NadekoBot.Extensions should now be fully annotated with nullable reference types as well as many classes from NadekoBot.Common

src/NadekoBot/Modules/Games/Common/TypingGame.cs

@@ -1,4 +1,5 @@
-using System.Diagnostics;
+#nullable disable
+using System.Diagnostics;
 using NadekoBot.Modules.Games.Services;
 using CommandLine;
 
@@ -172,4 +173,4 @@ public class TypingGame
 
     private static bool Judge(int errors, int textLength) => errors <= textLength / 25;
 
-}
+}