To push back a bit, JavaScript the language hasn't really changed all that much in the last few years... Yes there are lots of libraries and frameworks but as

To push back a bit, JavaScript the language hasn't really changed all that much in the last few years... Yes there are lots of libraries and frameworks but as a language, everything feels quite steady. With each ES version, perhaps there are one or two new helpful methods but nothing massive. New tools and frameworks are good, it pushes existing libraries and projects to stay current and shows continued innovation, but as lots of other people have said, you could be using the same stack from 5 years ago today and all the pieces to it would still be totally recognizable. If you're doing web apps, I'd expect React, Redux, and React Router. Maybe you're still killing it with full on client side SPAs, or maybe there's some server side rendering and data fetching. But the language is very stable and the main libraries and tools are as well. Just cause there's new stuff doesn't mean you have to use it.