jQuery has been a pretty safe bet for years. There's no reason why one of these Javascript frameworks won't also become a safe bet as well.
20 765 downloads in the last day 127 921 downloads in the last week 489 285 downloads in the last month
Since it's essentially Sinatra for Node.js, I don't think it's too big of a stretch to say that it will be a part of the stack for some time.
I would say longer than Angular, as browser-side packages seem to have more churn on the basis of adoption of newer browser features.