Properties attached to each area analytics display feature.
Type Declaration
id: string
Stable feature identifier: tile-<tile index>-<longitude>-<latitude> for a heatmap point,
hex-<region index>-<cell index> or square-<region index>-<cell index> for a cell.
Remarks
They include all optional metric fields from the API response, a stable id that
MapLibre's promoteId uses for event state tracking, and eventState (from
SupportsEvents), which drives hover/click styling.
Properties attached to each area analytics display feature.