Unify the nullable reference type approaches

Directory.Build.targets

@@ -9,7 +9,7 @@
       We still check $(TargetFrameworks) for empty though, because for single-targeted builds we want to
       allow nullable warnings regardless of target framework.
     -->
-    <NoWarn Condition="'$(DisableNullableWarnings)' == '' AND  '$(TargetFrameworks)' != '' AND '$(TargetFramework)' != '' AND '$(TargetFrameworkIdentifier)' != '.NETCoreApp'">$(NoWarn);Nullable</NoWarn>
+    <NoWarn Condition="'$(TargetFrameworks)' != '' AND '$(TargetFramework)' != '' AND '$(TargetFrameworkIdentifier)' != '.NETCoreApp'">$(NoWarn);Nullable</NoWarn>
   </PropertyGroup>
 
   <ItemGroup>

src/BuiltInTools/HotReloadAgent.Data/Microsoft.DotNet.HotReload.Agent.Data.Package.csproj

@@ -7,7 +7,6 @@
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <DebugType>none</DebugType>
     <GenerateDependencyFile>false</GenerateDependencyFile>
-    <Nullable>enable</Nullable>
     <LangVersion>preview</LangVersion>
 
     <!-- NuGet -->

src/BuiltInTools/HotReloadAgent.PipeRpc/Microsoft.DotNet.HotReload.Agent.PipeRpc.Package.csproj

@@ -7,7 +7,6 @@
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <DebugType>none</DebugType>
     <GenerateDependencyFile>false</GenerateDependencyFile>
-    <Nullable>enable</Nullable>
     <LangVersion>preview</LangVersion>
 
     <!-- NuGet -->

src/BuiltInTools/HotReloadAgent/Microsoft.DotNet.HotReload.Agent.Package.csproj

@@ -8,7 +8,6 @@
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <DebugType>none</DebugType>
     <GenerateDependencyFile>false</GenerateDependencyFile>
-    <Nullable>enable</Nullable>
     <LangVersion>preview</LangVersion>
 
     <!-- NuGet -->

src/Cli/dotnet/AspNetCoreCertificateGenerator.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Configurer;
 
 namespace Microsoft.DotNet.Cli;

src/Cli/dotnet/AutomaticEncodingRestorer.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using System.Security;
 
 namespace Microsoft.DotNet.Cli;

src/Cli/dotnet/BuildServer/BuildServerException.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 namespace Microsoft.DotNet.Cli.BuildServer;
 
 internal class BuildServerException : Exception

src/Cli/dotnet/BuildServer/BuildServerProvider.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Cli.Utils;
 using Microsoft.DotNet.Cli.Utils.Extensions;
 using Microsoft.DotNet.Configurer;

src/Cli/dotnet/BuildServer/IBuildServer.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 namespace Microsoft.DotNet.Cli.BuildServer;
 
 internal interface IBuildServer

src/Cli/dotnet/BuildServer/IBuildServerProvider.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 namespace Microsoft.DotNet.Cli.BuildServer;
 
 [Flags]

src/Cli/dotnet/BuildServer/MSBuildServer.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.Build.Execution;
 
 namespace Microsoft.DotNet.Cli.BuildServer;

src/Cli/dotnet/BuildServer/RazorPidFile.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.Extensions.EnvironmentAbstractions;
 
 namespace Microsoft.DotNet.Cli.BuildServer;

src/Cli/dotnet/BuildServer/RazorServer.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Cli.CommandFactory;
 using Microsoft.Extensions.EnvironmentAbstractions;
 

src/Cli/dotnet/BuildServer/VBCSCompilerServer.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using System.Reflection;
 using Microsoft.DotNet.Cli.CommandFactory;
 using Microsoft.DotNet.Cli.Utils;

src/Cli/dotnet/BundledTargetFramework.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using System.Reflection;
 using System.Runtime.Versioning;
 using NuGet.Frameworks;

src/Cli/dotnet/CliCompletion.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using System.CommandLine.Completions;
 using Microsoft.Build.Evaluation;
 using Microsoft.DotNet.Cli.Utils;

src/Cli/dotnet/CliTransaction.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 namespace Microsoft.DotNet.Cli;
 
 internal interface ITransactionContext

src/Cli/dotnet/CliUsage.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Cli.Commands;
 
 namespace Microsoft.DotNet.Cli;

src/Cli/dotnet/CommandBase.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using System.CommandLine;
 using Microsoft.DotNet.Cli.Extensions;
 

src/Cli/dotnet/CommandDirectoryContext.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 namespace Microsoft.DotNet.Cli;
 
 internal static class CommandDirectoryContext

src/Cli/dotnet/CommandFactory/CommandFactory.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Cli.Utils;
 using NuGet.Frameworks;
 

src/Cli/dotnet/CommandFactory/CommandFactoryUsingResolver.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using System.Diagnostics;
 using Microsoft.DotNet.Cli.CommandFactory.CommandResolution;
 using Microsoft.DotNet.Cli.Utils;

src/Cli/dotnet/CommandFactory/CommandResolution/AbstractPathBasedCommandResolver.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Cli.Utils;
 using Microsoft.DotNet.Cli.Utils.Extensions;
 

src/Cli/dotnet/CommandFactory/CommandResolution/AppBaseCommandResolver.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Cli.Utils;
 
 namespace Microsoft.DotNet.Cli.CommandFactory.CommandResolution;

src/Cli/dotnet/CommandFactory/CommandResolution/AppBaseDllCommandResolver.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Cli.Utils;
 using Microsoft.DotNet.Cli.Utils.Extensions;
 

src/Cli/dotnet/CommandFactory/CommandResolution/CommandResolverArguments.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using NuGet.Frameworks;
 
 namespace Microsoft.DotNet.Cli.CommandFactory.CommandResolution;

src/Cli/dotnet/CommandFactory/CommandResolution/CompositeCommandResolver.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Cli.Utils;
 
 namespace Microsoft.DotNet.Cli.CommandFactory.CommandResolution;

src/Cli/dotnet/CommandFactory/CommandResolution/DefaultCommandResolverPolicy.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Cli.Utils;
 
 namespace Microsoft.DotNet.Cli.CommandFactory.CommandResolution;

src/Cli/dotnet/CommandFactory/CommandResolution/DepsJsonCommandResolver.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Cli.Utils;
 using Microsoft.DotNet.Cli.Utils.Extensions;
 using Microsoft.Extensions.DependencyModel;

src/Cli/dotnet/CommandFactory/CommandResolution/DotnetToolsCommandResolver.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 namespace Microsoft.DotNet.Cli.CommandFactory.CommandResolution;
 
 public class DotnetToolsCommandResolver : ICommandResolver

src/Cli/dotnet/CommandFactory/CommandResolution/GenericPlatformCommandSpecFactory.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Cli.Utils;
 
 namespace Microsoft.DotNet.Cli.CommandFactory.CommandResolution;

src/Cli/dotnet/CommandFactory/CommandResolution/ICommandResolver.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 namespace Microsoft.DotNet.Cli.CommandFactory.CommandResolution;
 
 public interface ICommandResolver

src/Cli/dotnet/CommandFactory/CommandResolution/ICommandResolverPolicy.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 namespace Microsoft.DotNet.Cli.CommandFactory.CommandResolution;
 
 public interface ICommandResolverPolicy

src/Cli/dotnet/CommandFactory/CommandResolution/IPackagedCommandSpecFactory.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using NuGet.ProjectModel;
 
 namespace Microsoft.DotNet.Cli.CommandFactory.CommandResolution;

src/Cli/dotnet/CommandFactory/CommandResolution/IPlatformCommandSpecFactory.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Cli.Utils;
 
 namespace Microsoft.DotNet.Cli.CommandFactory.CommandResolution;

src/Cli/dotnet/CommandFactory/CommandResolution/IProject.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using NuGet.Frameworks;
 using NuGet.ProjectModel;
 

src/Cli/dotnet/CommandFactory/CommandResolution/IPublishedPathCommandSpecFactory.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 namespace Microsoft.DotNet.Cli.CommandFactory.CommandResolution;
 
 public interface IPublishedPathCommandSpecFactory

src/Cli/dotnet/CommandFactory/CommandResolution/LocalToolsCommandResolver.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Cli.ToolManifest;
 using Microsoft.DotNet.Cli.ToolPackage;
 using Microsoft.DotNet.Cli.Utils;

src/Cli/dotnet/CommandFactory/CommandResolution/LockFileTargetExtensions.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using NuGet.Packaging.Core;
 using NuGet.ProjectModel;
 

src/Cli/dotnet/CommandFactory/CommandResolution/MSBuildProject.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.Build.Evaluation;
 using Microsoft.DotNet.Cli.Utils;
 using Microsoft.DotNet.Cli.Utils.Extensions;

src/Cli/dotnet/CommandFactory/CommandResolution/MuxerCommandResolver.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Cli.Utils;
 using Microsoft.DotNet.Cli.Utils.Extensions;
 

src/Cli/dotnet/CommandFactory/CommandResolution/MuxerCommandSpecMaker.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Cli.Utils;
 
 namespace Microsoft.DotNet.Cli.CommandFactory.CommandResolution;

src/Cli/dotnet/CommandFactory/CommandResolution/NuGetUtils.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using NuGet.Packaging.Core;
 using NuGet.ProjectModel;
 

src/Cli/dotnet/CommandFactory/CommandResolution/OutputPathCommandResolver.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+#nullable disable
+
 using Microsoft.DotNet.Cli.Utils;
 using Microsoft.DotNet.Cli.Utils.Extensions;
 using NuGet.Frameworks;