diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Update-TypeData.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Update-TypeData.cs
index f1b405ea84..77c3cd12fe 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Update-TypeData.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/Update-TypeData.cs
@@ -980,7 +980,7 @@ namespace Microsoft.PowerShell.Commands
                         FormatAndTypeDataHelper.ThrowExceptionOnError("ErrorsUpdatingFormats",
                             null,
                             entries,
-                            RunspaceConfigurationCategory.Formats);
+                            FormatAndTypeDataHelper.Category.Formats);
                     }
                 }
                 catch (RuntimeException e)
diff --git a/src/System.Management.Automation/engine/CommandDiscovery.cs b/src/System.Management.Automation/engine/CommandDiscovery.cs
index 8b37264332..5d4546d506 100644
--- a/src/System.Management.Automation/engine/CommandDiscovery.cs
+++ b/src/System.Management.Automation/engine/CommandDiscovery.cs
@@ -137,15 +137,6 @@ namespace System.Management.Automation
             discoveryTracer.ShowHeaders = false;
         }
 
-        private void AddCmdletToCache(CmdletConfigurationEntry entry)
-        {
-            if (!IsSpecialCmdlet(entry.ImplementingType))
-            {
-                CmdletInfo newCmdletInfo = NewCmdletInfo(entry, SessionStateEntryVisibility.Public);
-                AddCmdletInfoToCache(newCmdletInfo.Name, newCmdletInfo, isGlobal: true);
-            }
-        }
-
         /// <summary>
         /// Determines if the cmdlet is a cmdlet that shouldn't be in the discovery list.
         /// </summary>
@@ -163,13 +154,6 @@ namespace System.Management.Automation
             return implementingType == typeof(OutLineOutputCommand) || implementingType == typeof(FormatDefaultCommand);
         }
 
-        private CmdletInfo NewCmdletInfo(CmdletConfigurationEntry entry, SessionStateEntryVisibility visibility)
-        {
-            CmdletInfo ci = new CmdletInfo(entry.Name, entry.ImplementingType, entry.HelpFileName, entry.PSSnapIn, Context);
-            ci.Visibility = visibility;
-            return ci;
-        }
-
         private CmdletInfo NewCmdletInfo(SessionStateCmdletEntry entry)
         {
             return NewCmdletInfo(entry, Context);
@@ -1555,49 +1539,6 @@ namespace System.Management.Automation
             }
         }
 
-        /// <summary>
-        /// Removes a cmdlet from the cmdlet cache.
-        /// </summary>
-        /// <param name="entry">
-        /// The configuration entry for the cmdlet which is being removed.
-        /// </param>
-        private void RemoveCmdletFromCache(CmdletConfigurationEntry entry)
-        {
-            IDictionary<string, List<CmdletInfo>> cmdletTable = Context.EngineSessionState.GetCmdletTable();
-            List<CmdletInfo> cacheEntry;
-            if (cmdletTable.TryGetValue(entry.Name, out cacheEntry))
-            {
-                int removalIndex = GetCmdletRemovalIndex(cacheEntry, entry.PSSnapIn == null ? String.Empty : entry.PSSnapIn.Name);
-
-                if (removalIndex >= 0)
-                {
-                    string name = cacheEntry[removalIndex].Name;
-                    cacheEntry.RemoveAt(removalIndex);
-                    Context.EngineSessionState.RemoveCmdlet(name, removalIndex, true);
-                }
-
-                // Remove the entry from the cache if there are no more cmdlets
-                if (cacheEntry.Count == 0)
-                {
-                    Context.EngineSessionState.RemoveCmdletEntry(entry.Name, true);
-                }
-            }
-        }
-
-        private int GetCmdletRemovalIndex(List<CmdletInfo> cacheEntry, string PSSnapin)
-        {
-            int removalIndex = -1;
-            for (int index = 0; index < cacheEntry.Count; ++index)
-            {
-                if (String.Equals(cacheEntry[index].ModuleName, PSSnapin, StringComparison.OrdinalIgnoreCase))
-                {
-                    removalIndex = index;
-                    break;
-                }
-            }
-            return removalIndex;
-        }
-
         internal ExecutionContext Context { get; }
 
         internal static PSModuleAutoLoadingPreference GetCommandDiscoveryPreference(ExecutionContext context, VariablePath variablePath, string environmentVariable)
diff --git a/src/System.Management.Automation/engine/RunspaceConfigurationEntry.cs b/src/System.Management.Automation/engine/RunspaceConfigurationEntry.cs
deleted file mode 100644
index 774944fd10..0000000000
--- a/src/System.Management.Automation/engine/RunspaceConfigurationEntry.cs
+++ /dev/null
@@ -1,529 +0,0 @@
-// Copyright (c) Microsoft Corporation. All rights reserved.
-// Licensed under the MIT License.
-
-#pragma warning disable 1634, 1691
-#pragma warning disable 56506
-
-namespace System.Management.Automation.Runspaces
-{
-    /// <summary>
-    /// Enum for describing different kind information that can be configured in runspace configuration.
-    /// </summary>
-    internal enum RunspaceConfigurationCategory
-    {
-        /// <summary>
-        /// Cmdlets
-        /// </summary>
-        Cmdlets,
-
-        /// <summary>
-        /// Providers
-        /// </summary>
-        Providers,
-
-        /// <summary>
-        /// Assemblies
-        /// </summary>
-        Assemblies,
-
-        /// <summary>
-        /// Scripts
-        /// </summary>
-        Scripts,
-
-        /// <summary>
-        /// Initialization scripts
-        /// </summary>
-        InitializationScripts,
-
-        /// <summary>
-        /// Types
-        /// </summary>
-        Types,
-
-        /// <summary>
-        /// Formats
-        /// </summary>
-        Formats,
-    }
-
-    /// <summary>
-    /// Define class for runspace configuration entry.
-    /// </summary>
-    /// <remarks>
-    /// This abstract class is to be derived internally by Monad for different
-    /// runspace configuration entries only. Developers should not derive from
-    /// this class.
-    /// </remarks>
-    internal abstract class RunspaceConfigurationEntry
-    {
-        /// <summary>
-        /// Initiate an instance of runspace configuration entry.
-        /// </summary>
-        /// <param name="name">Name for the runspace configuration entry</param>
-        /// <!--
-        /// This is meant to be called by derived class only. It doesn't make sense to
-        /// directly create an instance of this class.
-        /// -->
-        protected RunspaceConfigurationEntry(string name)
-        {
-            if (String.IsNullOrEmpty(name) || String.IsNullOrEmpty(name.Trim()))
-            {
-                throw PSTraceSource.NewArgumentNullException("name");
-            }
-
-            Name = name.Trim();
-        }
-
-        /// <summary>
-        /// Initiate an instance of runspace configuration entry.
-        /// </summary>
-        /// <param name="name">Name for the runspace configuration entry</param>
-        /// <param name="psSnapin">The name of the PSSnapin the entry comes from.</param>
-        /// <!--
-        /// This is meant to be called by derived class only. It doesn't make sense to
-        /// directly create an instance of this class.
-        /// -->
-        internal RunspaceConfigurationEntry(string name, PSSnapInInfo psSnapin)
-        {
-            if (String.IsNullOrEmpty(name) || String.IsNullOrEmpty(name.Trim()))
-            {
-                throw PSTraceSource.NewArgumentNullException("name");
-            }
-
-            Name = name.Trim();
-
-            if (psSnapin == null)
-            {
-                throw PSTraceSource.NewArgumentException("psSnapin");
-            }
-
-            PSSnapIn = psSnapin;
-        }
-
-        /// <summary>
-        /// Gets name of configuration entry
-        /// </summary>
-        public string Name { get; }
-
-        /// <summary>
-        /// Gets name of PSSnapin that this configuration entry belongs to.
-        /// </summary>
-        public PSSnapInInfo PSSnapIn { get; } = null;
-
-        internal bool _builtIn = false;
-        /// <summary>
-        /// Get whether this entry is a built-in entry.
-        /// </summary>
-        public bool BuiltIn
-        {
-            get
-            {
-                return _builtIn;
-            }
-        }
-
-        internal UpdateAction _action = UpdateAction.None;
-        internal UpdateAction Action
-        {
-            get
-            {
-                return _action;
-            }
-        }
-    }
-
-    /// <summary>
-    /// Defines class for type configuration entry.
-    /// </summary>
-    internal sealed class TypeConfigurationEntry : RunspaceConfigurationEntry
-    {
-        /// <summary>
-        /// Initiate an instance for type configuration entry.
-        /// </summary>
-        /// <param name="name">Name of the type configuration entry</param>
-        /// <param name="fileName">File name that contains the types configuration information.</param>
-        /// <exception cref="ArgumentException">when <paramref name="fileName"/> is null or empty</exception>
-        public TypeConfigurationEntry(string name, string fileName)
-            : base(name)
-        {
-            if (String.IsNullOrEmpty(fileName) || String.IsNullOrEmpty(fileName.Trim()))
-            {
-                throw PSTraceSource.NewArgumentException("fileName");
-            }
-
-            FileName = fileName.Trim();
-        }
-
-        /// <summary>
-        /// Initiate an instance for type configuration entry.
-        /// </summary>
-        /// <param name="typeData">TypeData instance</param>
-        /// <param name="isRemove">Specify the operation with the typedata</param>
-        public TypeConfigurationEntry(TypeData typeData, bool isRemove)
-            : base("*")
-        {
-            if (typeData == null)
-            {
-                throw PSTraceSource.NewArgumentException("typeData");
-            }
-
-            TypeData = typeData;
-            IsRemove = isRemove;
-        }
-
-        /// <summary>
-        /// Initiate an instance for type configuration entry.
-        /// </summary>
-        /// <param name="name">Name of the type configuration entry</param>
-        /// <param name="fileName">File name that contains the types configuration information.</param>
-        /// <param name="psSnapinInfo">PSSnapin from which type info comes.</param>
-        /// <exception cref="ArgumentException">when <paramref name="fileName"/> is null, empty or does not end in .ps1xml</exception>
-        internal TypeConfigurationEntry(string name, string fileName, PSSnapInInfo psSnapinInfo)
-            : base(name, psSnapinInfo)
-        {
-            if (String.IsNullOrEmpty(fileName) || String.IsNullOrEmpty(fileName.Trim()))
-            {
-                throw PSTraceSource.NewArgumentException("fileName");
-            }
-
-            FileName = fileName.Trim();
-        }
-
-        /// <summary>
-        /// Initiate an instance for type configuration entry.
-        /// </summary>
-        /// <param name="fileName">File name that contains the types configuration information.</param>
-        /// <exception cref="ArgumentException">when <paramref name="fileName"/> is null, empty or does not end in .ps1xml</exception>
-        public TypeConfigurationEntry(string fileName)
-            : base(fileName)
-        {
-            if (String.IsNullOrEmpty(fileName) || String.IsNullOrEmpty(fileName.Trim()))
-            {
-                throw PSTraceSource.NewArgumentException("fileName");
-            }
-#pragma warning suppress 56506
-            FileName = fileName.Trim();
-        }
-
-        /// <summary>
-        /// Gets file name that contains the types configuration information.
-        /// </summary>
-        /// <value></value>
-        public string FileName { get; }
-
-        /// <summary>
-        /// Get the strong type data contains the type configuration information
-        /// </summary>
-        public TypeData TypeData { get; }
-
-        /// <summary>
-        /// Set to true if the strong type data is to be removed
-        /// </summary>
-        public bool IsRemove { get; }
-    }
-
-    /// <summary>
-    /// Defines class for type configuration entry.
-    /// </summary>
-    internal sealed class FormatConfigurationEntry : RunspaceConfigurationEntry
-    {
-        /// <summary>
-        /// Initiate an instance for type configuration entry.
-        /// </summary>
-        /// <param name="name">Name of the format configuration entry</param>
-        /// <param name="fileName">File name that contains the format configuration information.</param>
-        /// <exception cref="ArgumentException">when <paramref name="fileName"/> is null or empty</exception>
-        public FormatConfigurationEntry(string name, string fileName)
-            : base(name)
-        {
-            if (String.IsNullOrEmpty(fileName) || String.IsNullOrEmpty(fileName.Trim()))
-            {
-                throw PSTraceSource.NewArgumentException("fileName");
-            }
-
-            FileName = fileName.Trim();
-        }
-
-        /// <summary>
-        /// Initiate an instance for Format configuration entry.
-        /// </summary>
-        /// <param name="name">Name of the Format configuration entry</param>
-        /// <param name="fileName">File name that contains the Formats configuration information.</param>
-        /// <param name="psSnapinInfo">PSSnapin from which the format comes.</param>
-        /// <exception cref="ArgumentException">when <paramref name="fileName"/> is null, empty or does not end in .ps1xml</exception>
-        internal FormatConfigurationEntry(string name, string fileName, PSSnapInInfo psSnapinInfo)
-            : base(name, psSnapinInfo)
-        {
-            if (String.IsNullOrEmpty(fileName) || String.IsNullOrEmpty(fileName.Trim()))
-            {
-                throw PSTraceSource.NewArgumentException("fileName");
-            }
-
-            FileName = fileName.Trim();
-        }
-
-        /// <summary>
-        /// Initiate an instance for type configuration entry.
-        /// </summary>
-        /// <param name="fileName">File name that contains the format configuration information.</param>
-        /// <exception cref="ArgumentException">when <paramref name="fileName"/> is null or empty</exception>
-        public FormatConfigurationEntry(string fileName)
-            : base(fileName)
-        {
-            if (String.IsNullOrEmpty(fileName) || String.IsNullOrEmpty(fileName.Trim()))
-            {
-                throw PSTraceSource.NewArgumentException("fileName");
-            }
-#pragma warning suppress 56506
-            FileName = fileName.Trim();
-        }
-
-        /// <summary>
-        /// Initiate an instance for type configuration entry.
-        /// </summary>
-        /// <param name="typeDefinition"></param>
-        public FormatConfigurationEntry(ExtendedTypeDefinition typeDefinition)
-            : base("*")
-        {
-            if (typeDefinition == null)
-            {
-                throw PSTraceSource.NewArgumentNullException("typeDefinition");
-            }
-            FormatData = typeDefinition;
-        }
-
-        /// <summary>
-        /// Gets file name that contains the format configuration information.
-        /// </summary>
-        /// <value>File name that contains the format configuration information.</value>
-        public string FileName { get; }
-
-        /// <summary>
-        /// Get the typeDefinition that contains the format configuration information
-        /// </summary>
-        public ExtendedTypeDefinition FormatData { get; }
-    }
-
-    /// <summary>
-    /// Class to define configuration data for cmdlets
-    /// </summary>
-    internal sealed class CmdletConfigurationEntry : RunspaceConfigurationEntry
-    {
-        /// <summary>
-        /// Initiate an instance for cmdlet configuration entry.
-        /// </summary>
-        /// <param name="name">Name of the cmdlet configuration entry</param>
-        /// <param name="implementingType">Class that include implementation of the cmdlet</param>
-        /// <param name="helpFileName">Name of the help file that include help information for the cmdlet</param>
-        public CmdletConfigurationEntry(string name, Type implementingType, string helpFileName)
-            : base(name)
-        {
-            if (implementingType == null)
-            {
-                throw PSTraceSource.NewArgumentNullException("implementingType");
-            }
-
-            ImplementingType = implementingType;
-
-            if (!String.IsNullOrEmpty(helpFileName))
-            {
-                HelpFileName = helpFileName.Trim();
-            }
-            else
-            {
-                HelpFileName = helpFileName;
-            }
-        }
-
-        /// <summary>
-        /// Initiate an instance for cmdlet configuration entry.
-        /// </summary>
-        /// <param name="name">Name of the cmdlet configuration entry</param>
-        /// <param name="implementingType">Class that include implementation of the cmdlet</param>
-        /// <param name="psSnapinInfo">PSSnapin from which the cmdlet comes.</param>
-        /// <param name="helpFileName">Name of the help file that include help information for the cmdlet</param>
-        internal CmdletConfigurationEntry(string name, Type implementingType, string helpFileName, PSSnapInInfo psSnapinInfo)
-            : base(name, psSnapinInfo)
-        {
-            if (implementingType == null)
-            {
-                throw PSTraceSource.NewArgumentNullException("implementingType");
-            }
-
-            ImplementingType = implementingType;
-
-            if (!String.IsNullOrEmpty(helpFileName))
-            {
-                HelpFileName = helpFileName.Trim();
-            }
-            else
-            {
-                HelpFileName = helpFileName;
-            }
-        }
-
-        /// <summary>
-        /// Get class that include implementation of the cmdlet
-        /// </summary>
-        public Type ImplementingType { get; }
-
-        /// <summary>
-        /// Get name of the help file that include help information for the cmdlet
-        /// </summary>
-        /// <value></value>
-        public string HelpFileName { get; }
-    }
-
-    /// <summary>
-    /// Define class for provider configuration entry
-    /// </summary>
-    internal sealed class ProviderConfigurationEntry : RunspaceConfigurationEntry
-    {
-        /// <summary>
-        /// Initiate an instance for provider configuration entry.
-        /// </summary>
-        /// <param name="name">Name of the provider configuration entry</param>
-        /// <param name="implementingType">Class that include implementation of the provider</param>
-        /// <param name="helpFileName">Name of the help file that include help information for the provider</param>
-        public ProviderConfigurationEntry(string name, Type implementingType, string helpFileName)
-            : base(name)
-        {
-            if (implementingType == null)
-            {
-                throw PSTraceSource.NewArgumentNullException("implementingType");
-            }
-
-            ImplementingType = implementingType;
-
-            if (!String.IsNullOrEmpty(helpFileName))
-            {
-                HelpFileName = helpFileName.Trim();
-            }
-            else
-            {
-                HelpFileName = helpFileName;
-            }
-        }
-
-        /// <summary>
-        /// Initiate an instance for provider configuration entry.
-        /// </summary>
-        /// <param name="name">Name of the provider configuration entry</param>
-        /// <param name="implementingType">Class that include implementation of the provider</param>
-        /// <param name="helpFileName">Name of the help file that include help information for the provider</param>
-        /// <param name="psSnapinInfo">PSSnapin from which provider comes from.</param>
-        internal ProviderConfigurationEntry(string name, Type implementingType, string helpFileName, PSSnapInInfo psSnapinInfo)
-            : base(name, psSnapinInfo)
-        {
-            if (implementingType == null)
-            {
-                throw PSTraceSource.NewArgumentNullException("implementingType");
-            }
-
-            ImplementingType = implementingType;
-
-            if (!String.IsNullOrEmpty(helpFileName))
-            {
-                HelpFileName = helpFileName.Trim();
-            }
-            else
-            {
-                HelpFileName = helpFileName;
-            }
-        }
-
-        /// <summary>
-        /// Get class that include implementation of the provider.
-        /// </summary>
-        /// <value></value>
-        public Type ImplementingType { get; }
-
-        /// <summary>
-        /// Get name of the help file that include help information for the provider
-        /// </summary>
-        public string HelpFileName { get; }
-    }
-
-    /// <summary>
-    /// Define class for script configuration entry
-    /// </summary>
-    internal sealed class ScriptConfigurationEntry : RunspaceConfigurationEntry
-    {
-        /// <summary>
-        /// Initiate an instance for script configuration entry.
-        /// </summary>
-        /// <param name="name">Name of the script configuration entry</param>
-        /// <param name="definition">Content of the script</param>
-        public ScriptConfigurationEntry(string name, string definition)
-            : base(name)
-        {
-            if (String.IsNullOrEmpty(definition) || String.IsNullOrEmpty(definition.Trim()))
-            {
-                throw PSTraceSource.NewArgumentNullException("definition");
-            }
-
-            Definition = definition.Trim();
-        }
-
-        /// <summary>
-        /// Get content for the script.
-        /// </summary>
-        public string Definition { get; }
-    }
-
-    /// <summary>
-    /// Configuration data for assemblies.
-    /// </summary>
-    internal sealed class AssemblyConfigurationEntry : RunspaceConfigurationEntry
-    {
-        /// <summary>
-        /// Initiate an instance for assembly configuration entry.
-        /// </summary>
-        /// <param name="name">Strong name of the assembly</param>
-        /// <param name="fileName">Name of the assembly file</param>
-        public AssemblyConfigurationEntry(string name, string fileName)
-            : base(name)
-        {
-            if (String.IsNullOrEmpty(fileName) || String.IsNullOrEmpty(fileName.Trim()))
-            {
-                throw PSTraceSource.NewArgumentNullException("fileName");
-            }
-
-            FileName = fileName.Trim();
-        }
-
-        /// <summary>
-        /// Initiate an instance for assembly configuration entry.
-        /// </summary>
-        /// <param name="name">Strong name of the assembly</param>
-        /// <param name="fileName">Name of the assembly file</param>
-        /// <param name="psSnapinInfo">PSSnapin information.</param>
-        /// <exception cref="ArgumentException">when <paramref name="fileName"/> is null, empty or does not end in .ps1xml</exception>
-        internal AssemblyConfigurationEntry(string name, string fileName, PSSnapInInfo psSnapinInfo)
-            : base(name, psSnapinInfo)
-        {
-            if (String.IsNullOrEmpty(fileName) || String.IsNullOrEmpty(fileName.Trim()))
-            {
-                throw PSTraceSource.NewArgumentNullException("fileName");
-            }
-
-            FileName = fileName.Trim();
-        }
-
-        /// <summary>
-        /// Get name of the assembly file
-        /// </summary>
-        /// <value>Name of the assembly file</value>
-        public string FileName { get; }
-    }
-
-    internal enum UpdateAction
-    {
-        Add,
-        Remove,
-        None
-    }
-}
-
-#pragma warning restore 56506
\ No newline at end of file
diff --git a/src/System.Management.Automation/engine/TypeTable.cs b/src/System.Management.Automation/engine/TypeTable.cs
index 0070b0e689..0d3e2181ee 100644
--- a/src/System.Management.Automation/engine/TypeTable.cs
+++ b/src/System.Management.Automation/engine/TypeTable.cs
@@ -4214,7 +4214,7 @@ namespace System.Management.Automation.Runspaces
             Update(errors, typeData, false);
             StandardMembersUpdated();
             // Throw exception if there are any errors
-            FormatAndTypeDataHelper.ThrowExceptionOnError("ErrorsUpdatingTypes", errors, RunspaceConfigurationCategory.Types);
+            FormatAndTypeDataHelper.ThrowExceptionOnError("ErrorsUpdatingTypes", errors, FormatAndTypeDataHelper.Category.Types);
         }
 
         /// <summary>
@@ -4240,7 +4240,7 @@ namespace System.Management.Automation.Runspaces
             Update(errors, typeData, true);
             StandardMembersUpdated();
             // Throw exception if there are any errors
-            FormatAndTypeDataHelper.ThrowExceptionOnError("ErrorsUpdatingTypes", errors, RunspaceConfigurationCategory.Types);
+            FormatAndTypeDataHelper.ThrowExceptionOnError("ErrorsUpdatingTypes", errors, FormatAndTypeDataHelper.Category.Types);
         }
 
         /// <summary>
diff --git a/src/System.Management.Automation/utils/FormatAndTypeDataHelper.cs b/src/System.Management.Automation/utils/FormatAndTypeDataHelper.cs
index 3b5c3e31c1..18a493aa69 100644
--- a/src/System.Management.Automation/utils/FormatAndTypeDataHelper.cs
+++ b/src/System.Management.Automation/utils/FormatAndTypeDataHelper.cs
@@ -114,7 +114,7 @@ namespace System.Management.Automation.Runspaces
             string errorId,
             Collection<string> independentErrors,
             Collection<PSSnapInTypeAndFormatErrors> PSSnapinFilesCollection,
-            RunspaceConfigurationCategory category)
+            Category category)
         {
             Collection<string> errors = new Collection<string>();
             if (independentErrors != null)
@@ -148,12 +148,12 @@ namespace System.Management.Automation.Runspaces
             }
 
             string message = string.Empty;
-            if (category == RunspaceConfigurationCategory.Types)
+            if (category == Category.Types)
             {
                 message =
                     StringUtil.Format(ExtendedTypeSystem.TypesXmlError, allErrors.ToString());
             }
-            else if (category == RunspaceConfigurationCategory.Formats)
+            else if (category == Category.Formats)
             {
                 message = StringUtil.Format(FormatAndOutXmlLoadingStrings.FormatLoadingErrors, allErrors.ToString());
             }
@@ -165,7 +165,7 @@ namespace System.Management.Automation.Runspaces
         internal static void ThrowExceptionOnError(
             string errorId,
             ConcurrentBag<string> errors,
-            RunspaceConfigurationCategory category)
+            Category category)
         {
             if (errors.Count == 0)
             {
@@ -182,12 +182,12 @@ namespace System.Management.Automation.Runspaces
             }
 
             string message = string.Empty;
-            if (category == RunspaceConfigurationCategory.Types)
+            if (category == Category.Types)
             {
                 message =
                     StringUtil.Format(ExtendedTypeSystem.TypesXmlError, allErrors.ToString());
             }
-            else if (category == RunspaceConfigurationCategory.Formats)
+            else if (category == Category.Formats)
             {
                 message = StringUtil.Format(FormatAndOutXmlLoadingStrings.FormatLoadingErrors, allErrors.ToString());
             }
@@ -195,6 +195,12 @@ namespace System.Management.Automation.Runspaces
             ex.SetErrorId(errorId);
             throw ex;
         }
+
+        internal enum Category
+        {
+            Types,
+            Formats,
+        }
     }
 }