import type { State } from "../state/state.js";
import type { ChildTrait } from "../traits/child.js";
import type { ParentTrait } from "../traits/parent.js";
import { Command, Target } from "../command.js";
export declare class PlaceOnGrid extends Command {
    private entity;
    private target;
    private row;
    private column;
    private lastIndex;
    private lastParent;
    constructor(entity: Target<ChildTrait>, target: Target<ParentTrait>, row: number, column: number);
    execute(state: State): Promise<void>;
    undo(state: State): Promise<void>;
}