Janus: Easy Complex UI with Declarative FRP

on YouTube ↗45m

" summary

Janus claims a declarative FRP-style UI with concrete primitives like Varying, List, Map and a composable View/Template system written as ~3,500 lines of CoffeeScript. Demos show a task list, credit‑card form, draggable boxes and a flyout renderer that actually work, plus server-client seamless rendering (same code for SSR and client hydration) and a websocket commercial app. Tradeoffs include extra memory/CPU and eager data transforms, but the debugger and live‑reload prototypes are functional.

AI-written summary · about

" chapters (8)

1. 0:00Start
2. 2:25View Code
3. 2:50Checklist View
4. 14:57Tabbed Text Editor
5. 18:33Client Seamless Rendering
6. 25:52Extend Janus
7. 27:39Sticky Utility
8. 42:08Odk

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