import type { Annotation } from "../types";
export declare function getStorageKey(pathname: string): string;
export declare function loadAnnotations<T = Annotation>(pathname: string): T[];
export declare function saveAnnotations<T = Annotation>(pathname: string, annotations: T[]): void;
export declare function clearAnnotations(pathname: string): void;
/**
 * Load all annotations from localStorage across all pages.
 * Returns a map of pathname -> annotations.
 */
export declare function loadAllAnnotations<T = Annotation>(): Map<string, T[]>;
/**
 * Save annotations with a sync marker indicating they've been synced to a session.
 * Adds `_syncedTo: sessionId` to each annotation before saving.
 */
export declare function saveAnnotationsWithSyncMarker(pathname: string, annotations: Annotation[], sessionId: string): void;
/**
 * Get annotations that haven't been synced to the given session.
 * Returns annotations without a `_syncedTo` marker, or with a different session ID.
 * If no sessionId provided, returns annotations without any sync marker.
 */
export declare function getUnsyncedAnnotations(pathname: string, sessionId?: string): Annotation[];
/**
 * Remove `_syncedTo` markers from all annotations for a pathname.
 * Useful when resetting sync state or changing sync destination.
 */
export declare function clearSyncMarkers(pathname: string): void;
export declare function getSessionStorageKey(pathname: string): string;
export declare function loadSessionId(pathname: string): string | null;
export declare function saveSessionId(pathname: string, sessionId: string): void;
export declare function clearSessionId(pathname: string): void;
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