diff --git a/vite.config.ts b/vite.config.ts
index 0430ef8..b3b5c69 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -12,12 +12,23 @@ export default defineConfig({
     electron({
       main: {
         entry: 'electron-main/index.ts',
+        vite: {
+          build: {
+            sourcemap: false,
+          },
+        },
       },
       preload: {
         input: {
           // You can configure multiple preload here
-          p1: join(__dirname, 'electron-preload'),
+          splash: join(__dirname, 'electron-preload/splash.ts'),
         },
+        vite: {
+          build: {
+            // For debug
+            sourcemap: 'inline',
+          }
+        }
       },
     }),
     // Enable use Electron, Node.js API in Renderer-process
@@ -25,4 +36,8 @@ export default defineConfig({
     // TODO: integrate into 'vite-plugin-electron' by default
     polyfillExports(),
   ],
+  build: {
+    // TODO: integrate into 'vite-plugin-electron' by default
+    emptyOutDir: false,
+  },
 })