enhance(backend): pugをやめ、JSXベースのテンプレートに変更 (#16908)

* enhance(backend): pugをやめ、JSXベースのテンプレートに変更 (to misskey-dev dev branch) (#16889)

* wip

* wip

* wip

* wip

* fix lint

* attempt to fix test

* fix

* fix

* fix: oauthページの描画がおかしい問題を修正

* typo [ci skip]

* fix

* fix

* fix

* fix

* fix

* refactor

* fix

* fix

* fix broken lockfile

* fix: expose supported languages as global variable

* remove i18n package from root as it is no longer required [ci skip]

* fix

* fix: add i18n package.json to Docker target-builder stage for federation tests (#16909)

* Initial plan

* fix: add i18n package.json to Docker target-builder stage for federation tests

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

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

* fix: followup-test-federation for enh-remove-pug (#16910)

* fix: followup-test-federation for enh-remove-pug

* Revert "fix: add i18n package.json to Docker target-builder stage for federation tests (#16909)"

This reverts commit 14313468d34f49c363eef4d0a932e9fc0d9a37fb.

* fix: CSSが読み込まれない場合がある問題を修正

* fix [ci skip]

* fix: propsのデフォルト値をnull合体演算子から論理和演算子に変更（空文字に対処するため）

* remove @types/pug

* enhance: bootloaderを埋め込むように

* fix possible race condition

* remove esbuild

---------

Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com>
Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>
Co-authored-by: おさむのひと <46447427+samunohito@users.noreply.github.com>

2 files changed, 414 insertions, 0 deletions

diff --git a/packages/frontend/public/loader/boot.js b/packages/frontend/public/loader/boot.js
new file mode 100644
index 0000000000..ab4b158287
--- /dev/null
+++ b/packages/frontend/public/loader/boot.js
@@ -0,0 +1,336 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+'use strict';
+
+// ブロックの中に入れないと、定義した変数がブラウザのグローバルスコープに登録されてしまい邪魔なので
+(async () => {
+	window.onerror = (e) => {
+		console.error(e);
+		renderError('SOMETHING_HAPPENED', e);
+	};
+	window.onunhandledrejection = (e) => {
+		console.error(e);
+		renderError('SOMETHING_HAPPENED_IN_PROMISE', e.reason || e);
+	};
+
+	let forceError = localStorage.getItem('forceError');
+	if (forceError != null) {
+		renderError('FORCED_ERROR', 'This error is forced by having forceError in local storage.');
+		return;
+	}
+
+	//#region Detect language
+	const supportedLangs = LANGS;
+	/** @type { string } */
+	let lang = localStorage.getItem('lang');
+	if (lang == null || !supportedLangs.includes(lang)) {
+		if (supportedLangs.includes(navigator.language)) {
+			lang = navigator.language;
+		} else {
+			lang = supportedLangs.find(x => x.split('-')[0] === navigator.language);
+
+			// Fallback
+			if (lang == null) lang = 'en-US';
+		}
+	}
+
+	// for https://github.com/misskey-dev/misskey/issues/10202
+	if (lang == null || lang.toString == null || lang.toString() === 'null') {
+		console.error('invalid lang value detected!!!', typeof lang, lang);
+		lang = 'en-US';
+	}
+	//#endregion
+
+	//#region Script
+	async function importAppScript() {
+		await import(CLIENT_ENTRY ? `/vite/${CLIENT_ENTRY.replace('scripts', lang)}` : '/vite/src/_boot_.ts')
+			.catch(async e => {
+				console.error(e);
+				renderError('APP_IMPORT', e);
+			});
+	}
+
+	// タイミングによっては、この時点でDOMの構築が済んでいる場合とそうでない場合とがある
+	if (document.readyState !== 'loading') {
+		importAppScript();
+	} else {
+		window.addEventListener('DOMContentLoaded', () => {
+			importAppScript();
+		});
+	}
+	//#endregion
+
+	let isSafeMode = (localStorage.getItem('isSafeMode') === 'true');
+
+	if (!isSafeMode) {
+		const urlParams = new URLSearchParams(window.location.search);
+
+		if (urlParams.has('safemode') && urlParams.get('safemode') === 'true') {
+			localStorage.setItem('isSafeMode', 'true');
+			isSafeMode = true;
+		}
+	}
+
+	//#region Theme
+	if (!isSafeMode) {
+		const theme = localStorage.getItem('theme');
+		if (theme) {
+			for (const [k, v] of Object.entries(JSON.parse(theme))) {
+				document.documentElement.style.setProperty(`--MI_THEME-${k}`, v.toString());
+
+				// HTMLの theme-color 適用
+				if (k === 'htmlThemeColor') {
+					for (const tag of document.head.children) {
+						if (tag.tagName === 'META' && tag.getAttribute('name') === 'theme-color') {
+							tag.setAttribute('content', v);
+							break;
+						}
+					}
+				}
+			}
+		}
+	}
+
+	const colorScheme = localStorage.getItem('colorScheme');
+	if (colorScheme) {
+		document.documentElement.style.setProperty('color-scheme', colorScheme);
+	}
+	//#endregion
+
+	const fontSize = localStorage.getItem('fontSize');
+	if (fontSize) {
+		document.documentElement.classList.add('f-' + fontSize);
+	}
+
+	const useSystemFont = localStorage.getItem('useSystemFont');
+	if (useSystemFont) {
+		document.documentElement.classList.add('useSystemFont');
+	}
+
+	if (!isSafeMode) {
+		const customCss = localStorage.getItem('customCss');
+		if (customCss && customCss.length > 0) {
+			const style = document.createElement('style');
+			style.innerHTML = customCss;
+			document.head.appendChild(style);
+		}
+	}
+
+	async function addStyle(styleText) {
+		let css = document.createElement('style');
+		css.appendChild(document.createTextNode(styleText));
+		document.head.appendChild(css);
+	}
+
+	async function renderError(code, details) {
+		// Cannot set property 'innerHTML' of null を回避
+		if (document.readyState === 'loading') {
+			await new Promise(resolve => window.addEventListener('DOMContentLoaded', resolve));
+		}
+
+		let messages = null;
+		const bootloaderLocales = localStorage.getItem('bootloaderLocales');
+		if (bootloaderLocales) {
+			messages = JSON.parse(bootloaderLocales);
+		}
+		if (!messages) {
+			// older version of misskey does not store bootloaderLocales, stores locale as a whole
+			const legacyLocale = localStorage.getItem('locale');
+			if (legacyLocale) {
+				const parsed = JSON.parse(legacyLocale);
+				messages = {
+					...(parsed._bootErrors ?? {}),
+					reload: parsed.reload,
+				};
+			}
+		}
+		if (!messages) messages = {};
+
+		messages = Object.assign({
+			title: 'Failed to initialize Misskey',
+			solution: 'The following actions may solve the problem.',
+			solution1: 'Update your os and browser',
+			solution2: 'Disable an adblocker',
+			solution3: 'Clear the browser cache',
+			solution4: '(Tor Browser) Set dom.webaudio.enabled to true',
+			otherOption: 'Other options',
+			otherOption1: 'Clear preferences and cache',
+			otherOption2: 'Start the simple client',
+			otherOption3: 'Start the repair tool',
+			otherOption4: 'Start Misskey in safe mode',
+			reload: 'Reload',
+		}, messages);
+
+		const safeModeUrl = new URL(window.location.href);
+		safeModeUrl.searchParams.set('safemode', 'true');
+
+		let errorsElement = document.getElementById('errors');
+
+		if (!errorsElement) {
+			document.body.innerHTML = `
+			<svg class="icon-warning" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round">
+				<path stroke="none" d="M0 0h24v24H0z" fill="none"></path>
+				<path d="M12 9v2m0 4v.01"></path>
+				<path d="M5 19h14a2 2 0 0 0 1.84 -2.75l-7.1 -12.25a2 2 0 0 0 -3.5 0l-7.1 12.25a2 2 0 0 0 1.75 2.75"></path>
+			</svg>
+			<h1>${messages.title}</h1>
+			<button class="button-big" onclick="location.reload(true);">
+				<span class="button-label-big">${messages?.reload}</span>
+			</button>
+			<p><b>${messages.solution}</b></p>
+			<p>${messages.solution1}</p>
+			<p>${messages.solution2}</p>
+			<p>${messages.solution3}</p>
+			<p>${messages.solution4}</p>
+			<details style="color: #86b300;">
+				<summary>${messages.otherOption}</summary>
+				<a href="${safeModeUrl}">
+					<button class="button-small">
+						<span class="button-label-small">${messages.otherOption4}</span>
+					</button>
+				</a>
+				<br>
+				<a href="/flush">
+					<button class="button-small">
+						<span class="button-label-small">${messages.otherOption1}</span>
+					</button>
+				</a>
+				<br>
+				<a href="/cli">
+					<button class="button-small">
+						<span class="button-label-small">${messages.otherOption2}</span>
+					</button>
+				</a>
+				<br>
+				<a href="/bios">
+					<button class="button-small">
+						<span class="button-label-small">${messages.otherOption3}</span>
+					</button>
+				</a>
+			</details>
+			<br>
+			<div id="errors"></div>
+			`;
+			errorsElement = document.getElementById('errors');
+		}
+		const detailsElement = document.createElement('details');
+		detailsElement.id = 'errorInfo';
+		detailsElement.innerHTML = `
+		<br>
+		<summary>
+			<code>ERROR CODE: ${code}</code>
+		</summary>
+		<code>${details.toString()} ${JSON.stringify(details)}</code>`;
+		errorsElement.appendChild(detailsElement);
+		addStyle(`
+		* {
+			font-family: BIZ UDGothic, Roboto, HelveticaNeue, Arial, sans-serif;
+		}
+
+		#misskey_app,
+		#splash {
+			display: none !important;
+		}
+
+		body,
+		html {
+			background-color: #222;
+			color: #dfddcc;
+			justify-content: center;
+			margin: auto;
+			padding: 10px;
+			text-align: center;
+		}
+
+		button {
+			border-radius: 999px;
+			padding: 0px 12px 0px 12px;
+			border: none;
+			cursor: pointer;
+			margin-bottom: 12px;
+		}
+
+		.button-big {
+			background: linear-gradient(90deg, rgb(134, 179, 0), rgb(74, 179, 0));
+			line-height: 50px;
+		}
+
+		.button-big:hover {
+			background: rgb(153, 204, 0);
+		}
+
+		.button-small {
+			background: #444;
+			line-height: 40px;
+		}
+
+		.button-small:hover {
+			background: #555;
+		}
+
+		.button-label-big {
+			color: #222;
+			font-weight: bold;
+			font-size: 1.2em;
+			padding: 12px;
+		}
+
+		.button-label-small {
+			color: rgb(153, 204, 0);
+			font-size: 16px;
+			padding: 12px;
+		}
+
+		a {
+			color: rgb(134, 179, 0);
+			text-decoration: none;
+		}
+
+		p,
+		li {
+			font-size: 16px;
+		}
+
+		.icon-warning {
+			color: #dec340;
+			height: 4rem;
+			padding-top: 2rem;
+		}
+
+		h1 {
+			font-size: 1.5em;
+			margin: 1em;
+		}
+
+		code {
+			font-family: Fira, FiraCode, monospace;
+		}
+
+		#errorInfo {
+			background: #333;
+			margin-bottom: 2rem;
+			padding: 0.5rem 1rem;
+			width: 40rem;
+			border-radius: 10px;
+			justify-content: center;
+			margin: auto;
+		}
+
+		#errorInfo summary {
+			cursor: pointer;
+		}
+
+		#errorInfo summary > * {
+			display: inline;
+		}
+
+		@media screen and (max-width: 500px) {
+			#errorInfo {
+				width: 50%;
+			}
+		}`);
+	}
+})();
diff --git a/packages/frontend/public/loader/style.css b/packages/frontend/public/loader/style.css
new file mode 100644
index 0000000000..8e63a2ea66
--- /dev/null
+++ b/packages/frontend/public/loader/style.css
@@ -0,0 +1,78 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+html {
+	background-color: var(--MI_THEME-bg);
+	color: var(--MI_THEME-fg);
+}
+
+#splash {
+	position: fixed;
+	z-index: 10000;
+	top: 0;
+	left: 0;
+	width: 100vw;
+	height: 100vh;
+	cursor: wait;
+	background-color: var(--MI_THEME-bg);
+	opacity: 1;
+	transition: opacity 0.5s ease;
+}
+
+#splashIcon {
+	position: absolute;
+	top: 0;
+	right: 0;
+	bottom: 0;
+	left: 0;
+	margin: auto;
+	width: 64px;
+	height: 64px;
+	border-radius: 10px;
+	pointer-events: none;
+}
+
+#splashSpinner {
+	position: absolute;
+	top: 0;
+	right: 0;
+	bottom: 0;
+	left: 0;
+	margin: auto;
+	display: inline-block;
+	width: 28px;
+	height: 28px;
+	transform: translateY(70px);
+	color: var(--MI_THEME-accent);
+}
+
+#splashSpinner > .spinner {
+	position: absolute;
+	top: 0;
+	left: 0;
+	width: 28px;
+	height: 28px;
+	fill-rule: evenodd;
+	clip-rule: evenodd;
+	stroke-linecap: round;
+	stroke-linejoin: round;
+	stroke-miterlimit: 1.5;
+}
+#splashSpinner > .spinner.bg {
+	opacity: 0.275;
+}
+#splashSpinner > .spinner.fg {
+	animation: splashSpinner 0.5s linear infinite;
+}
+
+@keyframes splashSpinner {
+	0% {
+		transform: rotate(0deg);
+	}
+	100% {
+		transform: rotate(360deg);
+	}
+}