LegoDOMBuild components. Use them as HTML.

Reactive web components with no imports, no virtual DOM, and no required build step. About 14 KB gzipped.

🧱

No imports

Define a .lego file. Use the tag anywhere it should appear. The runtime registers it as a real Custom Element.

✨

Mutate the data, the DOM follows. ES6 Proxies do the work. No setState, no hooks, no API to learn.

⚡

Direct DOM updates with fine-grained dependency tracking. Only the bindings that read changed data re-run.

🎯

Tell each link which region to swap. Sidebars, scroll position, and in-progress forms all survive navigation.

💾

A reactive property that survives refresh and syncs across tabs. No state library, no glue code.

🌐

Real Web Components. They work inside React, Vue, Svelte, plain HTML, or as your whole app.