Construct compiled to .NET throws "System.Exception: Cannot use import statement outside a module" when used

[hakenmt]

Describe the bug

An unhandled exception is thrown when using a .NET construct compiled using jsii. No idea what is causing this (exception is being thrown at var app = new App();. I don't import anything in the project that isn't from the CDK library except for path and fs. I've tried setting "type": "module" in my package.json, but it doesn't prevent this error from occurring. The stack trace doesn't really appear to be helpful in determining the cause.

Expected Behavior

Not to receive an exception.

Current Behavior

Unhandled exception. System.Exception: Cannot use import statement outside a module
at Amazon.JSII.Runtime.Services.Client.TryDeserialize[TResponse](String responseJson)
at Amazon.JSII.Runtime.Services.Client.ReceiveResponseTResponse
at Amazon.JSII.Runtime.Services.Client.Send[TRequest,TResponse](TRequest requestObject)
at Amazon.JSII.Runtime.Services.Client.Load(LoadRequest request)
at Amazon.JSII.Runtime.Services.Client.Load(String name, String version, String tarball)
at Amazon.JSII.Runtime.Services.Client.LoadPackage(String package, String version, String tarballPath)
at Amazon.JSII.Runtime.Deputy.JsiiTypeAttributeBase.Load(Assembly assembly)
at Amazon.JSII.Runtime.Deputy.JsiiTypeAttributeBase..ctor(Type nativeType, String fullyQualifiedName)
at Amazon.JSII.Runtime.Deputy.JsiiClassAttribute..ctor(Type nativeType, String fullyQualifiedName, String parametersJson)
at System.Reflection.CustomAttribute._CreateCaObject(RuntimeModule pModule, RuntimeType type, IRuntimeMethodInfo pCtor, Byte** ppBlob, Byte* pEndBlob, Int32* pcNamedArgs)
at System.Reflection.CustomAttribute.CreateCaObject(RuntimeModule module, RuntimeType type, IRuntimeMethodInfo ctor, IntPtr& blob, IntPtr blobEnd, Int32& namedArgs)
at System.Reflection.CustomAttribute.AddCustomAttributes(ListBuilder1& attributes, RuntimeModule decoratedModule, Int32 decoratedMetadataToken, RuntimeType attributeFilterType, Boolean mustBeInheritable, ListBuilder1 derivedAttributes)
at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeType type, RuntimeType caType, Boolean inherit)
at System.Attribute.GetCustomAttributes(MemberInfo element, Type attributeType, Boolean inherit)
at System.Reflection.CustomAttributeExtensions.GetCustomAttribute[T](MemberInfo element)
at Amazon.JSII.Runtime.Services.TypeCache.CacheTypes(Assembly assembly)
at Amazon.JSII.Runtime.Services.TypeCache.Refresh()
at Amazon.JSII.Runtime.Services.TypeCache.TryGetType[T](String fullyQualifiedName)
at Amazon.JSII.Runtime.Services.TypeCache.TryGetInterfaceType(String fullyQualifiedName)
at Amazon.JSII.Runtime.Services.Converters.ValueConverter.g__IsReferenceType|17_0(<>c__DisplayClass17_0&)
at Amazon.JSII.Runtime.Services.Converters.ValueConverter.TryConvertCustomType(Type type, IReferenceMap referenceMap, Object value, Boolean isOptional, String fullyQualifiedName, Object& result)
at Amazon.JSII.Runtime.Services.Converters.ValueConverter.TryConvert(IOptionalValue optionalValue, Type type, IReferenceMap referenceMap, Object value, Object& result)
at Amazon.JSII.Runtime.Services.Converters.FrameworkToJsiiConverter.TryConvert(IOptionalValue optionalValue, IReferenceMap referenceMap, Object value, Object& result)
at Amazon.JSII.Runtime.Deputy.DeputyBase.<>c__DisplayClass20_0.b__0(Parameter parameter, Object frameworkArgument)
at System.Linq.Enumerable.ZipIterator[TFirst,TSecond,TResult](IEnumerable1 first, IEnumerable1 second, Func3 resultSelector)+MoveNext() at System.Collections.Generic.LargeArrayBuilder1.AddRange(IEnumerable1 items) at System.Collections.Generic.EnumerableHelpers.ToArray[T](IEnumerable1 source)
at Amazon.JSII.Runtime.Deputy.DeputyBase.ConvertArguments(Parameter[] parameters, Object[] arguments)
at Amazon.JSII.Runtime.Deputy.DeputyBase..ctor(DeputyProps props)
at Constructs.Construct..ctor(DeputyProps props)
at Amazon.CDK.Stage..ctor(DeputyProps props)
at Amazon.CDK.App..ctor(IAppProps props)
at Program.Main(String[] args) in /Users/mhaken/source/workshop/cdk/Program.cs:line 16

Reproduction Steps

Add the nuget package and run var app = new App()

Possible Solution

No response

Additional Information/Context

No response

SDK version used

5.4.9 (build 91580f2)

Environment details (OS name and version, etc.)

darwin

[hakenmt]

Going to answer my own question in case this comes up in a search. I was exporting a bunch of classes and interfaces in my "main" file. In a few other .ts files i was importing from this main file, effectively making a circular import/export. Importing directly from the appropriate file containing the class fixed the problem.

[github-actions]

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