Function onMessage

packages/platform-bun/src/internal/workerRunner.ts:39–52

(event: MessageEvent)

      }

      function onMessage(event: MessageEvent) {
        const message = (event as MessageEvent).data as Runner.BackingRunner.Message<any>
        if (message[0] === 0) {
          const result = handler(0, message[1])
          if (Effect.isEffect(result)) {
            const fiber = runFork(result)
            fiber.addObserver(onExit)
            FiberSet.unsafeAdd(fiberSet, fiber)
          }
        } else {
          port.close()
          Deferred.unsafeDone(closeLatch, Exit.void)
        }
      }
      function onMessageError(error: MessageEvent) {
        Deferred.unsafeDone(
          closeLatch,