Function closeController

apps/sim/app/api/copilot/chat/stream/route.ts:286–294

()

    }

    const closeController = () => {
      if (controllerClosed) return
      controllerClosed = true
      try {
        controller.close()
      } catch {
        // Controller already closed by runtime/client
      }
    }

    const enqueueEvent = (payload: unknown) => {
      if (controllerClosed) return false