import { ITrafficSource } from "../types";
declare const sanitizeClickId: (value: string) => string;
declare const sanitizeRef: (value: string) => string;
declare const sanitizeUtm: (value: string) => string;
/**
 * Sanitize every traffic-source field of a (possibly sparse) traffic-source
 * object. `referrer` is left untouched: it is a browser-set URL already
 * handled by redactUrl, not an attacker-controlled query parameter. Unknown
 * keys fall through to the UTM rule, the most permissive one.
 */
declare const sanitizeTrafficSources: <T extends Partial<ITrafficSource>>(trafficSources: T) => T;
export { sanitizeClickId, sanitizeRef, sanitizeUtm, sanitizeTrafficSources };
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