import { ITransactionItem } from '../ITransactionItem.js';
import { IDesignItem } from '../../../item/IDesignItem.js';
import { IContentChanged } from '../../InstanceServiceContainer.js';
export declare class InsertChildAction implements ITransactionItem {
    constructor(designItem: IDesignItem, newParent: IDesignItem, newIndex: number);
    title?: string;
    get affectedItems(): IDesignItem[];
    undo(): IContentChanged[] | null;
    do(): IContentChanged[] | null;
    designItem: IDesignItem;
    newParent: IDesignItem;
    newIndex: number;
    oldParent: IDesignItem;
    oldIndex: number;
    newItem: IDesignItem;
    mergeWith(other: ITransactionItem): boolean;
}