July 30, 2026 4 min read mvpsvelte-flow
Designing a drill-down graph without a backend
Why mock JSON, dagre, and Svelte Flow are enough to validate the product interaction model first.
A graph product does not need real ingestion on day one to validate whether users understand the view model.
Mock nodes, explicit chokepoint flags, and a deterministic dagre layout are enough to test search, selection, and narrative density.
Once the interaction contract is right, the data layer can become more sophisticated without rewriting the surface.