export type ThumbnailRecord = {
    harmonyJobId: string;
    blob: Blob;
    createdAt: number;
};
/**
 * Service for storing and retrieving plot/map thumbnails in the Terra IndexedDB.
 * Records are keyed by Harmony job ID.
 */
export declare class ThumbnailService {
    store(harmonyJobId: string, blob: Blob): Promise<void>;
    get(harmonyJobId: string): Promise<Blob | undefined>;
    delete(harmonyJobId: string): Promise<void>;
}