import { Express } from 'express';
import { RouteMetaData, RouteMetaDataMulti, ParseOptions, ExpressRegex, Key } from '../types';
/**
 * Internal entry point for Express 4 parsing. Called by the dispatcher
 * in `src/express-parser/index.ts`.
 */
export declare const parseV4: (app: Express, options: ParseOptions) => RouteMetaData[] | RouteMetaDataMulti[];
export declare const onlyForTesting: {
    pathRegexParser: (layerRegexPath: ExpressRegex | string, keys: Key[]) => string;
    mapKeysToPath: (layerRegexPath: ExpressRegex, keys: Key[]) => string;
};