From 5ce924e272646a27137e3c1c8eabf1fe4e920822 Mon Sep 17 00:00:00 2001
From: brianush1 <brianush1@outlook.com>
Date: Tue, 11 Jul 2023 08:58:18 +0300
Subject: [PATCH] fix occasional "`void` does not have a default initializer"
 error in mvd

---
 mvd.d | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/mvd.d b/mvd.d
index be79209..7fda216 100644
--- a/mvd.d
+++ b/mvd.d
@@ -29,7 +29,15 @@ module arsd.mvd;
 import std.traits;
 
 /// This exists just to make the documentation of [mvd] nicer looking.
-alias CommonReturnOfOverloads(alias fn) = CommonType!(staticMap!(ReturnType, __traits(getOverloads, __traits(parent, fn), __traits(identifier, fn))));
+template CommonReturnOfOverloads(alias fn) {
+	alias overloads = __traits(getOverloads, __traits(parent, fn), __traits(identifier, fn));
+	static if (overloads.length == 1) {
+		alias CommonReturnOfOverloads = ReturnType!(overloads[0]);
+	}
+	else {
+		alias CommonReturnOfOverloads = CommonType!(staticMap!(ReturnType, overloads));
+	}
+}
 
 /// See details on the [arsd.mvd] page.
 CommonReturnOfOverloads!fn mvd(alias fn, T...)(T args) {
@@ -149,3 +157,20 @@ unittest {
 
 	//mvd!bar(new OtherClass);
 }
+
+///
+unittest {
+	class MyClass {}
+
+	static bool success = false;
+
+	static struct Wrapper {
+		static:
+		void foo(MyClass a) { success = true; }
+	}
+
+	with(Wrapper) {
+		mvd!foo(new MyClass);
+		assert(success);
+	}
+}