1 files changed, 0 insertions, 8 deletions
diff --git a/src/base.hpp b/src/base.hpp
index a62a745b..2c511c4b 100644
--- a/src/base.hpp
+++ b/src/base.hpp
@@ -7,9 +7,6 @@
 #include <string_view>
 
 namespace cru {
-template <typename T>
-struct type_tag {};
-
 // typedefs
 using String = std::wstring;
 using MultiByteString = std::string;
@@ -38,9 +35,4 @@ struct Interface {
 [[noreturn]] inline void UnreachableCode() {
   throw std::logic_error("Unreachable code.");
 }
-
-inline void Require(const bool condition,
-                    const MultiByteStringView& error_message) {
-  if (!condition) throw std::invalid_argument(error_message.data());
-}
 }  // namespace cru