From 9fadf7a9a426f84bd3d4185442c8e00ac366c27a Mon Sep 17 00:00:00 2001
From: Daniel Cazzulino <daniel@cazzulino.com>
Date: Wed, 10 Sep 2025 17:00:35 -0300
Subject: [PATCH] Fix error when file has no package references

We were failing with an MSBuild error.
---
 src/SmallSharp/Sdk.targets | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/SmallSharp/Sdk.targets b/src/SmallSharp/Sdk.targets
index bd4ce7d..a40c2f7 100644
--- a/src/SmallSharp/Sdk.targets
+++ b/src/SmallSharp/Sdk.targets
@@ -9,7 +9,7 @@
   <Import Project="..\build\SmallSharp.targets" />
 
   <Target Name="ImplicitPackageReferenceFromStartupFile" 
-          BeforeTargets="_GenerateProjectRestoreGraphPerFramework;ResolvePackageAssets;CompileDesignTime;CollectUpToDateCheckInputDesignTime"
+          BeforeTargets="_GenerateProjectRestoreGraphPerFramework;ResolvePackageAssets;CompileDesignTime;CollectUpToDateCheckInputDesignTime;CollectPackageReferences"
           DependsOnTargets="StartupFile"
           Condition="'$(StartupFile)' != '' and Exists('$(StartupFile)')">
 
@@ -21,7 +21,9 @@
     <ItemGroup>
       <_PkgLines Include="@(_StartupFileLines)"
                  Condition="$([MSBuild]::ValueOrDefault('%(Identity)', '').StartsWith('#:package '))" />
+    </ItemGroup>
 
+    <ItemGroup Condition="'@(_PkgLines)' != ''">
       <_PkgReference Include="$([MSBuild]::ValueOrDefault('%(_PkgLines.Identity)', '').Substring(10))" />
 
       <PackageReference Condition="'@(_PkgReference)' != ''" Include="$([MSBuild]::ValueOrDefault('%(_PkgReference.Identity)', '').Split('@')[0])">