import type { AdvertisementObservation } from '../backend-contract/advertisement.js';
import { type SerializableRecord } from '../backend-contract/primitives.js';
/** Creates the exact owned advertisement projection that crosses Electron IPC. */
export declare function snapshotAdvertisementObservation(value: AdvertisementObservation<string>): SerializableRecord;
/** Rejects partial, malformed, or field-dropping advertisement values before IPC publication. */
export declare function assertAdvertisementObservation(value: unknown): asserts value is AdvertisementObservation<string>;
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