/**
 * @description - detect file request, find first match
 * @author - huang.jian <hjj491229492@hotmail.com>
 */
import type { OperatorFunction } from 'rxjs';
import type { FileSystem } from '../interface/fs';
import type { NormalRequest, NormalTerminal } from '../interface/resolver';
export declare function probe(fs: FileSystem): OperatorFunction<NormalRequest, NormalTerminal>;