diff --git a/HACK__patch_vite.ts b/HACK__patch_vite.ts
deleted file mode 100644
index 54a58e8..0000000
--- a/HACK__patch_vite.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-// Vite internals ensure ssr builds use CommonJS. Deno needs ES Modules. Here we are.
-const FILE_TO_CHANGE = "./node_modules/vite/dist/node/chunks/dep-f5552faa.js"
-const replaceFrom = "format: ssr ? 'cjs' : 'es',"
-const replaceTo = "format: 'es',"
-const depsFileContent = await Deno.readTextFile(FILE_TO_CHANGE);
-Deno.writeTextFile(
-  FILE_TO_CHANGE,
-  depsFileContent.replace(replaceFrom, replaceTo),
-)
-console.log (`Finished applying vite ES module hack in ${FILE_TO_CHANGE}.`)
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 80feff0..d8923e9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6,7 +6,6 @@
   "packages": {
     "": {
       "version": "0.0.1",
-      "hasInstallScript": true,
       "license": "MIT",
       "devDependencies": {
         "@builder.io/qwik": "0.0.16-10",
diff --git a/package.json b/package.json
index 017a8e5..35a2c17 100644
--- a/package.json
+++ b/package.json
@@ -10,8 +10,7 @@
     "fmt": "prettier --write .",
     "fmt.check": "prettier --check .",
     "serve": "denon start",
-    "start": "npm run dev",
-    "postinstall": "deno run --allow-read --allow-write HACK__patch_vite.ts"
+    "start": "npm run dev"
   },
   "devDependencies": {
     "@builder.io/qwik": "0.0.16-10",
diff --git a/vite.config.js b/vite.config.js
index f775829..a904e5a 100644
--- a/vite.config.js
+++ b/vite.config.js
@@ -10,6 +10,7 @@ export default defineConfig({
   build: {
     rollupOptions: {
       output: {
+        'format': isServerBuild ? 'esm' : undefined,
         chunkFileNames: 'q-[hash].js',
         assetFileNames: 'q-[hash].[ext]',
       },