GeaLightweight Reactive UI Framework

Write ordinary JavaScript. Get reactivity for free. No virtual DOM, no hooks, no signals — just your code, made reactive at compile time.

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Zero Concepts

No signals, hooks, dependency arrays, or compiler directives. Stores are classes. Components are classes or functions. Computed values are getters.

Compile-Time Reactivity

The Vite plugin analyzes JSX at build time and generates surgical DOM patches — no virtual DOM, no diffing, no runtime overhead.

~13 kb Batteries Included

State management and routing are built in — ~13 kb gzipped with the router, ~10 kb without. Zero runtime dependencies, zero decision fatigue.

Proxy-Based Stores

State lives in ordinary classes wrapped by a deep Proxy. Mutate properties directly — array methods, nested objects, everything just works.

JS-Native Props

Objects and arrays passed as props are the parent's reactive proxy — child mutations update the parent automatically. Primitives are copies. No emit, no v-model — just JavaScript semantics.

Built-In Router

Client-side RouterView, Link, route params, wildcards, and programmatic navigation. No extra packages needed.

Accessible UI Primitives

@geajs/ui builds on Zag.js to provide headless, accessible components — dialogs, menus, tooltips, accordions, and more — ready to style and compose.

Full Toolkit

Mobile UI primitives, VS Code extension, project scaffolder, and HMR support. Everything you need, nothing you don't.