/**
 * The following code is modified based on
 * https://github.com/webpack/webpack/blob/4b4ca3b/lib/node/NodeWatchFileSystem.js
 *
 * MIT Licensed
 * Author Tobias Koppers @sokra
 * Copyright (c) JS Foundation and other contributors
 * https://github.com/webpack/webpack/blob/main/LICENSE
 */
import type Watchpack from '../../compiled/watchpack/index.js';
import type { FileSystemInfoEntry, InputFileSystem, Watcher, WatchFileSystem } from '../util/fs.js';
type WatchpackInstance = InstanceType<typeof Watchpack>;
export default class NodeWatchFileSystem implements WatchFileSystem {
    #private;
    inputFileSystem: InputFileSystem;
    watcherOptions: Watchpack.WatchOptions;
    watcher?: WatchpackInstance;
    constructor(inputFileSystem: InputFileSystem);
    watch(files: Iterable<string>, directories: Iterable<string>, missing: Iterable<string>, startTime: number, options: Watchpack.WatchOptions, callback: (error: Error | null, fileTimeInfoEntries: Map<string, FileSystemInfoEntry | 'ignore'>, contextTimeInfoEntries: Map<string, FileSystemInfoEntry | 'ignore'>, changedFiles: Set<string>, removedFiles: Set<string>) => void, callbackUndelayed: (fileName: string, changeTime: number) => void): Watcher;
    on(event: 'change', listener: (filename: string, mtime: number) => void): this;
    on(event: 'remove', listener: (filename: string) => void): this;
    on(event: 'aggregated', listener: (changes: Set<string>, removals: Set<string>) => void): this;
    once(event: 'change', listener: (filename: string, mtime: number) => void): this;
    once(event: 'remove', listener: (filename: string) => void): this;
    once(event: 'aggregated', listener: (changes: Set<string>, removals: Set<string>) => void): this;
    emit(event: 'change', filename: string, mtime: number): boolean;
    emit(event: 'remove', filename: string): boolean;
    emit(event: 'aggregated', changes: Set<string>, removals: Set<string>): boolean;
}
export {};