feat: add vue-template-tolerant plugin for error handling in translation pages

- Implemented a new Vite plugin that detects HTML errors in Vue translation pages and logs detailed error messages to the console.
- The plugin replaces the content of pages with a placeholder if errors are found, improving the robustness of the translation process.
- Integrated the plugin into the Vite bundler configuration for enhanced localization support.

docs/.vuepress/config.ts

@@ -9,11 +9,70 @@ import { shikiPlugin } from '@vuepress/plugin-shiki'
 import { defaultTheme } from '@vuepress/theme-default'
 import { defineUserConfig } from 'vuepress'
 
+import type { Plugin } from 'vite'
+
 import { headConfig } from './configs/head.js'
 import { mainConfig, defaultThemeConfig } from './configs/locales_config.js'
 
 const isProd = process.env.NODE_ENV === 'production'
 
+function vueTemplateTolerantPlugin(): Plugin {
+  let compilerSfc: typeof import('@vue/compiler-sfc') | undefined
+  return {
+    name: 'vue-template-tolerant',
+    enforce: 'pre',
+    async transform(code, id) {
+      if (!id.endsWith('.html.vue') || !id.includes('/l10n/')) return
+      compilerSfc ??= await import('@vue/compiler-sfc')
+      const { errors } = compilerSfc.parse(code, { filename: id })
+      if (errors.length === 0) return
+
+      const lines = code.split('\n')
+      const mdPath = id
+        .replace(/\.vuepress\/\.temp\/pages\//, '')
+        .replace(/\.html\.vue$/, '.md')
+
+      const yellow = '\x1b[33m'
+      const red = '\x1b[31m'
+      const dim = '\x1b[2m'
+      const cyan = '\x1b[36m'
+      const reset = '\x1b[0m'
+
+      let output = `${yellow}[vue-template-tolerant]${reset} ${errors.length} error(s) in translation page (replaced with placeholder)\n`
+      output += `  ${dim}source:${reset} ${cyan}${mdPath}${reset}\n`
+
+      for (const err of errors as any[]) {
+        const msg = err.message ?? String(err)
+        const loc = err.loc as { start: { line: number; column: number }; end: { line: number; column: number }; source?: string } | undefined
+        if (loc) {
+          output += `\n  ${red}error${reset} ${msg}\n`
+          output += `  ${dim}at ${id}:${loc.start.line}:${loc.start.column}${reset}\n`
+          const startLine = Math.max(0, loc.start.line - 3)
+          const endLine = Math.min(lines.length, loc.start.line + 2)
+          for (let i = startLine; i < endLine; i++) {
+            const lineNum = String(i + 1).padStart(5)
+            const marker = i + 1 === loc.start.line ? `${red}>${reset}` : ' '
+            const lineContent = lines[i].length > 200 ? lines[i].slice(0, 200) + '...' : lines[i]
+            output += `  ${marker} ${dim}${lineNum}${reset} | ${lineContent}\n`
+            if (i + 1 === loc.start.line) {
+              const col = loc.start.column
+              output += `    ${' '.repeat(5)} | ${' '.repeat(col)}${red}^${reset}\n`
+            }
+          }
+        } else {
+          output += `\n  ${red}error${reset} ${msg}\n`
+        }
+      }
+
+      console.warn(output)
+      return {
+        code: '<template><div><p>This page has HTML errors in its translation source and could not be rendered.</p></div></template>',
+        map: null,
+      }
+    },
+  }
+}
+
 export default defineUserConfig({
   // set site base to default value
   base: '/',
@@ -25,7 +84,14 @@ export default defineUserConfig({
   locales: mainConfig,
 
   // specify bundler via environment variable
-  bundler: process.env.DOCS_BUNDLER === 'webpack' ? webpackBundler() : viteBundler(),
+  bundler:
+    process.env.DOCS_BUNDLER === 'webpack'
+      ? webpackBundler()
+      : viteBundler({
+          viteOptions: {
+            plugins: [vueTemplateTolerantPlugin()],
+          },
+        }),
 
   // configure default theme
   theme: defaultTheme({