import { DB_Object, TypedMap } from '@nu-art/ts-common';
export type LastUpdated = {
    lastUpdated: number;
    oldestDeleted?: number;
};
export type SyncDataFirebaseState = TypedMap<LastUpdated>;
export type Response_DBSync<DBType extends DB_Object> = {
    toUpdate: DBType[];
    toDelete: DB_Object[];
};
export type SyncDbData = {
    dbKey: string;
    lastUpdated: number;
};
export declare const SmartSync_UpToDateSync: "up-to-date";
export declare const SmartSync_DeltaSync: "delta-sync";
export declare const SmartSync_FullSync: "full";
export type NoNeedToSyncModule = SyncDbData & {
    sync: typeof SmartSync_UpToDateSync;
};
export type DeltaSyncModule = SyncDbData & {
    sync: typeof SmartSync_DeltaSync;
    items: Response_DBSync<any>;
};
export type FullSyncModule = SyncDbData & {
    sync: typeof SmartSync_FullSync;
};