diff --git a/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/CompilerFeatureRequiredAttribute.cs b/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/CompilerFeatureRequiredAttribute.cs
deleted file mode 100644
index cefddff94..000000000
--- a/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/CompilerFeatureRequiredAttribute.cs
+++ /dev/null
@@ -1,33 +0,0 @@
-// Licensed to the .NET Foundation under one or more agreements.
-// The .NET Foundation licenses this file to you under the MIT license.
-
-// ReSharper disable once CheckNamespace
-namespace System.Runtime.CompilerServices;
-
-///
-/// Indicates that compiler support for a particular feature is required for the location where this attribute is
-/// applied.
-///
-[AttributeUsage (AttributeTargets.All, AllowMultiple = true, Inherited = false)]
-internal sealed class CompilerFeatureRequiredAttribute(string featureName) : Attribute
-{
- ///
- /// The used for the ref structs C# feature.
- ///
- public const string RefStructs = nameof (RefStructs);
-
- ///
- /// The used for the required members C# feature.
- ///
- public const string RequiredMembers = nameof (RequiredMembers);
-
- ///
- /// The name of the compiler feature.
- ///
- public string FeatureName { get; } = featureName;
- ///
- /// If true, the compiler can choose to allow access to the location where this attribute is applied if it does not
- /// understand .
- ///
- public bool IsOptional { get; init; }
-}
\ No newline at end of file
diff --git a/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/IsExternalInit.cs b/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/IsExternalInit.cs
deleted file mode 100644
index 4976ee705..000000000
--- a/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/IsExternalInit.cs
+++ /dev/null
@@ -1,18 +0,0 @@
-using System.ComponentModel;
-using System.Diagnostics;
-using System.Diagnostics.CodeAnalysis;
-
-// ReSharper disable CheckNamespace
-namespace System.Runtime.CompilerServices;
-
-///
-/// Reserved to be used by the compiler for tracking metadata.
-/// This class should not be used by developers in source code.
-///
-///
-/// Copied from .net source code, for support of init property accessors in netstandard2.0.
-///
-[ExcludeFromCodeCoverage]
-[DebuggerNonUserCode]
-[EditorBrowsable (EditorBrowsableState.Never)]
-public static class IsExternalInit;
diff --git a/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/NullableAttributes.cs b/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/NullableAttributes.cs
deleted file mode 100644
index 11ef7e4cf..000000000
--- a/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/NullableAttributes.cs
+++ /dev/null
@@ -1,208 +0,0 @@
-// Licensed to the .NET Foundation under one or more agreements.
-// The .NET Foundation licenses this file to you under the MIT license.
-//
-// This file is further modified from the original, for this project,
-// to comply with project style.
-// No changes are made which affect compatibility with the same types from
-// APIs later than netstandard2.0, nor will this file be included in compilations
-// targeted at later APIs.
-//
-// Originally rom https://github.com/dotnet/runtime/blob/ef72b95937703e485fdbbb75f3251fedfd1a0ef9/src/libraries/System.Private.CoreLib/src/System/Diagnostics/CodeAnalysis/NullableAttributes.cs
-
-// ReSharper disable CheckNamespace
-
-// ReSharper disable UnusedAutoPropertyAccessor.Global
-// ReSharper disable UnusedType.Global
-
-namespace System.Diagnostics.CodeAnalysis;
-
-/// Specifies that null is allowed as an input even if the corresponding type disallows it.
-/// Excluded from output assembly via file specified in ApiCompatExcludeAttributesFile element in the project file.
-[AttributeUsage (AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Property)]
-[ExcludeFromCodeCoverage]
-[DebuggerNonUserCode]
-internal sealed class AllowNullAttribute : Attribute;
-
-/// Specifies that null is disallowed as an input even if the corresponding type allows it.
-/// Excluded from output assembly via file specified in ApiCompatExcludeAttributesFile element in the project file.
-[AttributeUsage (AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Property)]
-[ExcludeFromCodeCoverage]
-[DebuggerNonUserCode]
-internal sealed class DisallowNullAttribute : Attribute;
-
-/// Specifies that an output may be null even if the corresponding type disallows it.
-/// Excluded from output assembly via file specified in ApiCompatExcludeAttributesFile element in the project file.
-[AttributeUsage (AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Property | AttributeTargets.ReturnValue)]
-[ExcludeFromCodeCoverage]
-[DebuggerNonUserCode]
-internal sealed class MaybeNullAttribute : Attribute;
-
-///
-/// Specifies that an output will not be null even if the corresponding type allows it. Specifies that an input
-/// argument was not null when the call returns.
-///
-/// Excluded from output assembly via file specified in ApiCompatExcludeAttributesFile element in the project file.
-[AttributeUsage (AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Property | AttributeTargets.ReturnValue)]
-[ExcludeFromCodeCoverage]
-[DebuggerNonUserCode]
-internal sealed class NotNullAttribute : Attribute;
-
-///
-/// Specifies that when a method returns , the parameter may be null even if the corresponding
-/// type disallows it.
-///
-/// Excluded from output assembly via file specified in ApiCompatExcludeAttributesFile element in the project file.
-[AttributeUsage (AttributeTargets.Parameter)]
-[ExcludeFromCodeCoverage]
-[DebuggerNonUserCode]
-internal sealed class MaybeNullWhenAttribute : Attribute
-{
- /// Initializes the attribute with the specified return value condition.
- ///
- /// The return value condition. If the method returns this value, the associated parameter may be null.
- ///
-#pragma warning disable IDE0290 // Use primary constructor
- public MaybeNullWhenAttribute (bool returnValue) { ReturnValue = returnValue; }
-#pragma warning restore IDE0290 // Use primary constructor
-
- /// Gets the return value condition.
- public bool ReturnValue { get; }
-}
-
-///
-/// Specifies that when a method returns , the parameter will not be null even if the
-/// corresponding type allows it.
-///
-/// Excluded from output assembly via file specified in ApiCompatExcludeAttributesFile element in the project file.
-[AttributeUsage (AttributeTargets.Parameter)]
-[ExcludeFromCodeCoverage]
-[DebuggerNonUserCode]
-internal sealed class NotNullWhenAttribute : Attribute
-{
- /// Initializes the attribute with the specified return value condition.
- ///
- /// The return value condition. If the method returns this value, the associated parameter will not be null.
- ///
-#pragma warning disable IDE0290 // Use primary constructor
- public NotNullWhenAttribute (bool returnValue) { ReturnValue = returnValue; }
-#pragma warning restore IDE0290 // Use primary constructor
-
- /// Gets the return value condition.
- public bool ReturnValue { get; }
-}
-
-/// Specifies that the output will be non-null if the named parameter is non-null.
-/// Excluded from output assembly via file specified in ApiCompatExcludeAttributesFile element in the project file.
-[AttributeUsage (AttributeTargets.Parameter | AttributeTargets.Property | AttributeTargets.ReturnValue, AllowMultiple = true)]
-[ExcludeFromCodeCoverage]
-[DebuggerNonUserCode]
-internal sealed class NotNullIfNotNullAttribute : Attribute
-{
- /// Initializes the attribute with the associated parameter name.
- ///
- /// The associated parameter name. The output will be non-null if the argument to the parameter specified is non-null.
- ///
-#pragma warning disable IDE0290 // Use primary constructor
- public NotNullIfNotNullAttribute (string parameterName) { ParameterName = parameterName; }
-#pragma warning restore IDE0290 // Use primary constructor
-
- /// Gets the associated parameter name.
- public string ParameterName { get; }
-}
-
-/// Applied to a method that will never return under any circumstance.
-/// Excluded from output assembly via file specified in ApiCompatExcludeAttributesFile element in the project file.
-[AttributeUsage (AttributeTargets.Method, Inherited = false)]
-[ExcludeFromCodeCoverage]
-[DebuggerNonUserCode]
-internal sealed class DoesNotReturnAttribute : Attribute;
-
-/// Specifies that the method will not return if the associated Boolean parameter is passed the specified value.
-/// Excluded from output assembly via file specified in ApiCompatExcludeAttributesFile element in the project file.
-[AttributeUsage (AttributeTargets.Parameter)]
-[ExcludeFromCodeCoverage]
-[DebuggerNonUserCode]
-internal sealed class DoesNotReturnIfAttribute : Attribute
-{
- /// Initializes the attribute with the specified parameter value.
- ///
- /// The condition parameter value. Code after the method will be considered unreachable by diagnostics if the argument
- /// to
- /// the associated parameter matches this value.
- ///
-#pragma warning disable IDE0290 // Use primary constructor
- public DoesNotReturnIfAttribute (bool parameterValue) { ParameterValue = parameterValue; }
-#pragma warning restore IDE0290 // Use primary constructor
-
- /// Gets the condition parameter value.
- public bool ParameterValue { get; }
-}
-
-///
-/// Specifies that the method or property will ensure that the listed field and property members have not-null
-/// values.
-///
-/// Excluded from output assembly via file specified in ApiCompatExcludeAttributesFile element in the project file.
-[AttributeUsage (AttributeTargets.Method | AttributeTargets.Property, Inherited = false, AllowMultiple = true)]
-[ExcludeFromCodeCoverage]
-[DebuggerNonUserCode]
-internal sealed class MemberNotNullAttribute : Attribute
-{
- /// Initializes the attribute with a field or property member.
- ///
- /// The field or property member that is promised to be not-null.
- ///
- public MemberNotNullAttribute (string member) { Members = [member]; }
-
- /// Initializes the attribute with the list of field and property members.
- ///
- /// The list of field and property members that are promised to be not-null.
- ///
- public MemberNotNullAttribute (params string [] members) { Members = members; }
-
- /// Gets field or property member names.
- public string [] Members { get; }
-}
-
-///
-/// Specifies that the method or property will ensure that the listed field and property members have not-null values
-/// when returning with the specified return value condition.
-///
-/// Excluded from output assembly via file specified in ApiCompatExcludeAttributesFile element in the project file.
-[AttributeUsage (AttributeTargets.Method | AttributeTargets.Property, Inherited = false, AllowMultiple = true)]
-[ExcludeFromCodeCoverage]
-[DebuggerNonUserCode]
-internal sealed class MemberNotNullWhenAttribute : Attribute
-{
- /// Initializes the attribute with the specified return value condition and a field or property member.
- ///
- /// The return value condition. If the method returns this value, the associated parameter will not be null.
- ///
- ///
- /// The field or property member that is promised to be not-null.
- ///
- public MemberNotNullWhenAttribute (bool returnValue, string member)
- {
- ReturnValue = returnValue;
- Members = [member];
- }
-
- /// Initializes the attribute with the specified return value condition and list of field and property members.
- ///
- /// The return value condition. If the method returns this value, the associated parameter will not be null.
- ///
- ///
- /// The list of field and property members that are promised to be not-null.
- ///
- public MemberNotNullWhenAttribute (bool returnValue, params string [] members)
- {
- ReturnValue = returnValue;
- Members = members;
- }
-
- /// Gets field or property member names.
- public string [] Members { get; }
-
- /// Gets the return value condition.
- public bool ReturnValue { get; }
-}
diff --git a/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/RequiredMemberAttribute.cs b/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/RequiredMemberAttribute.cs
deleted file mode 100644
index 2fb8d3841..000000000
--- a/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/RequiredMemberAttribute.cs
+++ /dev/null
@@ -1,12 +0,0 @@
-// ReSharper disable CheckNamespace
-// ReSharper disable ConditionalAnnotation
-
-using JetBrains.Annotations;
-
-namespace System.Runtime.CompilerServices;
-
-/// Polyfill to enable netstandard2.0 assembly to use the required keyword.
-/// Excluded from output assembly via file specified in ApiCompatExcludeAttributesFile element in the project file.
-[AttributeUsage (AttributeTargets.Property)]
-[UsedImplicitly]
-public sealed class RequiredMemberAttribute : Attribute;
diff --git a/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/SetsRequiredMembersAttribute.cs b/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/SetsRequiredMembersAttribute.cs
deleted file mode 100644
index ae09ae2cf..000000000
--- a/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/SetsRequiredMembersAttribute.cs
+++ /dev/null
@@ -1,12 +0,0 @@
-// Licensed to the .NET Foundation under one or more agreements.
-// The .NET Foundation licenses this file to you under the MIT license.
-
-// ReSharper disable once CheckNamespace
-namespace System.Diagnostics.CodeAnalysis;
-
-///
-/// Specifies that this constructor sets all required members for the current type, and callers
-/// do not need to set any required members themselves.
-///
-[AttributeUsage (AttributeTargets.Constructor)]
-public sealed class SetsRequiredMembersAttribute : Attribute;
\ No newline at end of file
diff --git a/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/SkipLocalsInitAttribute.cs b/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/SkipLocalsInitAttribute.cs
deleted file mode 100644
index 1eb617362..000000000
--- a/Analyzers/Terminal.Gui.Analyzers.Internal/Compatibility/SkipLocalsInitAttribute.cs
+++ /dev/null
@@ -1,14 +0,0 @@
-namespace System.Runtime.CompilerServices;
-
-[AttributeUsage (
- AttributeTargets.Class
- | AttributeTargets.Constructor
- | AttributeTargets.Event
- | AttributeTargets.Interface
- | AttributeTargets.Method
- | AttributeTargets.Module
- | AttributeTargets.Property
- | AttributeTargets.Struct,
- Inherited = false)]
-
-internal sealed class SkipLocalsInitAttribute : Attribute;
\ No newline at end of file
diff --git a/Analyzers/Terminal.Gui.Analyzers.Internal/Terminal.Gui.Analyzers.Internal.csproj b/Analyzers/Terminal.Gui.Analyzers.Internal/Terminal.Gui.Analyzers.Internal.csproj
index 52fd533b2..3dcd5bc48 100644
--- a/Analyzers/Terminal.Gui.Analyzers.Internal/Terminal.Gui.Analyzers.Internal.csproj
+++ b/Analyzers/Terminal.Gui.Analyzers.Internal/Terminal.Gui.Analyzers.Internal.csproj
@@ -36,15 +36,9 @@
$(NoWarn);nullable;CA1067
-
-
-
-
-
-
-
+
+
-
@@ -53,17 +47,14 @@
+
-
-
-
-
-
-
+
+