Function setup

packages/platform-node/src/internal/worker.ts:12–47

({ scope, worker })

const platformWorkerImpl = Worker.makePlatform<WorkerThreads.Worker | ChildProcess.ChildProcess>()({
  setup({ scope, worker }) {
    return Effect.flatMap(Deferred.make<void, WorkerError>(), (exitDeferred) => {
      const thing = "postMessage" in worker ?
        {
          postMessage(msg: any, t?: any) {
            worker.postMessage(msg, t)
          },
          kill: () => worker.terminate(),
          worker
        } :
        {
          postMessage(msg: any, _?: any) {
            worker.send(msg)
          },
          kill: () => worker.kill("SIGKILL"),
          worker
        }
      worker.on("exit", () => {
        Deferred.unsafeDone(exitDeferred, Exit.void)
      })
      return Effect.as(
        Scope.addFinalizer(
          scope,
          Effect.suspend(() => {
            thing.postMessage([1])
            return Deferred.await(exitDeferred)
          }).pipe(
            Effect.interruptible,
            Effect.timeout(5000),
            Effect.catchAllCause(() => Effect.sync(() => thing.kill()))
          )
        ),
        thing
      )
    })
  },
  listen({ deferred, emit, port }) {
    port.worker.on("message", (message) => {
      emit(message)