When I'm trying to build `compose-imageviewer` fro...

# webassembly

[Adrian K]

When I'm trying to build compose-imageviewer from kotlin-wasm-examples I'm getting java.lang.IllegalStateException: e: Could not find "/home/me/kt/kotlin-wasm-examples/compose-imageviewer/shared/build/kotlinTransformedMetadataLibraries/jsWasmMain/org.jetbrains.skiko-skiko-0.0.7.80-wasm01-jsWasmMain-mF0BDQ.klib" in [/home/me/.local/share/kotlin/daemon] but if I check this path I can see that file, with the same name... any ideas?

[Oleksandr Karpovich [JB]]

What kotlin version do you use?

Please try with the latest commit in the main branch - https://github.com/Kotlin/kotlin-wasm-examples/commit/053feef9962718138ab723fbf8199e204a817052

[Adrian K]

gradle.properties shows kotlin.version=1.9.20-RC
I am using latest commit, I'm using Ubuntu if that's important

[Oleksandr Karpovich [JB]]

hm. I'm on Ubuntu too. Tried to run it again right before commenting here.

./gradlew wasmJsBrowserRun

what gradle task do you run?
Do you simply run or doing something else?

[Adrian K]

I'm running build from imageviewer project (directly from intellij). all other projects are building fine, but that shared one fails in compileJsWasmMainKotlinMetadata because of that one file

[Oleksandr Karpovich [JB]]

I see.

Adding this in shared/build.gradle.kts should help:

project.tasks.whenTaskAdded {
        if (name == "compileJsWasmMainKotlinMetadata") {
            enabled = false
        }
    }

[Adrian K]

So let me give you some background, because maybe that's not the main issue:

I tried to run wasmJsBrowserRun task and it works fine. The problem is that none browser actually works. In firefox I'm getting

wasm validation error: at offset 406: bad type

and in chrome

WebAssembly.instantiateStreaming(): invalid value type 0x71 @+405
CompileError: WebAssembly.instantiateStreaming(): invalid value type 0x71 @+405

[Adrian K]

I have enabled GC on both browsers and the webassembly page shows that GC is enabled, that's why I thought there is some build issue

[Oleksandr Karpovich [JB]]

the latest kotlin/wasm requires a dev/nightly version of Chrome (probably for firefox too)

https://www.google.com/chrome/dev

[Adrian K]

Ok, that worked for Chrome. Thanks a lot! I didn't know that nightly builds are required because GC options are there in release builds

[Oleksandr Karpovich [JB]]

1.9.20-RC uses new wasm opcodes which are currently supported only in Chrome 119 and newer (dev and beta, iirc)

[Oleksandr Karpovich [JB]]

I agree that it's not obvious

[Adrian K]

Is this mentioned anywhere in documentation? I missed that info or it's not mentioned since it's experimental feature and there is no need to document everything?
I think it would be nice to at least add it to the repository readme.md

[Oleksandr Karpovich [JB]]

you are right, we'll mention it in readme.md

[Adrian K]

Awesome! And thank you once again with that problem!