Sorry for spamming this channel, but could you ple...

# webassembly

[Alexander Girke]

Sorry for spamming this channel, but could you please provide more information on whether Long & ULong are already compiled correctly? I tried to add a parameter with such type to an exported function, but this leads to the following:
• JS-related warning is emitted: Exported declaration uses non-exportable parameter type: ULong -> seems to be ignorable
• .wat file no longer exists
• WASM Instance can be instantiated in nodeJs & function called for Long -> for ULong, WASM Instance can not be instantiated due to Compiling function #656:"fibonacci__JsExportAdapter" failed: type error in branch[0] (expected structref, got i64) @+55427 (function signature looks like fun fibonacci(n: ULong, a: ULong, b: ULong): ULong)
Also, if I try to add a default value for the parameters a & b in the ULong case, I get another error: Duplicate export name 'fibonacci' for function 656 and function 657 @+14021 ... Any ideas?

[sdeleuze]

Try maybe with Long instead of ULong for imports/exports.

[Alexander Girke]

• WASM Instance can be instantiated in nodeJs & function called for Long

Thank you, that's what worked - though the .wat file is still missing.
However, the question remains what is going wrong in the ULong case...

[sdeleuze]

Yeah, you will probably need to wait Kotlin/Wasm team feedback on that one

[bashor]

There is a compiler option to turn on wat genration -Xwasm-generate-wat
Add into your build.gradle.kts something like:

tasks.withType<org.jetbrains.kotlin.gradle.tasks.Kotlin2JsCompile>().configureEach {
    kotlinOptions.freeCompilerArgs += listOf(
        "-Xwasm-generate-wat", 
    )
}