diff --git a/TODO.md b/TODO.md
index 75a811d..e792242 100644
--- a/TODO.md
+++ b/TODO.md
@@ -13,3 +13,5 @@
 - (?) move-only value type support
 - (?) type names
 - (?) properties
+
+(???) Why does local scope have a name?
diff --git a/headers/meta.hpp/meta_binds.hpp b/headers/meta.hpp/meta_binds.hpp
index 1ccebba..0ad21b2 100644
--- a/headers/meta.hpp/meta_binds.hpp
+++ b/headers/meta.hpp/meta_binds.hpp
@@ -39,10 +39,6 @@ namespace meta_hpp::detail
 
 namespace meta_hpp
 {
-    struct type_opts final {
-        metadata_map metadata{};
-    };
-
     struct argument_opts final {
         std::string name{};
         metadata_map metadata{};
@@ -75,10 +71,6 @@ namespace meta_hpp
         metadata_map metadata{};
     };
 
-    struct scope_opts final {
-        metadata_map metadata{};
-    };
-
     struct variable_opts final {
         metadata_map metadata{};
     };
@@ -89,7 +81,7 @@ namespace meta_hpp
     template < detail::array_kind Array >
     class array_bind final {
     public:
-        explicit array_bind(type_opts opts);
+        explicit array_bind(metadata_map metadata);
         operator array_type() const noexcept;
     private:
         detail::array_type_data_ptr data_;
@@ -101,7 +93,7 @@ namespace meta_hpp
     template < detail::class_kind Class >
     class class_bind final {
     public:
-        explicit class_bind(type_opts opts);
+        explicit class_bind(metadata_map metadata);
         operator class_type() const noexcept;
 
         // constructor_
@@ -228,7 +220,7 @@ namespace meta_hpp
     template < detail::enum_kind Enum >
     class enum_bind final {
     public:
-        explicit enum_bind(type_opts opts);
+        explicit enum_bind(metadata_map metadata);
         operator enum_type() const noexcept;
 
         enum_bind& evalue_(std::string name, Enum value);
@@ -243,7 +235,7 @@ namespace meta_hpp
     template < detail::function_kind Function >
     class function_bind final {
     public:
-        explicit function_bind(type_opts opts);
+        explicit function_bind(metadata_map metadata);
         operator function_type() const noexcept;
     private:
         detail::function_type_data_ptr data_;
@@ -255,7 +247,7 @@ namespace meta_hpp
     template < detail::member_kind Member >
     class member_bind final {
     public:
-        explicit member_bind(type_opts opts);
+        explicit member_bind(metadata_map metadata);
         operator member_type() const noexcept;
     private:
         detail::member_type_data_ptr data_;
@@ -267,7 +259,7 @@ namespace meta_hpp
     template < detail::method_kind Method >
     class method_bind final {
     public:
-        explicit method_bind(type_opts opts);
+        explicit method_bind(metadata_map metadata);
         operator method_type() const noexcept;
     private:
         detail::method_type_data_ptr data_;
@@ -279,7 +271,7 @@ namespace meta_hpp
     template < detail::nullptr_kind Nullptr >
     class nullptr_bind final {
     public:
-        explicit nullptr_bind(type_opts opts);
+        explicit nullptr_bind(metadata_map metadata);
         operator nullptr_type() const noexcept;
     private:
         detail::nullptr_type_data_ptr data_;
@@ -291,7 +283,7 @@ namespace meta_hpp
     template < detail::number_kind Number >
     class number_bind final {
     public:
-        explicit number_bind(type_opts opts);
+        explicit number_bind(metadata_map metadata);
         operator number_type() const noexcept;
     private:
         detail::number_type_data_ptr data_;
@@ -303,7 +295,7 @@ namespace meta_hpp
     template < detail::pointer_kind Pointer >
     class pointer_bind final {
     public:
-        explicit pointer_bind(type_opts opts);
+        explicit pointer_bind(metadata_map metadata);
         operator pointer_type() const noexcept;
     private:
         detail::pointer_type_data_ptr data_;
@@ -315,7 +307,7 @@ namespace meta_hpp
     template < detail::reference_kind Reference >
     class reference_bind final {
     public:
-        explicit reference_bind(type_opts opts);
+        explicit reference_bind(metadata_map metadata);
         operator reference_type() const noexcept;
     private:
         detail::reference_type_data_ptr data_;
@@ -327,7 +319,7 @@ namespace meta_hpp
     template < detail::void_kind Void >
     class void_bind final {
     public:
-        explicit void_bind(type_opts opts);
+        explicit void_bind(metadata_map metadata);
         operator void_type() const noexcept;
     private:
         detail::void_type_data_ptr data_;
@@ -341,8 +333,8 @@ namespace meta_hpp
         struct local_tag {};
         struct static_tag {};
 
-        explicit scope_bind(std::string name, scope_opts opts, local_tag);
-        explicit scope_bind(std::string_view name, scope_opts opts, static_tag);
+        explicit scope_bind(std::string name, metadata_map metadata, local_tag);
+        explicit scope_bind(std::string_view name, metadata_map metadata, static_tag);
         operator scope() const noexcept;
 
         template < detail::class_kind Class >
@@ -400,68 +392,68 @@ namespace meta_hpp
 namespace meta_hpp
 {
     template < detail::array_kind Array >
-    array_bind<Array> array_(type_opts opts = {}) {
-        return array_bind<Array>{std::move(opts)};
+    array_bind<Array> array_(metadata_map metadata = {}) {
+        return array_bind<Array>{std::move(metadata)};
     }
 
     template < detail::class_kind Class >
-    class_bind<Class> class_(type_opts opts = {}) {
-        return class_bind<Class>{std::move(opts)};
+    class_bind<Class> class_(metadata_map metadata = {}) {
+        return class_bind<Class>{std::move(metadata)};
     }
 
     template < detail::enum_kind Enum >
-    enum_bind<Enum> enum_(type_opts opts = {}) {
-        return enum_bind<Enum>{std::move(opts)};
+    enum_bind<Enum> enum_(metadata_map metadata = {}) {
+        return enum_bind<Enum>{std::move(metadata)};
     }
 
     template < detail::function_kind Function >
-    function_bind<Function> function_(type_opts opts = {}) {
-        return function_bind<Function>{std::move(opts)};
+    function_bind<Function> function_(metadata_map metadata = {}) {
+        return function_bind<Function>{std::move(metadata)};
     }
 
     template < detail::member_kind Member >
-    member_bind<Member> member_(type_opts opts = {}) {
-        return member_bind<Member>{std::move(opts)};
+    member_bind<Member> member_(metadata_map metadata = {}) {
+        return member_bind<Member>{std::move(metadata)};
     }
 
     template < detail::method_kind Method >
-    method_bind<Method> method_(type_opts opts = {}) {
-        return method_bind<Method>{std::move(opts)};
+    method_bind<Method> method_(metadata_map metadata = {}) {
+        return method_bind<Method>{std::move(metadata)};
     }
 
     template < detail::nullptr_kind Nullptr >
-    nullptr_bind<Nullptr> nullptr_(type_opts opts = {}) {
-        return nullptr_bind<Nullptr>{std::move(opts)};
+    nullptr_bind<Nullptr> nullptr_(metadata_map metadata = {}) {
+        return nullptr_bind<Nullptr>{std::move(metadata)};
     }
 
     template < detail::number_kind Number >
-    number_bind<Number> number_(type_opts opts = {}) {
-        return number_bind<Number>{std::move(opts)};
+    number_bind<Number> number_(metadata_map metadata = {}) {
+        return number_bind<Number>{std::move(metadata)};
     }
 
     template < detail::pointer_kind Pointer >
-    pointer_bind<Pointer> pointer_(type_opts opts = {}) {
-        return pointer_bind<Pointer>{std::move(opts)};
+    pointer_bind<Pointer> pointer_(metadata_map metadata = {}) {
+        return pointer_bind<Pointer>{std::move(metadata)};
     }
 
     template < detail::reference_kind Reference >
-    reference_bind<Reference> reference_(type_opts opts = {}) {
-        return reference_bind<Reference>{std::move(opts)};
+    reference_bind<Reference> reference_(metadata_map metadata = {}) {
+        return reference_bind<Reference>{std::move(metadata)};
     }
 
     template < detail::void_kind Void >
-    void_bind<Void> void_(type_opts opts = {}) {
-        return void_bind<Void>{std::move(opts)};
+    void_bind<Void> void_(metadata_map metadata = {}) {
+        return void_bind<Void>{std::move(metadata)};
     }
 }
 
 namespace meta_hpp
 {
-    inline scope_bind local_scope_(std::string name, scope_opts opts = {}) {
-        return scope_bind{std::move(name), std::move(opts), scope_bind::local_tag()};
+    inline scope_bind local_scope_(std::string name, metadata_map metadata = {}) {
+        return scope_bind{std::move(name), std::move(metadata), scope_bind::local_tag()};
     }
 
-    inline scope_bind static_scope_(std::string_view name, scope_opts opts = {}) {
-        return scope_bind{name, std::move(opts), scope_bind::static_tag()};
+    inline scope_bind static_scope_(std::string_view name, metadata_map metadata = {}) {
+        return scope_bind{name, std::move(metadata), scope_bind::static_tag()};
     }
 }
diff --git a/headers/meta.hpp/meta_binds/array_bind.hpp b/headers/meta.hpp/meta_binds/array_bind.hpp
index d7277e9..1985278 100644
--- a/headers/meta.hpp/meta_binds/array_bind.hpp
+++ b/headers/meta.hpp/meta_binds/array_bind.hpp
@@ -14,10 +14,10 @@
 namespace meta_hpp
 {
     template < detail::array_kind Array >
-    array_bind<Array>::array_bind(type_opts opts)
+    array_bind<Array>::array_bind(metadata_map metadata)
     : data_{detail::type_access(detail::resolve_type<Array>())} {
-        data_->metadata.swap(opts.metadata);
-        data_->metadata.merge(opts.metadata);
+        data_->metadata.swap(metadata);
+        data_->metadata.merge(metadata);
     }
 
     template < detail::array_kind Array >
diff --git a/headers/meta.hpp/meta_binds/class_bind.hpp b/headers/meta.hpp/meta_binds/class_bind.hpp
index 9038360..6a7b37a 100644
--- a/headers/meta.hpp/meta_binds/class_bind.hpp
+++ b/headers/meta.hpp/meta_binds/class_bind.hpp
@@ -14,10 +14,10 @@
 namespace meta_hpp
 {
     template < detail::class_kind Class >
-    class_bind<Class>::class_bind(type_opts opts)
+    class_bind<Class>::class_bind(metadata_map metadata)
     : data_{detail::type_access(detail::resolve_type<Class>())} {
-        data_->metadata.swap(opts.metadata);
-        data_->metadata.merge(opts.metadata);
+        data_->metadata.swap(metadata);
+        data_->metadata.merge(metadata);
     }
 
     template < detail::class_kind Class >
diff --git a/headers/meta.hpp/meta_binds/enum_bind.hpp b/headers/meta.hpp/meta_binds/enum_bind.hpp
index 5c19926..d44512b 100644
--- a/headers/meta.hpp/meta_binds/enum_bind.hpp
+++ b/headers/meta.hpp/meta_binds/enum_bind.hpp
@@ -14,10 +14,10 @@
 namespace meta_hpp
 {
     template < detail::enum_kind Enum >
-    enum_bind<Enum>::enum_bind(type_opts opts)
+    enum_bind<Enum>::enum_bind(metadata_map metadata)
     : data_{detail::type_access(detail::resolve_type<Enum>())} {
-        data_->metadata.swap(opts.metadata);
-        data_->metadata.merge(opts.metadata);
+        data_->metadata.swap(metadata);
+        data_->metadata.merge(metadata);
     }
 
     template < detail::enum_kind Enum >
diff --git a/headers/meta.hpp/meta_binds/function_bind.hpp b/headers/meta.hpp/meta_binds/function_bind.hpp
index 45424f1..0c1634e 100644
--- a/headers/meta.hpp/meta_binds/function_bind.hpp
+++ b/headers/meta.hpp/meta_binds/function_bind.hpp
@@ -14,10 +14,10 @@
 namespace meta_hpp
 {
     template < detail::function_kind Function >
-    function_bind<Function>::function_bind(type_opts opts)
+    function_bind<Function>::function_bind(metadata_map metadata)
     : data_{detail::type_access(detail::resolve_type<Function>())} {
-        data_->metadata.swap(opts.metadata);
-        data_->metadata.merge(opts.metadata);
+        data_->metadata.swap(metadata);
+        data_->metadata.merge(metadata);
     }
 
     template < detail::function_kind Function >
diff --git a/headers/meta.hpp/meta_binds/member_bind.hpp b/headers/meta.hpp/meta_binds/member_bind.hpp
index c1636ec..4bd30d5 100644
--- a/headers/meta.hpp/meta_binds/member_bind.hpp
+++ b/headers/meta.hpp/meta_binds/member_bind.hpp
@@ -14,10 +14,10 @@
 namespace meta_hpp
 {
     template < detail::member_kind Member >
-    member_bind<Member>::member_bind(type_opts opts)
+    member_bind<Member>::member_bind(metadata_map metadata)
     : data_{detail::type_access(detail::resolve_type<Member>())} {
-        data_->metadata.swap(opts.metadata);
-        data_->metadata.merge(opts.metadata);
+        data_->metadata.swap(metadata);
+        data_->metadata.merge(metadata);
     }
 
     template < detail::member_kind Member >
diff --git a/headers/meta.hpp/meta_binds/method_bind.hpp b/headers/meta.hpp/meta_binds/method_bind.hpp
index b860973..05651d1 100644
--- a/headers/meta.hpp/meta_binds/method_bind.hpp
+++ b/headers/meta.hpp/meta_binds/method_bind.hpp
@@ -14,10 +14,10 @@
 namespace meta_hpp
 {
     template < detail::method_kind Method >
-    method_bind<Method>::method_bind(type_opts opts)
+    method_bind<Method>::method_bind(metadata_map metadata)
     : data_{detail::type_access(detail::resolve_type<Method>())} {
-        data_->metadata.swap(opts.metadata);
-        data_->metadata.merge(opts.metadata);
+        data_->metadata.swap(metadata);
+        data_->metadata.merge(metadata);
     }
 
     template < detail::method_kind Method >
diff --git a/headers/meta.hpp/meta_binds/nullptr_bind.hpp b/headers/meta.hpp/meta_binds/nullptr_bind.hpp
index daa79e9..4b53d3e 100644
--- a/headers/meta.hpp/meta_binds/nullptr_bind.hpp
+++ b/headers/meta.hpp/meta_binds/nullptr_bind.hpp
@@ -14,10 +14,10 @@
 namespace meta_hpp
 {
     template < detail::nullptr_kind Nullptr >
-    nullptr_bind<Nullptr>::nullptr_bind(type_opts opts)
+    nullptr_bind<Nullptr>::nullptr_bind(metadata_map metadata)
     : data_{detail::type_access(detail::resolve_type<Nullptr>())} {
-        data_->metadata.swap(opts.metadata);
-        data_->metadata.merge(opts.metadata);
+        data_->metadata.swap(metadata);
+        data_->metadata.merge(metadata);
     }
 
     template < detail::nullptr_kind Nullptr >
diff --git a/headers/meta.hpp/meta_binds/number_bind.hpp b/headers/meta.hpp/meta_binds/number_bind.hpp
index 3a0c83f..fff3f19 100644
--- a/headers/meta.hpp/meta_binds/number_bind.hpp
+++ b/headers/meta.hpp/meta_binds/number_bind.hpp
@@ -14,10 +14,10 @@
 namespace meta_hpp
 {
     template < detail::number_kind Number >
-    number_bind<Number>::number_bind(type_opts opts)
+    number_bind<Number>::number_bind(metadata_map metadata)
     : data_{detail::type_access(detail::resolve_type<Number>())} {
-        data_->metadata.swap(opts.metadata);
-        data_->metadata.merge(opts.metadata);
+        data_->metadata.swap(metadata);
+        data_->metadata.merge(metadata);
     }
 
     template < detail::number_kind Number >
diff --git a/headers/meta.hpp/meta_binds/pointer_bind.hpp b/headers/meta.hpp/meta_binds/pointer_bind.hpp
index bef44f3..1be0b01 100644
--- a/headers/meta.hpp/meta_binds/pointer_bind.hpp
+++ b/headers/meta.hpp/meta_binds/pointer_bind.hpp
@@ -14,10 +14,10 @@
 namespace meta_hpp
 {
     template < detail::pointer_kind Pointer >
-    pointer_bind<Pointer>::pointer_bind(type_opts opts)
+    pointer_bind<Pointer>::pointer_bind(metadata_map metadata)
     : data_{detail::type_access(detail::resolve_type<Pointer>())} {
-        data_->metadata.swap(opts.metadata);
-        data_->metadata.merge(opts.metadata);
+        data_->metadata.swap(metadata);
+        data_->metadata.merge(metadata);
     }
 
     template < detail::pointer_kind Pointer >
diff --git a/headers/meta.hpp/meta_binds/reference_bind.hpp b/headers/meta.hpp/meta_binds/reference_bind.hpp
index 9511984..1ed1235 100644
--- a/headers/meta.hpp/meta_binds/reference_bind.hpp
+++ b/headers/meta.hpp/meta_binds/reference_bind.hpp
@@ -14,10 +14,10 @@
 namespace meta_hpp
 {
     template < detail::reference_kind Reference >
-    reference_bind<Reference>::reference_bind(type_opts opts)
+    reference_bind<Reference>::reference_bind(metadata_map metadata)
     : data_{detail::type_access(detail::resolve_type<Reference>())} {
-        data_->metadata.swap(opts.metadata);
-        data_->metadata.merge(opts.metadata);
+        data_->metadata.swap(metadata);
+        data_->metadata.merge(metadata);
     }
 
     template < detail::reference_kind Reference >
diff --git a/headers/meta.hpp/meta_binds/scope_bind.hpp b/headers/meta.hpp/meta_binds/scope_bind.hpp
index 5ed613d..4f25d51 100644
--- a/headers/meta.hpp/meta_binds/scope_bind.hpp
+++ b/headers/meta.hpp/meta_binds/scope_bind.hpp
@@ -15,14 +15,14 @@
 namespace meta_hpp
 {
     // NOLINTNEXTLINE(readability-named-parameter)
-    inline scope_bind::scope_bind(std::string name, scope_opts opts, local_tag)
-    : state_{detail::scope_state::make(std::move(name), std::move(opts.metadata))} {}
+    inline scope_bind::scope_bind(std::string name, metadata_map metadata, local_tag)
+    : state_{detail::scope_state::make(std::move(name), std::move(metadata))} {}
 
     // NOLINTNEXTLINE(readability-named-parameter)
-    inline scope_bind::scope_bind(std::string_view name, scope_opts opts, static_tag)
+    inline scope_bind::scope_bind(std::string_view name, metadata_map metadata, static_tag)
     : state_{detail::state_access(detail::resolve_scope(name))} {
-        state_->metadata.swap(opts.metadata);
-        state_->metadata.merge(opts.metadata);
+        state_->metadata.swap(metadata);
+        state_->metadata.merge(metadata);
     }
 
     inline scope_bind::operator scope() const noexcept {
diff --git a/headers/meta.hpp/meta_binds/void_bind.hpp b/headers/meta.hpp/meta_binds/void_bind.hpp
index 17c7497..62fddb4 100644
--- a/headers/meta.hpp/meta_binds/void_bind.hpp
+++ b/headers/meta.hpp/meta_binds/void_bind.hpp
@@ -14,10 +14,10 @@
 namespace meta_hpp
 {
     template < detail::void_kind Void >
-    void_bind<Void>::void_bind(type_opts opts)
+    void_bind<Void>::void_bind(metadata_map metadata)
     : data_{detail::type_access(detail::resolve_type<void>())} {
-        data_->metadata.swap(opts.metadata);
-        data_->metadata.merge(opts.metadata);
+        data_->metadata.swap(metadata);
+        data_->metadata.merge(metadata);
     }
 
     template < detail::void_kind Void >
diff --git a/untests/meta_states/metadata_tests.cpp b/untests/meta_states/metadata_tests.cpp
index 04e59eb..34c55d8 100644
--- a/untests/meta_states/metadata_tests.cpp
+++ b/untests/meta_states/metadata_tests.cpp
@@ -38,10 +38,8 @@ TEST_CASE("meta/meta_states/metadata/enum") {
     using namespace std::string_literals;
 
     meta::enum_<color>({
-        .metadata{
-            {"desc1", meta::uvalue{"enum-desc1"s}},
-            {"desc2", meta::uvalue{"enum-desc2"s}},
-        }
+        {"desc1", meta::uvalue{"enum-desc1"s}},
+        {"desc2", meta::uvalue{"enum-desc2"s}},
     })
     .evalue_("red", color::red, {
         .metadata{{"desc1", meta::uvalue{"red-color"s}}}
@@ -56,10 +54,8 @@ TEST_CASE("meta/meta_states/metadata/enum") {
     // metadata override
 
     meta::enum_<color>({
-        .metadata{
-            {"desc2", meta::uvalue{"new-enum-desc2"s}},
-            {"desc3", meta::uvalue{"new-enum-desc3"s}},
-        }
+        {"desc2", meta::uvalue{"new-enum-desc2"s}},
+        {"desc3", meta::uvalue{"new-enum-desc3"s}},
     });
 
     meta::enum_<color>()
@@ -93,10 +89,8 @@ TEST_CASE("meta/meta_states/metadata/class") {
     using namespace std::string_literals;
 
     meta::class_<ivec2>({
-        .metadata{
-            {"desc1", meta::uvalue{"class-desc1"s}},
-            {"desc2", meta::uvalue{"class-desc2"s}},
-        },
+        {"desc1", meta::uvalue{"class-desc1"s}},
+        {"desc2", meta::uvalue{"class-desc2"s}},
     })
     .constructor_<int>({
         .arguments{{
@@ -142,10 +136,8 @@ TEST_CASE("meta/meta_states/metadata/class") {
     // metadata override
 
     meta::class_<ivec2>({
-        .metadata{
-            {"desc2", meta::uvalue{"new-class-desc2"s}},
-            {"desc3", meta::uvalue{"new-class-desc3"s}},
-        }
+        {"desc2", meta::uvalue{"new-class-desc2"s}},
+        {"desc3", meta::uvalue{"new-class-desc3"s}},
     });
 
     //
@@ -245,87 +237,88 @@ TEST_CASE("meta/meta_states/metadata/class") {
     }
 }
 
+TEST_CASE("meta/meta_states/metadata/scope") {
+    namespace meta = meta_hpp;
+    using namespace std::string_literals;
+
+    SUBCASE("local_scope") {
+        const meta::scope lscope = meta::local_scope_("local-scope", {
+            {"desc", meta::uvalue{"scope-desc"s}}
+        });
+        CHECK(lscope.get_metadata().at("desc") == "scope-desc"s);
+    }
+
+    SUBCASE("static_scope") {
+        meta::static_scope_("meta/meta_states/metadata/scope/static-scope", {
+            {"desc", meta::uvalue{"scope-desc"s}}
+        });
+        CHECK(meta::resolve_scope("meta/meta_states/metadata/scope/static-scope").get_metadata().at("desc") == "scope-desc"s);
+    }
+}
+
 TEST_CASE("meta/meta_states/metadata/other") {
     namespace meta = meta_hpp;
     using namespace std::string_literals;
 
     SUBCASE("array") {
         meta::array_<int[]>({
-            .metadata{
-                {"desc", meta::uvalue{"int[]-type"s}}
-            }
+            {"desc", meta::uvalue{"int[]-type"s}}
         });
         CHECK(meta::resolve_type<int[]>().get_metadata().at("desc") == "int[]-type"s);
     }
 
     SUBCASE("function") {
         meta::function_<int(*)(int)>({
-            .metadata{
-                {"desc", meta::uvalue{"int->int"s}}
-            }
+            {"desc", meta::uvalue{"int->int"s}}
         });
         CHECK(meta::resolve_type<int(*)(int)>().get_metadata().at("desc") == "int->int"s);
     }
 
     SUBCASE("member") {
         meta::member_<int ivec2::*>({
-            .metadata{
-                {"desc", meta::uvalue{"ivec2::int"s}}
-            }
+            {"desc", meta::uvalue{"ivec2::int"s}}
         });
         CHECK(meta::resolve_type<int ivec2::*>().get_metadata().at("desc") == "ivec2::int"s);
     }
 
     SUBCASE("method") {
         meta::method_<int (ivec2::*)(int)>({
-            .metadata{
-                {"desc", meta::uvalue{"ivec2(int -> int)"s}}
-            }
+            {"desc", meta::uvalue{"ivec2(int -> int)"s}}
         });
         CHECK(meta::resolve_type<int (ivec2::*)(int)>().get_metadata().at("desc") == "ivec2(int -> int)"s);
     }
 
     SUBCASE("nullptr") {
         meta::nullptr_<std::nullptr_t>({
-            .metadata{
-                {"desc", meta::uvalue{"nullptr_t"s}}
-            }
+            {"desc", meta::uvalue{"nullptr_t"s}}
         });
         CHECK(meta::resolve_type<std::nullptr_t>().get_metadata().at("desc") == "nullptr_t"s);
     }
 
     SUBCASE("number") {
         meta::number_<int>({
-            .metadata{
-                {"desc", meta::uvalue{"int-type"s}}
-            }
+            {"desc", meta::uvalue{"int-type"s}}
         });
         CHECK(meta::resolve_type<int>().get_metadata().at("desc") == "int-type"s);
     }
 
     SUBCASE("pointer") {
         meta::pointer_<int*>({
-            .metadata{
-                {"desc", meta::uvalue{"int*-type"s}}
-            }
+            {"desc", meta::uvalue{"int*-type"s}}
         });
         CHECK(meta::resolve_type<int*>().get_metadata().at("desc") == "int*-type"s);
     }
 
     SUBCASE("reference") {
         meta::reference_<int&>({
-            .metadata{
-                {"desc", meta::uvalue{"int&-type"s}}
-            }
+            {"desc", meta::uvalue{"int&-type"s}}
         });
         CHECK(meta::resolve_type<int&>().get_metadata().at("desc") == "int&-type"s);
     }
 
     SUBCASE("void") {
         meta::void_<void>({
-            .metadata{
-                {"desc", meta::uvalue{"void-type"s}}
-            }
+            {"desc", meta::uvalue{"void-type"s}}
         });
         CHECK(meta::resolve_type<void>().get_metadata().at("desc") == "void-type"s);
     }