remove some unused/redundant code

74 files changed, 143 insertions, 134 deletions

diff --git a/src/SMAPI.Installer/InteractiveInstaller.cs b/src/SMAPI.Installer/InteractiveInstaller.cs
index 49ca80a5..09183b5d 100644
--- a/src/SMAPI.Installer/InteractiveInstaller.cs
+++ b/src/SMAPI.Installer/InteractiveInstaller.cs
@@ -562,7 +562,7 @@ namespace StardewModdingApi.Installer
             {
                 try
                 {
-                    FileUtilities.ForceDelete(Directory.Exists(path) ? new DirectoryInfo(path) : (FileSystemInfo)new FileInfo(path));
+                    FileUtilities.ForceDelete(Directory.Exists(path) ? new DirectoryInfo(path) : new FileInfo(path));
                     break;
                 }
                 catch (Exception ex)
diff --git a/src/SMAPI.Internal/ExceptionHelper.cs b/src/SMAPI.Internal/ExceptionHelper.cs
index 03d48911..6bd1d579 100644
--- a/src/SMAPI.Internal/ExceptionHelper.cs
+++ b/src/SMAPI.Internal/ExceptionHelper.cs
@@ -25,7 +25,7 @@ namespace StardewModdingAPI.Internal
 
                     case ReflectionTypeLoadException ex:
                         string summary = ex.ToString();
-                        foreach (Exception childEx in ex.LoaderExceptions ?? Array.Empty<Exception>())
+                        foreach (Exception childEx in ex.LoaderExceptions)
                             summary += $"\n\n{childEx?.GetLogSummary()}";
                         message = summary;
                         break;
@@ -43,15 +43,6 @@ namespace StardewModdingAPI.Internal
             }
         }
 
-        /// <summary>Get the lowest exception in an exception stack.</summary>
-        /// <param name="exception">The exception from which to search.</param>
-        public static Exception GetInnermostException(this Exception exception)
-        {
-            while (exception.InnerException != null)
-                exception = exception.InnerException;
-            return exception;
-        }
-
         /// <summary>Simplify common patterns in exception log messages that don't convey useful info.</summary>
         /// <param name="message">The log message to simplify.</param>
         public static string SimplifyExtensionMessage(string message)
diff --git a/src/SMAPI.ModBuildConfig.Analyzer.Tests/Framework/DiagnosticVerifier.cs b/src/SMAPI.ModBuildConfig.Analyzer.Tests/Framework/DiagnosticVerifier.cs
index edaaabd4..49697dfa 100644
--- a/src/SMAPI.ModBuildConfig.Analyzer.Tests/Framework/DiagnosticVerifier.cs
+++ b/src/SMAPI.ModBuildConfig.Analyzer.Tests/Framework/DiagnosticVerifier.cs
@@ -201,7 +201,7 @@ namespace SMAPI.ModBuildConfig.Analyzer.Tests.Framework
             var builder = new StringBuilder();
             for (int i = 0; i < diagnostics.Length; ++i)
             {
-                builder.AppendLine("// " + diagnostics[i].ToString());
+                builder.AppendLine("// " + diagnostics[i]);
 
                 var analyzerType = analyzer.GetType();
                 var rules = analyzer.SupportedDiagnostics;
diff --git a/src/SMAPI.ModBuildConfig.Analyzer/NetFieldAnalyzer.cs b/src/SMAPI.ModBuildConfig.Analyzer/NetFieldAnalyzer.cs
index 8478dc54..553aae99 100644
--- a/src/SMAPI.ModBuildConfig.Analyzer/NetFieldAnalyzer.cs
+++ b/src/SMAPI.ModBuildConfig.Analyzer/NetFieldAnalyzer.cs
@@ -227,10 +227,7 @@ namespace StardewModdingAPI.ModBuildConfig.Analyzer
 
                 // warn: implicit conversion
                 if (this.IsInvalidConversion(memberType.Type, memberType.ConvertedType))
-                {
                     context.ReportDiagnostic(Diagnostic.Create(this.AvoidImplicitNetFieldCastRule, context.Node.GetLocation(), context.Node, memberType.Type.Name, memberType.ConvertedType));
-                    return;
-                }
             });
         }
 
diff --git a/src/SMAPI.ModBuildConfig.Analyzer/ObsoleteFieldAnalyzer.cs b/src/SMAPI.ModBuildConfig.Analyzer/ObsoleteFieldAnalyzer.cs
index 3184147a..ba089513 100644
--- a/src/SMAPI.ModBuildConfig.Analyzer/ObsoleteFieldAnalyzer.cs
+++ b/src/SMAPI.ModBuildConfig.Analyzer/ObsoleteFieldAnalyzer.cs
@@ -77,7 +77,7 @@ namespace StardewModdingAPI.ModBuildConfig.Analyzer
             try
             {
                 // get reference info
-                if (!AnalyzerUtilities.TryGetMemberInfo(context.Node, context.SemanticModel, out ITypeSymbol declaringType, out TypeInfo memberType, out string memberName))
+                if (!AnalyzerUtilities.TryGetMemberInfo(context.Node, context.SemanticModel, out ITypeSymbol declaringType, out _, out string memberName))
                     return;
 
                 // suggest replacement
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/ConsoleCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/ConsoleCommand.cs
index 01cab92e..44b7824e 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/ConsoleCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/ConsoleCommand.cs
@@ -100,7 +100,7 @@ namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands
             List<string[]> lines = new List<string[]>(rows.Length + 2)
             {
                 header,
-                header.Select((value, i) => "".PadRight(widths[i], '-')).ToArray()
+                header.Select((_, i) => "".PadRight(widths[i], '-')).ToArray()
             };
             lines.AddRange(rows);
 
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/ApplySaveFixCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/ApplySaveFixCommand.cs
index 957b0e75..b02ba4b1 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/ApplySaveFixCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/ApplySaveFixCommand.cs
@@ -1,10 +1,12 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using StardewValley;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Other
 {
     /// <summary>A command which runs one of the game's save migrations.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class ApplySaveFixCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/DebugCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/DebugCommand.cs
index 1955c14e..cf1dcbce 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/DebugCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/DebugCommand.cs
@@ -1,8 +1,10 @@
-using StardewValley;
+using System.Diagnostics.CodeAnalysis;
+using StardewValley;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Other
 {
     /// <summary>A command which sends a debug command to the game.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class DebugCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/RegenerateBundles.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/RegenerateBundles.cs
index 9beedb96..159d7c4a 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/RegenerateBundles.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/RegenerateBundles.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Reflection;
 using Netcode;
@@ -9,6 +10,7 @@ using StardewValley.Network;
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Other
 {
     /// <summary>A command which regenerates the game's bundles.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class RegenerateBundlesCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/ShowDataFilesCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/ShowDataFilesCommand.cs
index 27f6ce53..a233d588 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/ShowDataFilesCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/ShowDataFilesCommand.cs
@@ -1,8 +1,10 @@
-using System.Diagnostics;
+using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Other
 {
     /// <summary>A command which shows the data files.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class ShowDataFilesCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/ShowGameFilesCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/ShowGameFilesCommand.cs
index b97cb3e6..745b821b 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/ShowGameFilesCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/ShowGameFilesCommand.cs
@@ -1,8 +1,10 @@
 using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Other
 {
     /// <summary>A command which shows the game files.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class ShowGameFilesCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/TestInputCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/TestInputCommand.cs
index 46583dc3..8bf9f5db 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/TestInputCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Other/TestInputCommand.cs
@@ -1,8 +1,10 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Other
 {
     /// <summary>A command which logs the keys being pressed for 30 seconds once enabled.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class TestInputCommand : ConsoleCommand
     {
         /*********
@@ -37,9 +39,7 @@ namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Other
         public override void OnUpdated(IMonitor monitor)
         {
             // handle expiry
-            if (this.ExpiryTicks == null)
-                return;
-            if (this.ExpiryTicks <= DateTime.UtcNow.Ticks)
+            if (this.ExpiryTicks != null && this.ExpiryTicks <= DateTime.UtcNow.Ticks)
             {
                 monitor.Log("No longer logging input.", LogLevel.Info);
                 this.ExpiryTicks = null;
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/ListItemTypesCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/ListItemTypesCommand.cs
index af362bcd..ef35ad19 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/ListItemTypesCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/ListItemTypesCommand.cs
@@ -1,9 +1,11 @@
-using System.Linq;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
 using StardewModdingAPI.Mods.ConsoleCommands.Framework.ItemData;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Player
 {
     /// <summary>A command which list item types.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class ListItemTypesCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/ListItemsCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/ListItemsCommand.cs
index 46fc1d9d..5cc464fe 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/ListItemsCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/ListItemsCommand.cs
@@ -1,11 +1,13 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using StardewModdingAPI.Mods.ConsoleCommands.Framework.ItemData;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Player
 {
     /// <summary>A command which list items available to spawn.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class ListItemsCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetColorCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetColorCommand.cs
index 7b7cbf83..af7f2d18 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetColorCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetColorCommand.cs
@@ -1,9 +1,11 @@
+using System.Diagnostics.CodeAnalysis;
 using Microsoft.Xna.Framework;
 using StardewValley;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Player
 {
     /// <summary>A command which edits the color of a player feature.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class SetColorCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetFarmTypeCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetFarmTypeCommand.cs
index 6fb399ae..2809df9c 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetFarmTypeCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetFarmTypeCommand.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Reflection;
 using System.Text;
@@ -10,6 +11,7 @@ using StardewValley.GameData;
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Player
 {
     /// <summary>A command which changes the player's farm type.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class SetFarmTypeCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetHealthCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetHealthCommand.cs
index f27b336f..f169159f 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetHealthCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetHealthCommand.cs
@@ -1,9 +1,11 @@
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using StardewValley;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Player
 {
     /// <summary>A command which edits the player's current health.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class SetHealthCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetImmunityCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetImmunityCommand.cs
index df90adf2..1065bd21 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetImmunityCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetImmunityCommand.cs
@@ -1,9 +1,11 @@
-using System.Linq;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
 using StardewValley;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Player
 {
     /// <summary>A command which edits the player's current immunity.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class SetImmunityCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetMaxHealthCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetMaxHealthCommand.cs
index a5f7f444..c2c4931d 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetMaxHealthCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetMaxHealthCommand.cs
@@ -1,9 +1,11 @@
-using System.Linq;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
 using StardewValley;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Player
 {
     /// <summary>A command which edits the player's maximum health.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class SetMaxHealthCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetMaxStaminaCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetMaxStaminaCommand.cs
index e3c2f011..8c794e75 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetMaxStaminaCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetMaxStaminaCommand.cs
@@ -1,9 +1,11 @@
-using System.Linq;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
 using StardewValley;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Player
 {
     /// <summary>A command which edits the player's maximum stamina.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class SetMaxStaminaCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetMoneyCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetMoneyCommand.cs
index 787ce920..3afcc62b 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetMoneyCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetMoneyCommand.cs
@@ -1,9 +1,11 @@
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using StardewValley;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Player
 {
     /// <summary>A command which edits the player's current money.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class SetMoneyCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetNameCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetNameCommand.cs
index 4911ad1c..12d6b6e8 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetNameCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetNameCommand.cs
@@ -1,8 +1,10 @@
+using System.Diagnostics.CodeAnalysis;
 using StardewValley;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Player
 {
     /// <summary>A command which edits the player's name.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class SetNameCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetStaminaCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetStaminaCommand.cs
index c78378ef..24718ace 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetStaminaCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetStaminaCommand.cs
@@ -1,9 +1,11 @@
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using StardewValley;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Player
 {
     /// <summary>A command which edits the player's current stamina.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class SetStaminaCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetStyleCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetStyleCommand.cs
index 98f6c330..558c327d 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetStyleCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/Player/SetStyleCommand.cs
@@ -1,8 +1,10 @@
+using System.Diagnostics.CodeAnalysis;
 using StardewValley;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.Player
 {
     /// <summary>A command which edits a player style.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class SetStyleCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/ClearCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/ClearCommand.cs
index 7935b05f..eeb95553 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/ClearCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/ClearCommand.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using StardewValley;
 using StardewValley.Locations;
@@ -9,6 +10,7 @@ using SObject = StardewValley.Object;
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.World
 {
     /// <summary>A command which clears in-game objects.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class ClearCommand : ConsoleCommand
     {
         /*********
@@ -113,7 +115,7 @@ namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.World
 
                 case "furniture":
                     {
-                        int removed = this.RemoveFurniture(location, furniture => true);
+                        int removed = this.RemoveFurniture(location, _ => true);
                         monitor.Log($"Done! Removed {removed} entities from {location.Name}.", LogLevel.Info);
                         break;
                     }
@@ -137,11 +139,11 @@ namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.World
                     {
                         bool everything = type == "everything";
                         int removed =
-                            this.RemoveFurniture(location, p => true)
-                            + this.RemoveObjects(location, p => true)
-                            + this.RemoveTerrainFeatures(location, p => true)
+                            this.RemoveFurniture(location, _ => true)
+                            + this.RemoveObjects(location, _ => true)
+                            + this.RemoveTerrainFeatures(location, _ => true)
                             + this.RemoveLargeTerrainFeatures(location, p => everything || p is not Bush bush || bush.isDestroyable(location, p.currentTileLocation))
-                            + this.RemoveResourceClumps(location, p => true);
+                            + this.RemoveResourceClumps(location, _ => true);
                         monitor.Log($"Done! Removed {removed} entities from {location.Name}.", LogLevel.Info);
                         break;
                     }
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/DownMineLevelCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/DownMineLevelCommand.cs
index 0aa9c9c3..5b1a4a13 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/DownMineLevelCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/DownMineLevelCommand.cs
@@ -1,9 +1,11 @@
+using System.Diagnostics.CodeAnalysis;
 using StardewValley;
 using StardewValley.Locations;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.World
 {
     /// <summary>A command which moves the player to the next mine level.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class DownMineLevelCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/HurryAllCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/HurryAllCommand.cs
index 2deac5f8..09531720 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/HurryAllCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/HurryAllCommand.cs
@@ -1,9 +1,11 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using StardewValley;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.World
 {
     /// <summary>A command which immediately warps all NPCs to their scheduled positions. To hurry a single NPC, see <c>debug hurry npc-name</c> instead.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class HurryAllCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetDayCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetDayCommand.cs
index 4028b3dc..399fd934 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetDayCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetDayCommand.cs
@@ -1,10 +1,12 @@
-using System.Linq;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
 using StardewModdingAPI.Utilities;
 using StardewValley;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.World
 {
     /// <summary>A command which sets the current day.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class SetDayCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetMineLevelCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetMineLevelCommand.cs
index 40f4b19f..f977fce3 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetMineLevelCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetMineLevelCommand.cs
@@ -1,9 +1,11 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using StardewValley;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.World
 {
     /// <summary>A command which moves the player to the given mine level.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class SetMineLevelCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetSeasonCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetSeasonCommand.cs
index a4cb35bb..d839c037 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetSeasonCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetSeasonCommand.cs
@@ -1,3 +1,4 @@
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using StardewModdingAPI.Utilities;
 using StardewValley;
@@ -5,6 +6,7 @@ using StardewValley;
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.World
 {
     /// <summary>A command which sets the current season.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class SetSeasonCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetTimeCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetTimeCommand.cs
index 2d4b4565..8c4458dd 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetTimeCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetTimeCommand.cs
@@ -1,3 +1,4 @@
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using Microsoft.Xna.Framework;
 using StardewValley;
@@ -5,6 +6,7 @@ using StardewValley;
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.World
 {
     /// <summary>A command which sets the current time.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class SetTimeCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetYearCommand.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetYearCommand.cs
index 95401962..a666a634 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetYearCommand.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/Commands/World/SetYearCommand.cs
@@ -1,10 +1,12 @@
-using System.Linq;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
 using StardewModdingAPI.Utilities;
 using StardewValley;
 
 namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.Commands.World
 {
     /// <summary>A command which sets the current year.</summary>
+    [SuppressMessage("ReSharper", "UnusedMember.Global", Justification = "Loaded using reflection")]
     internal class SetYearCommand : ConsoleCommand
     {
         /*********
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/ItemData/SearchableItem.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/ItemData/SearchableItem.cs
index 72d01eb7..3675a963 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/ItemData/SearchableItem.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/ItemData/SearchableItem.cs
@@ -43,16 +43,6 @@ namespace StardewModdingAPI.Mods.ConsoleCommands.Framework.ItemData
             this.Item = createItem(this);
         }
 
-        /// <summary>Construct an instance.</summary>
-        /// <param name="item">The item metadata to copy.</param>
-        public SearchableItem(SearchableItem item)
-        {
-            this.Type = item.Type;
-            this.ID = item.ID;
-            this.CreateItem = item.CreateItem;
-            this.Item = item.Item;
-        }
-
         /// <summary>Get whether the item name contains a case-insensitive substring.</summary>
         /// <param name="substring">The substring to find.</param>
         public bool NameContains(string substring)
diff --git a/src/SMAPI.Mods.ConsoleCommands/Framework/ItemRepository.cs b/src/SMAPI.Mods.ConsoleCommands/Framework/ItemRepository.cs
index ca313f41..3915db9a 100644
--- a/src/SMAPI.Mods.ConsoleCommands/Framework/ItemRepository.cs
+++ b/src/SMAPI.Mods.ConsoleCommands/Framework/ItemRepository.cs
@@ -107,7 +107,7 @@ namespace StardewModdingAPI.Mods.ConsoleCommands.Framework
                     foreach (int id in this.TryLoad<int, string>("Data\\weapons").Keys)
                     {
                         yield return this.TryCreate(ItemType.Weapon, id, p => p.ID is >= 32 and <= 34
-                            ? (Item)new Slingshot(p.ID)
+                            ? new Slingshot(p.ID)
                             : new MeleeWeapon(p.ID)
                         );
                     }
diff --git a/src/SMAPI.Mods.ErrorHandler/Patches/SaveGamePatcher.cs b/src/SMAPI.Mods.ErrorHandler/Patches/SaveGamePatcher.cs
index 5f6dbcb3..01bfb888 100644
--- a/src/SMAPI.Mods.ErrorHandler/Patches/SaveGamePatcher.cs
+++ b/src/SMAPI.Mods.ErrorHandler/Patches/SaveGamePatcher.cs
@@ -77,7 +77,7 @@ namespace StardewModdingAPI.Mods.ErrorHandler.Patches
         private static Exception Finalize_LoadFarmType(Exception __exception)
         {
             // missing custom farm type
-            if (__exception?.Message?.Contains("not a valid farm type") == true && !int.TryParse(SaveGame.loaded.whichFarm, out _))
+            if (__exception?.Message.Contains("not a valid farm type") == true && !int.TryParse(SaveGame.loaded.whichFarm, out _))
             {
                 SaveGamePatcher.Monitor.Log(__exception.GetLogSummary(), LogLevel.Error);
                 SaveGamePatcher.Monitor.Log($"Removed invalid custom farm type '{SaveGame.loaded.whichFarm}' to avoid a crash when loading save '{Constants.SaveFolderName}'. (Did you remove a custom farm type mod?)", LogLevel.Warn);
diff --git a/src/SMAPI.Mods.SaveBackup/ModEntry.cs b/src/SMAPI.Mods.SaveBackup/ModEntry.cs
index f6925707..273b1434 100644
--- a/src/SMAPI.Mods.SaveBackup/ModEntry.cs
+++ b/src/SMAPI.Mods.SaveBackup/ModEntry.cs
@@ -44,7 +44,7 @@ namespace StardewModdingAPI.Mods.SaveBackup
                 // back up & prune saves
                 Task
                     .Run(() => this.CreateBackup(backupFolder))
-                    .ContinueWith(backupTask => this.PruneBackups(backupFolder, this.BackupsToKeep));
+                    .ContinueWith(_ => this.PruneBackups(backupFolder, this.BackupsToKeep));
             }
             catch (Exception ex)
             {
@@ -170,8 +170,8 @@ namespace StardewModdingAPI.Mods.SaveBackup
             try
             {
                 // create compressed backup
-                Assembly coreAssembly = Assembly.Load("System.IO.Compression, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089") ?? throw new InvalidOperationException("Can't load System.IO.Compression assembly.");
-                Assembly fsAssembly = Assembly.Load("System.IO.Compression.FileSystem, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089") ?? throw new InvalidOperationException("Can't load System.IO.Compression assembly.");
+                Assembly coreAssembly = Assembly.Load("System.IO.Compression, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089");
+                Assembly fsAssembly = Assembly.Load("System.IO.Compression.FileSystem, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089");
                 Type compressionLevelType = coreAssembly.GetType("System.IO.Compression.CompressionLevel") ?? throw new InvalidOperationException("Can't load CompressionLevel type.");
                 Type zipFileType = fsAssembly.GetType("System.IO.Compression.ZipFile") ?? throw new InvalidOperationException("Can't load ZipFile type.");
                 createFromDirectory = zipFileType.GetMethod("CreateFromDirectory", new[] { typeof(string), typeof(string), compressionLevelType, typeof(bool) }) ?? throw new InvalidOperationException("Can't load ZipFile.CreateFromDirectory method.");
diff --git a/src/SMAPI.Tests.ModApiConsumer/ApiConsumer.cs b/src/SMAPI.Tests.ModApiConsumer/ApiConsumer.cs
index 2c7f9952..ac7bd338 100644
--- a/src/SMAPI.Tests.ModApiConsumer/ApiConsumer.cs
+++ b/src/SMAPI.Tests.ModApiConsumer/ApiConsumer.cs
@@ -17,7 +17,7 @@ namespace SMAPI.Tests.ModApiConsumer
             // act
             int calls = 0;
             int lastValue = -1;
-            api.OnEventRaised += (sender, value) =>
+            api.OnEventRaised += (_, value) =>
             {
                 calls++;
                 lastValue = value;
@@ -34,7 +34,7 @@ namespace SMAPI.Tests.ModApiConsumer
             // act
             int calls = 0;
             int lastValue = -1;
-            api.OnEventRaisedProperty += (sender, value) =>
+            api.OnEventRaisedProperty += (_, value) =>
             {
                 calls++;
                 lastValue = value;
diff --git a/src/SMAPI.Tests/Core/AssetNameTests.cs b/src/SMAPI.Tests/Core/AssetNameTests.cs
index 8785aab8..7b817d13 100644
--- a/src/SMAPI.Tests/Core/AssetNameTests.cs
+++ b/src/SMAPI.Tests/Core/AssetNameTests.cs
@@ -33,7 +33,7 @@ namespace SMAPI.Tests.Core
 
             // act
             string calledWithLocale = null;
-            IAssetName assetName = AssetName.Parse(name, parseLocale: locale => expectedLanguageCode);
+            IAssetName assetName = AssetName.Parse(name, parseLocale: _ => expectedLanguageCode);
 
             // assert
             assetName.Name.Should()
@@ -161,7 +161,7 @@ namespace SMAPI.Tests.Core
             AssetName name = AssetName.Parse(mainAssetName, _ => null);
 
             // assert value is the same for any combination of options
-            bool result = name.StartsWith(prefix, true, true);
+            bool result = name.StartsWith(prefix);
             foreach (bool allowPartialWord in new[] { true, false })
             {
                 foreach (bool allowSubfolder in new[] { true, true })
diff --git a/src/SMAPI.Tests/Core/ModResolverTests.cs b/src/SMAPI.Tests/Core/ModResolverTests.cs
index 1755f644..86c50606 100644
--- a/src/SMAPI.Tests/Core/ModResolverTests.cs
+++ b/src/SMAPI.Tests/Core/ModResolverTests.cs
@@ -123,7 +123,7 @@ namespace SMAPI.Tests.Core
         [Test(Description = "Assert that validation doesn't fail if there are no mods installed.")]
         public void ValidateManifests_NoMods_DoesNothing()
         {
-            new ModResolver().ValidateManifests(Array.Empty<ModMetadata>(), apiVersion: new SemanticVersion("1.0"), getUpdateUrl: key => null);
+            new ModResolver().ValidateManifests(Array.Empty<ModMetadata>(), apiVersion: new SemanticVersion("1.0"), getUpdateUrl: _ => null);
         }
 
         [Test(Description = "Assert that validation skips manifests that have already failed without calling any other properties.")]
@@ -134,7 +134,7 @@ namespace SMAPI.Tests.Core
             mock.Setup(p => p.Status).Returns(ModMetadataStatus.Failed);
 
             // act
-            new ModResolver().ValidateManifests(new[] { mock.Object }, apiVersion: new SemanticVersion("1.0"), getUpdateUrl: key => null);
+            new ModResolver().ValidateManifests(new[] { mock.Object }, apiVersion: new SemanticVersion("1.0"), getUpdateUrl: _ => null);
 
             // assert
             mock.VerifyGet(p => p.Status, Times.Once, "The validation did not check the manifest status.");
@@ -151,7 +151,7 @@ namespace SMAPI.Tests.Core
             });
 
             // act
-            new ModResolver().ValidateManifests(new[] { mock.Object }, apiVersion: new SemanticVersion("1.0"), getUpdateUrl: key => null);
+            new ModResolver().ValidateManifests(new[] { mock.Object }, apiVersion: new SemanticVersion("1.0"), getUpdateUrl: _ => null);
 
             // assert
             mock.Verify(p => p.SetStatus(ModMetadataStatus.Failed, It.IsAny<ModFailReason>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once, "The validation did not fail the metadata.");
@@ -166,7 +166,7 @@ namespace SMAPI.Tests.Core
             this.SetupMetadataForValidation(mock);
 
             // act
-            new ModResolver().ValidateManifests(new[] { mock.Object }, apiVersion: new SemanticVersion("1.0"), getUpdateUrl: key => null);
+            new ModResolver().ValidateManifests(new[] { mock.Object }, apiVersion: new SemanticVersion("1.0"), getUpdateUrl: _ => null);
 
             // assert
             mock.Verify(p => p.SetStatus(ModMetadataStatus.Failed, It.IsAny<ModFailReason>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once, "The validation did not fail the metadata.");
@@ -180,7 +180,7 @@ namespace SMAPI.Tests.Core
             this.SetupMetadataForValidation(mock);
 
             // act
-            new ModResolver().ValidateManifests(new[] { mock.Object }, apiVersion: new SemanticVersion("1.0"), getUpdateUrl: key => null);
+            new ModResolver().ValidateManifests(new[] { mock.Object }, apiVersion: new SemanticVersion("1.0"), getUpdateUrl: _ => null);
 
             // assert
             mock.Verify(p => p.SetStatus(ModMetadataStatus.Failed, It.IsAny<ModFailReason>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once, "The validation did not fail the metadata.");
@@ -197,7 +197,7 @@ namespace SMAPI.Tests.Core
                 this.SetupMetadataForValidation(mod);
 
             // act
-            new ModResolver().ValidateManifests(new[] { modA.Object, modB.Object }, apiVersion: new SemanticVersion("1.0"), getUpdateUrl: key => null);
+            new ModResolver().ValidateManifests(new[] { modA.Object, modB.Object }, apiVersion: new SemanticVersion("1.0"), getUpdateUrl: _ => null);
 
             // assert
             modA.Verify(p => p.SetStatus(ModMetadataStatus.Failed, It.IsAny<ModFailReason>(), It.IsAny<string>(), It.IsAny<string>()), Times.Once, "The validation did not fail the first mod with a unique ID.");
@@ -223,7 +223,7 @@ namespace SMAPI.Tests.Core
             mock.Setup(p => p.DirectoryPath).Returns(modFolder);
 
             // act
-            new ModResolver().ValidateManifests(new[] { mock.Object }, apiVersion: new SemanticVersion("1.0"), getUpdateUrl: key => null);
+            new ModResolver().ValidateManifests(new[] { mock.Object }, apiVersion: new SemanticVersion("1.0"), getUpdateUrl: _ => null);
 
             // assert
             // if Moq doesn't throw a method-not-setup exception, the validation didn't override the status.
diff --git a/src/SMAPI.Tests/WikiClient/ChangeDescriptorTests.cs b/src/SMAPI.Tests/WikiClient/ChangeDescriptorTests.cs
index b896b09c..84cae8df 100644
--- a/src/SMAPI.Tests/WikiClient/ChangeDescriptorTests.cs
+++ b/src/SMAPI.Tests/WikiClient/ChangeDescriptorTests.cs
@@ -1,5 +1,4 @@
 using System.Collections.Generic;
-using System.Linq;
 using NUnit.Framework;
 using StardewModdingAPI;
 using StardewModdingAPI.Toolkit.Framework.Clients.Wiki;
diff --git a/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiClient.cs b/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiClient.cs
index abbcdc81..c936bb3e 100644
--- a/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiClient.cs
+++ b/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiClient.cs
@@ -65,7 +65,7 @@ namespace StardewModdingAPI.Toolkit.Framework.Clients.Wiki
 
                 foreach (var entry in this.ParseOverrideEntries(modNodes))
                 {
-                    if (entry.Ids?.Any() != true || !entry.HasChanges)
+                    if (entry.Ids.Any() != true || !entry.HasChanges)
                         continue;
 
                     foreach (string id in entry.Ids)
diff --git a/src/SMAPI.Toolkit/Framework/ModData/ModDatabase.cs b/src/SMAPI.Toolkit/Framework/ModData/ModDatabase.cs
index 5b7e2a02..9bb3f558 100644
--- a/src/SMAPI.Toolkit/Framework/ModData/ModDatabase.cs
+++ b/src/SMAPI.Toolkit/Framework/ModData/ModDatabase.cs
@@ -22,7 +22,7 @@ namespace StardewModdingAPI.Toolkit.Framework.ModData
         *********/
         /// <summary>Construct an empty instance.</summary>
         public ModDatabase()
-        : this(Array.Empty<ModDataRecord>(), key => null) { }
+        : this(Array.Empty<ModDataRecord>(), _ => null) { }
 
         /// <summary>Construct an instance.</summary>
         /// <param name="records">The underlying mod data records indexed by default display name.</param>
diff --git a/src/SMAPI.Web/Controllers/JsonValidatorController.cs b/src/SMAPI.Web/Controllers/JsonValidatorController.cs
index bcd4097a..985f91ae 100644
--- a/src/SMAPI.Web/Controllers/JsonValidatorController.cs
+++ b/src/SMAPI.Web/Controllers/JsonValidatorController.cs
@@ -161,7 +161,7 @@ namespace StardewModdingAPI.Web.Controllers
                 return this.View("Index", this.GetModel(result.ID, schemaName, isEditView: true).SetContent(input, null).SetUploadError(result.UploadError));
 
             // redirect to view
-            return this.Redirect(this.Url.PlainAction("Index", "JsonValidator", new { schemaName = schemaName, id = result.ID }));
+            return this.Redirect(this.Url.PlainAction("Index", "JsonValidator", new { schemaName, id = result.ID }));
         }
 
 
@@ -317,13 +317,10 @@ namespace StardewModdingAPI.Web.Controllers
         /// <param name="key">The case-insensitive field key.</param>
         private T GetExtensionField<T>(JSchema schema, string key)
         {
-            if (schema.ExtensionData != null)
+            foreach ((string curKey, JToken value) in schema.ExtensionData)
             {
-                foreach ((string curKey, JToken value) in schema.ExtensionData)
-                {
-                    if (curKey.Equals(key, StringComparison.OrdinalIgnoreCase))
-                        return value.ToObject<T>();
-                }
+                if (curKey.Equals(key, StringComparison.OrdinalIgnoreCase))
+                    return value.ToObject<T>();
             }
 
             return default;
diff --git a/src/SMAPI.Web/Framework/Caching/Mods/IModCacheRepository.cs b/src/SMAPI.Web/Framework/Caching/Mods/IModCacheRepository.cs
index 0d912c7b..a16e6b73 100644
--- a/src/SMAPI.Web/Framework/Caching/Mods/IModCacheRepository.cs
+++ b/src/SMAPI.Web/Framework/Caching/Mods/IModCacheRepository.cs
@@ -1,6 +1,5 @@
 using System;
 using StardewModdingAPI.Toolkit.Framework.UpdateData;
-using StardewModdingAPI.Web.Framework.Clients;
 
 namespace StardewModdingAPI.Web.Framework.Caching.Mods
 {
diff --git a/src/SMAPI.Web/Framework/Caching/Mods/ModCacheMemoryRepository.cs b/src/SMAPI.Web/Framework/Caching/Mods/ModCacheMemoryRepository.cs
index 9769793c..f871a9da 100644
--- a/src/SMAPI.Web/Framework/Caching/Mods/ModCacheMemoryRepository.cs
+++ b/src/SMAPI.Web/Framework/Caching/Mods/ModCacheMemoryRepository.cs
@@ -2,7 +2,6 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using StardewModdingAPI.Toolkit.Framework.UpdateData;
-using StardewModdingAPI.Web.Framework.Clients;
 
 namespace StardewModdingAPI.Web.Framework.Caching.Mods
 {
diff --git a/src/SMAPI.Web/Framework/LogParsing/LogParser.cs b/src/SMAPI.Web/Framework/LogParsing/LogParser.cs
index 6a3ea222..864caef1 100644
--- a/src/SMAPI.Web/Framework/LogParsing/LogParser.cs
+++ b/src/SMAPI.Web/Framework/LogParsing/LogParser.cs
@@ -211,7 +211,7 @@ namespace StardewModdingAPI.Web.Framework.LogParsing
                         {
                             Match match = this.ModPathPattern.Match(message.Text);
                             log.ModPath = match.Groups["path"].Value;
-                            int lastDelimiterPos = log.ModPath.LastIndexOfAny(new char[] { '/', '\\' });
+                            int lastDelimiterPos = log.ModPath.LastIndexOfAny(new[] { '/', '\\' });
                             log.GamePath = lastDelimiterPos >= 0
                                 ? log.ModPath.Substring(0, lastDelimiterPos)
                                 : log.ModPath;
diff --git a/src/SMAPI.Web/Framework/ModInfoModel.cs b/src/SMAPI.Web/Framework/ModInfoModel.cs
index 7845b8c5..86f70788 100644
--- a/src/SMAPI.Web/Framework/ModInfoModel.cs
+++ b/src/SMAPI.Web/Framework/ModInfoModel.cs
@@ -1,5 +1,3 @@
-using StardewModdingAPI.Web.Framework.Clients;
-
 namespace StardewModdingAPI.Web.Framework
 {
     /// <summary>Generic metadata about a mod.</summary>
diff --git a/src/SMAPI.Web/Framework/RedirectRules/RedirectHostsToUrlsRule.cs b/src/SMAPI.Web/Framework/RedirectRules/RedirectHostsToUrlsRule.cs
index d75ee791..d67b5156 100644
--- a/src/SMAPI.Web/Framework/RedirectRules/RedirectHostsToUrlsRule.cs
+++ b/src/SMAPI.Web/Framework/RedirectRules/RedirectHostsToUrlsRule.cs
@@ -37,8 +37,6 @@ namespace StardewModdingAPI.Web.Framework.RedirectRules
         {
             // get requested host
             string host = context.HttpContext.Request.Host.Host;
-            if (host == null)
-                return null;
 
             // get new host
             host = this.Map(host);
diff --git a/src/SMAPI.Web/Framework/RedirectRules/RedirectToHttpsRule.cs b/src/SMAPI.Web/Framework/RedirectRules/RedirectToHttpsRule.cs
index 2a503ae3..265a605f 100644
--- a/src/SMAPI.Web/Framework/RedirectRules/RedirectToHttpsRule.cs
+++ b/src/SMAPI.Web/Framework/RedirectRules/RedirectToHttpsRule.cs
@@ -22,7 +22,7 @@ namespace StardewModdingAPI.Web.Framework.RedirectRules
         /// <param name="except">Matches requests which should be ignored.</param>
         public RedirectToHttpsRule(Func<HttpRequest, bool> except = null)
         {
-            this.Except = except ?? (req => false);
+            this.Except = except ?? (_ => false);
             this.StatusCode = HttpStatusCode.RedirectKeepVerb;
         }
 
diff --git a/src/SMAPI.Web/Startup.cs b/src/SMAPI.Web/Startup.cs
index d8561172..6d9591ee 100644
--- a/src/SMAPI.Web/Startup.cs
+++ b/src/SMAPI.Web/Startup.cs
@@ -81,7 +81,7 @@ namespace StardewModdingAPI.Web
 
             // init Hangfire
             services
-                .AddHangfire((serv, config) =>
+                .AddHangfire((_, config) =>
                 {
                     config
                         .SetDataCompatibilityLevel(CompatibilityLevel.Version_170)
diff --git a/src/SMAPI.Web/Views/LogParser/Index.cshtml b/src/SMAPI.Web/Views/LogParser/Index.cshtml
index b54867b1..3ddc6303 100644
--- a/src/SMAPI.Web/Views/LogParser/Index.cshtml
+++ b/src/SMAPI.Web/Views/LogParser/Index.cshtml
@@ -40,8 +40,8 @@
             smapi.logParser({
                 logStarted: new Date(@this.ForJson(log?.Timestamp)),
                 showPopup: @this.ForJson(log == null),
-                showMods: @this.ForJson(log?.Mods?.Select(p => Model.GetSlug(p.Name)).Distinct().ToDictionary(slug => slug, slug => true)),
-                showSections: @this.ForJson(Enum.GetNames(typeof(LogSection)).ToDictionary(section => section, section => false)),
+                showMods: @this.ForJson(log?.Mods?.Select(p => Model.GetSlug(p.Name)).Distinct().ToDictionary(slug => slug, _ => true)),
+                showSections: @this.ForJson(Enum.GetNames(typeof(LogSection)).ToDictionary(section => section, _ => false)),
                 showLevels: @this.ForJson(defaultFilters),
                 enableFilters: @this.ForJson(!Model.ShowRaw),
                 screenIds: @this.ForJson(screenIds)
@@ -207,7 +207,7 @@ else if (log?.IsValid == true)
                                     @if (mod.HasUpdate)
                                     {
                                         <a href="@mod.UpdateLink" target="_blank">
-                                            @(mod.Version == null ? @mod.UpdateVersion : $"{mod.Version} → {mod.UpdateVersion}")
+                                            @(mod.Version == null ? mod.UpdateVersion : $"{mod.Version} → {mod.UpdateVersion}")
                                         </a>
                                     }
                                     else
diff --git a/src/SMAPI.Web/wwwroot/Content/css/file-upload.css b/src/SMAPI.Web/wwwroot/Content/css/file-upload.css
index ff170691..f29d46aa 100644
--- a/src/SMAPI.Web/wwwroot/Content/css/file-upload.css
+++ b/src/SMAPI.Web/wwwroot/Content/css/file-upload.css
@@ -11,7 +11,7 @@
     border-radius: 5px;
     border: 1px solid #000088;
     outline: none;
-    box-shadow: inset 0px 0px 1px 1px rgba(0, 0, 192, .2);
+    box-shadow: inset 0 0 1px 1px rgba(0, 0, 192, .2);
 }
 
 #submit {
diff --git a/src/SMAPI/Constants.cs b/src/SMAPI/Constants.cs
index 76f4ef87..6b9e9b05 100644
--- a/src/SMAPI/Constants.cs
+++ b/src/SMAPI/Constants.cs
@@ -170,9 +170,6 @@ namespace StardewModdingAPI
         /// <summary>The target game platform as a SMAPI toolkit constant.</summary>
         internal static Platform Platform { get; } = (Platform)Constants.TargetPlatform;
 
-        /// <summary>The language code for non-translated mod assets.</summary>
-        internal static LocalizedContentManager.LanguageCode DefaultLanguage { get; } = LocalizedContentManager.LanguageCode.en;
-
 
         /*********
         ** Internal methods
diff --git a/src/SMAPI/Framework/CommandManager.cs b/src/SMAPI/Framework/CommandManager.cs
index a7b64cb7..0c0f6685 100644
--- a/src/SMAPI/Framework/CommandManager.cs
+++ b/src/SMAPI/Framework/CommandManager.cs
@@ -65,7 +65,7 @@ namespace StardewModdingAPI.Framework
         /// <exception cref="ArgumentException">There's already a command with that name.</exception>
         public CommandManager Add(IInternalCommand command, IMonitor monitor)
         {
-            return this.Add(null, command.Name, command.Description, (name, args) => command.HandleCommand(args, monitor));
+            return this.Add(null, command.Name, command.Description, (_, args) => command.HandleCommand(args, monitor));
         }
 
         /// <summary>Get a command by its unique name.</summary>
diff --git a/src/SMAPI/Framework/Content/AssetDataForMap.cs b/src/SMAPI/Framework/Content/AssetDataForMap.cs
index 0458f80a..5986e797 100644
--- a/src/SMAPI/Framework/Content/AssetDataForMap.cs
+++ b/src/SMAPI/Framework/Content/AssetDataForMap.cs
@@ -147,7 +147,7 @@ namespace StardewModdingAPI.Framework.Content
         {
             switch (sourceTile)
             {
-                case StaticTile _:
+                case StaticTile:
                     return new StaticTile(targetLayer, targetSheet, sourceTile.BlendMode, sourceTile.TileIndex);
 
                 case AnimatedTile animatedTile:
diff --git a/src/SMAPI/Framework/Content/AssetName.cs b/src/SMAPI/Framework/Content/AssetName.cs
index a1d37b0b..4973b444 100644
--- a/src/SMAPI/Framework/Content/AssetName.cs
+++ b/src/SMAPI/Framework/Content/AssetName.cs
@@ -107,7 +107,7 @@ namespace StardewModdingAPI.Framework.Content
                 return this.BaseName.Equals(assetName?.BaseName, StringComparison.OrdinalIgnoreCase);
 
             if (assetName is AssetName impl)
-                return this.ComparableName == impl?.ComparableName;
+                return this.ComparableName == impl.ComparableName;
 
             return this.Name.Equals(assetName?.Name, StringComparison.OrdinalIgnoreCase);
         }
diff --git a/src/SMAPI/Framework/Content/TilesheetReference.cs b/src/SMAPI/Framework/Content/TilesheetReference.cs
index 0919bb44..0339b802 100644
--- a/src/SMAPI/Framework/Content/TilesheetReference.cs
+++ b/src/SMAPI/Framework/Content/TilesheetReference.cs
@@ -1,4 +1,3 @@
-using System.Numerics;
 using xTile.Dimensions;
 
 namespace StardewModdingAPI.Framework.Content
diff --git a/src/SMAPI/Framework/ContentManagers/BaseContentManager.cs b/src/SMAPI/Framework/ContentManagers/BaseContentManager.cs
index 31199b3a..c803905a 100644
--- a/src/SMAPI/Framework/ContentManagers/BaseContentManager.cs
+++ b/src/SMAPI/Framework/ContentManagers/BaseContentManager.cs
@@ -308,7 +308,7 @@ namespace StardewModdingAPI.Framework.ContentManagers
         {
             return useCache
                 ? base.LoadBase<T>(assetName.Name)
-                : base.ReadAsset<T>(assetName.Name, disposable => this.Disposables.Add(new WeakReference<IDisposable>(disposable)));
+                : this.ReadAsset<T>(assetName.Name, disposable => this.Disposables.Add(new WeakReference<IDisposable>(disposable)));
         }
 
         /// <summary>Add tracking data to an asset and add it to the cache.</summary>
diff --git a/src/SMAPI/Framework/ContentManagers/ModContentManager.cs b/src/SMAPI/Framework/ContentManagers/ModContentManager.cs
index 63070d85..e0c85265 100644
--- a/src/SMAPI/Framework/ContentManagers/ModContentManager.cs
+++ b/src/SMAPI/Framework/ContentManagers/ModContentManager.cs
@@ -124,7 +124,7 @@ namespace StardewModdingAPI.Framework.ContentManagers
             }
 
             // track & return asset
-            this.TrackAsset(assetName, asset, useCache);
+            this.TrackAsset(assetName, asset, useCache: false);
             return asset;
         }
 
diff --git a/src/SMAPI/Framework/Input/SInputState.cs b/src/SMAPI/Framework/Input/SInputState.cs
index d5feaf94..72adca02 100644
--- a/src/SMAPI/Framework/Input/SInputState.cs
+++ b/src/SMAPI/Framework/Input/SInputState.cs
@@ -73,7 +73,7 @@ namespace StardewModdingAPI.Framework.Input
                 var keyboard = new KeyboardStateBuilder(base.GetKeyboardState());
                 var mouse = new MouseStateBuilder(base.GetMouseState());
                 Vector2 cursorAbsolutePos = new((mouse.X * zoomMultiplier) + Game1.viewport.X, (mouse.Y * zoomMultiplier) + Game1.viewport.Y);
-                Vector2? playerTilePos = Context.IsPlayerFree ? Game1.player.getTileLocation() : (Vector2?)null;
+                Vector2? playerTilePos = Context.IsPlayerFree ? Game1.player.getTileLocation() : null;
                 HashSet<SButton> reallyDown = new HashSet<SButton>(this.GetPressedButtons(keyboard, mouse, controller));
 
                 // apply overrides
diff --git a/src/SMAPI/Framework/InternalExtensions.cs b/src/SMAPI/Framework/InternalExtensions.cs
index fe10b045..54aeffd7 100644
--- a/src/SMAPI/Framework/InternalExtensions.cs
+++ b/src/SMAPI/Framework/InternalExtensions.cs
@@ -1,7 +1,6 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Reflection;
 using System.Threading;
 using Microsoft.Xna.Framework.Graphics;
 using StardewModdingAPI.Framework.Events;
diff --git a/src/SMAPI/Framework/ModHelpers/ModRegistryHelper.cs b/src/SMAPI/Framework/ModHelpers/ModRegistryHelper.cs
index 95eb03f3..09a392a6 100644
--- a/src/SMAPI/Framework/ModHelpers/ModRegistryHelper.cs
+++ b/src/SMAPI/Framework/ModHelpers/ModRegistryHelper.cs
@@ -69,7 +69,7 @@ namespace StardewModdingAPI.Framework.ModHelpers
             // get raw API
             IModMetadata mod = this.Registry.Get(uniqueID);
             if (mod?.Api != null && this.AccessedModApis.Add(mod.Manifest.UniqueID))
-                this.Monitor.Log($"Accessed mod-provided API for {mod.DisplayName}.", LogLevel.Trace);
+                this.Monitor.Log($"Accessed mod-provided API for {mod.DisplayName}.");
             return mod?.Api;
         }
 
diff --git a/src/SMAPI/Framework/ModLoading/AssemblyLoader.cs b/src/SMAPI/Framework/ModLoading/AssemblyLoader.cs
index 4480f4e8..24214c96 100644
--- a/src/SMAPI/Framework/ModLoading/AssemblyLoader.cs
+++ b/src/SMAPI/Framework/ModLoading/AssemblyLoader.cs
@@ -138,7 +138,7 @@ namespace StardewModdingAPI.Framework.ModLoading
                 if (changed)
                 {
                     if (!oneAssembly)
-                        this.Monitor.Log($"      Loading {assembly.File.Name} (rewritten)...", LogLevel.Trace);
+                        this.Monitor.Log($"      Loading {assembly.File.Name} (rewritten)...");
 
                     // load assembly
                     using MemoryStream outAssemblyStream = new();
@@ -150,7 +150,7 @@ namespace StardewModdingAPI.Framework.ModLoading
                 else
                 {
                     if (!oneAssembly)
-                        this.Monitor.Log($"      Loading {assembly.File.Name}...", LogLevel.Trace);
+                        this.Monitor.Log($"      Loading {assembly.File.Name}...");
                     lastAssembly = Assembly.UnsafeLoadFrom(assembly.File.FullName);
                 }
 
diff --git a/src/SMAPI/Framework/ModLoading/ModResolver.cs b/src/SMAPI/Framework/ModLoading/ModResolver.cs
index 21366bb4..d52cdbb4 100644
--- a/src/SMAPI/Framework/ModLoading/ModResolver.cs
+++ b/src/SMAPI/Framework/ModLoading/ModResolver.cs
@@ -237,7 +237,7 @@ namespace StardewModdingAPI.Framework.ModLoading
             // initialize metadata
             mods = mods.ToArray();
             var sortedMods = new Stack<IModMetadata>();
-            var states = mods.ToDictionary(mod => mod, mod => ModDependencyStatus.Queued);
+            var states = mods.ToDictionary(mod => mod, _ => ModDependencyStatus.Queued);
 
             // handle failed mods
             foreach (IModMetadata mod in mods.Where(m => m.Status == ModMetadataStatus.Failed))
diff --git a/src/SMAPI/Framework/ModRegistry.cs b/src/SMAPI/Framework/ModRegistry.cs
index 99548cf8..c0f8d537 100644
--- a/src/SMAPI/Framework/ModRegistry.cs
+++ b/src/SMAPI/Framework/ModRegistry.cs
@@ -96,8 +96,6 @@ namespace StardewModdingAPI.Framework
             // get stack frames
             StackTrace stack = new();
             StackFrame[] frames = stack.GetFrames();
-            if (frames == null)
-                return null;
 
             // search stack for a source assembly
             foreach (StackFrame frame in frames)
diff --git a/src/SMAPI/Framework/Monitor.cs b/src/SMAPI/Framework/Monitor.cs
index ab76e7c0..6b53daff 100644
--- a/src/SMAPI/Framework/Monitor.cs
+++ b/src/SMAPI/Framework/Monitor.cs
@@ -92,7 +92,7 @@ namespace StardewModdingAPI.Framework
         public void VerboseLog(string message)
         {
             if (this.IsVerbose)
-                this.Log(message, LogLevel.Trace);
+                this.Log(message);
         }
 
         /// <summary>Write a newline to the console and log file.</summary>
diff --git a/src/SMAPI/Framework/SCore.cs b/src/SMAPI/Framework/SCore.cs
index c8e0842e..cc531de9 100644
--- a/src/SMAPI/Framework/SCore.cs
+++ b/src/SMAPI/Framework/SCore.cs
@@ -232,13 +232,13 @@ namespace StardewModdingAPI.Framework
                     this.Toolkit.JsonHelper.JsonSettings.Converters.Add(converter);
 
                 // add error handlers
-                AppDomain.CurrentDomain.UnhandledException += (sender, e) => this.Monitor.Log($"Critical app domain exception: {e.ExceptionObject}", LogLevel.Error);
+                AppDomain.CurrentDomain.UnhandledException += (_, e) => this.Monitor.Log($"Critical app domain exception: {e.ExceptionObject}", LogLevel.Error);
 
                 // add more lenient assembly resolver
-                AppDomain.CurrentDomain.AssemblyResolve += (sender, e) => AssemblyLoader.ResolveAssembly(e.Name);
+                AppDomain.CurrentDomain.AssemblyResolve += (_, e) => AssemblyLoader.ResolveAssembly(e.Name);
 
                 // hook locale event
-                LocalizedContentManager.OnLanguageChange += locale => this.OnLocaleChanged();
+                LocalizedContentManager.OnLanguageChange += _ => this.OnLocaleChanged();
 
                 // override game
                 this.Multiplayer = new SMultiplayer(this.Monitor, this.EventManager, this.Toolkit.JsonHelper, this.ModRegistry, this.Reflection, this.OnModMessageReceived, this.Settings.LogNetworkTraffic);
@@ -1453,14 +1453,12 @@ namespace StardewModdingAPI.Framework
                 // check Stardew64Installer version
                 if (Constants.IsPatchedByStardew64Installer(out ISemanticVersion patchedByVersion))
                 {
-                    ISemanticVersion updateFound = null;
-                    string updateUrl = null;
                     try
                     {
                         // fetch update check
                         ModEntryModel response = client.GetModInfo(new[] { new ModSearchEntryModel("Steviegt6.Stardew64Installer", patchedByVersion, new[] { $"GitHub:{this.Settings.Stardew64InstallerGitHubProjectName}" }) }, apiVersion: Constants.ApiVersion, gameVersion: Constants.GameVersion, platform: Constants.Platform).Single().Value;
-                        updateFound = response.SuggestedUpdate?.Version;
-                        updateUrl = response.SuggestedUpdate?.Url ?? Constants.HomePageUrl;
+                        ISemanticVersion updateFound = response.SuggestedUpdate?.Version;
+                        string updateUrl = response.SuggestedUpdate?.Url ?? Constants.HomePageUrl;
 
                         // log message
                         if (updateFound != null)
@@ -1658,8 +1656,8 @@ namespace StardewModdingAPI.Framework
                     // ReSharper restore SuspiciousTypeConversion.Global
 
                     ContentHelper content = helper.GetLegacyContentHelper();
-                    content.ObservableAssetEditors.CollectionChanged += (sender, e) => this.OnAssetInterceptorsChanged(metadata, e.NewItems?.Cast<IAssetEditor>(), e.OldItems?.Cast<IAssetEditor>(), this.ContentCore.Editors);
-                    content.ObservableAssetLoaders.CollectionChanged += (sender, e) => this.OnAssetInterceptorsChanged(metadata, e.NewItems?.Cast<IAssetLoader>(), e.OldItems?.Cast<IAssetLoader>(), this.ContentCore.Loaders);
+                    content.ObservableAssetEditors.CollectionChanged += (_, e) => this.OnAssetInterceptorsChanged(metadata, e.NewItems?.Cast<IAssetEditor>(), e.OldItems?.Cast<IAssetEditor>(), this.ContentCore.Editors);
+                    content.ObservableAssetLoaders.CollectionChanged += (_, e) => this.OnAssetInterceptorsChanged(metadata, e.NewItems?.Cast<IAssetLoader>(), e.OldItems?.Cast<IAssetLoader>(), this.ContentCore.Loaders);
                 }
 
                 // call entry method
diff --git a/src/SMAPI/Framework/SMultiplayer.cs b/src/SMAPI/Framework/SMultiplayer.cs
index 3981e4e5..bcf97006 100644
--- a/src/SMAPI/Framework/SMultiplayer.cs
+++ b/src/SMAPI/Framework/SMultiplayer.cs
@@ -111,20 +111,20 @@ namespace StardewModdingAPI.Framework
         {
             switch (client)
             {
-                case LidgrenClient _:
+                case LidgrenClient:
                     {
                         string address = this.Reflection.GetField<string>(client, "address").GetValue();
                         return new SLidgrenClient(address, this.OnClientProcessingMessage, this.OnClientSendingMessage);
                     }
 
-                case GalaxyNetClient _:
+                case GalaxyNetClient:
                     {
                         GalaxyID address = this.Reflection.GetField<GalaxyID>(client, "lobbyId").GetValue();
                         return new SGalaxyNetClient(address, this.OnClientProcessingMessage, this.OnClientSendingMessage);
                     }
 
                 default:
-                    this.Monitor.Log($"Unknown multiplayer client type: {client.GetType().AssemblyQualifiedName}", LogLevel.Trace);
+                    this.Monitor.Log($"Unknown multiplayer client type: {client.GetType().AssemblyQualifiedName}");
                     return client;
             }
         }
@@ -135,20 +135,20 @@ namespace StardewModdingAPI.Framework
         {
             switch (server)
             {
-                case LidgrenServer _:
+                case LidgrenServer:
                     {
                         IGameServer gameServer = this.Reflection.GetField<IGameServer>(server, "gameServer").GetValue();
                         return new SLidgrenServer(gameServer, this, this.OnServerProcessingMessage);
                     }
 
-                case GalaxyNetServer _:
+                case GalaxyNetServer:
                     {
                         IGameServer gameServer = this.Reflection.GetField<IGameServer>(server, "gameServer").GetValue();
                         return new SGalaxyNetServer(gameServer, this, this.OnServerProcessingMessage);
                     }
 
                 default:
-                    this.Monitor.Log($"Unknown multiplayer server type: {server.GetType().AssemblyQualifiedName}", LogLevel.Trace);
+                    this.Monitor.Log($"Unknown multiplayer server type: {server.GetType().AssemblyQualifiedName}");
                     return server;
             }
         }
@@ -160,7 +160,7 @@ namespace StardewModdingAPI.Framework
         protected void OnClientSendingMessage(OutgoingMessage message, Action<OutgoingMessage> sendMessage, Action resume)
         {
             if (this.LogNetworkTraffic)
-                this.Monitor.Log($"CLIENT SEND {(MessageType)message.MessageType} {message.FarmerID}", LogLevel.Trace);
+                this.Monitor.Log($"CLIENT SEND {(MessageType)message.MessageType} {message.FarmerID}");
 
             switch (message.MessageType)
             {
@@ -184,7 +184,7 @@ namespace StardewModdingAPI.Framework
         public void OnServerProcessingMessage(IncomingMessage message, Action<OutgoingMessage> sendMessage, Action resume)
         {
             if (this.LogNetworkTraffic)
-                this.Monitor.Log($"SERVER RECV {(MessageType)message.MessageType} {message.FarmerID}", LogLevel.Trace);
+                this.Monitor.Log($"SERVER RECV {(MessageType)message.MessageType} {message.FarmerID}");
 
             switch (message.MessageType)
             {
@@ -193,7 +193,7 @@ namespace StardewModdingAPI.Framework
                     {
                         // parse message
                         RemoteContextModel model = this.ReadContext(message.Reader);
-                        this.Monitor.Log($"Received context for farmhand {message.FarmerID} running {(model != null ? $"SMAPI {model.ApiVersion} with {model.Mods.Length} mods" : "vanilla")}.", LogLevel.Trace);
+                        this.Monitor.Log($"Received context for farmhand {message.FarmerID} running {(model != null ? $"SMAPI {model.ApiVersion} with {model.Mods.Length} mods" : "vanilla")}.");
 
                         // store peer
                         MultiplayerPeer newPeer = new(
@@ -243,7 +243,7 @@ namespace StardewModdingAPI.Framework
                     // store peer if new
                     if (!this.Peers.ContainsKey(message.FarmerID))
                     {
-                        this.Monitor.Log($"Received connection for vanilla player {message.FarmerID}.", LogLevel.Trace);
+                        this.Monitor.Log($"Received connection for vanilla player {message.FarmerID}.");
                         MultiplayerPeer peer = new(
                             playerID: message.FarmerID,
                             screenID: this.GetScreenId(message.FarmerID),
@@ -280,7 +280,7 @@ namespace StardewModdingAPI.Framework
         public void OnClientProcessingMessage(IncomingMessage message, Action<OutgoingMessage> sendMessage, Action resume)
         {
             if (this.LogNetworkTraffic)
-                this.Monitor.Log($"CLIENT RECV {(MessageType)message.MessageType} {message.FarmerID}", LogLevel.Trace);
+                this.Monitor.Log($"CLIENT RECV {(MessageType)message.MessageType} {message.FarmerID}");
 
             switch (message.MessageType)
             {
@@ -289,7 +289,7 @@ namespace StardewModdingAPI.Framework
                     {
                         // parse message
                         RemoteContextModel model = this.ReadContext(message.Reader);
-                        this.Monitor.Log($"Received context for {(model?.IsHost == true ? "host" : "farmhand")} {message.FarmerID} running {(model != null ? $"SMAPI {model.ApiVersion} with {model.Mods.Length} mods" : "vanilla")}.", LogLevel.Trace);
+                        this.Monitor.Log($"Received context for {(model?.IsHost == true ? "host" : "farmhand")} {message.FarmerID} running {(model != null ? $"SMAPI {model.ApiVersion} with {model.Mods.Length} mods" : "vanilla")}.");
 
                         // store peer
                         MultiplayerPeer peer = new(
@@ -314,7 +314,7 @@ namespace StardewModdingAPI.Framework
                         // store peer
                         if (!this.Peers.ContainsKey(message.FarmerID) && this.HostPeer == null)
                         {
-                            this.Monitor.Log($"Received connection for vanilla host {message.FarmerID}.", LogLevel.Trace);
+                            this.Monitor.Log($"Received connection for vanilla host {message.FarmerID}.");
                             var peer = new MultiplayerPeer(
                                 playerID: message.FarmerID,
                                 screenID: this.GetScreenId(message.FarmerID),
@@ -341,7 +341,7 @@ namespace StardewModdingAPI.Framework
                                 sendMessage: sendMessage,
                                 isHost: this.HostPeer == null
                             );
-                            this.Monitor.Log($"Received connection for vanilla {(peer.IsHost ? "host" : "farmhand")} {message.FarmerID}.", LogLevel.Trace);
+                            this.Monitor.Log($"Received connection for vanilla {(peer.IsHost ? "host" : "farmhand")} {message.FarmerID}.");
                             this.AddPeer(peer, canBeHost: true);
                         }
 
@@ -367,7 +367,7 @@ namespace StardewModdingAPI.Framework
             {
                 if (this.Peers.TryGetValue(playerID, out MultiplayerPeer peer))
                 {
-                    this.Monitor.Log($"Player quit: {playerID}", LogLevel.Trace);
+                    this.Monitor.Log($"Player quit: {playerID}");
                     this.Peers.Remove(playerID);
                     this.EventManager.PeerDisconnected.Raise(new PeerDisconnectedEventArgs(peer));
                 }
@@ -434,7 +434,7 @@ namespace StardewModdingAPI.Framework
             if (sendToSelf)
             {
                 if (this.LogNetworkTraffic)
-                    this.Monitor.Log($"Broadcasting '{messageType}' message to self: {data}.", LogLevel.Trace);
+                    this.Monitor.Log($"Broadcasting '{messageType}' message to self: {data}.");
 
                 this.OnModMessageReceived(model);
             }
@@ -447,7 +447,7 @@ namespace StardewModdingAPI.Framework
                     foreach (MultiplayerPeer peer in sendToPeers)
                     {
                         if (this.LogNetworkTraffic)
-                            this.Monitor.Log($"Broadcasting '{messageType}' message to farmhand {peer.PlayerID}: {data}.", LogLevel.Trace);
+                            this.Monitor.Log($"Broadcasting '{messageType}' message to farmhand {peer.PlayerID}: {data}.");
 
                         peer.SendMessage(new OutgoingMessage((byte)MessageType.ModMessage, peer.PlayerID, data));
                     }
@@ -455,7 +455,7 @@ namespace StardewModdingAPI.Framework
                 else if (this.HostPeer?.HasSmapi == true)
                 {
                     if (this.LogNetworkTraffic)
-                        this.Monitor.Log($"Broadcasting '{messageType}' message to host {this.HostPeer.PlayerID}: {data}.", LogLevel.Trace);
+                        this.Monitor.Log($"Broadcasting '{messageType}' message to host {this.HostPeer.PlayerID}: {data}.");
 
                     this.HostPeer.SendMessage(new OutgoingMessage((byte)MessageType.ModMessage, this.HostPeer.PlayerID, data));
                 }
@@ -504,7 +504,7 @@ namespace StardewModdingAPI.Framework
             ModMessageModel model = this.JsonHelper.Deserialize<ModMessageModel>(json);
             HashSet<long> playerIDs = new HashSet<long>(model.ToPlayerIDs ?? this.GetKnownPlayerIDs());
             if (this.LogNetworkTraffic)
-                this.Monitor.Log($"Received message: {json}.", LogLevel.Trace);
+                this.Monitor.Log($"Received message: {json}.");
 
             // notify local mods
             if (playerIDs.Contains(Game1.player.UniqueMultiplayerID))
diff --git a/src/SMAPI/Framework/Serialization/KeybindConverter.cs b/src/SMAPI/Framework/Serialization/KeybindConverter.cs
index 93a274a8..7c5db3ad 100644
--- a/src/SMAPI/Framework/Serialization/KeybindConverter.cs
+++ b/src/SMAPI/Framework/Serialization/KeybindConverter.cs
@@ -44,7 +44,7 @@ namespace StardewModdingAPI.Framework.Serialization
             {
                 case JsonToken.Null:
                     return objectType == typeof(Keybind)
-                        ? (object)new Keybind()
+                        ? new Keybind()
                         : new KeybindList();
 
                 case JsonToken.String:
diff --git a/src/SMAPI/Framework/StateTracking/Snapshots/PlayerSnapshot.cs b/src/SMAPI/Framework/StateTracking/Snapshots/PlayerSnapshot.cs
index f3e42948..e113d27c 100644
--- a/src/SMAPI/Framework/StateTracking/Snapshots/PlayerSnapshot.cs
+++ b/src/SMAPI/Framework/StateTracking/Snapshots/PlayerSnapshot.cs
@@ -31,7 +31,7 @@ namespace StardewModdingAPI.Framework.StateTracking.Snapshots
             Enum
                 .GetValues(typeof(SkillType))
                 .Cast<SkillType>()
-                .ToDictionary(skill => skill, skill => new SnapshotDiff<int>());
+                .ToDictionary(skill => skill, _ => new SnapshotDiff<int>());
 
         /// <summary>Get a list of inventory changes.</summary>
         public SnapshotItemListDiff Inventory { get; private set; }
diff --git a/src/SMAPI/Framework/TemporaryHacks/MiniMonoModHotfix.cs b/src/SMAPI/Framework/TemporaryHacks/MiniMonoModHotfix.cs
index cab1a94c..c0f119f1 100644
--- a/src/SMAPI/Framework/TemporaryHacks/MiniMonoModHotfix.cs
+++ b/src/SMAPI/Framework/TemporaryHacks/MiniMonoModHotfix.cs
@@ -126,7 +126,7 @@ namespace MonoMod.Utils
         }
 
         public static Type GetRealDeclaringType(this MemberInfo member)
-            => member.DeclaringType ?? member.Module?.GetModuleType();
+            => member.DeclaringType ?? member.Module.GetModuleType();
 
         public static void FixReflectionCache(this Type type)
         {
diff --git a/src/SMAPI/Program.cs b/src/SMAPI/Program.cs
index 29f4be1b..1039cc9a 100644
--- a/src/SMAPI/Program.cs
+++ b/src/SMAPI/Program.cs
@@ -78,7 +78,7 @@ namespace StardewModdingAPI
                         }
                         catch
                         {
-                            continue;
+                            // ignore invalid DLL
                         }
                     }
                 }
diff --git a/src/SMAPI/Translation.cs b/src/SMAPI/Translation.cs
index 149f6728..5ab432f0 100644
--- a/src/SMAPI/Translation.cs
+++ b/src/SMAPI/Translation.cs
@@ -74,7 +74,7 @@ namespace StardewModdingAPI
                 {
                     foreach (DictionaryEntry entry in inputLookup)
                     {
-                        string key = entry.Key?.ToString().Trim();
+                        string key = entry.Key.ToString()?.Trim();
                         if (key != null)
                             tokenLookup[key] = entry.Value?.ToString();
                     }
diff --git a/src/SMAPI/Utilities/PerScreen.cs b/src/SMAPI/Utilities/PerScreen.cs
index 20b8fbce..6b7153ac 100644
--- a/src/SMAPI/Utilities/PerScreen.cs
+++ b/src/SMAPI/Utilities/PerScreen.cs
@@ -76,7 +76,7 @@ namespace StardewModdingAPI.Utilities
         /// <summary>Remove all active values.</summary>
         public void ResetAllScreens()
         {
-            this.RemoveScreens(p => true);
+            this.RemoveScreens(_ => true);
         }