From 8c501a65210dbf2eedb8faf75a8ab5e3ec824bfe Mon Sep 17 00:00:00 2001
From: xtqqczze <xtqqczze@gmail.com>
Date: Wed, 25 Nov 2020 12:16:11 +0000
Subject: [PATCH 1/3] Fix RCS1188: Remove redundant auto-property
 initialization part 2

`src\Microsoft.PowerShell.Commands.Utility\Microsoft.PowerShell.Commands.Utility.csproj`

Follow-up to #14244.

https://github.com/JosefPihrt/Roslynator/blob/master/docs/analyzers/RCS1188.md
---
 .../commands/management/PingPathCommand.cs       |  2 +-
 .../commands/utility/AddType.cs                  |  4 ++--
 .../commands/utility/ExportAliasCommand.cs       |  2 +-
 .../commands/utility/Measure-Object.cs           |  4 ++--
 .../commands/utility/New-Object.cs               |  6 +++---
 .../commands/utility/NewTimeSpanCommand.cs       |  8 ++++----
 .../commands/utility/OrderObjectBase.cs          |  4 ++--
 .../commands/utility/Select-Object.cs            |  8 ++++----
 .../commands/utility/Sort-Object.cs              |  4 ++--
 .../commands/utility/Var.cs                      |  2 +-
 .../Common/WebRequestPSCmdlet.Common.cs          |  6 +++---
 .../commands/utility/Write.cs                    | 16 ++++++++--------
 .../commands/utility/WriteAliasCommandBase.cs    |  2 +-
 .../commands/utility/WriteConsoleCmdlet.cs       |  2 +-
 .../commands/utility/WriteProgressCmdlet.cs      |  2 +-
 .../commands/utility/XmlCommands.cs              |  4 ++--
 16 files changed, 38 insertions(+), 38 deletions(-)

diff --git a/src/Microsoft.PowerShell.Commands.Management/commands/management/PingPathCommand.cs b/src/Microsoft.PowerShell.Commands.Management/commands/management/PingPathCommand.cs
index 197ffa694bd..43694f89d54 100644
--- a/src/Microsoft.PowerShell.Commands.Management/commands/management/PingPathCommand.cs
+++ b/src/Microsoft.PowerShell.Commands.Management/commands/management/PingPathCommand.cs
@@ -109,7 +109,7 @@ public override string[] Exclude
         /// </summary>
         [Parameter]
         [Alias("Type")]
-        public TestPathType PathType { get; set; } = TestPathType.Any;
+        public TestPathType PathType { get; set; }
 
         /// <summary>
         /// Gets or sets the IsValid parameter.
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/AddType.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/AddType.cs
index a2ffec58392..30a6789653f 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/AddType.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/AddType.cs
@@ -280,7 +280,7 @@ private void ProcessPaths(List<string> resolvedPaths)
         /// </summary>
         [Parameter(ParameterSetName = FromSourceParameterSetName)]
         [Parameter(ParameterSetName = FromMemberParameterSetName)]
-        public Language Language { get; set; } = Language.CSharp;
+        public Language Language { get; set; }
 
         /// <summary>
         /// Any reference DLLs to use in the compilation.
@@ -392,7 +392,7 @@ public string OutputAssembly
         [Parameter(ParameterSetName = FromPathParameterSetName)]
         [Parameter(ParameterSetName = FromLiteralPathParameterSetName)]
         [Alias("OT")]
-        public OutputAssemblyType OutputType { get; set; } = OutputAssemblyType.Library;
+        public OutputAssemblyType OutputType { get; set; }
 
         /// <summary>
         /// Flag to pass the resulting types along.
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/ExportAliasCommand.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/ExportAliasCommand.cs
index 431f30a3dcc..b256c0f8632 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/ExportAliasCommand.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/ExportAliasCommand.cs
@@ -109,7 +109,7 @@ public SwitchParameter PassThru
         /// Parameter that determines the format of the file created.
         /// </summary>
         [Parameter]
-        public ExportAliasFormat As { get; set; } = ExportAliasFormat.Csv;
+        public ExportAliasFormat As { get; set; }
 
         /// <summary>
         /// Property that sets append parameter.
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Measure-Object.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Measure-Object.cs
index 529687db68f..78c3595367a 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Measure-Object.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Measure-Object.cs
@@ -18,7 +18,7 @@ public abstract class MeasureInfo
         /// <summary>
         /// Property name.
         /// </summary>
-        public string Property { get; set; } = null;
+        public string Property { get; set; }
     }
 
     /// <summary>
@@ -244,7 +244,7 @@ public MeasureObjectCommand()
         /// <value></value>
         [ValidateNotNullOrEmpty]
         [Parameter(Position = 0)]
-        public PSPropertyExpression[] Property { get; set; } = null;
+        public PSPropertyExpression[] Property { get; set; }
 
         #endregion Common parameters in both sets
 
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/New-Object.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/New-Object.cs
index b40b53952f0..c067615f3c0 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/New-Object.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/New-Object.cs
@@ -34,7 +34,7 @@ public sealed class NewObjectCommand : PSCmdlet
         /// <summary> the number</summary>
         [Parameter(ParameterSetName = netSetName, Mandatory = true, Position = 0)]
         [ValidateTrustedData]
-        public string TypeName { get; set; } = null;
+        public string TypeName { get; set; }
 
 #if !UNIX
         private Guid _comObjectClsId = Guid.Empty;
@@ -43,7 +43,7 @@ public sealed class NewObjectCommand : PSCmdlet
         /// </summary>
         [Parameter(ParameterSetName = "Com", Mandatory = true, Position = 0)]
         [ValidateTrustedData]
-        public string ComObject { get; set; } = null;
+        public string ComObject { get; set; }
 #endif
 
         /// <summary>
@@ -53,7 +53,7 @@ public sealed class NewObjectCommand : PSCmdlet
         [Parameter(ParameterSetName = netSetName, Mandatory = false, Position = 1)]
         [ValidateTrustedData]
         [Alias("Args")]
-        public object[] ArgumentList { get; set; } = null;
+        public object[] ArgumentList { get; set; }
 
         /// <summary>
         /// True if we should have an error when Com objects will use an interop assembly.
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/NewTimeSpanCommand.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/NewTimeSpanCommand.cs
index 0e633ca5b2e..53c39250763 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/NewTimeSpanCommand.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/NewTimeSpanCommand.cs
@@ -68,25 +68,25 @@ public DateTime End
         /// Allows the user to override the day.
         /// </summary>
         [Parameter(ParameterSetName = "Time")]
-        public int Days { get; set; } = 0;
+        public int Days { get; set; }
 
         /// <summary>
         /// Allows the user to override the hour.
         /// </summary>
         [Parameter(ParameterSetName = "Time")]
-        public int Hours { get; set; } = 0;
+        public int Hours { get; set; }
 
         /// <summary>
         /// Allows the user to override the minute.
         /// </summary>
         [Parameter(ParameterSetName = "Time")]
-        public int Minutes { get; set; } = 0;
+        public int Minutes { get; set; }
 
         /// <summary>
         /// Allows the user to override the second.
         /// </summary>
         [Parameter(ParameterSetName = "Time")]
-        public int Seconds { get; set; } = 0;
+        public int Seconds { get; set; }
 
         #endregion
 
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/OrderObjectBase.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/OrderObjectBase.cs
index b3f768f1a65..0e00de90d52 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/OrderObjectBase.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/OrderObjectBase.cs
@@ -182,9 +182,9 @@ internal sealed class OrderByProperty
         /// <summary>
         /// A logical matrix where each row is an input object and its property values specified by Properties.
         /// </summary>
-        internal List<OrderByPropertyEntry> OrderMatrix { get; } = null;
+        internal List<OrderByPropertyEntry> OrderMatrix { get; }
 
-        internal OrderByPropertyComparer Comparer { get; } = null;
+        internal OrderByPropertyComparer Comparer { get; }
 
         internal List<MshParameter> MshParameterList
         {
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Select-Object.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Select-Object.cs
index 4fd27e4d007..0144812e9e0 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Select-Object.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Select-Object.cs
@@ -91,14 +91,14 @@ public sealed class SelectObjectCommand : PSCmdlet
         /// <value></value>
         [Parameter(ParameterSetName = "DefaultParameter")]
         [Parameter(ParameterSetName = "SkipLastParameter")]
-        public string[] ExcludeProperty { get; set; } = null;
+        public string[] ExcludeProperty { get; set; }
 
         /// <summary>
         /// </summary>
         /// <value></value>
         [Parameter(ParameterSetName = "DefaultParameter")]
         [Parameter(ParameterSetName = "SkipLastParameter")]
-        public string ExpandProperty { get; set; } = null;
+        public string ExpandProperty { get; set; }
 
         /// <summary>
         /// </summary>
@@ -152,14 +152,14 @@ public int First
         /// <value></value>
         [Parameter(ParameterSetName = "DefaultParameter")]
         [ValidateRange(0, int.MaxValue)]
-        public int Skip { get; set; } = 0;
+        public int Skip { get; set; }
 
         /// <summary>
         /// Skip the specified number of items from end.
         /// </summary>
         [Parameter(ParameterSetName = "SkipLastParameter")]
         [ValidateRange(0, int.MaxValue)]
-        public int SkipLast { get; set; } = 0;
+        public int SkipLast { get; set; }
 
         /// <summary>
         /// With this switch present, the cmdlet won't "short-circuit"
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Sort-Object.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Sort-Object.cs
index 5f66b39753f..6ccc30dcf7f 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Sort-Object.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Sort-Object.cs
@@ -53,14 +53,14 @@ public SwitchParameter Descending
         /// </summary>
         [Parameter(ParameterSetName = "Top", Mandatory = true)]
         [ValidateRange(1, int.MaxValue)]
-        public int Top { get; set; } = 0;
+        public int Top { get; set; }
 
         /// <summary>
         /// Gets or sets the number of items to return in a Bottom N sort.
         /// </summary>
         [Parameter(ParameterSetName = "Bottom", Mandatory = true)]
         [ValidateRange(1, int.MaxValue)]
-        public int Bottom { get; set; } = 0;
+        public int Bottom { get; set; }
 
         /// <summary>
         /// Moves unique entries to the front of the list.
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Var.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Var.cs
index 6f379462cfe..06cae529d46 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Var.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Var.cs
@@ -401,7 +401,7 @@ public sealed class NewVariableCommand : VariableCommandBase
         /// be ReadOnly, Constant, and/or Private.
         /// </summary>
         [Parameter]
-        public ScopedItemOptions Option { get; set; } = ScopedItemOptions.None;
+        public ScopedItemOptions Option { get; set; }
 
         /// <summary>
         /// Specifies the visibility of the new variable...
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs
index f540fa67636..4bf9e353536 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs
@@ -139,7 +139,7 @@ public abstract partial class WebRequestPSCmdlet : PSCmdlet
         /// OAuth/Bearer: Requires Token.
         /// </summary>
         [Parameter]
-        public virtual WebAuthenticationType Authentication { get; set; } = WebAuthenticationType.None;
+        public virtual WebAuthenticationType Authentication { get; set; }
 
         /// <summary>
         /// Gets or sets the Credential property.
@@ -178,7 +178,7 @@ public abstract partial class WebRequestPSCmdlet : PSCmdlet
         /// Gets or sets the TLS/SSL protocol used by the Web Cmdlet.
         /// </summary>
         [Parameter]
-        public virtual WebSslProtocol SslProtocol { get; set; } = WebSslProtocol.Default;
+        public virtual WebSslProtocol SslProtocol { get; set; }
 
         /// <summary>
         /// Gets or sets the Token property. Token is required by Authentication OAuth and Bearer.
@@ -239,7 +239,7 @@ public virtual int MaximumRedirection
         /// </summary>
         [Parameter]
         [ValidateRange(0, Int32.MaxValue)]
-        public virtual int MaximumRetryCount { get; set; } = 0;
+        public virtual int MaximumRetryCount { get; set; }
 
         /// <summary>
         /// Gets or sets the RetryIntervalSec property, which determines the number seconds between retries.
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Write.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Write.cs
index c812d47ec7f..35e1bc8542a 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Write.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Write.cs
@@ -21,7 +21,7 @@ public sealed class WriteDebugCommand : PSCmdlet
         [Parameter(Position = 0, Mandatory = true, ValueFromPipeline = true)]
         [AllowEmptyString]
         [Alias("Msg")]
-        public string Message { get; set; } = null;
+        public string Message { get; set; }
 
         /// <summary>
         /// This method implements the ProcessRecord method for Write-Debug command.
@@ -69,7 +69,7 @@ public sealed class WriteVerboseCommand : PSCmdlet
         [Parameter(Position = 0, Mandatory = true, ValueFromPipeline = true)]
         [AllowEmptyString]
         [Alias("Msg")]
-        public string Message { get; set; } = null;
+        public string Message { get; set; }
 
         /// <summary>
         /// This method implements the ProcessRecord method for Write-verbose command.
@@ -117,7 +117,7 @@ public sealed class WriteWarningCommand : PSCmdlet
         [Parameter(Position = 0, Mandatory = true, ValueFromPipeline = true)]
         [AllowEmptyString]
         [Alias("Msg")]
-        public string Message { get; set; } = null;
+        public string Message { get; set; }
 
         /// <summary>
         /// This method implements the ProcessRecord method for Write-Warning command.
@@ -215,7 +215,7 @@ public class WriteOrThrowErrorCommand : PSCmdlet
         /// ErrorRecord.Exception -- if not specified, ErrorRecord.Exception is System.Exception.
         /// </summary>
         [Parameter(ParameterSetName = "WithException", Mandatory = true)]
-        public Exception Exception { get; set; } = null;
+        public Exception Exception { get; set; }
 
         /// <summary>
         /// If Exception is specified, this is ErrorRecord.ErrorDetails.Message;
@@ -226,21 +226,21 @@ public class WriteOrThrowErrorCommand : PSCmdlet
         [AllowNull]
         [AllowEmptyString]
         [Alias("Msg")]
-        public string Message { get; set; } = null;
+        public string Message { get; set; }
 
         /// <summary>
         /// If Exception is specified, this is ErrorRecord.ErrorDetails.Message;
         /// otherwise, the Exception is System.Exception, and this is Exception.Message.
         /// </summary>
         [Parameter(ParameterSetName = "ErrorRecord", Mandatory = true)]
-        public ErrorRecord ErrorRecord { get; set; } = null;
+        public ErrorRecord ErrorRecord { get; set; }
 
         /// <summary>
         /// ErrorRecord.CategoryInfo.Category.
         /// </summary>
         [Parameter(ParameterSetName = "NoException")]
         [Parameter(ParameterSetName = "WithException")]
-        public ErrorCategory Category { get; set; } = ErrorCategory.NotSpecified;
+        public ErrorCategory Category { get; set; }
 
         /// <summary>
         /// ErrorRecord.ErrorId.
@@ -254,7 +254,7 @@ public class WriteOrThrowErrorCommand : PSCmdlet
         /// </summary>
         [Parameter(ParameterSetName = "NoException")]
         [Parameter(ParameterSetName = "WithException")]
-        public object TargetObject { get; set; } = null;
+        public object TargetObject { get; set; }
 
         /// <summary>
         /// ErrorRecord.ErrorDetails.RecommendedAction.
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WriteAliasCommandBase.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WriteAliasCommandBase.cs
index 82c9c9f6557..efef3b5ea65 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WriteAliasCommandBase.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WriteAliasCommandBase.cs
@@ -36,7 +36,7 @@ public class WriteAliasCommandBase : PSCmdlet
         /// for new aliases).
         /// </summary>
         [Parameter]
-        public ScopedItemOptions Option { get; set; } = ScopedItemOptions.None;
+        public ScopedItemOptions Option { get; set; }
 
         /// <summary>
         /// If set to true, the alias that is set is passed to the pipeline.
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WriteConsoleCmdlet.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WriteConsoleCmdlet.cs
index 6bfad511406..e9a1018459d 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WriteConsoleCmdlet.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WriteConsoleCmdlet.cs
@@ -18,7 +18,7 @@ public sealed class WriteHostCommand : ConsoleColorCmdlet
         /// </summary>
         [Parameter(Position = 0, ValueFromRemainingArguments = true, ValueFromPipeline = true)]
         [Alias("Msg", "Message")]
-        public object Object { get; set; } = null;
+        public object Object { get; set; }
 
         /// <summary>
         /// False to add a newline to the end of the output string, true if not.
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WriteProgressCmdlet.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WriteProgressCmdlet.cs
index 93a1c392c11..2135ffa99d3 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WriteProgressCmdlet.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WriteProgressCmdlet.cs
@@ -37,7 +37,7 @@ public sealed class WriteProgressCommand : PSCmdlet
         /// </summary>
         [Parameter(Position = 2)]
         [ValidateRange(0, Int32.MaxValue)]
-        public int Id { get; set; } = 0;
+        public int Id { get; set; }
 
         /// <summary>
         /// Percentage completion of the activity, or -1 if n/a.
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/XmlCommands.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/XmlCommands.cs
index 0e86cdbfa18..c0093bd6959 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/XmlCommands.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/XmlCommands.cs
@@ -32,7 +32,7 @@ public sealed class ExportClixmlCommand : PSCmdlet, IDisposable
         /// </summary>
         [Parameter]
         [ValidateRange(1, int.MaxValue)]
-        public int Depth { get; set; } = 0;
+        public int Depth { get; set; }
 
         /// <summary>
         /// Mandatory file name to write to.
@@ -388,7 +388,7 @@ public sealed class ConvertToXmlCommand : PSCmdlet, IDisposable
         /// </summary>
         [Parameter(HelpMessage = "Specifies how many levels of contained objects should be included in the XML representation")]
         [ValidateRange(1, int.MaxValue)]
-        public int Depth { get; set; } = 0;
+        public int Depth { get; set; }
 
         /// <summary>
         /// Input Object which is written to XML format.

From 707509005144329a95f581901902bd54030f185b Mon Sep 17 00:00:00 2001
From: xtqqczze <xtqqczze@gmail.com>
Date: Thu, 3 Dec 2020 19:31:21 +0000
Subject: [PATCH 2/3] revert changes to enums

address @iSazonov review
---
 .../commands/management/PingPathCommand.cs                    | 2 +-
 .../commands/utility/AddType.cs                               | 4 ++--
 .../commands/utility/ExportAliasCommand.cs                    | 2 +-
 .../commands/utility/Var.cs                                   | 2 +-
 .../utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs     | 2 +-
 .../commands/utility/Write.cs                                 | 2 +-
 .../commands/utility/WriteAliasCommandBase.cs                 | 2 +-
 7 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/Microsoft.PowerShell.Commands.Management/commands/management/PingPathCommand.cs b/src/Microsoft.PowerShell.Commands.Management/commands/management/PingPathCommand.cs
index 43694f89d54..197ffa694bd 100644
--- a/src/Microsoft.PowerShell.Commands.Management/commands/management/PingPathCommand.cs
+++ b/src/Microsoft.PowerShell.Commands.Management/commands/management/PingPathCommand.cs
@@ -109,7 +109,7 @@ public override string[] Exclude
         /// </summary>
         [Parameter]
         [Alias("Type")]
-        public TestPathType PathType { get; set; }
+        public TestPathType PathType { get; set; } = TestPathType.Any;
 
         /// <summary>
         /// Gets or sets the IsValid parameter.
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/AddType.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/AddType.cs
index 30a6789653f..a2ffec58392 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/AddType.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/AddType.cs
@@ -280,7 +280,7 @@ private void ProcessPaths(List<string> resolvedPaths)
         /// </summary>
         [Parameter(ParameterSetName = FromSourceParameterSetName)]
         [Parameter(ParameterSetName = FromMemberParameterSetName)]
-        public Language Language { get; set; }
+        public Language Language { get; set; } = Language.CSharp;
 
         /// <summary>
         /// Any reference DLLs to use in the compilation.
@@ -392,7 +392,7 @@ public string OutputAssembly
         [Parameter(ParameterSetName = FromPathParameterSetName)]
         [Parameter(ParameterSetName = FromLiteralPathParameterSetName)]
         [Alias("OT")]
-        public OutputAssemblyType OutputType { get; set; }
+        public OutputAssemblyType OutputType { get; set; } = OutputAssemblyType.Library;
 
         /// <summary>
         /// Flag to pass the resulting types along.
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/ExportAliasCommand.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/ExportAliasCommand.cs
index b256c0f8632..431f30a3dcc 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/ExportAliasCommand.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/ExportAliasCommand.cs
@@ -109,7 +109,7 @@ public SwitchParameter PassThru
         /// Parameter that determines the format of the file created.
         /// </summary>
         [Parameter]
-        public ExportAliasFormat As { get; set; }
+        public ExportAliasFormat As { get; set; } = ExportAliasFormat.Csv;
 
         /// <summary>
         /// Property that sets append parameter.
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Var.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Var.cs
index 06cae529d46..6f379462cfe 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Var.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Var.cs
@@ -401,7 +401,7 @@ public sealed class NewVariableCommand : VariableCommandBase
         /// be ReadOnly, Constant, and/or Private.
         /// </summary>
         [Parameter]
-        public ScopedItemOptions Option { get; set; }
+        public ScopedItemOptions Option { get; set; } = ScopedItemOptions.None;
 
         /// <summary>
         /// Specifies the visibility of the new variable...
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs
index 4bf9e353536..e10f3d9345c 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs
@@ -139,7 +139,7 @@ public abstract partial class WebRequestPSCmdlet : PSCmdlet
         /// OAuth/Bearer: Requires Token.
         /// </summary>
         [Parameter]
-        public virtual WebAuthenticationType Authentication { get; set; }
+        public virtual WebAuthenticationType Authentication { get; set; } = WebAuthenticationType.None;
 
         /// <summary>
         /// Gets or sets the Credential property.
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Write.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Write.cs
index 35e1bc8542a..baf18faac4f 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Write.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Write.cs
@@ -240,7 +240,7 @@ public class WriteOrThrowErrorCommand : PSCmdlet
         /// </summary>
         [Parameter(ParameterSetName = "NoException")]
         [Parameter(ParameterSetName = "WithException")]
-        public ErrorCategory Category { get; set; }
+        public ErrorCategory Category { get; set; } = ErrorCategory.NotSpecified;
 
         /// <summary>
         /// ErrorRecord.ErrorId.
diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WriteAliasCommandBase.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WriteAliasCommandBase.cs
index efef3b5ea65..82c9c9f6557 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WriteAliasCommandBase.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WriteAliasCommandBase.cs
@@ -36,7 +36,7 @@ public class WriteAliasCommandBase : PSCmdlet
         /// for new aliases).
         /// </summary>
         [Parameter]
-        public ScopedItemOptions Option { get; set; }
+        public ScopedItemOptions Option { get; set; } = ScopedItemOptions.None;
 
         /// <summary>
         /// If set to true, the alias that is set is passed to the pipeline.

From 3641aaa11c78d2e65eaa4b2c3527b550e1a98d5c Mon Sep 17 00:00:00 2001
From: xtqqczze <xtqqczze@gmail.com>
Date: Fri, 4 Dec 2020 09:49:05 +0000
Subject: [PATCH 3/3] revert change

address @iSazonov review
---
 .../utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs       | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs
index e10f3d9345c..6102a66625d 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs
@@ -178,7 +178,7 @@ public abstract partial class WebRequestPSCmdlet : PSCmdlet
         /// Gets or sets the TLS/SSL protocol used by the Web Cmdlet.
         /// </summary>
         [Parameter]
-        public virtual WebSslProtocol SslProtocol { get; set; }
+        public virtual WebSslProtocol SslProtocol { get; set; } = WebSslProtocol.Default;
 
         /// <summary>
         /// Gets or sets the Token property. Token is required by Authentication OAuth and Bearer.