Added EditorConfig file.

.EditorConfig

@@ -0,0 +1,94 @@
+[*]
+# All files
+dotnet_style_qualification_for_field = false
+dotnet_style_qualification_for_property = false
+dotnet_style_qualification_for_method = false
+dotnet_style_qualification_for_event = false
+dotnet_diagnostic.IDE0003.severity = warning
+dotnet_style_predefined_type_for_locals_parameters_members = true
+dotnet_style_predefined_type_for_member_access = true
+dotnet_diagnostic.IDE0049.severity = suggestion
+csharp_preferred_modifier_order = public,private,protected,internal,file,static,extern,new,virtual,abstract,sealed,override,readonly,unsafe,required,volatile,async
+dotnet_diagnostic.IDE0036.severity = error
+dotnet_style_require_accessibility_modifiers = always
+dotnet_diagnostic.IDE0040.severity = warning
+dotnet_style_readonly_field = true
+dotnet_diagnostic.IDE0044.severity = error
+csharp_prefer_static_local_function = true
+dotnet_diagnostic.IDE0062.severity = warning
+dotnet_style_parentheses_in_arithmetic_binary_operators = always_for_clarity
+dotnet_diagnostic.IDE0047.severity = warning
+dotnet_diagnostic.IDE0048.severity = warning
+dotnet_diagnostic.IDE0010.severity = error
+dotnet_style_object_initializer = true
+dotnet_diagnostic.IDE0017.severity = suggestion
+csharp_style_inlined_variable_declaration = true
+dotnet_diagnostic.IDE0018.severity = suggestion
+dotnet_style_collection_initializer = true
+dotnet_diagnostic.IDE0028.severity = warning
+dotnet_style_prefer_auto_properties = true
+dotnet_diagnostic.IDE0032.severity = suggestion
+dotnet_style_explicit_tuple_names = true
+dotnet_diagnostic.IDE0033.severity = warning
+csharp_prefer_simple_default_expression = false
+dotnet_diagnostic.IDE0034.severity = warning
+dotnet_style_prefer_inferred_tuple_names = true
+dotnet_style_prefer_inferred_anonymous_type_member_names = true
+dotnet_diagnostic.IDE0037.severity = suggestion
+csharp_style_prefer_local_over_anonymous_function = true
+dotnet_diagnostic.IDE0039.severity = warning
+csharp_style_deconstructed_variable_declaration = true
+dotnet_diagnostic.IDE0042.severity = suggestion
+dotnet_style_prefer_conditional_expression_over_assignment = true
+dotnet_diagnostic.IDE0045.severity = warning
+dotnet_style_prefer_conditional_expression_over_return = true
+dotnet_diagnostic.IDE0046.severity = warning
+dotnet_style_prefer_compound_assignment = true
+dotnet_diagnostic.IDE0054.severity = warning
+dotnet_diagnostic.IDE0074.severity = warning
+csharp_style_prefer_index_operator = true
+dotnet_diagnostic.IDE0056.severity = warning
+csharp_style_prefer_range_operator = true
+dotnet_diagnostic.IDE0057.severity = warning
+dotnet_diagnostic.IDE0070.severity = error
+dotnet_style_prefer_simplified_interpolation = true
+dotnet_diagnostic.IDE0071.severity = warning
+dotnet_diagnostic.IDE0072.severity = error
+dotnet_style_prefer_simplified_boolean_expressions = true
+dotnet_diagnostic.IDE0075.severity = warning
+dotnet_diagnostic.IDE0082.severity = error
+csharp_style_implicit_object_creation_when_type_is_apparent = true
+dotnet_diagnostic.IDE0090.severity = error
+dotnet_diagnostic.IDE0180.severity = warning
+csharp_style_namespace_declarations = file_scoped
+dotnet_diagnostic.IDE0160.severity = error
+dotnet_diagnostic.IDE0161.severity = error
+csharp_style_throw_expression = true
+dotnet_diagnostic.IDE0016.severity = warning
+dotnet_style_coalesce_expression = true
+dotnet_diagnostic.IDE0029.severity = warning
+dotnet_diagnostic.IDE0030.severity = warning
+dotnet_style_null_propagation = true
+dotnet_diagnostic.IDE0031.severity = warning
+dotnet_style_prefer_is_null_check_over_reference_equality_method = true
+dotnet_diagnostic.IDE0041.severity = warning
+csharp_style_prefer_null_check_over_type_check = true
+dotnet_diagnostic.IDE0150.severity = warning
+csharp_style_conditional_delegate_call = false
+dotnet_diagnostic.IDE1005.severity = warning
+csharp_style_var_for_built_in_types = false
+csharp_style_var_when_type_is_apparent = true
+csharp_style_var_elsewhere = false
+dotnet_diagnostic.IDE0007.severity = warning
+dotnet_diagnostic.IDE0008.severity = warning
+dotnet_diagnostic.IDE0001.severity = error
+dotnet_diagnostic.IDE0002.severity = error
+dotnet_diagnostic.IDE0004.severity = error
+dotnet_diagnostic.IDE0005.severity = error
+dotnet_diagnostic.IDE0035.severity = warning
+dotnet_diagnostic.IDE0051.severity = warning
+dotnet_diagnostic.IDE0052.severity = warning
+csharp_style_unused_value_expression_statement_preference = discard_variable
+dotnet_diagnostic.IDE0058.severity = warning
+csharp_style_unused_value_assignment_preference = discard_variable
+dotnet_diagnostic.IDE0059.severity = warning

src/KristofferStrube.Blazor.WebIDL/IReadonlySetlike.cs

@@ -14,23 +14,23 @@ public static async Task<Iterator<Pair>> EntriesAsync<TSet>(this TSet set) where
     public static async Task ForEachAsync<TSet>(this TSet set, Func<Task> function) where TSet : IReadonlySetlike<TSet>
     {
         Callback callback = new(function);
-        using DotNetObjectReference<Callback> callbackObjRef = DotNetObjectReference.Create(callback);
+        using var callbackObjRef = DotNetObjectReference.Create(callback);
         IJSObjectReference helper = await set.JSRuntime.GetHelperAsync();
         await helper.InvokeVoidAsync("forEachWithNoArguments", set, callbackObjRef);
     }
 
     public static async Task ForEachAsync<TSet, T>(this TSet set, Func<T, Task> function) where TSet : IReadonlySetlike<TSet> where T : IJSCreatable<T>
     {
         Callback<T> callback = new(set.JSRuntime, function);
-        using DotNetObjectReference<Callback<T>> callbackObjRef = DotNetObjectReference.Create(callback);
+        using var callbackObjRef = DotNetObjectReference.Create(callback);
         IJSObjectReference helper = await set.JSRuntime.GetHelperAsync();
         await helper.InvokeVoidAsync("forEachWithOneArgument", set, callbackObjRef);
     }
 
     public static async Task ForEachAsync<TSet, T>(this TSet set, Func<T, T, Task> function) where TSet : IReadonlySetlike<TSet> where T : IJSCreatable<T>
     {
         Callback<T, T> callback = new(set.JSRuntime, function);
-        using DotNetObjectReference<Callback<T, T>> callbackObjRef = DotNetObjectReference.Create(callback);
+        using var callbackObjRef = DotNetObjectReference.Create(callback);
         IJSObjectReference helper = await set.JSRuntime.GetHelperAsync();
         await helper.InvokeVoidAsync("forEachWithTwoArguments", set, callbackObjRef);
     }
@@ -67,15 +67,15 @@ public static class IReadonlySetlikeStructExtensions
     public static async Task ForEachAsync<TSet, T>(this TSet set, Func<T, Task> function) where TSet : IReadonlySetlike<TSet> where T : struct
     {
         StructCallback<T> callback = new(function);
-        using DotNetObjectReference<StructCallback<T>> callbackObjRef = DotNetObjectReference.Create(callback);
+        using var callbackObjRef = DotNetObjectReference.Create(callback);
         IJSObjectReference helper = await set.JSRuntime.GetHelperAsync();
         await helper.InvokeVoidAsync("forEachWithOneStructArgument", set, callbackObjRef);
     }
 
     public static async Task ForEachAsync<TSet, T>(this TSet set, Func<T, T, Task> function) where TSet : IReadonlySetlike<TSet> where T : struct
     {
         StructCallback<T, T> callback = new(function);
-        using DotNetObjectReference<StructCallback<T, T>> callbackObjRef = DotNetObjectReference.Create(callback);
+        using var callbackObjRef = DotNetObjectReference.Create(callback);
         IJSObjectReference helper = await set.JSRuntime.GetHelperAsync();
         await helper.InvokeVoidAsync("forEachWithTwoStructArguments", set, callbackObjRef);
     }