From 59ee2e34d8b39eab22b9c373e04299fb4237b39f Mon Sep 17 00:00:00 2001
From: Alexey Golub <Tyrrrrrr@gmail.com>
Date: Tue, 20 Aug 2019 18:12:22 +0300
Subject: [PATCH] Don't add abstract and interface types that implement
 ICommand

---
 CliFx/CliApplicationBuilder.cs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/CliFx/CliApplicationBuilder.cs b/CliFx/CliApplicationBuilder.cs
index 6eb0494..80fd00e 100644
--- a/CliFx/CliApplicationBuilder.cs
+++ b/CliFx/CliApplicationBuilder.cs
@@ -38,7 +38,9 @@ namespace CliFx
         {
             commandAssembly.GuardNotNull(nameof(commandAssembly));
 
-            var commandTypes = commandAssembly.ExportedTypes.Where(t => t.Implements(typeof(ICommand)));
+            var commandTypes = commandAssembly.ExportedTypes
+                .Where(t => t.Implements(typeof(ICommand)))
+                .Where(t => !t.IsAbstract && !t.IsInterface);
 
             foreach (var commandType in commandTypes)
                 AddCommand(commandType);