diff --git a/ucl/builtins.go b/ucl/builtins.go
index 71bad9b..ddb065a 100644
--- a/ucl/builtins.go
+++ b/ucl/builtins.go
@@ -690,7 +690,7 @@ func filterBuiltin(ctx context.Context, args invocationArgs) (Object, error) {
 		}
 		return &newList, nil
 	case Hashable:
-		newHash := hashObject{}
+		newHash := HashObject{}
 		if err := t.Each(func(k string, v Object) error {
 			if m, err := inv.invoke(ctx, args.fork([]Object{StringObject(k), v})); err != nil {
 				return err
diff --git a/ucl/eval.go b/ucl/eval.go
index ce10b11..b2edca2 100644
--- a/ucl/eval.go
+++ b/ucl/eval.go
@@ -294,11 +294,11 @@ func (e evaluator) evalListOrHash(ctx context.Context, ec *evalCtx, loh *astList
 	if loh.EmptyList {
 		return &ListObject{}, nil
 	} else if loh.EmptyHash {
-		return hashObject{}, nil
+		return HashObject{}, nil
 	}
 
 	if firstIsHash := loh.Elements[0].Right != nil; firstIsHash {
-		h := hashObject{}
+		h := HashObject{}
 		for _, el := range loh.Elements {
 			if el.Right == nil {
 				return nil, errors.New("miss-match of lists and hash")
diff --git a/ucl/objs.go b/ucl/objs.go
index 0ec03b1..816bbaf 100644
--- a/ucl/objs.go
+++ b/ucl/objs.go
@@ -98,33 +98,6 @@ func (ss StringListObject) Index(i int) Object {
 	return StringObject(ss[i])
 }
 
-type HashObject map[string]Object
-
-func (ho HashObject) String() string {
-	return fmt.Sprintf("%v", ho)
-}
-
-func (ho HashObject) Truthy() bool {
-	return len(ho) > 0
-}
-
-func (ho HashObject) Len() int {
-	return len(ho)
-}
-
-func (ho HashObject) Value(k string) Object {
-	return ho[k]
-}
-
-func (ho HashObject) Each(fn func(k string, v Object) error) error {
-	for k, v := range ho {
-		if err := fn(k, v); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
 type iteratorObject struct {
 	Iterable
 }
@@ -137,9 +110,9 @@ func (i iteratorObject) Truthy() bool {
 	return i.Iterable.HasNext()
 }
 
-type hashObject map[string]Object
+type HashObject map[string]Object
 
-func (s hashObject) String() string {
+func (s HashObject) String() string {
 	if len(s) == 0 {
 		return "[:]"
 	}
@@ -158,19 +131,19 @@ func (s hashObject) String() string {
 	return sb.String()
 }
 
-func (s hashObject) Truthy() bool {
+func (s HashObject) Truthy() bool {
 	return len(s) > 0
 }
 
-func (s hashObject) Len() int {
+func (s HashObject) Len() int {
 	return len(s)
 }
 
-func (s hashObject) Value(k string) Object {
+func (s HashObject) Value(k string) Object {
 	return s[k]
 }
 
-func (s hashObject) Each(fn func(k string, v Object) error) error {
+func (s HashObject) Each(fn func(k string, v Object) error) error {
 	for k, v := range s {
 		if err := fn(k, v); err != nil {
 			return err
@@ -246,7 +219,7 @@ func toGoValue(obj Object) (interface{}, bool) {
 			xs = append(xs, x)
 		}
 		return xs, true
-	case hashObject:
+	case HashObject:
 		xs := make(map[string]interface{})
 		for k, va := range v {
 			x, ok := toGoValue(va)