import Konva from 'konva';
import type { CoordinateTransform, LiveEffect, ViewportBounds } from 'mudlet-map-renderer';
import type { SceneHandle } from '../scene';
/** Ghost preview for an armed `placeRooms` pending: the clipboard's rooms are
 *  drawn as dashed rectangles following the cursor at their relative offsets,
 *  snapped exactly like the eventual paste. */
export declare class PlacePreviewEffect implements LiveEffect {
    private readonly settings;
    private readonly sceneRef;
    private rects;
    private layer?;
    private unsubscribe?;
    private strokeWidth;
    private dash;
    constructor(settings: {
        roomSize: number;
    }, sceneRef: {
        current: SceneHandle | null;
    });
    attach(layer: Konva.Layer): void;
    updateViewport(_bounds: ViewportBounds, scale: number, _transform: CoordinateTransform): void;
    syncPositions(): void;
    destroy(): void;
    private sync;
}