import { TreeNode } from 'primeng/api';
export declare namespace TreeHelpers {
    function synchronizeTrees(destinationTrees: TreeNode[], sourceTrees: TreeNode[]): void;
    function findTreeNodeByKey<T>(nodes: TreeNode<T>[] | undefined, key: string): TreeNode<T> | null;
    function findTreeNodeDataByKey<T>(nodes: TreeNode<T>[] | undefined, key: string): T | null;
    function findTreeNodesByKeys<T>(nodes: TreeNode<T>[] | undefined, keys: string[]): TreeNode<T>[];
    function findTreeNodesDataByKeys<T>(nodes: TreeNode<T>[] | undefined, keys: string[]): T[];
}
