lint: fix lints from newer clang-tidy version

1 files changed, 1 insertions, 1 deletions

diff --git a/option.h b/option.h
index a3ad60a..20104d7 100644
--- a/option.h
+++ b/option.h
@@ -15,7 +15,7 @@ constexpr bool is_trivially_destructible_v =
 
 /// Definition of std::enable_if_t for older c++ std versions.
 template <bool Cond, typename T = bool>
-using enable_if_t = typename std::enable_if<Cond, T>::type;
+using enable_if_t = std::enable_if_t<Cond, T>;
 }  // namespace impl
 
 /// The NONE type.