/**
 * @description - creation operator, detect specific path is directory or file, pass through when yes, transparent when no
 * @author - huang.jian <hjj491229492@hotmail.com>
 */
import { Observable } from 'rxjs';
import { Identity } from '../utils/constant';
import type { FileSystem } from '../interface/fs';
import type { NormalRequest } from '../interface/resolver';
export declare function is<T>(fs: FileSystem, absPath: string, identity: Identity, payload: T): Observable<T>;
export declare function isFile<T>(fs: FileSystem, absPath: string, payload: T): Observable<T>;
export declare function isDirectory<T>(fs: FileSystem, absPath: string, payload: T): Observable<T>;
export declare function isFileRequest(request: NormalRequest, fs: FileSystem): Observable<NormalRequest>;
export declare function isDirectoryRequest(request: NormalRequest, fs: FileSystem): Observable<NormalRequest>;