desertthunder.dev / voltx
a reactive (signals based) hypermedia web framework (wip) stormlightlabs.github.io/volt/
hypermedia frontend signals
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TypeScript 94.1%
CSS 3.8%
HTML 1.2%
JavaScript 0.8%
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README.md

VoltX.js#

codecov License JSR NPM Version

⚠️ Pre-release Software: VoltX.js is in active development. Breaking changes are expected until v1.0. Use in production at your own risk.

Philosophy/Goals#

  • Behavior is declared via data-volt-* attributes.
    • HTML drives the UI, not components.
  • Core under 20 KB gzipped, zero dependencies.
  • Signals update the DOM directly without a virtual DOM.
    • Native Server-Sent Events (SSE) and WebSocket patch updates.
    • No reactivity scheduler, no VDOM diffing.
  • Extend behavior declaratively (persist, scroll, animate, etc.).
  • Progressive enhancement, i.e. works with static HTML out of the box.

Values#

  • Never exceed 15 KB for the core runtime.
  • No custom build systems — work with any backend.
  • All source in TypeScript, no magical DSLs.
  • Every feature ships with a test harness.

Concepts#

Concept Description
Signals Reactive primitives that automatically update DOM bindings when changed.
Bindings data-volt-text, data-volt-html, data-volt-class connect attributes or text to expressions.
Actions data-volt-on-click, data-volt-on-input, etc. attach event handlers declaratively.
Streams data-volt-stream="/events" listens for SSE or WebSocket updates and applies JSON patches.
Plugins Modular extensions (data-volt-persist, data-volt-animate, etc.) that enhance the core.

Project Structure#

volt/
├── dev/
├── docs/
├── examples/
├── lib
│   ├── index.html
│   ├── public
│   ├── src
│   │   ├── core
│   │   │   ├── asyncEffect.ts
│   │   │   ├── binder.ts
│   │   │   ├── charge.ts
│   │   │   ├── dom.ts
│   │   │   ├── evaluator.ts
│   │   │   ├── http.ts
│   │   │   ├── lifecycle.ts
│   │   │   ├── plugin.ts
│   │   │   ├── reactive.ts
│   │   │   ├── shared.ts
│   │   │   ├── signal.ts
│   │   │   ├── ssr.ts
│   │   │   └── tracker.ts
│   │   ├── debug
│   │   │   ├── graph.ts
│   │   │   ├── logger.ts
│   │   │   └── registry.ts
│   │   ├── debug.ts
│   │   ├── demo/
│   │   ├── index.ts
│   │   ├── main.ts
│   │   ├── plugins
│   │   │   ├── persist.ts
│   │   │   ├── scroll.ts
│   │   │   └── url.ts
│   │   ├── styles
│   │   │   ├── index.css
│   │   │   ├── variables.css
│   │   │   ├── typography.css
│   │   │   ├── forms.css
│   │   │   ├── components.css
│   │   │   ├── collections.css
│   │   │   ├── media.css
│   │   │   └── base.css
│   │   └── types
│   │       ├── helpers.ts
│   │       └── volt.d.ts
│   └──  test/
└── README.md

License#

MIT License © 2025 Stormlight Labs