It looks like uv_async_init() prevents Node's event loop from exiting cleanly, even with the worker thread not launched yet. Defer constructing the Hub singleton until the first time it's interacted with to prevent that call from being performed immediately on module require.
It looks like
uv_async_init()prevents Node's event loop from exiting cleanly, even with the worker thread not launched yet. Defer constructing theHubsingleton until the first time it's interacted with to prevent that call from being performed immediately on module require.Another take on #185.