Function createHoverHandler

Create a hover handler that manages feature-state hover state.

Wires up mousemove / mouseleave events on the specified layer and toggles a boolean state key (default "hover") on the underlying source. Pair with a paint expression like:

import { expr } from "@honua/sdk";
const opacity = expr.case([expr.featureState("hover"), 1.0], 0.5);
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const hover = createHoverHandler(map, {
  source: "parcels",
  layer: "parcel-fill",
});
// Later:
hover.remove();
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