You don't need React: creating a minimal UI library in Vanilla JavaScript

📝 Discussion Summary (Click to expand)

React is over‑used; lighter alternatives are preferred

"I think React is way overused but every time you see a blog post ... I groan because you know the reaction is going to be “what about X feature”, and of course the mini framework doesn't do it." – afavour
Misunderstanding of “immediate mode” terminology

"You keep using that word. I do not think it means what you think it means." – wild_egg
Value of experimental minimal UI libraries as learning tools

"I found this pretty nice and educational, there are full stack developers who cannot write anything outside React and do not even understand why React was created in the first place." – netdur

🚀 Project Ideas

A tiny (~2 KB) library that lets you write UI as pure UI = f(state) functions without a virtual‑DOM diff.
Eliminates React‑style boilerplate while keeping performance predictable.

Key	Value
Target Audience	Front‑end developers tired of React/Vue bloat and wanting deterministic rendering
Core Feature	Immediate‑mode rendering compiled to minimal DOM updates
Tech Stack	TypeScript + Vite + SWC compiler
Difficulty	Medium
Monetization	Revenue-ready: SaaS component marketplace ($9/mo)

HN commenters repeatedly called immediate mode “the only way to avoid wasted renders” – this library makes that practical.
Provides a playground to replace React components one‑for‑one, reducing bundle size dramatically.

Command‑line tool that analyses a React codebase and auto‑generates equivalent static HTML/CSS + tiny vanilla‑JS that runs under 10 KB.
Handles CRUD‑style pages, forms, and simple state, letting teams drop React without rewriting.

Key	Value
Target Audience	Engineering teams maintaining legacy React apps that need to cut bundle size for static sites
Core Feature	Static‑site generator with automatic form validation and client‑side hydration
Tech Stack	Node.js + ESLint + @babel/parser
Difficulty	Low
Monetization	Hobby

Inspired by discussions like “95 % of apps are CRUD and don’t need React” – this tool makes that transition painless.
Generates ready‑to‑deploy Astro‑compatible pages, appealing to Astro users looking for a drop‑in replacement.

Web‑based visual editor where you describe UI components as UI = f(state) widgets and instantly see compiled, performant code output.
Bridges the gap between “immediate mode” concepts and mainstream frameworks, producing clean React‑free code.

Key	Value
Target Audience	Designers and developers who want rapid prototyping without manual DOM diffing
Core Feature	Live preview → automatic codegen → export to lightweight component library
Tech Stack	React (for editor) + Rust (codegen) + WebAssembly
Difficulty	High
Monetization	Revenue-ready: Tiered SaaS ($15/mo starter, $49/mo pro)

Directly addresses “how would you do layouting without a tree structure?” by letting users sketch layout trees visually.
HN users praised immediate‑mode ideas but noted lack of tooling – this fills that void.