diff --git a/code/lib/csf-plugin/package.json b/code/lib/csf-plugin/package.json
index 725feeba83b7..c3c9e45f60fe 100644
--- a/code/lib/csf-plugin/package.json
+++ b/code/lib/csf-plugin/package.json
@@ -22,15 +22,16 @@
   "sideEffects": false,
   "exports": {
     ".": {
-      "require": "./dist/cjs/index.js",
-      "import": "./dist/esm/index.mjs",
-      "types": "./dist/types/index.d.ts"
+      "node": "./dist/index.js",
+      "require": "./dist/index.js",
+      "import": "./dist/index.mjs",
+      "types": "./dist/index.d.ts"
     },
     "./package.json": "./package.json"
   },
-  "main": "dist/cjs/index.js",
-  "module": "dist/esm/index.js",
-  "types": "dist/types/index.d.ts",
+  "main": "dist/index.js",
+  "module": "dist/index.mjs",
+  "types": "dist/index.d.ts",
   "files": [
     "dist/**/*",
     "README.md",
@@ -39,7 +40,7 @@
   ],
   "scripts": {
     "check": "../../../scripts/node_modules/.bin/tsc --noEmit",
-    "prep": "node ../../../scripts/prepare.js"
+    "prep": "../../../scripts/prepare/bundle.ts"
   },
   "dependencies": {
     "@storybook/csf-tools": "7.0.0-beta.19",
@@ -54,7 +55,14 @@
   "bundler": {
     "entries": [
       "./src/index.ts"
-    ]
+    ],
+    "externals": [
+      "webpack",
+      "vite",
+      "rollup",
+      "esbuild"
+    ],
+    "platform": "node"
   },
   "gitHead": "da902f312eb354d20aa83bf0f0035b9744f93791"
 }
diff --git a/code/lib/csf-plugin/src/index.ts b/code/lib/csf-plugin/src/index.ts
index d75d169b9c96..397daf274aab 100644
--- a/code/lib/csf-plugin/src/index.ts
+++ b/code/lib/csf-plugin/src/index.ts
@@ -34,4 +34,7 @@ export const unplugin = createUnplugin<CsfPluginOptions>((options) => {
   };
 });
 
-export const { vite, rollup, webpack, esbuild } = unplugin;
+export const { esbuild } = unplugin;
+export const { webpack } = unplugin;
+export const { rollup } = unplugin;
+export const { vite } = unplugin;
diff --git a/scripts/prepare/bundle.ts b/scripts/prepare/bundle.ts
index 006688647985..bdff2cc6aeff 100755
--- a/scripts/prepare/bundle.ts
+++ b/scripts/prepare/bundle.ts
@@ -15,7 +15,7 @@ import { exec } from '../utils/exec';
 type Formats = 'esm' | 'cjs';
 type BundlerConfig = {
   entries: string[];
-  untypedEntries: string[];
+  externals: string[];
   platform: Options['platform'];
   pre: string;
   post: string;
@@ -33,7 +33,14 @@ const run = async ({ cwd, flags }: { cwd: string; flags: string[] }) => {
     name,
     dependencies,
     peerDependencies,
-    bundler: { entries = [], untypedEntries = [], platform, pre, post, formats = ['esm', 'cjs'] },
+    bundler: {
+      entries = [],
+      externals: extraExternals = [],
+      platform,
+      pre,
+      post,
+      formats = ['esm', 'cjs'],
+    },
   } = (await fs.readJson(join(cwd, 'package.json'))) as PackageJsonWithBundlerConfig;
 
   if (pre) {
@@ -53,10 +60,11 @@ const run = async ({ cwd, flags }: { cwd: string; flags: string[] }) => {
   const outDir = join(process.cwd(), 'dist');
   const externals = [
     name,
+    ...extraExternals,
     ...Object.keys(dependencies || {}),
     ...Object.keys(peerDependencies || {}),
   ];
-  const allEntries = [...entries, ...untypedEntries].map((e: string) => slash(join(cwd, e)));
+  const allEntries = entries.map((e: string) => slash(join(cwd, e)));
 
   const { dtsBuild, dtsConfig, tsConfigExists } = await getDTSConfigs({
     formats,