import type { IFileSystem } from "../../types";
import { FileHasher } from "./file-hasher";
export type ModuleChangeListener = (moduleId: string) => void;
export type FileChangeListener = (filePath: string) => void;
export declare class FileWatcher {
    private fs;
    private hasher;
    private filesHash;
    private listeners;
    private excludedDirs;
    private watchers;
    private watchedDirs;
    private watchedFiles;
    constructor(fs: IFileSystem, hasher?: FileHasher);
    onModuleChanged(listener: ModuleChangeListener): void;
    scanModule(moduleId: string, rootDir: string, watchDirs?: string[]): Promise<void>;
    watchFile(filePath: string, listener: FileChangeListener): Promise<void>;
    startWatching(): void;
    stopWatching(): void;
    handleFileChange(filePath: string): Promise<void>;
    private handleWatchedFileChange;
    private exploreDir;
    private notifyModuleChange;
    private isExcludedPath;
}