fix: fix mermaid error

docs/.vuepress/theme.ts

@@ -0,0 +1,74 @@
+import { defaultTheme } from '@vuepress/theme-default'
+// import { path, getDirname } from '@vuepress/utils'
+import { path, getDirname } from 'vuepress/utils'
+import process from 'node:process'
+import { navbarEn, navbarZh, sidebarEn, sidebarZh } from './config/index.js'
+
+let __dirname = getDirname(import.meta.url)
+const isProduction = process.env.NODE_ENV === 'production'
+
+export default defaultTheme({
+  name: 'vuepress-theme-xray',
+  smoothScroll: true,
+  repo: 'xtls/xray-core',
+  docsDir: 'docs',
+  locales: {
+    '/': {
+      navbar: navbarZh,
+      sidebar: sidebarZh,
+      repoLabel: '查看源码',
+      editLinkText: '帮助我们改善此页面！',
+      tip: '提示',
+      warning: '注意',
+      danger: '警告',
+      lastUpdatedText: '最近更改',
+      selectLanguageName: '简体中文',
+      selectLanguageText: '多语言',
+      selectLanguageAriaLabel: '多语言',
+      docsDir: 'docs',
+      backToHome: 'back to home',
+      openInNewWindow: 'open in new tag',
+      toggleColorMode: 'toggle color mode',
+      toggleSidebar: 'toggle side bar',
+    },
+    '/en/': {
+      // TODO: translation
+      sidebar: sidebarEn,
+      navbar: navbarEn,
+      selectLanguageName: 'English (WIP)',
+      selectLanguageText: 'Multiple language',
+      selectLanguageAriaLabel: 'Multiple language',
+      editLinkText: 'Help us improve this page on GitHub！',
+      lastUpdatedText: 'Last Updated',
+      contributorsText: 'contributors',
+      // repoLabel: 'Source',
+      tip: 'Tip',
+      warning: 'Warning',
+      danger: 'Danger',
+
+      // 404 page
+      notFound: [
+        '这里什么都没有',
+        '我们怎么到这来了？',
+        '这是一个 404 页面',
+        '看起来我们进入了错误的链接',
+      ],
+      backToHome: 'back to home',
+      openInNewWindow: 'open in new tag',
+      toggleColorMode: 'toggle color mode',
+      toggleSidebar: 'toggle side bar',
+    },
+    docsRepo: 'xtls/Xray-docs-next',
+    docsBranch: 'main',
+    editLinks: true,
+    enableToggle: true,
+    smoothScroll: true,
+    // logo: '/logo.png',
+
+    // sidebar: 'auto',
+
+    themePlugins: {
+      git: isProduction,
+    },
+  },
+})