/**
 * Same-origin iframe identity inheritance.
 *
 * Extracted from `client.ts` so unit tests don't have to load the rrweb
 * recorder (rrweb has a CJS/ESM dual-shape that breaks happy-dom test envs).
 */
export interface ParentInheritance {
    tabId?: string;
    sessionId?: string;
    parentProjectId?: string;
}
/**
 * Reach across to a same-origin parent window to inherit the harnessa-fe
 * identity triple (tabId, sessionId, parentProjectId). Cross-origin parents
 * throw on property access; we catch and return {} so the child runtime
 * silently falls back to generating its own ids.
 *
 * Resolution order for each field:
 *   tabId            ← parent.__harnessa_fe_client__.tabId
 *                    ← parent.sessionStorage.getItem('__hfe_tab_id__')
 *   sessionId        ← parent.__hfe_session_id__
 *                    ← parent.__harnessa_fe_client__.sessionId
 *   parentProjectId  ← parent.__HARNESSA_FE__.projectId
 */
export declare function tryInheritFromParent(): ParentInheritance;