import type { HubspotFieldResponse, HubspotFormDefinition } from '../types';
/** sessionStorage key for first-touch marketing params (cross-page form attribution). */
export declare const MARKETING_PARAMS_STORAGE_KEY = "se_studio_marketing_params";
/**
 * Standard marketing query keys to capture even when no matching form field exists yet.
 * OM1 contact/demo/webinar forms use the five `utm_*` contact properties.
 */
export declare const KNOWN_MARKETING_PARAM_KEYS: readonly ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content', 'gclid', 'fbclid', 'msclkid'];
/**
 * Read current URL marketing params and merge first-touch into sessionStorage
 * (existing session keys are not overwritten).
 *
 * Safe to call on every page load so multi-page journeys retain UTMs when the
 * form page has no query string.
 */
export declare function captureMarketingParams(): Record<string, string>;
/**
 * Marketing params for form fill: first-touch session, then current URL
 * (URL wins for keys present on this page — last-touch on the form URL).
 */
export declare function getMarketingParams(): Record<string, string>;
/**
 * Fill empty hidden form fields from marketing params (URL + session).
 * Does not overwrite existing non-empty values (definition defaults or prior fills).
 * Preserves each field's `objectTypeId` from the form definition.
 */
export declare function applyMarketingParamsToHiddenFields(formDefinition: HubspotFormDefinition, defaults: Record<string, HubspotFieldResponse>, marketingParams?: Record<string, string>): Record<string, HubspotFieldResponse>;
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