import fs from 'fs/promises';
import path from 'path';
export declare class PackageRootService {
    #private;
    constructor(fsModule?: Pick<typeof fs, 'stat' | 'readdir'>, pathModule?: Pick<typeof path, 'dirname' | 'join' | 'relative'>);
    find(startPath: string, rootFile?: string): Promise<string | undefined>;
    findSubPackages(rootDir: string, rootFile?: string): Promise<string[]>;
}