replace IConsole with two TextWriters in Configuration

samples/RenderingPlayground/Program.cs

@@ -3,6 +3,7 @@
 
 using System;
 using System.CommandLine.Invocation;
+using System.CommandLine.IO;
 using System.CommandLine.Rendering;
 using System.CommandLine.Rendering.Views;
 using System.IO;
@@ -44,7 +45,7 @@ public static void Main(
                                     height ?? Console.WindowHeight,
                                     overwrite);
 
-            var console = invocationContext.Console;
+            var console = new SystemConsole();
 
             if (overwrite && 
                 console is ITerminal terminal)

src/System.CommandLine.ApiCompatibility.Tests/ApiCompatibilityApprovalTests.System_CommandLine_NamingConventionBinder_api_is_not_changed.approved.txt

@@ -1,6 +1,5 @@
 System.CommandLine.Binding
   public class BindingContext, System.IServiceProvider
-    public System.CommandLine.IConsole Console { get; }
     public System.CommandLine.ParseResult ParseResult { get; }
     public System.Void AddService(System.Type serviceType, System.Func<System.IServiceProvider,System.Object> factory)
     public System.Void AddService<T>(Func<System.IServiceProvider,T> factory)

src/System.CommandLine.ApiCompatibility.Tests/ApiCompatibilityApprovalTests.System_CommandLine_api_is_not_changed.approved.txt

@@ -55,11 +55,6 @@ System.CommandLine
     public ParseResult Parse(System.String commandLine, CommandLineConfiguration configuration = null)
     public System.Void SetAction(System.Action<System.CommandLine.Invocation.InvocationContext> action)
     public System.Void SetAction(System.Func<System.CommandLine.Invocation.InvocationContext,System.Threading.CancellationToken,System.Threading.Tasks.Task> action)
-  public static class CommandExtensions
-    public static System.Int32 Invoke(this Command command, System.String[] args, IConsole console = null)
-    public static System.Int32 Invoke(this Command command, System.String commandLine, IConsole console = null)
-    public static System.Threading.Tasks.Task<System.Int32> InvokeAsync(this Command command, System.String[] args, IConsole console = null, System.Threading.CancellationToken cancellationToken = null)
-    public static System.Threading.Tasks.Task<System.Int32> InvokeAsync(this Command command, System.String commandLine, IConsole console = null, System.Threading.CancellationToken cancellationToken = null)
   public class CommandLineBuilder
     .ctor(Command rootCommand)
     public Command Command { get; }
@@ -85,11 +80,13 @@ System.CommandLine
     public System.Collections.Generic.IReadOnlyList<Directive> Directives { get; }
     public System.Boolean EnablePosixBundling { get; }
     public System.Boolean EnableTokenReplacement { get; }
+    public System.IO.TextWriter Error { get; set; }
+    public System.IO.TextWriter Output { get; set; }
     public Command RootCommand { get; }
-    public System.Int32 Invoke(System.String commandLine, IConsole console = null)
-    public System.Int32 Invoke(System.String[] args, IConsole console = null)
-    public System.Threading.Tasks.Task<System.Int32> InvokeAsync(System.String commandLine, IConsole console = null, System.Threading.CancellationToken cancellationToken = null)
-    public System.Threading.Tasks.Task<System.Int32> InvokeAsync(System.String[] args, IConsole console = null, System.Threading.CancellationToken cancellationToken = null)
+    public System.Int32 Invoke(System.String commandLine)
+    public System.Int32 Invoke(System.String[] args)
+    public System.Threading.Tasks.Task<System.Int32> InvokeAsync(System.String commandLine, System.Threading.CancellationToken cancellationToken = null)
+    public System.Threading.Tasks.Task<System.Int32> InvokeAsync(System.String[] args, System.Threading.CancellationToken cancellationToken = null)
     public System.Void ThrowIfInvalid()
   public class CommandLineConfigurationException : System.Exception, System.Runtime.Serialization.ISerializable
     .ctor(System.String message)
@@ -105,7 +102,6 @@ System.CommandLine
   public class EnvironmentVariablesDirective : Directive
     .ctor()
     public CliAction Action { get; set; }
-  public interface IConsole : System.CommandLine.IO.IStandardError, System.CommandLine.IO.IStandardIn, System.CommandLine.IO.IStandardOut
   public abstract class Option : Symbol, System.CommandLine.Binding.IValueDescriptor
     public CliAction Action { get; set; }
     public System.Collections.Generic.ICollection<System.String> Aliases { get; }
@@ -151,8 +147,8 @@ System.CommandLine
     public T GetValue<T>(Argument<T> argument)
     public T GetValue<T>(Option<T> option)
     public T GetValue<T>(System.String name)
-    public System.Int32 Invoke(IConsole console = null)
-    public System.Threading.Tasks.Task<System.Int32> InvokeAsync(IConsole console = null, System.Threading.CancellationToken cancellationToken = null)
+    public System.Int32 Invoke()
+    public System.Threading.Tasks.Task<System.Int32> InvokeAsync(System.Threading.CancellationToken cancellationToken = null)
     public System.String ToString()
   public class RootCommand : Command, System.Collections.Generic.IEnumerable<Symbol>, System.Collections.IEnumerable
     public static System.String ExecutableName { get; }
@@ -247,46 +243,10 @@ System.CommandLine.Help
     public System.Int32 GetHashCode()
 System.CommandLine.Invocation
   public class InvocationContext
-    .ctor(System.CommandLine.ParseResult parseResult, System.CommandLine.IConsole console = null)
-    public System.CommandLine.IConsole Console { get; set; }
+    .ctor(System.CommandLine.ParseResult parseResult)
     public System.CommandLine.ParseResult ParseResult { get; set; }
     public T GetValue<T>(Option<T> option)
     public T GetValue<T>(Argument<T> argument)
-System.CommandLine.IO
-  public interface IStandardError
-    public IStandardStreamWriter Error { get; }
-    public System.Boolean IsErrorRedirected { get; }
-  public interface IStandardIn
-    public System.Boolean IsInputRedirected { get; }
-  public interface IStandardOut
-    public System.Boolean IsOutputRedirected { get; }
-    public IStandardStreamWriter Out { get; }
-  public interface IStandardStreamWriter
-    public System.Void Write(System.String value)
-  public static class StandardStreamWriter
-    public static IStandardStreamWriter Create(System.IO.TextWriter writer)
-    public static System.IO.TextWriter CreateTextWriter(this IStandardStreamWriter writer)
-    public static System.Void WriteLine(this IStandardStreamWriter writer)
-    public static System.Void WriteLine(this IStandardStreamWriter writer, System.String value)
-  public class SystemConsole, System.CommandLine.IConsole, IStandardError, IStandardIn, IStandardOut
-    .ctor()
-    public IStandardStreamWriter Error { get; }
-    public System.Boolean IsErrorRedirected { get; }
-    public System.Boolean IsInputRedirected { get; }
-    public System.Boolean IsOutputRedirected { get; }
-    public IStandardStreamWriter Out { get; }
-  public class TestConsole, System.CommandLine.IConsole, IStandardError, IStandardIn, IStandardOut
-    .ctor()
-    public IStandardStreamWriter Error { get; }
-    public System.Boolean IsErrorRedirected { get; }
-    public System.Boolean IsInputRedirected { get; }
-    public System.Boolean IsOutputRedirected { get; }
-    public IStandardStreamWriter Out { get; }
-    protected System.Void set_Error(IStandardStreamWriter value)
-    protected System.Void set_IsErrorRedirected(System.Boolean value)
-    protected System.Void set_IsInputRedirected(System.Boolean value)
-    protected System.Void set_IsOutputRedirected(System.Boolean value)
-    protected System.Void set_Out(IStandardStreamWriter value)
 System.CommandLine.Parsing
   public class ArgumentResult : SymbolResult
     public System.CommandLine.Argument Argument { get; }

src/System.CommandLine.Benchmarks/CommandLine/Perf_Parser_Directives_Suggest.cs

@@ -14,14 +14,11 @@ namespace System.CommandLine.Benchmarks.CommandLine
     [BenchmarkCategory(Categories.CommandLine)]
     public class Perf_Parser_Directives_Suggest
     {
-        private NullConsole _nullConsole;
         private CommandLineConfiguration _configuration;
 
         [GlobalSetup]
         public void Setup()
         {
-            _nullConsole = new NullConsole();
-
             Option<string> fruitOption = new("--fruit");
             fruitOption.CompletionSources.Add("apple", "banana", "cherry");
 
@@ -37,6 +34,7 @@ public void Setup()
             _configuration = new CommandLineBuilder(eatCommand)
                 .UseSuggestDirective()
                 .Build();
+            _configuration.Output = System.IO.TextWriter.Null;
         }
 
         [Params(
@@ -47,7 +45,7 @@ public void Setup()
 
         [Benchmark]
         public Task InvokeSuggest()
-            => _configuration.InvokeAsync(TestCmdArgs, _nullConsole);
+            => _configuration.InvokeAsync(TestCmdArgs);
 
     }
 }

src/System.CommandLine.Benchmarks/CommandLine/Perf_Parser_Simple.cs

@@ -11,10 +11,10 @@ public class Perf_Parser_Simple
         public string[] Args { get; set; }
 
         [Benchmark]
-        public int DefaultsSync() => BuildCommand().Invoke(Args);
+        public int DefaultsSync() => BuildCommand().Parse(Args).Invoke();
 
         [Benchmark]
-        public Task<int> DefaultsAsync() => BuildCommand().InvokeAsync(Args);
+        public Task<int> DefaultsAsync() => BuildCommand().Parse(Args).InvokeAsync();
 
         [Benchmark]
         public int MinimalSync() => new CommandLineBuilder(BuildCommand()).Build().Invoke(Args);

src/System.CommandLine.Benchmarks/CommandLine/Perf_Parser_TypoCorrection.cs

@@ -3,7 +3,6 @@
 
 using System.Collections.Generic;
 using System.CommandLine.Benchmarks.Helpers;
-using System.CommandLine.Parsing;
 using System.Linq;
 using System.Threading.Tasks;
 using BenchmarkDotNet.Attributes;
@@ -16,7 +15,6 @@ namespace System.CommandLine.Benchmarks.CommandLine
     [BenchmarkCategory(Categories.CommandLine)]
     public class Perf_Parser_TypoCorrection
     {
-        private readonly NullConsole _nullConsole = new();
         private readonly CommandLineConfiguration _configuration;
 
         public Perf_Parser_TypoCorrection()
@@ -26,6 +24,7 @@ public Perf_Parser_TypoCorrection()
             _configuration = new CommandLineBuilder(new RootCommand { option })
                           .UseTypoCorrections()
                           .Build();
+            _configuration.Output = System.IO.TextWriter.Null;
         }
 
         public IEnumerable<BdnParam<ParseResult>> GenerateTestParseResults()
@@ -54,6 +53,6 @@ public IEnumerable<BdnParam<ParseResult>> GenerateTestParseResults()
         [Benchmark]
         [ArgumentsSource(nameof(GenerateTestParseResults))]
         public Task TypoCorrection(BdnParam<ParseResult> parseResult)
-            => parseResult.Value.InvokeAsync(_nullConsole);
+            => parseResult.Value.InvokeAsync();
     }
 }

src/System.CommandLine.Benchmarks/DragonFruit/Perf_CommandLine_EntryPoint.cs

@@ -20,7 +20,6 @@ namespace System.CommandLine.Benchmarks.DragonFruit
     [InvocationCount(3000)]
     public class Perf_CommandLine_EntryPoint
     {
-        private readonly NullConsole _nullConsole = new();
         private Assembly _testAssembly;
         private string _testAssemblyFilePath;
         private string _testAssemblyXmlDocsFilePath;
@@ -134,17 +133,15 @@ public Task SearchForStartingPointUsingReflection()
                     _testAssembly,
                     new string[] { },
                     null,
-                    _testAssemblyXmlDocsFilePath,
-                   _nullConsole);
+                    _testAssemblyXmlDocsFilePath);
 
         [Benchmark(Description = "ExecuteAssemblyAsync explicit entry point.")]
         public Task SearchForStartingPointWhenGivenEntryPointClass()
             => System.CommandLine.DragonFruit.CommandLine.ExecuteAssemblyAsync(
                 _testAssembly,
                 new string[] { },
                 "PerfTestApp.Program",
-                _testAssemblyXmlDocsFilePath,
-                _nullConsole);
+                _testAssemblyXmlDocsFilePath);
 
         [GlobalCleanup]
         public void Cleanup()

src/System.CommandLine.Benchmarks/DragonFruit/Perf_CommandLine_Help.cs

@@ -17,7 +17,6 @@ namespace System.CommandLine.Benchmarks.DragonFruit
     [InvocationCount(3000)]
     public class Perf_CommandLine_Help
     {
-        private readonly NullConsole _nullConsole = new();
         private Assembly _testAssembly;
         private string _testAssemblyFilePath;
         private string _testAssemblyXmlDocsFilePath;
@@ -44,8 +43,7 @@ public Task SearchForStartingPointWhenGivenEntryPointClass_Help()
                 _testAssembly,
                 new[] { "--help" },
                 null,
-                _testAssemblyXmlDocsFilePath,
-                _nullConsole);
+                _testAssemblyXmlDocsFilePath);
 
         [GlobalCleanup]
         public void Cleanup()