Use Type.EmptyTypes and Array.Empty<T>() to replace our custom code of the same functionality (#9042)

src/Microsoft.PowerShell.Commands.Diagnostics/GetCounterCommand.cs

@@ -171,7 +171,7 @@ namespace Microsoft.PowerShell.Commands
             set { _computerName = value; }
         }
 
-        private string[] _computerName = new string[0];
+        private string[] _computerName = Array.Empty<string>();
 
         private ResourceManager _resourceMgr = null;
 

src/Microsoft.PowerShell.Commands.Diagnostics/ImportCounterCommand.cs

@@ -82,7 +82,7 @@ namespace Microsoft.PowerShell.Commands
             set { _listSet = value; }
         }
 
-        private string[] _listSet = new string[0];
+        private string[] _listSet = Array.Empty<string>();
 
         //
         // StartTime parameter
@@ -138,7 +138,7 @@ namespace Microsoft.PowerShell.Commands
             set { _counter = value; }
         }
 
-        private string[] _counter = new string[0];
+        private string[] _counter = Array.Empty<string>();
 
         //
         // Summary switch

src/Microsoft.PowerShell.Commands.Management/commands/management/CombinePathCommand.cs

@@ -41,7 +41,7 @@ namespace Microsoft.PowerShell.Commands
         [AllowNull]
         [AllowEmptyString]
         [AllowEmptyCollection]
-        public string[] AdditionalChildPath { get; set; } = Utils.EmptyArray<string>();
+        public string[] AdditionalChildPath { get; set; } = Array.Empty<string>();
 
         /// <summary>
         /// Determines if the path should be resolved after being joined.

src/Microsoft.PowerShell.Commands.Management/commands/management/ControlPanelItemCommand.cs

@@ -268,7 +268,7 @@ $result
                     using (System.Management.Automation.PowerShell ps = System.Management.Automation.PowerShell.Create())
                     {
                         ps.AddScript(TestHeadlessServerScript);
-                        Collection<PSObject> psObjectCollection = ps.Invoke(new object[0]);
+                        Collection<PSObject> psObjectCollection = ps.Invoke(Array.Empty<object>());
                         Dbg.Assert(psObjectCollection != null && psObjectCollection.Count == 1, "invoke should never return null, there should be only one return item");
                         if (LanguagePrimitives.IsTrue(PSObject.Base(psObjectCollection[0])))
                         {

src/Microsoft.PowerShell.Commands.Management/commands/management/Eventlog.cs

@@ -52,7 +52,7 @@ namespace Microsoft.PowerShell.Commands
         [ValidateNotNullOrEmpty()]
         [Alias("Cn")]
         [SuppressMessage("Microsoft.Performance", "CA1819:PropertiesShouldNotReturnArrays")]
-        public string[] ComputerName { get; set; } = new string[0];
+        public string[] ComputerName { get; set; } = Array.Empty<string>();
 
         /// <summary>
         /// Read only this number of entries.

src/Microsoft.PowerShell.Commands.Management/commands/management/MovePropertyCommand.cs

@@ -58,7 +58,7 @@ namespace Microsoft.PowerShell.Commands
             {
                 if (value == null)
                 {
-                    value = Utils.EmptyArray<string>();
+                    value = Array.Empty<string>();
                 }
 
                 _property = value;
@@ -111,7 +111,7 @@ namespace Microsoft.PowerShell.Commands
         /// <summary>
         /// The property to be created.
         /// </summary>
-        private string[] _property = new string[0];
+        private string[] _property = Array.Empty<string>();
 
         #endregion parameter data
 

src/Microsoft.PowerShell.Commands.Management/commands/management/Navigation.cs

@@ -188,7 +188,7 @@ namespace Microsoft.PowerShell.Commands
         {
             get;
             set;
-        } = new string[0];
+        } = Array.Empty<string>();
 
         /// <summary>
         /// Gets or sets the exclude property.
@@ -202,7 +202,7 @@ namespace Microsoft.PowerShell.Commands
         {
             get;
             set;
-        } = new string[0];
+        } = Array.Empty<string>();
 
         /// <summary>
         /// Gets or sets the force property.
@@ -351,7 +351,7 @@ namespace Microsoft.PowerShell.Commands
         public string[] PSProvider
         {
             get => _provider;
-            set => _provider = value ?? Utils.EmptyArray<string>();
+            set => _provider = value ?? Array.Empty<string>();
         }
 
         /// <summary>
@@ -401,7 +401,7 @@ namespace Microsoft.PowerShell.Commands
         /// <summary>
         /// The name of the provider from which to return the current location.
         /// </summary>
-        private string[] _provider = new string[0];
+        private string[] _provider = Array.Empty<string>();
 
         #endregion Location parameter set data
 
@@ -1522,7 +1522,7 @@ namespace Microsoft.PowerShell.Commands
         public string[] PSProvider
         {
             get => _provider;
-            set => _provider = value ?? Utils.EmptyArray<string>();
+            set => _provider = value ?? Array.Empty<string>();
         }
 
         /// <summary>
@@ -1563,7 +1563,7 @@ namespace Microsoft.PowerShell.Commands
         /// <summary>
         /// The name of the provider(s) for which to remove all drives.
         /// </summary>
-        private string[] _provider = new string[0];
+        private string[] _provider = Array.Empty<string>();
 
         #endregion Command data
 
@@ -1717,7 +1717,7 @@ namespace Microsoft.PowerShell.Commands
         public string[] PSProvider
         {
             get => _provider;
-            set => _provider = value ?? Utils.EmptyArray<string>();
+            set => _provider = value ?? Array.Empty<string>();
         }
 
         #endregion Command parameters
@@ -1732,7 +1732,7 @@ namespace Microsoft.PowerShell.Commands
         /// <summary>
         /// The provider ID for the drives you want to see.
         /// </summary>
-        private string[] _provider = new string[0];
+        private string[] _provider = Array.Empty<string>();
 
         #endregion Command data
 
@@ -4137,7 +4137,7 @@ namespace Microsoft.PowerShell.Commands
         public string[] PSProvider
         {
             get => _provider;
-            set => _provider = value ?? Utils.EmptyArray<string>();
+            set => _provider = value ?? Array.Empty<string>();
         }
 
         #endregion Command parameters
@@ -4146,7 +4146,7 @@ namespace Microsoft.PowerShell.Commands
         /// <summary>
         /// The string ID of the provider to remove.
         /// </summary>
-        private string[] _provider = new string[0];
+        private string[] _provider = Array.Empty<string>();
 
         #endregion Command data
 

src/Microsoft.PowerShell.Commands.Management/commands/management/PropertyCommandBase.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT License.
 
+using System;
 using System.Management.Automation;
 using Dbg = System.Management.Automation;
 
@@ -70,7 +71,7 @@ namespace Microsoft.PowerShell.Commands
         /// <summary>
         /// The path to the item.
         /// </summary>
-        internal string[] paths = new string[0];
+        internal string[] paths = Array.Empty<string>();
 
         #endregion parameter data
     }

src/Microsoft.PowerShell.Commands.Management/commands/management/RemovePropertyCommand.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT License.
 
+using System;
 using System.Management.Automation;
 using Dbg = System.Management.Automation;
 
@@ -62,7 +63,7 @@ namespace Microsoft.PowerShell.Commands
         {
             get { return _property; }
 
-            set { _property = value ?? Utils.EmptyArray<string>(); }
+            set { _property = value ?? Array.Empty<string>(); }
         }
 
         /// <summary>
@@ -120,7 +121,7 @@ namespace Microsoft.PowerShell.Commands
         /// <summary>
         /// The property to be created.
         /// </summary>
-        private string[] _property = new string[0];
+        private string[] _property = Array.Empty<string>();
 
         #endregion parameter data
 

src/Microsoft.PowerShell.Commands.Management/commands/management/UseTransactionCommand.cs

@@ -43,7 +43,7 @@ namespace Microsoft.PowerShell.Commands
             {
                 try
                 {
-                    var emptyArray = Utils.EmptyArray<object>();
+                    var emptyArray = Array.Empty<object>();
                     _transactedScript.InvokeUsingCmdlet(
                         contextCmdlet: this,
                         useLocalScope: false,

src/Microsoft.PowerShell.Commands.Management/commands/management/WriteContentCommandBase.cs

@@ -98,7 +98,7 @@ namespace Microsoft.PowerShell.Commands
 
             if (_content == null)
             {
-                _content = new object[0];
+                _content = Array.Empty<object>();
             }
 
             if (_pipingPaths)

src/Microsoft.PowerShell.Commands.Utility/commands/utility/AddType.cs

@@ -135,7 +135,7 @@ namespace Microsoft.PowerShell.Commands
         [ValidateNotNull()]
         [Alias("Using")]
         [SuppressMessage("Microsoft.Performance", "CA1819:PropertiesShouldNotReturnArrays")]
-        public string[] UsingNamespace { get; set; } = Utils.EmptyArray<string>();
+        public string[] UsingNamespace { get; set; } = Array.Empty<string>();
 
         /// <summary>
         /// The path to the source code or DLL to load.
@@ -310,7 +310,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] referencedAssemblies = Utils.EmptyArray<string>();
+        private string[] referencedAssemblies = Array.Empty<string>();
 
         /// <summary>
         /// The path to the output assembly.

src/Microsoft.PowerShell.Commands.Utility/commands/utility/FormatAndOutput/common/GetFormatDataCommand.cs

@@ -42,7 +42,7 @@ namespace Microsoft.PowerShell.Commands
 
                 if (_typename == null)
                 {
-                    _filter = Utils.EmptyArray<WildcardPattern>();
+                    _filter = Array.Empty<WildcardPattern>();
                 }
                 else
                 {

src/Microsoft.PowerShell.Commands.Utility/commands/utility/GetAliasCommand.cs

@@ -41,10 +41,10 @@ namespace Microsoft.PowerShell.Commands
         {
             get { return _excludes; }
 
-            set { _excludes = value ?? new string[0]; }
+            set { _excludes = value ?? Array.Empty<string>(); }
         }
 
-        private string[] _excludes = new string[0];
+        private string[] _excludes = Array.Empty<string>();
 
         /// <summary>
         /// The scope parameter for the command determines

src/Microsoft.PowerShell.Commands.Utility/commands/utility/ImplicitRemotingCommands.cs

@@ -440,7 +440,7 @@ namespace Microsoft.PowerShell.Commands
             {
                 if (value == null)
                 {
-                    value = new string[0];
+                    value = Array.Empty<string>();
                 }
 
                 _PSSnapins = value;
@@ -449,7 +449,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] _PSSnapins = new string[0];
+        private string[] _PSSnapins = Array.Empty<string>();
         internal bool IsModuleSpecified = false;
         /// <summary>
         /// Gets or sets the FullyQualifiedModule parameter to the cmdlet.

src/Microsoft.PowerShell.Commands.Utility/commands/utility/InvokeCommandCmdlet.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT License.
 
+using System;
 using System.Management.Automation;
 using System.Management.Automation.Internal;
 
@@ -42,7 +43,7 @@ namespace Microsoft.PowerShell.Commands
                 myScriptBlock.LanguageMode = PSLanguageMode.ConstrainedLanguage;
             }
 
-            var emptyArray = Utils.EmptyArray<object>();
+            var emptyArray = Array.Empty<object>();
             myScriptBlock.InvokeUsingCmdlet(
                 contextCmdlet: this,
                 useLocalScope: false,

src/Microsoft.PowerShell.Commands.Utility/commands/utility/TimeExpressionCommand.cs

@@ -63,7 +63,7 @@ namespace Microsoft.PowerShell.Commands
                 useLocalScope: false,
                 errorHandlingBehavior: ScriptBlock.ErrorHandlingBehavior.WriteToCurrentErrorPipe,
                 dollarUnder: InputObject,   // $_
-                input: new object[0], // $input
+                input: Array.Empty<object>(), // $input
                 scriptThis: AutomationNull.Value,
                 outputPipe: new Pipe { NullPipe = true },
                 invocationInfo: null);

src/Microsoft.PowerShell.Commands.Utility/commands/utility/Update-Data.cs

@@ -24,14 +24,14 @@ namespace Microsoft.PowerShell.Commands
             ParameterSetName = FileParameterSet)]
         [Alias("PSPath", "Path")]
         [ValidateNotNull]
-        public string[] AppendPath { set; get; } = Utils.EmptyArray<string>();
+        public string[] AppendPath { set; get; } = Array.Empty<string>();
 
         /// <summary>
         /// Files to prepend to the existing set.
         /// </summary>
         [Parameter(ParameterSetName = FileParameterSet)]
         [ValidateNotNull]
-        public string[] PrependPath { set; get; } = Utils.EmptyArray<string>();
+        public string[] PrependPath { set; get; } = Array.Empty<string>();
 
         private static void ReportWrongExtension(string file, string errorId, PSCmdlet cmdlet)
         {

src/Microsoft.PowerShell.Commands.Utility/commands/utility/Var.cs

@@ -42,14 +42,14 @@ namespace Microsoft.PowerShell.Commands
             {
                 if (value == null)
                 {
-                    value = new string[0];
+                    value = Array.Empty<string>();
                 }
 
                 _include = value;
             }
         }
 
-        private string[] _include = new string[0];
+        private string[] _include = Array.Empty<string>();
 
         /// <summary>
         /// The Exclude parameter for all the variable commands.
@@ -65,14 +65,14 @@ namespace Microsoft.PowerShell.Commands
             {
                 if (value == null)
                 {
-                    value = new string[0];
+                    value = Array.Empty<string>();
                 }
 
                 _exclude = value;
             }
         }
 
-        private string[] _exclude = new string[0];
+        private string[] _exclude = Array.Empty<string>();
 
         #region helpers
 

src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/JsonObject.cs

@@ -775,7 +775,7 @@ namespace Microsoft.PowerShell.Commands
                         object value;
                         try
                         {
-                            value = getMethod.Invoke(o, new object[0]);
+                            value = getMethod.Invoke(o, Array.Empty<object>());
                         }
                         catch (Exception)
                         {

src/Microsoft.PowerShell.Commands.Utility/commands/utility/new-object.cs

@@ -203,7 +203,7 @@ namespace Microsoft.PowerShell.Commands
 
                 if (ArgumentList == null || ArgumentList.Length == 0)
                 {
-                    ConstructorInfo ci = type.GetConstructor(PSTypeExtensions.EmptyTypes);
+                    ConstructorInfo ci = type.GetConstructor(Type.EmptyTypes);
                     if (ci != null && ci.IsPublic)
                     {
                         _newObject = CallConstructor(type, new ConstructorInfo[] { ci }, new object[] { });

src/Microsoft.PowerShell.Commands.Utility/commands/utility/neweventcommand.cs

@@ -76,7 +76,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private PSObject[] _eventArguments = new PSObject[0];
+        private PSObject[] _eventArguments = Array.Empty<PSObject>();
 
         /// <summary>
         /// Data relating to this event.

src/Microsoft.PowerShell.Commands.Utility/commands/utility/trace/TraceExpressionCommand.cs

@@ -262,7 +262,7 @@ namespace Microsoft.PowerShell.Commands
                 dollarUnder: InputObject,
                 input: new object[] { InputObject },
                 scriptThis: AutomationNull.Value,
-                args: Utils.EmptyArray<object>());
+                args: Array.Empty<object>());
         }
 
         private object StepCommand()

src/Microsoft.PowerShell.Commands.Utility/commands/utility/trace/TraceListenerCommandBase.cs

@@ -25,7 +25,7 @@ namespace Microsoft.PowerShell.Commands
         /// The TraceSource parameter determines which TraceSource categories the
         /// operation will take place on.
         /// </summary>
-        internal string[] NameInternal { get; set; } = new string[0];
+        internal string[] NameInternal { get; set; } = Array.Empty<string>();
 
         /// <summary>
         /// The flags to be set on the TraceSource.

src/Microsoft.PowerShell.CoreCLR.Eventing/DotNetCode/Eventing/Reader/EventLogRecord.cs

@@ -311,7 +311,7 @@ namespace System.Diagnostics.Eventing.Reader
             if (values == null) return this.FormatDescription();
 
             // copy the value IEnumerable to an array.
-            string[] theValues = new string[0];
+            string[] theValues = Array.Empty<string>();
             int i = 0;
             foreach (object o in values)
             {

src/Microsoft.PowerShell.CoreCLR.Eventing/DotNetCode/Eventing/Reader/NativeWrapper.cs

@@ -1227,32 +1227,32 @@ namespace System.Diagnostics.Eventing.Reader
                     else return false;
                 case (int)UnsafeNativeMethods.EvtVariantType.EvtVarTypeBinary:
                 case ((int)UnsafeNativeMethods.EvtMasks.EVT_VARIANT_TYPE_ARRAY | (int)UnsafeNativeMethods.EvtVariantType.EvtVarTypeByte):
-                    if (val.Reference == IntPtr.Zero) return new byte[0];
+                    if (val.Reference == IntPtr.Zero) return Array.Empty<byte>();
                     byte[] arByte = new byte[val.Count];
                     Marshal.Copy(val.Reference, arByte, 0, (int)val.Count);
                     return arByte;
                 case ((int)UnsafeNativeMethods.EvtMasks.EVT_VARIANT_TYPE_ARRAY | (int)UnsafeNativeMethods.EvtVariantType.EvtVarTypeInt16):
-                    if (val.Reference == IntPtr.Zero) return new Int16[0];
+                    if (val.Reference == IntPtr.Zero) return Array.Empty<Int16>();
                     Int16[] arInt16 = new Int16[val.Count];
                     Marshal.Copy(val.Reference, arInt16, 0, (int)val.Count);
                     return arInt16;
                 case ((int)UnsafeNativeMethods.EvtMasks.EVT_VARIANT_TYPE_ARRAY | (int)UnsafeNativeMethods.EvtVariantType.EvtVarTypeInt32):
-                    if (val.Reference == IntPtr.Zero) return new Int32[0];
+                    if (val.Reference == IntPtr.Zero) return Array.Empty<Int32>();
                     Int32[] arInt32 = new Int32[val.Count];
                     Marshal.Copy(val.Reference, arInt32, 0, (int)val.Count);
                     return arInt32;
                 case ((int)UnsafeNativeMethods.EvtMasks.EVT_VARIANT_TYPE_ARRAY | (int)UnsafeNativeMethods.EvtVariantType.EvtVarTypeInt64):
-                    if (val.Reference == IntPtr.Zero) return new Int64[0];
+                    if (val.Reference == IntPtr.Zero) return Array.Empty<Int64>();
                     Int64[] arInt64 = new Int64[val.Count];
                     Marshal.Copy(val.Reference, arInt64, 0, (int)val.Count);
                     return arInt64;
                 case ((int)UnsafeNativeMethods.EvtMasks.EVT_VARIANT_TYPE_ARRAY | (int)UnsafeNativeMethods.EvtVariantType.EvtVarTypeSingle):
-                    if (val.Reference == IntPtr.Zero) return new Single[0];
+                    if (val.Reference == IntPtr.Zero) return Array.Empty<Single>();
                     Single[] arSingle = new Single[val.Count];
                     Marshal.Copy(val.Reference, arSingle, 0, (int)val.Count);
                     return arSingle;
                 case ((int)UnsafeNativeMethods.EvtMasks.EVT_VARIANT_TYPE_ARRAY | (int)UnsafeNativeMethods.EvtVariantType.EvtVarTypeDouble):
-                    if (val.Reference == IntPtr.Zero) return new Double[0];
+                    if (val.Reference == IntPtr.Zero) return Array.Empty<Double>();
                     Double[] arDouble = new Double[val.Count];
                     Marshal.Copy(val.Reference, arDouble, 0, (int)val.Count);
                     return arDouble;
@@ -1351,7 +1351,7 @@ namespace System.Diagnostics.Eventing.Reader
             IntPtr ptr = val.Reference;
             if (ptr == IntPtr.Zero)
             {
-                return new bool[0];
+                return Array.Empty<bool>();
             }
             else
             {
@@ -1373,7 +1373,7 @@ namespace System.Diagnostics.Eventing.Reader
             IntPtr ptr = val.Reference;
             if (ptr == IntPtr.Zero)
             {
-                return new DateTime[0];
+                return Array.Empty<DateTime>();
             }
             else
             {
@@ -1394,7 +1394,7 @@ namespace System.Diagnostics.Eventing.Reader
             IntPtr ptr = val.Reference;
             if (ptr == IntPtr.Zero)
             {
-                return new DateTime[0];
+                return Array.Empty<DateTime>();
             }
             else
             {
@@ -1415,7 +1415,7 @@ namespace System.Diagnostics.Eventing.Reader
         {
             if (val.Reference == IntPtr.Zero)
             {
-                return new string[0];
+                return Array.Empty<string>();
             }
             else
             {

src/Microsoft.PowerShell.Security/security/AclCommands.cs

@@ -608,12 +608,12 @@ namespace Microsoft.PowerShell.Commands
         /// <summary>
         /// The glob string used to determine which items are included.
         /// </summary>
-        private string[] _include = new string[0];
+        private string[] _include = Array.Empty<string>();
 
         /// <summary>
         /// The glob string used to determine which items are excluded.
         /// </summary>
-        private string[] _exclude = new string[0];
+        private string[] _exclude = Array.Empty<string>();
     }
 
 #if !UNIX

src/System.Management.Automation/DscSupport/CimDSCParser.cs

@@ -2797,7 +2797,7 @@ namespace Microsoft.PowerShell.DesiredStateConfiguration.Internal
             else if (!type.IsAbstract)
             {
                 // Must have default constructor, at least 1 public property/field, and no base classes
-                if (type.GetConstructor(PSTypeExtensions.EmptyTypes) == null)
+                if (type.GetConstructor(Type.EmptyTypes) == null)
                 {
                     missingDefaultConstructor = true;
                 }

src/System.Management.Automation/FormatAndOutput/common/BaseCommand.cs

@@ -92,7 +92,7 @@ namespace Microsoft.PowerShell.Commands.Internal.Format
             {
                 // if Process() never got called, no sub pipeline
                 // ever got created, hence we just return an empty array
-                return new object[0];
+                return Array.Empty<object>();
             }
 
             PipelineProcessor ppTemp = _pp;

src/System.Management.Automation/FormatAndOutput/common/Utilities/MshObjectUtil.cs

@@ -236,7 +236,7 @@ namespace Microsoft.PowerShell.Commands.Internal.Format
             }
             else
             {
-                MethodInfo toStringMethod = x.GetType().GetMethod("ToString", PSTypeExtensions.EmptyTypes);
+                MethodInfo toStringMethod = x.GetType().GetMethod("ToString", Type.EmptyTypes);
                 // TODO:CORECLR double check with CORE CLR that x.GetType() == toStringMethod.ReflectedType
                 // Check if the given object "x" implements "toString" method. Do that by comparing "DeclaringType" which 'Gets the class that declares this member' and the object type
                 if (toStringMethod.DeclaringType == x.GetType())

src/System.Management.Automation/FormatAndOutput/common/Utilities/Mshexpression.cs

@@ -313,7 +313,7 @@ namespace Microsoft.PowerShell.Commands
                         dollarUnder: target,
                         input: AutomationNull.Value,
                         scriptThis: AutomationNull.Value,
-                        args: Utils.EmptyArray<object>());
+                        args: Array.Empty<object>());
                 }
                 else
                 {

src/System.Management.Automation/cimSupport/cmdletization/EnumWriter.cs

@@ -53,7 +53,7 @@ namespace Microsoft.PowerShell.Cmdletization
 
             if (enumMetadata.BitwiseFlagsSpecified && enumMetadata.BitwiseFlags)
             {
-                var cab = new CustomAttributeBuilder(typeof(FlagsAttribute).GetConstructor(PSTypeExtensions.EmptyTypes), new object[0]);
+                var cab = new CustomAttributeBuilder(typeof(FlagsAttribute).GetConstructor(Type.EmptyTypes), Array.Empty<object>());
                 eb.SetCustomAttribute(cab);
             }
 

src/System.Management.Automation/cimSupport/cmdletization/xml/CoreCLR/cmdlets-over-objects.xmlSerializer.autogen.cs

@@ -2791,7 +2791,7 @@ namespace Microsoft.PowerShell.Cmdletization.Xml
             if (isNull) return null;
             global::System.Object o;
             o = new global::System.Object();
-            bool[] paramsRead = new bool[0];
+            bool[] paramsRead = Array.Empty<bool>();
             while (Reader.MoveToNextAttribute())
             {
                 if (!IsXmlnsAttribute(Reader.Name))

src/System.Management.Automation/cimSupport/cmdletization/xml/cmdlets-over-objects.xmlSerializer.autogen.cs

@@ -5143,7 +5143,7 @@ namespace Microsoft.PowerShell.Cmdletization.Xml
             if (isNull) return null;
             global::System.Object o;
             o = new global::System.Object();
-            bool[] paramsRead = new bool[0];
+            bool[] paramsRead = Array.Empty<bool>();
             while (Reader.MoveToNextAttribute())
             {
                 if (!IsXmlnsAttribute(Reader.Name))

src/System.Management.Automation/engine/Attributes.cs

@@ -506,7 +506,7 @@ namespace System.Management.Automation
             }
             else
             {
-                Type = Utils.EmptyArray<PSTypeName>();
+                Type = Array.Empty<PSTypeName>();
             }
         }
 
@@ -526,7 +526,7 @@ namespace System.Management.Automation
             }
             else
             {
-                Type = Utils.EmptyArray<PSTypeName>();
+                Type = Array.Empty<PSTypeName>();
             }
         }
 
@@ -1427,7 +1427,7 @@ namespace System.Management.Automation
                 dollarUnder: LanguagePrimitives.AsPSObjectOrNull(element),
                 input: AutomationNull.Value,
                 scriptThis: AutomationNull.Value,
-                args: Utils.EmptyArray<object>());
+                args: Array.Empty<object>());
 
             if (!LanguagePrimitives.IsTrue(result))
             {

src/System.Management.Automation/engine/COM/ComUtil.cs

@@ -423,7 +423,7 @@ namespace System.Management.Automation
                         // The COM object is a collection and also a IDispatch interface, so we try to get a
                         // IEnumVARIANT interface out of it by invoking its '_NewEnum (DispId: -4)' function.
                         var result = ComInvoker.Invoke(target, ComTypeInfo.DISPID_NEWENUM,
-                                                        args: Utils.EmptyArray<object>(), byRef: null,
+                                                        args: Array.Empty<object>(), byRef: null,
                                                         invokeKind: comTypeInfo.NewEnumInvokeKind.Value);
                         enumVariant = result as COM.IEnumVARIANT;
                         if (enumVariant != null)

src/System.Management.Automation/engine/CmdletParameterBinderController.cs

@@ -3792,7 +3792,7 @@ namespace System.Management.Automation
                     {
                         try
                         {
-                            output = script.DoInvoke(inputToOperateOn, inputToOperateOn, Utils.EmptyArray<object>());
+                            output = script.DoInvoke(inputToOperateOn, inputToOperateOn, Array.Empty<object>());
                             delayedScriptBlock.Value._evaluatedArgument = output;
                         }
                         catch (RuntimeException runtimeException)

src/System.Management.Automation/engine/ComInterop/ComEventSink.cs

@@ -219,17 +219,17 @@ namespace System.Management.Automation.ComInterop
 
         public FieldInfo[] GetFields(BindingFlags bindingAttr)
         {
-            return Utils.EmptyArray<FieldInfo>();
+            return Array.Empty<FieldInfo>();
         }
 
         public MemberInfo[] GetMember(string name, BindingFlags bindingAttr)
         {
-            return Utils.EmptyArray<MemberInfo>();
+            return Array.Empty<MemberInfo>();
         }
 
         public MemberInfo[] GetMembers(BindingFlags bindingAttr)
         {
-            return Utils.EmptyArray<MemberInfo>();
+            return Array.Empty<MemberInfo>();
         }
 
         public MethodInfo GetMethod(string name, BindingFlags bindingAttr)
@@ -244,7 +244,7 @@ namespace System.Management.Automation.ComInterop
 
         public MethodInfo[] GetMethods(BindingFlags bindingAttr)
         {
-            return Utils.EmptyArray<MethodInfo>();
+            return Array.Empty<MethodInfo>();
         }
 
         public PropertyInfo GetProperty(string name, BindingFlags bindingAttr, Binder binder, Type returnType, Type[] types, ParameterModifier[] modifiers)
@@ -259,7 +259,7 @@ namespace System.Management.Automation.ComInterop
 
         public PropertyInfo[] GetProperties(BindingFlags bindingAttr)
         {
-            return Utils.EmptyArray<PropertyInfo>();
+            return Array.Empty<PropertyInfo>();
         }
 
         #endregion

src/System.Management.Automation/engine/ComInterop/ComObject.cs

@@ -104,12 +104,12 @@ namespace System.Management.Automation.ComInterop
 
         internal virtual IList<string> GetMemberNames(bool dataOnly)
         {
-            return Utils.EmptyArray<string>();
+            return Array.Empty<string>();
         }
 
         internal virtual IList<KeyValuePair<string, object>> GetMembers(IEnumerable<string> names)
         {
-            return Utils.EmptyArray<KeyValuePair<string, object>>();
+            return Array.Empty<KeyValuePair<string, object>>();
         }
 
         DynamicMetaObject IDynamicMetaObjectProvider.GetMetaObject(Expression parameter)

src/System.Management.Automation/engine/ComInterop/ComRuntimeHelpers.cs

@@ -641,7 +641,7 @@ namespace System.Management.Automation.ComInterop
                     if (s_dynamicModule == null)
                     {
                         var attributes = new[] {
-                            new CustomAttributeBuilder(typeof(UnverifiableCodeAttribute).GetConstructor(Type.EmptyTypes), Utils.EmptyArray<object>()),
+                            new CustomAttributeBuilder(typeof(UnverifiableCodeAttribute).GetConstructor(Type.EmptyTypes), Array.Empty<object>()),
                             // PermissionSet(SecurityAction.Demand, Unrestricted = true)
                             new CustomAttributeBuilder(typeof(PermissionSetAttribute).GetConstructor(new Type[] { typeof(SecurityAction) }),
                                 new object[] { SecurityAction.Demand },

src/System.Management.Automation/engine/ComInterop/IDispatchComObject.cs

@@ -333,7 +333,7 @@ namespace System.Management.Automation.ComInterop
                             BindingFlags.GetProperty,
                             null,
                             RuntimeCallableWrapper,
-                            Utils.EmptyArray<object>(),
+                            Array.Empty<object>(),
                             CultureInfo.InvariantCulture
                         );
                         members.Add(new KeyValuePair<string, object>(method.Name, value));

src/System.Management.Automation/engine/ComInterop/IDispatchMetaObject.cs

@@ -150,14 +150,14 @@ namespace System.Management.Automation.ComInterop
             {
                 if (method.ParamCount == 0)
                 {
-                    return BindComInvoke(DynamicMetaObject.EmptyMetaObjects, method, new CallInfo(0), Utils.EmptyArray<bool>(), null, null);
+                    return BindComInvoke(DynamicMetaObject.EmptyMetaObjects, method, new CallInfo(0), Array.Empty<bool>(), null, null);
                 }
             }
 
             // ComGetMemberBinder does not expect callables. Try to call always.
             if (!canReturnCallables)
             {
-                return BindComInvoke(DynamicMetaObject.EmptyMetaObjects, method, new CallInfo(0), Utils.EmptyArray<bool>(), null, null);
+                return BindComInvoke(DynamicMetaObject.EmptyMetaObjects, method, new CallInfo(0), Array.Empty<bool>(), null, null);
             }
 
             return new DynamicMetaObject(

src/System.Management.Automation/engine/CommandCompletion/CommandCompletion.cs

@@ -55,7 +55,7 @@ namespace System.Management.Automation
         [SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
         public Collection<CompletionResult> CompletionMatches { get; set; }
 
-        internal static readonly IList<CompletionResult> EmptyCompletionResult = Utils.EmptyArray<CompletionResult>();
+        internal static readonly IList<CompletionResult> EmptyCompletionResult = Array.Empty<CompletionResult>();
         private static readonly CommandCompletion s_emptyCommandCompletion = new CommandCompletion(
             new Collection<CompletionResult>(EmptyCompletionResult), -1, -1, -1);
 

src/System.Management.Automation/engine/CommandDiscovery.cs

@@ -1420,7 +1420,7 @@ namespace System.Management.Automation
             {
                 s_cachedPathExtCollection = pathExt != null
                     ? pathExt.Split(Utils.Separators.PathSeparator, StringSplitOptions.RemoveEmptyEntries)
-                    : Utils.EmptyArray<string>();
+                    : Array.Empty<string>();
                 s_cachedPathExtCollectionWithPs1 = new string[s_cachedPathExtCollection.Length + 1];
                 s_cachedPathExtCollectionWithPs1[0] = StringLiterals.PowerShellScriptFileExtension;
                 Array.Copy(s_cachedPathExtCollection, 0, s_cachedPathExtCollectionWithPs1, 1, s_cachedPathExtCollection.Length);

src/System.Management.Automation/engine/CommandPathSearch.cs

@@ -349,7 +349,7 @@ namespace System.Management.Automation
         {
             _lookupPathsEnumerator = _lookupPaths.GetEnumerator();
             _patternEnumerator = _patterns.GetEnumerator();
-            _currentDirectoryResults = Utils.EmptyArray<string>();
+            _currentDirectoryResults = Array.Empty<string>();
             _currentDirectoryResultsEnumerator = _currentDirectoryResults.GetEnumerator();
             _justReset = true;
         }
@@ -468,7 +468,7 @@ namespace System.Management.Automation
                 // accessible
             }
 
-            _currentDirectoryResults = result ?? Utils.EmptyArray<string>();
+            _currentDirectoryResults = result ?? Array.Empty<string>();
             _currentDirectoryResultsEnumerator = _currentDirectoryResults.GetEnumerator();
         }
 

src/System.Management.Automation/engine/CompiledCommandParameter.cs

@@ -89,13 +89,13 @@ namespace System.Management.Automation
             }
 
             this.ValidationAttributes = validationAttributes == null
-                ? Utils.EmptyArray<ValidateArgumentsAttribute>()
+                ? Array.Empty<ValidateArgumentsAttribute>()
                 : validationAttributes.ToArray();
             this.ArgumentTransformationAttributes = argTransformationAttributes == null
-                ? Utils.EmptyArray<ArgumentTransformationAttribute>()
+                ? Array.Empty<ArgumentTransformationAttribute>()
                 : argTransformationAttributes.ToArray();
             this.Aliases = aliases == null
-                ? Utils.EmptyArray<string>()
+                ? Array.Empty<string>()
                 : aliases.ToArray();
         }
 
@@ -180,12 +180,12 @@ namespace System.Management.Automation
             }
 
             this.ValidationAttributes = validationAttributes == null
-                ? Utils.EmptyArray<ValidateArgumentsAttribute>()
+                ? Array.Empty<ValidateArgumentsAttribute>()
                 : validationAttributes.ToArray();
             this.ArgumentTransformationAttributes = argTransformationAttributes == null
-                ? Utils.EmptyArray<ArgumentTransformationAttribute>()
+                ? Array.Empty<ArgumentTransformationAttribute>()
                 : argTransformationAttributes.ToArray();
-            this.Aliases = aliases ?? Utils.EmptyArray<string>();
+            this.Aliases = aliases ?? Array.Empty<string>();
         }
 
         #endregion ctor

src/System.Management.Automation/engine/CoreAdapter.cs

@@ -1624,7 +1624,7 @@ namespace System.Management.Automation
             int parametersLength = parameters.Length;
             if (parametersLength == 0)
             {
-                return Utils.EmptyArray<object>();
+                return Array.Empty<object>();
             }
 
             object[] retValue = new object[parametersLength];

src/System.Management.Automation/engine/ExperimentalFeature/ExperimentalFeature.cs

@@ -128,7 +128,7 @@ namespace System.Management.Automation
             //   3. We don't need to decide where/when to read the config file for the enabled experimental features,
             //      instead, it will be done when the type is used for the first time, which is always earlier than
             //      any experimental features take effect.
-            string[] enabledFeatures = Utils.EmptyArray<string>();
+            string[] enabledFeatures = Array.Empty<string>();
             try
             {
                 enabledFeatures = PowerShellConfig.Instance.GetExperimentalFeatures();

src/System.Management.Automation/engine/GetCommandCommand.cs

@@ -84,7 +84,7 @@ namespace Microsoft.PowerShell.Commands
             {
                 if (value == null)
                 {
-                    value = Utils.EmptyArray<string>();
+                    value = Array.Empty<string>();
                 }
 
                 _verbs = value;
@@ -92,7 +92,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] _verbs = Utils.EmptyArray<string>();
+        private string[] _verbs = Array.Empty<string>();
 
         /// <summary>
         /// Gets or sets the noun parameter to the cmdlet.
@@ -110,7 +110,7 @@ namespace Microsoft.PowerShell.Commands
             {
                 if (value == null)
                 {
-                    value = Utils.EmptyArray<string>();
+                    value = Array.Empty<string>();
                 }
 
                 _nouns = value;
@@ -118,7 +118,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] _nouns = Utils.EmptyArray<string>();
+        private string[] _nouns = Array.Empty<string>();
 
         /// <summary>
         /// Gets or sets the PSSnapin/Module parameter to the cmdlet.
@@ -137,7 +137,7 @@ namespace Microsoft.PowerShell.Commands
             {
                 if (value == null)
                 {
-                    value = Utils.EmptyArray<string>();
+                    value = Array.Empty<string>();
                 }
 
                 _modules = value;
@@ -147,7 +147,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] _modules = Utils.EmptyArray<string>();
+        private string[] _modules = Array.Empty<string>();
         private bool _isModuleSpecified = false;
 
         /// <summary>
@@ -173,7 +173,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private ModuleSpecification[] _moduleSpecifications = Utils.EmptyArray<ModuleSpecification>();
+        private ModuleSpecification[] _moduleSpecifications = Array.Empty<ModuleSpecification>();
         private bool _isFullyQualifiedModuleSpecified = false;
 
         /// <summary>
@@ -1496,7 +1496,7 @@ namespace Microsoft.PowerShell.Commands
 
             if (parameterSets == null)
             {
-                return Utils.EmptyArray<PSObject>();
+                return Array.Empty<PSObject>();
             }
 
             List<PSObject> returnParameterSets = new List<PSObject>(cmdInfo.ParameterSets.Count);

src/System.Management.Automation/engine/InitialSessionState.cs

@@ -5342,7 +5342,7 @@ end {
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         private static bool HasDefaultConstructor(Type type)
         {
-            return !(type.GetConstructor(PSTypeExtensions.EmptyTypes) == null);
+            return !(type.GetConstructor(Type.EmptyTypes) == null);
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]

src/System.Management.Automation/engine/InternalCommands.cs

@@ -269,7 +269,7 @@ namespace Microsoft.PowerShell.Commands
             if (_scripts[0] == null)
                 return;
 
-            var emptyArray = Utils.EmptyArray<object>();
+            var emptyArray = Array.Empty<object>();
             _scripts[0].InvokeUsingCmdlet(
                 contextCmdlet: this,
                 useLocalScope: false,
@@ -309,7 +309,7 @@ namespace Microsoft.PowerShell.Commands
                                 dollarUnder: InputObject,
                                 input: new object[] { InputObject },
                                 scriptThis: AutomationNull.Value,
-                                args: Utils.EmptyArray<object>());
+                                args: Array.Empty<object>());
                         }
                     }
 
@@ -434,7 +434,7 @@ namespace Microsoft.PowerShell.Commands
                                 {
                                     if (!BlockMethodInLanguageMode(InputObject))
                                     {
-                                        object result = targetMethod.Invoke(Utils.EmptyArray<object>());
+                                        object result = targetMethod.Invoke(Array.Empty<object>());
                                         WriteToPipelineWithUnrolling(result);
                                     }
                                 }
@@ -849,7 +849,7 @@ namespace Microsoft.PowerShell.Commands
             if (_endScript == null)
                 return;
 
-            var emptyArray = Utils.EmptyArray<object>();
+            var emptyArray = Array.Empty<object>();
             _endScript.InvokeUsingCmdlet(
                 contextCmdlet: this,
                 useLocalScope: false,
@@ -1634,7 +1634,7 @@ namespace Microsoft.PowerShell.Commands
                     dollarUnder: InputObject,
                     input: new object[] { _inputObject },
                     scriptThis: AutomationNull.Value,
-                    args: Utils.EmptyArray<object>());
+                    args: Array.Empty<object>());
 
                 if (_toBoolSite.Target.Invoke(_toBoolSite, result))
                 {

src/System.Management.Automation/engine/InvocationInfo.cs

@@ -128,7 +128,7 @@ namespace System.Management.Automation
             }
             else
             {
-                PipelineIterationInfo = Utils.EmptyArray<int>();
+                PipelineIterationInfo = Array.Empty<int>();
             }
 
             //
@@ -399,7 +399,7 @@ namespace System.Management.Automation
         /// <remarks>
         /// All the commands in a given pipeline share the same PipelinePositionInfo.
         /// </remarks>
-        internal int[] PipelineIterationInfo { get; set; } = Utils.EmptyArray<int>();
+        internal int[] PipelineIterationInfo { get; set; } = Array.Empty<int>();
 
         /// <summary>
         /// Adds the information about this informational record to a PSObject as note properties.

src/System.Management.Automation/engine/LanguagePrimitives.cs

@@ -1757,7 +1757,7 @@ namespace System.Management.Automation
         {
             if (valueToConvert != null)
             {
-                ConstructorInfo toConstructor = resultType.GetConstructor(PSTypeExtensions.EmptyTypes);
+                ConstructorInfo toConstructor = resultType.GetConstructor(Type.EmptyTypes);
                 ConvertViaNoArgumentConstructor noArgumentConstructorConverter = new ConvertViaNoArgumentConstructor(toConstructor, resultType);
                 return noArgumentConstructorConverter.Convert(PSObject.Base(valueToConvert), resultType, recursion, (PSObject)valueToConvert, formatProvider, null, ignoreUnknownMembers);
             }
@@ -5005,7 +5005,7 @@ namespace System.Management.Automation
             {
                 Type actualResultType = typeof(PSObject);
 
-                ConstructorInfo resultConstructor = actualResultType.GetConstructor(PSTypeExtensions.EmptyTypes);
+                ConstructorInfo resultConstructor = actualResultType.GetConstructor(Type.EmptyTypes);
 
                 var converterObj = new ConvertViaNoArgumentConstructor(resultConstructor, actualResultType);
                 return CacheConversion(fromType, toType, converterObj.Convert, ConversionRank.Language);
@@ -5441,7 +5441,7 @@ namespace System.Management.Automation
             ConstructorInfo toConstructor = null;
             try
             {
-                toConstructor = toType.GetConstructor(PSTypeExtensions.EmptyTypes);
+                toConstructor = toType.GetConstructor(Type.EmptyTypes);
             }
             catch (AmbiguousMatchException e)
             {
@@ -5663,7 +5663,7 @@ namespace System.Management.Automation
                                 // If the ToType has a constructor that takes a hashtable or OrderedDictionary,
                                 // then it would have been returned as the constructor during FigureConstructorConversion
                                 // So, we need to check only for the first condition
-                                ConstructorInfo resultConstructor = toType.GetConstructor(PSTypeExtensions.EmptyTypes);
+                                ConstructorInfo resultConstructor = toType.GetConstructor(Type.EmptyTypes);
 
                                 if (resultConstructor != null || (toType.IsValueType && !toType.IsPrimitive))
                                 {

src/System.Management.Automation/engine/Modules/ImportModuleCommand.cs

@@ -81,7 +81,7 @@ namespace Microsoft.PowerShell.Commands
         [Parameter(ParameterSetName = ParameterSet_ViaCimSession, Mandatory = true, ValueFromPipeline = true, Position = 0)]
         [ValidateTrustedData]
         [SuppressMessage("Microsoft.Performance", "CA1819:PropertiesShouldNotReturnArrays", Justification = "Cmdlets use arrays for parameters.")]
-        public string[] Name { set; get; } = Utils.EmptyArray<string>();
+        public string[] Name { set; get; } = Array.Empty<string>();
 
         /// <summary>
         /// This parameter specifies the current pipeline object.
@@ -125,7 +125,7 @@ namespace Microsoft.PowerShell.Commands
             get { return _functionImportList; }
         }
 
-        private string[] _functionImportList = Utils.EmptyArray<string>();
+        private string[] _functionImportList = Array.Empty<string>();
 
         /// <summary>
         /// This patterns matching the names of cmdlets to import from the module...
@@ -153,7 +153,7 @@ namespace Microsoft.PowerShell.Commands
             get { return _cmdletImportList; }
         }
 
-        private string[] _cmdletImportList = Utils.EmptyArray<string>();
+        private string[] _cmdletImportList = Array.Empty<string>();
 
         /// <summary>
         /// This parameter specifies the variables to import from the module...
@@ -316,7 +316,7 @@ namespace Microsoft.PowerShell.Commands
         [Parameter(ParameterSetName = ParameterSet_ModuleInfo, Mandatory = true, ValueFromPipeline = true, Position = 0)]
         [ValidateTrustedData]
         [SuppressMessage("Microsoft.Performance", "CA1819:PropertiesShouldNotReturnArrays", Justification = "Cmdlets use arrays for parameters.")]
-        public PSModuleInfo[] ModuleInfo { set; get; } = Utils.EmptyArray<PSModuleInfo>();
+        public PSModuleInfo[] ModuleInfo { set; get; } = Array.Empty<PSModuleInfo>();
 
         /// <summary>
         /// The arguments to pass to the module script.

src/System.Management.Automation/engine/Modules/ModuleCmdletBase.cs

@@ -1065,7 +1065,7 @@ namespace Microsoft.PowerShell.Commands
             }
 
             // Make sure we always return a non-null collection.
-            return allModules ?? Utils.EmptyArray<PSModuleInfo>();
+            return allModules ?? Array.Empty<PSModuleInfo>();
         }
 
         /// <summary>
@@ -5732,7 +5732,7 @@ namespace Microsoft.PowerShell.Commands
                                     scriptThis: AutomationNull.Value,
                                     outputPipe: ((MshCommandRuntime)this.CommandRuntime).OutputPipe,
                                     invocationInfo: invocationInfo,
-                                    args: this.BaseArgumentList ?? Utils.EmptyArray<object>());
+                                    args: this.BaseArgumentList ?? Array.Empty<object>());
                             }
                             finally
                             {

src/System.Management.Automation/engine/Modules/ModuleIntrinsics.cs

@@ -228,7 +228,7 @@ namespace System.Management.Automation
                         scriptThis: AutomationNull.Value,
                         outputPipe: outputPipe,
                         invocationInfo: invocationInfo,
-                        args: arguments ?? Utils.EmptyArray<object>());
+                        args: arguments ?? Array.Empty<object>());
                 }
                 catch (ExitException ee)
                 {
@@ -879,7 +879,7 @@ namespace System.Management.Automation
             }
             catch (PSInvalidOperationException) { }
 
-            return Utils.EmptyArray<ExperimentalFeature>();
+            return Array.Empty<ExperimentalFeature>();
         }
 
         // The extensions of all of the files that can be processed with Import-Module, put the ni.dll in front of .dll to have higher priority to be loaded.

src/System.Management.Automation/engine/Modules/ModuleUtils.cs

@@ -266,8 +266,8 @@ namespace System.Management.Automation.Internal
                     subdirectories = Directory.GetDirectories(directoryToCheck, "*", options);
                     ProcessPossibleVersionSubdirectories(subdirectories, versionDirectories);
                 }
-                catch (IOException) { subdirectories = Utils.EmptyArray<string>(); }
-                catch (UnauthorizedAccessException) { subdirectories = Utils.EmptyArray<string>(); }
+                catch (IOException) { subdirectories = Array.Empty<string>(); }
+                catch (UnauthorizedAccessException) { subdirectories = Array.Empty<string>(); }
 
                 bool isModuleDirectory = false;
                 string proposedModuleName = Path.GetFileName(directoryToCheck);

src/System.Management.Automation/engine/Modules/NewModuleCommand.cs

@@ -78,7 +78,7 @@ namespace Microsoft.PowerShell.Commands
             get { return _functionImportList; }
         }
 
-        private string[] _functionImportList = Utils.EmptyArray<string>();
+        private string[] _functionImportList = Array.Empty<string>();
 
         /// <summary>
         /// This parameter specifies the patterns matching the cmdlets to import from the module...
@@ -106,7 +106,7 @@ namespace Microsoft.PowerShell.Commands
             get { return _cmdletImportList; }
         }
 
-        private string[] _cmdletImportList = Utils.EmptyArray<string>();
+        private string[] _cmdletImportList = Array.Empty<string>();
 
         /// <summary>
         /// This parameter causes the session state instance to be written...

src/System.Management.Automation/engine/Modules/RemoteDiscoveryHelper.cs

@@ -660,7 +660,7 @@ namespace System.Management.Automation
             {
                 get
                 {
-                    byte[] rawFileData = GetPropertyValue<byte[]>(_baseObject, "moduleManifestFileData", Utils.EmptyArray<byte>());
+                    byte[] rawFileData = GetPropertyValue<byte[]>(_baseObject, "moduleManifestFileData", Array.Empty<byte>());
                     return new CimModuleManifestFile(this.ModuleName + ".psd1", rawFileData);
                 }
             }
@@ -728,7 +728,7 @@ namespace System.Management.Automation
 
                 internal override byte[] RawFileDataCore
                 {
-                    get { return GetPropertyValue<byte[]>(_baseObject, "FileData", Utils.EmptyArray<byte>()); }
+                    get { return GetPropertyValue<byte[]>(_baseObject, "FileData", Array.Empty<byte>()); }
                 }
             }
         }
@@ -851,9 +851,9 @@ namespace System.Management.Automation
             IEnumerable<string> typesToProcess,
             IEnumerable<string> formatsToProcess)
         {
-            nestedModules = nestedModules ?? Utils.EmptyArray<string>();
-            typesToProcess = typesToProcess ?? Utils.EmptyArray<string>();
-            formatsToProcess = formatsToProcess ?? Utils.EmptyArray<string>();
+            nestedModules = nestedModules ?? Array.Empty<string>();
+            typesToProcess = typesToProcess ?? Array.Empty<string>();
+            formatsToProcess = formatsToProcess ?? Array.Empty<string>();
 
             var newManifest = new Hashtable(StringComparer.OrdinalIgnoreCase);
             newManifest["NestedModules"] = nestedModules;

src/System.Management.Automation/engine/Modules/RemoveModuleCommand.cs

@@ -36,7 +36,7 @@ namespace Microsoft.PowerShell.Commands
             get { return _name; }
         }
 
-        private string[] _name = Utils.EmptyArray<string>();
+        private string[] _name = Array.Empty<string>();
 
         /// <summary>
         /// This parameter specifies the current pipeline object.
@@ -57,7 +57,7 @@ namespace Microsoft.PowerShell.Commands
             get { return _moduleInfo; }
         }
 
-        private PSModuleInfo[] _moduleInfo = Utils.EmptyArray<PSModuleInfo>();
+        private PSModuleInfo[] _moduleInfo = Array.Empty<PSModuleInfo>();
 
         /// <summary>
         /// If provided, this parameter will allow readonly modules to be removed.

src/System.Management.Automation/engine/MshCommandRuntime.cs

@@ -2199,7 +2199,7 @@ namespace System.Management.Automation
         /// An empty array that is declared statically so we don't keep
         /// allocating them over and over...
         /// </summary>
-        internal static object[] StaticEmptyArray = Utils.EmptyArray<object>();
+        internal static object[] StaticEmptyArray = Array.Empty<object>();
 
         /// <summary>
         /// Gets or sets the error pipe.

src/System.Management.Automation/engine/MshMemberInfo.cs

@@ -1856,7 +1856,7 @@ namespace System.Management.Automation
                     dollarUnder: AutomationNull.Value,
                     input: AutomationNull.Value,
                     scriptThis: scriptThis,
-                    args: Utils.EmptyArray<object>());
+                    args: Array.Empty<object>());
             }
             catch (RuntimeException e)
             {

src/System.Management.Automation/engine/MshObjectTypeDescriptor.cs

@@ -95,7 +95,7 @@ namespace System.Management.Automation
         internal event EventHandler<GettingValueExceptionEventArgs> GettingValueException;
 
         internal PSObjectPropertyDescriptor(string propertyName, Type propertyType, bool isReadOnly, AttributeCollection propertyAttributes)
-            : base(propertyName, Utils.EmptyArray<Attribute>())
+            : base(propertyName, Array.Empty<Attribute>())
         {
             IsReadOnly = isReadOnly;
             Attributes = propertyAttributes;

src/System.Management.Automation/engine/TypeTable.cs

@@ -1488,7 +1488,7 @@ namespace System.Management.Automation.Runspaces
             UpdateKey();
         }
 
-        internal static readonly ConsolidatedString Empty = new ConsolidatedString(Utils.EmptyArray<string>());
+        internal static readonly ConsolidatedString Empty = new ConsolidatedString(Array.Empty<string>());
 
         internal static IEqualityComparer<ConsolidatedString> EqualityComparer = new ConsolidatedStringEqualityComparer();
 

src/System.Management.Automation/engine/Utils.cs

@@ -1212,26 +1212,15 @@ namespace System.Management.Automation
             return commandName;
         }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        internal static T[] EmptyArray<T>()
-        {
-            return EmptyArrayHolder<T>._instance;
-        }
-
         internal static ReadOnlyCollection<T> EmptyReadOnlyCollection<T>()
         {
             return EmptyReadOnlyCollectionHolder<T>._instance;
         }
 
-        private static class EmptyArrayHolder<T>
-        {
-            internal static readonly T[] _instance = new T[0];
-        }
-
         private static class EmptyReadOnlyCollectionHolder<T>
         {
             internal static readonly ReadOnlyCollection<T> _instance =
-                new ReadOnlyCollection<T>(EmptyArray<T>());
+                new ReadOnlyCollection<T>(Array.Empty<T>());
         }
 
         internal static class Separators

src/System.Management.Automation/engine/debugger/Breakpoint.cs

@@ -94,7 +94,7 @@ namespace System.Management.Automation
                 // implement a "trigger once" breakpoint that disables itself after first hit.
                 // One could also share an action across many breakpoints - and hence needs
                 // to know something about the breakpoint that is hit, e.g. in a poor mans code coverage tool.
-                Action.DoInvoke(dollarUnder: this, input: null, args: Utils.EmptyArray<object>());
+                Action.DoInvoke(dollarUnder: this, input: null, args: Array.Empty<object>());
             }
             catch (BreakException)
             {

src/System.Management.Automation/engine/hostifaces/History.cs

@@ -297,7 +297,7 @@ namespace Microsoft.PowerShell.Commands
 
             if (count == 0 || _countEntriesInBuffer == 0)
             {
-                return Utils.EmptyArray<HistoryInfo>();
+                return Array.Empty<HistoryInfo>();
             }
 
             lock (_syncRoot)
@@ -1119,7 +1119,7 @@ namespace Microsoft.PowerShell.Commands
                 try
                 {
                     // Indicate to the system that we are in nested prompt mode, since we are emulating running the command at the prompt.
-                    // This ensures that the command being run as nested runs in the correct language mode, because CreatePipelineProcessor() 
+                    // This ensures that the command being run as nested runs in the correct language mode, because CreatePipelineProcessor()
                     // always forces CommandOrigin to Internal for nested running commands, and Command.CreateCommandProcessor() forces Internal
                     // commands to always run in FullLanguage mode unless in a nested prompt.
                     if (localRunspace != null)

src/System.Management.Automation/engine/interpreter/InstructionList.cs

@@ -130,7 +130,7 @@ namespace System.Management.Automation.Interpreter
                 int stackDepth = 0;
                 int continuationsDepth = 0;
 
-                var cookieEnumerator = (debugCookies ?? Automation.Utils.EmptyArray<KeyValuePair<int, object>>()).GetEnumerator();
+                var cookieEnumerator = (debugCookies ?? Array.Empty<KeyValuePair<int, object>>()).GetEnumerator();
                 var hasCookie = cookieEnumerator.MoveNext();
 
                 for (int i = 0; i < instructions.Count; i++)

src/System.Management.Automation/engine/interpreter/LightCompiler.cs

@@ -288,7 +288,7 @@ namespace System.Management.Automation.Interpreter
 
         private readonly LightCompiler _parent;
 
-        private static LocalDefinition[] s_emptyLocals = Automation.Utils.EmptyArray<LocalDefinition>();
+        private static LocalDefinition[] s_emptyLocals = Array.Empty<LocalDefinition>();
 
         public LightCompiler(int compilationThreshold)
         {

src/System.Management.Automation/engine/interpreter/Utilities.cs

@@ -682,7 +682,7 @@ namespace System.Management.Automation.Interpreter
     internal class ThreadLocal<T>
     {
         private StorageInfo[] _stores;                                         // array of storage indexed by managed thread ID
-        private static readonly StorageInfo[] s_updating = Automation.Utils.EmptyArray<StorageInfo>();   // a marker used when updating the array
+        private static readonly StorageInfo[] s_updating = Array.Empty<StorageInfo>();   // a marker used when updating the array
         private readonly bool _refCounted;
 
         public ThreadLocal()

src/System.Management.Automation/engine/lang/parserutils.cs

@@ -990,7 +990,7 @@ namespace System.Management.Automation
                             dollarUnder: match,
                             input: AutomationNull.Value,
                             scriptThis: AutomationNull.Value,
-                            args: Utils.EmptyArray<object>());
+                            args: Array.Empty<object>());
 
                         return PSObject.ToStringParser(context, result);;
                     };

src/System.Management.Automation/engine/parser/Compiler.cs

@@ -33,9 +33,9 @@ namespace System.Management.Automation.Language
         internal const BindingFlags instancePublicFlags = BindingFlags.Instance | BindingFlags.Public;
 
         internal static readonly ConstructorInfo ObjectList_ctor =
-            typeof(List<object>).GetConstructor(PSTypeExtensions.EmptyTypes);
+            typeof(List<object>).GetConstructor(Type.EmptyTypes);
         internal static readonly MethodInfo ObjectList_ToArray =
-            typeof(List<object>).GetMethod(nameof(List<object>.ToArray), PSTypeExtensions.EmptyTypes);
+            typeof(List<object>).GetMethod(nameof(List<object>.ToArray), Type.EmptyTypes);
 
         internal static readonly MethodInfo ArrayOps_GetMDArrayValue =
             typeof(ArrayOps).GetMethod(nameof(ArrayOps.GetMDArrayValue), staticFlags);
@@ -778,7 +778,7 @@ namespace System.Management.Automation.Language
 
         private IEnumerable<Expression> CompileInvocationArguments(IEnumerable<ExpressionAst> arguments)
         {
-            return arguments == null ? Utils.EmptyArray<Expression>() : arguments.Select(CompileExpressionOperand);
+            return arguments == null ? Array.Empty<Expression>() : arguments.Select(CompileExpressionOperand);
         }
 
         internal Expression ReduceAssignment(ISupportsAssignment left, TokenKind tokenKind, Expression right)
@@ -1266,7 +1266,7 @@ namespace System.Management.Automation.Language
             OutputTypeAttribute result;
             if (ast.PositionalArguments.Count == 0)
             {
-                result = new OutputTypeAttribute(Utils.EmptyArray<string>());
+                result = new OutputTypeAttribute(Array.Empty<string>());
             }
             else if (ast.PositionalArguments.Count == 1)
             {
@@ -3726,7 +3726,7 @@ namespace System.Management.Automation.Language
 
         internal static Expression CreateThrow(Type resultType, Type exception, params object[] exceptionArgs)
         {
-            Type[] argTypes = PSTypeExtensions.EmptyTypes;
+            Type[] argTypes = Type.EmptyTypes;
             if (exceptionArgs != null)
             {
                 argTypes = new Type[exceptionArgs.Length];
@@ -5914,7 +5914,7 @@ namespace System.Management.Automation.Language
             }
 
             return InvokeMemberExpressionAst.Arguments == null
-               ? Utils.EmptyArray<Expression>()
+               ? Array.Empty<Expression>()
                : (InvokeMemberExpressionAst.Arguments.Select(compiler.Compile)).ToArray();
         }
 

src/System.Management.Automation/engine/parser/PSType.cs

@@ -19,7 +19,7 @@ namespace System.Management.Automation.Language
 
         private static int s_globalCounter = 0;
         private static readonly CustomAttributeBuilder s_hiddenCustomAttributeBuilder =
-            new CustomAttributeBuilder(typeof(HiddenAttribute).GetConstructor(Type.EmptyTypes), Utils.EmptyArray<object>());
+            new CustomAttributeBuilder(typeof(HiddenAttribute).GetConstructor(Type.EmptyTypes), Array.Empty<object>());
 
         private static readonly string s_sessionStateKeeperFieldName = "__sessionStateKeeper";
         internal static readonly string SessionStateFieldName = "__sessionState";
@@ -765,7 +765,7 @@ namespace System.Management.Automation.Language
                 var parameters = ((IParameterMetadataProvider)functionMemberAst).Parameters;
                 if (parameters == null)
                 {
-                    return PSTypeExtensions.EmptyTypes;
+                    return Type.EmptyTypes;
                 }
 
                 bool anyErrors = false;
@@ -1279,7 +1279,7 @@ namespace System.Management.Automation.Language
         private static IEnumerable<CustomAttributeBuilder> GetAssemblyAttributeBuilders(string scriptFile)
         {
             var ctor = typeof(DynamicClassImplementationAssemblyAttribute).GetConstructor(Type.EmptyTypes);
-            var emptyArgs = Utils.EmptyArray<object>();
+            var emptyArgs = Array.Empty<object>();
 
             if (string.IsNullOrEmpty(scriptFile)) {
                 yield return new CustomAttributeBuilder(ctor, emptyArgs);
@@ -1291,7 +1291,7 @@ namespace System.Management.Automation.Language
             var propertyArgs = new object[] { scriptFile };
 
             yield return new CustomAttributeBuilder(ctor, emptyArgs,
-                propertyInfo, propertyArgs, Utils.EmptyArray<FieldInfo>(), emptyArgs);
+                propertyInfo, propertyArgs, Array.Empty<FieldInfo>(), emptyArgs);
 
         }
 

src/System.Management.Automation/engine/parser/Parser.cs

@@ -88,7 +88,7 @@ namespace System.Management.Automation.Language
                 var emptyExtent = new EmptyScriptExtent();
                 var errorMsg = string.Format(CultureInfo.CurrentCulture, ParserStrings.FileReadError, e.Message);
                 errors = new[] { new ParseError(emptyExtent, "FileReadError", errorMsg) };
-                tokens = Utils.EmptyArray<Token>();
+                tokens = Array.Empty<Token>();
                 return new ScriptBlockAst(emptyExtent, null, new StatementBlockAst(emptyExtent, null, null), false);
             }
 
@@ -1792,7 +1792,7 @@ namespace System.Management.Automation.Language
                         nameof(ParserStrings.MissingNamedStatementBlock),
                         ParserStrings.MissingNamedStatementBlock,
                         blockNameToken.Kind.Text());
-                    statementBlock = new StatementBlockAst(blockNameToken.Extent, Utils.EmptyArray<StatementAst>(), null);
+                    statementBlock = new StatementBlockAst(blockNameToken.Extent, Array.Empty<StatementAst>(), null);
                 }
                 else
                 {

src/System.Management.Automation/engine/parser/TypeInferenceVisitor.cs

@@ -124,7 +124,7 @@ namespace System.Management.Automation
 
     internal class TypeInferenceContext
     {
-        public static readonly PSTypeName[] EmptyPSTypeNameArray = Utils.EmptyArray<PSTypeName>();
+        public static readonly PSTypeName[] EmptyPSTypeNameArray = Array.Empty<PSTypeName>();
         private readonly PowerShell _powerShell;
 
         public TypeInferenceContext()
@@ -1496,13 +1496,13 @@ namespace System.Management.Automation
             var memberAsStringConst = memberCommandElement as StringConstantExpressionAst;
             if (memberAsStringConst == null)
             {
-                return Utils.EmptyArray<PSTypeName>();
+                return Array.Empty<PSTypeName>();
             }
 
             var exprType = GetExpressionType(expression, isStatic);
             if (exprType == null || exprType.Length == 0)
             {
-                return Utils.EmptyArray<PSTypeName>();
+                return Array.Empty<PSTypeName>();
             }
 
             var res = new List<PSTypeName>(10);

src/System.Management.Automation/engine/parser/TypeResolver.cs

@@ -518,7 +518,7 @@ namespace System.Management.Automation.Language
     internal class TypeResolutionState
     {
         internal static readonly string[] systemNamespace = { "System" };
-        internal static readonly Assembly[] emptyAssemblies = Utils.EmptyArray<Assembly>();
+        internal static readonly Assembly[] emptyAssemblies = Array.Empty<Assembly>();
         internal static readonly TypeResolutionState UsingSystem = new TypeResolutionState();
 
         internal readonly string[] namespaces;

src/System.Management.Automation/engine/parser/ast.cs

@@ -286,7 +286,7 @@ namespace System.Management.Automation.Language
         internal abstract object Accept(ICustomAstVisitor visitor);
         internal abstract AstVisitAction InternalVisit(AstVisitor visitor);
 
-        internal static PSTypeName[] EmptyPSTypeNameArray = Utils.EmptyArray<PSTypeName>();
+        internal static PSTypeName[] EmptyPSTypeNameArray = Array.Empty<PSTypeName>();
 
         internal bool IsInWorkflow()
         {
@@ -3458,7 +3458,7 @@ namespace System.Management.Automation.Language
             StatementAst statement = null;
             if (type == SpecialMemberFunctionType.DefaultConstructor)
             {
-                var invokeMemberAst = new BaseCtorInvokeMemberExpressionAst(extent, extent, Utils.EmptyArray<ExpressionAst>());
+                var invokeMemberAst = new BaseCtorInvokeMemberExpressionAst(extent, extent, Array.Empty<ExpressionAst>());
                 statement = new CommandExpressionAst(extent, invokeMemberAst, null);
             }
 
@@ -3975,7 +3975,7 @@ namespace System.Management.Automation.Language
     /// </summary>
     public class DataStatementAst : StatementAst
     {
-        private static readonly ExpressionAst[] s_emptyCommandsAllowed = Utils.EmptyArray<ExpressionAst>();
+        private static readonly ExpressionAst[] s_emptyCommandsAllowed = Array.Empty<ExpressionAst>();
 
         /// <summary>
         /// Construct a data statement.
@@ -4604,7 +4604,7 @@ namespace System.Management.Automation.Language
     /// </summary>
     public class SwitchStatementAst : LabeledStatementAst
     {
-        private static readonly SwitchClause[] s_emptyClauseArray = Utils.EmptyArray<SwitchClause>();
+        private static readonly SwitchClause[] s_emptyClauseArray = Array.Empty<SwitchClause>();
 
         /// <summary>
         /// Construct a switch statement.

src/System.Management.Automation/engine/regex.cs

@@ -235,7 +235,7 @@ namespace System.Management.Automation
         /// </returns>
         public static string Escape(string pattern)
         {
-            return Escape(pattern, Utils.EmptyArray<char>());
+            return Escape(pattern, Array.Empty<char>());
         }
 
         /// <summary>

src/System.Management.Automation/engine/remoting/client/JobManager.cs

@@ -87,7 +87,7 @@ namespace System.Management.Automation
             }
             else
             {
-                ConstructorInfo constructor = jobSourceAdapterType.GetConstructor(PSTypeExtensions.EmptyTypes);
+                ConstructorInfo constructor = jobSourceAdapterType.GetConstructor(Type.EmptyTypes);
                 if (!constructor.IsPublic)
                 {
                     string message = string.Format(CultureInfo.CurrentCulture,

src/System.Management.Automation/engine/remoting/commands/CustomShellCommands.cs

@@ -599,7 +599,7 @@ else
                     useLocalScope: true,
                     errorHandlingBehavior: ScriptBlock.ErrorHandlingBehavior.WriteToCurrentErrorPipe,
                     dollarUnder: AutomationNull.Value,
-                    input: Utils.EmptyArray<object>(),
+                    input: Array.Empty<object>(),
                     scriptThis: AutomationNull.Value,
                     args: new object[] {
                                             file,
@@ -1216,7 +1216,7 @@ else
 
             if (sessionType == PSSessionType.Workflow)
             {
-                List<object> modifiedModulePath = new List<object>(modulesToImport ?? Utils.EmptyArray<string>());
+                List<object> modifiedModulePath = new List<object>(modulesToImport ?? Array.Empty<string>());
                 modifiedModulePath.Insert(0, ConfigurationDataFromXML.PSWORKFLOWMODULE);
                 modulesToImport = modifiedModulePath.ToArray();
             }
@@ -1339,7 +1339,7 @@ else
                     cmdlet.WriteVerbose(StringUtil.Format(RemotingErrorIdStrings.RestartWSManServiceMessageV));
 
                     ScriptBlock restartServiceScript = cmdlet.InvokeCommand.NewScriptBlock(restartWSManFormat);
-                    var emptyArray = Utils.EmptyArray<object>();
+                    var emptyArray = Array.Empty<object>();
                     restartServiceScript.InvokeUsingCmdlet(
                         contextCmdlet: cmdlet,
                         useLocalScope: true,
@@ -2697,7 +2697,7 @@ else
                 useLocalScope: true,
                 errorHandlingBehavior: ScriptBlock.ErrorHandlingBehavior.WriteToCurrentErrorPipe,
                 dollarUnder: AutomationNull.Value,
-                input: Utils.EmptyArray<object>(),
+                input: Array.Empty<object>(),
                 scriptThis: AutomationNull.Value,
                 args: new object[] {
                                            Name,
@@ -2959,7 +2959,7 @@ $args[0] | ForEach-Object {{
                     useLocalScope: true,
                     errorHandlingBehavior: ScriptBlock.ErrorHandlingBehavior.WriteToCurrentErrorPipe,
                     dollarUnder: AutomationNull.Value,
-                    input: Utils.EmptyArray<object>(),
+                    input: Array.Empty<object>(),
                     scriptThis: AutomationNull.Value,
                     args: new object[] {
                                                    arguments,
@@ -3533,7 +3533,7 @@ Set-PSSessionConfiguration $args[0] $args[1] $args[2] $args[3] $args[4] $args[5]
                 useLocalScope: true,
                 errorHandlingBehavior: ScriptBlock.ErrorHandlingBehavior.WriteToCurrentErrorPipe,
                 dollarUnder: AutomationNull.Value,
-                input: Utils.EmptyArray<object>(),
+                input: Array.Empty<object>(),
                 scriptThis: AutomationNull.Value,
                 args: new object[] {
                                                propertiesToUpdate,
@@ -3629,7 +3629,7 @@ Set-PSSessionConfiguration $args[0] $args[1] $args[2] $args[3] $args[4] $args[5]
                   useLocalScope: true,
                   errorHandlingBehavior: ScriptBlock.ErrorHandlingBehavior.WriteToCurrentErrorPipe,
                   dollarUnder: AutomationNull.Value,
-                  input: Utils.EmptyArray<object>(),
+                  input: Array.Empty<object>(),
                   scriptThis: AutomationNull.Value,
                   args: new object[] {
                             runAsCredential.UserName,
@@ -3700,7 +3700,7 @@ Set-PSSessionConfiguration $args[0] $args[1] $args[2] $args[3] $args[4] $args[5]
                         useLocalScope: true,
                         errorHandlingBehavior: ScriptBlock.ErrorHandlingBehavior.WriteToCurrentErrorPipe,
                         dollarUnder: AutomationNull.Value,
-                        input: Utils.EmptyArray<object>(),
+                        input: Array.Empty<object>(),
                         scriptThis: AutomationNull.Value,
                         args: new object[] { maxIdleTimeOut, idleTimeOut, setMaxIdleTimeoutFirst });
 
@@ -3715,7 +3715,7 @@ Set-PSSessionConfiguration $args[0] $args[1] $args[2] $args[3] $args[4] $args[5]
                     useLocalScope: true,
                     errorHandlingBehavior: ScriptBlock.ErrorHandlingBehavior.WriteToCurrentErrorPipe,
                     dollarUnder: AutomationNull.Value,
-                    input: Utils.EmptyArray<object>(),
+                    input: Array.Empty<object>(),
                     scriptThis: AutomationNull.Value,
                     args: new object[] { quotas, });
             }
@@ -3756,7 +3756,7 @@ Set-PSSessionConfiguration $args[0] $args[1] $args[2] $args[3] $args[4] $args[5]
                 useLocalScope: true,
                 errorHandlingBehavior: ScriptBlock.ErrorHandlingBehavior.WriteToCurrentErrorPipe,
                 dollarUnder: AutomationNull.Value,
-                input: Utils.EmptyArray<object>(),
+                input: Array.Empty<object>(),
                 scriptThis: AutomationNull.Value,
                 args: new object[] {
                             optionsTable,
@@ -3862,7 +3862,7 @@ Set-PSSessionConfiguration $args[0] $args[1] $args[2] $args[3] $args[4] $args[5]
                             useLocalScope: true,
                             errorHandlingBehavior: ScriptBlock.ErrorHandlingBehavior.WriteToCurrentErrorPipe,
                             dollarUnder: AutomationNull.Value,
-                            input: Utils.EmptyArray<object>(),
+                            input: Array.Empty<object>(),
                             scriptThis: AutomationNull.Value,
                             args: new object[] {
                                                 encodedSessionConfigData,
@@ -4525,7 +4525,7 @@ $_ | Enable-PSSessionConfiguration -force $args[0] -sddl $args[1] -isSDDLSpecifi
                 useLocalScope: true,
                 errorHandlingBehavior: ScriptBlock.ErrorHandlingBehavior.WriteToCurrentErrorPipe,
                 dollarUnder: _shellsToEnable,
-                input: Utils.EmptyArray<object>(),
+                input: Array.Empty<object>(),
                 scriptThis: AutomationNull.Value,
                 args: new object[] {
                                                _force,
@@ -4546,7 +4546,7 @@ $_ | Enable-PSSessionConfiguration -force $args[0] -sddl $args[1] -isSDDLSpecifi
             System.Management.Automation.Tracing.Tracer tracer = new System.Management.Automation.Tracing.Tracer();
 
             StringBuilder sb = new StringBuilder();
-            foreach (string endPointName in Name ?? Utils.EmptyArray<string>())
+            foreach (string endPointName in Name ?? Array.Empty<string>())
             {
                 sb.Append(endPointName);
                 sb.Append(", ");
@@ -4760,7 +4760,7 @@ $_ | Disable-PSSessionConfiguration -force $args[0] -whatif:$args[1] -confirm:$a
                 useLocalScope: true,
                 errorHandlingBehavior: ScriptBlock.ErrorHandlingBehavior.WriteToCurrentErrorPipe,
                 dollarUnder: _shellsToDisable,
-                input: Utils.EmptyArray<object>(),
+                input: Array.Empty<object>(),
                 scriptThis: AutomationNull.Value,
                 args: new object[] {
                                                _force,
@@ -4774,7 +4774,7 @@ $_ | Disable-PSSessionConfiguration -force $args[0] -whatif:$args[1] -confirm:$a
             System.Management.Automation.Tracing.Tracer tracer = new System.Management.Automation.Tracing.Tracer();
 
             StringBuilder sb = new StringBuilder();
-            foreach (string endPointName in Name ?? Utils.EmptyArray<string>())
+            foreach (string endPointName in Name ?? Array.Empty<string>())
             {
                 sb.Append(endPointName);
                 sb.Append(", ");
@@ -5240,7 +5240,7 @@ Enable-PSRemoting -force $args[0] -queryForRegisterDefault $args[1] -captionForR
                 useLocalScope: true,
                 errorHandlingBehavior: ScriptBlock.ErrorHandlingBehavior.WriteToCurrentErrorPipe,
                 dollarUnder: AutomationNull.Value,
-                input: Utils.EmptyArray<object>(),
+                input: Array.Empty<object>(),
                 scriptThis: AutomationNull.Value,
                 args: new object[] {
                                                _force,
@@ -5444,7 +5444,7 @@ Disable-PSRemoting -force:$args[0] -queryForSet $args[1] -captionForSet $args[2]
                 useLocalScope: true,
                 errorHandlingBehavior: ScriptBlock.ErrorHandlingBehavior.WriteToCurrentErrorPipe,
                 dollarUnder: AutomationNull.Value,
-                input: Utils.EmptyArray<object>(),
+                input: Array.Empty<object>(),
                 scriptThis: AutomationNull.Value,
                 args: new object[] {
                                                _force,

src/System.Management.Automation/engine/remoting/commands/NewPSSessionConfigurationFile.cs

@@ -269,7 +269,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] _scriptsToProcess = Utils.EmptyArray<string>();
+        private string[] _scriptsToProcess = Array.Empty<string>();
 
         /// <summary>
         /// Role definitions for this session configuration (Role name -> Role capability)
@@ -402,7 +402,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] _visibleAliases = Utils.EmptyArray<string>();
+        private string[] _visibleAliases = Array.Empty<string>();
 
         /// <summary>
         /// A list of visible cmdlets.
@@ -462,7 +462,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] _visibleExternalCommands = Utils.EmptyArray<string>();
+        private string[] _visibleExternalCommands = Array.Empty<string>();
 
         /// <summary>
         /// A list of providers.
@@ -482,7 +482,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] _visibleProviders = Utils.EmptyArray<string>();
+        private string[] _visibleProviders = Array.Empty<string>();
 
         /// <summary>
         /// A list of aliases.
@@ -583,7 +583,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] _typesToProcess = Utils.EmptyArray<string>();
+        private string[] _typesToProcess = Array.Empty<string>();
 
         /// <summary>
         /// A list of format data to process.
@@ -603,7 +603,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] _formatsToProcess = Utils.EmptyArray<string>();
+        private string[] _formatsToProcess = Array.Empty<string>();
 
         /// <summary>
         /// A list of assemblies to load.
@@ -1291,7 +1291,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] _visibleAliases = Utils.EmptyArray<string>();
+        private string[] _visibleAliases = Array.Empty<string>();
 
         /// <summary>
         /// A list of visible cmdlets.
@@ -1351,7 +1351,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] _visibleExternalCommands = Utils.EmptyArray<string>();
+        private string[] _visibleExternalCommands = Array.Empty<string>();
 
         /// <summary>
         /// A list of providers.
@@ -1371,7 +1371,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] _visibleProviders = Utils.EmptyArray<string>();
+        private string[] _visibleProviders = Array.Empty<string>();
 
         /// <summary>
         /// Scripts to process.
@@ -1391,7 +1391,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] _scriptsToProcess = Utils.EmptyArray<string>();
+        private string[] _scriptsToProcess = Array.Empty<string>();
 
         /// <summary>
         /// A list of aliases.
@@ -1492,7 +1492,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] _typesToProcess = Utils.EmptyArray<string>();
+        private string[] _typesToProcess = Array.Empty<string>();
 
         /// <summary>
         /// A list of format data to process.
@@ -1512,7 +1512,7 @@ namespace Microsoft.PowerShell.Commands
             }
         }
 
-        private string[] _formatsToProcess = Utils.EmptyArray<string>();
+        private string[] _formatsToProcess = Array.Empty<string>();
 
         /// <summary>
         /// A list of assemblies to load.

src/System.Management.Automation/engine/remoting/commands/PSRemotingCmdlet.cs

@@ -70,7 +70,7 @@ namespace Microsoft.PowerShell.Commands
             }
             else if (computerNames.Length == 0)
             {
-                resolvedComputerNames = Utils.EmptyArray<string>();
+                resolvedComputerNames = Array.Empty<string>();
             }
             else
             {

src/System.Management.Automation/engine/remoting/common/WireDataFormat/RemoteSessionCapability.cs

@@ -130,7 +130,7 @@ namespace System.Management.Automation.Remoting
                 // ignore it and dont try to serialize again.
                 if (e != null)
                 {
-                    _timeZoneInByteFormat = Utils.EmptyArray<byte>();
+                    _timeZoneInByteFormat = Array.Empty<byte>();
                 }
             }
 

src/System.Management.Automation/engine/remoting/fanin/WSManNativeAPI.cs

@@ -804,7 +804,7 @@ namespace System.Management.Automation.Remoting.Client
                     if (this.Type == (uint)WSManDataType.WSMAN_DATA_TYPE_BINARY)
                         return _data;
                     else
-                        return Utils.EmptyArray<byte>();
+                        return Array.Empty<byte>();
                 }
             }
 

src/System.Management.Automation/engine/remoting/server/ServerMethodExecutor.cs

@@ -80,7 +80,7 @@ namespace System.Management.Automation.Remoting
         /// </summary>
         internal void ExecuteVoidMethod(RemoteHostMethodId methodId)
         {
-            ExecuteVoidMethod(methodId, Utils.EmptyArray<object>());
+            ExecuteVoidMethod(methodId, Array.Empty<object>());
         }
 
         /// <summary>
@@ -111,7 +111,7 @@ namespace System.Management.Automation.Remoting
         /// </summary>
         internal T ExecuteMethod<T>(RemoteHostMethodId methodId)
         {
-            return ExecuteMethod<T>(methodId, Utils.EmptyArray<object>());
+            return ExecuteMethod<T>(methodId, Array.Empty<object>());
         }
 
         /// <summary>

src/System.Management.Automation/engine/runtime/Binding/Binders.cs

@@ -585,7 +585,7 @@ namespace System.Management.Automation.Language
             if (target.Value == AutomationNull.Value)
             {
                 return new DynamicMetaObject(
-                    Expression.Call(Expression.Constant(Utils.EmptyArray<object>()), typeof(Array).GetMethod("GetEnumerator")),
+                    Expression.Call(Expression.Constant(Array.Empty<object>()), typeof(Array).GetMethod("GetEnumerator")),
                     BindingRestrictions.GetInstanceRestriction(target.Expression, AutomationNull.Value)).WriteToDebugLog(this);
             }
 
@@ -726,7 +726,7 @@ namespace System.Management.Automation.Language
         private static IEnumerator AutomationNullRule(CallSite site, object obj)
         {
             return obj == AutomationNull.Value
-                ? Utils.EmptyArray<object>().GetEnumerator()
+                ? Array.Empty<object>().GetEnumerator()
                 : ((CallSite<Func<CallSite, object, IEnumerator>>)site).Update(site, obj);
         }
 
@@ -805,7 +805,7 @@ namespace System.Management.Automation.Language
 
             if (target.Value == AutomationNull.Value)
             {
-                return new DynamicMetaObject(Expression.Constant(Utils.EmptyArray<object>()),
+                return new DynamicMetaObject(Expression.Constant(Array.Empty<object>()),
                     BindingRestrictions.GetInstanceRestriction(target.Expression, AutomationNull.Value)).WriteToDebugLog(this);
             }
 
@@ -874,7 +874,7 @@ namespace System.Management.Automation.Language
             var enumerable = PSEnumerableBinder.IsEnumerable(target);
             if (enumerable == null)
             {
-                var bindingResult = PSVariableAssignmentBinder.Get().Bind(target, Utils.EmptyArray<DynamicMetaObject>());
+                var bindingResult = PSVariableAssignmentBinder.Get().Bind(target, Array.Empty<DynamicMetaObject>());
                 var restrictions = target.LimitType.IsValueType
                     ? bindingResult.Restrictions
                     : target.PSGetTypeRestriction();
@@ -3706,7 +3706,7 @@ namespace System.Management.Automation.Language
             }
 
             return errorSuggestion ?? target.ThrowRuntimeError(
-                Utils.EmptyArray<DynamicMetaObject>(),
+                Array.Empty<DynamicMetaObject>(),
                 BindingRestrictions.Empty,
                 "OperatorRequiresNumber",
                 ParserStrings.OperatorRequiresNumber,
@@ -7435,7 +7435,7 @@ namespace System.Management.Automation.Language
             if (string.Equals(methodName, "Foreach", StringComparison.OrdinalIgnoreCase))
             {
                 var enumerator = (new object[] { obj }).GetEnumerator();
-                return EnumerableOps.ForEach(enumerator, args[0], Utils.EmptyArray<object>());
+                return EnumerableOps.ForEach(enumerator, args[0], Array.Empty<object>());
             }
 
             throw InterpreterError.NewInterpreterException(methodName, typeof(RuntimeException), null,

src/System.Management.Automation/engine/runtime/CompiledScriptBlock.cs

@@ -96,7 +96,7 @@ namespace System.Management.Automation
                 CmdletBindingAttribute cmdletBindingAttribute = null;
                 if (!Ast.HasAnyScriptBlockAttributes())
                 {
-                    attributes = Utils.EmptyArray<Attribute>();
+                    attributes = Array.Empty<Attribute>();
                 }
                 else
                 {
@@ -963,7 +963,7 @@ namespace System.Management.Automation
 
             if (args == null)
             {
-                args = Utils.EmptyArray<object>();
+                args = Array.Empty<object>();
             }
 
             bool runOptimized = context._debuggingMode > 0 ? false : createLocalScope;
@@ -1289,7 +1289,7 @@ namespace System.Management.Automation
             var leftOverArgs = args.Length - parameters.Length;
             if (leftOverArgs <= 0)
             {
-                return Utils.EmptyArray<object>();
+                return Array.Empty<object>();
             }
 
             object[] result = new object[leftOverArgs];

src/System.Management.Automation/engine/runtime/Operations/ClassOps.cs

@@ -99,7 +99,7 @@ namespace System.Management.Automation.Internal
     public class ScriptBlockMemberMethodWrapper
     {
         /// <summary>Used in codegen</summary>
-        public static readonly object[] _emptyArgumentArray = Utils.EmptyArray<object>(); // See TypeDefiner.DefineTypeHelper.DefineMethodBody
+        public static readonly object[] _emptyArgumentArray = Array.Empty<object>(); // See TypeDefiner.DefineTypeHelper.DefineMethodBody
 
         /// <summary>
         /// Indicate the wrapper is for a static member method.

src/System.Management.Automation/engine/runtime/ScriptBlockToPowerShell.cs

@@ -228,7 +228,7 @@ namespace System.Management.Automation
 
             if (args == null)
             {
-                args = Utils.EmptyArray<object>();
+                args = Array.Empty<object>();
             }
 
             // Perform validations on the ScriptBlock.  GetSimplePipeline can allow for more than one

src/System.Management.Automation/help/HelpInfo.cs

@@ -146,7 +146,7 @@ namespace System.Management.Automation
         /// </remarks>
         internal virtual PSObject[] GetParameter(string pattern)
         {
-            return new PSObject[0];
+            return Array.Empty<PSObject>();
         }
 
         /// <summary>

src/System.Management.Automation/namespaces/RegistryProvider.cs

@@ -3116,7 +3116,7 @@ namespace Microsoft.PowerShell.Commands
                 case RegistryValueKind.Binary:
                 case RegistryValueKind.Unknown:
                     {
-                        defaultValue = new byte[0];
+                        defaultValue = Array.Empty<byte>();
                     }
 
                     break;
@@ -3135,7 +3135,7 @@ namespace Microsoft.PowerShell.Commands
                     break;
                 case RegistryValueKind.MultiString:
                     {
-                        defaultValue = new string[0];
+                        defaultValue = Array.Empty<string>();
                     }
 
                     break;

src/System.Management.Automation/utils/CommandDiscoveryExceptions.cs

@@ -436,7 +436,7 @@ namespace System.Management.Automation
             get { return _missingPSSnapIns; }
         }
 
-        private ReadOnlyCollection<string> _missingPSSnapIns = new ReadOnlyCollection<string>(new string[0]);
+        private ReadOnlyCollection<string> _missingPSSnapIns = new ReadOnlyCollection<string>(Array.Empty<string>());
 
         /// <summary>
         /// Gets or sets the ID of the shell.

src/System.Management.Automation/utils/ExtensionMethods.cs

@@ -70,11 +70,6 @@ namespace System.Management.Automation
     /// </summary>
     internal static partial class PSTypeExtensions
     {
-        /// <summary>
-        /// Type.EmptyTypes is not in CoreCLR. Use this one to replace it.
-        /// </summary>
-        internal static Type[] EmptyTypes = new Type[0];
-
         /// <summary>
         /// Check does the type have an instance default constructor with visibility that allows calling it from subclass.
         /// </summary>

src/System.Management.Automation/utils/ParameterBinderExceptions.cs

@@ -487,12 +487,12 @@ namespace System.Management.Automation
         #region private
 
         private string _resourceString;
-        private object[] _args = new object[0];
+        private object[] _args = Array.Empty<object>();
         private string _commandName;
 
         private string BuildMessage()
         {
-            object[] messageArgs = new object[0];
+            object[] messageArgs = Array.Empty<object>();
 
             if (_args != null)
             {

src/System.Management.Automation/utils/StructuredTraceSource.cs

@@ -903,7 +903,7 @@ namespace System.Management.Automation
                     PSTraceSourceOptions.WriteLine,
                     writeLineFormatter,
                     format,
-                    Utils.EmptyArray<object>());
+                    Array.Empty<object>());
             }
         }