/**
 * Client for the public content-delivery API (api-key gated).
 *
 * The player fetches a content item's config + authored overlays by content-id
 * (reusing the same api-key path analytics uses) so an embed that only carries
 * `content-id` + `api-key` can render authored annotations/captions without any
 * DOM children. All fetchers are non-throwing: a failure returns null so the
 * player degrades gracefully to whatever DOM the embed provided.
 */
import type { DeliveryContentConfig, DeliveryTourConfig, DeliveryAnnotation, AnnotationData } from '@vizor-vr/shared';
export interface ContentFetchOptions {
    apiEndpoint: string;
    contentId: string;
    apiKey?: string;
}
export interface TourFetchOptions {
    apiEndpoint: string;
    tourId: string;
    apiKey?: string;
}
/** Fetch a content item's delivery config (player config + annotations + captions). */
export declare function fetchDeliveryContent(opts: ContentFetchOptions, fetchImpl?: typeof fetch): Promise<DeliveryContentConfig | null>;
/** Fetch a tour's delivery graph (probes + portals). */
export declare function fetchDeliveryTour(opts: TourFetchOptions, fetchImpl?: typeof fetch): Promise<DeliveryTourConfig | null>;
/** Map the delivery wire shape to the player's AnnotationData (null → undefined). */
export declare function deliveryAnnotationsToData(annotations: DeliveryAnnotation[]): AnnotationData[];
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