/**
 * Pure item model for vz-hub. Turns raw parsed <vz-hub-item> attributes into a
 * normalized, playable HubItem list (stable ids, defaults, drops items with no
 * source) so the parsing is unit-tested rather than done inline in the element.
 */
export interface RawHubItem {
    src?: string | null;
    poster?: string | null;
    title?: string | null;
    format?: string | null;
    contentId?: string | null;
}
export interface HubItem {
    /** Stable id: the content-id if present, else a positional `item-<n>`. */
    id: string;
    /** Playable media URL. */
    src: string;
    /** Thumbnail shown on the lobby panel (null = fall back to a placeholder). */
    poster: string | null;
    title: string;
    /** VzFormat string; defaults to MONO_360. */
    format: string;
}
/** Heuristic: does a source URL point at a still image (→ vz-img) vs video (→ vz-video)? */
export declare function isImageSource(src: string): boolean;
export declare function normalizeHubItems(raw: RawHubItem[]): HubItem[];
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