Enabled implicit usings for the repo. Files with Task conflicts, either defined a global alias for their project as MSBuildTask or individual file aliases.

Author: MiYanni

Directory.Build.props

@@ -43,5 +43,9 @@
     <!-- <TestRunnerAdditionalArguments>-parallel none</TestRunnerAdditionalArguments> -->
   </PropertyGroup>
 
+  <PropertyGroup>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
   <Import Project="build/GenerateResxSource.targets" />
 </Project>

src/BlazorWasmSdk/Tasks/BlazorReadSatelliteAssemblyFile.cs

@@ -8,7 +8,7 @@
 
 namespace Microsoft.NET.Sdk.BlazorWebAssembly
 {
-    public class BlazorReadSatelliteAssemblyFile : Task
+    public class BlazorReadSatelliteAssemblyFile : MSBuildTask
     {
         [Output]
         public ITaskItem[] SatelliteAssembly { get; set; }

src/BlazorWasmSdk/Tasks/BlazorWriteSatelliteAssemblyFile.cs

@@ -9,7 +9,7 @@
 
 namespace Microsoft.NET.Sdk.BlazorWebAssembly
 {
-    public class BlazorWriteSatelliteAssemblyFile : Task
+    public class BlazorWriteSatelliteAssemblyFile : MSBuildTask
     {
         [Required]
         public ITaskItem[] SatelliteAssembly { get; set; }

src/BlazorWasmSdk/Tasks/CreateBlazorTrimmerRootDescriptorFile.cs

@@ -13,7 +13,7 @@
 namespace Microsoft.NET.Sdk.BlazorWebAssembly
 {
     // Based on https://github.com/mono/linker/blob/3b329b9481e300bcf4fb88a2eebf8cb5ef8b323b/src/ILLink.Tasks/CreateRootDescriptorFile.cs
-    public class CreateBlazorTrimmerRootDescriptorFile : Task
+    public class CreateBlazorTrimmerRootDescriptorFile : MSBuildTask
     {
         [Required]
         public ITaskItem[] Assemblies { get; set; }

src/BlazorWasmSdk/Tasks/GZipCompress.cs

@@ -12,7 +12,7 @@
 
 namespace Microsoft.NET.Sdk.BlazorWebAssembly
 {
-    public class GZipCompress : Task
+    public class GZipCompress : MSBuildTask
     {
         [Required]
         public ITaskItem[] FilesToCompress { get; set; }

src/BlazorWasmSdk/Tasks/GenerateBlazorBootExtensionJson.cs

@@ -14,7 +14,7 @@
 
 namespace Microsoft.NET.Sdk.BlazorWebAssembly
 {
-    public class GenerateBlazorBootExtensionJson : Task
+    public class GenerateBlazorBootExtensionJson : MSBuildTask
     {
         [Required]
         public string OutputPath { get; set; }

src/BlazorWasmSdk/Tasks/GenerateBlazorWebAssemblyBootJson50.cs

@@ -14,7 +14,7 @@
 
 namespace Microsoft.NET.Sdk.BlazorWebAssembly
 {
-    public class GenerateBlazorWebAssemblyBootJson50 : Task
+    public class GenerateBlazorWebAssemblyBootJson50 : MSBuildTask
     {
         [Required]
         public string AssemblyPath { get; set; }

src/BlazorWasmSdk/Tasks/GenerateServiceWorkerAssetsManifest.cs

@@ -12,7 +12,7 @@
 
 namespace Microsoft.NET.Sdk.BlazorWebAssembly
 {
-    public partial class GenerateServiceWorkerAssetsManifest : Task
+    public partial class GenerateServiceWorkerAssetsManifest : MSBuildTask
     {
         [Required]
         public ITaskItem[] Assets { get; set; }

src/BlazorWasmSdk/Tasks/Microsoft.NET.Sdk.BlazorWebAssembly.Tasks.csproj

@@ -1,4 +1,4 @@
-<Project>
+<Project>
 
   <PropertyGroup>
     <BlazorWasmSdkRoot>$(RepoRoot)\src\BlazorWasmSdk\</BlazorWasmSdkRoot>
@@ -89,5 +89,12 @@
     </ItemGroup>
   </Target>
 
+  <!-- Global usings -->
+  <!-- See: https://learn.microsoft.com/dotnet/core/project-sdk/msbuild-props#using -->
+  <ItemGroup>
+    <!-- This causes conflicts with System.Threading.Tasks.Task. Giving it a unqiue alias avoids the conflict. -->
+     <Using Include="Microsoft.Build.Utilities.Task" Alias="MSBuildTask" /> 
+  </ItemGroup>
+
   <Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk" />
 </Project>

src/BuiltInTools/DotNetWatchTasks/FileSetSerializer.cs

@@ -7,12 +7,12 @@
 using System.Runtime.Serialization.Json;
 using System.Text;
 using Microsoft.Build.Framework;
-using Microsoft.Build.Utilities;
 using Microsoft.DotNet.Watcher.Internal;
+using MSBuildTask = Microsoft.Build.Utilities.Task;
 
 namespace DotNetWatchTasks
 {
-    public class FileSetSerializer : Task
+    public class FileSetSerializer : MSBuildTask
     {
         public ITaskItem[] WatchFiles { get; set; } = null!;