`ClassCastException` is thrown when building an `ApolloClient` using a builder in KotlinJS

[AngeloFilaseta]

Version

4.0.0-beta.5

Summary

When calling the build() method on a Builder offered by ApolloClient on KotlinJS i get a ClassCastException. It is not really easy for me to debug the error, since the it refer to pieces of code that were generated.

The problem does not appear on the JVM platform. If i use the 3.8.3 version everything work perfectly as I would expect.

Steps to reproduce the behavior

I use this configuration in order create my javascript binaries in my build.gradle.kts

  js(IR) {
      browser {
          binaries.executable()
      }
  }

and use the .js output offered by the task jsBrowserDevelopmentWebpack. The problem appears when using the production task too.

The code that causes problem in my case is the following. In this case we fall inside the catch block:

try {
  ApolloClient.Builder()
    .serverUrl("http://0.0.0.0:1313/graphql")
    .build()
} catch (e: ClassCastException) {
  console.error(e.cause)
  console.error(e.message)
  console.log(e.printStackTrace())
}

Both the cause and the message are undefined,
As far as I understood it is not the serverUrl parameter that causes the error.

Logs

throwableExtensions.kt:25 ClassCastException
    at THROW_CCE (webpack-internal:///./kotlin/kotlin-kotlin-stdlib.js:5844:11)
    at WindowDispatcher.get_0 [as get_y2st91_k$] (webpack-internal:///./kotlin/kotlin-kotlin-stdlib.js:551:51)
    at protoOf.get_y2st91_k$ (webpack-internal:///./kotlin/kotlin-kotlin-stdlib.js:19369:46)
    at CoroutineContext$plus$lambda (webpack-internal:///./kotlin/kotlin-kotlin-stdlib.js:19208:33)
    at CoroutineName.fold [as fold_j2vaxd_k$] (webpack-internal:///./kotlin/kotlin-kotlin-stdlib.js:530:12)
    at CombinedContext.plus [as plus_s13ygv_k$] (webpack-internal:///./kotlin/kotlin-kotlin-stdlib.js:515:21)
    at eval (webpack-internal:///./kotlin/ktor-ktor-client-core.js:1835:83)
    at protoOf.get_value_j01efc_k$ (webpack-internal:///./kotlin/kotlin-kotlin-stdlib.js:24692:56)
    at protoOf.get_coroutineContext_115oqo_k$ (webpack-internal:///./kotlin/ktor-ktor-client-core.js:1852:19)
    at HttpClient (webpack-internal:///./kotlin/ktor-ktor-client-core.js:626:42)

[BoD]

Hi! Thanks a lot for reporting this!

We managed to reproduce the CCE when using Kotlin 1.9 and we're not entirely sure what exactly causes it, but that's resolved when using Kotlin 2.x (which is in RC1 since a few days ago, and that Apollo Kotlin 4 is compiling with).

[martinbonnin]

@AngeloFilaseta are you OK if we close this one? JS targets are moving fast and we'd rather avoid supporting older versions unless really necessary.

[AngeloFilaseta]

Of course, I am.
Thank you for your support!

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