it takes one or two months max to pick up a new framework if you understand the underlying principles and challenges of building a UI framework and exposing an API to it so that others can use it, because all frameworks a fundamentally choosing a set of tradeoffs - and that set is tiny.

you want to legit get into this? 
  
 build a gui framework from scratch using drawing primitives - point, line, circle

Founder

I recently joined a company that utilizes AngularJS and has a lot of custom tooling. The project is well-structured, and I am learning new things. However,

I recently joined a company that utilizes AngularJS and has a lot of custom tooling. The project is well-structured, and I am learning new things. However, I've started to develop a fear that I might be missing out on a shiny new framework and will have a lot to catch up on later. Do all big tech companies constantly move to new, stable technologies? How do you keep up with the JavaScript world?

Frontend: Seeking your opinions and insights