IndexedDB – mara.dev

Canvas charts in twelve lines. Responsive, accessible and dark-mode ready, with no D3 learning curve.

Offline-first sync for IndexedDB with conflict resolution you can actually reason about.

Canvas heatmaps for dense matrices, with colour scales that survive an accessibility review.

Atomic state with derived values and no provider component anywhere in sight.

Audio waveform rendering and region selection, decoded off the main thread.

A marker and clustering layer for maps, rendered on canvas so ten thousand pins stay smooth.