Why are modern frameworks once again trying to reinvent reactivity — and what do signals have to do with it? In this talk, we’ll take a look at signals as an attempt to give JavaScript developers fine-grained reactivity tools without extra code, proxies, or memoization. The problem they aim to solve is as old as frontend itself: how to update only what needs updating — and do it predictably. We’ll explore how this approach works, which frameworks have already adopted it, and what the current TC39 proposal means. Most importantly — do signals actually solve the problem, or are they just introducing a new layer of complexity with different syntax?

Here you'll hear a story about how a framework can make your life easier in a huge project. Story about our pains, tears and joys at Wix Editor.