Dagr

Dagr is a directed-graph toolkit for the web: a typed, headless Sugiyama layout engine, a WebGPU renderer built on the three.js WebGPURenderer, and the building blocks for visual DSLs (node graphs you can edit, not just look at).

It is a successor to the dagre and d3 pairing that most node-graph UIs still reach for. The difference is that layout here is designed for animation from the start: nodes keep a stable identity across relayouts, mutations arrive as patches, and the layout engine emits deltas rather than a fresh set of coordinates. A renderer can spring every node from where it was to where it now belongs, so a graph that changes reads as a graph that moved.

Packages

Package	What it does
@dagr/graph	Typed directed graph model: stable identity, zero dependencies
@dagr/layout	Headless Sugiyama layout pipeline, incremental and animation first
@dagr/render	WebGPU renderer: SDF shapes, instancing, spring animation
@dagr/react	The DagrCanvas component and hooks

Status

Early. The packages are scaffolded and the roadmap is public, but there is no released API yet. Expect rapid change until v0.1.