import type { ArkmeSourceDirectory, ArkmeSourceItem, ArkmeEnvironment } from '../types.js';
export interface ArkmeNavigationCache {
    version: 1;
    userId: number;
    directory: ArkmeSourceDirectory;
    selectedSourceRef?: string;
    sources: Partial<Record<ArkmeSourceDirectory, ArkmeSourceItem[]>>;
    updatedAtMillis: number;
    selfTopics?: {
        environment: ArkmeEnvironment;
        complete: boolean;
        refreshedAtMillis: number;
    };
}
export declare function readNavigationCache(userId: number, storage?: Storage): ArkmeNavigationCache | undefined;
export declare function readLastNavigationCache(storage?: Storage): ArkmeNavigationCache | undefined;
export declare function writeNavigationCache(cache: ArkmeNavigationCache, storage?: Storage): void;
export declare function clearLastNavigationCache(storage?: Storage): void;
/** Signed source/image references are valid only inside the Provider instance that issued them. */
export declare function reconcileNavigationProviderInstance(instanceId: string, storage?: Storage): boolean;
/** Remove the success marker after current-instance projections failed to load so reconnect can retry. */
export declare function forgetNavigationProviderInstance(storage?: Storage): void;
export declare function cachedSelectedSource(cache: ArkmeNavigationCache): ArkmeSourceItem | undefined;
/** Rebind a cached selection to a source reference issued by the current Provider instance. */
export declare function reconcileSelectedSource(selected: ArkmeSourceItem | undefined, loaded: ArkmeSourceItem[]): ArkmeSourceItem | undefined;
//# sourceMappingURL=navigation-cache.d.ts.map