fix build

package.json

@@ -4,8 +4,8 @@
   "type": "module",
   "scripts": {
     "dev": "vite demo",
-    "build": "vite build demo --base=/folk-canvas",
-    "preview": "vite build demo && vite preview demo"
+    "build": "vite build . --base=/folk-canvas",
+    "preview": "vite build . && vite preview ."
   },
   "dependencies": {
     "@types/leaflet": "^1.9.14",

vite.config.ts

@@ -3,6 +3,7 @@ import { readdirSync } from 'node:fs';
 import { defineConfig, IndexHtmlTransformContext, Plugin } from 'vite';
 
 const demoDir = resolve(__dirname, 'demo');
+
 const files: string[] = readdirSync(demoDir).filter((file) => file.endsWith('.html'));
 
 const input: Record<string, string> = files.reduce((acc, file) => {