Node has come a long way, and now has a responsible release cadence, including annual LTS releases, each with 30 months of security &#x2F; critical patch support. The ecosystem is still crazy (especially with the ES6 features showing up in the Node 4.2 LTS), but Node itself seems to have matured nicely.<p>Persona may have been a bit premature in choosing Node, but we expected to share much of our code between the backend, frontend, and Firefox itself. Node offered a great opportunity to attempt that. Plus, the whole thing started as a side project between two engineers, so why not try out something crazy and new?