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kotlinlang

If I have a wasmJs app where I want to write a JS service worker, but _in Kotlin_, does anyone know how I'd set that up? From what I can tell, there's no implicit dependency from wasmJs to the js source set, and I'm not sure how I could tell the wasmJs target to compile a specific .kt file into JS.

I guess I could make the wasmJs build task also build the js target and have a build step copy the output into the wasm distribution?

I'm still very new to webdev, so I have NOT fully validated this, but the solution from <https://avwie.github.io/multithreaded-web-applications-in-kotlin-with-web-workers> seems to work.

Basically, split `commonMain` into `nonJsCommonMain` for the actual app, then create a `js("worker")` target, and attach `wasmJsProcessResources` `dependsOn` `workerBrowserDistribution` along with `wasmJsMain.dependencies.resources.srcDirs(layout.buildDirectory.dir("dist/worker/productionExecutable")` . Then in an init/app .js file, you can register the service worker pointing to the JS file `navigator.serviceWorker.register("worker.js")`.

For actually handling the service events, creating a `fun main()` inside the `Worker.kt` file seems to work and gets executed when the worker is created.