import type { ResolvedAnnotation } from "../../iiif/annotationResolver";
type ExternalAnnotationLoader = {
    load: (canvasJson: unknown, canvasKey: string, canvasId?: string) => Promise<ResolvedAnnotation[]>;
    getForKey: (canvasKey: string) => ResolvedAnnotation[] | undefined;
    clear: () => void;
};
/**
 * Collect external annotation page URLs from a canvas
 * These are URLs that need to be fetched to get the annotation content
 *
 * @param canvas - Either a manifesto canvas object or raw JSON
 * @returns Array of annotation page URLs that need to be fetched
 */
export declare const collectAnnotationPageRefs: (canvas: unknown) => string[];
export declare const createExternalAnnotationLoader: (fetcher?: typeof fetch) => ExternalAnnotationLoader;
export {};