fix: unwrap iife for hermes optimization

- in local scope(iife), poor performance on hermes runtime
- remove iife for modules initialize on global scope
  - change esbuild bundle format iife to esm for remove iife

close #5

packages/config/lib/transformers/esbuild.ts

@@ -48,7 +48,7 @@ export function getEsbuildOptions(
        */
       'for-of': false,
     },
-    format: 'iife',
+    format: 'esm',
     bundle: true,
     sourcemap: true,
     minify,