Fix browser platform compatibility issues with Console and Threading APIs

Co-authored-by: thomhurst <[email protected]>

Author: Copilot

TUnit.Core/EngineCancellationToken.cs

@@ -27,7 +27,15 @@ internal void Initialise(CancellationToken cancellationToken)
         CancellationTokenSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
         Token = CancellationTokenSource.Token;
 
-        Console.CancelKeyPress += OnCancelKeyPress;
+        // Console.CancelKeyPress is not supported on browser platforms
+#if NET5_0_OR_GREATER
+        if (!OperatingSystem.IsBrowser())
+        {
+#endif
+            Console.CancelKeyPress += OnCancelKeyPress;
+#if NET5_0_OR_GREATER
+        }
+#endif
     }
 
     private void OnCancelKeyPress(object? sender, ConsoleCancelEventArgs e)
@@ -68,7 +76,15 @@ private void OnCancelKeyPress(object? sender, ConsoleCancelEventArgs e)
     /// </summary>
     public void Dispose()
     {
-        Console.CancelKeyPress -= OnCancelKeyPress;
+        // Console.CancelKeyPress is not supported on browser platforms
+#if NET5_0_OR_GREATER
+        if (!OperatingSystem.IsBrowser())
+        {
+#endif
+            Console.CancelKeyPress -= OnCancelKeyPress;
+#if NET5_0_OR_GREATER
+        }
+#endif
         _forcefulExitCts?.Cancel();
         _forcefulExitCts?.Dispose();
         CancellationTokenSource.Dispose();

TUnit.Core/Executors/DedicatedThreadExecutor.cs

@@ -7,6 +7,15 @@ public class DedicatedThreadExecutor : GenericAbstractExecutor, ITestRegisteredE
 {
     protected sealed override async ValueTask ExecuteAsync(Func<ValueTask> action)
     {
+        // On browser platforms, threading is not supported, so fall back to direct execution
+#if NET5_0_OR_GREATER
+        if (OperatingSystem.IsBrowser())
+        {
+            await action();
+            return;
+        }
+#endif
+
         var tcs = new TaskCompletionSource<object?>();
 
         var thread = new Thread(() =>

TUnit.Engine/Logging/TUnitFrameworkLogger.cs

@@ -76,7 +76,16 @@ private static ConsoleColor GetConsoleColor(LogLevel logLevel)
             return ConsoleColor.DarkRed;
         }
 
+        // Console.ForegroundColor is not supported on browser platforms
+#if NET5_0_OR_GREATER
+        if (!OperatingSystem.IsBrowser())
+        {
+            return Console.ForegroundColor;
+        }
+        return ConsoleColor.Gray; // Default color for browser platforms
+#else
         return Console.ForegroundColor;
+#endif
     }
 
     public bool IsEnabled(LogLevel logLevel)