import Watchpack, { type WatchOptions } from 'watchpack';
import type { Compiler, RspackPluginInstance, WatchFileSystem } from '@rspack/core';
export interface InputFileSystem {
    readFile: (...args: any[]) => void;
    readlink: (...args: any[]) => void;
    readdir: (...args: any[]) => void;
    stat: (...args: any[]) => void;
    purge?: (files?: string | string[] | Set<string>) => void;
    [key: string]: any;
}
export type WatchCallback = Parameters<WatchFileSystem['watch']>[5];
export type WatchUndelayedCallback = Parameters<WatchFileSystem['watch']>[6];
export type Watcher = ReturnType<WatchFileSystem['watch']>;
export type WatcherInfo = ReturnType<Required<Watcher>['getInfo']>;
export declare class DeferredWatchFileSystem implements WatchFileSystem {
    #private;
    readonly inputFileSystem: InputFileSystem;
    readonly watcherOptions: WatchOptions;
    watcher: Watchpack | undefined;
    constructor(inputFileSystem: InputFileSystem, onChange: () => void);
    flush(): boolean;
    watch(files: Iterable<string>, directories: Iterable<string>, missing: Iterable<string>, startTime: number, options: WatchOptions, callback: WatchCallback, callbackUndelayed: WatchUndelayedCallback): Watcher;
}
export declare class OverrideNodeWatchFSPlugin implements RspackPluginInstance {
    #private;
    readonly fileSystems: Set<DeferredWatchFileSystem>;
    constructor(onChange: () => void);
    apply(compiler: Compiler): void;
}
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