import { MixinApiService } from '../..';
interface GroupMemberVersion {
    version: number;
    versionID: string;
}
declare class GroupSyncer {
    private instance;
    private syncedGroupsVersion;
    private syncedGroupsVersionID;
    private syncedGroupMemberVersion;
    constructor(instance: MixinApiService);
    reset(): void;
    syncGroupVersion: (operationID: string) => Promise<void>;
    syncGroupInfoAndMemberVersion: (operationID: string) => Promise<void>;
    private compareGroupVersionAndTrigger;
    private compareGroupMemberVersionAndTrigger;
    private getJoinedGroupIDs;
    addGroupMemberVersion: (grouoID: string, memberVersion: GroupMemberVersion) => void;
    updateGroupMemberVersion: (groupID: string, memberVersion: GroupMemberVersion) => void;
    checkIsJoinGroup: (groupID: string) => boolean;
}
export default GroupSyncer;