After upgrading Kotlin from 1 9 20 to 2 0 0 Beta1 my wasmJs

Question

After upgrading Kotlin from 1 9 20 to 2 0 0 Beta1 my wasmJs target doesn t compile with a `CompilationException`

Robert Jaros · Answer

```e org jetbrains kotlin backend common CompilationException Back end Please report this problem <https kotl in issue> home rjaros git kilua kilua src commonMain kotlin dev kilua form Input kt 38 1 Problem with ` StabilityInferred parameters = 0 abstract class Input lt T Any gt Tag lt HTMLInputElement gt GenericFormControl lt T gt WithStateFlow lt T gt constructor value T = null type InputType = InputType Text name String = null maxlength Int = null placeholder String = null disabled Boolean = null required Boolean = null id String = null className String = null renderConfig RenderConfig = DefaultRenderConfig withStateFlowDelegate WithStateFlowDelegate lt T gt = WithStateFlowDelegateImpl lt T gt primary ```

Robert Jaros · Answer

There is a lot of code from my `Input kt` class after that

Robert Jaros · Answer

And in the end ```Details Internal error in body lowering java util NoSuchElementException Sequence contains no element matching the predicate at org jetbrains kotlin backend common lower SingleAbstractMethodLowering createObjectProxy SingleAbstractMethodLowering kt 391 at org jetbrains kotlin backend common lower SingleAbstractMethodLowering visitTypeOperator SingleAbstractMethodLowering kt 123 at org jetbrains kotlin ir visitors IrElementTransformerVoid visitTypeOperator IrElementTransformerVoid kt 261 at org jetbrains kotlin ir visitors IrElementTransformerVoid visitTypeOperator IrElementTransformerVoid kt 24 at org jetbrains kotlin ir expressions IrTypeOperatorCall accept IrTypeOperatorCall kt 28 at org jetbrains kotlin ir expressions IrExpression transform IrExpression kt 31 at org jetbrains kotlin ir expressions IrExpression transform IrExpression kt 22 at org jetbrains kotlin ir util TransformKt transformInPlace transform kt 35 at org jetbrains kotlin ir expressions IrVararg transformChildren IrVararg kt 34 at org jetbrains kotlin ir visitors IrElementTransformerVoid visitExpression IrElementTransformerVoid kt 131 at org jetbrains kotlin ir visitors IrElementTransformerVoid visitVararg IrElementTransformerVoid kt 156 at org jetbrains kotlin ir visitors IrElementTransformerVoid visitVararg IrElementTransformerVoid kt 157 at org jetbrains kotlin ir visitors IrElementTransformerVoid visitVararg IrElementTransformerVoid kt 24 at org jetbrains kotlin ir expressions IrVararg accept IrVararg kt 27 at org jetbrains kotlin ir expressions IrExpression transform IrExpression kt 31 at org jetbrains kotlin ir expressions IrExpression transform IrExpression kt 22 at org jetbrains kotlin ir util TransformKt transformInPlace transform kt 45 at org jetbrains kotlin ir expressions IrMemberAccessExpression transformChildren IrMemberAccessExpression kt 50 at org jetbrains kotlin ir visitors IrElementTransformerVoid visitExpression IrElementTransformerVoid kt 131 at org jetbrains kotlin ir visitors IrElementTransformerVoid visitDeclarationReference IrElementTransformerVoid kt 178 at org jetbrains kotlin ir visitors IrElementTransformerVoid visitMemberAccess IrElementTransformerVoid kt 208 at org jetbrains kotlin ir visitors IrElementTransformerVoid visitFunctionAccess IrElementTransformerVoid kt 211 at org jetbrains kotlin ir visitors IrElementTransformerVoid visitCall IrElementTransformerVoid kt 214 at org jetbrains kotlin ir visitors IrElementTransformerVoid visitCall IrElementTransformerVoid kt 215 at org jetbrains kotlin ir visitors IrElementTransformerVoid visitCall IrElementTransformerVoid kt 24 at org jetbrains kotlin ir expressions IrCall accept IrCall kt 26 at org jetbrains kotlin ir expressions IrExpression transform IrExpression kt 31 at org jetbrains kotlin ir expressions IrExpression transform IrExpression kt 22 at org jetbrains kotlin ir util TransformKt transformInPlace transform kt 35 at org jetbrains kotlin ir expressions IrBlockBody transformChildren IrBlockBody kt 32 at org jetbrains kotlin ir visitors IrElementTransformerVoidKt transformChildrenVoid IrElementTransformerVoid kt 346 at org jetbrains kotlin ir visitors IrElementTransformerVoid transformChildrenVoid IrElementTransformerVoid kt 341 at org jetbrains kotlin ir backend js lower JsSingleAbstractMethodLowering lower JsSingleAbstractMethodLowering kt 44 at org jetbrains kotlin backend common BodyLoweringVisitor$visitBody$1 invoke Lower kt 193 at org jetbrains kotlin backend common BodyLoweringVisitor$visitBody$1 invoke Lower kt 192 at org jetbrains kotlin ir declarations StageController restrictTo PersistentApi kt 11 at org jetbrains kotlin backend common BodyLoweringVisitor visitBody Lower kt 192 at org jetbrains kotlin backend common BodyLoweringVisitor visitBody Lower kt 171 at org jetbrains kotlin ir visitors IrElementVisitor$DefaultImpls visitBlockBody IrElementVisitor kt 92 at org jetbrains kotlin backend common BodyLoweringVisitor visitBlockBody Lower kt 171 at org jetbrains kotlin backend common BodyLoweringVisitor visitBlockBody Lower kt 171 at org jetbrains kotlin ir expressions IrBlockBody accept IrBlockBody kt 25 at org jetbrains kotlin ir declarations IrFunction acceptChildren IrFunction kt 54 at org jetbrains kotlin backend common BodyLoweringVisitor visitDeclaration Lower kt 180 at org jetbrains kotlin backend common BodyLoweringVisitor visitDeclaration Lower kt 171 at org jetbrains kotlin ir visitors IrElementVisitor$DefaultImpls visitFunction IrElementVisitor kt 38 at org jetbrains kotlin backend common BodyLoweringVisitor visitFunction Lower kt 171 at org jetbrains kotlin backend common BodyLoweringVisitor visitFunction Lower kt 171 at org jetbrains kotlin ir visitors IrElementVisitor$DefaultImpls visitSimpleFunction IrElementVisitor kt 65 at org jetbrains kotlin backend common BodyLoweringVisitor visitSimpleFunction Lower kt 171 at org jetbrains kotlin backend common BodyLoweringVisitor visitSimpleFunction Lower kt 171 at org jetbrains kotlin ir declarations IrSimpleFunction accept IrSimpleFunction kt 37 at org jetbrains kotlin backend common BodyLoweringVisitor visitClass Lower kt 186 at org jetbrains kotlin backend common BodyLoweringVisitor visitClass Lower kt 171 at org jetbrains kotlin ir declarations IrClass accept IrClass kt 84 at org jetbrains kotlin backend common LowerKt runOnFilePostfix Lower kt 150 at org jetbrains kotlin backend common LowerKt runOnFilePostfix$default Lower kt 143 at org jetbrains kotlin backend common BodyLoweringPass lower Lower kt 63 at org jetbrains kotlin ir backend js lower JsSingleAbstractMethodLowering lower JsSingleAbstractMethodLowering kt 35 at org jetbrains kotlin backend common LowerKt lower Lower kt 76 at org jetbrains kotlin backend wasm WasmLoweringPhasesKt$makeWasmModulePhase$1 invoke WasmLoweringPhases kt 38 at org jetbrains kotlin backend wasm WasmLoweringPhasesKt$makeWasmModulePhase$1 invoke WasmLoweringPhases kt 37 at org jetbrains kotlin backend wasm WasmLoweringPhasesKt$makeCustomWasmModulePhase$1 invoke WasmLoweringPhases kt 62 at org jetbrains kotlin backend wasm WasmLoweringPhasesKt$makeCustomWasmModulePhase$1 invoke WasmLoweringPhases kt 54 at org jetbrains kotlin backend common phaser NamedCompilerPhase phaseBody CompilerPhase kt 147 at org jetbrains kotlin backend common phaser AbstractNamedCompilerPhase invoke CompilerPhase kt 94 at org jetbrains kotlin backend common phaser CompositePhase invoke PhaseBuilders kt 30 at org jetbrains kotlin backend common phaser CompositePhase invoke PhaseBuilders kt 17 at org jetbrains kotlin backend common phaser NamedCompilerPhase phaseBody CompilerPhase kt 147 at org jetbrains kotlin backend common phaser AbstractNamedCompilerPhase invoke CompilerPhase kt 94 at org jetbrains kotlin backend common phaser CompilerPhaseKt invokeToplevel CompilerPhase kt 43 at org jetbrains kotlin backend wasm CompilerKt compileToLoweredIr compiler kt 86 at org jetbrains kotlin cli js K2JsIrCompiler doExecute K2JsIrCompiler kt 352 at org jetbrains kotlin cli js K2JSCompiler doExecute K2JSCompiler java 181 at org jetbrains kotlin cli js K2JSCompiler doExecute K2JSCompiler java 72 at org jetbrains kotlin cli common CLICompiler execImpl CLICompiler kt 104 at org jetbrains kotlin cli common CLICompiler execImpl CLICompiler kt 48 at org jetbrains kotlin cli common CLITool exec CLITool kt 101 at org jetbrains kotlin daemon CompileServiceImpl compile CompileServiceImpl kt 1508 at jdk internal reflect GeneratedMethodAccessor22 invoke Unknown Source at java base jdk internal reflect DelegatingMethodAccessorImpl invoke DelegatingMethodAccessorImpl java 43 at java base java lang reflect Method invoke Method java 568 at java rmi sun rmi server UnicastServerRef dispatch UnicastServerRef java 360 at java rmi sun rmi transport Transport$1 run Transport java 200 at java rmi sun rmi transport Transport$1 run Transport java 197 at java base java security AccessController doPrivileged AccessController java 712 at java rmi sun rmi transport Transport serviceCall Transport java 196 at java rmi sun rmi transport tcp TCPTransport handleMessages TCPTransport java 587 at java rmi sun rmi transport tcp TCPTransport$ConnectionHandler run0 TCPTransport java 828 at java rmi sun rmi transport tcp TCPTransport$ConnectionHandler lambda$run$0 TCPTransport java 705 at java base java security AccessController doPrivileged AccessController java 399 at java rmi sun rmi transport tcp TCPTransport$ConnectionHandler run TCPTransport java 704 at java base java util concurrent ThreadPoolExecutor runWorker ThreadPoolExecutor java 1136 at java base java util concurrent ThreadPoolExecutor$Worker run ThreadPoolExecutor java 635 at java base java lang Thread run Thread java 833 Caused by java util NoSuchElementException Sequence contains no element matching the predicate 95 more```

Robert Jaros · Answer

The JS target gives me lot s of new warnings but compiles successfully

Robert Jaros · Answer

Another error ```e org jetbrains kotlin backend common CompilationException Back end Please report this problem <https kotl in issue> home rjaros git kilua kilua src commonMain kotlin dev kilua form Form kt 110 1 Problem with ` Suppress names = TooManyFunctions StabilityInferred parameters = 0 open class Form lt K Any gt Tag lt HTMLFormElement gt WithStateFlow lt K gt constructor method FormMethod = null action String = null enctype FormEnctype = null serializer KSerializer lt K gt = null customSerializers Map lt KClass lt gt KSerializer lt gt gt = null className String = null renderConfig RenderConfig = DefaultRenderConfig primary super Tag lt HTMLFormElement gt tagName = form className = className renderConfig = renderConfig lt init gt ```

Robert Jaros · Answer

These are the classes which don t compile

bashor · Answer

< Robert Jaros> please file an issue

Robert Jaros · Answer