import { TreeData } from "../types";
/**
 * Utility function to find a node in a subtree
 * @param root The root node to begin with.
 * @param predicate Function called on the node or its children, recursively.
 *        Must return true when the child node is found.
 * @returns The found child node (may be the root), or undefined
 */
export declare function findTreeNode(root: TreeData, predicate: (node: TreeData) => boolean): TreeData | undefined;