```e: java.lang.IllegalStateException: Unsupported...

# javascript

[Nick]

e: java.lang.IllegalStateException: Unsupported operation
	at org.jetbrains.kotlin.backend.common.serialization.IrModuleDeserializer.referenceSimpleFunctionByLocalSignature(IrModuleDeserializer.kt:37)
	at org.jetbrains.kotlin.backend.common.serialization.KotlinIrLinker.tryReferencingSimpleFunctionByLocalSignature(KotlinIrLinker.kt:604)
	at org.jetbrains.kotlin.backend.common.overrides.FakeOverrideBuilder.declareFunctionFakeOverride(FakeOverrides.kt:144)
	at org.jetbrains.kotlin.backend.common.overrides.FakeOverrideBuilder.linkFunctionFakeOverride(FakeOverrides.kt:106)
	at org.jetbrains.kotlin.ir.overrides.FakeOverrideBuilderStrategy.linkFakeOverride(IrOverridingUtil.kt:56)
	at org.jetbrains.kotlin.ir.overrides.IrOverridingUtil.createAndBindFakeOverride(IrOverridingUtil.kt:402)
	at org.jetbrains.kotlin.ir.overrides.IrOverridingUtil.createAndBindFakeOverrides(IrOverridingUtil.kt:257)
	at org.jetbrains.kotlin.ir.overrides.IrOverridingUtil.generateOverridesInFunctionGroup(IrOverridingUtil.kt:206)
	at org.jetbrains.kotlin.ir.overrides.IrOverridingUtil.buildFakeOverridesForClass(IrOverridingUtil.kt:134)
	at org.jetbrains.kotlin.backend.common.overrides.FakeOverrideBuilder.buildFakeOverrideChainsForClass(FakeOverrides.kt:101)
	at org.jetbrains.kotlin.backend.common.overrides.FakeOverrideBuilder.provideFakeOverrides(FakeOverrides.kt:163)
	at org.jetbrains.kotlin.backend.common.overrides.FakeOverrideBuilder.provideFakeOverrides(FakeOverrides.kt:172)
	at org.jetbrains.kotlin.backend.common.serialization.KotlinIrLinker.postProcess(KotlinIrLinker.kt:632)
	at org.jetbrains.kotlin.psi2ir.Psi2IrTranslator.generateModuleFragment(Psi2IrTranslator.kt:88)
	at org.jetbrains.kotlin.ir.backend.js.KlibKt.generateModuleFragmentWithPlugins(klib.kt:344)
	at org.jetbrains.kotlin.ir.backend.js.KlibKt.generateKLib(klib.kt:170)
	at org.jetbrains.kotlin.cli.js.K2JsIrCompiler.doExecute(K2JsIrCompiler.kt:194)
	at org.jetbrains.kotlin.cli.js.K2JSCompiler.doExecute(K2JSCompiler.java:181)
	at org.jetbrains.kotlin.cli.js.K2JSCompiler.doExecute(K2JSCompiler.java:74)
	at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:88)
	at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:44)
	at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:98)
	at org.jetbrains.kotlin.incremental.IncrementalJsCompilerRunner.runCompiler(IncrementalJsCompilerRunner.kt:178)
	at org.jetbrains.kotlin.incremental.IncrementalJsCompilerRunner.runCompiler(IncrementalJsCompilerRunner.kt:75)
	at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compileIncrementally(IncrementalCompilerRunner.kt:286)
	at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compileImpl(IncrementalCompilerRunner.kt:111)
	at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compile(IncrementalCompilerRunner.kt:74)
	at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compile$default(IncrementalCompilerRunner.kt:65)
	at org.jetbrains.kotlin.daemon.CompileServiceImplBase.execJsIncrementalCompiler(CompileServiceImpl.kt:550)
	at org.jetbrains.kotlin.daemon.CompileServiceImplBase.access$execJsIncrementalCompiler(CompileServiceImpl.kt:96)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl.compile(CompileServiceImpl.kt:1747)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357)
	at sun.rmi.transport.Transport$1.run(Transport.java:200)
	at sun.rmi.transport.Transport$1.run(Transport.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:834)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

[Tomasz Krakowiak]

Check if you use up-to-date compiler and serialization plugin. If you do, Youtrack is better place to report compiler errors.