Failed to generate output: ArgumentNullException

[cn-ml]

I was interested in trying this tool, but after following the example in the usage instructions i get the following error message from the tool:

$ dotnet tsrts --project Backend.csproj --output generated
Start loading the csproj of C:\Users\...\Backend.csproj.
Create Compilation...
======== Exception ========
System.ArgumentNullException: Value cannot be null. (Parameter 'key')
   at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)
   at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
   at System.Linq.Enumerable.ToDictionary[TSource,TKey](IEnumerable`1 source, Func`2 keySelector, IEqualityComparer`1 comparer)
   at Tapper.DefaultTypeMapperProvider..ctor(Compilation compilation, Boolean includeReferencedAssemblies)
   at TypedSignalR.Client.TypeScript.App.TranspileCore(Compilation compilation, String outputDir, NewLineOption newLine, Int32 indent, Boolean referencedAssembliesTranspilation, SerializerOption serializerOption, NamingStyle namingStyle, EnumStyle enumStyle, MethodStyle methodStyle, Boolean enableAttributeReference) in /home/runner/work/TypedSignalR.Client.TypeScript/TypedSignalR.Client.TypeScript/src/TypedSignalR.Client.TypeScript.Generator/App.cs:line 97
   at TypedSignalR.Client.TypeScript.App.Transpile(String project, String output, NewLineOption newLine, Boolean assemblies, SerializerOption serializer, NamingStyle namingStyle, EnumStyle enum, MethodStyle method, Boolean attribute) in /home/runner/work/TypedSignalR.Client.TypeScript/TypedSignalR.Client.TypeScript/src/TypedSignalR.Client.TypeScript.Generator/App.cs:line 55

I installed all 3 packages to my project, added the [Hub] attribute to the interface on my example hub and the [Receiver] attribute to the client interface provided in Hub<IClient>.

Did i miss some important step?

[nenoNaninu]

That error message is displayed when the compilation fails to obtain information about the primitive type. So, it is probably an environmental issue (runtime/sdk version, project TFM, etc.)

Please try to generate the code correctly in this repository's ./tests/TypedSignalR.Client.TypeScript.Tests.Shared/TypedSignalR.Client.TypeScript.Tests.Shared.csproj.

Here is example.

dotnet tsrts --project ./tests/TypedSignalR.Client.TypeScript.Tests.Shared/TypedSignalR.Client.TypeScript.Tests.Shared.csproj --output ./out

Ref: https://github.com/nenoNaninu/TypedSignalR.Client.TypeScript/blob/v1.14.0/.github/workflows/build-and-test.yaml#L57-L61

[cn-ml]

Clean clone from the default branch, same issue unfortunately:

C:\Users\Michael\AppData\Local\Temp\TypedSignalR.Client.TypeScript>dotnet tsrts --project ./tests/TypedSignalR.Client.TypeScript.Tests.Shared/TypedSignalR.Client.TypeScript.Tests.Shared.csproj --output ./out
Start loading the csproj of C:\Users\Michael\AppData\Local\Temp\TypedSignalR.Client.TypeScript\tests\TypedSignalR.Client.TypeScript.Tests.Shared\TypedSignalR.Client.TypeScript.Tests.Shared.csproj.
Create Compilation...
======== Exception ========
System.ArgumentNullException: Value cannot be null. (Parameter 'key')
   at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)
   at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
   at System.Linq.Enumerable.ToDictionary[TSource,TKey](IEnumerable`1 source, Func`2 keySelector, IEqualityComparer`1 comparer)
   at Tapper.DefaultTypeMapperProvider..ctor(Compilation compilation, Boolean includeReferencedAssemblies)
   at TypedSignalR.Client.TypeScript.App.TranspileCore(Compilation compilation, String outputDir, NewLineOption newLine, Int32 indent, Boolean referencedAssembliesTranspilation, SerializerOption serializerOption, NamingStyle namingStyle, EnumStyle enumStyle, MethodStyle methodStyle, Boolean enableAttributeReference) in /home/runner/work/TypedSignalR.Client.TypeScript/TypedSignalR.Client.TypeScript/src/TypedSignalR.Client.TypeScript.Generator/App.cs:line 97
   at TypedSignalR.Client.TypeScript.App.Transpile(String project, String output, NewLineOption newLine, Boolean assemblies, SerializerOption serializer, NamingStyle namingStyle, EnumStyle enum, MethodStyle method, Boolean attribute) in /home/runner/work/TypedSignalR.Client.TypeScript/TypedSignalR.Client.TypeScript/src/TypedSignalR.Client.TypeScript.Generator/App.cs:line 55

[nenoNaninu]

What is your project's TFM and installed SDK version?
Regarding the SDK version, please let me know the result of the following command.

$ dotnet --list-sdks

[cn-ml]

$ dotnet --list-sdks

5.0.408 [C:\Program Files\dotnet\sdk]
6.0.423 [C:\Program Files\dotnet\sdk]
8.0.403 [C:\Program Files\dotnet\sdk]
9.0.100-preview.7.24407.12 [C:\Program Files\dotnet\sdk]
9.0.100-rc.1.24452.12 [C:\Program Files\dotnet\sdk]

My project currently targets: <TargetFramework>net8.0</TargetFramework>

[Belphemur]

I'm having the same type of issue or not having any client generated at all when using .NET 9.0 SDKs.

It seems the tools isn't compatible with that version of the SDK.

[jstaro]

I see the same with SDK 9.0.100 and TFM net9.0.

[jstaro]

I cloned the whole repo + Tapper and pulled all the projects into my solution as project references and changed all TFMs to net9.0, and then ran the generator towards my project via the debugger and it works.

So I'm pretty sure you just need to add a .NET 9 build target here.