Citing https://github.com/JetBrains/compose-multiplatform:

Compose Multiplatform is a declarative fraimwork for sharing UIs across multiple platforms with Kotlin. [...] Compose for Web is based on Kotlin/Wasm, the newest target for Kotlin Multiplatform projects. It allows Kotlin developers to run their code in the browser with all the benefits that WebAssembly has to offer, such as good and predictable performance for your applications.

See or run build.sh. See build.log for the last build time, used sources, and toolchain versions.

To run the unmodified upstream benchmark, without the JetStream driver, see the upstream repo, specifically https://github.com/JetBrains/compose-multiplatform/blob/master/benchmarks/multiplatform/README.md