resolve some warnings

Author: yueyinqiu

Magic.IndexedDb/Extensions/MagicJsInvoke.cs

@@ -142,7 +142,9 @@ internal async Task CallInvokeVoidDefaultJsAsync(string modulePath, string funct
         }
 
         private async IAsyncEnumerable<T?> MagicYieldJsAsync<T>(
-    string modulePath, string functionName, CancellationToken token, params ITypedArgument[] args)
+            string modulePath, string functionName, 
+            [EnumeratorCancellation] CancellationToken token, 
+            params ITypedArgument[] args)
         {
             var settings = new MagicJsonSerializationSettings() { UseCamelCase = true };
 

Magic.IndexedDb/Helpers/ExpressionFlattener.cs

@@ -200,11 +200,11 @@ private class LogicalExpressionComparer : IEqualityComparer<Expression>, ICompar
         {
             public static readonly LogicalExpressionComparer Instance = new();
 
-            public bool Equals(Expression x, Expression y) => Compare(x, y) == 0;
+            public bool Equals(Expression? x, Expression? y) => Compare(x, y) is 0;
 
             public int GetHashCode(Expression obj) => obj.ToString().GetHashCode();
 
-            public int Compare(Expression x, Expression y)
+            public int Compare(Expression? x, Expression? y)
             {
                 if (ReferenceEquals(x, y)) return 0;
                 if (x is null) return -1;

Magic.IndexedDb/LinqTranslation/Interfaces/IMagicExecute.cs

@@ -18,7 +18,7 @@ public interface IMagicExecute<T> where T : class
         /// </summary>
         /// <param name="cancellationToken"></param>
         /// <returns></returns>
-        IAsyncEnumerable<T> AsAsyncEnumerable([EnumeratorCancellation] CancellationToken cancellationToken = default);
+        IAsyncEnumerable<T> AsAsyncEnumerable(CancellationToken cancellationToken = default);
 
         /// <summary>
         /// The order you apply does get applied correctly in the query, 

Magic.IndexedDb/Models/MagicContractResolver.cs

@@ -159,9 +159,9 @@ private bool IsSimpleJsonNull(JsonElement element)
                         object? value = ReadPropertyValue(ref reader, mpe, options);
                         propertyValues[csharpPropertyName] = value;
                     }
-                    catch (Exception ex)
+                    catch
                     {
-
+                        // do nothing
                     }
                 }
                 else
@@ -324,9 +324,9 @@ private bool SerializeSimple(Utf8JsonWriter writer, object value)
         /// <summary>
         /// 🔥 Serializes lists (IEnumerable)
         /// </summary>
-        private bool SerializeIEnumerable(Utf8JsonWriter writer, object value, JsonSerializerOptions options)
+        private bool SerializeIEnumerable(Utf8JsonWriter writer, object? value, JsonSerializerOptions options)
         {
-            if (value == null)
+            if (value is null)
             {
                 writer.WriteNullValue();
                 return true;