For web frontend, Svelte. I did a year and a half of React/fullstack dev and really didn't like it. (disclaimer: was a fullstack dev for many years but focused

For web frontend, Svelte. I did a year and a half of React/fullstack dev and really didn't like it. (disclaimer: was a fullstack dev for many years but focused on backend more, and only worked with jquery frontend before 2017). My next (current) job is backend dev so I haven't gotten a chance to do frontend professionally again; I briefly dabbled in Vue and liked it; and then I discovered Svelte and like it even more. I started working on personal projects in Svelte and hope to learn a lot more. Honestly I'm just hoping for Vue or Svelte to take off as they seem just much more sensible than React, but React is a giant now and doesn't seem to go away any time soon.