.storybook/main.ts

@@ -1,4 +1,16 @@
 import type { StorybookConfig } from '@storybook/svelte-vite';
+import {
+    dirname,
+    resolve,
+} from 'path';
+import { fileURLToPath } from 'url';
+import {
+    loadConfigFromFile,
+    mergeConfig,
+} from 'vite';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
 
 const config: StorybookConfig = {
     'stories': [
@@ -18,5 +30,17 @@ const config: StorybookConfig = {
         '@storybook/addon-docs',
     ],
     'framework': '@storybook/svelte-vite',
+    async viteFinal(config) {
+        // This attempts to find your actual vite.config.ts
+        const { config: userConfig } = await loadConfigFromFile(
+            { command: 'serve', mode: 'development' },
+            resolve(__dirname, '../vite.config.ts'),
+        ) || {};
+
+        return mergeConfig(config, {
+            // Merge only the resolve/alias parts if you want to be safe
+            resolve: userConfig?.resolve || {},
+        });
+    },
 };
 export default config;