import { type RouteLine } from "../types";
/**
 * Filters route lines for a given floor: removes virtual segments
 * and keeps only lines on the specified floor.
 *
 * @param routeLines - All route lines (may span multiple floors)
 * @param currentFloor - Floor to filter by, or `null` to return all non-virtual lines
 *   (single-floor plans / "show all" mode)
 */
export declare function getVisibleRouteLines(routeLines: readonly RouteLine[], currentFloor: string | null): RouteLine[];
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