import type { PdfAnnotation } from "./pdf-annotation-types.js";
export declare function buildAnnotationStorageKey(storageKey: string, documentId: string): string;
export declare function loadAnnotationsFromLocalStorage(key: string): PdfAnnotation[] | null;
export declare function saveAnnotationsToLocalStorage(key: string, documentId: string, annotations: PdfAnnotation[]): void;
export declare function exportAnnotationsJson(annotations: PdfAnnotation[], documentId: string): string;
export declare function parseAnnotationsJson(text: string): PdfAnnotation[];
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