Hey Team, after updating from ktor 3.0-beta-2 to 3...

# ktor

[ar-g]

Hey Team, after updating from ktor 3.0-beta-2 to 3.0-rc-1 for multimodule kmp project we now having an issue with jsBrowserTest :

e: java.lang.AssertionError: Assertion failed
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.checkOnNullability(jsAstUtils.kt:451)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCallArguments(jsAstUtils.kt:422)

More details in the thread.

[ar-g]

These are main dependecies:

kotlin = "2.0.0"
coroutines = "1.8.1"
ktor = "3.0.0-beta-2"
kotlinx-serialization = "1.6.2"
kotlinx-datetime = "0.4.1"
okio = "3.7.0"
bignum = "0.3.9"
apollo-graphql = "4.0.0"
skie = "0.8.3"

Tried bumping some of them with ktor but doesn't help with the issue.

[ar-g]

e: java.lang.AssertionError: Assertion failed
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.checkOnNullability(jsAstUtils.kt:451)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCallArguments(jsAstUtils.kt:422)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCallArguments$default(jsAstUtils.kt:406)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCall(jsAstUtils.kt:179)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsExpressionTransformer.visitCall(IrElementToJsExpressionTransformer.kt:238)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsExpressionTransformer.visitCall(IrElementToJsExpressionTransformer.kt:26)
	at org.jetbrains.kotlin.ir.expressions.IrCall.accept(IrCall.kt:24)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCallArguments(jsAstUtils.kt:427)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCallArguments$default(jsAstUtils.kt:406)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCall(jsAstUtils.kt:179)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsExpressionTransformer.visitCall(IrElementToJsExpressionTransformer.kt:238)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsExpressionTransformer.visitCall(IrElementToJsExpressionTransformer.kt:26)
	at org.jetbrains.kotlin.ir.expressions.IrCall.accept(IrCall.kt:24)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCallArguments(jsAstUtils.kt:427)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCallArguments$default(jsAstUtils.kt:406)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCall(jsAstUtils.kt:179)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsExpressionTransformer.visitCall(IrElementToJsExpressionTransformer.kt:238)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsExpressionTransformer.visitCall(IrElementToJsExpressionTransformer.kt:26)
	at org.jetbrains.kotlin.ir.expressions.IrCall.accept(IrCall.kt:24)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsExpressionTransformer.visitVararg(IrElementToJsExpressionTransformer.kt:52)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsExpressionTransformer.visitVararg(IrElementToJsExpressionTransformer.kt:26)
	at org.jetbrains.kotlin.ir.expressions.IrVararg.accept(IrVararg.kt:25)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCallArguments(jsAstUtils.kt:427)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCallArguments$default(jsAstUtils.kt:406)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCall(jsAstUtils.kt:179)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsExpressionTransformer.visitCall(IrElementToJsExpressionTransformer.kt:238)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsExpressionTransformer.visitCall(IrElementToJsExpressionTransformer.kt:26)
	at org.jetbrains.kotlin.ir.expressions.IrCall.accept(IrCall.kt:24)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCallArguments(jsAstUtils.kt:427)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCallArguments$default(jsAstUtils.kt:406)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCall(jsAstUtils.kt:179)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsExpressionTransformer.visitCall(IrElementToJsExpressionTransformer.kt:238)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsExpressionTransformer.visitCall(IrElementToJsExpressionTransformer.kt:26)
	at org.jetbrains.kotlin.ir.expressions.IrCall.accept(IrCall.kt:24)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCallArguments(jsAstUtils.kt:427)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateCallArguments$default(jsAstUtils.kt:406)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsExpressionTransformer.visitConstructorCall(IrElementToJsExpressionTransformer.kt:197)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsExpressionTransformer.visitConstructorCall(IrElementToJsExpressionTransformer.kt:26)
	at org.jetbrains.kotlin.ir.expressions.IrConstructorCall.accept(IrConstructorCall.kt:27)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsStatementTransformer.maybeOptimizeIntoSwitch$lambda$10(IrElementToJsStatementTransformer.kt:114)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsStatementTransformer.visitSetValue$lambda$12(IrElementToJsStatementTransformer.kt:127)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsStatementTransformer.maybeOptimizeIntoSwitch(IrElementToJsStatementTransformer.kt:114)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsStatementTransformer.visitSetValue(IrElementToJsStatementTransformer.kt:127)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsStatementTransformer.visitSetValue(IrElementToJsStatementTransformer.kt:32)
	at org.jetbrains.kotlin.ir.expressions.IrSetValue.accept(IrSetValue.kt:21)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsStatementTransformer.visitBlock(IrElementToJsStatementTransformer.kt:49)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsStatementTransformer.visitBlock(IrElementToJsStatementTransformer.kt:32)
	at org.jetbrains.kotlin.ir.visitors.IrElementVisitor$DefaultImpls.visitReturnableBlock(IrElementVisitor.kt:128)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.BaseIrElementToJsNodeTransformer$DefaultImpls.visitReturnableBlock(BaseIrElementToJsNodeTransformer.kt:13)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsStatementTransformer.visitReturnableBlock(IrElementToJsStatementTransformer.kt:32)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsStatementTransformer.visitReturnableBlock(IrElementToJsStatementTransformer.kt:32)
	at org.jetbrains.kotlin.ir.expressions.IrReturnableBlock.accept(IrReturnableBlock.kt:23)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsStatementTransformer.visitBlock(IrElementToJsStatementTransformer.kt:49)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsStatementTransformer.visitBlock(IrElementToJsStatementTransformer.kt:32)
	at org.jetbrains.kotlin.ir.visitors.IrElementVisitor$DefaultImpls.visitReturnableBlock(IrElementVisitor.kt:128)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.BaseIrElementToJsNodeTransformer$DefaultImpls.visitReturnableBlock(BaseIrElementToJsNodeTransformer.kt:13)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsStatementTransformer.visitReturnableBlock(IrElementToJsStatementTransformer.kt:32)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsStatementTransformer.visitReturnableBlock(IrElementToJsStatementTransformer.kt:32)
	at org.jetbrains.kotlin.ir.expressions.IrReturnableBlock.accept(IrReturnableBlock.kt:23)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsStatementTransformer.visitBlockBody(IrElementToJsStatementTransformer.kt:40)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrElementToJsStatementTransformer.visitBlockBody(IrElementToJsStatementTransformer.kt:32)
	at org.jetbrains.kotlin.ir.expressions.IrBlockBody.accept(IrBlockBody.kt:20)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsAstUtilsKt.translateFunction(jsAstUtils.kt:119)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrFunctionToJsTransformer.visitSimpleFunction(IrFunctionToJsTransformer.kt:30)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrFunctionToJsTransformer.visitSimpleFunction(IrFunctionToJsTransformer.kt:16)
	at org.jetbrains.kotlin.ir.declarations.IrSimpleFunction.accept(IrSimpleFunction.kt:36)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsClassGenerator.generateMemberFunction(JsClassGenerator.kt:321)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsClassGenerator.generateClassBlock(JsClassGenerator.kt:132)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsClassGenerator.generate(JsClassGenerator.kt:67)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrDeclarationToJsTransformer.visitClass(IrDeclarationToJsTransformer.kt:32)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrDeclarationToJsTransformer.visitClass(IrDeclarationToJsTransformer.kt:15)
	at org.jetbrains.kotlin.ir.declarations.IrClass.accept(IrClass.kt:72)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrFileToJsTransformer.visitFile(IrFileToJsTransformer.kt:25)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrFileToJsTransformer.visitFile(IrFileToJsTransformer.kt:14)
	at org.jetbrains.kotlin.ir.declarations.IrFile.accept(IrFile.kt:28)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrModuleToJsTransformer.generateProgramFragment(IrModuleToJsTransformer.kt:412)
	at org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.IrModuleToJsTransformer.makeIrFragmentsGenerators$lambda$11$lambda$10(IrModuleToJsTransformer.kt:244)
	at org.jetbrains.kotlin.ir.backend.js.ic.CacheUpdater.generateIrFragments(CacheUpdater.kt:783)
	at org.jetbrains.kotlin.ir.backend.js.ic.CacheUpdater.actualizeCaches(CacheUpdater.kt:806)
	at org.jetbrains.kotlin.cli.js.K2JsIrCompiler.prepareIcCaches(K2JsIrCompiler.kt:716)
	at org.jetbrains.kotlin.cli.js.K2JsIrCompiler.doExecute(K2JsIrCompiler.kt:308)
	at org.jetbrains.kotlin.cli.js.K2JSCompiler.doExecute(K2JSCompiler.java:109)
	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:1556)
	at jdk.internal.reflect.GeneratedMethodAccessor14.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:842)

[Aleksei Tirman [JB]]

Can you please file an issue in the Kotlin project?

[ar-g]

@Aleksei Tirman [JB] so it's not a ktor issue? even though it only happens when we bump ktor version

[Aleksei Tirman [JB]]

Since it's an internal Kotlin compiler error (AssertionError), it should be investigated from the compiler's perspective first. Also, the problem might be in the Ktor's transitive dependencies.

[ar-g]

https://youtrack.jetbrains.com/issue/KT-71757/KJS-IR-AssertionError-Assertion-failed-irToJs.JsAstUtilsKt.checkOnNullabilityjsAstUtils.kt451

[Aleksei Tirman [JB]]

Can you also share a sample project there to reproduce the error?