Add static_ field

valuescript_vm/src/builtins/error_builtin.rs

@@ -42,6 +42,7 @@ impl BuiltinObject for ErrorBuiltin {
     Some(Rc::new(VsClass {
       constructor: SET_MESSAGE.to_val(),
       prototype: make_error_prototype(),
+      static_: VsObject::default().to_val(),
     }))
   }
 }

valuescript_vm/src/builtins/range_error_builtin.rs

@@ -33,6 +33,7 @@ impl BuiltinObject for RangeErrorBuiltin {
     Some(Rc::new(VsClass {
       constructor: Val::Static(&SET_MESSAGE),
       prototype: make_range_error_prototype(),
+      static_: VsObject::default().to_val(),
     }))
   }
 }

valuescript_vm/src/builtins/type_error_builtin.rs

@@ -41,6 +41,7 @@ impl BuiltinObject for TypeErrorBuiltin {
     Some(Rc::new(VsClass {
       constructor: Val::Static(&SET_MESSAGE),
       prototype: make_type_error_prototype(),
+      static_: VsObject::default().to_val(),
     }))
   }
 }