[libc++] Implement P1169R4 (static operator())

Reviewed By: ldionne, huixie90, #libc

Spies: EricWF, libcxx-commits, royjacobson

Differential Revision: https://reviews.llvm.org/D135016

NOKEYCHECK=True
GitOrigin-RevId: 3ec6c997c67d685c533b8c9c2cffde31d834b821
diff --git a/include/module.modulemap.in b/include/module.modulemap.in
index e6481a8..4c3a09d 100644
--- a/include/module.modulemap.in
+++ b/include/module.modulemap.in
@@ -1482,6 +1482,7 @@
     module remove_reference                    { private header "__type_traits/remove_reference.h" }
     module remove_volatile                     { private header "__type_traits/remove_volatile.h" }
     module result_of                           { private header "__type_traits/result_of.h" }
+    module strip_signature                     { private header "__type_traits/strip_signature.h" }
     module type_identity                       { private header "__type_traits/type_identity.h" }
     module type_list                           { private header "__type_traits/type_list.h" }
     module underlying_type                     { private header "__type_traits/underlying_type.h" }