/**
 * Takes an URL and returns an ID.
 * @param {string | URL} url
 * @param {boolean} useAllerId Use AllerID query param to override other Ids. true by default for backward compatibility.
 * @returns {string}
 */
declare function getExternalId(url: string | URL, useAllerId?: boolean): string;

/**
 * Takes an URL and returns the stripped host
 * @param {string | URL} url
 * @returns {string}
 */
declare function getStrippedHost(url: string | URL): string;

export { getExternalId, getStrippedHost };