Probably the most surprising thing for you: Go is getting generics. No exact timeline, but it's happening for Go 2.0. Rust is seeing production use in many places and its being accepted more as the sane alternative to C for modern development of high performance software. Ecosystem still not big or mature enough to make big waves, however, but that depends on how you interpret "big waves". SPAs are used and abused, t…
I haven’t done much web development in several years myself.
Typescript is mentioned a lot on HN. Saw ReasonML mentioned recently. Vue.js has a movie on the way.
As far as Web frameworks go, what’s popular seems to change every couple years.