feat: validate package on pack

Author: egil

TimeProviderExtensions.sln

@@ -11,6 +11,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 	ProjectSection(SolutionItems) = preProject
 		.editorconfig = .editorconfig
 		CHANGELOG.md = CHANGELOG.md
+		src\TimeProviderExtensions\CompatibilitySuppressions.xml = src\TimeProviderExtensions\CompatibilitySuppressions.xml
 		README.md = README.md
 	EndProjectSection
 EndProject

src/TimeProviderExtensions/CompatibilitySuppressions.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- https://learn.microsoft.com/en-us/dotnet/fundamentals/package-validation/diagnostic-ids -->
+<Suppressions xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Threading.PeriodicTimerWrapper</Target>
+    <Left>lib/net6.0/TimeProviderExtensions.dll</Left>
+    <Right>lib/net8.0/TimeProviderExtensions.dll</Right>
+  </Suppression>
+</Suppressions>

src/TimeProviderExtensions/TimeProviderExtensions.csproj

@@ -19,6 +19,10 @@
 		<PublishRepositoryUrl>true</PublishRepositoryUrl>
 		<EmbedUntrackedSources>true</EmbedUntrackedSources>
 		<MinVerTagPrefix>v</MinVerTagPrefix>
+		<EnablePackageValidation>true</EnablePackageValidation>
+		<GenerateCompatibilitySuppressionFile>true</GenerateCompatibilitySuppressionFile>
+		<!-- Enable to establish a base line for breaking changes once v1 is shipped -->
+		<!--<PackageValidationBaselineVersion>1.0.0</PackageValidationBaselineVersion>-->
 	</PropertyGroup>
 
 	<PropertyGroup>