The World Beyond Components
summary
Argues that fine‑grained reactivity — not rerunning components — is the real runtime model, and shows an actual runtime: signals and createEffect implemented as a getter/setter plus subscriber set and a global stack (≈50 lines), plus primitives like createMemo, createStore, createResource. Demonstrates compiled JSX that becomes compiled JSX to real DOM and live examples (counter and to‑do) where only affected text nodes update, the demos work, and this approach can remove hydration at scale.
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chapters (9)
- 0:00Future of web frameworks
- 2:40Component-centric limits
- 7:15Fine-grained reactivity in UI
- 11:06Signals and effects from scratch
- 14:39Live reactive counter
- 18:10JSX to reactive DOM
- 23:43Flattening component trees
- 27:15Reactive vs traditional frameworks
- 29:59Eliminating hydration costs
