import type { NamespaceRecord } from "@olenbetong/appframe-updater";
export declare function readNamespacesCache(hostname: string): NamespaceRecord[] | undefined;
export declare function writeNamespacesCache(hostname: string, namespaces: NamespaceRecord[]): void;
export declare function upsertNamespaceCacheRecord(hostname: string, record: NamespaceRecord): void;