BrowserSync hanging on Vue.js template errors

I have a Laravel 5.5 project with the out of the box tooling. In fact most of the vanilla configuration is the same; I have just added routes / models / service providers - things independant of BrowserSync.

npm run watch --watch-poll

Updating composer, npm update .. eventually localhost:3000 just spins constantly, I cannot even hard refresh.. I must command + c the application; there is no log output that I can tell..

I am running Node 11.0.0.. and am at a loss.