interface NormalizeOptions {
    defaultProtocol?: string;
    normalizeProtocol?: boolean;
    forceHttp?: boolean;
    forceHttps?: boolean;
    stripAuthentication?: boolean;
    stripHash?: boolean;
    stripTextFragment?: boolean;
    stripWWW?: boolean;
    removeQueryParameters?: (string | RegExp)[] | boolean;
    keepQueryParameters?: (string | RegExp)[];
    removeTrailingSlash?: boolean;
    removeSingleSlash?: boolean;
    removeDirectoryIndex?: boolean | string[] | RegExp;
    removeExplicitPort?: boolean;
    sortQueryParameters?: boolean;
    stripProtocol?: boolean;
}
export default function normalizeUrl(urlString: string, options?: NormalizeOptions): string;
export {};