diff --git a/src/index.d.ts b/src/index.d.ts
new file mode 100644
index 0000000..67e95a8
--- /dev/null
+++ b/src/index.d.ts
@@ -0,0 +1,5 @@
+declare module  './App.svelte' {}
+
+export {}
+
+export const NODE_ENV: string
\ No newline at end of file
diff --git a/src/main.ts b/src/main.ts
index ffb493b..a1647e9 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -3,6 +3,12 @@ import '@fontsource-variable/red-hat-display';
 
 import './lib/global_styles.scss';
 
+// disable left click
+console.log(NODE_ENV)
+if (NODE_ENV !== 'development') {
+    document.addEventListener('contextmenu', event => event.preventDefault());
+}
+
 const app = new App({
     target: document.getElementById("app"),
 });
diff --git a/vite.config.ts b/vite.config.ts
index c25a7eb..00e3d9e 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -13,6 +13,9 @@ export default defineConfig(async () => ({
       ],
     }),
   ],
+  define: {
+    NODE_ENV: JSON.stringify(process.env.NODE_ENV)
+  },
 
   // Vite options tailored for Tauri development and only applied in `tauri dev` or `tauri build`
   // prevent vite from obscuring rust errors