I had come across and tried to use that version of compose but getting following for some reason....could be some other issue in my setup

An exception occurred applying plugin request [id: 'org.jetbrains.compose', version: '1.5.1-dev-wasm01']
> Failed to apply plugin 'org.jetbrains.compose'.
   > Shared build service 'org.jetbrains.compose.internal.service.ConfigurationProblemReporterService' parameters have unexpected type: org.gradle.api.services.BuildServiceParameters

is

1.4.0-dev-wasm09

the right version of compose compiler to use?

also getting

> Could not resolve all dependencies for configuration ':compose-web:wasmJsNpmAggregated'.
   > Could not find org.jetbrains.kotlin:kotlin-stdlib:1.9.30-dev-460.

I just update versions there

ok, working now, thanks!

started with the most minimal kmp sample I had (https://github.com/joreilly/chip-8) ....will update other samples I have that use Wasm soon

(dependency stuff i there probably needs to be cleaned up a bit as well)

performance is a bit slow but I imagine that will improve.over time

I'll update PeopleInSpace and BikeShare KMP samples next

re. performance, could be some bottlenecks as well in chip-8 emulator....I need to look more closely at that too......though speed is reasonable in for example Compose for Desktop client

also just came across following think it's Rust based 😉 https://code.benco.io/chip8/web/

@bashor do you think performance right now is somewhat expected given stage tech is at or is it worth seeing if as mentioned there are perhaps some bottlenecks in the implementation?

@bashor is

2.3.3-wasm0

still latest version of Ktor that supports wasm (from https://maven.pkg.jetbrains.space/kotlin/p/wasm/experimental/io/ktor/ktor/)?

if I try to use that (this is a different project to above....it's BikeShare) I get

Could not find org.jetbrains.kotlin:kotlin-stdlib-wasm:1.9.20-Beta2.

this is due I guess to

if (requested.module.name.startsWith("kotlin-stdlib")) {
                val kotlinVersion = project.property("kotlin.version") as String
                useVersion(kotlinVersion)
            }

> though speed is reasonable in for example Compose for Desktop client I think it’s more likely related to timers directly or indirectly. There is restriction in the browsers, like described here https://developer.mozilla.org/en-US/docs/Web/API/setTimeout#reasons_for_delays_longer_than_specified

do you think performance right now is somewhat expected given stage tech is at

or is it worth seeing if as mentioned there are perhaps some bottlenecks in the implementation?

The performance mostly should be good — at least, comparable or better than JS. Definitely, there is room for improvement, there could be issues in specific libraries. Feel free to report perf issues as well.

re. above on using ktor etc.....should there be a

org.jetbrains.kotlin:kotlin-stdlib-wasm:1.9.20-Beta2

version right now?

I can try and setup a

resolutionStrategy

to handle those

right, there should be

kotlin-stdilib-wasm-js

and

kotlin-stdilib-wasm-wasi

since 1.9.20-Beta

no

kotlin-stdilib-wasm

ok, I think following worked (though probably cleaner way of doing it)

resolutionStrategy {
    dependencySubstitution {
        substitute(module("org.jetbrains.kotlin:kotlin-stdlib-wasm:1.9.0"))
            .using(module("org.jetbrains.kotlin:kotlin-stdlib-wasm-js:1.9.20-Beta2"))
    }

    eachDependency {
        if (requested.module.name.startsWith("kotlin-stdlib")) {
            useVersion("1.9.20-Beta2")
        }
    }
}

got a bit further but ended up with

e: There are still 2 unbound symbols at the end of IR linkage process:
Unbound public symbol IrSimpleFunctionPublicSymbolImpl: org.w3c.dom/WebSocket.addEventListener|-5832680268725389244[0]
Unbound public symbol IrSimpleFunctionPublicSymbolImpl: org.w3c.dom/WebSocket.removeEventListener|3589491163511314858[0]

@John O'Reilly thanks for trying, we’ll let you know as soon as we publish a new version of ktor

You can look at how it is set up here https://github.com/Kotlin/kotlin-wasm-examples/tree/main/compose-jetsnack

Looking good so far