import * as types from './types';
import * as Router from 'router';
export declare const isInternal: (fn: Function) => boolean;
export declare const getRoute: (req: Router.RoutedRequest) => string;
export declare const renameHttpSpan: (span?: types.InstrumentationSpan | undefined, method?: string | undefined, route?: string | undefined) => void;
export declare const once: (fn: Function) => () => void;