diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 3ba70d0..66893d2 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -46,11 +46,11 @@ jobs:
           moonrun --version
 
       - name: moon check
-        run: moon check --deny-warn
+        run: moon check --deny-warn --target=js
 
       - name: moon info and moon fmt
         run: |
-          moon info
+          moon info --target=js
           moon fmt
           git diff --exit-code
 
diff --git a/moon.mod.json b/moon.mod.json
index ea7f4e7..6edd1f9 100644
--- a/moon.mod.json
+++ b/moon.mod.json
@@ -1,6 +1,6 @@
 {
   "name": "rami3l/js-ffi",
-  "version": "0.2.2",
+  "version": "0.2.3",
   "readme": "README.md",
   "repository": "",
   "license": "Apache-2.0",
diff --git a/src/js/js.mbti b/src/js/js.mbti
index 8b3abac..5ab1fcd 100644
--- a/src/js/js.mbti
+++ b/src/js/js.mbti
@@ -1,4 +1,4 @@
-package rami3l/js-ffi/js
+package "rami3l/js-ffi/js"
 
 // Values
 fn async_all[T](Array[() -> T!]) -> Array[T]!
@@ -82,6 +82,7 @@ impl Object {
   new() -> Self
   op_get[K, V](Self, K) -> V
   op_set[K, V](Self, K, V) -> Unit
+  to_value(Self) -> Value
 }
 
 type Optional[_]
diff --git a/src/js/object.mbt b/src/js/object.mbt
index cf83c2b..83062bc 100644
--- a/src/js/object.mbt
+++ b/src/js/object.mbt
@@ -9,6 +9,11 @@ pub fn Object::from_value_unchecked(value : Value) -> Object {
   value
 }
 
+///|
+pub fn Object::to_value(self : Object) -> Value {
+  self._
+}
+
 ///|
 pub extern "js" fn Object::from_value(value : Value) -> Optional[Object] =
   #| (value) => (value) instanceof Object ? value : undefined
diff --git a/src/js/object_test.mbt b/src/js/object_test.mbt
index e83573a..94b16bd 100644
--- a/src/js/object_test.mbt
+++ b/src/js/object_test.mbt
@@ -1,7 +1,11 @@
 ///|
 test "Object::extend_object" {
-  let obj = @js.Object(@json.from_json!({ "a": 1, "b": 2, "c": 3 }))
-  let obj1 = @js.Object(@json.from_json!({ "b": [6, 7], "d": 44, "a": 55 }))
+  let obj = @js.Object::from_value_unchecked(
+    @json.from_json!({ "a": 1, "b": 2, "c": 3 }),
+  )
+  let obj1 = @js.Object::from_value_unchecked(
+    @json.from_json!({ "b": [6, 7], "d": 44, "a": 55 }),
+  )
   @json.inspect!(obj.extend_object(obj1)._.to_json!(), content={
     "a": 55,
     "b": [6, 7],