import { Tree } from '@angular-devkit/schematics';
/**
 *    Finds the closest file in the given path.
 * @param tree
 * @param {string} currentFolder The current folder to search in.
 * @param {string} fileName The file name to search for.
 * @returns {string} The path to the closest file.
 */
export declare function findClosestFile(tree: Tree, currentFolder: string, fileName: string): string | null;