feat: 删除无用依赖，shiki lang使用懒加载方式加载语言

src/lib/processHtml.ts

@@ -5,41 +5,37 @@ const DEFAULT_THEME = 'github-dark-dimmed'
 
 const highlighter = await createHighlighter({
   themes: [DEFAULT_THEME],
-  langs: [
-    "bash",
-    "json",
-    "yaml",
-    "xml",
-    "html",
-    "css",
-    "scss",
-    "javascript",
-    "typescript",
-    "jsx",
-    "tsx",
-    "vue",
-    "markdown",
-    "sql",
-    "python",
-    "go",
-    "dockerfile",
-    "nginx"
-  ]
+  langs: []
 })
 
-const resolveLang = (lang: string) => {
-  const supported = highlighter.getLoadedLanguages?.() || []
-  if (!lang) return 'text'
-  if (supported.includes(lang)) return lang
-  return 'text'
+const SUPPORTED_LANGS = [
+  "bash", "json", "yaml", "xml", "html", "css", "scss",
+  "javascript", "typescript", "jsx", "tsx", "vue",
+  "markdown", "sql", "python", "go", "dockerfile", "nginx"
+] as const
+
+const loadedLangs = new Set<string>(['text'])
+
+type SupportedLang = typeof SUPPORTED_LANGS[number]
+
+const supportedSet = new Set<string>(SUPPORTED_LANGS)
+
+const ensureLangLoaded = async (lang: string): Promise<string> => {
+  if (lang === 'text' || loadedLangs.has(lang)) return lang
+  if (!supportedSet.has(lang)) return 'text'
+  try {
+    await highlighter.loadLanguage(lang as SupportedLang)
+    loadedLangs.add(lang)
+    return lang
+  } catch {
+    return 'text'
+  }
 }
 
 export const processHtmlWithJsdom = async (rawHtml: string) => {
-
   const dom = new JSDOM(rawHtml)
   const document = dom.window.document
 
-  // 高亮处理代码块
   const codeBlocks = document.querySelectorAll('pre code')
 
   for (const codeBlock of codeBlocks) {
@@ -55,9 +51,8 @@ export const processHtmlWithJsdom = async (rawHtml: string) => {
       }
     }
 
-    lang = resolveLang(lang)
+    lang = await ensureLangLoaded(lang)   // ← 唯一改动点：按需加载
 
-    // 高亮
     const highlighted = highlighter.codeToHtml(codeContent, {
       lang,
       theme: DEFAULT_THEME,
@@ -116,5 +111,5 @@ export const processHtmlWithJsdom = async (rawHtml: string) => {
     }
   }
 
-  return dom.serialize()
+  return document.body.innerHTML
 }

src/pages/post/[...slug].astro

@@ -140,6 +140,8 @@ const published_at = formatDatetime(data.published_at, "YYYY.MM.DD");
     const article = document.querySelector(".markdown-body")!;
     const images = Array.from(article.querySelectorAll("img"));
 
+    if(images.length === 0) return
+
     const waitImageLoaded = (img: HTMLImageElement) => {
       if (img.complete && img.naturalWidth > 0 && img.naturalHeight > 0) {
         return Promise.resolve();