export declare type INodeFs = {
    is: IFsFlags;
    readdir(path: string): Promise<string[]>;
    exists(path: string): Promise<boolean>;
    ensureDir(path: string, options?: IFsEnsureOptions | number): Promise<void>;
    writeFile(path: string, data: any, options?: IFsWriteFileOptions | string): Promise<void>;
    readFile(path: string, options?: IFsReadFileOptions): Promise<Uint8Array>;
    copyFile(source: string, target: string, flags?: number): Promise<void>;
    remove(path: string): Promise<void>;
    join(...segments: string[]): string;
    resolve(...segments: string[]): string;
    dirname(path: string): string;
    basename(path: string): string;
    extname(path: string): string;
};
export declare type IFsEnsureOptions = {
    mode?: number;
};
export declare type IFsWriteFileOptions = {
    encoding?: string;
    flag?: string;
    mode?: number;
};
export declare type IFsReadFileOptions = {
    flag?: string;
} | {
    encoding: string;
    flag?: string;
};
export declare type IFsFlags = {
    dir(path: string): Promise<boolean>;
    file(path: string): Promise<boolean>;
};