Add Polyfill package

src/Directory.Build.props

@@ -4,6 +4,8 @@
     <LangVersion>14</LangVersion>
     <DebugSymbols>true</DebugSymbols>
     <DebugType>embedded</DebugType>
+    <PublishRepositoryUrl>true</PublishRepositoryUrl>
+    <EmbedUntrackedSources>true</EmbedUntrackedSources>
     <MinVerSkip Condition="'$(Configuration)' == 'Debug'">true</MinVerSkip>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <IsPackable>false</IsPackable>
@@ -14,7 +16,15 @@
     <PublicKey>00240000048000009400000006020000002400005253413100040000010001006146d3789d31477cf4a3b508dcf772ff9ccad8613f6bd6b17b9c4a960a7a7b551ecd22e4f4119ced70ee8bbdf3ca0a117c99fd6248c16255ea9033110c2233d42e74e81bf4f3f7eb09bfe8b53ad399d957514f427171a86f5fe9fe0014be121d571c80c4a0cfc3531bdbf5a2900d936d93f2c94171b9134f7644a1ac3612a0d0</PublicKey>
   </PropertyGroup>
 
-  <PropertyGroup Label="Deterministic Build" Condition="'$(GITHUB_ACTIONS)' == 'true'">
+  <!-- Disable nullability for netstandard2.0 since polyfills are not -->
+  <!-- working correctly with nullability analysis. -->
+  <!-- This is no big deal since nullability is checked for other TFMs. -->
+  <PropertyGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
+    <Nullable>disable</Nullable>
+    <NoWarn>$(NoWarn);CS8632</NoWarn>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(GITHUB_ACTIONS)' == 'true'">
     <ContinuousIntegrationBuild>true</ContinuousIntegrationBuild>
   </PropertyGroup>
 
@@ -31,7 +41,7 @@
     </None>
   </ItemGroup>
 
-  <PropertyGroup Label="Package Information">
+  <PropertyGroup>
     <Description>A library that makes it easier to create beautiful console applications.</Description>
     <Copyright>Patrik Svensson, Phil Scott, Nils Andresen, Cédric Luthi, Frank Ray</Copyright>
     <Authors>Patrik Svensson, Phil Scott, Nils Andresen, Cédric Luthi, Frank Ray</Authors>
@@ -45,13 +55,7 @@
     <PackageReleaseNotes>https://github.com/spectreconsole/spectre.console/releases</PackageReleaseNotes>
   </PropertyGroup>
 
-  <PropertyGroup Label="Source Link">
-    <PublishRepositoryUrl>true</PublishRepositoryUrl>
-    <EmbedUntrackedSources>true</EmbedUntrackedSources>
-  </PropertyGroup>
-
-  <!-- Allow folks to build with minimal dependencies (though they will need to provide their own Version data) -->
-  <ItemGroup Label="Build Tools Package References" Condition="'$(UseBuildTimeTools)' != 'false'">
+  <ItemGroup Condition="'$(UseBuildTimeTools)' != 'false'">
     <PackageReference Include="MinVer" PrivateAssets="All" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" PrivateAssets="All" />
     <PackageReference Include="Roslynator.Analyzers">

src/Directory.Packages.props

@@ -11,7 +11,7 @@
     <PackageVersion Include="Microsoft.SourceLink.GitHub" PrivateAssets="All" Version="8.0.0" />
     <PackageVersion Include="MinVer" PrivateAssets="All" Version="6.0.0" />
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.4" />
-    <PackageVersion Include="PolySharp" Version="1.15.0" />
+    <PackageVersion Include="Polyfill" Version="8.9.0" />
     <PackageVersion Include="Roslynator.Analyzers" PrivateAssets="All" Version="4.14.1" />
     <PackageVersion Include="Scriban" Version="6.5.0" />
     <PackageVersion Include="Shouldly" Version="4.3.0" />

src/Spectre.Console/Internal/Polyfill/IsExternalInit.cs

@@ -1,12 +0,0 @@
-#if NETSTANDARD2_0
-namespace System.Runtime.CompilerServices;
-
-/// <summary>
-/// Reserved to be used by the compiler for tracking metadata.
-/// This class should not be used by developers in source code.
-/// </summary>
-[EditorBrowsable(EditorBrowsableState.Never)]
-internal static class IsExternalInit
-{
-}
-#endif

src/Spectre.Console/Spectre.Console.csproj

@@ -4,11 +4,9 @@
     <TargetFrameworks>net10.0;net9.0;net8.0;netstandard2.0</TargetFrameworks>
     <IsPackable>true</IsPackable>
     <DefineConstants>$(DefineConstants)TRACE;WCWIDTH_VISIBILITY_INTERNAL</DefineConstants>
-  </PropertyGroup>
-  <PropertyGroup>
     <IsAotCompatible Condition="'$(TargetFramework)' != 'netstandard2.0'" >true</IsAotCompatible>
-    <PolySharpIncludeRuntimeSupportedAttributes>true</PolySharpIncludeRuntimeSupportedAttributes>
   </PropertyGroup>
+
   <ItemGroup Label="REMOVE THIS">
     <InternalsVisibleTo Include="$(AssemblyName).Tests"/>
   </ItemGroup>
@@ -18,24 +16,13 @@
     <None Remove="Widgets\Figlet\Fonts\Standard.flf"/>
   </ItemGroup>
 
-  <ItemGroup Label="Dependencies">
-    <PackageReference Include="Wcwidth.Sources">
+  <ItemGroup>
+    <PackageReference Include="Wcwidth.Sources" PrivateAssets="all" />
+    <PackageReference Include="System.Memory" Condition="'$(TargetFramework)' == 'netstandard2.0'"/>
+    <PackageReference Include="Polyfill" Condition="'$(TargetFramework)' == 'netstandard2.0'">
       <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="PolySharp">
-      <PrivateAssets>all</PrivateAssets>
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
-    </PackageReference>
-  </ItemGroup>
-
-  <PropertyGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
-    <AnnotatedReferenceAssemblyVersion>3.0.0</AnnotatedReferenceAssemblyVersion>
-  </PropertyGroup>
-
-  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
-    <PackageReference Include="System.Memory" />
-    <PackageReference Include="TunnelVisionLabs.ReferenceAssemblyAnnotator" PrivateAssets="all"/>
-    <PackageDownload Include="Microsoft.NETCore.App.Ref" Version="[$(AnnotatedReferenceAssemblyVersion)]"/>
   </ItemGroup>
 
 </Project>