Add #nullable enable to all source files

[Copilot]

Enables nullable reference type annotations project-wide by adding #nullable enable to every .cs source file (test files excluded).

Placement rules

• Files with a file-wide #if preprocessor guard on line 1 (e.g. RegistryExtensions.cs, AsyncEnumerableExtensions.cs, ZipArchiveEntryExtensions.cs) get #nullable enable on line 2, inside the guard scope
• All other source files get #nullable enable as the first line

// Files with a guard:
#if NETFRAMEWORK || NET5_0_OR_GREATER
#nullable enable
...

// All other files:
#nullable enable
using System;
...

[Tyrrrz]

@copilot no need to add #nullable in tests

[Copilot]

@copilot no need to add #nullable in tests

Removed #nullable enable from all test files in bfadfbf.

[Copilot]

Pull request overview

This PR adds #nullable enable directives across the PowerKit library and test source files to explicitly enable nullable reference type context at the file level (including special placement inside file-wide #if guards).

Changes:

• Add #nullable enable as the first line of most .cs files in PowerKit/ and PowerKit.Tests/
• Insert #nullable enable on line 2 for files with a file-wide preprocessor guard (#if ... on line 1)
• Standardize nullable context activation across shipped source files

Reviewed changes

Copilot reviewed 39 out of 39 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
PowerKit/TempFile.cs	Add file-level #nullable enable directive
PowerKit/TempDirectory.cs	Add file-level #nullable enable directive
PowerKit/LockFile.cs	Add file-level #nullable enable directive
PowerKit/Disposable.cs	Add file-level #nullable enable directive
PowerKit/Cell.cs	Add file-level #nullable enable directive
PowerKit/Extensions/AggregateExceptionExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/ArrayPoolExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/AssemblyExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/AsyncEnumerableExtensions.cs	Add #nullable enable inside file-wide #if guard
PowerKit/Extensions/BinaryReaderExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/BinaryWriterExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/BoolExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/CollectionExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/ComparableExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/ConsoleExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/CultureInfoExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/DateTimeExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/DateTimeOffsetExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/DecimalExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/DirectoryExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/DoubleExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/EncodingExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/EnumerableExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/EnvironmentExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/ExceptionExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/FileExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/FunctionalExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/GuidExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/IntExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/LongExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/PathExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/ProcessExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/RegistryExtensions.cs	Add #nullable enable inside file-wide #if guard
PowerKit/Extensions/StreamExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/StringBuilderExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/StringExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/TextReaderExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/TimeSpanExtensions.cs	Add file-level #nullable enable directive
PowerKit/Extensions/ZipArchiveEntryExtensions.cs	Add #nullable enable inside file-wide #if guard
PowerKit.Tests/AggregateExceptionExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/ArrayPoolExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/AssemblyExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/AsyncEnumerableExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/BinaryReaderExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/BinaryWriterExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/BoolExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/CellTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/CollectionExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/ComparableExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/CultureInfoExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/DateTimeExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/DateTimeOffsetExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/DecimalExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/DirectoryExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/DisposableTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/DoubleExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/EncodingExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/EnumerableExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/ExceptionExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/FileExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/FunctionalExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/GuidExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/IntExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/LockFileTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/LongExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/PathExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/ProcessExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/RegistryExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/StreamExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/StringBuilderExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/StringExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/TempDirectoryTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/TempFileTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/TextReaderExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/TimeSpanExtensionsTests.cs	Add file-level #nullable enable directive
PowerKit.Tests/ZipArchiveEntryExtensionsTests.cs	Add file-level #nullable enable directive

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