fix(frontend): shikiの言語・テーマの定義ファイルをCDN(esm.sh)から取るようにする

CHANGELOG.md

@@ -18,6 +18,8 @@
   (Cherry-picked from https://activitypub.software/TransFem-org/Sharkey/-/merge_requests/459)
 - Fix: ページタイトルでローカルユーザーとリモートユーザーの区別がつかない問題を修正  
   (Cherry-picked from https://github.com/MisskeyIO/misskey/pull/528)
+- Fix: コードブロックのシンタックスハイライトで使用される定義ファイルをCDNから取得するように #13177
+  - CDNから取得せずMisskey本体にバンドルする場合は`pacakges/frontend/vite.config.ts`を修正してください。
 
 ### Server
 - Enhance: エンドポイント`antennas/update`の必須項目を`antennaId`のみに

packages/frontend/package.json

@@ -60,7 +60,7 @@
 		"rollup": "4.12.0",
 		"sanitize-html": "2.12.1",
 		"sass": "1.71.1",
-		"shiki": "1.1.7",
+		"shiki": "1.2.0",
 		"strict-event-emitter-types": "2.0.0",
 		"textarea-caret": "3.1.0",
 		"three": "0.162.0",

packages/frontend/src/components/MkCode.core.vue

@@ -9,9 +9,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
-import { ref, computed, watch } from 'vue';
-import { bundledLanguagesInfo } from 'shiki';
-import type { BuiltinLanguage } from 'shiki';
+import { computed, ref, watch } from 'vue';
+import { bundledLanguagesInfo } from 'shiki/langs';
+import type { BundledLanguage } from 'shiki/langs';
 import { getHighlighter, getTheme } from '@/scripts/code-highlighter.js';
 import { defaultStore } from '@/store.js';
 
@@ -23,7 +23,7 @@ const props = defineProps<{
 
 const highlighter = await getHighlighter();
 const darkMode = defaultStore.reactiveState.darkMode;
-const codeLang = ref<BuiltinLanguage | 'aiscript'>('js');
+const codeLang = ref<BundledLanguage | 'aiscript'>('js');
 
 const [lightThemeName, darkThemeName] = await Promise.all([
 	getTheme('light', true),
@@ -42,7 +42,7 @@ const html = computed(() => highlighter.codeToHtml(props.code, {
 }));
 
 async function fetchLanguage(to: string): Promise<void> {
-	const language = to as BuiltinLanguage;
+	const language = to as BundledLanguage;
 
 	// Check for the loaded languages, and load the language if it's not loaded yet.
 	if (!highlighter.getLoadedLanguages().includes(language)) {

packages/frontend/src/index.html

@@ -18,7 +18,7 @@
 		http-equiv="Content-Security-Policy"
 		content="default-src 'self' https://newassets.hcaptcha.com/ https://challenges.cloudflare.com/ http://localhost:7493/;
 			worker-src 'self';
-			script-src 'self' 'unsafe-eval' https://*.hcaptcha.com https://challenges.cloudflare.com;
+			script-src 'self' 'unsafe-eval' https://*.hcaptcha.com https://challenges.cloudflare.com https://esm.sh;
 			style-src 'self' 'unsafe-inline';
 			img-src 'self' data: blob: www.google.com xn--931a.moe localhost:3000 localhost:5173 127.0.0.1:5173 127.0.0.1:3000;
 			media-src 'self' localhost:3000 localhost:5173 127.0.0.1:5173 127.0.0.1:3000;

packages/frontend/src/scripts/code-highlighter.ts

@@ -3,18 +3,19 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { bundledThemesInfo } from 'shiki';
 import { getHighlighterCore, loadWasm } from 'shiki/core';
 import darkPlus from 'shiki/themes/dark-plus.mjs';
+import { bundledThemesInfo } from 'shiki/themes';
+import { bundledLanguagesInfo } from 'shiki/langs';
 import { unique } from './array.js';
 import { deepClone } from './clone.js';
 import { deepMerge } from './merge.js';
-import type { Highlighter, LanguageRegistration, ThemeRegistration, ThemeRegistrationRaw } from 'shiki';
+import type { HighlighterCore, LanguageRegistration, ThemeRegistration, ThemeRegistrationRaw } from 'shiki/core';
 import { ColdDeviceStorage } from '@/store.js';
 import lightTheme from '@/themes/_light.json5';
 import darkTheme from '@/themes/_dark.json5';
 
-let _highlighter: Highlighter | null = null;
+let _highlighter: HighlighterCore | null = null;
 
 export async function getTheme(mode: 'light' | 'dark', getName: true): Promise<string>;
 export async function getTheme(mode: 'light' | 'dark', getName?: false): Promise<ThemeRegistration | ThemeRegistrationRaw>;
@@ -51,16 +52,14 @@ export async function getTheme(mode: 'light' | 'dark', getName = false): Promise
 	return darkPlus;
 }
 
-export async function getHighlighter(): Promise<Highlighter> {
+export async function getHighlighter(): Promise<HighlighterCore> {
 	if (!_highlighter) {
 		return await initHighlighter();
 	}
 	return _highlighter;
 }
 
-export async function initHighlighter() {
-	const aiScriptGrammar = await import('aiscript-vscode/aiscript/syntaxes/aiscript.tmLanguage.json');
-
+async function initHighlighter() {
 	await loadWasm(import('shiki/onig.wasm?init'));
 
 	// テーマの重複を消す
@@ -69,11 +68,12 @@ export async function initHighlighter() {
 		...(await Promise.all([getTheme('light'), getTheme('dark')])),
 	]);
 
+	const jsLangInfo = bundledLanguagesInfo.find(t => t.id === 'javascript');
 	const highlighter = await getHighlighterCore({
 		themes,
 		langs: [
-			import('shiki/langs/javascript.mjs'),
-			aiScriptGrammar.default as unknown as LanguageRegistration,
+			...(jsLangInfo ? [async () => await jsLangInfo.import()] : []),
+			async () => (await import('aiscript-vscode/aiscript/syntaxes/aiscript.tmLanguage.json')).default as unknown as LanguageRegistration,
 		],
 	});
 

packages/frontend/src/scripts/theme.ts

@@ -6,7 +6,7 @@
 import { ref } from 'vue';
 import tinycolor from 'tinycolor2';
 import { deepClone } from './clone.js';
-import type { BuiltinTheme } from 'shiki';
+import type { BundledTheme } from 'shiki/themes';
 import { globalEvents } from '@/events.js';
 import lightTheme from '@/themes/_light.json5';
 import darkTheme from '@/themes/_dark.json5';
@@ -20,7 +20,7 @@ export type Theme = {
 	base?: 'dark' | 'light';
 	props: Record<string, string>;
 	codeHighlighter?: {
-		base: BuiltinTheme;
+		base: BundledTheme;
 		overrides?: Record<string, any>;
 	} | {
 		base: '_none_';

packages/frontend/src/store.ts

@@ -7,7 +7,6 @@ import { markRaw, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import { miLocalStorage } from './local-storage.js';
 import type { SoundType } from '@/scripts/sound.js';
-import type { BuiltinTheme as ShikiBuiltinTheme } from 'shiki';
 import { Storage } from '@/pizzax.js';
 import { hemisphere } from '@/scripts/intl-const.js';
 

packages/frontend/vite.config.ts

@@ -5,11 +5,30 @@ import { type UserConfig, defineConfig } from 'vite';
 
 import locales from '../../locales/index.js';
 import meta from '../../package.json';
+import packageInfo from './package.json' assert { type: 'json' };
 import pluginUnwindCssModuleClassName from './lib/rollup-plugin-unwind-css-module-class-name.js';
 import pluginJson5 from './vite.json5.js';
 
 const extensions = ['.ts', '.tsx', '.js', '.jsx', '.mjs', '.json', '.json5', '.svg', '.sass', '.scss', '.css', '.vue'];
 
+/**
+ * Misskeyのフロントエンドにバンドルせず、CDNなどから別途読み込むリソースを記述する。
+ * CDNを使わずにバンドルしたい場合、以下の配列から該当要素を削除orコメントアウトすればOK
+ */
+const externalPackages = [
+	// shiki（コードブロックのシンタックスハイライトで使用中）はテーマ・言語の定義の容量が大きいため、それらはCDNから読み込む
+	{
+		name: 'shiki',
+		match: /^shiki\/(?<subPkg>(langs|themes))$/,
+		path(id: string, pattern: RegExp): string {
+			const match = pattern.exec(id)?.groups;
+			return match
+				? `https://esm.sh/shiki@${packageInfo.dependencies.shiki}/${match['subPkg']}`
+				: id;
+		},
+	},
+];
+
 const hash = (str: string, seed = 0): number => {
 	let h1 = 0xdeadbeef ^ seed,
 		h2 = 0x41c6ce57 ^ seed;
@@ -112,13 +131,23 @@ export function getConfig(): UserConfig {
 				input: {
 					app: './src/_boot_.ts',
 				},
+				external: externalPackages.map(p => p.match),
 				output: {
 					manualChunks: {
 						vue: ['vue'],
 						photoswipe: ['photoswipe', 'photoswipe/lightbox', 'photoswipe/style.css'],
 					},
 					chunkFileNames: process.env.NODE_ENV === 'production' ? '[hash:8].js' : '[name]-[hash:8].js',
 					assetFileNames: process.env.NODE_ENV === 'production' ? '[hash:8][extname]' : '[name]-[hash:8][extname]',
+					paths(id) {
+						for (const p of externalPackages) {
+							if (p.match.test(id)) {
+								return p.path(id, p.match);
+							}
+						}
+
+						return id;
+					},
 				},
 			},
 			cssCodeSplit: true,