1 files changed, 13 insertions, 3 deletions
diff --git a/packages/renderers/renderer-preact/index.js b/packages/renderers/renderer-preact/index.js
index 68e79dcc6..a1a21a561 100644
--- a/packages/renderers/renderer-preact/index.js
+++ b/packages/renderers/renderer-preact/index.js
@@ -1,8 +1,7 @@
 export default {
   name: '@astrojs/renderer-preact',
-  client: './client',
-  server: './server',
-  knownEntrypoints: ['preact', 'preact/jsx-runtime', 'preact-render-to-string'],
+  client: './client.js',
+  server: './server.js',
   jsxImportSource: 'preact',
   jsxTransformOptions: async () => {
     const {
@@ -12,4 +11,15 @@ export default {
       plugins: [jsx({}, { runtime: 'automatic', importSource: 'preact' })],
     };
   },
+  viteConfig() {
+    return {
+      optimizeDeps: {
+        include: ['@astrojs/renderer-preact/client.js', 'preact', 'preact/jsx-runtime', 'preact-render-to-string'],
+        exclude: ['@astrojs/renderer-preact/server.js'],
+      },
+      ssr: {
+        external: ['preact-render-to-string'],
+      },
+    };
+  },
 };