video1.0<iframe src="https://www.loom.com/embed/3d15316994de49338ff275c63cf09b65" frameborder="0" width="1920" height="1440" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>14401920Loomhttps://www.loom.com14401920https://cdn.loom.com/sessions/thumbnails/3d15316994de49338ff275c63cf09b65-0b13b06723abea5d.gif300.13866599999994This Loom introduces WayLiter, a TypeScript SDK for evaluating and ranking routes your app already generates. It compares options like a 1.2 mile walk at 11 p.m., where Route A is shortest but Route B is safer and better lit, with 95 percent lighting, about 11 open businesses, and zero disruptions, even if it adds 4 minutes. The demo explains soft preferences and hard constraints, including a maximum extra time threshold (for example, rejecting a route that exceeds a five minute limit). It also shows how WayLiter handles missing or stale data and excludes routes affected by road closures from recommendations.