feat: support esm ssr build

.gitignore

@@ -6,6 +6,7 @@
 .idea
 .vite_opt_cache
 .vscode
+.temp
 dist
 node_modules
 pnpm-global

src/node/build/bundle.ts

@@ -54,7 +54,10 @@ export async function bundle(
     ),
     // @ts-ignore
     ssr: {
-      noExternal: ['vitepress']
+      noExternal: [
+        'vitepress',
+        '@docsearch/css'
+      ]
     },
     build: {
       ...options,

src/node/build/render.ts

@@ -20,9 +20,12 @@ export async function renderPage(
   pageToHashMap: Record<string, string>,
   hashMapString: string
 ) {
-  const { createApp } = await import(
+  const entryPath = [
-    pathToFileURL(path.join(config.tempDir, `app.js`)).toString()
+    path.join(config.tempDir, `app.mjs`),
-  )
+    path.join(config.tempDir, `app.js`)
+  ].find((i) => fs.existsSync(i))!
+
+  const { createApp } = await import(pathToFileURL(entryPath).toString())
   const { app, router } = createApp()
   const routePath = `/${page.replace(/\.md$/, '')}`
   const siteData = resolveSiteDataByRoute(config.site, routePath)