import type { MudletMap } from '../mapIO';
import { type RoomClipboard } from './store';
import type { SceneHandle } from './scene';
/** Snapshot rooms + centroid origin without touching store state. The result is
 *  plain-object only, so it survives structured clone (cross-tab transfer). */
export declare function buildRoomClipboard(map: MudletMap, ids: number[]): RoomClipboard | null;
export declare function copyRoomsToClipboard(map: MudletMap, ids: number[]): number;
export type PasteResult = {
    count: number;
    newIds: number[];
    externalExitsStubbed: number;
    externalSpecialExitsDropped: number;
    /** Rooms whose hash the destination map already had, so the copy went in without one. */
    hashesDropped: number;
};
export declare function buildPasteStatus(verbKey: string, result: {
    count: number;
    externalExitsStubbed: number;
    externalSpecialExitsDropped: number;
    hashesDropped: number;
}): string;
export declare function pasteClipboard(clipboard: RoomClipboard, target: {
    x: number;
    y: number;
    z: number;
    areaId: number;
}, scene: SceneHandle | null): PasteResult | null;
/** Copy → paste-at-offset in one step, without touching the user's clipboard.
 *  Z-neutral: each duplicate keeps its source room's z, so cross-level selections
 *  preserve their vertical relations. */
export declare function duplicateRooms(map: MudletMap, ids: number[], offset: {
    dx: number;
    dy: number;
}, target: {
    areaId: number;
}, scene: SceneHandle | null): PasteResult | null;