const notifications = ref<Misskey.entities.Notification[]>([]);
 
 function onNotification(notification: Misskey.entities.Notification, isClient = false) {
-	if (document.visibilityState === 'visible') {
+	if (window.document.visibilityState === 'visible') {
 		if (!isClient && notification.type !== 'test') {
 			// サーバーサイドのテスト通知の際は自動で既読をつけない（テストできないので）
 			useStream().send('readNotification');
diff --git a/packages/frontend/src/ui/_common_/navbar.vue b/packages/frontend/src/ui/_common_/navbar.vue
index 754bf070fa..98d6f329ab 100644
--- a/packages/frontend/src/ui/_common_/navbar.vue
+++ b/packages/frontend/src/ui/_common_/navbar.vue
@@ -129,8 +129,8 @@ watch(store.r.menuDisplay, () => {
 });
 
 function toggleIconOnly() {
-	if (document.startViewTransition && prefer.s.animation) {
-		document.startViewTransition(() => {
+	if (window.document.startViewTransition && prefer.s.animation) {
+		window.document.startViewTransition(() => {
 			store.set('menuDisplay', iconOnly.value ? 'sideFull' : 'sideIcon');
 		});
 	} else {
diff --git a/packages/frontend/src/ui/classic.vue b/packages/frontend/src/ui/classic.vue
index 8f35ce0c68..f51577fc68 100644
--- a/packages/frontend/src/ui/classic.vue
+++ b/packages/frontend/src/ui/classic.vue
@@ -87,9 +87,9 @@ provideMetadataReceiver((metadataGetter) => {
 	pageMetadata.value = info;
 	if (pageMetadata.value) {
 		if (isRoot.value && pageMetadata.value.title === instanceName) {
-			document.title = pageMetadata.value.title;
+			window.document.title = pageMetadata.value.title;
 		} else {
-			document.title = `${pageMetadata.value.title} | ${instanceName}`;
+			window.document.title = `${pageMetadata.value.title} | ${instanceName}`;
 		}
 	}
 });
@@ -142,7 +142,7 @@ if (window.innerWidth < 1024) {
 	window.location.reload();
 }
 
-document.documentElement.style.overflowY = 'scroll';
+window.document.documentElement.style.overflowY = 'scroll';
 
 onMounted(() => {
 	window.addEventListener('resize', () => {
diff --git a/packages/frontend/src/ui/deck.vue b/packages/frontend/src/ui/deck.vue
index 4c33d7cb27..65aff8455a 100644
--- a/packages/frontend/src/ui/deck.vue
+++ b/packages/frontend/src/ui/deck.vue
@@ -202,8 +202,8 @@ function onWheel(ev: WheelEvent) {
 	}
 }
 
-document.documentElement.style.overflowY = 'hidden';
-document.documentElement.style.scrollBehavior = 'auto';
+window.document.documentElement.style.overflowY = 'hidden';
+window.document.documentElement.style.scrollBehavior = 'auto';
 
 async function deleteProfile() {
 	if (prefer.s['deck.profile'] == null) return;
diff --git a/packages/frontend/src/ui/minimum.vue b/packages/frontend/src/ui/minimum.vue
index 94382b664a..ec20ac1114 100644
--- a/packages/frontend/src/ui/minimum.vue
+++ b/packages/frontend/src/ui/minimum.vue
@@ -30,9 +30,9 @@ provideMetadataReceiver((metadataGetter) => {
 	pageMetadata.value = info;
 	if (pageMetadata.value) {
 		if (isRoot.value && pageMetadata.value.title === instanceName) {
-			document.title = pageMetadata.value.title;
+			window.document.title = pageMetadata.value.title;
 		} else {
-			document.title = `${pageMetadata.value.title} | ${instanceName}`;
+			window.document.title = `${pageMetadata.value.title} | ${instanceName}`;
 		}
 	}
 });
diff --git a/packages/frontend/src/ui/universal.vue b/packages/frontend/src/ui/universal.vue
index 92b5d253d3..2742b4cd98 100644
--- a/packages/frontend/src/ui/universal.vue
+++ b/packages/frontend/src/ui/universal.vue
@@ -143,9 +143,9 @@ provideMetadataReceiver((metadataGetter) => {
 	pageMetadata.value = info;
 	if (pageMetadata.value) {
 		if (isRoot.value && pageMetadata.value.title === instanceName) {
-			document.title = pageMetadata.value.title;
+			window.document.title = pageMetadata.value.title;
 		} else {
-			document.title = `${pageMetadata.value.title} | ${instanceName}`;
+			window.document.title = `${pageMetadata.value.title} | ${instanceName}`;
 		}
 	}
 });
@@ -205,12 +205,12 @@ provide<Ref<number>>(CURRENT_STICKY_BOTTOM, navFooterHeight);
 watch(navFooter, () => {
 	if (navFooter.value) {
 		navFooterHeight.value = navFooter.value.offsetHeight;
-		document.body.style.setProperty('--MI-stickyBottom', `${navFooterHeight.value}px`);
-		document.body.style.setProperty('--MI-minBottomSpacing', 'var(--MI-minBottomSpacingMobile)');
+		window.document.body.style.setProperty('--MI-stickyBottom', `${navFooterHeight.value}px`);
+		window.document.body.style.setProperty('--MI-minBottomSpacing', 'var(--MI-minBottomSpacingMobile)');
 	} else {
 		navFooterHeight.value = 0;
-		document.body.style.setProperty('--MI-stickyBottom', '0px');
-		document.body.style.setProperty('--MI-minBottomSpacing', '0px');
+		window.document.body.style.setProperty('--MI-stickyBottom', '0px');
+		window.document.body.style.setProperty('--MI-minBottomSpacing', '0px');
 	}
 }, {
 	immediate: true,
diff --git a/packages/frontend/src/ui/visitor.vue b/packages/frontend/src/ui/visitor.vue
index ddc3761b04..3e07959458 100644
--- a/packages/frontend/src/ui/visitor.vue
+++ b/packages/frontend/src/ui/visitor.vue
@@ -51,9 +51,9 @@ provideMetadataReceiver((metadataGetter) => {
 	pageMetadata.value = info;
 	if (pageMetadata.value) {
 		if (isRoot.value && pageMetadata.value.title === instanceName) {
-			document.title = pageMetadata.value.title;
+			window.document.title = pageMetadata.value.title;
 		} else {
-			document.title = `${pageMetadata.value.title} | ${instanceName}`;
+			window.document.title = `${pageMetadata.value.title} | ${instanceName}`;
 		}
 	}
 });
diff --git a/packages/frontend/src/ui/zen.vue b/packages/frontend/src/ui/zen.vue
index bfb2ef634b..3e4d452281 100644
--- a/packages/frontend/src/ui/zen.vue
+++ b/packages/frontend/src/ui/zen.vue
@@ -45,9 +45,9 @@ provideMetadataReceiver((metadataGetter) => {
 	pageMetadata.value = info;
 	if (pageMetadata.value) {
 		if (isRoot.value && pageMetadata.value.title === instanceName) {
-			document.title = pageMetadata.value.title;
+			window.document.title = pageMetadata.value.title;
 		} else {
-			document.title = `${pageMetadata.value.title} | ${instanceName}`;
+			window.document.title = `${pageMetadata.value.title} | ${instanceName}`;
 		}
 	}
 });
diff --git a/packages/frontend/src/use/use-note-capture.ts b/packages/frontend/src/use/use-note-capture.ts
index 0de2dbb3c5..97aec4c1f0 100644
--- a/packages/frontend/src/use/use-note-capture.ts
+++ b/packages/frontend/src/use/use-note-capture.ts
@@ -86,7 +86,7 @@ export function useNoteCapture(props: {
 	function capture(withHandler = false): void {
 		if (connection) {
 			// TODO: このノートがストリーミング経由で流れてきた場合のみ sr する
-			connection.send(document.body.contains(props.rootEl.value ?? null as Node | null) ? 'sr' : 's', { id: note.value.id });
+			connection.send(window.document.body.contains(props.rootEl.value ?? null as Node | null) ? 'sr' : 's', { id: note.value.id });
 			if (pureNote.value.id !== note.value.id) connection.send('s', { id: pureNote.value.id });
 			if (withHandler) connection.on('noteUpdated', onStreamNoteUpdated);
 		}
diff --git a/packages/frontend/src/use/use-tooltip.ts b/packages/frontend/src/use/use-tooltip.ts
index d9ddfc8b5d..af76a3a1e8 100644
--- a/packages/frontend/src/use/use-tooltip.ts
+++ b/packages/frontend/src/use/use-tooltip.ts
@@ -29,7 +29,7 @@ export function useTooltip(
 		if (!isHovering) return;
 		if (elRef.value == null) return;
 		const el = elRef.value instanceof Element ? elRef.value : elRef.value.$el;
-		if (!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
+		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);
@@ -38,7 +38,7 @@ export function useTooltip(
 		};
 
 		autoHidingTimer = window.setInterval(() => {
-			if (elRef.value == null || !document.body.contains(elRef.value instanceof Element ? elRef.value : elRef.value.$el)) {
+			if (elRef.value == null || !window.document.body.contains(elRef.value instanceof Element ? elRef.value : elRef.value.$el)) {
 				if (!isHovering) return;
 				isHovering = false;
 				window.clearTimeout(timeoutId);
diff --git a/packages/frontend/src/utility/focus-trap.ts b/packages/frontend/src/utility/focus-trap.ts
index fd17fa38a0..13d3bc56d2 100644
--- a/packages/frontend/src/utility/focus-trap.ts
+++ b/packages/frontend/src/utility/focus-trap.ts
@@ -50,7 +50,7 @@ function releaseFocusTrap(el: HTMLElement): void {
 
 	const highestZIndexElement = getHighestZIndexElement();
 
-	if (el.parentElement != null && el !== document.body) {
+	if (el.parentElement != null && el !== window.document.body) {
 		el.parentElement.childNodes.forEach((siblingNode) => {
 			const siblingEl = getHTMLElementOrNull(siblingNode);
 			if (!siblingEl) return;
@@ -104,7 +104,7 @@ export function focusTrap(el: HTMLElement, hasInteractionWithOtherFocusTrappedEl
 		el.inert = false;
 	}
 
-	if (el.parentElement != null && el !== document.body) {
+	if (el.parentElement != null && el !== window.document.body) {
 		el.parentElement.childNodes.forEach((siblingNode) => {
 			const siblingEl = getHTMLElementOrNull(siblingNode);
 			if (!siblingEl) return;
diff --git a/packages/frontend/src/utility/focus.ts b/packages/frontend/src/utility/focus.ts
index e3fd928d1d..cbbe8226d7 100644
--- a/packages/frontend/src/utility/focus.ts
+++ b/packages/frontend/src/utility/focus.ts
@@ -58,7 +58,7 @@ export const focusParent = (input: MaybeHTMLElement | null | undefined, self = f
 
 const focusOrScroll = (element: HTMLElement, scroll: boolean) => {
 	if (scroll) {
-		const scrollContainer = getScrollContainer(element) ?? document.documentElement;
+		const scrollContainer = getScrollContainer(element) ?? window.document.documentElement;
 		const scrollContainerTop = getScrollPosition(scrollContainer);
 		const stickyTop = getStickyTop(element, scrollContainer);
 		const stickyBottom = getStickyBottom(element, scrollContainer);
@@ -74,7 +74,7 @@ const focusOrScroll = (element: HTMLElement, scroll: boolean) => {
 		scrollContainer.scrollTo({ top: scrollTo, behavior: 'instant' });
 	}
 
-	if (document.activeElement !== element) {
+	if (window.document.activeElement !== element) {
 		element.focus({ preventScroll: true });
 	}
 };
diff --git a/packages/frontend/src/utility/fullscreen.ts b/packages/frontend/src/utility/fullscreen.ts
index 7a0a018ef3..6702393cf1 100644
--- a/packages/frontend/src/utility/fullscreen.ts
+++ b/packages/frontend/src/utility/fullscreen.ts
@@ -35,8 +35,8 @@ export const requestFullscreen = ({ videoEl, playerEl, options }: RequestFullscr
 
 export const exitFullscreen = ({ videoEl }: ExitFullscreenProps) => {
 	// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
-	if (document.exitFullscreen != null) {
-		document.exitFullscreen();
+	if (window.document.exitFullscreen != null) {
+		window.document.exitFullscreen();
 		return;
 	}
 	if (videoEl.webkitExitFullscreen != null) {
diff --git a/packages/frontend/src/utility/hotkey.ts b/packages/frontend/src/utility/hotkey.ts
index fe62139a74..81fc28d7c8 100644
--- a/packages/frontend/src/utility/hotkey.ts
+++ b/packages/frontend/src/utility/hotkey.ts
@@ -54,9 +54,9 @@ export const makeHotkey = (keymap: Keymap) => {
 	const actions = parseKeymap(keymap);
 	return (ev: KeyboardEvent) => {
 		if ('pswp' in window && window.pswp != null) return;
-		if (document.activeElement != null) {
-			if (IGNORE_ELEMENTS.includes(document.activeElement.tagName.toLowerCase())) return;
-			if (getHTMLElementOrNull(document.activeElement)?.isContentEditable) return;
+		if (window.document.activeElement != null) {
+			if (IGNORE_ELEMENTS.includes(window.document.activeElement.tagName.toLowerCase())) return;
+			if (getHTMLElementOrNull(window.document.activeElement)?.isContentEditable) return;
 		}
 		for (const action of actions) {
 			if (matchPatterns(ev, action)) {
diff --git a/packages/frontend/src/utility/init-chart.ts b/packages/frontend/src/utility/init-chart.ts
index 9775b9fec4..260899c1d7 100644
--- a/packages/frontend/src/utility/init-chart.ts
+++ b/packages/frontend/src/utility/init-chart.ts
@@ -50,7 +50,7 @@ export function initChart() {
 	);
 
 	// フォントカラー
-	Chart.defaults.color = getComputedStyle(document.documentElement).getPropertyValue('--MI_THEME-fg');
+	Chart.defaults.color = getComputedStyle(window.document.documentElement).getPropertyValue('--MI_THEME-fg');
 
 	Chart.defaults.borderColor = store.s.darkMode ? 'rgba(255, 255, 255, 0.1)' : 'rgba(0, 0, 0, 0.1)';
 
diff --git a/packages/frontend/src/utility/physics.ts b/packages/frontend/src/utility/physics.ts
index 8a4e9319b3..5de34fd094 100644
--- a/packages/frontend/src/utility/physics.ts
+++ b/packages/frontend/src/utility/physics.ts
@@ -28,7 +28,7 @@ export function physics(container: HTMLElement) {
 	// create renderer
 	const render = Matter.Render.create({
 		engine: engine,
-		//element: document.getElementById('debug'),
+		//element: window.document.getElementById('debug'),
 		options: {
 			width: containerWidth,
 			height: containerHeight,
diff --git a/packages/frontend/src/utility/select-file.ts b/packages/frontend/src/utility/select-file.ts
index 1bee4986f6..b9b3687483 100644
--- a/packages/frontend/src/utility/select-file.ts
+++ b/packages/frontend/src/utility/select-file.ts
@@ -25,7 +25,7 @@ export function chooseFileFromPc(
 	const nameConverter = options?.nameConverter ?? (() => undefined);
 
 	return new Promise((res, rej) => {
-		const input = document.createElement('input');
+		const input = window.document.createElement('input');
 		input.type = 'file';
 		input.multiple = multiple;
 		input.onchange = () => {
diff --git a/packages/frontend/src/utility/snowfall-effect.ts b/packages/frontend/src/utility/snowfall-effect.ts
index d88bdb6660..5c86969876 100644
--- a/packages/frontend/src/utility/snowfall-effect.ts
+++ b/packages/frontend/src/utility/snowfall-effect.ts
@@ -156,7 +156,7 @@ export class SnowfallEffect {
 		easing: 0.0005,
 	};
 	/**
-	 * @throws {Error} - Thrown when it fails to get WebGL context for the canvas 
+	 * @throws {Error} - Thrown when it fails to get WebGL context for the canvas
 	 */
 	constructor(options: {
 		sakura?: boolean;
@@ -172,7 +172,7 @@ export class SnowfallEffect {
 		const gl = canvas.getContext('webgl2', { antialias: true });
 		if (gl == null) throw new Error('Failed to get WebGL context');
 
-		document.body.append(canvas);
+		window.document.body.append(canvas);
 
 		this.canvas = canvas;
 		this.gl = gl;
@@ -190,7 +190,7 @@ export class SnowfallEffect {
 	}
 
 	private initCanvas(): HTMLCanvasElement {
-		const canvas = document.createElement('canvas');
+		const canvas = window.document.createElement('canvas');
 
 		Object.assign(canvas.style, {
 			position: 'fixed',
diff --git a/packages/frontend/src/utility/sound.ts b/packages/frontend/src/utility/sound.ts
index 120f480b63..796af0e5ca 100644
--- a/packages/frontend/src/utility/sound.ts
+++ b/packages/frontend/src/utility/sound.ts
@@ -226,7 +226,7 @@ export function createSourceNode(buffer: AudioBuffer, opts: {
  * @param file ファイルのURL（ドライブIDではない）
  */
 export async function getSoundDuration(file: string): Promise<number> {
-	const audioEl = document.createElement('audio');
+	const audioEl = window.document.createElement('audio');
 	audioEl.src = file;
 	return new Promise((resolve) => {
 		const si = setInterval(() => {
@@ -249,7 +249,7 @@ export function isMute(): boolean {
 	}
 
 	// noinspection RedundantIfStatementJS
-	if (prefer.s['sound.useSoundOnlyWhenActive'] && document.visibilityState === 'hidden') {
+	if (prefer.s['sound.useSoundOnlyWhenActive'] && window.document.visibilityState === 'hidden') {
 		// ブラウザがアクティブな時のみサウンドを出力する
 		return true;
 	}
diff --git a/packages/frontend/src/utility/sticky-sidebar.ts b/packages/frontend/src/utility/sticky-sidebar.ts
index 50f1e6ecc8..867c9b8324 100644
--- a/packages/frontend/src/utility/sticky-sidebar.ts
+++ b/packages/frontend/src/utility/sticky-sidebar.ts
@@ -18,7 +18,7 @@ export class StickySidebar {
 		this.container = container;
 		this.el = this.container.children[0] as HTMLElement;
 		this.el.style.position = 'sticky';
-		this.spacer = document.createElement('div');
+		this.spacer = window.document.createElement('div');
 		this.container.prepend(this.spacer);
 		this.marginTop = marginTop;
 		this.offsetTop = this.container.getBoundingClientRect().top;
diff --git a/packages/frontend/src/utility/upload/isWebpSupported.ts b/packages/frontend/src/utility/upload/isWebpSupported.ts
index 2511236ecc..affd81fd57 100644
--- a/packages/frontend/src/utility/upload/isWebpSupported.ts
+++ b/packages/frontend/src/utility/upload/isWebpSupported.ts
@@ -6,7 +6,7 @@
 let isWebpSupportedCache: boolean | undefined;
 export function isWebpSupported() {
 	if (isWebpSupportedCache === undefined) {
-		const canvas = document.createElement('canvas');
+		const canvas = window.document.createElement('canvas');
 		canvas.width = 1;
 		canvas.height = 1;
 		isWebpSupportedCache = canvas.toDataURL('image/webp').startsWith('data:image/webp');
diff --git a/packages/frontend/src/widgets/WidgetRss.vue b/packages/frontend/src/widgets/WidgetRss.vue
index a7213f4c21..132eb0a629 100644
--- a/packages/frontend/src/widgets/WidgetRss.vue
+++ b/packages/frontend/src/widgets/WidgetRss.vue
@@ -77,7 +77,7 @@ const fetchEndpoint = computed(() => {
 const intervalClear = ref<(() => void) | undefined>();
 
 const tick = () => {
-	if (document.visibilityState === 'hidden' && rawItems.value.length !== 0) return;
+	if (window.document.visibilityState === 'hidden' && rawItems.value.length !== 0) return;
 
 	window.fetch(fetchEndpoint.value, {})
 		.then(res => res.json())
diff --git a/packages/frontend/src/widgets/WidgetRssTicker.vue b/packages/frontend/src/widgets/WidgetRssTicker.vue
index 13b76533d7..b5be4d35c2 100644
--- a/packages/frontend/src/widgets/WidgetRssTicker.vue
+++ b/packages/frontend/src/widgets/WidgetRssTicker.vue
@@ -108,7 +108,7 @@ const intervalClear = ref<(() => void) | undefined>();
 const key = ref(0);
 
 const tick = () => {
-	if (document.visibilityState === 'hidden' && rawItems.value.length !== 0) return;
+	if (window.document.visibilityState === 'hidden' && rawItems.value.length !== 0) return;
 
 	window.fetch(fetchEndpoint.value, {})
 		.then(res => res.json())
diff --git a/packages/frontend/test/scroll.test.ts b/packages/frontend/test/scroll.test.ts
index 32a5a1c558..34e7e64313 100644
--- a/packages/frontend/test/scroll.test.ts
+++ b/packages/frontend/test/scroll.test.ts
@@ -12,10 +12,10 @@ describe('Scroll', () => {
 		/* 動作しない(happy-domのバグ？)
 		test('Initial onScrollTop callback for connected elements', () => {
 			const { document } = new Window();
-			const div = document.createElement('div');
+			const div = window.document.createElement('div');
 			assert.strictEqual(div.scrollTop, 0);
 
-			document.body.append(div);
+			window.document.body.append(div);
 
 			let called = false;
 			onScrollTop(div as any as HTMLElement, () => called = true);
@@ -26,7 +26,7 @@ describe('Scroll', () => {
 
 		test('No onScrollTop callback for disconnected elements', () => {
 			const { document } = new Window();
-			const div = document.createElement('div');
+			const div = window.document.createElement('div');
 			assert.strictEqual(div.scrollTop, 0);
 
 			let called = false;
@@ -40,10 +40,10 @@ describe('Scroll', () => {
 		/* 動作しない(happy-domのバグ？)
 		test('Initial onScrollBottom callback for connected elements', () => {
 			const { document } = new Window();
-			const div = document.createElement('div');
+			const div = window.document.createElement('div');
 			assert.strictEqual(div.scrollTop, 0);
 
-			document.body.append(div);
+			window.document.body.append(div);
 
 			let called = false;
 			onScrollBottom(div as any as HTMLElement, () => called = true);
@@ -54,7 +54,7 @@ describe('Scroll', () => {
 
 		test('No onScrollBottom callback for disconnected elements', () => {
 			const { document } = new Window();
-			const div = document.createElement('div');
+			const div = window.document.createElement('div');
 			assert.strictEqual(div.scrollTop, 0);
 
 			let called = false;