Nullable annotations

Author: tmat

src/BuiltInTools/HotReloadAgent.Host/.editorconfig

@@ -0,0 +1,6 @@
+[*.cs]
+
+# IDE0240: Remove redundant nullable directive
+# The directive needs to be included since all sources in a source package are considered generated code
+# when referenced from a project via package reference.
+dotnet_diagnostic.IDE0240.severity = none

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

@@ -38,5 +38,4 @@
   <ItemGroup>
     <Compile Include="..\dotnet-watch\Utilities\ProcessUtilities.cs" />
   </ItemGroup>
-
 </Project>

src/BuiltInTools/HotReloadAgent.Host/PipeListener.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 enable
+
 using System.Diagnostics;
 using System.IO.Pipes;
 using System.Reflection;

src/BuiltInTools/HotReloadAgent.Host/StartupHook.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 enable
+
 using System.Diagnostics;
 using System.IO.Pipes;
 using System.Reflection;

src/BuiltInTools/Web.Middleware/ApplicationPaths.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 enable
+
 using Microsoft.AspNetCore.Http;
 
 namespace Microsoft.AspNetCore.Watch.BrowserRefresh

src/BuiltInTools/Web.Middleware/BlazorWasmHotReloadMiddleware.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 enable
+
 using System.Text.Json;
 using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.Logging;

src/BuiltInTools/Web.Middleware/BrowserRefreshMiddleware.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 enable
+
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Http.Features;
 using Microsoft.Extensions.Logging;

src/BuiltInTools/Web.Middleware/BrowserScriptMiddleware.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 enable
+
 using System.Globalization;
 using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.Logging;

src/BuiltInTools/Web.Middleware/HostingStartup.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 enable
+
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.DependencyInjection;

src/BuiltInTools/Web.Middleware/ResponseStreamWrapper.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 enable
+
 using System.Diagnostics;
 using System.IO.Compression;
 using System.IO.Pipelines;