Simplify compile

include/fmt/compile.h

@@ -676,25 +676,11 @@ auto do_compile(const Format& format)
   return preparator<Format, Args...>::prepare(format);
 }
 #endif
-}  // namespace internal
-
-template <typename... Args> struct prepared_format {
-  typedef typename internal::basic_prepared_format<
-      std::string, internal::parts_container<char>, Args...>::type type;
-};
 
-template <typename... Args> struct wprepared_format {
-  typedef typename internal::basic_prepared_format<
-      std::wstring, internal::parts_container<wchar_t>, Args...>::type type;
-};
-
-template <typename... Args>
-using prepared_format_t = typename internal::basic_prepared_format<
-    std::string, internal::parts_container<char>, Args...>::type;
-
-template <typename... Args>
-using wprepared_format_t = typename internal::basic_prepared_format<
-    std::wstring, internal::parts_container<wchar_t>, Args...>::type;
+template <typename... Args> using prepared_format_t =
+  typename basic_prepared_format<
+      std::string, parts_container<char>, Args...>::type;
+}  // namespace internal
 
 #if FMT_USE_CONSTEXPR
 

test/compile-test.cc

@@ -476,7 +476,7 @@ TEST(PrepareTest, CopyPreparedFormat_InternalStringViewsAreNotInvalidated) {
 }
 
 TEST(PrepareTest, ReusedPreparedFormatType) {
-  typedef fmt::prepared_format<std::string, int>::type prepared_format;
+  using prepared_format = fmt::internal::prepared_format_t<std::string, int>;
 
   prepared_format prepared = fmt::compile<prepared_format>("The {} is {}.");
   EXPECT_EQ("The answer is 42.", prepared.format("answer", 42));