import { TreeLike } from './tree';
export type VisitTreeItem = {
    path: string;
    isFile: boolean;
};
/**
 * Visit all files in a tree.
 *
 * usage example:
 *
 * for (const {path, isFile} of VisitTree(tree, projectRoot)) {
 *   if (isFile && path.endsWith('.component.ts')) {
 *      return true;
 *   }
 * }
 *
 * @param tree nx Tree instance
 * @param dir directory to start the visits default to the root of the tree
 * @param ignoreFolders folders to ignore
 */
export declare function VisitTree(tree: TreeLike, dir?: string, ignoreFolders?: (string | RegExp)[]): Generator<VisitTreeItem, void, void>;