Every component here is already live on this site inside the case study it came from. Follow the demo link, use the thing, then decide. TypeScript source, styled entirely from CSS custom properties, restyle it by redefining tokens, not by fighting a theme.
interaction
Swipe Deck
$4,999.99
A gesture-driven card stack with the hard parts done: drag physics, optimistic writes, and an undo that can reverse a decision already in flight.
Pointer-event drag with rotation and velocity threshold
Optimistic state machine: pending → committed → reverted
Transport, seekable scrubber and a spectrum analyzer. Playback position is owned by a single source of truth; a seek is a write to it, never to the view.
requestAnimationFrame transport loop, cancelled cleanly
Seekable scrubber with elapsed and remaining
Spectrum view that accepts a real analyser feed or a synthesized envelope
An operator queue for work with legal deadlines. Sorts by time remaining and shows it, so nobody has to compute urgency from a timestamp under pressure.
Derived sort, so the deadline is the only ordering authority
Live countdown with breach, critical, warn and ok bands
Per-row actions writing to an append-only decision log
Five spec-driven diagram types rendered to themed SVG. You describe the system as data; the renderer owns every coordinate, so a layout fix improves all of them at once.
pipeline, topology, sequence, checklist and matrix
Server-rendered SVG, no client JavaScript at all
Themed entirely from CSS custom properties, light and dark
Scrolls internally on narrow screens; never breaks page layout