Can't keep up with what? There's a few Javascript frameworks, and React is the lion's share of job postings. There's a few build tools but most everyone uses Webpack. The unit testing tools work on frontend and backend, and mostly seem to center around Mocha or Jest.

There was a short lived explosion of frontend frameworks that grognards drag up like it's a relevant problem, but serving up HTML from a server side route has always been an option.